CN209653996U - Loosely crisply layer evaporates direct-cooling type core drill in seabed - Google Patents

Abstract

Loosely crisply layer evaporates direct-cooling type core drill in the utility model seabed, belong to seabed core drill technical field, the drilling tool mainly includes top connection, water outlet, outer tube, inner pipe joint, pore, embedded capillary, evaporation apertures, evaporation cavity, evaporation cavity pedestal, reamer, drill bit and top connection drilling fluid runner, drill bit and evaporation cavity pedestal lower gap cooperate, rock core can smoothly enter into basket, basket is full of to rock core, the refrigerant liquid of cooled compression is expanded by volume after pore and embedded Capillary Flow to evaporation cavity, mutually become gas and absorbs a large amount of heat, basket and rock core freeze together, then refrigerant gas is back to the compressor outside drilling tool by evaporation apertures, it is recycled after cooling compression again, brill removal of core is mentioned again after rock core is together with basket fully charge.To improve seabed loosely crisply layer core recovery percentage.

Description

Loosely crisply layer evaporates direct-cooling type core drill in seabed

Technical field

The utility model belongs to seabed core drill technical field, in particular to loosely crisply layer evaporation is straight in a kind of seabed Cold type core drill.

Background technique

Deep seafloor has a large amount of mineral resources, and living resources, it is deficient that exploration seabed secret may advantageously facilitate solution resource Weary problem, or related science man studies paleo-ocean environments and Paleoclimatic Evolution history provides the firsthand information.

It is the important key link for exploring seabed secret that sea bottom core, which is taken, these deep-sea samples can be scientist to deep-sea The great Problems of Scientific Research such as resource, abyssopelagic organism, deep-sea Geological Evolution provides key message, at present in seabed coring process In, it is commonly encountered that loose frangible stratum core recovery percentage is low, rock core is imperfect, rock core falls off the problems such as serious.

Sea bottom core taking rate is low at present, the caducous main cause of rock core is as follows: formation is loose and broken formation, There is step at circlip inside traditional single rotary double core barrel, the easy blocking of rock core is at step, once blocking occur easily causes rock core Abrasion, and be unfavorable for rock core and enter inner tube, also easily there is down-hole accident.Traditional single rotary double core barrel is to lean on when extracting rock core Then circlip pinch off rock core extracts rock core.And for loose and broken formation, circlip can not play its effect, the rock when extracting rock core The heart, which falls off, causes the problems such as core sampler is imperfect, taking rate is low.

Utility model content

The purpose of this utility model is that being asked for current sea bottom core taking rate is low, rock core is imperfect, rock core falls off etc. It is loose to provide a kind of novel reliable seabed for solving the problems such as core recovery percentage is low, rock core is imperfect, rock core falls off for topic Evaporate direct-cooling type core drill in frangible stratum.

In order to achieve the above objectives, the utility model adopts the following technical solutions: seabed loosely crisply layer evaporation it is direct-cooled Formula core drill characterized by comprising top connection, the first pore, the first top connection pore annular groove, the second capillary Hole, alloy bar, the first sealing ring, thrust bearing, the first tapered roller bearing, the second tapered roller bearing, the second sealing ring, Two top connection pore annular grooves, third pore, water outlet, pore block column, check valve, the 4th pore, pore Half slot, embedded capillary, third sealing ring, the first evaporation apertures, the first top connection evaporation apertures annular groove, the second evaporation apertures, Bearing top connection, outer tube, bearing spider, bearing sheath, nut, the second top connection evaporation apertures annular groove, third evaporation apertures, evaporation Hole blocks column, inner pipe joint, the 4th evaporation apertures, evaporation apertures half slot, gasket, the 5th evaporation apertures, thermal insulation layer, evaporation cavity, steaming Bottom of chamber seat, evaporation cavity casing, reamer, drill bit and top connection drilling fluid runner are sent out,

