Gas valve opening control method and system

Abstract

The invention relates to the technical field of valve control, in particular to a gas valve opening control method and system.The gas valve opening control system comprises a central control module, a flow detection module, an opening detection module, a leakage detection module, a remote communication module, an execution module and an emergency cut-off module; a manager sets a gas flow target value through the remote communication module; the flow detection module detects gas flow data in a gas pipeline, the opening detection module detects opening data of a gas valve, and the central control module generates an opening adjusting signal according to the difference between the gas flow data and a gas flow target value and sends the opening adjusting signal to the execution module. The execution module correspondingly adjusts the opening degree of the gas valve and judges whether the opening degree of the gas valve is adjusted in place or not according to the opening degree data of the gas valve; therefore, the opening degree of the gas valve can be controlled more accurately according to requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of valve control, and particularly to a method and system for controlling the opening degree of a gas valve. Background Art

[0002] With the acceleration of the urbanization process, gas, as a clean energy, is increasingly widely used in daily life and industrial production.

[0003] When the opening degree control system of the gas valve in the prior art performs opening degree control, generally, a flow sensor is used to detect the gas flow in the gas pipeline, and the opening degree of the gas valve is adjusted according to the feedback gas flow so that the gas flow in the gas pipeline reaches the target value; during specific adjustment, the flow sensor continuously detects the gas flow, feeds it back to the central control device, and then controls the actuator to continuously adjust the opening degree of the gas valve. After the flow sensor detects that the gas flow reaches the target value, a signal is immediately sent to the central control device to control the actuator to stop adjusting the opening degree of the gas valve.

[0004] However, adopting the above method, due to fluid inertia and pipeline resistance, during the process of adjusting the opening degree of the gas valve, the gas flow will fluctuate. If the opening degree adjustment is immediately stopped when the gas flow at a certain moment reaches the target value, the gas flow value after stabilization will deviate from the target value. Summary of the Invention

[0005] The purpose of the present invention is to provide a method and system for controlling the opening degree of a gas valve, which can more accurately control the opening degree of the gas valve according to requirements.

[0006] To achieve the above purpose, in a first aspect, the present invention provides a gas valve opening degree control system, including a central control module, a flow detection module, an opening degree detection module, a leakage detection module, a remote communication module, an execution module, and an emergency cut-off module;

[0007] The flow detection module, the opening degree detection module, the leakage detection module, the remote communication module, the execution module, and the emergency cut-off module are all connected to the central control module;

[0008] The flow detection module is used to detect the gas flow in the gas pipeline and feed the gas flow data back to the central control module;

[0009] The opening degree detection module is used to detect the opening degree of the gas valve and feed the gas valve opening degree data back to the central control module;

[0010] The leakage detection module is used to detect whether there is a leakage in the gas pipeline. If there is a leakage, it sends a danger signal to the central control module;

[0011] The remote communication module is used for managers to remotely view and set parameters;

[0012] The central control module is used to compare the gas flow data with the gas flow target value, and generate an opening adjustment signal according to the difference between the gas flow data and the gas flow target value, and send it to the execution module; and judge whether the opening of the gas valve is adjusted in place through the gas valve opening data; at the same time, when receiving a danger signal, it sends a cut-off signal to the emergency cut-off module;

[0013] The execution module is used to receive the opening adjustment signal and correspondingly adjust the opening of the gas valve;

[0014] The emergency cut-off module is used to urgently cut off the gas supply of the gas pipeline after receiving the cut-off signal.

[0015] Among them, the central control module includes a data processing unit, a decision-making unit and a log unit; the decision-making unit is connected to the data processing unit; the log unit is connected to the decision-making unit;

[0016] The data processing unit receives various data and signals in real time and processes them;

[0017] The decision-making unit is used to compare the gas flow data with the gas flow target value, and generate an opening adjustment signal according to the difference between the gas flow data and the gas flow target value, and send it to the execution module; and judge whether the opening of the gas valve is adjusted in place through the gas valve opening data; at the same time, when receiving a danger signal, it sends a cut-off signal to the emergency cut-off module;

[0018] The log unit is used to record the overall operation status and operation logs for subsequent analysis and maintenance.

