Gas supply method and device of process system and electronic equipment

Abstract

The embodiment of the invention provides a gas supply method and device of a process system and electronic equipment. The gas supply method and device are used for solving the problem that the quality and stability of gas supply cannot be ensured in the related technology. According to the embodiment of the invention, the gas supply pressure in the gas supply pipeline is monitored in real time through the pressure sensor and is compared with the target gas supply pressure, so that the change of the gas supply demand can be quickly responded. When the current air supply pressure is not matched with the target air supply pressure, the operation state of the air compressor can be automatically adjusted, it is ensured that the air supply pressure is the set target air supply pressure all the time, and the air supply accuracy and stability are improved. Moreover, tasks can be intelligently selected and distributed to at least one target air compressor according to the rated air supply pressure of each air compressor. The load distribution strategy based on the capacity of the air compressor can ensure that the air supply requirement is met.

Description

Technical Field

[0001] The present application relates to the technical field of process management, and in particular to a gas supply method, device and electronic equipment for a process system. Background Art

[0002] Currently, many application scenarios are highly dependent on the stable and efficient air supply support of air compressors. However, the current operation adjustment of air compressors mainly relies on manual control, which is not only inefficient, but also difficult to ensure the accuracy and timeliness of adjustments, and cannot meet the rapidly changing gas volume demand. The lack of the ability to make real-time adjustments based on actual production needs limits the maximization of overall operating efficiency.

[0003] Obviously, this traditional operating mode urgently needs to be optimized and upgraded to improve efficiency, reduce costs and ensure the quality and stability of gas supply. Summary of the invention

[0004] The embodiments of the present application provide a gas supply method, device and electronic equipment for a process system, which are used to solve the problem that the quality and stability of gas supply cannot be ensured in the related art.

[0005] In a first aspect, an embodiment of the present application provides a gas supply method for a process system, wherein the process system comprises a gas supply pipeline, a pressure sensor, an electronic device, and at least two air compressors, wherein the pressure sensor is located in the gas supply pipeline, and the gas outlet of each air compressor is respectively connected to the gas supply pipeline, and the method is applied to the electronic device, and the method comprises:

[0006] If a gas supply request is received, obtaining a target gas supply pressure corresponding to the gas supply request;

[0007] If the current air supply pressure measured by the pressure sensor is not the target air supply pressure, determining at least one target air compressor whose total rated air supply pressure is not less than the target air supply pressure according to the rated air supply pressure of each air compressor;

[0008] The rotation speed of the at least one target air compressor is controlled so that the total amount of air supply pressure of the at least one target air compressor is equal to the target air supply pressure.

[0009] In a second aspect, an embodiment of the present application further provides an air supply device for a process system, the process system comprising an air supply pipeline, a pressure sensor, an electronic device, and at least two air compressors, the pressure sensor being located in the air supply pipeline, and the air outlet of each air compressor being respectively connected to the air supply pipeline, the device comprising:

[0010] A receiving and obtaining module, configured to obtain a target gas supply pressure corresponding to a gas supply request if a gas supply request is received;

[0011] a determination module, configured to determine, if the current air supply pressure measured by the pressure sensor is not the target air supply pressure, at least one target air compressor whose total rated air supply pressure is not less than the target air supply pressure according to the rated air supply pressure of each air compressor;

[0012] The processing module is used to control the rotation speed of the at least one target air compressor so that the total amount of air supply pressure of the at least one target air compressor is the target air supply pressure.

[0013] In a third aspect, an embodiment of the present application further provides an electronic device, including:

[0014] A memory for storing program instructions;

[0015] The processor is used to call the program instructions stored in the memory, and execute the steps included in the gas supply method of any of the above-mentioned process systems according to the obtained program instructions.

[0016] In an embodiment of the present application, the process system includes an air supply pipeline, a pressure sensor, an electronic device and at least two air compressors, the pressure sensor is located in the air supply pipeline, and the air outlet of each air compressor is connected to the air supply pipeline respectively, the method is applied to the electronic device, if a gas supply request is received, the target gas supply pressure corresponding to the gas supply request is obtained; if the current gas supply pressure measured by the pressure sensor is not the target gas supply pressure, then according to the rated gas supply pressure of each air compressor, at least one target air compressor whose total rated gas supply pressure is greater than the target gas supply pressure is determined; the speed of the at least one target air compressor is controlled so that the total gas supply pressure of at least one target air compressor is the target gas supply pressure. In the embodiment of the present application, the gas supply pressure in the gas supply pipeline is monitored in real time by the pressure sensor and compared with the target gas supply pressure, so that the change of gas supply demand can be responded quickly. When it is found that the current gas supply pressure does not match the target gas supply pressure, the operating state of the air compressor can be automatically adjusted to ensure that the gas supply pressure is always the set target gas supply pressure, thereby improving the accuracy and stability of the gas supply. Moreover, it can intelligently select and assign tasks to at least one target air compressor based on the rated air supply pressure of each air compressor. This load distribution strategy based on air compressor capacity can ensure that the air supply demand is met. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1A schematic diagram of the structure of a process system provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of a process of a gas supply method for a process system provided in an embodiment of the present application;

[0020] Figure 3 A schematic diagram of a preparation process of an air compressor provided in an embodiment of the present application;

[0021] Figure 4 A schematic diagram of air supply pressure fluctuation provided in an embodiment of the present application;

[0022] Figure 5 A detailed structural diagram of a process system provided in an embodiment of the present application;

[0023] Figure 6 A structural diagram of a gas supply device of a process system provided in an embodiment of the present application;

[0024] Figure 7 A structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0026] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0027] Reference to "embodiments" in this application 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 of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0028] The words "connected", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "plurality" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship. The terms "first", "second", "third" and the like involved in this application are merely used to distinguish similar objects, and do not represent a specific ordering of objects.

