Process screw compressor control system and method

Abstract

The invention discloses a process screw compressor control system and method, and relates to the technical field of industrial gas compression equipment control, the compressor control system comprises a main control platform, a sensor control module, a man-machine interaction visualization module and a hardware control terminal, the compressor control system has the beneficial effects that the multiple man-machine interaction visualization modules are located at different geographic positions respectively, the compressor control system can automatically complete the whole process of starting, running and stopping of the compressor according to preset parameters, the labor intensity of operators and the risk of misoperation are reduced, and the working efficiency is improved. The compressor control system compatible unit supports data communication and protocol conversion with hardware devices of different versions, and sensors and devices can be deleted or added according to actual requirements, so that compressor control data and corresponding analysis results can be managed, visualized and stored conveniently, and the reliability of the compressor control system is improved. Compressor control management can be realized through Internet of Things cloud management and control, and the intelligent level of compressor control management is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial gas compression equipment control, in particular to a process screw compressor control system and method. BACKGROUND

[0002] Traditional process compressor control relies heavily on manual operation, with slow response, large errors, and potential safety hazards. Existing systems lack complete automatic start-stop processes and multi-parameter collaborative protection mechanisms, making it difficult to adapt to stable operation requirements in complex industrial environments.

[0003] Chinese Patent No. CN 214036124 U discloses an oil-injected screw compressor control system, the screw compressor comprising a screw main machine, a driving mechanism, a control circuit, an oil-gas separation tank, a cooling device, a plurality of valves, a sensor assembly, and a pipeline; the plurality of valves include a normally open intake valve, a first normally open electromagnetic valve, a second normally open electromagnetic valve, a third normally open electromagnetic valve, a safety valve, a temperature control valve, a first check valve, a second check valve, a minimum pressure valve, an oil drain valve, an oil return check valve, and a proportional valve; the sensor assembly includes a temperature sensor and a pressure sensor; the cooling device includes an oil cooler and an air aftercooler; the driving mechanism is connected to the screw main machine and can drive the screw main machine to act. The oil-injected screw compressor control system can reduce the unloaded power consumption of the unit and achieve energy saving.

[0004] In the above-mentioned scheme and prior art, the following problems still exist: The compressor control in the prior art has low automation, slow response, poor safety, and other problems, and the staff needs to frequently intervene in the start-stop process, which not only increases the labor intensity, but also easily causes equipment damage or safety accidents due to operation errors; There is a lack of perfect safety protection mechanisms and systematic monitoring means, making it difficult to achieve comprehensive perception and intelligent control of the compressor operating state, especially in dangerous gas leakage, pressure abnormalities, and liquid over-standard conditions, making it impossible to achieve rapid automatic shutdown and safety protection, posing a potential threat to property and personal safety, and thus causing many inconveniences.

[0005] Therefore, the present application needs to design a process screw compressor control system and method to solve the above-mentioned problems. SUMMARY

[0006] The purpose of the present application is to provide a process screw compressor control system and method that realizes automatic start-stop, multi-mode operation, and safety protection, significantly improves system reliability and operation efficiency, and solves the problems mentioned in the background art.

[0007] To solve the above problems, the present application provides a technical solution: A process screw compressor control system, the compressor control system includes a main control platform, a sensor control module, a man-machine interaction visualization module and a hardware control terminal, the main control platform is respectively with sensor control module, man-machine interaction visualization module and hardware control terminal communication connection, forms a closed loop control loop, the staff logs in the main control platform and thus enters the compressor control system inside, thus looks at the sensor control module, the man-machine interaction visualization module and the real-time running data of hardware control terminal one by one.

[0008] As preferred, the main control platform is used for manually setting the operation mode of the compressor control system, the operation mode includes automatic mode, debugging mode and emergency stop mode, the main control platform is used for realizing the control of automatic mode, debugging mode and emergency stop mode; The sensor control module is used for collecting, processing and transmitting various sensor data; The man-machine interaction visualization module is used for parameter setting and manual control, and provides a compressor control system state visualization interface; The hardware control terminal is used for receiving control instructions and driving corresponding execution equipment to start, while the distributed position of the execution equipment is monitored and processed in real time.

