Air compressor station control method and device, electronic equipment and storage medium

Abstract

The invention discloses a control method and device for an air compressor station, electronic equipment and a storage medium, and relates to the technical field of automatic control. The method comprises the steps that a preset main pipe pressure threshold value range of an air supply main pipe under a to-be-detected target air compressor station and the output pressure of a target air compressor set under the target air compressor station in the current state are used for detecting the preset main pipe pressure threshold value range of the air supply main pipe under the to-be-detected target air compressor station; determining a start-stop mode of the target air compressor unit; based on a pipe network pressure difference value between the pipe network pressure in the target air compressor unit and a preset pipe network pressure threshold value, the initial opening degree of an inlet guide vane valve in the target air compressor unit is determined; and whether the initial opening degree of the inlet guide vane valve needs to be adjusted or not is determined based on the inlet pressure output by the inlet guide vane valve within the preset time and the pipe network outlet pressure output by the pipe network within the preset time. According to the embodiment, the response speed of the guide vane valve and the accuracy of the opening degree of the guide vane valve are improved, the probability that the target air compressor set works in a low-efficiency load interval for a long time is reduced, and energy waste is avoided.

Description

Technical Field

[0001] The present application relates to the field of automation control technology, and in particular to a control method, device, electronic equipment and storage medium for an air compressor station. Background Art

[0002] At present, the traditional control method for air compressor stations is mainly to manually decide to start and stop the air compressor unit based on the specific conditions of the supply pipeline pressure and the terminal pressure (such as through dialogue or telephone communication between operators). The start and stop conditions of the air compressor need to be manually confirmed before starting.

[0003] However, the start and stop of the unit is controlled remotely or by local manual operation, which may result in untimely start and stop of the unit, and the air compressor unit is controlled in the outlet pressure setting mode, that is, the unit adjusts the opening of the inlet and outlet guide vane valves in real time according to the size of the outlet pressure. This control method only relies on a single outlet pressure to determine the opening of the guide vane valve, which not only causes the guide vane valve to respond slowly, but also leads to poor accuracy in determining the guide vane valve opening under a single condition. In addition, after adjusting the guide vane valve, the traditional unit may cause the air compressor unit to work in a low-efficiency load range for a long time, thereby causing energy waste. Summary of the invention

[0004] The embodiments of the present application provide a control method, device, electronic device and storage medium for an air compressor station. The embodiments provided by the present application solve the technical problems in the prior art that the guide vane valve has a slow response, poor accuracy and the air compressor unit works in an inefficient load range for a long time, resulting in energy waste. The embodiments provided by the present application improve the response speed of the guide vane valve and the accuracy of the guide vane valve opening, reduce the probability of the target air compressor unit working in an inefficient load range for a long time, and avoid energy waste.

[0005] In a first aspect of an embodiment of the present application, an embodiment of the present application provides a control method for an air compressor station, the control method for an air compressor station comprising:

[0006] Determine the start / stop mode of the target air compressor unit based on the preset main pipe pressure threshold range of the air supply main pipe under the target air compressor station to be detected and the output pressure of the target air compressor unit under the target air compressor station in the current state;

[0007] When the target air compressor unit is in a non-loading and unloading mode, determining an initial opening of an inlet guide vane valve in the target air compressor unit based on a pipeline pressure difference between a pipeline pressure in the target air compressor unit and a preset pipeline pressure threshold;

[0008] When the target air compressor unit is in the on mode, determining whether it is necessary to adjust the initial opening of the inlet guide vane valve based on the inlet pressure output by the inlet guide vane valve within a preset time and the outlet pressure of the pipeline network output by the pipeline network within a preset time;

[0009] If necessary, based on the adjusted target opening of the inlet guide vane valve, load adjustment is performed on other air compressor units except the target air compressor unit to achieve control and regulation of the entire target air compressor station.

[0010] In a feasible implementation manner, the preset mother pipe pressure threshold range includes a preset mother pipe pressure upper limit threshold and a preset mother pipe pressure lower limit threshold, and the preset mother pipe pressure threshold range of the gas supply mother pipe under the target air compressor station to be detected and the output pressure of the target air compressor unit under the target air compressor station in the current state, determining the start and stop mode of the target air compressor unit, includes:

[0011] If the output pressure of the target air compressor unit under the target air compressor station in the current state is greater than the preset main pipe pressure lower limit threshold, it is determined that the target air compressor unit enters the start mode;

[0012] If the output pressure is greater than a preset main pipe pressure upper limit threshold, it is determined that the target air compressor unit enters a stop mode.

[0013] In a feasible implementation manner, when the target air compressor unit is in a non-loading and unloading mode, determining the initial opening of the inlet guide vane valve in the target air compressor unit based on the pipeline pressure difference between the pipeline pressure in the target air compressor unit and a preset pipeline pressure threshold value includes:

[0014] When the target air compressor unit is in a non-loading and unloading mode, based on the pipeline pressure in the target air compressor unit and the external threshold level-pipeline pressure threshold data table, determine the preset threshold level corresponding to the pipeline pressure and the preset pipeline pressure threshold under the target threshold level;

[0015] Determining a pipeline network pressure difference between the pipeline network pressure and a preset pipeline network pressure threshold;

[0016] Based on the pipeline network pressure difference, an initial opening of the inlet guide vane valve in the target air compressor unit is determined.

