Cooling-type gas-liquid separator

Abstract

The application provides a cooling-type gas-liquid separator. The cooling-type gas-liquid separator comprises an inner barrel and a gas guide tube arranged in the inner barrel; the upper end of the inner barrel is provided with a barrel cover; the upper end part of the gas guide tube is hermetically connected with the lower surface of the barrel cover; an opening is formed in the lower end of thegas guide tube; the outer wall of the gas guide tube is provided with at least one screw panel; the edge of the inner side of the at least one screw panel is fixed onto the outer wall of the gas guidetube; the edge of the outer side of the at least one screw panel is hermetically connected with the inner wall of the inner barrel; an overflow outlet is formed in the barrel cover; and the overflowoutlet communicates with the gas guide tube. Compared with the prior art, the cooling-type gas-liquid separator provided by the application is simple in structure, is capable of overcoming the abuse that a common gas-liquid separator is incapable of separating gas from liquid thoroughly, can reach more than 95% in separating efficiency, is capable of solving the problem of secondary condensation of a gas-liquid mixture in the hydrogen circulation loop of a fuel cell system, and is capable of improving the overall performance of a fuel cell.

Description

technical field [0001] The present application relates to a cooled gas-liquid separator. Background technique [0002] Proton exchange membrane fuel cells usually supply excess hydrogen during operation. In order to improve fuel utilization, a hydrogen circulation system needs to be installed to recover excess hydrogen. When the hydrogen gas is discharged from the stack after the electrochemical reaction, it will carry a certain amount of moisture (including liquid water and water vapor). If the water cannot be discharged from the system in time, the flow resistance of hydrogen in the circulation pipeline will be increased, the recovery rate of hydrogen will be reduced, and the overall output performance of the fuel cell will be affected. In addition, when the proton exchange membrane fuel cell operates in a low temperature environment, the accumulated water in the pipeline is likely to freeze, which will further aggravate the cold start problem of the fuel cell system, so ...

AI Technical Summary

Problems solved by technology

If only the liquid droplets are separated, the water vapor carried in the mixture may undergo secondary condensation due to environmental changes after passing through the gas-liquid separator, which will still affect the normal operation of the fuel cell system

Therefore, ordinary gas-liquid separators are not suitable for the separation of anode products in fuel cell systems

Images