CN114151038A - Automatic water absorption plugging and hole sealing device for coal bed gas extraction drill hole - Google Patents
Automatic water absorption plugging and hole sealing device for coal bed gas extraction drill hole Download PDFInfo
- Publication number
- CN114151038A CN114151038A CN202111497502.6A CN202111497502A CN114151038A CN 114151038 A CN114151038 A CN 114151038A CN 202111497502 A CN202111497502 A CN 202111497502A CN 114151038 A CN114151038 A CN 114151038A
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- plugging
- adjusting
- lifting
- block
- blocking
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000003245 coal Substances 0.000 title claims abstract description 29
- 238000007789 sealing Methods 0.000 title claims abstract description 26
- 238000000605 extraction Methods 0.000 title claims abstract description 22
- 238000010521 absorption reaction Methods 0.000 title claims description 15
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 24
- 238000005086 pumping Methods 0.000 claims abstract description 21
- 230000000903 blocking effect Effects 0.000 claims description 64
- 238000005553 drilling Methods 0.000 claims description 14
- 239000000725 suspension Substances 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 210000003437 trachea Anatomy 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000003651 drinking water Substances 0.000 claims description 3
- 235000020188 drinking water Nutrition 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000005065 mining Methods 0.000 abstract description 20
- 239000007789 gas Substances 0.000 description 26
- 239000011435 rock Substances 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- 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
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an automatic water-absorbing, plugging and hole-sealing device for a coal bed gas extraction drill hole, which comprises a plugging block, wherein a water pumping pipe penetrates through the middle of the plugging block, an adjusting plug is arranged below the plugging block, an adjusting mechanism is arranged between the adjusting plug and the plugging block, the adjusting mechanism comprises a lifting sleeve, the bottom end of the lifting sleeve is connected with the adjusting plug, a lifting ring is arranged on the inner side of the top end of the lifting sleeve, a lifting screw rod penetrates through the middle of the lifting ring, and the top end of the lifting screw rod is inserted into the bottom end of the plugging block. According to the invention, the adjusting plug, the plugging block, the water pumping pipe, the anti-skid plugging mechanism, the slotting mechanism, the reinforcing plugging mechanism and the adjusting mechanism are arranged, so that the mining drill hole can be quickly and efficiently plugged, accumulated water in the mining drill hole can be pumped out, the working efficiency is effectively improved, and the device is ensured not to slide.
Description
Technical Field
The invention relates to the technical field of coal mine gas extraction drill hole plugging, in particular to an automatic water absorption plugging and hole sealing device for a coal seam gas extraction drill hole.
Background
With the rapid development of social economy, coal mine gas is also called coal bed gas and coal bed gas, and is mixed gas consisting of methane, carbon dioxide, nitrogen and the like escaping from coal and surrounding rocks, wherein the gas is a harmful factor in coal mine production, and not only pollutes air, but also when the content of the gas in the air is 5-16%, the gas can cause explosion when meeting fire, thereby causing accidents.
However, when the existing coal mine gas is exploited, the exploitation borehole cannot be effectively plugged and accumulated water in the exploitation borehole can not be effectively extracted, so that the working efficiency of coal mine gas exploitation is influenced; therefore, the existing requirements are not met, and the automatic water absorption plugging and hole sealing device for the coal bed gas extraction drill hole is provided.
Disclosure of Invention
The invention aims to provide an automatic water-absorbing, plugging and hole-sealing device for a coal bed gas extraction drill hole, which aims to solve the problems that the working efficiency of coal mine gas extraction is influenced and the like because the existing coal mine gas provided by the background technology cannot effectively plug the extraction drill hole and extract accumulated water in the extraction drill hole during the coal mine gas extraction.