[0017] In a feasible implementation manner, the initial opening includes a first initial opening and a second initial opening, and determining the initial opening of the inlet guide vane valve in the target air compressor unit based on the pipeline network pressure difference includes:

[0018] If the pipe network pressure difference is greater than the pipe network pressure difference threshold, the inlet guide vane valve in the target air compressor unit is determined to be at the first initial opening;

[0019] If the pipeline network pressure difference is less than or equal to the pipeline network pressure difference threshold, the inlet guide vane valve in the target air compressor unit is determined to be at a second initial opening, wherein the first initial opening is greater than the second initial opening.

[0020] In a feasible implementation manner, when the target air compressor unit is in the on mode, determining whether it is necessary to adjust the initial opening of the inlet guide vane valve based on the inlet pressure output by the inlet guide vane valve within a preset time and the outlet pressure of the pipeline network output by the pipeline network within a preset time includes:

[0021] When the target air compressor unit is in the on mode, determining a pressure change value between an inlet pressure output by an inlet guide vane valve within a preset time and an outlet pressure of the pipeline network output by the pipeline network within a preset time;

[0022] Based on the pressure change value and a preset pressure change threshold range, it is determined whether the initial opening of the inlet guide vane valve needs to be adjusted.

[0023] In a feasible implementation manner, the preset pressure change threshold range includes a preset pressure change upper limit value and a preset pressure change lower limit value, and determining whether it is necessary to adjust the initial opening of the inlet guide vane valve based on the pressure change value and the preset pressure change threshold range includes:

[0024] If the pressure change value is greater than the preset pressure change upper limit value within the preset time, or the pressure change value is less than the preset pressure change lower limit value within the preset time, it is necessary to adjust the initial opening of the inlet guide vane valve;

[0025] If the pressure change value is less than or equal to the preset pressure change upper limit value within the preset time and the pressure change value is greater than or equal to the preset pressure change lower limit value within the preset time, there is no need to adjust the initial opening of the inlet guide vane valve.

[0026] In a feasible implementation manner, if necessary, based on the adjusted target opening of the inlet guide vane valve, load adjustment is performed on other air compressor units except the target air compressor unit, including:

[0027] If the initial opening of the inlet guide vane valve needs to be adjusted, the change in the opening of the inlet guide vane valve is determined based on the historical compressed air usage data table of the target air compressor unit;

[0028] determining a target opening of the inlet guide vane valve according to a difference between an initial opening of the inlet guide vane valve and the changed opening;

[0029] When the inlet guide vane valve is at the target opening, the other air compressor units except the target air compressor unit of the target air compressor station are controlled to reduce / increase the load.

[0030] According to a second aspect of the embodiments of the present application, the embodiments of the present application provide a control device for an air compressor station, the control device for the air compressor station comprising:

[0031] A first determination module is used to determine the start / stop mode of the target air compressor unit based on a preset main pipe pressure threshold range of the air supply main pipe under the target air compressor station to be detected and the output pressure of the target air compressor unit under the target air compressor station in the current state;

[0032] A second determination module is used to determine the initial opening of the inlet guide vane valve in the target air compressor unit based on the pipeline pressure difference between the pipeline pressure in the target air compressor unit and a preset pipeline pressure threshold when the target air compressor unit is in a non-loading and unloading mode;

[0033] A third determination module is used to determine whether it is necessary to adjust the initial opening of the inlet guide vane valve based on the inlet pressure output by the inlet guide vane valve within a preset time and the outlet pressure of the pipeline network output by the pipeline network within a preset time when the target air compressor unit is in an open mode;

[0034] The adjustment module is used to adjust the load of other air compressor units except the target air compressor unit based on the adjusted target opening of the inlet guide vane valve if necessary, so as to realize control and regulation of the entire target air compressor station.

[0035] According to a third aspect of the embodiments of the present application, an electronic device is provided, comprising: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor communicates with the memory through the bus, and the machine-readable instructions are executed by the processor to perform the steps of the control method of the air compressor station as described above.

[0036] In a fourth aspect of the embodiments of the present application, the embodiments of the present application provide a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the control method of the air compressor station as described above are executed.

[0037] The control method, device, electronic device and storage medium of the air compressor station provided in the embodiments of the present application, compared with the prior art, the embodiments provided in the present application determine the start and stop mode of the target air compressor unit based on the preset mother pipe pressure threshold range of the air supply mother pipe under the target air compressor station to be detected and the output pressure of the target air compressor unit under the target air compressor station in the current state, and when the target air compressor unit is in the non-loading and unloading mode, based on the pipeline pressure difference between the pipeline pressure in the target air compressor unit and the preset pipeline pressure threshold, determine the initial opening of the inlet guide vane valve in the target air compressor unit, and then when the target air compressor unit is in the opening mode, the initial opening of the inlet guide vane valve in the target air compressor unit is determined. In this mode, based on the inlet pressure output by the inlet guide vane valve within a preset time and the outlet pressure of the pipeline network output within a preset time, it is determined whether the initial opening of the inlet guide vane valve needs to be adjusted, and if necessary, based on the target opening of the adjusted inlet guide vane valve, the load of other air compressor units in the target air compressor station except the target air compressor unit is adjusted to achieve control and regulation of the entire target air compressor station. The embodiment provided in the present application improves the response speed of the guide vane valve and the accuracy of the guide vane valve opening, reduces the probability of the target air compressor unit working in an inefficient load range for a long time, and avoids energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 One of the flow charts of a control method of an air compressor station provided in an embodiment of the present application is shown;

