Compressed air system control method and device, electronic equipment and storage medium

Abstract

The invention discloses a control method and device of a compressed air system, electronic equipment and a storage medium. The method comprises the following steps: determining operation parameters of an air compressor according to at least one of first pressure at a mother pipe of the air delivery pipe network and flow of the air delivery pipe network, and attribute parameters of the air compressor in a compressed air system; and according to the first pressure, the second pressure of the gas transmission pipe network at the user tail end and the target pressure, the pressure adjusting value of the gas transmission pipe network is determined. According to the embodiment of the invention, the operation stability of the compressed air system can be improved, and the timeliness of the pressure control signal of the compressed air system can also be improved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a control method, device, electronic equipment and storage medium for a compressed air system. Background Art

[0002] In the battery production process, compressed air is usually required to perform tasks such as pneumatic conveying, maintenance, purging, and instrumentation. The compressed air required in the battery production process is provided by a compressed air system. In order to improve the quality of battery production, high requirements are usually placed on the stability and timeliness of the response of the compressed air system. In the actual operation of the compressed air system in the related technology, the air compressor of the compressed air system is prone to frequent start and shutdown when the load at the air end fluctuates greatly, and the pressure control signal at the air end has a lag, which will cause the stability and timeliness of the compressed air system to be poor. Summary of the invention

[0003] In view of the above problems, the present application provides a control method, device, electronic device and storage medium for a compressed air system, which can solve the technical problems of poor stability and timeliness of the compressed air system in the related art.

[0004] In a first aspect, the present application provides a method for controlling a compressed air system, comprising determining the operating parameters of the air compressor based on a first pressure at a main pipe of the gas pipeline network and at least one of the flow rates of the gas pipeline network, and property parameters of the air compressor in the compressed air system; and determining the pressure adjustment value of the gas pipeline network based on the first pressure, the second pressure of the gas pipeline network at the user end, and the target pressure.

[0005] In the technical solution of the embodiment of the present application, based on the first pressure at the main pipe of the gas pipeline network and at least one of the flow rates of the above-mentioned gas pipeline network, as well as the attribute parameters of the air compressor, not only can the operating parameters of the air compressor be accurately acquired, the phenomenon of frequent start and stop of the compressed air system during operation can be effectively alleviated, and the stability of the operation of the compressed air system can be improved. According to the above-mentioned first pressure, the second pressure of the above-mentioned gas pipeline network at the user end and the target pressure, not only can the pressure adjustment value of the gas pipeline network be determined timely and effectively, but also the timeliness of the pressure control signal of the compressed air system can be improved.

[0006] In some embodiments, the above-mentioned attribute parameters include the gas output of the above-mentioned air compressor, and the above-mentioned operating parameters include the number of air compressors that are turned on; the above-mentioned operation parameters of the air compressor are determined based on at least one of the first pressure of the main pipe of the gas pipeline network and the flow of the above-mentioned gas pipeline network, as well as the attribute parameters of the air compressor of the compressed air system, including: determining the number of air compressors that are turned on and match the above-mentioned maximum flow according to the maximum flow of the above-mentioned gas pipeline network and the gas output of each air compressor. In this embodiment, according to the maximum flow of the above-mentioned gas pipeline network and the gas output of each air compressor, the number of air compressors that are turned on and match the above-mentioned maximum flow can be accurately determined, so that it is possible to provide compressed air that matches the gas demand at the user end, reduce additional energy consumption, and improve energy utilization.

[0007] In some embodiments, the air compressors include centrifugal air compressors and variable frequency air compressors, and the number of air compressors to be turned on that matches the maximum flow is determined based on the maximum flow of the gas pipeline network and the gas production of each air compressor, including: calculating the sum of the gas production of centrifugal air compressors and variable frequency air compressors in different combinations; wherein the gas production of the centrifugal air compressors includes the minimum gas production and the regulated air intake; and determining the corresponding number of air compressors to be turned on when the sum of the gas production is greater than or equal to the maximum flow of the gas pipeline network as the number of air compressors to be turned on that matches the maximum flow.

[0008] In this embodiment, by summing up the gas production of different numbers of centrifugal air compressors and variable frequency air compressors, the number of air compressors to be turned on that matches the maximum flow of the gas pipeline network can be accurately determined, which can not only reduce the frequent start and stop of air compressors in the air compression system, but also improve the utilization rate of compressed air energy.

[0009] In some embodiments, the above-mentioned determination of the operating parameters of the air compressor based on the first pressure of the main pipe of the gas pipeline network and at least one of the flow rate of the gas pipeline network and the property parameters of the air compressor of the compressed air system also includes: determining the number of additional openings or closings of the air compressors based on the first pressure and the flow rate of the gas pipeline network and at least one of the gas output of the currently running air compressor and the opening of the air intake valve of each air compressor. In this embodiment, based on the first pressure and the flow rate of the gas pipeline network and at least one of the gas output of the currently running air compressor and the opening of the air intake valve of each air compressor, the number of additional openings or closings of the air compressors that match the user end can be accurately determined, thereby reducing the phenomenon of frequent start and stop of the air compressor and improving the utilization rate of compressed air energy.

[0010] In some embodiments, the number of additional air compressors to be opened is determined based on the first pressure and the flow rate of the gas pipeline network, as well as the gas output of the currently running air compressor, including: when the first pressure is less than the target pressure, the number of additional air compressors to be opened that matches the target pressure is determined; or when the current required flow rate of the gas pipeline network is greater than the system set flow rate, the number of additional air compressors to be opened that matches the current required flow rate is determined; wherein the system set flow rate is the maximum gas output output of the currently running air compressor. In this embodiment, when the first pressure at the main pipe of the gas pipeline network is less than the target pressure, or when the flow rate of the gas pipeline network is greater than the system set flow rate, the number of additional air compressors to be opened that matches the target pressure or target flow rate can be accurately determined, thereby reducing the phenomenon of frequent start and stop of the air compressor and improving the stability of the compressed air system operation.

