CN109538211B - Automatic hydraulic exploitation drilling tool - Google Patents
Automatic hydraulic exploitation drilling tool Download PDFInfo
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- CN109538211B CN109538211B CN201910072767.8A CN201910072767A CN109538211B CN 109538211 B CN109538211 B CN 109538211B CN 201910072767 A CN201910072767 A CN 201910072767A CN 109538211 B CN109538211 B CN 109538211B
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- water gun
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- water
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- 238000005553 drilling Methods 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 170
- 239000002893 slag Substances 0.000 claims abstract description 27
- 238000007599 discharging Methods 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims description 18
- 238000005065 mining Methods 0.000 claims description 15
- 239000011435 rock Substances 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 12
- 239000012530 fluid Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 240000007643 Phytolacca americana Species 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C45/00—Methods of hydraulic mining; Hydraulic monitors
-
- 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
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
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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)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a drilling tool suitable for hydraulic exploitation of a drilled hole, in particular to an automatic hydraulic exploitation drilling tool, which comprises a top end cover, a single-acting bearing, a protection pipe, a bottom end cover, a high-pressure water conveying system, a water gun telescopic system and a slag discharging system, wherein the top end cover is provided with a water gun; according to the automatic hydraulic exploitation drilling tool, the water gun stretching angle is freely adjusted, the distance between a water gun nozzle and an ore bed can be controlled according to design, the problem that high-pressure water energy is suddenly weakened due to submerged jet flow is avoided, the purpose of improving the energy utilization rate of the high-pressure water jet flow is achieved, and finally the exploitation efficiency is improved; meanwhile, the water gun extending parameters can be set as required, so that the water gun can automatically extend according to the design parameters in the hydraulic exploitation process, the drilling hydraulic exploitation process is simplified, and the labor intensity of operators is reduced.
Description
Technical Field
The invention relates to a drilling tool suitable for hydraulic exploitation of a borehole, in particular to an automatic hydraulic exploitation drilling tool.
Background
The hydraulic mining technology for drilling holes is that firstly, holes are drilled in a target area, then a high-pressure water gun is placed at the depth of a target mineral deposit in the drilled holes, the energy carried by high-speed fluid ejected by high pressure is utilized to break rock, finally, the broken rock and drilling fluid form a solid-liquid mixture, the solid-liquid mixture is pumped to the ground surface by a ground surface device, and ore pulp is separated and extracted. The drilling hydraulic exploitation technology has the advantages of low exploitation cost, high production efficiency, small influence on the surrounding environment and the like. The high-pressure water nozzle of the traditional hydraulic exploitation drilling tool is fixed on the outer wall of the drilling tool, the position of the nozzle is not movable, and in the process that the radius of a broken area of a mineral seam gradually becomes larger, the resistance of drilling fluid and slag in the broken area received after high-pressure water is sprayed out is increased, so that the energy of breaking rock by the high-pressure water is rapidly reduced, and the production efficiency of hydraulic exploitation is greatly reduced.
In order to solve the above-mentioned problem, the prior patent document CN104018840a discloses a telescopic water gun based on a pawl locking mechanism, but the water gun can only be unlocked and retracted by an unlocking device when the water gun is opened to a maximum angle. "CN104005767A" discloses an automatically controlled flexible drilling tool for drilling hydraulic exploitation, but this drilling tool remote control technique is still imperfect, and step motor and reduction gear, controller operational environment are abominable, and the sealed environment is difficult to dispel the heat, and flexible position is in work under the ore pulp environment, and sealed requirement is high, fragile. "CN203961980U" discloses a telescopic water gun based on spring chuck control, but when the water gun works under the condition of drilling fluid, the clamping force is insufficient, the water gun is not reliably fixed, and when the water gun does not extend to the maximum angle, the water gun cannot be retracted; in addition, the hydraulic gun telescopic hydraulic exploitation drilling tool needs surface operation to achieve the extension of the hydraulic gun, so that the working procedures of the drilling hydraulic exploitation technology are increased, the labor intensity of operators is increased, and a novel technical scheme is needed in the prior art to solve the problem.
Disclosure of Invention
The technical scheme to be solved by the invention is as follows: the automatic hydraulic exploitation drilling tool is characterized in that a water gun extending parameter can be set as required in the hydraulic exploitation process, and the purpose that the water gun automatically extends according to the design parameter in the hydraulic exploitation process is achieved.
