CN203822360U - Radialdrilling guide device for coal seam gas preliminary extraction hole - Google Patents
Radialdrilling guide device for coal seam gas preliminary extraction hole Download PDFInfo
- Publication number
- CN203822360U CN203822360U CN201420200955.7U CN201420200955U CN203822360U CN 203822360 U CN203822360 U CN 203822360U CN 201420200955 U CN201420200955 U CN 201420200955U CN 203822360 U CN203822360 U CN 203822360U
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- coal
- transition disc
- disk
- fixed disk
- straight
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Abstract
The utility model discloses a radial drilling guide device for a coal seam gas preliminary extraction hole. The radial drilling guide device comprises a fixed disk and a movable guide part, wherein the fixed disk is provided with mounting holes used for fixedly connecting a rock wall; angle scales are formed on the outer disk surface of the fixed disk; the movable guide part comprises a transition disk; the transition disk is coaxially connected with the outer disk surface of the fixed disk through screws; screw connecting holes formed in the transition disk are arc kidney groove-shaped; an engraved groove is formed in the outer cylindrical surface of the transition disk; a stop tongue is formed on the surface of an inner hole of the transition disk; the transition disk is in sliding fit with a guide tube through the inner hole; a guide groove which is in clearance fit with the stop tongue is formed in the outer cylindrical surface of the guide tube; the guide tube consists of a bending tube and a straight tube; the axis at the outlet of the bending tube is deflected at an included angle of 60 to 90 degrees with the axis of the straight tube. The radial drilling guide device has the benefits of simple structure and convenience in operation; when the radial drilling guide device is applied to coal seam gas preliminary extraction, an extraction roadway is not required to be tunneled, so that the coal extraction efficiency is improved.
Description
Technical field
The utility model relates to a kind of guiding device of coal mine down-hole drilling, and the pre-drainage holes of especially a kind of coal-bed gas radially creeps into guiding device.
Background technology
Coal-bed gas is a kind of clear energy sources, but for coal production a kind of disaster source especially.The coal of China is composed and is deposited complex geologic conditions, mainly relies on underground mining, and along with the increase of mining depth, coal seam gas-bearing capacity increases gradually, and coal-bed gas pressure increases, and outstanding danger increases, and protrusion-dispelling difficulty is increasing.Coal mining gas pre-drainage is to needing the region of digging laneway to carry out strip-type extraction before coal road driving.Existing extraction way is in seat earth or top board, to tunnel Yi Dichou Xiang Huodingchou lane, in Di Chou Xiang Huodingchou lane, to strip coal layer region, holes.Because this extraction way need to tunnel Di Chou Xiang Huodingchou lane, its workload is large, and tunnelling time is long, and drivage efficiency is low.For this reason, need to take out mode in advance and device improves to existing coal-bed gas.
Summary of the invention
The purpose of this utility model is the deficiency for existing drainage from coal seam technology, provide the pre-drainage holes of a kind of coal-bed gas radially to creep into guiding device, for creep into drainage holes in seat earth or top board, by this device, realize turning round of hydrojet boring and turn to, to form a plurality of branched holes on extraction trunk hole, realize strip coal layer gas pre-drainage and adopt, thereby cancel top board or base plate extraction tunnelling, reduce coal road driving preparation amount, shorten heading and tunnel time, improve coal mining efficiency.
For realizing aforementioned object, the utility model adopts following scheme.
The pre-drainage holes of coal-bed gas radially creeps into a guiding device, comprises fixed disk and activity-oriented parts, and fixed disk is provided with and the installing hole being fixedly connected with for crag, in the outer card of fixed disk, is formed with angle index; Described activity-oriented parts comprise transition disc, transition disc is coaxially connected in the outer card of described fixed disk by screw, the curved gain shape of screw connecting hole that transition disc is provided with, transition disc outer cylinder surface is provided with groove groove, is formed with gear tongue on the bore area of transition disc; Transition disc is sliding combined with guide pipe by endoporus, is formed with the gathering sill coordinating with gear tongue room on the outer cylinder surface of guide pipe; Guide pipe is comprised of bend pipe and straight tube, and the exit axis of this bend pipe and straight tube axis are the deflection of 60～90 ° of angles.
