• 专利附录
  • 专利说明
  • 权利要求
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    • 专利摘要:
    The energy-optimized reverse installation (30) comprises: - at least one compressor (21) between a gas network (15) at a first pressure and a gas network (10) at a second pressure greater than the first pressure , the compressor being driven by an electric motor, - an automaton (25) for controlling the operation of each compressor, - at least one sensor (19) for the conformity of the quality of the gas circulating in the compressor, - at least one counter (20 ) to count a flow of gas circulating in the compressor, - at least one filter (22) for filtering the gas circulating in the compressor, - a gas pressure regulator for relieving gas initially at the second pressure to supply the gas network to the first press and - a generator driven by the gas pressure regulator.
    公开号:FR3082597A1
    申请号:FR1855299
    申请日:2018-06-15
    公开日:2019-12-20
    发明作者:Daniel Dufour；Alban Sesmat；Francis Bainier
    申请人:GRTgaz SA；
    IPC主号:
    专利说明:

    TECHNICAL AREA
    The present invention relates to a reverse installation with energy optimization. It applies, in particular, to gas transport networks to export surplus renewable gas from a distribution network to a transport network, which has a much higher storage capacity.
    STATE OF THE ART
    Biogas production is experiencing strong growth in Europe and its development conditions the creation of a long-term methanisation sector. In the following, "biomethane" defines the gas produced from raw biogas from anaerobic methanisation of organic waste (biomass) or by high temperature gasification (followed by synthesis by methanation); purified and treated so as to make it interchangeable with natural network gas.
    While the most common recovery method is the production of heat and / or electricity, recovery in the form of fuel and the injection of biomethane into the natural gas network are also being developed.
    In a context of strong development of biomethane, natural gas distributors are faced with situations of lack of an outlet. In fact, consumption by domestic customers varies on average from 1 to 10 between winter and summer on public distributions. The injection of biomethane is initially only possible if it is carried out at a flow lower than the minimum flow recorded during periods of lower consumption or if the biomethane is produced as close as possible to consumption. When production exceeds the quantities consumed, this tends to saturate the distribution networks during the hot seasons. This situation limits the development of the biomethane production sector through congestion in the natural gas distribution networks. Several solutions have been identified to solve this problem: the networking of distribution networks to increase the consumption capacities of biomethane produced by the multiplication of connected consumers, the modulation of biomethane production according to seasons and consumption needs, micro -liquefaction and compression to store biomethane productions during seasons of low consumption, the development of gas uses (for mobility, in particular), as well as the creation of back-up stations between gas distribution and transport networks natural.
    Back-up facilities are thus one of the solutions identified to develop biomethane injection capacities. These facilities make it possible to export surplus biomethane from a distribution network to the transport network, compressing and re-injecting them into this transport network, thereby benefiting from its greater gas storage capacity. Thus, producers should no longer limit their production and the profitability of their projects would be more easily ensured. The countdown station is a work of the transport operator allowing the transfer of gas from the distribution network to the transport network with a large storage capacity, through a gas compression station. The countdown station can be located either near the detent station or at another location where the transport and distribution networks intersect.
    The existing countdown stations have the disadvantage of having high investment and operating costs, particularly in terms of electricity consumption.
    STATEMENT OF THE INVENTION
    The present invention aims to remedy all or part of these drawbacks.
    To this end, the present invention relates to an energy-optimized countdown installation comprising:
    - at least one compressor between a gas network at a first pressure and a gas network at a second pressure greater than the first pressure, the compressor being driven by an electric motor,
    - an automatic control system for the operation of each compressor,
    - at least one conformity sensor for the quality of the gas circulating in the compressor,
    - at least one counter for counting a flow of gas circulating in the compressor,
    - at least one filter to filter the gas circulating in the compressor,
    - a gas pressure regulator for expanding gas initially at the second pressure to supply the gas network at the first pressure, and
    - a generator driven by the gas pressure regulator.
    Thanks to these provisions, the expansion of the gas at the high pressure of a transport network to the low or medium pressure of a distribution network generates electricity which can then be used to drive the electric motor of the compressor. .
    The present invention thus optimizes the energy consumption of a back-up installation associated with a gas delivery station. It uses the expansion energy from the gas delivery station and minimizes the operating cost of the back-up installation linked to compression energy consumption.