The invention adopts the following technical scheme: an automatic hydraulic mining drill, comprising: the device comprises a top end cover, a single-acting bearing, a protection tube, a bottom end cover, a high-pressure water conveying system, a water gun telescopic system and a slag discharging system;
the protection pipe is a hollow cylinder with two open ends, an opening which is axially arranged is arranged on the side wall of the protection pipe, and the top end of the protection pipe is in threaded connection with the drill string;
the top end cover is arranged at the upper part of the protection tube;
the outer ring of the single-acting bearing is fixed on the top end cover through a bearing seat, and the inner ring of the single-acting bearing is connected with the protection pipe;
the bottom end cover is in threaded connection with the bottom end of the protection tube;
the high-pressure water conveying system comprises a first high-pressure water pipe, a high-pressure rotary joint, a second high-pressure water pipe, a right-angle joint, a water gun high-pressure rotary joint and a water gun, wherein the top end of the first high-pressure water pipe penetrates through the top end cover to be in sealing connection with a ground surface high-pressure water source pipeline, meanwhile, the first high-pressure water pipe is fixed on the top end cover, and the bottom end of the first high-pressure water pipe is in sealing connection with a water inlet of the high-pressure rotary joint; the top end of the second high-pressure water pipe is in sealing connection with the water outlet of the high-pressure rotary joint, and the bottom end of the second high-pressure water pipe is in sealing connection with the water inlet of the right-angle joint; the water outlet of the right-angle joint is in sealing connection with the water inlet of the water gun high-pressure rotary joint, and the water outlet of the water gun high-pressure rotary joint is in sealing connection with the water gun;
the water gun telescopic system is arranged in the protection pipe and comprises a fixed plate, a stretching plate, a connecting rod, a push rod, a sliding plate, a rubber sleeve, balls, a pull rod, a fluted disc and a gear, wherein the fixed plate is welded on the first high-pressure water pipe; the top end of the ejector rod is pivoted with a clamping groove welded on the water gun through a pin key, and the bottom end of the ejector rod is pivoted with a clamping groove welded on the sliding plate through a pin key; the rubber sleeve is embedded into an annular clamping groove which is matched with the rubber sleeve in shape and is arranged at the lower part of the protection tube, and annular grooves are uniformly distributed on the inner side wall of the rubber sleeve; the sliding plate and the rubber sleeve are coaxially arranged, the sliding plate can move along the axial direction of the rubber sleeve, and when the sliding plate and the rubber sleeve are kept static, the edge of the sliding plate is embedded in the annular groove of the rubber sleeve; the stretching plate is sleeved on the second high-pressure water pipe, the stretching plate can move up and down relative to the second high-pressure water pipe, and the lower stroke of the stretching plate is controlled by a limiting piece arranged at the bottom end of the second high-pressure water pipe; the stretching plate is connected with the sliding plate through a connecting rod, an annular chute is arranged on the upper surface of the stretching plate, and balls are arranged in the annular chute; rectangular grooves are uniformly formed in the pull rod at equal intervals along the axial direction, the lower end of the pull rod is connected to the ball, the upper end of the pull rod is a free end, and the free end of the pull rod extends upwards through a reserved hole formed in the fixed plate; the fluted disc is arranged in a clamping groove positioned on the inner side wall of the protection tube; the meshing area of the gear and the fluted disc is connected in a meshing mode, one end of the gear is welded with the gear disc, a poking rod is welded on the gear disc, and the poking rod is meshed with the rectangular groove on the pull rod;
the slag discharging system comprises a slag discharging pipe, the bottom end of the slag discharging pipe is located above the stretching plate, the top end of the slag discharging pipe sequentially penetrates through the fluted disc, the fixing plate and the reserved hole in the top end cover to extend upwards, and meanwhile the slag discharging pipe is fixed to the top end cover.
The automatic hydraulic exploitation drilling tool is characterized in that: the gear fixing sleeve is sleeved on a gear shaft of the gear, and the upper end of the gear fixing sleeve is in threaded connection with the fixing plate.
