CN112343537B - Blowout preventer for coal mining and drilling - Google Patents
Blowout preventer for coal mining and drilling Download PDFInfo
- Publication number
- CN112343537B CN112343537B CN202011342690.0A CN202011342690A CN112343537B CN 112343537 B CN112343537 B CN 112343537B CN 202011342690 A CN202011342690 A CN 202011342690A CN 112343537 B CN112343537 B CN 112343537B
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- CN
- China
- Prior art keywords
- sleeve
- tension
- coal mining
- seat
- tube seat
- Prior art date
- 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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- 239000003245 coal Substances 0.000 title claims abstract description 72
- 238000005065 mining Methods 0.000 title claims abstract description 49
- 238000005553 drilling Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000005507 spraying Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000000605 extraction Methods 0.000 claims abstract description 5
- 239000011435 rock Substances 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 230000002265 prevention Effects 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000002817 coal dust Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000003818 cinder Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention relates to a blowout preventer for coal mining drilling, which comprises a sleeve and an expansion device, wherein the sleeve is provided with a flange plate, the flange plate is fixed on a rock stratum of the coal mining drilling through an expansion bolt, the expansion device comprises an expansion sleeve, a tensioning piece and a tensioning bolt, one end of the expansion sleeve is propped against the flange plate, the other end of the expansion sleeve is propped against the tensioning piece, one end of the tensioning bolt is connected with the tensioning piece, the other end of the tensioning bolt sequentially penetrates through the expansion sleeve and the flange plate and is in threaded connection with a movable nut on the outer side of the flange plate, the tensioning bolt is used for pulling the tensioning piece to enable the inner wall and the outer wall of the expansion sleeve to be respectively clung to the outer wall of the sleeve and the wall of the coal mining drilling, and a gas drainage tube seat, a water spraying dust fall tube seat, a coal water discharge tube seat and a drill stem seat are further arranged on the sleeve. The invention has the advantages of convenient disassembly and assembly, high recycling rate, high connection strength with coal mining holes and good sealing performance, integrates the functions of blowout prevention, dust fall, coal discharge, water discharge and gas extraction, and is beneficial to ensuring the safety of coal mining devices and operators.
Description
Technical Field
The invention belongs to the technical field of coal mining devices, and particularly relates to a blowout preventer for coal mining and drilling.
Background
Along with the increasing tunneling depth of the coal mining working face, the underground pressure is also increased, gas and dust are easy to splash at the drilling position, the safety of a coal mining device and operators is affected, and water cinder is also caused to be sprayed out from the drilling position particularly when hydraulic coal mining operation is adopted. It is therefore necessary to design a blowout preventer for coal mining drilling.
Disclosure of Invention
In order to solve the technical problems, the blowout preventer for coal mining drilling holes comprises a sleeve and an expansion device, wherein the sleeve is provided with a flange plate, the flange plate is fixed on a rock stratum of the coal mining drilling holes through expansion bolts, the expansion device comprises an expansion sleeve, a tensioning piece and a tensioning bolt, the expansion sleeve and the tensioning piece are arranged in the coal mining drilling holes, a through hole for the tensioning bolt to pass through is formed in the expansion sleeve, one end of the expansion sleeve is propped against the flange plate, the other end of the expansion sleeve is propped against the tensioning piece, one end of the tensioning bolt is connected with the tensioning piece, the other end of the tensioning bolt sequentially passes through the expansion sleeve and the flange plate and is in threaded connection with a movable nut at the outer side of the flange plate, the tensioning bolt is used for pulling the tensioning piece to enable the inner wall and the outer wall of the expansion sleeve to be respectively clung to the outer wall of the sleeve and the wall of the coal mining drilling hole, the sleeve is further provided with a gas drainage tube seat, a water spraying dust-settling tube seat, a coal water discharging tube seat and a drill rod tube seat, the gas drainage tube seat, the water spraying dust-settling tube seat, the coal water discharging tube seat and the drill rod tube seat are all arranged on the outer side of the coal mining drilling hole, the drill rod tube seat and the sleeve are axially and concentrically arranged, the coal water discharging tube seat is arranged at the lower end of the sleeve, the gas drainage tube seat and the water spraying dust-settling tube seat are all arranged at the upper end of the sleeve, and the water spraying dust-settling tube seat is arranged next to the drill rod tube seat.
Preferably, the expansion sleeve is a corrugated rubber sleeve, so that the expansion sleeve is convenient to manufacture and good in sealing performance.