[0029] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0030] In order to solve the problem in the related art that the quality and stability of gas supply cannot be ensured, the embodiments of the present application provide a gas supply method, device and electronic equipment for a process system.

[0031] The air supply method includes: if an air supply request is received, obtaining a target air supply pressure corresponding to the air supply request; if the current air supply pressure measured by the pressure sensor is not the target air supply pressure, determining at least one target air compressor whose total rated air supply pressure is greater than the target air supply pressure based on the rated air supply pressure of each air compressor; and controlling the rotation speed of the at least one target air compressor so that the total air supply pressure of the at least one target air compressor is the target air supply pressure.

[0032] Embodiment 1:

[0033] Figure 1 A schematic diagram of the structure of a process system provided in an embodiment of the present application.

[0034] The process system includes an air supply pipeline 101, a pressure sensor 102, an electronic device 103 and at least two air compressors 104. The pressure sensor 102 is located in the air supply pipeline 101, and the air outlet of each air compressor 104 is connected to the air supply pipeline 101 respectively.

[0035] Specifically, the air compressor is connected to the cold dryer, the cold dryer is connected to the gas storage tank, the gas outlet of the gas storage tank is connected to the gas supply pipeline, and the pressure sensor can be installed at the air inlet or end of the entire pipeline.

[0036] Figure 2A process schematic diagram of a gas supply method for a process system provided in an embodiment of the present application, the process comprising the following steps:

[0037] S201: If a gas supply request is received, obtaining a target gas supply pressure corresponding to the gas supply request.

[0038] The gas supply method of the process system is applied to electronic equipment, which may be a programmable logic controller (PLC) host, a PC, a server or other intelligent equipment.

[0039] In order to supply gas accurately and effectively, when there is a demand for gas supply, the business personnel can operate the equipment they use, or operate on the controllable page of the electronic device, so that the electronic device can receive the gas supply request. Specifically, the business personnel can select the gas supply pressure range or gas supply pressure of the required gas supply on the preset page of the equipment they use, or the controllable page of the electronic device. The gas supply pressure range is the target pressure range, and click a preset button, such as the "Gas Supply" button, and the electronic device can receive the gas supply request.

[0040] If the electronic device receives a gas supply request, and if the gas supply request carries a target gas supply pressure range, the target gas supply pressure range carried in the gas supply request can be obtained. In order to accurately and effectively achieve gas supply, the electronic device can determine a target gas supply pressure within the target gas supply pressure range. If the gas supply request carries a gas supply pressure, the gas supply pressure can be determined as the target gas supply pressure.

[0041] S202: If the current air supply pressure measured by the pressure sensor is not the target air supply pressure, determine at least one target air compressor whose total rated air supply pressure is greater than the target air supply pressure according to the rated air supply pressure of each air compressor.

[0042] The pressure sensor can send the measured air supply pressure in the air supply pipeline to the electronic device in real time. After determining the target air supply pressure, the electronic device can determine the current air supply pressure measured by the pressure sensor and judge whether the current air supply pressure is the target air supply pressure. If the current air supply pressure is not the target air supply pressure, the electronic device can determine at least one target air compressor whose total air supply pressure is greater than the target air supply pressure based on the pre-saved rated air supply pressure of each air compressor.

[0043] In one possible implementation, the electronic device may first obtain the air compressor with the largest rated air supply pressure among each air compressor, and determine whether the rated air supply pressure of the air compressor is less than the target air supply pressure. If the rated air supply pressure is not less than the target air supply pressure, the air compressor is determined to be the target air compressor because it can meet or exceed the required air supply pressure; if the rated air supply pressure is less than the target air supply pressure, the target air compressor is determined to be the first target air compressor because it cannot meet all requirements but is the device with the largest air supply pressure. The difference between the target air supply pressure and the rated air supply pressure is determined to evaluate the amount of air supply that needs to be supplemented. Then, the search continues among the unselected air compressors, and other air compressors are considered in turn according to the rated air supply pressure until their total rated air supply pressure can meet or exceed the target air supply pressure. In this process, it may be necessary to combine the air supply capacity of multiple air compressors to achieve the target air supply pressure.

[0044] S203: Controlling the rotation speed of the at least one target air compressor so that the total amount of air supply pressure of the at least one target air compressor is the target air supply pressure.

[0045] After determining at least one target air compressor, the electronic device can analyze the current operating status and air supply pressure of each target air compressor, and then finely increase the speed of the motor of each target air compressor in a step-by-step manner. This adjustment process will be based on a real-time feedback mechanism, that is, constantly monitoring the total amount of air supply pressure and comparing it with the target air supply pressure.

[0046] Specifically, when controlling the speed of the motor of the target air compressor, it is not limited to a simple step-by-step increase. The electronic device will also dynamically adjust the amplitude and frequency of the speed increase according to the change trend and rate of the air supply pressure. When approaching the target air supply pressure, the speed increase step size is reduced to avoid overshoot or oscillation.

[0047] Figure 3 A schematic diagram of a preparation process of an air compressor provided in an embodiment of the present application.

