CN111155930A - Mechanical hand-held type seabed pressure-maintaining coring miniature drilling machine - Google Patents

Mechanical hand-held type seabed pressure-maintaining coring miniature drilling machine Download PDF

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Publication number
CN111155930A
CN111155930A CN202010098496.6A CN202010098496A CN111155930A CN 111155930 A CN111155930 A CN 111155930A CN 202010098496 A CN202010098496 A CN 202010098496A CN 111155930 A CN111155930 A CN 111155930A
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CN
China
Prior art keywords
pressure
connecting shaft
hole
drilling tool
shaft
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Pending
Application number
CN202010098496.6A
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Chinese (zh)
Inventor
金永平
刘亮
彭佑多
万步炎
龚俊
颜健
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Hunan University of Science and Technology
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Hunan University of Science and Technology
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Application filed by Hunan University of Science and Technology filed Critical Hunan University of Science and Technology
Priority to CN202010098496.6A priority Critical patent/CN111155930A/en
Publication of CN111155930A publication Critical patent/CN111155930A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/12—Underwater drilling
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/03—Couplings; joints between drilling rod or pipe and drill motor or surface drive, e.g. between drilling rod and hammer
    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/086—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder
    • 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
    • E21B25/10—Formed core retaining or severing means

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (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)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

The invention discloses a mechanical hand-held type seabed pressure-maintaining coring miniature drilling machine which comprises a handle, a power head, a reduction gearbox, a drilling tool abandoning device, a drilling tool, a pressure compensator and a core pressure-maintaining device. A water supply joint and a power head are arranged on a top plate of the reduction gearbox, the power head is connected with a driving gear shaft through a power head output shaft, and the driving gear shaft is arranged in the reduction gearbox through a bearing; a driving gear is arranged on the driving gear shaft; the main shaft is arranged in the reduction gearbox through a bearing, the main shaft is parallel to the driving gear shaft, a driven gear is arranged on the main shaft, and the driving gear is meshed with the driven gear; the main shaft is provided with a central hole which is communicated with a water inlet hole of the water supply joint; the inner cavity of the lower part is provided with a suspension clamping groove which is connected with the drilling tool through a disposable connecting shaft with a suspension clamp. The invention has simple and compact structure, small volume and high reliability, can be held by a hand mechanically and abandons the drilling tool in emergency; the safety of the submersible is ensured. The core can be preserved in the pressure-maintaining cylinder, and the pressure-maintaining coring of the seabed surface rock stratum is realized.

Description

Mechanical hand-held type seabed pressure-maintaining coring miniature drilling machine
Technical Field
The invention relates to a mechanical hand-held type seabed pressure-maintaining coring miniature drilling machine.
Background
The method is characterized in that drilling sampling is carried out on seabed solid mineral resources by using drilling sampling equipment, which is the basis for analyzing the components and the grades of the seabed solid mineral resources, and as ocean equipment such as a flood dragon manned submersible, a deep sea warrior manned submersible and the like are developed and widely applied to seabed resource exploration, some seabed core sampling drilling machines matched with the manned submersible are developed in succession. Patent ZL200420036284.1 discloses a shallow hole corer of a deep sea manned submersible, which mainly comprises a hydraulic drilling power head, a drilling power head angle adjusting device, a compensation and rod stabilizing device, a core remover abandoning device, a drill tool abandoning device for drilling accidents and the like, and has good working reliability, stability and safety. And when the coring has destructive faults such as drill jamming and the like, the coring device or parts thereof can be discarded by using the discarding device so as to ensure that the submersible vehicle and people can safely return. However, the coring device has a complex overall structure, a plurality of actuating mechanisms, a plurality of operating points and high operating difficulty, and must be fixedly installed on the submersible, so that the manned submersible must be operated to be close to the point to be cored before the coring operation of the seabed solid mineral resources is performed each time, and the manned submersible is excessively close to the point to be cored due to the uneven distribution state of the seabed solid mineral resources on the seabed, which brings great safety concern to the manned submersible. Meanwhile, the coring device is fixedly arranged on the submersible, and the drilling angle can be adjusted only through the front and back angle adjusting oil cylinder and the left and right swinging oil cylinder, so that the adjustable drilling angle range is smaller. Furthermore, because the shallow hole core extractor of the existing deep-sea manned submersible is of an open type and non-pressure-retaining type, when the core extractor returns to a mother ship on the water surface after drilling and sampling are completed on the seabed, the problems that the core sample is easily polluted by upper seawater, and the hydropathic microorganisms in the core sample die due to the reduction of external pressure are easily caused.
