CN110821395A - Sealed buffering of borehole construction operation prevents transfinite protection system in pit - Google Patents
Sealed buffering of borehole construction operation prevents transfinite protection system in pit Download PDFInfo
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- CN110821395A CN110821395A CN201911238621.2A CN201911238621A CN110821395A CN 110821395 A CN110821395 A CN 110821395A CN 201911238621 A CN201911238621 A CN 201911238621A CN 110821395 A CN110821395 A CN 110821395A
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- 238000010276 construction Methods 0.000 title claims abstract description 28
- 230000003139 buffering effect Effects 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 101
- 239000003245 coal Substances 0.000 claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000005553 drilling Methods 0.000 claims abstract description 36
- 238000001125 extrusion Methods 0.000 claims abstract description 17
- 230000006837 decompression Effects 0.000 claims abstract description 15
- 239000002893 slag Substances 0.000 claims description 36
- 238000000926 separation method Methods 0.000 claims description 29
- 238000000605 extraction Methods 0.000 claims description 25
- 238000005086 pumping Methods 0.000 claims description 19
- 230000002265 prevention Effects 0.000 claims description 17
- 229920000642 polymer Polymers 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 4
- 230000035939 shock Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 71
- 230000000694 effects Effects 0.000 description 7
- 230000008676 import Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B12/00—Accessories for drilling tools
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- 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- 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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
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- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a sealing, buffering and overrun-preventing protection system for underground drilling construction operation, which comprises an extrusion expansion sealing device, a coal water automatic discharge sealing device and a high-pressure gas decompression and buffering device of an orifice, wherein the extrusion expansion sealing device is connected with the coal water automatic discharge device; meanwhile, the invention is light, flexible, firm and wear-resistant, reliable in sealing, has the characteristics of good disassembly performance and convenient disassembly and maintenance, and is very convenient to match and connect with various drilling machines, drilling tools and other equipment.
Description
Technical Field
The invention belongs to the technical field of coal mining, and particularly belongs to a coal mine gas treatment technology, a drilling construction protection technology and a gas overrun prevention technology.
Background
The gas disaster is one of the most main disasters of high gas mines and coal and gas outburst mines, and is also one of the main bottlenecks restricting the production of the gas disaster. In the coal seam without the condition of a mining protective layer, the coal seam gas is pre-pumped by drilling holes in the construction process, so that the inevitable choice for controlling the mine gas is provided. During drilling of various coal seams in underground construction of a high-gas mine, due to the fact that the gas content of the coal seam is high, the pressure is high, coal dust and gas in the drilled holes are prone to being continuously sprayed out in a short time, once control measures are not in place, high-concentration over-limit of the gas on a construction operation site can be caused, the rapidly sprayed coal dust can also cause injury to operators, and meanwhile, hidden danger of gas accidents is caused. Especially for a single low-permeability coal seam, the gas extraction efficiency is low, the mine generally adopts cross-layer drilling hydraulic punching and hydraulic slotting permeability-increasing measures to accelerate the gas treatment progress, and because a high-pressure water body quickly peels off a coal body, a large amount of gas and coal slag are instantly sprayed out of a drill hole under the action of high-pressure water flow, the short-time gas near the drill hole is extremely easy to exceed the limit, and the gas and coal impact damages people.
Therefore, safety protection measures must be taken during the drilling construction to pump and exhaust gas in time and realize the rapid separation of coal, water and gas. However, in the blowout preventer commonly adopted in mines at present, a sleeve is only lowered at an orifice to be connected with the blowout preventer, the sleeve and the hole wall are not tightly sealed, and gas continuously gushes out from the gap of the orifice during drilling construction; the sealing body at the joint part of the rear end of the blowout preventer and the drill rod is extruded by the rotation friction of the drill rod and the drilling disturbance, and the gap is easy to further expand to cause sealing failure. And the slag discharge port of the coal water gas separation device is mostly directly opened, when the instantaneous gas emission amount is larger, the slag discharge port becomes a main channel for gas dissipation due to the limited space of the coal water gas separation device, so that the effect of preventing the gas from exceeding the limit is greatly reduced. Meanwhile, a large amount of high-pressure gas is desorbed and released and rapidly gushes out, so that the whole drilling operation protection device is impacted. In conclusion, the device used by the existing mine has the defects of single function, large volume, heavy mass, poor sealing effect and unsatisfactory protection effect.
