Control method and device of air compressor system, electronic equipment and storage medium

Abstract

The invention discloses an air compressor system control method and device, electronic equipment and a storage medium, and the method comprises the steps that when it is detected that a system starting control is triggered, at least one to-be-started air compressor in a target air compressor system is determined according to a to-be-used mode currently corresponding to the target air compressor system; for each to-be-started air compressor, based on at least one to-be-used detection condition, carrying out equipment state detection on at least one associated equipment of the current to-be-started air compressor to obtain a state detection result corresponding to each associated equipment; and when the state detection results corresponding to the associated equipment of all the to-be-started air compressors are detection passing and the system pressure of the target air compressor system meets the preset system pressure, the target air compressor system is started. The air compressor equipment in the air compressor system is automatically started, and the use of the air compressor equipment is reasonably optimized to prolong the service life of the air compressor equipment while the air supply amount in the air compressor system is guaranteed.

Description

Technical Field

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

[0002] With the development of modern factories, there is an increasing demand for intelligent and automated control of air compressor systems.

[0003] At present, the control of the air compressor system is mainly based on manual control. However, since the air compressor system usually contains multiple air compressor devices, and the models of each air compressor device are different, the air supply in the air compressor system may be insufficient due to subjective judgment during the manual control process, as well as unreasonable use of the air compressor equipment, which may lead to the problem of shortening the service life of the air compressor equipment.

[0004] In order to solve the above problems, it is necessary to improve the control method of the air compressor system. Summary of the invention

[0005] The present invention provides a control method, device, electronic device and storage medium for an air compressor system to solve the problems in the prior art of manually starting the air compressor equipment in the air compressor system, which are highly subjective, and may result in insufficient air supply in the air compressor system and unreasonable allocation of the air compressor equipment, resulting in a shortened service life of the air compressor equipment.

[0006] In a first aspect, an embodiment of the present invention provides a control method for an air compressor system, comprising:

[0007] When it is detected that the system startup control is triggered, at least one air compressor to be started in the target air compressor system is determined according to the standby mode currently corresponding to the target air compressor system; wherein the standby mode is a time optimization mode or an equipment balancing mode;

[0008] For each air compressor to be started, based on at least one detection condition to be used, perform equipment status detection on at least one associated device of the current air compressor to be started, and obtain a status detection result corresponding to each associated device; wherein the associated devices include a water valve, a cooling tower fan, and a cooling water pump;

[0009] When the status detection results corresponding to the associated devices of all the air compressors to be started are all detected as passed, and the system pressure of the target air compressor system meets the preset system pressure, the target air compressor system is started.

[0010] In a second aspect, an embodiment of the present invention further provides a control device for an air compressor system, comprising:

[0011] When it is detected that the system startup control is triggered, at least one air compressor to be started in the target air compressor system is determined according to the standby mode currently corresponding to the target air compressor system; wherein the standby mode is a time optimization mode or an equipment balancing mode;

[0012] For each air compressor to be started, based on at least one detection condition to be used, perform equipment status detection on at least one associated device of the current air compressor to be started, and obtain a status detection result corresponding to each associated device; wherein the associated devices include a water valve, a cooling tower fan, and a cooling water pump;

[0013] When the status detection results corresponding to the associated devices of all the air compressors to be started are all detected as passed, and the system pressure of the target air compressor system meets the preset system pressure, the target air compressor system is started.

[0014] In a third aspect, an embodiment of the present invention further provides a PLC controller, comprising:

[0015] At least one central processing unit; and a control module connected to the at least one central processing unit;

[0016] The control module includes one or more power supplies, signal modules and corresponding process modules and communication modules, so that the PLC controller can execute the control method of the air compressor system described in any embodiment.

[0017] The technical solution of the embodiment of the present invention is to determine at least one air compressor to be started in the target air compressor system according to the current standby mode corresponding to the target air compressor system when the system startup control is detected to be triggered; for each air compressor to be started, the device state detection is performed on at least one associated device of the current air compressor to be started based on at least one standby detection condition to obtain the state detection result corresponding to each associated device; when the state detection results corresponding to the associated devices of all the air compressors to be started are all detected to pass, and the system pressure of the target air compressor system meets the preset system pressure, the target air compressor system is started. In this technical solution, before the target air compressor system is controlled by the system, the standby mode corresponding to the target air compressor system is first determined to determine at least one air compressor to be started from at least one air compressor device of the target air compressor system according to the standby function mode. Further, when starting each air compressor device to be started, it is also necessary to automatically detect whether the device state of at least one associated device connected to each air compressor to be started can support the start of the air compressor to be started, and only when the device states of all the associated devices of the air compressors to be started are detected to pass, the corresponding air compressor to be started is started. On this basis, whether to start the target air compressor is further determined according to whether the system pressure of the target air compressor system meets the preset system pressure. The problem that the manual start of the air compressor equipment in the air compressor system in the prior art is highly subjective, and there may be insufficient air supply in the air compressor system and unreasonable allocation of the air compressor equipment, which shortens the service life of the air compressor equipment. By automatically judging the equipment status of each air compressor equipment in the target air compressor, the air compressor equipment in the air compressor system is started objectively and reasonably, and the air compressor equipment in the air compressor system is started automatically. While ensuring the air supply in the air compressor system, the use of the air compressor equipment is reasonably optimized to extend the service life of the air compressor equipment.

