CN206174904U - Gas hydrate pressurize wire line coring drilling tool suitable for seabed rig - Google Patents

Gas hydrate pressurize wire line coring drilling tool suitable for seabed rig Download PDF

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Publication number
CN206174904U
CN206174904U CN201621231628.3U CN201621231628U CN206174904U CN 206174904 U CN206174904 U CN 206174904U CN 201621231628 U CN201621231628 U CN 201621231628U CN 206174904 U CN206174904 U CN 206174904U
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CN
China
Prior art keywords
tube
pressurize
bullet
valve
clamping stent
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Withdrawn - After Issue
Application number
CN201621231628.3U
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Chinese (zh)
Inventor
万步炎
黄筱军
王佳亮
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Hunan University of Science and Technology
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Hunan University of Science and Technology
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Priority to CN201621231628.3U priority Critical patent/CN206174904U/en
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Abstract

The utility model discloses a gas hydrate pressurize wire line coring drilling tool suitable for seabed rig, including outer tube assembly and inner tube assembly, the outer tube assembly includes outer tube and seating ring, the inner tube assembly is including dragging for spearhead and lower end seal lid, dragging for spearhead and being connected with bullet card positioning mechanism, bullet card positioning mechanism and bullet board support are connected, and pressure -keeping valve mechanism and safety relief valve can communicate the clearance that plays between board support hole and bullet board support and the outer tube, the ring that hangs that plays on the board support lateral wall is arranged in on the seating ring in the outer tube, it passes through single action mechanism and inner tube articulate to play board support, interior coupling and interior union coupling, the rock core bushing pipe sets up in the inner tube, play the hole intercommunication of board support, single action mechanism, interior coupling and rock core bushing pipe, the sea is dragged for and is established in the jump ring seat of inner tube lower extreme, the jump ring seat is connected with lower end seal lid. The utility model discloses simple structure, reliability height, can realize sealing the guarantor compacting of sample thief, satisfy the strict restriction use operating mode of the seabed rig of weight under water.