    In embodiments, the compressor and the gas pressure regulator are combined.
    Thanks to these provisions, the manufacturing cost of the backing installation is reduced.
    In embodiments, the generator consists of the electric motor of at least one compressor.
    Thanks to these provisions, the manufacturing cost of the backing installation is reduced.
    In embodiments, the reverse installation includes a clutch between the gas regulator and the generator.
    Thanks to these provisions, if the generator consists of the electric motor of a compressor, the operation of the compressor does not cause the gas regulator.
    In embodiments, the reverse installation includes a clutch between the compressor motor and the compressor.
    Thanks to these provisions, if the generator consists of the electric motor of a compressor, the operation of the gas pressure regulator does not drive the compressor.
    In embodiments, the back-up installation comprises a means for venting the gas pressure regulator.
    Thanks to these provisions, if the generator consists of the electric motor of a compressor, the operation of the compressor consumes little energy at the gas pressure regulator because the gas pressure regulator is then vented.
    In embodiments, the reverse installation includes a means for venting the compressor.
    Thanks to these provisions, if the generator consists of the electric motor of a compressor, the operation of the gas pressure regulator is little disturbed by the operation of the compressor which is then vented.
    In embodiments, the back-up installation further comprises a gas pressure regulator without energy recovery in parallel with the gas pressure regulator driving the generator. In these embodiments, an existing delivery station with expansion valve is modified and a parallel circuit is added to it for passing the gas through a gas pressure regulator driving the generator. These embodiments allow two gas circuits to coexist, with the possibility of using the expansion station in conventional operation or as an electricity generator.
    In embodiments, the compressor is a piston and valve compressor.
    In embodiments, the compressor is a centrifugal compressor with variable blades.
    Thanks to each of these arrangements, the compressor is reversible as a generator drive regulator.
    BRIEF DESCRIPTION OF THE FIGURES
    Other advantages, aims and characteristics of the present invention will emerge from the description which follows, given for explanatory purposes and in no way limiting, with reference to the appended drawings, in which:
    FIG. 1 represents, in the form of a block diagram, a reverse installation known in the prior art,
    FIG. 2 represents, in the form of a block diagram, a reverse installation object of the invention,
    FIG. 3 represents, in the form of a block diagram, a first particular embodiment of a countdown installation object of the invention,
    FIG. 4 represents, in the form of a block diagram, a second particular embodiment of a countdown installation object of the invention,
    FIG. 5 represents, in the form of a block diagram, a third particular embodiment of a countdown installation object of the invention,
    - Figures 6A, 6B and 6C show several operating phases of a reversible piston compressor,
    FIG. 7 represents the cylinder and piston assembly of a reversible piston compressor in the case of a double-effect piston,
    FIGS. 8A to 8D represent the operating principle of the use of the reversible piston compressor in engine mode,
    FIG. 9 represents the position of variable blades of a reversible centrifugal compressor in its function of recovering energy from gas expansion, and
    - Figure 10 shows the position of the variable blades of the compressor illustrated in Figure 9, in its compression function.
    DESCRIPTION OF EMBODIMENTS OF THE INVENTION
    FIG. 1 schematically represents the principle of a reverse installation known in the prior art. The back-up installation has a set of technical functions allowing the creation of a gas flow by controlling the operating conditions specific to a transport network 10 and to a distribution network 15. These functions include:
    the treatment and control 19 of the conformity of the quality of the gas to the technical prescriptions of the transport operator comprising at least one sensor of a constituent of the gas in circulation, the counting by meter 20 of the quantities transferred, the compression of the gas from of the distribution network 15, by at least one compressor 21, these are generally compressors with an electric motor and with pistons, with two or three stages of compression, regulation 24 in pressure or in flow, filtration by filter 22, upstream and downstream, the management 18 of the stable operation of the distribution network, the security organs 26 and the steering tools 24 and monitoring of the reverse installation.
    These different functions are described below. In addition, there are utilities (electrical sources, communication network, etc.) necessary for the operation of an industrial installation. The reverse installation is dimensioned taking into account:
    the operating pressure of the transmission network 10 and that of the distribution network 15. The first must be between 30 and 60 bars on the regional network and can reach 85 bars on the main network. The second is of the order of 4 to 19 bars on MPC networks (Medium Pressure Network type C, i.e. a pressure between 4 and 25 bars) and less than 4 bars on MPB networks (Medium Pressure Network type B, i.e. a pressure between 50 millibars and 4 bars), of the maximum production capacity of biomethane producers 17 likely to inject biomethane into the distribution network 15, capacity which varies from a few tens of Nm 3 / h for the smallest units, at several hundred Nm 3 / h for the largest, of the consumption of consumers 16 on the distribution network
    15, in particular the minimum consumption and the ability of the distribution network 15 to absorb pressure variations (volume of water).
