Pipeline gas self-closing valve and gas delivery system

Abstract

The application provides a pipeline gas self-closing valve and a gas delivery system. The pipeline gas self-closing valve comprises a shell, a handle, a transmission shaft, a sheath and a circuit board assembly. The shell is used for being mounted on a gas pipeline. In a first direction, one end of the shell is provided with a mounting opening, and the handle is arranged in the mounting opening. A side surface of the handle is provided with an opening. In a second direction, the circuit board assembly is arranged opposite to the opening. The circuit board assembly comprises a circuit board and a switch in communication connection with the circuit board. The circuit board is used for being connected to a remote server, and the switch is arranged in the opening. The sheath is arranged outside the transmission shaft and can move with the transmission shaft. The transmission shaft and the sheath are arranged in the shell and the handle in the first direction. When the transmission shaft drives the sheath to move in the first direction, the sheath can actuate the switch, so that the circuit board outputs corresponding electric signals. The application can feed back the pressure condition of the gas in the corresponding gas pipeline to the remote server through the circuit board, and is beneficial to improving work efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to gas delivery technology, in particular to a pipeline gas self-closing valve and a gas delivery system. BACKGROUND

[0002] The pipeline gas self-closing valve is installed on the pipeline of the low-pressure gas system. When the gas supply pressure in the pipeline is under pressure or over pressure, the pipeline gas self-closing valve can be automatically closed without electricity or other external power to prevent gas leakage and ensure safety in the case of gas stop, abnormal gas supply, hose falling off, etc. When it is needed to be used again, the pipeline gas self-closing valve must be manually opened.

[0003] In the related technical solution, when the pipeline gas self-closing valve is closed, the staff of the gas company cannot know the reason for closing the pipeline gas self-closing valve, and needs to further obtain the reason for closing the pipeline gas self-closing valve through on-site inspection. The whole process is time-consuming and labor-intensive, and the efficiency is low. SUMMARY

[0004] In order to overcome the above-mentioned defects in the related art, the purpose of the present application is to provide a pipeline gas self-closing valve and a gas delivery system. The pipeline gas self-closing valve of the present application can feed back the closing reason to the remote server, which is beneficial to improve the work efficiency.

[0005] In one aspect, the present application provides a pipeline gas self-closing valve, comprising a housing, a handle, a transmission shaft, a sheath and a circuit board assembly;

[0006] The housing is used to be installed on the gas pipeline. In a first direction, one end of the housing is provided with a mounting port, and the handle is arranged in the mounting port. The side surface of the handle is provided with an opening. In a second direction, the circuit board assembly is arranged opposite to the opening. The circuit board assembly comprises a circuit board and a switch in communication connection with the circuit board. The circuit board is used to connect a remote server, and the switch is arranged in the opening.

[0007] The sheath is arranged outside the transmission shaft and can move with the transmission shaft. The transmission shaft and the sheath are arranged in the housing and the handle in the first direction. When the transmission shaft drives the sheath to move in the first direction, the sheath can actuate the switch to make the circuit board output corresponding electrical signals.

[0008] As described above, the pipeline gas self-closing valve can optionally have a notch on the side surface of the sheath. The sheath and the switch have corresponding first, second and third states. The electrical signals include under pressure signals and over pressure signals.

[0009] In the first state, the switch is located in the notch, and the sheath is not connected with the switch.

[0010] In the second state, the sheath located above the notch abuts against the switch, and the circuit board outputs the under-voltage signal;

[0011] In the third state, the sheath located below the notch abuts against the switch, and the circuit board outputs the over-voltage signal.

[0012] The pipeline gas self-closing valve as described above, optionally, the transmission shaft comprises a first shaft segment and a second shaft segment, the diameter of the second shaft segment is greater than that of the first shaft segment;

[0013] The sheath is provided with a through hole penetrating the sheath in the first direction, the sheath abuts on the second shaft segment, and the first shaft segment is arranged in the through hole.

[0014] The pipeline gas self-closing valve as described above, optionally, the outer side surface of the first shaft segment is provided with at least one groove, the inner surface of the through hole is provided with at least one protrusion arranged in the radial direction of the through hole, and the protrusion abuts in the groove.

