• 专利附录
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    • 专利摘要:
    The invention relates to a system (1) for compressing a useful fluid. To this end, the system (1) comprises means (11) for compressing a motive fluid at a first determined pressure, the compression means (11) being arranged at least partially in a portion of a roadway (30) . The compression means (11) are actuated by a passage of at least one object (10) over the portion of the roadway (30). The system (1) further comprises a pressure intensifier assembly (12) comprising at least one pneumatically operated pressure intensifier. The pressure multiplication assembly (12) is configured to compress the useful fluid to a second pressure determined from the motive fluid supplying the pressure multiplication assembly (12).
    公开号:BE1028492B1
    申请号:E20215560
    申请日:2021-07-19
    公开日:2022-02-15
    发明作者:Marc Vanbaleghem
    申请人:Marc Vanbaleghem；
    IPC主号:
    专利说明:

    Title: Compression system of a fluid
    DESCRIPTION Technical Field The invention relates to a fluid compression system, and more particularly to a fluid compression system comprising a pneumatic pressure intensifier.
    Technological background Our contemporary lifestyles lead to ever-increasing energy needs. However, to deal with global warming, saving energy is becoming one of the major challenges of our societies, in particular to reduce the consumption of fossil fuels.
    Several areas are currently being considered to reduce our energy consumption. For example, projects for local electricity production units are emerging, particularly based on photovoltaics and wind power. Local energy production makes it possible to meet, at least partially, the energy needs of a house, a district or a city, by taking advantage of the energy available locally (the sun and/or the wind) and reducing losses due to energy transmission.
    If it is known to exploit the sun and the wind, other available energy sources are not or little used today. Summary of the invention An object of the present invention is to improve the recovery of energy produced in excess by one or more moving objects.
    Another object of the present invention is to provide a local energy production system.
    According to a first aspect, the invention relates to a system for compressing a useful fluid, the compression system comprising:
    - means for compressing a motive fluid at a first determined pressure, the compression means being arranged at least partially in a portion of a roadway, the compression means being actuated by a passage of at least one object on the portion of the roadway;
    - a pressure multiplication assembly comprising at least one pneumatically controlled pressure multiplier, the assembly being configured to compress the useful fluid to a second pressure determined from the motive fluid supplying the assembly.
    According to a variant, the working fluid corresponds to air, the means for compressing the working fluid comprising: - At least one device for compressing the working fluid, each compression device comprising a chamber configured to receive a determined volume of the working fluid , a first end of the compression device being connected to the atmosphere via a first non-return device configured to supply the chamber with air from the atmosphere, a second end of the compression device being connected to the multiplication assembly via a second non-return device configured to supply the multiplication assembly when a pressure in the chamber is greater than or equal to the first determined pressure; - at least one plate arranged above the at least one compression device and configured to exert a compression force on the at least one compression device when the at least one object passes over the at least one plate; and - return means configured to return the compression means to an initial position after the passage of at least one object over the portion of the roadway.
    According to an additional variant, each compression device corresponds to a closed envelope formed from an elastically deformable material, the closed envelope forming the chamber, the at least one plate being configured to pass from the initial position to a compression position when the at least one object passes over the at least one plate and to return to the initial position under the effect of the return means when the at least one object is no longer positioned on the at least one plate.
    According to yet another variant, each compression device corresponds to a pump comprising a sliding piston varying a volume of the chamber, the pump being actuated by the compression force exerted by the at least one plate, the at least one plate being configured to move from the initial position to a compression position when the at least one object passes over the at least one plate and to return to said initial position under the effect of the return means when the at least one object is no longer positioned on the at least one plate. According to an additional variant, the at least one compression device is fixed to the at least one plate. According to yet another variant, the multiplication assembly comprises a plurality of pneumatically controlled pressure multipliers arranged in series, each pressure multiplier of the plurality being configured to increase the pressure from an input pressure value to a value of outlet pressure, a first pressure multiplier in the series being fed by the motive fluid at the first determined pressure, each pressure multiplier following a previous pressure multiplier in the series being fed by a fluid at the outlet pressure of the multiplier previous pressure in the series. According to another variant, the compression system further comprises at least one first storage device and at least one second storage device, the at least one first storage device being configured to store the motive fluid at the first determined pressure, Ie at least one first storage device being arranged between the compression means and the multiplication assembly, the at least one second storage device being configured to store the useful fluid at the second determined pressure.
    According to yet another variant, the compression system further comprises a device for distributing the useful fluid arranged at the outlet of the at least one second storage device. According to an additional variant, the compression system further comprises at least one electricity generator configured to generate electricity from the useful fluid. According to another variant, the compression system further comprises at least one electricity storage device connected to the at least one electricity generator and configured to store the electricity generated by the at least one electricity generator.
    According to an additional variant, the useful fluid belongs to a set of fluids comprising: - air; - hydrogen; - methane.