[0009] As preferred, the main control platform includes an automatic mode unit, a debugging mode unit and an emergency stop mode unit, the automatic mode unit, the debugging mode unit and the emergency stop mode unit are bidirectionally communicated with the main control platform, and each unit automatically switches the working mode according to the system state.

[0010] As preferred, the automatic mode unit is used for realizing the automatic operation control of the compressor; The debugging mode unit is used for allowing the opening and closing state of each motor and valve to be manually controlled through the touch screen; The emergency stop mode unit is used for opening the discharge electromagnetic valve immediately, closing the inlet valve and stopping all equipment when triggered.

[0011] As preferred, the sensor control module includes a sensor control unit, an equipment execution unit and a sensor data acquisition unit, the sensor control unit is used for controlling the working state of various sensors, the sensors include pressure sensors, liquid level sensors and gas concentration sensors, and the sensors can be deleted, added or reduced according to requirements; The equipment execution unit is used for automatically executing start-stop, frequency regulation and valve control operation according to the set parameters and sensor feedback, and the equipment includes screw main motor, electric butterfly valve, discharge electromagnetic valve, exhaust electromagnetic valve and exhaust fan motor; The sensor data acquisition unit is used for collecting and pre-processing the data received by each sensor in real time, filtering the risk data, and manually presetting the automatic filtering data type.

[0012] As preferred, the man-machine interaction visualization module comprises a visualization unit, a man-machine interaction unit, and a report generation unit, the visualization unit and the man-machine interaction unit are in bidirectional communication connection, and the report generation unit is integrated in the interior of the visualization unit. The visualization unit is used for displaying the running state, parameters, and alarm information of the compressor control system in real time, and imaging through a table mode for manual comparison and analysis of multiple groups of data. The man-machine interaction unit is used for receiving operation instructions, inputting corresponding parameter settings, and flexibly setting the interaction interface to reduce the occurrence of accidental touch. The report generation unit is used for generating corresponding running logs, alarm records, and statistical reports for the received compressor control data, so as to view the overall process of the compressor control system.

[0013] As preferred, the hardware control terminal comprises a liquid and gas concentration control unit, a hardware control unit, and a system compatible unit, the liquid and gas concentration control unit is used for constructing a field safety protection monitoring process and monitoring the data changes of liquid, gas, etc. in different positions in real time. The hardware control unit is used for driving the corresponding execution equipment to run and monitoring its working state, installation position, and maintenance data, so as to accurately control each hardware device. The system compatible unit is used for realizing data communication and protocol conversion between each version of hardware device and the compressor control system.

[0014] A process screw compressor control method comprises the following specific steps: S1, manually setting the running parameters of the compressor control system, and initializing all valve states to the closed state to complete the self-checking of the compressor control system; S2, selecting an automatic running mode through the main control platform, and the system executes according to the preset process; S3, when a debugging mode is selected, manually controlling each execution equipment through a touch screen, including independently starting and stopping the screw main motor, the exhaust fan motor, the electric butterfly valve, and each electromagnetic valve, for debugging and maintaining the compressor control system; S4, monitoring the gas concentration and each liquid parameter in real time, when the gas concentration exceeds the standard, the liquid is abnormal, or an emergency stop signal is triggered, immediately entering an emergency processing program, opening the discharge electromagnetic valve, closing the inlet valve, stopping all equipment running, and starting the exhaust fan, and generating an alarm record and a system state report.

[0015] Preferably, the artificially set operating parameters in S1 include an inlet liquid high-low threshold value, an automatic shutdown exhaust pressure value, an oil separation liquid high-low threshold value, a gas concentration alarm value, an electric butterfly valve delayed opening time and a delay time in each stage during the shutdown process.