[0011] In some embodiments, the number of air compressors to be closed is determined based on the first pressure and the flow rate of the gas pipeline network, as well as the gas output of the air compressors currently running in the compressed air system and the opening of the intake valves of each air compressor, including: when the first pressure is greater than or equal to the target pressure, the current required flow rate of the gas pipeline network is less than the system set flow rate, and the opening of the intake valves of each air compressor is less than a preset threshold, the number of air compressors to be closed that match the target pressure or target flow rate is determined; wherein the system set flow rate is the maximum gas output output by the currently running air compressor. In this embodiment, by determining that the first pressure is greater than or equal to the target pressure, the current required flow rate of the gas pipeline network is less than the system set flow rate, and the opening of the intake valves of each air compressor is less than a preset threshold, the number of air compressors to be opened that match the target pressure or target flow rate can be accurately determined, thereby reducing the phenomenon of frequent start and stop of air compressors and improving the stability of the operation of the compressed air system.

[0012] In some embodiments, the pressure adjustment value of the gas pipeline network is determined based on the first pressure and the second pressure of the gas pipeline network at the user end, including: determining the first pressure adjustment value of the gas pipeline network based on the first difference between the first pressure and the target pressure; determining the product of the preset pressure compensation coefficient and the first pressure adjustment value as the first pressure setting value; determining the second pressure setting value of the gas pipeline network based on the second difference between the second pressure and the first pressure setting value; determining the sum of the first pressure setting value and the second pressure setting value as the target pressure adjustment value of the gas pipeline network. In this embodiment, by timely feeding back the first pressure at the main pipe of the gas pipeline network and the second pressure of the gas pipeline network at the user end to the control terminal of the compressed air, and accurately determining the pressure adjustment value of the gas pipeline network based on the pressure compensation coefficient, the pressure adjustment value of the gas used at the user end can also be provided in a timely and effective manner, thereby improving the user experience.

[0013] In some embodiments, the method further includes: determining the adjustment parameters of the cooling fan according to the operation data of the cooling fan in the cooling tower of the compressed air system; and determining the adjustment parameters of the cooling water pump according to the operation data of the cooling water pump of the compressed air system. In this embodiment, based on controlling the operation data of the cooling fan and the cooling water pump, the adjustment parameters of the cooling fan and the cooling water pump can be accurately obtained, and the compressed air energy of the corresponding temperature can be accurately and effectively provided to the air compressor of the compressed air system.

[0014] In some embodiments, the operating data of the cooling fan includes the cooling water temperature and the operating frequency of the cooling fan. According to the operating data of the cooling fan in the cooling tower, the adjustment parameters of the cooling fan are determined, including: when the cooling water temperature in the cooling tower is greater than the set interval temperature and the operating frequency of the cooling fan is greater than the set frequency, the number of cooling fans turned on is increased; when the cooling water temperature in the cooling tower is less than or equal to the set interval temperature and the operating frequency of the cooling fan is less than or equal to the set frequency, the number of cooling fans turned on is reduced.

[0015] In some embodiments, the operating data of the cooling water pump includes the supply and return water pressure difference of the cooling water and the operating frequency of the cooling water pump. The operating parameters of the cooling water pump are determined based on the operating data of the cooling water pump, including: when the supply and return water pressure difference of the cooling water is less than the set supply and return water pressure difference, and the operating frequency of the cooling water pump is greater than the set frequency, increasing the number of cooling water pumps turned on; when the supply and return water pressure difference of the cooling water is greater than or equal to the set supply and return water pressure difference, the operating frequency of the cooling water pump is less than or equal to the set frequency, and the flow rate of each branch pipe at the user end is less than the maximum flow rate of the currently operating cooling water pump, reducing the number of cooling water pumps turned on.

[0016] In the second aspect, the present application implements a control device for a compressed air system, characterized in that it includes: a first determination unit, used to determine the operating parameters of the air compressor based on a first pressure at a main pipe of the gas pipeline network and at least one of the flow rates of the gas pipeline network, and property parameters of the air compressor in the compressed air system; a second determination unit, used to determine the pressure adjustment value of the gas pipeline network based on the first pressure, the second pressure of the gas pipeline network at the user end and the target pressure.

[0017] In a third aspect, an embodiment of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method described in the first aspect is implemented.

[0018] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described in the first aspect is implemented.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0021] Figure 1 A flow chart of a method for controlling a compressed air system provided in an embodiment of the present application;

[0022] Figure 2 A flow chart of another method for controlling a compressed air system provided in an embodiment of the present application;

[0023] Figure 3 A flow chart of another method for controlling a compressed air system provided in an embodiment of the present application;

[0024] Figure 4 A flow chart of another method for controlling a compressed air system provided in an embodiment of the present application;

[0025] Figure 5 A flow chart of another method for controlling a compressed air system provided in an embodiment of the present application;

[0026] Figure 6 A schematic diagram of the architecture of a compressed air system provided in an embodiment of the present application;

[0027] Figure 7 A schematic diagram of a pressure control flow of a compressed air system provided in an embodiment of the present application;

[0028] Figure 8 is a structural schematic diagram of a control device for a compressed air system provided in an embodiment of the present application;

[0029] Fig. 9 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0032] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0033] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0035] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0036] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0037] At present, in the actual operation of the compressed air system in the related technology, the air supply end of the compressed air system usually adopts manual adjustment to increase the air supply pressure in order to maintain the stability of the gas pressure at the user end. When the user end load is low during the operation of the compressed air system, it is easy to cause the gas production to not match the demand, which is easy to cause the gas-using equipment to waste gas energy. In addition, the air compressor of the compressed air system is prone to frequent start and stop when the load at the gas end fluctuates greatly, and the pressure control signal at the gas end has lag, which will cause the stability and timeliness of the compressed air system to be poor. In order to improve the quality of batteries, vehicle components or other products that require compressed air supply, high requirements are usually placed on the stability and timeliness of the response of the compressed air system.