At present, the submersible is provided with the operation mechanical arm, the operation mechanical arm is used for grabbing an operation tool to carry out drilling and sampling operation of seabed solid mineral resources, safety worries brought to the submersible caused by the fact that the submersible/ROV is too close to a point to be cored can be effectively solved, and meanwhile flexibility of the operation mechanical arm can be used for achieving flexible adjustment of different drilling angles. Therefore, a mechanical hand-held seabed coring and pressure maintaining micro-drilling machine which can be held by a submersible operation manipulator, has simple structure, convenient operation and flexibly adjustable drilling angle along with the operation manipulator and can rapidly abandon a drilling tool in emergency needs to be researched.
Disclosure of Invention
In order to solve the technical problems, the invention provides the mechanical hand-held type seabed pressure-maintaining coring miniature drilling machine which has a simple structure and is convenient to operate, and can discard a drilling tool in an emergency, so that the operation safety of a submersible is ensured.
In order to realize the scheme, the invention adopts the following technical scheme:
a mechanical hand-held type seabed pressure-maintaining coring miniature drilling machine comprises a power head, a reduction gearbox, a drilling tool abandoning device, a drilling tool and a rock core pressure-maintaining device; a water supply joint and a power head are arranged on a top plate of the reduction box, and an output shaft of the power head is connected with an input shaft of the reduction box; the output shaft of the reduction gearbox is provided with a central hole which is communicated with a water inlet hole of the water supply joint;
the drilling tool abandoning device comprises a spring, a water supply pressure plate, a fixing ring and a abandonable connecting shaft; the bottom of the central hole of the output shaft is in a bell mouth shape, and a hanging clamping groove is arranged on the side wall of the central hole of the output shaft; the middle part of the central hole of the output shaft is provided with a spring fixing flange and threads, the threads are arranged below the spring fixing flange, and a fixing ring is in threaded connection with the threads; the upper end of a pressure rod of the water supply pressure plate passes through a central hole of the fixing ring to be connected with the pressure plate, and a spring is arranged between the pressure plate and the spring fixing flange; the upper end of the disposable connecting shaft is sleeved with a sealing ring, the upper end of the disposable connecting shaft is inserted into the lower end of the central hole of the output shaft, and is matched with a suspension clamping groove on the output shaft through a suspension clamp; the bottom of the fixing ring is correspondingly provided with a plurality of limiting blocks with the top of the disposable connecting shaft, and the bottom of the fixing ring is matched with the limiting blocks at the top of the disposable connecting shaft to realize that the output shaft drives the disposable connecting shaft to rotate; the lower end of the disposable connecting shaft is connected with the drilling tool, and the rock core pressure maintaining device can be connected with the drilling tool to compensate the pressure of the drilling tool.
In the mechanical hand-held seabed pressure-maintaining coring miniature drilling machine, the pressure valve is arranged in the center hole of the disposable connecting shaft, and the side wall of the lower part of the disposable connecting shaft is provided with the rotating speed sensor.
The mechanical hand-held type seabed pressure maintaining coring miniature drilling machine further comprises a pressure compensator I, wherein the pressure compensator I is fixedly arranged on the side wall of the reduction gearbox; the pressure compensator I comprises a pressure compensation cylinder, an end cover, a piston and a spring; the lower end of the pressure compensation cylinder is provided with an opening, the opening at the lower end of the pressure compensation cylinder is provided with an end cover, and the side wall at the lower end of the pressure compensation cylinder is provided with a seawater inlet; a piston is arranged in the pressure compensation cylinder, and the piston is connected with the end cover through a spring; the top of the pressure compensation cylinder is provided with two oil pipe joints, one oil pipe joint is connected with an oil inlet pipe, the oil inlet pipe is provided with a one-way valve, the other oil pipe joint is connected with one end of an oil outlet pipe, the top plate of the reduction gearbox is provided with an oil pipe joint, and the other end of the oil outlet pipe is connected with the oil pipe joint on the reduction gearbox.