Preferably, the tensioning piece is a pulling disc sleeved on the sleeve, a plurality of tensioning bolts are uniformly distributed on one side of the pulling disc, the tensioning bolts are fixedly connected with the pulling disc, the movable nuts on the outer side of the flange disc are screwed, and the distance between the pulling disc and the flange disc can be adjusted through the tensioning bolts, so that the expansion and the relaxation of the expansion sleeve are realized.
Preferably, the gas drainage tube seat, the water spraying dust fall tube seat, the coal water discharging tube seat and the drill rod tube seat are welded on the sleeve, so that the connection strength of all parts of the device is guaranteed.
Preferably, the drill rod tube seat is in sealing connection with the coal mining drill rod, so that the sealing performance of the device is improved.
Preferably, the detachable filter assembly is arranged in the gas drainage tube seat and comprises a filter tube, a filter element and a filter tube cover, the filter tube is obliquely arranged on the gas drainage tube seat, the filter element is placed in the filter tube, the filter tube cover is connected with the filter tube through bolts, and coal dust and water drops in the gas can be filtered through the filter assembly, so that the service life of the gas drainage device is prolonged.
Preferably, a plurality of baffles are alternately arranged on two sides of the inner wall of the gas drainage tube seat, the baffles are arranged below the filtering assembly, one end, away from the inner wall of the gas drainage tube seat, of each baffle is inclined downwards, and S-shaped air extraction channels are formed between the baffles. The baffle plate is arranged to form the S-shaped air exhaust channel, so that coal blocks or water drops entrained in the gas can be primarily separated, and the service life of the filtering component can be prolonged.
The invention also comprises other devices or components which can enable the blowout preventer for coal mining and drilling to be used normally, and the devices or components are all conventional in the art.
The invention adopts the working principle that the expansion device is adopted to realize the pull-expansion type fixation of the sleeve in the coal mining borehole, and the inner wall and the outer wall of the expansion sleeve are respectively clung to the outer wall of the sleeve and the wall of the coal mining borehole through the tension bolt and the tension piece, so that on one hand, the tightness between the sleeve and the coal mining borehole is improved, the blowout prevention effect is ensured, on the other hand, the connection strength between the sleeve and the coal mining borehole is improved, and after the expansion device and the expansion bolt are loosened, the sleeve can be quickly taken out from the coal mining borehole, thereby being beneficial to the recycling of the device. The gas drainage tube seat is used for being connected with a gas drainage device so as to drain gas in the coal mining process, the water spraying dust fall tube seat is used for being connected with a water spraying tube, water spraying dust fall in the sleeve is realized, coal dust is prevented from escaping from the joint of the drill rod and the drill rod tube seat, the coal water leakage tube seat is used for being connected with a coal water discharge pipeline, the extracted coal and waste water can be conveniently discharged in time, and the drill rod tube seat is used for being connected with the drill rod, so that efficient coal mining is realized.
The device has the beneficial effects of simple structure, convenient disassembly and assembly, high recycling rate, high connection strength with coal mining holes and good sealing performance, integrates the functions of blowout prevention, dust fall, coal discharge, water discharge and gas extraction, and is beneficial to guaranteeing the safety of the coal mining device and operators.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic view of the overall structure of the present invention in the embodiment.
Fig. 2 is a partially enlarged schematic view of the G portion structure in fig. 1.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown, and in which embodiments of the invention are shown. All other embodiments, modifications, equivalents, improvements, etc., which are apparent to those skilled in the art without the benefit of this disclosure, are intended to be included within the scope of this invention.
Examples
As shown in fig. 1-2, the blowout preventer for coal mining and drilling provided by the invention comprises a sleeve 1 and a tension device, wherein a flange plate 2 is arranged on the sleeve 1, the flange plate 2 is fixed on a rock stratum 5 of the coal mining and drilling hole 4 through an expansion bolt 3, the tension device comprises a tension sleeve 6, a tension member 7 and a tension bolt 8, the tension sleeve 6 and the tension member 7 are both arranged in the coal mining and drilling hole 4, a through hole for the tension bolt 8 to pass through is formed in the tension sleeve 6, one end of the tension sleeve 6 is propped against the flange plate 2, the other end is propped against the tension member 7, one end of the tension bolt 8 is connected with the tension member 7, the other end sequentially passes through the tension sleeve 6 and the flange plate 2 and is in threaded connection with a movable nut 9 outside the flange plate 2, the tension bolt 8 is used for pulling the tension member 7 to enable the inner wall and the outer wall of the tension sleeve 6 to be respectively clung to the outer wall of the sleeve 1 and the wall of the coal mining and the wall of the drilling hole 4, a gas drainage tube seat 10, a gas drainage tube seat 11, a gas drainage tube seat 12 and a coal drainage tube seat 13 are further arranged on the sleeve 1, a water drainage tube seat 12 and a water drainage tube seat 13 are arranged on the sleeve 1, the water drainage tube seat 11 and the water drainage tube seat 11 are arranged on the water drainage tube seat 11 and the water drainage tube seat 13, and the water drainage tube seat 11 is arranged on the water drainage tube seat 11 and the water drainage tube seat 11, and is arranged on the water drainage tube seat 11 and is arranged on the coal hole seat 1 and is provided on the coal hole seat, and is provided with the hole.