    According to yet another variant, the first determined pressure is between 4 and 10 bars and the second determined pressure is between 80 and 800 bars. According to a second aspect, the invention relates to a useful fluid distribution system comprising the compression system as described above according to the first aspect of the invention.
    Brief description of the figures Other characteristics and advantages of the invention will emerge from the description of the non-limiting embodiments of the invention below, with reference to the appended figures 1 to 5, in which: [Fig. 1] schematically illustrates a system for compressing a useful fluid, according to a particular embodiment of the present invention; [Fig. 2] schematically illustrates a useful fluid compression system, according to another particular embodiment of the present invention;
    [Fig. 3] schematically illustrates means for compressing a motive fluid of the compression system of FIG. 1 and/or 2, according to a first particular embodiment of the present invention; [Fig. 4] schematically illustrates means for compressing a motive fluid of the compression system of FIG. 1 and/or 2, according to a second particular embodiment of the present invention; [Fig. 5] schematically illustrates a pressure multiplication assembly of the compression system of FIG. 1 and/or 2, according to a first particular embodiment of the present invention.
    Description of the embodiments A useful fluid compression system will now be described in the following with reference to FIGS. 1 to 5. The same elements are identified with the same reference signs throughout the description which go follow. An object of the invention is to recover part of the kinetic energy of one or more moving objects to increase the pressure of a useful fluid. A useful fluid corresponds to a fluid, for example a gas, which can be used once compressed to a determined pressure to power a device, for example a motor, an electricity generator. The useful fluid, once compressed, can for example be stored in one or more tanks, forming an available energy storage, for example to power the engine or the electricity generator. [Fig. 1] schematically illustrates a compression system 1 of a useful fluid, according to a particular and non-limiting embodiment of the present invention.
    The compression system 1 advantageously comprises means 11 for compressing a motive fluid and a pressure multiplication assembly 12 supplied with the motive fluid compressed by the compression means 11.
    The compression means 11 are advantageously arranged, partially or completely, in a portion of a roadway on which one or more moving objects 10 travel.
    An object 10 corresponds for example to a vehicle (for example a motor vehicle, a truck, a bus, a bicycle, a motorcycle, a moped) or to a person or an animal.
    The roadway corresponds for example to a road, a path, an access to a house, a building or a garage for example.
    The roadway corresponds to any path intended to be taken by a vehicle or a person.
    According to a particular and non-limiting embodiment of the invention, the compression means 11 are arranged in a portion of the roadway on which the moving objects 10 decrease their speed, which makes it possible to recover part of the kinetic energy of these or these objects which is lost, for example transformed and dissipated in the form of heat by the actuation of the brakes of this or these objects.
    By way of non-limiting examples, such a portion corresponds for example to a speed bump (also called a speed bump), a garage entrance, an arrival zone on a toll or an intersection (for example an intersection with traffic lights or with stop sign or give way). The mass of the object or objects 10 passing over the location of the roadway in which the compression means 11 are buried generates a pressure force on these compression means 11 making it possible to compress the motive fluid contained in the compression means 11. the effect of the weight of the object 10 passing over the compression means 11, the motive fluid is compressed to a first determined pressure value (for example a value between 4 and 10 bars) before leaving these means compression 11 to supply a pressure multiplication assembly 12 connected to the compression means 11 via one or more conduits 111 (eg a pipe) for example.
    The motor fluid compressed by the compression means 11 corresponds for example to air.
    The compression means 11 are for example supplied with air from the atmosphere at atmospheric pressure (approximately 1 bar). When an object 10 passes over these compression means 11, the air contained in the compression means is compressed to the first determined pressure value and then evacuated from the compression means 11 to supply the pressure 12. A first non-return device (for example a non-return valve, a non-return valve) is advantageously provided at the inlet of the compression means 11 to allow entry of atmospheric air into the compression means 11 via an air intake duct during the atmospheric air supply phase of the compression means 11 and to prevent the air, once pressurized by the passage of the object 10, from coming out via the intake duct.
    A second non-return device (for example a non-return valve, a non-return valve) is advantageously provided at the outlet of the compression means 11 to allow atmospheric air to be evacuated from the compression means 11 at the first value of pressure determined via the exhaust duct(s) 111 and to prevent the air evacuated at the first pressure determined to the multiplication assembly 12 from returning to the compression means 11 during the atmospheric air supply phase of the means compression 11.
    The compression means 11 are described below in more detail according to two particular embodiments with reference to Figures 3 and 4.
    The compression system 1 also advantageously comprises a pressure multiplication assembly 12 fed by the motive fluid pressurized to the first pressure value determined by the compression means 11. The pressure multiplication assembly comprises one or more pressure multipliers. pneumatically controlled pressure. A pressure multiplier is also called a pressure amplifier or booster (“booster” or “pressure booster” in English). The pressure multiplier is a device for increasing the pressure of a useful fluid (for example air, hydrogen, methane) according to a ratio of 1 to X, X being for example equal to 2, 4, 8, 20, 60 or more, depending on the size and type of the pressure multiplier, the multiplication assembly being supplied by the motive fluid at a pressure value equal to or less than the first determined pressure value, for example equal to 4, 6, 8 or 10 bars.
