A gas shutoff valve shutoff monitoring system

Abstract

The application provides a gas cut-off valve cut-off monitoring system, which comprises a cut-off valve body, a support and a cut-off monitoring mechanism, wherein the cut-off valve body is connected to a gas conveying and distributing pipeline; the support is detachably arranged on the cut-off valve body to stably support the cut-off monitoring mechanism; the cut-off monitoring mechanism comprises a sensor and a trigger, one end of the trigger is connected to a valve rod of the cut-off valve body, and the other end is used as a trigger end; the valve rod drives the trigger to enter or leave the sensing range of the sensor, so as to convert the cut-off position of the cut-off valve into an on-off signal of the sensor; and the sensor is signal or electrically connected to a controller of an alarm device, so as to receive the cut-off signal of the sensor when the trigger end leaves the sensing range of the sensor, and control the alarm device to start alarm; in this way, maintenance personnel can quickly locate the cut-off point of the gas conveying and distributing pipeline, the operation and maintenance efficiency of a complex gas conveying and distributing system such as a gas pressure regulating station is effectively improved, and manpower is saved.

Description

Technical Field

[0001] This application relates to the field of gas shut-off monitoring technology, and further to a gas shut-off valve shut-off monitoring system. Background Technology

[0002] As is well known, in order to ensure the safe operation of the system and rapid response in case of failure, gas pressure regulating stations are usually equipped with a large number of gas shut-off valves to quickly cut off the gas supply of the corresponding branch when the system is in an abnormal situation, so as to prevent the accident from escalating.

[0003] In practical applications, gas shut-off valves often shut off due to various malfunctions during routine maintenance and use. Maintenance personnel must locate the shut-off point, troubleshoot the problem, and then manually reopen the valve to restore connectivity to the corresponding gas distribution pipeline. However, in gas pipeline systems with complex network layouts, such as gas pressure regulating stations, the sheer number of gas shut-off valves makes it difficult and inefficient for maintenance personnel to locate the shut-off point by checking each valve individually. This method is labor-intensive and requires improvement. Utility Model Content

[0004] The purpose of this application is to provide a gas shut-off valve shut-off monitoring system that automatically monitors the shut-off action of the gas shut-off valve in real time, assisting maintenance personnel in quickly locating the shut-off point of the gas transmission and distribution pipeline, thereby improving the operation and maintenance efficiency of gas pressure regulating stations and reducing the labor intensity of maintenance personnel.

[0005] The technical solution provided in this application is as follows:

[0006] This application provides a gas shut-off valve shut-off monitoring system, including:

[0007] The shut-off valve body is connected to the gas transmission and distribution pipeline, and a valve stem is provided on it along the movement direction of the valve core;

[0008] The cut-off monitoring mechanism includes a sensor and a trigger. One end of the trigger is connected to the valve stem, and the other end is set as a trigger end. The trigger end is driven into or out of the sensing range of the sensor by the valve stem.

[0009] A support, detachably mounted on the shut-off valve body, is used to support the shut-off monitoring mechanism;

[0010] An alarm device, wherein the controller is signal- or electrically connected to the sensor, so as to receive a cut-off signal from the sensor when the trigger end leaves the sensing range of the sensor, and control the alarm device to activate the alarm.

[0011] This application provides a gas shut-off valve shut-off monitoring system. By using a trigger to link the valve stem and a sensor, when a gas transmission and distribution pipeline is shut off, the valve stem of the shut-off valve body drives the trigger end away from the sensor's sensing range. This converts the shut-off displacement of the shut-off valve body into an on / off signal from the sensor, enabling the gas transmission and distribution pipeline shut-off process to be integrated into an alarm system. This achieves real-time automatic monitoring and alarm of the shut-off valve's shut-off action, replacing the method used in related technologies where maintenance personnel manually search for the pipeline shut-off location. This effectively improves the convenience of locating the shut-off point in gas transmission and distribution pipelines, significantly enhances the operation and maintenance efficiency of complex gas pipeline systems such as gas pressure regulating stations, and reduces the workload of maintenance personnel.

[0012] Furthermore, by using a support to mount the shut-off monitoring mechanism on the shut-off valve body, a modular design for the shut-off monitoring mechanism is formed. In practical applications, by selecting a suitable support according to the different shapes and sizes of the shut-off valve body of different models, the shut-off monitoring mechanism can be installed on the corresponding shut-off valve body. The shut-off monitoring mechanism has a wide range of compatibility and strong applicability, effectively ensuring the practicality of the gas shut-off valve shut-off monitoring system.

