CN204113194U - A kind of gas drilling hole sealing device integrating pressure measurement and extraction function - Google Patents
A kind of gas drilling hole sealing device integrating pressure measurement and extraction function Download PDFInfo
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- CN204113194U CN204113194U CN201420599185.8U CN201420599185U CN204113194U CN 204113194 U CN204113194 U CN 204113194U CN 201420599185 U CN201420599185 U CN 201420599185U CN 204113194 U CN204113194 U CN 204113194U
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Abstract
The utility model discloses a kind of gas drilling hole sealing device integrating pressure measurement and extraction function, it comprises: gas pipe, and its one end is provided with screen cover, and the other end is connecting tee ball valve, gas pressure table and valve three successively; First elasticity sealing of hole capsule and the second elasticity sealing of hole capsule, its interval fixed cover is located on the outer wall of gas pipe, and the inner chamber of two elasticity sealing of hole capsules is communicated with by middle moulding pipe; Sealing mucus carrier pipe, its one end is the port of export, the port of export through after the second elasticity sealing of hole capsule two elasticity sealing of hole capsules, the other end is arrival end, successively Bonding pressure table one and valve two; Water injection pipe, its one end is water filling port, successively Bonding pressure table two and valve one, and the other end is delivery port, and delivery port is positioned at the second elasticity sealing of hole capsule.Utilize this device, can extraction pressure measurement again after first pressure measurement in same descending boring, the impact of hydraulic pressure on pressure measurement and extraction can be eliminated simultaneously, be specially adapted to the measurement to high concentration gas pressure.
Description
Technical field
The utility model relates to a kind of gas drilling hole sealing device, particularly relates to a kind of gas drilling hole sealing device integrating pressure measurement and extraction function.
Background technology
Gas Disaster is is correctly prevented and treated Safety of Coal Mine Production significant, and in the engineering practice of control gas, secondly first necessary Obtaining Accurate coal-bed gas pressure is the efficient extraction of coal-bed gas.
In the process of gas pressure measurement, the seal degree of boring is comparatively large on the impact of gas piezo-effect, and some extraneous factor (as hydraulic pressure in boring) also has certain influence to gas pressure measurement.Engineering staff is when researching and analysing existing manometric technique-capsule mucus manometric method, when coal-bed gas pressure is more than 4Mpa, can be there is the even whole pressure tester of crimp and can eject from boring in the structure of pressure tester, thus cannot realize the Measurement accuracy to high concentration gas pressure.
In addition, existing drilling and sealing method only carries out gas pressure measurement or gas pumping to a boring, this adds increased the construction volume of boring, waste time simultaneously and waste material.
Utility model content
For overcoming the deficiency of existing hole sealing technology, the purpose of this utility model is, a kind of gas drilling hole sealing device integrating pressure measurement and extraction function is being provided, its plugging effect is good, simple to operate, the function of the pressure measurement again of extraction after first pressure measurement can be realized in same descending boring, hydraulic pressure can be eliminated simultaneously and gas pressure is measured and the impact of gas pumping, to the measurement of high concentration gas pressure, there is obviously advantage.
For achieving the above object, the utility model is achieved through the following technical solutions:
Integrate a gas drilling hole sealing device for pressure measurement and extraction function, it comprises: gas pipe, and its one end is provided with screen cover, and the other end is connecting tee ball valve, gas pressure table and valve three successively; First elasticity sealing of hole capsule and the second elasticity sealing of hole capsule, its interval fixed cover is located on the outer wall of gas pipe, and the inner chamber of two elasticity sealing of hole capsules is communicated with by middle moulding pipe; Sealing mucus carrier pipe, its one end is the port of export, the port of export through after the second elasticity sealing of hole capsule two elasticity sealing of hole capsules, the other end is arrival end, successively Bonding pressure table one and valve two; Water injection pipe, its one end is water filling port, successively Bonding pressure table two and valve one, and the other end is delivery port, and delivery port is positioned at the second elasticity sealing of hole capsule.
In a preferred embodiment, within 1m at the bottom of the distance drilling hole of described screen cover top.
In a preferred embodiment, described second elasticity sealing of hole capsule external diameter is greater than the first elasticity sealing of hole capsule external diameter, and described first elasticity sealing of hole capsule length is greater than the second elasticity sealing of hole capsule length.
In a preferred embodiment, described first elasticity sealing of hole capsule is positioned at side at the bottom of drilling hole, and described second elasticity sealing of hole capsule is positioned near drilling orifice side, two elasticity sealing of hole capsule interval 2m.
