CN203685101U - Novel gas drilling out-hole sealing device for mining - Google Patents
Novel gas drilling out-hole sealing device for mining Download PDFInfo
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- CN203685101U CN203685101U CN201320888748.0U CN201320888748U CN203685101U CN 203685101 U CN203685101 U CN 203685101U CN 201320888748 U CN201320888748 U CN 201320888748U CN 203685101 U CN203685101 U CN 203685101U
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- hole
- sealing
- seal closure
- sealing device
- gas drilling
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Abstract
The utility model relates to a novel gas drilling out-hole sealing device for mining, and belongs to the field of gas hole drilling and sealing device technology. The device comprises a main pipe; the inner wall of the main pipe is a thread-type inner wall; a first sealing cover is arranged on the main pipe; a through hole is arranged in the first sealing cover; the cover opening wall of the first sealing cover is a wedge wall; a second sealing cover is arranged on the main pipe and on the inner side of the first sealing cover; the first sealing cover does not directly contact the second sealing cover; and the opening direction of the first sealing cover is the same with that of the second sealing cover. The device is good in sealing ability; when gas extraction work at the first stage is finished, gas extraction can be further carried out without damage to an original sealing hole body; and demand for materials for sealing holes are low, and a better effect can be achieved just by using common fine cement.
Description
Technical field
The utility model belongs to gas drilling hole sealing device technical field, is specifically related to hole sealing device outside a kind of new type mining gas drilling hole.
Background technology
Coal mine operation need to extract the gas in coal seam, to reduce the gas bearing capacity in coal seam, thereby reduces gas burst accident, has also improved down-hole resource utilization.Coal mine gas extraction at present adopts hole drilling type extraction way more, hole drilling type gas pumping need to carry out sealing of hole to boring after the work of drilling completes, reducing first gas flows out from boring, second releasing pipe ensures to form enclosed cavity in boring, so that can be extracted the gas pouring in boring out effectively.
At present there is following problem in hole sealing technology: 1, sealing material or sealing of hole slurries can not effectively infiltrate drill hole wall, after sealing material or sealing of hole slurries solidify, and between drill hole wall, still has space, and tightness is inadequate.2, common sealing of hole mode, after sealing of hole, sealing material will became one with gas drainage pipe after solidifying, and is unfavorable for releasing pipe further to send into boring deep, if releasing pipe is continued to advance toward boring deep, will destroy the sealing of hole body of original solid that congealed into; 3, common sealing of hole mode is had relatively high expectations to sealing material, as good in dilatancy etc.
In Chinese Patent Application No.: disclose a kind of gas drainage from coal seam drilling and sealing device in 201020229540.4, comprised gas pumping pipe, cylindrical cloth bag and there is the casting resin of swelling properties; Cylindrical cloth bag two ends are respectively equipped with thread gluing and the snap ring that fixing cloth bag is used, and cylindrical cloth bag is alongst provided with slide fastener; The complete bulging of cylindrical cloth bag struts the diameter that later horizontal diameter is greater than coal bed drilling; Gas pumping pipe penetrates from cylindrical cloth bag one end, and the other end passes; Gas pumping length of tube is greater than cylindrical cloth bag length; On gas pumping pipe, the cannelure that prevents that snap ring from sliding is carved with in corresponding position; Cylindrical cloth bag two ends are stuck on gas pumping pipe cannelure by snap ring; The casting resin with swelling properties adopts polyurethane combination AB liquid.This technical scheme has certain sealing effectiveness, but high to sealing material requirement, cost is high.
In Chinese Patent Application No.: disclose a kind of mash gas pumping drilling hole sealing device and method in 201210011277, device comprises the cylinder that is furnished with some holes, on cylinder inner wall, be attached with one deck inner membrance, the both sides of cylinder are respectively equipped with the cylinder protecgulum and the cylinder bonnet that are sleeved on gas pumping pipe, in cylinder, be provided with Circular Plate, Circular Plate one side is provided with spring, and opposite side is provided with some prickers and stay cord, is provided with the black material pouch of the polyurethane being set in together and polyurethane and expects in vain pouch in cylinder.When device is delivered to boring with gas pumping pipe in when desired location, pull stay cord, make hour hand in Circular Plate puncture the black material pouch of polyurethane and polyurethane is expected pouch in vain, two kinds of slurries outflows in bag are mixed, repeatedly pull Circular Plate repeatedly, make the black material pouch of polyurethane and polyurethane expect that in vain the slurries in pouch repeatedly stir fully and mix; The encapsulant that mixed slurry reaction generates constantly expands, and bursts inner membrance, and extrudes with the hole wall of holing and combine closely in some holes from cylinder barrel, realizes the sealing to boring.This technical scheme to sealing material require high, and releasing pipe further can not be sent into boring deep draw out methane again.
