Compressor or pump provided with a control for the control of the operating range and method for the

专利摘要:
Compressor or pump, including at least one compressor or pump element (2) for supplying fluid under pressure; a motor (5) coupled to the element (2), where the compressor or pump (1) is designed to operate within a certain nominal operating range defined by the nominal control ranges between maximum and minimum allowed values of the control parameters of the compressor or pump (1) in nominal operating conditions and where the compressor or pump is provided with a control (8) with a basic control (8a) for the nominal control of one or more control parameters (Q, pw) in function of a desired set operating point (14) , characterized in that the control (8) is further provided with an additional control function (8b) for statically or dynamically adjusting the operating range limit values, whereby the nominal control range (11, 17) of one or more control parameters is adapted in function of the actual operating conditions of the compressor or pump (1) that deviate from the nominal operating conditions.
公开号:BE1026539B1
申请号:E20195556
申请日:2019-08-27
公开日:2020-09-14
发明作者:Antoon STUER；Ivo DANIËLS
申请人:Atlas Copco Airpower Nv；
IPC主号:

专利说明:

; BE2019 / 5556
À Compressor or pump equipped with a control for: regulation of the operating range and working method for the | The invention relates to a compressor or pump 9 provided with an additional control for the static or | dynamic control of the operating range limits in functions from one or more operating parameters.
In what follows, the invention is mainly described for compressors, but quite analogously, the invention also relates to pumps, in which a pump serves to pressurize a liquid or fluid mixture, just as a compressor serves to compress a gas or liquid. gas mixture. Such compressors and pumps are sufficiently known to be composed of at least one compressor or pump element for supplying a fluid under pressure to a network of consumers of such pressurized fluid and a motor coupled to the compressor or pump element.
The term operating parameter here refers to any parameter of the machine and its environment that affects the operation of the compressor or pump. Examples of such operating parameters for a compressor are the altitude at which the compressor is used, the outside temperature, the pollution of the air filters, the load on the motor, the power surplus of the available power of the motor in relation to the required power, and so on: Typically compressors are equipped with a basic control 9 in which the flow is recalculated to maintain a set 9 desired working pressure or in which the working pressure is regulated to maintain a set desired flow. 9 Flow and working pressure are referred to in the following as the main control parameters.
The working pressure is easy to measure and therefore to regulate.
However, the flow rate is more difficult to measure and therefore also to regulate it directly. For the regulation of the flow rate, two underlying control parameters are therefore always used that are easier to measure and regulate, which together determine the flow rate, namely: = on the one hand, the speed; and, on the other hand, the inlet pressure at the inlet of the Compressor GE is the control pressure with which certain auxiliary functions in the compressor are controlled such as lubrication, opening of the inlet valve, and the like, The main control parameters and the underlying control parameters are collectively called the control parameters, each with a certain control range between a minimum and maximum value of the respective control parameter,
The operating range is determined by the minimum and maximum limits of all control parameters, more specifically {the nominal operating range is determined by the nominal | control range of the control parameters at nominal 9 5 conditions that are determined by well-defined selected 9 nominal reference values of the operating parameters such as 3 height, cooling and other influences. 9 An operating point is a collection of specific values 9 10 of the control parameters within the operating range, A COMpPTESSOr or ponp is in fact dimensioned and composed by design to be able to operate within a certain nominal operating range that is thus determined by maximum and minimum permitted values of the control parameters of the compressor or pump. These maximum and minimum values are determined by the operating parameters of the motor, on the one hand, and of the compressor or pump element on the other.
Usually, such a compressor or pump is provided with a basic control for the regulation of San or more control parameters in function of a desired operating point of the compressor within a nominal operating range of the compressor set by design. in practice, such basic control is performed as a dynamic control of a chosen control parameter to keep another control parameter constant in the nominal operating range,
A widely used basic control consists of adjusting the operating pressure of the | compressor element, or rather to keep the pressure in the consumer network as constant as possible by: 5 responding to the variable flow rate of the compressor or pump, | regardless of consumption in the consumer network. In practice 9 the regulation of the flow is done on the basis of two {underlying control parameters speed and inlet pressure or 9 regulation pressure. 9 10 If, for example, in the case of a compressed air network, the consumption of compressed air increases, this will tend to cause the pressure in the consumer network to drop, but thanks to the basic control, the pressure will be maintained at the required level by the supplied compressed air flow. by increasing the speed of the Compressor element and / or increasing the inlet pressure and / or decreasing the control pressure within the limits of the nominally set operating range.
If, on the other hand, the consumption of compressed air decreases, there will be a similar tendency for the pressure in the consumer network to rise, but thanks to the basic control, the pressure will be maintained by reducing the compressed air flow delivered by the speed of the compressor element. and / or decrease the inlet pressure and / or increase the control pressure, within the limits of the nominally set operating range of minimum and maximum limits of the control parameters.
