Protective valve of gas pipeline terminal

Abstract

The invention relates to the field of valves, and particularly discloses a protective valve of a gas pipeline terminal. The protective valve comprises a valve body and pipeline joints integrally connected to the two ends of the valve body, wherein the outer wall of each pipeline joint is sleeved with an outer ring plate; the end, away from the valve body, of each outer ring plate is connected with a sealing sleeve; a lantern ring is installed at the other end of each sealing sleeve; and a gas leakage alarm is further installed on the outer wall of each sealing sleeve. According to the protective valve, first plugging sleeves and second plugging sleeves are all opened by a pipeline, and the first plugging sleeves and the second plugging sleeves can perform double sealing on the joints of the pipeline joints and a home-entry pipeline or an internal pipeline, so that the joints are not prone to gas leakage; and even if leakage occurs, gas can only stay in the sealing sleeves and cannot drift outwards, it is guaranteed that the gas cannot leak at the installation position of the valve body, and the safety of the valve body in the using process is improved.

Description

technical field [0001] The invention relates to a valve, in particular to a protective valve for a gas pipeline terminal, which belongs to the field of valves. Background technique [0002] The gas valve is a new type of safety supporting device for gas pipeline engineering. It is used to cut off, connect and adjust the gas in the pipeline, and has good control characteristics and closing and sealing performance. Applicable to city gas, liquefied petroleum gas, natural gas, oxygen and other gas medium pipelines. [0003] In order to make the use of the gas kitchen safer, a gas valve is installed at the end of the gas pipeline in the kitchen to open and close the gas pipeline, thereby ensuring the safety of the gas in use. The existing gas valve does not have self-protection ability after leakage occurs in use, and cannot send an alarm signal in time, and the user cannot find it in time, which may easily cause accidents. After a leakage occurs, the gas is easy to accumulat...

AI Technical Summary

Problems solved by technology

The existing gas valve does not have self-protection ability after leakage occurs in use, and cannot send out an alarm signal in time, and the user cannot find it in time, which may easily cause accidents

After a leak occurs, the gas is easy to accumulate, and the gas exchange cannot be performed in time, so the concentration of the gas is reduced, and gas leakage accidents are prone to occur

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