CN204492742U - A kind of hole sealing device for the boring of hypotonic coal seam gas phase pressure break - Google Patents
A kind of hole sealing device for the boring of hypotonic coal seam gas phase pressure break Download PDFInfo
- Publication number
- CN204492742U CN204492742U CN201420648777.4U CN201420648777U CN204492742U CN 204492742 U CN204492742 U CN 204492742U CN 201420648777 U CN201420648777 U CN 201420648777U CN 204492742 U CN204492742 U CN 204492742U
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- China
- Prior art keywords
- pressure break
- hole packer
- metal component
- mother metal
- hole
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- 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 35
- 239000003245 coal Substances 0.000 title claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 44
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 102000010637 Aquaporins Human genes 0.000 claims abstract description 11
- 108010063290 Aquaporins Proteins 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 230000008602 contraction Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000004047 hole gas Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 102000019384 Aquaporin 9 Human genes 0.000 description 2
- 108050006914 Aquaporin 9 Proteins 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 108091006146 Channels Proteins 0.000 description 1
- 208000033999 Device damage Diseases 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a kind of hole sealing device for the boring of hypotonic coal seam gas phase pressure break, it comprises two cover hardwares, hole packer, pressure break wire and aquaporin; Described aquaporin be arranged on described hole packer towards boring end face on; Described hole packer can harmomegathus, and the inside of described hole packer is the steel pipe of hollow, hole packer outermost is rubber tube, the sealing at hole packer two ends adopts plough groove type sealing system, two described cover hardwares are symmetricly set on the two ends of described hole packer respectively, often overlap hardware and comprise public hardware and mother metal component respectively, it utilizes aquaporin to input or discharges water to control expansion or the contraction of hole packer.In addition, add a set of hardware respectively at hole packer two ends, make pressure break wire need not be directly exposed outside hole packer, when pressure break, also make pressure break wire from the impact of gases at high pressure, substantially increase the access times of pressure break wire.
Description
Technical field
The utility model relates to a kind of hole sealing device of boring, is specifically related to a kind of hole sealing device for the boring of hypotonic coal seam gas phase pressure break, belongs to Coal Mining Technology field.
Background technology
Gas phase fracturing technique utilizes transfer characteristic between liquid-gas phase to carry out high pressure gas fracturing explosion, cross drainage drilling holes is adopted to take out coal-bed gas in advance as region outburst prevention measures, gas phase pressure break permeability-increasing gas Treatment process utilizes high energy gas to instantaneously act on coal seam, make loose coal, dissolve " gas pocket " that may exist, area of stress concentration is moved to coal body deep, longer release drainage is caused in front, pressure break coal seam, homogenization pressures field, equilibrium stress field, play extinction effect, pressure break moment can make coal seam produce a large amount of crack, to be filled in coal body or the crack of compacting is switched on again, produce a large amount of artificial microfissure, open original closed crack, thus raising gas permeability of coal seam, permeability, the gas of a large amount of adsorbed state is impelled to be converted into free state, and provide release channel for the gas of free state, improve gas pumping efficiency, reduce coal seam gas-bearing capacity and gas pressure, effective reduction or the gas problem solved in coal seam.High energy gas is gaseous state from liquid conversion is an endothermic process, can not produce high temperature and spark, therefore can not cause gas and dust explosion accident, and has diluting effect to gas and coal dust, belongs to safe pressure break equipment.
But, when utilizing gas phase pressure break to carry out pressure break to coal seam needs in boring gas phase pressure break equipment control, to avoid affecting fracturing effect, gas exceeding limit accident, pressure break harness damage during pressure break and to avoid because the boring that flies out of pressure break equipment during pressure break causes potential safety hazard, at present, conventional method carries out shutoff to pressure break boring.
Cement mortar method of pore sealing common at present, chemical material method of pore sealing and gas injection capsule hole method of pore sealing are irreversible or sealing of hole gas leakage, sealing material and hole packer and hole inwall generation physicochemical change, such that the plant and instrument being solidified and fixing cannot take out, the problem device such as device damage or sealing of hole gas leakage damage the problems such as the unsuccessful or shutoff of pressure break Signal transmissions is not tight.This seals the boring of gas phase pressure break with regard to needing new method for sealing.
The purpose of this utility model is, for sealing the hole sealing device of pressure break boring when providing a kind of hypotonic coal seam gas phase pressure break, especially during coal bed gas extraction for sealing a hole sealing device for gas phase fracturing equipment material, it achieves the recursive use of pressure break wire.