[0015] The pipeline gas self-closing valve as described above, optionally, the outer side surface of the first shaft segment comprises a first circular arc surface and at least one first plane, the inner surface of the through hole comprises a second circular arc surface and at least one second plane, the first circular arc surface is matched with the second circular arc surface, and the first plane is matched with the second plane.

[0016] The pipeline gas self-closing valve as described above, optionally, the transmission shaft further comprises a first flange, the first flange is arranged at one end of the second shaft segment away from the first shaft segment, the housing is provided with a connecting portion arranged in the second direction, the connecting portion is connected with the second shaft segment, and the first flange is located at one side of the connecting portion away from the first shaft segment.

[0017] The pipeline gas self-closing valve as described above, optionally, the handle is movable in the mounting port in the first direction, the handle comprises a body and a boss, the boss is arranged in the mounting port, one side of the boss away from the body is provided with a second flange, and the diameter of the second flange is greater than the inner diameter of the mounting port.

[0018] The pipeline gas self-closing valve as described above, optionally, one side of the body away from the boss is provided with a mounting groove, the mounting groove is provided with a press cap, the press cap is movable in the mounting groove in the first direction, and one end of the first shaft segment away from the second shaft segment is fixedly connected with the press cap.

[0019] The pipeline gas self-closing valve as described above optionally further comprises a control box fixedly connected with the shell and the gas pipeline, the control box comprising an opening arranged towards the gap, the circuit board assembly being arranged in the control box, and the switch being arranged through the opening and the gap.

[0020] The control box is provided with a battery electrically connected with the circuit board assembly.

[0021] In another aspect, the application provides a gas delivery system comprising a remote server and a plurality of gas pipelines, each of the gas pipelines being provided with the pipeline gas self-closing valve as described above, and the pipeline gas self-closing valves being in communication connection with the remote server.

[0022] The application provides a pipeline gas self-closing valve and a gas delivery system. The pipeline gas self-closing valve comprises a shell, a handle, a transmission shaft, a sheath and a circuit board assembly. The shell is arranged on a gas pipeline. In a first direction, one end of the shell is provided with a mounting opening, and the handle is arranged through the mounting opening. A side surface of the handle is provided with a gap. In a second direction, the circuit board assembly is arranged opposite to the gap. The circuit board assembly comprises a circuit board and a switch in communication connection with the circuit board. The circuit board is used to connect a remote server, and the switch is arranged through the gap. The sheath is arranged outside the transmission shaft and can move with the transmission shaft. The transmission shaft and the sheath are arranged through the shell and the handle in the first direction. When the transmission shaft drives the sheath to move in the first direction, the sheath can actuate the switch, so that the circuit board outputs a corresponding electric signal. The pipeline gas self-closing valve can drive the transmission shaft to move with the sheath according to the pressure of the gas in the gas pipeline. When the sheath moves, the sheath can actuate the switch and finally abuts against the switch, so that the circuit board connected with the switch outputs a corresponding electric signal. The circuit board feeds back the pressure condition of the gas in the gas pipeline corresponding to the electric signal to the remote server, so as to facilitate the staff to check the reason of the valve body being closed, and to improve the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the application or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the related art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0024] Figure 1 The explosion view of the pipeline gas self-closing valve provided by an embodiment of the application;

[0025] Figure 2 The cross-sectional view of the pipeline gas self-closing valve provided by an embodiment of the application;

[0026] Figure 3A sectional view of a pipeline gas self-closing valve in a first state according to an embodiment of the present application;

[0027] Figure 4 A sectional view of a pipeline gas self-closing valve in a second state according to an embodiment of the present application;

[0028] Figure 5 A sectional view of a pipeline gas self-closing valve in a third state according to an embodiment of the present application;

[0029] Figure 6 A structural diagram of a transmission shaft according to an embodiment of the present application;

[0030] Figure 7 A structural diagram of a sheath according to an embodiment of the present application;

[0031] Figure 8 A structural diagram of a circuit board assembly according to an embodiment of the present application.