The beneficial effects of the utility model are: this gas drilling hole sealing device integrating pressure measurement and extraction function is simple to operate, easy for installation, device is recyclable, plugging effect is good, the function of the pressure measurement again of extraction after first pressure measurement can be realized in same descending boring, the impact that hydraulic pressure is measured gas pressure can be eliminated simultaneously, to the measurement of high concentration gas pressure, there is obviously advantage, there is in this area practicality widely.
Accompanying drawing explanation
Fig. 1 is the structural representation of using state of the present utility model.
In figure: 1-gas pipe; 2-first elasticity sealing of hole capsule; 3-second elasticity sealing of hole capsule; 4-seals mucus carrier pipe; 5-water injection pipe; Moulding pipe in 6-; 7-screen cover; 8-pressure meter one; 9-pressure meter two; 10-valve one; 11-tee ball valve; 12-valve two; 13-gas pressure table; 14-valve three; 15-holes.
Detailed description of the invention
Be further described below in conjunction with accompanying drawing 1 pair of the utility model:
As shown in Figure 1, the gas drilling hole sealing device integrating pressure measurement and extraction function of the present utility model, is formed primarily of gas pipe 1, first elasticity sealing of hole capsule 2, second elasticity sealing of hole capsule 3, water injection pipe 5 and sealing mucus carrier pipe 4.One end of gas pipe 1 is provided with screen cover 7, at the bottom of the distance drilling hole of screen cover 7 top within 1m, pumps ponding in boring 15 like this, gas pipe 1 other end connecting tee ball valve 11 by gas pipe 1, be convenient to draw water, pressure measurement, these three pipelines of extraction switching.Second elasticity sealing of hole capsule 3 external diameter is greater than the first elasticity sealing of hole capsule 2 external diameter, first elasticity sealing of hole capsule 2 length is greater than the second elasticity sealing of hole capsule 3 length, like this, first elasticity sealing of hole capsule 2 and the larger frictional force of the second existence of elasticity sealing of hole capsule 3 respectively and between boring 15 inwall, what ensure the first elasticity sealing of hole capsule 2 bears less thrust near boring 15 hole bottom faces simultaneously, thus improves the withstand voltage limit of whole device.High pressure mucus is injected by the headspace between sealing mucus carrier pipe 4 to two elasticity sealing of hole capsules.In two elasticity sealing of hole capsules, inject water under high pressure by water injection pipe 5, two elasticity sealing of hole capsules expand boring 15 shutoff, and ensure that plugging effect by good suitability.
During concrete use, first, in coal mine gas extraction drill site, the descending boring in large aperture is implemented, when bit drills is to the intersection of coal seam and roof, stops creeping into, exit drilling rod, change little drill bit, continue to execute brill in the boring executed, form complete boring 15; Utilize gas pipe 1 that unexpanded first elasticity sealing of hole capsule 2 and the second elasticity sealing of hole capsule 3 are pushed to assigned address, i.e. the intersection being positioned at coal seam and roof near boring 15 hole bottom faces of the second elasticity sealing of hole capsule 3; Then in two elasticity sealing of hole capsules, inject water under high pressure by water injection pipe 5, after elasticity sealing of hole capsule expands, form self adaptation coupling, fast, accurate and comprehensive by bore closed after capsule wall and coal petrography wall close contact, then valve-off 1; Then high pressure mucus is filled, then valve-off 2 12 by the reserved cavity between sealing mucus carrier pipe 4 to two elasticity sealing of hole capsules; Then suction pump is connected with tee ball valve 11, the switch of swivel tee ball valve 11, suction pump is communicated with gas pipe 1, start suction pump, pump the ponding in boring, after the end-of-job that draws water, valve 3 14 is kept to close, the switch of swivel tee ball valve 11, makes gas pipe 1 be communicated with gas pressure table 13, starts to carry out gas pressure measurement; After pressure measurement end-of-job, extraction equipment is connected with valve 3 14, opens valve 3 14, start extraction equipment, carry out gas pumping.Certainly, in gas pressure measurement and gas pumping process, need regularly to repeat above-mentioned step of drawing water to carry out drill-hole pumping.