In nominal conditions, the control range of each {control parameter such as operating pressure, dehit, speed, inlet pressure and control pressure will be limited between 9 a minimum and a maximum value, 9 The minimum inlet pressure is determined, for example, by the 9 design of the pump or compressor and its inlet valve, to | cavitation or high negative forces, The minimum speed is determined, for example, by the torque curve of the motor, by the critical speed of the coupling between motor and compressor or mounting element and the minimum speed required to start and prevent the motor The minimum operating pressure is for example determined by the minimum pressure required for certain auxiliary functions in the compressor, such as lubrication, valve control, ...
The maximum inlet pressure is determined by the atmospheric air pressure and the contamination of the inlet filters. The maximum speed is determined by the maximum available power of the motor, which must be at least equal to the maximum absorbed power of the compressor or pump element at the imposed operating pressure. The higher the set working pressure, the lower the speed, The maximum working pressure is determined by the maximum pressure that the components of the compressor can withstand,
€ | Due to the uncertainties that exist regarding the | Accuracy of the power and torque curves available 9 for the motor and for the compressor or pumping element: in practice, 9 3 is usually chosen in design for a power surplus of the motor, where F is the power of the motor typically 3 to 8% is greater than 9 the capacity of the compressor or pump element at a 9 nominal operating point.
At design, the nominal operating parameters are chosen such as atmospheric conditions (atmospheric pressure and temperature, sea level, humidity, and certain conditions of available cooling capacity for cooling the motor and / or the compressor or pump element and the condition of the motor and / or of the compressor or pump element (new condition, clean filters, ...).
In practice, the operating parameters may of course deviate from these nominal operating conditions chosen in the design, as a result of which the aforementioned power surplus may decrease or even become negative, causing the compressor to stop. maximum speed or the compressor is difficult or impossible to start at the minimum speed, which can lead to frustration for the user who does not always realize what is going on and who often experiences such situations when an unwanted breakdown occurs. For example, atmospheric conditions that deviate significantly from the nominal operating parameters, such as at high altitudes or extreme cold or heat, can have a detrimental influence on
; the power surplus of the motor, which in that case can even lead to a power shortage or to unauthorized rapid and too radical heating of the compressor or pump, with possible damage, to | 5 even accidental engine shutdown or DOD. 9 Such extreme situations can especially occur with: mobile compressors that must be able to operate in different operating conditions 9 with different operating parameters # Là, although different operating conditions may also arise in fixed installations, which may lead to lower performance (power, torque) of the motor and an inefficient operation of the compressor or pump element.
For example, when a mobile compressor with a Verorandings engine is deployed at higher altitudes with an icy air, the performance of the engine and compressor will change greatly, typically the engine power will decrease at maximum speed while being absorbed by the compressor. power will also decrease, but not necessarily in the same proportion, as a result of which the power surplus will be lower and start-up problems may arise.The known compressors and pumps with their basic controls are not equipped to respond to such deviating situations, with all the adverse consequences of serve for the user, |
In an analogous way, it can happen that the actual working conditions are more favorable than the nominal working conditions imposed in the design, in which case the power excess of the motor may increase: = With the classic basic control, this power difference | However, it cannot be usefully used to allow, for example, a greater maximum flow rate or a greater operating pressure. The object of the present invention is to provide a solution to one or more of the aforementioned and other disadvantages. compressor or Dorp, comprising at least one compressor or pump element for supplying a fluid under pressure to a network of consumers of such pressurized fluid; a motor coupled to the compressor or pump element, where the compressor or pump is designed to operate within a certain nominal operating range determined by the nominal control ranges between max and min allowable values of the control parameters, of the compressor or pump in nominal operating conditions and wherein the compressor or pump is provided with a control with a basic control for the nominal control of one or more regol parameters as a function of a desired set operating point of the compressor within the nominal operating range of the compressor or Comp set by design, characterized in that the The control is further provided with an additional control function for statically or dynamically adjusting the limit values of the operating range, whereby the nominal control range of one or more control parameters is adjusted in function of the actual operating conditions {of the COMDressor that deviate from the nominal operating conditions, 9 The invention offers the advantage that when the actual 9 operating conditions are less favorable than the standard 9 operating conditions at design, the control range of the 9 compressor or pump can be adjusted in situ, for example by limiting the maximum speed and / or increasing the minimum speed, in the In the aforementioned case of a compressor with a combustion engine, the starting problems at high altitudes can be solved or reduced by increasing the minimum speed of the speed control range, and the problem of insufficient power surplus can be solved by the maximum speed and / or or decrease the maximum working pressure.
In this way, the compressor can continue to function, even if it is with reduced crestations such as with a smaller delivered flow or with a lower operating pressure.
conversely, if the operating conditions are more favorable than those laid down in the design, then thanks to the invention the control range can be increased, for example by increasing the maximum speed, so that the greater 39 power surplus that can be achieved in this way can also be used usefully to, for example, a larger