    All of this data makes it possible to determine the maximum flow rate of the reverse installation and to estimate its operating time. This duration can vary, depending on the case, from occasional operation (10 to 15% of the time) to quasi-permanent operation. This exercise must also integrate the fact that the producers' installations 17 are not put into service simultaneously but over the years.
    Regarding the analysis 19 of gas compliance, differences exist between the gas quality specifications applied to the transmission 10 and distribution networks 15, due to the different operating pressures, infrastructure, materials, uses and interfaces with underground storage. The specifications of the transport networks 10 are generally more restrictive than those of the distribution networks 10. Thus, to guarantee that the installation of gas back-flows from the distribution network 15 to the transport network 10 fits into operational operation of the transmission network 10, the following provisions are integrated into the gas quality compliance function 19:
    a dehydration unit upstream of compression to reduce the risk of condensation on the high pressure transport network, formation of hydrates and corrosion, optional, a laboratory for analysis of combustion parameters (Wobbe index , calorific value and gas density) to inject inject the readings into the energy operator's system for determining the energies.
    At the discretion of the transport operator, the analysis of other contents of compounds (CO2, H2O, THT, etc.) is optional and is only carried out if there is a proven risk of contamination of the transport 10 (example: reverse of a biomethane with a high CO2 content without possibility of dilution on the distribution networks 15 and transport 10, or operated at a very high pressure).
    Regarding gas metering 20, the reverse installation is equipped with a metering chain consisting of a meter and a device for determining local or regional energy in accordance with legal metrology.
    Concerning gas compression, the compression unit makes it possible to compress the surplus production of biomethane to the operating pressure of the transmission network 10. Depending on economic criteria and availability of the installation, several configurations are possible, by example:
    a compressor 21 achieving 100% of the maximum reverse count, two compressors 21 each achieving 100% of the maximum reverse count or two compressors 21 each achieving 50% of the maximum reverse count.
    The configuration is chosen by studying the various advantages and disadvantages in terms of cost, availability, size, and the possibility of upgrading the compression unit. The suction pressure to be considered is the operating pressure of the distribution network 15, which depends in particular on the injection pressures of the biomethane producers 17. The construction pressure at the discharge to be considered is the maximum operating pressure ("PMS") ) of the transport network, for example 67.7 bars. To ensure start-up, anti-pumping protection for each compressor 21 (except piston compressor) or stabilized recycling operation, a recycling circuit 27 provided with a valve 28 can be provided. The recycling circuit expands gas at the second pressure and injects it upstream of the compressor when at least one compressor is put into operation, under the control of the controller 25.
    Each compressor 21 can be sealed with oil or with dry packing. In the first case, certain filtration arrangements are put in place (see below).
    An automaton 25 performs the control functions 24, control of each compressor and regulation and stability 18 of the network 15. It is noted that, throughout the description, the term "the automaton" means an automaton or a computer system or a set of automatons and / or computer systems (for example one automaton by function).
    Concerning regulation, the evolution of the pressure of the distribution network 15 near the back-up installation is correlated to the flow of gas passing through the back-up installation. These changes are the result of the dynamic operation of gas consumption on the distribution network 15, of the capacities injected with biomethane by producers 17 and of the operation of the delivery installation, through a valve 14, and countdown . We therefore integrate the possibilities of adapting the operating range of the suction pressure of the reverse installation, as well as regulating the compressors 21 which can anticipate the stresses exerted on the distribution network 15, according to the configurations encountered. This is a difference with delivery stations with no backflow, for which the pressure is regulated at the delivery point so as to be fixed, regardless of consumption by consumers 16. Consequently, the regulation mode (pressure or flow) of the reverse flow to the transport network 10 is suitable for the proper functioning of the reverse installation.