[0013] In some embodiments, the sensor is located at the end of the valve stem opposite to the valve core;

[0014] The sensor includes a cylindrical housing with an opening facing the valve stem.

[0015] The trigger includes a signal rod, which is arranged parallel to the valve stem, and its end away from the sensor is detachably connected to the valve stem;

[0016] Initially, the trigger end of the signal rod extends into the housing through the opening of the housing and is within the sensing range of the sensor;

[0017] When the valve is cut off, the valve stem moves away from the sensor along its own axis to cut off the corresponding gas transmission and distribution pipeline, and drives the signal rod to move synchronously until the trigger end of the signal rod extends out of the housing opening and leaves the sensing range of the sensor.

[0018] This application provides a gas shut-off valve shut-off monitoring system. It utilizes a signal rod to connect the shut-off valve body and a sensor. The trigger structure is simple, and production and assembly are convenient, helping to reduce enterprises' cost investment in gas shut-off monitoring and promoting energy conservation and cost reduction. Simultaneously, the sensor has a cylindrical housing. Maintenance personnel can determine whether the shut-off monitoring mechanism is working properly by comparing the position of the signal rod relative to the housing and the on / off status of the gas transmission and distribution pipeline. This further improves the operation and maintenance efficiency of gas pressure regulating stations and reduces the labor intensity of maintenance personnel.

[0019] In some embodiments, the sensor further includes a lead-out tube disposed on the side wall of the housing and communicating with the inner cavity of the housing, for through which the sensor's wires are threaded.

[0020] In some embodiments, the connecting structure, located between the signal rod and the valve rod, includes a connecting plate;

[0021] The connecting plate is arranged perpendicular to the signal rod and the valve rod, and its two ends in the length direction are respectively formed with a first mounting position and a second mounting position. The signal rod and the valve rod are respectively detachably connected to the first mounting position and the second mounting position.

[0022] This application provides a gas shut-off valve shut-off monitoring system, which sets the first and second mounting positions at opposite ends of the connecting plate length. By selecting a connecting plate of appropriate length according to the shape of the shut-off valve body and the installation space limitations of the corresponding gas transmission and distribution pipeline, the shut-off monitoring mechanism can be installed on the corresponding shut-off valve body, realizing intelligent monitoring of the shut-off operation of the corresponding gas transmission and distribution pipeline. This gas shut-off valve shut-off monitoring system can meet the installation requirements of different gas shut-off valves and gas transmission and distribution pipelines, further improving compatibility and enhancing practicality.

[0023] In some embodiments, the first mounting position includes a first mounting hole;

[0024] The end of the signal rod opposite to the sensor is threaded through the first mounting hole;

[0025] Tighten the nut, screw it onto the end of the signal rod away from the sensor, and press it against the end face of the connecting plate away from the sensor.

[0026] In some embodiments, the second mounting position includes a second mounting hole;

[0027] The end of the valve stem opposite to the valve core is threaded through the second mounting hole and is detachably fixed to the connecting plate by fasteners.

[0028] This application provides a gas shut-off valve shut-off monitoring system, in which both the signal rod and the valve stem are threadedly connected to the connecting plate. This simplifies the structure of the gas shut-off valve shut-off monitoring system, reduces its production and assembly difficulty, and further improves the convenience and efficiency of maintenance work on the corresponding gas transmission and distribution pipelines.

[0029] In some embodiments, one end of the connecting plate corresponding to the second mounting hole is bent to form a support ring, and the support ring is formed on the side of the connecting plate opposite to the sensor;

[0030] The second mounting hole is formed on the annular surface of the support ring on the side opposite to the sensor.

[0031] This application provides a gas shut-off valve shut-off monitoring system. In practical applications, different sizes of support rings are set according to the different axial dimensions of the valve stem of the shut-off valve body. This allows the shut-off monitoring mechanism to be installed on different shut-off valve bodies, thereby effectively avoiding the situation where the shut-off monitoring mechanism is difficult to install due to the valve stem being too short. This helps to further improve the applicability of the gas shut-off valve shut-off monitoring system to different models of shut-off valve bodies.