Description

A kind of gas hydrates pressurize cord coring drill suitable for seabed rig
Technical field
This utility model is related to a kind of gas hydrates cord coring drill, bores suitable for seabed more particularly, to a kind of The gas hydrates pressurize cord coring drill of machine.
Background technology
Deep-sea gas hydrates develop and use a new focus for having become countries in the world Future strategy.Bore It is the most straightforward approach for obtaining gas hydrates sample that spy is cored.As gas hydrates are formed and there is cryogenic high pressure Under environment, mainly carry out the sampling work of gas hydrates both at home and abroad using gastight sampling technology.Existing pressurize at present takes Sample drilling tool is primarily directed to sea drilling ship sampled form, coordinates the rig on lash ship deck to use.Which is simultaneously unsatisfactory for tight Lattice limit the applying working condition of the seabed rig of weight under water, have that bore diameter is big, core sample diameter is little, drilling tool quality big, The problems such as drilling tool structure is complicated.
Utility model content
In order to solve above-mentioned technical problem, this utility model provides a kind of simple structure, reliability height, and can be to being taken The gas hydrates pressurize cord coring drill suitable for seabed rig of the pressurize sealing of sample.
The technical solution adopted in the utility model is:Including outer pipe assembly and inner tube assembly, described outer pipe assembly includes Bullet card shelves head, bullet card room, seat ring, outer tube, reamer and drill bit;Described inner tube assembly include dragging for spearhead, bullet card detent mechanism, Pressurize valve system, safety relief valve, bullet clamping stent, hanging ring, single action mechanism, inner pipe joint, backwater ball valve, inner tube, rock core lining Pipe, clip spring seat, bottom closure and sea are dragged for or jump ring;Drag for spearhead to be connected with bullet card detent mechanism, bullet card detent mechanism and bullet Clamping stent connects, and pressurize valve system and safety relief valve are arranged on bullet clamping stent, and pressurize valve system and safety relief valve can Connection plays clamping stent endoporus and plays the gap between clamping stent and outer tube;Play clamping stent side wall and be provided with hanging ring;Hanging ring is put On the seat ring in outer tube;Play clamping stent to be connected with single action mechanism;Single action mechanism is connected with inner pipe joint;The lower end of inner pipe joint It is connected with the upper end of inner tube, rock core bushing pipe is arranged in inner tube;Play clamping stent, single action mechanism, inner pipe joint and rock core bushing pipe Endoporus is connected, and backwater ball valve is provided with the endoporus of inner pipe joint;The lower end of inner tube is connected with clip spring seat, and sea is dragged for or jump ring is arranged on In clip spring seat;Clip spring seat is connected with bottom closure.
The above-mentioned gas hydrates pressurize cord coring drill suitable for seabed rig, described inner tube upper end Pressurize valve system includes check valve and shift fork;Described check valve is arranged in the unidirectional valve opening played on clamping stent, in the middle part of shift fork It is hinged with clamping stent is played, one end of shift fork is provided with top pawl, and top pawl is contacted with inner elements of check valve, the other end and the locking position of bullet of shift fork The receipts card cylinder inwall contact of mechanism;Shift fork can open and close check valve.
The above-mentioned gas hydrates pressurize cord coring drill suitable for seabed rig, described shift fork it is another End is provided with shift fork roller, and the face of cylinder of shift fork roller is contacted with the receipts card cylinder inwall in bullet card detent mechanism.
The above-mentioned gas hydrates pressurize cord coring drill suitable for seabed rig, the outside of the clip spring seat Wall is provided with screw thread, and bottom is provided with sealing cylinder;The medial wall of said inner tube bottom closure is provided with female thread and sealing Groove, is provided with sealing ring in seal groove;Inner tube bottom closure can be threadedly coupled with clip spring seat.
The above-mentioned gas hydrates pressurize cord coring drill suitable for seabed rig, described pressurize valve system Also include guiding valve, described playing is provided with multiple drainage holes in the middle part of clamping stent, play the top of drainage hole on the wall of clamping stent side Be respectively arranged below with seal groove, guiding valve endoporus coordinates with clamping stent is played, and can slide on clamping stent is played.
The above-mentioned gas hydrates pressurize cord coring drill suitable for seabed rig, described single action mechanism bag Mandrel, thrust ball bearing, sleeve pipe end cap and locking nut are included, the upper end of mandrel is connected with clamping stent is played, described sleeve pipe end cap Sealing ring is provided between the upper end of inner pipe joint, sleeve pipe end cap and inner pipe joint;Mandrel passes through sleeve pipe end cap, mandrel Lower end is provided with locking nut, is provided with thrust ball bearing between the lower surface of sleeve pipe end cap and locking nut;Mandrel is provided with flange, It is supported on sleeve end lid by thrust ball bearing;Sealing is respectively equipped between described mandrel and bullet clamping stent and sleeve pipe end cap Circle;Sealing ring is provided between described inner pipe joint and inner tube;Sealing ring is provided between described inner tube and clip spring seat.
The above-mentioned gas hydrates pressurize cord coring drill suitable for seabed rig, described single action mechanism is also Including buffer spring, buffer spring be arranged on locking nut and sleeve pipe end cap lower surface at thrust ball bearing between.