    According to the specifications of the compressors and to avoid their deterioration or due to the constraints linked to the operation of the transport network 10, filtration is provided in the gas quality compliance function, upstream of the compression to recover any liquids and dust contained in the gas coming from the distribution network 15. In addition, in the case of an oil-tight compressor 21, a coalescer filter 22 is installed at the outlet of the compressor 21, for example with a manual purge and a visual level.
    A cooling system 23 cools all or part of the compressed gas to maintain the downstream temperature, towards the transport network 10, at a value below 55 ° C (equipment certification temperature). To ensure the operation of the cooling system 23, it is dimensioned from relevant ambient temperature values according to meteorological history.
    The delivery station 12 is an installation, located at the downstream end of the transport network that allows the delivery of natural gas according to the needs expressed by the customer (pressure, flow, temperature ...). It is therefore the gas expansion interface from the transport network 10 to the distribution network 15 or to certain industrial installations. The delivery station 12 therefore incorporates expansion valves to reduce the pressure to adapt to the conditions imposed by the downstream.
    To avoid phenomena of instability, the back-up installation must not operate simultaneously with the expansion and delivery station 12 from the transport network 10 to the distribution network 15. Limit values for starting and stopping the installation of countdowns are fixed accordingly and each automaton 25 of an installation combining detent 12 and countdown is adapted so as to prohibit the simultaneity of these two functions. Back-up systems, during their start-up, operation and shutdown phase, limit disturbances in the upstream network (distribution 15) and the downstream network (transport 10), in particular by avoiding triggering pressure safety devices at the delivery station 12. The following parameters are taken into account:
    number of start and stop cycles of each compressor 21 and its compatibility with the recommendations of the supplier of compressor 21, starting and stopping of each compressor 21 by a routine, following a time delay, the use of a buffer volume (not shown) upstream of each compressor 21, to absorb variations in pressure and flow rate of the distribution network 15.
    A control and supervision function performed by the controller 25 makes it possible to obtain:
    an automatic operating mode, a display / supervision of the operation of the countdown installation and the start of the countdown installation.
    Data logging is performed to certify operating conditions.
    In an emergency, the back-up installation is isolated from the distribution network 15, by closing the valve 14. An “emergency stop” function makes it possible to stop and secure the back-up installation . The reverse installation is also fitted with pressure and temperature safety devices 26. There is no automatic venting unless safety studies contraindicate it. The back-up installation is equipped with fire and gas detection systems 26. A means of protection against overflow is provided to protect the devices, in the form of a physical organ such as a restriction orifice or by the 'through an automation.
    It is noted that the flow rate of a reverse can vary from a few hundred to a few thousand Nm 3 / h depending on the case.
    FIG. 2 shows a reverse installation 30 according to the invention. This reverse installation 30 comprises the same elements as the installation illustrated in FIG. 1, with the exception of the supply station 12. On the other hand, the installation 30 comprises a gas regulator 31 for relieving gas from the transport network 10 to supply the distribution network 15. The gas regulator 31 is provided with an electricity generator 32 driven by the gas regulator 31. A valve 33 makes it possible to isolate the transport 10 and distribution networks 15.
    The present invention seeks to optimize the energy consumption of a gas delivery station and a back-up installation. It seeks in particular to use the expansion energy of gas delivery stations and to minimize the operating costs of back-up facilities (operating expenses, in particular related to compression).
    The present invention applies in particular when the back-up installation is located near the delivery station, which is common because it is an obvious interface point between the transport and distribution networks.
    The invention proposes to combine the energy potentially available for expansion (delivery station) with the energy need necessary for compression (installation of back-ups).
    The energy optimization between the rebound installation and the delivery station is twofold: it wants both to recover the recoverable energy released during the expansion of the gas in the delivery station but also, for certain configurations, to pool components between the delivery station and the reverse installation. This reduces the operating and investment costs of these facilities.
    Three configurations are envisaged:
    - configuration 1, figure 3: a gas pressure regulator is positioned in parallel with the delivery station in order to recover the expansion energy with a generator which produces electrical energy. This production of electricity is separated from the back-up installation and can be distant from it,
    - configuration 2, figure 4: the compressor engine of the reverse installation is used as an alternator or generator. In this way, the energy recovered from the alternator during expansion serves to drive the back-up compressor, which then produces electrical energy and
    - Configuration 3, Figure 5: a reversible tool is used to achieve the compression necessary for the installation of countdowns, in one direction, and the expansion required at the delivery station, in the other direction. There is thus a reversible relaxation and reverse station.
