CN116950591A - High-tightness core pressure maintaining sampler and use method - Google Patents
High-tightness core pressure maintaining sampler and use method Download PDFInfo
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- CN116950591A CN116950591A CN202311019866.2A CN202311019866A CN116950591A CN 116950591 A CN116950591 A CN 116950591A CN 202311019866 A CN202311019866 A CN 202311019866A CN 116950591 A CN116950591 A CN 116950591A
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- rock core
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000011435 rock Substances 0.000 claims abstract description 75
- 238000005070 sampling Methods 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims description 49
- 238000007789 sealing Methods 0.000 claims description 49
- 238000005553 drilling Methods 0.000 claims description 44
- 230000005540 biological transmission Effects 0.000 claims description 30
- 230000007246 mechanism Effects 0.000 claims description 28
- 230000002457 bidirectional effect Effects 0.000 claims description 23
- 238000003466 welding Methods 0.000 claims description 6
- 230000000670 limiting effect Effects 0.000 description 18
- 238000002474 experimental method Methods 0.000 description 6
- 230000002829 reductive effect Effects 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
-
- 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/08—Coating, freezing, consolidating cores; Recovering uncontaminated cores or cores at formation pressure
-
- 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/10—Formed core retaining or severing means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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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)
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a high-tightness rock core pressure maintaining sampler and a use method, which are applied to the technical field of rock core sampling equipment.
Description
Technical Field
The invention belongs to the technical field of core sampling equipment, and particularly relates to a high-tightness core pressure maintaining sampler and a use method thereof.
Background
In the early-stage exploration of shale gas, many scientific research works are not separated from core flow experiments. The test object of the core flow test is a core, and the core is a cylindrical rock sample taken by using a core annular drill bit and other coring tools, and is an important physical material for researching geology and mineral conditions.
Currently, the publication number is: the invention of CN105569594A discloses a shale gas and rock core pressure maintaining sealing sampler, which consists of a salvaging mechanism, a spring clip positioning mechanism, a hanging single-acting mechanism, an in-place reporting mechanism, an upper end sealing mechanism, a core blocking mechanism and a lower end sealing mechanism, wherein the salvaging mechanism, the spring clip positioning mechanism, the hanging single-acting mechanism, the in-place reporting mechanism, the upper end sealing mechanism, the core blocking mechanism and the lower end sealing mechanism are sequentially arranged together; during the process from the process of putting into a well before drilling to the process of taking out a rock core, the following processes are sequentially carried out: in place, reporting, upper end sealing, core blocking, lower end sealing and salvaging. The invention has low cost, has the sealing function, is convenient to operate and high in success rate, can discharge the gas originally existing in the core barrel, reduces the interference on shale gas components, adopts a rope coring mode, has a channel for drilling fluid to flow in the core barrel in the putting process of the sampler, can give an alarm after being in place, and can accelerate the putting process.
The existing core sampling equipment is mainly divided into two major types, namely a large-scale drilling machine, a core sample with the depth of several kilometers underground can be drilled, but the large-scale drilling machine is higher in drilling cost and extremely poor in flexibility, and is generally only suitable for mines and oil fields, the large-scale drilling machine is obviously insufficient for geological scientific experiments with strong liquidity, the small-scale equipment for sampling the core by a manual drilling mode is convenient to carry, only a rock plate core with softer ground surface can be sampled by a manual drilling mode, meanwhile, the existing core container is poor in sealing performance, and when the core sample is taken out of the ground, the core is easy to break due to different pressures of the ground surface and the ground surface, so that research on the core by a researcher is very influenced.
Disclosure of Invention
The invention aims to provide a high-tightness core pressure maintaining sampler and a use method thereof, and the high-tightness core pressure maintaining sampler has the advantages that the maximum drilling depth of the sampler can be extended according to the depth of a core hole, the portability of the sampler is improved, and meanwhile, a deeper core can be drilled, and the tightness and the internal pressure of the sampler when the core is taken out can be maintained.
The technical aim of the invention is realized by the following technical scheme: the utility model provides a high leakproofness rock core pressurize sampler, includes first screw thread drill pipe, the top of first screw thread drill pipe is provided with the second screw thread drill pipe, the top of second screw thread drill pipe is provided with the third screw thread drill pipe, the bottom of second screw thread drill pipe and third screw thread drill pipe all welds the screw thread connector with first screw thread drill pipe and second screw thread drill pipe threaded connection respectively, the surface of first screw thread drill pipe and second screw thread drill pipe is provided with drive mechanism, the inside of first screw thread drill pipe is provided with sampling mechanism.