[0038] In order to improve the stability and timeliness of the compressed air system, the present application designs a control method for a compressed air system, which determines the operating parameters of the air compressor based on the first pressure of the main pipe of the gas pipeline network and at least one of the flow rates of the gas pipeline network, and the property parameters of the air compressor in the compressed air system; and determines the pressure adjustment value of the gas pipeline network based on the first pressure, the second pressure of the gas pipeline network at the user end and the target pressure.

[0039] According to the first pressure at the main pipe of the gas transmission network and at least one of the flow rates of the above-mentioned gas transmission network, as well as the attribute parameters of the air compressor, not only can the operating parameters of the air compressor be accurately acquired, the phenomenon of frequent start and stop of the compressed air system during operation can be effectively alleviated, and the stability of the operation of the compressed air system can be improved. According to the above-mentioned first pressure, the second pressure of the above-mentioned gas transmission network at the user end and the target pressure, not only can the pressure adjustment value of the gas transmission network be determined timely and effectively, but also the timeliness of the pressure control signal of the compressed air system can be improved.

[0040] However, the embodiments of the present application are not limited to the application scenarios listed above. Any other application scenarios that use a compressed air system for air supply control can control the pressure and flow of the air supply according to the method provided in the embodiments of the present application. This method can not only improve the stability of the compressed air system and the timeliness of the response, maximize customer needs, but also reduce energy waste, and has the advantages of small limitations and high universality.

[0041] The specific process of the control method of the compressed air system of the present application is described in detail below through specific embodiments. Figure 1 The flowchart of the control method of the compressed air system shown in FIG. 1 includes the following steps:

[0042] Step S101: Determine the operating parameters of the air compressor according to at least one of the first pressure at the main pipe of the gas transmission network and the flow rate of the gas transmission network, and the attribute parameters of the air compressor in the compressed air system.

[0043] Specifically, the execution subjects of the embodiments of the present application include but are not limited to programmable logic controllers (PLC), mobile phones, set-top boxes, televisions, tablet computers, laptop computers, PCs, wearable devices and other terminals. The air compressors in the compressed air system of the present application include but are not limited to high-pressure centrifugal air compressors, variable frequency air compressors, etc. Figure 6 As shown, compressed air is injected into the air storage tank from the dryer of the compressed air system. The embodiment of the present application can determine the operating parameters of the above-mentioned air compressor based on the first pressure at the main pipe of the gas transmission network (such as the network pressure of the main pipe at point P1) and at least one of the flow rates of the above-mentioned gas transmission network, as well as the attribute parameters of the air compressor in the compressed air system (maximum gas production and regulated gas production). It should be noted that the flow rate (instantaneous flow rate) of the gas transmission network here can be obtained by a flow detection device set at point P1, and the operating parameters of the air compressor include but are not limited to the number of air compressor operations, the power of the air compressor and other attribute parameters.

[0044] Step S102: Determine the pressure adjustment value of the gas pipeline network according to the first pressure, the second pressure of the gas pipeline network at the user end and the target pressure.

[0045] Specifically, Figure 6 As shown, for example, the second pressure includes the pipeline network pressure detected at point P2 at the user terminal N. According to the pipeline network pressure at point P1 of the mother pipe and the pipeline network pressure detected at point P2 at the user terminal N, as well as the target pressure set by the system, the pressure adjustment value of the gas transmission pipeline network that matches the air pressure required by the user can be accurately output.

[0046] In the technical solution of the embodiment of the present application, based on the first pressure at the main pipe of the gas pipeline network and at least one of the flow rates of the above-mentioned gas pipeline network, as well as the attribute parameters of the air compressor, not only can the operating parameters of the air compressor be accurately acquired, the phenomenon of frequent start and stop of the compressed air system during operation can be effectively alleviated, and the stability of the operation of the compressed air system can be improved. According to the above-mentioned first pressure, the second pressure of the above-mentioned gas pipeline network at the user end and the target pressure, not only can the pressure adjustment value of the gas pipeline network be determined timely and effectively, but also the timeliness of the pressure control signal of the compressed air system can be improved.

[0047] In another embodiment of the present application, Figure 2 As shown, the control method of the compressed air system specifically includes the following steps:

[0048] Step S201: According to the maximum flow of the gas transmission network and the gas output of each air compressor, determine the number of air compressors to be turned on that matches the maximum flow.

[0049] Specifically, the maximum flow rate of the gas pipeline network here includes the maximum value of the user-end flow rate, that is, the maximum amount of gas that can be used at the user end; the air compressor here includes piston air compressors, screw air compressors and variable frequency air compressors. For example, the gas output of an air compressor is 1 cubic meter / minute, and the maximum flow rate (instantaneous flow rate) of the gas pipeline network is 2.8 cubic meters / minute. At this time, 3 air compressors can be turned on.

[0050] In an embodiment of the present application, based on the maximum flow of the above-mentioned gas transmission network and the gas output of each air compressor, the number of air compressors to be turned on that matches the above-mentioned maximum flow can be accurately determined, thereby providing compressed air that matches the gas demand at the user end, reducing additional energy consumption and improving energy utilization.