[0019] Among them, the flow detection module includes a flow sensor unit and a temperature compensation unit; the temperature compensation unit is connected to the flow sensor unit;

[0020] The flow sensor unit is used to measure the gas flow in the gas pipeline to obtain a flow measurement value;

[0021] The temperature compensation unit is used to dynamically correct the flow measurement value based on the temperature of the gas and output an accurate gas flow data.

[0022] Among them, the opening degree detection module includes an angle encoder unit, a redundancy detection unit, and a cross-validation unit; the cross-validation unit is respectively connected to the angle encoder unit and the redundancy detection unit;

[0023] The angle encoder unit is used to detect the opening degree of the gas valve through an absolute magnetic encoder, and obtain a first opening degree measurement value;

[0024] The redundancy detection unit is used to detect the opening degree of the gas valve through a laser displacement sensor, and obtain a second opening degree measurement value;

[0025] The cross-validation unit is used to compare the first opening degree measurement value and the second opening degree measurement value. If they are consistent, it outputs the gas valve opening degree data. If they are inconsistent, it sends a maintenance signal to the central control module.

[0026] Among them, the leakage detection module includes a gas sensor unit and an alarm unit; the alarm unit is connected to the gas sensor unit;

[0027] The gas sensor unit is used to detect the gas concentration in the air at the easily leakable position of the gas pipeline through a gas sensor, and send it to the alarm unit;

[0028] The alarm unit is used to preset a minimum value of the gas concentration in the air. When the gas sensor unit detects that the gas concentration in the air at a certain position reaches this minimum value, it immediately generates a danger signal and sends it to the central control module.

[0029] Among them, the remote communication module includes a communication transmission unit, a user interface unit, and a security authentication unit; the user interface unit is connected to the communication transmission unit; the security authentication unit is connected to the user interface unit;

[0030] The communication transmission unit is used to perform data transmission with the central control module;

[0031] The user interface unit is used to provide a user interface for management personnel to view and set parameters;

[0032] The security authentication unit is used to set a user name and password to ensure security and prevent unauthorized access.

[0033] Among them, the emergency cut-off module includes a cut-off valve unit and an emergency unit; the emergency unit is connected to the cut-off valve unit;

[0034] The cut-off valve unit is used to immediately cut off the gas supply of the gas pipeline after receiving a danger signal;

[0035] The emergency unit is used to use the storage battery as an emergency power source to ensure that the cut-off valve unit still has sufficient power support in case of emergency.

[0036] In a second aspect, the present invention provides a method for controlling the opening degree of a gas valve, including:

[0037] The management personnel set a gas flow target value through the remote communication module;

[0038] The flow detection module detects the gas flow data in the gas pipeline and feeds it back to the central control module;

[0039] The opening degree detection module detects the opening degree data of the gas valve and feeds it back to the central control module;

[0040] The leakage detection module detects whether the gas pipeline leaks. If there is a leak, it sends a danger signal to the central control module;

[0041] The central control module compares the gas flow data with the gas flow target value, and generates an opening degree adjustment signal according to the difference between the gas flow data and the gas flow target value, and sends it to the execution module. The execution module adjusts the opening degree of the gas valve accordingly, and judges whether the opening degree of the gas valve is adjusted in place through the gas valve opening degree data; at the same time, when receiving the danger signal, it sends a cut-off signal to the emergency cut-off module to cut off the gas supply of the gas pipeline.

[0042] A method and system for controlling the opening degree of a gas valve according to the present invention. The flow detection module accurately detects the flow rate in the gas pipeline by using a flow sensor; the opening degree detection module detects the opening degree of the gas valve by using an opening degree sensor; the leakage detection module uses a plurality of gas sensors, and the plurality of gas sensors are installed at the positions where the gas pipeline is prone to leakage to detect whether there is gas leakage. If so, a danger signal is sent to the central control module, and the central control module sends a cut-off signal to the emergency cut-off module. The emergency cut-off module urgently cuts off the gas supply of the gas pipeline. At the same time, the management personnel can also observe the gas leakage situation through the remote communication module, so as to arrange personnel for maintenance in time; the execution module uses a driver such as a motor to adjust the opening degree of the gas valve, and the emergency cut-off module is an emergency cut-off gas solenoid valve, which immediately cuts off the gas supply after receiving the cut-off signal; the central control module is built-in with an algorithm model of the gas valve opening degree and the gas flow rate, and the algorithm model can be obtained by training according to historical test data; the algorithm model can calculate the specific value required for adjusting the opening degree of the gas valve according to the difference between the gas flow rate target value input by the management personnel and the current gas flow rate data, and then generate an opening degree adjustment signal and send it to the execution module. The execution module adjusts the opening degree of the gas valve, and the opening degree detection module is used to detect the opening degree data of the gas valve. Therefore, the central control module can judge whether the opening degree of the gas valve is adjusted in place. After the adjustment is in place, the execution module stops adjusting. After waiting for a period of time for the gas to stabilize, the flow detection module can be used to detect whether the gas flow rate reaches the target value; thus, the opening degree of the gas valve can be controlled more accurately according to the demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0044] Figure 1 It is a schematic structural diagram of the first embodiment of the present invention.