    An example of a pressure multiplication assembly 12 is described in more detail according to a particular embodiment with reference to FIG. 5. The useful fluid is then taken out of the multiplication assembly 12 at the second pressure value determined via one or more evacuation ducts 121 to be for example stored or directly used.
    Such a compression system 1 thus makes it possible to recover part of the kinetic energy produced by a moving object, typically unused and lost kinetic energy (for example during the slowing down or deceleration phase) to compress a useful fluid . The useful fluid, once compressed to the second determined pressure value, represents an energy reserve that can be used immediately or subsequently. Such a system makes it possible to generate energy in a non-polluting way because it recovers part of the energy produced but not exploited to compress a fluid, for example air to power a turbine to generate electricity or to fill a tank of a compressed air engine, or hydrogen in a hydrogen refueling station to then fill a tank to supply a fuel cell. The compression system 1 is configured for the implementation of a compression method of a useful fluid. Such a method advantageously comprises the following steps, starting from an initial state in which the compression means comprise a determined volume of motive fluid in a chamber provided for this purpose, at an initial pressure value called PO: - in a first stage (also called phase of compression of the working fluid), a mobile object 10, for example a motor vehicle circulating on the roadway, passes over the compression means 11. The mass of the mobile object 10 exerts a force on the means of compression 11, allowing under the effect of this force to compress the working fluid to a first pressure value, called P1; - in a second step (also called phase of exit or discharge of the working fluid), the working fluid is pushed back from the compression means 11 to the first compression value P1 in the direction of the pressure multiplication assembly 12, this backflow at the pressure P1 being ensured by the second non-return device arranged at the outlet of the compression means and configured to allow the outlet of the working fluid from the compression means only when the working fluid has reached the first pressure value P1; the first non-return device prevents the motive fluid from evacuating via the intake duct;
    - in a third step (also called phase of admission of the working fluid), the compression means 11 admits a determined volume of working fluid, for example air from the external environment (the atmosphere), at the pressure PO; the working fluid is admitted via the inlet pipe and the first non-return device;
    - in a fourth step, for example implemented in parallel with the third step, the useful fluid is compressed in the pressure multiplication assembly 12 until it reaches a second pressure value P2, the pressure multiplication assembly 12 being fed by the motive fluid at the pressure P1. [Fig. 2] schematically illustrates a compression system 2 of a useful fluid, according to another particular and non-limiting embodiment of the present invention.
    The compression system 2 comprises the elements forming the compression system 1 illustrated with reference to FIG. 1, namely the compression means 11 and the pressure multiplication assembly 12, as well as one or more other elements.
    Several embodiments of the compression system 2 are described below.
    The compression system 2 is implemented in the form of each embodiment below independently of the other embodiments described below, but also in the form of any combination of all or part of the embodiments described below. below.
    According to a first embodiment, the compression system 2 further comprises one or more first storage devices 21 arranged at the output of the compression means 11, between the compression means 11 and the pressure multiplication assembly 12. Each first storage device 21 is configured to store a determined volume of motive fluid at the first determined pressure value, for example 4, 6, 8 or 10 bars.
    Each first storage device 21 corresponds, for example, to a gas bottle or cylinder, for example metallic or made of composite material, or any other container designed to contain a pressurized fluid, for example air.
    Each first storage device 21 makes it possible to store a determined volume of motive fluid (corresponding to the volume of the container forming the first storage device) in order, for example, to continuously supply the pressure multiplication assembly 12. According to a variant embodiment, a pressure reducer is for example arranged between the set of first storage device(s) 21 (or between each first storage device 21) and the pressure multiplication set 12 to reduce the pressure of the motive fluid (c that is to say the first pressure value determined) to bring the working fluid to a supply pressure of the pressure multiplication assembly 12.
    According to a second embodiment, the compression system 2 further comprises one or more second storage devices 22 arranged at the output of the pressure multiplication assembly 12, the second storage device 22 being for example connected to the assembly pressure multiplication unit 12 via the evacuation conduit 121. Each second storage device 22 is configured to store a determined volume of useful fluid at the second determined pressure value obtained via the pressure multiplication assembly, for example 15, 20, 30, 60, 100, 200, 300, 500 bars or more, for example 800 bars. The second pressure value depends for example on the compressibility of the useful fluid. Each second storage device 22 corresponds for example to a cylinder or a gas cylinder, for example metallic or made of composite material, or any other container provided to contain a pressurized fluid, for example air or hydrogen.
    Each second storage device 22 makes it possible to store a determined volume of useful fluid (corresponding to the volume of the container forming the second storage device) in order, for example, to continuously supply an electricity generation device 201 and/or a distribution device useful fluid 202.
    According to a third embodiment, the compression system 2 further comprises one or more third storage devices 23 arranged at the input of the pressure multiplication assembly 12, each third storage device 23 being for example connected to the assembly pressure multiplication 12 via a useful fluid inlet duct.
