Control device and method for compressor unit, electronic equipment and storage medium

Abstract

The embodiment of the invention provides a control device and method for a compressor unit, electronic equipment and a storage medium. The device comprises a state determining unit and a logic control unit, the state determining unit can determine the current running state of the compressor unit according to running parameters related to the current running state of the compressor unit, and a state signal corresponding to the current running state of the compressor unit is sent to the logic control unit; when the logic control unit receives a first state signal corresponding to the current running state of the compressor unit and a manual opening signal used for controlling the opening of the emptying valve of the compressor unit, the logic control unit locks the closing state of the emptying valve of the compressor unit and does not send an opening control signal to the emptying valve; the air release valve is prevented from being opened in the operation process of the compressor unit, and interlocking trip of air separation devices of the whole plant caused by pressure loss in the follow-up process is avoided.

Description

Technical Field

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

[0002] With the continuous changes in the air separation unit market and user needs, the vent valve of the booster is constantly being improved. For example, the size of the vent valve is constantly changing with user requirements. At present, the vent valve can usually cover the full flow of the compressor.

[0003] Generally, the vent valve of the booster is directly connected to the switch button and only has a manual switch function. The operator can manually control the opening or closing of the vent valve through the switch button.

[0004] The switch design of the vent valve does not have preventive measures. If the operator mistakenly operates the switch button, it may cause a shutdown accident in the unit where the vent valve is located. For example, pressure release due to misoperation may cause the subsequent process to lose pressure and cause the interlock trip of the air separation unit in the entire plant. Summary of the Invention

[0005] In view of this, the present invention proposes a control device, method, electronic equipment and storage medium for a compressor unit, which can prevent unit shutdown accidents caused by erroneous operations.

[0006] According to a first aspect of an embodiment of the present invention, a control device for a compressor unit is provided, which includes a vent valve and a manual switch that is manually triggered to control the opening or closing of the vent valve. The control device includes: a state determination unit, which determines whether the compressor unit is currently in a running state or a stopped state based on operating parameters related to the current operating state of the compressor unit, and sends a first state signal corresponding to the current running state of the compressor unit or a second state signal corresponding to the current stopped state of the compressor unit; and a logic control unit, which, upon receiving the first state signal sent by the state determination unit and the manual opening signal for controlling the opening of the vent valve sent by the manual switch being manually triggered, locks the closed state of the vent valve without sending an opening control signal to the vent valve to control the opening of the vent valve.

[0007] In one possible implementation, the logic control unit, upon receiving the first state signal sent by the state determination unit and the manual opening signal sent when the manual switch is manually triggered, locks the closed state of the vent valve and sends a closing control signal to the vent valve to control the closing of the vent valve.

[0008] In one possible implementation, the logic control unit, upon receiving the second state signal sent by the state determination unit and the manual opening signal sent when the manual switch is manually triggered, releases the lock on the closed state of the vent valve and sends an opening control signal to the vent valve.

[0009] In a possible implementation, the logic control unit sends a closing control signal to the vent valve upon receiving the first state signal sent by the state determination unit and the manual closing signal sent when the manual switch is manually triggered to control the closing of the vent valve.

[0010] In a possible implementation, the logic control unit sends a closing control signal to the vent valve upon receiving the second state signal sent by the state determination unit and a manual closing signal sent when the manual switch is manually triggered to control the closing of the vent valve.

[0011] In a possible implementation, the manual switch includes an on button and an off button, and the logic control unit includes an AND gate, a NOT gate, an OR gate, and a reset trigger; the on button is connected to one input end of the AND gate, the other input end of the AND gate is connected to the output end of the NOT gate, the input end of the NOT gate is connected to the output end of the state determination unit, and the output end of the AND gate is connected to the reset end of the reset trigger; the off button is connected to one input end of the OR gate, the other input end of the OR gate is connected to the output end of the state determination unit, and the output end of the OR gate is connected to the set end of the reset trigger; the output end of the reset trigger is connected to the control end of the vent valve; when the state determination unit sends a first state signal When the state determination unit sends a second state signal and the open button is manually triggered to send a manual open signal for controlling the opening of the vent valve, the NOT gate sends a signal opposite to the first state signal to the AND gate when receiving the first state signal, and the AND gate sends a first valid signal to the reset trigger when receiving the signal opposite to the first state signal and the manual open signal, and the OR gate sends a second valid signal to the reset trigger when receiving the first state signal; when the state determination unit sends a second state signal and the open button is manually triggered to send a manual open signal, the NOT gate sends a signal opposite to the second state signal to the AND gate when receiving the second state signal, and the AND gate sends a signal opposite to the second state signal when receiving the signal opposite to the second state signal and a manual opening signal, the OR gate sends a second valid signal to the reset trigger when receiving the second state signal, the OR gate sends a first valid signal to the reset trigger when receiving the second state signal; when the state determination unit sends the first state signal, and the close button is manually triggered and sends a manual close signal for controlling the closing of the vent valve, the NOT gate sends a signal opposite to the first state signal to the AND gate when receiving the first state signal, and the AND gate sends a first valid signal to the reset trigger when receiving the signal opposite to the first state signal, the OR gate sends a second valid signal to the reset trigger when receiving the first state signal and the manual close signal; when the state determination unit sends the second state signal, and the close button When manually triggered and sending a manual closing signal, the NOT gate sends a signal opposite to the second state signal to the AND gate when receiving the second state signal, and the AND gate sends a first valid signal to the reset trigger when receiving the signal opposite to the second state signal. The OR gate sends a second valid signal to the reset trigger when receiving the second state signal and the manual closing signal; the reset trigger sends a closing control signal to the vent valve to control the closing of the vent valve when receiving the first valid signal sent by the AND gate and the second valid signal sent by the OR gate, and sends an opening control signal to the vent valve to control the opening of the vent valve when receiving the second valid signal sent by the AND gate and the first valid signal sent by the OR gate.

[0012] According to a second aspect of an embodiment of the present invention, a control method for a compressor unit is provided, which includes a vent valve and a manual switch that is manually triggered to control the opening or closing of the vent valve. The control method includes: determining whether the compressor unit is currently in an operating state or a stopped state based on operating parameters related to the current operating state of the compressor unit; when it is determined that the compressor unit is currently in an operating state and the manual switch is manually triggered to send a manual opening signal for controlling the opening of the vent valve, locking the closed state of the vent valve without sending an opening control signal to the vent valve to control the opening of the vent valve.