In the mechanical handheld seabed pressure maintaining coring miniature drilling machine, the core pressure maintaining device comprises a pressure maintaining cylinder and a pressure compensator II, a central hole of the pressure maintaining cylinder is in a step shape, a sealing ring is arranged at the transition surface of the step, and the pressure maintaining cylinder is sleeved outside the drilling tool; the pressure compensator II comprises a pressure compensation cylinder, a piston, a compensator end cover and an inflation valve; one end of the pressure compensation cylinder is opened, and the other end of the pressure compensation cylinder is communicated with the bottom of the central hole of the pressure maintaining cylinder through a high-pressure pipe; the compensator end cover is fixed at the opening of the pressure compensation cylinder, the inflation valve is communicated with the pressure compensation cylinder through a high-pressure pipe, and the piston is arranged in the pressure compensation cylinder.
In the above mechanical hand-held seabed pressure-maintaining coring miniature drilling machine, the pressure valve comprises a valve core, a water supply pressure rod, a spring and a fixing ring; the disposable connecting shaft is provided with a valve core hole and a pressure rod hole, the valve core hole and the pressure rod hole are arranged along the axial direction of the disposable connecting shaft, the valve core hole is communicated with the pressure rod hole, a valve core and a fixing ring are arranged in the valve core hole, a spring is arranged between the valve core and the fixing ring, the pressure rod hole can be blocked by the valve core, the valve core is connected with a water supply pressure rod, and the water supply pressure rod extends out of the pressure rod hole.
In the mechanical handheld seabed pressure maintaining coring miniature drilling machine, the top surface of the end cover of the pressure compensator I is provided with a support column, and the spring is sleeved on the support column.
In the above-mentioned mechanical hand-held type seabed pressurize coring micro-drill, still include the handle, the handle fixed mounting on the lateral wall of reducing gear box.
In the mechanical hand-held type seabed pressure-maintaining coring miniature drilling machine, the water inlet at the top of the water supply joint is provided with the water inlet interface, and the water inlet interface is used for connecting the water inlet pipe.
In the mechanical handheld seabed pressure maintaining coring miniature drilling machine, the number of the limiting blocks arranged at the bottom of the fixing ring and at the top of the disposable connecting shaft is 4-10.
Compared with the prior art, the invention has the beneficial effects that: the invention has simple and compact structure, small volume and high reliability, can be held by a hand mechanically and abandons the drilling tool in emergency; the core can be preserved in the pressure-maintaining cylinder, and the pressure-maintaining coring of the seabed surface rock stratum is realized.
The invention is held by a submersible manipulator, can carry out multi-angle drilling and coring according to the change of the submarine topography, and can realize various functions of submarine coring, drilling and the like by replacing different drill bits; the disposable connecting shaft is connected with the drilling machine in a buckling mode, and when a drilling tool jamming accident occurs, the drilling tool is discarded in a mode of discarding the disposable connecting shaft, so that the safety of the submersible is guaranteed, and the fault maintenance cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the disposable connecting shaft of the present invention.
FIG. 3 is a view showing the disposable connecting shaft axially entering the spindle according to the present invention.
FIG. 4 is a view showing the disposable connecting shaft hanging clip of the present invention axially engaged in the notch of the spindle slot.
FIG. 5 is a view showing the disposable spindle hanging clip of the present invention being rotatably engaged with the spindle slot.
Fig. 6 is a view showing a state where the drill body and the drilling tool of the present invention are not mounted.
Fig. 7 is a view showing a state where the installation of the drill body and the drill of the present invention is completed.
Fig. 8 is a state diagram of the drilling coring of the present invention.
Fig. 9 is a diagram of the present invention in a state of carrying a core into a pressure retention cartridge.
Figure 10 is a view of the core of the present invention stored in a pressure retention cartridge.
