CN105507937A - Device for processing hole spraying during water jet coal seam gap cutting - Google Patents
Device for processing hole spraying during water jet coal seam gap cutting Download PDFInfo
- Publication number
- CN105507937A CN105507937A CN201510888909.XA CN201510888909A CN105507937A CN 105507937 A CN105507937 A CN 105507937A CN 201510888909 A CN201510888909 A CN 201510888909A CN 105507937 A CN105507937 A CN 105507937A
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- China
- Prior art keywords
- hole
- sealing block
- water jet
- coal seam
- sealing
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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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
Abstract
The invention discloses a device for processing hole spraying during water jet coal seam gap cutting. The device comprises a hole sealing device, a hole sealing capsule wrapping the periphery of the hole sealing device and a buffer sealing device with an inner cavity. A gap which can be filled with water is arranged between the hole sealing capsule and the outer wall of the hole sealing device. One end of the buffer sealing device is connected with the hole sealing device, and the other end thereof is provided with a sealing block which can be opened towards two sides. Sealing rubber matched with a drill stem is arranged in the sealing block. A first gas hose for discharging gas is arranged at the upper end of the buffer sealing device. A gas, water and slag separating tank is connected to the lower end of the buffer sealing device through a thick hose. The device has the advantages that during high-pressure water jet gap cutting permeability increasing, the device can effectively collect coal slag, gas and waste water sprayed from drilled holes when hole spraying occurs, the collected coal slag, gas and waste water are separated through the separating tank, gas concentration in a roadway is reduced, and life safety of workers and smooth coal mining are guaranteed; the device is simple in structure, light, simple to operate and worthy of application.
Description
Technical field
The present invention relates to coal bed gas drainage and control field, be specifically related to a kind of water jet coal seam cutting spray orifice treating apparatus.
Background technology
For a long time, the fatal rate of coal mine gas explosion remains high, and gas is the principal element affecting Safety of Coal Mine Production all the time.And along with the increase of mining depth, gas pressure and gas bearing capacity constantly increase, Gas Disaster will show in more obvious mode.Therefore, before coal mining, utilize high-pressure water jet slot in coal seam to be widely used to form gap network strengthening gas pumping method.In high-pressure water jet slot process, the unstability in coal seam and the factor such as contingent bit freezing, armful brill can make the mixture, high pressure gas etc. of cinder and water in slot along gushing of holing and be interrupted.Spray orifice causes gas density in tunnel sharply to raise, and when going beyond the limit, very easily causes the disasters such as gas explosion; In addition, the enormous impact pressure that spray orifice produces can cause water and cinder to cover on rig, shortens machine working life, affects operating efficiency; And water and cinder are trickled down in tunnel, not only affect workman's operating condition but also great threat is constituted to life security.
When carrying out high-pressure water jet coal seam slot, outside diameter used is 113mm, and drilling rod external diameter used is 73mm, and boring internal diameter is about 115mm.In order to assurance device can insert in boring smoothly, and guarantee can draining deslagging smoothly, and designed device needs external diameter to be less than 115mm, and internal diameter is greater than 90mm.Therefore the pipe thickness of device more than 12mm, and can not can be fastened in hole enormous impact when also can bear spray orifice, and this is the Focal point and difficult point place of spray orifice Treatment process.
Application number is that the patent of invention of CN201210546985 discloses a kind of safety device anti-reflection for water jet slot and method.This device can be prevented and treated spray orifice under less pressure, but the concrete structure of hole packer and buffer is not described, in addition, when there is spray orifice, the cinder sprayed from holing, water, gas have very large surge, and the fixing means of this device does not possess the condition of normal work in such a case.Application number is that the patent of invention " air water slag separation integrated apparatus " of CN201110271198 discloses the air water slag separation integrated apparatus preventing gas exceeding limit, dust harzard in the construction of a kind of extraction borehole.This covering device is applied in extraction borehole work progress, be mainly used in the separation to air water slag, and this device is former in extraction borehole construction, there is many problems: hole packer tube wall is thicker for high-pressure water jet slot this device of constructing, external diameter reaches 160mm, needs the multiple tracks techniques such as secondary drilling; Buffer hermetic unit is an entirety, causes step in installing drill rod bit process various, and formality is complicated; And hole packer and buffer weight are comparatively large, about 30 kilograms, labor's carrying and installation process is extremely required great effort.In use there is many problems in this device.