[0051] Step S202: Determine the pressure adjustment value of the gas pipeline network according to the first pressure, the second pressure of the gas pipeline network at the user end and the target pressure.

[0052] The above step S202 has been described above and will not be repeated here.

[0053] In one or more embodiments, the air compressor includes a centrifugal air compressor and a variable frequency air compressor, and the method of determining the number of air compressors to be opened that matches the maximum flow rate according to the maximum flow rate of the gas transmission network and the gas output of each air compressor includes:

[0054] Calculate the sum of the gas production of centrifugal air compressors and variable frequency air compressors in different combinations; wherein the gas production of the centrifugal air compressor includes the minimum gas production and the regulated air intake;

[0055] The corresponding opening number when the sum of the above gas production is greater than or equal to the maximum flow of the above gas transmission network is determined as the opening number of the air compressor matching the above maximum flow.

[0056] Specifically, in an embodiment of the present application, for example, the gas output of the centrifugal air compressor is 1.2 cubic meters per minute, and the gas output of the variable frequency air compressor is 0.5 cubic meters per minute; assuming that the maximum flow rate (instantaneous flow rate) of the gas pipeline network is 2.8 cubic meters per minute, according to the gas output of the above-mentioned centrifugal air compressor and the variable frequency air compressor, different numbers of centrifugal air compressors and variable frequency air compressors are combined. For example, a combination of 2 centrifugal air compressors and 1 variable frequency air compressor can meet the maximum flow rate of the gas pipeline network, or 3 centrifugal air compressors can also meet the maximum flow rate of the gas pipeline network by turning on them at the same time.

[0057] In an embodiment of the present application, by combining the sum of the gas production of centrifugal air compressors and variable frequency air compressors in different numbers, the number of air compressors to be turned on that matches the maximum flow of the gas pipeline network can be accurately determined, which can not only reduce the frequent start and stop of air compressors in the air compression system, but also improve the utilization rate of compressed air energy.

[0058] In another embodiment of the present application, Figure 3 As shown, the control method of the compressed air system specifically includes the following steps:

[0059] Step S301: Determine the number of air compressors to be opened or closed based on the first pressure and the flow rate of the gas pipeline network, as well as the gas output of the currently running air compressor and at least one of the opening of the air intake valves of each air compressor.

[0060] In an embodiment of the present application, based on the above-mentioned first pressure and the flow rate of the above-mentioned gas transmission pipeline, as well as the gas output of the currently running air compressor and at least one of the opening of the air intake valve of each air compressor, the number of air compressors to be added or closed that matches the user end can be accurately determined, thereby determining the number of air compressors to be opened that is equivalent to the gas consumption of the user end, reducing the phenomenon of frequent start and stop of the air compressor, and improving the utilization rate of compressed air energy.

[0061] Step S302: Determine the pressure adjustment value of the gas pipeline network according to the first pressure, the second pressure of the gas pipeline network at the user end and the target pressure.

[0062] The above step S302 has been described above and will not be repeated here.

[0063] In one or more embodiments, determining the number of additional air compressors to be opened according to the first pressure, the flow rate of the gas pipeline network, and the gas output of the currently running air compressor includes:

[0064] When the first pressure is lower than the target pressure, the number of additional air compressors to be opened that matches the target pressure is determined.

[0065] Specifically, the target pressure is the pressure set according to the pressure required by the user-side pipeline network. When the first pressure at the mother pipe of the gas transmission network is lower than the target pressure, it means that the pressure at the mother pipe is insufficient and the number of operating air compressors needs to be increased. The number of additional air compressors is determined based on the target pressure.

[0066] Alternatively, when the current required flow rate of the gas pipeline network is greater than the system set flow rate, the number of additional air compressors to match the current required flow rate is determined; wherein the system set flow rate is the maximum gas output of the currently operating air compressor.

[0067] Specifically, the currently required flow rate here includes the gas flow rate required by the user in real time. When the flow rate set by the system is less than the current flow rate of the gas pipeline network, it means that the gas production of the air compressor running at this time is insufficient, and the number of running air compressors needs to be increased. The number of additional air compressors is determined based on the currently required flow rate.

[0068] In an embodiment of the present application, by combining the sum of the gas production of centrifugal air compressors and variable frequency air compressors in different numbers, the number of air compressors to be turned on that matches the maximum flow of the gas pipeline network can be accurately determined, which can not only reduce the frequent start and stop of air compressors in the air compression system, but also improve the utilization rate of compressed air energy.

[0069] In one or more embodiments, determining the number of air compressors to be shut down based on the first pressure and the flow rate of the gas pipeline network, as well as the gas output of the air compressors currently running in the compressed air system and the opening of the air inlet valves of each air compressor includes:

[0070] When the above-mentioned first pressure is greater than or equal to the target pressure, the current required flow rate of the above-mentioned gas pipeline network is less than the system set flow rate, and the opening of the air intake valve of each air compressor is less than the preset threshold, the number of air compressors to be closed that matches the above-mentioned target pressure or target flow rate is determined; wherein the above-mentioned system set flow rate is the maximum gas output of the currently operating air compressor.

[0071] Specifically, the currently required flow rate here includes the gas flow rate required by the user in real time. When the first pressure at the mother pipe of the gas transmission network is greater than or equal to the target pressure, it means that the pressure at the mother pipe is too high, and when the flow rate set by the system is greater than or equal to the current flow rate of the gas transmission network, it means that the gas production of the air compressor running at this time is too large. The preset threshold value of the air compressor intake valve opening here can be set according to actual production needs. When the intake valve opening of each air compressor is less than the preset threshold value, it means that the current gas production is too much when the intake valve of the air compressor is opened at a small degree; at this time, the number of running air compressors needs to be reduced. The embodiment of the present application can appropriately adjust the total gas production by adjusting the intake valve opening.