Fig. 11 is a state diagram of the emergency discard drill pipe of the present invention.
In the figure:
1-handle, 2-reduction box, 3-driven gear, 4-spring, 5-bearing, 6-lower cover, 7-main shaft, 8-water inlet pipe, 9-water inlet interface, 10-water supply joint, 11-sealing ring, 12-power head, 13-power head output shaft, 14-connecting sleeve, 15-one-way valve, 16-oil outlet pipe, 17-pressure compensation cylinder, 18-piston, 19-seawater inlet, 20-pillar, 21-compensator end cover, 22-driving gear shaft, 23-key, 24-oil seal, 25-fixing ring, 26-limiting block, 27-water pressure plate, 28-rotation speed sensor, 29-water pressure rod, 30-suspension clamp, 31-valve core, 32-disposable connecting shaft, 33-drilling tool, 34-petal structure, 35-pressure maintaining cylinder, 36-inflation valve and 37-high pressure pipe.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the present invention comprises a handle 1, a power head 12, a reduction gearbox 2, a drilling tool abandoning device, a drilling tool 33, a pressure compensator and a core pressure maintaining device. A water supply joint 10 and a power head 12 are installed on a top plate of the reduction gearbox 2, the power head 12 is connected with a driving gear shaft 22 (an input shaft of the reduction gearbox 2) through a power head output shaft 13, and the driving gear shaft 22 is installed in the reduction gearbox 2 through a bearing 5-2; a driving gear is arranged on the driving gear shaft 22; a main shaft 7 (an output shaft of the reduction gearbox 2) is arranged in the reduction gearbox 2 through a bearing 5-1, the main shaft 7 is parallel to a driving gear shaft 22, a driven gear 3 is arranged on the main shaft 7, and the driving gear is meshed with the driven gear 3; the main shaft 7 is provided with a central hole which is communicated with a water inlet hole of the water supply joint 10.
The drill discarding device comprises a spindle 7, a spring 4-1, a water feed pressure plate 27, a fixing ring 25 and a disposable connecting shaft 31. The bottom of the central hole of the main shaft 7 is in a bell mouth shape, a hanging clamping groove 71 is arranged on the side wall of the central hole of the main shaft 7, as shown in fig. 3, a groove 72 allowing the hanging clip 30 to enter is arranged below the hanging clamping groove 71 on the side wall of the central hole of the main shaft 7, and the groove 72 is communicated with the hanging clamping groove 71. The middle part of the central hole of the main shaft 7 is provided with a spring fixing flange and threads, the threads are arranged below the spring fixing flange, and a fixing ring 25 is in threaded connection with the threads. The upper end of the pressure rod of the water supply pressure plate 27 passes through the central hole of the fixed ring 25 to be connected with the spring 4-1. The upper end of the disposable connecting shaft 32 is sleeved with a sealing ring 11-3 and two suspension clips 30, the suspension clips 30 are positioned below the sealing ring 11-3, the upper end of the disposable connecting shaft 32 is inserted into the lower end of the central hole of the main shaft 7, and the suspension clips 30 enter the suspension clamping grooves 71 through the grooves 72, so that the disposable connecting shaft 32 is connected with the main shaft 7. The bottom of the fixing ring 25 and the top of the disposable connecting shaft 32 are correspondingly provided with 4-10 limiting blocks 26, as shown in fig. 2, the number of the limiting blocks 26 at the top of the disposable connecting shaft 32 is 6, and the bottom of the fixing ring 25 is matched with the limiting blocks 26 at the top of the disposable connecting shaft 32, so that the spindle 7 drives the disposable connecting shaft 32 to rotate. The lower end of the disposable connecting shaft 32 is connected with a drilling tool 33, and the core pressure maintaining device can be connected with the drilling tool 33 to perform pressure compensation on the drilling tool 33. The lower end of the disposable connecting shaft 32 is provided with a thread connected with a drilling tool 33, and the lower part of the disposable connecting shaft 32 is sleeved with a rotating speed sensor 28. A pressure valve is provided in the central bore of the disposable coupling shaft 32.