Disclosure of Invention
In order to overcome the defects of the conventional device, the invention provides a light, flexible, firm, wear-resistant and reliable-sealing drilling construction operation sealing buffer overrun-proof protection system, which integrates an orifice extrusion expansion sealing device, a coal water automatic discharge sealing device and a high-pressure gas decompression buffer device into a whole, comprehensively prevents overrun of gas during drilling construction, and ensures construction safety of operators
In order to achieve the purpose, the invention adopts the following technical scheme:
a sealed buffering anti-overrun protection system for underground drilling construction operation comprises an extrusion expansion sealing device, a coal water automatic discharge sealing device and a high-pressure gas decompression buffering device, wherein the extrusion expansion sealing device is connected with the coal water automatic discharge device, the coal water automatic discharge device is connected with the high-pressure gas damping buffering device, the extrusion expansion sealing device comprises a sleeve and an anti-blowout cavity, the front end of the sleeve is provided with a step, the outer wall of the sleeve is smooth, an external thread is integrally formed in the middle of the sleeve, the rear end of the sleeve is provided with a fixed thread, a high-polymer expansion ring, a propulsion cylinder and a rotating handle are sequentially arranged outside the sleeve, the rotating handle is in threaded connection with the middle of the sleeve, the sleeve is connected onto the anti-blowout cavity through the fixed thread, and the high-polymer expansion rubber ring, the propulsion cylinder and the rotating handle;
the automatic coal water discharging and sealing device comprises a coal water gas separation box and a rotary sealing cavity, wherein the coal water gas separation box is imported and is connected with an outlet of the blowout prevention cavity, the rotary sealing box is arranged at the lower part of the coal water gas separation box, a rotary shaft is arranged in the rotary sealing cavity, a hard rotary blade is arranged on the rotary shaft, a flexible sealing rubber mat is arranged between the rotary blade and the rotary sealing cavity, and the flexible sealing rubber mat is wrapped around the rotary blade.
Furthermore, the upper side and the lower side of the blowout prevention cavity are respectively and integrally formed with a source-dividing extraction port and a grain slag conveying port, a drill rod sealing rotary sealing part is arranged at the rear end of the blowout prevention cavity and comprises a sealing rubber gasket, an annular brush sealing part and a fixing chuck, and the drill rod sealing rotary sealing part comprises a sealing rubber gasket, an annular brush sealing part and a fixing chuck which are sequentially connected at the rear end of the blowout prevention cavity.
Furthermore, an outlet of the source separation extraction port is connected with a first source separation extraction pipe, an outlet of the first source separation extraction pipe is connected with an underground temporary extraction pipeline, an outlet of the grain slag conveying port is connected with a grain slag conveying pipe, and an outlet of the grain slag conveying pipe is connected with an inlet of the automatic coal water discharge sealing device.
Furthermore, a sub-source pumping and releasing port is integrally formed in the top of the coal water gas separation box, an outlet of the sub-source pumping and releasing port is connected with a second sub-source pumping and releasing pipe, an outlet of the second sub-source pumping and releasing pipe is connected with a downhole pumping and releasing pipeline, a conical grain slag conveying box is integrally formed in the bottom of the coal water gas separation box, a flange is arranged at the bottom of the conical grain slag conveying box, and the conical grain slag conveying box is connected to an inlet of the rotary sealing cavity through the flange.
Further, connect on the import of high-pressure gas decompression buffer on the export of coal aqueous vapor separator box one side, high-pressure gas decompression buffer includes flexible buffering package, a plurality of stereoplasm skeleton, the stereoplasm skeleton is evenly arranged in the buffering package, flexible buffering package import department is the taper type, and flexible buffering package comprises antistatic, collapsible material.
Furthermore, the rotating blades are provided with at least 3 pieces, included angles formed among the rotating blades are consistent, a coal water discharge port is formed in the bottom of the rotating seal cavity, and the diameter of the coal water discharge port is not larger than the linear distance between the top ends of the adjacent rotating blades.
Furthermore, a fixing nut is arranged on the rotating blade, and the flexible sealing rubber gasket is fixedly connected to the rotating blade through the fixing nut.
