Automatic gas pipeline cut-off device

Abstract

The application discloses a kind of gas pipeline automatic cut-off device, including shell and cover, cover is provided with gas inlet connector, shell is provided with gas outlet connector;Shell is provided with the placement groove that is communicated with the both gas inlet connector and gas outlet connector, baffle is installed in placement groove, baffle cooperates the wall surface of placement groove and forms fluid gap, baffle is provided with through valve, through valve and gas outlet connector eccentric arrangement;Shell is installed with for plugging through valve plugging assembly.The application has beneficial effects: baffle can change the flow direction of gas, through valve and gas outlet connector eccentric arrangement can reserve position for plugging assembly and make motor external, ensure that gas will not enter the inside of motor, avoid arc produced by motor ignites gas and causes safety accident;The longitudinal section of through valve and plug is trapezoidal, can make the device have the function of controlling gas flow;The utility model has the advantages of convenient maintenance, high safety, gas flow adjustable and the like.

Description

Technical Field

[0001] This application relates to the field of pipeline valve technology, and in particular to an automatic gas pipeline shut-off device. Background Technology

[0002] Natural gas is a common energy source in daily life, primarily used by residents and businesses to release heat through combustion. It is typically colorless and invisible to the naked eye when in the air; however, a flame in this state can ignite a fire. Currently, natural gas is generally transported through pipelines, which consist of main pipelines and branch pipelines. Branch pipelines are usually detachable and installed on the main pipeline. Connecting pipelines typically involves interlocking joints; if these joints are damaged by impact or aging, gaps may form, leading to gas leaks.

[0003] Currently, to prevent accidents caused by gas leaks, gas pipelines are typically equipped with shut-off devices. These devices detect changes in gas pressure and control the sealing of the pipeline by a plug, thereby improving the safety of gas transmission. Most existing gas shut-off devices use a direct-insertion type, where a hole is made in the pipeline wall, and the plug is inserted directly into the pipeline to seal when the gas pressure is abnormal. However, because the plug is perpendicular to the gas flow, the gas pressure acts directly on the side of the plug, which can easily damage and bend the plug over time, leading to reduced sealing performance. Therefore, there is an urgent need for a gas shut-off device with good sealing performance and a long service life. Utility Model Content

[0004] One objective of this application is to provide an automatic gas pipeline shut-off device that can solve at least one of the defects in the aforementioned background art.

[0005] To achieve at least one of the above objectives, the technical solution adopted in this application is as follows: an automatic gas pipeline shut-off device, comprising a housing and a cover, wherein an inlet connector is provided on the cover and an outlet connector is provided on the housing; a placement groove communicating with both the inlet connector and the outlet connector is provided inside the housing, a baffle is installed in the placement groove, the baffle and the wall of the placement groove form a fluid gap, a through valve is provided on the baffle, the through valve is eccentrically arranged with respect to the outlet connector; and a sealing assembly for sealing the through valve is installed on the housing.

[0006] With the above setup, the flow direction of the gas can be changed by the baffle. The gas in the inlet port enters the fluid gap through the valve, and then moves along the direction of the fluid gap to the outlet port. The eccentric arrangement of the through valve and the outlet port provides space for the sealing assembly, ensuring that the movement direction of the sealing assembly is parallel to the gas flow direction. This allows the sealing assembly to tightly seal the through valve and also improves the bending resistance of the sealing assembly, preventing it from bending under gas pressure.

[0007] Preferably, the sealing assembly includes a motor and a plug. The housing has a mounting port, and the motor is mounted in the mounting port. The motor drives the plug to move closer to or away from the through valve. This configuration allows the motor to be detachably mounted to the housing via the mounting port, enabling quick replacement and repair in case of motor failure. Furthermore, external mounting of the motor ensures that gas does not enter the motor's interior, preventing the motor from generating an electric arc that could ignite the gas and cause a safety accident.