The pressure valve comprises a valve core 31, a water supply pressure rod 29, a spring 4-2 and a fixing ring 25; the disposable connecting shaft 32 is provided with a valve core hole and a pressure rod hole, the valve core hole and the pressure rod hole are arranged along the axial direction of the disposable connecting shaft 32 and are communicated with the pressure rod hole, a valve core 31 and a fixing ring 25 are arranged in the valve core hole, a spring 4-2 is arranged between the valve core 31 and the fixing ring 25, the pressure rod hole can be blocked by the valve core 31, the valve core 31 is connected with a water supply pressure rod 29, the water supply pressure rod 29 extends out of the pressure rod hole, and the upper end of the water supply pressure rod 29 can be contacted with the water supply pressure plate 27. The pressure compensator I is fixedly arranged on the side wall of the reduction gearbox; the pressure compensator I comprises a pressure compensation cylinder 17-1, an end cover 21-1, a piston 18-1 and a spring 4; the lower end of the pressure compensation cylinder 17-1 is provided with an opening, the opening at the lower end of the pressure compensation cylinder 17-1 is provided with an end cover 21-1, and the side wall at the lower end of the pressure compensation cylinder 17-1 is provided with a seawater inlet 19; a piston 18-1 is arranged in the pressure compensation cylinder 17-1, and the piston 18-1 is connected with an end cover 21-1 through a spring 4-3; the top of the pressure compensation cylinder 17-1 is provided with two oil pipe joints, one oil pipe joint is connected with an oil inlet pipe, the oil inlet pipe is provided with a check valve 15, the other oil pipe joint is connected with one end of an oil outlet pipe 16, the top plate of the reduction gearbox 2 is provided with an oil pipe joint, and the other end of the oil outlet pipe 16 is connected with the oil pipe joint on the reduction gearbox 2.
The core pressurizer comprises a pressure maintaining cylinder 35 and a pressure compensator II, the central hole part of the pressure maintaining cylinder 35 is in a step shape, and a sealing ring 11-1 pressure maintaining cylinder 35 is installed at the transition surface of the step and used for being sleeved on the outer side of the drilling tool 33. The pressure compensator II comprises a pressure compensation cylinder 17-2, a piston 18-2, a compensator end cover 21-2 and an inflation valve 36; one end of the pressure compensation cylinder 17-2 is opened, and the other end is communicated with the bottom of the central hole of the pressure maintaining cylinder 35 through a high-pressure pipe 37. The compensator end cover 21-2 is fixed at an opening of the pressure compensation cylinder 17-2, the inflation valve 36 is communicated with the pressure compensation cylinder 17-2 through a high-pressure pipe 37, and the piston 18-2 is arranged in the pressure compensation cylinder 17-2. When the invention is used, the operation process is as follows:
1. as shown in fig. 3 and 4, before launching, the upper end of the disposable connecting shaft 32 is inserted into the lower end of the central hole of the main shaft 7, and the two suspension clips 30 enter the suspension clamping grooves 71 through the grooves 72; as shown in fig. 5, the spindle 7 is rotated again to clamp the disposable connection shaft 32 of the connection drill 33 in the hanging slot 71 and push the water pressure plate 27 to compress the spring 4-1. Under the action of the spring 4-1, the water supply pressure plate 27 pushes the water supply pressure rod 29 to move downwards, and the pressure valve is opened. Through the cooperation of the spring 4-1, the hanging clip 30, the hanging clamping groove 71 and the disposable connecting shaft 32 with the main shaft 7, not only can the stable connection of the drilling tool 33 be realized, but also a flushing channel between the inner cavity of the drilling tool 33, the water inlet pipe 8, the water inlet interface 9, the water supply connector 10, the water permeable hole of the fixing ring 25, the pressure valve and the like is opened. Meanwhile, the cavity between the top of the pressure compensation cylinder 17-1 and the piston 18-1 is pre-filled with oil through the one-way valve 15, and the cavity between the top of the pressure compensation cylinder 17-2 and the piston 18-2 is pre-filled with nitrogen with the pressure of 0.3 time of the water depth of the seabed sampling point through the charging valve 36.
