Gas ball valve capable of shutting down automatically under overpressure or overcurrent condition

Abstract

A gas ball valve capable of shutting down automatically under the overpressure or overcurrent condition comprises a main valve body provided with an air inlet and an air outlet which are communicated with each other, wherein a spherical switch is arranged in the inner cavity of the main valve body and is sealed through two sealing gaskets arranged in the inner cavity of the main valve body and located at the air inlet end of the spherical switch and at the air outlet end of the spherical switch respectively, an automatic air controlling device is arranged in an air duct of the spherical switch, an internal thread air inlet connector is in threaded connection with the air inlet side of the main valve body, and a switch rotating structure used for controlling the rotation of the spherical switch and connected with the spherical switch inside the main valve body is arranged at the upper end of the outer side of the main valve body. The gas ball valve capable of shutting down automatically under the overpressure or overcurrent condition is simple in structure, reliable and durable, has dual functions, and can effectively prevent gas leakage.

Description

technical field [0001] The invention relates to a gas pipeline valve. In particular, it relates to a manual and automatic overpressure and overcurrent automatic shut-off gas ball valve capable of preventing gas leakage. Background technique [0002] As a clean and environmentally friendly energy source, combustible gas is a fuel for industrial and agricultural production and residents' lives. In the process of use, disasters such as poisoning, fire and explosion caused by gas leakage occur from time to time, and the prevention of gas leakage has become a worldwide research topic. [0003] People have carried out long-term exploration for this reason, and proposed various technical solutions. Chinese utility model patent ZL00234322.3 provides a gas safety hose, including a hose, at least one end of the hose is connected with a safety valve to form a hose assembly, and an inline air passage is formed in the assembly; The outer wall is covered with a protective layer. The p...

AI Technical Summary

Problems solved by technology

Since the gas outlet nozzle must be pushed to start the automatic control device, there is still the problem of gas leakage caused by external force motion friction, and there are still unsafe factors

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