[0016] Preferably, the step S2 includes the following operating stages: A start-up stage: the main screw motor is started up at a minimum frequency, the electric butterfly valve is opened after a preset delay time, and the main motor frequency is gradually adjusted to a suitable value in the range of 30-65 Hz; An operating stage: the main motor frequency is dynamically adjusted by a PID algorithm to maintain the exhaust pressure in a set range; at the same time, the opening and closing of the corresponding liquid discharge electromagnetic valve is controlled according to the data of each liquid level sensor; A shutdown stage: after receiving a shutdown instruction, the main motor is reduced to a minimum frequency, the relief electromagnetic valve is opened, the electric butterfly valve is closed after a preset delay time, and finally the main motor is stopped and all valves are closed.

[0017] The beneficial effects of the present application are: in actual application, multiple human-computer interaction visualization modules are used in cooperation with the main control platform, the sensor control module and the hardware control terminal, the multiple human-computer interaction visualization modules are located at different geographical positions, the compressor control system can automatically complete the whole process of starting, running and stopping of the compressor according to preset parameters, the labor intensity and operation error risk of the operator are reduced, the key parameters such as pressure, liquid and gas concentration are monitored in real time through the sensor control module and the hardware control terminal, the pressure can be quickly relieved and the inlet can be cut off in the emergency shutdown mode, dangerous working conditions such as equipment starting under pressure are avoided, the safety of equipment and personnel is ensured, the main control platform, the sensor module, the human-computer interaction module and the hardware terminal are integrated in the compressor control system to form a closed loop control circuit, the whole process of accurate control of data acquisition, processing, execution and feedback is realized, the compressor control system compatible unit supports data communication and protocol conversion with different versions of hardware devices, sensors and equipment can be reduced or added according to actual needs, thereby facilitating the management, visualization and storage of compressor control data and the corresponding analysis results, and helping to realize compressor control management through Internet of Things cloud management and control and improving the intelligent level of compressor control management. BRIEF DESCRIPTION OF DRAWINGS

[0018] For ease of illustration, the present application is described in detail by the following specific implementation and drawings.

[0019] Figure 1 is a whole structure topology diagram of a process screw compressor control system and method of the present application; Figure 2 is a step flow chart of a process screw compressor control system and method of the present application; Figure 3 is an automatic start flow chart of the process screw compressor control system and method of the present application; Figure 4 is an automatic stop flow chart of the process screw compressor control system and method of the present application; Figure 5 is a debugging mode operation interface diagram of the process screw compressor control system and method of the present application; Figure 6 is a valve initial state diagram of the process screw compressor control system and method of the present application; Figure 7 is an emergency stop flow chart of the process screw compressor control system and method of the present application. DETAILED DESCRIPTION

[0020] As shown in Figures 1-7 , the present detailed embodiment adopts the following technical solution: A process screw compressor control system, the compressor control system comprising a main control platform, a sensor control module, a man-machine interactive visualization module and a hardware control terminal, the main control platform being in communication connection with the sensor control module, the man-machine interactive visualization module and the hardware control terminal respectively, forming a closed loop control circuit, a worker logging into the main control platform thereby entering the inside of the compressor control system, thereby viewing the real-time running data of the sensor control module, the man-machine interactive visualization module and the hardware control terminal one by one, the main control platform being used for manually setting the operation mode of the compressor control system, the operation mode comprising an automatic mode, a debugging mode and an emergency stop mode, the main control platform being used for realizing the control of the automatic mode, the debugging mode and the emergency stop mode; the sensor control module being used for collecting, processing and transmitting various sensor data; the man-machine interactive visualization module being used for parameter setting and manual control, and providing a state visualization interface of the compressor control system; the hardware control terminal being used for receiving control instructions and driving the corresponding execution equipment to start, while real-time monitoring and processing the distributed position and running data of the execution equipment.