    Each third storage device 23 is configured to store a determined volume of useful fluid at a third pressure value… determined (for example 2, 4, 6, 8, 10 bars or more). The useful fluid is thus introduced into a compression chamber of the pressure multiplication assembly 12 with a pressure equal to the third determined pressure in order to be compressed there until the second determined pressure value is reached.
    Each third storage device 23 corresponds, for example, to a gas bottle or cylinder, for example metallic or made of composite material, or any other container designed to contain a pressurized fluid, for example air or hydrogen.
    According to a fourth embodiment, the compression system 2 further comprises one or more electricity generators 201, this or these generators 201 producing electricity from the useful fluid received directly from the pressure multiplication assembly 12 or second storage device(s) 22. According to the invention, electricity generator 201 is understood to mean a turbogenerator (assembly formed by a turbine coupled to an alternator), but also any type of coupling of a turbine or a vane or lobe motor with an independent alternator, the useful fluid circulating in the circulation duct causing the rotation of the output shaft of the turbine or of the motor coupled to the input shaft of the alternator and , thus, the production of electricity at the output of the alternator.
    According to a particular embodiment, the generator 201 comprises a pneumatic gear motor associated with an alternator.
    Other systems capable of driving a shaft in rotation under the action of the circulation of the useful fluid can be envisaged, for example a rotary piston.
    These systems are also covered by the term electricity generator, within the meaning of the invention.
    The useful fluid corresponds for example to air comprised according to this fourth embodiment.
    When several electricity generators 201 are implemented, the latter are advantageously arranged in parallel.
    The electricity generators 201 mounted in parallel are for example supplied with useful fluid via a distribution ramp associated with means for managing the supply of each generator with useful fluid.
    According to a variant embodiment, a pressure reducer is arranged between the storage device 22 and the electricity generator(s) 201 to lower the pressure to an acceptable level for the generator(s) 201.
    The electricity thus generated is for example returned to an electrical network, for example an internal or domestic network (for example to an electrical network in a home, in the context of energy self-consumption for example) or an external or public network managed by an electricity transmission network operator, such an external network being called a “grid” in English. As part of an energy self-consumption model, the compression system 2 is for example installed near a dwelling or a residential complex. The useful fluid, for example air, is compressed as objects (for example vehicles) pass over the compression means 11, via the pressure multiplication assembly 12 and stored in the or the second storage devices 22 at the second determined pressure. The useful fluid stored in this way is then used to generate electricity as needed, for example during consumption peaks when residents are back in their homes. Such a mode of production and consumption of energy is particularly efficient in that it limits the losses due to the transport of electricity in the network. Such a mode of energy production and consumption is also economically and ecologically relevant in that it uses the unused kinetic energy of moving objects to compress a non-polluting useful fluid (typically air) to then generate electricity. According to another example, the compression system 2 further comprises one or more batteries configured to locally store the energy thus produced by the electricity generator(s) 201. According to another example, the electricity is generated on demand for charging the batteries of an electric vehicle, for example at the home of the owner of the electric vehicle or at an electric vehicle charging station.
    According to a fifth embodiment, the compression system 2 further comprises one or more distribution devices 202 of the useful fluid.
    Such a dispensing device 202 corresponds for example to a system configured to refill the reservoir of a compressed air engine (for example on board a vehicle) from the useful fluid stored in the second storage device 22, such a system comprising optionally a pressure reducer to lower the pressure from the second pressure value determined to the storage pressure of the compressed air in the tank associated with the compressed air motor.
    According to another example, such a distribution device 202 corresponds to a system configured to recharge the tank associated with a fuel cell, for example on board a vehicle.
    The compression system 2 is for example integrated into a hydrogen station to compress the hydrogen stored in low pressure tanks (for example the third storage device(s) 23) and bring the hydrogen to a second determined pressure value equal by example at 350 and/or 700 bars for storage in the second storage device(s) 22, before being distributed via the distribution device 202 into the tank of a vehicle, for example. [Fig. 3] schematically illustrates compression means 11 arranged in a portion of roadway 30, according to a particular and non-limiting embodiment of the present invention.
    Figure 3 illustrates the compression means according to a cross section, that is to say according to the plane (XZ) of an orthonormal reference XYZ.
    The compression means 11 advantageously comprise one or more plates 31 arranged above one or more compression devices 32 as well as return means 33 configured to bring the compression means back to their initial position when an object is passed over the plate or plates 31 and that this object is no longer on the plate or plates 31. The plate or plates 31 are arranged in the roadway 31 at the place where the vehicles or other moving objects pass so that the vehicles or objects move the plate(s) 31 into the roadway to press the compression device(s) 32. Each plate 31 is advantageously arranged in the roadway so that the upper face of each plate 31 is at the same level as the roadway 31 In other words, the upper face of each plate 31 belongs to the plane (XY) formed by the pavement 30 so that there is continuity between the pavement and the plate. 31, with a tolerance of a few millimeters. Each plate 31 is made of a material resistant to the mass of the vehicles traveling over it, for example made of a metallic, composite or plastic material.
