CN202467705U - 钻杆用单向阀 - Google Patents
钻杆用单向阀 Download PDFInfo
- Publication number
- CN202467705U CN202467705U CN2012200278013U CN201220027801U CN202467705U CN 202467705 U CN202467705 U CN 202467705U CN 2012200278013 U CN2012200278013 U CN 2012200278013U CN 201220027801 U CN201220027801 U CN 201220027801U CN 202467705 U CN202467705 U CN 202467705U
- Authority
- CN
- China
- Prior art keywords
- way valve
- cooling water
- valve body
- drilling rod
- drill rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
Description
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012200278013U CN202467705U (zh) | 2012-01-20 | 2012-01-20 | 钻杆用单向阀 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012200278013U CN202467705U (zh) | 2012-01-20 | 2012-01-20 | 钻杆用单向阀 |
Publications (1)
Publication Number | Publication Date |
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CN202467705U true CN202467705U (zh) | 2012-10-03 |
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ID=46915871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN2012200278013U Expired - Lifetime CN202467705U (zh) | 2012-01-20 | 2012-01-20 | 钻杆用单向阀 |
Country Status (1)
Country | Link |
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CN (1) | CN202467705U (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106894779A (zh) * | 2017-03-09 | 2017-06-27 | 开滦能源化工股份有限公司范各庄矿业分公司 | 用于煤矿井下探放水钻进的逆水阀 |
-
2012
- 2012-01-20 CN CN2012200278013U patent/CN202467705U/zh not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106894779A (zh) * | 2017-03-09 | 2017-06-27 | 开滦能源化工股份有限公司范各庄矿业分公司 | 用于煤矿井下探放水钻进的逆水阀 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: HANGZHOU XIANGLONG DRILLING EQUIPMENT TECHNOLOGY C Free format text: FORMER NAME: HANGZHOU XIANGLONG DRILLING EQUIPMENT CO., LTD. |
|
CP01 | Change in the name or title of a patent holder |
Address after: 311504 worker Road, the Fuchun River Town, Tonglu County, Hangzhou, Zhejiang Patentee after: Hangzhou Xianglong Drilling Equipment Technology Co., Ltd. Address before: 311504 worker Road, the Fuchun River Town, Tonglu County, Hangzhou, Zhejiang Patentee before: Hangzhou Xianglong Drilling Equipment Co., Ltd. |
|
CX01 | Expiry of patent term | ||
CX01 | Expiry of patent term |
Granted publication date: 20121003 |