CN115199317B - Device and method for preventing overrun water, gas and slag separation during underground coal mine drilling - Google Patents
Device and method for preventing overrun water, gas and slag separation during underground coal mine drilling Download PDFInfo
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- CN115199317B CN115199317B CN202210831957.5A CN202210831957A CN115199317B CN 115199317 B CN115199317 B CN 115199317B CN 202210831957 A CN202210831957 A CN 202210831957A CN 115199317 B CN115199317 B CN 115199317B
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- 238000000926 separation method Methods 0.000 title claims abstract description 80
- 239000007789 gas Substances 0.000 title claims abstract description 73
- 239000002893 slag Substances 0.000 title claims abstract description 61
- 239000003245 coal Substances 0.000 title claims abstract description 45
- 238000005553 drilling Methods 0.000 title claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims description 12
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 238000000605 extraction Methods 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims abstract description 13
- 239000003818 cinder Substances 0.000 claims description 19
- 239000002351 wastewater Substances 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 9
- 230000003139 buffering effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 6
- 238000001125 extrusion Methods 0.000 claims 1
- 230000006837 decompression Effects 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B5/00—Other centrifuges
- B04B5/10—Centrifuges combined with other apparatus, e.g. electrostatic separators; Sets or systems of several centrifuges
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses an anti-overrun water, gas and slag separation device for underground drilling of a coal mine, which comprises an outer sealing seat, wherein the concentric sealing of the outer sealing seat is embedded and fixed at a drilling hole opening, and one side of the outer sealing seat is fixedly locked with a flow-limiting separation component through a bolt; the lower end of the flow-limiting separation assembly is communicated with the water-gas-slag separation device through a slag discharging pipe, coal slag generated in the hole is sunk at the water-gas-slag separation device through the water-gas-slag separation device, and the water discharging end of the water-gas-slag separation device is communicated with a temporary water sump through a water discharging pipe; one side of the current-limiting separation assembly is also provided with a centralized extractor, each air inlet on the centralized extractor is communicated with an extraction pipe, and a pneumatic buffer assembly is further arranged on the extraction pipe and connected between the current-limiting separation assembly and the water-gas-slag separation device.
Description
Technical Field
The invention belongs to the technical field of coal mine safety production equipment, and particularly relates to an anti-overrun water gas-slag separation device and method for underground drilling of a coal mine.
Background
Drilling extraction is one of effective methods for controlling coal mine gas disasters, in recent years, with development of coal mine mechanized equipment, a drilling machine is generally suitable for high-gas and outstanding coal mines, however, problems of large hole gas emission, gas concentration overrun and the like frequently occur when underground drilling, and serious threat is caused to coal mine safety production.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides the following technical solutions: the underground coal mine drilling overrun-preventing water, gas and slag separation device comprises an outer sealing seat, wherein the outer sealing seat is concentrically, hermetically embedded and fixed at a drilling hole opening, and one side of the outer sealing seat is fixedly locked with a flow-limiting separation assembly through a bolt; the lower end of the flow-limiting separation assembly is communicated with the water-gas-slag separation device through a slag discharging pipe, coal slag generated in the hole is sunk at the water-gas-slag separation device through the water-gas-slag separation device, and the water discharging end of the water-gas-slag separation device is communicated with a temporary water sump through a water discharging pipe;
one side of the flow-limiting separation assembly is also provided with a centralized extractor, each air inlet on the centralized extractor is communicated with an extraction pipe, and the other end of each extraction pipe is correspondingly connected to the water-gas-slag separation device and the flow-limiting separation assembly;
the extraction pipe connected between the flow-limiting separation assembly and the centralized extractor is also provided with a pneumatic buffer assembly, and the pneumatic buffer assembly can reduce the gas discharge pressure in an expanded state so that the gas slowly enters the centralized extractor;
the exhaust port of the centralized extractor is also connected with a gas collecting pipe through a valve.
Further, as an optimization, the flow-limiting separation assembly comprises an orifice tee joint, the orifice tee joint is in sealing fit with one side of the outer sealing seat, the front section of the orifice tee joint is used as a drill rod advancing and retreating channel, a threaded sleeve is concentrically arranged in the orifice tee joint in a rotating mode, the threaded sleeve is arranged outside a drill rod, a miniature motor is arranged on the orifice tee joint, the output end of the miniature motor is in transmission connection with the threaded sleeve through a gear meshing effect, a flow-limiting column is arranged in the orifice tee joint in a limiting sliding mode, and one end of the flow-limiting column is arranged in the threaded sleeve in a sliding mode through the thread meshing effect; the lower part of the orifice tee joint is also communicated with a fixed bin.