In order to achieve the purpose, the invention provides the following technical scheme: an automatic water absorption plugging and hole sealing device for a coal bed gas extraction drill hole comprises a plugging block, wherein a water pumping pipe penetrates through the middle of the plugging block, an adjusting plug is arranged below the plugging block, an adjusting mechanism is arranged between the adjusting plug and the plugging block and comprises a lifting sleeve, the bottom end of the lifting sleeve is connected with the adjusting plug, a lifting ring is arranged on the inner side of the top end of the lifting sleeve, a lifting screw penetrates through the middle of the lifting ring, the top end of the lifting screw is inserted into the bottom end of the plugging block, and the bottom end of the water pumping pipe penetrates through the lifting screw and extends to the inside of the adjusting plug;
the water pumping device is characterized in that a grooving mechanism is arranged inside the upper end of the blocking block and comprises a driving motor, a driving gear is arranged at the end part of the driving motor, a gear ring meshed with the driving gear is arranged on the outer side of the driving gear, the axis of the gear ring is overlapped with the axis of a water pumping pipe, a rotating seat is arranged on the outer side of the gear ring, four telescopic rods are arranged on the outer side of the rotating seat, a grooving cutter is arranged at the end part of each telescopic rod and can extend to the outer side of the blocking block, a rotary dustproof ring is arranged on the outer side of the end part of each telescopic rod connected with the grooving cutter, and the upper surface and the lower surface of the rotary dustproof ring are smooth and are in sliding connection with the blocking block;
a reinforcing and blocking mechanism is arranged below the slotting cutter, the reinforcing and blocking mechanism comprises four adjusting motors, adjusting gears are arranged at the end parts of the adjusting motors, sleeve gears meshed with the adjusting gears are arranged above the adjusting gears, an internal thread sleeve is arranged in the middle of each sleeve gear in a penetrating manner, an adjusting screw rod is arranged in the middle of each internal thread sleeve in a penetrating manner, one end of each adjusting screw rod penetrates through the inner wall of each blocking block and extends to the outer part of each blocking block, blocking pieces are arranged at the end parts of the outer ends of the adjusting screw rods, the circle centers of the four blocking pieces are coaxial with the circle center of the gear ring, expansion blocks are arranged inside the two symmetrical blocking pieces, connecting pieces are arranged on the outer sides of the two ends of each expansion block, and one end of each connecting piece is flush with one end of each blocking piece;
the below of jam piece is provided with two and strengthens jam mechanism, it includes compressed gas storage storehouse to strengthen jam mechanism, the bottom that compressed gas stored storehouse is provided with connects the trachea, the tip inboard of connecting trachea and compressed gas storage storehouse and being connected is provided with the solenoid valve, it is provided with the second gasbag to connect the tracheal other end, second gasbag joint is in the outer wall of jam piece.
Preferably, the bottom surface of the adjusting plug is provided with a movable sealing bottom cover, one end of the movable sealing bottom cover is provided with a shaft pin in a penetrating mode, two ends of the shaft pin are movably inserted into the inner wall of the bottom surface of the adjusting plug in a inserting mode, and the outer sides of the two ends of the shaft pin are respectively sleeved with a torsion spring.
Preferably, the drinking-water pipe is pegged graft and is provided with anti-skidding blocking mechanism around the inside bottom of adjusting the end cap, anti-skidding blocking mechanism includes the electro-magnet, the outside of electro-magnet is provided with four movable connecting plates, the connecting plate is inlayed towards the surface of electro-magnet and is provided with the permanent magnet, be provided with the connecting rod in the middle of the opposite side surface of connecting plate, the other end of connecting rod runs through the wall body of adjusting the end cap and extends to the outside of adjusting the end cap, the outer end terminal surface of connecting rod is provided with the reinforcement arc, the centre of reinforcing arc and adjusting the end cap is provided with first gasbag.
Preferably, a plurality of conical protrusions are uniformly arranged on the outer surface of the reinforcing arc plate, and the conical protrusions and the reinforcing arc plate are integrally cast and molded.
Preferably, the upper end and the lower end of the connecting plate are both provided with ejection sliders, guide rods penetrate through the middles of the ejection sliders, and ejection springs are sleeved on the outer sides of one ends of the guide rods.