Compared with prior art, the beneficial effects of the utility model are:
This utility model is provided with pressurize valve system and bottom closure, when normally creeping into, pressure retaining valve mechanism connection bullet card Gap between support endoporus and bullet clamping stent and outer tube, after drilling terminates, pressurize valve system is closed, and realizes inner tube assembly upper end Sealing;Closure clip spring seat in bottom of the present utility model connection, realizes the sealing of inner tube assembly lower end, so realize it is right The pressurize sealing of samples taken, reaches the purpose that larger diameter pressurize core sample is obtained on the premise of compared with bradawl bore dia; This utility model both can be cored using forced suction, can be improve to bored ground with being cored using rotary drilling mode again The adaptability of layer;This utility model also has the advantages that simple structure, reliability are high.
Description of the drawings
Structural representations of the Fig. 1 for 1 working condition of this utility model embodiment.
Fig. 2 is the structural representation of 1 packing state of this utility model embodiment.
Structural representations of the Fig. 3 for 2 working condition of this utility model embodiment.
Fig. 4 is the structural representation of 2 packing state of this utility model embodiment.
Fig. 5 is the structural representation of 3 working condition of this utility model embodiment.
Fig. 6 is the structural representation of 3 packing state of this utility model embodiment.
In figure:1- drags for spearhead;2- adapter couplings;3- receives card cylinder;4- stage clips;5- bullet clamps;6- bullet cards room;7- shift forks;71- Shift fork roller;72- straight pins;8- check valves;9- safety relief valves;10- bullet clamping stents;11- hanging rings;12- seat rings;13- cores Axle;131-O type sealing rings;132- buffer springs;14- thrust ball bearings;15- sleeve pipe end caps;151- sealing rings;152- is sealed Circle;16- locking nuts;17- inner pipe joints;171- sealing rings;18- screen clothes;19- backwater ball valves;20- outer tubes;21- inner tubes;22- Rock core bushing pipe;23- reamers;24- clip spring seats;241- sealing rings;25- is dragged in sea;26- drill bits;27- bottoms closure;271- Seal groove;272- sealing rings;29- jump rings.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment is further described to this utility model.
Embodiment 1
As shown in figure 1, this utility model includes outer pipe assembly and inner tube assembly, inner tube assembly is placed in outer pipe assembly.Institute Stating outer pipe assembly includes bullet card shelves 2, bullet card room 6, seat ring 12, outer tube 20, reamer 23 and drill bit 26;Bullet card shelves 2, bullet card Room 6, outer tube 20, reamer 23 and drill bit 26 are sequentially connected;Seat ring 12 is arranged on the inwall of outer tube 20.
Described inner tube assembly includes dragging for spearhead 1, bullet card detent mechanism, plays clamping stent 10, pressurize valve system, safety relief Valve 9, hanging ring 11, single action mechanism, inner pipe joint 17, backwater ball valve 19, inner tube 21, rock core bushing pipe 22, sea drag for 25, clip spring seat 24 With inner tube bottom closure 27;Described bullet card detent mechanism includes receiving card cylinder 3, stage clip 4 and plays clamp 5, described pressurize Valve system includes check valve 8 and shift fork 7;Described check valve 8 is arranged in the unidirectional valve opening played on clamping stent 10, unidirectional valve opening Connection plays the endoporus of clamping stent 10 and plays the gap between clamping stent 10 and outer tube 20.Pass through straight pin 72 and bullet in the middle part of shift fork 7 Clamping stent 10 is hinged, and one end of shift fork 7 is provided with top pawl, and top pawl is contacted with the valve element of check valve 8, and the other end of shift fork 7 is provided with to be dialled Fork roller 71, the face of cylinder of shift fork roller 71 are contacted with the inwall for receiving card cylinder 3 in bullet card detent mechanism;Described 7 energy of shift fork The linkage of enough and bullet card detent mechanism, realization make check valve 8 all the time in drilling process in opening, and drilling is unidirectional after terminating Valve 8 is closed.
Described single action mechanism is by mandrel 13, buffer spring 131, thrust ball bearing 14, sleeve pipe end cap 15, locking nut 16 Composition, the upper end of mandrel 13 are connected with clamping stent 10 is played, and described sleeve pipe end cap 15 is arranged on the upper end of inner pipe joint, sleeve end Sealing ring 151 is provided between lid 15 and inner pipe joint 17.Mandrel 13 passes through sleeve pipe end cap 15, and the lower end of mandrel 13 is provided with locking screw Female 16, locking nut 16 and sleeve pipe end cap are provided with buffer spring 131 between 15 lower surface, the upper end of sleeve pipe end cap 15 on mandrel 13 A thrust ball bearing 14 is respectively equipped with face, lower surface, the thrust ball bearing 14 on mandrel 13 at 15 lower surface of sleeve pipe end cap Buffer spring 131 is provided between locking nut 16.It is respectively equipped between mandrel 13 and bullet clamping stent 10 and sleeve pipe end cap 15 close Seal 131 and sealing ring 152.
The lower end for dragging for spearhead 1 is connected with bullet card detent mechanism, and the lower end of bullet card detent mechanism is connected with clamping stent 10 is played;Protect Valve mechanism and safety relief valve 9 are arranged in bullet clamping stent 10, can be connected and be played the endoporus of clamping stent 10 and play clamping stent 10 And the gap between outer tube 20.The bottom for playing the side wall of clamping stent 10 is provided with hanging ring 11, and hanging ring 11 is placed on the inside of outer tube 20 On seat ring 12 on plate.The lower end for playing clamping stent 10 is connected with the upper end of single action mechanism, the lower end of single action mechanism and inner pipe joint 17 upper end connection, plays clamping stent 10, single action mechanism and connects with the endoporus of inner pipe joint 17, be provided with the endoporus of inner pipe joint 17 Backwater ball valve 19;The upper end of backwater ball valve 19 is provided with screen cloth 18.The lower end of inner pipe joint 17 is connected with the upper end of inner tube 21, rock core Bushing pipe 22 is arranged in inner tube 21;Sealing ring 171 is provided between inner pipe joint 17 and inner tube 21;The lower end of inner tube 21 and clip spring seat 24 upper ends connect, and sea is dragged for 25 and is arranged in clip spring seat 24;Sealing ring 241 is provided between inner tube 21 and clip spring seat 24.