    According to an optional variant, guide means are provided to provide translational guidance of the plate 31 along the Z axis when the plate sinks into the roadway under the weight of a moving object passing over it and to provide guidance in translation of the plate 31 when the latter returns to its initial position when no object exerts weight on the plate 31. The compression means 11 also comprise one or more compression devices 32. Each compression device 32 comprises a chamber, that is to say a space, configured to receive a determined volume of working fluid, for example air. Each compression device 32 is arranged below the plate or plates 31 (along the Z axis) so that the passage of a moving object over the plate or plates 31 causes a depression or a lowering of the plate or plates 31 in the roadway (for example according to a translational movement of a few centimeters, for example along the Z axis, downwards), the depression of the plate(s) 31 into the roadway causing each compression device 32 to be crushed. dimensions of a plate 31 are advantageously greater than the dimensions of the compression device 32 so that a plate 31 exerts a pressure force over the entire length of the compression device when the plate sinks into the roadway during the passage of a movable object on the plate 31. When the compression means 11 comprise several compression devices 32, the latter are advantageously arranged parallel to each other, each compression device being p ar example arranged perpendicular to the direction of movement of vehicles or moving objects on the roadway 30.
    According to the example of Figure 3, each compression device 32 corresponds to a hermetic envelope forming the chamber receiving the working fluid. The casing is for example formed of a membrane formed of an elastically deformable material, for example rubber. According to a variant, the membrane of the envelope is formed of several layers, for example a layer of textile type (for example polyester) and a layer made of rubber or comprising rubber. The pressure force exerted by the plate or plates 31 on each compression device 32 during the passage of a moving object over the plate 31 makes it possible to crush the compression device 32, thus causing an increase in the pressure of the working fluid enclosed in the chamber of the compression device 32. The compression means 11 comprise a set of non-return devices (valve or non-return valve). For example, a first non-return device 321 and a second non-return device 322 are associated with each compression device
    32. According to a variant, a first non-return device 321 is common to several compression devices 32 (for example a first non-return device 321 is associated with an intake manifold serving several compression devices 32 arranged in parallel) and a second non-return device 322 is common to the plurality of compression devices 32 (for example a second non-return device 322 is associated with an exit (or discharge or evacuation) ramp connecting several compression devices 32 arranged in parallel). The first non-return device 321 is configured or adapted to allow the passage of air from the atmosphere to the inside of the casing 32 during an admission phase of the motive fluid in the compression device 32. The first non-return device 321 is also configured or adapted to prevent the motive fluid from escaping from the casing 32 to the atmosphere during the compression phase, that is to say when the plate 31, under the weight of a mobile object passing over it, exerts a pressure force on the compression device 32. Thus, the first non-return device 321 is provided to let air enter the envelope when the pressure in the envelope 32 is less than or equal to atmospheric pressure and to prevent air from leaving the envelope 32 to the atmosphere when the pressure in the envelope is greater than atmospheric pressure.
    The second non-return device 322 is configured or adapted to let the working fluid exit from the casing 32 when the pressure in the casing 32 is greater than or equal to the second determined pressure value. The second non-return device 322 is also configured or adapted to prevent the return of working fluid into the casing 32 from the pressure multiplication assembly 12 or from the first storage device 21 during the fluid intake phase. motor in the compression device 32 (according to the phase of compression of the working fluid and the phase of delivery or exit of the working fluid at the second pressure determined towards the pressure multiplication assembly 12 or towards the first storage device 21). The compression means 11 further comprise means 33 for returning the compression means 11 to a rest position, also called the initial position. The rest position corresponds to the position in which the compression means 11 is located when no object is on the plate or plates 31. The compression means 11 thus pass from the rest position to a compression position when an object passes over the plate(s), causing the plate(s) to sink into the roadway and compression or crushing of the compression device(s) 32. The return means 33 correspond, for example, to one or more reminder. The springs are for example fixed to the plate 31 at their upper end and to the ground or to a base at their lower end. When the plate 31 sinks into the roadway under the weight of an object passing over it, the spring(s) 33 are compressed. When the object is no longer on the plate, the spring or springs 33 exert a return force on the plate 31 to bring it back to its initial or rest position. According to this example, the plate 31 is advantageously connected to the compression device 32 to return the compression device to its initial position at the same time as the plate. Forcing the return of the compression device 32 makes it possible to generate a depression in the compression device 32 and to generate a call for air from the atmosphere via the first non-return device 321, thus accelerating the filling with motive fluid (air) of the chamber formed by the envelope 32.
    According to a variant embodiment, the springs 33 are arranged inside the compression device 32 (that is to say the envelope). According to this variant, the plate 31 is not fixed to the casing 32. The casing 32 being positioned below the plate 32, the restoring force exerted by the spring or springs arranged in the casing 32 allow the envelope to return to its original shape, at the same time causing the plate 31 to its initial position.