Also there is no at present simple, convenient light and handy, the convenient operation of a kind of structure and movement and the spray orifice phenomenon that can produce in the anti-reflection operation process of high-pressure water jet slot carries out the device effectively administered.
Summary of the invention
The object of the invention is to solve the technical problem existing for prior art; Thus provide one and be applicable in the anti-reflection process of high-pressure water jet coal seam slot, to a kind of device that spray orifice is administered.
Technical scheme of the present invention is: a kind of water jet coal seam cutting spray orifice treating apparatus, comprise inner hollow to hold the hole packer of drilling rod, be coated on the sealing of hole capsule of hole packer periphery and the inner cushion seal device for cavity structure, being provided with between described sealing of hole capsule and hole packer outer wall can the space of water-filling, described space is provided with the pipeline of water-filling, described cushion seal device one end is connected with hole packer, the other end is provided with the sealing block can opened to both sides, the caulking gum coordinated with drilling rod is provided with in described sealing block, ensure the cinder of boring ejection, gas and waste water can not leak in tunnel along with drilling rod, described cushion seal device upper end is provided with the gas hose one of firedamp drainage, cushion seal device lower end is provided with the air water slag knockout drum be connected by thick flexible pipe.
As preferably, the pipe thickness scope of the hole packer of described a kind of water jet coal seam cutting spray orifice treating apparatus is 10 ~ 12mm, and hole packer external diametrical extent is 112 ~ 115mm, and the inside diameter ranges of hole packer is 90 ~ 92mm.
As preferably, the sealing block of described a kind of water jet coal seam cutting spray orifice treating apparatus is divided into left sealing block and right sealing block, described left sealing block is fixedly connected on cushion seal device, described right sealing block lower end is connected with left sealing block lower end by turning joint, and upper end utilizes bolt and left sealing block upper end to fix.
As preferably, the air water slag knockout drum top of described a kind of water jet coal seam cutting spray orifice treating apparatus is provided with the gas hose two for firedamp drainage, and be provided with two-stage sieve aperture strainer in air water slag knockout drum, bottom is provided with drainage pipe.
As preferably, the sealing of hole capsule of described a kind of water jet coal seam cutting spray orifice treating apparatus is without steel wire devulcanized rubber flexible pipe, makes the sealing effectiveness of sealing of hole capsule better.
As preferably, be equipped with the limited step of seal and fixing seals position between the two ends, sealing of hole capsule left and right of described a kind of water jet coal seam cutting spray orifice treating apparatus and hole packer outer wall, prevent the water in sealing of hole capsule from leaking because pressure is excessive.
Its principle is: in the anti-reflection construction of coal seam high-pressure water jet slot, coal seam middle and high concentration gas, water under high pressure and cinder can be poured out by drilling-rod external wall annular space, mixture can arrive cushion seal device with larger speed along hole packer endoporus, now sealing of hole capsule is in swelling state under the pressure of water, and hole packer and cushion seal device are fastened on aperture place.Caulking gum in sealing block and drilling rod close contact, prevent mixture from gushing out and arrive tunnel.In cushion seal device, mixture carries out initial gross separation, the gas of a part enters gas drainage pipe along with upper pipe, tail gas and water and cinder mixture enter air water slag knockout drum, air water slag knockout drum Neva stone is crossed top flexible pipe and is carried out secondary separation and enter gas drainage pipe, water is separated by two-stage sieve aperture strainer with cinder, and water enters drainage pipe by bottom, and cinder enters cinder car by shining net from outlet.Thus the separation completed the gentle grain slag of the control of spray orifice.
The beneficial effect that the present invention has is: in the anti-reflection construction of high-pressure water jet slot, this invention can when spray orifice occurs, the cinder of boring ejection, gas, waste water are effectively collected, and be separated by follow-up separator, thus effectively prevent a series of harm that spray orifice brings, reduce gas, dust concentration in tunnel, ensure the life security of workman and carrying out smoothly of coal mining.Through practical proof, gas collection rate reaches more than 90%, greatly eliminates potential safety hazard, and waste water, waste residue collection rate are more than 95%, provide reliable guarantee to work plane construction safety.Hole packer adopts and imbeds ductway, and make the pipe thickness of hole packer be reduced to 10mm, whole device external diameter is 112mm, and internal diameter is 92mm, successfully solves an above-mentioned size difficult problem; Cushion seal device adopts movable sealing mode, decreases required step when drill bit penetrates; Adopt manual hydraulic pressure mode to make hole sealing glue tube swelling, can keep fastening under the impact of a large amount of gas, water and cinder; Sebific duct adopts position limiting sealed mode, and sebific duct swell diameter can be made to become large, and be conducive to stablizing of hole packer fastening, effective carries out good improvement to spray orifice; Weight of the present invention is extremely light, is about 5 kilograms, and structure is simple, and easy to operate, easy to maintenance, low cost of manufacture, can be applied in the anti-reflection construction of water jet slot widely.