[0048] Depend on Figure 3 It can be seen that the air compressor obtains air through air intake, air compression, cooling and storage, and performs air processing and pressure regulation after obtaining the air, thereby achieving air supply.

[0049] Since in the embodiment of the present application, the gas supply pressure in the gas supply pipeline is monitored in real time by a pressure sensor and compared with the target gas supply pressure, it is possible to respond quickly to changes in gas supply demand. When it is found that the current gas supply pressure does not match the target gas supply pressure, the operating state of the air compressor can be automatically adjusted to ensure that the gas supply pressure is always the set target gas supply pressure, thereby improving the accuracy and stability of the gas supply. Moreover, it is possible to intelligently select and assign tasks to at least one target air compressor based on the rated gas supply pressure of each air compressor. This load distribution strategy based on the capacity of the air compressor can ensure that the gas supply demand is met.

[0050] Embodiment 2:

[0051] In order to accurately determine the target gas supply pressure, based on the above embodiment, in the embodiment of the present application, obtaining the target gas supply pressure corresponding to the gas supply request includes:

[0052] If the gas supply request carries a gas supply pressure, determining the gas supply pressure carried in the gas supply request as the target gas supply pressure;

[0053] Otherwise, according to the time range in which the current time is located, the gas supply pressure of each historical time range corresponding to the time range is determined, and according to each acquired gas supply pressure, the target gas supply pressure is determined.

[0054] In an embodiment of the present application, when a business person has a gas supply demand, the required gas supply pressure may be carried in the gas supply request. Therefore, if the gas supply request carries the gas supply pressure, the gas supply pressure carried in the gas supply request can be determined as the target gas supply pressure.

[0055] If the gas supply request does not carry the gas supply pressure, the electronic device can determine the time range of the current time. Specifically, the electronic device can locally store the first time range of peak usage, the second time range of low-peak usage, and the third time range that is not the first time range or the second time range. The electronic device can determine the gas supply pressure of each historical time range corresponding to the time range, and determine the target gas supply pressure after aggregation processing based on each gas supply pressure obtained. In one possible implementation, the average value of each gas supply pressure obtained can be determined as the target gas supply pressure.

[0056] In the embodiment of the present application, a dynamic adjustment mechanism is provided to timely adjust the target gas supply pressure when the gas supply demand suddenly changes.

[0057] Embodiment 3:

[0058] In order to accurately and effectively supply air, based on the above embodiments, in the embodiment of the present application, the step of determining at least one target air compressor whose total rated air supply pressure is greater than the target air supply pressure according to the rated air supply pressure of each air compressor includes:

[0059] Identify whether there is an air compressor whose rated air supply pressure exceeds the target air supply pressure;

[0060] If so, an air compressor whose rated air supply pressure exceeds the target air supply pressure is determined as the target air compressor;

[0061] If not, determine the minimum value of the rated air supply pressure of each air compressor, and determine the ratio of the target air supply pressure to the minimum value, and round up the integer number of air compressors corresponding to the ratio as the target air compressor.

[0062] In order to accurately and effectively supply air, the electronic device can first identify whether there is an air compressor with a rated air supply pressure greater than or equal to the target air supply pressure among all the air compressors. If such an air compressor exists, one of them is directly selected as the target air compressor.

[0063] If there is no air compressor that meets the conditions, the electronic device can perform the following steps: obtain the rated air supply pressure of each air compressor and find the smallest of these minimum values. Calculate the ratio of the target air supply pressure to the minimum rated air supply pressure. Round the ratio up to an integer, and the result obtained is the minimum integer multiple of the required number of air compressors. Finally, based on this integer result, select a corresponding number of air compressors from the existing air compressors as target air compressors. In one possible implementation, the electronic device can store and record the order in which each air compressor is turned on. Based on this information, the electronic device can intelligently select the air compressor that follows the last time the air compressor was turned on, or determine the specified number of target air compressors that should be turned on this time from the remaining air compressors based on preset priorities, efficiency, maintenance status and other factors.

[0064] Embodiment 4:

[0065] In order to accurately determine the target air compressor, based on the above embodiments, determining an air compressor whose rated air supply pressure exceeds the target air supply pressure as the target air compressor includes:

[0066] If there are multiple air compressors whose rated air supply pressure exceeds the target air supply pressure, the target air compressor is determined by the following method:

[0067] Identify the compressor with the highest energy efficiency as the target compressor; or,

[0068] Determine the air compressor with the shortest total startup time as the target air compressor; or,

[0069] The space machine whose last startup time is farthest from the current time is determined as the target air compressor.

[0070] In actual scenarios, there may be multiple air compressors that can provide the target air supply pressure, that is, there are multiple air compressors whose rated air supply pressure exceeds the target air supply pressure. In this case, the electronic device can determine the target air compressor in the following way:

[0071] In one possible implementation, the electronic device can store the energy efficiency of each air compressor, and can automatically identify and select the one with the highest energy efficiency ratio as the target air compressor among the available air compressors. This is done to maximize energy efficiency and reduce operating costs. The electronic device reduces overall energy consumption by giving priority to air compressors with higher energy efficiency. For example, variable frequency air compressors are started first because they are more energy-efficient than power frequency air compressors under partial load.

[0072] In a possible implementation, the electronic device can also compare the accumulated startup time of each air compressor and select the air compressor with the shortest total startup time as the target air compressor for this operation. This method helps to balance the usage load between the air compressors and extend the overall service life.

