CN104179467B - 钻杆用防漏旁通阀装置 - Google Patents
钻杆用防漏旁通阀装置 Download PDFInfo
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- CN104179467B CN104179467B CN201410349745.9A CN201410349745A CN104179467B CN 104179467 B CN104179467 B CN 104179467B CN 201410349745 A CN201410349745 A CN 201410349745A CN 104179467 B CN104179467 B CN 104179467B
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- hole
- step surface
- sealing ring
- valve body
- arc groove
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Abstract
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201410349745.9A CN104179467B (zh) | 2014-07-23 | 钻杆用防漏旁通阀装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201410349745.9A CN104179467B (zh) | 2014-07-23 | 钻杆用防漏旁通阀装置 |
Publications (2)
Publication Number | Publication Date |
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CN104179467A CN104179467A (zh) | 2014-12-03 |
CN104179467B true CN104179467B (zh) | 2017-01-04 |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4441689A (en) * | 1981-12-10 | 1984-04-10 | Tomozo Kato | Bonnetless compact design globe valve |
CN201090179Y (zh) * | 2007-10-29 | 2008-07-23 | 大庆石油管理局 | 防抽吸旁通阀 |
CN201818788U (zh) * | 2010-07-22 | 2011-05-04 | 大连理工大学 | 弹性橡胶双向密封环 |
CN103437727A (zh) * | 2013-08-29 | 2013-12-11 | 成都科盛石油科技有限公司 | 密封性好的旁通阀 |
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4441689A (en) * | 1981-12-10 | 1984-04-10 | Tomozo Kato | Bonnetless compact design globe valve |
CN201090179Y (zh) * | 2007-10-29 | 2008-07-23 | 大庆石油管理局 | 防抽吸旁通阀 |
CN201818788U (zh) * | 2010-07-22 | 2011-05-04 | 大连理工大学 | 弹性橡胶双向密封环 |
CN103437727A (zh) * | 2013-08-29 | 2013-12-11 | 成都科盛石油科技有限公司 | 密封性好的旁通阀 |
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Legal Events
Date | Code | Title | Description |
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PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
CB03 | Change of inventor or designer information |
Inventor after: Lin Wenlian Inventor before: Zhou Bin |
|
TA01 | Transfer of patent application right |
Effective date of registration: 20160926 Address after: Anxi County of Quanzhou City, Fujian province 362400 Jiandou town Dongyang village after Wai after the pit No. 25 Applicant after: Lin Wenlian Address before: 610000 Chenghua District, Sichuan, Jianshe Road, No. 56, Applicant before: The Chengdu general petroleum works technology of height Co., Ltd |
|
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 Termination date: 20180723 |