[0013] According to a third aspect of an embodiment of the present invention, an electronic device is provided, comprising a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other via the communication bus; the memory is used to store at least one executable instruction, and the executable instruction enables the processor to perform an operation corresponding to the method described in the second aspect above.

[0014] According to a fourth aspect of an embodiment of the present invention, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method described in the second aspect is implemented.

[0015] According to an embodiment of the present invention, a control device for a compressor unit is provided, which includes a state determination unit and a logic control unit. The state determination unit can determine whether the compressor unit is currently in a running state or a stopped state based on operating parameters related to the current operating state of the compressor unit, and send a first state signal corresponding to the current running state of the compressor unit or a second state signal corresponding to the current stopped state of the compressor unit. By introducing a signal indicating the operating state of the unit, when the state determination unit sends the first state signal to the logic control unit, the logic control unit locks the closed state of the vent valve and does not send an opening control signal for controlling the opening of the vent valve to the vent valve. The vent valve is not allowed to be opened during the operation of the compressor unit, thereby avoiding pressure loss, which causes the subsequent process to cause the interlocking trip of the air separation unit of the entire plant due to pressure loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that those skilled in the art will understand the above and other features and advantages of the present invention more clearly. In the accompanying drawings:

[0017] Figure 1 A schematic diagram of a control device for a compressor unit is provided for an exemplary embodiment of the present invention.

[0018] Figure 2A schematic diagram of a control device for a compressor unit is provided for another exemplary embodiment of the present invention.

[0019] Figure 3 A flow chart of a control method for a compressor unit is provided for an exemplary embodiment of the present invention.

[0020] Figure 4 A schematic structural diagram of an electronic device provided by an exemplary embodiment of the present invention.

[0021] List of reference numerals:

[0022] 100: Control device for a compressor unit; 101: State determination unit; 102: Logic control unit; 103: Switch; 200: Vent valve; 11: Open button; 12: Close button; 21: AND gate; 22: NOT gate; 23: OR gate; 24: Reset trigger; R: Reset terminal of the reset trigger; S: Set terminal of the reset trigger; Q: An output terminal of the reset trigger; : Another output terminal of the reset trigger; 300: Control method for a compressor unit; 301~302: Method steps; 400: Electronic device; 402: Processor; 404: Communication interface; 406: Memory; 408: Communication bus; 410: Program. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the following examples.

[0024] An air separation unit (ASU) is a type of industrial equipment whose primary function is to separate the various gas components in air to produce inert gases such as oxygen, nitrogen, and argon. Using air as a raw material, ASU converts the air into a liquid through a compression cycle and deep freezing. This liquid is then subjected to distillation to gradually separate the desired gases from the liquid air. It is widely used in industries such as metallurgy, coal chemical industry, and ammonia synthesis.

[0025] The compressor unit is a key component of an air separation unit, responsible for compressing air into a liquid state. In an air separation system, the compressor unit typically includes a self-cleaning air filter, a steam turbine, an air compressor, a booster, and an instrument compressor. Large air separation units typically use boosters of either single-shaft isothermal centrifugal compressors or geared centrifugal compressors.

[0026] The compressor unit is provided with a vent valve, which may be a ball valve, a butterfly valve, a single-seat stop valve, and the like. The embodiment of the present application does not limit the type of the vent valve 200. By analyzing and summarizing different process requirements, the valve type of the vent valve can be divided into fault-closed or fault-open. For example, if the subsequent process requires a continuous and stable gas flow and pressure, then if there is a vent valve between stages or in the unit, the valve type of the vent valve is fault-closed. If it is a boost air compressor (BAC) unit, and the BAC unit is controlled in sections, the valve type of the vent valve installed between stages is fault-closed; the valve type of the outlet vent valve can be fault-closed or fault-open according to the process requirements.

[0027] The control device for the compressor unit provided in this application is installed in the compressor unit, please refer to Figure 1 , which shows a structural schematic diagram of a control device 100 for a compressor unit provided by an exemplary embodiment of the present application. The compressor unit includes a vent valve 200 and a manual switch 103 that is manually triggered to control the opening or closing of the vent valve 200. The control device 100 includes: a state determination unit 101 and a logic control unit 102.

[0028] The state determination unit 101 is connected to the logic control unit 102 , the manual switch 103 is also connected to the logic control unit 102 , and the logic control unit 102 is connected to the vent valve 200 .

[0029] The state determination unit 101 determines whether the compressor unit is currently in a running state or a stopped state based on the operating parameters related to the current operating state of the compressor unit, and sends a first state signal corresponding to the current running state of the compressor unit or a second state signal corresponding to the current stopped state of the compressor unit; the logic control unit 102, when receiving the first state signal sent by the state determination unit 101 and the manual opening signal for controlling the opening of the vent valve 200 sent by the manual switch 103 being manually triggered, locks the closed state of the vent valve 200 and does not send an opening control signal for controlling the opening of the vent valve 200 to the vent valve 200.

[0030] If the compressor unit stops operating, the operating parameters related to the current operating state of the compressor unit are the parameters recorded before the stoppage, for example, these parameters are the operating data last recorded before the compressor unit stopped operating. Alternatively, if the compressor unit stops operating, the operating parameters related to the current operating state of the compressor unit are the parameters that still exist shortly after the stoppage due to factors such as system inertia, residual heat or residual pressure.

[0031] If the compressor unit is operating, the operating parameters related to the current operating state of the compressor unit are various operating data of the compressor unit measured in real time at the current moment or within the current time period, such as various data collected in real time by sensors, control systems, etc. during the operation of the compressor unit. Exemplarily, the operating parameters related to the current operating state of the compressor unit may be operating parameters within T minutes prior to the current moment, such as operating parameters within 3 minutes prior to the current moment, or operating parameters within 5 minutes prior to the current moment, or operating parameters within 10 minutes prior to the current moment, where T is a positive number and the value of T can be set according to actual needs.

[0032] Exemplarily, the operation of the compressor unit may include a process of the unit running and a process of allowing startup.

[0033] There are two situations in which the opening control signal is not sent to the vent valve 200;

[0034] 1) No control signal for controlling the opening or closing of the vent valve 200 is sent to the vent valve 200 .

