A scroll pump for fuel cell hydrogen recirculation

A fuel cell and recirculation technology, which is applied in fuel cells, electrical components, non-variable pumps, etc., can solve the problems of unfavorable vortex flow formation and development, and blade shape that cannot well conform to the distribution law of the impeller channel. , to increase the pressure rise, promote the formation of vortex flow, and reduce the peripheral velocity

Active Publication Date: 2022-04-22
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the blade shape of the prior art cannot well conform to the distribution law of the relative velocity in the impeller channel.
The shape of the vortex section is not conducive to the formation and development of the vortex flow

Method used

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  • A scroll pump for fuel cell hydrogen recirculation
  • A scroll pump for fuel cell hydrogen recirculation
  • A scroll pump for fuel cell hydrogen recirculation

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0023] The present invention is described in further detail below in conjunction with accompanying drawing:

[0024] refer to figure 1 The vortex pump for fuel cell hydrogen recirculation according to the present invention includes an impeller 11, a pump casing and a pump shaft 14; the front pump casing 1 and the rear pump casing 2 are interlocked to form a pump casing, and the impeller 11 is arranged on the pump casing Inside, the impeller 11 includes a disc 12 and a number of vanes 13 arranged on the outer peripheral surface of the disc 12, wherein the vanes 13 are distributed sequentially along the circumferential direction, and the end of the pump shaft 14 passes through the pump casing and is connected to the middle of the disc 12. , the pump casing is provided with an annular vortex section 5, and the side of the pump casing is provided with an outlet section 6 and an inlet section 4, wherein the outlet section 6 and the inlet section 4 are connected to the vortex sectio...

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PUM

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Abstract

The invention discloses a vortex pump for hydrogen recirculation of fuel cells, comprising an impeller, a pump casing and a pump shaft; the impeller is arranged in the pump casing, and the impeller comprises a wheel disc and several blades arranged on the outer peripheral surface of the wheel disc, each The vanes are distributed in turn in the circumferential direction. The end of the pump shaft passes through the pump casing and is connected to the middle of the wheel disc. The pump casing is provided with an annular vortex section, and the side of the pump casing is provided with an outlet section and an inlet section. Among them, the outlet section The inlet section, the vortex section and the outlet section are all connected with the vortex section, and each blade is located in the vortex section. The inlet section, the vortex section and the outlet section form the pump cavity; Located between the front half ellipse and the rear half ellipse, the pump has the characteristics of fast formation of vortex flow.

Description

technical field [0001] The invention belongs to the technical field of fuel cell systems, and relates to a vortex pump for fuel cell hydrogen recirculation. Background technique [0002] In the proton exchange membrane fuel cell system, the hydrogen recirculation pump can significantly improve the hydrogen utilization rate; send the water vapor from the anode outlet to the inlet to help the battery humidify; promote the anode gas circulation and prevent the anode nitrogen or water droplets from accumulating; when the battery system is closed During the process, the anode hydrogen is replaced. The hydrogen recirculation pump is a key component in controlling the flow of the anode medium. Scroll pumps are free from stall and surge, are compact and have high pressure rise, making them ideal for applications where installation space is extremely limited. It is an optimal solution for the hydrogen recirculation pump of the vehicle hydrogen fuel cell system. However, the aerody...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D17/16F04D29/42F04D29/28F04D29/30F04D29/66H01M8/04089
CPCF04D17/16F04D29/4206F04D29/28F04D29/30F04D29/667H01M8/04097Y02E60/50
Inventor 孙金菊杨焘宋鹏孙万有
Owner XI AN JIAOTONG UNIV
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