[0018] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 is a flow chart of a control method for an air compressor system provided according to Embodiment 1 of the present invention;

[0021] Figure 2 is a flow chart of a control method for an air compressor system provided according to a second embodiment of the present invention;

[0022] Figure 3 1 is a schematic diagram of the structure of a control device for an air compressor system provided according to Embodiment 3 of the present invention. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only an embodiment of a part of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention. The acquisition, transmission, storage, use, and processing of data in the technical scheme of this application are in compliance with the relevant provisions of national laws and regulations. It should be noted that in the embodiments of this application, certain software, components, or models that already exist in the industry may be mentioned. They should be considered as exemplary. Their purpose is only to illustrate the feasibility of the implementation of the technical scheme of this application, but it does not mean that the applicant has or will necessarily use the scheme.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0025] Embodiment 1

[0026] Figure 1 A flow chart of a control method for an air compressor system is provided for the first embodiment of the present invention. This embodiment is applicable to the situation where the air compressor equipment in the air compressor system is automatically controlled according to the equipment status of each air compressor equipment in the air compressor system and the system pressure. The method can be executed by a control device of the air compressor system. The control device of the air compressor system can be implemented in the form of hardware and / or software. The control device of the air compressor system can be configured in a computing device that can execute the control method of the air compressor system.

[0027] like Figure 1 As shown, the method includes:

[0028] S110: When it is detected that the system startup control is triggered, at least one air compressor to be started in the target air compressor system is determined according to the standby mode currently corresponding to the target air compressor system.

[0029] Among them, the system startup control refers to a control button or control area used to control the startup of the target air compressor system. The target air compressor system can be understood as a mechanical equipment system that can compress gas into high-pressure gas. The target air compressor system includes at least one air compressor device and associated equipment connected to each air compressor device. Among them, the associated equipment includes water valves, cooling tower fans, cooling water pumps and other equipment connected to the air compressor equipment. The waiting mode refers to the functional mode of the target air compressor system during use. In this technical solution, the waiting mode includes a time optimization mode or an equipment balancing mode. The so-called time optimization mode refers to a mode in which the air compressor device with a shorter running time is preferentially used according to the length of the running time of each air compressor device in the target air compressor system. The so-called equipment balancing mode refers to a mode of the air compressor device to be used that is set according to the size of the air supply volume of each air compressor device in the target air compressor system. The air compressor to be started can be understood as the air compressor device that needs to be used after the target air compressor system is started. The air compressor device to be started can be a fixed frequency air compressor device or a variable frequency air compressor device. For example, the target air compressor system includes air compressor 1, air compressor 2, air compressor 3 and air compressor 4. When the standby mode is the time optimization mode, air compressor 1 and air compressor 2 are determined as the air compressors to be started according to the running time of each air compressor.

[0030] In practical applications, the target air compressor system usually includes one or more air compressor devices. Depending on the actual situation, one or more of the air compressor devices need to be turned on when the target air compressor system is used. In this technical solution, in order to facilitate the operation of starting the target air compressor system, an automatic startup function is set for the target air compressor system to achieve that when it is detected that the system startup control is triggered, at least one air compressor to be started in the target air compressor system is determined according to the current corresponding standby mode of the target air compressor system.

[0031] Optionally, at least one air compressor to be started in the target air compressor system is determined based on the standby mode currently corresponding to the target air compressor system, including: based on the mode selection control in the target display panel, determining the standby mode corresponding to the target air compressor system; if the standby mode is a time optimization mode, determining the number of air compressors that currently need to be started, and determining a corresponding number of air compressors to be started from at least one air compressor in the target air compressor system based on the running time of each air compressor; if the standby mode is an equipment balancing mode, determining at least one air compressor to be started in the target air compressor system based on the current date.

[0032] The target display panel can be understood as a control panel for selecting a standby mode for the target air compressor system. The running time can be understood as the total running time of the air compressor device from the first operation to the current moment, or it can also be the running time of the air compressor device during the current operation. The specific setting can be based on actual conditions, and the running time is not specifically limited in this technical solution.

[0033] Specifically, before starting the target air compressor system, it is usually necessary to first determine the standby mode that the target air compressor system needs to use. Therefore, in the present technical solution, at least one functional mode can be set in the target control panel to allow the user to select the standby mode.