By adopting the technical scheme, the invention has the beneficial effects that: the invention provides a drilling construction operation protection system integrating the functions of sealing, buffering, automatic slag discharging, overrun prevention and the like, aiming at the position and the spraying hole characteristics of spraying hole hidden danger easily generated during the drilling construction of the underground coal mine. The orifice extrusion expansion sealing device ensures the sealing in the hole by rotating the rotating handle to extrude the polymer expansion rubber ring, eliminates the gas leakage source of the orifice gas, has simple and convenient operation and good sealing effect, adopts a replaceable annular brush sealing piece to realize the tight combination with the drill rod, and improves the sealing property because the coal scraps in the drill hole and the brush form a whole; the coal water automatic discharge sealing device adopts a rotary deslagging system to ensure that coal, water and gas in the coal water gas collecting tank cannot directly flow into a roadway, and realizes continuous and automatic discharge of coal scraps, water and the like into an external roadway on the basis of ensuring the coal-water-gas separation sealing effect; the high-pressure gas decompression buffer device can stretch out and draw back according to the amount of gas flowing out of a drilled hole during drilling, once a large amount of gas is sprayed out of the drilled hole during drilling, the device plays a temporary buffer role through volume change, and the hard framework can prevent the device from deforming due to negative pressure caused by connection of a drainage pipeline, so that the use is influenced; the invention greatly reduces the gas overrun times during the drilling construction period and effectively avoids the gas coal impact from hurting people; meanwhile, the invention is light, flexible, firm and wear-resistant, reliable in sealing, has the characteristics of good disassembly performance and convenient disassembly and maintenance, and is very convenient to match and connect with various drilling machines, drilling tools and other equipment.
Drawings
FIG. 1 is a schematic view of the installation connection of the present invention;
FIG. 2 is a schematic cross-sectional view of an orifice squeeze-and-expand seal of the present invention;
FIG. 3 is a schematic sectional view of the automatic coal water discharge sealing device of the present invention;
FIG. 4 is a schematic view of the flexible sealing gasket of the present invention;
in the figure: 1. a drill bit; 2. a drill stem; 3. a drilling machine; 4. a sleeve; 5. a polymer expansion rubber ring; 6. a propulsion cylinder; 7. rotating the handle; 8. fixing threads; 9. a blowout prevention cavity; 10. source-dividing extraction ports; 11. a granulated slag delivery port; 12. sealing the rubber gasket; 13. an annular brush seal; 14. fixing the chuck; 15. a first branch source extraction pipe; 16. temporarily extracting the pipe underground; 17. a grain slag conveying pipe; 18. a coal water gas separation tank; 19. a grain slag conveying pipe connecting port; 20. a source-dividing drawing and releasing port; 21. a high-pressure gas decompression buffer device connector; 22. a granulated slag conveying box; 23. a flange; 24. rotating the sealed cavity; 25. a coal water discharge port; 26. a rotating shaft; 27. rotating the leaf; 28. a flexible sealing rubber mat; 29. fixing a nut; 30. a flexible tapered connection; 31. a high-pressure gas decompression buffer device; 32. a hard skeleton; 33. a second sub-source extraction pipe; 34 underground extraction pipelines.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments as follows:
therefore, the following detailed description of the embodiments of the present invention, provided in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention, and all other embodiments, which can be obtained by those skilled in the art based on the embodiments of the present invention without inventive faculty, are within the scope of the invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements can be directly connected or indirectly connected through an intermediate medium, and the two elements can be communicated with each other, so that the specific meaning of the terms in the invention can be understood by those skilled in the art.
In conjunction with FIGS. 1-4: the utility model provides a sealed buffering of borehole construction operation prevents transfinite protection system, extrusion expansion sealing device, the automatic sealing device that discharges of coal water, high-pressure gas decompression buffer 31 including the drill way, extrusion expansion sealing device links to each other with the automatic discharging device of coal water, the automatic discharging device of coal water links to each other with high-pressure gas shock attenuation buffer, extrusion expansion sealing device includes sleeve pipe 4, prevents spouting cavity 9, sleeve pipe 4 front end is equipped with the step, and the outer wall is smooth, integrated into one piece has the external screw thread in the middle of the sleeve pipe 4, sleeve pipe 4 rear end is equipped with fixed thread 8, sleeve pipe 4 outside is equipped with polymer expansion circle, propulsion jar 6, twist grip 7 in proper order, twist grip 7 threaded connection is in the middle part of sleeve pipe 4, sleeve pipe 4 is connected on preventing spouting cavity 9 through fixed thread 8, polymer expansion rubber ring 5, propulsion jar 6, The rotating handles 7 are abutted in sequence;
the coal water automatic discharge sealing device comprises a coal water gas separation box 18 and a rotary sealing cavity 24, wherein an inlet of the coal water gas separation box 18 is connected with an outlet of a blowout prevention cavity, the rotary sealing box is arranged at the lower part of the coal water gas separation box 18, a rotating shaft 26 is arranged inside the rotary sealing cavity 24, a hard rotating blade 27 is arranged on the rotating shaft, a flexible sealing rubber gasket 28 is arranged between the rotating blade 27 and the rotary sealing cavity, and the flexible sealing rubber gasket 28 is wrapped around the rotating blade 27.