    In each of the three configurations, energy optimization uses the expansion energy recovered during expansion and the delivery of gas to the distribution network to compress the gas during reverse operation.
    FIG. 3 shows a part of a countdown installation 40 which is the subject of the invention, in the first configuration mentioned above. This reverse installation 40 comprises:
    a gas pressure regulator 41 from the transport network 10 and supplying expanded gas to the distribution network 15, mechanically driving a generator 42,
    a means 43 for heating the gas coming from the transport network 10, upstream from the gas pressure regulator 41,
    an expansion valve 44 connected to the transport 10 and distribution 15 networks and
    - a compressor 45 for compressing gas from the distribution network 15 and injecting it into the transport network 10, driven by an electric motor 46.
    As is easily understood, during the supply of gas by the transport network 10 to the distribution network 15, the setting in motion of the gas regulator 41 causes the generation of electricity by the generator 42. On the contrary, during operation from the reverse compressor 45, electricity is consumed by the motor 46 which drives the compressor 45.
    FIG. 4 shows a part of a reverse installation 50 which is the subject of the invention, in the second configuration mentioned above. This reverse installation 50 comprises:
    a gas pressure regulator 51 from the transport network 10 and supplying expanded gas to the distribution network 15, mechanically driving a reversible generator 52,
    a means 53 for heating the gas coming from the transport network 10, upstream from the gas pressure regulator 51,
    an expansion valve 54 connected to the transport 10 and distribution 15 networks and
    - a compressor 55 for compressing gas from the distribution network 15 and injecting it into the transport network 10, driven by the reversible generator 52.
    As is easily understood, when gas is supplied by the transport network 10 to the distribution network 15, the setting in motion of the gas pressure regulator 51 causes the generation of electricity by the generator 52. On the contrary, during operation of the reverse compressor 55, electricity is consumed by the generator 52 then acting as a drive motor for the compressor 55.
    In this second embodiment, the generator 52 consists of the electric motor of at least one compressor 55. The manufacturing cost of the reverse installation is thus reduced.
    Preferably, the back-up installation comprises a clutch (not shown) between the gas regulator and the generator and / or a means for venting (not shown) the gas regulator.
    Thus, the operation of the compressor does not drive the gas pressure regulator.
    Preferably, the reverse installation comprises a clutch (not shown) between the compressor motor and the compressor and / or a means for venting (not shown) the compressor.
    Thus, the operation of the gas pressure regulator is little disturbed by the operation of the compressor which is then vented.
    FIG. 5 shows a part of a countdown installation 60 which is the subject of the invention, in the third configuration mentioned above. This countdown installation 60 comprises:
    a reversible compressor regulator 61 which expands the gas coming from the transport network 10 and which supplies expanded gas to the distribution network 15. This gas regulator is provided with a mechanical drive driving a reversible generator 62,
    a means 63 for heating the gas coming from the transport network 10, upstream from the gas pressure regulator 61,
    - an expansion valve 64 connected to the transport 10 and distribution 15 networks.
    When the reversible regulator 61 acts as a compressor to compress gas from the distribution network 15 and inject it into the transport network 10, it is driven by the reversible generator 62.
    As is easily understood, during the supply of gas by the transport network 10 to the distribution network 15, the setting in motion of the gas regulator 61 causes the generation of electricity by the generator 62. On the contrary, during operation from the gas pressure regulator to the back-up compressor, electricity is consumed by the generator 62 then acting as the compressor drive motor.
    In this third embodiment, the compressor and the gas pressure regulator are combined. This reduces the manufacturing cost of the counter installation.
    Preferably, in each of the illustrated embodiments, the compressor is a piston and valve compressor, in particular in the second and third configuration (Figures 4 and 5), in which the compressor is reversible as a generator drive regulator. However, the types of compressor / expansion valve that can be used to implement the invention also include, for example:
    centrifugal compressors, axial turbines, screw compressors and vane compressors.
    Regarding the reversibility of piston compression systems for an expansion energy use, gas circulation is ensured by valves also called valves.