[0032] Reference Signs:

[0033] 10 - gas pipeline;

[0034] 100 - housing; 110 - upper housing; 120 - lower housing; 130 - connecting portion;

[0035] 200 - handle; 210 - body; 220 - boss; 230 - second flange; 240 - mounting groove;

[0036] 300 - transmission shaft; 310 - first shaft section; 311 - groove; 312 - first plane; 320 - second shaft section; 330 - first flange;

[0037] 400 - sheath; 410 - notch; 420 - through hole; 421 - protrusion; 422 - second plane;

[0038] 500 - circuit board assembly; 510 - circuit board; 520 - switch;

[0039] 600 - push cap;

[0040] 700 - control box; 710 - control box base; 720 - control box cover;

[0041] 800 - battery;

[0042] X - first direction; Y - second direction. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application.

[0044] All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor fall within the scope of protection of the present application. The embodiments and features in the embodiments below can be combined with each other without conflict.

[0045] The basic principle of the pipeline gas self-closing valve is to make a permanent memory multi-pole permanent magnet linkage mechanism by magnetizing permanent magnet materials according to design requirements, to identify the change of the gas pressure parameter passing therethrough, and to automatically close the valve and cut off the gas source when exceeding the safety setting value. In the related technical scheme, when the pipeline gas self-closing valve is closed, the staff of the gas company cannot know the reason for the closure of the pipeline gas self-closing valve, and needs to further obtain the reason for the closure of the pipeline gas self-closing valve through on-site inspection. The whole process is time-consuming and labor-intensive, and the efficiency is low.

[0046] Therefore, the present application aims to provide a pipeline gas self-closing valve and a gas delivery system. A transmission shaft and a sheath are arranged in the first direction through the housing and the handle, a circuit board assembly is arranged in the second direction of the housing, the circuit board assembly includes a circuit board and a switch in communication connection with the circuit board, an opening is arranged on the side of the handle, the switch is arranged in the opening, and when the sheath is driven by the transmission shaft to move in the first direction, the sheath can actuate the switch to make the circuit board output a corresponding electric signal. The staff can remotely check the pressure of the gas in the gas pipeline corresponding to the electric signal to master the reason for the closure of the valve body, thereby facilitating the improvement of work efficiency.

[0047] The content of the embodiments of the present application will be described in detail below in conjunction with the drawings, so that those skilled in the art can understand the content of the present application in more detail.

[0048] Figure 1 An exploded view of the pipeline gas self-closing valve provided by an embodiment of the present application; Figure 2 A sectional view of the pipeline gas self-closing valve provided by an embodiment of the present application; Figure 3 A sectional view of the pipeline gas self-closing valve provided by an embodiment of the present application when in a first state; Figure 4 A sectional view of the pipeline gas self-closing valve provided by an embodiment of the present application when in a second state; Figure 5 A sectional view of the pipeline gas self-closing valve provided by an embodiment of the present application when in a third state; Figure 6 A structural diagram of the transmission shaft provided by an embodiment of the present application; Figure 7A simplified structural diagram of the sheath provided in one embodiment of this application; Figure 8 A simplified structural diagram of a circuit board assembly provided in an embodiment of this application.

[0049] Please refer to Figures 1-8 This embodiment provides a pipeline gas self-closing valve, including a housing 100, a handle 200, a drive shaft 300, a protective sleeve 400, and a circuit board assembly 500.

[0050] For example, such as Figure 1 and Figure 2 As shown, the housing 100 may include an upper housing 110 and a lower housing 120 disposed opposite to each other in the first direction X. Both the upper housing 110 and the lower housing 120 are generally frustoconical in shape. The larger diameter end of the upper housing 110 is fixedly connected to the larger diameter end of the lower housing 120. The connection method can be threaded, snap-fit, or bolted, etc., and this embodiment does not limit this. The lower housing 120 is used to connect a gas pipe 10. The gas pipe 10 can pass through the lower housing 120 in the second direction Y, thus allowing gas to fill the interior of the housing 100, giving the interior of the housing 100 a certain pressure. In the first direction X, the end of the upper housing 110 opposite to the lower housing has a mounting port, which can be used to install a handle 200. The handle 200 passes through the mounting port and can move relative to the mounting port in the first direction X. The side of the handle 200 has a notch (not shown in the figure), and in the second direction Y, the circuit board assembly 500 is disposed opposite to the notch. Figure 8 As shown, the circuit board assembly 500 includes a circuit board 510 and a switch 520 communicatively connected to the circuit board 510. The circuit board 510 is used to connect to a remote server, and the switch 520 is inserted into a notch to contact the sheath 400.