[0045] Figure 2 It is a schematic structural diagram of the central control module of the first embodiment of the present invention.

[0046] Figure 3 It is a schematic structural diagram of the flow detection module of the first embodiment of the present invention.

[0047] Figure 4 It is a schematic structural diagram of the opening degree detection module of the first embodiment of the present invention.

[0048] Figure 5 It is a schematic structural diagram of the leakage detection module of the first embodiment of the present invention.

[0049] Figure 6 It is a schematic structural diagram of the remote communication module according to the first embodiment of the present invention.

[0050] Figure 7 It is a schematic structural diagram of the emergency cut-off module according to the first embodiment of the present invention.

[0051] Figure 8 It is a schematic flowchart of the second embodiment of the present invention.

[0052] 1 - Central control module, 2 - Flow detection module, 3 - Opening detection module, 4 - Leakage detection module, 5 - Remote communication module, 6 - Execution module, 7 - Emergency cut-off module, 11 - Data processing unit, 12 - Decision-making unit, 13 - Log unit, 21 - Flow sensor unit, 22 - Temperature compensation unit, 31 - Angle encoder unit, 32 - Redundancy detection unit, 33 - Cross-validation unit, 41 - Gas sensor unit, 42 - Alarm unit, 51 - Communication transmission unit, 52 - User interface unit, 53 - Security authentication unit, 71 - Cut-off valve unit, 72 - Emergency unit. Detailed implementation manners

[0053] The first embodiment of this application is as follows:

[0054] Please refer to Figures 1-7 , wherein Figure 1 It is a schematic structural diagram of the first embodiment of the present invention. Figure 2 It is a schematic structural diagram of the central control module according to the first embodiment of the present invention. Figure 3 It is a schematic structural diagram of the flow detection module according to the first embodiment of the present invention. Figure 4 It is a schematic structural diagram of the opening detection module according to the first embodiment of the present invention. Figure 5 It is a schematic structural diagram of the leakage detection module according to the first embodiment of the present invention. Figure 6 It is a schematic structural diagram of the remote communication module according to the first embodiment of the present invention. Figure 7 It is a schematic structural diagram of the emergency cut-off module according to the first embodiment of the present invention.

[0055] The present invention provides a gas valve opening control system, which includes a central control module 1, a flow rate detection module 2, an opening detection module 3, a leakage detection module 4, a remote communication module 5, an execution module 6, and an emergency cut-off module 7. The central control module 1 includes a data processing unit 11, a decision-making unit 12, and a log unit 13. The flow rate detection module 2 includes a flow rate sensor unit 21 and a temperature compensation unit 22. The opening detection module 3 includes an angle encoder unit 31, a redundancy detection unit 32, and a cross-validation unit 33. The leakage detection module 4 includes a gas sensor unit 41 and an alarm unit 42. The remote communication module 5 includes a communication transmission unit 51, a user interface unit 52, and a security authentication unit 53. The emergency cut-off module 7 includes a cut-off valve unit 71 and an emergency unit 72. Through the foregoing solution, the opening of the gas valve can be controlled more accurately according to requirements.

[0056] Further, the flow rate detection module 2, the opening detection module 3, the leakage detection module 4, the remote communication module 5, the execution module 6, and the emergency cut-off module 7 are all connected to the central control module 1.

[0057] The flow rate detection module 2 is used to detect the gas flow rate in the gas pipeline and feed back the gas flow rate data to the central control module 1.

