Leak detection test bed

A technology of leak detection test and test bench, which is applied in the field of detection test bench, can solve the problems of loose leak detection conditions and inaccurate detection data, and achieve the effect of perfect function, convenient operation and stable performance

Inactive Publication Date: 2014-08-27
SHENYANG AEROSPACE XINGUANG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a kind of internal pressure and external vacuum according to the user’s strict re

Method used

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Examples

Experimental program
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Embodiment 1

[0026] Such as Figure 1-5 As shown, the test bench includes two parts: the inflation pipeline and the vacuum working chamber; the inflation pipeline part, the inflation pipeline communicates with the gas storage bottle 13 through the filter 21, the high-pressure safety valve 17, and the manual shut-off valve 4; the gas storage The helium in the bottle passes through the decompression valve 19, the low-pressure safety valve 22, and connects the hose 3 through the inflation pipeline nozzle 5. The hose 3 communicates with the steel pipe of the component under test. connected to the helium mass spectrometer leak detector 23; the gas cylinder 13 is connected to the air inlet of the pressure reducing valve and then connected to the low-pressure pipeline through the outlet of the pressure reducing valve, and a low-pressure pressure gauge 6 and a high-pressure pressure gauge 7 are installed on the low-pressure pipeline The high pressure gauge 7 and the low pressure gauge 6 are respec...

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Abstract

The invention relates to an internal-pressurized and external-vacuum leak detection test bed. An air inflation pipeline in the test bed is communicated with an air storage bottle through a filter, a high pressure safety valve and a stop valve. The air storage bottle is communicated with a cavity of a detected assembly through a reducing valve and a low-pressure safety valve. The detected assembly is arranged in a vacuum working room which is connected with a helium mass spectrometer leak detector. The air inflation pipeline is connected with a pressure gauge. The leak detection test bed has the advantages of being accurate in leak detection data, multifunctional, stable in performance, convenient to operate and control, capable of achieving energy conservation and environment protection, safe, reliable and the like. The leak detection test bed and the helium mass spectrometer leak detector are connected to form an internal-pressurized and external-vacuum leak detection system.

Description

technical field [0001] The invention relates to a detection test bench, in particular to a leak detection test bench for detecting the leakage rate of a product when the inside of the product needs to be pressurized and the outside is in a vacuum state, and belongs to the field of gas circuit and vacuum. Background technique [0002] In the production process of a product, the key components of the product are subjected to several performance tests on the welding quality after welding, among which the leakage rate (value) of the component is a very important indicator, and this process is determined as a mandatory inspection point. [0003] At present, there is no special process equipment for leak detection on the market when the internal pressure is required and the external is in a vacuum state. In the prior art, the detection of the comprehensive leakage rate of similar products mostly adopts the "bell jar method", that is, the cavity of the product to be detected is p...

Claims

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Application Information

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IPC IPC(8): G01M3/20
Inventor 马国成商占文
Owner SHENYANG AEROSPACE XINGUANG GRP
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