[0008] Preferably, a first sealing ring is provided on the mounting port and / or the motor, and a mutually cooperating limiting structure is provided on the motor and the mounting port. This arrangement allows the motor to be stably mounted on the housing via the limiting structure, while the first sealing ring improves sealing and prevents gas leakage from the joint between the mounting port and the motor.

[0009] Preferably, a sealing gasket is provided on the end face of the plug. This arrangement allows the gasket to seal the through valve, preventing gas leakage through the gap between the plug and the through valve.

[0010] Preferably, the through valve has multiple perforations, and both the longitudinal cross-section of the through valve and the plug are trapezoidal. The plug is inserted into the through valve and seals the perforations through the sealing gasket. This configuration allows the sealing gasket to block the perforations when the plug is inserted into the through valve, thereby cutting off the gas flow path. Furthermore, designing the longitudinal cross-sections of the through valve and plug as trapezoids provides the device with the function of controlling gas flow. By changing the fitting depth of the plug within the through valve, the gap between the plug and the through valve can be adjusted, thus achieving the purpose of regulating the gas flow.

[0011] Preferably, the air inlet and air outlet are concentrically arranged, a first sealing element is installed at the mating point of the cover and the housing, and a second sealing element is installed at the mating point of the baffle and the cover. This arrangement further improves the sealing effect of the sealing assembly. The gas in the air inlet is blocked by the baffle and moves along the end face of the baffle to the valve, preventing direct pressure action on the sealing assembly. The first sealing element prevents gas at the air inlet from entering the air outlet through the gap between the baffle and the cover. The second sealing element prevents gas in the air outlet from leaking to the outside through the gap between the cover and the housing.

[0012] Preferably, the cover is provided with a mounting groove, and the mounting groove has a through hole communicating with the air inlet connector. A sensing module and a pressure plate for sealing the mounting groove are installed in the mounting groove, and a second sealing ring is provided between the sensing module and the through hole. With this configuration, the gas in the air inlet connector can enter the mounting groove through the through hole, and the sensing module is used to monitor the gas pressure in the pipeline.

[0013] Preferably, the system also includes a housing, with both the housing and the cover installed inside the housing. A controller is also installed inside the housing, and the controller is connected to both the sensing module and the motor circuit. With this configuration, when the air pressure in the pipeline is abnormal, the sensing module can transmit a signal to the controller, which then sends a command to the motor to block the through valve. When the air pressure in the pipeline is normal, the sensing module can transmit a signal to the controller, which then sends a command to the motor to move the plug away from the through valve.

[0014] Preferably, a power supply component connected to the motor circuit is installed inside the housing. The power supply component includes a battery and a power compartment, with the battery removably installed in the power compartment. This configuration allows the power supply component to power the motor, controller, and sensing module. When the battery power is low, the device can be quickly restored to normal operation by replacing the battery.

[0015] Preferably, a display screen is also installed on the housing to show the operating status of the motor. This configuration allows for quick determination of whether the gas supply is cut off via the display screen, further improving the convenience of the device.

[0016] Compared with the prior art, the beneficial effects of this application are as follows:

[0017] The baffle can change the flow direction of the gas, preventing the gas from directly entering the gas outlet. The eccentric arrangement of the valve and the gas outlet can reserve a position for the sealing component, so that the movement direction of the sealing component is parallel to the flow direction of the gas. On the one hand, the sealing component can seal the valve tightly, and on the other hand, it can prevent the gas pressure from acting directly on the side of the sealing component, thus preventing the sealing component from bending under the action of gas pressure.

[0018] The motor and battery in this application are both detachable, allowing for direct replacement in case of motor or battery failure, further improving the maintenance efficiency of the device. External motor placement ensures that gas does not enter the motor, preventing electric arcing and potential gas ignition accidents. The longitudinal cross-sections of both the valve and the plug are trapezoidal, providing the device with gas flow control functionality. The gas flow is adjusted by changing the fitting depth of the plug within the valve, thereby regulating the gap between the plug and the valve. This invention offers advantages such as convenient maintenance, good sealing, and adjustable gas flow. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the cross-sectional structure of the automatic gas pipeline shut-off device in this application. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the fit between the shell and the cover in this application.