[0058] The opening detection module 3 is used to detect the opening of the gas valve and feed back the gas valve opening data to the central control module 1.

[0059] The leakage detection module 4 is used to detect whether there is a leakage in the gas pipeline. If there is a leakage, a danger signal is sent to the central control module 1.

[0060] The remote communication module 5 is used for managers to remotely view and set parameters.

[0061] The central control module 1 is used to compare the gas flow rate data with the gas flow rate target value, generate an opening adjustment signal according to the difference between the gas flow rate data and the gas flow rate target value, and send it to the execution module 6. It also judges whether the opening of the gas valve is adjusted in place through the gas valve opening data. At the same time, when receiving the danger signal, a cut-off signal is sent to the emergency cut-off module 7.

[0062] The execution module 6 is used to receive the opening adjustment signal and accordingly adjust the opening of the gas valve.

[0063] The emergency cut-off module 7 is used to urgently cut off the gas supply of the gas pipeline after receiving the cut-off signal.

[0064] In this embodiment, the flow detection module 2 uses a flow sensor to accurately detect the flow rate in the gas pipeline; the opening detection module 3 uses an opening sensor to detect the opening of the gas valve; the leakage module uses multiple gas sensors, and the multiple gas sensors are installed at the positions where the gas pipeline is prone to leakage to detect whether there is gas leakage. If there is, a danger signal is sent to the central control module 1. The central control module 1 sends a cut-off signal to the emergency cut-off module 7. The emergency cut-off module 7 urgently cuts off the gas supply of the gas pipeline. At the same time, the management personnel can also observe the gas leakage situation through the remote communication module 5, so as to arrange personnel for maintenance in time; the execution module 6 uses a driver such as a motor to adjust the opening of the gas valve. The emergency cut-off module 7 is an emergency cut-off gas solenoid valve, which immediately cuts off the gas supply after receiving the cut-off signal; the central control module 1 is built-in with an algorithm model of the relationship between the opening of the gas valve and the gas flow rate. The algorithm model can be obtained by training according to historical test data; the algorithm model can calculate the specific value required for adjusting the opening of the gas valve according to the difference between the gas flow rate target value input by the management personnel and the current gas flow rate data, and then generate an opening adjustment signal and send it to the execution module 6. The execution module 6 adjusts the opening of the gas valve. The opening detection module 3 is used to detect the opening data of the gas valve. Therefore, the central control module 1 can judge whether the opening of the gas valve is adjusted in place. After the adjustment is in place, the execution module 6 stops adjusting. After waiting for a period of time for the gas to stabilize, the flow detection module 2 can be used to detect whether the gas flow rate reaches the target value; thus, the opening of the gas valve can be controlled more accurately according to the requirements.

[0065] Further, the central control module 1 includes a data processing unit 11, a decision-making unit 12, and a log unit 13; the decision-making unit 12 is connected to the data processing unit 11; the log unit 13 is connected to the decision-making unit 12;

[0066] The data processing unit 11 receives various data and signals in real time and processes them;

[0067] The decision-making unit 12 is used to compare the gas flow rate data with the gas flow rate target value, and generate an opening adjustment signal according to the difference between the gas flow rate data and the gas flow rate target value, and send it to the execution module 6; and judge whether the opening of the gas valve is adjusted in place through the gas valve opening data; at the same time, when receiving the danger signal, send a cut-off signal to the emergency cut-off module 7;

[0068] The log unit 13 is used to record the overall operation status and operation logs, which is convenient for subsequent analysis and maintenance.

[0069] In this embodiment, the data processing unit 11 is configured to process various received data and signals. The decision-making unit 12 internally stores an algorithm model of the relationship between the opening degree of the gas valve and the gas flow rate. It can calculate the specific value required for adjusting the opening degree of the gas valve according to the difference between the target value of the gas flow rate input by the management personnel and the current gas flow rate data, and then generate an opening degree adjustment signal and send it to the execution module 6. The opening degree detection module 3 continuously monitors the opening degree of the gas valve, so as to know whether the opening degree of the gas valve is adjusted in place and stop in time after it is in place. The log unit 13 is used to record the operating state and adjustment operations of the entire system.

[0070] Further, the flow rate detection module 2 includes a flow rate sensor unit 21 and a temperature compensation unit 22. The temperature compensation unit 22 is connected to the flow rate sensor unit 21.

[0071] The flow rate sensor unit 21 is configured to measure the gas flow rate in the gas pipeline and obtain a flow rate measurement value.

[0072] The temperature compensation unit 22 is configured to dynamically correct the flow rate measurement value based on the temperature of the gas and output an accurate gas flow rate data.

[0073] In this embodiment, the flow rate sensor unit 21 uses an ultrasonic flowmeter to detect the gas flow rate, and the temperature compensation unit 22 internally integrates a Pt100 temperature sensor to dynamically correct the flow rate measurement value based on the gas temperature-volume flow rate conversion formula.

[0074] Further, the opening degree detection module 3 includes an angle encoder unit 31, a redundancy detection unit 32, and a cross-validation unit 33. The cross-validation unit 33 is respectively connected to the angle encoder unit 31 and the redundancy detection unit 32.

[0075] The angle encoder unit 31 is configured to detect the opening degree of the gas valve through an absolute magnetic encoder and obtain a first opening degree measurement value.

[0076] The redundancy detection unit 32 is configured to detect the opening degree of the gas valve through a laser displacement sensor and obtain a second opening degree measurement value.

[0077] The cross-validation unit 33 is configured to compare the first opening degree measurement value and the second opening degree measurement value. If they are consistent, it outputs the gas valve opening degree data. If they are inconsistent, it sends a maintenance signal to the central control module 1.

[0078] In this embodiment, the angle encoder unit 31 adopts an absolute magnetic encoder, which is directly installed on the rotating shaft of the gas valve to intuitively measure the opening degree of the gas valve and obtain the first opening measurement value. The redundant detection unit 32 uses a laser displacement sensor to detect the opening degree of the gas valve and obtain the second opening measurement value. The cross-verification unit 33 cross-verifies the two measurement values. Under normal circumstances, the opening values measured by both should be the same, and then the measurement value can be sent to the central control module 1 as the gas valve opening data. If they are inconsistent, it indicates a problem and maintenance is required.

[0079] Further, the leakage detection module 4 includes a gas sensor unit 41 and an alarm unit 42. The alarm unit 42 is connected to the gas sensor unit 41.

[0080] The gas sensor unit 41 is used to detect the gas concentration in the air at the easily leakable positions of the gas pipeline through a gas sensor and send it to the alarm unit 42.

[0081] The alarm unit 42 is used to preset a minimum value of the gas concentration in the air. When the gas sensor unit 41 detects that the gas concentration in the air at a certain position reaches this minimum value, a danger signal is immediately generated and sent to the central control module 1.

[0082] In this embodiment, the gas sensor unit 41 is composed of a gas sensor array. A plurality of gas sensors are installed at each easily leakable position of the gas pipeline to detect the gas concentration in the air and send it to the alarm unit 42. The alarm unit 42 is used to compare the gas concentration in the air detected by each gas sensor with a preset minimum value. If it is found that the gas concentration in the air at a certain place reaches this minimum value, it indicates a gas leak, and a danger signal is immediately generated and sent to the central control module 1.

[0083] Further, the remote communication module 5 includes a communication transmission unit 51, a user interface unit 52, and a security authentication unit 53. The user interface unit 52 is connected to the communication transmission unit 51. The security authentication unit 53 is connected to the user interface unit 52.

[0084] The communication transmission unit 51 is used to transmit data with the central control module 1.

[0085] The user interface unit 52 is used to provide a user interface for the management personnel to view and set parameters.

[0086] The security authentication unit 53 is used to set the user name and password to ensure security and prevent unauthorized access.

[0087] In this embodiment, the communication transmission unit 51 is used to implement the data signal transmission with the central control module 1. The user interface unit 52 can be a web page or a mobile app, which is convenient for the management personnel to view and set at any time. The security authentication unit 53 manages the user usage permissions through the user name and password.

[0088] Further, the emergency cut-off module 7 includes a cut-off valve unit 71 and an emergency unit 72; the emergency unit 72 is connected to the cut-off valve unit 71;

[0089] The cut-off valve unit 71 is used to immediately cut off the gas supply of the gas pipeline after receiving a danger signal;

[0090] The emergency unit 72 is used to use the storage battery as an emergency power source to ensure that the cut-off valve unit 71 still has sufficient power support in an emergency.