[0021] The main control platform comprises an automatic mode unit, a debugging mode unit and an emergency stop mode unit, the automatic mode unit, the debugging mode unit and the emergency stop mode unit all being in bidirectional communication connection with the main control platform, each unit automatically switching the working mode according to the system state, the automatic mode unit being used for realizing the automatic running control of the compressor; A pressure sensor (the pressure sensor model comprising PT102, PT103, PT104); Start-up phase: the main motor starts under light load, the electric butterfly valve is opened after a delay, and the frequency is gradually increased to the target pressure; Running stage: According to the PT103 pressure regulating main motor frequency, maintain the exhaust pressure in the set range; Shutdown stage: The main motor is reduced to the minimum frequency, the relief electromagnetic valve is opened, the electric butterfly valve is closed with delay, and finally the main motor is stopped and all valves are closed; The debugging mode unit is used to allow manual control of the on-off state of each motor and valve through the touch screen; the emergency shutdown mode unit is used to immediately open the relief electromagnetic valve, close the inlet valve, and stop all equipment when triggered.

[0022] The sensor control module includes a sensor control unit, a device execution unit, and a sensor data acquisition unit. The output of the sensor data acquisition unit is communicatively connected to the input of the sensor control unit, and the sensor control unit is bidirectionally communicatively connected to the device execution unit. The sensor control unit is used to control the working state of various sensors, including pressure sensors (PT102, PT103, PT104), liquid level sensors, and gas concentration sensors. The sensors can be reduced or added according to the needs. The device execution unit is used to automatically execute start-stop, frequency adjustment, and valve control operations according to the set parameters and sensor feedback. The devices include screw main motor, electric butterfly valve, relief electromagnetic valve, exhaust electromagnetic valve, and exhaust fan motor. The sensor data acquisition unit is used to collect and preprocess the data received by each sensor in real time, filter the risk data, and manually preset the type of automatically filtered data.

[0023] The human-computer interaction visualization module includes a visualization unit, a human-computer interaction unit, and a report generation unit. The visualization unit and the human-computer interaction unit are bidirectionally communicatively connected, and the report generation unit is integrated inside the visualization unit. The visualization unit is used to display the running state, parameters, and alarm information of the compressor control system in real time, and can be imaged in table form for manual comparison and analysis of multiple groups of data. The human-computer interaction unit is used to receive operation instructions, input corresponding parameter settings, and flexibly set the interaction interface to reduce the occurrence of accidental touch. The report generation unit is used to generate corresponding running logs, alarm records, and statistical reports for the received compressor control data, so as to view the overall process of the compressor control system.

[0024] The hardware control terminal includes a liquid and gas concentration control unit, a hardware control unit, and a system compatibility unit. The hardware control unit and the system compatibility unit are bidirectionally communicatively connected. The liquid and gas concentration control unit is used to build a field safety protection monitoring process and monitor and process the data changes of liquids and gases at different positions in real time. The liquid inlet electromagnetic valve is opened when the liquid inlet is high, and is closed when the liquid inlet is low. Alarm or stop signal when oil liquid level is high or low; Automatic stop and start exhaust fan when gas concentration is too high; All valves are initially closed; The hardware control unit is used to drive the corresponding execution device to run and monitor its working state, installation position, maintenance data, so as to accurately control each hardware device; the system compatible unit is used to realize data communication and protocol conversion of each version of hardware device and compressor control system.