Further, preferably, the cross section of the flow limiting column is in a three-section structure, and the cross section of one end close to the drilling hole is smaller than the cross section of one end far away from the drilling hole.
Further, preferably, a filter cartridge is rotatably arranged in the fixed bin, one end of the filter cartridge is rotatably connected below the orifice tee, the slag discharging pipe is communicated with the filter cartridge, an outer ring bin is communicated below the fixed bin, and one end of the outer ring bin is communicated with a drainage seat;
and the filter cylinder is also vertically provided with an internal connecting pipe, a plurality of collecting seats are arranged on the internal connecting pipe, and the upper end of the internal connecting pipe is communicated with the extraction pipe through a transfer pipe.
Further, preferably, the air pressure buffer assembly includes a first pressure reducing device and a second pressure reducing device, one end of the first pressure reducing device is communicated with the second pressure reducing device through an external connection pipe, and one ends of the first pressure reducing device and the second pressure reducing device are connected with branch pipe fittings, and the branch pipe fittings are communicated with the centralized extractor.
Further, as an optimization, the first pressure reducing device and the second pressure reducing device have the same composition structure and jointly comprise an outer connecting bin, a connecting pipe is transversely fixed in the outer connecting bin, a plurality of sieve holes are formed in the connecting pipe, and a buffer bag is sleeved outside the connecting pipe in the outer connecting bin;
and a separation plate is further arranged in the outer connecting bin, and the buffer bag is sealed and attached to the separation plate.
Further, preferably, one side of the outer connecting bin is communicated with an air pressure pipe, and one end of the air pressure pipe is communicated with an outer air pump.
Further, preferably, a plurality of guide seats are circumferentially arranged on the outer connecting bin, side shaft frames are arranged on the guide seats in a relatively deflectable manner, the side shaft frames are driven to deflect by a rotating disc arranged on the guide seats, and one end of each side shaft frame is further provided with a squeezing wheel.
The application method of the underground coal mine drilling overrun-preventing water, gas and slag separation device comprises the following steps:
step 1: drilling and installing; an outer sealing seat is embedded and installed at a drilling hole, and a hole tee joint is locked and matched on one side of the outer sealing seat;
step 2: preliminary flow-limiting discharging; the length of the flow-limiting column extending into the orifice tee joint is adjusted by the rotation action of the threaded sleeve, at the moment, the flow-limiting column can locally limit the section of the flow outlet, coal slag, partial gas and waste water generated by drilling enter the water-gas-slag separation device through the lower end of the orifice tee joint, and most gas enters the centralized extractor through the air pressure buffer assembly in the rising process;
step 3: gas drainage; the coal cinder, partial gas and waste water generated by drilling can be centrifugally separated under the rotation action of the filter cartridge, at the moment, the gas is spirally concentrated in the middle of the filter cartridge, and a collecting seat on the interconnecting pipe can correspondingly pump and discharge the gas into a pumping pipe positioned at the upper end of the orifice tee;
step 4: air pressure buffering, wherein gas in the holes enters the first pressure reducing device and the second pressure reducing device through the orifice tee joint, so that buffering bags in the first pressure reducing device and the second pressure reducing device expand and slowly enter the centralized extractor;
step 5: separating the precipitate; the coal cinder is precipitated in the water-gas-slag separation device, the gas in the water-gas-slag separation device enters the centralized extractor through the extraction pipe, meanwhile, the wastewater enters the temporary sump, and the coal cinder is manually shoveled out by a spade after being precipitated, so that the separation of the coal cinder, the gas and the wastewater is finally realized.