[0091] In this embodiment, the cut-off valve unit 71 is an emergency cut-off type solenoid valve. The emergency unit 72 uses the storage battery as an emergency power source to ensure that the cut-off valve unit 71 still has sufficient power support to implement the cut-off operation in an emergency, improving the safety performance.

[0092] A gas valve opening control system according to this embodiment. The flow detection module 2 uses a flow sensor to accurately detect the gas flow in the gas pipeline; the opening detection module 3 uses an opening sensor to detect the opening of the gas valve; the leakage module uses multiple gas sensors, and the multiple gas sensors are installed at the easily leaked positions of the gas pipeline to detect whether there is gas leakage. If there is, a danger signal is sent to the central control module 1, and the central control module 1 sends a cut-off signal to the emergency cut-off module 7. The emergency cut-off module 7 urgently cuts off the gas supply of the gas pipeline. At the same time, the management personnel can also observe the gas leakage situation through the remote communication module 5, so as to arrange personnel for maintenance in time; the execution module 6 uses a driver such as a motor to adjust the opening of the gas valve, and the emergency cut-off module 7 is an emergency cut-off gas solenoid valve, which immediately cuts off the gas supply after receiving the cut-off signal; the central control module 1 is built-in with an algorithm model of the relationship between the gas valve opening and the gas flow, and the algorithm model can be obtained by training according to historical test data; the algorithm model can calculate the specific value required for adjusting the opening of the gas valve according to the difference between the gas flow target value input by the management personnel and the current gas flow data, and then generate an opening adjustment signal and send it to the execution module 6. The execution module 6 adjusts the opening of the gas valve, and the opening detection module 3 is used to detect the opening data of the gas valve. Therefore, the central control module 1 can judge whether the opening of the gas valve is adjusted in place. After the adjustment is in place, the execution module 6 stops adjusting. After waiting for a period of time for the gas to stabilize, the flow detection module 2 can be used to detect whether the gas flow reaches the target value; thus, the opening of the gas valve can be controlled more accurately according to the demand.

[0093] The second embodiment of this application is as follows:

[0094] On the basis of the first embodiment, please refer to Figure 8 , where Figure 8 is the flow schematic diagram of the second embodiment of the present invention.

[0095] A gas valve opening control method provided by the present invention includes:

[0096] S1 The management personnel set a gas flow target value through the remote communication module 5;

[0097] S2 The flow detection module 2 detects the gas flow data in the gas pipeline and feeds it back to the central control module 1;

[0098] S3 The opening detection module 3 detects the opening data of the gas valve and feeds it back to the central control module 1;

[0099] The leakage detection module 4 described in S4 detects whether there is a leakage in the gas pipeline. If there is a leakage, it sends a danger signal to the central control module 1;

[0100] The central control module 1 described in S5 compares the gas flow data with the gas flow target value, and generates an opening adjustment signal according to the difference between the gas flow data and the gas flow target value, and sends it to the execution module 6. The execution module 6 adjusts the opening of the gas valve accordingly, and judges whether the opening of the gas valve is adjusted in place through the gas valve opening data; meanwhile, when receiving the danger signal, it sends a cut-off signal to the emergency cut-off module 7 to cut off the gas supply of the gas pipeline emergently.

[0101] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A gas valve opening control system, characterized in that: It includes a central control module, a flow detection module, an opening detection module, a leakage detection module, a remote communication module, an execution module and an emergency cut-off module; The flow detection module, the opening detection module, the leakage detection module, the remote communication module, the execution module and the emergency cut-off module are all connected to the central control module; The flow detection module is used to detect the gas flow in the gas pipeline and feed back the gas flow data to the central control module; The opening detection module is used to detect the opening of the gas valve and feed back the gas valve opening data to the central control module; The leakage detection module is used to detect whether there is leakage in the gas pipeline, and if there is leakage, a danger signal is sent to the central control module; The remote communication module is used for remote viewing and parameter setting by management personnel; The central control module is used to compare the gas flow data with the gas flow target value, and generate an opening adjustment signal according to the difference between the gas flow data and the gas flow target value, and send it to the execution module; and judging whether the gas valve opening is adjusted in place through the gas valve opening data; at the same time, when receiving a danger signal, sending a cut-off signal to the emergency cut-off module; The execution module is used to receive the opening adjustment signal and adjust the opening of the gas valve accordingly; The emergency cut-off module is used to urgently cut off the gas supply of the gas pipeline after receiving the cut-off signal.