[0032] In some embodiments, the opening of the housing protrudes from the outer surface of the housing and a connecting pipe is formed on the surface of the housing;

[0033] The outer circumferential surface of the connecting pipe is provided with external threads;

[0034] The connecting pipe is used to detachably connect to the opening on the valve stem circumferentially on the shut-off valve body, so as to achieve the coaxial arrangement of the valve stem and the signal rod.

[0035] The gas shut-off valve shut-off monitoring system provided in this application, in practical applications, after the valve stem and signal rod are coaxially fixed, the outer shell is detachably connected to the valve stem position on the shut-off valve body through the connecting pipe, so that the shut-off monitoring mechanism can be detachably installed on the shut-off valve body. The assembly form of this gas shut-off valve shut-off monitoring system is simple and effectively reduces the production cost of enterprises.

[0036] In some embodiments, the support includes a first support plate, a second support plate, and a connecting plate. The first support plate and the second support plate are arranged in parallel and spaced apart. The connecting plate is fixed between the first support plate and the second support plate and is perpendicular to the first support plate and the second support plate, so that the cross-section of the support has a U-shaped groove.

[0037] The support is located at one end of the valve stem in a predetermined radial direction, and its groove faces the valve stem.

[0038] The first support plate is used to be fixedly connected to the lug seat of the shut-off valve body;

[0039] The sensor is located in the groove of the support, and the housing is detachably fixed to the second support plate.

[0040] This application provides a gas shut-off valve shut-off monitoring system, which uses a U-shaped support to support the shut-off monitoring mechanism on one side of the shut-off valve body, thereby achieving a detachable connection between the monitoring mechanism and the valve body and a modular arrangement of the monitoring mechanism relative to the valve body. The connection structure between the monitoring mechanism and the valve body is simple, easy to produce and install, and helps enterprises to further save energy and reduce costs.

[0041] In some embodiments, the support further includes a limiting plate, which is disposed in the slot of the support and is arranged parallel to the support plate;

[0042] The connecting plate, the limiting plate, and the second support plate surround and form the mounting position of the sensor;

[0043] A clearance hole is provided in the connecting plate and corresponds to the mounting position;

[0044] The outer casing is embedded into the mounting position along the depth direction of the support groove, and slides in cooperation with the limiting plate and the second support plate. The cable outlet tube passes through the thickness direction of the connecting plate from the clearance hole, and slides in cooperation with the inner wall of the clearance hole until the outer casing abuts against the connecting plate.

[0045] This application provides a gas shut-off valve shut-off monitoring system. By using the plug-in fit between the housing and the support, and the plug-in fit between the outlet pipe and the clearance hole of the connecting plate, the sensor is stably set relative to the support, and the displacement of the sensor along the valve stem axis is limited when the gas transmission and distribution pipeline is shut off. The system has a simple structure, achieves multiple benefits, and helps enterprises reduce costs and increase efficiency.

[0046] In some embodiments, the connection between the first support plate and the connecting plate is recessed inward and forms a relief groove, which is used to adapt to the shape of the corresponding gas transmission and distribution pipeline and / or shut-off valve body.

[0047] The gas shut-off valve shut-off monitoring system provided in this application has an inwardly recessed part on the support away from the sensor. This reduces the size of the gas shut-off valve shut-off monitoring system and promotes its miniaturization, while effectively avoiding protrusions on the corresponding gas transmission and distribution pipeline and / or shut-off valve body, thereby effectively ensuring the compatibility of the shut-off monitoring mechanism and the gas shut-off valve shut-off monitoring system.

[0048] Compared with the prior art, the gas shut-off valve shut-off monitoring system provided in this application has at least one of the following advantages:

[0049] 1. This application installs a sensor on the shut-off valve body and uses a trigger to link the valve stem and sensor. When the gas transmission and distribution pipeline is shut off, the valve stem moves the trigger end of the trigger away from the sensor's sensing range, triggering the sensor. This converts the shut-off valve's displacement into a sensor on / off signal, thereby enabling the gas transmission and distribution pipeline shut-off process to be integrated into an alarm system for real-time automatic monitoring and alarm of the shut-off valve body's shut-off action. This improves the convenience of locating the shut-off point of the gas transmission and distribution pipeline and the operation and maintenance efficiency of complex gas pipeline systems such as gas pressure regulating stations. It significantly reduces the labor intensity of maintenance personnel, thus providing a solution to the problems of delayed on / off status identification and difficult fault location in complex gas transmission and distribution pipelines such as gas pressure regulating stations. It also provides a reliable IoT sensing solution for the construction of smart gas pipeline networks. In addition, by building a digital operation and maintenance system, it helps gas companies upgrade their operation and maintenance mode from "passive emergency repair" to "proactive prevention".