[0051] The sheath 400 is fitted onto the outside of the drive shaft 300 and can move with the drive shaft 300. The drive shaft 300 and the sheath 400 pass through the housing 100 and the handle 200 along the first direction X. For example, the handle 200 has a through hole corresponding to the mounting opening, and the drive shaft 300 and the sheath 400 pass through the mounting opening and the through hole. When the drive shaft 300 drives the sheath 400 to move along the first direction X under the pressure inside the housing 100 and / or under the action of the component's own weight, the sheath 400 can toggle the switch 520. Depending on the direction in which the switch 520 is toggled and / or the different contact positions between the switch 520 and the sheath 400, the circuit board 510 can output different electrical signals to correspond to different gas pressure conditions inside the gas pipeline.

[0052] In this embodiment, the gas pipeline self-closing valve can move the transmission shaft 300 to drive the sheath 400 according to the pressure of the gas inside the gas pipeline 10. When the sheath 400 moves, it can toggle the switch 520 and eventually come into contact with the switch 520, thereby causing the circuit board 510 connected to the switch 520 to output a corresponding electrical signal. The circuit board 510 feeds back the gas pressure inside the gas pipeline corresponding to the electrical signal to the remote server, so that the staff can check the reason for the valve body closing, which helps to improve work efficiency.

[0053] In some embodiments, such as Figure 7 As shown, the side of the sheath 400 is provided with a notch 410. The sheath 400 and the switch 520 have corresponding first, second and third states, and the electrical signals include undervoltage signals and overvoltage signals.

[0054] like Figure 3 As shown, in the first state, the switch 520 is located inside the notch 410, and the sheath 400 is not connected to the switch 520. At this time, the circuit board 510 will not generate an electrical signal, and the pipeline gas self-closing valve is in normal working condition.

[0055] like Figure 4 As shown, in the second state, the sheath 400 above the notch 410 abuts against the switch 520. At this time, the circuit board 510 outputs an undervoltage signal, the pipeline gas self-closing valve closes, and the pressure of the gas inside the gas pipeline is in an undervoltage state. For example, when the pipeline gas self-closing valve changes from the first state to the second state, the pressure of the gas inside the gas pipeline is less than the weight of the component itself. Therefore, the drive shaft 300 drives the sheath 400 to move inward toward the housing 100 along the first direction X, and the toggle switch 520 rotates clockwise, causing the circuit board 510 to output an undervoltage signal.

[0056] like Figure 5 As shown, in the third state, the sheath 400 located below the notch 410 abuts against the switch 520. At this time, the circuit board 510 outputs an overpressure signal, the pipeline gas self-closing valve closes, and the pressure of the gas inside the gas pipeline is in an overpressure state. For example, when the pipeline gas self-closing valve changes from the first state to the third state, the pressure of the gas inside the gas pipeline is greater than the weight of the component itself. Therefore, the drive shaft 300 drives the sheath 400 to move away from the housing 100 along the first direction X, and the toggle switch 520 rotates counterclockwise, causing the circuit board 510 to output an overpressure signal.

[0057] In some embodiments, please continue to refer to Figure 6 and Figure 7The drive shaft 300 includes a first shaft section 310 and a second shaft section 320, the diameter of the second shaft section 320 being larger than the diameter of the first shaft section 310; the sheath 400 has a through hole 420 extending through the sheath 400 along the first direction X, the sheath 400 abuts against the second shaft section 320, and the first shaft section 310 passes through the through hole 420, thereby allowing the sheath 400 to move with the drive shaft 300.

[0058] Furthermore, the outer surface of the first shaft segment 310 is provided with at least one groove 311, and the inner surface of the through hole 420 is provided with at least one protrusion 421. The protrusion 421 is arranged along the radial direction of the through hole 420 and abuts against the groove 311. Through the cooperation between the protrusion 421 and the groove 311, the drive shaft 300 and the sheath 400 are limited in the radial direction, preventing radial misalignment between the two during movement.

