CN211370341U - Dust and blowout prevention device for coal mine gas drainage - Google Patents
Dust and blowout prevention device for coal mine gas drainage Download PDFInfo
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- CN211370341U CN211370341U CN202020026466.XU CN202020026466U CN211370341U CN 211370341 U CN211370341 U CN 211370341U CN 202020026466 U CN202020026466 U CN 202020026466U CN 211370341 U CN211370341 U CN 211370341U
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Abstract
A dust-removing blowout preventer for gas drainage in coal mines comprises dust-removing equipment and a blowout-preventing dust hood box connected with the dust-removing equipment, the blowout prevention dust hood box comprises a dust box used for being covered at the drill hole and a blowout prevention mechanism arranged on one side of the dust box facing the drill hole, the top and the bottom of the dust collection box are respectively provided with a dust removal port and a slag discharge port, two side walls of the dust collection box along the drilling direction are provided with openings for the drill rod to pass through, the blowout prevention mechanism comprises a metal sleeve connected with an opening on the side wall of the dust collection box, a blowout prevention protection barrel detachably connected at the end part of the metal sleeve and a metal pipe detachably connected at the end part of the blowout prevention protection barrel, wherein the blowout prevention protective cylinder comprises a rubber cylinder capable of expanding by air blowing and a metal cylinder shell arranged outside the rubber cylinder in a sealing manner, an inflation gap is formed between the rubber cylinder and the metal cylinder shell, and an air inlet pipe orifice is formed in the top of the metal cylinder shell. The utility model discloses can realize preventing spouting dust removal effect simultaneously.
Description
Technical Field
The utility model relates to a coal mine equipment technical field specifically is a coal mine gas drainage is with dust removal blowout preventer.
Background
The gas disaster seriously restricts the safe and efficient production of the mine, and the gas explosion can also cause a great amount of casualties and property loss. At present, in order to ensure the safe production of high-gas and outburst mines, a production mode of firstly pumping and then digging and firstly pumping and then mining is generally adopted, but in the gas pumping and drilling construction process, the gas injection hole phenomenon inevitably occurs under the common influence of coal bed occurrence conditions, gas pressure conditions and construction processes, and the gas injection hole phenomenon becomes one of the main influence factors of the gas overrun accidents of the mines. In the process of coal hole digging construction and coal seam drilling, a large amount of gas is sprayed out from coal rock cracks and drill holes to cause gas spraying holes, so that the drill holes cannot be continuously constructed, and gas explosion caused by gas overrun in a tunneling roadway is easily caused. According to the statistical data in recent years, coal mine accidents caused by gas explosion account for 47% of the total number of coal mine accidents, and how to effectively control the gas leakage is a very concerned problem for all parts of coal mines.
The prior art is that a pipeline of a gas drainage system is connected into a gas receiver to suck gas sprayed from a drilling hole, but the device is suitable for uniform and slow release of gas in a coal seam, but is difficult to deal with sudden and violent spraying of a large amount of gas in a high-gas and outburst coal seam, and can not really realize blowout prevention when the gas in a spraying hole is released under high pressure.
In addition, the extraction process is limited by underground conditions, water and dust can be extracted from the drill hole at the same time, the extracted water and dust can increase extraction resistance, and meanwhile, embedded detection instruments in the extraction pipeline are affected. Dust removal is required while preventing blowout.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model aims at providing a colliery gas is taken out and is put with removing dust blowout preventer provides, when the gas orifice, can effectively take out and adopt clearance seal with between drilling and the drilling rod through preventing spouting a protection section of thick bamboo, prevents gushing out of gas, prevents the emergence of orifice, and cooperates dust collecting equipment to use, can realize preventing spouting dust removal effect simultaneously.
The utility model discloses a solve the technical scheme who takes of above-mentioned problem and do: a dust-removing blowout preventer for gas drainage in coal mines comprises dust-removing equipment and a blowout-preventing dust hood box connected with the dust-removing equipment, the blowout prevention dust hood box comprises a dust box used for being covered at the drill hole and a blowout prevention mechanism arranged on one side of the dust box facing the drill hole, the top and the bottom of the dust collection box are respectively provided with a dust removal port and a slag discharge port, two side walls of the dust collection box along the drilling direction are provided with openings for the drill rod to pass through, the blowout prevention mechanism comprises a metal sleeve connected with an opening on the side wall of the dust collection box, a blowout prevention protection barrel detachably connected at the end part of the metal sleeve and a metal pipe detachably connected at the end part of the blowout prevention protection barrel, wherein the blowout prevention protective cylinder comprises a rubber cylinder capable of expanding by air blowing and a metal cylinder shell arranged outside the rubber cylinder in a sealing manner, an inflation gap is formed between the rubber cylinder and the metal cylinder shell, and an air inlet pipe orifice is formed in the top of the metal cylinder shell.
Preferably, the air inlet pipe mouth is connected with an underground air source of the coal mine through an air inlet pipe, the air inlet pipe is provided with an electromagnetic valve for controlling the opening and closing of an air inlet pipeline, the coal mine is also provided with a gas concentration alarm, and the output end of the gas concentration alarm is connected with the electromagnetic valve.
Preferably, the output end of the gas concentration alarm is also connected with a gas overproof alarm lamp.
Preferably, the inner diameters of the metal sleeve, the rubber cylinder and the metal pipe are the same, and the inner diameters of the metal sleeve, the rubber cylinder and the metal pipe are all larger than the outer diameter of the drill rod.
Preferably, the metal sleeve and the blowout prevention protection barrel and the metal pipe are in sealing connection through flange bolts respectively.
Preferably, the dust removing device comprises a dust collecting cylinder, one end of the dust collecting cylinder is provided with a dust inlet, the other end of the dust collecting cylinder is provided with a cone, the dust inlet is connected with a dust collecting box through a dust collecting hose, the large-diameter end of the cone is hermetically connected with the end part of the dust collecting cylinder, the small-diameter end of the cone is provided with a dust exhaust pipe, the tail end of the dust exhaust pipe is provided with a sealed dust exhaust box, the top of the side wall of the sealed dust exhaust box is provided with a gas exhaust port for connecting a gas exhaust pipe, the bottom of the side wall of the sealed dust exhaust box is provided with a dust exhaust port for exhausting dust and coal slag, the inner cavities of the dust collecting cylinder and the cone are provided with a double-cone inner cylinder, one end of the double-cone inner cylinder, facing the dust inlet, is sealed, the other end of the double-cone inner cylinder is open and is provided with a water, the other end of the dust collector is vertically bent and then sequentially penetrates out of the side wall of the double-cone inner cylinder and the side wall of the dust collecting cylinder, and a three-way valve used for connecting the water inlet pipe and the air inlet pipe is arranged.
Preferably, the large-diameter end of the cone is detachably connected with the end part of the dust collecting cylinder through a flange in a sealing manner, and a sealing gasket is arranged between the cone and the flange of the dust collecting cylinder in a cushioning manner.
Preferably, the double-cone inner cylinder is a cylinder formed by hermetically connecting two cone cylinders through large-diameter ends, and the circumference of the double-cone inner cylinder is suspended and erected in the centers of the dust collecting cylinder and the cone cylinder through a plurality of fixing columns arranged on the inner wall of the dust collecting cylinder.
Preferably, the taper of the tapered cylinder on the side of the double-tapered inner cylinder adjacent to the dust exhaust pipe is greater than the taper of the tapered cylinder.
Preferably, the water vapor spray head is arranged at the position of the port of the small diameter end of the adjacent conical barrel.
Compared with the prior art, the utility model discloses following beneficial effect has:
first, a colliery gas drainage is with removing dust blowout preventer, prevent that blowout mechanism adopts the expanded rubber barrel structure of can bulging, cooperation solenoid valve and air supply in the pit, in case the promotion of gas concentration is reported to the police, can be to the gas blowing in the gas filled gap, the pressure of air supply in the pit is very big, the rubber barrel expands in the twinkling of an eye in the time, the drilling rod locking that will be located a section of thick bamboo, gas drainage clearance between sealed drilling rod and the section of thick bamboo is sealed in the drilling, prevent it and emit, and then avoid the gas orifice, eliminate the potential safety hazard from the root.