[0073] In one possible implementation, the electronic device can also check the last startup record of each air compressor and select the one with the longest time interval since the last startup as the target air compressor. This method helps to ensure that all air compressors have relatively balanced usage opportunities and avoids premature wear of some air compressors due to frequent startup. That is to say, in an embodiment of the present application, by balancing the operating time of each air compressor, it is possible to avoid long-term high-load operation of some air compressors, thereby reducing equipment wear and energy consumption. For example, different air compressors are started in turn to ensure that each air compressor has rest time.

[0074] Embodiment 5:

[0075] In order to determine the corresponding air supply pressure provided by the target air compressor, based on the above embodiments, in the embodiment of the present application, the control of the rotation speed of the at least one target air compressor includes:

[0076] Based on the target air supply pressure and the number of the target air compressors, the air supply pressure provided by each target air compressor is determined; and the rotation speed of the at least one target air compressor is adjusted to a rotation speed corresponding to the air supply pressure.

[0077] The electronic device can calculate and allocate the supply pressure that each target air compressor should provide based on the set target supply pressure and the selected target number of air compressors. This process may involve decomposing the target supply pressure, taking into account the rated supply capacity of each air compressor, to ensure that the total supply pressure provided by all target air compressors together can meet or exceed the target supply pressure.

[0078] In one possible implementation, the electronic device can determine the ratio of the target air supply pressure to the number of target air compressors, and dynamically adjust the air supply pressure that each target air compressor needs to provide in combination with the performance parameters and efficiency of different air compressors, so as to achieve the target air supply pressure overall. Then, the electronic device can apply the ratio to each selected target air compressor to determine the specific air supply pressure that each air compressor should provide. In this way, each target air compressor will adjust its output according to the ratio to ensure that the overall air supply pressure reaches the target air supply pressure.

[0079] After determining the air supply pressure of each target air compressor, the electronic device can obtain the speed corresponding to the air supply pressure stored for each target air compressor, and when the motor of the target air compressor is at the speed, the target air compressor can provide air with the air supply pressure, and adjust the speed of the motor of the target air compressor to the determined speed.

[0080] Embodiment 6:

[0081] In order to avoid waste of resources, based on the above embodiments, in the embodiment of the present application, the method further includes:

[0082] Determine the load rate of each currently turned on air compressor, and if the load rate of any air compressor is lower than a first threshold, turn off the air compressor;

[0083] The rotation speed of the currently turned-on air compressor is controlled so that the total amount of the air supply pressure of the currently turned-on air compressor is the target air supply pressure.

[0084] The electronic device monitors the load rate of each currently turned on air compressor. If it is found that the load rate of any air compressor is continuously lower than the preset first threshold, that is, it is determined that a certain air compressor is in an inefficient operating state, the air compressor will be automatically turned off to save energy and optimize resource utilization.

[0085] The speed of the currently turned-on air compressor is controlled so that the total air supply pressure of the currently turned-on air compressor is the target air supply pressure. The electronic device adjusts the speed of each currently turned-on air compressor respectively according to the performance parameters and efficiency of each air compressor, and makes the overall efficiency of the entire air compressor group higher.

[0086] In one possible implementation, the speed of each currently turned-on air compressor can be gradually adjusted until the efficiency of each currently turned-on air compressor reaches the optimal efficiency and the load rate is within the normal range. Specifically, the electronic device can preliminarily set the speed of each air compressor based on the preliminary deviation between the current air supply pressure and the target air supply pressure to quickly approach the target air supply pressure. After approaching the target air supply pressure, enter the fine adjustment stage, and gradually fine-tune the speed of each air compressor so that its efficiency approaches or reaches its respective optimal efficiency point. At this stage, it is necessary to consider the mutual influence between the air compressors to avoid energy waste and equipment loss caused by frequent start-stop or excessive adjustment. While keeping the total air supply pressure stable, monitor and adjust the load rate of each air compressor to ensure that they are all within a normal and relatively balanced load range, thereby extending the life of the equipment and improving the reliability and stability of the overall system.

[0087] Embodiment 7:

[0088] In order to accurately and effectively supply gas, based on the above embodiments, in the embodiment of the present application, the method further includes:

[0089] Determine the load rate of each currently turned on air compressor, if the load rate of any air compressor is higher than a second threshold, and the load rate of the air compressor is higher than the second threshold for a time period exceeding a preset time period, wherein the second threshold is higher than the first threshold, then reduce the speed of the motor of the air compressor by a preset speed;

[0090] Determine the reduced air supply pressure corresponding to lowering the preset speed; determine the rated air supply pressure is greater than the reduced air supply pressure, and the air compressor is not currently turned on; turn on the determined air compressor, and adjust the speed of the air compressor to the speed corresponding to the reduced air supply pressure.

[0091] In order to avoid the air compressor being in an overload state and to increase the service life of the air compressor, the electronic device can first evaluate the load rate of each currently turned on air compressor. If it is found that the load rate of a certain air compressor is continuously higher than the second threshold, the second threshold is higher than the first threshold used to shut down the air compressor, and this state has lasted for more than a preset time, then the air compressor is determined to be in an overload state. To alleviate this state, the electronic device will reduce the speed of the air compressor motor by a preset speed to reduce its air supply pressure.

[0092] The electronic device then calculates the reduced air supply pressure due to the reduced speed and checks whether the rated air supply pressure of the remaining air compressors is sufficient to compensate for this reduction. If there is a rated air supply pressure greater than the reduced air supply pressure and there is an air compressor that is not currently turned on, the electronic device will select a suitable unturned air compressor to start and accurately adjust its speed to a level that can compensate for the reduced air supply pressure, thereby maintaining the stability of the process system air supply. And make the overall efficiency of the entire air compressor unit higher.