Through the design scheme, the invention has the following beneficial effects: according to the automatic hydraulic exploitation drilling tool provided by the invention, the water gun stretching angle is free to adjust, the distance between the water gun nozzle and the mineral seam can be controlled according to the design, the problem that the high-pressure water energy is suddenly weakened due to submerged jet flow is avoided, the purpose of improving the energy utilization rate of the high-pressure water jet flow is achieved, and finally the exploitation efficiency is improved; meanwhile, the water gun extending parameters can be set as required, so that the water gun can automatically extend according to the design parameters in the hydraulic exploitation process, the drilling hydraulic exploitation process is simplified, and the labor intensity of operators is reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of an automatic hydraulic mining drilling tool of the present invention.
Fig. 2 is an assembly drawing of the automated hydraulic production drilling tool of the present invention.
Fig. 3 is a second view of an automated hydraulic mining drill assembly of the present invention.
Fig. 4 is an enlarged schematic view at B in fig. 3.
Fig. 5 is a third view of an automated hydraulic production drill assembly of the present invention.
Fig. 6 is an enlarged schematic view at C in fig. 5.
The figures are marked as follows: the device comprises a 1-top end cover, a 2-guide sleeve, a 3-slag discharging pipe, a 4-fixed plate, a 5-first high-pressure water pipe, a 6-high-pressure rotary joint, a 7-second high-pressure water pipe, an 8-stretching plate, a 9-connecting rod, a 10-right angle joint, a 11-water gun high-pressure rotary joint, a 12-water gun, a 13-ejector rod, a 14-sliding plate, a 15-rubber sleeve, a 16-ball, a 17-pull rod, a 18-fluted disc, a 19-gear, a 20-gear fixed sleeve, a 21-single-acting bearing, a 22-protecting pipe and a 23-bottom end cover.
Detailed Description
In order to more clearly illustrate the present invention, the present invention will be further described with reference to preferred embodiments and the accompanying drawings. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this invention is not limited to the details given herein. In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and that the features defining "first" and "second" are not necessarily indicative of any order, quantity, or importance, but are merely used to distinguish between different components.
As shown in fig. 1 to 6, the automatic hydraulic mining drilling tool according to the present invention is characterized by comprising: the hydraulic system comprises a top end cover 1, a single-acting bearing 21, a protection pipe 22, a bottom end cover 23, a high-pressure water conveying system, a water gun telescopic system and a slag discharging system;
the protection pipe 22 is a hollow cylinder with two open ends, an opening which is axially arranged is arranged on the side wall of the protection pipe 22, the top end of the protection pipe 22 is in threaded connection with the drill stem, and the drill stem drives the protection pipe 22 to rotate synchronously with the drill stem when rotating;
the top end cover 1 is arranged at the upper part of the protection tube 22;
the outer ring of the single-acting bearing 21 is fixed on the top end cover 1 through a bearing seat, and the inner ring of the single-acting bearing 21 is connected with the protection tube 22, so that the top end cover 1 is kept motionless when the protection tube 22 rotates;
the bottom end cover 23 is in threaded connection with the bottom end of the protection tube 22;
the high-pressure water conveying system comprises a first high-pressure water pipe 5, a high-pressure rotary joint 6, a second high-pressure water pipe 7, a right-angle joint 10, a water gun high-pressure rotary joint 11 and a water gun 12, wherein the top end of the first high-pressure water pipe 5 penetrates through the top end cover 1 to be in sealing connection with a ground surface high-pressure water source pipeline, meanwhile, the first high-pressure water pipe 5 is fixed on the top end cover 1, and the bottom end of the first high-pressure water pipe 5 is in sealing connection with a water inlet of the high-pressure rotary joint 6; the top end of the second high-pressure water pipe 7 is in sealing connection with the water outlet of the high-pressure rotary joint 6, and the bottom end of the second high-pressure water pipe 7 is in sealing connection with the water inlet of the right-angle joint 10; the water outlet of the right-angle joint 10 is in sealing connection with the water inlet of the water gun high-pressure rotary joint 11, and the water outlet of the water gun high-pressure rotary joint 11 is in sealing connection with the water gun 12; when the automatic hydraulic mining drilling tool works, surface high-pressure water flows into a water gun 12 through a first high-pressure water pipe 5, a high-pressure rotary joint 6, a second high-pressure water pipe 7, a right-angle joint 10 and a water gun high-pressure rotary joint 11 in sequence, and is sprayed out from a nozzle of the water gun 12 at a high speed, so that rock is crushed.