Preferably, a through hole penetrates through the middle of the lifting screw rod, the inner diameter of the through hole is larger than the outer diameter of the water pumping pipe, a suspension ring is arranged on the outer surface of the end part of the lifting screw rod, which is inserted into the bottom end of the blocking block, the suspension ring is clamped in the blocking block, and balls are embedded in the outer surface of the suspension ring.
Preferably, a limiting sliding block is arranged on one side of the top end of the lifting sleeve, a limiting rod penetrates through one end of the limiting sliding block, and the top end of the limiting rod is fixed to the bottom surface of the blocking block.
Preferably, the bottom surface of roating seat is provided with the support ring, the surface of support ring is inlayed and is provided with the ball.
Preferably, the inner side surface of the lifting ring is provided with threads which have the same rotating direction as the outer surface of the lifting screw, and the lifting ring and the lifting screw are in threaded transmission.
Preferably, the maximum thickness of the large end of the slotting cutter is consistent with the thickness of the plugging sheet, and the large end of the slotting cutter is fixed with the end of the telescopic rod through welding.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the grooving cutter rotates along with the rotating seat and is driven by the telescopic rod to enter the rock stratum on the inner wall of the mining drilling hole, the annular groove is mined on the rock stratum on the inner wall of the mining drilling hole, then the four plugging pieces extend out of the outer wall of the plugging block under the adjusting screw rod and are clamped in the mined annular groove, meanwhile, compressed air inside the connecting air pipe enters the second air bag and enables the second air bag to expand, and the expanded second air bag is clamped in the annular groove, so that the mining drilling hole can be quickly and efficiently plugged, accumulated water in the mining drilling hole can be pumped out by moving the water pumping pipe downwards, and the working efficiency is effectively improved;
2. according to the invention, after the position of the blocking block is fixed, the power supply of the electromagnet is disconnected, so that the electromagnet loses the magnetic adsorption capacity on the permanent magnet, at the moment, the elastic recovery of the pop-up spring drives the pop-up slider to slide on the outer side of the guide rod, the pop-up slider drives the connecting plate to be away from the electromagnet, and the connecting rod drives the reinforcing arc plate to be away from the adjusting plug, so that the outer surface of the reinforcing arc plate is attached to the inner wall of the mining drilling hole, the conical protrusion on the outer surface of the reinforcing arc plate is inserted into the rock layer on the inner wall of the mining drilling hole, meanwhile, the first air bag is inflated and expanded, the sliding of the device after the position of the blocking block is fixed can be ensured, and the gap between the adjusting plug and the mining drilling hole can be filled through the inflation and expansion of the first air bag, so that the sealing performance of the device is further enhanced.
Drawings
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a cross-sectional view of the present invention in its entirety;
FIG. 3 is a schematic structural diagram of the notching mechanism of the present invention;
FIG. 4 is a schematic structural view of a reinforcing plugging mechanism according to the present invention;
FIG. 5 is a schematic structural view of the anti-slip mechanism of the present invention;
FIG. 6 is an enlarged view of the structure of FIG. 2 at A according to the present invention;
FIG. 7 is an enlarged view of the structure of FIG. 2 at B in accordance with the present invention;
fig. 8 is an enlarged view of the structure of fig. 2 at C according to the present invention.
In the figure: 1. adjusting the plug; 2. a plugging block; 3. a water pumping pipe; 4. an anti-slip blocking mechanism; 401. reinforcing the arc-shaped plate; 402. a first air bag; 403. an electromagnet; 404. a permanent magnet; 405. a connecting plate; 406. a connecting rod; 407. popping up the sliding block; 408. a guide bar; 409. ejecting a spring; 5. a grooving mechanism; 501. slotting cutters; 502. a telescopic rod; 503. rotating the dustproof ring; 504. a rotating base; 505. a gear ring; 506. a drive gear; 507. a drive motor; 508. a support ring; 6. a reinforcing and blocking mechanism; 601. a blocking sheet; 602. an expansion block; 603. connecting sheets; 604. adjusting the screw rod; 605. an internally threaded sleeve; 606. a sleeve gear; 607. an adjusting gear; 608. adjusting the motor; 7. a reinforcing blocking mechanism; 701. a second air bag; 702. connecting an air pipe; 703. a compressed gas storage bin; 704. an electromagnetic valve; 8. an adjustment mechanism; 801. a lifting sleeve; 802. a lifting screw; 803. a lifting ring; 804. a suspension ring; 805. a limiting slide block; 806. a restraining bar; 9. and the bottom cover is movably sealed.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The drive motor 507 (model numbers ncv28-400-60C) and the adjustment motor 608 (model numbers 6IK180W-200W) of the present invention are commercially available or custom made.