[0021] Figure 3 This is a schematic diagram of the shell structure in this application.

[0022] Figure 4 This is a schematic diagram of the sealing component in this application.

[0023] Figure 5 This is a schematic diagram of the baffle structure in this application.

[0024] Figure 6 This is a schematic diagram of the cross-sectional structure of the automatic gas pipeline shut-off device in this application. Figure 2 .

[0025] Figure 7 This is a schematic diagram of the exploded structure of the automatic gas pipeline shut-off device in this application.

[0026] In the diagram: 1. Housing; 11. Air outlet connector; 12. Placement slot; 13. Mounting port; 100. Baffle; 101. Through valve; 102. Perforation; 2. Cover; 21. Air inlet connector; 22. Mounting slot; 200. First sealing ring; 3. Sealing assembly; 31. Motor; 32. Plug; 300. First seal; 301. Second seal; 320. Sealing gasket; 4. Outer shell; 41. Display screen; 400. Sensing module; 401. Pressure plate; 5. Power supply assembly; 51. Power supply compartment; 52. Battery. Detailed Implementation

[0027] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and 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 should not be construed as limiting the specific protection scope of this application.

[0029] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0030] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0031] One aspect of this application provides an automatic gas pipeline shut-off device, one preferred embodiment of which is, for example... Figure 1 and Figure 2 As shown, the system includes a housing 1 and a cover 2. The cover 2 is fastened to the housing 1 with fasteners. An inlet connector 21 is provided on the cover 2, and an outlet connector 11 is provided on the housing 1. A placement groove 12, communicating with both the inlet connector 21 and the outlet connector 11, is provided inside the housing 1, allowing gas in the pipeline to be transported from the inlet connector 21 to the outlet connector 11. A baffle 100 is installed inside the placement groove 12, forming a fluid gap with the wall of the placement groove 12, allowing gas to be transported within the fluid gap. A through valve 101 is provided on the baffle 100, and the through valve 101 is eccentrically positioned with respect to the outlet connector 11, ensuring that gas in the inlet connector 21 must pass through the fluid gap before being delivered to the outlet connector 11. Additionally, a sealing assembly 3 for blocking the through valve 101 is installed on the housing 1. When the gas pressure in the pipeline is abnormal, the sealing assembly 3 can block the through valve 101, thereby cutting off the gas delivery path and ensuring that gas does not leak to the outside. When the gas pressure inside the gas returns to normal, the sealing component 3 releases its blocking effect on the through valve 101, and the gas delivery path is open again.

[0032] It should be noted that the eccentric arrangement of the through valve 101 and the gas outlet connector 11 in this application can reserve a position for the sealing component 3, ensuring that the direction of movement of the sealing component 3 is parallel to the direction of gas flow. On the one hand, this allows the sealing component 3 to seal the through valve 101 tightly, and on the other hand, it prevents gas pressure from acting directly on the side of the sealing component 3, thus avoiding the sealing component 3 from bending under the action of gas pressure.

[0033] Specifically, such as Figure 3 and Figure 4 As shown, the sealing assembly 3 includes a motor 31 and a plug 32. The housing 1 is provided with an installation port 13. The motor 31 is installed in the installation port 13. The plug 32 is arranged concentrically with the through valve 101. The motor 31 is used to move the plug 32 closer to or further away from the through valve 101. When the plug 32 is close to the through valve 101, it can seal the through valve 101. When the plug 32 is far away from the through valve 101, it releases the sealing state of the through valve 101.

[0034] Understandably, by detachably mounting the motor 31 to the housing 1 via the mounting port 13, the motor 31 can be quickly replaced or repaired in case of malfunction. Furthermore, external mounting of the motor 31 ensures that gas cannot enter its interior, preventing the electric arc generated by the motor 31 from igniting the gas and causing a safety accident.

