A natural gas PE valve diffusion valve shaft protection device

Abstract

The utility model discloses a natural gas PE valve diffusion valve shaft protection device, and the protection device is cylindrical, and the space of accommodating valve shaft is formed in its inside, and the protection device still has the sealing camber matched with the outer edge of valve, is equipped with the sealing groove on the sealing camber, and the sealing ring is placed in the sealing groove, and the protection device is fixed on the valve through the clamping rope, the utility model has the beneficial effect that: through clamping rope and fix it on the valve, not only can the protection of valve, prolong its life, when the trace leakage of valve appears, still can carry out the quick leak stoppage to it, and wait for the periodical maintenance.

Description

Technical Field

[0001] This utility model relates to the field of gas valve sealing, and in particular to a protective device for the vent valve shaft of a natural gas PE valve. Background Technology

[0002] As a commonly used gas pipeline device, PE valves are typically installed in valve wells. Due to the enclosed nature of these wells, humid environments, dust, and accumulated water can easily affect the valve's operating parts, especially the valve shaft. This can lead to problems such as inability to open or close properly, and air leaks at the valve shaft and connection points. Vent valves, in particular, are prone to leakage due to the lack of any protective measures. During routine inspections, leaking valves must be replaced, but this requires shutting off the gas supply, disrupting daily life and posing a risk of gas supply interruption and restoration. Valve replacement can cost tens of thousands of yuan in valve replacement, gas loss, and labor costs, resulting in unnecessary operating expenses. Summary of the Invention

[0003] The purpose of this utility model is to provide a protection device for the vent valve shaft of a natural gas PE valve, which can provide certain protection for the PE valve vent valve in harsh working environments, and can also quickly plug leaks when a small amount of gas leaks.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A protective device for the vent valve shaft of a natural gas PE valve is provided. The protective device is cylindrical and has a space inside to accommodate the valve shaft. The protective device has a sealing arc surface that matches the outer edge of the valve. A sealing groove is provided on the sealing arc surface, and a sealing ring is placed in the sealing groove. The protective device is fixed to the valve by a snap-fit ​​rope.

[0005] Preferably, the bottom of the protective device has a receiving groove for easy passage of the hook-and-loop cable.

[0006] Preferably, the snap rope is a cable tie.

[0007] Preferably, the sealing ring is a nitrile rubber ring.

[0008] Preferably, the protective device is a PPR hot-melt pipe fitting.

[0009] The beneficial effects of this utility model are as follows: 1. By securing it to the valve with a snap-on rope, not only can the valve be protected and its service life extended, but it can also be quickly plugged when a small amount of air leakage occurs, allowing for scheduled maintenance.

[0010] 2. The cable tie is used to secure the rope to the valve quickly and reliably, making it easy to operate. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the device in its operational state; Figure 2 This is a schematic diagram of the structure of the device; Figure 3 This is the front view of the device; Figure 4 for Figure 3 AA section view; Figure 5 for Figure 3 BB cross-sectional view.

[0012] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0013] The present invention will now be further described with reference to the accompanying drawings. Example

[0014] like Figure 1 As shown in the diagram, this embodiment illustrates the use of the natural gas PE valve vent valve shaft protection device. The valve 2 is installed on the natural gas pipeline 3. The protection device 1 is installed on the outside of the valve shaft of the valve 2 and secured with a snap-fit ​​rope 4 to prevent accidental shaking.

[0015] like Figure 2 — Figure 5 As shown, this protective device 1 has a sealing arc surface 11 that matches the outer edge of valve 2, allowing it to be completely secured to valve 2. Simultaneously, the protective device 1 is cylindrical, forming a space within it to accommodate the valve shaft of valve 2. This not only protects the valve shaft but also collects leaked gas when a small amount of gas leaks from valve 2, preventing further escape and facilitating unified shutdown maintenance, thus reducing operating costs. To improve the sealing effect, a sealing groove 12 is formed on the sealing arc surface 11, and a sealing ring (not shown in the figure) is placed within the sealing groove 12. The sealing ring can be made of nitrile rubber. When this protective device 1 is installed on valve 2, the sealing ring seals the contact surface between the two, preventing the escape of internal gas and the intrusion of external debris.

[0016] The protective device 1 is fixed to the valve 2 by a snap-fit ​​rope 4. To facilitate the application of force and improve the fixing effect, a receiving groove 13 is provided at the bottom of the protective device 1, through which the snap-fit ​​rope 4 passes to prevent it from accidentally coming loose.

[0017] The snap rope 4 can use cable ties, which are inexpensive, provide reliable fixation, and are easy to install and remove.

[0018] The protective device 1 is a PPR hot-melt pipe fitting.

[0019] In use, this device is fitted over valve 2, enclosing the valve shaft, and secured with cable ties. It not only provides some protection for PE valves and vent valves in harsh working environments, but also quickly plugs leaks in the event of minor leakage.

[0020] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify 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. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0022] If the terms "first" or "second" are used in this document to define the components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing this utility model and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A protective device for the vent valve shaft of a natural gas PE valve, characterized in that, The protective device is cylindrical and has a space inside to accommodate the valve shaft. The protective device has a sealing arc surface that matches the outer edge of the valve. A sealing groove is opened on the sealing arc surface, and a sealing ring is placed in the sealing groove. The protective device is fixed to the valve by a snap-fit ​​rope.

2. The natural gas PE valve vent valve shaft protection device according to claim 1, characterized in that, The bottom of the protective device has a slot for easy access for the cable.

3. The natural gas PE valve vent valve shaft protection device according to claim 1, characterized in that, The cable tie is a type of cable tie.

4. The natural gas PE valve vent valve shaft protection device according to claim 1, characterized in that, The sealing ring is a nitrile rubber ring.

5. A natural gas PE valve vent valve shaft protection device according to claim 1, characterized in that, The protective device is a PPR hot-melt pipe fitting.

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