Referring to fig. 1 to 8, an embodiment of the present invention includes: an automatic water absorption plugging and hole sealing device for a coal bed gas extraction drill hole comprises a plugging block 2, a water pumping pipe 3 penetrates through the middle of the plugging block 2, an adjusting plug 1 is arranged below the plugging block 2, an adjusting mechanism 8 is arranged between the adjusting plug 1 and the plugging block 2, the adjusting mechanism 8 comprises a lifting sleeve 801, the bottom end of the lifting sleeve 801 is connected with the adjusting plug 1, a lifting ring 803 is arranged on the inner side of the top end of the lifting sleeve 801, a lifting screw 802 penetrates through the middle of the lifting ring 803, the top end of the lifting screw 802 is inserted into the bottom end of the plugging block 2, and the bottom end of the water pumping pipe 3 penetrates through the lifting screw 802 and extends to the inside of the adjusting plug 1;
the slotting mechanism 5 is arranged inside the upper end of the plugging block 2, the slotting mechanism 5 comprises a driving motor 507, a driving gear 506 is arranged at the end part of the driving motor 507, a gear ring 505 meshed with the driving gear 506 is arranged outside the driving gear 506, the axis of the gear ring 505 is overlapped with the axis of the water pumping pipe 3, a rotating seat 504 is arranged outside the gear ring 505, four telescopic rods 502 are arranged outside the rotating seat 504, a slotting cutter 501 is arranged at the end part of each telescopic rod 502, the slotting cutter 501 can extend to the outside of the plugging block 2, a rotary dustproof ring 503 is arranged outside the end part of each telescopic rod 502 connected with the slotting cutter 501, and the upper surface and the lower surface of the rotary dustproof ring 503 are smooth and are in sliding connection with the plugging block 2;
a reinforcing and blocking mechanism 6 is arranged below the slotting cutter 501, the reinforcing and blocking mechanism 6 comprises four adjusting motors 608, adjusting gears 607 are arranged at the end parts of the adjusting motors 608, sleeve gears 606 meshed with the adjusting gears 607 are arranged above the adjusting gears 607, an internal thread sleeve 605 is arranged in the middle of each sleeve gear 606 in a penetrating manner, an adjusting screw 604 is arranged in the middle of each internal thread sleeve 605 in a penetrating manner, one end of each adjusting screw 604 penetrates through the inner wall of the blocking block 2 and extends to the outside of the blocking block 2, blocking pieces 601 are arranged at the end parts of the outer ends of the adjusting screws 604, the circle centers of the four blocking pieces 601 are coaxial with the circle center of the gear ring 505, expansion blocks 602 are arranged inside the two symmetrical blocking pieces 601, connecting pieces 603 are arranged on the outer sides of the two ends of each expansion block 602, and one end of each connecting piece 603 is flush with one end of each blocking piece 601;
the below of jam piece 601 is provided with two and strengthens jam mechanism 7, strengthens jam mechanism 7 and includes that compressed gas stores the storehouse 703, and the bottom that compressed gas stored the storehouse 703 is provided with and connects trachea 702, connects the tip inboard that trachea 702 and compressed gas store the storehouse 703 and be connected and is provided with solenoid valve 704, and the other end of connecting trachea 702 is provided with second gasbag 701, and second gasbag 701 joint is in the outer wall of jam piece 2.