By adopting the technical scheme, the threaded connectors at the bottoms of the second threaded drill pipe and the third threaded drill pipe are aligned with the tops of the first threaded drill pipe and the second threaded drill pipe respectively and rotate, so that the first threaded drill pipe, the second threaded drill pipe and the third threaded drill pipe can be integrated, and a new threaded drill pipe is continuously connected to the top of the third threaded drill pipe, so that the maximum length of the first threaded drill pipe is set, the purpose of extending the maximum drilling depth of the sampler according to the depth of a rock core hole is achieved, rock core samples with different depths can be extracted, and the threaded drill pipe can be detached and is convenient to carry. The bidirectional driving motor is started to drive the gear meshing plate to rotate, so that the gear meshing plate is meshed with the transmission gear, and then the threaded driving ring can rotate in the first protective shell, so that the first threaded drilling pipe, the second threaded drilling pipe and the third threaded drilling pipe are driven to downwards rotate along a core hole which is formed in advance by the drilling machine to drill the core, the effect that the sampler is portable is achieved, meanwhile, a deeper core can be drilled is achieved, the flexibility of the sampler is improved, and the sampler can be used in geological scientific investigation experiments, mines, oil fields and other working environments with strong liquidity. The drill is performed on the rock core through the first threaded drill pipe, the sealing baffle is lifted at the top of the rock core, the sealing baffle is made to be attached to the inside of the baffle groove after being opened, and the torsion spring is driven to twist through the second rotating rod, so that the rock core is drilled into the inside of the rock core container, then the rock core is clamped off through the rock core clamp plate, the second rotating rod is driven by the return force generated after the torsion spring is twisted to control the sealing baffle to reset, the bottom of the rock core container is sealed, the functions of maintaining the sealing performance and the internal pressure when the rock core is taken out by the sampler are achieved, and the risk of cracking due to different pressure of the ground and the ground surface when the rock core is taken out is reduced. And meanwhile, the core is convenient to store.
The invention is further provided with: the transmission mechanism comprises a first protective shell arranged on the surface of one end of the first threaded drill pipe and the surface of one end of the second threaded drill pipe, one side of the first protective shell is bolted with the second protective shell, a bidirectional driving motor is fixedly arranged in the second protective shell, a gear meshing plate is fixedly arranged at the output end of the bidirectional driving motor, a threaded transmission ring in threaded connection with the first threaded drill pipe and the second threaded drill pipe is slidably connected in the first protective shell, and a transmission gear meshed with the gear meshing plate is fixedly connected on the surface of the threaded transmission ring.
By adopting the technical scheme, the portable effect of the sampler can be improved, and meanwhile, the deeper rock core can be drilled, so that the flexibility of the sampler is improved, and the sampler can be used in geological scientific investigation experiments with strong fluidity, working environments such as mines, oil fields and the like.
The invention is further provided with: the sampling mechanism comprises a core container arranged inside a first threaded drill pipe, a sealing cover is connected to the top thread of the inner cavity of the core container, a baffle groove is formed in the bottom of the core container, a second rotating rod is connected to the inner portion of the baffle groove in a rotating mode, a sealing baffle is fixedly connected to the surface of the second rotating rod, torsion springs fixedly connected with the second rotating rod are fixedly connected to the two sides of the sealing baffle, and sealing gaskets are adhered to the two sides of the sealing baffle.
By adopting the technical scheme, the functions of tightness and internal pressure when the sampler takes out the rock core can be maintained, so that the risk of cracking caused by different pressures of the ground and the earth surface when the rock core is taken out is reduced. And meanwhile, the core is convenient to store.
The invention is further provided with: the second protective shell is far away from one side of the first protective shell and is fixedly provided with a protective net matched with the bidirectional driving motor, and the top and the bottom of the threaded driving ring are both in sliding connection with sliding gaskets bonded with the first protective shell.
By adopting the technical scheme, sundries are prevented from entering the second protective shell to damage the work of the bidirectional driving motor, and the threaded driving ring and the first protective shell are connected through the sliding gasket, so that the threaded driving ring can rotate more smoothly.