The top connection setting is above outer tube and coaxial, and top connection is connect with external pipe thread；It is connect on described first Capillus pore annular groove and the first top connection evaporation apertures annular groove are provided on top connection outer wall, the first top connection pore annular Slot and the first top connection evaporation apertures annular groove are circumferentially arranged along top connection；In on the first top connection pore annular groove and first Connector evaporation apertures annular groove is provided with third sealing ring in two sides up and down；First pore is located inside top connection and along its diameter To setting, one end of the first pore is connected to the first top connection pore annular groove, the other end of the first pore and second Pore connection；First evaporation apertures are located inside top connection and are radially arranged, one end of the first evaporation apertures and first The connection of top connection evaporation apertures annular groove, the other end of the first evaporation apertures are connected to the second evaporation apertures；Second pore and Two evaporation apertures are axially disposed within inside it along top connection, and are symmetrically arranged in top connection center line two sides, and at inner pipe joint Turn to corresponding second top connection pore annular groove, the connection of the second top connection evaporation apertures annular groove；It is connect on the bearing Head, inner pipe joint, top connection, the first sealing ring, thrust bearing and the first tapered roller bearing are coaxially arranged, bearing top connection with Inner pipe joint is threadedly coupled, while bearing top connection and top connection clearance fit；First sealing ring setting top connection with Between bearing top connection；The thrust bearing is fitted close between top connection and bearing top connection and with the two；Described One tapered roller bearing is mounted on bearing spider, at the same the first tapered roller bearing respectively with bearing top connection, inner pipe joint It is fitted close；Second tapered roller bearing is mounted on bearing spider, the second tapered roller bearing respectively with nut, inner tube Connector is fitted close；The bearing spider setting is in top connection and coaxial；The nut is threadedly coupled with top connection；Institute The upper end for stating inner pipe joint is threadedly coupled with bearing top connection, and the lower end of inner pipe joint is connect with Internal Pipe Thread, while inner tube connects Head and top connection clearance fit；The second top connection pore annular groove and the second top connection evaporation apertures annular groove are provided with On connector outer wall, the second top connection pore annular groove and the second top connection evaporation apertures annular groove are circumferentially arranged along top connection； The third pore and third evaporation apertures are located inside inner pipe joint and radially arrange along inner pipe joint, third pore one end It is connected to the second top connection pore annular groove, the other end is connected to the 4th pore；4th pore is along inner pipe joint It is axially disposed within inside it；Third evaporation apertures one end is connected to the second top connection evaporation apertures annular groove, the other end and the 4th evaporation Hole connection；4th evaporation apertures are axially disposed within inside it along inner pipe joint；The pore blocks column and is arranged in third hair It is fitted close on pore with it；The evaporation apertures block column setting and are fitted close in third evaporation apertures with it；Described second is close Two sides, and and inner pipe joint is arranged above and below the second top connection pore annular groove and the second top connection evaporation apertures annular groove in seal It is fitted close；The pore half slot is provided with inside inner pipe joint and setting concentric with it, pore half slot and the 4th Pore connection, while pore half slot is connected to by gasket with embedded capillary；The evaporation apertures half slot is provided with Inside inner pipe joint and setting concentric with it, evaporation apertures half slot are connected to the 4th evaporation apertures, while evaporation apertures half slot passes through Gasket is connected to the 5th evaporation apertures；5th evaporation apertures are connected to evaporation cavity；The water outlet is located above check valve, out The mouth of a river is arranged radially along inner pipe joint, the center place straight line of the water (flow) direction of water outlet and the 4th pore and the 4th evaporation apertures Perpendicular arrangement；The check valve is threadedly engaged with inner pipe joint, and check valve and gasket, evaporation cavity pedestal, steam inner pipe joint Hair chamber casing and thermal insulation layer tight fit are simultaneously coaxial, and the top of the evaporation cavity pedestal is threadedly coupled with inner pipe joint, evaporation The lower part of bottom of chamber seat is connect with evaporation cavity casing threads, while evaporation cavity pedestal and drill bit clearance fit and coaxial, the evaporation Chamber set with thermal insulation layer, gasket tight fit and it is coaxial；The embedded capillary is connected to evaporation cavity, and embedded capillary is embedding Enter into evaporation cavity pedestal；There is the annular groove being twist arranged inside the evaporation cavity；The thermal insulation layer is set to evaporation Chamber outside of sleeve；The top of the reamer is connect with external pipe thread, and the lower part of reamer is connect with drill bit thread；The drill bit Consistent with evaporation cavity base inner diameter, drill bit and evaporation cavity pedestal lower gap cooperate；The top connection drilling fluid runner is located at upper It is flat where plane and the first pore where the center line of top connection drilling fluid runner and the center line of the first evaporation apertures in connector Face is vertical, and top connection drilling fluid runner is arranged symmetrically along the center line of top connection；The alloy bar is arranged outside top connection Portion.

