Self-checking intelligent safety valve

Abstract

This utility model relates to a self-checking intelligent safety valve, comprising a valve body module and a processing module. The valve body module includes a valve body module, a displacement sensor, and a pressure sensor. The valve body module includes a connector, a hollow safety valve housing, and a valve core that can move back and forth within the hollow cavity of the safety valve body. The pressure sensor is fixed to the connector to monitor the pressure data of the liquid cavity within the connector. The displacement sensor is fixedly connected to the safety valve housing to monitor the displacement data of the valve core. The processing module includes a transmission unit and a processing unit. The transmission unit is connected to the displacement sensor and the pressure sensor. The transmission unit is used to receive pressure data and displacement data. The processing unit is used to determine the status information of the self-checking intelligent safety valve based on the pressure data and displacement data. The self-checking intelligent safety valve of this utility model can perform self-checks on its own status information.

Description

Technical Field

[0001] This utility model relates to a self-testing intelligent safety valve. Background Technology

[0002] Safety valves are pressure control components, mainly used in pressure vessels, pipelines, etc., to control the pressure to not exceed the specified value. When the pressure of the medium in the equipment or pipeline rises above the specified value, the valve releases the medium to the outside of the system to prevent the pressure of the medium in the pipeline or equipment from exceeding the specified value, thus playing an important protective role for personal safety and equipment operation.

[0003] In actual coal mining operations, it is difficult to detect when the valve core inside the safety valve becomes stuck, which can easily lead to cylinder expansion of the support column, causing significant economic losses and affecting coal mining efficiency. In addition, if the safety valve leaks or opens abnormally and is not repaired in time, there is a risk that the hydraulic support will fall automatically, affecting the safety of personnel and equipment.

[0004] In coal mining with few or no personnel, the status of safety valve equipment is unknown, requiring a large number of personnel to troubleshoot underground. However, the existing equipment consists of multiple parts, and the status and faults of the equipment are difficult to determine. Utility Model Content

[0005] The purpose of this invention is to provide a self-testing intelligent safety valve to solve the problem of difficulty in manually checking the status of safety valves in the prior art.

[0006] To solve the above problems, the self-testing intelligent safety valve involved in this utility model adopts the following technical solution:

[0007] A self-testing intelligent safety valve includes a valve body module and a processing module;

[0008] The valve body module includes a safety valve body, a displacement sensor integrated after the safety valve body, and a pressure sensor integrated before the safety valve body; the safety valve body includes a connector, a hollow safety valve housing, and a valve core that can move back and forth within the hollow inner cavity of the safety valve body; the pressure sensor is fixed to the connector to monitor the pressure data of the liquid cavity within the connector; the displacement sensor is fixedly connected to the safety valve housing to monitor the displacement data of the valve core;

[0009] The processing module includes a transmission unit and a processing unit; the transmission unit is connected to the displacement sensor and the pressure sensor; the transmission unit is used to receive the pressure data and the displacement data; the processing unit is used to determine the status information of the self-testing intelligent safety valve based on the pressure data and the displacement data.

[0010] In some embodiments, the pressure sensor is fixed in a mounting hole on the connector via a threaded connection, and the mounting cavity of the pressure sensor is in communication with the liquid cavity; the pressure data at the position in communication with the liquid cavity is detected by the deformation inside the mounting cavity of the pressure sensor.

[0011] In some embodiments, the transmission unit includes a first interface and a second interface;

[0012] The first interface is used to connect to the displacement sensor and to receive the displacement data.

[0013] The second interface is used to connect to the pressure sensor and to receive the pressure data.

[0014] In some embodiments, the processing module further includes a built-in power supply; the built-in power supply powers the displacement sensor through the first interface and the pressure sensor through the second interface.

[0015] In some embodiments, the processing module further includes a housing frame, within which the built-in power supply, the transmission unit, and the processing unit are integrated.

