Liquid hydrogen loading and unloading truck arm

Abstract

The invention relates to the technical field of ultralow-temperature fluid loading and unloading, in particular to a liquid hydrogen loading and unloading truck arm. The liquid hydrogen loading and unloading truck arm comprises a stand column, an inlet pipe, an inner arm body, a liquid phase outer arm body, a spring steel balance system, a first connecting pipe, a second connecting pipe, a vertical pipe, a gas phase outer arm body, a third connecting pipe and a screw thread high vacuum valve. According to the liquid hydrogen loading and unloading truck arm, the inlet pipe, the inner arm body, the liquid phase outer arm body, the vertical pipe and the gas phase outer arm body are connected through rotating joints, the structure is adjustable, the adjusting range is larger, and the application range is wider; by adopting the jacket structure design, heat transfer can be reduced, and surrounding air is prevented from being condensed into liquid oxygen and liquid nitrogen; hoses replaced by the hard connecting pipes, so that damage is not easily caused during use, accidental leakage of a medium is not easily generated, and the safety is greatly improved; and through mutual cooperation of the stand column and the spring steel balance system, the stability and balance of the liquid hydrogen loading and unloading truck arm can be guaranteed, time and labor are saved, and single-operator truck connection operation is facilitated.

Description

technical field [0001] The invention relates to the technical field of ultra-low temperature fluid loading and unloading, in particular to a liquid hydrogen loading and unloading truck arm. Background technique [0002] With the rapid development of the domestic hydrogen energy industry, domestic liquid hydrogen projects have increased rapidly. In 2020 alone, dozens of liquid hydrogen projects and policies have been implemented. The liquid hydrogen industry has entered a stage of rapid development. [0003] Due to the low density of hydrogen, under the technical background of large-scale pipeline hydrogen transportation, liquefying hydrogen to increase storage and transportation density is the most direct and effective transportation method. Compared with high-pressure storage and transportation, liquid hydrogen storage and transportation has the advantages of low transportation cost, high hydrogen purity, and convenient measurement, and is more suitable for large-scale depl...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is: in order to solve the problems existing in the above-mentioned background technology, an improved liquid hydrogen loading and unloading arm is provided to solve the problem that the existing liquid hydrogen adopts a vacuum hose for receiving the vehicle, and the quality of the tube body is heavy. Inconvenient, one person cannot pick up the car; the existing vacuum hose for picking up the car has a short service life; the hose is easily damaged during use, and it is not easy to find, accidental leakage of the medium, and there are potential safety hazards

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