[0039] Figure 2 A structural block diagram of a control device for an air compressor station provided in an embodiment of the present application is shown;

[0040] Figure 3 A schematic structural diagram of an electronic device provided in an embodiment of the present application is shown.

[0041] Figure 2 and Figure 3 The corresponding relationship between the reference numerals and the names of the drawings is as follows:

[0042] 200 control device of air compressor station; 210 first determination module; 220 second determination module; 230 third determination module; 240 adjustment module; 300 electronic device; 310 processor; 320 memory; 330 bus. DETAILED DESCRIPTION

[0043] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0044] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0045] First, the applicable application scenarios of the present application are introduced. The embodiments provided in the present application are applicable to the field of automation control technology.

[0046] At present, the traditional control method for air compressor stations is mainly to manually decide to start and stop the air compressor unit based on the specific conditions of the supply pipeline pressure and the terminal pressure (such as through dialogue or telephone communication between operators). The start and stop conditions of the air compressor need to be manually confirmed before starting.

[0047] At present, the air compressor unit mainly monitors the inlet guide vane valve, bypass guide vane valve and the air pressure status data of the unit outlet in real time through the machine side cabinet control system, so as to intervene in the operating load of a single air compressor unit. If the change in the outlet air pressure exceeds the set upper pressure limit within a certain period, the corresponding air compressor unit is controlled to reduce the opening of the inlet guide vane valve or increase the opening of the bypass guide vane valve, thereby reducing the load of the corresponding unit and reducing the outlet air pressure of the unit; if the change in the outlet air pressure is lower than the set lower pressure limit within a certain period, the air compressor unit is controlled to increase the opening of the inlet guide vane valve or reduce the opening of the bypass guide vane valve, thereby increasing the load of the corresponding unit and increasing the outlet air pressure of the unit.

[0048] However, the start and stop of the unit is controlled remotely or by local manual operation, which may result in untimely start and stop of the unit, and the air compressor unit is controlled in the outlet pressure setting mode, that is, the unit adjusts the opening of the inlet and outlet guide vane valves in real time according to the size of the outlet pressure. This control method only relies on a single outlet pressure to determine the opening of the guide vane valve, which not only causes the guide vane valve to respond slowly, but also leads to poor accuracy in determining the guide vane valve opening under a single condition. In addition, after adjusting the guide vane valve, the traditional unit may cause the air compressor unit to work in a low-efficiency load range for a long time, thereby causing energy waste.

[0049] Based on this, the embodiments of the present application provide a control method, device, electronic device and storage medium for an air compressor station. The embodiments provided by the present application solve the technical problems in the prior art that the guide vane valve has a slow response, poor accuracy and the air compressor unit works in an inefficient load range for a long time, resulting in energy waste. The embodiments provided by the present application improve the response speed of the guide vane valve and the accuracy of the guide vane valve opening, reduce the probability of the target air compressor unit working in an inefficient load range for a long time, and avoid energy waste.

[0050] See also Figure 1 , Figure 1 One of the flow charts of a control method of an air compressor station provided in an embodiment of the present application is as follows: Figure 1 As shown, the control method of the air compressor station includes the following steps:

[0051] S101. Determine a start / stop mode of a target air compressor unit based on a preset main pipe pressure threshold range of an air supply main pipe under a target air compressor station to be detected and an output pressure of a target air compressor unit under the target air compressor station in a current state.

[0052] In this step, the embodiment provided by the present application compares the output pressure of the centrifugal target air compressor unit selected under the target air compressor station with the preset mother pipe pressure threshold range of the air supply mother pipe under the current state, and outputs an equivalent comprehensive passive analog signal based on the comparison result, and connects the comprehensive passive analog signal to the corresponding air compressor electrical control cabinet to prompt the PID regulation module in the target air compressor unit to automatically adjust and determine the start and stop mode of the target air compressor unit (i.e., by automatically adjusting the intake valve opening of the target air compressor unit to achieve automatic start and stop). The present application solves the technical barrier of traditional air compressors that require manual judgment on start and stop, and realizes automatic start and stop judgment.

[0053] It is assumed that the DC current signal of the integrated analog signal in the embodiment provided in the present application can be specifically but not limited to 4 to 20 mA.

[0054] It can be understood that the embodiment provided by the present application connects an external PLC control system to the original target air compressor station to be detected, so as to realize the transformation of the relevant lines of the current target air compressor station to be detected. It is assumed that the embodiment provided by the present application adopts a relay switching method to connect the original target air compressor station and the external PLC control system, and maintains the signal control mode of the target air compressor station itself when the relay is not energized; when the relay is energized, various types of collected information in the target air compressor are transmitted to the external PLC control system.