[0093] In the embodiment of the present application, the air supply pressure edge control is implemented to narrow the air supply pressure fluctuation range, and the air supply pressure band is dynamically set, so that the process system can operate within a range closer to its optimal efficiency point, thereby solving the energy waste caused by large pressure fluctuations, frequent starting and stopping of the air compressor, and loading and unloading problems, thereby reducing overall energy consumption.

[0094] Figure 4 A schematic diagram of air supply pressure fluctuation provided in an embodiment of the present application.

[0095] Depend on Figure 4 It can be seen that the fluctuation range of the gas supply pressure in the original control method is relatively large, and the fluctuation range of the gas supply pressure is relatively small by adopting the intelligent group control method provided in the embodiment of the present application.

[0096] Embodiment 8:

[0097] In order to accurately and effectively supply gas, based on the above embodiments, in the embodiment of the present application, the method further includes:

[0098] If any of the currently turned-on air compressors fails, the standby air compressor corresponding to the air compressor is turned on, and the speed of the standby air compressor is adjusted to the speed corresponding to the air compressor.

[0099] In order to accurately and effectively supply air, electronic equipment can monitor the operating status of the air compressor in real time. Once it is determined that a currently turned-on air compressor has a fault or abnormality, the backup plan can be immediately activated to turn on the backup air compressor corresponding to the air compressor and adjust the speed of the backup air compressor accordingly. Specifically, the speed of the motor of the backup air compressor can be adjusted to the speed of the motor of the faulty air compressor to ensure the continuity and stability of the process system's air supply. In addition, for air compressors that frequently fail, maintenance and repairs should be carried out in a timely manner to reduce the occurrence of future failures and improve the reliability and efficiency of the overall air supply system.

[0100] Because in the embodiment of the present application, when the air compressor fails, the electronic device can quickly switch to the backup air compressor to avoid increased energy consumption and production interruption caused by the failure. For example, the status of the air compressor is monitored in real time, and once a failure is detected, it is immediately switched to the backup machine. Moreover, the electronic device can intelligently switch the main machine and the backup machine according to actual needs and the operating status of the air compressor to ensure that it can operate with optimal energy efficiency under different load conditions. For example, a low-power air compressor is used at low load, and a high-power air compressor is switched at high load.

[0101] Figure 5 A detailed structural diagram of a process system provided in an embodiment of the present application.

[0102] Depend on Figure 5It can be seen that the process system includes PLC and gateway. PLC is connected to multiple air compressors through Ethernet, serial port and cable signals, and PLC will receive signals from flow meters, pressure sensors, temperature sensors and electric energy meters installed in the pipeline, and PLC is connected to the control cabinet. Business personnel can send signals to the air compressor to control components such as air compressors in the process system based on the control cabinet. The flow meter can measure the flow rate of the air supply, and the temperature sensor can measure the temperature.

[0103] The embodiment of the present application is equivalent to the transformation of an air compressor station. It is necessary to add a set of air compressor group control system control cabinets and supporting electric energy meters, flow meters, pressure sensors, temperature sensors and other instrument devices on site. The operator can select automatic control from the touch screen of the group control system. The system will dynamically adjust the loading rate and start and stop of each air compressor according to the collected parameters such as pipeline pressure, loading time, fault signal, etc., to achieve the overall closed-loop control of multiple air compressors and the stability of gas supply pressure, and achieve efficient operation of air compressors on the premise of meeting production needs. This intelligent control system can realize the air compressor station with few people or no one on duty, optimize the start and stop sequence, and achieve energy saving and consumption reduction. Add a set of air compressor group control system control cabinets, two sets of gas supply pipeline flow meters, two sets of electric energy meters, and a set of dew point meters on site. The operator can select automatic control on the touch screen of the group control system. The system will dynamically adjust the loading rate and start and stop of each air compressor according to pipeline pressure and loading time, to achieve the overall closed-loop control of multiple air compressors, and achieve efficient operation of air compressors on the premise of meeting production needs.

[0104] In an embodiment of the present application, the optimal operating order of the air compressor is selected by combining multiple dimensions such as operating energy consumption, time balance, fault exit, and master-standby machine switching, so as to implement an air compressor priority sorting algorithm, minimize energy consumption, and improve the overall economic benefits of the air compression station.

[0105] The embodiment of the present application realizes the monitoring and automatic adjustment of the operating status of the air compressor station equipment. When the gas consumption of the factory changes, the process system promptly adjusts the gas supply pressure, optimizes the air compressor operation strategy, and balances the operating time of each air compressor. It not only meets the requirements of stable production operation, but also provides early warning and pre-analysis for possible faults, improves the efficiency of operation and maintenance, reduces operation and maintenance costs, and extends the life of the equipment. Through a stable pressure control algorithm combined with the optimal operation sorting algorithm of the air compressor, the best operation matching of the air compressor is achieved, achieving energy saving and consumption reduction. Through the investment in the air compressor station group control system, quasi-unmanned operation has been achieved, which effectively reduces the dependence on personnel and saves 50% of manpower.