[0050] 2. In this application, a signal rod and sensor combination is set to form a cut-off monitoring mechanism, and the cut-off monitoring mechanism is detachably installed on the cut-off valve body with the help of a connecting plate and a support, so as to realize the modular setting of the cut-off monitoring mechanism relative to the cut-off valve body. The cut-off monitoring mechanism has high compatibility and can be adapted to many gas cut-off valve models at home and abroad, so that different gas transmission and distribution pipelines can realize automatic cut-off monitoring and alarm, with a wide range of applications and strong practicality. Attached Figure Description

[0051] The preferred embodiments will now be described in a clear and easy-to-understand manner, with reference to the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of this solution.

[0052] Figure 1 This is a plan view of the overall structure of the gas shut-off valve shut-off monitoring system, which is the main embodiment of this application.

[0053] Figure 2 This application's embodiment mainly illustrates the plan view of the cut-off monitoring mechanism when the sensor triggering principle is magnetic induction;

[0054] Figure 3 This is a longitudinal cross-sectional view of the shell structure of the cutting monitoring mechanism, which is the main feature of this application embodiment;

[0055] Figure 4 This application's embodiment mainly illustrates the plan view of the cut-off monitoring mechanism when the sensor triggering principle is contact-based;

[0056] Figure 5 This embodiment of the application mainly illustrates the plan view of the cut-off monitoring mechanism when the sensor triggering principle is inductive.

[0057] Explanation of reference numerals in the attached figures:

[0058] 1. Shut-off valve body; 11. Valve stem; 2. Support; 21. First support plate; 22. Second support plate; 23. Connecting plate; 24. Limiting plate; 3. Shut-off monitoring mechanism; 31. Sensor; 311. Housing; 312. Connecting pipe; 313. Outlet pipe; 314. Hall effect device; 315. Reed switch; 316. Micro switch; 317. Proximity sensor; 318. Support component; 32. Trigger component; 321. Trigger end; 3211. Magnet; 4. Connecting plate; 41. Support ring. Detailed Implementation

[0059] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0060] To keep the drawings concise, each drawing only schematically shows the parts relevant to this application, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0061] In gas transmission and distribution systems, gas shut-off valves serve as crucial safety protection devices. Their primary function is to cut off the gas supply and protect downstream equipment when system pressure is abnormal. During routine maintenance and use, gas shut-off valves frequently shut off due to various malfunctions. Maintenance personnel must locate the shut-off point, troubleshoot the issue, and then manually restore the connection to the corresponding gas transmission and distribution pipeline. However, in complex gas pipeline systems such as gas pressure regulating stations, a large number of gas shut-off valves are deployed. Locating the shut-off location of each valve through a step-by-step inspection is cumbersome, difficult, inefficient, and time-consuming, resulting in high labor intensity for maintenance personnel.

[0062] For this, please refer to the accompanying drawings in the instruction manual. Figures 1 to 5In one embodiment, a gas shut-off valve shut-off monitoring system is provided, including a shut-off valve body 1, a support 2, and a shut-off monitoring mechanism 3. The shut-off valve body 1 is connected to a gas transmission and distribution pipeline, and a valve stem 11 is provided on it along the movement direction of the valve core. The support 2 is detachably mounted on the shut-off valve body 1 to support the shut-off monitoring mechanism 3. The shut-off monitoring mechanism 3 includes a sensor 31 and a trigger 32. One end of the trigger 32 is connected to the valve stem 11, and the other end serves as a trigger end 321, which is driven by the valve stem 11 to enter or leave the sensing range of the sensor 31. An alarm device is also included, whose controller is signal- or electrically connected to the sensor 31. When the valve stem 11 drives the trigger end 321 out of the sensing range of the sensor 31, the controller receives the shut-off signal from the sensor 31 and controls the alarm device to activate the alarm. This achieves real-time automatic monitoring of the shut-off action of the gas shut-off valve. Maintenance personnel can quickly locate the shut-off point of the gas transmission and distribution pipeline based on the alarm prompts, thereby making the operation and maintenance of gas pipeline systems with complex network layouts, such as gas pressure regulating stations, more time-saving and labor-saving, and significantly improving the efficiency of corresponding operations.

