CN112343537A - Blowout preventer for coal mining drilling - Google Patents
Blowout preventer for coal mining drilling Download PDFInfo
- Publication number
- CN112343537A CN112343537A CN202011342690.0A CN202011342690A CN112343537A CN 112343537 A CN112343537 A CN 112343537A CN 202011342690 A CN202011342690 A CN 202011342690A CN 112343537 A CN112343537 A CN 112343537A
- Authority
- CN
- China
- Prior art keywords
- coal mining
- sleeve
- expansion
- tensioning
- coal
- 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.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 74
- 238000005065 mining Methods 0.000 title claims abstract description 52
- 238000005553 drilling Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000000428 dust Substances 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 239000011435 rock Substances 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 8
- 235000017491 Bambusa tulda Nutrition 0.000 description 8
- 241001330002 Bambuseae Species 0.000 description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 8
- 239000011425 bamboo Substances 0.000 description 8
- 239000002817 coal dust Substances 0.000 description 4
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000003818 cinder Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Images
Classifications
-
- 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)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention relates to a blowout preventer for coal mining drilling in the technical field of coal mining devices, 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 a coal mining drilling hole 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 hole wall of the. The invention has the advantages of convenient disassembly and assembly, high recycling rate, high connection strength with the coal mining drill hole, good sealing performance, integration of functions of blowout prevention, dust fall, coal discharge, water drainage and gas extraction, and contribution to ensuring the safety of a coal mining device 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 drilling.
Background
Along with the tunneling depth of a coal mining working face is larger and larger, the underground pressure is also larger and larger, gas and dust are easy to splash at a drill hole, the safety of a coal mining device and operators is affected, and particularly when hydraulic coal mining operation is adopted, water coal slag can be sprayed out from the drill hole. Therefore, there is a need for a blowout preventer for coal mining boreholes.
Disclosure of Invention
In order to solve the technical problem, the blowout preventer for coal mining drilling provided by the invention 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 a coal mining drilling hole through an expansion bolt, 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 hole, 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 penetrates through the expansion sleeve and a 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, The outside of coal mining drilling is all located to water spray dust fall tube socket, coal water let out tube socket, water spray dust fall tube socket, coal water let out tube socket and drill pipe tube socket, the drill pipe tube socket sets up with the sleeve pipe axial is concentric, the coal water let out tube socket sets up at the sheathed tube lower extreme, the sheathed tube upper end is all located to gas pump out tube socket and water spray dust fall tube socket, and the setting of water spray dust fall tube socket next-door neighbour drill pipe tube socket.
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 pull disc sleeved on the sleeve, a plurality of tensioning bolts are uniformly distributed on one side of the pull disc, the tensioning bolts are fixedly connected with the pull disc, a movable nut on the outer side of the flange disc is rotated, and the distance between the pull disc and the flange disc can be adjusted through the tensioning bolts to realize expansion and relaxation of the expansion sleeve.
Preferably, the gas drainage pipe seat, the water spraying dust falling pipe seat, the coal water discharging pipe seat and the drill pipe seat are welded on the sleeve, and the connection strength of all parts of the device is guaranteed.
Preferably, the drill pipe base is connected with the coal mining drill pipe in a sealing mode, and the sealing performance of the device is improved.
Preferably, be equipped with in the gas drainage tube socket and dismantle filter assembly, can dismantle filter assembly including straining a section of thick bamboo, filter core and strain the cover, it sets up on the gas drainage tube socket to strain a section of thick bamboo slope, the filter core is placed in straining a section of thick bamboo, strain the cover and strain a section of thick bamboo bolted connection, through setting up filter assembly, can carry out the filtering to coal dust and water droplet in the gas, help prolonging gas drainage device's life.
Preferably, a plurality of baffles are arranged on two sides of the inner wall of the gas drainage pipe seat in a staggered mode, the baffles are arranged below the filtering assembly, one end, far away from the inner wall of the gas drainage pipe seat, of each baffle inclines downwards, and an S-shaped air suction channel is formed between the baffles. Through setting up the baffle row and forming S shape bleed passage, can carry out the initial gross separation with coal cinder or water droplet smugglied secretly in the gas, be favorable to prolonging filter assembly' S life.
The invention also includes other devices or assemblies which are capable of making the blowout preventer for coal mining and drilling normally used, all by conventional means in the field, and in addition, the devices or assemblies which are not limited in the invention adopt the conventional means in the field.