[0016] In some embodiments, the displacement sensor includes an iron core, an induction coil, a sensor housing, and a chip. The sensor coil is surrounded around the iron core and spaced apart from the iron core to generate an electromotive force when the iron core moves. The chip is disposed in the hollow cavity of the hollow sensor housing and is electrically connected to the induction coil. A sensor probe is provided at the front end of the iron core to measure the displacement of the valve core.

[0017] The beneficial effects of this utility model are as follows:

[0018] This utility model discloses a self-testing intelligent safety valve, whose valve body module integrates a pressure sensor and a displacement sensor, enabling it to obtain its own pressure data and displacement data; then, through its own processing module, it can process the pressure data of the liquid chamber and the displacement data of the valve core in real time, thereby realizing the self-testing of the safety valve status. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below:

[0020] Figure 1 This is a schematic diagram of the principle structure of the hydraulic support pressure-holding system according to a specific embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the self-testing intelligent safety valve in a specific embodiment of this utility model;

[0022] Figure 3 This is a cross-sectional view of the valve body module in the self-testing intelligent safety valve in a specific embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the signal transmission structure of the self-testing intelligent safety valve in a specific embodiment of this utility model;

[0024] Figure 5 This is a flowchart of the self-testing method for the status of the self-testing intelligent safety valve in a specific embodiment of this utility model.

[0025] Explanation of reference numerals in the attached diagram: 1-Hydraulic source; 2-Electro-hydraulic directional valve; 3-Hydraulic check valve; 4-Hydraulic support column; 5-Intelligent safety valve; 6-Pressure sensor; 7-Emulsion tank; 100-Valve body module; 11-Connector; 12-Valve core; 13-Spring seat; 14-Spring; 15-Safety valve housing; 16-Pressure regulating plug; 17-Displacement sensor; 171-Sensor probe; 172-Iron core; 173-Induction coil; 174-Sensor housing; 175-Chip; 18-Pressure sensor; 181-Mounting cavity; 19-Liquid cavity; 20-Rubber sleeve; 200-Processing module; 21-First interface; 22-Second interface. Detailed Implementation

[0026] To make the technical objectives, technical solutions, and beneficial effects of this utility model clearer, the technical solutions of this utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model; that is, the described embodiments are only a part of the embodiments of this utility model, not all of them. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0027] In the following text, the terms "comprising," "having," and their cognates, which may be used in various embodiments of this application, are intended only to indicate a particular feature, number, step, operation, element, component, or combination thereof, and should not be construed as primarily excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, or adding the possibility of one or more combinations thereof. Furthermore, the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0028] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of this application pertain. Terms (such as those defined in commonly used dictionaries) shall be interpreted as having the same meaning as in their contextual meaning in the relevant technical field and shall not be construed as having an idealized or overly formal meaning, unless clearly defined in the various embodiments of this application.

[0029] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] like Figure 1 The hydraulic support pressure-maintaining system shown includes a hydraulic power source 1, a hydraulic support column 4, a hydraulically controlled check valve 3, an electro-hydraulic directional valve 2, an emulsion tank 7, a pressure sensor 6, and an intelligent safety valve 5. The hydraulic power source 1 supplies emulsion to the hydraulic support column; the hydraulic support column 4 bears the load of the roof plate and includes a rodless chamber and a rod chamber; the hydraulically controlled check valve 3 is located on the first pipeline of the rodless chamber, controlling the inflow and outflow of emulsion in the rodless chamber to maintain pressure; the electro-hydraulic directional valve 2 is located on the pipeline shared by the rodless and rod chambers, allowing the hydraulic power source 1 to supply emulsion to the rodless chamber via the electro-hydraulic directional valve 2, the hydraulically controlled check valve 3, and the first pipeline, while allowing the emulsion to return from the rod chamber via the second pipeline and the electro-hydraulic directional valve 2. The emulsion tank 10; or the hydraulic source 1 supplies emulsion to the rod chamber via the electro-hydraulic directional valve 2 and the second pipeline, so that the rodless chamber returns oil to the emulsion tank 7 via the first pipeline and the hydraulic control check valve 3 and the electro-hydraulic directional valve 2 in sequence to receive the returning hydraulic source 1; the first pipeline is equipped with a pressure sensor 6 and an intelligent safety valve 5 to monitor the pressure status of the rodless chamber, and the pressure sensor 6 and the intelligent safety valve 5 are connected in parallel on the first pipeline; the hydraulic control check valve 3, the pressure sensor 6, and the intelligent safety valve 5 are connected to the controller 2, and the controller 2 is electrically connected to the central control center.