Second, a colliery gas drainage is with removing dust blowout preventer, dust collecting equipment adopts the structure of double-deck section of thick bamboo, form the passageway of dust between dust collecting cylinder and the bipyramid inner tube, the water and the gaseous high-speed discharge of injection department in by the bipyramid inner tube, enter into in the dust exhaust pipe, form the negative pressure in dust collecting cylinder and awl section of thick bamboo, flow through fast-speed aqueous vapor and produce negative pressure suction, under the effect of negative pressure, collect the dust that produces in the gas drainage and discharge, effectively eliminate the dust in the gas, moreover, the steam generator is simple in structure, low in manufacturing cost, need not periodic maintenance, long-time use, it is effectual to collect and discharge.
Third, a colliery gas drainage is with removing dust blowout preventer, prevent spouting mechanism's simple structure, low in production cost is honest and clean, dust collecting equipment's structural design is ingenious, the result of use is splendid, the orifice and the dust removal problem of solution colliery gas drainage that can be fine are fit for the wide use under the colliery.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the blowout preventer mechanism of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the blowout preventer cartridge of FIG. 1;
fig. 4 is a schematic structural view of the blowout preventing mechanism in fig. 1 in a blowout preventing operating state.
The labels in the figure are: 1. the device comprises a dust collection box, 101, a dust removal port, 102, a slag discharge port, 2, a metal sleeve, 3, a blowout prevention protection barrel, 31, a rubber barrel, 32, a metal barrel shell, 33, an inflation gap, 4, a metal pipe, 5, an air inlet pipe opening, 6, an air inlet pipe, 7, a downhole air source, 8, an electromagnetic valve, 9, a gas concentration alarm, 10, a gas over-standard alarm lamp, 11, a dust collection barrel, 12, a dust inlet, 13, a cone barrel, 14, a dust collection hose, 15, a dust discharge pipe, 16, a sealed dust discharge box, 17, a gas discharge port, 18, a dust discharge port, 19, a double-cone inner barrel, 191, a fixed column, 20, a water-vapor spray nozzle, 21, a water-vapor spray pipe, 22, a three-way valve, 23.
Detailed Description
The present invention will be described in detail with reference to the following embodiments, which are based on the technical solution of the present invention and provide detailed embodiments and specific operation processes.
As shown in the figure, the utility model relates to a coal mine gas drainage is with preventing dust removal blowout preventer, including the dust collecting equipment and the dust collecting equipment connected prevents spouting the dust collecting tank case, prevent spouting the dust collecting tank case and include one be used for covering establish at the dust collecting tank 1 of drilling department and set up prevent spouting the mechanism on dust collecting tank 1 towards drilling one side, the top and the bottom of dust collecting tank 1 are provided with dust removal mouth 101 and row cinder notch 102 respectively, set up the trompil that is used for drilling rod 23 to pass on two lateral walls along the drilling direction of dust collecting tank 1, prevent spouting the mechanism and include a metal sleeve 2 of being connected with the trompil on the dust collecting tank 1 lateral wall, can dismantle the protection section of thick bamboo 3 of preventing spouting of connecting in metal sleeve 2 tip department and can dismantle the metal pipe 4 of connecting in preventing spouting protection section of thick bamboo 3 tip department, wherein, prevent spouting protection section of thick bamboo 3 includes can blow up expanded rubber tube, an inflation gap 33 is formed between the rubber cylinder 31 and the metal cylinder shell 32, and the top of the metal cylinder shell 32 is provided with an air inlet pipe orifice 5.
The foregoing is a basic embodiment of the invention, and further modifications, optimizations, or limitations may be made on the foregoing.
Further, the air inlet pipe mouth 5 is connected with an underground air source 7 of a coal mine through an air inlet pipe 6, the air inlet pipe 6 is provided with an electromagnetic valve 8 for controlling the opening and closing of an air inlet pipeline, a gas concentration alarm 9 is further arranged under the coal mine, and the output end of the gas concentration alarm 9 is connected with the electromagnetic valve 8.
Further, the output end of the gas concentration alarm 9 is also connected with a gas standard exceeding alarm lamp 10.
Further, the inner diameters of the metal sleeve 2, the rubber cylinder 31 and the metal pipe 4 are the same, and the inner diameters of the three are all larger than the outer diameter of the drill rod 23.
Further, the metal sleeve 2 and the blowout prevention protection barrel 3, and the blowout prevention protection barrel 3 and the metal pipe 4 are respectively in sealing connection through flange bolts.
Further, the dust removing equipment comprises a dust collecting cylinder 11, one end of the dust collecting cylinder 11 is provided with a dust inlet 12, the other end of the dust collecting cylinder is provided with a cone 13, the dust inlet 12 is connected with a dust collecting box 1 through a dust collecting hose 14, the large diameter end of the cone 13 is hermetically connected with the end part of the dust collecting cylinder 11, the small diameter end of the cone 13 is provided with a dust exhaust pipe 15, the tail end of the dust exhaust pipe 15 is provided with a sealed dust exhaust box 16, the top of the side wall of the sealed dust exhaust box 16 is provided with a gas exhaust port 17 for connecting the gas exhaust pipe, the bottom of the side wall of the sealed dust exhaust box 16 is provided with a dust exhaust port 18 for exhausting dust and cinder, the inner cavities of the dust collecting cylinder 11 and the cone 13 are provided with a double-cone inner cylinder 19, one end of the double-cone inner cylinder 19 facing the dust inlet 12 is sealed, the other end is open and is provided with a water-gas nozzle 20, one end of the water vapor spray pipe 21 is connected with an outlet of the water vapor spray nozzle 20, and the other end of the water vapor spray pipe is vertically bent and then sequentially penetrates through the side wall of the double-cone inner cylinder 19 and the side wall of the dust collecting cylinder 11 to be provided with a three-way valve 22 for connecting a water inlet pipe and an air inlet pipe.
Further, the large-diameter end of the cone 13 is detachably connected with the end of the dust collecting cylinder 11 through a flange seal, and a sealing gasket is arranged between the cone 13 and the flange of the dust collecting cylinder 11.
Further, the double-cone inner cylinder 19 is a cylinder formed by two cone cylinders which are hermetically connected through large-diameter ends, and the circumference of the double-cone inner cylinder 19 is suspended and erected in the centers of the inner cavities of the dust collecting cylinder 11 and the cone cylinder 13 through a plurality of fixing columns 191 arranged on the inner wall of the dust collecting cylinder 11.
Further, the taper of the conical cylinder on the side of the double-cone inner cylinder 19 adjacent to the dust exhaust pipe 15 is greater than that of the conical cylinder 13.
Further, the water vapor spray nozzle 20 is arranged at a position adjacent to the small-diameter end port of the cone 13.
The working principle of the blowout prevention mechanism is as follows:
the blowout prevention protection barrel in the blowout prevention mechanism is equivalent to a safety air bag for preventing gas spray holes, under the normal working condition, the blowout prevention protection barrel 3 does not intervene to work and is equivalent to a common barrel, once the gas spray holes are met, gas is quickly released to drill holes under high pressure, the underground gas concentration is quickly increased in a short time, once the underground gas concentration exceeds the set rated value of the gas concentration alarm 9, the gas concentration alarm 9 intervenes to work and simultaneously sends signals to the electromagnetic valve 8 and the gas standard exceeding alarm lamp 10, the gas standard exceeding alarm lamp 10 gives an alarm to provide safety protection measures for workers, meanwhile, the electromagnetic valve 8 receives the signals and then opens the air inlet pipeline, the underground high-pressure gas source is quickly filled into the air inflation gap 33 through the air inlet pipe orifice 5, the rubber barrel 31 expands and swells at the same moment under the high-pressure gas source to lock and seal the drill rod 23 positioned in the center of the rubber barrel 31, and then the gas drainage clearance that gushes out is sealed, blocks up the gas seal in the drilling, prevents that the gas from continuously gushing out to avoid the emergence of gas orifice.
The working principle of the dust removing equipment is as follows:
the three-way valve 22 is simultaneously connected to a water tank and an air tank under a coal mine, high-pressure water and high-pressure gas are introduced into the double-cone inner cylinder 19 and discharged through the water-gas spray head 20, negative pressure is formed in the dust collecting cylinder and the cone cylinder under the action of water-gas high-level fluid, coal dust at the dust removing cover is sucked in through the negative pressure and discharged through the sealed dust removing box 16, the coal dust enters the dust removing pipe 15 and then is mixed with water gas to form water coal slurry or water coal slag, and the water coal slurry or the water coal slag enters the sealed dust removing box 16 and falls into a dust discharging port at the bottom to be discharged; and because the effect of negative pressure, when inhaling the coal dust, gas is also inhaled simultaneously, and the gas discharge port 17 and the gas drainage pipe connection at sealed dust exhaust box 16 top, the gas in the barrel enters sealed dust exhaust box 16 and then discharges through gas discharge port 17 at the top.
In the equipment, the dust collecting cylinder 11, the dust collecting hose 14, the cone cylinder 13 and the sealed dust discharging box 16 can be freely disassembled, each structure is formed by forming and welding metal plates, the cost is low, the assembly and disassembly are convenient, regular manual maintenance is not needed in the use, and the dust collecting device can be used for a long time.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been described with reference to the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make equivalent modifications or changes within the technical scope of the present invention, and any simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are within the technical scope of the present invention.
Claims (10)
1. The utility model provides a colliery gas drainage is with dust removal blowout preventer which characterized in that: the blowout prevention dust hood comprises dust removing equipment and a blowout prevention dust hood box connected with the dust removing equipment, the blowout prevention dust hood box comprises a dust box (1) used for being covered at a drill hole and a blowout prevention mechanism arranged on one side, facing the drill hole, of the dust box (1), a dust removing port (101) and a slag discharging port (102) are respectively arranged at the top and the bottom of the dust box (1), openings for a drill rod (23) to pass through are formed in two side walls of the dust box (1) along the drilling direction, the blowout prevention mechanism comprises a metal sleeve (2) connected with the openings in the side walls of the dust box (1), a blowout prevention protection cylinder (3) detachably connected to the end part of the metal sleeve (2) and a metal pipe (4) detachably connected to the end part of the blowout prevention protection cylinder (3), wherein the protection cylinder (3) comprises a rubber cylinder (31) capable of blowout prevention air expansion and a metal cylinder shell (32) sealed and sleeved outside the rubber cylinder (31), an inflation gap (33) is formed between the rubber cylinder (31) and the metal cylinder shell (32), and an air inlet pipe orifice (5) is arranged at the top of the metal cylinder shell (32).
2. The dust removal blowout preventer as claimed in claim 1, wherein the dust removal blowout preventer comprises: the gas inlet pipe mouth (5) is connected with an underground gas source (7) of a coal mine through a gas inlet pipe (6), the gas inlet pipe (6) is provided with a solenoid valve (8) used for controlling the opening and closing of a gas inlet pipeline, a gas concentration alarm (9) is further arranged underground the coal mine, and the output end of the gas concentration alarm (9) is connected with the solenoid valve (8).
3. The dust removal blowout preventer as claimed in claim 2, wherein the dust removal blowout preventer comprises: the output end of the gas concentration alarm (9) is also connected with a gas standard exceeding alarm lamp (10).
4. The dust removal blowout preventer as claimed in claim 1, wherein the dust removal blowout preventer comprises: the inner diameters of the metal sleeve (2), the rubber cylinder (31) and the metal pipe (4) are the same, and the inner diameters of the metal sleeve, the rubber cylinder and the metal pipe are all larger than the outer diameter of the drill rod (23).
5. The dust removal blowout preventer as claimed in claim 1, wherein the dust removal blowout preventer comprises: the metal sleeve (2) and the blowout prevention protection barrel (3) and the metal pipe (4) are connected in a sealing mode through flange bolts.
