Natural gas valve with gas leakage prompting function

Abstract

The utility model relates to the field of valves, and discloses a natural gas valve with a gas leakage prompting function, which comprises a valve body, and the front end and the rear end of the valve body are respectively in threaded connection with a natural gas pipeline. If leakage occurs at the connecting position of the natural gas pipeline and the valve body, leaked natural gas is discharged through the outer side of the transparent cover, and in the natural gas discharging process, the multiple prompt paper strips located in the transparent cover float under the action of the airflow of the natural gas to prompt the natural gas to be discharged. A user can judge whether natural gas leaks or not by observing whether the prompt paper strip in the transparent cover flutters or not, and due to the fact that the flutters of the prompt paper strip are caused by flowing of leaked natural gas, the design does not need an additional power source, the structure of the valve is simplified, cost is reduced, and practicability is high. The prompt paper sheet is used as a disposable part or a part easy to replace, the maintenance cost is low, and the replacement process is simple.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to a natural gas valve with a gas leakage prompting function. Background Art

[0002] A natural gas valve is a device used to control the flow of gas in a natural gas pipeline. It is usually installed on the pipeline of a natural gas supply system and can be opened and closed manually or automatically to regulate or prevent the flow of natural gas.

[0003] According to China's authorized patent announcement number: CN206738650U, a natural gas valve is disclosed, including a valve body, a sealing device and a valve core. A valve stem is installed in the middle of the valve body, and a nut is installed at the upper end of the valve stem. A valve seat is provided at the lower end of the valve core, and the valve core is located below the sealing device. A connecting rod is fixed to the upper end of the valve core, and a valve stem is provided at the upper end of the connecting rod. An air outlet is installed on the left side of the valve body, and a one-way valve is provided inside the air outlet. Pipe connectors are provided on the outside of the air inlet and the air outlet. The natural gas valve is provided with a sealing device to prevent natural gas from leaking from the connection of parts. The pipeline connector is composed of a locking tooth clamp, a sealing ring, a clamping tooth and a locking ring. A sealing ring is provided on the right side of the locking tooth clamp, and a locking ring is installed on the left side of the clamping tooth. The inner diameter of the locking tooth clamp is larger than the outer diameter of the sealing ring. The internal thread of the locking tooth clamp is consistent with the outer thread of the locking ring. The structure is simple, can firmly fix the external natural gas pipeline, and is easy to install and disassemble. However, the natural gas valve still has shortcomings. The natural gas valve does not have an intuitive prompt function when a leak occurs. The user cannot know the leak in time, which may lead to safety hazards. Some valves with electronic detection systems have high maintenance and repair costs and require professional technicians to operate, which is not conducive to the economic burden of users. Utility Model Content

[0004] In response to the deficiencies in the prior art, the present invention provides a natural gas valve with a gas leakage prompt function, which solves the problem that the natural gas valve has no intuitive prompt function when a leak occurs, and the user cannot be informed of the leakage in time, which may lead to safety hazards.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a natural gas valve with a gas leakage prompt function, comprising a valve body, wherein both front and rear ends of the valve body are threadedly connected to natural gas pipelines, and both front and rear ends of the valve body and the connection positions of the two natural gas pipelines are provided with gas leakage prompt components, and the gas leakage prompt components include a fixing ring, a transparent cover, a positioning cylinder, a threaded column, an arc-shaped gasket, a prompt paper and a connecting cap, the outer sides of the front and rear ends of the valve body are fixedly connected to a protective sleeve, the outer side of the protective sleeve is fixedly connected to a fixing ring, the outer side of the fixing ring is fixedly connected to a transparent cover, four positioning cylinders are fixedly connected to the outer side of the transparent cover, the middle of the four positioning cylinders are threadedly connected to a threaded column, the lower end of the threaded column is rotatably connected to a arc-shaped gasket, the surface of the arc-shaped gasket is fitted on the inner wall surface of the transparent cover, and two prompt paper pieces are provided between the two sides of the arc-shaped gasket and the inner wall of the transparent cover.

[0006] Preferably, a connecting cap is fixedly connected to the upper end of the threaded column.

[0007] Preferably, a ball valve is provided in the middle of the valve body, and a natural gas through hole is opened in the middle of the ball valve.

[0008] Preferably, a regulating valve is fixedly connected to the upper end of the ball valve, and the regulating valve is rotatably connected to the upper surface of the valve body.

[0009] Preferably, threaded rings are provided on the inner wall surfaces at both the front and rear ends of the valve body.