[0031] In this hydraulic support pressure-holding system, pressure sensor 6 and intelligent safety valve 5 are connected in parallel. The intelligent safety valve includes a valve body module and a displacement sensor integrated behind the valve body module. The displacement sensor can read and record the displacement information of the valve core of the safety valve. The pressure sensor monitors the pressure state of the rodless chamber of the hydraulic cylinder and sends the pressure state to the computing chip of the intelligent safety valve. The computing chip judges the pressure-holding system based on the displacement data and pressure data to monitor the state of the lower chamber of the column. While the displacement data obtained by the displacement sensor can monitor the state of the safety valve, the monitoring is not comprehensive. Therefore, this application proposes a self-testing intelligent safety valve.

[0032] The following describes the self-testing intelligent safety valve using specific embodiments.

[0033] Specific embodiments of the self-testing intelligent safety valve involved in this utility model are as follows: Figure 2 As shown, the self-testing intelligent safety valve includes a valve body module 100 and a processing module 200.

[0034] like Figure 3 The valve body module shown includes a safety valve body, a displacement sensor 18 integrated behind the safety valve body, and a pressure sensor 17 integrated in front of the safety valve body. The safety valve body includes a connector 11, a safety valve housing 15, a valve core 12 that can move back and forth within the hollow cavity of the safety valve housing 15, a spring seat 13, a spring 14, and a pressure adjusting plug 16. The pressure sensor 18 is fixedly connected to the connector 11 to monitor the pressure data of the liquid chamber 19 inside the connector 11. The displacement sensor 17 is fixedly connected to the safety valve housing 15 to monitor the displacement data of the valve core 12.

[0035] The hollow cavity of the safety valve housing 15 is a stepped hole, with a small-diameter shaft hole at one end and a large-diameter spring seat mounting hole at the other end. A spring seat 13 is installed at the front end of the spring seat mounting hole, and a pressure adjusting screw plug 16 is installed at the rear end, so that the spring 14 of the safety valve is installed between the spring seat 13 and the pressure adjusting screw plug 16 to adjust the elastic force of the safety valve spring 14 on the spring seat 13. The valve core 12 passes through the shaft hole and its rear end contacts the spring seat 13. A connector 11 is provided at the front end of the valve core 12, and a rubber sleeve 20 is fitted on the outer periphery of the front end of the safety valve housing 15. A rivet (not marked in the figure) is riveted between the pressure adjusting screw plug 16 and the safety valve housing 15.

[0036] The pressure sensor of this invention is a silicon piezoresistive pressure sensor. The pressure sensor 18 is fixed in the mounting hole on the connector 11 by a threaded connection, and the mounting cavity 181 of the pressure sensor 18 is connected to the liquid cavity 19. The pressure data at the connection position of the liquid cavity is detected by the deformation inside the mounting cavity of the pressure sensor. That is to say, there is a small hole between the mounting cavity of the pressure sensor and the liquid cavity of the connector, so that the two cavities are connected. When the self-testing intelligent safety valve is used, the liquid enters the core of the mounting cavity 181 of the pressure sensor 18 through the high-pressure liquid cavity 19, thereby realizing the monitoring of the liquid cavity pressure.