The expansion sleeve 6 is a corrugated rubber sleeve, and is convenient to manufacture and good in sealing performance. The tensioning piece 7 is a pulling disc sleeved on the sleeve 1, a plurality of tensioning bolts 8 are uniformly distributed on one side of the pulling disc, the tensioning bolts 8 are fixedly connected with the pulling disc, a movable nut 9 on the outer side of the flange 2 is screwed, and the distance between the pulling disc and the flange 2 can be adjusted through the tensioning bolts 8, so that the expansion and the relaxation of the expansion sleeve 6 are realized. The gas drainage tube seat 10, the water spraying dust fall tube seat 11, the coal water discharging tube seat 12 and the drill rod tube seat 13 are all welded on the sleeve 1, so that the connection strength of all parts of the device is guaranteed. The drill stem seat 13 is in sealing connection with the coal mining drill stem, and the sealing performance of the device is improved. The detachable filter assembly is arranged in the gas drainage tube seat 10 and comprises a filter tube 14, a filter element 15 and a filter tube cover 16, the filter tube 14 is obliquely arranged on the gas drainage tube seat 10, the filter element 15 is placed in the filter tube 14, the filter tube cover 16 is connected with the filter tube 14 through bolts, and coal dust and water drops in gas can be filtered through the filter assembly, so that the service life of the gas drainage device is prolonged. A plurality of baffles 17 are arranged on two sides of the inner wall of the gas drainage tube seat 10 in a staggered manner, the baffles 17 are arranged below the filter assembly, one end, far away from the inner wall of the gas drainage tube seat 10, of each baffle 17 is inclined downwards, and S-shaped air extraction channels 18 are formed between the baffles 17. The baffle 17 is arranged to form the S-shaped air suction channel 18, so that coal blocks or water drops entrained in the gas can be primarily separated, and the service life of the filter assembly can be prolonged.
The invention adopts the working principle that the expansion device is adopted to realize the pull-expansion type fixation of the sleeve 1 in the coal mining drilling hole 4, and the inner wall and the outer wall of the expansion sleeve 6 are respectively clung to the outer wall of the sleeve 1 and the wall of the coal mining drilling hole 4 through the tension bolt 8 and the tension piece 7, so that on one hand, the tightness between the sleeve 1 and the coal mining drilling hole 4 is improved, the blowout prevention effect is ensured, on the other hand, the connection strength between the sleeve 1 and the coal mining drilling hole 4 is improved, and after the expansion device and the expansion bolt 3 are loosened, the sleeve 1 can be quickly taken out from the coal mining drilling hole 4, thereby being beneficial to the recycling of the device. The gas drainage tube seat 10 is used for being connected with a gas drainage device so as to drain gas in the coal mining process, the water spraying dust fall tube seat 11 is used for being connected with a water spraying tube, water spraying dust fall in the sleeve 1 is realized, coal dust is prevented from escaping from the joint of the drill rod and the drill rod tube seat 13, the coal water is discharged out of the tube seat 12 and is used for being connected with a coal water discharging pipeline, the extracted coal and waste water can be conveniently discharged out in time, and the drill rod tube seat 13 is used for being connected with the drill rod, so that efficient coal mining is realized.