The invention is further provided with: the surface of first protective housing bottom all bolted connection has the connector link, the inside rotation of connector link is connected with the supporting leg, the one end welding that the connecting link was kept away from to the supporting leg has supporting baseplate.
By adopting the technical scheme, the sampler can be supported when being prevented from being on the ground, and the stability of the sampler during working is improved.
The invention is further provided with: the top of the first threaded drill pipe, the second threaded drill pipe and the third threaded drill pipe and the inside of the threaded connector are respectively provided with a positioning jack in a penetrating way, and the inside of the positioning jacks is inserted with a positioning inserting rod.
By adopting the technical scheme, the tightness of connection between the first threaded drill pipe and the second threaded drill pipe as well as between the first threaded drill pipe and the third threaded drill pipe is improved.
The invention is further provided with: the inside of the first protective shell is rotationally connected with a first rotating rod, and the surface of the first rotating rod is fixedly sleeved with a positioning rotating wheel which is in sliding connection with the first threaded drill pipe, the second threaded drill pipe and the third threaded drill pipe.
By adopting the technical scheme, the moving secondary positioning of the first threaded drill pipe, the second threaded drill pipe and the third threaded drill pipe can be realized, and the moving stability of the first threaded drill pipe, the second threaded drill pipe and the third threaded drill pipe is improved.
The invention is further provided with: the inside welding of first screw thread drill pipe has spacing fixture block, the spacing draw-in groove with spacing fixture block joint is seted up to the surface of core container, the spacing spout with spacing draw-in groove intercommunication is still seted up to the surface of core container.
By adopting the technical scheme, the limiting clamping block is driven to slide to the position of the limiting chute in the limiting clamping groove by rotating the core container, so that the core container can be pulled out of the first threaded drill pipe by sliding the limiting clamping block in the limiting chute upwards, and the core container is installed in the first threaded drill pipe only by reverse operation.
The invention is further provided with: the bottom of the first threaded drill pipe is welded with drilling teeth, the bottom of the inner cavity of the first threaded drill pipe is welded with a limited diameter ring block, and the bottom of the inner cavity of the core container is welded with a core nipper.
By adopting the technical scheme, the first threaded drill pipe is conveniently drilled downwards by arranging the drilling teeth, the diameter of the rock core can be limited by arranging the diameter limiting ring block, the inside of the rock core container can be ensured to be entered, and the rock core nipper can be clamped with the rock core bottom and the rock block when the first threaded drill pipe moves upwards.
The using method of the high-tightness core pressure maintaining sampler comprises the following steps: the method comprises the following steps:
step 1, machine drilling is carried out, namely aligning threaded connectors at the bottoms of a second threaded drill pipe and a third threaded drill pipe with the tops of the first threaded drill pipe and the second threaded drill pipe respectively, rotating the first threaded drill pipe, the second threaded drill pipe and the third threaded drill pipe to form a whole, then starting a bidirectional driving motor to drive a gear meshing plate to rotate, enabling a gear meshing plate to mesh with a transmission gear, enabling a threaded driving ring to rotate in a first protective shell, and further driving the first threaded drill pipe, the second threaded drill pipe and the third threaded drill pipe to rotate downwards along a core hole which is formed in advance by a drilling machine, and continuously connecting a new threaded drill pipe at the top of the third threaded drill pipe, so that the maximum drilling depth of the first threaded drill pipe is prolonged;
step 2, sampling the rock core, namely continuously enabling the bidirectional driving motor to drive the gear engagement plate to rotate when the first threaded drilling pipe drills down to the bottom of a rock core hole, so that the gear engagement plate is engaged with the transmission gear, and then the threaded transmission ring can rotate in the first protective shell, so that the first threaded drilling pipe is driven to drill the rock core, the top of the rock core is enabled to lift the sealing baffle plate, the sealing baffle plate is enabled to be attached into the groove of the baffle plate after being opened, and the torsion spring is driven to twist through the second rotating rod, so that the rock core is drilled into the rock core container;
and 3, taking out the rock core, namely reversely rotating by starting a bidirectional driving motor, so that the gear engagement plate is engaged with the transmission gear, then the threaded driving ring can reversely rotate in the first protective shell, thereby=driving the first threaded drilling pipe to downwards move in a rock core hole, then clamping the rock core through a rock core clamp plate, enabling a return force generated after torsion spring is twisted to drive the second rotating rod to control the sealing baffle to reset, sealing the bottom of the rock core container, enabling the rock core to be sealed in the rock core container, finally driving the first threaded drilling pipe to return to the ground through the first protective shell, and detaching the first threaded drilling pipe, thereby taking out the internal rock core container.
