CN211201821U - Percussion rotary drilling core drill for complex bedrock under ice - Google Patents
Percussion rotary drilling core drill for complex bedrock under ice Download PDFInfo
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- CN211201821U CN211201821U CN201922443674.XU CN201922443674U CN211201821U CN 211201821 U CN211201821 U CN 211201821U CN 201922443674 U CN201922443674 U CN 201922443674U CN 211201821 U CN211201821 U CN 211201821U
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Abstract
The drilling tool comprises an ultrahigh-pressure gas storage tank, a pressure reducing valve, a pneumatic down-the-hole hammer and a single-action double-tube drilling tool, wherein the pneumatic down-the-hole hammer is positioned between a drill rod and the single-action double-tube drilling tool, the drill rod, the pneumatic down-the-hole hammer and the single-action double-tube drilling tool are sequentially and coaxially connected from top to bottom, and the ultrahigh-pressure gas storage tank is arranged inside the drill rod and is connected to the pressure reducing valve positioned at the lower part of the drill rod through a vent pipeline; the utility model provides a coring drilling tool replaces the air compressor machine with the superhigh pressure gas holder and places in the drilling tool, and gas passes through the relief pressure valve in the superhigh pressure gas holder to pneumatic down-the-hole hammer air feed, and drive piston reciprocating motion strikes double-barrelled coring drilling tool of single action to combine electronic rotation mechanism, realize striking gyration coring and creep into, broken under-ice bed rock and accomplish coring, adopt the utility model discloses a pneumatic down-the-hole hammer that coring drilling tool implemented creeps into technology, can effectively solve complex bed rock such as hard, crisp, garrulous, hourglass under the ice and creep into the difficult problem of coring.
Description
Technical Field
The utility model belongs to geological drilling equipment field, concretely relates to complicated basement rock under ice strikes rotary drilling and coring drilling tool.
Background
The core of the under-ice bedrock in Antarctic continent has great significance and social value in the research of the related fields of geological structure and cause of Antarctic continent, the research of formation and movement of glaciers and even the research of global climate change, and is one of the main targets of modern polar research. The achievement of the polar geological drilling plan is remarkable, the ice cover drilling technology is mature day by day, but the relatively mature process of drilling the core of the ice-below-ice bedrock still does not exist until now. When drilling to an ice rock interface, because the strength of the bedrock is higher than that of an ice layer, if an iced bedrock core is drilled by a conventional in-hole rotary drilling process, the drilling pressure needs to be improved on the basis of ice core drilling, the maximum drilling pressure is the dead weight of a drilling tool generally in consideration of the bearing capacity of an armored cable, and the drilling pressure is too high, so that higher requirements are provided for a counter-torque system, and drilling parameters required by diamond rotary drilling are difficult to meet.
SUMMERY OF THE UTILITY MODEL
To current downthehole diamond rotary drilling technique when boring to the basement rock under ice, because of receiving factor restrictions such as drilling pressure scope that antitorque twist system bearing capacity and drilling tool dead weight can apply, unable effective broken basement rock of continuation acquires the problem of rock core, the utility model aims at providing an iced complicated basement rock impact rotary drilling coring drilling tool adopts superhigh pressure gas holder to replace the air compressor machine, and the air in the superhigh pressure gas holder passes through the relief pressure valve inside the drilling tool, carries out the air feed to the super short type pneumatic down-the-hole hammer of low consumption amount of wind, drives the piston reciprocating motion of pneumatic down-the-hole hammer, strikes double-barrelled coring drilling tool of single action to combine electric rotary mechanism, realize strikeing gyration coring and creep into, in order to acquire the basement rock under ice.