[0059] The outer surface of the first shaft segment 310 includes a first arc surface and at least one first plane 312. It is understood that... Figure 6 Only one first plane 312 is shown in the diagram. In other possible embodiments, the outer surface of the first shaft segment 310 may have two or more first planes 312. Each first plane 312 may be connected to or not connected to each other, depending on the specific requirements. Correspondingly, the inner surface of the through hole 420 of the sheath 400 includes a second arc surface and at least one second plane 422. When the drive shaft 300 and the sheath 400 are engaged, the first arc surface and the second arc surface are adapted to each other, and the first plane 312 and the second plane 422 are adapted to each other. Through the above arrangement, the drive shaft 300 and the sheath 400 can be limited in the axial direction (i.e., the first direction X), preventing radial misalignment during their movement.

[0060] Please continue to refer to Figure 1 , Figure 2 and Figure 6 In some embodiments, the drive shaft 300 further includes a first flange 330, which is disposed at one end of the second shaft segment 320 opposite to the first shaft segment 310. A connecting portion 130 is provided within the housing 100 along the second direction Y. The connecting portion 130 may be disposed between the upper housing 110 and the lower housing 120. The cavity between the connecting portion 130 and the upper housing 110 does not contain gas, while the cavity between the connecting portion 130 and the lower housing 120 contains gas. The connecting portion 130 is connected to the second shaft segment 320, and the first flange 330 is located on the side of the connecting portion 130 opposite to the first shaft segment 310.

[0061] The handle 200 can move within the mounting opening along a first direction X. The handle 200 includes a body 210 and a boss 220. The boss 220 is disposed within the mounting opening. A second flange 230 is provided on the side of the boss 220 opposite to the body 210. The diameter of the second flange 230 is larger than the inner diameter of the mounting opening. The second flange 230 can serve as a limiting device. When the handle 200 moves away from the housing 100, the second flange 230 can abut against the mounting opening to prevent the handle 200 from detaching from the mounting opening.

[0062] A mounting groove 240 is provided on the side of the main body 210 opposite to the boss 220. The mounting groove 240 is located at the upper end of the main body 210 and extends along the first direction X. A push cap 600 is provided in the mounting groove 240, and the push cap 600 can move within the mounting groove 240 along the first direction X. For example, the end of the first shaft segment 310 opposite to the second shaft segment 320 is fixedly connected to the push cap 600. The push cap 600 may be provided with a threaded hole or other structure. The first shaft segment 310 and the push cap 600 are threadedly connected. Driven by the first shaft segment 310, the push cap 600 moves within the mounting groove 240 along the first direction X. The push cap 600 and the first flange 330 can also limit the movement of the drive shaft 300.

[0063] In some embodiments, such as Figure 1 As shown, the pipeline gas self-closing valve in this embodiment also includes a control box 700. The control box 700 is fixedly connected to the housing 100 and the gas pipeline 10. For example, the control box 700 can be fixedly connected to the housing 100 and the gas pipeline 10 by screws to facilitate installation and disassembly. The control box 700 includes a control box base 710 and a control box cover 720. The control box base 710 and the control box cover 720 can be connected and fixed by a snap-fit ​​method, and the two together form an installation cavity; the circuit board assembly 500 can be disposed in the installation cavity. The control box 700 also has an opening on the side facing the notch. The opening can be disposed on the control box base 710, and the switch 520 passes through the opening and the notch to abut against the sheath 400.

[0064] The control box 700 also contains a battery 800, which is electrically connected to the circuit board assembly 500 to provide power to the circuit board assembly 500. The battery 800 can be a lead-acid battery, lithium battery, etc., and its specific model can be set as needed; the battery 800 and the circuit board assembly 500 can be connected by wires.

[0065] This embodiment also provides a gas delivery system, including a remote server and multiple gas pipelines 10. The gas pipelines 10 are equipped with the above-mentioned gas pipeline self-closing valves, which are communicatively connected to the remote server.