Adopt the utility model of technique scheme, during use, activity-oriented parts are arranged in the extraction trunk hole forming in seat earth or roof strata, and by fixed disk, be fixed on the aperture crag in trunk hole, activity-oriented parts radially creep into guiding for branched hole, to form the branched hole that is 60～90 ° of angles with trunk hole, by mobile straight tube, adjust bend pipe to the distance between fixed disk, to form a plurality of branched holes that distribute along trunk axially bored line, simultaneously, by rotating transition disc, bend pipe is turned an angle, with the same depth location in trunk hole, form a plurality of branched holes, to realize the object of taking out Huo Dingchou hole, hole by the alternative end of trunk drainage holes.
Preferably, on described transition disc, be fixedly connected with handle.Be convenient to transition disc to implement transposition operation.
Preferably, described straight tube is comprised of a plurality of straight lengths, the straight length adjacent with described bend pipe is welded on bend pipe, the syndeton of the end-tooth of adjacent two straight lengths by 3～6 circumference uniform distributions and the end face groove formation convex-concave complementation that coordinates with this end-tooth, in the end-tooth of adjacent two straight lengths and the section of cooperation of end face groove, by collar groove, be provided with the axle elastic collar axially connecting for the two; Described gathering sill is located on straight length.The quantity that can increase and decrease easily straight length is adjusted the distance between bend pipe and fixed disk, thereby realizes branched hole in the setting of the axial different distance in trunk hole.End-tooth can effectively prevent that adjacent straight pipeline section from mutual transposition occurring more than being set to three, to the guiding of bend pipe is effectively controlled, concrete quantity is comprehensively determined according to straight length diameter and length, be take 6 as the upper limit.
Further preferred, described straight length is positioned at clamping on the pipeline section of transition disc the pincers of embracing.Simple in structure, easy to operate, can effectively prevent that guiding parts is to slippage in hole.
The utility model beneficial effect is compared with prior art, simple in structure, easy to operate, can conveniently in drainage holes, radially creep into a plurality of branched holes; While applying to the pre-extraction of coal-bed gas, need in top board or base plate, not tunnel extraction tunnel, reduce the preparation amount of coal road driving, shorten coal road and tunnel time, improve coal mining efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the top view of the utility model Fig. 4.
Fig. 3 is straight length 5 structural representations in the utility model.
Fig. 4 is the upward view of the utility model Fig. 6.
Fig. 5 is the top view of the utility model Fig. 6.
Fig. 6 is the syndeton schematic diagram of bend pipe 4 and adjacent straight pipeline section 5 in the utility model.
Fig. 7 is the structural representation of embracing pincers 8 in the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described, but therefore the utility model is not limited among described practical range.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, the pre-drainage holes of a kind of coal-bed gas radially creeps into guiding device, it is characterized in that, comprise fixed disk 1 and activity-oriented parts, fixed disk 1 is provided with and the installing hole 11 being fixedly connected with for crag, in the outer card of fixed disk 1, be formed with angle index 12, on transition disc 2, be fixedly connected with handle 6; Described activity-oriented parts comprise transition disc 2, transition disc 2 is coaxially connected in the outer card of described fixed disk 1 by screw 3, the curved gain shape of screw connecting hole that transition disc 2 is provided with, transition disc 2 outer cylinder surfaces are provided with groove groove 21, are formed with gear tongue 22 on the bore area of transition disc 2; Transition disc 2 is sliding combined with guide pipe by endoporus, is formed with the gathering sill with gear tongue 22 matched in clearance on the outer cylinder surface of guide pipe; Guide pipe is comprised of bend pipe 4 and straight tube, and the exit axis of this bend pipe 4 and straight tube axis are the deflection of 60～90 ° of angles.Described straight tube is comprised of a plurality of straight lengths 5, the straight length 5 adjacent with described bend pipe 4 is welded on bend pipe 4, the syndeton of the end-tooth 5a of adjacent two straight lengths 5 by least three circumference uniform distributions and the end face groove 5b formation convex-concave complementation that coordinates with this end-tooth 5a, in the end-tooth 5a of adjacent two straight lengths 5 and the section of cooperation of end face groove 5b, by collar groove 5c, be provided with the elastic collar 7 for axle axially connecting for the two; Described gathering sill is located on straight length 5.Described straight length 5 is positioned at clamping on the pipeline section of transition disc 2 pincers of embracing 8.This armful pincers 8 comprise the hinged two semicircular in one end embrace folder 8a, semicircle embrace folder 8a free end be connected with two parallel handles, two handles are fixedly connected with nut by bolt 8b.
In the present embodiment, end-tooth 5a can be also three, five or six.