[0034] Exemplarily, a time optimization mode and an equipment balancing mode are set in the target control panel. If it is detected that the time optimization mode is triggered, the current standby mode corresponding to the target air compressor system is determined to be the time optimization mode. Furthermore, in order to extend the balanced operation of each air compressor device in the target air compressor system and extend the service life of the equipment, the number of air compressors of the air compressor equipment that currently needs to be started is determined according to actual needs, and according to the operating time of each air compressor device, a corresponding number of air compressor devices with a shorter operating time are preferentially selected from at least one air compressor device as the air compressor devices to be started.

[0035] Exemplarily, if it is detected that the mode selection control corresponding to the device balance mode is triggered, it is determined that the current waiting mode corresponding to the target air compressor system is the device balance mode. Among them, in the present technical solution, the device balance mode can be refined into a large machine mode, a small machine mode and a large and small machine combination mode. The so-called large machine mode means that the air compressors to be started are all air compressor devices with an air supply greater than the basic air supply, the so-called small machine mode means that the air compressor devices to be started are all air compressor devices with an air supply less than the basic air supply, and the so-called large and small machine combination mode refers to a mode in which the large machine mode and the small machine mode are used in combination, that is, when the device balance mode is the large and small machine combination mode, the air compressors to be started in the target air compressor system have both air compressor devices with an air supply greater than the basic air supply and air compressor devices with an air supply less than the basic air supply. Among them, the basic air supply refers to a pre-set air supply threshold. On this basis, after determining that the waiting mode is the device balance mode, the functional mode of the target air compressor system can be further determined according to the current date. For example, it is preset that large machine mode is given priority on single days, and small machine mode is given priority on even days. Take the target air compressor system including 4 air compressor devices as an example, among which air compressor No. 4 is a large machine device, air compressor No. 1 is a small machine device, and air compressor No. 1 and air compressor No. 4 are both variable frequency air compressor devices, and air compressor No. 2 and air compressor No. 3 are fixed frequency air compressor devices. When the equipment balancing mode is small machine mode, if the variable frequency air compressor devices are not running, air compressor No. 1 will be prioritized as the air compressor to be started. If air compressor No. 1 cannot be started, air compressor No. 4 will be used as the air compressor to be started. If there is no variable frequency air compressor that can be loaded (that is, both air compressor No. 1 and air compressor No. 4 cannot be started), the industrial frequency air compressor is determined (the industrial frequency machine is optimized according to time, air compressor No. 2 and air compressor No. 3 are prioritized); if a variable frequency air compressor is already running, the fixed frequency air compressors No. 2 and No. 3 are used as the air compressors to be started.

[0036] If the equipment balancing mode is the large machine mode, if air compressor No. 4 is not running, air compressor No. 4 will be prioritized. When air compressor No. 4 cannot be started, air compressor No. 1 will be used as the air compressor to be started. If there is no variable frequency air compressor that can be loaded (that is, air compressor No. 1 and air compressor No. 4 cannot be started), the industrial frequency air compressor will be determined (the industrial frequency machine is optimized according to time, air compressor No. 2 and air compressor No. 3 are prioritized); if air compressor No. 4 is already running, the fixed frequency air compressors No. 2 and No. 3 will be used as the air compressors to be started.

[0037] It should be noted that the standby mode corresponding to the target air compressor is usually a functional mode for a period of time. For example, if the mode setting cycle is one week, the standby mode is set once a week. If the standby mode is a large machine mode or a small machine mode, it means that the large machine mode or the small machine mode will be used continuously in the next week. If the equipment balancing mode is a large and small machine combination mode, it means that for a period of time, according to the change of the current date, the large machine mode and the small machine mode are used alternately. For example, in the current week, the large machine mode is used on single days and the small machine mode is used on even days until the standby mode corresponding to the target air compressor system is reset.

[0038] S120: For each air compressor to be started, perform device status detection on at least one associated device of the air compressor to be started based on at least one detection condition to be used, and obtain a status detection result corresponding to each associated device.

[0039] The associated equipment includes at least one of a water valve, a cooling tower fan and a cooling water pump. The detection condition to be used can be understood as performing a device status detection on each associated equipment to determine whether the associated equipment meets the detection condition for starting the target air compressor system. The status detection result includes a detection pass or a detection fail.

[0040] In actual applications, before starting each air compressor to be started, it is necessary to detect the device status of the associated devices connected to the air compressor to be started, and determine whether the corresponding air compressor to be started can be started according to the device status of each associated device.

[0041] Optionally, based on at least one detection condition to be used, an equipment status detection is performed on at least one associated device of the air compressor to be started, and a status detection result corresponding to each associated device is obtained, including: determining the equipment startup sequence of at least one associated device in the target air compressor system; for each associated device, detecting the equipment status of the current associated device based on the detection condition to be used corresponding to the current associated device, and obtaining the current detection result; if the current detection result is a pass, determining the next associated device corresponding to the current associated device according to the equipment startup sequence, and performing equipment status detection on the next associated device based on the detection condition to be used corresponding to the next associated device, until the equipment status detection of all associated devices is completed, and a status detection result corresponding to each associated device is obtained.