2. A gas valve opening control system as claimed in claim 1, characterized in that: The central control module includes a data processing unit, a decision unit and a log unit; the decision unit is connected to the data processing unit; the log unit is connected to the decision unit; The data processing unit receives and processes various data and signals in real time; The decision unit is used to compare the gas flow data with the gas flow target value, and generate an opening adjustment signal according to the difference between the gas flow data and the gas flow target value, and send it to the execution module; and judging whether the gas valve opening is adjusted in place through the gas valve opening data; at the same time, when receiving a danger signal, sending a cut-off signal to the emergency cut-off module; The log unit is used to record the overall operating status and operation logs to facilitate subsequent analysis and maintenance.

3. A gas valve opening control system as claimed in claim 2, characterized in that: The flow detection module includes a flow sensor unit and a temperature compensation unit; the temperature compensation unit is connected to the flow sensor unit; The flow sensor unit is used to measure the gas flow in the gas pipeline to obtain a flow measurement value; The temperature compensation unit is used to dynamically correct the flow measurement value based on the temperature of the fuel gas and output accurate fuel gas flow data.

4. A gas valve opening control system as claimed in claim 3, characterized in that: The opening detection module includes an angle encoder unit, a redundant detection unit and a cross-validation unit; the cross-validation unit is connected to the angle encoder unit and the redundant detection unit respectively; The angle encoder unit is used to detect the opening of the gas valve through an absolute magnetic encoder to obtain a first opening measurement value; The redundant detection unit is used to detect the opening of the gas valve through a laser displacement sensor to obtain a second opening measurement value; The cross-validation unit is used to compare the first opening measurement value and the second opening measurement value, and output the gas valve opening data if they are consistent, and send a maintenance signal to the central control module if they are inconsistent.

5. A gas valve opening control system as claimed in claim 4, characterized in that: The leakage detection module includes a gas sensor unit and an alarm unit; the alarm unit is connected to the gas sensor unit; The gas sensor unit is used to detect the gas concentration in the air at the gas pipeline leakage-prone position through a gas sensor and send it to the alarm unit; The alarm unit is used to preset a minimum value of the gas concentration in the air. When the gas sensor unit detects that the gas concentration in the air at a certain position has reached this minimum value, a danger signal is immediately generated and sent to the central control module.

6. A gas valve opening control system as claimed in claim 5, characterized in that: The remote communication module communication transmission unit, user interface unit and security authentication unit; the user interface unit is connected to the communication transmission unit; the security authentication unit is connected to the user interface unit; The communication transmission unit is used to perform data transmission with the central control module; The user interface unit is used to provide a user interface for management personnel to view and set parameters; The security authentication unit is used to set a user name and password to ensure security and prevent unauthorized access.

7. A gas valve opening control system as claimed in claim 6, characterized in that: The emergency shutoff module comprises a shutoff valve unit and an emergency unit; the emergency unit is connected to the shutoff valve unit; The cut-off valve unit is used to immediately cut off the gas supply of the gas pipeline after receiving the danger signal; The emergency unit is used to use a battery as an emergency power source to ensure that the shut-off valve unit still has sufficient power support in an emergency.

8. A gas valve opening control method, applied to a gas valve opening control system as claimed in any one of claims 1 to 7, characterized in that: include: The manager sets a gas flow target value through the remote communication module; The flow detection module detects the gas flow data in the gas pipeline and feeds it back to the central control module; The opening detection module detects the opening data of the gas valve and feeds it back to the central control module; The leak detection module detects whether there is a leak in the gas pipeline. If there is a leak, a danger signal is sent to the central control module; The central control module compares the gas flow data with the gas flow target value, and generates an opening adjustment signal based on the difference between the gas flow data and the gas flow target value, and sends it to the execution module. The execution module adjusts the opening of the gas valve accordingly, and determines whether the opening of the gas valve is adjusted in place through the gas valve opening data; at the same time, when a danger signal is received, a cut-off signal is sent to the emergency cut-off module to urgently cut off the gas supply to the gas pipeline.

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