[0025] A process screw compressor control method, comprising the following specific steps: S1, manually set the compressor control system operating parameters, and initialize all valve states to the normally closed position, complete the compressor control system self-checking, and manually set the operating parameters including the inlet liquid level threshold, automatic stop exhaust pressure value, oil separation liquid level threshold, gas concentration alarm value, electric butterfly valve delay opening time and delay time in the shutdown process; S2, select automatic operation mode through the main control platform, and the system executes according to the preset process, and the running stage is: Start-up stage: control the screw main motor to start up at the minimum frequency, open the electric butterfly valve after a preset delay time, and then gradually adjust the main motor frequency to an appropriate value in the range of 30-65Hz with PT103 pressure value 0.6MPa as the target; Running stage: real-time monitor the PT103 pressure value, dynamically adjust the main motor frequency through PID algorithm to maintain the exhaust pressure in the set range; at the same time, control the opening and closing of the corresponding liquid discharge electromagnetic valve according to the data of each liquid level sensor; Shutdown stage: after receiving the shutdown instruction, the main motor is reduced to the minimum frequency, the discharge electromagnetic valve is opened, the electric butterfly valve is closed after a preset delay time, and finally the main motor is stopped and all valves are closed; S3, when the debugging mode is selected, manually control each execution device through the touch screen, including independently starting and stopping the screw main motor, exhaust fan motor, electric butterfly valve and each electromagnetic valve, which is used for compressor control system debugging and maintenance; S4, real-time monitor the gas concentration and each liquid parameter, when the gas concentration is detected to be out of standard, the liquid is abnormal or the emergency shutdown signal is triggered, immediately enter the emergency processing program, open the discharge electromagnetic valve, close the inlet valve, stop all devices running, and start the exhaust fan, at the same time, generate alarm record and system state report. Embodiment

[0026] When the compressor control system is connected to the oilfield associated gas recovery management: S1, in this project, the compressor control system for compression treatment of associated gas, compressor control system installed, staff first through the man-machine interaction visual module touch screen login system, initialization settings: set the intake liquid high threshold of 85%, low threshold of 15%, oil liquid high alarm value of 90%, low shutdown value of 10%, gas concentration alarm value of 25% LEL, automatic stop exhaust pressure (PAH-102) is set to 0.75 MPa, electric butterfly valve delay open time of 5 seconds, the delay closing time of 6 seconds during shutdown, all valves are initialized to normally closed state, the compressor control system self-checking through the standby mode; S2, in the daily operation, the compressor control system selects automatic mode, the staff press the start button, the compressor control system executes automatic start process: Screw main motor with minimum frequency (30 Hz) light load start, 5 seconds after the electric butterfly valve is automatically opened, the main motor starts to take PT103 pressure sensor reading (target value 0.6 MPa) as the control target, through the PID algorithm, the final stable operation in 52 Hz or so, the exhaust pressure is maintained at 0.59-0.61 MPa. During operation, the intake liquid meter detects that the liquid reaches 85%, the compressor control system automatically opens the intake drain electromagnetic valve to drain; When the liquid drops to 15%, it is automatically closed. The system continues to run stably; When receiving the stop command, the compressor control system enters the automatic shutdown process: the main motor starts to reduce the frequency to 30 Hz, and the relief electromagnetic valve is immediately opened for pressure relief; Delay 4 seconds, the electric butterfly valve starts to close; Delay 5 seconds, the main motor stops completely; Delay 6 seconds, detect PT102 pressure confirmation for 0, then close the relief electromagnetic valve and exhaust electromagnetic valve, all equipment stop running, complete the safety shutdown; During equipment maintenance, the staff switch to debugging mode, manually operate the interface through the touch screen, and test the switch state of the exhaust fan motor, electric butterfly valve and each electromagnetic valve in turn, confirm that all actuators are normal, and facilitate preventive maintenance; S3, when the compressor control system monitors the gas concentration sensor reading suddenly rises to 28% LEL (more than the set alarm value), the liquid and gas concentration control unit triggers the safety protection program immediately: the compressor control system automatically enters the emergency shutdown state, the main motor stops immediately, the relief electromagnetic valve opens, the intake valve closes, and the exhaust fan starts automatically to force ventilation, the man-machine interaction interface pops up a red alarm window and generates detailed alarm record, completes a process.

