A hydrogen filling device with gas leak detection function

Abstract

The invention provides a hydrogen filling device with a gas leakage detection function, which includes a hydrogenation joint and a gas receiving joint, the hydrogenation joint includes a hydrogenation pipe, the gas receiving joint includes a hydrogenation pipe, the hydrogenation pipe is connected with a hydrogenation machine, and the hydrogenation joint includes a hydrogenation pipe. The hydrogen tube communicates with the hydrogen storage tank of the hydrogen energy vehicle, and the hydrogenation joint is used to airtightly connect with the gas receiving joint, so that the hydrogenation machine can refuel the hydrogen storage tank of the hydrogen energy vehicle. The beneficial effects of the present invention are: the hydrogenation pipe of the hydrogenation joint is provided with a sliding sleeve, a first elastic member and an annular clamping block, and the first elastic member can push the sliding sleeve to clamp the clamping block on the hydrogen receiving pipe on the sliding sleeve. between the sleeves to prevent the hydrogen receiving tube from falling off from the hydrogenation joint; one end of the sliding sleeve is trumpet-shaped, and the end of the hydrogen receiving tube is tapered. The hydrogen receiving tube can be embedded in the end of the sliding sleeve, so that the sliding sleeve and the receiving The hydrogenation pipe is airtightly connected to prevent hydrogen leakage; the hydrogenation pipe of the hydrogenation joint is also equipped with a sealing sleeve, which can play a role of secondary sealing and alarm for the hydrogenation joint and the gas receiving joint.

Description

technical field [0001] The invention relates to the field of hydrogen filling devices, in particular to a hydrogen filling device with a leak detection function. Background technique [0002] Hydrogen vehicles need to use a hydrogen filling device in the process of filling hydrogen. The hydrogen filling device usually includes two connection joints. The two connection joints are respectively set on the hydrogenation machine and the hydrogen vehicle. After the two connecting joints are airtightly connected, the gas dispenser will fill the hydrogen storage system of the fuel cell of the hydrogen energy vehicle with hydrogen. Since the hydrogen gas is in a compressed state during the hydrogen filling process, the two connection joints of the hydrogen filling device need to ensure the airtightness of the connection between the two. Therefore, the connection joints of the existing hydrogen filling devices mostly adopt the method of threaded connection. , this will cause the prob...

AI Technical Summary

Problems solved by technology

Since the hydrogen gas is in a compressed state during the hydrogen filling process, the two connecting joints of the hydrogen filling device need to ensure the airtightness of the two connections. Therefore, the connecting joints of the existing hydrogen filling devices mostly adopt the method of threaded connection. , this will cause the problem of difficulty in connecting the joints during the hydrogen filling process, and the existing hydrogen filling device cannot detect the hydrogen leakage during the intake filling, and cannot find the leakage in the hydrogen filling process in time Phenomenon, when the gas leakage between the connectors cannot be found in time, it will cause the problem of hydrogen leakage and waste, and may even lead to an explosion

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