Dilution device for fuel battery passenger car discharging hydrogen concentration

Abstract

The invention relates a concentration diluting device used for hydrogen discharged by a fuel cell passenger car, pertaining to the field of application technology of the fuel cell passenger car; the device comprises a photoelectric receiver, a photoelectric proximity switch, an electric fan, two static-free meshes, a hydrogen piping, a main body of the diluting device, a plurality of baffle plates, an electromagnetic valve and a fault detector of the electric fan. The main body of the diluting device is a body case with an opening on both ends; the two static-free meshes are connected with the inner walls on the both ends of the main body of the diluting device; the photoelectric receiver is arranged on the central shaft of the motor of the electric fan; the photoelectric proximity switch is arranged on the body case of the electric fan and connected with the fault detector of the electric fan; the hydrogen piping is communicated with the hydrogen inlet of the air inlet end of the main body of the diluting device and connected with a discharged hydrogen pipe by the electromagnetic valve. Under various working conditions of the passenger car, the device is capable of reducing the concentration of Purge to the safety level and has the advantages of small volume, compact structure, safety and reliability.

Description

technical field [0001] The invention belongs to the technical field of application of fuel cell buses, in particular to hydrogen concentration dilution technology discharged from fuel cell buses. Background technique [0002] At present, with the rapid development of fuel cell bus technology, the safety of fuel cell bus hydrogen supply system has attracted more and more attention. When hydrogen and air undergo a chemical reaction in the fuel cell, the phenomenon of discharging unreacted hydrogen to the atmosphere is called purge. If 100% Purge Hydrogen encounters static electricity or sparks, it may burn or even explode. During driving, hydrogen and air rub against each other at high speed, so static electricity will be generated. Japan's fuel cell vehicle Purge dilution device is mainly a combustion chamber, which reduces the concentration of hydrogen by burning hydrogen in the combustion chamber. However, if air enters the combustion chamber, it is prone to explosion, so...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, solve the technical problem of Purge concentration reduction, and propose a new concentration dilution device for hydrogen discharged from fuel cell passenger cars. This device can be used in various passenger cars. It can reduce the Purge concentration to a safe level under working conditions, and is small in size, compact in structure, safe and reliable, and has high application value in improving the safety of fuel cell buses

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