Ultrahigh pressure cylinder valve of hydrogen energy vehicle

Abstract

The invention discloses an ultrahigh pressure cylinder valve of a hydrogen energy vehicle. The ultrahigh pressure cylinder valve of the hydrogen energy vehicle comprises a valve body, and a double-valve-port pressure reducing valve, a balance valve composed of a throttling valve and a flow and pressure stabilizing valve, an electromagnetic valve, a one-way inflation valve, an overpressure safety valve, an overheat safety valve, a deflation valve, an inflation port filter element, an air outlet filter element, a temperature sensor, an in-cylinder air pressure and output pressure sensor interface and the like are arranged in the valve body. All the parts are arranged in the valve body according to design requirements and communicate through corresponding channels in the valve body, and the characteristics of being high in integration degree, safety and monitoring performance are achieved; the output pressure can be adjusted according to the requirements of a fuel cell, the fluctuation of the output pressure and the flow is greatly reduced, and the requirements of the fuel cell are met; when a hydrogen storage bottle is overpressure and overtemperature, the corresponding safety valve acts to release high-pressure hydrogen in the bottle to relieve pressure, so that overpressure explosion is avoided; and the air pressure, the air temperature and the output pressure in the bottle can be monitored at any time.

Description

Technical field [0001] The present invention relates to the field of valve, and more particularly to a hydrogen energy vehicle ultra-high pressure bottle valve. Background technique [0002] Since the hydrogen energy fuel cell car is completely free, the inflation time is short, the renewal mileage is long, and with the improvement of hydrogen production technology, the hydrogen cost will be greatly reduced, so it is highly valued by the major economies of the world. Therefore, strict requirements are made for fuel cells, hydrogen storage bottles and bottle valves. For the bottle valve, due to the special requirements of ultra high pressure (70 MPa), the cylinder valve is a combination valve having a high functional integration, high monitoring and high security. At present, various types of bottles and valves that are being used at home and abroad have basically reached the above requirements, but in the performance and functional integration, there is still a further increase, ...

AI Technical Summary

Problems solved by technology

Although the various types of bottle valves currently in use at home and abroad basically meet the above requirements, they still need to be further improved in terms of performance and functional integration. It can withstand lower pressure, so the valve needs to be decompressed by the decompression valve, which not only increases the trouble on the connection and the leakage point, but also because the pressure in the bottle varies widely, generally 70MPa-5MPa, so after decompression The output pressure fluctuates greatly; in addition, there is no steady flow device in the bottle valve, so the output flow fluctuates greatly, and the fuel cell hopes to provide relatively stable pressure and flow

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