In this embodiment, the upper side and the lower side of the blowout prevention cavity 9 are respectively and integrally formed with a source-dividing extraction port 10 and a grain slag conveying port 11, the rear end of the blowout prevention cavity 9 is provided with a drill rod sealing rotary seal portion, the drill rod sealing rotary seal portion comprises a sealing rubber gasket 12, an annular brush seal 13 and a fixing chuck 14, and the drill rod sealing rotary seal portion comprises the sealing rubber gasket 12, the annular brush seal 13 and the fixing chuck 14 which are sequentially connected at the rear end of the blowout prevention cavity 9.
In the embodiment, the outlet of the source-dividing extraction port 10 is connected with a first source-dividing extraction pipe 15, the outlet of the first source-dividing extraction pipe 15 is connected with a 16-way underground temporary extraction pipe, the outlet of the grain slag conveying port 11 is connected with a grain slag conveying pipe 17, and the outlet of the grain slag conveying pipe 17 is connected with the inlet of the automatic coal water discharge sealing device.
In the embodiment, a sub-source pumping and releasing port 20 is integrally formed at the top of the coal water gas separation tank 18, an outlet of the sub-source pumping and releasing port 20 is connected with a second sub-source extraction pipe 33, an outlet of the second sub-source extraction pipe 33 is connected with a 34-way underground extraction pipe, a conical water slag conveying tank 22 is integrally formed at the bottom of the coal water gas separation tank 18, a flange 23 is arranged at the bottom of the conical water slag conveying tank 22, and the conical water slag conveying tank 22 is connected to an inlet of a rotary seal cavity 24 through the flange 23.
In this embodiment, connect on the export of 18 one side of coal water gas separator box on the import of high-pressure gas decompression buffer 31, high-pressure gas decompression buffer 31 includes flexible buffering package, a plurality of stereoplasm skeleton 32, stereoplasm skeleton 32 evenly arranges in the buffering package, flexible buffering package import department is the taper type, and flexible buffering package comprises antistatic, foldable material.
In this embodiment, the number of the rotating blades 27 is at least 3, included angles formed between the rotating blades are consistent, the bottom of the rotating seal cavity 24 is provided with a coal water discharge port 25, and the diameter of the coal water discharge port 25 is not greater than the linear distance between the top ends of the adjacent rotating blades 27.
In this embodiment, the rotating blade 27 is provided with a fixing nut 29, and the flexible sealing rubber pad 28 is fixedly connected to the rotating blade 27 through the fixing nut 29.
In the embodiment of the invention, the sealing, buffering and overrun-preventing protection system for the underground drilling construction operation comprises the following specific implementation steps:
before drilling construction, the orifice extrusion expansion sealing device is sent into a drill hole with a hole opened in advance, the rotating handle 7 is rotated to push the pushing cylinder 6 forwards, so that the pushing cylinder 6 is abutted and extrudes the polymer expansion rubber ring 5, and the polymer expansion rubber ring is expanded and is in close contact with the hole wall. The first sub-source pumping and releasing port 10 is connected with a downhole temporary pumping and releasing pipeline 16 through a sub-source pumping and releasing pipe 15, a grain slag conveying port 11 is connected with an automatic coal water discharging and sealing device through a grain slag conveying pipe 17, a grain slag conveying pipe connecting port 19 is connected with a hole opening extrusion expansion sealing device grain slag conveying port 11 through the grain slag conveying pipe 17, a second sub-source pumping and releasing port 20 is connected with a downhole pumping and releasing pipeline 34 through a sub-source pumping and releasing pipe 33, and a high-pressure gas decompression buffer device 31 is communicated with an automatic coal water discharging and sealing device connecting port 21 through a flexible conical connection 30;
through the steps, after the fixed installation is finished, the drilling machine 3 is operated to enable the drill bit 1 and the drill rod 2 to penetrate through the orifice extrusion expansion sealing device to carry out drilling construction; during drilling construction and hydraulic punching permeability increasing, the front section of the orifice extrusion expansion sealing device extrudes the high-molecular expansion rubber ring 5 at the expansion sealing part to be tightly contacted with the hole wall, the gap of the orifice of the drilled hole is blocked, gas is prevented from flowing into a roadway, the sealing rubber gasket 12 at the rotary sealing part of the rear end drill rod and the annular brush sealing part 13 are combined and sealed, the drill rod is tightly combined