[0063] In one embodiment, based on the above embodiments, specifically referring to... Figures 1 to 5 In this embodiment, the axial direction and movement direction of the valve stem 11 are parallel to the movement direction of the valve core; and, referring to... Figure 1 The sensor 31 is installed at the end of the valve stem 11 that is axially away from the valve core, so as to reduce the difficulty of setting up the cut-off monitoring mechanism 3.

[0064] Reference Figure 2 , Figure 4 and Figure 5 In this embodiment, the trigger 32 includes a signal rod, which is a long straight rod structure and is arranged parallel to the valve stem 11. Initially, the trigger end 321 of the signal rod is within the sensing range of the sensor 31, and its other end is detachably and fixedly connected to the valve stem 11. When the gas shut-off valve performs the gas transmission and distribution pipeline shut-off action, that is, when the valve stem 11 moves away from the sensor 31 along its own axis, the valve stem 11 drives the signal rod to move synchronously until the trigger end 321 of the signal rod leaves the sensing range of the sensor 31.

[0065] In this embodiment, preferably, the sensor 31 includes a cylindrical outer shell 311, the depth direction of which extends along the axial direction of the valve stem 11, with its opening facing the valve stem 11. Initially, the trigger end 321 of the signal rod extends into the outer shell 311 through the opening, thus being within the sensing range of the sensor 31. When the valve stem 11 moves away from the sensor 31 along its own axial direction to perform a cutting-off action, the trigger end 321 of the signal rod moves synchronously with the signal rod until it extends out of the opening of the outer shell 311, thereby leaving the sensing range of the sensor 31. The outer shell 311 serves as the physical boundary of the sensing range of the sensor 31, facilitating maintenance personnel to observe the working status of the gas shut-off valve monitoring system, thereby further improving the efficiency of corresponding operation and maintenance.

[0066] Furthermore, to achieve a detachable connection between the signal rod and the valve stem 11, a connecting structure is provided between the signal rod and the valve stem 11, as shown in the reference. Figure 1 In this embodiment, the connection structure includes a connecting plate 4 perpendicular to the valve stem 11 and the signal rod. The two ends of the connecting plate 4 in the length direction are respectively formed with a first mounting position and a second mounting position, and the signal rod and the valve stem 11 are respectively connected to the first mounting position and the second mounting position.

[0067] Specifically, in this embodiment, both the first mounting position and the second mounting position include mounting holes. For ease of distinction, the first mounting position is defined as including a first mounting hole, and the second mounting position as including a second mounting hole. The end of the signal rod facing away from the sensor 31 passes through the first mounting hole along the thickness direction of the connecting plate 4 and is threadedly connected to the connecting plate 4. Of course, in the embodiments of this application, the connection structure may also include a fastening nut, which is screwed onto the end of the signal rod facing away from the sensor 31 and abuts against the end face of the connecting plate 4 facing away from the sensor 31 to stably connect the signal rod and the connecting plate 4. Similarly, the end of the valve stem 11 facing away from the valve core passes through the second mounting hole along the thickness direction of the connecting plate 4, and the connection method between the signal rod and the connecting plate 4 is the same as that between the valve stem 11 and the connecting plate 4; that is, the connection method between the signal rod and the connecting plate 4 is the same as that between the valve stem 11 and the connecting plate 4.

[0068] Furthermore, as a preferred embodiment, support rings 41 can be provided at both ends of the connecting plate 4 along its length to increase the distance between the valve stem 11 and the signal rod, thus meeting the installation requirements of the cut-off monitoring mechanism 3 on different types of gas cut-off valves; refer to Figure 1 The illustration shows an embodiment in which the support ring 41 is located at one end of the connecting plate 4 near the valve stem 11. Specifically, the support ring 41 is formed on the side of the connecting plate 4 away from the sensor 31 in the thickness direction, and the second mounting hole is formed on the annular surface of the support ring 41 away from the sensor 31, so as to meet the automatic monitoring requirements of gas shut-off valves with a short exposed length of valve stem 11.