Accompanying drawing explanation
Accompanying drawing 1 is the overall structure figure of the embodiment of the present invention.
Accompanying drawing 2 is hole packer part-structure figure of the embodiment of the present invention.
Accompanying drawing 3 is hole packer A-A cross-section structures of the embodiment of the present invention.
Accompanying drawing 4 is cushion seal device structure chart and the right view of the embodiment of the present invention.
In figure, cushion seal device 1, hole packer 2, by flexible pipe 3, hand-operated valve 4, gas hose 1, tunnel gas drainage pipe 6, gas hose 27, air water slag knockout drum 8, drainage pipe 9, thick flexible pipe 10, hollow structure 11, tube wall 12, limited step 13, seal 14, space 15, sealing of hole capsule 16, seal 17, pipeline 18, water swivel 19, flange 20, groove 21, fine steel tube 22, expansion tube 23, fixing hole 24, caulking gum 25, turning joint 26, left sealing block 28, right sealing block 27.
Detailed description of the invention
Below in conjunction with accompanying drawing and concrete embodiment, the present invention will be further described.
A kind of water jet coal seam cutting spray orifice controlling device comprise hole packer 2, by flexible pipe 3 be positioned at hand-operated valve 4 that water swivel 20 on hole packer 2 is connected, one end and hole packer 2 with bolted cushion seal device 1; Described cushion seal device 1 upper end is provided with gas hose 1 and is communicated with tunnel gas drainage pipe 6, and lower end is provided with thick flexible pipe 10 and is communicated with air water slag knockout drum 8; Described air water slag knockout drum 8 top is provided with gas hose 27 and is communicated with tunnel gas drainage pipe 6, and be provided with two-stage sieve aperture strainer in air water slag knockout drum 8, bottom is communicated with drainage pipe 9.
Be provided with hollow structure 11 in hole packer 2, to hold drilling rod turnover, comprise tube wall 12, the sealing of hole capsule 16 be coated on tube wall 12; Described sealing of hole capsule about 16 two ends are respectively equipped with seal 14 and seal 17, described seal 14 and all restricted limited step 13 with fixing its position of seal 17, there is space 15 between sealing of hole capsule 16 and tube wall 12 in order to hold water, and then sealing of hole capsule 16 is expanded; The pipeline 18 connecting space 15 and water swivel 19 is provided with bottom described limited step 13; Described water swivel 19 is welded on tube wall 12; Described hole packer 2 right-hand member is provided with flange 20 and is connected with cushion seal device 1; Described pipeline 18 is that fine steel tube 22 is placed in groove 21, and to be welded and fixed; Connection space 15, the fine steel tube 22 one end other end is communicated with bottom water swivel 19, welded seal; Be provided with expansion tube 23 in the middle part of described cushion seal device 1, right-hand member is provided with the sealing block can opened to both sides, described sealing block is divided into left sealing block 28 and right sealing block 27, the caulking gum 25 with drilling rod close contact, anti-sealing and gas leakage is provided with in described sealing block; Described left sealing block 28 is welded on cushion seal device 1, and right sealing block 27 one end is connected with left sealing block 28 by turning joint 26, and utilizes bolt to fix in fixing hole 24.
Sealing of hole capsule 16 is without steel wire devulcanized rubber flexible pipe.
Bottom groove 21 and bore distance between 3-5mm.
Cushion seal device 1 right wall perforate size should be slightly less than sealing block, and sealing block 28 can be made to be welded in You Bishang, can be convenient to drill bit and pass through.
As preferably, the pipe thickness scope of described hole packer 2 is 10 ~ 12mm, and hole packer 2 external diametrical extent is 112 ~ 115mm, and the inside diameter ranges of hole packer 2 is 90 ~ 92mm.