[0027] Specifically: in actual application, multiple man-machine interaction visualization modules are used in cooperation with the main control platform, the sensor control module and the hardware control terminal, and the multiple man-machine interaction visualization modules are located at different geographical positions, the main control platform, the sensor control module, the man-machine interaction visualization module and the hardware control terminal are arranged, a perfect compressor control system is constructed, in actual use, the automatic mode, the debugging mode and the emergency shutdown mode are intelligently switched and controlled through the main control platform, the compressor control system can automatically complete the starting, running and stopping of the compressor according to preset parameters, the labor intensity and the operation error risk of the operator are reduced, the key parameters such as pressure, liquid and gas concentration are monitored in real time through the sensor control module and the hardware control terminal, the pressure can be quickly discharged and the air intake can be cut off in the emergency shutdown mode, dangerous working conditions such as equipment starting under pressure are avoided, the safety of equipment and personnel is ensured, the main control platform, the sensor module, the man-machine interaction module and the hardware terminal are integrated in the compressor control system to form a closed loop control circuit, the whole process of accurate control of data acquisition, processing, execution and feedback is realized, the compressor control system compatible unit supports data communication and protocol conversion with hardware devices of different versions, the sensors and devices can be reduced or added according to actual needs, so that the compressor control data and the corresponding analysis results can be managed, visualized and stored, and the intelligent level of compressor control management can be improved.

[0028] Those skilled in the art can appreciate that the modules and method steps of the examples described in combination with the embodiments disclosed herein can be realized in electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. Professionals can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0029] The modules as the main control platform, sensor control, man-machine interaction visualization and hardware control terminal can or can not be physically separated, and the components displayed as modules can or can not be physical units, that is, they can be located in one place or distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0030] In addition, it should be noted that the combination of technical features in the case is not limited to the combination of claims in the case or the combination of embodiments described in the case, and all technical features described in the case can be freely combined or combined in any way, unless contradictory to each other.

[0031] It should be noted that the above merely illustrates the specific embodiments of the present application, and obviously the present application is not limited to the above embodiments, and has many similar changes. All the changes directly derived or thought from the disclosure of the present application by those skilled in the art shall belong to the protection scope of the present application.

[0032] The above merely illustrates the preferred embodiments of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A process screw compressor control system, characterized by, The compressor control system comprises a main control platform, a sensor control module, a man-machine interactive visualization module and a hardware control terminal, the main control platform is in communication connection with the sensor control module, the man-machine interactive visualization module and the hardware control terminal respectively, forming a closed loop control circuit, and a worker logs in the main control platform to enter the inside of the compressor control system, and then views the real-time running data of the sensor control module, the man-machine interactive visualization module and the hardware control terminal one by one.

2. The process screw compressor control system according to claim 1, characterized in that: The main control platform is used for manually setting the operation mode of the compressor control system, and the operation mode comprises an automatic mode, a debugging mode and an emergency shutdown mode, and the main control platform is used for realizing the control of the automatic mode, the debugging mode and the emergency shutdown mode; The sensor control module is used for collecting, processing and transmitting various sensor data; The man-machine interactive visualization module is used for parameter setting and manual control, and provides a state visualization interface of the compressor control system; The hardware control terminal is used for receiving control instructions and driving corresponding execution equipment to start, and simultaneously monitoring and processing the distributed position and running data of the execution equipment.

3. The process screw compressor control system of claim 1, wherein: The main control platform comprises an automatic mode unit, a debugging mode unit and an emergency shutdown mode unit, and the automatic mode unit, the debugging mode unit and the emergency shutdown mode unit are in bidirectional communication connection with the main control platform, and each unit automatically switches the working mode according to the system state.

4. The process screw compressor control system according to claim 3, characterized in that: The automatic mode unit is used for realizing the automatic operation control of the compressor; The debugging mode unit is used for allowing the opening and closing states of each motor and valve to be manually controlled through a touch screen; The emergency shutdown mode unit is used for immediately opening a discharge electromagnetic valve, closing an air inlet valve and stopping all equipment when triggered.