Utility model content
For the problems referred to above, the utility model provides a kind of hole sealing device for the boring of hypotonic coal seam gas phase pressure break, and it is characterized in that, it comprises two cover hardwares, hole packer, pressure break wire and aquaporin, described aquaporin be arranged on described hole packer towards boring end face on, described hole packer can harmomegathus, and the inside of described hole packer is the steel pipe of hollow, and steel pipe is galvanized pipe, and polishing is done on surface, and steel pipe is corrosion resistant steel tubulation, and wall thickness is more than or equal to 5mm, hole packer outermost is rubber tube, and rubber tube is model, and the built-in steel wire of rubber tube is greater than 4 layers, and the sealing at hole packer two ends adopts plough groove type sealing system, two described cover hardwares are symmetricly set on the two ends of described hole packer respectively, often overlap hardware and comprise public hardware and mother metal component respectively, described public hardware one end has axle portion, the other end has groove, described Zhou Bu center is provided with the wire guide passed for pressure break wire, and described wire guide communicates with groove, described public hardware is connected with hole packer by axle portion, and described inside grooves is provided with internal thread, one end of described mother metal component is provided with the external screw thread be connected that to cooperatively interact with the internal thread in the groove of described public hardware, the other end of described mother metal component is fixedly connected with pressure break auxiliary equipment, described mother metal component is provided with connecting hole near the side radial direction of hole packer, one end that described mother metal component is connected with described public hardware is provided with L-type wire guide, described pressure break wire is arranged on the inside of described hole packer steel pipe, and the wire guide in public hardware, can derive from the L-type wire guide of mother metal component.
Further, as preferably, described public hardware and described mother metal component are cylindric.
Further, in order to improve reliability that described hole packer is fixedly connected with described mother metal component and reduce manufacturing cost, the connected mode that described hole packer and described mother metal component are fixedly connected with is for welding.
As preferably, described mother metal component and public hardware are that stainless steel material is made.
In order to improve the reliability of locating between each component, the shaft shoulder is provided with in the middle part of described public hardware, in the middle part of described mother metal component, the shaft shoulder is set, and the hole towards top of the L-type wire guide of mother metal component is just in time in the center of the mother metal component shaft shoulder.
As preferably, the lateral aperture of the wire guide of described public hardware, the L-type wire guide of described mother metal component and the center of described hole packer steel pipe are on same axis.
A kind of hole sealing device for the boring of hypotonic coal seam gas phase pressure break that the utility model provides, when hypotonic coal seam gas phase pressure break for sealing the sealing of hole of pressure break boring, it utilizes aquaporin to input or discharges water to control expansion or the contraction of hole packer, hole packer can be reused, and aquaporin achieves the object of filling the water in water and release hole packer in hole packer.In addition, a set of hardware is added respectively at hole packer two ends, make pressure break wire need not be directly exposed outside hole packer, stop hole packer and damage pressure break wire by pressure when expansion, simultaneously, when pressure break, also make pressure break wire from the impact of gases at high pressure, substantially increase the access times of pressure break wire.
Accompanying drawing explanation
Fig. 1 is the utility model overall structure schematic diagram;
Fig. 2 is the structural representation of mother metal component of the present utility model;
Fig. 3 is the structural representation of public hardware of the present utility model;
In figure: 1, pilot hole, 2, mother metal component, 3, internal thread, 4, external screw thread, 5, L-type wire guide, 6, public hardware, 7, connecting hole, 8, hole packer, 9, aquaporin, 10, pressure break wire.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further.
As Figure 1-3, the utility model provide a kind of for hypotonic coal seam gas phase pressure break boring hole sealing device it comprise two cover hardwares, hole packer 8, pressure break wire 10 and aquaporin 9; Aquaporin 9 be arranged on hole packer 8 towards boring end face on; Hole packer 8 can harmomegathus, and the inside of hole packer 8 is the steel pipe of hollow, outside is rubber, as shown in Figure 1, two cover hardwares are symmetricly set on the two ends of hole packer 8 respectively, often overlap hardware and comprise public hardware 6 and mother metal component 2 respectively, one end of public hardware 6 has axle portion, the other end has groove, Zhou Bu center is provided with the wire guide 1 passed for pressure break wire 10, and wire guide 1 communicates with groove, public hardware 6 is connected with hole packer 8 by axle portion, and inside grooves is provided with internal thread 3; One end of mother metal component 2 is provided with the external screw thread 4 be connected that to cooperatively interact with the internal thread 3 in the groove of public hardware 6, the other end of mother metal component 2 is fixedly connected with pressure break auxiliary equipment, mother metal component 2 is provided with connecting hole 7 near the side radial direction of hole packer 8, one end that mother metal component 2 is connected with public hardware 6 is provided with L-type wire guide 5, pressure break wire 10 is arranged on the inside of the steel pipe of the inside of hole packer 8, and the wire guide 1 in public hardware 6, can derive from the L-type wire guide 5 of mother metal component 6.
In the present embodiment, public hardware 6 and mother metal component 2 are cylindric.
Meanwhile, in order to improve reliability that hole packer 8 is fixedly connected with mother metal component 2 and reduce manufacturing cost, the connected mode that hole packer 8 and mother metal component 2 are fixedly connected with is for welding.
In addition, mother metal component 6 and public hardware 2 are stainless steel material and make.
In order to improve the reliability of locating between each component, the middle part of public hardware 6 is provided with the shaft shoulder, the middle part of mother metal component 2 arranges the shaft shoulder, and the hole towards top of the L-type wire guide 5 of mother metal component 2 is just in time in the center of the shaft shoulder of mother metal component 2.
In the present embodiment, the center of the steel pipe in the lateral aperture of the wire guide 1 of public hardware 6, the L-type wire guide 5 of mother metal component and hole packer 8 is on same axis.