[0072] In another embodiment of the present application, Figure 4 As shown, the control method of the compressed air system specifically includes the following steps:

[0073] Step S401: Determine the operating parameters of the air compressor according to at least one of the first pressure at the main pipe of the gas transmission network and the flow rate of the gas transmission network, and the attribute parameters of the air compressor in the compressed air system.

[0074] Step S402: determining a first pressure adjustment value of the gas transmission network according to a first difference between the first pressure and the target pressure;

[0075] Step S403: determining the product of a preset pressure compensation coefficient and the first pressure adjustment value as the first pressure setting value;

[0076] Step S404: determining a second pressure setting value of the gas transmission network according to a second difference between the second pressure and the first pressure setting value;

[0077] Step S405: Determine the sum of the first pressure setting value and the second pressure setting value as the target pressure adjustment value of the gas transmission network.

[0078] Specifically, in the embodiments of the present application, Figure 7 As shown, according to the first difference between the first pressure (f(P2)) of the gas pipeline network at the user end and the target pressure (Set), the first pressure adjustment value R(PID1) of the gas pipeline network is determined. The product of the preset pressure compensation coefficient x and the first pressure adjustment value PID1 is determined as the first pressure setting value, that is, the first pressure setting value is Rx. According to the second difference between the second pressure (f(P1)) of the gas pipeline network at the mother pipe and the first pressure setting value Rx, the second pressure setting value PID2 of the gas pipeline network is determined, and the sum of the first pressure setting value Rx and the second pressure setting value PID2 is determined as the target pressure adjustment value of the gas pipeline network; that is, the target pressure adjustment value y=PID1*x+PID2.

[0079] The above step S401 has been described above and will not be repeated here.

[0080] The embodiment of the present application timely feeds back the first pressure at the main pipe of the gas transmission network and the second pressure of the gas transmission network at the user end to the control terminal of the compressed air, and can accurately determine the pressure adjustment value of the gas transmission network based on the pressure compensation coefficient, and can also timely and effectively provide the pressure adjustment value of the gas used at the user end, thereby improving the user experience.

[0081] In another embodiment of the present application, Figure 5 As shown, the control method of the compressed air system specifically includes the following steps:

[0082] Step S501: Determine the operating parameters of the air compressor according to at least one of the first pressure at the main pipe of the gas transmission network and the flow rate of the gas transmission network, and the attribute parameters of the air compressor in the compressed air system.

[0083] Step S502: Determine the pressure adjustment value of the gas pipeline network according to the first pressure, the second pressure of the gas pipeline network at the user end and the target pressure.

[0084] Step S503: determining adjustment parameters of the cooling fan according to the operation data of the cooling fan in the cooling tower of the compressed air system;

[0085] Step S504: Determine the adjustment parameters of the cooling water pump according to the operating data of the cooling water pump of the compressed air system.

[0086] In the embodiment of the present application, based on the operating data of the cooling fan and the cooling water pump, the adjustment parameters of the cooling fan and the cooling water pump can be accurately obtained, and the compressed air energy of the corresponding temperature can be accurately and effectively provided to the air compressor of the compressed air system.

[0087] In one or more embodiments, the operating data of the heat dissipation fan includes the cooling water temperature and the operating frequency of the heat dissipation fan. According to the operating data of the heat dissipation fan in the cooling tower, the adjustment parameters of the heat dissipation fan are determined, including:

[0088] When the cooling water temperature in the cooling tower is greater than the set interval temperature and the operating frequency of the cooling fan is greater than the set frequency, the number of cooling fans turned on is increased;

[0089] When the cooling water temperature in the cooling tower is less than or equal to the set temperature interval, and the operating frequency of the heat dissipation fan is less than or equal to the set frequency, the number of heat dissipation fans turned on is reduced.

[0090] In one or more embodiments, the operating data of the cooling water pump includes the supply and return water pressure difference of the cooling water and the operating frequency of the cooling water pump. According to the operating data of the cooling water pump, the operating parameters of the cooling water pump are determined, including:

[0091] When the supply and return water pressure difference of the cooling water is less than the set supply and return water pressure difference, and the operating frequency of the cooling water pump is greater than the set frequency, increase the number of cooling water pumps turned on;

[0092] When the supply and return water pressure difference of the cooling water is greater than or equal to the above-set supply and return water pressure difference, the operating frequency of the above-mentioned cooling water pump is less than or equal to the above-mentioned set frequency, and the flow rate of each branch pipe at the user end is less than the maximum flow rate of the currently operating cooling water pump, reduce the number of cooling water pumps that are turned on.

[0093] Based on the above embodiment, in another implementation manner of the present application, the control method of the above compressed air system specifically includes the following steps:

[0094] 1. Through the pressure detector and flow detector installed in the gas transmission network (main pipe), collect the network end (such as the pressure at point P1) and flow data (flow at point P1).

[0095] 2. Collect the pressure data of the gas transmission network at point P2, where the user end pressure is the most unfavorable (such as point P2).

[0096] 3. The air compressor centralized control device obtains various operating parameters of the air compressor (high-pressure centrifugal air compressor and variable frequency air compressor).

[0097] 4. The terminal flow range is determined by the flow data collected from the user terminal. The air compressor centralized control device adjusts the proportion of air compressors in the air compressor cluster based on the collected terminal flow range. The proportion of air compressors on needs to meet the following requirements: (minimum gas output of centrifugal air compressor + adjustable air intake output of centrifugal air compressor + gas output of variable frequency air compressor) > the maximum value of the gas flow required by the user end.