{to achieve a flow rate or a higher operating pressure, depending on the | setting of the control, 9 The extra control function should preferably be designed in such a way | 5 are the control range of at least one control parameter | is preferred by lowering the maximum limit and / or 9 by increasing the minimum limit of the nominsai # control range of this control parameter if the actual 9 operating conditions deviate from the nominal 9 10 operating conditions such that without this additional recel function: | = the compressor or pump would shut down due to a lack of power from the motor to drive the compressor or pore element or could not be started; - cf the compressor or pump could fail outside its permitted operating range. in practice, the basic control is usually based DD regulating the flow to keep the working pressure constant within a control range limited by a minimum and maximum Flow and / or based on the control of the working pressure to keep the flow constant within a control range, limited by a minimum and maximum operating pressure to keep the flow constant,
According to a special aspect, the control of the compressor or pump can be provided with setting means for setting or measuring at least one operating parameter which is not a control parameter, for example the height from | sea level, and that the additional control function is such that the control range of one or more control parameters, such as the flow rate, the speed, the inlet pressure, the control pressure and / or {the working pressure, is statically or dynamically adjusted: in | function of the set or measured value of this 9 operating parameter if it deviates from the nominal 9 5 operating conditions, this to prevent: - the compressor or pump would stop due to a lack of power from the motor to 9 the compressor or pump element to power or not | be started; 7 whether the compressor or comp could operate outside its permitted operating range. The control can thus take into account the influence of working at a greater height, whereby the height can be set, for example, via an adjustment knob, keypad, touch screen or the like. measured, for example by in-situ measurement of the atmospheric pressure, In addition to the nigh measurement, many other operating parameters that can influence the power surplus or a combination thereof can be monitored by the control, such as: - other atmospheric parameters such as temperature, humidity or similar; - the available cooling capacity for cooling the Compressor or DOM; - the temperature of the compressed gas: - the temperature of the engine cooling; - the temperature of the engine turbo in the case of a combustion engine equipped with a turbo;
: 12> the contamination of the engine air filters and of: the comopressor element :; {- the available energy source or sources for the | driving the compressor or pump; | 5 = the available capacity of this energy source or 9 energy streams: 9 = the load on the motor: #> the power surplus.
The list enumerated above is not exhaustive.
The height is an operating parsmeter that can change on mobile compressors or pumps when the machine is moved from one workshop to another.
During operation the compressor or pump does not change.
The influence of the height on the operating area can therefore be determined at cpostart of the machine.
The minimum and maximum values of the control range no longer need to be adjusted for height during operation.
We say that altitude is a static operating parameter. There are also operating parameters that can change during operation, such as cooling or loading the motor. The impact of these parameters on the operating range must therefore be adjusted during operation.
The minimum and maximum values of one or more control parameters must therefore be continuously adapted.
We say these are dynamic operating parameters.
For any static operating parameter it is preferable that the influence of this parameter on the operation of the compressor or pump is known in advance.
for example goor calculation or experimentally determined, and that this influence in the form of a Label or curve or of | a permissible operating range has been entered into the control, | 5 from which, depending on the set or measured value, the | Control via the additional control function can derive the adjustment of the control range to be applied, 9 In the case of dynamic operating parameters, the 9 10 additional control function is programmed in such a way that it has the set nominal control range of one or more control parameters such as the flow rate, the speed, the negative pressure in the inlet, the control pressure or the working pressure can adjust according to the actual value of these dynamic operating parameters, such as the cooling capacity,
Preferably, if the control is provided with an additional control circuit for each dynamic operating parameter,
typically a PID, which will dynamically adjust the control range of one or more control parameters depending on the deviation from the desired value of the operating parameter,
25% Modern compressors can be Equipped with an electronic basic control that offers the possibility to determine or measure the real power surplus of the engine in situ,
An advantage of the direct determination of the power surplus is that it means that not all dynamic operating parameters need to be separately monitored in order to know the Œinviced on the power surplus and that it also takes into account the influence of 3 certain parameters that are difficult or impossible to determine 9 5 such as the wear of the compressor or pump, the use 9 of a fuel of lower quality, the filling of 9 air filters and / or fuel filters, the clogging of the inlet and exhaust and the like, 9 10 In this case, the power in itself can be seen as a global dynamic operating parameter with which the additional control function can be controlled.
If the actual LS power surplus threatens to fall below a set value or to become negative, the additional control function will preferably lower the maximum towers of the controllable flow and / or the controllable operating pressure. When at a low flow this power surplus threatens to become smaller than a set value, the additional control function will preferably increase the minimum limit of the control range of the controllable flow and / or decrease the mazimum limit of the control range of the operating pressure. The invention is especially useful. for mobile compressors or pumps as they have to be used in widely varying conditions, By mobile is meant a compressor or pump that is intended to be mobile, for example from one BE2019 / 5556ene to the other, even if there are means of transport: or takei means needed.