[0055] It is assumed that the various types of collected information in the embodiments provided in the present application include but are not limited to: a preset main pipe pressure threshold range of the gas supply main pipe, and the output pressure of the target air compressor unit in the target air compressor station in the current state, etc.

[0056] In the above, it is assumed that the relay pull-in mode in the embodiment provided in the present application can be set to: pressure indirect control mode, which can be specifically but not limitedly calibrated as: "0" mode.

[0057] Here, the model of the external PLC control system in the embodiment provided in this application can be customized according to different application scenarios and usage conditions. It is assumed that the model of the PLC control system in the embodiment provided in this application is specifically: Siemens 300PLC control system.

[0058] S102: When the target air compressor unit is in a non-loading and unloading mode, determine the initial opening of the inlet guide vane valve in the target air compressor unit based on the pipeline pressure difference between the pipeline pressure in the target air compressor unit and a preset pipeline pressure threshold.

[0059] In this step, when it is determined that the loading and unloading mode of the target air compressor unit is not triggered (i.e., when the guide vane valve is positioned in the "1" mode), that is, when the guide vane valve provided in the present application is not operating stably, the initial opening of the inlet guide vane valve is determined by segmented and graded pressure by judging the pipeline pressure difference between the pipeline pressure in the target air compressor unit and multiple preset pipeline pressure thresholds.

[0060] It can be understood that the number of preset pipeline pressure thresholds in this embodiment is multiple (at least one), therefore, it is necessary to calculate the difference between the pipeline pressure in the target air compressor unit and the closest preset pipeline pressure threshold, and then determine the initial opening of the inlet guide vane valve in the target air compressor unit based on the calculated difference, and the initial opening can make the actual pipeline pressure of the inlet guide vane valve at the initial opening and the actual pipeline pressure difference between the corresponding preset pipeline pressure threshold be able to stabilize within a certain range (such as ±0.05bar, which can be adaptively adjusted according to the application scenario of the real scene). After determining the initial opening of the inlet guide vane valve in the target air compressor unit, the embodiment provided by the present application can directly fix the inlet guide vane valve at the current position according to the initial opening, so as to stabilize the inlet guide vane valve when the loading and unloading mode is not triggered, and the present embodiment can make the inlet guide vane valve quickly adjust when the pipeline pressure difference is large, and slowly adjust when the pipeline pressure difference is small, so as to stabilize within a certain range (such as ±0.05bar).

[0061] S103. When the target air compressor unit is in the on mode, based on the inlet pressure output by the inlet guide vane valve within a preset time and the network outlet pressure output by the network within a preset time, determine whether it is necessary to adjust the initial opening of the inlet guide vane valve.

[0062] In this step, after the initial opening of the inlet guide vane valve is positioned, the target air compressor unit is controlled to be turned on. At this time, the inlet pressure output by the inlet guide vane valve within a preset time, the pressure output by the bypass guide vane valve within a preset time, and the network outlet pressure output by the pipeline within a preset time are monitored in real time, and based on the pressure change value between the inlet pressure and the pipeline outlet pressure, it is determined whether the initial opening of the inlet guide vane valve needs to be adjusted.

[0063] It can be understood that the embodiment provided by the present application determines the operating efficiency of the target air compressor unit based on the historical compressed air usage data table of the target air compressor unit and the efficiency curve diagram of the target air compressor unit. The present application determines through calculation that the operating efficiency is maximum when the opening of the variable inlet guide vane valve is mainly in the range of 30%-70%.

[0064] S104. If necessary, based on the adjusted target opening of the inlet guide vane valve, load adjustment is performed on other air compressor units except the target air compressor unit to achieve control and regulation of the entire target air compressor station.

[0065] In this step, when it is determined that the initial opening of the inlet guide vane valve needs to be adjusted, the initial opening of the corresponding inlet guide vane valve is adjusted accordingly, and after the adjustment to the target opening, the load of other air compressor units except the target air compressor station is adjusted to prevent the target air compressor station from operating in an inefficient load range for a long time, so as to achieve high-load operation of the target air compressor station, thereby improving the efficiency and practicality of the target air compressor station.

[0066] The control method for an air compressor station provided in an embodiment of the present application, compared with the prior art, determines the start-stop mode of the target air compressor unit based on a preset mother pipe pressure threshold range of the air supply mother pipe under the target air compressor station to be detected and the output pressure of the target air compressor unit under the target air compressor station in the current state, and when the target air compressor unit is in a non-loading and unloading mode, determines the initial opening of the inlet guide vane valve in the target air compressor unit based on the pipeline pressure difference between the pipeline pressure in the target air compressor unit and the preset pipeline pressure threshold, and then when the target air compressor unit is in an open mode, determines the initial opening of the inlet guide vane valve in the target air compressor unit based on the inlet pressure difference between the pipeline pressure in the target air compressor unit and the preset pipeline pressure threshold. The inlet pressure output by the inlet guide vane valve within a preset time and the outlet pressure of the pipeline network output within a preset time are used to determine whether it is necessary to adjust the initial opening of the inlet guide vane valve, and if necessary, based on the target opening of the adjusted inlet guide vane valve, load adjustment is performed on the air compressor units other than the target air compressor unit in the target air compressor station to achieve control and regulation of the entire target air compressor station. The embodiment provided in the present application improves the response speed of the guide vane valve and the accuracy of the guide vane valve opening, reduces the probability of the target air compressor unit working in an inefficient load range for a long time, and avoids energy waste.