[0098] 5. The air compressor centralized control device controls the startup strategy of the air compressor according to the collected data, including:

[0099] When the first pressure of the gas transmission network at the main pipe is lower than the target pressure, determining to add an air compressor;

[0100] When the current required flow rate of the gas transmission network is greater than the system set flow rate, it is determined to add an air compressor; wherein the system set flow rate is the maximum gas output output by the currently running air compressor.

[0101] 6. The air compressor centralized control device controls the shutdown strategy of the air compressor according to the collected data, including:

[0102] When the above-mentioned first pressure is greater than or equal to the target pressure, the current required flow rate of the above-mentioned gas transmission network is less than the system set flow rate, and the opening of the air intake valve of each air compressor is less than a preset threshold value (such as 80%), the number of air compressors to be closed that match the above-mentioned target pressure or target flow rate is determined; wherein the above-mentioned system set flow rate is the maximum gas output of the currently operating air compressor.

[0103] 7. By collecting the pressure at the most unfavorable point (P2) at the user end and connecting it to the air compressor centralized control device for cascade control, the mother pipe gas supply pressure setting can be accurately corrected in real time. According to the gas pressure at the user end, gas supply can be achieved on demand, saving energy.

[0104] 8. Collect the operating data of the cooling tower cooling fan in the compressed air system, and collect the operating data of the cooling water pump in the compressed air system.

[0105] 9. Use the pressure detector and temperature detector installed on the cooling water network to collect the temperature and pressure data of the cooling water network.

[0106] 10. The air compressor centralized control device controls the cooling fan increase and decrease strategies according to the collected water supply temperature, including: when the cooling water temperature in the cooling tower is greater than the set interval temperature and the operating frequency of the cooling fan is greater than the set frequency, increase the number of cooling fans turned on;

[0107] When the cooling water temperature in the cooling tower is less than or equal to the above-mentioned set interval temperature and the operating frequency of the above-mentioned heat dissipation fan is less than or equal to the above-mentioned set frequency, the number of cooling fans turned on is reduced.

[0108] 11. The air compressor centralized control device controls the cooling water pump increase and decrease strategy according to the collected water supply temperature, including: when the cooling water supply and return water pressure difference is less than the set supply and return water pressure difference, and the operating frequency of the above cooling water pump is greater than the set frequency, increase the number of cooling water pumps opened;

[0109] When the supply and return water pressure difference of the cooling water is greater than or equal to the above-set supply and return water pressure difference, the operating frequency of the above-mentioned cooling water pump is less than or equal to the above-mentioned set frequency, and the flow rate of each branch pipe at the user end is less than the maximum flow rate of the currently operating cooling water pump, reduce the number of cooling water pumps that are turned on.

[0110] By applying the technical solution of the present application and controlling and regulating the compressed air system, the frequent start and stop of the air compressor during operation can be effectively reduced, and the gas venting caused by unstable gas load at the user end can be reduced; in addition, by controlling the temperature and pressure of the air compressor cooling water, the gas flow and pressure required by the user end can be accurately met, reducing the waste of gas energy.

[0111] The present application also provides a control device for a compressed air system, which is used to execute the control method for the compressed air system provided in the above embodiments. Figure 8 As shown, the device comprises:

[0112] The first determining unit 801 is used to determine the operating parameters of the air compressor according to at least one of the first pressure at the main pipe of the gas transmission network and the flow rate of the gas transmission network, and the attribute parameters of the air compressor in the compressed air system;

[0113] The second determining unit 802 is used to determine the pressure adjustment value of the gas pipeline network according to the first pressure, the second pressure of the gas pipeline network at the user end and the target pressure.

[0114] In the technical solution of the embodiment of the present application, based on the maximum flow of the above-mentioned gas transmission network and the gas output of each air compressor, the number of air compressors to be opened that matches the above-mentioned maximum flow can be accurately determined, thereby providing compressed air that matches the gas demand at the user end, reducing additional energy consumption and improving energy utilization.

[0115] In one or more embodiments, the attribute parameter includes the gas output of the air compressor, and the operation parameter includes the number of times the air compressor is turned on;

[0116] The first determination unit 801 includes: a first determination module, which is used to determine the number of air compressors to be turned on that matches the maximum flow rate according to the maximum flow rate of the gas transmission network and the gas output of each air compressor.

[0117] In one or more embodiments, the air compressor includes a centrifugal air compressor and a variable frequency air compressor, and the first determination module includes:

[0118] A calculation subunit, used to respectively calculate the sum of the gas production of centrifugal air compressors and variable frequency air compressors in different combinations; wherein the gas production of the centrifugal air compressor includes the minimum gas production and the regulated air intake;

[0119] The first determination subunit is used to determine the corresponding opening number when the sum of the above-mentioned gas production is greater than or equal to the maximum flow of the above-mentioned gas transmission pipeline network as the opening number of the air compressors matching the above-mentioned maximum flow.

[0120] In one or more embodiments, the first determining unit 801 further includes:

[0121] The second determination module is used to determine the number of air compressors to be opened or closed based on the first pressure and the flow of the gas pipeline network, as well as the gas output of the currently running air compressor and at least one of the opening of the air intake valve of each air compressor.

[0122] In one or more embodiments, according to the above-mentioned second determination module, it includes:

[0123] A second determining subunit is used to determine the additional number of air compressors matching the target pressure when the first pressure is lower than the target pressure; or

[0124] The third determination subunit is used to determine the additional number of air compressors that match the above-mentioned currently required flow rate when the current required flow rate of the above-mentioned gas transmission network is greater than the system set flow rate; wherein the above-mentioned system set flow rate is the maximum gas output output of the currently operating air compressor.