Compared with the prior art, the invention has the beneficial effects that:
after the outer sealing seat is sealed, embedded and fixed at the hole opening of the drill hole, the flow-limiting separation assembly can perform primary flow-limiting discharge on coal cinder, partial gas and wastewater generated by drilling; and be provided with first vacuum apparatus and second vacuum apparatus, first vacuum apparatus and second vacuum apparatus can independently or synchronous work, especially when gas gushes out in a large number, downthehole gas gets into the buffering bag through the drill way tee bend, makes buffering bag inflation to slowly get into concentrated extractor, thereby avoided the gas to release in the drill way a large amount, cause drill way gas overrun.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a flow restricting separator assembly according to the present invention;
FIG. 3 is a schematic view of the structure of the fixed bin of the invention;
FIG. 4 is a schematic view of a pneumatic buffer assembly according to the present invention;
FIG. 5 is a schematic view of a first pressure relief device according to the present invention;
in the figure: the device comprises an outer sealing seat 1, an extraction pipe 11, a slag discharging pipe 12, a water-gas-slag separation device 13, a temporary water bin 14, a gas collecting pipe 15, an extraction device 16, a flow limiting separation assembly 2, a port tee joint 21, a thread sleeve 22, a flow limiting column 23, a pneumatic buffer assembly 3, an outer connecting pipe 31, a pipe fitting 32, a fixed bin 4, a filter cylinder 41, an outer ring bin 42, a collecting seat 43, a discharge seat 44, a switching pipe 45, a first pressure reducing device 5, an outer connecting bin 51, a connecting pipe 52, a partition plate 53, a buffer bag 54, a pneumatic pipe 55, a guide seat 56, a side shaft frame 57, a compression wheel 58 and a pressure reducing device 6.
Detailed Description
Referring to fig. 1, in the embodiment of the invention, an anti-overrun water, gas and slag separating device for underground drilling of a coal mine comprises an outer sealing seat 1, wherein the outer sealing seat 1 is concentrically, hermetically embedded and fixed at a drilling hole opening, and one side of the outer sealing seat 1 is fixedly locked with a flow limiting separating component 2 through a bolt; the lower end of the flow-limiting separation assembly 2 is communicated with a water-gas-slag separation device 13 through a slag discharge pipe 12, coal slag generated in holes is sunk at the water-gas-slag separation device 13 by the water-gas-slag separation device 13, and the water discharge end of the water-gas-slag separation device 13 is communicated with a temporary water bin 14 through a water discharge pipe;
one side of the flow-limiting separation assembly 2 is also provided with a centralized extractor 16, each air inlet on the centralized extractor 16 is communicated with an extraction pipe 11, and the other end of each extraction pipe 11 is correspondingly connected to the water-gas-slag separation device 13 and the flow-limiting separation assembly 2;
the extraction pipe 11 connected between the flow-limiting separation assembly 2 and the centralized extractor 16 is also provided with a pneumatic buffer assembly 3, and the pneumatic buffer assembly 3 can reduce the gas discharge pressure in an expanded state so that the gas slowly enters the centralized extractor 16;
the gas outlet of the centralized extractor is also connected with the gas collecting pipe 15 through a valve, that is, coal cinder generated in the hole during drilling is sunk at the water-gas-slag separation device, waste water enters the temporary water sump, gas enters the centralized extractor, coal cinder is manually shoveled out by a shovel, finally, coal cinder, gas and waste water separation is realized, the flow-limiting separation assembly can conduct primary flow-limiting at the hole opening, and then the air pressure buffer assembly timely absorbs and decompresses a large amount of gas abnormally gushed out in the hole during drilling, so that the gas overrun of the hole opening is avoided.
In this embodiment, the flow-limiting separation assembly 2 includes an orifice tee 21, the orifice tee 21 is in sealing fit with one side of the external sealing seat 1, and the front section thereof is used as a drill rod advancing and retreating channel, a threaded sleeve 22 is concentrically arranged in the orifice tee 21 in a rotating manner, the threaded sleeve is arranged outside the drill rod, a micro motor 24 is arranged on the orifice tee 21, the output end of the micro motor 24 is in transmission connection with the threaded sleeve 22 through a gear meshing effect, a flow-limiting column 23 is also arranged in the orifice tee 21 in a limiting sliding manner, and one end of the flow-limiting column 23 is arranged in the threaded sleeve 22 in a sliding manner through a thread meshing effect; the lower part of the orifice tee 21 is also communicated with a fixed bin 4.
As a preferred embodiment, the cross section of the flow-limiting column 23 is in a three-section structure, and the cross section of one end close to the drill hole is smaller than the cross section of one end far away from the drill hole, that is, the relative extending length of the flow-limiting column is adjusted so that different flow-limiting works can be performed by the three sections of the flow-limiting column, thereby effectively avoiding excessive surging of cinder, gas and the like in the drilling process.