In short, a compressor that {is not intended to be used stationary at a fixed location | The invention also relates to a method for | controlling a compressor or ponp, containing at least 9 den compressor or spark element for delivery under pressure from an EÊluidum to a network of consumers of such | 10 fluid under pressure and a motor, where the compressor or Dump is designed to operate Le within a certain nominal operating range determined by the max and min allowed values of the control parameters of the comoressor or pump, where the compressor or ponp is equipped with a control for the nominal regulation of one or more regulation parameters within a nominally set regulation range and this in function of a desired set regulation parameter such as flow or operating pressure or a desired set operating point of the compressor or pump within the nominal operating range of the compressor or pump, characterized in that when the actual operating conditions deviate from the nominal operating conditions or fall outside the nominal operating range of the compressor or pump, an additional control step is applied to statically or dynamically adjust the nominal control range of one or more control parameters in function of the actual working condition the compressor or pump. 32 With the insight to better demonstrate the characteristics of the invention, are hereinafter, as an example, without any limitation
; BE2019 / 5556 16 character, some preferred embodiments and users described of a compressor according to the invention and the method used therein, with | reference to the accompanying drawings, in which: | Figure 1A schematically represents a compressor according to the invention with a control in function of a static operating parameter; | figure 1B shows an alternative embodiment of the compressor of figure 12; Figures 2 and 3 represent two graphs on a larger scale, which in Figure 1 are designated F2 and F2 respectively: Figure 4 shows an operating diagram of a compressor according to the invention; figure 5 shows an alternative embodiment of a compressor according to the invention, in this case for a control in function of a dynamic operating parameter,
Figure 1A, by way of example, pays off a mobile compressor 1 according to the invention, comprising at least one compression element! Z for compressing and supplying gas to a network 3 of consumers 4 of compressed gas; a motor 5 coupled to the compressor element 2 and having a variable speed n.
The engine 5 is, for example, an internal combustion engine with a fuel reservoir 6 and an adjustable injection pump 7; with which the speed n of the motor 5 can be controlleda via a control 8 in order to be able to operate within a
| operating range imposed by design determined by the minimum and maximum limits of the control parameters such as flow rate Q and {operating pressure pw, at nominal operating conditions determined 9 by operating parameters such as temperature of the motor 5,: 5 temperature of the compressor element 2, temperature of F the compressed gas , ambient temperature and the like 9 more, The control 8 contains a basic control Ba which is configured to regulate a main control parameter such as the flow QQ, respectively the operating pressure pw, of the compressor or pump in function of a set desired pressure pwset or sen set desired flow rate Oset.
35 In the example of figure 1A, the flow rate Q is the main control parameter to which a constant set working pressure owset is anticipated and maintained, at least within certain limits of the minimum flow rate Qmin and maximum flow rate QCmax that are known and that are included in the basic control 8a. are entered as a function of the desired working pressure pwset to be obtained, for example in the form of a graph 9 as shown in figure 2.
The desired operating pressure pwset can for instance be set 2) by the user via an adjusting knob 10. The flow rate Q to be set is then realized by controlling one or more underlying control parameters, such as speed n and inlet pressure pi or control pressure pr.
| The basic control 823 is realized, for example, by a control in which the operating pressure pw is measured, for example, by means of a pressure sensor 18 or the like, and wherein | the measured operating pressure pw is compared with the set: 3 pressure pwset and from this the desired flow rate Oset vis a # regulator Q-FID is determined, from which the desired speed nset via a first 9 algorithm Q / n and via a second 9 algorithm O / pi, pr a desired inlet pressure piset or a desired control pressure prset can be determined.
id On the basis of the desired speed nset and the desired values of inlet pressure or control pressure, the speed of the motor 5 is then controlled via a control n-PID which intervenes, for example, on the injection pump 7 and the inlet pressure pi or the control pressure pr are controlled by means of a control pi, pr-PID which intervenes, for example, on the position of the inlet valve 195 via an actuator 20 of the inlet valves.
The basic control & will thus increase or decrease the flow © Lot when the measured working pressure pw becomes equal to the set working pressure pwset, at least insofar as this is possible within the permitted control range 11 of the flow rate Q or of the speed n.
This control range 11 is represented by the graph 9 of figure 2, in which Omin and Omax can be read as a function of the set point pwset of the desired working pressure pw, where, for example, for a desired working pressure pwset a | control range 11 can be derived as the difference between the curve {max and the curve Omin within which the flow 9 can be regulated 9, 9 The curve Qmax is, for example, determined by the fact that | 3 at Gmax, the stored by the compressor element 2 | power at the set operating pressure pwset below the maximum | power that can be supplied by the motor 5, in particular the desired power surplus, typically 3 to 88%. 9 10 The graph 9 has been drawn up at the design starting from the 9 theoretical curves of the motor 5 and of the compressor element 2 in nominal operating conditions, such as at a height at sea level, in addition to the basic control 8a, the control 8 is further provided with an additional control function. 8b according to the invention for performing additional control steps. when the compressor l is operated at a higher altitude h above sea level where normally a lower ambient pressure and temperature prevails, this has the effect that the active power of the engine 5 will drop at this altitude, just as it is through the compressor element 2 absorbed capital will decrease, but not necessarily to the same extent, as a result of which the capital surplus will ultimately decrease or even become negative.
This can then result in the motor 5 stopping when reaching the maximum speed nmax as a result of reaching the maximum flow rate Qmax of the graph 3 at sea level HO and being difficult or unable to start.
= Q the compressor 1 at the minimum speed nmin as a result of reaching the minimum flow rate Omin of the graph | 9. To prevent this, according to the invention an additional control function 8b is integrated in the control 8 which will adjust the control range 11 of the graph 3 by | reduction of the maximum flow rate (max and / or increasing 9 of the minimum flow rate Qmin, whereby nmax or mmin mea 9 10 are adjusted.