2. In the process of submerging the submersible to a designated seabed sampling point from the sea surface along with the submersible, seawater enters the pressure compensator I through the seawater inlet 19 under the action of external pressure, the piston 18 is pushed to move upwards, oil in the pressure compensator I enters the reduction gearbox 2, and the pressure balance between the reduction gearbox 2 and the seawater is ensured.
3. As shown in fig. 6 and 7, after the submersible reaches the designated seabed sampling point, the mechanical hand-held seabed pressure-holding coring micro drill of the invention is firstly aligned to the designated sampling point by operating the mechanical hand on the submersible to grip the handle 1. The drive head 12 then rotates the spindle 7, which in turn rotates the disposable spindle 32 and the drill 33 therebelow. The disposable connecting shaft 32 is connected with the main shaft 7 through the suspension clamp 30 and the suspension clamping groove 71 to transmit torque and feeding force. As shown in fig. 8, as the whole of the mechanical hand-held type subsea dwelling coring micro-drill is moved down, the drilling tool 33 cuts the core deep into the subsea strata. At the same time, washing water is supplied to the inside of the drilling tool 33 through the water inlet pipe 8.
As shown in fig. 11, if a drill bit is stuck during the drilling and coring process, the hanging clip 30 is gradually separated from the hanging clip groove 71 by reversing the rotation direction of the power head 12 until the drill bit cannot be reversed, the connecting shaft and the spindle 7 reach the positions shown in fig. 4, and the drilling machine is axially lifted, so that the disposable connecting shaft 32 can be separated from the spindle 7, and the disposable connecting shaft 32 and the drilling tool 33 can be discarded together.
4. As shown in fig. 9, after the core drilling process is finished, the submersible operates the mechanical hand-held drill to move the mechanical hand-held pressure-maintaining coring micro-drilling machine up integrally and bring out the obtained core, thereby completing the core sampling process. After the core is taken out, the drilling tool 33 is slowly screwed into the pressure-maintaining cylinder 35, the internal space of the pressure-maintaining cylinder 35 is gradually compressed, and the piston 18 of the pressure compensator II is pushed to move upwards. As shown in fig. 10, the pressure maintaining cylinder 35 is stably connected to the disposable connection shaft 32, the steering of the mechanical hand-held seafloor pressure maintaining coring miniature drilling machine is reversed, and the mechanical hand-held seafloor pressure maintaining coring miniature drilling machine is lifted up by the mechanical hand, so that the main shaft 7 is separated from the disposable connection shaft 32, and the whole coring process is completed.

Claims (9)

1. The utility model provides a miniature rig of coring is pressurize in machinery hand-held type seabed, characterized by: comprises a power head, a reduction gearbox, a drilling tool abandoning device, a drilling tool and a core pressure maintaining device; a water supply joint and a power head are arranged on a top plate of the reduction box, and an output shaft of the power head is connected with an input shaft of the reduction box; the output shaft of the reduction gearbox is provided with a central hole which is communicated with a water inlet hole of the water supply joint;
the drilling tool abandoning device comprises a spring, a water supply pressure plate, a fixing ring and a abandonable connecting shaft; the bottom of the central hole of the output shaft is in a bell mouth shape, and a hanging clamping groove is arranged on the side wall of the central hole of the output shaft; the middle part of the central hole of the output shaft is provided with a spring fixing flange and threads, the threads are arranged below the spring fixing flange, and a fixing ring is in threaded connection with the threads; the upper end of a pressure rod of the water supply pressure plate passes through a central hole of the fixing ring to be connected with the pressure plate, and a spring is arranged between the pressure plate and the spring fixing flange; the upper end of the disposable connecting shaft is sleeved with a sealing ring, the upper end of the disposable connecting shaft is inserted into the lower end of the central hole of the output shaft, and is matched with a suspension clamping groove on the output shaft through a suspension clamp; the bottom of the fixing ring is correspondingly provided with a plurality of limiting blocks with the top of the disposable connecting shaft, and the bottom of the fixing ring is matched with the limiting blocks at the top of the disposable connecting shaft to realize that the output shaft drives the disposable connecting shaft to rotate; the lower end of the disposable connecting shaft is connected with the drilling tool, and the rock core pressure maintaining device can be connected with the drilling tool to compensate the pressure of the drilling tool.