[0042] Exemplarily, when it is detected that the power button of the target air compressor system is triggered, each air compressor to be started and its corresponding water valve can form an air compressor group, and the cooling tower fan and the water valve can form a cooling tower group. At this time, it is determined whether the water valve is in an open state according to the to-be-used detection condition corresponding to the water valve. If so, the cooling tower fan is further detected based on the to-be-used detection condition corresponding to the cooling tower fan. Among them, there are at least two water valves corresponding to the cooling tower fan connected to the air compressor to be started, and it is detected whether there is at least one opened water valve, and the opened water valve corresponds to the cooling tower fan with the shortest cumulative running time. Further, it is determined whether there is at least one cooling water pump with an opened water valve, and if so, the corresponding cooling water pump is started, and it is determined whether the cooling tower fan is turned on according to the detection result of the cooling water outlet temperature of the cooling tower fan.

[0043] On this basis, only when all the associated devices meet the corresponding detection conditions for use, the status detection result of each associated device is determined to be detection passed, and it is further determined whether the target air compressor system can be started.

[0044] It should be noted that the equipment startup sequence of the at least one associated device mainly refers to the startup sequence of the water valve and the cooling tower. Generally speaking, before starting the target air compressor system, it is necessary to ensure that the test result of the water valve is passed, and then test the cooling tower after the water valve is started, and start the target air compressor state when the test result of the cooling tower is passed.

[0045] S130: When the status detection results corresponding to the associated devices of all the air compressors to be started are all detected as passed, and the system pressure of the target air compressor system meets the preset system pressure, the target air compressor system is started.

[0046] The preset system pressure may be understood as the minimum system pressure threshold for starting the target air compressor system.

[0047] In practical applications, when the status detection results of all the associated devices of the air compressor to be started are all passed, it is necessary to further determine whether the system pressure of the current target air compressor system is less than the preset system pressure. If so, the target air compressor system can be started, and if not, the target air compressor system does not need to be started. In other words, whether to start the target air compressor system can be automatically controlled according to the system pressure of the target air compressor system and the preset system pressure.

[0048] The technical solution of the embodiment of the present invention is to determine at least one air compressor to be started in the target air compressor system according to the current standby mode corresponding to the target air compressor system when the system startup control is detected to be triggered; for each air compressor to be started, the device state detection is performed on at least one associated device of the current air compressor to be started based on at least one standby detection condition to obtain the state detection result corresponding to each associated device; when the state detection results corresponding to the associated devices of all the air compressors to be started are all detected to pass, and the system pressure of the target air compressor system meets the preset system pressure, the target air compressor system is started. In this technical solution, before the target air compressor system is controlled by the system, the standby mode corresponding to the target air compressor system is first determined to determine at least one air compressor to be started from at least one air compressor device of the target air compressor system according to the standby function mode. Further, when starting each air compressor device to be started, it is also necessary to automatically detect whether the device state of at least one associated device connected to each air compressor to be started can support the start of the air compressor to be started, and only when the device states of all the associated devices of the air compressors to be started are detected to pass, the corresponding air compressor to be started is started. On this basis, whether to start the target air compressor is further determined according to whether the system pressure of the target air compressor system meets the preset system pressure. The problem that the manual start of the air compressor equipment in the air compressor system in the prior art is highly subjective, and there may be insufficient air supply in the air compressor system and unreasonable allocation of the air compressor equipment, which shortens the service life of the air compressor equipment. By automatically judging the equipment status of each air compressor equipment in the target air compressor, the air compressor equipment in the air compressor system is started objectively and reasonably, and the air compressor equipment in the air compressor system is started automatically. While ensuring the air supply in the air compressor system, the use of the air compressor equipment is reasonably optimized to extend the service life of the air compressor equipment.

[0049] Embodiment 2

[0050] Figure 2 A flow chart of a control method for an air compressor system provided in Embodiment 2 of the present invention. Optionally, if the interval time during which the system pressure is less than the preset system pressure is greater than the preset interval time, it is determined whether there is a standby air compressor in the target air compressor system; if so, at least one standby air compressor is determined from at least one standby air compressor, and the standby air compressor is started; if not, at least one standby air compressor is determined from at least one standby air compressor based on the running time of at least one air compressor to be started, and the standby air compressor is started.

[0051] like Figure 2 As shown, the method includes:

[0052] S210: When it is detected that the system startup control is triggered, at least one air compressor to be started in the target air compressor system is determined according to the standby mode currently corresponding to the target air compressor system.

[0053] S220: For each air compressor to be started, perform device status detection on at least one associated device of the air compressor to be started based on at least one detection condition to be used, and obtain a status detection result corresponding to each associated device.