Further, the bottom surface of the adjusting plug 1 is provided with a movable sealing bottom cover 9, one end of the movable sealing bottom cover 9 penetrates through and is provided with a shaft pin, two ends of the shaft pin are movably inserted into the inner wall of the bottom surface of the adjusting plug 1, the outer sides of two ends of the shaft pin are sleeved with torsion springs, the movable sealing bottom cover 9 can ensure that the bottom of the adjusting plug 1 keeps sealed when the water pumping pipe 3 does not pump water, and the water pumping pipe 3 is not influenced to stretch out from the bottom surface of the adjusting plug 1.
Further, an anti-slip blocking mechanism 4 is arranged around the bottom end of the water pumping pipe 3 inserted in the adjusting plug 1, the anti-slip blocking mechanism 4 comprises an electromagnet 403, four movable connecting plates 405 are arranged on the outer side of the electromagnet 403, a permanent magnet 404 is embedded on the surfaces, facing the electromagnet 403, of the connecting plates 405, a connecting rod 406 is arranged in the middle of the other side surface of the connecting plates 405, the other end of the connecting rod 406 penetrates through the wall body of the adjusting plug 1 and extends to the outer side of the adjusting plug 1, a reinforcing arc plate 401 is arranged on the end face of the outer end of the connecting rod 406, a first air bag 402 is arranged between the reinforcing arc plate 401 and the adjusting plug 1, the reinforcing arc plate 401 is driven by the connecting rod 406 to eject out the adjusting plug 1, the reinforcing arc plate 401 is fixed on the inner wall of the mining hole, then the first air bag 402 expands after being inflated to seal the adjusting plug 1 and the middle of the mining hole, and ensures that the adjusting plug 1 cannot easily slide.
Further, the surface align to grid of consolidating arc 401 has a plurality of toper protruding, and the toper is protruding to be cast the shaping through integration with consolidating arc 401, and the toper is protruding when consolidating arc 401 and adopting the drilling inner wall laminating, can peg graft and adopt the drilling inboard, consolidates between consolidating arc 401 and adopting the drilling inner wall, avoids consolidating arc 401 and appears sliding.
Further, the upper end and the lower end of the connecting plate 405 are provided with ejection sliders 407, a guide rod 408 penetrates through the middle of the ejection sliders 407, an ejection spring 409 is sleeved on the outer side of one end of the guide rod 408, and when the permanent magnet 404 is magnetically attracted by the ejection spring 409 and the ejection sliders 407 through the connecting rod 406, the ejection spring 409 can drive the ejection sliders 407 to move so as to attach the reinforcing arc-shaped plate 401 to the inner wall of the drilling hole.
Further, the middle of the lifting screw 802 is provided with a through hole in a penetrating mode, the inner diameter of the through hole is larger than the outer diameter of the water pumping pipe 3, the lifting screw 802 is inserted into the outer surface of the end portion of the bottom end of the blocking block 2 in a connected mode and is provided with a suspension ring 804, the suspension ring 804 is clamped in the blocking block 2, balls are embedded in the outer surface of the suspension ring 804, the suspension ring 804 embedded with the balls supports the lifting screw 802 in a suspended mode, and friction resistance between the lifting screw 802 and the blocking block 2 is effectively reduced.
Furthermore, a limiting slider 805 is arranged on one side of the top end of the lifting sleeve 801, a limiting rod 806 is arranged at one end of the limiting slider 805 in a penetrating manner, the top end of the limiting rod 806 is fixed with the bottom surface of the blocking block 2, and the limiting slider 805 and the limiting rod 806 can limit the movement modes of the lifting ring 803 and the lifting sleeve 801 when the lifting screw 802 rotates, so that the lifting ring 803 can only drive the lifting sleeve 801 to move up and down, and the lifting ring 803 cannot rotate along with the lifting screw 802.
Further, the bottom surface of the rotating base 504 is provided with a support ring 508, and balls are embedded on the outer surface of the support ring 508, so that the lifting ring 803 can move up and down along the axial direction of the lifting screw 802 when the lifting screw 802 rotates, and the lifting ring 803 can drive the lifting sleeve 801 to move synchronously.