It is also possible not to intervene: cp the flow limits 0, but alternatively directly on the control range of the tcer speed n, this DD based on the conversion of the flow O to the speed Nn for a given compressor or pump,
For example, the additional control function Bb uses a graph 12 as shown in Figure 3, which gives a correction factor IQ: by which Qmax, respectively Gain, of the graph of Figure 9 must be multiplied in order to apply the maximum and minimum to the height h flow rate at a desired operating pressure pwset can be derived as shown in dashed line in graph 9 of figure 2. Graph 12 of figure 3 shows a correction factor fQmin to be applied for the minimum flow rate drin that is greater than 1 for altitudes h above sea level hÙ and which increases with the height and lapel an applicable correction factor fQmax which is less than 1 and which decreases with the height h,
| BE2019 / 5556 21 Theoretically, the curves fümax and fOmin can be | continued for altitudes below sea level as in | is shown in dashed lines in graph 12 of figure 3, in which 9 the flow rate control range 11 can be made theoretically larger than at sea level hü. 3 The height h at which the compressor 1 is deployed can 9 be set, for example, by the user via a | setting knob 13 or other means to be able to set the height h. Alternatively, the height can be measured or derived from the increase in the atmospheric pressure. The graph 12 can be calculated or determined experimentally in advance when the compressor 1 is developed. instead of a continuous curve as in graph 12, a table can be used with discrete values of the correction factor, corresponding to discrete values of the height, for example each time with a difference in height of 100 meters.
In place of the height, other static operating parameters can also be set or measured which can have an influence on the performance of the motor 5 and of the compressor element 2, if deviating from the nominal operating conditions.
à / BE2019 / 5556 22 For each static operating parameter and for each {control parameter, a graph or table can be used for the | correction factor £ can be entered in control 8. | In the embodiment of figure 1B, instead of adjusting the F control range of the flow rate Q, the control range of the underlying control parameters | adjusted as for the speed n and for the inlet pressure pi or control pressure pr, of which the nominal control ranges between a minimum and maximum value are entered in the basic control Sa in the form of graphs or tables 9 'and 9 ”in function of the operating pressure, analogous to the flow rate control range graph 9 in the embodiment of Figure 1A,
in the embodiment of figure 18, the extra control function 8b contains a correction curve 12 'for adapting the control range of the speed n as a function of the high h and, analogously, also a correction curve 12 ”for adapting the control range of the inlet pressure pi or of the control pressure pr to respond directly to the underlying control parameter n and pi or pr, Graphs 12 'and 12 ”contain a correction factor fn for the control range of speed in the graph 9' and a correction factor fp for the control range of the inlet pressure pi or of the control pressure pr in the graph 9 ”and this in function of the height, In place of a control of the flow rate Q, by means of the speed n and inlet pressure pi or control pressure pr to keep the operating pressure pw constant, a control can also be analogously 9 are applied whereby the operating pressure pw is regulated in order to obtain a constant speed n or flow rate ©. In that case, the correction factor f can be applied to the | 5 maximum pressure pmax and the minimum pressure pmin which can be 9 changed in operating conditions other than | design. 9 The control can also include both controls, leaving the choice to the user which of the two controls, flow rate © or operating pressure pw, he wishes to use, in modern compressors 1 with an electronic control even a desired operating point 14 can be set as shown in graph 15 of [Figure 4, which operating point 14 is defined by a desired flow rate Oset and a desired operating pressure pwset in nominal conditions he design, for example at sea level H6.
At sea level hO, when controlled by means of the basic control 8a alone, in other words without additional control function 8b, the operating point 14 will follow the curve 16 shown in bold in Figure 4 and this within an imposed nominal control range 11 of the flow rate Q limited by Qmax and Qmin. The operating point can be shifted by the user by changing the desired operating pressure pwset within an imposed nominal control range 17 of the operating pressure pw limited by pwmaz and pwmin.
| In that case, the additional control function 8b will, when using the compressor at higher altitudes, set this limit value Qmin, # Gmax of the control range 11 and pwmin, pwmax of the | adjust control range 17 as shown by arrows | 3 8 in Figure 4, Dsardcor will be the scope and thus the | xeure of the desired operating point. 9 In the variant embodiment of a compressor 1 according to # figure 5, the control range of the flow rate © is dynamically adjusted in function of a dynamic operating parameter that can change continuously and for which no predefined correction curve can be applied, as for example in the case of the high, is In the case of [figure 5, by way of example a dynamic control is applied in function of the power surplus AP as operating parameter, walk power surplus AP the difference is Loops the available power of the motor 5 and the required by the compressor element 2 power and can be determined on the basis of means 21, the signal of which is fed back to the additional control function Sb.
In the additional control function 8b a desired value APset of the power surplus AP is set, for example an APset of 2%. The additional control function 85 will then determine the actual power surplus AP coming from the means 21 | compare with the desired value APset and if this value deviates from the desired value, the extra
| control function 85 adjust the limit values of one or more control parameters to arrive at the desired power surplus. | 3 In this case the extra control function 8b will use | an arrangement. typical PID, to keep the power surplus at a certain level by changing the F limits of the operating range of the compressor, 9 for example by adjusting the control range 11 of the | ÎD flow rate.
The present invention is by no means limited to the exemplary embodiments and shown in the figures, but a compressor or pump and method according to the invention can be used in all shapes and sizes without departing from the scope of the invention,

权利要求:
Claims (1)
[1]
Conclusions. L.- Compressor or pump, comprising at least one compressor or pump element (2) for supplying a fluid under pressure to a network {3} of consumers (4) of such | fluid under pressure; a motor (53) coupled to the compressor or pump element 9 {2}, where the compressor or pump 9 (1) is designed to operate Le within a certain nominal | 12 operating range determined by the 9 nominal control ranges between maximum and minimum allowed values # of the control parameters of the compressor or pump (1) in nominal operating conditions and where the compressor or pump is provided with a control (8) with a basic control {Ba} for the nominal control of one or more control parameters (0, pw} in {function of a desired set operating point {14} of the compressor {1} within the nominally set operating range of the compressor or pump (1) by design, characterized in that the control {6} is further provided with an additional control function (8b ) for statically or dynamically adapting the limits of the operating range, whereby the nominal control range (il, 17} of one or more control parameters is adjusted in function of the actual operating conditions v of the compressor or pong (1) that deviate from the rated operating conditions,
Compressor or pump according to claim 1, characterized in that the nominal power of the motor (5) is greater than the nominal power of the compressor or pump element (2) under nominal design conditions,
| 3. Compressor or pump according to claim 2, characterized in that the pre-defined additional control function (85) is such | is that the control range il, 17} of at least one | control parameter is reduced by lowering the 3 mazimum limit and / or by increasing the minimum limit of | net nominal control range (11, 17} of this control parameter if the actual operating conditions deviate from the nominal operating conditions 9 such that without this F additional control function {8b): 9 18 - the compressor or pump {1} would stop due to a | lack of power of the motor (53 to be able to drive the compressor or pump element (2) or could not be started; = whether the compressor or pump (1) could operate outside its permitted operating range,
Compressor or pump according to claim 3, characterized in that the compressor or pump is provided with an adjustable variable speed (n} or flow rate and / or with an adjustable operating pressure {pw} and that the basic control (Ba) is provided for regulation. of the flow (0) by controlling one or more underlying regulation parameters such as the speed {n}, the inlet pressure {pi}, the regulation pressure {DE}, within a set nominal control range {11 23 limited by a minimum and a maximum nominal flow rate {Quin and Omax) or minimum and maximum speed (nmin and nmax} or a minimum and maximum inlet pressure (pimin and pimax) ci a minimum and maximum control pressure (prmin and prmaz) and / c for regulating the working pressure (pw) inside one set; nominal control range (17) limited by a set nominal minimum and maximum operating pressure (ewmin and pwmax} and that the additional control function (8b) is provided for regulating one or more of the respective control ranges. 3>. ”Compressor cf ponp according to claim 4 characterized in that the control (8) is provided with means to determine the power surplus of the available power of the motor (5) in relation to the absorbed power of the compressor or pump element (2) in actual operating conditions and that the additional control function (8b) 18 is such that it has just set the nominal operating range / control range (11, 17) of the flow (03 by means of one or more underlying control parameters such as net speed ({n}, inlet pressure {pi} , regulation pressure (pr) and / or of the working pressure {pw} can adjust depending on the capital surplus.
Compressor or pump according to claim 5, characterized in that if at a high speed {n} or flow rate (Q) this power surplus threatens to become smaller than a set value, the maximum limit {nmax or Omax, pwmax}) of the adjustable flow rate and / or the controllable operating pressure (pw) is reduced.
Compressor or pump according to claim 5 or 6, characterized in that if at a low speed (n} or flow rate {0} this power surplus threatens to become smaller than a set value, the minimum limit (nmin or Qmin) of the control range (11 ) of the adjustable speed (n) or of the adjustable flow (0) is increased and / or the maximum limit; {pwvmax}) of the control range {17} of the operating pressure (pw) is reduced.
Compressor or pump according to any one of the preceding claims, characterized in that the control (8) is provided with setting means (133 for setting or measuring at least one operating parameter which is not a control parameter and that the additional control function (830) ) is such that the control range (il, 17} of one or more 9 control parameters is statically or dynamically adjusted: in 9 E Function of the set or measured value of this operating parameter if it deviates from the nominal operating conditions, in order to prevent: - the compressor or pump {1} would stop due to a lack of power from the motor {5} to be able to drive the compressor or pump element (23 or could not be cogestarted: - Whether the compressor or pomo (1) is allowed outside scope.
Compressor or pump according to claim 8, characterized in that the said adjustable or measured operating parameter is a parameter or is a combination of parameters from the following non-limitative list: - the atmospheric conditions such as altitude (hj, atmospheric pressure, atmospheric temperature, the atmospheric humidity or the like; - the available cooling capacity for cooling the compressor or pump (1}; - the temperature of the compressed gas; - the temperature of the cooling of the engine {53:
: BE2019 / 5556 9 30 9 = the temperature of the turbo of the engine {5} in the case of a combustion engine equipped with a # turbo: = the available energy source or sources for driving the compressor or pump (13: | = the available capacity of this energy source or 9 energy sources; F = the load on the engine (5).
Le 19 Compressor or pump according to claim & or 9, characterized in that the control (8) contains for each static operating parameter a table or graph {12} from which, depending on the value of the operating parameter to be set or measured, the operating parameter additional control function {8b} to be applied adjustment of the control range (11, 17) can be derived.
Li.- Compressor or pump according to claim B or 9, characterized in that the Control (B} contains for each dynamic operating parameter the additional control function (85) and control loop, typically a PID, which, depending on the deviation from the desired value of the operating parsmeter will dynamically adapt the control range (11, 17) of one or more control parameters, i2.- Compressor or pump according to one of the preceding claims, characterized in that it is a mobile compressor or pump (1), 13, - Method for controlling a compressor or pump, containing at least one Compressor or pump element (23 for