[0035] Neither an opening control signal nor a closing control signal for controlling the closing of the vent valve 200 is sent to the vent valve 200. For example, upon receiving the first state signal sent by the state determination unit 101 and the manual opening signal sent by the manual switch 103 being manually triggered, the logic control unit 102 locks the closed state of the vent valve 200 and does not respond to the manual opening signal, thereby not sending any control signal to the vent valve 200.

[0036] 2) Send a closing control signal to the vent valve 200.

[0037] When receiving the first state signal sent by the state determination unit 101 and the manual opening signal sent by the manual switch 103 being manually triggered, the logic control unit 102 locks the closed state of the vent valve 200 and sends a closing control signal to the vent valve 200 .

[0038] Locking the closed state of the vent valve 200 is to prevent the closed state of the vent valve 200 from being changed, usually to ensure safety and prevent misoperation. If the closed state of the vent valve 200 is locked, the vent valve cannot be opened by any means before the lock is released.

[0039] The control device for a compressor unit provided in this embodiment includes a state determination unit and a logic control unit. The state determination unit can determine whether the compressor unit is currently in a running state or a stopped state based on operating parameters related to the current operating state of the compressor unit, and send a first state signal corresponding to the current running state of the compressor unit or a second state signal corresponding to the current stopped state of the compressor unit. By introducing a signal indicating the operating state of the unit, when the state determination unit sends the first state signal to the logic control unit, the logic control unit locks the closed state of the vent valve and does not send an opening control signal for controlling the opening of the vent valve to the vent valve. The vent valve is not allowed to be opened during the operation of the compressor unit to avoid pressure loss, which causes the subsequent process to cause the interlocking trip of the air separation unit of the entire plant due to pressure loss.

[0040] In a possible implementation, the logic control unit 102, upon receiving the second state signal sent by the state determination unit 101 and the manual opening signal sent by the manual switch 103 being manually triggered, releases the lock on the closed state of the vent valve (200) and sends an opening control signal to the vent valve (200).

[0041] If the logic control unit 102 receives the first state signal sent by the state determination unit 101, it locks the closed state of the vent valve 200. Even if it also receives a manual opening signal sent by the manual switch 103 being manually triggered, it does not send an opening control signal to the vent valve 200, so that the vent valve 200 is in a closed state and cannot be changed; if the logic control unit 102 receives the second state signal sent by the state determination unit 101, it unlocks the lock on the closed state of the vent valve 200. At this time, if the logic control unit 102 also receives a manual opening signal, it responds to the manual opening signal, generates an opening control signal, and then sends an opening control signal to the vent valve 200 to control the opening of the vent valve 200.

[0042] In one possible implementation, the logic control unit 102 sends a closing control signal to the vent valve 200 when receiving the first state signal sent by the state determination unit 101 and the manual closing signal sent by the manual switch 103 when it is manually triggered to control the closing of the vent valve 200.

[0043] If the compressor unit is currently in operation, when the logic control unit 102 receives a manual shutdown signal sent by the manual switch 103 being manually triggered, it will respond to the manual shutdown signal, generate a shutdown control signal, and send the shutdown control signal to the vent valve 200.

[0044] In one possible implementation, the logic control unit 102 sends a closing control signal to the vent valve 200 when receiving the second state signal sent by the state determination unit 101 and the manual closing signal sent by the manual switch 103 when it is manually triggered to control the closing of the vent valve 200.

[0045] If the compressor unit is currently in a stopped state, the logic control unit 102 will respond to the manual shutdown signal when it receives the manual shutdown signal sent by the manual switch 103 being manually triggered, generate a shutdown control signal, and send the shutdown control signal to the vent valve 200.

[0046] In one possible implementation, the logic control unit 102 sends a closing control signal to the vent valve 200 when it receives the first state signal or the second state signal sent by the state determination unit 101 and receives a manual closing signal sent by the manual switch 103 being manually triggered.

[0047] That is, no matter whether the compressor unit is running or stopped, the logic control unit 102 will generate a vent valve closing control signal when it receives a manual vent valve closing signal, and send the vent valve closing control signal to the vent valve 200 to ensure that the vent valve 200 can be closed at any time.

[0048] In a possible implementation, the manual switch 103 includes an on button 11 and an off button 12, and the logic control unit 102 includes an AND gate 21, a NOT gate 22, an OR gate 23, and a reset trigger 24. Figure 3 .

[0049] The open button 11 is connected to one input end of the AND gate 21, the other input end of the AND gate 21 is connected to the output end of the NOT gate 22, the input end of the NOT gate 22 is connected to the output end of the state determination unit 101, and the output end of the AND gate 21 is connected to the reset end R of the reset trigger 24; the close button 12 is connected to one input end of the OR gate 23, the other input end of the OR gate 23 is connected to the output end of the state determination unit 101, and the output end of the OR gate 23 is connected to the set end S of the reset trigger 24; the output end of the reset trigger 24 is connected to the control end of the vent valve 200.

[0050] The open button 11 sends a manual open signal to the AND gate 21 when manually triggered. The close button 12 sends a manual close signal to the OR gate 23 when manually triggered.

[0051] NOT gate 22 receives the first state signal or the second state signal from state determination unit 101 and sends a signal opposite to the first state signal or the second state signal to AND gate 21. AND gate 21 receives the signal opposite to the first state signal or the second state signal sent by NOT gate 22, receives the manual open signal sent when open button 11 is manually triggered, and sends the first valid signal or the second valid signal to reset flip-flop 24.

[0052] The OR gate 23 receives the first state signal or the second state signal from the state determination unit 101 , receives the manual closing signal sent when the closing button 12 is manually triggered, and sends the first valid signal or the second valid signal to the reset trigger 24 .

[0053] The reset trigger 24 receives the first valid signal or the second valid signal sent by the AND gate 21 , receives the first valid signal or the second valid signal sent by the OR gate 23 , and sends an opening control signal or a closing control signal to the vent valve 200 .

[0054] When the state determination unit 101 sends a first state signal and the open button 11 is manually triggered and sends a manual open signal, the NOT gate 22 sends a signal opposite to the first state signal to the AND gate 21 when receiving the first state signal, and the AND gate 21 sends a first valid signal to the reset trigger 24 when receiving the signal opposite to the first state signal and the manual open signal, and the OR gate 23 sends a second valid signal to the reset trigger 24 when receiving the first state signal.