[0106] Embodiment 9:

[0107] Based on the same inventive concept, the present application embodiment provides a gas supply device for a process system, please refer to Figure 6 , the device comprises:

[0108] A receiving and obtaining module 601 is used to obtain a target gas supply pressure corresponding to a gas supply request if a gas supply request is received;

[0109] A determination module 602 is configured to determine, if the current air supply pressure measured by the pressure sensor is not the target air supply pressure, at least one target air compressor whose total rated air supply pressure is not less than the target air supply pressure according to the rated air supply pressure of each air compressor;

[0110] The processing module 603 is used to control the rotation speed of the at least one target air compressor so that the total amount of the air supply pressure of the at least one target air compressor is the target air supply pressure.

[0111] In one possible implementation, the determination module 602 is specifically used to determine the gas supply pressure carried in the gas supply request as the target gas supply pressure if the gas supply request carries the gas supply pressure; otherwise, based on the time range in which the current time is located, determine the gas supply pressure of each historical time range corresponding to the time range, and determine the target gas supply pressure based on each gas supply pressure obtained.

[0112] In one possible implementation, the determination module 602 is specifically used to identify whether there is an air compressor whose rated air supply pressure is not less than the target air supply pressure; if so, an air compressor whose rated air supply pressure is not less than the target air supply pressure is determined as the target air compressor; if not, the minimum value of the rated air supply pressure of each air compressor is determined, and the ratio of the target air supply pressure to the minimum rated air supply pressure is determined, and the integer number of air compressors corresponding to the ratio is rounded up as the target air compressor.

[0113] In one possible implementation, the determination module 602 is specifically used to determine the target air compressor in the following manner if there are multiple air compressors whose rated air supply pressures are not less than the target air supply pressure: determine the air compressor with the highest energy efficiency as the target air compressor; or, determine the air compressor with the shortest total startup time as the target air compressor; or, determine the air compressor whose last startup time is farthest from the current time as the target air compressor.

[0114] In a possible implementation, the processing module 603 is specifically used to determine the air supply pressure provided by each target air compressor based on the target air supply pressure and the number of target air compressors; and adjust the rotation speed of at least one target air compressor to a rotation speed corresponding to the air supply pressure.

[0115] In a possible implementation, the processing module 603 is also used to determine the load rate of each air compressor that is currently turned on. If the load rate of any air compressor is lower than a first threshold, the air compressor is turned off; and the speed of the currently turned on air compressor is controlled so that the total air supply pressure of the currently turned on air compressor is the target air supply pressure.

[0116] In a possible implementation, the processing module 603 is also used to determine the load rate of each air compressor that is currently turned on. If the load rate of any air compressor is higher than a second threshold, and the time when the load rate of the air compressor is higher than the second threshold exceeds a preset time, wherein the second threshold is higher than the first threshold, the speed of the motor of the air compressor is reduced by a preset speed; the reduced air supply pressure corresponding to the reduction in the preset speed is determined; the rated air supply pressure is determined to be not less than the reduced air supply pressure, and the air compressor is not currently turned on; the determined air compressor is turned on, and the speed of the air compressor is adjusted to the speed corresponding to the reduced air supply pressure.

[0117] In a possible implementation, the processing module 603 is further configured to start a standby air compressor corresponding to any currently turned-on air compressor if a failure occurs to the air compressor, and adjust the rotation speed of the standby air compressor to the rotation speed corresponding to the air compressor.

[0118] Embodiment 10:

[0119] Based on the same inventive concept, the embodiment of the present application provides an electronic device, which can realize the gas supply function of the above process system, please refer to Figure 7 The device includes a processor 701, a memory 703 and a communication bus 704, wherein the processor 701, the communication interface 702 and the memory 703 communicate with each other through the communication bus 704.

[0120] The memory 703 stores a computer program. When the program is executed by the processor 701, the processor 701 performs the following steps:

[0121] If a gas supply request is received, obtaining a target gas supply pressure corresponding to the gas supply request;

[0122] If the current air supply pressure measured by the pressure sensor is not the target air supply pressure, determining at least one target air compressor whose total rated air supply pressure is not less than the target air supply pressure according to the rated air supply pressure of each air compressor;

[0123] The rotation speed of the at least one target air compressor is controlled so that the total amount of air supply pressure of the at least one target air compressor is equal to the target air supply pressure.

[0124] In a possible implementation manner, obtaining the target gas supply pressure corresponding to the gas supply request includes:

[0125] If the gas supply request carries a gas supply pressure, determining the gas supply pressure carried in the gas supply request as the target gas supply pressure;

[0126] Otherwise, according to the time range in which the current time is located, the gas supply pressure of each historical time range corresponding to the time range is determined, and according to each acquired gas supply pressure, the target gas supply pressure is determined.

[0127] In a possible implementation manner, determining, based on the rated air supply pressure of each air compressor, at least one target air compressor whose total rated air supply pressure is not less than the target air supply pressure includes:

[0128] Identify whether there is an air compressor whose rated air supply pressure is not less than the target air supply pressure;

[0129] If so, an air compressor whose rated air supply pressure is not less than the target air supply pressure is determined as the target air compressor;

[0130] If not, determine the minimum value of the rated air supply pressure of each air compressor, and determine the target air supply pressure and the minimum value of the rated air supply pressure as a ratio, and round up the ratio to an integer number of air compressors corresponding to the ratio as the target air compressor.

[0131] In a possible implementation manner, determining an air compressor whose rated air supply pressure is not less than the target air supply pressure as the target air compressor includes:

[0132] If there are multiple air compressors whose rated air supply pressure is not less than the target air supply pressure, the target air compressor is determined by the following method:

[0133] Identify the compressor with the highest energy efficiency as the target compressor; or,

[0134] Determine the air compressor with the shortest total startup time as the target air compressor; or,

[0135] The space machine whose last startup time is farthest from the current time is determined as the target air compressor.