Its outer surface top of described clip spring seat 24 is provided with screw thread, and bottom is provided with sealing cylinder, in bottom closure 27 Female thread and interior sealing ring recess 271 are provided with, in interior sealing ring recess 271, sealing ring 272 is provided with.In on the rig body of seabed The achievable bottom closure 27 of pipe bottom closure unloading device is threadedly coupled with clip spring seat 24, coordinates bottom sealing Sealing ring 272 in lid 27, realizes the sealing to inner tube underpart opening.
Specifically used method of the present utility model is as follows:Before drilling starts, mechanical hand crawl inner tube assembly moves to rig sheet At 27 unloading device of bottom closure on body, bottom closure 27 is separated with inner tube assembly by unloading device, with Bottom closure 27 after inner tube assembly is separated is temporarily stored in unloading device, while mechanical hand will remove bottom closure 27 Inner tube assembly move to aperture, using on rig rope winch coordinate salvaging mechanism inner tube assembly is transferred into total to bottom hole outer tube Precalculated position in, carries out drilling operation.
It is normal when creeping into, in inner tube assembly bullet card detent mechanism play clamp 5 by outer pipe assembly be hit by a bullet card room 6 radial direction about Beam, makes 3 position of receipts card cylinder move vertically, receive card 3 pairs of shift forks 7 of cylinder in 71 position-limiting actions of shift fork roller, force shift fork 7 around Straight pin 72 rotates, and triggers 7 action of shift fork, the valve element of check valve 8 is backed down, it is ensured that check valve 8 begins in drilling process Opening is in eventually, forms drainage channel.This utility model both can aspirate pattern of coring using forced, coordinate rig body On pumping piston cylinder, make piston type negative pressure is formed in inner tube assembly during coring, raising is cored rate.Can also adopt back Turn coring pattern, the annular gap between flushing liquor Jing inner tubes 21 and outer tube 20, the mouth of a river for flowing through drill bit 26 reach bottom hole, Drill bit 26 is cooled down, and aperture is returned on annular gap of the portable hole bed rock powder along between drilling rod and hole wall.
After drilling terminates, inner tube assembly is quickly carried to aperture, the radial direction of the 6 pairs of bullet clamps 5 in bullet card room using salvaging mechanism Constraint release, receives 3 position of card cylinder and moves down vertically, receive the spacing releasing of card 3 pairs of shift fork rollers 71 of cylinder, and shift fork 7 resets, check valve 8 close, and realize the sealing of inner tube assembly upper end.Inner tube assembly is moved to the bottom sealing on rig body by mechanical hand At 27 unloading of lid, unloading device will be temporarily stored in its internal bottom closure 27 and be connected with clip spring seat 24, coordinate bottom close Sealing ring 272 in capping 27, realizes the sealing to inner tube assembly lower end.So far, drilling tool inner tube assembly upper and lower end parts are in Sealing state, the gas hydrates sample of its storage inside are also at pressurize sealing state, as shown in Figure 2.Work as inner tube assembly In pressure be increased beyond after certain value because of temperature, safety relief valve 9 is automatically turned on, and inner tube assembly is shielded.
Embodiment 2
As shown in figure 3, its structure is similar to Example 1, its difference is:The structure of pressurize valve system is different, protects Valve mechanism includes guiding valve 28, plays 10 top of clamping stent and is provided with the multiple drainage holes 29 of radial equipartition, plays the side wall of clamping stent 10 Seal groove 301 and seal groove 302 are respectively equipped with above and below upper drainage hole 29;In seal groove 301 and seal groove 302 It is respectively equipped with sealing ring 303 and sealing ring 304;The endoporus of guiding valve 28 coordinates with clamping stent 10 is played, it is possible to playing clamping stent 10 Upper axial movement.During normal drilling, guiding valve 28 is in opening, and the water in drilling tool inner tube assembly can be along 10 top of bullet clamping stent Drainage hole 29 discharge;After drilling terminates, as shown in figure 4, quickly being carried inner tube assembly to aperture using salvaging mechanism, utilize Shifting fork mechanism on rig body, makes guiding valve 28 move down along card holder 30 is played, and guiding valve 28 is closed, and coordinates and plays card holder Sealing ring 303 and sealing ring 304 in 30 seal grooves 301 and seal groove 302, realizes the pressurize sealing of inner tube assembly upper end.
Embodiment 3
As shown in Figure 5,6, its structure is similar to Example 1, and its difference is:Described single action mechanism does not contain lock The buffer spring 131 between thrust ball bearing at tight 15 lower surface of nut 16 and sleeve pipe end cap, at 15 lower surface of sleeve pipe end cap Thrust ball bearing directly positioned on mandrel 13 by locking nut 16.The other end of the shift fork 7 of described pressurize valve system Shift fork roller 71 is not provided with, the other end of shift fork 7 is directly contacted with the inwall for receiving card cylinder 3.25 are dragged for by jump ring in the sea of inner tube lower end 29 substitute.