[0055] When the state determination unit 101 sends a second state signal and the open button 11 is manually triggered and sends a manual open signal, the NOT gate 22 sends a signal opposite to the second state signal to the AND gate 21 when receiving the second state signal, and the AND gate 21 sends a second valid signal to the reset trigger 24 when receiving the signal opposite to the second state signal and the manual open signal, and the OR gate 23 sends a first valid signal to the reset trigger 24 when receiving the second state signal.

[0056] When the state determination unit 101 sends a first state signal and the close button 12 is manually triggered and sends a manual close signal, the NOT gate 22 sends a signal opposite to the first state signal to the AND gate 21 when receiving the first state signal, and the AND gate 21 sends a first valid signal to the reset trigger 24 when receiving the signal opposite to the first state signal. The OR gate 23 sends a second valid signal to the reset trigger 24 when receiving the first state signal and the manual close signal.

[0057] When the state determination unit 101 sends the second state signal and the close button 12 is manually triggered and sends a manual close signal, the NOT gate 22 sends a signal opposite to the second state signal to the AND gate 21 when receiving the second state signal, and the AND gate 21 sends a first valid signal to the reset trigger 24 when receiving the signal opposite to the second state signal. The OR gate 23 sends a second valid signal to the reset trigger 24 when receiving the second state signal and the manual close signal.

[0058] The reset trigger 24 sends a closing control signal to the vent valve 200 to control the closing of the vent valve 200 when receiving the first valid signal sent by the AND gate 21 and the second valid signal sent by the OR gate 23. The reset trigger 24 sends an opening control signal to the vent valve 200 to control the opening of the vent valve 200 when receiving the second valid signal sent by the AND gate 21 and the first valid signal sent by the OR gate 23.

[0059] For example, Figure 2 The signals transmitted in the control device shown are level signals. Figure 2 The logic truth table of the control device is shown in Table 1 below. The first state signal represents logic 1, and the second state signal represents logic 0, that is, the first state signal and the second state signal correspond to different logic signals. The first valid signal represents logic 0, and the second valid signal represents logic 1, that is, the first valid signal and the second valid signal correspond to different logic signals. If the output terminal Q of the reset trigger is used to control the opening or closing of the vent valve 200, the closing control signal represents logic 1, and the opening control signal represents logic 0; if the output terminal Q of the reset trigger is used to control the opening or closing of the vent valve 200, the closing control signal represents logic 1, and the opening control signal represents logic 0; To control the opening or closing of vent valve 200, the closing control signal represents a logic 0, and the opening control signal represents a logic 1; that is, the closing control signal and the opening control signal also correspond to different logic signals. The manual closing signal represents a logic 1, and the manual opening signal represents a logic 1. Logic 1 is also called a true value 1, and logic 0 is also called a true value 0.

[0060] Table 1

[0061]

[0062] The control device for a compressor unit provided in this embodiment introduces a status signal indicating the current operating status of the compressor unit to control the opening or closing of the compressor unit's vent valve. When a manual open signal or manual close signal generated by manually triggering a manual switch is received, the control device determines whether to generate a close control signal or an open control signal based on the status signal. If the status signal is a first status signal corresponding to the compressor unit's current operating state, the vent valve is not allowed to open even if a manual open signal is received, to avoid pressure loss, which could cause subsequent processes to cause an interlock trip of the entire plant's air separation unit due to pressure loss. This prevents pressure loss caused by staff members mistakenly operating the open button. If the status signal is a second status signal corresponding to the compressor unit's current shutdown state, the vent valve is opened in response to the manual open signal. Furthermore, regardless of whether the compressor unit is currently operating or shut down, when the close button is triggered, the reset trigger 24 sets its output to 1, achieving a logical reset of the reset trigger 24 and simultaneously resetting the vent valve to closed. Furthermore, the control device can only control the opening or closing of the vent valve through status signals and manual switches, without introducing other control logic. In any state, the vent valve is not allowed to be automatically operated through other control logic of the compressor unit.

[0063] In a possible implementation, the operating parameters related to the current operating state of the compressor unit include at least one of the following:

[0064] The bearing temperature of the compressor refers to the temperature of the bearing part of the compressor;

[0065] The shaft displacement of the compressor refers to the displacement of the compressor shaft during operation due to various reasons (such as mechanical load changes, thermal expansion, bearing wear, etc.);

[0066] The shaft vibration value of the compressor refers to the quantitative index of the vibration degree of the compressor shaft during operation;

[0067] The operating parameters of the compressor probe refer to the parameters used to identify whether the compressor probe is faulty, including the vibration signal characteristics, displacement amplitude, temperature, active power and reactive power of the power supply, etc.

[0068] The oil pressure of the compressor's lubricating oil refers to the pressure level of the lubricating oil in the compressor's lubrication system. This parameter is one of the key factors in ensuring that the moving parts inside the compressor are properly lubricated.

[0069] The surge parameters of the compressor are used to identify the surge phenomenon of the compressor, which include the compressor outlet pressure, compressor inlet flow rate, etc. The surge phenomenon refers to the phenomenon that when the flow rate decreases below a certain critical value during the operation of the compressor, the airflow forms a separation area on the non-working surface of the impeller, causing a sharp increase in impact loss;

[0070] Compressor inlet pressure refers to the pressure of gas or steam measured at the suction port of the compressor;

[0071] The compressor outlet temperature refers to the final temperature of the gas or vapor before it is discharged from the compressor after the compression process is completed inside the compressor;

[0072] The manual stop sign is used to indicate that the compressor is to be stopped manually.

[0073] The state determination unit 101 determines whether there is a fault in the compressor unit based on at least one of the above operating parameters. If there is no fault, it sends a first state signal to the logic control unit 102; if there is a fault, it sends a second state signal to the logic control unit 102.

[0074] Exemplarily, the state determination unit 101 determines whether a fault exists by performing at least one of the following steps:

[0075] Determine whether the actual bearing temperature is higher than or equal to the bearing temperature safety threshold; if the actual bearing temperature is higher than or equal to the bearing temperature safety threshold, determine that a fault exists; if the actual bearing temperature is lower than the bearing temperature safety threshold, determine that no fault exists, i.e., no fault exists.

