A device for depressurizing gas

Abstract

The invention discloses a device for reducing pressure of gas. The device comprises a flowmeter. The flowmter comprises an outer transparent pipe and an inner transparent pipe arranged in the outer transparent pipe. An opening is formed in the top end of the inner transparent pipe, a top wall integrated with the outer transparent pipe is arranged at the top end of the outer transparent pipe, a buffer mat is arranged between the inner transparent pipe and the top wall, and a thin area is arranged on the top wall. By means of the device, when gas pressure in the flowmeter exceeds the maximum pressure capable of being borne by the flowmeter, the situation that the flowmeter explodes, and consequently fragments fly all around can be avoided, and the pressure capable of being borne by the flowmeter is high.

Description

technical field [0001] The invention relates to a device for depressurizing a gas. 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 device used to decompress gas is a regulating device that reduces high-pressure gas to low-pressure gas and keeps the pressure and flow of output gas stable. [0003] The current device for decompressing gas 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. Decompression, the decompressed gas passes through the flowmeter and is input through the gas outlet joint. [0004] The current device for decomp...

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Problems solved by technology

[0004] The current device for decompressing gas, 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 Explosion, the fragments generated when the flowmeter explodes are scattered around, which 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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