[0010] Preferably, the four positioning cylinders are distributed in an annular array on the outer surface of the valve body.

[0011] Beneficial effects

[0012] The utility model provides a natural gas valve with a gas leakage warning function. Compared with the existing technology, it has the following beneficial effects:

[0013] 1. In the present invention, by providing a warning paper, if a leak occurs at the connection between the natural gas pipeline and the valve body during use of the natural gas valve, the leaked natural gas is discharged through the outside of the transparent cover. During the natural gas discharge process, multiple warning paper strips located inside the transparent cover flutter under the action of the natural gas flow. The user can determine whether there is a natural gas leak by observing whether the warning paper strips inside the transparent cover flutter. Since the fluttering of the warning paper strips is caused by the flow of leaking natural gas, this design does not require an additional power supply, simplifies the valve structure, and reduces costs. As the warning paper strips are disposable or easily replaceable components, the maintenance cost is low and the replacement process is simple.

[0014] 2. In the present invention, by providing an arc-shaped gasket, when the reminder paper needs to be replaced due to moisture, the user can twist the threaded column at the corresponding position of the arc-shaped gasket to move the arc-shaped gasket toward the center of the transparent cover. At this time, the two reminder papers sandwiched between the arc-shaped gasket and the transparent cover fall into the transparent cover. After replacing the reminder paper, the replaced reminder paper is placed on both sides of the upper surface of the arc-shaped gasket and the threaded column is twisted in the opposite direction to move the arc-shaped gasket outward, so that the replaced reminder paper can be sandwiched between the arc-shaped gasket and the inner wall of the transparent cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a natural gas valve with a gas leakage prompt function proposed by the present invention;

[0016] Figure 2 This is a schematic structural diagram of a natural gas valve with a gas leakage warning function proposed by the present invention from an oblique upper perspective;

[0017] Figure 3 This is a schematic diagram of the internal structure of a natural gas valve with a gas leakage warning function proposed by the present invention;

[0018] Figure 4 This is a schematic diagram of the internal structure of a valve body in a natural gas valve with a gas leakage prompt function proposed by the present invention.

[0019] Legend:

[0020] 1. Valve body; 2. Natural gas pipeline; 3. Leakage warning assembly; 301. Fixing ring; 302. Transparent cover; 303. Positioning cylinder; 304. Threaded column; 305. Arc-shaped gasket; 306. Warning paper; 307. Connecting cap; 4. Regulating valve; 5. Ball valve; 6. Threaded ring; 7. Natural gas through hole; 8. Protective cover. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1-4 , the utility model provides two technical solutions, specifically including the following embodiments:

[0023] Example 1:

[0024] A natural gas valve with a gas leakage prompt function includes a valve body 1, the front and rear ends of the valve body 1 are threadedly connected to the natural gas pipeline 2, and the front and rear ends of the valve body 1 are connected to the two natural gas pipelines 2. The gas leakage prompt assembly 3 is provided at the connection position between the front and rear ends of the valve body 1 and the two natural gas pipelines 2. The gas leakage prompt assembly 3 includes a fixed collar 301, a transparent cover 302, a positioning cylinder 303, a threaded column 304, an arc-shaped gasket 305, a prompt paper 306 and a connecting cap 307. The outer sides of the front and rear ends of the valve body 1 are fixedly connected to a protective sleeve 8, the outer side of the protective sleeve 8 is fixedly connected to the fixed collar 301, the outer side of the fixed collar 301 is fixedly connected to the transparent cover 302, the outer side of the transparent cover 302 is fixedly connected to four positioning cylinders 303, the middle of the four positioning cylinders 303 are threadedly connected to the threaded column 304, the lower end of the threaded column 304 is rotatably connected to the arc-shaped gasket 305, and the surface of the arc-shaped gasket 305 is fitted on the inner wall of the transparent cover 302 The surface, and two reminder paper pieces 306 are provided between the two sides of the arc-shaped gasket 305 and the inner wall of the transparent cover 302. The upper end of the threaded column 304 is fixedly connected to a connecting cap 307. The four positioning cylinders 303 are distributed in a ring array on the outer surface of the valve body 1. When the reminder paper piece 306 becomes damp and needs to be replaced, the user can twist the threaded column 304 at the corresponding position of the arc-shaped gasket 305 to move the arc-shaped gasket 305 toward the center position of the transparent cover 302. At this time, the two reminder paper pieces 306 sandwiched between the arc-shaped gasket 305 and the transparent cover 302 fall into the transparent cover 302. After replacing the reminder paper piece 306, the replaced reminder paper piece 306 is placed on both sides of the upper surface of the arc-shaped gasket 305 and then the threaded column 304 is twisted in the opposite direction to move the arc-shaped gasket 305 outward, and the replaced reminder paper piece 306 can be clamped between the arc-shaped gasket 305 and the inner wall of the transparent cover 302.