[0076] Determine whether the actual shaft displacement is greater than or equal to a safety threshold for shaft displacement; if the actual shaft displacement is greater than or equal to the safety threshold for shaft displacement, determine that a fault exists; if the actual shaft displacement is less than the safety threshold for shaft displacement, determine that no fault exists.

[0077] Determine whether the actual shaft vibration value is higher than or equal to the safety threshold of the shaft vibration; if the actual shaft vibration value is higher than or equal to the safety threshold of the shaft vibration, determine that a fault exists; if the actual shaft vibration value is lower than the safety threshold of the shaft vibration, determine that no fault exists.

[0078] Determine whether the compressor probe is faulty based on its operating parameters. If so, a fault is determined to exist; if not, no fault is determined. For example, determine whether the probe's vibration signal characteristics, displacement amplitude, temperature, active power consumption, reactive power consumption, and other parameters are within safe operating thresholds. If so, the probe is deemed fault-free. If at least one parameter is outside the safe operating threshold, the probe is deemed faulty.

[0079] Determine whether the actual oil pressure of the lubricating oil is lower than or equal to the oil pressure safety threshold; if the actual oil pressure is lower than or equal to the oil pressure safety threshold, determine that a fault exists; if the actual oil pressure is higher than the oil pressure safety threshold, determine that no fault exists.

[0080] Determine whether the compressor is experiencing surge based on its surge parameters. If surge is present, a fault is determined. If not, no fault is determined. For example, determine whether parameters such as the compressor outlet pressure and compressor inlet flow rate are within safe operating thresholds. If so, determine that surge is not present. If at least one parameter is outside the safe operating threshold, determine that surge is present.

[0081] Determine whether the actual compressor inlet pressure is lower than or equal to a first safety threshold of the inlet pressure; if the actual compressor inlet pressure is lower than or equal to the first safety threshold, determine that a fault exists; if the actual compressor inlet pressure is higher than the first safety threshold, determine that no fault exists.

[0082] Determining whether the actual compressor inlet pressure is greater than or equal to a second safety threshold for inlet pressure; if the actual compressor inlet pressure is greater than or equal to the second safety threshold, determining that a fault exists; if the actual compressor inlet pressure is less than the second safety threshold, determining that no fault exists. The second safety threshold is greater than the first safety threshold.

[0083] Determine whether the actual compressor outlet temperature is greater than or equal to a safety threshold for the bearing temperature; if so, determine that a fault exists; if so, determine that no fault exists.

[0084] Determine whether a fault exists based on a manual stop sign. If a manual stop sign exists, determine that a fault exists; otherwise, determine that no fault exists. For example, manual stop signs can be identified from logs.

[0085] Optionally, the state determination unit 101 determines whether there is a train jumping event based on the at least one operating parameter, generates a first state signal if there is no train jumping event, and generates a second state signal if there is at least one train jumping event.

[0086] Optionally, the trip event includes at least one of the following:

[0087] The high bearing temperature trip event is triggered when the actual bearing temperature of the compressor is higher than or equal to the safety threshold of the bearing temperature.

[0088] The compression equipment is configured with two bearing temperature thresholds: an alarm threshold and a safety threshold. If the bearing temperature exceeds the alarm threshold, an over-temperature alarm is issued. If the bearing temperature continues to rise, exceeding the safety threshold, a tripping mechanism is automatically triggered, halting the equipment and generating a trip event. The safety threshold is higher than the alarm threshold.

[0089] High shaft displacement trip event: The high shaft displacement trip event is triggered because the actual shaft displacement of the compressor is higher than or equal to the safety threshold of the shaft displacement.

[0090] The compression equipment is configured with two shaft displacement thresholds: an alarm threshold and a safety threshold. If the shaft displacement exceeds the alarm threshold, an excessive shaft displacement alarm is issued. If the shaft displacement continues to increase, exceeding the safety threshold, a tripping mechanism is automatically triggered, halting the equipment and generating a trip event. The safety threshold is higher than the alarm threshold.

[0091] High shaft vibration trip event: The high shaft vibration trip event is triggered because the actual shaft vibration value of the compressor is higher than or equal to the safety threshold of the shaft vibration.

[0092] The compression equipment is configured with two shaft vibration thresholds: an alarm threshold and a safety threshold. If the shaft vibration exceeds the alarm threshold, an excessive vibration alarm is issued. If the shaft vibration continues to increase, exceeding the safety threshold, a tripping mechanism is automatically triggered, halting the equipment and generating a trip event. The safety threshold is higher than the alarm threshold.

[0093] ·Probe failure trip event: The probe failure trip event is a trip event triggered by a probe failure of the compressor.

[0094] A probe failure on the compression equipment will automatically trigger the tripping mechanism, stop the equipment operation, and generate a trip event, that is, a probe failure trip event.

[0095] The low lubricating oil pressure interlock trip event is triggered when the actual oil pressure of the compressor's lubricating oil is lower than the safety threshold of the oil pressure.

[0096] The compression equipment is configured with two oil pressure thresholds: an alarm threshold and a safety threshold. If the lubricating oil pressure falls below the alarm threshold, a low oil pressure alarm is issued. If the oil pressure continues to drop below the safety threshold, the tripping mechanism is automatically triggered, interlocking the control equipment and causing a trip event. This is known as a low lubricating oil pressure interlock trip. The safety threshold is lower than the alarm threshold.

[0097] Surge trip event: A surge trip event is triggered by compressor surge.

[0098] If the compression equipment (i.e., the compressor) surges, the tripping mechanism is automatically triggered, the equipment stops running, and a trip event occurs, which is a surge trip event.

[0099] The compressor inlet pressure is low interlock trip event. The compressor inlet pressure is low interlock trip event is triggered because the actual inlet pressure of the compressor is lower than the first safety threshold of the inlet pressure.

[0100] The compressor inlet pressure high interlock trip event is triggered because the actual inlet pressure of the compressor is higher than the second safety threshold of the inlet pressure.

