Hydrogen circulating pump with anti-icing structure

Abstract

The invention discloses a hydrogen circulating pump with an anti-icing structure. The hydrogen circulating pump comprises a motor, a gear chamber and a pressurizer, wherein an output shaft of the motor drives a female rotor and a male rotor in the pressurizer to rotate by means of a gear in the gear chamber to pressurize a gas, a gas inlet is formed in the end, away from the motor, of the pressurizer, and a gas outlet is formed in the bottom part of the pressurizer; a driven motor, the gear chamber and the pressurizer are sequentially arranged upwards in an inclined mode; the gas outlet is formed in the bottom part of the pressurizer, water formed by water vapor in a compression cavity can be discharged in time, accumulation of water in the compression cavity is avoided, accumulated waterin the pressurizer is fundamentally eliminated, the rotors are prevented from being frozen by water stored internally due to over-low temperature, the locked-rotor phenomenon of the motor is avoided,the motor is protected, even if a small amount of water is frozen in the compression cavity, the motor can drive the Roots rotors to rotate forwards and backwards to break the ice, and the adopted Roots rotors are thick and solic in structure and cannot be damaged in the ice breaking process.

Description

Technical field: [0001] The invention relates to a hydrogen circulation pump with an anti-freezing structure. Background technique: [0002] Fuel cells generate electrical energy through the electrochemical reaction between combustible substances (hydrogen) and oxygen in the air. After the fuel cell reacts, the exhaust gas contains a large amount of hydrogen. If these hydrogen are directly discharged into the atmosphere, on the one hand It is a waste of energy. On the other hand, it causes pollution to the environment. Third, hydrogen is flammable and explosive and will cause danger. Therefore, it is necessary to recover and reuse these hydrogens. At present, these hydrogen-containing mixed gases are generally circulated back to the fuel cell through a hydrogen circulation pump for recycling. However, ordinary hydrogen circulation pumps have the following disadvantages during operation: the hydrogen-containing mixed gas discharged from the fuel cell will contain some water...

AI Technical Summary

Problems solved by technology

[0003] In order to make up for the deficiencies of the prior art, the present invention provides a hydrogen circulation pump with an anti-freezing structure, which solves the problem of easy storage of water inside the previous hydrogen circulation pump, and avoids the freezing and freezing of internal water due to too low temperature The rotor avoids the phenomenon of motor stalling and protects the motor

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