[0069] In the embodiments of this application, the support ring 41 is integrally formed with the connecting plate 4 and is formed by bending the connecting plate 4. For example, a sheet metal plate is selected to set the connecting plate 4 with the support ring 41 to ensure the ease of production of the corresponding connection structure. Of course, a separate support ring 41 can also be provided, and then it can be fixed to the connecting plate 4 by welding, snap-fitting or other means. As long as the implementation method ensures a firm connection between the two, it is within the protection scope of this application.

[0070] Alternatively, a support ring 41 can be formed on the side of the connecting plate 4 near the sensor 31, and the first mounting hole can be formed on the annular surface of the corresponding support ring 41 near the sensor 31 to shorten the setting length of the signal rod. In the embodiments of this application, the support ring 41 can be set as appropriate, depending on the size and appearance of the gas shut-off valve and / or the gas transmission and distribution pipeline.

[0071] In embodiments of this application, when the shape of the shut-off valve body 1 and / or the gas transmission and distribution pipeline is suitable for coaxially aligning the signal rod and valve rod 11, the opening of the housing 311 can be provided to protrude from its peripheral surface, as shown in the reference. Figure 1 , Figure 2 , Figure 4 and Figure 5 The outer casing 311 has a connecting pipe 312 formed on it. By detachably connecting the connecting pipe 312 to the opening of the valve stem 11 on the shut-off valve body 1 (for example, as shown in the attached drawings, the connecting pipe 312 has an external thread formed on its outer circumference to match the internal thread structure on the shut-off valve body 1; the opening on the shut-off valve body 1 that adapts to the connecting pipe 312 is not shown in the drawings), and detachably fixing the signal rod to the valve stem 11 coaxially, the shut-off monitoring mechanism 3 can be installed on the shut-off valve body 1. At this time, there is no need to set a retainer. Furthermore, the connecting plate 4 between the signal rod and the valve stem 11 can be replaced with a shaft kit, clamp, or other similar form.

[0072] Furthermore, refer to Figure 1 In this embodiment, the support 2 is generally U-shaped, including a first support plate 21, a second support plate 22, and a connecting plate 23. The first support plate 21 and the second support plate 22 are arranged in parallel intervals, and the connecting plate 23 is arranged perpendicular to the first support plate 21 and the second support plate 22 and is fixedly connected to the same end between the first support plate 21 and the second support plate 22. During assembly, the support 2 is detachably fixed to the lug or clamp on the shut-off valve body 1 through the first support plate 21, so that it and the shut-off monitoring mechanism 3 on it are located at one end of the valve stem 11 in a predetermined radial direction, and its groove is kept facing the valve stem 11.

[0073] In addition, the support 2 also includes a limiting plate 24, which is also located between the first support plate 21 and the second support plate 22, and is fixedly connected to the connecting plate 23; see reference Figure 1The limiting plate 24 is positioned close to the second support plate 22 and together with the second support plate 22 and the connecting plate 23, forms an installation position. The outer shell 311 of the sensor 31 is generally rectangular in shape. During assembly, the corresponding outer shell 311 is embedded into the installation position along the depth direction of the groove of the support 2 and is slidably connected to the limiting plate 24 and the second support plate 22 respectively, thereby realizing the detachable fixed connection of the sensor 31 at the second support plate 22. Of course, in order to ensure the installation stability of the sensor 31, the connection method between the side wall of the outer shell 311 and the limiting plate 24 and the second support plate 22 is a tight fit connection.

[0074] It should be noted that, in this embodiment, to ensure the safe installation of the sensor 31 wires, the sensor 31 also includes a lead-out tube 313. The lead-out tube 313 is located on the side wall of the housing 311 and communicates with the inner cavity of the housing 311, so that the wires or part of the sensing element of the sensor 31 can pass through. Correspondingly, a clearance hole is provided on the connecting plate 23 at the corresponding mounting position, so that the lead-out tube 313 can pass through. During assembly, the lead-out tube 313 moves with the housing 311, passes through the clearance hole through the thickness direction of the connecting plate 23, and slides and cooperates with the inner wall of the clearance hole until the housing 311 abuts against the wall of the connecting plate 23 near the mounting position.

[0075] In this embodiment, refer to Figure 1 The support 2 is also an integral structure, that is, the first support plate 21, the second support plate 22, the connecting plate 23 and the limiting plate 24 are integrally formed. For example, the first support plate 21, the second support plate 22 and the connecting plate 23 are formed by bending sheet metal, and then the limiting plate 24 is formed by cutting and bending. Of course, in the embodiments of this application, multiple plates can also be assembled by welding, fastening or other methods to form the support 2 structure. This application does not make specific restrictions on this.