Claims (7)

1. a kind of gas hydrates pressurize cord coring drill suitable for seabed rig, including outer pipe assembly and inner tube are total Into described outer pipe assembly includes bullet card shelves head, bullet card room, seat ring, outer tube, reamer and drill bit;Described inner tube assembly bag Include and drag for spearhead, bullet card detent mechanism, play clamping stent, hanging ring, single action mechanism, inner pipe joint, backwater ball valve, inner tube, rock core lining Pipe, clip spring seat and sea are dragged for or jump ring;It is characterized in that:Described inner tube assembly also include pressurize valve system, safety relief valve and under End seal lid;Drag for spearhead to be connected with bullet card detent mechanism, bullet card detent mechanism is connected with clamping stent is played, pressurize valve system and peace Full relief valve is arranged on bullet clamping stent, and pressurize valve system and safety relief valve can connect bullet clamping stent endoporus and play clamping stent Gap and outer tube between;Play clamping stent side wall and be provided with hanging ring;On the seat ring that hanging ring is placed in outer tube;Play clamping stent with Single action mechanism connects;Single action mechanism is connected with inner pipe joint;The lower end of inner pipe joint is connected with the upper end of inner tube, and rock core bushing pipe sets Put in inner tube;Bullet clamping stent, single action mechanism, inner pipe joint are connected with the endoporus of rock core bushing pipe, are set in the endoporus of inner pipe joint There is backwater ball valve;The lower end of inner tube is connected with clip spring seat, and sea is dragged for or jump ring is arranged in clip spring seat;Clip spring seat is sealed with bottom Lid connection.
2. the gas hydrates pressurize cord coring drill suitable for seabed rig according to claim 1, its feature It is:The pressurize valve system of described inner tube upper end includes check valve and shift fork;Described check valve is arranged on bullet clamping stent In unidirectional valve opening, it is hinged with bullet clamping stent in the middle part of shift fork, one end of shift fork is provided with top pawl, and top pawl is contacted with inner elements of check valve, dialled The other end of fork is contacted with the receipts card cylinder inwall of bullet card detent mechanism;Shift fork can open and close check valve.
3. the gas hydrates pressurize cord coring drill suitable for seabed rig according to claim 2, its feature It is:The other end of described shift fork is provided with shift fork roller, in the receipts card cylinder in the face of cylinder of shift fork roller and bullet card detent mechanism Wall is contacted.
4. the gas hydrates pressurize cord coring drill suitable for seabed rig according to claim 1, its feature It is:The lateral wall of the clip spring seat is provided with screw thread, and bottom is provided with sealing cylinder;The medial wall of said inner tube bottom closure Female thread and seal groove are provided with, sealing ring in seal groove, is provided with;Inner tube bottom closure can carry out screw thread with clip spring seat Connection.
5. the gas hydrates pressurize cord coring drill suitable for seabed rig according to claim 1, its feature It is:Described pressurize valve system also includes guiding valve, and described playing is provided with multiple drainage holes, plays clamping stent side in the middle part of clamping stent Seal groove is respectively equipped with wall above and below drainage hole, guiding valve endoporus coordinates with clamping stent is played, and can be in bullet card Slide on frame.
6. the gas hydrates pressurize cord coring drill suitable for seabed rig according to claim 1, its feature It is:Described single action mechanism includes mandrel, thrust ball bearing, sleeve pipe end cap and locking nut, upper end and the bullet clamping stent of mandrel Connection, described sleeve pipe end cap are arranged on the upper end of inner pipe joint, are provided with sealing ring between sleeve pipe end cap and inner pipe joint;Mandrel Through sleeve pipe end cap, the lower end of mandrel is provided with locking nut, is provided with thrust ball between the lower surface of sleeve pipe end cap and locking nut Bearing;Mandrel is provided with flange, is supported on sleeve end lid by thrust ball bearing;Described mandrel and bullet clamping stent and sleeve pipe Sealing ring is respectively equipped between end cap;Sealing ring is provided between described inner pipe joint and inner tube;Described inner tube and clip spring seat Between be provided with sealing ring.
7. the gas hydrates pressurize cord coring drill suitable for seabed rig according to claim 6, its feature It is:Described single action mechanism also includes buffer spring, and buffer spring is arranged on pushing away at locking nut and sleeve pipe end cap lower surface Between power ball bearing.
CN201621231628.3U 2016-11-17 2016-11-17 Gas hydrate pressurize wire line coring drilling tool suitable for seabed rig Withdrawn - After Issue CN206174904U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621231628.3U CN206174904U (en) 2016-11-17 2016-11-17 Gas hydrate pressurize wire line coring drilling tool suitable for seabed rig