The embodiments of the present invention have been described above, the description is illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (3)
1. A blowout preventer for coal mining drilling, its characterized in that: the tension sleeve comprises a sleeve and a tension device, wherein the sleeve is provided with a flange, the flange is fixed on a rock stratum of a coal mining drilling hole through an expansion bolt, the tension device comprises a tension sleeve, a tension member and a tension bolt, the tension sleeve is a corrugated rubber sleeve, the tension sleeve and the tension member are both arranged in the coal mining drilling hole, a through hole for the tension bolt to pass through is formed in the tension sleeve, one end of the tension sleeve is propped against the flange, the other end of the tension sleeve is propped against the tension member, one end of the tension bolt is connected with the tension member, the other end of the tension bolt sequentially passes through the tension sleeve and the flange and is in threaded connection with a movable nut on the outer side of the flange, the tension bolt is used for pulling the tension member to enable the inner wall and the outer wall of the tension sleeve to be respectively clung to the outer wall of the sleeve and the wall of the coal mining drilling hole, the tension member is a tension disc sleeved on the sleeve, and a plurality of tension bolts are uniformly distributed on one side of the tension disc and are fixedly connected with the tension disc; the casing is also provided with a gas drainage pipe seat, a water spraying dust-settling pipe seat, a coal water discharging pipe seat and a drill pipe seat, wherein the gas drainage pipe seat, the water spraying dust-settling pipe seat, the coal water discharging pipe seat and the drill pipe seat are all arranged on the outer side of a coal mining drill hole, the drill pipe seat and the casing are axially and concentrically arranged, the coal water discharging pipe seat is arranged at the lower end of the casing, the gas drainage pipe seat and the water spraying dust-settling pipe seat are both arranged at the upper end of the casing, and the water spraying dust-settling pipe seat is arranged close to the drill pipe seat; the gas drainage tube seat is internally provided with a detachable filter assembly, the detachable filter assembly comprises a filter tube, a filter element and a filter tube cover, the filter tube is obliquely arranged on the gas drainage tube seat, the filter element is placed in the filter tube, and the filter tube cover is connected with the filter tube through a bolt; the gas drainage tube seat is characterized in that a plurality of baffles are arranged on two sides of the inner wall of the gas drainage tube seat in a staggered mode, the baffles are arranged below the filtering assembly, one end, away from the inner wall of the gas drainage tube seat, of each baffle is inclined downwards, and S-shaped air extraction channels are formed between the baffles.
2. A blowout preventer for coal mining and drilling according to claim 1, wherein: the gas drainage tube seat, the water spraying dust-reducing tube seat, the coal water discharging tube seat and the drill rod tube seat are welded on the sleeve.
3. A blowout preventer for coal mining and drilling according to claim 1, wherein: and the drill rod tube seat is in sealing connection with the coal mining drill rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011342690.0A CN112343537B (en) | 2020-11-26 | 2020-11-26 | Blowout preventer for coal mining and drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011342690.0A CN112343537B (en) | 2020-11-26 | 2020-11-26 | Blowout preventer for coal mining and drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112343537A CN112343537A (en) | 2021-02-09 |
| CN112343537B true CN112343537B (en) | 2023-10-27 |
Family
ID=74365642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011342690.0A Active CN112343537B (en) | 2020-11-26 | 2020-11-26 | Blowout preventer for coal mining and drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112343537B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4480842A (en) * | 1983-06-27 | 1984-11-06 | Anil Mahyera | Self-aligning stuffing box |
| CN2930039Y (en) * | 2006-11-27 | 2007-08-01 | 陈怀民 | Spring pipeline blocking part |
| CN202176355U (en) * | 2011-08-17 | 2012-03-28 | 安徽恒源煤电股份有限公司祁东煤矿 | Coal mine downhole drilling hole dust-reducing device |
| CN103537146A (en) * | 2012-07-16 | 2014-01-29 | 安徽恒源煤电股份有限公司 | Slag removal device for gas pipeline |
| CN206053989U (en) * | 2016-09-13 | 2017-03-29 | 卢泉生 | A kind of combination closure draining coal seam gas device |
-
2020
- 2020-11-26 CN CN202011342690.0A patent/CN112343537B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4480842A (en) * | 1983-06-27 | 1984-11-06 | Anil Mahyera | Self-aligning stuffing box |
| CN2930039Y (en) * | 2006-11-27 | 2007-08-01 | 陈怀民 | Spring pipeline blocking part |
| CN202176355U (en) * | 2011-08-17 | 2012-03-28 | 安徽恒源煤电股份有限公司祁东煤矿 | Coal mine downhole drilling hole dust-reducing device |
| CN103537146A (en) * | 2012-07-16 | 2014-01-29 | 安徽恒源煤电股份有限公司 | Slag removal device for gas pipeline |
| CN206053989U (en) * | 2016-09-13 | 2017-03-29 | 卢泉生 | A kind of combination closure draining coal seam gas device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112343537A (en) | 2021-02-09 |
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Effective date of registration: 20230919 Address after: 454000 No. 2001 Century Avenue, hi tech Zone, Henan, Jiaozuo Applicant after: HENAN POLYTECHNIC University Applicant after: SHANGHAI INSTITUTE OF TECHNOLOGY Address before: 454000 No. 2001 Century Avenue, hi tech Zone, Henan, Jiaozuo Applicant before: HENAN POLYTECHNIC University |
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