In this embodiment, a filter cartridge 41 is rotatably disposed in the fixed bin 4, one end of the filter cartridge 41 is rotatably connected below the orifice tee 21, the slag discharging pipe 12 is communicated with the filter cartridge 41, an outer ring bin 42 is communicated with the lower part in the fixed bin 4, and one end of the outer ring bin 42 is communicated with a drainage seat 44;
and still vertically be provided with the interior connecting tube in the section of thick bamboo 41, it is provided with a plurality of collector seats 43 to arrange on the connecting tube, the upper end of interior connecting tube pass through transfer pipe 45 with take out and be linked together with take out and adopt pipe 11, especially filter cartridge under the rotatory effect can be to the preliminary centrifugal separation of coal cinder, partial gas, the waste water that drilling produced to make gas spiral concentrate in the section of thick bamboo middle part, be discharged it by the collector seat with its correspondence this moment, further improve aqueous vapor sediment separation effect.
In this embodiment, the air pressure buffer assembly 3 includes a first pressure reducing device 5 and a second pressure reducing device 6, one end of the first pressure reducing device 5 is communicated with the second pressure reducing device 6 through an external connection pipe 31, one ends of the first pressure reducing device 5 and the second pressure reducing device 6 are connected with a branch pipe piece 32, and the branch pipe piece 32 is communicated with the centralized extractor 16, and the first pressure reducing device and the second pressure reducing device can work independently or synchronously, so as to improve the gas carrying capacity.
In this embodiment, the first pressure reducing device 5 and the second pressure reducing device 6 have the same composition structure and include an outer connecting bin 51, a connecting pipe 52 is transversely fixed in the outer connecting bin 51, a plurality of sieve holes are formed in the connecting pipe 52, and a buffer bag 54 is sleeved outside the connecting pipe in the outer connecting bin 51;
the outer connecting bin 51 is also internally provided with a separation plate 53, and the buffer bag 54 is sealed and attached to the separation plate 53.
As a preferred embodiment, one side of the outer connecting bin 51 is communicated with an air pressure pipe 55, one end of the air pressure pipe 55 is communicated with an outer air pump (not shown in the figure), that is, the partition plate can divide the outer connecting bin into two chambers left and right, when the outer air pump is in a working state, the air in the chamber at one side of the outer connecting bin can be discharged through the air pressure pipe, so that the buffer bag can be actively inflated, and an active absorption and decompression effect can be achieved; particularly, when the gas is abnormally flushed, the first pressure reducing device can actively absorb the pressure reducing operation, the second pressure reducing device correspondingly performs the passive pressure reducing operation (namely, the external air pump is not operated), if the gas discharge pressure in the external connecting pipe is still higher than the normal value, the second pressure reducing device synchronously performs the active pressure reducing operation, and if the gas discharge pressure in the external connecting pipe is lower than the warning value, the air pressure pipe can slowly deflate at the moment, so that the elasticity of the buffering bag is recovered.
In this embodiment, a plurality of guide holders 56 are circumferentially disposed on the outer connecting bin 51, side shaft brackets 57 are disposed on the guide holders 56 and can deflect relatively, the side shaft brackets 57 are driven to deflect by a rotating disc mounted on the guide holders 56, one end of each side shaft bracket 57 is further provided with a squeezing wheel 58 for squeezing and exhausting one end of the buffer bag after the first decompression device or the second decompression device is decompressed, so that gas exhausting is assisted and accelerated, in particular, the side shaft brackets are intermittently laterally squeezed under the rotation action of the guide holders, so that the gas in the buffer bag is controlled to be exhausted to the connecting pipe at a low speed, and at the moment, the gas and the gas are originally conveyed to be converged in the connecting pipe, and the safety is lower than a pressure warning value and higher.