    Of course, the return means 33 can correspond to other devices, for example to a single-acting hydraulic cylinder incorporating a return spring or any return device. The jack or jacks also ensure, for example, the guiding of the plate 31 during its translation along the Z axis.
    According to another exemplary embodiment, the return means are ensured by the plate 31 itself. According to this example, the plate is made of a shape-memory material which ensures that the plate returns to its initial position or shape after a moving object has passed over it. According to a variant, the shape of the plate is provided to promote the return to the initial shape or position. For example, the plate 31 is convex in shape, that is to say slightly curved upwards. According to this example, the plate 31 is advantageously fixed to the compression device to drive the compression device towards its initial position or shape after having been crushed by the plate 31. According to this example, the plate 31 is advantageously fixed to the roadway, by example at one or more points of the edges or the contour of the plate 31.
    According to an optional embodiment, the compression means further comprise one or more air intake ducts 34 from the atmosphere, optionally associated with a filter configured to filter impurities and dust and prevent the latter from entering in the compression device 32. The inlet duct is advantageously connected to the first non-return device 321. The end of the duct 34 which is not connected to the first non-return device 321 is connected to the open air, optionally protected by a cap to prevent rain from entering conduit 34. At least part of this conduit 34 is outside the roadway 30, rising above the ground. According to another optional variant embodiment, the compression means 11 further comprise one or more outlet or discharge ducts 35 for the motive fluid connecting the compression device 32 to the pressure multiplication assembly 12 or the first storage device 21 via the second non-return device 322. At least part of this duct 35 is outside the roadway.
    [Fig. 4] schematically illustrates compression means 11 arranged in a portion of roadway 40, according to another particular and non-limiting embodiment of the present invention.
    FIG. 4 illustrates the compression means 11 according to a cross section, that is to say according to the plane (YZ) of an orthonormal reference XYZ.
    The portion of roadway 40 illustrated in FIG. 4 comprises, for example, a raised part corresponding, for example, to a speed bump (also called a speed bump).
    The compression means 11 of FIG. 4 comprise, like those of FIG. 3, one or more plates 31, one or more compression devices 42, return means 33, one or more first non-return devices 321, one or more several second non-return devices 322, one or more inlet ducts 34 and one or more outlet or discharge ducts 35.
    The plate(s) 31, the return means 33, the first non-return device(s) 321, the second non-return device(s) 322, the inlet duct(s) 34 and the outlet or discharge duct(s). 35 have been described opposite the figure
    3.
    The compression device 42 advantageously corresponds to a pump comprising a piston according to the example of FIG. 4, the volume of the chamber containing the working fluid varying according to the stroke of the piston. The increase in pressure in the chamber is generated by the stroke of the piston during the compression phase of the working fluid, the stroke of the piston increasing as the pressure force is exerted by the plate 31 on the compression device. The pump 42 is for example inclined with respect to the horizontal plane to reduce the size of the compression device under the plate 31 and the roadway 40. The pump 42 is for example of the pedal foot pump type, the pedal of the pump 42 being fixed to the plate 31. Of course, the pump 42 illustrated in FIG. 4 is not limited to a pump of the pedal foot pump type but extends to any pump system allowing a fluid to be compressed, for air.
    [Fig. 5] schematically illustrates the pressure multiplication assembly 12, according to a particular and non-limiting embodiment of the present invention. According to the particular example of FIG. 5, the pressure multiplication assembly 12 comprises two pressure multipliers 51, 52 arranged in series. The invention is however not limited to a pressure multiplier assembly 12 comprising two pressure multipliers but extends to an assembly comprising any number of pressure multipliers, for example 1, 3, 4, 5, 10 pressure arranged in series. A series arrangement means that a pressure multiplier following a previous pressure multiplier in the series is fed (driven) by the output of the previous pressure multiplier. A pressure multiplier, also called a "booster", is known to those skilled in the art and described for example in the document WO0150033A1 published on July 12, 2001. The pressure multiplication assembly 12 of FIG. 5 comprises a first pressure multiplier 51 driven or fed by the motive fluid at the output of the compression means 11 or at the output of the first storage device 21, the first pressure multiplier 51 forming a first stage of overpressure or pressure multiplication. The pressure multiplication assembly 12 of FIG. 5 also comprises a second pressure multiplier 52 driven or powered by the fluid at the outlet of the first pressure multiplier 51, the second pressure multiplier 52 forming a second overpressure or multiplication stage pressure, the second pressure multiplier 52 making it possible to raise the pressure of the useful fluid to the second determined pressure value P2.