[0101] The compression device is equipped with four inlet pressure thresholds, including a first alarm threshold and a second alarm threshold for the inlet pressure, as well as a first safety threshold and a second safety threshold for the inlet pressure. The first safety threshold for the inlet pressure is lower than the first alarm threshold, the first alarm threshold for the inlet pressure is lower than the second alarm threshold, and the second alarm threshold for the inlet pressure is lower than the second safety threshold. If the compressor inlet pressure falls below the first alarm threshold, an alarm indicating low compressor inlet pressure is issued. If the compressor inlet pressure continues to decrease, causing the compressor inlet pressure to fall below the first safety threshold, the tripping mechanism is automatically triggered, the control device interlocks and trips, and a trip event is generated, i.e., a low compressor inlet pressure interlock trip event. If the compressor inlet pressure exceeds the second alarm threshold, an alarm indicating high compressor inlet pressure is issued. If the compressor inlet pressure continues to rise, causing the compressor inlet pressure to rise above the second safety threshold, the tripping mechanism is automatically triggered, the control device interlocks and trips, and a trip event is generated, i.e., a high compressor inlet pressure interlock trip event.

[0102] The compressor outlet temperature is too high to trip the car. The compressor outlet temperature is too high to trip the car. This is because the actual compressor outlet temperature is higher than the safety threshold of the outlet temperature.

[0103] The compressor equipment is configured with two outlet temperature thresholds: an alarm threshold and a safety threshold. If the compressor outlet temperature exceeds the alarm threshold, an alarm is issued indicating excessive compressor outlet temperature. If the compressor outlet temperature continues to rise, exceeding the safety threshold, a tripping mechanism is automatically triggered, halting equipment operation and generating a trip event. The safety threshold for the compressor outlet temperature is higher than the alarm threshold.

[0104] The vehicle jump event is generated when the manual parking control button is triggered.

[0105] The vehicle jump event generated by the manual parking control button being triggered is a vehicle jump event triggered by the operator through the manual parking control button.

[0106] The method for determining the current operating status of the compressor group provided in the embodiment of the present application enables the status determination unit 101 to immediately know the current operating status of the compressor group, thereby ensuring that when the compressor group jumps, the status signal output by the status determination unit 101 to the logic control unit 102 can be reversed in time, ensuring that the logic control unit 102 can promptly control the vent valve to open after receiving the signal to open the vent valve.

[0107] Please refer to Figure 3 , which shows a flow chart of a control method 300 for a compressor unit provided in an embodiment of the present application. The compressor unit includes a vent valve 200 and a manual switch 103 that is manually triggered to control the opening or closing of the vent valve 200. The control method includes:

[0108] Step 301: Determine whether the compressor unit is currently in a running state or a stopped state based on operating parameters related to the current operating state of the compressor unit.

[0109] If the compressor unit stops operating, the operating parameters related to the current operating state of the compressor unit are the parameters recorded before the stoppage, for example, these parameters are the operating data last recorded before the compressor unit stopped operating. Alternatively, if the compressor unit stops operating, the operating parameters related to the current operating state of the compressor unit are the parameters that still exist shortly after the stoppage due to factors such as system inertia, residual heat or residual pressure.

[0110] If the compressor unit is running, the operating parameters related to the current operating state of the compressor unit are the various operating data of the compressor unit measured in real time at the current moment or in the current time period, for example, the various data collected in real time by sensors, control systems, etc. during the operation of the compressor unit. Exemplarily, the operating parameters related to the current operating state of the compressor unit can be the operating parameters within T minutes before the current moment, for example, the operating parameters within 3 minutes before the current moment, or the operating parameters within 5 minutes before the current moment, or the operating parameters within 10 minutes before the current moment, where T is a positive number and the value of T can be set according to actual needs. Exemplarily, the above-mentioned operation of the compressor unit can include the process of the unit running and the process of allowing startup.

[0111] Optionally, the operating parameters related to the current operating state of the compressor unit include at least one of the following: the bearing temperature of the compressor; the shaft displacement of the compressor; the shaft vibration value of the compressor; the vibration signal characteristics, displacement amplitude, temperature, active power and reactive power consumed by the probe; the oil pressure of the lubricating oil of the compressor; the compressor outlet pressure; the compressor inlet flow; the compressor inlet pressure; the compressor outlet temperature; the parking sign for manual parking. For example, the unit can determine whether there is a fault based on at least one of the above operating parameters. If there is no fault, it is determined that the compressor unit is currently in a running state. If there is a fault, it is determined that the compressor unit is currently in a stopped state. For the method of determining the current operating state of the compressor unit, please refer to the detailed description in the above embodiment, which will not be repeated here.

[0112] Step 302: When it is determined that the compressor unit is currently in operation and the manual switch is manually triggered to send a manual opening signal for controlling the opening of the vent valve, the closed state of the vent valve is locked without sending an opening control signal for controlling the opening of the vent valve to the vent valve.

[0113] There are two situations in which the opening control signal is not sent to the vent valve 200;

[0114] 1) No control signal for opening or closing the vent valve 200 is sent to the vent valve 200. Neither an opening control signal nor a closing control signal is sent to the vent valve 200. For example, if it is determined that the compressor unit is currently in operation and the manual switch is manually triggered to send a manual opening signal, the vent valve is locked in its closed state and does not respond to the manual opening signal, thereby not sending any control signal to the vent valve 200.

[0115] 2) Sending a closing control signal to the vent valve 200. For example, when it is determined that the compressor unit is currently in operation and the manual switch is manually triggered to send a manual opening signal, the closed state of the vent valve is locked and a closing control signal is sent to the vent valve 200.

[0116] Optionally, when it is determined that the compressor unit is currently in a stopped state and the manual switch 103 is manually triggered to send a manual opening signal for controlling the opening of the vent valve 200, the lock on the closed state of the vent valve 200 is released and an opening control signal for controlling the opening of the vent valve 200 is sent to the vent valve 200.

[0117] Optionally, when it is determined that the compressor unit is currently in operation and the manual switch 103 is manually triggered to send a closing / opening signal for controlling the closing of the vent valve 200 , a closing control signal for controlling the closing of the vent valve 200 is sent to the vent valve 200 .

[0118] Optionally, when it is determined that the compressor unit is currently in a stopped state and the manual switch 103 is manually triggered to send a closing and opening signal for controlling the closing of the vent valve 200, a closing control signal for controlling the closing of the vent valve 200 is sent to the vent valve 200.