Before coal mine underground fracturing, in advance pressure break wire is penetrated in hole packer, draw from the hardware at hole packer two ends, and hardware and hole packer are linked together, during pressure break, this complete equipment is sent into by auxiliary equipment in the gas phase pressure break boring needing sealing of hole, use the pressure break wire of drawing in special gas phase pressure break wire and hardware to link together, draw boring, then in hole packer, inject water by aquaporin, water by hole packer rising, thus realizes shutoff boring.After sealing of hole completes, by the controller of water in external control hole packer, water is released into outside hole packer from hole packer, then hole packer is taken out, carry out follow-up operation.
The hole packer that gas phase pressure break is holed is connected on bore inner component by this preferred embodiment, effectively can control when gas phase pressure break to the pressure break equipment in boring, easy to use, simple to operate, desirable to the plugging effect of boring.
The utility model seals pressure break boring sealing of hole down-hole gas phase fracturing equipment material when can be used as hypotonic coal seam gas phase pressure break fills, and also can be used for the application of similar functions demand.
The foregoing is only preferred embodiment of the present utility model, be not limited to the detailed description of the invention of the present embodiment, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1., for a hole sealing device for hypotonic coal seam gas phase pressure break boring, it is characterized in that, it comprises two cover hardwares, hole packer, pressure break wire and aquaporin, described aquaporin be arranged on described hole packer towards boring end face on, described hole packer can harmomegathus, and the inside of described hole packer is the steel pipe of hollow, and steel pipe is galvanized pipe, and polishing is done on surface, and steel pipe is corrosion resistant steel tubulation, and wall thickness is more than or equal to 5mm, hole packer outermost is rubber tube, and the built-in steel wire of rubber tube is greater than 4 layers, and the sealing at hole packer two ends adopts plough groove type sealing system, two described cover hardwares are symmetricly set on the two ends of described hole packer respectively, often overlap hardware and comprise public hardware and mother metal component respectively, described public hardware one end has axle portion, the other end has groove, described Zhou Bu center is provided with the wire guide passed for pressure break wire, and described wire guide communicates with groove, described public hardware is connected with hole packer by axle portion, and described inside grooves is provided with internal thread, one end of described mother metal component is provided with the external screw thread be connected that to cooperatively interact with the internal thread in the groove of described public hardware, the other end of described mother metal component is fixedly connected with pressure break auxiliary equipment, described mother metal component is provided with connecting hole near the side radial direction of hole packer, one end that described mother metal component is connected with described public hardware is provided with L-type wire guide, described pressure break wire is arranged on the inside of described hole packer steel pipe, and the wire guide in public hardware, can derive from the L-type wire guide of mother metal component.
2. a kind of hole sealing device for the boring of hypotonic coal seam gas phase pressure break according to claim 1, it is characterized in that, described public hardware and described mother metal component are cylindric.
3. a kind of hole sealing device for the boring of hypotonic coal seam gas phase pressure break according to claim 1, it is characterized in that, the connected mode that described hole packer and described mother metal component are fixedly connected with is for welding.
4. a kind of hole sealing device for the boring of hypotonic coal seam gas phase pressure break according to claim 3, it is characterized in that, described mother metal component and public hardware are that stainless steel material is made.
5. a kind of hole sealing device for the boring of hypotonic coal seam gas phase pressure break according to claim 1, it is characterized in that, the shaft shoulder is provided with in the middle part of described public hardware, in the middle part of described mother metal component, the shaft shoulder is set, and the hole towards top of the L-type wire guide of mother metal component is just in time in the center of the mother metal component shaft shoulder.
6. a kind of hole sealing device for the boring of hypotonic coal seam gas phase pressure break of any one according to claim 1-5, it is characterized in that, the lateral aperture of the wire guide of described public hardware, the L-type wire guide of described mother metal component and the center of described hole packer steel pipe are on same axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420648777.4U CN204492742U (en) | 2014-10-31 | 2014-10-31 | A kind of hole sealing device for the boring of hypotonic coal seam gas phase pressure break |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420648777.4U CN204492742U (en) | 2014-10-31 | 2014-10-31 | A kind of hole sealing device for the boring of hypotonic coal seam gas phase pressure break |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204492742U true CN204492742U (en) | 2015-07-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420648777.4U Expired - Lifetime CN204492742U (en) | 2014-10-31 | 2014-10-31 | A kind of hole sealing device for the boring of hypotonic coal seam gas phase pressure break |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204492742U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612625A (en) * | 2014-10-31 | 2015-05-13 | 河南理工大学 | Hole sealing device for low-permeability coal bed gas-phase fracturing drilling |
-
2014
- 2014-10-31 CN CN201420648777.4U patent/CN204492742U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612625A (en) * | 2014-10-31 | 2015-05-13 | 河南理工大学 | Hole sealing device for low-permeability coal bed gas-phase fracturing drilling |
| CN104612625B (en) * | 2014-10-31 | 2018-05-29 | 河南理工大学 | A kind of hole sealing device for hypotonic coal seam gas phase fracturing borehole |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |