CN115199317A - Device and method for preventing overrun-proof water-gas-slag separation during underground drilling of coal mine - Google Patents
Device and method for preventing overrun-proof water-gas-slag separation during underground drilling of coal mine Download PDFInfo
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- CN115199317A CN115199317A CN202210831957.5A CN202210831957A CN115199317A CN 115199317 A CN115199317 A CN 115199317A CN 202210831957 A CN202210831957 A CN 202210831957A CN 115199317 A CN115199317 A CN 115199317A
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- 239000002893 slag Substances 0.000 title claims abstract description 80
- 238000000926 separation method Methods 0.000 title claims abstract description 64
- 239000003245 coal Substances 0.000 title claims abstract description 43
- 238000005553 drilling Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims description 10
- 238000000605 extraction Methods 0.000 claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000003139 buffering effect Effects 0.000 claims abstract description 11
- 239000002351 wastewater Substances 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 4
- 230000001174 ascending effect Effects 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 239000013049 sediment Substances 0.000 claims description 2
- 239000003818 cinder Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
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- 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
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- 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
- 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
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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
- E21F16/00—Drainage
Abstract
The invention discloses an overrun-preventing water-gas-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, and one side of the outer sealing seat is locked and fixed with a flow limiting separation assembly through a bolt; the lower end of the flow-limiting separation component is communicated with the water-gas-slag separation device through a slag discharge 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 discharge end of the water-gas-slag separation device is communicated with the temporary sump through a water discharge pipe; one side of the flow-limiting separation assembly is also provided with a centralized extraction device, each air inlet on the centralized extraction device is communicated with an extraction pipe, and an air pressure buffering assembly is also arranged on the extraction pipe connected between the flow-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 overrun-preventing water-gas-slag separation device and method for underground drilling of a coal mine.
Background
In recent years, with the development of mechanized equipment of coal mines, drilling machines are generally suitable for high-gas outburst coal mines, however, problems of large gas emission at orifices, gas concentration overrun and the like frequently occur in underground drilling, and serious threats are caused to safe production of coal mines.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: the device comprises an outer sealing seat, wherein the concentric sealing embedding of the outer sealing seat is fixed at the hole of a drill hole, and a limited flow separation assembly is fixed on one side of the outer sealing seat through a bolt lock; the lower end of the flow-limiting separation component is communicated with the water-gas-slag separation device through a slag discharge 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 discharge end of the water-gas-slag separation device is communicated with the temporary sump through a water discharge pipe;
one side of the flow-limiting separation component is also provided with a centralized extraction device, each air inlet on the centralized extraction device 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 component;
the gas extraction pipe connected between the flow-limiting separation assembly and the water-gas-slag separation device is also provided with an air pressure buffer assembly, and the air pressure buffer assembly can reduce gas discharge pressure in an expansion state so as to slowly enter the centralized gas extractor;
and the exhaust port of the centralized extraction device is also connected with the gas collecting pipe through a valve.
Further, preferably, 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 arranged in the orifice tee joint in a concentric rotation mode, the threaded sleeve is arranged outside a drill rod in a sleeved mode, a micro motor is arranged on the orifice tee joint, the output end of the micro motor is connected with the threaded sleeve through gear meshing for transmission, 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; and a fixed bin is communicated below the orifice tee.
Preferably, the cross section of the flow limiting column is of a three-section structure, and the cross section of one end close to the drill hole is smaller than that of the other end far away from the drill hole.
Further, preferably, a filter cylinder is arranged in the fixed bin in a relatively rotatable manner, one end of the filter cylinder is rotatably connected below the orifice tee, the slag discharge pipe is communicated with the filter cylinder, an outer ring bin is communicated with the lower part in the fixed bin, and one end of the outer ring bin is communicated with a drainage seat;
and an inner connecting pipe is vertically arranged in the filter cylinder, a plurality of collecting seats are arranged on the inner connecting pipe, and the upper end of the inner connecting pipe is communicated with the extraction pipe through a switching pipe.
Further, preferably, the air pressure buffering assembly comprises 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 connecting pipe, and one ends of the first pressure reducing device and the second pressure reducing device are both connected with a branch pipe fitting which is communicated with the centralized extraction device.
Further, preferably, the first pressure reducing device and the second pressure reducing device have the same composition structure and jointly comprise an external connection bin, a connecting pipe is transversely fixed in the external connection bin, a plurality of sieve pores are arranged on the connecting pipe, and a buffer bag is sleeved outside the connecting pipe in the external connection bin;
still be equipped with the division board in the external connection storehouse, the sealed laminating of buffering bag is in on the division board.
Further, preferably, one side of the external connection bin is communicated with an air pressure pipe, and one end of the air pressure pipe is communicated with an external air pump.
Preferably, the outer connecting bin is circumferentially provided with a plurality of guide seats, each guide seat is provided with a side shaft bracket capable of deflecting relatively, the side shaft brackets are driven to deflect by a rotating disk arranged on the guide seats, and one end of each side shaft bracket is further provided with an extrusion wheel.
A use method of an overrun-preventing water-gas-slag separation device for underground drilling of a coal mine comprises the following steps:
step 1: drilling and installing; an outer sealing seat is embedded and installed at the hole opening of the drilling hole, and the hole opening tee joint is in locking fit with one side of the outer sealing seat at the moment;
step 2: preliminary flow-limiting discharge; the length of the flow-limiting column which relatively seeps into the orifice tee joint is adjusted through the rotation effect of the threaded sleeve, at the moment, the flow-limiting column can perform local flow limitation on the cross section of the drainage port, 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 of the gas enters the centralized extraction device through the air pressure buffer assembly in ascending;
and step 3: gas is pumped and discharged; coal slag, partial gas and waste water generated by drilling can be centrifugally separated under the rotation action of the filter cylinder, at the moment, the gas is spirally concentrated in the middle of the filter cylinder, and the gas 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 joint;
and 4, step 4: buffering the air pressure, wherein the gas in the hole enters a first pressure reducing device and a second pressure reducing device through an orifice tee joint, so that a buffering bag in the first pressure reducing device and the second pressure reducing device is expanded and slowly enters a centralized extraction device;
and 5: separating the precipitate; the coal slag is precipitated in the water-gas-slag separating device, gas in the water-gas-slag separating device enters the centralized extraction device through the extraction pipe, meanwhile, the waste water enters the temporary sump, and after the coal slag is precipitated, a shovel is manually adopted to shovel the coal slag, the gas and the waste water, and finally, the separation of the coal slag, the gas and the waste water is realized.
Compared with the prior art, the invention has the beneficial effects that:
after the outer sealing seat is embedded and fixed at the hole of the drilling hole in a sealing manner, the flow-limiting separation assembly can perform primary flow-limiting discharge on coal slag, partial gas and waste water generated by drilling; and the first pressure reducing device and the second pressure reducing device can work independently or synchronously, and especially when gas is gushed out in large quantity, gas in a hole enters the buffer bag through the orifice tee joint, so that the buffer bag expands and slowly enters the centralized extraction device, and therefore the phenomenon that the gas in the orifice is released in large quantity to cause the gas in the orifice to exceed the limit is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a flow-restricting separator assembly according to the present invention;
FIG. 3 is a schematic structural view of a fixed bin according to the present invention;
FIG. 4 is a schematic view of the pneumatic buffer assembly of 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 discharge pipe 12, a water-gas-slag separation device 13, a temporary water sump 14, a gas collecting pipe 15, an extraction device 16, a flow-limiting separation component 2, a 21-orifice tee joint, a 22-thread sleeve, a 23-flow-limiting column, a 3-air-pressure buffer component, an external connecting pipe 31, a pipe fitting 32, a fixed bin 4, a filter cartridge 41, an outer annular bin 42, a flow-collecting seat 43, a flow discharge seat 44, a switching pipe 45, a first pressure reducing device 5, an external connecting bin 51, a connecting pipe 52, a 53 isolating plate, a buffer bag 54, an air-pressure pipe 55, a guide seat 56, a shaft bracket 57 side, an extrusion wheel 58 and a pressure reducing device 6.
Detailed Description
Referring to fig. 1, in the embodiment of the invention, an overrun-preventing water-gas-slag separation device for underground drilling of a coal mine comprises an outer sealing seat 1, wherein the outer sealing seat 1 is concentrically embedded and fixed at a drilling hole in a sealing manner, and a flow-limiting separation assembly 2 is locked and fixed on one side of the outer sealing seat 1 through a bolt; the lower end of the flow-limiting separation component 2 is communicated with a water-gas-slag separation device 13 through a slag discharge pipe 12, coal slag generated in a hole 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 a temporary water sump 14 through a water discharge pipe;
a centralized extraction device 16 is further arranged on one side of the flow-limiting separation component 2, extraction pipes 11 are communicated with air inlets of the centralized extraction device 16, and the other ends of the extraction pipes 11 are correspondingly connected to the water-gas-slag separation device 13 and the flow-limiting separation component 2;
the gas extraction pipe 11 connected between the flow-limiting separation component 2 and the water-gas-slag separation device 13 is also provided with a gas pressure buffer component 3, and the gas pressure buffer component 3 can reduce gas discharge pressure in an expansion state so as to slowly enter the centralized gas extractor 16;
the gas vent of concentrating the drainage ware still is connected with gas collecting pipe 15 through the valve, that is to say, the cinder that produces in the drilling time sinks at aqueous vapor sediment separator department, and waste water gets into interim sump, and gas gets into concentrating the drainage ware, and the manual shovel of cinder is shoveled out with the shovel, finally realizes cinder, gas, waste water separation, and the current-limiting separation subassembly can carry out preliminary current limiting in drill way department, and the gas that in a large amount of abnormalities were gushed out in the drilling process is in time absorbed the decompression by atmospheric pressure buffering subassembly again to avoid drill way gas to transfinite.
In this embodiment, the flow-limiting separation assembly 2 includes an orifice tee 21, the orifice tee 21 is hermetically fitted on one side of the outer seal seat 1, and the front section of the orifice tee 21 serves as a drill rod advancing and retreating channel, a threaded sleeve 22 is rotatably arranged concentrically in the orifice tee 21, the threaded sleeve is sleeved outside a drill rod, a micro motor 24 is arranged on the orifice tee 21, the output end of the micro motor 24 is connected and driven with the threaded sleeve 22 through a gear meshing effect, a flow-limiting column 23 is further arranged in the orifice tee 21 in a limiting sliding manner, and one end of the flow-limiting column 23 is slidably arranged in the threaded sleeve 22 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 a three-section structure, and the cross section of one end close to the drill hole is smaller than that of the other end far away from the drill hole, that is, the three sections of the flow-limiting column are used for performing different flow-limiting operations by adjusting the relative extension length of the flow-limiting column, so that the excessive emission of coal slag, gas and the like in the drilling process is effectively avoided.
In this embodiment, a filter cartridge 41 is relatively rotatably disposed in the fixed bin 4, one end of the filter cartridge 41 is rotatably connected below the orifice tee 21, the slag discharge pipe 12 is communicated with the filter cartridge 41, an outer annular bin 42 is communicated with the lower portion of the fixed bin 4, and one end of the outer annular bin 42 is communicated with a drainage seat 44;
an inner connecting pipe is vertically arranged in the filter cylinder 42, a plurality of collecting seats 43 are arranged on the inner connecting pipe, the upper end of the inner connecting pipe is communicated with the extraction pipe 11 through an adapter pipe 45, especially, the filter cylinder under the rotation action can carry out preliminary centrifugal separation on coal cinder, partial gas and waste water generated by drilling, the gas is spirally concentrated in the middle of the filter cylinder, and at the moment, the gas is correspondingly arranged upwards through a drainage seat, so that the water-gas-slag separation effect is further improved.
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 both connected with a branch pipe 32, the branch pipe 32 is communicated with the centralized extraction device 16, and the first pressure reducing device and the second pressure reducing device can work independently or synchronously, so that the gas carrying capacity is improved.
In this embodiment, the first pressure reducer 5 and the second pressure reducer 6 have the same composition structure, and together include an external connection bin 51, a connection pipe 52 is transversely fixed in the external connection bin 51, the connection pipe 52 is provided with a plurality of sieve pores, and a buffer bag 54 is further sleeved outside the connection pipe in the external connection bin 51;
the outer connecting bin 51 is also internally provided with a partition plate 53, and the buffer bag 54 is hermetically attached to the partition plate 53.
As a preferred embodiment, one side of the external connection bin 51 is communicated with an air pressure pipe 55, one end of the air pressure pipe 55 is communicated with an external air pump (not shown in the figure), that is, the isolation plate can divide the external connection bin into two chambers from left to right, and when the external air pump is in a working state, the air in the chamber on one side of the external connection bin can be discharged through the air pressure pipe, so that the buffer bag can be actively expanded, and an active absorption and decompression effect can be achieved; especially, when the gas is abnormally gushed out, the first pressure reducing device can carry out active absorption pressure reduction work, the second pressure reducing device correspondingly carries out passive pressure reduction (namely, the external air pump does not work), in the process, if the gas discharge pressure in the external pipe is still higher than a normal value, the second pressure reducing device synchronously carries out active absorption pressure reduction work, and if the gas discharge pressure in the external pipe is lower than a warning value, the air pressure pipe can slowly deflate, so that the elasticity of the buffer bag is recovered.
In this embodiment, a plurality of guide seats 56 are circumferentially arranged on the outer connecting bin 51, a side shaft bracket 57 is arranged on each guide seat 56 in a relatively deflectable manner, each side shaft bracket 57 is driven to deflect by a rotating disk arranged on the guide seat 56, an extrusion wheel 58 is further arranged at one end of each side shaft bracket 57 and used for extruding and exhausting one end of each buffer bag after the first pressure reducing device or the second pressure reducing device completes pressure reduction, so that gas discharge is accelerated in an auxiliary manner, particularly, the side shaft brackets are intermittently laterally extruded through the rotating action of the guide seats, so that the control of low-speed gas discharge in the buffer bags to connecting pipes is facilitated, at the moment, the connecting pipes have the convergence of conveying gas and are lower than a pressure warning value, and the safety is high.
A use method of an overrun-preventing water-gas-slag separation device for underground drilling of a coal mine comprises the following steps:
step 1: drilling and installing; an outer sealing seat 1 is embedded and installed at a drilling hole, and at the moment, a hole tee 21 is in locking fit with one side of the outer sealing seat 1;
step 2: primary current limiting and discharging; the length of the flow-limiting column 23 relative to the penetration port tee joint 21 is adjusted through the rotation effect of the threaded sleeve 22, at the moment, the flow-limiting column 23 can perform local flow limitation on the cross section of the drainage port, coal slag, partial gas and waste water generated by drilling enter the water-gas-slag separating device 13 through the lower end of the port tee joint 21, and most of the gas enters the centralized extraction device 16 through the air pressure buffer assembly 3 in ascending;
and step 3: gas is pumped and discharged; coal slag, partial gas and waste water generated by drilling can be centrifugally separated under the rotating action of the filter cylinder 41, at the moment, the gas is spirally concentrated in the middle of the filter cylinder 41, and the collecting base 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 can be effectively separated;
and 4, step 4: air pressure buffering, wherein gas in the hole enters the first pressure reducing device 5 and the second pressure reducing device 6 through the orifice tee joint 21, so that the buffering bag 54 in the first pressure reducing device 5 and the second pressure reducing device 6 is expanded and slowly enters the centralized extraction device 16, and the safety is high;
and 5: separating the precipitate; the coal slag is precipitated in the water-gas-slag separating device 13, the gas in the water-gas-slag separating device 13 enters the centralized extraction device 16 through the extraction pipe 11, meanwhile, the waste water enters the temporary sump 14, and after the coal slag is precipitated, a shovel is manually adopted, so that the separation of the coal slag, the gas and the waste water is finally realized.
In particular, the amount of the solvent to be used,
the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent substitutions or changes according to the technical solution and the inventive concept of the present invention should be covered by the scope of the present invention.
Claims (9)
1. The utility model provides a colliery is bored in pit and is prevented transfinite aqueous vapor sediment separator which characterized in that: the sealing device comprises an outer sealing seat (1), wherein the outer sealing seat (1) is concentrically embedded and fixed at a drilling hole in a sealing manner, and one side of the outer sealing seat (1) is fixedly locked with a flow limiting separation assembly (2) through a bolt; the lower end of the flow-limiting separation component (2) is communicated with a water-gas-slag separation device (13) through a slag discharge pipe (12), coal slag generated in a hole is settled 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 a temporary water sump (14) through a water discharge pipe;
a centralized extraction device (16) is further arranged on one side of the flow-limiting separation assembly (2), extraction pipes (11) are communicated with air inlets of the centralized extraction device (16), 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 gas extraction pipe (11) connected between the current-limiting separation component (2) and the water-gas-slag separation device (13) is also provided with a gas pressure buffer component (3), and the gas pressure buffer component (3) can reduce gas discharge pressure in an expansion state so as to slowly enter the centralized gas extractor (16);
and the exhaust port of the centralized extraction device (16) is also connected with a gas collecting pipe (15) through a valve.
2. The device for preventing the water, the gas and the slag from exceeding the limit during the underground drilling of the coal mine according to claim 1, is characterized in that: 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 arranged in the orifice tee joint (21) in a concentric rotation mode, the threaded sleeve is arranged outside a drill rod in a sleeved mode, 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) in a gear meshing mode for transmission, a flow-limiting column (23) is 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 the thread meshing effect; and a fixed bin (4) is communicated below the orifice tee joint (21).
3. The device for preventing the water, the gas and the slag from exceeding the limit during the underground drilling of the coal mine according to claim 1, is characterized in that: the cross section of the flow limiting column (23) is of a three-section structure, and the section of one end close to the drill hole is smaller than that of the end far away from the drill hole.
4. The device for preventing the water, the gas and the slag from exceeding the limit during the underground drilling of the coal mine according to claim 2, is characterized in that: a filter cylinder (41) is arranged in the fixed bin (4) in a relatively rotating manner, one end of the filter cylinder (41) is rotatably connected below the orifice tee joint (21), the slag discharge 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 one end of the outer ring bin (42) is communicated with a drainage seat (44);
an inner connecting pipe is vertically arranged in the filter cylinder (42), 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 switching pipe (45).
5. The device for preventing the water, the gas and the slag from exceeding the limit during the underground drilling of the coal mine according to claim 1, is characterized in that: 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 external connecting pipe (31), and one ends of the first pressure reducing device (5) and the second pressure reducing device (6) are both connected with a branch pipe fitting (32) and communicated with the concentrated extraction device (16) through the branch pipe fitting (32).
6. The device for preventing the water, the gas and the slag from exceeding the limit during the underground drilling of the coal mine according to claim 5, is characterized in that: the first pressure reducing device (5) and the second pressure reducing device (6) are identical in composition structure and jointly comprise an external connecting bin (51), a connecting pipe (52) is transversely fixed in the external connecting bin (51), a plurality of sieve holes are formed in the connecting pipe (52), and a buffering bag (54) is sleeved outside the connecting pipe in the external connecting bin (51);
and a partition plate (53) is further arranged in the external connection bin (51), and the buffer bag (54) is hermetically attached to the partition plate (53).
7. The device for preventing the water, the gas and the slag from exceeding the limit during the underground drilling of the coal mine according to claim 6, is characterized in that: one side of the external connection bin (51) is communicated with an air pressure pipe (55), and one end of the air pressure pipe (55) is communicated with an external air pump.
8. The device for preventing the water, the gas and the slag from exceeding the limit during the underground drilling of the coal mine according to claim 6, is characterized in that: the outer connecting bin (51) is circumferentially provided with a plurality of guide seats (56), each guide seat (56) is provided with a side shaft bracket (57) capable of deflecting relatively, each side shaft bracket (57) is driven to deflect by a rotating disk installed on each guide seat (56), and one end of each side shaft bracket (57) is further provided with a squeezing wheel (58).
9. The use method of the ultralimit-preventing water-gas-slag separation device for underground drilling of the coal mine is characterized by comprising the following steps of: 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 at the moment, a hole tee (21) is matched with one side of the outer sealing seat (1) in a locking mode;
step 2: primary current limiting and discharging; the length of the flow limiting column (23) which relatively penetrates into the orifice tee joint (21) is adjusted through the rotating action of the threaded sleeve (22), at the moment, the flow limiting column (23) can perform local flow limiting on the cross section of a drainage port, coal slag, partial gas and waste water generated by drilling enter the water-gas-slag separating device (13) through the lower end of the orifice tee joint (21), and most of gas enters the centralized extraction device (16) through the air pressure buffer assembly (3) in ascending;
and step 3: gas is pumped and discharged; coal slag, partial gas and waste water generated by drilling can be centrifugally separated under the rotating action of the filter cylinder (41), at the moment, the gas is spirally concentrated in the middle of the filter cylinder (41), and the collecting base (43) on the interconnecting pipe can correspondingly pump and discharge the gas into the pumping pipe (11) positioned at the upper end of the orifice tee joint (21);
and 4, step 4: air pressure buffering, wherein gas in the hole enters a first pressure reducing device (5) and a second pressure reducing device (6) through an orifice tee joint (21), so that buffering bags (54) in the first pressure reducing device (5) and the second pressure reducing device (6) are expanded and slowly enter a centralized extraction device (16);
and 5: separating the precipitate; the coal slag is precipitated in the water-gas-slag separating device (13), gas in the water-gas-slag separating device (13) enters the centralized extraction device (16) through the extraction pipe (11), meanwhile, the waste water enters the temporary sump (14), and after the coal slag is precipitated, a shovel is manually adopted to shovel out the coal slag, the gas and the waste water, so that the separation of the coal slag, the gas and the waste water 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 |
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| CN115199317A true CN115199317A (en) | 2022-10-18 |
| CN115199317B CN115199317B (en) | 2024-03-12 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE884371A (en) * | 1979-07-21 | 1980-11-17 | Korfmann Gmbh Maschf | PROCESS FOR SUCTION OF GAS FROM COAL MINING HOLES USING TUBING AND TUBING APPLYING THIS METHOD |
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