The working principle of the invention is that the expansion device is adopted to realize the tension-expansion type fixation of the sleeve in the coal mining drill hole, and the inner wall and the outer wall of the expansion sleeve are respectively clung to the outer wall of the sleeve and the hole wall of the coal mining drill hole through the tension bolt and the tension piece, thereby improving the sealing property between the sleeve and the coal mining drill hole on one hand, being beneficial to ensuring the blowout prevention effect, and improving the connection strength between the sleeve and the coal mining drill hole on the other hand. The gas drainage pipe seat is used for being connected with a gas extraction device so as to extract gas in the coal mining process, the water spray dust fall pipe seat is used for being connected with a water spray pipe to realize water spray dust fall in the sleeve and prevent coal dust from escaping from the joint of the drill rod and the drill rod pipe seat, the coal water discharge pipe seat is used for being connected with a coal water discharge pipeline, excavated coal and waste water can be conveniently and timely discharged, and the drill rod pipe seat is used for being connected with the drill rod to realize efficient coal mining.
The device has the advantages of simple structure, convenience in disassembly and assembly, high recycling rate, high connection strength with the coal mining drill hole, good sealing performance, integration of functions of blowout prevention, dust fall, coal discharge, water drainage and gas extraction and contribution to ensuring the safety of the coal mining device and operators.
Drawings
The invention is further illustrated with reference to the following figures 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 structure of the G portion in fig. 1.
Detailed Description
The present invention will be described more clearly with reference to the accompanying drawings, which are included to illustrate and not to limit the present invention. All other embodiments, which can be obtained by those skilled in the art without any inventive step based on the embodiments of the present invention, should be included in the scope of the present invention.
Examples
As shown in fig. 1-2, the blowout preventer for coal mining drill holes provided by the invention comprises a sleeve 1 and an expansion device, wherein the sleeve 1 is provided with a flange 2, the flange 2 is fixed on a rock stratum 5 of a coal mining drill hole 4 through an expansion bolt 3, the expansion device comprises an expansion sleeve 6, a tension member 7 and a tension bolt 8, the expansion sleeve 6 and the tension member 7 are both arranged in the coal mining drill hole 4, a through hole for the tension bolt 8 to pass through is arranged in the expansion sleeve 6, one end of the expansion sleeve 6 is propped against the flange 2, the other end of the expansion sleeve 6 is propped against the tension member 7, one end of the tension bolt 8 is connected with the tension member 7, the other end of the tension bolt sequentially passes through the expansion sleeve 6 and the flange 2 and is in threaded connection with a movable nut 9 on the outer side of the flange 2, the tension bolt 8 is used for pulling the tension member 7 to enable the inner wall and the outer wall of the expansion sleeve 6 to be respectively clung, still be equipped with gas drainage tube socket 10, water spray dust fall tube socket 11, coal water on the sleeve pipe 1 and let out tube socket 12 and drill pipe socket 13, the outside of coal mining drilling 4 is all located to gas drainage tube socket 10, water spray dust fall tube socket 11, coal water let out tube socket 12 and drill pipe socket 13, drill pipe socket 13 sets up with 1 axial of sleeve pipe with one heart, coal water lets out tube socket 12 and sets up the lower extreme at sleeve pipe 1, sleeve pipe 1's upper end is all located to gas drainage tube socket 10 and water spray dust fall tube socket 11, and the setting of 11 tight adjacent drill pipe sockets 13 of water spray dust fall tube socket.
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 pull disc sleeved on the sleeve 1, a plurality of tensioning bolts 8 are uniformly distributed on one side of the pull disc, the tensioning bolts 8 are fixedly connected with the pull disc, movable nuts 9 on the outer side of the flange plate 2 are rotated, and the distance between the pull disc and the flange plate 2 can be adjusted through the tensioning bolts 8 to realize tensioning and loosening of the tensioning sleeve 6. The gas drainage pipe seat 10, the water spraying dust falling pipe seat 11, the coal water discharging pipe seat 12 and the drill pipe seat 13 are all welded on the casing pipe 1, and the connection strength of all parts of the device is guaranteed. The drill pipe base 13 is connected with the coal mining drill pipe in a sealing mode, and the sealing performance of the device is improved. Be equipped with in the gas drainage tube socket 10 and dismantle filter assembly, can dismantle filter assembly including straining a section of thick bamboo 14, filter core 15 and strain cover 16, strain a section of thick bamboo 14 slope and set up on gas drainage tube socket 10, filter core 15 is placed in straining a section of thick bamboo 14, strain cover 16 and strain a section of thick bamboo 14 bolted connection, through setting up filter assembly, can filter coal dust and water droplet in the gas, help prolonging gas drainage device's life. The gas drainage pipe base 10 is characterized in that a plurality of baffles 17 are arranged on two sides of the inner wall of the gas drainage pipe base 10 in a staggered mode, the baffles 17 are arranged below the filtering assembly, one end, far away from the inner wall of the gas drainage pipe base 10, of each baffle 17 inclines downwards, and an S-shaped air suction channel 18 is formed between the baffles 17. Through setting up baffle 17 row one-tenth S-shaped bleed passage 18, can carry out the initial gross separation with coal cinder or water droplet smugglied secretly in the gas, be favorable to prolonging filter assembly' S life.
