Device and method for evaluating gas micro-leakage of sealing device

A technology of sealing device and evaluation method, which is applied in the direction of measuring device, testing of fluid tightness, and measuring the rate of increase and deceleration of fluid, etc. It can solve the problems of insufficient test accuracy and the inability to give leakage value, etc., and achieve structural Simple, easy-to-implement, sensitivity-adjustable effects
CN107340101AActive Publication Date: 2017-11-10BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
Publication Date
2017-11-10

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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.
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Description

technical field

[0001] The invention relates to a gas micro-leakage evaluation device and method of a sealing device, in particular to a gas micro-leakage evaluation device and method of 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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