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: the complicated bedrock under ice strikes rotary drilling coring tool, its characterized in that includes: the pneumatic down-the-hole hammer is positioned between a drill rod and the single-action double-tube coring drilling tool, the drill rod, the pneumatic down-the-hole hammer and the single-action double-tube coring drilling tool are sequentially and coaxially connected from top to bottom, and the ultrahigh-pressure gas storage tank is arranged in the drill rod and is connected to the pressure reducing valve positioned at the lower part of the drill rod through a vent pipeline; the pneumatic down-the-hole hammer comprises a down-the-hole hammer outer cylinder, a check valve, an air distribution seat, a down-the-hole hammer inner cylinder and a piston, wherein the upper end of the down-the-hole hammer outer cylinder is in threaded connection with a drill rod, the lower end of the down-the-hole hammer outer cylinder is in splined connection with a single-action double-tube coring drilling tool outer tube through a spline sleeve, the check valve, the air distribution seat and the down-the-hole hammer inner cylinder are arranged inside the down-the-hole hammer outer cylinder, the check valve is installed on the air distribution seat, the check valve is communicated with a pressure reducing valve through an air channel, the air distribution seat is installed at the upper end of the down-the-; the lower part of the side wall of the inner cylinder of the down-the-hole hammer is provided with a radial air inlet, and the inner wall of the inner cylinder of the down-the-hole hammer is provided with an inner ring groove; the piston is arranged in the inner cylinder of the down-the-hole hammer; the single-action double-tube coring drilling tool comprises an impact joint, a bearing, a mandrel, a core tube joint, steel balls, an outer tube of the single-action double-tube coring drilling tool, a core tube and a drill bit, wherein the upper part of the impact joint is in threaded connection with an outer cylinder of the down-the-hole hammer, and the lower end of the impact joint is in threaded connection with the outer tube of the single-action double-tube coring drilling tool; the outer pipe of the single-acting double-pipe coring drilling tool is in threaded connection with a drill bit positioned below the outer pipe, the outer pipe of the single-acting double-pipe coring drilling tool and the drill bit are coaxially arranged, and a bearing is sleeved on the mandrel and is in clearance fit with the inside of the impact joint; the mandrel is in threaded connection with the core tube joint, and an air channel is arranged inside the core tube joint; the steel ball is arranged in an air channel of the core tube joint; the core tube is arranged inside the outer tube of the single-action double-tube core drilling tool and is coaxially arranged with the outer tube of the single-action double-tube core drilling tool, and the core tube is in threaded connection with the core tube joint.
Furthermore, the drill bit is provided with columnar hard alloy teeth.
Further, the diameter of the drill bit is 135 mm.
Further, the diameter of the pneumatic down-the-hole hammer is 89 mm.
Further, the internal diameter of the ultrahigh pressure gas storage tank is 80 mm.
Through the above design scheme, the utility model discloses following beneficial effect can be brought: the utility model provides an iced complex bedrock percussion rotary drilling coring drilling tool, which supplies air through an ultrahigh pressure air storage tank arranged inside a drill rod to drive a pneumatic down-the-hole hammer to work, and does not need large-scale air compressor equipment in the drilling process; the drilling tool is compatible and complementary with the existing diamond bit rotary type under-ice bedrock drilling system, and does not need to be connected with a drill rod or a hose; the pneumatic down-the-hole hammer has low requirement on the drilling pressure range, can meet the drilling requirement by means of the self weight of a drilling tool, and does not need to improve the existing reaction torque system. Adopt the utility model provides a pneumatic down-the-hole hammer that coring drilling tool implemented creeps into technology, can effectively solve complicated basement rock drilling coring difficult problems such as the icy hard, fragile, garrulous, hourglass.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this application, and the exemplary embodiments and descriptions thereof are used to understand the invention without constituting undue limitations of the invention, in which:
fig. 1 is a schematic structural view of an under-ice complex bedrock percussion rotary drilling core drill according to an embodiment of the present invention.
The respective symbols in the figure are as follows: 1-ultrahigh pressure gas storage tank, 2-pressure reducing valve, 3-down-the-hole hammer outer cylinder, 4-check valve, 5-gas distribution seat, 6-down-the-hole hammer inner cylinder, 7-piston, 8-impact joint, 9-bearing, 10-mandrel, 11-core pipe joint, 12-steel ball, 13-single-action double-pipe coring drilling tool outer pipe, 14-core pipe and 15-drill bit.
Detailed Description
In order to explain the present invention more clearly, the present invention will be further described with reference to the preferred embodiments and the accompanying drawings. As will be appreciated by those skilled in the art. The following detailed description is intended to be illustrative rather than limiting, and is not intended to limit the scope of the invention.