[0067] In one embodiment, the preset main pipe pressure threshold range includes a preset main pipe pressure upper limit threshold and a preset main pipe pressure lower limit threshold, and step S101 includes the following sub-steps:

[0068] Sub-step 1011: If the output pressure of the target air compressor unit under the target air compressor station in the current state is greater than the preset main pipe pressure lower limit threshold, it is determined that the target air compressor unit enters the start mode.

[0069] In this step, if the output pressure of the target air compressor unit in the current state exceeds the preset main pipe pressure lower limit threshold, it means that the target air compressor unit needs to be operated at this time. At this time, the target air compressor unit is controlled to enter the start mode.

[0070] Sub-step 1012: If the output pressure is greater than the preset main pipe pressure upper limit threshold, determine that the target air compressor unit enters the stop mode.

[0071] In this step, if the output pressure of the target air compressor unit in the current state exceeds the preset main pipe pressure upper threshold, it means that the target air compressor unit needs to stop running. At this time, the target air compressor unit is controlled to enter the stop mode.

[0072] In one embodiment, step S102 includes the following sub-steps:

[0073] Sub-step S1021, when the target air compressor unit is in the non-loading and unloading mode, based on the pipeline pressure in the target air compressor unit and the external threshold level-pipeline pressure threshold data table, determine the preset threshold level corresponding to the pipeline pressure and the preset pipeline pressure threshold under the target threshold level.

[0074] In this step, when the target air compressor unit is in the non-loading and unloading mode, the pipeline pressure in the target air compressor unit is first determined, and then the preset threshold level close to the pipeline pressure and the preset pipeline pressure threshold under the preset threshold level are found from the external threshold level-pipeline pressure threshold data table.

[0075] Sub-step S1022: determining the pipeline network pressure difference between the pipeline network pressure and a preset pipeline network pressure threshold.

[0076] In this step, after the preset pipeline network pressure threshold value at the preset threshold level is determined, the pipeline network pressure difference between the pipeline network pressure and the preset pipeline network pressure threshold value is calculated.

[0077] Sub-step S1023: determining the initial opening of the inlet guide vane valve in the target air compressor unit based on the pipe network pressure difference.

[0078] In this step, if the pipeline network pressure difference is greater than the pipeline network pressure difference threshold, the inlet guide vane valve in the target air compressor unit is determined to be the first initial opening; if the pipeline network pressure difference is less than or equal to the pipeline network pressure difference threshold, the inlet guide vane valve in the target air compressor unit is determined to be the second initial opening, wherein the first initial opening is greater than the second initial opening.

[0079] In one embodiment, step S103 includes the following sub-steps:

[0080] Sub-step S1031, when the target air compressor unit is in the on mode, determining the pressure change value between the inlet pressure output by the inlet guide vane valve within a preset time and the outlet pressure of the pipeline network output within a preset time.

[0081] In this step, when the target air compressor unit is in the on mode, the inlet pressure of the inlet guide vane valve, the pressure at the bypass guide vane valve and the corresponding pipeline outlet pressure of the pipeline are monitored in real time, and the pressure change value between the inlet pressure of the inlet guide vane valve and the pipeline outlet pressure within a preset time is calculated in real time.

[0082] Sub-step S1032: determining whether the initial opening of the inlet guide vane valve needs to be adjusted based on the pressure change value and the preset pressure change threshold range.

[0083] In this step, if the pressure change value is greater than the preset pressure change upper limit within the preset time, or the pressure change value is less than the preset pressure change lower limit within the preset time, it is necessary to adjust the initial opening of the inlet guide vane valve. At this time, it is necessary to increase the initial opening of the inlet guide vane valve, and the Siemens 300PLC control system reduces the load of other air compressor units; if the pressure change value is less than or equal to the preset pressure change upper limit within the preset time and the pressure change value is greater than or equal to the preset pressure change lower limit within the preset time, it is not necessary to adjust the initial opening of the inlet guide vane valve. At this time, it is necessary to reduce the initial opening of the inlet guide vane valve, and the Siemens 300PLC control system increases the load of other air compressor units.

[0084] Among them, the preset pressure change threshold range in the embodiment provided in the present application includes a preset pressure change upper limit value and a preset pressure change lower limit value.

[0085] In one embodiment, if necessary, based on the adjusted target opening of the inlet guide vane valve, load adjustment is performed on other air compressor units except the target air compressor unit, including:

[0086] If the initial opening of the inlet guide vane valve needs to be adjusted, the change opening of the inlet guide vane valve is determined based on the historical compressed air consumption data table of the target air compressor unit, and the target opening of the inlet guide vane valve is determined according to the difference between the initial opening and the change opening of the inlet guide vane valve. Then, when the inlet guide vane valve is at the target opening, the other air compressor units in the target air compressor station except the target air compressor unit are controlled to reduce / increase the load.