2. The mechanical hand-held seafloor pressure maintaining coring micro-drilling machine as set forth in claim 1, wherein: a pressure valve is arranged in a center hole of the disposable connecting shaft, and a rotating speed sensor is arranged on the side wall of the lower portion of the disposable connecting shaft.
3. The mechanical hand-held seafloor pressure maintaining coring micro-drilling machine as set forth in claim 1, wherein: the pressure compensator I is fixedly arranged on the side wall of the reduction gearbox; the pressure compensator I comprises a pressure compensation cylinder, an end cover, a piston and a spring; the lower end of the pressure compensation cylinder is provided with an opening, the opening at the lower end of the pressure compensation cylinder is provided with an end cover, and the side wall at the lower end of the pressure compensation cylinder is provided with a seawater inlet; a piston is arranged in the pressure compensation cylinder, and the piston is connected with the end cover through a spring; the top of the pressure compensation cylinder is provided with two oil pipe joints, one oil pipe joint is connected with an oil inlet pipe, the oil inlet pipe is provided with a one-way valve, the other oil pipe joint is connected with one end of an oil outlet pipe, the top plate of the reduction gearbox is provided with an oil pipe joint, and the other end of the oil outlet pipe is connected with the oil pipe joint on the reduction gearbox.
4. The mechanical hand-held seafloor pressure maintaining coring micro-drilling machine as set forth in claim 1, wherein: the core pressure maintaining device comprises a pressure maintaining cylinder and a pressure compensator II, wherein a central hole of the pressure maintaining cylinder is in a step shape, a sealing ring is arranged at the transition surface of the step, and the pressure maintaining cylinder is sleeved on the outer side of the drilling tool; the pressure compensator II comprises a pressure compensation cylinder, a piston, a compensator end cover and an inflation valve; one end of the pressure compensation cylinder is opened, and the other end of the pressure compensation cylinder is communicated with the bottom of the central hole of the pressure maintaining cylinder through a high-pressure pipe; the compensator end cover is fixed at the opening of the pressure compensation cylinder, the inflation valve is communicated with the pressure compensation cylinder through a high-pressure pipe, and the piston is arranged in the pressure compensation cylinder.
5. The mechanical hand-held seafloor pressure maintaining coring micro-drilling machine as set forth in claim 1, wherein: the pressure valve comprises a valve core, a water supply pressure rod, a spring and a fixing ring; the disposable connecting shaft is provided with a valve core hole and a pressure rod hole, the valve core hole and the pressure rod hole are arranged along the axial direction of the disposable connecting shaft, the valve core hole is communicated with the pressure rod hole, a valve core and a fixing ring are arranged in the valve core hole, a spring is arranged between the valve core and the fixing ring, the pressure rod hole can be blocked by the valve core, the valve core is connected with a water supply pressure rod, and the water supply pressure rod extends out of the pressure rod hole.
6. The mechanical hand-held seafloor pressure maintaining coring micro-drilling machine as set forth in claim 1, wherein: and a support column is arranged on the top surface of the end cover of the pressure compensator I, and a spring is sleeved on the support column.
7. The mechanical hand-held seafloor pressure maintaining coring micro-drilling machine as set forth in claim 1, wherein: the handle is fixedly arranged on the side wall of the reduction gearbox.
8. The mechanical hand-held seafloor pressure maintaining coring micro-drilling machine as set forth in claim 1, wherein: the water inlet at the top of the water supply joint is provided with a water inlet interface which is used for connecting a water inlet pipe.
9. The mechanical hand-held seafloor pressure maintaining coring micro-drilling machine as set forth in claim 1, wherein: the number of the limiting blocks symmetrically arranged at the bottom of the fixing ring and at the top of the disposable connecting shaft is 4-10.
CN202010098496.6A 2020-02-18 2020-02-18 Mechanical hand-held type seabed pressure-maintaining coring miniature drilling machine Pending CN111155930A (en)

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