As shown in fig. 1, the complex bedrock percussion rotary drilling core drill tool under ice comprises an ultrahigh pressure gas storage tank 1, a pressure reducing valve 2, a pneumatic down-the-hole hammer and a single-action double-tube core drill tool, wherein the pneumatic down-the-hole hammer is positioned between a drill rod and the single-action double-tube core drill tool, the drill rod, the pneumatic down-the-hole hammer and the single-action double-tube core drill tool are sequentially and coaxially connected from top to bottom, and the ultrahigh pressure gas storage tank 1 is arranged in the drill rod and is connected to the pressure reducing valve 2 positioned at the lower part of; the pneumatic down-the-hole hammer comprises a down-the-hole hammer outer cylinder 3, a check valve 4, an air distribution seat 5, a down-the-hole hammer inner cylinder 6 and a piston 7, wherein the down-the-hole hammer outer cylinder 3 is positioned below a drill rod and is in threaded connection with the drill rod, the lower end of the down-the-hole hammer outer cylinder 3 is in splined connection with a single-acting double-tube coring drilling tool outer tube 13 through a spline sleeve, the check valve 4, the air distribution seat 5 and the down-the-hole hammer inner cylinder 6 are arranged inside the down-the-hole hammer outer cylinder 3, the check valve 4 is installed on the air distribution seat 5, the check valve 4 is communicated with a pressure reducing valve 2 through an air channel, the air distribution seat 5 is installed at the upper end of the down-the; the lower part of the side wall of the inner cylinder 6 of the down-the-hole hammer is provided with a radial air inlet, and the inner wall of the inner cylinder 6 of the down-the-hole hammer is provided with an inner ring groove; the piston 7 is arranged in the down-the-hole hammer inner cylinder 6; the single-action double-tube coring drilling tool comprises an impact joint 8, a bearing 9, a mandrel 10, a core tube joint 11, a steel ball 12, a single-action double-tube coring drilling tool outer tube 13, a core tube 14 and a drill bit 15, wherein the upper part of the impact joint 8 is in threaded connection with a down-the-hole hammer outer cylinder 3, and the lower end of the impact joint 8 is in threaded connection with the single-action double-tube coring drilling tool outer tube 13; the outer pipe 13 of the single-action double-pipe core drill is in threaded connection with the drill bit 15, so that the impact joint 8 bears the impact generated by the pneumatic down-the-hole hammer and the torque generated by the electric slewing mechanism, and transmits the impact to the outer pipe 13 of the single-action double-pipe core drill and further transmits the impact to the drill bit 15, and the core drilling of broken rocks is realized; the bearing 9 is sleeved on the mandrel 10 and is in clearance fit with the inside of the impact joint 8, the single-action function of the core tube 14 and the outer tube 13 of the single-action double-tube core drilling tool is realized through the bearing 9, the mandrel 10 is in threaded connection with the core tube joint 11, and an air channel is arranged inside the core tube joint 11; the steel ball 12 is arranged in an air channel of the core tube joint 11; the core tube 14 is arranged inside the outer tube 13 of the single-action double-tube core drilling tool and is coaxially arranged with the outer tube 13 of the single-action double-tube core drilling tool, and the core tube 14 is in threaded connection with the core tube joint 11; the drill bit 15 is provided with columnar cemented carbide teeth.
The working process and the principle of the underwater complex bedrock percussion rotary drilling core drill are as follows:
the utility model discloses consider that the polar region probing is when boring to the rock bed under the polar region ice, the detritus efficiency reduces, proposes to replace the air compressor machine with superhigh pressure gas holder 1 and carry out the air feed to pneumatic down-the-hole hammer downthehole, drives pneumatic down-the-hole hammer work to the combination has had suspension mechanism and electronic rotation mechanism, implements to strike gyration coring drilling technique, and then broken polar region rock bed under the ice and acquire the rock bed rock core.
The ultra-high pressure gas storage tank 1 is filled with compressed gas through the pressurization mechanism by utilizing the miniature portable air compressor on the ground surface, and when the ultra-high pressure gas storage tank 1 is inflated outside a hole, the miniature portable air compressor and the pressurization mechanism are adopted, so that the matching equipment is small in size, light in weight and low in power. For a single-action double-tube core drill with the diameter of the drill bit 15 being 135mm, a pneumatic down-the-hole hammer with the diameter of 89mm is matched, and 3.5m can be realized through parameter optimization3The air volume is low for/min; the core drilling of the pneumatic down-the-hole hammer is carried out, the mechanical drilling speed is measured according to 6m/h, the time for drilling 1m is 10min, and the total wind consumption volume is 35m3(1 atmosphere); at present, the pressure of the domestic ultrahigh pressure container can be over 1000 MPa. 35m under 1 atmospheric pressure condition3The air is stored in the ultra-high pressure air storage tank 1 with the hole diameter of 1000MPa, the volume is only 3.5L, the inner diameter of the ultra-high pressure air storage tank 1 is 80mm, and the height of the ultra-high pressure air storage tank 1 is less than 0.4 m.