In summary, the invention has the following beneficial effects:
1. the threaded connectors at the bottoms of the second threaded drill pipe and the third threaded drill pipe are aligned with the tops of the first threaded drill pipe and the second threaded drill pipe respectively and rotate, so that the first threaded drill pipe, the second threaded drill pipe and the third threaded drill pipe can be integrated, and the maximum length of the first threaded drill pipe is extended by continuously connecting a new threaded drill pipe to the top of the third threaded drill pipe, the purpose of extending the maximum drilling depth of the sampler according to the depth of a rock core hole is achieved, and therefore rock core samples with different depths can be extracted, and the threaded drill pipes can be detached and are convenient to carry;
2. the bidirectional driving motor is started to drive the gear meshing plate to rotate, so that the gear meshing plate is meshed with the transmission gear, and then the threaded driving ring can rotate in the first protective shell, so that the first threaded drilling pipe, the second threaded drilling pipe and the third threaded drilling pipe are driven to downwards rotate along a core hole which is formed in advance by the drilling machine to drill the core, the effect that the sampler is portable is achieved, meanwhile, a deeper core can be drilled is achieved, the flexibility of the sampler is improved, and the sampler can be used in geological scientific investigation experiments, mines, oil fields and other working environments with strong liquidity.
3. The drill is performed on the rock core through the first threaded drill pipe, the sealing baffle is lifted at the top of the rock core, the sealing baffle is made to be attached to the inside of the baffle groove after being opened, and the torsion spring is driven to twist through the second rotating rod, so that the rock core is drilled into the inside of the rock core container, then the rock core is clamped off through the rock core clamp plate, the second rotating rod is driven by the return force generated after the torsion spring is twisted to control the sealing baffle to reset, the bottom of the rock core container is sealed, the functions of maintaining the sealing performance and the internal pressure when the rock core is taken out by the sampler are achieved, and the risk of cracking due to different pressure of the ground and the ground surface when the rock core is taken out is reduced. And meanwhile, the core is convenient to store.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a cross-sectional view of the structure of the present invention;
FIG. 3 is a top cross-sectional view of the structural core vessel of the present invention;
FIG. 4 is an enlarged view of the invention at A in FIG. 2;
FIG. 5 is an enlarged view of the invention at B in FIG. 2;
fig. 6 is a top cross-sectional view of a partial structure of the present invention.
Reference numerals: 1. a first threaded drill pipe; 2. a second threaded drill pipe; 3. a third threaded drill pipe; 4. a threaded connector; 5. a protective net; 6. a connecting buckle; 7. support legs; 8. a support base plate; 9. sliding the gasket; 10. positioning the jack; 11. positioning the inserted link; 12. a first rotating lever; 13. positioning a rotating wheel; 14. a limit clamping block; 15. a limit clamping groove; 16. core nipper; 17. drilling teeth; 18. a diameter limiting ring block; 19. limiting sliding grooves; 101. a first protective housing; 102. a second protective housing; 103. a bi-directional drive motor; 104. a gear engagement plate; 105. a threaded drive ring; 106. a transmission gear; 201. a core container; 202. a baffle groove; 203. sealing cover; 204. a second rotating lever; 205. a torsion spring; 206. a sealing baffle; 207. and a sealing gasket.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1:
referring to fig. 1, 2, 4 and 5, a high-tightness core pressure maintaining sampler comprises a first threaded drill pipe 1, a second threaded drill pipe 2 is arranged at the top of the first threaded drill pipe 1, a third threaded drill pipe 3 is arranged at the top of the second threaded drill pipe 2, threaded connectors 4 which are respectively connected with the first threaded drill pipe 1 and the second threaded drill pipe 2 in a threaded manner are welded at the bottoms of the second threaded drill pipe 2 and the third threaded drill pipe 3, transmission mechanisms are arranged on the surfaces of the first threaded drill pipe 1 and the second threaded drill pipe 2, sampling mechanisms are arranged inside the first threaded drill pipe 1, the threaded connectors 4 at the bottoms of the second threaded drill pipe 2 and the third threaded drill pipe 3 are aligned with the tops of the first threaded drill pipe 1 and the second threaded drill pipe 2 respectively, and the first threaded drill pipe 1, the second threaded drill pipe 2 and the third threaded drill pipe 3 can be made into a whole, and a new threaded drill pipe is continuously connected to the top of the third threaded drill pipe 3, so that the maximum length of the first threaded drill pipe 1 is set, the purpose that the maximum down drilling depth of a sampler can be extended according to the depth of a rock core hole is achieved, rock core samples with different depths can be extracted, and the threaded drill pipes can be detached and are convenient to carry. The bidirectional driving motor 103 is started to drive the gear engagement plate 104 to rotate, so that the gear engagement plate 104 is engaged with the transmission gear 106, and then the threaded driving ring 105 can rotate in the first protective shell 101, so that the first threaded drilling pipe 1, the second threaded drilling pipe 2 and the third threaded drilling pipe 3 are driven to downwards rotate along a core hole which is formed in advance of a drilling machine, the drill is started, the portability of the sampler is improved, the deeper core effect is achieved, the flexibility of the sampler is improved, and the sampler can be used in geological scientific experiments with strong liquidity, mine, oil fields and other working environments.