The water gun telescopic system is arranged in the protection pipe 22, and comprises a fixed plate 4, a stretching plate 8, a connecting rod 9, a push rod 13, a sliding plate 14, a rubber sleeve 15, a ball 16, a pull rod 17, a fluted disc 18 and a gear 19, wherein the fixed plate 4 is welded on the first high-pressure water pipe 5; the top end of the ejector rod 13 is pivoted with a clamping groove welded on the water gun 12 through a pin key, and the bottom end of the ejector rod 13 is pivoted with a clamping groove welded on the sliding plate 14 through a pin key; the rubber sleeve 15 is embedded into an annular clamping groove which is matched with the shape of the rubber sleeve and is arranged at the lower part of the protection tube 22, and annular grooves are uniformly distributed on the inner side wall of the rubber sleeve 15; the sliding plate 14 and the rubber sleeve 15 are coaxially arranged, the sliding plate 14 can move along the axial direction of the rubber sleeve 15, and when the sliding plate 14 and the rubber sleeve 15 are kept static, the edge of the sliding plate 14 is embedded in an annular groove of the rubber sleeve 15; the stretching plate 8 is sleeved on the second high-pressure water pipe 7, the stretching plate 8 can move up and down relative to the second high-pressure water pipe 7, and the lower stroke of the stretching plate 8 is controlled by a limiting piece arranged at the bottom end of the second high-pressure water pipe 7; the stretching plate 8 is connected with the sliding plate 14 through a connecting rod 9, an annular chute is arranged on the upper surface of the stretching plate 8, and a ball 16 is arranged in the annular chute; rectangular grooves are uniformly formed in the pull rod 17 at equal intervals along the axial direction, the lower end of the pull rod 17 is connected to the ball 16, the upper end of the pull rod 17 is a free end, and the free end of the pull rod 17 extends upwards through a reserved hole formed in the fixed plate 4; the fluted disc 18 is arranged in a clamping groove positioned on the inner side wall of the protection tube 22; the meshing area of the gear 19 and the fluted disc 18 is connected in a meshing mode, one end of the gear 19 is welded with a gear disc, a poke rod is welded on the gear disc, and the poke rod is meshed with a rectangular groove on the pull rod 17; when the automatic hydraulic mining drilling tool works, under the drive of a drill stem, the protection tube 22 rotates clockwise along with the drill stem, so that the fluted disc 18 is driven to rotate clockwise, when the fluted disc 18 rotates to a meshing area with the gear 19, the gear 19 rotates clockwise, the pulling rod 17 on the gear 19 is pulled to move upwards by a certain distance, the pulling rod 17 is driven by the pulling rod 17, the pulling plate 8 moves upwards by the same distance, so that the sliding plate 14 is driven to move upwards by the connecting rod 9, at the moment, the ejector rod 13 arranged on the sliding plate 14 supports the water gun 12 to extend outwards by a certain angle, when the fluted disc 18 rotates to the meshing area, the gear 19 keeps not rotating, the pulling rod 17 stops moving upwards, the sliding plate 14 keeps axially motionless under the action of the rubber sleeve 15, so that the extending angle of the water gun 12 is fixed, and when the fluted disc 18 rotates to the meshing area, the above-mentioned movement is repeated; in the rotation process of the drilling tool, the single-acting bearing 21 is connected between the protection pipe 22 and the top end cover 1, so that the top end cover 1, the first high-pressure water pipe 5 connected to the top end cover 1 and the slag discharging pipe 3 do not rotate along with the protection pipe 22 in the rotation process of the protection pipe 22, and the annular sliding groove is formed in the stretching plate 8, when the stretching plate 8 rotates along with the protection pipe 22, the rolling balls 16 connected to the pull rod 17 slide in the annular sliding groove, so that the pull rod 17 is guaranteed not to rotate along with the stretching plate 8.
The slag discharging system comprises a slag discharging pipe 3, the bottom end of the slag discharging pipe 3 is positioned above the stretching plate 8, the top end of the slag discharging pipe 3 sequentially penetrates through the fluted disc 18, the fixed plate 4 and the reserved holes in the top end cover 1 to extend upwards, and meanwhile, the slag discharging pipe 3 is fixed on the top end cover 1; during the hydraulic exploitation, broken rock scraps are carried by drilling fluid and are returned to the ground surface through the slag discharging pipe 3.