[0035] Furthermore, such as Figure 4 As shown, a first sealing ring 200 is provided on the motor 31, and a mutually cooperating limiting structure is provided on the motor 31 and the mounting port 13. The limiting structure is threaded, with mutually cooperating threads on the outer side of the motor 31 and the inner side of the mounting port 13. The operator can install or remove the motor 31 simply by tightening it. Of course, in other embodiments of this application, the limiting structure can also be a snap-fit ​​or fastener connection. When the motor 31 is fixedly installed on the mounting port 13, the mating surface of the motor 31 can press the first sealing ring 200 tightly against the mating surface of the mounting port 13, further improving the sealing performance of the motor 31 installation and preventing gas leakage from the joint between the mounting port 13 and the motor 31.

[0036] In this embodiment, as Figure 4As shown, a sealing gasket 320 is provided at the end of the plug 32. When the plug 32 approaches the through valve 101, the sealing gasket 320 adheres to the baffle 100 and completely covers the through valve 101. Then, the motor 31 continues to drive the plug 32 to move towards the through valve 101. At this time, the plug 32 squeezes the sealing gasket 320 tightly against the through valve 101, thereby completing the sealing of the through valve 101 and preventing gas leakage through the gap between the plug 32 and the through valve 101.

[0037] Specifically, such as Figure 4 and Figure 5 As shown, the through valve 101 has multiple perforations 102. The longitudinal cross-section of the through valve 101 is trapezoidal, and the longitudinal cross-section of the plug 32 is also trapezoidal. When the plug 32 extends into the through valve 101, the sealing gasket 320 can be used to seal the perforations 102, thereby cutting off the flow path of the gas. Furthermore, designing both the through valve 101 and the plug 32 with trapezoidal longitudinal cross-sections provides the device with the function of controlling the gas flow rate. When the user needs to adjust the gas flow rate, the gap between the plug 32 and the through valve 101 can be adjusted by controlling the mating depth between the plug 32 and the through valve 101 through the motor 31, thereby achieving the purpose of adjusting the gas flow rate.

[0038] To further improve the sealing effect of the sealing component 3, in some embodiments of this application, such as Figure 1 As shown, the inlet connector 21 and the outlet connector 11 are arranged concentrically. The gas in the inlet connector 21 is blocked by the baffle 100 and moves along the end face of the baffle 100 to the valve 101, preventing the gas pressure from acting directly on the sealing component 3 and further improving the sealing effect of the sealing component 3. A first seal 300 is installed at the mating point of the cover 2 and the housing 1, and a second seal 301 is installed at the mating point of the baffle 100 and the cover 2. The first seal 300 can prevent the gas at the inlet connector 21 from entering the outlet connector 11 through the gap between the baffle 100 and the cover 2; the second seal 301 can prevent the gas in the outlet connector 11 from leaking to the outside through the gap between the cover 2 and the housing 1.

[0039] In this embodiment, as Figure 1 and Figure 2 As shown, to further improve the intelligence of the automatic gas pipeline shut-off device, an installation groove 22 is provided on the cover 2. The installation groove 22 has a through hole communicating with the gas inlet connector 21. A sensing module 400 and a pressure plate 401 for sealing the installation groove 22 are installed inside the installation groove 22. A second sealing ring is provided between the sensing module 400 and the through hole to prevent gas from entering the installation groove 22. The pressure plate 401 seals the sensing module 400 within the installation groove 22. Gas in the gas outlet connector 11 contacts the sensing module 400 through the through hole, allowing the sensing module 400 to directly detect the gas pressure inside the pipeline.

[0040] Furthermore, such as Figure 1 and Figure 6 As shown, the automatic gas pipeline shut-off device also includes a housing 4. The housing 1 and the cover 2 are both installed inside the housing 4. A controller (not shown in the figure) is also installed inside the housing 4. The controller is also electrically connected to the sensing module 400 and the motor 31. When the gas pressure in the pipeline is abnormal, the sensing module 400 can transmit a signal to the controller. Then the controller sends a command to the motor 31 to drive the plug 32 to block the through valve 101. When the gas pressure in the pipeline is normal, the sensing module 400 can transmit a signal to the controller. Then the controller sends a command to the motor 31 to move the plug 32 away from the through valve 101.