The application method of the underground coal mine drilling overrun-preventing water, gas and slag separation device comprises the following steps:
step 1: drilling and installing; an outer sealing seat 1 is embedded and installed at a drilling hole, and a hole tee joint 21 is in locking fit with one side of the outer sealing seat 1;
step 2: preliminary flow-limiting discharging; the length of the flow limiting column 23 which relatively extends into the orifice tee joint 21 is adjusted through the rotation action of the threaded sleeve 22, at the moment, the flow limiting column 23 can locally limit the cross section of a drainage orifice, coal slag, partial gas and waste water generated by drilling enter the water-gas-slag separation device 13 through the lower end of the orifice tee joint 21, and most gas enters the centralized extractor 16 through the air pressure buffer assembly 3 in rising;
step 3: gas drainage; the coal cinder, partial gas and waste water generated by drilling can be centrifugally separated under the rotation action of the filter cartridge 41, at the moment, the gas is spirally concentrated in the middle part of the filter cartridge 41, and the collecting seat 43 on the interconnecting pipe can correspondingly pump and discharge the gas into the extraction pipe 11 positioned at the upper end of the orifice tee 21; the gas separation can be effectively carried out;
step 4: the gas in the holes enters the first pressure reducing device 5 and the second pressure reducing device 6 through the orifice tee joint 21, so that the buffer bags 54 in the first pressure reducing device 5 and the second pressure reducing device 6 are expanded and slowly enter the centralized extractor 16, and the safety is high;
step 5: separating the precipitate; coal cinder is precipitated in the water-gas-slag separation device 13, gas in the water-gas-slag separation device 13 enters the centralized extractor 16 through the extraction pipe 11, meanwhile, wastewater enters the temporary water sump 14, and after the coal cinder is precipitated, the coal cinder is manually shoveled out by a shovel, so that the separation of the coal cinder, the gas and the wastewater is finally realized.
In particular, the method comprises the steps of,
the foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. An anti-overrun water gas-slag separation device for underground drilling of a coal mine is characterized in that: the device comprises an outer sealing seat (1), wherein the outer sealing seat (1) is concentrically, hermetically, embedded and fixed at a drilling hole opening, and one side of the outer sealing seat (1) is fixedly locked with a current-limiting separation assembly (2) through a bolt; the lower end of the flow-limiting separation assembly (2) is communicated with the water-gas-slag separation device (13) through a slag discharge pipe (12), coal slag generated in holes is sunk at the water-gas-slag separation device (13) through the water-gas-slag separation device (13), and the water discharge end of the water-gas-slag separation device (13) is communicated with the temporary water bin (14) through a water discharge pipe;
one side of the flow-limiting separation assembly (2) is also provided with a centralized extractor (16), each air inlet on the centralized extractor (16) is communicated with an extraction pipe (11), and the other end of each extraction pipe (11) is correspondingly connected to the water-gas-slag separation device (13) and the flow-limiting separation assembly (2);
the extraction pipe (11) connected between the flow-limiting separation assembly (2) and the centralized extractor (16) is also provided with a pneumatic buffer assembly (3), and the pneumatic buffer assembly (3) can reduce the gas discharge pressure in an expanded state so that gas slowly enters the centralized extractor (16);
the exhaust port of the centralized extractor (16) is also connected with a gas collecting pipe (15) through a valve;
the air pressure buffer assembly (3) comprises a first pressure reducing device (5) and a second pressure reducing device (6), one end of the first pressure reducing device (5) is communicated with the second pressure reducing device (6) through an outer connecting pipe (31), one ends of the first pressure reducing device (5) and the second pressure reducing device (6) are connected with branch pipe pieces (32), and the branch pipe pieces (32) are communicated with the centralized extractor (16);
the first pressure reducing device (5) and the second pressure reducing device (6) have the same composition structure and jointly comprise an outer connecting bin (51), a connecting pipe (52) is transversely fixed in the outer connecting bin (51), a plurality of sieve holes are formed in the connecting pipe (52), and a buffer bag (54) is sleeved outside the connecting pipe in the outer connecting bin (51);
a separation plate (53) is further arranged in the outer connecting bin (51), and the buffer bag (54) is sealed and attached to the separation plate (53);
one side of the outer connecting bin (51) is communicated with an air pressure pipe (55), and one end of the air pressure pipe (55) is communicated with an outer air pump.
2. The underground coal mine drilling overrun-preventing water, gas and slag separation device according to claim 1, wherein: the flow-limiting separation assembly (2) comprises an orifice tee joint (21), the orifice tee joint (21) is in sealing fit with one side of the outer sealing seat (1), the front section of the orifice tee joint is used as a drill rod advancing and retreating channel, a threaded sleeve (22) is concentrically arranged in the orifice tee joint (21) in a rotating mode, the threaded sleeve is arranged outside a drill rod, a micro motor (24) is arranged on the orifice tee joint (21), the output end of the micro motor (24) is connected with the threaded sleeve (22) through a gear meshing effect for transmission, a flow-limiting column (23) is further arranged in the orifice tee joint (21) in a limiting sliding mode, and one end of the flow-limiting column (23) is arranged in the threaded sleeve (22) in a sliding mode through a thread meshing effect; the lower part of the orifice tee joint (21) is also communicated with a fixed bin (4).