[0087] The control method for an air compressor station provided in an embodiment of the present application, compared with the prior art, determines the start / stop mode of the target air compressor unit based on a preset mother pipe pressure threshold range of the air supply mother pipe under the target air compressor station to be detected and the output pressure of the target air compressor unit under the target air compressor station in the current state, and when the target air compressor unit is in a non-loading / unloading mode, determines the initial opening of the inlet guide vane valve in the target air compressor unit based on the pipeline pressure difference between the pipeline pressure in the target air compressor unit and the preset pipeline pressure threshold value, and then, when the target air compressor unit is in an open mode, determines the initial opening of the inlet guide vane valve in the target air compressor unit based on the inlet pressure output by the inlet guide vane valve within a preset time and the output pressure of the pipeline within a preset time. The output network outlet pressure is used to determine whether it is necessary to adjust the initial opening of the inlet guide vane valve, and if necessary, based on the target opening of the adjusted inlet guide vane valve, the load of other air compressor units in the target air compressor station except the target air compressor unit is adjusted to achieve control and regulation of the entire target air compressor station. The embodiment provided in the present application improves the response speed of the guide vane valve and the accuracy of the guide vane valve opening, reduces the probability of the target air compressor unit operating in an inefficient load range for a long time, avoids energy waste, and the embodiment provided in the present application can achieve coordinated control between the target air compressor unit and other air compressor units, thereby improving the efficiency and practicality of the target air compressor station.

[0088] See also Figure 2 , Figure 2 A structural block diagram of a control device for an air compressor station provided in an embodiment of the present application, such as Figure 2 As shown, the control device 200 of the air compressor station includes:

[0089] The first determination module 210 is used to determine the start / stop mode of the target air compressor unit based on a preset main pipe pressure threshold range of the air supply main pipe under the target air compressor station to be detected and the output pressure of the target air compressor unit under the target air compressor station in the current state.

[0090] The second determination module 220 is used to determine the initial opening of the inlet guide vane valve in the target air compressor unit based on the pipeline pressure difference between the pipeline pressure in the target air compressor unit and a preset pipeline pressure threshold when the target air compressor unit is in a non-loading and unloading mode.

[0091] The third determination module 230 is used to determine whether it is necessary to adjust the initial opening of the inlet guide vane valve based on the inlet pressure output by the inlet guide vane valve within a preset time and the pipeline outlet pressure output by the pipeline network within a preset time when the target air compressor unit is in the open mode.

[0092] The adjustment module 240 is used to adjust the load of other air compressor units except the target air compressor unit based on the adjusted target opening of the inlet guide vane valve, if necessary, so as to achieve control and regulation of the entire target air compressor station.

[0093] In one embodiment, the preset mother pipe pressure threshold range includes a preset mother pipe pressure upper limit threshold and a preset mother pipe pressure lower limit threshold. The first determination module 210 is specifically configured to:

[0094] If the output pressure of the target air compressor unit under the target air compressor station in the current state is greater than the preset main pipe pressure lower limit threshold, it is determined that the target air compressor unit enters the start mode.

[0095] If the output pressure is greater than the preset main pipe pressure upper limit threshold, it is determined that the target air compressor unit enters the stop mode.

[0096] In one embodiment, the second determining module 220 is specifically configured to:

[0097] When the target air compressor unit is in non-loading and unloading mode, based on the pipeline pressure in the target air compressor unit and the external threshold level-pipeline pressure threshold data table, determine the preset threshold level corresponding to the pipeline pressure and the preset pipeline pressure threshold under the target threshold level.

[0098] A network pressure difference between the network pressure and a preset network pressure threshold is determined.

[0099] Based on the network pressure difference, the initial opening of the inlet guide vane valve in the target air compressor unit is determined.

[0100] In one embodiment, the initial opening includes a first initial opening and a second initial opening, and based on the pipe network pressure difference, determining the initial opening of the inlet guide vane valve in the target air compressor unit includes:

[0101] If the pipeline network pressure difference is greater than the pipeline network pressure difference threshold, the inlet guide vane valve in the target air compressor unit is determined to be at the first initial opening.

[0102] If the pipeline network pressure difference is less than or equal to the pipeline network pressure difference threshold, the inlet guide vane valve in the target air compressor unit is determined to be at a second initial opening, wherein the first initial opening is greater than the second initial opening.

[0103] In one embodiment, the third determination module 230 is specifically configured to:

[0104] When the target air compressor unit is in the on mode, the pressure change value between the inlet pressure output by the inlet guide vane valve within a preset time and the pipe network outlet pressure output by the pipe network within a preset time is determined.

[0105] Based on the pressure change value and the preset pressure change threshold range, it is determined whether the initial opening of the inlet guide vane valve needs to be adjusted.

