Ultrahigh pressure hydrogen storage tank

Abstract

The invention provides an ultrahigh pressure hydrogen storage tank which comprises a tank body, a sealing cover and a high strength sealing nozzle. The high strength sealing nozzle is arranged on thetank body, the sealing cover is hermetically connected to the high strength sealing nozzle, the integrally formed high strength sealing nozzle is arranged at two ends or one end of the tank body whilea seal is arranged at the other end; the high strength sealing nozzle comprises a neck part, a thickened part and a protruding part. The protruding part is located on end part of the neck body, and the thickened part is located on the periphery of the neck part. By integrally arranging the high strength sealing nozzle and the tank body, the structural strength of the tank body is improved effectively. The situation that the tank body cracks to leak gas as a result of hydrogen embrittlement on the neck part of the tank body when the storage tank stores hydrogen is avoided. By arranging the high strength sealing nozzle, the air impermeability of the tank body is improved effectively, and meanwhile, the connecting strength of the tank body and the external connecting part is also improved, and the safety of the tank body is improved effectively.

Description

technical field [0001] The invention relates to hydrogen energy storage equipment, in particular to an ultra-high pressure hydrogen storage tank. Background technique [0002] New energy vehicles refer to the use of unconventional vehicle fuels as power sources (or the use of conventional vehicle fuels, the use of new vehicle power devices), integrated vehicle power control and advanced technology in driving, the formation of advanced technical principles, with Automobiles with new technology and new structure. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, hydrogen-powered vehicles, and other new energy vehicles. [0003] As an energy source, hydrogen has incomparable advantages: the combustion calorific value of hydrogen is high, and the energy per kilogram of hydrogen combustion is about 3 times that of gasoline, 3.9 times that of alcohol, and 4.5 times that of coke; the product...

AI Technical Summary

Problems solved by technology

Hydrogen (especially high-pressure hydrogen) canned hydrogen storage has fast filling and discharge rates, low basic energy consumption, and high economical storage tank manufacturing. It is one of the effective ways to store hydrogen. Air leakage and unsatisfactory sealing effect and short service life, especially serious air leakage at the welding part of the tank body or the sealing cover, may lead to the failure of the hydrogen storage tank. In addition, the flammable and explosive characteristics of hydrogen are very easy to cause fire, Explosion or even a major disaster; the pressure of conventional gas storage tanks is generally below 40 MPa. Therefore, hydrogen storage, especially high-pressure hydrogen storage, has high requirements for storage tank design, and the risk of gas leakage in storage tanks has become a limit to the development of high-pressure hydrogen storage tanks. one of the main bottlenecks of

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