The specific working process of the invention comprises the following steps:
the water gun 12 extends and is fixed: after the drilling required by hydraulic exploitation is completed, the automatic hydraulic exploitation drilling tool is lowered to the bottom of the hole, the protection tube 22 is driven by a drill stem to rotate clockwise, so that the fluted disc 18 is driven to rotate clockwise, when the fluted disc 18 rotates to a meshing area with the gear 19, the gear 19 rotates clockwise, the stirring rod of the gear 19 stirs the pull rod 17 to move upwards for a certain distance, the pull rod 17 is driven by the pull rod 17 to move upwards by the same distance, so that the sliding plate 14 is driven by the connecting rod 9 to move upwards, at the moment, the ejector rod 13 arranged on the sliding plate 14 supports the water gun 12 to extend outwards for a certain angle, when the fluted disc 18 rotates to the meshing area, the gear 19 is kept unchanged, the pull rod 17 stops moving upwards, the sliding plate 14 is kept axially fixed under the action of the rubber sleeve 15, so that the extending angle of the water gun 12 is fixed, and when the fluted disc 18 rotates to the meshing area, the above-mentioned movement is repeated; the single-acting bearing 21 is connected between the protection pipe 22 and the top end cover 1, so that the top end cover 1, the first high-pressure water pipe 5 connected to the top end cover 1 and the slag discharging pipe 3 do not rotate along with the protection pipe 22 in the rotating process of the protection pipe 22, and the annular sliding groove is formed in the stretching plate 8, and when the stretching plate 8 rotates along with the protection pipe 22, the rolling ball 16 connected to the pull rod 17 slides in the annular sliding groove, so that the pull rod 17 is ensured not to rotate along with the stretching plate 8; the extending speed of the water gun 12 can be realized by adjusting the size of the meshing area between the gear 19 and the fluted disc 18 or the rotation speed of the drill string, and the upward moving distance of the sliding plate 14 can be calculated from the ground surface by the meshing relation between the gear 19 and the fluted disc 18 and the rotation speed of the drill string, so that the real-time extending state of the water gun 12 is obtained.
The water gun 12 rotates to jet crushed rock: the ground surface high-pressure water source flows into the water gun 12 through the first high-pressure water pipe 5, the high-pressure rotary joint 6, the second high-pressure water pipe 7, the right-angle joint 10 and the water gun high-pressure rotary joint 11, is sprayed out of a nozzle of the water gun 12 at a high speed, and simultaneously, the second high-pressure water pipe 7, the stretching plate 8, the connecting rod 9, the right-angle joint 10, the water gun high-pressure rotary joint 11, the water gun 12, the ejector rod 13, the sliding plate 14 and the rubber sleeve 15 rotate along with the protection pipe 22, so that the water gun 12 can rotationally spray crushed rock; the single-acting bearing 21 is connected between the protection pipe 22 and the top end cover 1, so that in the rotation process of the protection pipe 22, the top end cover 1, the first high-pressure water pipe 5 connected to the top end 1 and the slag discharging pipe 3 do not rotate along with the protection pipe 22, and the components such as the first high-pressure water pipe 5, the pull rod 17 and the like are guaranteed not to rotate along with the protection pipe 22 due to the actions of the high-pressure rotary joint 6 and the balls 16, so that the single-acting purpose is realized.
The water gun 12 is retracted: when the extraction is completed or when the drill is required to be lifted due to the abnormal condition in the hole, the extended water gun 12 is required to be retracted, at the moment, the drilling tool is stopped to rotate, the wellhead is closed, the discharge capacity of the slurry pump is regulated down, the slag discharging pipe 3 is lowered to be in contact with the stretching plate 8, at the moment, the liquid circulation channel is blocked, and the stretching plate 8 and the sliding plate 14 move downwards under the action of the pressure difference because the radiuses of the stretching plate 8 and the sliding plate 14 are smaller than the protective pipe 22, so that the pumping pressure is observed on the ground surface, and when the pumping pressure suddenly increases, the stretching plate 8 is indicated to be in contact with a limiting piece welded on the second high-pressure water pipe 7, namely, the water gun 12 reaches the retraction state.
In summary, the automatic hydraulic mining drilling tool provided by the invention has the following advantages:
1. the extension angle of the automatic hydraulic mining drilling tool is controlled by the gear 19, the fluted disc 18 and the rotating speed of the drilling tool in a matched manner, so that the automatic hydraulic mining drilling tool is convenient to adjust, and the problem that high-pressure water energy is suddenly weakened due to submerged jet flow is avoided; on the other hand, the area of single borehole hydraulic mining is increased, thereby improving the mining efficiency of the borehole hydraulic mining.