[0054] S230: If the interval duration during which the system pressure is less than the preset system pressure is longer than the preset interval duration, at least one standby air compressor is determined and started.

[0055] The system pressure refers to the air supply pressure of the target system. The preset system pressure refers to the minimum air supply pressure of the target air compressor system. The preset interval time refers to the maximum interval time when the system pressure is less than the preset system pressure. The standby air compressor can be understood as the air compressor equipment that will be used when the machine is added.

[0056] In actual applications, during the use of the target air compressor system, there may be a need to add or reduce the number of air compressors in the target air compressor system. The so-called adding process refers to the process of increasing the number of air compressors to be started on the basis of starting the air compressor to be started, and the so-called reducing process refers to the process of reducing the number of air compressors to be started on the basis of the current air compressor to be started.

[0057] Specifically, during production operation, as the gas consumption suddenly increases, the system pressure of the target air compressor system will drop sharply. For example, when the silk-making workshop is undergoing centralized blow molding maintenance, the gas consumption increases from 3000Nm 3 / h increased to 6000Nm 3 / h, in this case, it is necessary to add machines immediately. It should be noted that in order to avoid starting multiple air compressors in a short period of time during the process of adding machines, an "air compressor start interval" is set. When the last newly added machine is running the "air compressor start interval", the system allows to continue adding machines, that is, when the system pressure of the target air compressor system is less than the preset system pressure, the interval time is greater than the preset interval time, at least one spare air compressor is determined, and at least one spare air compressor is started one by one according to the preset air compressor start interval time.

[0058] Optionally, if the interval time during which the system pressure is less than the preset system pressure is greater than the preset interval time, determine whether there is a standby air compressor in the target air compressor system; if so, determine at least one standby air compressor from at least one standby air compressor and start the standby air compressor; if not, determine at least one standby air compressor from at least one standby air compressor based on the running time of at least one air compressor to be started, and start the standby air compressor.

[0059] Among them, the standby air compressor can be understood as an air compressor device that is in the on state but not actually running.

[0060] Exemplarily, taking the preset system pressure of 0.65MPa as an example, when the system pressure of the target air compressor system is lower than 0.65MPa, and the loading time of the started air compressor exceeds the air compressor start interval, such as 180 seconds, other standby air compressors are immediately started to ensure that the system pressure of the target air compressor system is higher than 0.65MPa. Specifically, when the target air compressor system is in an automatic state and the system pressure is lower than 0.65MPa, it is detected whether there is a standby air compressor in the target air compressor system. If so, the standby air compressor is prioritized as a standby air compressor and started. If not, based on the running time of at least one air compressor to be started, one or more air compressor devices with the shortest running time are used as standby air compressors and started. Among them, when there are multiple standby air compressors, it is necessary to start each standby air compressor one by one according to the pre-set air compressor start interval.

[0061] Optionally, when a system failure is detected in the target air compressor system, the faulty air compressor in the target air compressor system is determined; the target loading air supply corresponding to the faulty air compressor is determined, and at least one target starting air compressor is determined from at least one candidate air compressor based on the target loading air supply.

[0062] Among them, the total air supply of at least one target starting air compressor is greater than or equal to the target loading air supply. The target loading air supply can be understood as the air supply that can be provided when the faulty air compressor operates normally. The candidate air compressor can be understood as an unused standby air compressor. The target starting air compressor can be understood as the air compressor equipment that needs to be used among the candidate air compressors determined according to the target loading air supply.

[0063] In actual applications, during the operation of the target air compressor system, the air compressor equipment may fail and shut down. At this time, the system pressure in the target air compressor system will drop sharply. In order to ensure the stability of the system pressure, it is necessary to add equipment.

[0064] Specifically, when it is detected that there is a faulty air compressor in the target air compressor system, the target loading air supply of the faulty air compressor can be determined to determine at least one target start-up air compressor according to the target loading air supply. It should be noted that since the shutdown of the faulty air compressor causes a sharp drop in system pressure, it is necessary to immediately start at least one target start-up air compressor. When there are multiple target start-up air compressors, the air compressor start-up interval of each target start-up air compressor can be skipped, that is, multiple target start-up air compressors are started at the same time. For example, the air supply of air compressor A is greater than the target loading air supply, while the air supply of air compressor B and air compressor C is smaller, but when air compressor B and air compressor C are turned on at the same time, the air supply that can be provided is greater than the target loading air supply of the faulty air compressor. At this time, air compressor A, air compressor B and air compressor C can be used as candidate air compressors, and on the premise of meeting the target loading air supply, the target start-up air compressor is determined from the candidate air compressors in a way that the start-up quantity is small. That is to say, the air compressor is started as the target air compressor first. If the air compressor A also has a fault, the air compressors B and C are started as the targets, and the air compressors B and C are started at the same time.