    The first pressure multiplier 51 comprises an inlet conduit 511 for the motive fluid supplied by the compression means or the first storage device at the first determined pressure value P1. The motive fluid enters a chamber 512 and exerts a pressure force on a first piston 513 on a surface S1 of the piston. When the first piston 513 reaches the end of its stroke, the motive fluid contained in the chamber 512 is evacuated from the chamber 512 via an outlet or evacuation conduit 514. When the motive fluid corresponds to air, the conduit of outlet 514 is for example directly connected to the atmosphere, no pollution being generated since the working fluid is air. When the first piston 513 reaches the end of its travel and the motive fluid escapes from the chamber 512, the pressure falls in the chamber and the first piston 513 is returned to its initial position via return means not shown in the figure. 5. A new compression cycle can then start again. The first piston 513 is connected to a second piston 516, the second piston 516 being driven in translation in a cylinder by the first piston 513. The stroke of the second piston 516 reduces the volume of the chamber 517 and compresses the fluid contained in this chamber 517. An inlet conduit 515 with fluid makes it possible to supply the chamber 517 at the start of the compression cycle, before the first piston 512 begins its stroke causing the compression of the fluid contained in the chamber 517. The fluid contained in the chamber 517 corresponds for example to air coming from the atmosphere at atmospheric pressure PO or from a storage device at an inlet pressure PA1. The second piston has a compression surface S2 less than S1. An outlet or evacuation conduit 518 for the fluid contained in the chamber 517 makes it possible to evacuate the fluid from the chamber when the latter has reached a determined pressure, the conduit 518 being associated with a check valve or a non-return valve authorizing the outlet of the fluid when the latter has reached the outlet pressure. The pressure multiplication in the first pressure multiplier is obtained thanks to the surface ratio between the first piston 513 and the second piston
    516 which makes it possible to obtain the compression ratio associated with the first pressure multiplier 51. The pistons are for example controlled by 5/2 valves (not shown), themselves controlled by 2 pneumatic limit switches (not shown).
    The operation of the second pressure multiplier 52 is identical to that of the first pressure multiplier 51, the second pressure multiplier 52 being driven or fed by the fluid leaving the first pressure multiplier 51 via the outlet conduit 518 at an outlet pressure PS1.
    The second pressure multiplier 52 thus comprises an inlet conduit 521 for the motive fluid supplied by the first pressure multiplier 51 at the pressure value PS1. The motive fluid enters a chamber 522 and exerts a pressure force on a first piston 523 on a surface S3 of the piston. When the first piston 523 reaches the end of its stroke, the working fluid contained in the chamber 522 is evacuated from the chamber 522 via an outlet or evacuation pipe 524. When the working fluid corresponds to air, the outlet 524 is for example directly connected to the atmosphere, no pollution being generated since the working fluid is air. When the first piston 523 reaches the end of its travel and the motive fluid escapes from the chamber 522, the pressure falls in the chamber and the first piston 523 is returned to its initial position via return means not shown in the figure. 5. A new compression cycle can then start again. The first piston 523 is connected to a second piston 526, the second piston 526 being driven in translation in a cylinder by the first piston 523. The stroke of the second piston 526 reduces the volume of the chamber 527 and compresses the useful fluid (for example air or hydrogen) contained in this chamber 527. An inlet duct 525 with useful fluid makes it possible to supply the chamber 527 at the start of the compression cycle, before the first piston 522 begins its stroke causing the compression of the fluid contained in the chamber 527. The useful fluid contained in the chamber 527 corresponds for example to air coming from the atmosphere at atmospheric pressure PO or from a storage device at an inlet pressure PA2 , or to hydrogen or another gas from a storage device at an inlet pressure PA2. The second piston has a compression surface S4 less than S3.
    An outlet or evacuation conduit 528 for the useful fluid contained in the chamber 527 makes it possible to evacuate the fluid from the chamber when the latter has reached a determined pressure, the conduit 528 being associated with a check valve or a non-return valve authorizing the outlet of the fluid when the latter has reached the outlet pressure. The multiplication of pressure in the second pressure multiplier is obtained thanks to the surface ratio between the first piston 523 and the second piston 526 which makes it possible to obtain the compression ratio associated with the second pressure multiplier 52. The useful fluid is then released from the pressure multiplication assembly 12 via a pipe 121, for example to the second storage device 22.
    Other types of pressure multiplier can also be used according to the invention, for example one or more single-stage, double-chamber pressure multipliers; and/or one or more two-stage pressure intensifiers.
    By way of example, the pressure of the motive fluid (for example air) at the inlet of the first multiplier 51 is equal to 8 bars and the pressure of the fluid at the outlet of the first multiplier 51 is equal to 50 bars. The pressure of the working fluid (for example air) at the inlet of the second multiplier 52 is equal to 50 bars and the pressure of the useful fluid (for example air) at the outlet of the second multiplier 52 is equal to 200 bars. According to another example for which the assembly 12 comprises three pressure multipliers in series, the pressure of the working fluid (for example air) at the inlet of the first multiplier is equal to 8 bars and the pressure of the fluid at the outlet of the first multiplier 51 equals 50 bars. The pressure of the working fluid (for example air) at the inlet of the second multiplier is equal to 50 bars and the pressure of the fluid (for example air) at the outlet of the second multiplier is equal to 100 bars. The pressure of the working fluid (for example air) at the inlet of the third multiplier is equal to 100 bars and the pressure of the useful fluid (for example hydrogen) at the outlet of the third multiplier is equal to 300 bars.