6. The dust removal blowout preventer as claimed in claim 1, wherein the dust removal blowout preventer comprises: the dust removal equipment comprises a dust collection cylinder (11), one end of the dust collection cylinder (11) is provided with a dust inlet (12), the other end of the dust collection cylinder is provided with a cone cylinder (13), the dust inlet (12) is connected with a dust collection box (1) through a dust collection hose (14), the large-diameter end of the cone cylinder (13) is in sealed connection with the end of the dust collection cylinder (11), the small-diameter end of the cone cylinder (13) is provided with a dust exhaust pipe (15), the tail end of the dust exhaust pipe (15) is provided with a sealed dust exhaust box (16), the top of the side wall of the sealed dust exhaust box (16) is provided with a gas exhaust port (17) for connecting the gas exhaust pipe, the bottom of the side wall of the sealed dust exhaust box (16) is provided with a dust exhaust port (18) for exhausting dust cinder, the inner cavities of the dust collection cylinder (11) and the cone cylinder (13) are provided with a double-cone inner cylinder (19), and the double-cone inner cylinder (19, The other end is open and is provided with aqueous vapor shower nozzle (20), and bipyramid inner tube (19) inner chamber level is provided with a aqueous vapor spray tube (21), aqueous vapor spray tube (21) one end and the exit linkage of aqueous vapor shower nozzle (20), and the other end is provided with a three-way valve (22) that is used for connecting inlet tube and intake pipe after buckling in proper order wearing out bipyramid inner tube (19) lateral wall, dust collecting vessel (11) lateral wall after buckling perpendicularly.
7. The dust removal blowout preventer as claimed in claim 6, wherein the dust removal blowout preventer comprises: the large-diameter end of the conical cylinder (13) is connected with the end part of the dust collecting cylinder (11) in a sealing and detachable mode through a flange, and a sealing gasket is arranged between the conical cylinder (13) and the flange of the dust collecting cylinder (11).
8. The dust removal blowout preventer as claimed in claim 6, wherein the dust removal blowout preventer comprises: the double-cone inner cylinder (19) is formed by two cone-shaped cylinders which are connected through a large-diameter end in a sealing mode, and the circumference of the double-cone inner cylinder (19) is suspended and erected in the centers of inner cavities of the dust collecting cylinder (11) and the cone-shaped cylinders (13) through a plurality of fixing columns (191) arranged on the inner wall of the dust collecting cylinder (11).
9. The dust removal blowout preventer as claimed in claim 6, wherein the dust removal blowout preventer comprises: the taper of the conical cylinder at one side of the double-cone inner cylinder (19) adjacent to the dust exhaust pipe (15) is larger than that of the conical cylinder (13).
10. The dust removal blowout preventer as claimed in claim 6, wherein the dust removal blowout preventer comprises: the water vapor spray head (20) is arranged at the position of the small-diameter end port of the adjacent conical barrel (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020026466.XU CN211370341U (en) | 2020-01-07 | 2020-01-07 | Dust and blowout prevention device for coal mine gas drainage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020026466.XU CN211370341U (en) | 2020-01-07 | 2020-01-07 | Dust and blowout prevention device for coal mine gas drainage |
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| CN211370341U true CN211370341U (en) | 2020-08-28 |
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| CN202020026466.XU Active CN211370341U (en) | 2020-01-07 | 2020-01-07 | Dust and blowout prevention device for coal mine gas drainage |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112081551A (en) * | 2020-10-10 | 2020-12-15 | 淮南矿业(集团)有限责任公司 | Gas drilling blowout preventer |
| CN113236346A (en) * | 2021-06-28 | 2021-08-10 | 山东科技大学 | Anti-collapse reinforced gas extraction device and use method |
-
2020
- 2020-01-07 CN CN202020026466.XU patent/CN211370341U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112081551A (en) * | 2020-10-10 | 2020-12-15 | 淮南矿业(集团)有限责任公司 | Gas drilling blowout preventer |
| CN113236346A (en) * | 2021-06-28 | 2021-08-10 | 山东科技大学 | Anti-collapse reinforced gas extraction device and use method |
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