| supplying a fluid under pressure to a network {3} of consumers (4} of such fluid under pressure and a motor | (5), the compressor or pong {1} being Designed to operate within a certain nominal operating range that 3 5 is determined by the maximum and minimum allowed values 9 of the control parameters of the compressor or pump {13}, 9 where the compressor or pump {1} is equipped with a 9 control (8) with a basic control (Ba) for the nominal | control of one or more control parameters (Q, pw) within a | 10 nominally set control range (11, 17) and this in function of a desired set control parameter (pwset, Qzet) or of a desired set operating point (14) of the compressor or pump {1} within the nominal operating range of the compressor or pump set by design (13, characterized in that when the actual operating conditions deviate from the nominal operating conditions or fall outside the nominal operating range of the compressor or pump (1), a ext The control step is applied to statically or dynamically adjust the nominal control range (11, 37) of one or more control parameters {Q, mn, Di, pr, ow} in function of the actual operating conditions of the compressor or pomo {31}. Method according to claim 13, characterized in that the method is applied to a compressor or pump {1} with a motor (5) whose nominal power is greater than the nominal power of the compressor or pump element (2) in nominal design conditions.
: 32
Method according to claim 14, characterized in that said additional control step consists of decreasing the # control range of at least one control parameter (0, n, pi, pr, | pw) by lowering the maximum limit and / or 9 3 by increasing from the minimum limit of the nominal # control range (11, 17} of this control parameter if the | actual operating conditions deviate from the 9 nominal operating conditions such that without this additional: control step: 9 18 - the compressor or pump {1} would shut down due to a 9 lack of power of the motor (53 to be able to drive the compressor or pump element (2) or could not be started up; - whether the compressor or pump {1} could operate outside its permitted operating range,
Method according to claim 15, characterized in that the method is applied to a compressor or pump {1} with a variable flow rate (0) and / or with an adjustable =. working pressure {pw}, whereby the basic control {Sa} is provided for respectively regulating the flow (03 or the working pressure {pw) by means of one or more underlying control parameters such as the speed {nis the inlet pressure (pi) in the inlet from the compressor or pump; the control pressure (pr) within a set nominal control range (11 limited by a minimum and a maximum nominal value of the flow (Gmin and QOmax) or of the speed {nmax an nmin! or of the inlet pressure (pimax and pimin} or of the control pressure (prmax and prmin} and / or for regulating the operating pressure (pw); within a set nominal control range (17) limited by a minimum and maximum pressure (pemin and pwmax) eni BE2019 / 5556 33 where with the extra control step one or more of the relevant control ranges (11, 17) are controlled. Method according to claim 16, characterized in that for the additional control step the power surplus of the 9 available power of the motor (5) with respect to the 9 absorbed power of the compressor or pump element (2) 9 is determined, whereby, depending on this power surplus, the set nominal control range (11) 9 10 of the flow (0Q) or the control range (17) of the operating pressure 9 (DW) is adjusted by means of one of the parts current control parameters {n, pi, pr).
Method according to claim 17, characterized in: that when at a high speed in} or flow rate (Q} this power surplus threatens to become smaller than a set value, the additional control step consists of setting the maximum limit {nmax, (max, pwnax) ) of the adjustable speed ín} or the adjustable flow rate {Q} and / or the adjustable operating pressure (pw), 19, - Method according to claim 17 or 18, characterized in that when at a low speed ín) or flow rate {2} this power surplus threatens to become smaller than a set value, the additional control step consists of adjusting the minimum limit {(nmin, Qmin) of the control range {11, 17) of the adjustable speed (n) or of the adjustable flow (0) and / or decrease the mazimum limit (pwmax} of the operating pressure control range {pw}.
{20.- Method according to any one of claims 13 to 19, {characterized in that it comprises a step in which at least 9 one operating parameter is monitored and that the additional | control step consists of changing the control range (11, 17) of one | 3 or more control parameters (0, n, pi, pr, pw} to be adjusted 9 depending on the value or condition of this monitored 9 operating parameter if it deviates from the nominal operating conditions, in order to prevent: = the compressor or pump (1) would stop due to a lack of power from the motor {53 to drive the compressor or pump element (2) or could not start up; - or the compressor or pump (1) could be outside its permitted operating range to operate,
21.7 Method according to claim 20, characterized in that the aforementioned monitored operating parameter or operating parameters is a parameter or is a combination of parameters from the following non-limitative list: - the atmospheric conditions such as high {h), atmospheric pressure, atmospheric temperature, atmospheric humidity or similar; - the available cell capacity for cooling the compressor or comp {1}; - the temperature of the compressed gas; - the temperature of the cooling of the engine (5): - the temperature of the turbo of the engine (5) in the case of a combustion engine equipped with a turbo; = the available energy source or energy sources for driving the compressor or pump {1};
BE2019 / 5556 35 - the available capacity of this energy source or | energy sources; The load of the motor (5), 9 5 22. - Method according to claim 20 or 21, characterized in that the additional control step for each static operating parameter 9 uses a table or graph 9 (12) from which, in function of the value or state of the monitored operating parameter the adjustment # 10 to be applied of the control range (11, 17) in the additional control step can be derived. 23, - Method according to claim 20 or 21, characterized in that the additional control step comprises for each dynamic operating parameter a control loop, typically a PID, which, depending on the deviation from the desired value of the operating parameter, adjusts the control range (11, 17). ) will dynamically adjust one or more control parameters,
2. Method according to any one of the preceding claims 13 to 23, characterized in that it is so fitted to a mobile compressor or pump {1},