[0076] Furthermore, since different gas transmission and distribution pipelines and gas shut-off valves have different shapes and sizes, in order to improve the adaptability of the shut-off monitoring mechanism 3, in this embodiment, the support 2 is recessed inward at the connection between the first support plate 21 and the connecting plate 23, and a relief groove is formed to avoid the shape of the corresponding gas transmission and distribution pipeline or the shape of the gas shut-off valve.

[0077] To further clarify the implementation principle of the gas shut-off valve monitoring system, an example is given below.

[0078] In one embodiment, a gas shut-off valve shut-off monitoring system is provided. For example, when the sensor triggering principle is magnetic induction, the implementation principle of this application is illustrated. Based on the above embodiments, specifically, refer to... Figure 2 One end of the signal rod has a built-in magnet 3211 to form a trigger end 321. Correspondingly, the sensor 31 has a built-in Hall element 314 or a reed switch 315.

[0079] In practical applications, when the shut-off valve body 1 performs a shut-off action, its valve stem 11 drives the signal rod connected to it to move away from the sensor 31 along the axial direction, so that the magnet 3211 of the trigger end 321 of the signal rod leaves the magnetic induction range of the Hall element 314 or the reed switch 315. The controller of the alarm device receives the on / off signal from the sensor 31, processes it, and uploads it to the designated information platform to control the alarm device to perform a shut-off alarm.

[0080] In one embodiment, a gas shut-off valve shut-off monitoring system is provided. For example, when the sensor triggering principle is contact-based, the implementation principle of this application is illustrated. Based on the above embodiments, the difference between this embodiment and the above embodiments is: (Refer to...) Figure 4 The sensor 31 has a built-in micro switch 316. Initially, the trigger end 321 of the signal rod applies a force to the micro switch 316. When the shut-off valve body 1 performs a shut-off action, its valve stem 11 drives the signal rod connected to it to move away from the micro switch 316 axially, thus removing the force on the micro switch 316 and triggering the sensor 31. The controller of the alarm device receives the on / off signal from the sensor 31, processes it, and uploads it to the designated information platform to control the alarm device to perform a shut-off alarm.

[0081] Similarly, in one embodiment, the provided gas shut-off valve shut-off monitoring system may also have a proximity sensor 317 built into the housing 311, as shown in the reference. Figure 5 The proximity sensor 317 is detachably mounted on the outlet pipe 313 via the support member 318; correspondingly, the signal rod is a metal rod; when the shut-off valve body 1 performs a shut-off action, its valve stem 11 drives the signal rod connected to it to move away from the sensor 31, so that the signal rod leaves the trigger range of the proximity sensor 317, thereby triggering the sensor 31; after receiving and processing the on / off signal of the sensor 31, the controller of the alarm device uploads it to the designated information platform and controls the alarm device to perform a shut-off alarm.

[0082] By employing the method described in this application, the valve stem 11 of the gas shut-off valve is linked to the sensor 31 via a signal rod. The displacement of the shut-off valve's shut-off action is converted into an on / off signal for the sensor 31. After the sensor 31 is electrically or signal-connected to the alarm device, it is connected to the central control platform, forming an electromechanical integrated design. This constructs a three-in-one intelligent monitoring system of "sensing-transmission-decision," enabling real-time monitoring of the gas shut-off valve's shut-off action. This effectively improves the efficiency of troubleshooting shut-off faults in gas transmission and distribution pipelines. Simultaneously, the NB-IoT module exchanges data with the corresponding central control platform and can also generate fault alarm logs, providing a solution to help gas companies upgrade their operation and maintenance model from "passive emergency repair" to "proactive prevention."

[0083] In addition, the highly modular structure makes the gas shut-off valve monitoring system easy to manufacture and assemble, highly versatile, and effectively promotes cost reduction and efficiency improvement for enterprises.