    During compression, the valves allow gas to pass freely during the suction and discharge phases according to their function, and are sealed during the compression phase. The movement of the valves is only due to the pressure difference between the compression chamber and the suction or discharge manifold. For certain applications, to adjust the capacity of the compressor, the suction valves can be kept open, by a mechanical system, part of the compression phase. The main valve and piston positions are shown in Figures 6A to 6C. Each piston is driven by a motor. The passage from the rotary movement of the engine to the linear movement of each piston is carried out by a crankshaft system then connecting rod then stock then piston rod.
    Piston technologies are single acting (pressure on one side of the piston) or double acting (pressure on both sides of the piston). In FIG. 7, a double-acting piston is presented.
    The valve technologies currently used for current techniques are called in the context of this invention:
    - "autonomous valve" when their movement is naturally controlled by pressure and
    - "semi-piloted valve" when a position is imposed part of the compression cycle by a mechanical system.
    The compressor is reversible, that is to say it allows to relax a gas and to drive a generator. In this operating configuration, the compressor is transformed into an engine, the energy then coming from the pressure difference between the inlet gas (pressure from the transport network) and the outlet (pressure from the distribution network). Preferably, the reversible compressor is coupled to a reversible electric motor, that is to say that can be used as a generator. Thus, the system can be used as an electric generator or as a compressor depending on the needs and the pressures available.
    To make the piston compressor reversible, a new control mode is used. This control permanently controls the position of the valve through a mechanical system. This piloting mode is called a piloted valve. In the present description, a "piloted valve" designates a piloted or semi-piloted valve without distinction.
    For the sake of clarity, the system for transforming linear movement into rotary movement and vice versa is not described. We describe a double effect piston, equivalent to two single effect pistons in phase opposition. Note, however, that in the present invention, the number of pistons, as well as their phasing, is in no way limited to a double-acting piston. Depending on the expected performance, the number of pistons, their geometric positioning and their phasing is adapted.
    In each of FIGS. 6A to 8D, the low pressure side (distribution network) is at the top of the figure and the high pressure side (transport network) is at the bottom of the figure. In each of FIGS. 6A to 7, there is a piston 70 moving between two chambers 71 and 72, and valves 73 to 78.
    We observe, in FIG. 6A, a phase of filling the cylinder (chamber 71), in FIG. 6B, a compression phase in the cylinder (chamber 71) and, in FIG. 6C, a phase of emptying the cylinder (chamber 71) at high pressure.
    FIG. 7 represents the cylinder and piston assembly 70 in the case of a double-effect piston 70. The cylinder (chamber 71) having the most volume is called “main cylinder” or “rear cylinder”. The cylinder with the smallest volume (chamber 72) is called "secondary cylinder" or "front cylinder".
    FIGS. 8A to 8D represent the operating principle of the use of the reversible compressor in motor mode. In FIG. 8A, the main cylinder (chamber 71) begins to fill, the secondary cylinder (chamber 72) begins to rise in pressure. In FIG. 8B, the main cylinder continues to fill, the secondary cylinder is in the expansion phase (emptying on the low pressure side). The choice to maintain the forcing of the opening of the valve 77 on the high pressure side is determined by the design of the valve 77 and the expected performance of the system (compromise between expansion and power). In FIG. 8C, the expansion flow not being maximized, the end of the linear movement of the piston 70 is done by the expansion of the gas in the main cylinder. As part of the compromise between expansion and power, the valve 78 on the low pressure side can be closed before the end of the stroke of the piston 70. In FIG. 8D, the start of the return of the piston 70 via the secondary cylinder is observed.
    Regarding the reversibility of centrifugal compressors for an energy production use by expansion, the use of this centrifugation technology in energy production during an expansion process is called "turboexpander"
    (usually called by the English term turbo-expander).
    The turbo-expander is a centrifugal compressor in the compression direction, each system (reversible or not, but with its counterpart) is adapted to a compression or expansion rate and a flexibility of flow. For very high compression ratios, the piston or even the screw is used. The centrifugal compressor can also be used for very high compression ratios. A conventional assembly with a very high compression ratio for a gas with very low initial pressure is a screw compressor followed by a centrifugal compressor.
    Over the reverse pressure ranges, a piston compressor is suitable, but other configurations are possible in the reverse range, for example, two centrifugal compressors in series with intercooling.
    In the description which follows, the turboexpanders and centrifugal compressors are broken down into five functions:
    - inlet channel,
    - attack diffuser,
    - centrifugal wheel,
    - outlet diffuser and
    - output channel.