In Chinese Patent Application No.: 201110233421.5 disclose a kind of gas drainage hole-sealing device, comprise releasing pipe, Grouting Pipe and grouting pump, feed pipe is connected to grouting pump, grouting pump is connected with discharge nozzle, discharge nozzle is connected with Grouting Pipe by rifle head, there is hole sealing bag at releasing pipe two ends, and sealing material wraps tightly in releasing pipe outer wall.This technical scheme has certain sealing effectiveness, but high to sealing material requirement, and complex structure.
Utility model content
For the problems referred to above, the utility model provides a kind of good sealing effect, low to sealing material requirement, and hole sealing device outside new type mining gas drilling hole simple in structure.
In order to address the above problem, the technical scheme that the utility model provides is:
Hole sealing device outside a kind of new type mining gas drilling hole, comprises main body tube, and described main body tube inwall is screw-type inwall; Described main body tube is provided with the first seal closure; Described the first seal closure is provided with through hole; Can not only make sealing material enter coal petrography crack by such design, good leak tightness, and after the methane drawing work of one-phase completes, while wanting methane drawing further in holing, only need, by gas drainage pipe to the inner continuation of boring precession, can't destroy original sealing of hole body.The main body tube of gas drainage pipe and device is closely sealed with thread forms, and contact distance is longer, good leak tightness.Worker also can before by gas drainage pipe precession, brush appropriate airtight oil on gas drainage pipe, further strengthens seal; Carry out sealing of hole with this device in addition, lower to the requirement of sealing material, just can reach good effect with common thin cement.
Preferably, the cover mouth wall of described the first seal closure is tapered wall, to can cut easily in coal petrography.
Preferably, be also provided with the second seal closure on described main body tube, described the second seal closure is positioned at described the first seal closure inner side, and described first and second seal closure is directly contact not, and the opening direction of described first and second seal closure is identical; Thereby be absorbed in coal petrography wall by increasing the convenient device that allows of the second seal closure.
Preferably, the cover mouth wall of described the second seal closure is also tapered wall; To can cut easily in coal petrography.
Preferably, described first and second seal closure is annular seal cover.
Preferably, in described through hole, be provided with note tube sealing; Can carry out material feeding by note tube sealing.
Preferably, the port that described note tube sealing is positioned at described the first seal closure outside is provided with capping, after material feeding completes, note tube sealing is sealed.
Preferably, described capping is threaded with the port that is positioned at described the first seal closure outside, designs like this good airproof performance.
Preferably, described main body tube is cylinder-shaped body pipe.
Preferably, the one end that is positioned at described the first seal closure outside on described main body tube is flange; When use, apply external force by flange, make device be absorbed in a segment distance in coal petrography wall, and then increase sealing.
Compared with prior art, the beneficial effects of the utility model are:
The utility model can not only make sealing material enter coal petrography crack, good leak tightness, and after the methane drawing work of one-phase completes, while wanting methane drawing further in holing, only need, by gas drainage pipe to the inner continuation of boring precession, can't destroy original sealing of hole body; The main body tube of gas drainage pipe and device is closely sealed with thread forms, and contact distance is longer, good leak tightness; Use in addition the utility model to carry out sealing of hole, lower to the requirement of sealing material, just can reach good effect with common thin cement.
Brief description of the drawings
Fig. 1 is the utility model structural representation;
Schematic diagram when Fig. 2 is the utility model use.
In figure: 1, the first seal closure, 2, depression shape space, 3, the second seal closure, 4, intermediate cylindrical space, 5, cylinder-shaped body pipe, 6, note tube sealing, 7, threaded closure caps, 8, note sealing material mouth, 9, go out sealing material mouth, 10, flange, 11, screw-type inwall, 12, tapered wall, 13, attached boring, 14, coal petrography, 15, gas drilling, 16, gas drainage pipe, 17, through hole.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further:
In conjunction with Fig. 1, Fig. 2, hole sealing device outside a kind of new type mining gas drilling of the present utility model hole, comprises cylinder-shaped body pipe 5, and cylinder-shaped body pipe 5 inwalls are screw-type inwall 11; Cylinder-shaped body pipe 5 is provided with the first seal closure 1 and the second seal closure 3; The second seal closure 3 is positioned at the first seal closure 1 inner side, and first and second seal closure is directly contact not, and first and second seal closure is annular seal cover, and the opening direction of first and second seal closure is identical, all points to coal petrography 14 directions when use.The cover mouth wall of first and second seal closure is tapered wall 12; To can cut easily in coal petrography 14.
Between the first seal closure 1 and the second seal closure 3, form depression shape space 2; The first seal closure 1 is provided with through hole 17, in through hole 17, be provided with note tube sealing 6, the sealing material mouth 9 that goes out of note tube sealing 6 one end is communicated with depression shape space 2, the appearance of the note sealing material mouth 8 of note tube sealing 6 other ends is provided with screw thread, note sealing material mouth 8 is provided with threaded closure caps 7, after material feeding completes, note tube sealing 6 is sealed.