[0037] The displacement sensor includes an iron core 172, an induction coil 173, a sensor housing 174, and a chip 175. The sensor coil 173 is wrapped around the iron core 172 and spaced apart from the iron core 172 to generate an electromotive force when the iron core 172 moves. The chip 175 is disposed in the hollow cavity of the hollow sensor housing 174 and is electrically connected to the induction coil 173. A sensor probe 171 is provided at the front end of the iron core 172 to measure the displacement data of the valve core 12. It can be understood that the displacement sensor is placed at the tail end of the safety valve housing, and the sensor probe of the displacement sensor contacts the spring seat, following the movement of the valve core along with the spring seat. Therefore, the displacement value of the spring seat and the displacement value of the valve core are the same. The displacement data of the valve core is obtained by recording the displacement value of the spring seat.

[0038] This utility model discloses a self-testing intelligent safety valve, which integrates a pressure sensor in front of the safety valve body and a displacement sensor in the rear of the safety valve body. It can read and record the displacement data of the valve core and the pressure data of the liquid chamber of the self-testing intelligent safety valve. By calculating the displacement data and pressure data, the working status of the safety valve is detected, and finally the working status information, displacement data and time information of the safety valve are transmitted to the outside through the Hirschmann connector.

[0039] The processing module of this utility model includes a transmission unit and a processing unit; the transmission unit is connected to a displacement sensor and a pressure sensor; the transmission unit is used to receive pressure data and displacement data; the processing unit is used to determine the status information of the self-testing intelligent safety valve based on the pressure data and displacement data.

[0040] The transmission unit includes a first interface 21 and a second interface 22; the first interface is used to connect to a displacement sensor and to receive displacement data; the second interface is used to connect to a pressure sensor and to receive pressure data.

[0041] The processing module of this invention also includes a built-in power supply, which can be a rechargeable battery, to power the displacement sensor and the pressure sensor. Specifically, the displacement sensor is powered through a first interface, and the pressure sensor is powered through a second interface.

[0042] In some embodiments, the processing module further includes a housing frame to protect the built-in power supply, transmission unit, and processing unit of the processing module.

[0043] In practical applications, such as Figure 4As shown, each column of the hydraulic support is equipped with a self-testing intelligent safety valve (including a valve body module and a processing module). Two Hirschmann connectors, namely the first interface and the second interface, are connected to the pressure sensor and displacement sensor of the valve body module, respectively, for power supply and data acquisition. After collecting displacement and pressure data, the processing unit processes the data and determines the status of the self-testing intelligent safety valve based on the differences in pressure and displacement data, achieving self-detection of the safety valve status. The data is then wirelessly uploaded to the controller in real time for alarm notification. The controller then uploads the relevant data of the self-testing intelligent safety valve from each hydraulic support controller to the host computer to display the status of the self-testing intelligent safety valves across the entire longwall mining face.

[0044] In this embodiment of the utility model, such as Figure 5 As shown, the self-checking method for the status of a self-checking intelligent safety valve includes:

[0045] S100 obtains valve core displacement data through the displacement sensor of the self-testing intelligent safety valve;

[0046] S200 obtains pressure data of the liquid chamber through the pressure sensor of the self-testing intelligent safety valve;

[0047] S300, pressure data and displacement data are transmitted to the processing unit via the transmission unit;

[0048] S400, the processing unit processes the pressure and displacement data to determine the status of the corresponding self-testing intelligent safety valve.

[0049] If the pressure data is within the preset pressure range and the displacement data is within the preset displacement range, the self-testing intelligent safety valve is considered to be in normal condition.

[0050] If the pressure data is higher than the preset pressure range, and the displacement data is higher than the preset displacement range by a certain value and then returns to the preset displacement range, then the self-testing intelligent safety valve is judged to have opened normally a certain number of times.

[0051] If the pressure data is higher than the preset pressure range, and the displacement data is within the preset displacement range but exceeds the preset multiple of the set pressure value (e.g., 1.2 times), the self-testing intelligent safety valve is judged to be stuck and an alarm is required.