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引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

US5410883A|1991-09-05|1995-05-02|Hitachi, Ltd.|Control system for plant|

---

US20100106458A1|2008-10-28|2010-04-29|Leu Ming C|Computer program and method for detecting and predicting valve failure in a reciprocating compressor|

---

WO2015066219A1|2013-10-29|2015-05-07|Eaton Corporation|Electronic control for a rotary fluid device|

---

EP3156651A1|2015-10-16|2017-04-19|Grundfos Management A/S|Pressure increasing device|

---

GB173520A|1920-12-30|1922-07-06|Benjamin Graemiger|Improvements relating to the regulation of compressors or pumps working in parallel|

---

GB2452287B|2007-08-29|2012-03-07|Gardner Denver Gmbh|Improvements in compressors control|

---

DE102011007279A1|2011-04-13|2012-10-18|Bosch Mahle Turbo Systems Gmbh & Co. Kg|Charging device and associated operating method|

---

DE102011050017A1|2011-04-29|2012-10-31|Allweiler Gmbh|Control means for driving a frequency converter and driving method|

---

EP2628918B1|2012-02-15|2020-04-22|Ford Global Technologies, LLC|Method for operating an internal combustion engine with a turbocharger arrangement and control unit for an engine with a turbocharger arrangement|

---

CN103807156A|2012-11-08|2014-05-21|何荣志|Circulating water energy-saving control operation system|

---

DE102014014451A1|2014-05-14|2015-11-19|Wabco Gmbh|Method for operating a compressed air system of a vehicle|

---

CN107208639B|2015-01-15|2019-07-23|阿特拉斯·科普柯空气动力股份有限公司|Controller and application thereof, vacuum pump and temperature control method with the controller|

---

US10350966B2|2015-08-11|2019-07-16|Ford Global Technologies, Llc|Dynamically controlled vehicle cooling and heating system operable in multi-compression cycles|

---

EP3239626A1|2016-04-27|2017-11-01|PLUM spólka z ograniczona odpowiedzialnoscia|Method for controlling heat pump operation|

---

CN106014947B|2016-06-29|2018-11-06|广东葆德科技有限公司|A kind of air compressor machine monitoring method and system based on Internet of Things|

---

法律状态:
2020-10-15| FG| Patent granted|Effective date: 20200914 |

优先权:

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申请号 | 申请日 | 专利标题

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BE20185604A|BE1026577B1|2018-08-29|2018-08-29|Compressor or pump provided with a control for the control of a control parameter and method for the control applied|

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