Further, the inner side surface of the lifting ring 803 is provided with threads which are the same as the outer surface of the lifting screw 802 in the rotating direction, and the lifting ring 803 and the lifting screw 802 are in thread transmission, so that the lifting ring 803 can move up and down along the axial direction of the lifting screw 802 when the lifting screw 802 rotates, and the lifting ring 803 can drive the lifting sleeve 801 to move synchronously.
Further, the maximum thickness of the large end of the slotting cutter 501 is consistent with the thickness of the blocking piece 601, and the large end of the slotting cutter 501 is fixed with the end of the telescopic rod 502 by welding, so that the blocking piece 601 can be smoothly clamped into the inner side of a clamping groove formed by the slotting cutter 501 when extending out of the blocking block 2.
The working principle is as follows: when the device is used, firstly, the plugging block 2 and the adjusting plug 1 are placed into the inner side of a mined mining borehole by using equipment, when the plugging block 2 reaches a certain depth, the telescopic rod 502 is started to enable the telescopic rod 502 to drive the slotting cutter 501 to extend out of the outer wall of the plugging block 2, the extended slotting cutter 501 is inserted into the inner wall of the mining borehole, when the slotting cutter 501 is gradually inserted into the inner wall rock stratum of the mining borehole, the power supply of the driving motor 507 is switched on and started, the driving motor 507 drives the driving gear 506 to rotate so that the rotary seat 504 of the gear ring 505 rotates, at the moment, the rotary seat 504 drives the four telescopic rods 502 and the slotting cutter 501 to rotate around the axis of the gear ring 505, the slotting cutter 501 which is gradually inserted into the inner wall rock stratum of the mining borehole is rotated and inserted, and an annular groove is mined for the inner wall rock stratum of the mining borehole;
after the annular grooves are opened, stopping driving the motor 507, retracting the slotting cutter 501 into the outer wall of the blocking block 2, moving the blocking block 2 upwards for a certain distance, wherein the distance is the distance between the blocking sheet 601 and the second air bag 701, repeating the operation that the slotting cutter 501 rotates and is inserted into the inner wall rock stratum of the mining drill hole, and opening three annular grooves on the inner wall rock stratum of the mining drill hole in total;
then, the power supply of the adjusting motor 608 is switched on and started, so that the adjusting motor 608 drives the adjusting gear 607 and the sleeve gear 606 to rotate, the internal thread sleeve 605 synchronously rotates, at the moment, the internal thread sleeve 605 can enable the adjusting screw 604 to move along the axis of the internal thread sleeve 605 through the thread transmission with the adjusting screw 604, and the plugging piece 601 is pushed out from the outer wall of the plugging block 2, so that the plugging piece 601 extending out of the outer wall of the plugging block 2 is clamped at the inner side of the uppermost annular groove of the three annular grooves, and the expansion block 602 expands and extrudes the two connecting pieces 603 positioned inside the plugging piece 601 from the end part of the plugging piece 601 in the process that the plugging piece 601 enters the annular groove, so that the end surface of the connecting piece 603 is always attached to the end part of the other plugging piece 601;
when the blocking piece 601 is inserted into the inner side of the annular groove, the electromagnetic valve 704 is opened, at this time, the compressed air in the compressed air storage bin 703 can enter the second air bag 701 along the connecting air pipe 702, the second air bag 701 can expand due to the entering of the compressed air, but due to the limitation of the blocking block 2, the expanded second air bag 701 can extend out from the outer wall of the blocking block 2 and be clamped into the inner side of the annular groove attached to the outer wall of the blocking block 2, the slotted cutter 501 rotates along with the rotating seat 504 and under the driving of the telescopic rod 502 to enter the inner wall rock stratum of the mining borehole, the annular groove is mined from the inner wall rock stratum of the mining borehole, then the four blocking pieces 601 extend out from the outer wall of the blocking block 2 under the adjusting screw 604 and are clamped in the mined annular groove, and simultaneously the compressed air in the connecting air pipe 702 enters the second air bag 701 and expands the second air bag 701, and the same joint of second gasbag 701 after the inflation is in the ring channel, can be quick carry out quick, efficient jam to adopting the drilling, and can take out the inside ponding of adopting the drilling through moving the drinking-water pipe 3 down, effectual improvement work efficiency.