[0065] Optionally, if the system pressure of the target air compressor system is greater than the preset system pressure, and the interval duration during which the system pressure is greater than the preset system pressure is greater than the preset interval duration, the air supply corresponding to each air compressor to be started is determined; for each air compressor to be started, if the air supply of the current air compressor to be started is greater than the preset air supply, the start-up state of the current air compressor to be started is adjusted to the standby state.

[0066] In actual applications, when the system pressure of the target air compressor system is greater than the preset system pressure, and the interval time is greater than the preset interval time, the air compressor equipment in the target air compressor system will be repeatedly unloaded, that is, the air compressor equipment is in a standby state where it is turned on but not actually running, which in turn leads to an increase in the energy consumption of the target air compressor system. In order to control the energy consumption of the target air compressor system and meet the process requirements of the air supply pressure of the target air compressor, the air compressor equipment in the target air compressor system can be reduced.

[0067] Specifically, when the system pressure (i.e., the air supply pressure) of the target air compressor system exceeds the preset system pressure, the next shut-down air compressor is confirmed to execute the unloading command. When the unloading time (the interval from the last unloading to the current loading) exceeds the "standby time after unloading", such as set to 5 minutes, the air compressor is stopped. The "standby time after unloading" is introduced to prevent the air compressor from being repeatedly started and stopped.

[0068] It should be noted that when reducing the number of machines, it is necessary to give priority to starting small-capacity air compressors and reduce the number of air compressor equipment started as much as possible.

[0069] For example, when air compressor No. 4 is running at low load, if its load is lower than the rated load of air compressor No. 1 (R4≤720), after 2 minutes, it will switch to air compressor No. 1 (turn on air compressor No. 1, when air compressor No. 1 is turned on, turn off air compressor No. 4). If air compressor No. 1 and air compressor No. 4 are running at the same time, if their total load is lower than the rated load of air compressor No. 4, If the load of the fixed frequency machine and the No. 4 air compressor is lower than the rated load of the No. 4 air compressor, And after it lasts for 2 minutes, the fixed-frequency machine is unloaded.

[0070] The technical solution of the embodiment of the present invention is to determine at least one air compressor to be started in the target air compressor system according to the current standby mode corresponding to the target air compressor system when the system startup control is detected to be triggered; for each air compressor to be started, the device state detection is performed on at least one associated device of the current air compressor to be started based on at least one standby detection condition to obtain the state detection result corresponding to each associated device; when the state detection results corresponding to the associated devices of all the air compressors to be started are all detected to pass, and the system pressure of the target air compressor system meets the preset system pressure, the target air compressor system is started. In this technical solution, before the target air compressor system is controlled by the system, the standby mode corresponding to the target air compressor system is first determined to determine at least one air compressor to be started from at least one air compressor device of the target air compressor system according to the standby function mode. Further, when starting each air compressor device to be started, it is also necessary to automatically detect whether the device state of at least one associated device connected to each air compressor to be started can support the start of the air compressor to be started, and only when the device states of all the associated devices of the air compressors to be started are detected to pass, the corresponding air compressor to be started is started. On this basis, whether to start the target air compressor is further determined according to whether the system pressure of the target air compressor system meets the preset system pressure. The problem that the manual start of the air compressor equipment in the air compressor system in the prior art is highly subjective, and there may be insufficient air supply in the air compressor system and unreasonable allocation of the air compressor equipment, which shortens the service life of the air compressor equipment. By automatically judging the equipment status of each air compressor equipment in the target air compressor, the air compressor equipment in the air compressor system is started objectively and reasonably, and the air compressor equipment in the air compressor system is started automatically. While ensuring the air supply in the air compressor system, the use of the air compressor equipment is reasonably optimized to extend the service life of the air compressor equipment.

[0071] Embodiment 3

[0072] Figure 3 This is a schematic diagram of the structure of a control device for an air compressor system provided in Embodiment 3 of the present invention. Figure 3As shown, the device includes: an air compressor determination module 310, a detection result determination module 320 and a system startup module 330.

[0073] The air compressor determination module 310 is used to determine at least one air compressor to be started in the target air compressor system according to the standby mode currently corresponding to the target air compressor system when the system startup control is detected to be triggered; wherein the standby mode is a time optimization mode or an equipment balancing mode;

[0074] The detection result determination module 320 is used to perform device status detection on at least one associated device of the current air compressor to be started based on at least one detection condition to be used for each air compressor to be started, and obtain a status detection result corresponding to each associated device; wherein the associated devices include a water valve, a cooling tower fan, and a cooling water pump;

[0075] The system startup module 330 is used to start the target air compressor system when the status detection results corresponding to the associated devices of all the air compressors to be started are all detected as passed and the system pressure of the target air compressor system meets the preset system pressure.

