热采井口装置螺栓的蠕变及应力松弛规律研究
The stress relaxation phenomenon of bolt used in thermal recovery wellhead is studied experimentally under field conditions.The normal and high temperature tensile test,creep test and stress relaxation test are carried out respectively.The comparison of the experimental results shows that the streng...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2021-01-01
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| Series: | Jixie qiangdu |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.01.030 |
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| author | 王亭沂 曹旭祥 李风 孙爽 |
| author_facet | 王亭沂 曹旭祥 李风 孙爽 |
| author_sort | 王亭沂 |
| collection | DOAJ |
| description | The stress relaxation phenomenon of bolt used in thermal recovery wellhead is studied experimentally under field conditions.The normal and high temperature tensile test,creep test and stress relaxation test are carried out respectively.The comparison of the experimental results shows that the strength of bolt material decreases and the plasticity increases at high temperature.The creep deformation is obvious under initial stress which explain the reason of stress relaxation in principle.The stress relaxation test,it can be found that the bolt stress have decreased obviously under the field condition.According to the stress relaxation experimental data,the stress relaxation formula under the field condition can be fitted.Finite element software is used to calculate the minimum pre-tightening load of bolts for each flange of KR21-370 thermal recovery wellhead device to achieve sealing.Combined with stress relaxation formula,the time required for flanges to fail due to stress relaxation of bolts is calculated.Solutions are proposed for bolts prone to failure. |
| format | Article |
| id | doaj-art-6b550a9fe87c4ebb93b4036030b547bb |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2021-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-6b550a9fe87c4ebb93b4036030b547bb2025-01-15T02:26:38ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692021-01-0120421030609931热采井口装置螺栓的蠕变及应力松弛规律研究王亭沂曹旭祥李风孙爽The stress relaxation phenomenon of bolt used in thermal recovery wellhead is studied experimentally under field conditions.The normal and high temperature tensile test,creep test and stress relaxation test are carried out respectively.The comparison of the experimental results shows that the strength of bolt material decreases and the plasticity increases at high temperature.The creep deformation is obvious under initial stress which explain the reason of stress relaxation in principle.The stress relaxation test,it can be found that the bolt stress have decreased obviously under the field condition.According to the stress relaxation experimental data,the stress relaxation formula under the field condition can be fitted.Finite element software is used to calculate the minimum pre-tightening load of bolts for each flange of KR21-370 thermal recovery wellhead device to achieve sealing.Combined with stress relaxation formula,the time required for flanges to fail due to stress relaxation of bolts is calculated.Solutions are proposed for bolts prone to failure.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.01.030 |
| spellingShingle | 王亭沂 曹旭祥 李风 孙爽 热采井口装置螺栓的蠕变及应力松弛规律研究 Jixie qiangdu |
| title | 热采井口装置螺栓的蠕变及应力松弛规律研究 |
| title_full | 热采井口装置螺栓的蠕变及应力松弛规律研究 |
| title_fullStr | 热采井口装置螺栓的蠕变及应力松弛规律研究 |
| title_full_unstemmed | 热采井口装置螺栓的蠕变及应力松弛规律研究 |
| title_short | 热采井口装置螺栓的蠕变及应力松弛规律研究 |
| title_sort | 热采井口装置螺栓的蠕变及应力松弛规律研究 |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.01.030 |
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