5. The process screw compressor control system of claim 1, wherein: The sensor control module comprises a sensor control unit, an equipment execution unit and a sensor data collection unit, the output end of the sensor data collection unit is in communication connection with the input end of the sensor control unit, and the sensor control unit is in bidirectional communication connection with the equipment execution unit; The sensor control unit is used for controlling the working state of various sensors, the sensors comprise pressure sensors, liquid level sensors and gas concentration sensors, and the sensors can be reduced or added according to requirements; The equipment execution unit is used for automatically executing start-stop, frequency adjustment and valve control operation according to set parameters and sensor feedback, and the equipment comprises a screw main motor, an electric butterfly valve, a discharge electromagnetic valve, an exhaust electromagnetic valve and an exhaust fan motor; The sensor data collection unit is used for collecting the data received by each sensor in real time and pre-processing, filtering the risk data, and manually presetting the data type of automatic filtering.

6. The process screw compressor control system of claim 1, wherein: The man-machine interactive visualization module comprises a visualization unit, a man-machine interactive unit and a report generation unit, the visualization unit and the man-machine interactive unit are in bidirectional communication connection, and the report generation unit is integrated in the inside of the visualization unit. The visualization unit is used to display the running state, parameters and alarm information of the compressor control system in real time; The human-computer interaction unit is used to receive operation instructions and input corresponding parameter settings; The report generation unit is used to generate corresponding running logs, alarm records and statistical reports for the received compressor control data.

7. The process screw compressor control system of claim 1, wherein: The hardware control terminal includes a liquid and gas concentration control unit, a hardware control unit and a system compatibility unit, and the hardware control unit and the system compatibility unit are bidirectionally communicated and connected; The liquid and gas concentration control unit is used to construct a field safety protection monitoring process and to perform real-time monitoring and processing on the data changes of liquids, gases and the like at different positions; The hardware control unit is used to drive the corresponding execution equipment to run and monitor its working state, installation position and maintenance data, so as to accurately control each hardware equipment; The system compatibility unit is used to realize data communication and protocol conversion between each version of hardware equipment and the compressor control system.

8. A process screw compressor control method for implementing a process screw compressor control system according to any one of claims 1 to 7, characterized by The following specific steps are included: S1, manually setting the running parameters of the compressor control system, and initializing all valve states to the closed state, completing self-checking of the compressor control system; S2, selecting an automatic running mode through the main control platform, and the system executes according to the preset process; S3, when a debugging mode is selected, manually controlling each execution equipment through a touch screen, including independently starting and stopping the screw main motor, the exhaust fan motor, the electric butterfly valve and each electromagnetic valve, for debugging and maintenance of the compressor control system; S4, real-time monitoring of gas concentration and liquid parameters, when the gas concentration exceeds the standard, the liquid is abnormal or an emergency stop signal is triggered, an emergency processing program is immediately entered, the relief electromagnetic valve is opened, the inlet valve is closed, all equipment is stopped, and the exhaust fan is started, and an alarm record and a system state report are generated.

9. The process screw compressor control method of claim 1, wherein: The manually set running parameters in S1 include inlet liquid high and low threshold values, automatic stop exhaust pressure value, oil separation liquid high and low threshold values, gas concentration alarm value, electric butterfly valve delay opening time and delay time in each stage during the stop process.

10. The process screw compressor control method of claim 9, wherein: The step S2 includes the following running stages: Start-up stage: control the screw main motor to start up at a minimum frequency, open the electric butterfly valve after a preset delay time, and gradually adjust the main motor frequency to a suitable value in the range of 30-65 Hz; Running stage: control the opening and closing of the corresponding liquid discharge electromagnetic valve according to the data of each liquid level sensor; Shutdown stage: after receiving a shutdown instruction, the main motor is reduced to a minimum frequency, the relief electromagnetic valve is opened, the electric butterfly valve is closed after a preset delay time, and finally the main motor is stopped and all valves are closed.

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