[0052] If the pressure data is higher than the preset pressure range, and the displacement data is within the preset displacement range and does not exceed the preset multiple of the set pressure value (e.g., 1.2 times), it is determined that the working pressure of the self-testing intelligent safety valve has increased, and only a pressure increase prompt is needed.

[0053] If the pressure data is lower than the preset pressure range and the displacement data is higher than the preset displacement range, it is determined that the working pressure of the self-testing intelligent safety valve has decreased, and a pressure reduction prompt is required.

[0054] If the pressure data is lower than the preset pressure range, but the displacement data is within the preset displacement range, the data is uploaded to the controller. Finally, the controller or host computer further judges the data by combining it with the pressure data of adjacent self-testing intelligent safety valves. If the pressure data of adjacent valves differs too much, it is determined that there is a local system leak in the self-testing intelligent safety valve, and an alarm is triggered.

[0055] Advantages of the self-testing intelligent safety valve of this utility model:

[0056] 1. The valve body module integrates a pressure sensor and a displacement sensor, and through its own processing module, it can process the pressure data of the liquid chamber and the displacement data of the valve core in real time, so as to realize the self-check of the safety valve status.

[0057] 2. It can monitor the working status of its own safety valve in real time, reduce the time for manual inspection, reduce the labor intensity of personnel, and provide a technical foundation for future unmanned and minimally staffed mining.

[0058] 3. The safety valve itself will promptly issue an alarm when it malfunctions, thus preventing a chain reaction caused by equipment damage, enhancing the safety of the fully mechanized mining face, and reducing the risk of equipment damage.

[0059] Finally, it should be noted that the above embodiments are only for illustration and not for limiting the technical solutions of this utility model. Any equivalent substitutions and modifications or partial substitutions that do not depart from the spirit and scope of this utility model should be covered within the scope of protection of the claims of this utility model.

Claims

1. A self-testing intelligent safety valve, characterized in that, Includes valve body module and processing module; The valve body module includes a safety valve body, a displacement sensor integrated after the safety valve body, and a pressure sensor integrated before the safety valve body; the safety valve body includes a connector, a hollow safety valve housing, and a valve core that can move back and forth within the hollow inner cavity of the safety valve body; the pressure sensor is fixed to the connector to monitor the pressure data of the liquid cavity within the connector; the displacement sensor is fixedly connected to the safety valve housing to monitor the displacement data of the valve core; The processing module includes a transmission unit and a processing unit; The transmission unit connects the displacement sensor and the pressure sensor; the transmission unit is used to receive the pressure data and the displacement data; the processing unit is used to determine the status information of the self-testing intelligent safety valve based on the pressure data and the displacement data.

2. The self-testing intelligent safety valve according to claim 1, characterized in that, The pressure sensor is fixed in the mounting hole on the connector by a threaded connection, and the mounting cavity of the pressure sensor is in communication with the liquid cavity; the pressure data at the position of the liquid cavity is detected by the deformation inside the mounting cavity of the pressure sensor.

3. The self-testing intelligent safety valve according to claim 1, characterized in that, The transmission unit includes a first interface and a second interface; The first interface is used to connect to the displacement sensor and to receive the displacement data. The second interface is used to connect to the pressure sensor and to receive the pressure data.

4. The self-testing intelligent safety valve according to claim 3, characterized in that, The processing module also includes a built-in power supply; the built-in power supply powers the displacement sensor through the first interface and the pressure sensor through the second interface.

5. The self-testing intelligent safety valve according to claim 4, characterized in that, The processing module also includes a housing frame, within which the built-in power supply, the transmission unit, and the processing unit are integrated.

6. The self-testing intelligent safety valve according to claim 1, characterized in that, The displacement sensor includes an iron core, an induction coil, a sensor housing, and a chip. The induction coil is surrounded around the iron core and spaced apart from the iron core so that it generates an electromotive force when the iron core moves. The chip is disposed in the hollow cavity of the hollow sensor housing and is electrically connected to the induction coil. A sensor probe is provided at the front end of the iron core to measure the displacement of the valve core.

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