Sealing structure of hydrogen circulating pump of fuel cell

• Main Authors: LI HOULIANG, FAN LI, JIANG QIAN, DING WEIWEI, DAI CHANGJU, ZHANG YIZHENG, SHI FAJIA
• Format: Patent
• Language: Chinese; English
• Published: 06.06.2023
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; ELECTRICITY; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The invention belongs to a sealing structure of a hydrogen circulating pump of a fuel cell in the technical field of hydrogen fuel automobile parts. The moving ring (10) is mounted on the shaft sleeve (12) in an interference fit manner, and a moving ring end face (17) is attached to the shaft sleeve (12); the shaft sleeve (12) is installed on a motor rotor shaft (7) in an interference fit mode, the surface of the movable ring (10) or the surface of the static ring (11) is provided with a plurality of concave rotating grooves (a) and a plurality of sealing faces (b), and each rotating groove (a) is located between every two adjacent sealing faces (b). According to the sealing structure of the hydrogen circulating pump of the fuel cell, the problem that the interiors of a bearing and a motor are rusted and damaged due to the fact that mixed gas enters the interior of the bearing and the interior of the motor when sealing between a gas cavity and the motor is poor can be effectively solved, and sealing of all le