2. According to the automatic hydraulic exploitation drilling tool, the hydraulic pistols 12 are controlled to extend through the gears 19, the fluted discs 18 and the like, the hydraulic pistols 12 can extend without operating on the ground, hydraulic exploitation procedures can be simplified, and labor intensity of operators is reduced.
3. The automatic hydraulic exploitation drilling tool can be retracted at any time, and when the engineering is abnormal, the hydraulic gun can be retracted in time to lift the drilling tool, so that the reliability and the applicability of the automatic hydraulic exploitation drilling tool can be improved.
Claims (2)
1. An automatic hydraulic mining drill, comprising: the hydraulic system comprises a top end cover (1), a single-acting bearing (21), a protection pipe (22), a bottom end cover (23), a high-pressure water conveying system, a water gun telescopic system and a slag discharging system;
the protection pipe (22) is a hollow cylinder with two open ends, an opening which is axially arranged is arranged on the side wall of the protection pipe (22), and the top end of the protection pipe (22) is in threaded connection with the drill string;
the top end cover (1) is arranged at the upper part of the protection tube (22);
the outer ring of the single-acting bearing (21) is fixed on the top end cover (1) through a bearing seat, and the inner ring of the single-acting bearing (21) is connected with the protection tube (22);
the bottom end cover (23) is in threaded connection with the bottom end of the protection tube (22);
the high-pressure water conveying system comprises a first high-pressure water pipe (5), a high-pressure rotary joint (6), a second high-pressure water pipe (7), a right-angle joint (10), a water gun high-pressure rotary joint (11) and a water gun (12), wherein the top end of the first high-pressure water pipe (5) penetrates through the top end cover (1) to be in sealing connection with a ground surface high-pressure water source pipeline, meanwhile, the first high-pressure water pipe (5) is fixed on the top end cover (1), and the bottom end of the first high-pressure water pipe (5) is in sealing connection with a water inlet of the high-pressure rotary joint (6); the top end of the second high-pressure water pipe (7) is in sealing connection with the water outlet of the high-pressure rotary joint (6), and the bottom end of the second high-pressure water pipe (7) is in sealing connection with the water inlet of the right-angle joint (10); the water outlet of the right-angle joint (10) is in sealing connection with the water inlet of the water gun high-pressure rotary joint (11), and the water outlet of the water gun high-pressure rotary joint (11) is in sealing connection with the water gun (12);
the water gun telescopic system is arranged in the protection pipe (22), and comprises a fixed plate (4), a stretching plate (8), a connecting rod (9), a push rod (13), a sliding plate (14), a rubber sleeve (15), balls (16), a pull rod (17), a fluted disc (18) and a gear (19), wherein the fixed plate (4) is welded on the first high-pressure water pipe (5); the top end of the ejector rod (13) is pivoted with a clamping groove welded on the water gun (12) through a pin key, and the bottom end of the ejector rod (13) is pivoted with a clamping groove welded on the sliding plate (14) through a pin key; the rubber sleeve (15) is embedded into an annular clamping groove which is matched with the shape of the rubber sleeve and is arranged at the lower part of the protection tube (22), and annular grooves are uniformly distributed on the inner side wall of the rubber sleeve (15); the sliding plate (14) and the rubber sleeve (15) are coaxially arranged, the sliding plate (14) can move along the axial direction of the rubber sleeve (15), and when the sliding plate (14) and the rubber sleeve (15) are kept static, the edge of the sliding plate (14) is embedded in an annular groove of the rubber sleeve (15); the stretching plate (8) is sleeved on the second high-pressure water pipe (7), the stretching plate (8) can move up and down relative to the second high-pressure water pipe (7), and the downward stroke of the stretching plate (8) is controlled by a limiting piece arranged at the bottom end of the second high-pressure water pipe (7); the stretching plate (8) is connected with the sliding plate (14) through a connecting rod (9), an annular chute is arranged on the upper surface of the stretching plate (8), and a ball (16) is arranged in the annular chute; rectangular grooves are uniformly formed in the pull rod (17) at equal intervals along the axial direction, the lower end of the pull rod (17) is connected to the ball (16), the upper end of the pull rod (17) is a free end, and the free end of the pull rod (17) extends upwards through a reserved hole formed in the fixed plate (4); the fluted disc (18) is arranged in a clamping groove positioned on the inner side wall of the protection tube (22); the meshing area of the gear (19) and the fluted disc (18) is connected in a meshing mode, one end of the gear (19) is welded with a gear disc, a poking rod is welded on the gear disc, and the poking rod is meshed with a rectangular groove on the pull rod (17);