Referring to fig. 1 and 2, the transmission mechanism comprises a first protective housing 101 arranged on one end surface of a first threaded drill pipe 1 and a second threaded drill pipe 2, wherein the first protective housing 101 is connected with a second protective housing 102 in a bolting mode, a bidirectional driving motor 103 is fixedly arranged in the second protective housing 102, a gear engagement plate 104 is fixedly arranged at the output end of the bidirectional driving motor 103, a threaded transmission ring 105 in threaded connection with the first threaded drill pipe 1 and the second threaded drill pipe 2 is slidably connected in the first protective housing 101, and a transmission gear 106 engaged with the gear engagement plate 104 is fixedly connected on the surface of the threaded transmission ring 105.
Referring to fig. 1 and 2, a protection net 5 matched with a bidirectional driving motor 103 is fixedly installed on one side, far away from the first protection shell 101, of the second protection shell 102, sliding gaskets 9 adhered to the first protection shell 101 are slidably connected to the top and the bottom of the threaded driving ring 105, sundries are prevented from entering the second protection shell 102, the bidirectional driving motor 103 is damaged to work, and the threaded driving ring 105 and the first protection shell 101 are connected through the sliding gaskets 9, so that the threaded driving ring 105 can rotate more smoothly.
Referring to fig. 1, 2 and 4, the top parts of the first screw drill pipe 1, the second screw drill pipe 2 and the third screw drill pipe 3 and the inside of the screw connector 4 are respectively provided with a positioning jack 10 in a penetrating way, and the inside of the positioning jack 10 is provided with a positioning inserted rod 11 in a plugging way, so that the connection tightness between the first screw drill pipe 1, the second screw drill pipe 2 and the third screw drill pipe 3 is improved.
Referring to fig. 1, 2 and 4, the first rotary rod 12 is rotatably connected to the inside of the first protective housing 101, and the positioning wheel 13 slidably connected to the first screw drill pipe 1, the second screw drill pipe 2 and the third screw drill pipe 3 is fixedly sleeved on the surface of the first rotary rod 12, so that the movement of the first screw drill pipe 1, the second screw drill pipe 2 and the third screw drill pipe 3 can be positioned secondarily, and the stability of the movement of the first screw drill pipe 1, the second screw drill pipe 2 and the third screw drill pipe 3 is improved.