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides an automatic shutoff hole sealing device that absorbs water of coal seam gas drainage drilling, includes plugging block (2), its characterized in that: a water pumping pipe (3) penetrates through the middle of the blocking block (2), an adjusting plug (1) is arranged below the blocking block (2), an adjusting mechanism (8) is arranged between the adjusting plug (1) and the blocking block (2), the adjusting mechanism (8) comprises a lifting sleeve (801), the bottom end of the lifting sleeve (801) is connected with the adjusting plug (1), a lifting ring (803) is arranged on the inner side of the top end of the lifting sleeve (801), a lifting screw (802) penetrates through the middle of the lifting ring (803), the top end of the lifting screw (802) is inserted into the bottom end of the blocking block (2), and the bottom end of the water pumping pipe (3) penetrates through the lifting screw (802) and extends into the adjusting plug (1);
a slotting mechanism (5) is arranged inside the upper end of the plugging block (2), the slotting mechanism (5) comprises a driving motor (507), a driving gear (506) is arranged at the end part of the driving motor (507), a gear ring (505) meshed with the driving gear (506) is arranged at the outer side of the driving gear (506), the axis of the gear ring (505) is coincident with the axis of the water pumping pipe (3), a rotating seat (504) is arranged on the outer side of the gear ring (505), four telescopic rods (502) are arranged on the outer side of the rotating seat (504), a slotting cutter (501) is arranged at the end part of each telescopic rod (502), the slotting cutter (501) can extend to the outer side of the plugging block (2), the outer sides of the ends of the four telescopic rods (502) connected with the slotting cutter (501) are provided with rotary dustproof rings (503), the upper surface and the lower surface of the rotary dustproof ring (503) are smooth and are in sliding connection with the blocking block (2);
a reinforcing and blocking mechanism (6) is arranged below the slotting cutter (501), the reinforcing and blocking mechanism (6) comprises four adjusting motors (608), adjusting gears (607) are arranged at the end parts of the adjusting motors (608), sleeve gears (606) meshed with the adjusting gears (607) are arranged above the adjusting gears (607), internal thread sleeves (605) penetrate through the middles of the sleeve gears (606), adjusting screw rods (604) penetrate through the middles of the internal thread sleeves (605), one ends of the adjusting screw rods (604) penetrate through the inner wall of the blocking block (2) and extend to the outside of the blocking block (2), blocking pieces (601) are arranged at the end parts of the outer ends of the adjusting screw rods (604), the circle centers of the four blocking pieces (601) are coaxial with the circle center of the gear ring (505), and expansion blocks (602) are arranged inside the two symmetrical blocking pieces (601), connecting pieces (603) are arranged on the outer sides of two ends of the expansion block (602), and one end of each connecting piece (603) is flush with one end of each blocking piece (601);
the below of jam piece (601) is provided with two and strengthens jam mechanism (7), it stores storehouse (703) including compressed gas to strengthen jam mechanism (7), the bottom of compressed gas storage storehouse (703) is provided with connects trachea (702), the tip inboard of connecting trachea (702) and compressed gas storage storehouse (703) and being connected is provided with solenoid valve (704), the other end of connecting trachea (702) is provided with second gasbag (701), second gasbag (701) joint is in the outer wall of jam piece (2).
2. The automatic water absorption plugging and hole sealing device for the coal bed gas extraction drill hole according to claim 1, is characterized in that: the bottom surface of the adjusting plug (1) is provided with a movable sealing bottom cover (9), one end of the movable sealing bottom cover (9) penetrates through a shaft pin, two ends of the shaft pin are movably inserted into the inner wall of the bottom surface of the adjusting plug (1), and torsion springs are sleeved on the outer sides of the two ends of the shaft pin.