the slag discharging system comprises a slag discharging pipe (3), the bottom end of the slag discharging pipe (3) is located above the stretching plate (8), the top end of the slag discharging pipe (3) sequentially penetrates through the fluted disc (18), the fixing plate (4) and the reserved hole in the top end cover (1) to extend upwards, and meanwhile the slag discharging pipe (3) is fixed on the top end cover (1);
the water gun (12) stretches out and is fixed: after the drilling required by hydraulic exploitation is completed, the automatic hydraulic exploitation drilling tool is lowered to the bottom of the hole, the protective tube (22) is driven by the drill stem to rotate clockwise, so that the fluted disc (18) is driven to rotate clockwise, when the fluted disc (18) rotates to a meshing area with the gear (19), the gear (19) rotates clockwise, the pulling rod of the gear (19) pulls the pulling rod (17) to move upwards, the pulling rod (17) is driven by the pulling rod (17) to move upwards, the pulling rod (8) moves upwards by the same distance, so that the sliding plate (14) is driven by the connecting rod (9) to move upwards, at the moment, the ejector rod (13) arranged on the sliding plate (14) supports the water gun (12) to extend outwards, when the fluted disc (18) rotates through the meshing area, the gear (19) is kept unchanged, the pulling rod (17) stops moving upwards, and the sliding plate (14) is kept axially unchanged under the action of the rubber sleeve (15), so that the extending angle of the water gun (12) is fixed; because the stretching plate (8) is provided with the annular chute, when the stretching plate (8) rotates along with the protection pipe (22), the ball (16) connected to the pull rod (17) slides in the annular chute, and the pull rod (17) does not rotate along with the stretching plate (8); the extending speed of the water gun (12) can be realized by adjusting the size of the meshing area of the gear (19) and the fluted disc (18) or the rotation speed of the drill stem, and the upward moving distance of the sliding plate (14) is obtained by the meshing relation of the gear (19) and the fluted disc (18) and the rotation speed of the drill stem, so that the real-time extending state of the water gun (12) is obtained;
the water gun (12) sprays crushed rock in a rotating way: the ground surface high-pressure water source flows into the water gun (12) through the first high-pressure water pipe (5), the high-pressure rotary joint (6), the second high-pressure water pipe (7), the right-angle joint (10) and the water gun high-pressure rotary joint (11), is sprayed out from a nozzle of the water gun (12), and simultaneously, the second high-pressure water pipe (7), the stretching plate (8), the connecting rod (9), the right-angle joint (10), the water gun high-pressure rotary joint (11), the water gun (12), the ejector rod (13), the sliding plate (14) and the rubber sleeve (15) rotate along with the protection pipe (22), so that the water gun (12) can rotationally spray crushed rock;
the water gun (12) is retracted: when the mining is finished or drilling is needed due to the abnormal condition in the hole, the extending water gun (12) is retracted, at the moment, the drilling tool is stopped to rotate, the wellhead is closed, the discharge capacity of the slurry pump is regulated down, the slag discharging pipe (3) is lowered to be in contact with the stretching plate (8), at the moment, the liquid circulation channel is blocked, the stretching plate (8) and the sliding plate (14) move downwards under the action of pressure difference due to the fact that the radiuses of the stretching plate (8) and the sliding plate (14) are smaller than the radius of the protecting pipe (22), when the pumping pressure is suddenly increased, the fact that the stretching plate (8) is in contact with a limiting piece welded on the second high-pressure water pipe (7) is indicated, and the water gun (12) is in a retracted state is achieved.
2. The automated hydraulic production drilling tool of claim 1, wherein: the gear fixing device further comprises a gear fixing sleeve (20), the lower end of the gear fixing sleeve (20) is sleeved on a gear shaft of the gear (19), and the upper end of the gear fixing sleeve (20) is in threaded connection with the fixing plate (4).
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| CN201910072767.8A CN109538211B (en) | 2019-01-25 | 2019-01-25 | Automatic hydraulic exploitation drilling tool |
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| CN201910072767.8A CN109538211B (en) | 2019-01-25 | 2019-01-25 | Automatic hydraulic exploitation drilling tool |
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