The use process is briefly described: when the sampler is required to extend the maximum drilling depth of the sampler according to the depth of a rock core hole and the portability of the sampler is improved, the threaded connectors 4 at the bottoms of the second threaded drill pipe 2 and the third threaded drill pipe 3 are respectively aligned with the tops of the first threaded drill pipe 1 and the second threaded drill pipe 2 and rotate, so that the first threaded drill pipe 1, the second threaded drill pipe 2 and the third threaded drill pipe 3 can be integrated, then the bidirectional driving motor 103 is started to drive the gear engagement plate 104 to rotate, the gear engagement plate 104 is meshed with the transmission gear 106, the threaded driving ring 105 can rotate in the first protective housing 101, the first threaded drill pipe 1, the second threaded drill pipe 2 and the third threaded drill pipe 3 are driven to rotate downwards along the rock core hole pre-opened by the drilling machine, the top of the third threaded drill pipe 3 is continuously connected with the new threaded drill pipe, the maximum drilling depth of the first threaded drill pipe 1 is extended, the gear engagement plate 104 is driven to rotate by the bidirectional driving motor 103, the gear engagement plate 104 is driven to rotate with the transmission gear 106, the rock core is driven to rotate by the transmission gear engagement plate 104, the drill plate 206 is driven to rotate in the inside the first protective housing 101, and the drill plate is driven to rotate by the transmission gear engagement plate 206, and the inside the drill plate is driven to rotate, and the drill the rock core is further driven to rotate in the inside the sealing ring 201, and the sealing ring is driven to rotate, and the sealing ring 206 is driven to rotate, and the inside the rock core is driven to rotate, and the rock core is driven to rotate.
Example 2:
referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, a high-tightness core pressure maintaining sampler, which comprises a first threaded drill pipe 1, wherein the top of the first threaded drill pipe 1 is provided with a second threaded drill pipe 2, the top of the second threaded drill pipe 2 is provided with a third threaded drill pipe 3, the bottoms of the second threaded drill pipe 2 and the third threaded drill pipe 3 are welded with threaded connectors 4 which are respectively connected with the first threaded drill pipe 1 and the second threaded drill pipe 2 in a threaded manner, the surfaces of the first threaded drill pipe 1 and the second threaded drill pipe 2 are provided with a transmission mechanism, the inside of the first threaded drill pipe 1 is provided with a sampling mechanism, the core is opened by the first threaded drill pipe 1, the top of the core is lifted by the sealing baffle 206, the sealing baffle 206 is attached to the inside of the baffle groove 202 after being opened and the torsion spring 205 is driven by the second rotating rod 204 to twist the core, so that the core is drilled into the inside of the core container 201, then the core is clamped by the core clamp plate 16, the torsion spring 205 is twisted, the back force generated by the torsion spring is driven by the second rotating rod 204, and the pressure of the core is controlled to be reset by the second rotating rod 204, and the core is not required to reach the ground, and the pressure of the sealing baffle is not required to be broken, and the pressure is reduced when the pressure is not required to reach the ground, and the ground. And meanwhile, the core is convenient to store.
Referring to fig. 2, 3 and 5, the sampling mechanism comprises a core container 201 arranged in the first threaded drill pipe 1, a sealing cover 203 is connected with the top thread of the inner cavity of the core container 201, a baffle groove 202 is formed in the bottom of the core container 201, a second rotating rod 204 is connected with the inner part of the baffle groove 202 in a rotating mode, a sealing baffle 206 is fixedly connected with the surface of the second rotating rod 204, torsion springs 205 fixedly connected with the second rotating rod 204 are fixedly connected with the two sides of the sealing baffle 206, sealing gaskets 207 are adhered to the two sides of the sealing baffle 206, and the functions of tightness and internal pressure when the sampler takes out the core can be maintained, so that the risk of cracking due to different pressures on the ground and the ground surface when the core is taken out is reduced. And meanwhile, the core is convenient to store.
Referring to fig. 1 and 2, the surface of the bottom of the first protective casing 101 is bolted with a connecting buckle 6, the inside of the connecting buckle 6 is rotationally connected with supporting legs 7, one ends of the supporting legs 7 far away from the connecting buckle 6 are welded with a supporting bottom plate 8, so that the sampler can be supported when the sampler is prevented from being on the ground, and the stability of the sampler during working is improved.
Referring to fig. 2, 4 and 6, the limiting clamping block 14 is welded in the first threaded drill pipe 1, the limiting clamping groove 15 clamped with the limiting clamping block 14 is formed in the surface of the core container 201, the limiting sliding groove 19 communicated with the limiting clamping groove 15 is further formed in the surface of the core container 201, the core container 201 is rotated to drive the limiting clamping block 14 to slide to the position of the limiting sliding groove 19 in the limiting clamping groove 15, so that the core container 201 can be pulled out of the first threaded drill pipe 1 through the sliding of the limiting clamping block 14 in the limiting sliding groove 19 when being pulled upwards, and the core container 201 is installed in the first threaded drill pipe 1 only by reverse operation.