Further, first pore, the second pore, third pore, the 4th pore and embedded capillary Diameter it is equal, diameter be 0.5mm~1.5mm.

Further, the internal diameter of the water outlet is 5mm~10mm.

Further, first evaporation apertures, the second evaporation apertures, third evaporation apertures, the 4th evaporation apertures and the 5th evaporation apertures Diameter is 2mm~4mm.

Further, the insulation thickness is 0.5mm~1.5mm.

Further, the annular groove screw pitch inside the evaporation cavity is 6mm~10mm.

Further, the drill bit and evaporation cavity pedestal lower gap cooperate, fit clearance 2mm.

Further, the top connection drilling fluid flow diameter is 5mm~10mm.

Further, the top connection drilling fluid runner and the centerlines of top connection are in 25 °~35 °.

Through the above design, the utility model can be brought the following benefits:

1, loosely crisply layer evaporation direct-cooling type core drill is annular in the first top connection pore in the utility model seabed External cold source is connected by tap at slot and the first top connection evaporation apertures annular groove, a large amount of cold sources can be continuously provided, Sufficiently to freeze together rock core and basket, coring rate and coring effect are improved.

2, there is the annular groove being twist arranged, screw pitch is 6mm~10mm, spiral coil inside the utility model evaporation cavity Number is determined according to design length, finally to reach bulk freezing rock core, to guarantee smoothly to extract rock core.

3, the utility model insulation thickness is 0.5mm~1.5mm, ensure that loss of refrigeration capacity during freezing rock core It is few, it avoids and freezes between outer tube and the borehole wall.

4, the utility model drill bit is consistent with evaporation cavity base inner diameter, and fit clearance is small to ensure that rock core can smoothly enter into rock core Pipe is not in blocking.

5, principle of the utility model single action mechanism based on conventional single rotary double core barrel single action mechanism, mature and reliable, single action Effect is good.

6, the utility model is located at the semi-circular shape slot of inner pipe joint, can reduce inner tube wall between outer tube outer wall away from From to reduce bit wall thickness, plane of disruption radial dimension in reduction drilling process improves drilling efficiency.

7, pore and evaporation apertures pass through electrical discharge machining in the utility model, and pore and evaporation apertures are arranged in zero Refrigerant R410A is reduced inside part and drilling fluid exchanges heat, and is improved refrigerating efficiency, and do not influenced by Deep-sea high voltage, is mentioned High system reliability.

Detailed description of the invention

Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application, The utility model illustrative embodiments and their description do not constitute the improper limit of the utility model for understanding the utility model It is fixed, in the accompanying drawings:

Fig. 1 is that loosely crisply layer evaporates direct-cooling type core drill embodiment drilling tool top view in the utility model seabed.

Fig. 2 is that loosely crisply layer evaporates direct-cooling type core drill embodiment drilling tool A-A sectional view in the utility model seabed.

Fig. 3 is the partial enlarged view one of Fig. 2.

Fig. 4 is the partial enlarged view two of Fig. 2.

Fig. 5 is that loosely crisply layer evaporates direct-cooling type core drill embodiment top connection mandrel B-B in the utility model seabed Sectional view.

Fig. 6 is that loosely crisply layer evaporation direct-cooling type core drill embodiment inner pipe joint C-C is disconnected in the utility model seabed Face figure.

Fig. 7 is that loosely crisply layer evaporation direct-cooling type core drill embodiment inner pipe joint D-D is disconnected in the utility model seabed Face figure.