with the drill rod during rotary drilling, coal scraps in the drilled hole and the brush are integrated into a whole, and the sealing performance is improved; partial gas in the drill hole is pumped into an underground temporary extraction pipeline 16 through a first branch source pumping and releasing port 10, and coal, water and partial gas in the hole enter a coal water automatic discharge sealing device through a grain slag conveying port 11; gas in the coal water automatic discharge sealing device is pumped into the underground extraction pipeline 34 through the second sub-source drainage port 20, when the instantaneous gas emission amount of a drill hole is large, the gas enters the high-pressure gas pressure reduction buffer device 31 through the connecting port 21, the high-pressure gas pressure reduction buffer device 31 can stretch out and draw back according to the gas amount emitted in the drill hole during drilling, a temporary buffer effect is achieved through volume change, and the hard framework 32 prevents the device from being deformed due to negative pressure caused by connection of the drainage pipeline, so that the use problem is influenced; the mixture of coal and water enters a rotary seal cavity 24 through a conical grain slag conveying box 22, and drives a hard rotary blade 27 to rotate to a lower coal water discharge port 25 under the action of gravity, so that the mixture is discharged out of the device; the rotary seal cavity 24 is equally divided into three relatively independent spaces by the hard rotary blade 27 and the flexible seal rubber pad 28 in the rotary seal device, and at least 1 scraper blade is always ensured to separate the cavity between the upper inlet and the lower coal water discharge port 25 during the rotation of the hard rotary blade 27 so as to keep the coal water gas separation device in a closed state all the time
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a sealed buffering of drilling construction operation in pit prevents transfinite protection system, includes the extrusion expansion sealing device, the automatic sealing device that discharges of coal water, high-pressure gas decompression buffer in drill way, extrusion expansion sealing device links to each other with the automatic discharging device of coal water, the automatic discharging device of coal water links to each other its characterized in that with high-pressure gas shock attenuation buffer: the extrusion expansion sealing device comprises a sleeve and a blowout prevention cavity, wherein the front end of the sleeve is provided with a step, the outer wall of the sleeve is smooth, an external thread is integrally formed in the middle of the sleeve, the rear end of the sleeve is provided with a fixed thread, a high polymer expansion ring, a pushing cylinder and a rotating handle are sequentially arranged outside the sleeve, the rotating handle is in threaded connection with the middle of the sleeve, the sleeve is connected to the blowout prevention cavity through the fixed thread, and the high polymer expansion rubber ring, the pushing cylinder and the rotating handle are sequentially abutted;
the automatic coal water discharging and sealing device comprises a coal water gas separation box and a rotary sealing cavity, wherein the coal water gas separation box is imported and is connected with an outlet of the blowout prevention cavity, the rotary sealing box is arranged at the lower part of the coal water gas separation box, a rotary shaft is arranged in the rotary sealing cavity, a hard rotary blade is arranged on the rotary shaft, a flexible sealing rubber mat is arranged between the rotary blade and the rotary sealing cavity, and the flexible sealing rubber mat is wrapped around the rotary blade.
2. The sealed buffering anti-overrun protection system for downhole drilling construction operation according to claim 1, characterized in that: the upper side and the lower side of the blowout prevention cavity are respectively and integrally formed with a source-dividing extraction port and a grain slag conveying port, a drill rod sealing rotary sealing part is arranged at the rear end of the blowout prevention cavity and comprises a sealing rubber gasket, an annular brush sealing part and a fixing chuck, and the drill rod sealing rotary sealing part comprises a sealing rubber gasket, an annular brush sealing part and a fixing chuck which are sequentially connected at the rear end of the blowout prevention cavity.
3. The sealed buffering anti-overrun protection system for downhole drilling construction operation according to claim 2, characterized in that: the outlet of the source-dividing extraction opening is connected with a first source-dividing extraction pipe, the outlet of the first source-dividing extraction pipe is connected with an underground temporary extraction pipeline, the outlet of the grain slag conveying opening is connected with a grain slag conveying pipe, and the outlet of the grain slag conveying pipe is connected with the inlet of the automatic coal water discharge sealing device.