[0084] It should be noted that the above embodiments can be freely combined as needed. The above description is only a preferred embodiment of this application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A gas shut-off valve shut-off monitoring system, characterized in that, include: The shut-off valve body is connected to the gas transmission and distribution pipeline, and a valve stem is provided on it along the movement direction of the valve core; The cut-off monitoring mechanism includes a sensor and a trigger. One end of the trigger is connected to the valve stem, and the other end is set as a trigger end. The trigger end is driven into or out of the sensing range of the sensor by the valve stem. A support, detachably mounted on the shut-off valve body, is used to support the shut-off monitoring mechanism; An alarm device, wherein the controller is signal- or electrically connected to the sensor, so as to receive a cut-off signal from the sensor when the trigger end leaves the sensing range of the sensor, and control the alarm device to activate the alarm.

2. The gas shut-off valve shut-off monitoring system according to claim 1, characterized in that, The sensor is located at the end of the valve stem opposite to the valve core; The sensor includes a cylindrical housing with an opening facing the valve stem. The trigger includes a signal rod, which is arranged parallel to the valve stem, and its end away from the sensor is detachably connected to the valve stem; Initially, the trigger end of the signal rod extends into the housing through the opening of the housing and is within the sensing range of the sensor; When the valve is cut off, the valve stem moves away from the sensor along its own axis to cut off the corresponding gas transmission and distribution pipeline, and drives the signal rod to move synchronously until the trigger end of the signal rod extends out of the housing opening and leaves the sensing range of the sensor.

3. The gas shut-off valve shut-off monitoring system according to claim 2, characterized in that, The sensor also includes a cable outlet tube, which is located on the side wall of the housing and communicates with the inner cavity of the housing, for the passage of the sensor's wires.

4. A gas shut-off valve shut-off monitoring system according to claim 2 or 3, characterized in that, A connecting structure, located between the signal rod and the valve rod, includes a connecting plate; The connecting plate is arranged perpendicular to the signal rod and the valve rod, and its two ends in the length direction are respectively formed with a first mounting position and a second mounting position. The signal rod and the valve rod are respectively detachably connected to the first mounting position and the second mounting position.

5. A gas shut-off valve shut-off monitoring system according to claim 4, characterized in that, The first mounting position includes a first mounting hole; The end of the signal rod opposite to the sensor is threaded through the first mounting hole; Tighten the nut, screw it onto the end of the signal rod away from the sensor, and press it against the end face of the connecting plate away from the sensor.

6. A gas shut-off valve shut-off monitoring system according to claim 4, characterized in that, The second mounting position includes a second mounting hole; The end of the valve stem opposite to the valve core is threaded through the second mounting hole and is detachably fixed to the connecting plate by fasteners.

7. A gas shut-off valve shut-off monitoring system according to claim 6, characterized in that, The connecting plate has a support ring formed by bending one end corresponding to the second mounting hole. The support ring is formed on the side of the connecting plate away from the sensor. The second mounting hole is formed on the annular surface of the support ring on the side opposite to the sensor.

8. A gas shut-off valve shut-off monitoring system according to claim 2, characterized in that, The opening of the outer shell protrudes from the outer surface of the outer shell and a connecting pipe is formed on the surface of the outer shell; The outer circumferential surface of the connecting pipe is provided with external threads; The connecting pipe is used to detachably connect to the opening on the valve stem circumferentially on the shut-off valve body, so as to achieve the coaxial arrangement of the valve stem and the signal rod.

9. A gas shut-off valve shut-off monitoring system according to claim 3, characterized in that, The support includes a first support plate, a second support plate, and a connecting plate. The first support plate and the second support plate are arranged in parallel and spaced apart. The connecting plate is fixed between the first support plate and the second support plate and is perpendicular to the first support plate and the second support plate, so that the cross-section of the support has a U-shaped groove. The support is located at one end of the valve stem in a predetermined radial direction, and its groove faces the valve stem. The first support plate is used to be fixedly connected to the lug seat of the shut-off valve body; The sensor is located in the groove of the support, and the housing is detachably fixed to the second support plate.

10. A gas shut-off valve shut-off monitoring system according to claim 9, characterized in that, The support also includes a limiting plate, which is disposed in the groove of the support and is parallel to the support plate; The connecting plate, the limiting plate, and the second support plate surround and form the mounting position of the sensor; A clearance hole is provided in the connecting plate and corresponds to the mounting position; The outer casing is embedded into the mounting position along the depth direction of the support groove, and slides in cooperation with the limiting plate and the second support plate. The cable outlet tube passes through the thickness direction of the connecting plate from the clearance hole, and slides in cooperation with the inner wall of the clearance hole until the outer casing abuts against the connecting plate.

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