    In their implementation in the installation object of the invention, the functions of the input and output channels as well as the wheel are designed to be bidirectional. The reversibility of expansion or compression phenomena is achieved in the output diffuser in compression function which becomes an attack diffuser in expansion function. Reversibility is achieved via variable 80 vanes. The attack diffuser in compression function can be of variable blade design depending on the performance expected by one or the other use (compression or expansion). The input and output channels are bidirectional in design.
    In FIGS. 9 and 10, the number of blades 81 of the wheel 84 and of blades 80 variable in the diagrams is indicative. The angle of the blades 80 shown is adjustable as a function of expected performance (yield, rate, flow). The angle is given by the fine arrow 82 represented in FIG. 9 and by the fine arrow 85 represented in FIG. 10.
    FIG. 9 represents the position of the variable blades 80 in the turboexpander function. The double arrow in strong line 83 represents the modification of the axis of rotation of the blades 80. If only the angle of the blades 80 were modified, the system would be less efficient in its compression function due to the greater space between the blades 80 and the wheel 84. FIG. 10 represents the position of the variable blades 80 in the compression function.
    Regarding the reversibility of screw or vane compressors for an energy production use by expansion, these can be designed reversibly or keep a design favoring optimum efficiency in a preferred direction.
    Note that, in each of the embodiments shown in the 10 figures, the reverse installation includes, in addition, a gas pressure regulator without energy recovery in parallel with the gas pressure regulator driving the generator. However, this regulator without energy recovery, for example consisting of an expansion valve, is optional.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. Installation of counters (30, 40, 50, 60) with energy optimization comprising:
    - at least one compressor (21, 45, 55, 61) between a gas network (15) at a first pressure and a gas network (10) at a second pressure greater than the first pressure, the compressor being driven by a electric motor (46, 52, 62),
    - an automaton (25) for controlling the operation of each compressor,
    - at least one conformity sensor (19) for the quality of the gas flowing in the compressor,
    - at least one counter (20) for counting a flow of gas circulating in the compressor,
    - at least one filter (22) for filtering the gas circulating in the compressor and
    - a gas pressure regulator (41, 51, 61) for expanding the gas initially at the second pressure to supply the gas network at the first pressure;
    characterized in that it further comprises:
    - a generator (42, 52, 62) driven by the gas pressure regulator.
    [2" id="c-fr-0002]
    2. Reverse installation (30, 60) according to claim 1, in which the compressor (61) and the gas pressure regulator (61) are combined.
    [3" id="c-fr-0003]
    3. Reverse installation (30, 50, 60) according to one of claims 1 or 2, wherein the generator (52, 62) consists of the electric motor of at least one compressor (55, 61).
    [4" id="c-fr-0004]
    4. Reverse installation (30, 40, 50, 60) according to one of claims 1 to 3, which comprises a clutch between the gas regulator (41,51,61) and the generator (42, 52, 62) .
    [5" id="c-fr-0005]
    5. Reverse installation (30, 40, 50, 60) according to one of claims 1 to 4, which comprises a clutch between the engine (46, 52, 62) of the compressor and the compressor (21,45, 55, 61).
    [6" id="c-fr-0006]
    6. Reverse installation (30, 40, 50, 60) according to one of claims 1 to 5, which comprises a means for venting the gas pressure regulator (41,51,61).
    [7" id="c-fr-0007]
    7. countdown installation (30, 40, 50, 60) according to one of claims 1 to 6, which 5 comprises a means for venting the compressor (21,45, 55, 61).
    [8" id="c-fr-0008]
    8. Reverse installation (30, 40, 50, 60) according to one of claims 1 to 7, which further comprises a gas pressure regulator (12) without energy recovery in parallel with the gas pressure regulator (41,51 , 61) driving the generator.
    [9" id="c-fr-0009]
    9. Reverse installation (30, 40, 50, 60) according to one of claims 1 to 8, in which the compressor (21,45, 55, 61) is a piston and valve compressor.
    [10" id="c-fr-0010]
    10. Reverse installation (30, 40, 50, 60) according to one of claims 1 to 8, in which the compressor (21, 45, 55, 61) is a centrifugal compressor with variable blades.