Claims (4)
1. integrate a gas drilling hole sealing device for pressure measurement and extraction function, it is characterized in that: described hole sealing device comprises:
Gas pipe, its one end is provided with screen cover, and the other end is connecting tee ball valve, gas pressure table and valve three successively;
First elasticity sealing of hole capsule and the second elasticity sealing of hole capsule, its interval fixed cover is located on the outer wall of gas pipe, and the inner chamber of two elasticity sealing of hole capsules is communicated with by middle moulding pipe;
Sealing mucus carrier pipe, its one end is the port of export, the port of export through after the second elasticity sealing of hole capsule two elasticity sealing of hole capsules, the other end is arrival end, successively Bonding pressure table one and valve two;
Water injection pipe, its one end is water filling port, successively Bonding pressure table two and valve one, and the other end is delivery port, and delivery port is positioned at the second elasticity sealing of hole capsule.
2. a kind of gas drilling hole sealing device integrating pressure measurement and extraction function according to claim 1, is characterized in that: within 1m at the bottom of the distance drilling hole of described screen cover top.
3. a kind of gas drilling hole sealing device integrating pressure measurement and extraction function according to claim 1, it is characterized in that: described second elasticity sealing of hole capsule external diameter is greater than the first elasticity sealing of hole capsule external diameter, described first elasticity sealing of hole capsule length is greater than the second elasticity sealing of hole capsule length.
4. a kind of gas drilling hole sealing device integrating pressure measurement and extraction function according to claim 1 or 3, it is characterized in that: described first elasticity sealing of hole capsule is positioned at side at the bottom of drilling hole, described second elasticity sealing of hole capsule is positioned near drilling orifice side, two elasticity sealing of hole capsule interval 2m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420599185.8U CN204113194U (en) | 2014-10-16 | 2014-10-16 | A kind of gas drilling hole sealing device integrating pressure measurement and extraction function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420599185.8U CN204113194U (en) | 2014-10-16 | 2014-10-16 | A kind of gas drilling hole sealing device integrating pressure measurement and extraction function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204113194U true CN204113194U (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420599185.8U Expired - Fee Related CN204113194U (en) | 2014-10-16 | 2014-10-16 | A kind of gas drilling hole sealing device integrating pressure measurement and extraction function |
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| CN (1) | CN204113194U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971590A (en) * | 2016-06-29 | 2016-09-28 | 陕西陕煤黄陵矿业有限公司 | Pressure measurement and extraction device for surrounding rock gas in mine and operation method |
| CN107664019A (en) * | 2016-07-27 | 2018-02-06 | 徐州博安科技发展有限责任公司 | One-way expansion sealing of hole extraction pressure tester |
| CN109113786A (en) * | 2018-10-12 | 2019-01-01 | 安徽理工大学 | Drilling rod formula gas drainage device can be exited |
| CN109707369A (en) * | 2019-01-02 | 2019-05-03 | 安徽理工大学 | A kind of coal mine gas extraction drill hole detection instrument efficiently conveys recyclable device |
| CN111963150A (en) * | 2020-08-27 | 2020-11-20 | 安徽理工大学 | Coal bed gas pressure measuring device and using method |
| CN114542151A (en) * | 2022-01-12 | 2022-05-27 | 中南大学 | Coal face gas extraction and roof treatment method |
-
2014
- 2014-10-16 CN CN201420599185.8U patent/CN204113194U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971590A (en) * | 2016-06-29 | 2016-09-28 | 陕西陕煤黄陵矿业有限公司 | Pressure measurement and extraction device for surrounding rock gas in mine and operation method |
| CN107664019A (en) * | 2016-07-27 | 2018-02-06 | 徐州博安科技发展有限责任公司 | One-way expansion sealing of hole extraction pressure tester |
| CN109113786A (en) * | 2018-10-12 | 2019-01-01 | 安徽理工大学 | Drilling rod formula gas drainage device can be exited |
| CN109113786B (en) * | 2018-10-12 | 2023-09-08 | 安徽理工大学 | Gas extraction device capable of withdrawing drill rod |
| CN109707369A (en) * | 2019-01-02 | 2019-05-03 | 安徽理工大学 | A kind of coal mine gas extraction drill hole detection instrument efficiently conveys recyclable device |
| CN111963150A (en) * | 2020-08-27 | 2020-11-20 | 安徽理工大学 | Coal bed gas pressure measuring device and using method |
| CN111963150B (en) * | 2020-08-27 | 2023-08-22 | 安徽理工大学 | Coal bed gas pressure measuring device and using method |
| CN114542151A (en) * | 2022-01-12 | 2022-05-27 | 中南大学 | Coal face gas extraction and roof treatment method |
| CN114542151B (en) * | 2022-01-12 | 2022-11-11 | 中南大学 | Coal face gas extraction and roof treatment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20151016 |
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| EXPY | Termination of patent right or utility model |