    Of course, the invention is not limited to the embodiments described above but extends to a method of compressing a useful fluid implemented by the system 1 or 2.
    The invention relates to a system for distributing the useful fluid compressed via the compression system 1 or 2.
    权利要求:
    Claims (11)
    [1]
    1. System for compressing a useful fluid, said compression system comprising means (11) for compressing a working fluid at a first determined pressure, said compression means (11) being arranged at least partially in a portion of a roadway (30, 40), said compression means (11) being actuated by a passage of at least one object (10) over said portion of the roadway (30, 40), characterized in that it comprises a pressure multiplier assembly (12) which comprises a plurality of pneumatically operated pressure multipliers (51, 52) arranged in series, each pressure multiplier (51, 52) of said plurality being configured to increase the pressure by an amount inlet pressure to an outlet pressure value, a first pressure multiplier (51) of said series being fed by said motive fluid at said first determined pressure, each pressure multiplier (52) following a previous multiplier of pressure (51) in said series being supplied with a fluid at the outlet pressure of the previous pressure intensifier (51) in said series.
    [2]
    2. Compression system according to claim 1, for which said motive fluid corresponds to air, said compression means (11) of said motive fluid comprising: - at least one compression device (32, 42) of said motive fluid, each compression device (32, 42) comprising a chamber configured to receive a determined volume of said motive fluid, a first end of said compression device (32, 42) being connected to the atmosphere via a first non-return device (321) configured to supply said chamber with air from the atmosphere, a second end of said compression device (32, 42) being connected to said pressure multiplication assembly (12) via a second non-return device (322) configured to supply said assembly pressure multiplication (12) when a pressure in said chamber is greater than or equal to said first determined pressure; - at least one plate (31) arranged above said at least one compression device (32, 42) and configured to exert a compression force on said at least one compression device (32, 42) when said at least one object (10) passes over said at least one plate (31); and - return means (33) configured to cause said compression means (11) to return to an initial position after said passage of said at least one object (10) over said portion of the roadway.
    [3]
    3. Compression system according to claim 2, for which each compression device (32) corresponds to a closed envelope formed of an elastically deformable material, said closed envelope forming said chamber, said at least one plate (31) being configured to move from said initial position to a compression position when said at least one object (10) passes over said at least one plate (31) and to return to said initial position under the effect of said return means (33) when said at least least one object (10) is no longer positioned on said at least one plate (31).
    [4]
    4. Compression system according to claim 2, wherein each compression device (42) corresponds to a pump comprising a sliding piston varying a volume of said chamber, said pump being actuated by the compression force exerted by said at least one plate (31), said at least one plate (31) being configured to pass from said initial position to a compression position when said at least one object (10) passes over said at least one plate (31) and to return to said initial position under the effect of said return means (33) when said at least one object (10) is no longer positioned on said at least one plate (31).
    [5]
    5. Compression system according to one of claims 2 to 4, wherein said at least one compression device (32, 42) is fixed to said at least one plate (31).
    [6]
    6. Compression system according to one of claims 1 to 5, further comprising at least one first storage device (21) and at least one second storage device (22), said at least one first storage device (21 ) being configured to store said motive fluid at said first determined pressure, said at least one first storage device (21) being arranged between said compression means (11) and said pressure multiplication assembly (12), said at least one second storage device (22) being configured to store said useful fluid at said second determined pressure.
    [7]
    7. Compression system according to claim 6, further comprising a distribution device (202) of said useful fluid arranged at the outlet of said at least one second storage device (22).
    [8]
    8. Compression system according to one of claims 1 to 6, further comprising at least one electricity generator (201) configured to generate electricity from said useful fluid.
    [9]
    9. Compression system according to claim 8, further comprising at least one electricity storage device connected to said at least one electricity generator (201) and configured to store the electricity generated by said at least one electricity generator. electricity (201).
    [10]
    10. Compression system according to one of claims 1 to 9, for which said useful fluid belongs to a set of fluids comprising: air; - hydrogen; - methane.
    [11]
    11. Compression system according to one of claims 1 to 10, for which said first determined pressure is between 4 and 10 bars and said second determined pressure is between 80 and 800 bars.
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    同族专利:
    公开号 | 公开日
    FR3112581A1|2022-01-21|
    BE1028492A1|2022-02-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    NO309539B1|1999-12-29|2001-02-12|Kongsberg Automotive Asa|Pressure converter|
    WO2012134060A2|2011-03-27|2012-10-04|Lee Sungwoo|Oil pressure supply device for driving generator|
    KR101179107B1|2011-10-28|2012-09-07|박광|Pneumatic generation apparatus and power generation system using load of vehicles|
    US10079524B1|2016-05-12|2018-09-18|Jerry W. Polanich|Railroad powered energy recovery system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR2007548A|FR3112581A1|2020-07-17|2020-07-17|Fluid compression system|
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