Gas decompression device

Abstract

The invention discloses a gas decompression device which is composed of a flow meter. The flow meter comprises a transparent outer pipe and a transparent inner pipe arranged in the transparent outer pipe. The top end of the transparent inner pipe is provided with an opening, the top end of the transparent outer pipe is a top wall, the top wall and the transparent outer pipe are combined into a whole, a buffering pad is arranged between the transparent inner pipe and the top wall, and the top wall is provided with a thin area. By means of the gas decompression device, when gas pressure in the flow meter exceeds the maximum pressure capable of being borne by the flow meter, the situation that the flow meter explodes and accordingly fragments scatter around can be avoided, and the flow meter can bear high pressure.

Description

technical field [0001] The invention relates to a gas decompression device. Background technique [0002] Since the gas pressure in the gas cylinder is relatively high, but the gas pressure required for gas welding and gas cutting is relatively small, it is necessary to use a gas decompression device to reduce the high-pressure gas stored in the gas cylinder to low-pressure gas, and it should be guaranteed The required operating pressure remains constant. In short, the gas decompression device is a regulating device that reduces high-pressure gas to low-pressure gas and keeps the pressure and flow of the output gas stable. [0003] The current gas decompression device generally includes an air inlet joint, a main body and an air outlet joint. The main body is provided with a pressure reducing valve and a flow meter. The final gas is input through the gas outlet joint after passing through the flowmeter. [0004] In the current gas decompression device, once the decompress...

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Problems solved by technology

[0004] In the current gas decompression device, once the decompression valve fails, high-pressure gas will directly enter the flowmeter. Once the air pressure in the flowmeter exceeds the maximum pressure that the flowmeter can withstand, the flowmeter will explode and the flowmeter will explode. The fragments generated when flying around will cause damage to the surrounding staff and machinery and equipment.

[0005] Moreover, in the current devices for decompressing gas, the flowmeter is generally made of plastic, which has low strength and can withstand low pressure.

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