[0119] In summary, the control method for a compressor unit provided in this embodiment introduces a status signal indicating the current operating status of the compressor unit to control the opening or closing of the vent valve of the compressor unit. When a manual opening signal or a manual closing signal generated by the manual switch being manually triggered is received, the above-mentioned status signal is combined to determine whether to generate a closing control signal or an opening control signal. If the status signal is a first status signal corresponding to the current operating state of the compressor unit, even if a manual opening signal is received, the vent valve is not allowed to be opened to avoid pressure loss, which causes the interlock tripping of the air separation unit of the entire plant due to pressure loss in subsequent processes, and can prevent pressure loss caused by the staff's misoperation of the open button. If the status signal is a second status signal corresponding to the current stopped state of the compressor unit, the manual opening signal will be responded to and the vent valve will be controlled to open.

[0120] Figure 4 This is a schematic block diagram of an electronic device 400 provided by an embodiment of the present invention. The specific embodiment of the present invention does not limit the specific implementation of the electronic device 400. Figure 4 As shown, the electronic device 400 may include: a processor 402, a communications interface 404, a memory 406, and a communication bus 408.

[0121] The processor 402 , the communication interface 404 , and the memory 406 communicate with each other via a communication bus 408 .

[0122] The communication interface 404 is used to communicate with other electronic devices or servers.

[0123] The processor 402 is configured to execute the program 410 , and specifically may execute the relevant steps in any of the aforementioned embodiments.

[0124] Specifically, the program 410 may include program codes, which include computer operation instructions.

[0125] Processor 402 may be a CPU, an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application. The one or more processors included in the smart device may be processors of the same type, such as one or more CPUs, or processors of different types, such as one or more CPUs and one or more ASICs.

[0126] RISC-V is an open-source instruction set architecture based on the principles of the Reduced Instruction Set Architecture (RISC). It can be applied to various fields, including microcontrollers and FPGA chips. Specifically, it has applications in areas such as IoT security, industrial control, mobile phones, and personal computers. Designed with small size, high speed, and low power consumption in mind, it is particularly well-suited for modern computing devices such as warehouse-scale cloud computers, high-end mobile phones, and tiny embedded systems. With the rise of the artificial intelligence (AI) Internet of Things (AIoT), the RISC-V instruction set architecture is gaining increasing attention and support, and is expected to become the next generation of widely used CPU architecture.

[0127] The computer operating instructions in the embodiments of the present application may be computer operating instructions based on the RISC-V instruction set architecture. Accordingly, the processor 402 may be designed based on the RISC-V instruction set. Specifically, the processor chip in the electronic device provided in the embodiments of the present application may be a chip designed using the RISC-V instruction set. The chip may execute executable code based on the configured instructions, thereby implementing the control method for the compressor unit in the above-mentioned embodiments.

[0128] The memory 406 is used to store the program 410. The memory 406 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk storage.

[0129] The program 410 may be specifically configured to enable the processor 402 to execute the method in any of the aforementioned embodiments.

[0130] The specific implementation of each step in program 410 can refer to the corresponding description of the corresponding steps and units in any of the aforementioned method embodiments, and will not be repeated here. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the above-described devices and modules can refer to the corresponding process descriptions in the aforementioned method embodiments, and will not be repeated here.

[0131] This application also provides a computer-readable storage medium storing instructions for causing a machine to execute the control method for a compressor unit as described herein. Specifically, a system or device equipped with a storage medium storing software program code implementing the functions of any of the above-described embodiments can be provided, and a computer (or CPU or MPU) of the system or device can be configured to read and execute the program code stored in the storage medium.

[0132] In this case, the program code read from the storage medium itself can realize the function of any one of the above embodiments, so the program code and the storage medium storing the program code constitute part of this application.

[0133] Examples of storage media for providing program code include floppy disks, hard disks, magneto-optical disks, optical disks (e.g., CD-ROMs, CD-Rs, CD-RWs, DVD-ROMs, DVD-RAMs, DVD-RWs, and DVD+RWs), magnetic tapes, non-volatile memory cards, and ROMs. Alternatively, the program code may be downloaded from a server computer via a communications network.

[0134] An embodiment of the present application also provides a computer program product, including computer instructions, which instruct a computing device to perform any corresponding operation in the above-mentioned multiple method embodiments.

[0135] It should be pointed out that, according to the needs of implementation, the various components / steps described in the embodiments of the present application can be split into more components / steps, or two or more components / steps or partial operations of components / steps can be combined into new components / steps to achieve the purpose of the embodiments of the present application.

[0136] The methods according to the embodiments of the present application described above can be implemented in hardware, firmware, or as software or computer code that can be stored in a recording medium (such as a CD ROM, RAM, floppy disk, hard disk, or magneto-optical disk), or as computer code originally stored in a remote recording medium or non-transitory machine-readable medium downloaded via a network and then stored in a local recording medium. Thus, the methods described herein can be stored in such software processing on a recording medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware (such as an ASIC or FPGA). It will be understood that a computer, processor, microprocessor controller, or programmable hardware includes a storage component (e.g., RAM, ROM, flash memory, etc.) that can store or receive software or computer code. When the software or computer code is accessed and executed by the computer, processor, or hardware, the methods described herein are implemented. In addition, when a general-purpose computer accesses the code for implementing the methods shown herein, the execution of the code transforms the general-purpose computer into a dedicated computer for performing the methods shown herein.

[0137] Those skilled in the art will appreciate that the units and method steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of this application.

[0138] Nouns and pronouns referring to persons in this patent application are not limited to a specific gender.

[0139] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the ideas and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A control device (100) for a compressor unit, the compressor unit comprising a vent valve (200) and a manual switch (103) that is manually triggered to control the opening or closing of the vent valve (200), characterized in that: The control device (100) comprises: A state determination unit (101) determines, based on an operating parameter related to the current operating state of the compressor group, whether the compressor group is currently in an operating state or a stopped state, and sends a first state signal corresponding to the current operating state of the compressor group or a second state signal corresponding to the current stopped state of the compressor group; The logic control unit (102) locks the closed state of the vent valve (200) and does not send an opening control signal for controlling the opening of the vent valve (200) to the vent valve (200) when receiving the first state signal sent by the state determination unit (101) and the manual opening signal for controlling the opening of the vent valve (200) sent by the manual switch (103) being manually triggered.

2. The control device (100) according to claim 1, characterized in that The logic control unit (102), upon receiving the first state signal sent by the state determination unit (101) and the manual opening signal sent when the manual switch (103) is manually triggered, locks the closed state of the vent valve (200) and sends a closing control signal to the vent valve (200) for controlling the vent valve (200) to close.