The using method of a kind of water jet coal seam cutting of this embodiment spray orifice controlling device is:
A, the present invention to be connected successively according to graphic technique, by cushion seal device 1 rear seal block separately;
B, to be inserted by hole packer 2 in the boring of accomplishing fluently in advance, make sealing of hole capsule 16 all in immersed hole, in sealing of hole capsule 16, pass into water, pressurization, makes it to be fastened in hole;
C, by rig, cutter and drilling rod are goed deep in hole by cushion seal device 1, make cutter arrive predetermined slot position, lock sealing block, carry out the anti-reflection operation of high-pressure water jet slot;
D, operation are complete, open sealing block, extract drilling rod and cutter out, and hydraulic pressure in release sealing of hole capsule 16, extracts hole packer 2 out and carry out next step operation.
It will be appreciated by those of ordinary skill in the art that embodiment described here is to help reader understanding's principle of the present invention, should be understood to that protection scope of the present invention is not limited to so special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combination of not departing from essence of the present invention according to these technology enlightenment disclosed by the invention, and these distortion and combination are still in protection scope of the present invention.
Claims (6)
1. a water jet coal seam cutting spray orifice treating apparatus, it is characterized in that: comprise inner hollow to hold the hole packer (2) of drilling rod, be coated on the peripheral sealing of hole capsule (16) of hole packer (2) and the inner cushion seal device (1) for cavity structure, being provided with between described sealing of hole capsule (16) and hole packer (2) outer wall can the space (15) of water-filling, described space (15) is provided with the pipeline (18) of water-filling, described cushion seal device (1) one end is connected with hole packer (2), the other end is provided with the sealing block can opened to both sides, the caulking gum (25) coordinated with drilling rod is provided with in described sealing block, described cushion seal device (1) upper end is provided with the gas hose one (5) of firedamp drainage, cushion seal device (1) lower end is provided with the air water slag knockout drum (8) be connected by thick flexible pipe (10).
2. a kind of water jet coal seam cutting spray orifice treating apparatus as claimed in claim 1, it is characterized in that: the pipe thickness scope of described hole packer (2) is 10 ~ 12mm, hole packer (2) external diametrical extent is 112 ~ 115mm, and the inside diameter ranges of hole packer (2) is 90 ~ 92mm.
3. a kind of water jet coal seam cutting spray orifice treating apparatus as claimed in claim 2, it is characterized in that: described sealing block is divided into left sealing block (28) and right sealing block (27), described left sealing block (28) is fixedly connected on cushion seal device (1), described right sealing block (27) lower end is connected with left sealing block (28) lower end by turning joint (26), and upper end utilizes bolt and left sealing block (28) upper end to fix.
4. a kind of water jet coal seam cutting spray orifice treating apparatus as claimed in claim 3, it is characterized in that: described air water slag knockout drum (8) top is provided with the gas hose two (7) for firedamp drainage, be provided with two-stage sieve aperture strainer in air water slag knockout drum (8), bottom is provided with drainage pipe (9).
5. a kind of water jet coal seam cutting spray orifice treating apparatus as claimed in claim 4, is characterized in that: described sealing of hole capsule (16) is for without steel wire devulcanized rubber flexible pipe.
6. a kind of water jet coal seam cutting spray orifice treating apparatus as claimed in claim 5, is characterized in that: the limited step (13) being equipped with seal (14) and fixing seals (14) position between described sealing of hole capsule (16) two ends, left and right and hole packer (2) outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510888909.XA CN105507937B (en) | 2015-12-07 | 2015-12-07 | A kind of water jet coal seam cutting spray orifice processing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510888909.XA CN105507937B (en) | 2015-12-07 | 2015-12-07 | A kind of water jet coal seam cutting spray orifice processing unit |
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| Publication Number | Publication Date |
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| CN105507937A true CN105507937A (en) | 2016-04-20 |
| CN105507937B CN105507937B (en) | 2018-01-23 |
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| CN201510888909.XA Active CN105507937B (en) | 2015-12-07 | 2015-12-07 | A kind of water jet coal seam cutting spray orifice processing unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108362853A (en) * | 2018-02-08 | 2018-08-03 | 重庆大学 | A kind of coal containing methane gas ultra-high pressure water fluid jet slot analog simulation system and method |
| CN110761770A (en) * | 2019-12-04 | 2020-02-07 | 西安科技大学 | Novel mine slag-water-gas three-phase separation device |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108362853A (en) * | 2018-02-08 | 2018-08-03 | 重庆大学 | A kind of coal containing methane gas ultra-high pressure water fluid jet slot analog simulation system and method |
| CN110761770A (en) * | 2019-12-04 | 2020-02-07 | 西安科技大学 | Novel mine slag-water-gas three-phase separation device |
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| Publication number | Publication date |
|---|---|
| CN105507937B (en) | 2018-01-23 |
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