    1/8
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    FR2976136A1|2012-12-07|Rankine cycle system for producing electricity for non-infinite type local electricity network utilized to supply electric power to load, has controller controlling closing of switch to trigger supply according to information characteristic
    FR2910561A1|2008-06-27|FUEL SUPPLY SYSTEM OF AN INTERNAL COMBUSTION ENGINE
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    EP1240936A1|2002-09-18|Compressed air drier with cooling cycle and method for using such a drier
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    BE459800A|
    同族专利:
    公开号 | 公开日
    US20210254790A1|2021-08-19|
    WO2019239083A1|2019-12-19|
    CA3103753A1|2019-12-19|
    EP3807570A1|2021-04-21|
    FR3082597B1|2020-11-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102009038128A1|2009-08-11|2011-02-24|EnBW Energie Baden-Württemberg AG|Method for supplying biogas into gas distribution system, involves temporarily recompressing gas from medium pressure distribution network into upstream high pressure network during low gas consumption by gas consumers|
    FR3001523A1|2013-01-31|2014-08-01|Air Liquide|Method for management and control of supply of biogas to natural gas distribution network, involves managing and controlling biogas available for supply to injection station, so as to restore pressure of gas flowing in network|
    FR3007417A1|2013-06-20|2014-12-26|Air Liquide|METHOD FOR PRODUCING BIOMETHANE INCLUDING THE CONTROL AND ADJUSTMENT OF THE BIOGAS FLOW SUPPLYING THE PURIFICATION STEP ACCORDING TO THE QUANTITY OF BIOGAS AVAILABLE UPSTREAM|
    FR3035598A1|2015-04-29|2016-11-04|Endel|METHOD AND SYSTEM FOR DIRECT INJECTION OF BIOMETHANE FROM BIOGAS WITHIN A DISTRIBUTION NETWORK.|
    US7624770B2|2004-09-23|2009-12-01|The Boc Group, Inc.|Intelligent compressor strategy to support hydrogen fueling|
    US9404623B2|2014-02-25|2016-08-02|General Electric Company|Modular compressed natural gas system for use at a wellsite|FR3105343B1|2019-12-20|2021-11-19|Grtgaz|GAS COMPRESSION DEVICE|
    FR3105344B1|2019-12-20|2021-11-19|Grtgaz|GAS CIRCULATION REGULATION STATION BETWEEN TWO GAS NETWORKS|
    FR3106631B1|2020-01-28|2022-01-07|Grtgaz|GAS LEAK PREVENTION DEVICE FOR COMPRESSOR|
    FR3106650B1|2020-01-28|2021-12-31|Grtgaz|DECOMPRESSION DEVICE FOR A GAS NETWORK SECTION|
    法律状态:
    2019-05-21| PLFP| Fee payment|Year of fee payment: 2 |
    2019-12-20| PLSC| Search report ready|Effective date: 20191220 |
    2020-05-20| PLFP| Fee payment|Year of fee payment: 3 |
    2021-05-19| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1855299A|FR3082597B1|2018-06-15|2018-06-15|INSTALLATION OF ENERGY OPTIMIZED RETURNS|
    FR1855299|2018-06-15|FR1855299A| FR3082597B1|2018-06-15|2018-06-15|INSTALLATION OF ENERGY OPTIMIZED RETURNS|
    FR1857112A| FR3082600A1|2018-06-15|2018-07-30|CONNECTED BACKHOE INSTALLATION AND METHOD OF OPERATING SUCH AN INSTALLATION|
    US17/252,075| US20210254790A1|2018-06-15|2019-06-17|Energy-optimized backfeeding installation|
    EP19746119.7A| EP3807570A1|2018-06-15|2019-06-17|Energy-optimized backfeeding installation|
    CA3103753A| CA3103753A1|2018-06-15|2019-06-17|Energy-optimized backfeeding installation|
    PCT/FR2019/051473| WO2019239083A1|2018-06-15|2019-06-17|Energy-optimized backfeeding installation|
    CA3106946A| CA3106946A1|2018-06-15|2019-07-30|Connected backfeeding installation and method for operating such an installation|
    US17/261,102| US20210285605A1|2018-06-15|2019-07-30|Connected backfeeding installation and method for operating such an installation|
    PCT/IB2019/020026| WO2020026035A1|2018-06-15|2019-07-30|Connected backfeeding installation and method for operating such an installation|
    EP19759729.7A| EP3830469A1|2018-06-15|2019-07-30|Connected backfeeding installation and method for operating such an installation|
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