Gravity ball air-water separator

Abstract

The invention discloses a gravity ball type gas-water separator. A valve body is fixed at the lower part of a tank body, a valve body sinking hole and a flow channel are formed in the valve body, the lower section of the valve body is located at the lower part of a first step, the middle section is located between the first step and a second step, and the upper section is located at the upper part of the second step; the diameter of the lower section is greater than that of the middle section, and the diameter of the middle section is greater than that of the upper section; and the upper part of the flow channel is communicated with the tank body, the lower part of the flow channel is communicated with the middle section, the diameter of a gravity ball is 0.02-0.05mm smaller than that of the upper section, the gravity ball is placed in the upper section, a drain pipe is fixed at the lower section through screwed connection or welding, O-shaped sealing rings are placed on the upper surface of the drain pipe and at the lower part of the second step, the gravity ball is placed on the O-shaped sealing rings, and a fuel cell drain pipe of a fuel cell is communicated with a gas-water inlet. By adopting the gravity ball type gas-water separator disclosed by the invention, the hydrogen utilization ratio of the fuel cell can reach above 80%, and thus the hydrogen utilization ratio of the fuel cell can be increased, and the power supply cost of the fuel cell can be reduced.

Description

Technical field: [0001] The invention relates to the technical field of fuel cells, in particular to a gas-water separation device used in fuel cells. Background technique: [0002] See figure 1 As shown, the hydrogen of the existing fuel cell enters the flow field plate A2 from the intake pipe A1, the oxygen enters the flow field plate A2 from the oxygen diversion groove A4, and the oxygen permeates the electrolyte A3 (proton membrane catalytic layer) to perform electrochemical reaction with hydrogen Can produce a large amount of water at last, and water is discharged from drainpipe A6, and drain valve A5 is installed on the drainpipe A6. When the drain valve A5 is opened to drain water, a large amount of hydrogen is discharged from the drain pipe A6 together with the water, so the utilization rate of hydrogen in the fuel cell is low, and the utilization rate of hydrogen is generally about 50%, which causes a lot of waste of hydrogen. This increases the power supply cost ...

AI Technical Summary

Problems solved by technology

When the drain valve A5 is opened to drain water, a large amount of hydrogen is discharged from the drain pipe A6 together with the water, so the utilization rate of hydrogen in the fuel cell is low. Generally, the utilization rate of hydrogen is about 50%, which causes a lot of waste of hydrogen. Increased fuel cell power supply costs

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