A gas bottle valve

Abstract

The invention relates to a fuel gas cylinder valve. The fuel gas cylinder valve comprises a valve body, wherein the valve body is provided with a gas connection passage and a gas port communicated with the outer side of the valve body, the gas connection passage is communicated with or closes off the gas port trough a switch valve, an automatic pressure relief device is installed on the valve body, the automatic pressure relief device comprises a pressure relief passage arranged on the valve body and a pressure relief port which is arranged on the valve body and can be communicated with the outer side of the valve body, the inner surface of the pressure relief port is arranged in a step mode, the inner diameter of the inside of the pressure relief port is smaller than the inner diameter of the outside of the pressure relief port, the inside of the pressure relief port is sealed and provided with a movable block in a sliding mode, a spring seat is arranged outside the pressure relief port, a pressure relief spring is connected between the movable block and the spring seat, the upper end of the pressure relief passage is communicated with or closes off the pressure relief port through the movable block, the lower end of the pressure relief passage is connected with a pressure relief pipe extending out of the inner side of the valve body, and a horn-shaped opening is arranged at the end of the pressure relief pipe. The fuel gas cylinder valve can achieve automatic and rapid pressure relief through the automatic pressure relief device, guarantees stability of the air pressure inside a fuel gas cylinder, and guarantees safety.

Description

technical field [0001] The invention relates to a gas cylinder valve. Background technique [0002] A gas bottle valve is installed on the gas bottle, and by opening the valve, the gas in the gas bottle is released for use, or the gas is injected into the gas bottle. When the gas is injected or the gas bottle is abnormal, the air pressure in the gas bottle may be too high. At this time, if the air pressure is not released in time, there will be a danger of explosion. In the prior art, many manual pressure relief is adopted, so if the air pressure is misjudged, the pressure cannot be released in time, and it may also cause time delay in an emergency, and the pressure relief speed in the prior art is not fast enough. Contents of the invention [0003] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a gas bottle valve capable of automatic and rapid pressure relief. [0004] The technical scheme that the present inventio...

AI Technical Summary

Problems solved by technology

When the gas is injected or the gas bottle is abnormal, it may cause the air pressure in the gas bottle to be too high. At this time, if the air pressure is not released in time, there will be a danger of explosion

In the prior art, many of them use manual pressure relief, so if the air pressure is misjudged, the pressure cannot be released in time, and it may also cause time delays in emergency situations, and the pressure relief speed in the prior art is not fast enough

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