The one end that is positioned at the first seal closure 1 outside on cylinder-shaped body pipe 5 is flange 10, in use away from one end of coal petrography 14; When use, apply external force by flange 10, make device be absorbed in a segment distance in coal petrography 14 walls, and then increase sealing.
When use:
The first step: after gas drilling 15 bores well, the suitable position of respectively looking for up and down at gas drilling 15 gets out the attached boring 13 of two twenty or thirties centimetre, its objective is that to make the contact surface of the sealing material that is pressed into and coal petrography 14 larger, the sealing material that infiltrates coal petrography is more.(distance of the attached boring of idea and gas drilling can not be excessive, in order to avoid hole sealing device can not be covered).
Second step: after above-mentioned attached boring 13 has been worked, device is buckled in to boring outside, and making to note tube sealing 6, to stay boring outside.Apply external force at flange 10 places with hammer or other instruments, make device be absorbed in a segment distance in coal petrography 14 walls.
The 3rd step brushes appropriate Seal Oil on gas drainage pipe 16, and is screwed in the intermediate cylindrical space 4 of this hole sealing device.
The 4th step: the threaded closure caps 7 on note sealing material mouth 8 is spun off, and high-pressure feeding machine tool is attached thereto, carry out high injection material.
The 5th step: after material feeding completes, threaded closure caps 7 is screwed.
Complete after above work, after sealing material is formed solid, can carry out methane drawing work.
By using the utility model can not only make sealing material enter coal petrography crack, good leak tightness, and after the methane drawing work of one-phase completes, while wanting methane drawing further in holing, only need, by gas drainage pipe 16 to the inner continuation of boring precession, can't destroy original sealing of hole body.Gas drainage pipe 16 is closely sealed with thread forms with the cylinder-shaped body pipe 5 of device, and contact distance is longer, good leak tightness.Carry out sealing of hole with this device in addition, lower to the requirement of sealing material, just can reach good effect with common thin cement.
More than show and described general principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and manual, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (10)
1. a hole sealing device outside new type mining gas drilling hole, is characterized in that: comprise main body tube, described main body tube inwall is screw-type inwall; Described main body tube is provided with the first seal closure; Described the first seal closure is provided with through hole.
2. hole sealing device outside new type mining gas drilling according to claim 1 hole, is characterized in that: the cover mouth wall of described the first seal closure is tapered wall.
3. hole sealing device outside new type mining gas drilling according to claim 1 hole, it is characterized in that: on described main body tube, be also provided with the second seal closure, described the second seal closure is positioned at described the first seal closure inner side, described first and second seal closure is directly contact not, and the opening direction of described first and second seal closure is identical.
4. hole sealing device outside new type mining gas drilling according to claim 3 hole, is characterized in that: the cover mouth wall of described the second seal closure is tapered wall.
5. hole sealing device outside new type mining gas drilling according to claim 3 hole, is characterized in that: described first and second seal closure is annular seal cover.
6. hole sealing device outside new type mining gas drilling according to claim 1 hole, is characterized in that: in described through hole, be provided with note tube sealing.
7. hole sealing device outside new type mining gas drilling according to claim 6 hole, is characterized in that: the port that described note tube sealing is positioned at described the first seal closure outside is provided with capping.
8. hole sealing device outside new type mining gas drilling according to claim 7 hole, is characterized in that: described capping is threaded connection with the port that is positioned at described the first seal closure outside.
9. hole sealing device outside new type mining gas drilling according to claim 1 hole, is characterized in that: described main body tube is cylinder-shaped body pipe.
10. hole sealing device outside new type mining gas drilling according to claim 1 hole, is characterized in that: the one end that is positioned at described the first seal closure outside on described main body tube is flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320888748.0U CN203685101U (en) | 2013-12-31 | 2013-12-31 | Novel gas drilling out-hole sealing device for mining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320888748.0U CN203685101U (en) | 2013-12-31 | 2013-12-31 | Novel gas drilling out-hole sealing device for mining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203685101U true CN203685101U (en) | 2014-07-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320888748.0U Expired - Fee Related CN203685101U (en) | 2013-12-31 | 2013-12-31 | Novel gas drilling out-hole sealing device for mining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203685101U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703737A (en) * | 2017-04-05 | 2017-05-24 | 河南理工大学 | Sealing plug preventing gas pressure test sealing material from overflowing |
-
2013
- 2013-12-31 CN CN201320888748.0U patent/CN203685101U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703737A (en) * | 2017-04-05 | 2017-05-24 | 河南理工大学 | Sealing plug preventing gas pressure test sealing material from overflowing |
| CN106703737B (en) * | 2017-04-05 | 2022-09-09 | 河南理工大学 | Prevent excessive shutoff stopper of gas pressure test hole sealing material |
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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: 20140702 Termination date: 20141231 |
|
| EXPY | Termination of patent right or utility model |