4. The sealed buffering anti-overrun protection system for downhole drilling construction operation according to claim 1, characterized in that: the coal-water-gas separation tank is characterized in that a source separation pumping-releasing port is integrally formed in the top of the coal-water-gas separation tank, an outlet of the source separation pumping-releasing port is connected with a second source separation pumping pipe, an outlet of the second source separation pumping pipe is connected with a downhole pumping pipeline, a conical granulated slag conveying tank is integrally formed at the bottom of the coal-water-gas separation tank, a flange is arranged at the bottom of the conical granulated slag conveying tank, and the conical granulated slag conveying tank is connected to an inlet of a rotary sealing cavity through the flange.
5. The sealed buffering anti-overrun protection system for downhole drilling construction operation according to claim 1, characterized in that: the coal water gas separator box is characterized in that an outlet on one side of the coal water gas separator box is connected to an inlet of a high-pressure gas decompression buffer device, the high-pressure gas decompression buffer device comprises a flexible buffer bag and a plurality of hard frameworks, the hard frameworks are uniformly distributed in the buffer bag, an inlet of the flexible buffer bag is in a conical shape, and the flexible buffer bag is made of antistatic and foldable materials.
6. The sealed buffering anti-overrun protection system for downhole drilling construction operation according to claim 1, characterized in that: the rotary vanes are provided with at least 3 vanes, included angles formed by the vanes are consistent, a coal water discharge port is arranged at the bottom of the rotary seal cavity, and the diameter of the coal water discharge port is not larger than the linear distance between the tops of the adjacent vanes.
7. The sealed buffering anti-overrun protection system for downhole drilling construction operation according to claim 1, characterized in that: the rotary blade is provided with a fixing nut, and the flexible sealing rubber gasket is fixedly connected to the rotary blade through the fixing nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911238621.2A CN110821395A (en) | 2019-12-06 | 2019-12-06 | Sealed buffering of borehole construction operation prevents transfinite protection system in pit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911238621.2A CN110821395A (en) | 2019-12-06 | 2019-12-06 | Sealed buffering of borehole construction operation prevents transfinite protection system in pit |
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| CN110821395A true CN110821395A (en) | 2020-02-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364946A (en) * | 2020-03-18 | 2020-07-03 | 河南理工大学 | Airfoil type gas-water-slag separation device with drill rod sealing function and using method thereof |
| CN113123822A (en) * | 2021-04-20 | 2021-07-16 | 焦作煤业（集团）新乡能源有限公司 | Regional coal receiving device that verifies of high mining height stope face |
| CN115199235A (en) * | 2022-07-15 | 2022-10-18 | 山东省煤田地质局第一勘探队 | Normally-sealed blowout preventer for drilling equipment and blowout prevention method |
| CN115199317A (en) * | 2022-07-14 | 2022-10-18 | 山西沁新能源集团股份有限公司 | Device and method for preventing overrun-proof water-gas-slag separation during underground drilling of coal mine |
-
2019
- 2019-12-06 CN CN201911238621.2A patent/CN110821395A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364946A (en) * | 2020-03-18 | 2020-07-03 | 河南理工大学 | Airfoil type gas-water-slag separation device with drill rod sealing function and using method thereof |
| CN111364946B (en) * | 2020-03-18 | 2024-01-19 | 河南理工大学 | Wing type air-water-slag separation device with drill rod sealing function and application method thereof |
| CN113123822A (en) * | 2021-04-20 | 2021-07-16 | 焦作煤业（集团）新乡能源有限公司 | Regional coal receiving device that verifies of high mining height stope face |
| CN115199317A (en) * | 2022-07-14 | 2022-10-18 | 山西沁新能源集团股份有限公司 | Device and method for preventing overrun-proof water-gas-slag separation during underground drilling of coal mine |
| CN115199317B (en) * | 2022-07-14 | 2024-03-12 | 山西沁新能源集团股份有限公司 | Device and method for preventing overrun water, gas and slag separation during underground coal mine drilling |
| CN115199235A (en) * | 2022-07-15 | 2022-10-18 | 山东省煤田地质局第一勘探队 | Normally-sealed blowout preventer for drilling equipment and blowout prevention method |
| CN115199235B (en) * | 2022-07-15 | 2023-09-29 | 山东省煤田地质局第一勘探队 | Normally-closed blowout preventer for drilling equipment and blowout prevention method |
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