[0125] In one or more embodiments, according to the above-mentioned second determination module, it includes:

[0126] The fourth determination subunit is used to determine the number of air compressors to be closed that match the target pressure or target flow when the first pressure is greater than or equal to the target pressure, the current required flow of the gas pipeline network is less than the system set flow, and the opening of the air intake valve of each air compressor is less than a preset threshold;

[0127] The system sets the flow rate as the maximum gas output of the currently running air compressor.

[0128] In one or more embodiments, the second determining unit 802 includes:

[0129] A third determination module, configured to determine a first pressure adjustment value of the gas transmission network according to a first difference between the first pressure and the target pressure;

[0130] A fourth determination module, used to determine the product of a preset pressure compensation coefficient and the first pressure adjustment value as a first pressure setting value;

[0131] a fifth determination module, configured to determine a second pressure setting value of the gas transmission network according to a second difference between the second pressure and the first pressure setting value;

[0132] The sixth determination module is used to determine the sum of the first pressure setting value and the second pressure setting value as the target pressure adjustment value of the gas transmission network.

[0133] In one or more embodiments, the control device of the compressed air system further includes:

[0134] A third determining unit, configured to determine adjustment parameters of the cooling fan according to operation data of the cooling fan in the cooling tower of the compressed air system;

[0135] The fourth determination unit is used to determine the adjustment parameters of the cooling water pump according to the operation data of the cooling water pump of the compressed air system.

[0136] In one or more implementations, the third determining unit includes:

[0137] A first regulating module is used to increase the number of cooling fans turned on when the cooling water temperature in the cooling tower is greater than the set interval temperature and the operating frequency of the cooling fan is greater than the set frequency;

[0138] The second regulating module is used to reduce the number of cooling fans turned on when the cooling water temperature in the cooling tower is less than or equal to the set temperature range and the operating frequency of the cooling fan is less than or equal to the set frequency.

[0139] In one or more implementations, the fourth determining unit includes:

[0140] A third regulating module is used to increase the number of cooling water pumps turned on when the cooling water supply and return water pressure difference is less than the set supply and return water pressure difference and the operating frequency of the cooling water pump is greater than the set frequency;

[0141] The fourth regulating module is used to reduce the number of cooling water pumps that are turned on when the supply and return water pressure difference of the cooling water is greater than or equal to the above-set supply and return water pressure difference, the operating frequency of the above-mentioned cooling water pump is less than or equal to the above-mentioned set frequency, and the flow rate of each branch pipe at the user end is less than the maximum flow rate of the currently operating cooling water pump.

[0142] The control device of the compressed air system provided in the above-mentioned embodiment of the present application and the control method of the compressed air system provided in the embodiment of the present application are based on the same inventive concept and have the same beneficial effects as the methods adopted, run or implemented by the application programs stored therein.

[0143] Fig. 9 The electronic device 900 is a logic structure block diagram of an electronic device according to an exemplary embodiment. For example, the electronic device 900 may be a programmable logic controller, a motor controller, a vehicle controller, a domain controller or other industrial production equipment, etc., which is disposed inside an electric device.

[0144] In an exemplary embodiment, a non-temporary computer-readable storage medium including instructions is also provided, such as a memory including instructions, the instructions can be executed by a battery processor to complete the control method of the compressed air system, the method comprising: determining the operating parameters of the air compressor according to the first pressure at the main pipe of the gas pipeline network and at least one of the flow rate of the gas pipeline network, and the attribute parameters of the air compressor in the compressed air system; determining the pressure adjustment value of the gas pipeline network according to the first pressure, the second pressure of the gas pipeline network at the user end and the target pressure. Optionally, the instructions can also be executed by the processor of the battery to complete the other steps involved in the above exemplary embodiment. For example, the non-temporary computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0145] In an exemplary embodiment, an application / computer program product is also provided, including one or more instructions, which can be executed by a processor of a battery to complete the control method of the compressed air system, the method comprising: determining the operating parameters of the air compressor according to the first pressure at the main pipe of the gas pipeline network and at least one of the flow rate of the gas pipeline network, and the attribute parameters of the air compressor in the compressed air system; determining the pressure adjustment value of the gas pipeline network according to the first pressure, the second pressure of the gas pipeline network at the user end and the target pressure. Optionally, the instructions can also be executed by the processor of the battery to complete other steps involved in the exemplary embodiment.

[0146] Fig. 9 FIG. 9 is an example diagram of an electronic device 900. A person skilled in the art can understand that Fig. 9 It is only an example of the electronic device 900 and does not constitute a limitation of the electronic device 900. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the electronic device 900 may also include input and output devices, network access devices, buses, etc.

[0147] The processor 902 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor 902 may also be any conventional processor, etc. The processor 902 is the control center of the electronic device 900, and uses various interfaces and lines to connect various parts of the entire electronic device 900.

[0148] The memory 901 can be used to store computer-readable instructions. The processor 902 implements various functions of the electronic device 900 by running or executing the computer-readable instructions or modules stored in the memory 901 and calling the data stored in the memory 901. The memory 901 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the electronic device 900, etc. In addition, the memory 901 can include a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM) or other non-volatile / volatile storage devices.

[0149] If the module integrated in the electronic device 900 is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and the computer-readable instructions that can be completed by the related hardware can be stored in a computer-readable storage medium. When the computer-readable instructions are executed by the processor, the steps of the above-mentioned various method embodiments can be implemented.

[0150] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0151] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A method for controlling a compressed air system, characterized in that: include: Determining the operating parameters of the air compressor according to at least one of a first pressure at a main pipe of the gas transmission network and a flow rate of the gas transmission network, and a property parameter of the air compressor in the compressed air system; A pressure adjustment value of the gas transmission pipeline network is determined according to the first pressure, a second pressure of the gas transmission pipeline network at a user end, and a target pressure.

