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Gas micro-leakage detection device and method for a sealing device

A sealing device and leakage detection technology, which is applied in the direction of fluid tightness testing, measuring devices, liquid tightness measurement using liquid/vacuum degree, etc. It can solve the problems that the test accuracy is not high enough, and the leakage value cannot be given, etc. , to achieve the effect of simple structure, easy implementation and high test accuracy

Active Publication Date: 2020-09-11
BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The method of counting bubbles and the corresponding device have the problem of insufficient test accuracy when evaluating the leakage of the sealing device. For example, different sealing devices or the same device have different sizes of bubbles under different conditions, and the number of bubbles can only give a qualitative leak status. Evaluation, but not able to give accurate leakage value

Method used

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  • Gas micro-leakage detection device and method for a sealing device
  • Gas micro-leakage detection device and method for a sealing device
  • Gas micro-leakage detection device and method for a sealing device

Examples

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Embodiment 1

[0030] Such as figure 2 As shown, a sealing device gas microleakage detection device disclosed in this embodiment includes a cavity 1 , a sealing device 2 , a vacuuming device 5 , a vacuum gauge 7 , a vacuum display 9 and a computer 14 . The vacuum gauge 7 and the vacuum display 9 adopt a microcomputer digital display composite vacuum gauge produced by Chengdu Zhenghua Electronic Instrument Co., Ltd., and the serial number is ZDF-X-LED. The cavity 1 and the sealing device 2 are connected through a connecting joint 8 , the cavity 1 and the vacuum gauge 7 are connected through a connecting joint 6 , and the cavity 1 and the vacuum equipment 5 are connected through a connecting joint 3 . The vacuum gauge 7 and the vacuum display 9 are connected by a cable 10 , and the vacuum display 9 and the computer 14 are connected by a cable 11 . There is a cut-off valve on the connecting joint 3 . The vacuum equipment 5 and the computer 14 are connected by cables 12 . The computer 14 is ...

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Abstract

The invention discloses a device and a method for evaluating the gas micro-leakage of a sealing device and belongs to the field of sealing device leakage test. The device comprises a cavity, a sealing device, vacuumizing equipment, a vacuum gauge, a vacuum display and a computer. The cavity and the sealing device are connected through a connecting joint. The cavity and the vacuum gauge are connected through another connecting joint. The cavity and the vacuumizing equipment are connected through a third connecting joint. The vacuum gauge is connected with the vacuum display through a cable. The vacuum display is connected with the computer through another cable. Each connecting joint is provided with a stop valve. The vacuumizing equipment is connected with the computer through a third cable. The computer is provided with the vacuum degree testing and analyzing software and the vacuumizing control software. The invention further discloses a gas micro-leakage evaluation method based on the gas micro-leakage evaluation device. According to the device and the method for testing and evaluating the sealing performance of the sealing device, the advantages of high test precision, high sensitivity, adjustable sensitivity and the like are realized. Meanwhile, a quantitative result can be given for the micro-leakage situation.

Description

technical field [0001] The invention relates to a gas micro-leakage detection device and method for a sealing device, in particular to a gas micro-leakage detection device and method for a sealing device applied to an aeroengine, and belongs to the field of sealing device leakage testing and evaluation methods. Background technique [0002] In the research of aeroengine sealing technology, the development and production of sealing devices, the evaluation of sealing performance is involved, especially the detection and testing of the airtight characteristics of sealing devices (such as end face sealing devices, circumferential sealing devices, etc.). Carry out the airtight characteristic detection and test work of the sealing device. The existing technology mainly adopts the method of counting air bubbles to evaluate the sealing performance. The number of air bubbles within the specified time does not exceed the agreed number. The sealing device requires the number of bubbles...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/26
CPCG01M3/025G01M3/26
Inventor 张家远王利恒顾健吴瑕安敏吕成龙庄成乾张昕苏鑫
Owner BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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