[0136] In a possible implementation manner, controlling the rotation speed of the at least one target air compressor includes:

[0137] Based on the target air supply pressure and the number of the target air compressors, the air supply pressure provided by each target air compressor is determined; and the rotation speed of the at least one target air compressor is adjusted to a rotation speed corresponding to the air supply pressure.

[0138] In a possible implementation, the method further includes:

[0139] Determine the load rate of each currently turned on air compressor, and if the load rate of any air compressor is lower than a first threshold, turn off the air compressor;

[0140] The rotation speed of the currently turned-on air compressor is controlled so that the total amount of the air supply pressure of the currently turned-on air compressor is the target air supply pressure.

[0141] In a possible implementation, the method further includes:

[0142] Determine the load rate of each currently turned on air compressor, if the load rate of any air compressor is higher than a second threshold, and the load rate of the air compressor is higher than the second threshold for a time period exceeding a preset time period, wherein the second threshold is higher than the first threshold, then reduce the speed of the motor of the air compressor by a preset speed;

[0143] Determine the reduced air supply pressure corresponding to lowering the preset speed; determine that the rated air supply pressure is not less than the reduced air supply pressure and the air compressor is not currently turned on; turn on the determined air compressor, and adjust the speed of the air compressor to at least the speed corresponding to the reduced air supply pressure, and make the overall efficiency of the entire air compressor unit higher.

[0144] In a possible implementation, the method further includes:

[0145] If any of the currently turned-on air compressors fails, the standby air compressor corresponding to the air compressor is turned on, and the speed of the standby air compressor is adjusted to the speed corresponding to the air compressor.

[0146] The communication bus mentioned in the above server can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0147] The communication interface 702 is used for communication between the electronic device and other devices.

[0148] The memory may include a random access memory (RAM) or a non-volatile memory (NVM), such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

[0149] The above-mentioned processor can be a general-purpose processor, including a central processing unit, a network processor (Network Processor, NP), etc.; it can also be a digital signal processing processor (Digital Signal Processing, DSP), an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc.

[0150] Embodiment 11:

[0151] Based on the same inventive concept, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program executable by an electronic device. When the program runs on the electronic device, the electronic device implements the following steps when executing:

[0152] If a gas supply request is received, obtaining a target gas supply pressure corresponding to the gas supply request;

[0153] If the current air supply pressure measured by the pressure sensor is not the target air supply pressure, determining at least one target air compressor whose total rated air supply pressure is not less than the target air supply pressure according to the rated air supply pressure of each air compressor;

[0154] The rotation speed of the at least one target air compressor is controlled so that the total amount of air supply pressure of the at least one target air compressor is equal to the target air supply pressure.

[0155] In a possible implementation manner, obtaining the target gas supply pressure corresponding to the gas supply request includes:

[0156] If the gas supply request carries a gas supply pressure, determining the gas supply pressure carried in the gas supply request as the target gas supply pressure;

[0157] Otherwise, according to the time range in which the current time is located, the gas supply pressure of each historical time range corresponding to the time range is determined, and according to each acquired gas supply pressure, the target gas supply pressure is determined.

[0158] In a possible implementation manner, determining, based on the rated air supply pressure of each air compressor, at least one target air compressor whose total rated air supply pressure is not less than the target air supply pressure includes:

[0159] Identify whether there is an air compressor whose rated air supply pressure is not less than the target air supply pressure;

[0160] If so, an air compressor whose rated air supply pressure is not less than the target air supply pressure is determined as the target air compressor;

[0161] If not, determine the minimum value of the rated air supply pressure of each air compressor, and determine the target air supply pressure and the minimum value of the rated air supply pressure as a ratio, and round up the ratio to an integer number of air compressors corresponding to the ratio as the target air compressor.

[0162] In a possible implementation manner, determining an air compressor whose rated air supply pressure is not less than the target air supply pressure as the target air compressor includes:

[0163] If there are multiple air compressors whose rated air supply pressure is not less than the target air supply pressure, the target air compressor is determined by the following method:

[0164] Identify the compressor with the highest energy efficiency as the target compressor; or,

[0165] Determine the air compressor with the shortest total startup time as the target air compressor; or,

[0166] The space machine whose last startup time is farthest from the current time is determined as the target air compressor.

[0167] In a possible implementation manner, controlling the rotation speed of the at least one target air compressor includes:

[0168] Based on the target air supply pressure and the number of the target air compressors, the air supply pressure provided by each target air compressor is determined; and the rotation speed of the at least one target air compressor is adjusted to a rotation speed corresponding to the air supply pressure.

[0169] In a possible implementation, the method further includes:

[0170] Determine the load rate of each currently turned on air compressor, and if the load rate of any air compressor is lower than a first threshold, turn off the air compressor;

[0171] The rotation speed of the currently turned-on air compressor is controlled so that the total amount of the air supply pressure of the currently turned-on air compressor is the target air supply pressure.

[0172] In a possible implementation, the method further includes:

[0173] Determine the load rate of each currently turned on air compressor, if the load rate of any air compressor is higher than a second threshold, and the load rate of the air compressor is higher than the second threshold for a time period exceeding a preset time period, wherein the second threshold is higher than the first threshold, then reduce the speed of the motor of the air compressor by a preset speed;

[0174] Determine the reduced air supply pressure corresponding to lowering the preset speed; determine that the rated air supply pressure is not less than the reduced air supply pressure and the air compressor is not currently turned on; turn on the determined air compressor, and adjust the speed of the air compressor to at least the speed corresponding to the reduced air supply pressure, and make the overall efficiency of the entire air compressor unit higher.

