Straight pull type pipeline gas self-closing valve

A gas self-closing valve, straight-pull technology, applied in the direction of valve details, valve devices, functional valve types, etc., can solve the problems of endangering the life and property safety of users and the failure of self-closing valves to work, so as to ensure the safety of life and property, reduce Effects of gas leakage and less environmental disturbance

CN113775802APending Publication Date: 2021-12-10HEBEI ZEHONG ELECTRONICS TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2021-12-10

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Abstract

The invention relates to a straight pull type pipeline fuel gas self-closing valve. The straight pull type pipeline fuel gas self-closing valve comprises a valve body and a valve cover, wherein a gas inlet end and a gas outlet end are arranged on the valve body, an opening matching with the valve cover is perpendicularly formed in the top of the valve body, a leather film is arranged between the opening position of the valve body and the valve cover in a pressing mode, and the straight pull type pipeline fuel gas self-closing valve further comprises a ventilation opening which is formed inside the valve body and located under the opening, a flow limiting valve, a first iron sheet, a second iron sheet and a magnet, wherein the flow limiting valve is located between the air inlet end and the ventilation opening, the first iron sheet is fixed to the inner wall of the valve body, a vent hole is formed in the first iron sheet, a stand column used for blocking the ventilation opening is arranged on the first iron sheet in a sliding and penetrating mode, a lifting rod is arranged on the valve cover in a sliding mode, a leather film is located between the second iron sheet and the valve cover, and the magnet attracts the first iron sheet to enable the stand column to block the ventilation opening. According to the straight pull type pipeline gas self-closing valve, overpressure self-closing, underpressure self-closing and overcurrent self-closing can be completed, the self-closing valve does not need electric control, the structure is simple, the sensitivity is high, and the safety when a user uses fuel gas is greatly improved.
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Description

technical field

[0001] The invention relates to the field of gas pipeline self-closing valves, in particular to a straight-pull pipeline gas self-closing valve. Background technique

[0002] With the advancement of science and technology, and in order to reduce carbon emissions, natural gas has gradually entered thousands of households. In the process of natural gas transmission, high-pressure transmission is mainly used. After natural gas is transported to end users, the pressure of natural gas pipelines is too high or Too small will affect the safety of natural gas use. In order to make residents use natural gas better and reduce the risk of using natural gas, it is necessary to limit the pipeline pressure of natural gas within a certain range, and at the same time, it is necessary to limit the flow in the natural gas pipeline .

[0003] At present, when limiting the pressure and flow of gas pipelines, self-closing valves are usually used. There are many types of self-clo...

Examples

Embodiment Construction

[0030] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

[0031] Such as figure 1 and figure 2 As shown, the self-closing valve includes a valve body 11 and a bonnet 12 assembled with the valve body 11. The two ends of the valve body 11 are respectively provided with an air inlet and an air outlet. other pipes. The top of the valve body 11 is provided with an opening for fitting with the valve cover 12. The valve cover ...