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VACUUM ›› 2018, Vol. 55 ›› Issue (6): 19-23.doi: 10.13385/j.cnki.vacuum.2018.06.05

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Mechanism research of double seal leakage in single-O-ring seal structure

GUO Chong-wu, SUN Li-chen, SUN Li-zhi, QI Fei-fei, LI Wen-bin   

  1. Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China
  • Received:2018-01-16 Online:2018-11-25 Published:2018-12-09

Abstract: During the vacuum leak detection testing of standalone product for single-O-Ring seal model, the leakage rate curve demonstrates continuous and tardy up-trend. Moreover, sharp corner phenomenon appears that is similar to the typical doubledeck elastic seal. It is essential to thoroughly study this issue for subsequent leak detection, as this issue has impact on the reliability of testing results. In this paper, the reason was located theoretically, by establishing the mathematical model to simulate the leakage process of double seal structure. Besides, the working sets has been designed and the experimental results were analyzed adequately. These researches may have guiding significance for the leak detection testing in the future.

Key words: leak testing, vacuum, single-O-ring seal model, double-deck elastic seal

CLC Number: 

  • TB774
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[2] ZHOU Bin-bin, ZHANG jian, HE Jian-feng, DONG Chang-kun. Carbon nanotube field emission cathode based on direct growth technique[J]. VACUUM, 2018, 55(5): 10 -14 .
[3] LI Zhi-sheng. Development of ultra large shielded door for infrared calibration in simulated space environment[J]. VACUUM, 2018, 55(5): 66 -70 .
[4] ZHENG Lie, LI Hong. Design of 200kV/2mA continuous adjustable DC high voltage generator[J]. VACUUM, 2018, 55(6): 10 -13 .
[5] CHAI Xiao-tong, WANG Liang, WANG Yong-qing, LIU Ming-kun, LIU Xing-zhou, GAN Shu-yi. Operating parameter data acquisition system for single vacuum pump based on STM32F103 microcomputer[J]. VACUUM, 2018, 55(5): 15 -18 .
[6] HUANG Si, WANG Xue-qian, MO Yu-shi, ZHANG Zhan-fa, YING Bing. Experimental study on similarity law of liquid ring compressor performances[J]. VACUUM, 2018, 55(5): 42 -45 .
[7] JI Ming, SUN Liang, YANG Min-bo. Design of automatic sealing and locking scheme for lunar sample[J]. VACUUM, 2018, 55(6): 24 -27 .
[8] LIU Yan-wen, MENG Xian-zhan, TIAN Hong, LI Fen, SHI Wen-qi, ZHU Hong, GU Bing. Test of ultra high vacuum in space traveling-wave tube[J]. VACUUM, 2018, 55(5): 25 -28 .
[9] XU Fa-jian, WANG Hai-lei, ZHAO Cai-xia, HUANG Zhi-ting. Application of chemical gases vacuum-compression recovery system in environmental engineering[J]. VACUUM, 2018, 55(5): 29 -33 .
[10] XIE Yuan-hua, HAN Jin, ZHANG Zhi-jun, XU Cheng-hai. Discussion on present situation and development trend of vacuum conveying[J]. VACUUM, 2018, 55(5): 34 -37 .
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