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Hydrogen circulating pump oil leakage prevention device and method thereof

A technology for preventing oil leakage and circulating pumps, applied in the sealing device of piston pumps, parts of pumping devices for elastic fluids, pump components, etc., to achieve protection from damage, control manufacturing costs, and simple and easy structural improvement Effect

Active Publication Date: 2021-09-07
QINGDAO UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The hydrogen circulation pump oil leakage prevention device and method thereof according to the present invention is to solve the above-mentioned problems in the prior art by providing a seal between the gear cavity and the compression cavity, and at the same time setting a filter type pressure relief device on one side of the gear cavity , in order to prevent the lubricating oil from leaking from the gearbox to the pump chamber to pollute the hydrogen and prevent the oil from polluting the stack

Method used

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  • Hydrogen circulating pump oil leakage prevention device and method thereof
  • Hydrogen circulating pump oil leakage prevention device and method thereof

Examples

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Effect test

Embodiment 1

[0027] Example 1, such as figure 1 As shown, the application of the hydrogen circulation pump of the oil leakage prevention device described in the present application, the driving gear 4 and the driving rotor 12 are installed on the driving shaft 3, and the driven gear 6 and the driven rotor 13 are installed on the driven shaft 5;

[0028] The driving gear 4 and the driven gear 6 are located in the gear chamber 7, and there is lubricating oil in the gear chamber 7;

[0029] The driving rotor 12 and the driven rotor 13 are located in the compression chamber 14;

[0030] Hydrogen enters the compression chamber 14 from the intake pipeline 11, and is discharged from the exhaust pipe 10 after the driving rotor 12 and the driven rotor 13 rotate together, engage and compress;

[0031] Between the gear chamber 7 and the compression chamber 14, the driving shaft 3 is provided with a first seal 8, and the driven shaft 5 is provided with a second seal 9;

[0032] There is a pressure r...

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Abstract

The oil leakage prevention device and method of the hydrogen circulating pump in the present invention adopts a seal between the gear cavity and the compression cavity, and a filter type pressure relief device is set on one side of the gear cavity, in order to prevent the lubricating oil from leaking from the gear box to the The pump cavity will be polluted by hydrogen, and the problem of oil leakage polluting the electric stack will be eliminated. The anti-leakage device is included between the gear chamber and the compression chamber, the driving shaft is provided with a first seal, and the driven shaft is provided with a second seal; the intake pipe that transports hydrogen into the compression chamber communicates with the gear chamber A pressure relief pipe is provided with a solenoid valve and a filter.

Description

technical field [0001] The invention relates to an oil leakage prevention device between a gear chamber and a compression chamber and a method thereof, belonging to the technical field of hydrogen circulation pumps. Background technique [0002] At present, in the field of hydrogen fuel cell research and development and manufacturing, hydrogen circulation pumps are used as the core power equipment. The structural types of hydrogen circulation in fuel cell stacks mainly include ejectors, speed-type hydrogen circulation pumps that use speed to do work, volumetric hydrogen circulation pumps, etc. The principle of the ejector is to use the high-pressure hydrogen in the hydrogen storage bottle to eject the low-pressure, low-flow hydrogen at the outlet of the stack to form a mixed gas with a certain pressure and flow rate to re-enter the stack. The speed-type hydrogen circulation pump is mainly a centrifugal pump. This type of circulation pump has the advantages of small size and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C27/00F04C29/00
CPCF04C27/008F04C29/0092F04C2210/1055
Inventor 唐斌赵远扬刘广彬杨启超李连生
Owner QINGDAO UNIV OF SCI & TECH
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