The working principle of the invention is that the expansion device is adopted to realize the expansion type fixation of the casing 1 in the coal mining borehole 4, and the inner wall and the outer wall of the expansion sleeve 6 are respectively clung to the outer wall of the casing 1 and the hole wall of the coal mining borehole 4 through the tension bolt 8 and the tension piece 7, so that on one hand, the sealing property between the casing 1 and the coal mining borehole 4 is improved, the blowout prevention effect is ensured, on the other hand, the connection strength between the casing 1 and the coal mining borehole 4 is improved, and after the expansion device and the expansion bolt 3 are loosened, the casing 1 can be quickly taken out from the coal mining borehole 4, and the recovery and reutilization of the device are facilitated. The gas drainage pipe seat 10 is used for being connected with a gas extraction device so as to extract gas in the coal mining process, the water spray dust fall pipe seat 11 is used for being connected with a water spray pipe to realize water spray dust fall in the casing 1 and prevent coal dust from escaping from the connection position of the drill rod and the drill rod pipe seat 13, the coal water discharge pipe seat 12 is used for being connected with a coal water discharge pipeline and can conveniently discharge excavated coal and waste water in time, and the drill rod pipe seat 13 is used for being connected with the drill rod to realize efficient coal mining.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, 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 illustrated embodiments.
Claims (7)
1. A blowout preventer for coal mining drilling, its characterized in that: the coal mining device comprises a sleeve and an expansion device, wherein a flange plate is arranged on the sleeve, the flange plate is fixed on a rock stratum of a coal mining drill hole 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 drill hole, a through hole for the tensioning bolt to pass through is formed in the expansion sleeve, one end of the expansion sleeve is abutted against the flange plate, the other end of the expansion sleeve is abutted 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 a 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 tightly attached to the outer wall of the sleeve and the hole wall of the coal mining drill hole, a gas drainage pipe seat, a water, Coal mining drilling's outside is all located to water spray dust fall tube socket, coal water let-off tube socket and drilling rod tube socket, the drilling rod tube socket sets up with the sleeve pipe axial is concentric, the coal water let-off tube socket sets up at the sheathed tube lower extreme, sheathed tube upper end is all located to gas drainage tube socket and water spray dust fall tube socket, and the setting of water spray dust fall tube socket next-door neighbour drilling rod tube socket.
2. A blowout preventer for coal mining drilling according to claim 1, wherein the expansion sleeve is a corrugated rubber sleeve.
3. The blowout preventer for coal mining drilling according to claim 2, wherein the tension member is a pull disc sleeved on the sleeve, a plurality of tension bolts are uniformly distributed on one side of the pull disc, and the tension bolts are fixedly connected with the pull disc.
4. A blowout preventer for coal mining boreholes according to claim 1, wherein: and the gas drainage pipe seat, the water spraying dust falling pipe seat, the coal water discharging pipe seat and the drill pipe seat are welded on the sleeve.
5. A blowout preventer for coal mining boreholes according to claim 1, wherein: the drill pipe base is connected with the coal mining drill pipe in a sealing mode.
6. A blowout preventer for coal mining drilling according to any one of claims 1 to 5, wherein: the filter cartridge is characterized in that a detachable filter assembly is arranged in the gas drainage pipe base and comprises a filter cartridge, a filter element and a filter cartridge cover, the filter cartridge is obliquely arranged on the gas drainage pipe base, the filter element is arranged in the filter cartridge, and the filter cartridge cover is connected with the filter cartridge through bolts.
7. A blowout preventer for coal mining boreholes according to claim 6, wherein: the gas drainage pipe base comprises a gas drainage pipe base and is characterized in that a plurality of baffles are arranged on two sides of the inner wall of the gas drainage pipe base in a staggered mode, the baffles are arranged below the filtering assembly, one end, far away from the inner wall of the gas drainage pipe base, of each baffle inclines downwards, and an S-shaped air exhaust channel is formed between the baffles.
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 true CN112343537A (en) | 2021-02-09 |
| CN112343537B 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 |
|---|---|
| CN112343537B (en) | 2023-10-27 |
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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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