[0025] During operation, when the natural gas valve is in use, if a leak occurs at the connection between the natural gas pipeline 2 and the valve body 1, the leaked natural gas is discharged through the outside of the transparent cover 302. During the natural gas discharge process, multiple reminder paper strips located in the transparent cover 302 flutter under the action of the natural gas airflow. The user can determine whether there is a natural gas leak by observing whether the reminder paper strips in the transparent cover 302 flutter. Since the fluttering of the reminder paper strips 306 is caused by the flow of leaked natural gas, this design does not require an additional power supply, simplifies the valve structure, and reduces costs. As a disposable or easily replaceable component, the reminder paper strips 306 have low maintenance costs and a simple replacement process.

[0026] Example 2:

[0027] On the basis of Example 1, a ball valve 5 is provided in the middle of the valve body 1, and a natural gas through hole 7 is opened in the middle of the ball valve 5. A regulating valve 4 is fixedly connected to the upper end of the ball valve 5, and the regulating valve 4 is rotatably connected to the upper surface of the valve body 1. The inner wall surfaces of the front and rear ends of the valve body 1 are provided with threaded rings 6. During the use of the natural gas valve, when the valve needs to be opened, the user rotates the regulating valve 4 so that the ball inside the ball valve 5 rotates accordingly, so that the natural gas through hole 7 is aligned with the natural gas pipeline 2 connected to the valve body 1, allowing natural gas to pass through. When the valve needs to be closed, the user rotates the regulating valve 4 in the opposite direction, so that the ball inside the ball valve 5 rotates, and the natural gas through hole 7 is offset from the natural gas channel, thereby cutting off the flow of natural gas.

[0028] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the application should be included in the scope of protection of the present application.

Claims

1. A natural gas valve with a gas leakage prompt function, comprising a valve body (1), characterized in that: The front and rear ends of the valve body (1) are both threadedly connected to the natural gas pipeline (2), and the front and rear ends of the valve body (1) are both provided with a gas leakage prompting assembly (3) at the connection positions with the two natural gas pipelines (2). The gas leakage prompting assembly (3) comprises a fixing collar (301), a transparent cover (302), a positioning cylinder (303), a threaded column (304), an arc-shaped gasket (305), a prompting paper (306) and a connecting cap (307). The outer sides of the front and rear ends of the valve body (1) are both fixedly connected to a protective sleeve (8), and the outer side of the protective sleeve (8) is fixedly connected to a fixing collar. (301), the outer side of the fixing ring (301) is fixedly connected to a transparent cover (302), the outer side of the transparent cover (302) is fixedly connected to four positioning cylinders (303), the middle of the four positioning cylinders (303) are all threadedly connected to a threaded column (304), the lower end of the threaded column (304) is rotatably connected to an arc-shaped gasket (305), the surface of the arc-shaped gasket (305) is arranged in contact with the inner wall surface of the transparent cover (302), and two reminder paper pieces (306) are arranged between the two sides of the arc-shaped gasket (305) and the inner wall of the transparent cover (302).

2. A natural gas valve with a gas leakage warning function according to claim 1, characterized in that: The upper end of the threaded column (304) is fixedly connected with a connecting cap (307).

3. The natural gas valve with a gas leakage warning function according to claim 1, characterized in that: A ball valve (5) is provided in the middle of the valve body (1), and a natural gas through hole (7) is provided in the middle of the ball valve (5).

4. A natural gas valve with a gas leakage warning function according to claim 3, characterized in that: The upper end of the ball valve (5) is fixedly connected to a regulating valve (4), and the regulating valve (4) is rotatably connected to the upper surface of the valve body (1).

5. The natural gas valve with a gas leakage warning function according to claim 1, characterized in that: The inner wall surfaces of the front and rear ends of the valve body (1) are both provided with threaded rings (6).

6. The natural gas valve with a gas leakage warning function according to claim 1, characterized in that: The four positioning cylinders (303) are distributed in an annular array on the outer surface of the valve body (1).

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