[0106] In one embodiment, the preset pressure change threshold range includes a preset pressure change upper limit value and a preset pressure change lower limit value, and based on the pressure change value and the preset pressure change threshold range, determining whether the initial opening of the inlet guide vane valve needs to be adjusted includes:

[0107] If the pressure change value is greater than the preset pressure change upper limit value within the preset time, or the pressure change value is less than the preset pressure change lower limit value within the preset time, the initial opening of the inlet guide vane valve needs to be adjusted.

[0108] If the pressure change value is less than or equal to the preset pressure change upper limit value within the preset time and the pressure change value is greater than or equal to the preset pressure change lower limit value within the preset time, there is no need to adjust the initial opening of the inlet guide vane valve.

[0109] In one embodiment, the adjustment module 240 is specifically configured to:

[0110] If the initial opening of the inlet guide vane valve needs to be adjusted, the change in the opening of the inlet guide vane valve is determined based on the historical compressed air usage data table of the target air compressor unit.

[0111] The target opening of the inlet guide vane valve is determined according to the difference between the initial opening and the changed opening of the inlet guide vane valve.

[0112] When the inlet guide vane valve is at the target opening, the other air compressor units except the target air compressor unit in the target air compressor station are controlled to reduce / increase the load.

[0113] The control device 200 of the air compressor station provided in the embodiment of the present application, compared with the prior art, determines the start-stop mode of the target air compressor unit based on the preset mother pipe pressure threshold range of the air supply mother pipe under the target air compressor station to be detected and the output pressure of the target air compressor unit under the target air compressor station in the current state, and when the target air compressor unit is in the non-loading and unloading mode, determines the initial opening of the inlet guide vane valve in the target air compressor unit based on the pipeline pressure difference between the pipeline pressure in the target air compressor unit and the preset pipeline pressure threshold, and then when the target air compressor unit is in the opening mode, determines the initial opening of the inlet guide vane valve in the target air compressor unit based on the inlet pressure output by the inlet guide vane valve within a preset time and the pipeline pressure at the preset time. The outlet pressure of the pipeline output during the interval is used to determine whether it is necessary to adjust the initial opening of the inlet guide vane valve, and if necessary, based on the target opening of the adjusted inlet guide vane valve, load adjustment is performed on the air compressor units other than the target air compressor unit in the target air compressor station to achieve control and regulation of the entire target air compressor station. The embodiment provided in the present application improves the response speed of the guide vane valve and the accuracy of the guide vane valve opening, reduces the probability of the target air compressor unit operating in an inefficient load range for a long time, avoids energy waste, and the embodiment provided in the present application can achieve coordinated control between the target air compressor unit and other air compressor units, thereby improving the efficiency and practicality of the target air compressor station.

[0114] See also Figure 3 , Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application is shown in FIG. Figure 3 As shown, the electronic device 300 includes a processor 310 , a memory 320 , and a bus 330 .

[0115] The memory 320 stores machine-readable instructions executable by the processor 310. When the electronic device 300 is running, the processor 310 communicates with the memory 320 via the bus 330. When the machine-readable instructions are executed by the processor 310, the above-mentioned Figure 1 The steps of the control method of the air compressor station in the method embodiment shown, the specific implementation method can be found in the method embodiment, and will not be repeated here.

[0116] The present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the computer program can execute the above-mentioned Figure 1 The steps of the control method of the air compressor station in the method embodiment shown, the specific implementation method can be found in the method embodiment, and will not be repeated here.

[0117] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0118] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0119] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-readable program code.

[0120] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0121] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0122] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0123] An embodiment of the present application further provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device executes a process of a control method for an air compressor station.

[0124] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable devices. The computer instruction can be stored in a computer-readable storage medium, or transmitted from a computer-readable storage medium to another computer-readable storage medium. For example, the computer instruction can be transmitted from a website site, a computer, a server or a data center by wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or a data center that includes one or more available media integration. Available media can be magnetic media, (for example, floppy disk, hard disk, tape), optical media (for example, DVD), or semiconductor media (for example, solid-state drive (SSD)) and the like.

[0125] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0126] In the several embodiments provided in the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0127] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0128] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0129] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program codes.

[0130] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0131] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0132] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

1. A control method for an air compressor station, characterized in that: The control method of the air compressor station comprises: Determine the start / stop mode of the target air compressor unit based on the preset main pipe pressure threshold range of the air supply main pipe under the target air compressor station to be detected and the output pressure of the target air compressor unit under the target air compressor station in the current state; When the target air compressor unit is in a non-loading and unloading mode, determining an initial opening of an inlet guide vane valve in the target air compressor unit based on a pipeline pressure difference between a pipeline pressure in the target air compressor unit and a preset pipeline pressure threshold; When the target air compressor unit is in the on mode, determining whether it is necessary to adjust the initial opening of the inlet guide vane valve based on the inlet pressure output by the inlet guide vane valve within a preset time and the outlet pressure of the pipeline network output by the pipeline network within a preset time; If necessary, based on the adjusted target opening of the inlet guide vane valve, load adjustment is performed on other air compressor units except the target air compressor unit to achieve control and regulation of the entire target air compressor station.