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621231628.3U CN206174904U (en) 2016-11-17 2016-11-17 Gas hydrate pressurize wire line coring drilling tool suitable for seabed rig

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CN206174904U true CN206174904U (en) 2017-05-17

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CN201621231628.3U Withdrawn - After Issue CN206174904U (en) 2016-11-17 2016-11-17 Gas hydrate pressurize wire line coring drilling tool suitable for seabed rig

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106351597A (en) * 2016-11-17 2017-01-25 湖南科技大学 Natural gas hydrate pressure retaining rope coring drill applicable to submarine drill
WO2020034353A1 (en) * 2018-08-13 2020-02-20 四川大学 Sealing structure with explosion-proof function for upper part of pressure maintaining barrel
US10947800B2 (en) 2018-10-18 2021-03-16 Hunan University Of Science And Technology Pressure-retaining cap screwing and unscrewing device for marine natural gas hydrate pressure-retaining rock-core barrel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106351597A (en) * 2016-11-17 2017-01-25 湖南科技大学 Natural gas hydrate pressure retaining rope coring drill applicable to submarine drill
WO2020034353A1 (en) * 2018-08-13 2020-02-20 四川大学 Sealing structure with explosion-proof function for upper part of pressure maintaining barrel
US10947800B2 (en) 2018-10-18 2021-03-16 Hunan University Of Science And Technology Pressure-retaining cap screwing and unscrewing device for marine natural gas hydrate pressure-retaining rock-core barrel

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