2. The method according to claim 1, characterized in that The attribute parameter includes the gas output of the air compressor, and the operation parameter includes the number of times the air compressor is turned on; Determining the operating parameters of the air compressor according to at least one of the first pressure at the main pipe of the gas transmission network and the flow rate of the gas transmission network, and the attribute parameters of the air compressor of the compressed air system includes: According to the maximum flow rate of the gas transmission network and the gas output of each air compressor, the number of air compressors to be opened that matches the maximum flow rate is determined.

3. The method according to claim 2, characterized in that The air compressor includes a centrifugal air compressor and a variable frequency air compressor. The method of determining the number of air compressors to be opened that matches the maximum flow rate according to the maximum flow rate of the gas transmission network and the gas output of each air compressor includes: Calculate the sum of the gas production of centrifugal air compressors and variable frequency air compressors in different combinations; wherein the gas production of the centrifugal air compressor includes the minimum gas production and the regulated air intake; The opening number corresponding to the case where the sum of the gas production is greater than or equal to the maximum flow of the gas transmission network is determined as the opening number of the air compressor matching the maximum flow.

4. The method according to any one of claims 1 to 3, characterized in that: The method of determining the operating parameters of the air compressor according to at least one of the first pressure at the main pipe of the gas transmission network and the flow rate of the gas transmission network, and the attribute parameters of the air compressor of the compressed air system, further includes: The number of air compressors to be opened or closed is determined based on the first pressure and the flow rate of the gas transmission network, as well as the gas output of the currently running air compressors and at least one of the opening of the air intake valves of each air compressor.

5. The method according to claim 4, characterized in that Determining the number of additional air compressors to be opened according to the first pressure, the flow rate of the gas transmission network, and the gas output of the currently running air compressors includes: When the first pressure is lower than the target pressure, determining the number of additional air compressors to be opened that match the target pressure; or When the current required flow rate of the gas pipeline network is greater than the system set flow rate, the number of additional air compressors to match the current required flow rate is determined; wherein the system set flow rate is the maximum gas output of the currently operating air compressor.

6. The method according to claim 4, characterized in that Determining the number of air compressors to be shut down according to the first pressure and the flow rate of the gas transmission network, as well as the gas output of the air compressors currently running in the compressed air system and the opening of the air inlet valves of each air compressor, includes: When the first pressure is greater than or equal to the target pressure, the current required flow rate of the gas transmission network is less than the system set flow rate, and the opening of the air intake valve of each air compressor is less than a preset threshold, determining the number of air compressors to be closed that match the target pressure or target flow rate; The system set flow rate is the maximum gas output of the currently running air compressor.

7. The method according to claim 1, characterized in that The step of determining the pressure adjustment value of the gas pipeline network according to the first pressure, the second pressure of the gas pipeline network at the user terminal, and the target pressure includes: determining a first pressure adjustment value of the gas transmission network according to a first difference between the first pressure and a target pressure; Determine the product of a preset pressure compensation coefficient and the first pressure adjustment value as a first pressure setting value; determining a second pressure setting value of the gas transmission network according to a second difference between the second pressure and the first pressure setting value; The sum of the first pressure setting value and the second pressure setting value is determined as the target pressure adjustment value of the gas transmission network.

8. The method according to claim 1, characterized in that The method further comprises: Determining adjustment parameters of the cooling fan according to operation data of the cooling fan in the cooling tower of the compressed air system; According to the operating data of the cooling water pump of the compressed air system, the adjustment parameters of the cooling water pump are determined.

9. The method according to claim 8, characterized in that The operation data of the heat dissipation fan includes the cooling water temperature and the heat dissipation fan operation frequency. According to the operation data of the heat dissipation fan in the cooling tower, the adjustment parameters of the heat dissipation fan are determined, including: When the cooling water temperature in the cooling tower is greater than the set interval temperature and the operating frequency of the cooling fan is greater than the set frequency, increasing the number of cooling fans turned on; When the cooling water temperature in the cooling tower is less than or equal to the set interval temperature and the operating frequency of the heat dissipation fan is less than or equal to the set frequency, the number of heat dissipation fans turned on is reduced.

10. The method according to claim 8 or 9, characterized in that: The operating data of the cooling water pump includes the supply and return water pressure difference of the cooling water and the operating frequency of the cooling water pump. According to the operating data of the cooling water pump, the operating parameters of the cooling water pump are determined, including: When the supply and return water pressure difference of the cooling water is less than the set supply and return water pressure difference and the operating frequency of the cooling water pump is greater than the set frequency, increase the number of cooling water pumps turned on; When the supply and return water pressure difference of the cooling water is greater than or equal to the set supply and return water pressure difference, the operating frequency of the cooling water pump is less than or equal to the set frequency, and the flow rate of each branch pipe at the user end is less than the maximum flow rate of the currently operating cooling water pump, reduce the number of cooling water pumps that are turned on.

11. A control device for a compressed air system, characterized in that: include: a first determining unit, configured to determine an operating parameter of the air compressor according to at least one of a first pressure at a main pipe of the gas transmission network and a flow rate of the gas transmission network, and a property parameter of the air compressor in the compressed air system; The second determining unit is used to determine the pressure adjustment value of the gas transmission pipeline network according to the first pressure, the second pressure of the gas transmission pipeline network at the user end and the target pressure.

12. An electronic device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to execute the method according to any one of claims 1 to 10 through the computer program.

13. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein the program executes the method described in any one of claims 1 to 10 when executed.

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