2. The control method of the air compressor station according to claim 1, characterized in that: The preset mother pipe pressure threshold range includes a preset mother pipe pressure upper limit threshold and a preset mother pipe pressure lower limit threshold. The preset mother pipe pressure threshold range of the gas supply mother pipe under the target air compressor station to be detected and the output pressure of the target air compressor unit under the target air compressor station in the current state, determine the start and stop mode of the target air compressor unit, including: If the output pressure of the target air compressor unit under the target air compressor station in the current state is greater than the preset main pipe pressure lower limit threshold, it is determined that the target air compressor unit enters the start mode; If the output pressure is greater than a preset main pipe pressure upper limit threshold, it is determined that the target air compressor unit enters a stop mode.

3. The control method of the air compressor station according to claim 1, characterized in that: The method of determining the initial opening of the inlet guide vane valve in the target air compressor unit based on the pipeline pressure difference between the pipeline pressure in the target air compressor unit and a preset pipeline pressure threshold when the target air compressor unit is in a non-loading and unloading mode comprises: When the target air compressor unit is in a non-loading and unloading mode, based on the pipeline pressure in the target air compressor unit and the external threshold level-pipeline pressure threshold data table, determine the preset threshold level corresponding to the pipeline pressure and the preset pipeline pressure threshold under the target threshold level; Determining a pipeline network pressure difference between the pipeline network pressure and a preset pipeline network pressure threshold; Based on the pipeline network pressure difference, an initial opening of the inlet guide vane valve in the target air compressor unit is determined.

4. The control method of the air compressor station according to claim 3, characterized in that: The initial opening includes a first initial opening and a second initial opening, and determining the initial opening of the inlet guide vane valve in the target air compressor unit based on the pipe network pressure difference includes: If the pipe network pressure difference is greater than the pipe network pressure difference threshold, the inlet guide vane valve in the target air compressor unit is determined to be at the first initial opening; If the pipeline network pressure difference is less than or equal to the pipeline network pressure difference threshold, the inlet guide vane valve in the target air compressor unit is determined to be at a second initial opening, wherein the first initial opening is greater than the second initial opening.

5. The control method of the air compressor station according to claim 1, characterized in that: The step of determining whether it is necessary to adjust the initial opening of the inlet guide vane valve based on the inlet pressure output by the inlet guide vane valve within a preset time and the outlet pressure of the pipeline network output by the pipeline network within a preset time when the target air compressor unit is in the on mode comprises: When the target air compressor unit is in the on mode, determining a pressure change value between an inlet pressure output by an inlet guide vane valve within a preset time and an outlet pressure of the pipeline network output by the pipeline network within a preset time; Based on the pressure change value and a preset pressure change threshold range, it is determined whether the initial opening of the inlet guide vane valve needs to be adjusted.

6. The control method of the air compressor station according to claim 5, characterized in that: The preset pressure change threshold range includes a preset pressure change upper limit value and a preset pressure change lower limit value, and determining whether the initial opening of the inlet guide vane valve needs to be adjusted based on the pressure change value and the preset pressure change threshold range includes: If the pressure change value is greater than the preset pressure change upper limit value within the preset time, or the pressure change value is less than the preset pressure change lower limit value within the preset time, it is necessary to adjust the initial opening of the inlet guide vane valve; If the pressure change value is less than or equal to the preset pressure change upper limit value within the preset time and the pressure change value is greater than or equal to the preset pressure change lower limit value within the preset time, there is no need to adjust the initial opening of the inlet guide vane valve.

7. The control method of the air compressor station according to claim 6, characterized in that: If necessary, based on the adjusted target opening of the inlet guide vane valve, load adjustment is performed on other air compressor units except the target air compressor unit, including: If the initial opening of the inlet guide vane valve needs to be adjusted, the change in the opening of the inlet guide vane valve is determined based on the historical compressed air usage data table of the target air compressor unit; determining a target opening of the inlet guide vane valve according to a difference between an initial opening of the inlet guide vane valve and the changed opening; When the inlet guide vane valve is at the target opening, the other air compressor units except the target air compressor unit of the target air compressor station are controlled to reduce / increase the load.

8. A control device for an air compressor station, characterized in that: The control device of the air compressor station comprises: A first determination module is used to determine the start / stop mode of the target air compressor unit based on a preset main pipe pressure threshold range of the air supply main pipe under the target air compressor station to be detected and the output pressure of the target air compressor unit under the target air compressor station in the current state; A second determination module is used to determine the initial opening of the inlet guide vane valve in the target air compressor unit based on the pipeline pressure difference between the pipeline pressure in the target air compressor unit and a preset pipeline pressure threshold when the target air compressor unit is in a non-loading and unloading mode; A third determination module is used to determine whether it is necessary to adjust the initial opening of the inlet guide vane valve based on the inlet pressure output by the inlet guide vane valve within a preset time and the outlet pressure of the pipeline network output by the pipeline network within a preset time when the target air compressor unit is in an open mode; The adjustment module is used to adjust the load of other air compressor units except the target air compressor unit based on the adjusted target opening of the inlet guide vane valve if necessary, so as to realize control and regulation of the entire target air compressor station.

9. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the memory via the bus, and the machine-readable instructions are executed by the processor to execute the steps of the control method of the air compressor station as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the air compressor station control method as described in any one of claims 1 to 7 are executed.

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