[0066] In this embodiment, the gas pipeline 10 can be, for example, the user's inlet pipeline, and each user's inlet pipeline can be equipped with a gas pipeline self-closing valve. The gas pipeline self-closing valve and the remote server can communicate via, for example, NB-IoT communication. Therefore, staff can monitor the status of each user's gas pipeline self-closing valve through the remote server, thereby understanding the internal pressure status of each user's gas pipeline 10, which helps improve work efficiency.

[0067] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0068] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0069] It should be noted that in the description of this application, the terms "first" and "second" are used only for convenience in describing different components and should not be construed as indicating or implying a sequential relationship, relative importance, or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features.

[0070] The embodiments or implementation methods in this application are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0071] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with an embodiment or example that are included in at least one embodiment or example of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A self-closing valve for pipeline gas, characterized in that, Includes housing, handle, drive shaft, sheath, and circuit board assembly; The housing is used for installation on a gas pipeline. In a first direction, one end of the housing is provided with an installation port, and the handle is inserted into the installation port. The side of the handle is provided with a notch. In a second direction, the circuit board assembly is arranged opposite to the notch. The circuit board assembly includes a circuit board and a switch that is communicatively connected to the circuit board. The circuit board is used to connect to a remote server, and the switch is inserted into the notch. The sheath is fitted over the outside of the drive shaft and can move with the drive shaft. The drive shaft and the sheath pass through the housing and the handle along the first direction. When the drive shaft drives the sheath to move along the first direction, the sheath can toggle the switch so that the circuit board outputs a corresponding electrical signal. The side of the sheath has a notch, and the sheath and the switch have corresponding first, second and third states. The electrical signal includes an undervoltage signal and an overvoltage signal. In the first state, the switch is located within the notch, and the sheath is not connected to the switch; In the second state, the sheath located above the notch abuts against the switch, and the circuit board outputs the undervoltage signal; In the third state, the sheath located below the notch abuts against the switch, and the circuit board outputs the overpressure signal; The drive shaft includes a first shaft section and a second shaft section, wherein the diameter of the second shaft section is larger than the diameter of the first shaft section; The sheath has a through hole extending through it in a first direction, the sheath abuts against the second shaft segment, and the first shaft segment passes through the through hole; The outer surface of the first shaft segment is provided with at least one groove, and the inner surface of the through hole is provided with at least one protrusion. The protrusion is arranged along the radial direction of the through hole and abuts against the groove. The outer surface of the first shaft segment includes a first arc surface and at least one first plane, and the inner surface of the through hole includes a second arc surface and at least one second plane. The first arc surface is adapted to the second arc surface, and the first plane is adapted to the second plane.

2. The pipeline gas self-closing valve according to claim 1, characterized in that, The drive shaft further includes a first flange, which is disposed at one end of the second shaft segment away from the first shaft segment. The housing is provided with a connecting part disposed along the second direction, which is connected to the second shaft segment, and the first flange is located on the side of the connecting part away from the first shaft segment.

3. The pipeline gas self-closing valve according to claim 1, characterized in that, The handle can move along the first direction within the mounting opening. The handle includes a body and a boss. The boss is disposed within the mounting opening. A second flange is provided on the side of the boss away from the body. The diameter of the second flange is larger than the inner diameter of the mounting opening.

4. The pipeline gas self-closing valve according to claim 3, characterized in that, The main body has a mounting groove on the side away from the boss, and a button is provided in the mounting groove. The button can move in the mounting groove along the first direction. The end of the first shaft segment away from the second shaft segment is fixedly connected to the button.

5. The pipeline gas self-closing valve according to claim 1, characterized in that, It also includes a control box, which is fixedly connected to the housing and the gas pipeline. The control box includes an opening facing the notch. The circuit board assembly is disposed inside the control box. The switch passes through the opening and the notch. The control box contains a battery, which is electrically connected to the circuit board assembly.

6. A gas transmission system, characterized in that, It includes a remote server and multiple gas pipelines, wherein the gas pipelines are equipped with a gas pipeline self-closing valve as described in any one of claims 1-5, and the gas pipeline self-closing valve is communicatively connected to the remote server.

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