During normal drilling, compressed gas reaches the pressure reducing valve 2 from the ultrahigh pressure gas storage tank 1 through a ventilation pipeline, the compressed gas passing through the pressure reducing valve 2 enters the pneumatic down-the-hole hammer, the check valve 4 is pushed open to enter an upper end air chamber where the check valve 4 is located, axial gas channels on two sides of the gas distribution seat 5 pass through radial air inlets on the down-the-hole hammer inner cylinder 6 and enter a front air chamber formed by an annular space between the periphery of the lower half part of the piston 7 and the inner wall of the down-the-hole hammer inner cylinder 6, at the moment, a rear air chamber formed by the upper end surface of the piston 7 and the down-the-hole hammer inner cylinder 6 is in an exhaust state. As shown in figure 1, because the piston 7 has a middle-end ring surface structure with the diameter slightly larger than the diameters of the upper end and the lower end, until the middle-end ring surface of the piston 7 enters the outer cylinder 3 of the down-the-hole hammer, the piston 7 closes the air inlet channel when the lower end of the piston is moved to the radial air inlet holes on the two sides of the lower part, so that compressed air is isolated from the air channels of the front air chamber and the rear air chamber, and the piston 7 continues to move in a return stroke under the push of the existing inertia and the expansion work. At this time, the exhaust of the rear air chamber is completed and the rear air chamber is in a compressed state. The piston 7 continues to return after performing deceleration movement, an inner ring groove is formed in the inner wall of the inner cylinder 6 of the down-the-hole hammer, and when the upper ring surface of the piston 7 crosses a lower ridge line of the inner ring groove of the inner cylinder 6 of the down-the-hole hammer, compressed gas starts to enter a rear air chamber, so that the piston 7 continues to decelerate, finally stops and starts to change direction to enter a stroke stage. At the moment, radial exhaust holes at two sides of the lower end of the front air chamber are opened, the upper end of the piston 7 moves downwards under the action of compressed air continuously entering the rear air chamber, the resistance is minimum, and the acceleration is maximum. When the upper ring surface of the piston 7 is lowered to the position below the lower ridge line of the inner ring groove of the inner cylinder 6 of the down-the-hole hammer, compressed gas stops entering, the piston 7 continues to downwards shoot by means of inertia and the expansion of the gas in the rear gas chamber, the front gas chamber gradually changes to a compressed state from an exhaust state, and a part of the downwards thrust force of the piston 7 is counteracted. Then, the air inlet channel of the front air chamber is opened, compressed air begins to enter, the rear air chamber is also converted into an exhaust state from an expansion state, the piston 7 is further decelerated until the impact joint 8 is impacted, and the impact joint 8 transmits force to the drill bit 15 with the columnar cemented carbide teeth. Meanwhile, an armored cable suspension system and a back-twist rotation system which are applied to the field of polar region drilling in the prior art are connected on the whole set of drilling tool shown in the figure 1, the drilling tool is driven to rotate by an electric rotation mechanism, and the outer tube 13 of the single-action double-tube core drilling tool is rotated while the core tube 14 is not rotated through the bearing 9, so that on one hand, a core in the core tube 14 is protected, the core sampling rate is improved, on the other hand, the combination of impact and rotation is completed, the bedrock is effectively crushed, and the core is obtained.
The air after driving the pneumatic down-the-hole hammer to work can reach the bottom of the hole through the exhaust channels arranged on the two sides of the mandrel 10 for cleaning and cooling when the air reaches the single-action double-tube core drill from the pneumatic down-the-hole hammer. When drilling, after the core tube 14 enters the core, the steel ball 12 is located in a one-way channel of air, the air in the core tube 14 pushes the steel ball 12 located at the air channel of the core tube joint 11 away, and the air enters an annular space between the core tube 14 and the outer tube 13 of the single-action double-tube core drilling tool along the air channel arranged in the core tube joint 11 to reach the bottom of the hole.