3. The automatic water absorption plugging and hole sealing device for the coal bed gas extraction drill hole according to claim 1, is characterized in that: the utility model discloses a water pumping pipe, including drinking water pipe (3), anti-skidding blocking mechanism (4) are provided with around the bottom of adjusting end cap (1) inside in pegging graft, anti-skidding blocking mechanism (4) include electro-magnet (403), the outside of electro-magnet (403) is provided with four movable connecting plates (405), connecting plate (405) are inlayed towards the surface of electro-magnet (403) and are provided with permanent magnet (404), be provided with connecting rod (406) in the middle of the opposite side surface of connecting plate (405), the other end of connecting rod (406) runs through the wall body of adjusting end cap (1) and extends to the outside of adjusting end cap (1), the outer end terminal surface of connecting rod (406) is provided with reinforcement arc (401), reinforcement arc (401) and the centre of adjusting end cap (1) are provided with first gasbag (402).
4. The automatic water absorption plugging and hole sealing device for the coal bed gas extraction drill hole according to claim 3, characterized in that: the outer surface of the reinforcing arc-shaped plate (401) is uniformly provided with a plurality of conical protrusions, and the conical protrusions and the reinforcing arc-shaped plate (401) are integrally cast and molded.
5. The automatic water absorption plugging and hole sealing device for the coal bed gas extraction drill hole according to claim 3, characterized in that: the upper end and the lower end of the connecting plate (405) are both provided with ejection sliding blocks (407), the middle of each ejection sliding block (407) is provided with a guide rod (408) in a penetrating mode, and an ejection spring (409) is sleeved on the outer side of one end of each guide rod (408).
6. The automatic water absorption plugging and hole sealing device for the coal bed gas extraction drill hole according to claim 1, is characterized in that: the middle of the lifting screw (802) penetrates through a through hole, the inner diameter of the through hole is larger than the outer diameter of the water pumping pipe (3), the lifting screw (802) is inserted into the outer surface of the end part of the bottom end of the plugging block (2) and is provided with a suspension ring (804), the suspension ring (804) is clamped in the plugging block (2), and balls are embedded in the outer surface of the suspension ring (804).
7. The automatic water absorption plugging and hole sealing device for the coal bed gas extraction drill hole according to claim 1, is characterized in that: one side of the top end of the lifting sleeve (801) is provided with a limiting sliding block (805), one end of the limiting sliding block (805) is provided with a limiting rod (806) in a penetrating mode, and the top end of the limiting rod (806) is fixed to the bottom face of the blocking block (2).
8. The automatic water absorption plugging and hole sealing device for the coal bed gas extraction drill hole according to claim 1, is characterized in that: the bottom surface of the rotating seat (504) is provided with a support ring (508), and the outer surface of the support ring (508) is embedded with balls.
9. The automatic water absorption plugging and hole sealing device for the coal bed gas extraction drill hole according to claim 1, is characterized in that: the inner side surface of the lifting ring (803) is provided with threads which have the same rotating direction as the outer surface of the lifting screw (802), and the lifting ring (803) and the lifting screw (802) are in thread transmission.
10. The automatic water absorption plugging and hole sealing device for the coal bed gas extraction drill hole according to claim 1, is characterized in that: the maximum thickness of the large end of the slotting cutter (501) is consistent with the thickness of the plugging sheet (601), and the large end of the slotting cutter (501) is fixed with the end of the telescopic rod (502) through welding.
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| CN202111497502.6A CN114151038B (en) | 2021-12-09 | 2021-12-09 | Automatic water-absorbing, plugging and hole-sealing device for coal bed gas extraction drilling |
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|---|---|---|---|
| CN202111497502.6A CN114151038B (en) | 2021-12-09 | 2021-12-09 | Automatic water-absorbing, plugging and hole-sealing device for coal bed gas extraction drilling |
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| CN114151038B CN114151038B (en) | 2023-07-18 |
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| CN114151038B (en) | 2023-07-18 |
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