At the branched hole that utilizes this device to carry out extraction, carry out in drilling operation process, when needs adjustment is crept into branched hole axially and during radial position, first by the flexible medium pipeline of waterpower rig and fluid jet nozzle 4 from the straight-tube portion of guiding device, exit, then by transition disc 2 rotational angles or by increase and decrease straight length 5 conversion axial locations.
Although combine above accompanying drawing, embodiment of the present utility model has been described, but those of ordinary skill in the art also can recognize making various variations or modification in the scope of claims, these modifications and variations are interpreted as within scope of the present utility model and intention.
Claims (5)
1. the pre-drainage holes of coal-bed gas radially creeps into guiding device, it is characterized in that, comprise fixed disk (1) and activity-oriented parts, fixed disk (1) is provided with and the installing hole being fixedly connected with for crag (11), is formed with angle index (8) in the outer card of fixed disk (1); Described activity-oriented parts comprise transition disc (2), transition disc (2) is coaxially connected in the outer card of described fixed disk (1) by screw (3), the curved gain shape of screw connecting hole that transition disc (2) is provided with, transition disc (2) outer cylinder surface is provided with groove groove (21), is formed with gear tongue (22) on the bore area of transition disc (2); Transition disc (2) is sliding combined with guide pipe by endoporus, is formed with the gathering sill with gear tongue (22) matched in clearance on the outer cylinder surface of guide pipe; Guide pipe is comprised of bend pipe (4) and straight tube, and the exit axis of this bend pipe (4) and straight tube axis are the deflection of 60～90 ° of angles.
2. the pre-drainage holes of coal-bed gas according to claim 1 radially creeps into guiding device, it is characterized in that, is fixedly connected with handle (6) on described transition disc (2).
3. the pre-drainage holes of coal-bed gas according to claim 1 and 2 radially creeps into guiding device, it is characterized in that, described straight tube is comprised of a plurality of straight lengths (5), the straight length (5) adjacent with described bend pipe (4) is welded on bend pipe (4), the syndeton of the end-tooth (5a) of adjacent two straight lengths (5) by 3～6 circumference uniform distributions and end face groove (5b) the formation convex-concave complementation that coordinates with this end-tooth (5a), in the end-tooth (5a) of adjacent two straight lengths (5) and the section of cooperation of end face groove (5b), by collar groove (5c), be provided with the elastic collar for axle (7) axially connecting for the two, described gathering sill is located on straight length (5).
4. the pre-drainage holes of coal-bed gas according to claim 3 radially creeps into guiding device, it is characterized in that, described straight length (5) is positioned at clamping on the pipeline section of transition disc (2) the pincers of embracing (8).
5. the pre-drainage holes of coal-bed gas according to claim 4 radially creeps into guiding device, it is characterized in that, described armful of pincers (8) comprise that the hinged two semicircular in one end embraces folder (8a), the free end that semicircle is embraced folder (8a) is connected with two parallel handles, and two handles are fixedly connected with nut by bolt (8b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200955.7U CN203822360U (en) | 2014-04-23 | 2014-04-23 | Radialdrilling guide device for coal seam gas preliminary extraction hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200955.7U CN203822360U (en) | 2014-04-23 | 2014-04-23 | Radialdrilling guide device for coal seam gas preliminary extraction hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203822360U true CN203822360U (en) | 2014-09-10 |
Family
ID=51477874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420200955.7U Withdrawn - After Issue CN203822360U (en) | 2014-04-23 | 2014-04-23 | Radialdrilling guide device for coal seam gas preliminary extraction hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203822360U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899349A (en) * | 2014-04-23 | 2014-07-02 | 重庆市能源投资集团科技有限责任公司 | Coal seam gas extraction method and extraction hole radial drilling guide device |
| CN110374665A (en) * | 2019-07-31 | 2019-10-25 | 湖南科技大学 | A kind of gas collection device and application method for pole weak seam extraction borehole |
-
2014
- 2014-04-23 CN CN201420200955.7U patent/CN203822360U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899349A (en) * | 2014-04-23 | 2014-07-02 | 重庆市能源投资集团科技有限责任公司 | Coal seam gas extraction method and extraction hole radial drilling guide device |
| CN110374665A (en) * | 2019-07-31 | 2019-10-25 | 湖南科技大学 | A kind of gas collection device and application method for pole weak seam extraction borehole |
| CN110374665B (en) * | 2019-07-31 | 2024-03-19 | 湖南科技大学 | Gas collection device for extraction drilling of extremely soft coal seam and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140910 Effective date of abandoning: 20151209 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |