CN203130030U - 煤层压穿封孔器 - Google Patents
煤层压穿封孔器 Download PDFInfo
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- CN203130030U CN203130030U CN 201320147574 CN201320147574U CN203130030U CN 203130030 U CN203130030 U CN 203130030U CN 201320147574 CN201320147574 CN 201320147574 CN 201320147574 U CN201320147574 U CN 201320147574U CN 203130030 U CN203130030 U CN 203130030U
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- valve body
- hole packer
- regulation valve
- coal bed
- pressure
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CN 201320147574 CN203130030U (zh) | 2013-03-28 | 2013-03-28 | 煤层压穿封孔器 |
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CN 201320147574 CN203130030U (zh) | 2013-03-28 | 2013-03-28 | 煤层压穿封孔器 |
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CN203130030U true CN203130030U (zh) | 2013-08-14 |
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CN 201320147574 Expired - Fee Related CN203130030U (zh) | 2013-03-28 | 2013-03-28 | 煤层压穿封孔器 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109915065A (zh) * | 2019-04-18 | 2019-06-21 | 重庆大学 | 便携套管式纯压灌浆塞封孔器 |
CN111425176A (zh) * | 2020-04-02 | 2020-07-17 | 西安科技大学 | 一种煤岩层高压封孔及保压卸压装置 |
CN111425175A (zh) * | 2020-04-02 | 2020-07-17 | 西安科技大学 | 一种煤岩层高压封孔卸压保护方法 |
-
2013
- 2013-03-28 CN CN 201320147574 patent/CN203130030U/zh not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109915065A (zh) * | 2019-04-18 | 2019-06-21 | 重庆大学 | 便携套管式纯压灌浆塞封孔器 |
CN111425176A (zh) * | 2020-04-02 | 2020-07-17 | 西安科技大学 | 一种煤岩层高压封孔及保压卸压装置 |
CN111425175A (zh) * | 2020-04-02 | 2020-07-17 | 西安科技大学 | 一种煤岩层高压封孔卸压保护方法 |
CN111425176B (zh) * | 2020-04-02 | 2022-03-18 | 西安科技大学 | 一种煤岩层高压封孔及保压卸压装置 |
CN111425175B (zh) * | 2020-04-02 | 2022-03-25 | 西安科技大学 | 一种煤岩层高压封孔卸压保护方法 |
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Legal Events
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee | ||
CP01 | Change in the name or title of a patent holder |
Address after: 450064 No. 188 Zhongyuan West Road, Zhengzhou, Henan Patentee after: Zhengzhou Coal Industry (Group) Co., Ltd. Patentee after: ZHENGZHOU YUANJIAN SAFETY EQUIPMENT CO., LTD. Patentee after: Pingdingshan Antaihua Mining Safety Equipment Manufacturing Co., Ltd. Address before: 450064 No. 188 Zhongyuan West Road, Zhengzhou, Henan Patentee before: Zhengzhou Coal Industry (Group) Co., Ltd. Patentee before: Zhengzhou Yuanjian Coal Mine Equipment Co., Ltd. Patentee before: Pingdingshan Antaihua Mining Safety Equipment Manufacturing Co., Ltd. |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20180328 |
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CF01 | Termination of patent right due to non-payment of annual fee |