[0175] In a possible implementation, the method further includes:

[0176] If any of the currently turned-on air compressors fails, the standby air compressor corresponding to the air compressor is turned on, and the speed of the standby air compressor is adjusted to the speed corresponding to the air compressor.

[0177] 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-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0178] 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 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 processor, or other programmable data processing device to produce 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.

[0179] 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.

[0180] 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.

[0181] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A gas supply method for a process system, characterized in that: The process system comprises an air supply pipeline, a pressure sensor, an electronic device and at least two air compressors, wherein the pressure sensor is located in the air supply pipeline, and the air outlet of each air compressor is respectively connected to the air supply pipeline. The method is applied to the electronic device, and the method comprises: If a gas supply request is received, obtaining a target gas supply pressure corresponding to the gas supply request; If the current air supply pressure measured by the pressure sensor is not the target air supply pressure, determining at least one target air compressor whose total rated air supply pressure is not less than the target air supply pressure according to the rated air supply pressure of each air compressor; The rotation speed of the at least one target air compressor is controlled so that the total amount of air supply pressure of the at least one target air compressor is equal to the target air supply pressure.

2. The method according to claim 1, characterized in that The obtaining of the target gas supply pressure corresponding to the gas supply request includes: If the gas supply request carries a gas supply pressure, determining the gas supply pressure carried in the gas supply request as the target gas supply pressure; Otherwise, according to the time range in which the current time is located, the gas supply pressure of each historical time range corresponding to the time range is determined, and according to each acquired gas supply pressure, the target gas supply pressure is determined.

3. The method according to claim 1, characterized in that The step of determining, based on the rated air supply pressure of each air compressor, at least one target air compressor whose total rated air supply pressure is not less than the target air supply pressure comprises: Identify whether there is an air compressor whose rated air supply pressure is not less than the target air supply pressure; If so, an air compressor whose rated air supply pressure is not less than the target air supply pressure is determined as the target air compressor; If not, determine the minimum value of the rated air supply pressure of each air compressor, and determine the ratio of the target air supply pressure to the minimum value, and round up the integer number of air compressors corresponding to the ratio as the target air compressor.

4. The method according to claim 3, characterized in that The step of determining an air compressor having a rated air supply pressure not less than the target air supply pressure as the target air compressor comprises: If there are multiple air compressors whose rated air supply pressure is not less than the target air supply pressure, the target air compressor is determined by the following method: Identify the compressor with the highest energy efficiency as the target compressor; or, Determine the air compressor with the shortest total startup time as the target air compressor; or, The space machine whose last startup time is farthest from the current time is determined as the target air compressor.

5. The method according to claim 1, characterized in that The controlling the rotation speed of the at least one target air compressor comprises: Based on the target air supply pressure and the number of the target air compressors, the air supply pressure provided by each target air compressor is determined; and the rotation speed of the at least one target air compressor is adjusted to a rotation speed corresponding to the air supply pressure.

6. The method according to any one of claims 1 to 5, characterized in that: The method further comprises: Determine the load rate of each currently turned on air compressor, and if the load rate of any air compressor is lower than a first threshold, turn off the air compressor; The rotation speed of the currently turned-on air compressor is controlled so that the total amount of the air supply pressure of the currently turned-on air compressor is the target air supply pressure.

7. The method according to any one of claims 1 to 5, characterized in that: The method further comprises: Determine the load rate of each currently turned on air compressor, if the load rate of any air compressor is higher than a second threshold, and the load rate of the air compressor is higher than the second threshold for a time period exceeding a preset time period, wherein the second threshold is higher than the first threshold, then reduce the speed of the motor of the air compressor by a preset speed; Determine the reduced air supply pressure corresponding to lowering the preset speed; determine the rated air supply pressure is not less than the reduced air supply pressure, and the air compressor is not currently turned on; turn on the determined air compressor, and adjust the speed of the air compressor to the speed corresponding to the reduced air supply pressure.

8. The method according to claim 1, characterized in that The method further comprises: If any of the currently turned-on air compressors fails, the standby air compressor corresponding to the air compressor is turned on, and the speed of the standby air compressor is adjusted to the speed corresponding to the air compressor.

9. A gas supply device for a process system, characterized in that: The process system comprises an air supply pipeline, a pressure sensor, an electronic device and at least two air compressors, wherein the pressure sensor is located in the air supply pipeline, and the air outlet of each air compressor is respectively connected to the air supply pipeline, and the device comprises: A receiving and obtaining module, configured to obtain a target gas supply pressure corresponding to a gas supply request if a gas supply request is received; a determination module, configured to determine, if the current air supply pressure measured by the pressure sensor is not the target air supply pressure, at least one target air compressor whose total rated air supply pressure is not less than the target air supply pressure according to the rated air supply pressure of each air compressor; The processing module is used to control the rotation speed of the at least one target air compressor so that the total amount of air supply pressure of the at least one target air compressor is the target air supply pressure.

10. An electronic device, characterized in that: include: A memory for storing program instructions; A processor is used to call the program instructions stored in the memory, and execute the steps included in the gas supply method of the process system described in any one of claims 1 to 8 according to the obtained program instructions.

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