Claims (5)
1. The complicated bedrock under ice strikes rotary drilling coring tool, its characterized in that includes: the device comprises an ultrahigh-pressure gas storage tank (1), a pressure reducing valve (2), a pneumatic down-the-hole hammer and a single-action double-tube coring drilling tool, wherein the pneumatic down-the-hole hammer is positioned between a drill rod and the single-action double-tube coring drilling tool, the drill rod, the pneumatic down-the-hole hammer and the single-action double-tube coring drilling tool are sequentially and coaxially connected from top to bottom, and the ultrahigh-pressure gas storage tank (1) is arranged in the drill rod and is connected to the pressure reducing valve (2) positioned; the pneumatic down-the-hole hammer comprises a down-the-hole hammer outer cylinder (3), a check valve (4), a gas distribution seat (5), a down-the-hole hammer inner cylinder (6) and a piston (7), wherein the upper end of the down-the-hole hammer outer cylinder (3) is in threaded connection with a drill rod, the lower end of the down-the-hole hammer outer cylinder (3) is in splined connection with a single-acting double-pipe coring drill outer pipe (13) through a spline sleeve, the check valve (4), the gas distribution seat (5) and the down-the-hole hammer inner cylinder (6) are arranged inside the down-the-hole hammer outer cylinder (3), the check valve (4) is installed on the gas distribution seat (5), the check valve (4) is communicated with the pressure reducing valve (2) through an air channel, the gas distribution seat (5) is installed at the upper end of the down-the; the lower part of the side wall of the inner cylinder (6) of the down-the-hole hammer is provided with a radial air inlet, and the inner wall of the inner cylinder (6) of the down-the-hole hammer is provided with an inner annular groove; the piston (7) is arranged inside the down-the-hole hammer inner cylinder (6); the single-action double-tube coring drilling tool comprises an impact joint (8), a bearing (9), a mandrel (10), a core tube joint (11), a steel ball (12), a single-action double-tube coring drilling tool outer tube (13), a core tube (14) and a drill bit (15), wherein the upper part of the impact joint (8) is in threaded connection with the down-the-hole hammer outer cylinder (3), and the lower end of the impact joint (8) is in threaded connection with the single-action double-tube coring drilling tool outer tube (13); the outer pipe (13) of the single-acting double-pipe core drilling tool is in threaded connection with a drill bit (15) positioned below the outer pipe, the outer pipe (13) of the single-acting double-pipe core drilling tool and the drill bit (15) are coaxially arranged, and a bearing (9) is sleeved on a mandrel (10) and is in clearance fit with the inside of an impact joint (8); the mandrel (10) is in threaded connection with the core tube joint (11), and an air channel is arranged inside the core tube joint (11); the steel ball (12) is arranged in an air channel of the core tube joint (11); the core tube (14) is arranged inside the outer tube (13) of the single-action double-tube core drilling tool and is coaxially arranged with the outer tube (13) of the single-action double-tube core drilling tool, and the core tube (14) is in threaded connection with the core tube joint (11).
2. The under-ice complex bedrock percussion rotary drill bit according to claim 1, wherein: the drill bit (15) is provided with columnar hard alloy teeth.
3. The under-ice complex bedrock percussion rotary drill bit according to claim 1, wherein: the diameter of the drill bit (15) is 135 mm.
4. The under-ice complex bedrock percussion rotary drill bit according to claim 1, wherein: the diameter of the pneumatic down-the-hole hammer is 89 mm.
5. The under-ice complex bedrock percussion rotary drill bit according to claim 1, wherein: the inner diameter of the ultrahigh-pressure gas storage tank (1) is 80 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922443674.XU CN211201821U (en) | 2019-12-30 | 2019-12-30 | Percussion rotary drilling core drill for complex bedrock under ice |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922443674.XU CN211201821U (en) | 2019-12-30 | 2019-12-30 | Percussion rotary drilling core drill for complex bedrock under ice |
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| CN211201821U true CN211201821U (en) | 2020-08-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377091A (en) * | 2020-11-11 | 2021-02-19 | 重庆科技学院 | Bundling type transfer submerged drilling tool |
| CN113669002A (en) * | 2021-08-03 | 2021-11-19 | 深圳宏业基岩土科技股份有限公司 | Hard rock stratum combined hole forming construction method for large-diameter cast-in-place pile |
| CN114109288A (en) * | 2021-12-02 | 2022-03-01 | 吉林大学 | Pneumatic drive rapid coring drilling tool for polar ice layer |
-
2019
- 2019-12-30 CN CN201922443674.XU patent/CN211201821U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377091A (en) * | 2020-11-11 | 2021-02-19 | 重庆科技学院 | Bundling type transfer submerged drilling tool |
| CN112377091B (en) * | 2020-11-11 | 2022-09-13 | 重庆科技学院 | Bundling type transfer submerged drilling tool |
| CN113669002A (en) * | 2021-08-03 | 2021-11-19 | 深圳宏业基岩土科技股份有限公司 | Hard rock stratum combined hole forming construction method for large-diameter cast-in-place pile |
| CN113669002B (en) * | 2021-08-03 | 2023-12-08 | 深圳宏业基岩土科技股份有限公司 | Combined pore-forming construction method for hard rock stratum of large-diameter cast-in-place pile |
| CN114109288A (en) * | 2021-12-02 | 2022-03-01 | 吉林大学 | Pneumatic drive rapid coring drilling tool for polar ice layer |
| CN114109288B (en) * | 2021-12-02 | 2023-08-22 | 吉林大学 | Pneumatic driving quick coring drilling tool for polar region ice layer |
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