3. The control device (100) according to claim 2, characterized in that The logic control unit (102), upon receiving the second state signal sent by the state determination unit (101) and the manual opening signal sent when the manual switch (103) is manually triggered, releases the lock on the closed state of the vent valve (200) and sends the opening control signal to the vent valve (200).

4. The control device (100) according to claim 2, characterized in that The logic control unit (102) sends the closing control signal to the vent valve (200) when receiving the first state signal sent by the state determination unit (101) and the manual closing signal for controlling the vent valve (200) to be closed when the manual switch (103) is manually triggered.

5. The control device (100) according to claim 2, characterized in that The logic control unit (102) sends the closing control signal to the vent valve (200) when receiving the second state signal sent by the state determination unit (101) and the manual closing signal for controlling the vent valve (200) to be closed when the manual switch (103) is manually triggered.

6. The control device (100) according to any one of claims 1 to 5, characterized in that: The manual switch (103) includes an on button (11) and a off button (12), and the logic control unit (102) includes an AND gate (21), a NOT gate (22), an OR gate (23), and a reset trigger (24); The open button (11) is connected to one input end of the AND gate (21), the other input end of the AND gate (21) is connected to the output end of the NOT gate (22), the input end of the NOT gate (22) is connected to the output end of the state determination unit (101), and the output end of the AND gate (21) is connected to the reset end of the reset trigger (24); the close button (12) is connected to one input end of the OR gate (23), the other input end of the OR gate (23) is connected to the output end of the state determination unit (101), and the output end of the OR gate (23) is connected to the set end of the reset trigger (24); the output end of the reset trigger (24) is connected to the control end of the vent valve (200); When the state determination unit (101) sends the first state signal, and the open button (11) is manually triggered to send a manual open signal for controlling the opening of the vent valve (200), the NOT gate (22) sends a signal opposite to the first state signal to the AND gate (21) when receiving the first state signal, and the AND gate (21) sends a first valid signal to the reset trigger (24) when receiving the signal opposite to the first state signal and the manual open signal, and the OR gate (23) sends a second valid signal to the reset trigger (24) when receiving the first state signal; When the state determination unit (101) sends the second state signal and the open button (11) is manually triggered to send the manual open signal, the NOT gate (22) sends a signal opposite to the second state signal to the AND gate (21) when receiving the second state signal, the AND gate (21) sends the second valid signal to the reset flip-flop (24) when receiving the signal opposite to the second state signal and the manual open signal, and the OR gate (23) sends the first valid signal to the reset flip-flop (24) when receiving the second state signal; When the state determination unit (101) sends the first state signal, and the close button (12) is manually triggered to send a manual close signal for controlling the closing of the vent valve (200), the NOT gate (22) sends a signal opposite to the first state signal to the AND gate (21) when receiving the first state signal, and the AND gate (21) sends the first valid signal to the reset trigger (24) when receiving the signal opposite to the first state signal, and the OR gate (23) sends the second valid signal to the reset trigger (24) when receiving the first state signal and the manual close signal; When the state determination unit (101) sends the second state signal and the close button (12) is manually triggered to send the manual close signal, the NOT gate (22) sends a signal opposite to the second state signal to the AND gate (21) when receiving the second state signal, and the AND gate (21) sends the first valid signal to the reset trigger (24) when receiving the signal opposite to the second state signal, and the OR gate (23) sends the second valid signal to the reset trigger (24) when receiving the second state signal and the manual close signal; The reset trigger (24) sends a closing control signal to the vent valve (200) for controlling the vent valve (200) to be closed when receiving the first valid signal sent by the AND gate (21) and the second valid signal sent by the OR gate (23); and sends an opening control signal to the vent valve (200) for controlling the vent valve (200) to be opened when receiving the second valid signal sent by the AND gate (21) and the first valid signal sent by the OR gate (23).

7. A control method (300) for a compressor unit, the compressor unit comprising a vent valve (200) and a manual switch (103) that is manually triggered to control the opening or closing of the vent valve (200), characterized in that: The control method (300) includes: determining, based on operating parameters related to the current operating state of the compressor unit, whether the compressor unit is currently in an operating state or a stopped state; When it is determined that the compressor unit is currently in an operating state and the manual switch (103) is manually triggered to send a manual opening signal for controlling the opening of the vent valve (200), the closed state of the vent valve (200) is locked and no opening control signal for controlling the opening of the vent valve (200) is sent to the vent valve (200).

8. The control method (300) according to claim 7, characterized in that: The method of locking the closed state of the vent valve (200) without sending an opening control signal for controlling the opening of the vent valve (200) to the vent valve (200) further includes: The closed state of the vent valve (200) is locked and a closing control signal for controlling the vent valve (200) to be closed is sent to the vent valve (200).

9. The control method (300) according to claim 7, characterized in that: The method further comprises: When it is determined that the compressor unit is currently in a stopped state and the manual switch (103) is manually triggered to send a manual opening signal for controlling the opening of the vent valve (200), the lock on the closed state of the vent valve (200) is released and an opening control signal for controlling the opening of the vent valve (200) is sent to the vent valve (200).

10. The control method (300) according to claim 7, characterized in that: The method further comprises: When it is determined that the compressor unit is currently in an operating state and the manual switch (103) is manually triggered to send a closing / opening signal for controlling the vent valve (200) to close, a closing control signal for controlling the vent valve (200) to close is sent to the vent valve (200).

11. The control method (300) according to claim 7, characterized in that: The method further comprises: When it is determined that the compressor unit is currently in a stopped state and the manual switch (103) is manually triggered to send a closing / opening signal for controlling the vent valve (200) to close, a closing control signal for controlling the vent valve (200) to close is sent to the vent valve (200).

12. An electronic device (400), characterized in that The electronic device (400) comprises: a processor (402), a communication interface (404), a memory (406) and a communication bus (408), wherein the processor (402), the communication interface (404) and the memory (406) communicate with each other via the communication bus (408); the memory (406) is used to store at least one executable instruction, wherein the executable instruction enables the processor (402) to perform an operation corresponding to the control method for a compressor unit according to any one of claims 7 to 11.

13. A computer-readable storage medium, characterized in that A computer program is stored thereon, and when the computer program is executed by a processor, the control method for a compressor unit according to any one of claims 7 to 11 is implemented.

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