Constant pressure high-pressure gas decompression system

Abstract

The invention discloses a constant pressure high-pressure gas decompression system. The outlet of a high-pressure gas storage tank is connected with a fourth pressure sensor and a gas inlet of a gas switch valve; a gas outlet of the gas switch valve is connected with a gas inlet of a first level decompression system by a gas guide pipe; the gas outlet of the first level decompression system is connected with the gas inlet of a second level decompression system by a gas guide pipe; the outlet of the second level decompression system is connected with the gas inlet of a third level decompression system by a gas guide pipe; the gas outlet of the third level decompression system is connected with a gas guide pipe as the gas outlet of decompressed gas; a controller is respectively connected with the fourth pressure sensor and the first, second and third decompression systems. By using the fixed pressure high-pressure gas decompression system, high-pressure gas can be decompressed, the energy loss of the gas in the decompression process is effectively reduced while the stable pressure of the decompressed gas is ensured, the energy use rate of the gas is improved, and the gas internal energy can be increased by the heat exchange with the external environment in the decompression process.

Description

technical field [0001] The invention relates to the field of a low-loss high-pressure gas decompression system, in particular to a constant-pressure high-pressure gas decompression system, which decompresses the high-pressure gas stored in a pneumatic vehicle. Background technique [0002] The fossil energy used by traditional automobiles will be exhausted in the near future, and more and more new energy-powered vehicles have entered people's field of vision. As one of the new energy vehicles, the pneumatic vehicle uses high-pressure gas as the power source, and the pressure of the stored high-pressure gas is as high as tens of megapascals. In the process of use, the stored high-pressure gas must first be decompressed. [0003] The usual decompression method for high-pressure gas is throttling and decompression, so that high-pressure gas passes through small holes or slits to reduce the gas pressure by increasing the friction of the gas. Throttling and decompression is easy ...

AI Technical Summary

Problems solved by technology

[0003] The usual decompression method for high-pressure gas is throttling and decompression, so that high-pressure gas passes through small holes or slits to reduce the gas pressure by increasing the friction of the gas. Throttling and decompression is easy to achieve, but it will bring irreversible energy loss

Chinese patent CN101201127A proposes a two-stage gas decompression device, which is adjusted by feedback to ensure the stability of the outlet air pressure, but it still uses a throttling method to reduce the gas pressure, resulting in gas energy loss and reducing the energy consumption of the system. utilization rate

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