3. The underground coal mine drilling overrun preventing water, gas and slag separating device according to claim 2, wherein: the cross section of the flow limiting column (23) is of a three-section structure, and the cross section of one end close to the drilling hole is smaller than the cross section of one end far away from the drilling hole.
4. The underground coal mine drilling overrun preventing water, gas and slag separating device according to claim 2, wherein: a filter cylinder (41) is arranged in the fixed bin (4) in a relatively rotatable manner, one end of the filter cylinder (41) is rotationally connected below the orifice tee joint (21), the slag discharging pipe (12) is communicated with the filter cylinder (41), an outer ring bin (42) is communicated with the lower part in the fixed bin (4), and a drainage seat (44) is communicated with one end of the outer ring bin (42);
and an inner connecting pipe is further vertically arranged in the filter cylinder (41), a plurality of collecting seats (43) are arranged on the inner connecting pipe, and the upper end of the inner connecting pipe is communicated with the extraction pipe (11) through a transfer pipe (45).
5. The underground coal mine drilling overrun-preventing water, gas and slag separation device according to claim 1, wherein: the circumference is provided with a plurality of guide holders (56) on outer connection storehouse (51), all can be provided with side pedestal (57) of relative deflection on guide holder (56), side pedestal (57) are by installing the rotary disk drive deflection of guide holder (56), the one end of side pedestal (57) still is equipped with extrusion wheel (58).
6. The application method of the underground coal mine drilling anti-overrun water-gas-slag separation device is characterized in that the underground coal mine drilling anti-overrun water-gas-slag separation device is adopted, and is characterized in that: the method comprises the following steps:
step 1: drilling and installing; an outer sealing seat (1) is embedded and installed at a drilling hole, and a hole tee joint (21) is in locking fit with one side of the outer sealing seat (1);
step 2: preliminary flow-limiting discharging; the length of the flow limiting column (23) which relatively extends into the orifice tee joint (21) is adjusted through the rotation action of the threaded sleeve (22), at the moment, the flow limiting column (23) can locally limit the section of the drainage orifice, coal slag, partial gas and waste water generated by drilling enter the water-gas-slag separation device (13) through the lower end of the orifice tee joint (21), and most gas enters the centralized extractor (16) through the air pressure buffer assembly (3) in the rising process;
step 3: gas drainage; the coal cinder, partial gas and waste water generated by drilling can be centrifugally separated under the rotation action of the filter cartridge (41), at the moment, the gas is spirally concentrated in the middle part of the filter cartridge (41), and the collecting seat (43) on the interconnecting pipe can correspondingly pump and discharge the gas into the extraction pipe (11) positioned at the upper end of the orifice tee (21);
step 4: the gas in the hole enters the first pressure reducing device (5) and the second pressure reducing device (6) through the orifice tee joint (21) in a pneumatic buffering way, so that a buffering bag (54) in the first pressure reducing device (5) and the second pressure reducing device (6) is expanded and slowly enters the centralized extractor (16);
step 5: separating the precipitate; coal cinder is precipitated in the water-gas-slag separation device (13), gas in the water-gas-slag separation device (13) enters the centralized extractor (16) through the extraction pipe (11), meanwhile, wastewater enters the temporary water sump (14), and after the coal cinder is precipitated, a shovel is manually adopted to scoop out, so that the separation of the coal cinder, the gas and the wastewater is finally realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210831957.5A CN115199317B (en) | 2022-07-14 | 2022-07-14 | Device and method for preventing overrun water, gas and slag separation during underground coal mine drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210831957.5A CN115199317B (en) | 2022-07-14 | 2022-07-14 | Device and method for preventing overrun water, gas and slag separation during underground coal mine drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115199317A CN115199317A (en) | 2022-10-18 |
| CN115199317B true CN115199317B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210831957.5A Active CN115199317B (en) | 2022-07-14 | 2022-07-14 | Device and method for preventing overrun water, gas and slag separation during underground coal mine drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115199317B (en) |
Citations (10)
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