Referring to fig. 1, 2 and 5, the bottom of the first screw drill pipe 1 is welded with a drilling tooth 17, the bottom of the inner cavity of the first screw drill pipe 1 is welded with a limited diameter ring block 18, the bottom of the inner cavity of the core container 201 is welded with a core nipper 16, the drilling tooth 17 is arranged to facilitate downward drilling of the first screw drill pipe 1, the limited diameter ring block 18 is arranged to limit the diameter of a core, the core can enter the core container 201, and the core nipper 16 is arranged to clamp the bottom of the core with the rock block when the first screw drill pipe 1 moves upward.
The use process is briefly described: when the tightness and the internal pressure of the sampler when the core is taken out are required to be maintained, the bidirectional driving motor 103 is started to reversely rotate, so that the gear engagement plate 104 and the transmission gear 106 are engaged, then the threaded driving ring 105 can reversely rotate in the first protective shell 101, so that the first threaded drill pipe 1 is driven to move downwards in a core hole, then the core is clamped by the core clamping plate 16, the second rotating rod 204 is driven by the return force generated after the torsion spring 205 is twisted to control the sealing baffle 206 to reset, the bottom of the core container 201 is sealed, the core can be sealed in the core container 201, finally the first threaded drill pipe 1 is driven to return to the ground by the first protective shell 101, the first threaded drill pipe 1 is disassembled, and the core container 201 in the interior is taken out.
Claims (10)
1. The utility model provides a high leakproofness rock core pressurize sampler, includes first screw thread drill pipe (1), its characterized in that: the top of first screw thread drill pipe (1) is provided with second screw thread drill pipe (2), the top of second screw thread drill pipe (2) is provided with third screw thread drill pipe (3), the bottom of second screw thread drill pipe (2) and third screw thread drill pipe (3) all welds threaded connection head (4) with first screw thread drill pipe (1) and second screw thread drill pipe (2) threaded connection respectively, the surface of first screw thread drill pipe (1) and second screw thread drill pipe (2) is provided with drive mechanism, the inside of first screw thread drill pipe (1) is provided with sampling mechanism.
2. The high-tightness core pressure maintaining sampler as claimed in claim 1, wherein: the transmission mechanism comprises a first protective shell (101) arranged on the surface of one end of a first threaded drill pipe (1) and a second threaded drill pipe (2), wherein the first protective shell (101) is connected with a second protective shell (102) in a bolt manner, a bidirectional driving motor (103) is fixedly arranged in the second protective shell (102), a gear engaging plate (104) is fixedly arranged at the output end of the bidirectional driving motor (103), a threaded driving ring (105) in threaded connection with the first threaded drill pipe (1) and the second threaded drill pipe (2) is connected in a sliding manner in the first protective shell (101), and a transmission gear (106) engaged with the gear engaging plate (104) is fixedly connected with the surface of the threaded driving ring (105).
3. The high-tightness core pressure maintaining sampler as claimed in claim 1, wherein: sampling mechanism is including setting up in the inside core container (201) of first screw drill pipe (1), the top threaded connection of core container (201) inner chamber has sealed lid (203), baffle recess (202) have been seted up to the bottom of core container (201), the inside rotation of baffle recess (202) is connected with second dwang (204), the fixed surface of second dwang (204) is connected with sealing baffle (206), the equal fixedly connected with in both sides of sealing baffle (206) with second dwang (204) fixed connection torsion spring (205), sealing gasket (207) have all been bonded in both sides of sealing baffle (206).
4. The high-tightness core pressure maintaining sampler as claimed in claim 2, wherein: one side of the second protective shell (102) far away from the first protective shell (101) is fixedly provided with a protective net (5) matched with the bidirectional driving motor (103), and the top and the bottom of the threaded driving ring (105) are both in sliding connection with sliding gaskets (9) adhered to the first protective shell (101).
5. The high-tightness core pressure maintaining sampler as claimed in claim 2, wherein: the surface of first protective housing (101) bottom all bolts has connector link (6), the inside rotation of connector link (6) is connected with supporting leg (7), the one end welding that supporting leg (7) kept away from connector link (6) has supporting baseplate (8).