[0041] In this embodiment, as Figure 6 and Figure 7 As shown, a power supply component 5, which is electrically connected to the motor 31, is installed inside the housing 4. The power supply component 5 includes a battery 52 and a power compartment 51, wherein the battery 52 is detachably installed in the power compartment 51. The power supply component 5 can supply power to the motor 31, the controller, and the sensing module 400. When the battery 52 has low power, the device can be quickly restored to normal operation by replacing the battery 52.

[0042] Furthermore, such as Figure 7 As shown, a display screen 41 is also installed on the outer casing 4. The display screen 41 is used to display the working status of the motor 31. The operator can quickly determine whether the gas supply is cut off through the display screen 41, further improving the convenience of this device.

[0043] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. An automatic gas pipeline shut-off device, characterized in that, The device includes a housing (1) and a cover (2). The cover (2) is provided with an air inlet connector (21), and the housing (1) is provided with an air outlet connector (11). The housing (1) is provided with a placement groove (12) that communicates with both the air inlet connector (21) and the air outlet connector (11). A baffle (100) is installed in the placement groove (12). The baffle (100) forms a fluid gap with the wall of the placement groove (12). A through valve (101) is provided on the baffle (100). The through valve (101) is eccentrically arranged with the air outlet connector (11). A sealing assembly (3) for sealing the through valve (101) is installed on the housing (1).

2. The automatic gas pipeline shut-off device as described in claim 1, characterized in that, The sealing assembly (3) includes a motor (31) and a plug (32). The housing (1) is provided with an installation port (13). The motor (31) is installed in the installation port (13). The motor (31) is used to drive the plug (32) to approach or move away from the through valve (101).

3. The automatic gas pipeline shut-off device as described in claim 2, characterized in that, A first sealing ring (200) is provided on the mounting port (13) and / or the motor (31), and a mutually cooperating limiting structure is provided on the motor (31) and the mounting port (13).

4. The automatic gas pipeline shut-off device as described in claim 2, characterized in that, The end face of the plug (32) is provided with a sealing gasket (320).

5. The automatic gas pipeline shut-off device as described in claim 4, characterized in that, The through valve (101) is provided with a plurality of perforations (102). The longitudinal section of the through valve (101) is trapezoidal. The longitudinal section of the plug (32) is trapezoidal. The plug (32) is used to extend into the through valve (101) and block the perforations (102) through the sealing gasket (320).

6. The automatic gas pipeline shut-off device as described in claim 1, characterized in that, The air inlet connector (21) and the air outlet connector (11) are arranged concentrically. A first sealing element (300) is installed at the mating point of the cover (2) and the housing (1), and a second sealing element (301) is installed at the mating point of the baffle (100) and the cover (2).

7. The automatic gas pipeline shut-off device as described in claim 2, characterized in that, The cover (2) is provided with an installation groove (22), and the installation groove (22) is provided with a through hole that communicates with the air inlet connector (21). The installation groove (22) is provided with a sensing module (400) and a pressure plate (401) for sealing the installation groove (22). A second sealing ring is provided between the sensing module (400) and the through hole.

8. The automatic gas pipeline shut-off device as described in claim 7, characterized in that, It also includes a housing (4), the housing (1) and the cover (2) are both installed inside the housing (4), and a controller is also installed inside the housing (4), the controller is connected to the sensing module (400) and the motor (31) circuit.

9. The automatic gas pipeline shut-off device as described in claim 8, characterized in that, The housing (4) contains a power supply component (5) that is connected to the motor (31) circuit. The power supply component (5) includes a battery (52) and a power compartment (51). The battery (52) is detachably installed in the power compartment (51).

10. The automatic gas pipeline shut-off device as described in claim 8, characterized in that, The housing (4) is also equipped with a display screen (41), which is used to display the working status of the motor (31).

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