[0076] The technical solution of the embodiment of the present invention is to determine at least one air compressor to be started in the target air compressor system according to the current standby mode corresponding to the target air compressor system when the system startup control is detected to be triggered; for each air compressor to be started, the device state detection is performed on at least one associated device of the current air compressor to be started based on at least one standby detection condition to obtain the state detection result corresponding to each associated device; when the state detection results corresponding to the associated devices of all the air compressors to be started are all detected to pass, and the system pressure of the target air compressor system meets the preset system pressure, the target air compressor system is started. In this technical solution, before the target air compressor system is controlled by the system, the standby mode corresponding to the target air compressor system is first determined to determine at least one air compressor to be started from at least one air compressor device of the target air compressor system according to the standby function mode. Further, when starting each air compressor device to be started, it is also necessary to automatically detect whether the device state of at least one associated device connected to each air compressor to be started can support the start of the air compressor to be started, and only when the device states of all the associated devices of the air compressors to be started are detected to pass, the corresponding air compressor to be started is started. On this basis, whether to start the target air compressor is further determined according to whether the system pressure of the target air compressor system meets the preset system pressure. This solves the problem that the manual start-up of the air compressor equipment in the air compressor system in the prior art is highly subjective, and there may be insufficient air supply in the air compressor system and unreasonable allocation of the air compressor equipment, which shortens the service life of the air compressor equipment. By automatically judging the equipment status of each air compressor equipment in the target air compressor, the air compressor equipment in the air compressor system is started objectively and reasonably, and the air compressor equipment in the air compressor system is started automatically. While ensuring the air supply in the air compressor system, the use of the air compressor equipment is reasonably optimized to extend the service life of the air compressor equipment.

[0077] Optionally, the air compressor determination module includes: a mode determination unit, configured to determine a to-be-used mode corresponding to the target air compressor system based on a mode selection control in the target display panel;

[0078] a first air compressor determination unit, configured to determine the number of air compressors to be started if the waiting mode is the time optimization mode, and determine a corresponding number of air compressors to be started from at least one air compressor of the target air compressor system according to the running time of each air compressor;

[0079] The second air compressor determining unit is used to determine at least one air compressor to be started in the target air compressor system according to the current date if the mode to be used is the equipment balancing mode.

[0080] Optionally, the detection result determination module includes: a startup sequence determination unit, configured to determine a device startup sequence of at least one associated device in the target air compressor system;

[0081] A current detection result determination unit, configured to detect the device state of the current associated device based on the to-be-used detection condition corresponding to the current associated device for each associated device, and obtain a current detection result;

[0082] The detection result determination unit is used to determine the next associated device corresponding to the current associated device according to the device startup sequence if the current detection result is a detection pass, so as to perform device status detection on the next associated device based on the to-be-used detection condition corresponding to the next associated device, until the device status detection of all associated devices is completed, and the status detection result corresponding to each associated device is obtained.

[0083] Optionally, the control device of the air compressor system further includes: a standby air compressor determination module, which is used to determine whether there is a standby air compressor in the target air compressor system if the system pressure of the target air compressor system is less than the preset system pressure, and the interval time length during which the system pressure is less than the preset system pressure is greater than the preset interval time length;

[0084] A first standby air compressor determination module, configured to, if yes, determine at least one standby air compressor from at least one standby air compressor and start the standby air compressor;

[0085] The second standby air compressor determination module is used to, if not, determine at least one standby air compressor from at least one standby air compressor according to the running time of at least one air compressor to be started, and start the standby air compressor.

[0086] Optionally, the control device of the air compressor system further includes: an air supply volume determination module, which is used to determine the air supply volume corresponding to each air compressor to be started if the system pressure of the target air compressor system is greater than the preset system pressure, and the interval time length during which the system pressure is greater than the preset system pressure is greater than the preset interval time length;

[0087] The state adjustment module is used for adjusting the start state of each air compressor to be started to a standby state if the air supply of the current air compressor to be started is greater than the preset air supply.

[0088] Optionally, the control device of the air compressor system further includes: a faulty air compressor determination module, which is used to determine the faulty air compressor in the target air compressor system when a system fault is detected in the target air compressor system;

[0089] The target starting air compressor determination module is used to determine the air supply to be supplemented corresponding to the faulty air compressor, and determine at least one target starting air compressor from at least one candidate air compressor based on the air supply to be supplemented; wherein the total air supply of at least one target starting air compressor is greater than or equal to the air supply to be supplemented.

[0090] The control device of the air compressor system provided in the embodiment of the present invention can execute the control method of the air compressor system provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0091] Embodiment 4

[0092] The embodiment of the present invention provides a PLC controller, and the PLC controller can select the SIMATIC S7-1500 PLC produced by Siemens as the main controller of the electrical control system. The SIMATIC S7-1500 PLC is a modular small to medium-sized PLC launched by Siemens. It has fast computing speed, rich software instructions, powerful functions, flexible and convenient expansion, high reliability, strong anti-interference ability and strong network communication ability. Inside the PLC controller, the following steps are implemented through a control algorithm corresponding to the control of the air compressor system: when it is detected that the system start control is triggered, at least one air compressor to be started in the target air compressor system is determined according to the standby mode currently corresponding to the target air compressor system; wherein the standby mode is a time optimization mode or an equipment balancing mode; for each air compressor to be started, based on at least one standby detection condition, an equipment status detection is performed on at least one associated equipment of the current air compressor to be started, and a status detection result corresponding to each associated equipment is obtained; wherein the associated equipment includes at least one of a water valve, a cooling tower fan and a cooling water pump; when the status detection results corresponding to the associated equipment of all the air compressors to be started are all detected as passed, and the system pressure of the target air compressor system meets the preset system pressure, the target air compressor system is started.