6. The high-tightness core pressure maintaining sampler as claimed in claim 1, wherein: the top of first screw thread drill pipe (1), second screw thread drill pipe (2) and third screw thread drill pipe (3) and the inside of screwed connection head (4) all run through and open positioning jack (10), the inside of positioning jack (10) is pegged graft and is had location inserted bar (11).
7. The high-tightness core pressure maintaining sampler as claimed in claim 2, wherein: the inside rotation of first protective housing (101) is connected with first dwang (12), the fixed surface of first dwang (12) cup joints with first screw thread drill pipe (1), second screw thread drill pipe (2) and third screw thread drill pipe (3) sliding connection's location runner (13).
8. The high-tightness core pressure maintaining sampler as claimed in claim 3, wherein: the inside welding of first screw thread drill pipe (1) has spacing fixture block (14), spacing draw-in groove (15) with spacing fixture block (14) joint are seted up to the surface of core container (201), spacing spout (19) with spacing draw-in groove (15) intercommunication are still seted up to the surface of core container (201).
9. The high-tightness core pressure maintaining sampler as claimed in claim 3, wherein: the bottom of first screw thread drill pipe (1) is welded and is bored tooth (17), the bottom welding finite diameter annular piece (18) of first screw thread drill pipe (1) inner chamber, the bottom welding of the inner chamber of core container (201) has core nipper (16).
10. The method for using the high-tightness core pressure maintaining sampler according to claims 1-9, wherein the method comprises the following steps: the method comprises the following steps:
step 1, machine drilling is carried out, namely aligning threaded connectors (4) at the bottoms of a second threaded drill pipe (2) and a third threaded drill pipe (3) with the tops of the first threaded drill pipe (1) and the second threaded drill pipe (2) respectively, rotating the first threaded drill pipe (1), the second threaded drill pipe (2) and the third threaded drill pipe (3) into a whole, then starting a bidirectional driving motor (103) to drive a gear engagement plate (104) to rotate, enabling the gear engagement plate (104) to be meshed with a transmission gear (106) and enabling a threaded transmission ring (105) to rotate in a first protective shell (101), so as to drive the first threaded drill pipe (1), the second threaded drill pipe (2) and the third threaded drill pipe (3) to rotate downwards along a core hole which is formed in advance of a drilling machine, and continuously connecting a new threaded drill pipe on the top of the third threaded drill pipe (3), so that the maximum drilling depth of the first threaded drill pipe (1) can be extended;
step 2, sampling a rock core, namely continuously enabling a bidirectional driving motor (103) to drive a gear engagement plate (104) to rotate when a first threaded drill pipe (1) drills down to the bottom of a rock core hole, so that the gear engagement plate (104) is engaged with a transmission gear (106) and then a threaded driving ring (105) can rotate in the first protective shell (101), so that the first threaded drill pipe (1) is driven to drill the rock core, the top of the rock core is enabled to jack up a sealing baffle (206), the sealing baffle (206) is enabled to be attached into the inside of a baffle groove (202) after being opened, and a torsion spring (205) is driven to twist through a second rotating rod (204), so that the rock core is drilled into the rock core container (201);
step 3, taking out the rock core, namely, reversely rotating the bidirectional driving motor (103) through starting, so that the gear engagement plate (104) is meshed with the transmission gear (106), then reversely rotating the threaded transmission ring (105) in the first protective shell (101), driving the first threaded drill pipe (1) to move downwards in a rock core hole, then clamping the rock core through the rock core clamp plate (16), enabling a return force generated after torsion of the torsion spring (205) to drive the second rotating rod (204) to control the sealing baffle (206) to reset, sealing the bottom of the rock core container (201), enabling the rock core to be sealed in the rock core container (201), finally driving the first threaded drill pipe (1) to return to the ground through the first protective shell (101), disassembling the first threaded drill pipe (1), and taking out the internal rock core container (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311019866.2A CN116950591A (en) | 2023-08-14 | 2023-08-14 | High-tightness core pressure maintaining sampler and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311019866.2A CN116950591A (en) | 2023-08-14 | 2023-08-14 | High-tightness core pressure maintaining sampler and use method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116950591A true CN116950591A (en) | 2023-10-27 |
Family
ID=88449211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311019866.2A Pending CN116950591A (en) | 2023-08-14 | 2023-08-14 | High-tightness core pressure maintaining sampler and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116950591A (en) |
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2023
- 2023-08-14 CN CN202311019866.2A patent/CN116950591A/en active Pending
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