| SUN Yuantao(孙远韬)*,ZHANG Min*,YUAN Lindong**.[J].高技术通讯(英文),2023,29(3):231~246 |
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| Experimental study on the failure factors of the O-ring for long-term working |
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| DOI：10. 3772/ j. issn. 1006-6748. 2023. 03. 002 |
| 中文关键词: |
| 英文关键词: NBR O-ring, compression set, rotary dynamic seal, orthogonal test, regression analysis |
| 基金项目: |
| Author Name | Affiliation | | SUN Yuantao(孙远韬)* | (*School of Mechanical Engineering,Tongji University,Shanghai 200092,P. R. China)
(**Metering Department,Shanghai,Fiorenti Gas Equipment CO,. LTD,Shanghai 201201,P. R. China) | | ZHANG Min* | | | YUAN Lindong** | |
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| 中文摘要: |
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| 英文摘要: |
| The O-ring in the rotary dynamic sealing system of gas meters should have outstanding longterm sealing performance under the conditions of high and low temperature,which can ensure the safety of gas meters. In this paper,based on the O-ring sealing mechanism,taking the compression set as the main sealing index, a finite element simulation method is used to analyze the failure characteristics under different conditions according to the constitutive relation of nitrile rubber. Then,using the orthogonal test method for the O-ring sealing performance index,the main factors which affect the law of long-term test are analysed,and the orthogonal regression mathematical model that can predict the compression set is obtained. Finally,the O-ring is improved according to the model,and the test results show that the performance of the new O-rings with high and low temperature resistance is greatly improved and meets the expected target requirements. |
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