[0093] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0094] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method for an air compressor system, characterized in that: include: When it is detected that the system startup control is triggered, at least one air compressor to be started in the target air compressor system is determined according to the standby mode currently corresponding to the target air compressor system; wherein the standby mode is a time optimization mode or an equipment balancing mode; For each air compressor to be started, based on at least one detection condition to be used, perform equipment status detection on at least one associated device of the current air compressor to be started, and obtain a status detection result corresponding to each associated device; wherein the associated devices include a water valve, a cooling tower fan, and a cooling water pump; When the status detection results corresponding to the associated devices of all the air compressors to be started are all detected as passed, and the system pressure of the target air compressor system meets the preset system pressure, the target air compressor system is started.

2. The method according to claim 1, characterized in that The step of determining at least one air compressor to be started in the target air compressor system according to the standby mode currently corresponding to the target air compressor system comprises: Determining a mode to be used corresponding to a target air compressor system based on a mode selection control in a target display panel; If the standby mode is the time optimization mode, determining the number of air compressors that need to be started, and determining a corresponding number of air compressors to be started from at least one air compressor of the target air compressor system according to the running time of each air compressor; If the mode to be used is the equipment balancing mode, at least one air compressor to be started in the target air compressor system is determined according to the current date.

3. The method according to claim 1, characterized in that The device status detection is performed on at least one associated device of the air compressor to be started based on at least one detection condition to be used, and a status detection result corresponding to each associated device is obtained, including: Determining a device startup sequence of at least one associated device in the target air compressor system; For each associated device, based on the to-be-used detection condition corresponding to the currently associated device, the device state of the currently associated device is detected to obtain a current detection result; If the current detection result is a passed detection, the next associated device corresponding to the current associated device is determined according to the device startup sequence, so as to perform device status detection on the next associated device based on the to-be-used detection condition corresponding to the next associated device, until the device status detection of all associated devices is completed and the status detection result corresponding to each associated device is obtained.

4. The method according to claim 1, characterized in that: Also includes: If the interval duration during which the system pressure is less than the preset system pressure is longer than the preset interval duration, determining whether there is a standby air compressor in the target air compressor system; If yes, determining at least one standby air compressor from at least one standby air compressor, and starting the standby air compressor; If not, at least one standby air compressor is determined from at least one standby air compressor according to the running time of at least one air compressor to be started, and the standby air compressor is started.

5. The method according to claim 1, characterized in that Also includes: If the system pressure of the target air compressor system is greater than the preset system pressure, and the interval duration during which the system pressure is greater than the preset system pressure is greater than the preset interval duration, determining the air supply volume corresponding to each air compressor to be started; For each air compressor to be started, if the air supply volume of the current air compressor to be started is greater than the preset air supply volume, the start-up state of the current air compressor to be started is adjusted to the standby state.

6. The method according to claim 1, characterized in that Also includes: When a system failure is detected in the target air compressor system, determining a failed air compressor in the target air compressor system; Determine the air supply volume to be supplemented corresponding to the faulty air compressor, and determine at least one target starting air compressor from at least one candidate air compressor based on the air supply volume to be supplemented; wherein the total air supply volume of at least one of the target starting air compressors is greater than or equal to the air supply volume to be supplemented.

7. A control device for an air compressor system, characterized in that: include: An air compressor determination module is used to determine at least one air compressor to be started in the target air compressor system according to the standby mode currently corresponding to the target air compressor system when detecting that the system startup control is triggered; wherein the standby mode is a time optimization mode or an equipment balancing mode; A detection result determination module is used to perform device status detection on at least one associated device of the current air compressor to be started based on at least one detection condition to be used for each air compressor to be started, and obtain a status detection result corresponding to each associated device; wherein the associated device includes at least one of a water valve, a cooling tower fan and a cooling water pump; The system startup module is used to start the target air compressor system when the status detection results corresponding to the associated devices of all the air compressors to be started are all passed and the system pressure of the target air compressor system meets the preset system pressure.

8. A PLC controller, characterized in that: The controller comprises: At least one central processing unit; and a control module connected to the at least one central processing unit; The control module includes one or more power supplies, signal modules and corresponding process modules and communication modules, so that the PLC controller can execute the control method of the air compressor system according to any one of claims 1-6.

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