It is respectively marked in figure as follows: 1- top connection, the first pore of 2-, 3- the first top connection pore annular groove, 4- second Pore, 5- alloy bar, the first sealing ring of 6-, 7- thrust bearing, the first tapered roller bearing of 8-, 9- the second taper roller axis It holds, the second sealing ring of 10-, 11- the second top connection pore annular groove, 12- third pore, 13- water outlet, 14- pore Closure column, 15- check valve, the 4th pore of 16-, 17- pore half slot, the embedded capillary of 18-, 19- third sealing ring, The first evaporation apertures of 20-, 21- the first top connection evaporation apertures annular groove, the second evaporation apertures of 22-, 23- bearing top connection, 24- outer tube, 25- bearing spider, 26- bearing sheath, 27- nut, 28- the second top connection evaporation apertures annular groove, 29- third evaporation apertures, 30- steam Hair engaging aperture closure column, 31- inner pipe joint, the 4th evaporation apertures of 32-, 33- evaporation apertures half slot, 34- gasket, the 5th evaporation apertures of 35-, 36- thermal insulation layer, 37- evaporation cavity, 38- evaporation cavity pedestal, 39- evaporation cavity casing, 40- reamer, 41- drill bit, 42- top connection are bored Well liquid runner.

Specific embodiment

In order to illustrate more clearly of the utility model, the utility model is done into one below with reference to preferred embodiments and drawings The explanation of step.It will be appreciated by those skilled in the art that specifically described content is illustrative and be not restrictive below, no It should limit the protection scope of the present invention.In the description of the present invention, it should be understood that term " first ", " second ", " third ", " the 4th " and " the 5th " is used for description purposes only, and defines " first ", " second ", " third ", " the 4th " And the feature of " the 5th " is not offered as any sequence, quantity or importance, and be used only to distinguish different component parts.

As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the present embodiment provides a kind of seabed, loosely crisply layer steams Send out direct-cooling type core drill, including top connection 1, the first pore 2, the first top connection pore annular groove 3, the second pore 4, Alloy bar 5, the first sealing ring 6, thrust bearing 7, the first tapered roller bearing 8, the second tapered roller bearing 9, the second sealing ring 10, the second top connection pore annular groove 11, third pore 12, water outlet 13, pore block column 14, check valve 15, the Four pores 16, pore half slot 17, embedded capillary 18, third sealing ring 19, the first evaporation apertures 20, the first top connection Evaporation apertures annular groove 21, the second evaporation apertures 22, bearing top connection 23, outer tube 24, bearing spider 25, bearing sheath 26, nut 27, Second top connection evaporation apertures annular groove 28, third evaporation apertures 29, evaporation apertures block column 30, inner pipe joint 31, the 4th evaporation apertures 32, Evaporation apertures half slot 33, gasket 34, the 5th evaporation apertures 35, thermal insulation layer 36, evaporation cavity 37, evaporation cavity pedestal 38, evaporation cavity set Pipe 39, reamer 40, drill bit 41 and top connection drilling fluid runner 42.

The setting of top connection 1 is above outer tube 24 and coaxial, and top connection 1 and outer tube 24 use the company of being threadedly engaged It connects；The first top connection pore annular groove 3 and the first top connection evaporation apertures annular groove 21 are provided on 1 outer wall of top connection, First top connection pore annular groove 3 and the first top connection evaporation apertures annular groove 21 are along the circumferential setting of top connection 1；On first Connector pore annular groove 3 and about 21 two sides of the first top connection evaporation apertures annular groove are provided with third sealing ring 19；Described One pore 2 is located at 1 inside of top connection and is radially arranged, one end of the first pore 2 and the first top connection capillary orifice ring Shape slot 3 is connected to, and the other end of the first pore 2 is connected to the second pore 4；First evaporation apertures 20 are located in top connection 1 Portion and radially it is arranged, one end of the first evaporation apertures 20 is connected to the first top connection evaporation apertures annular groove 21, the first evaporation apertures 20 other end is connected to the second evaporation apertures 22；Second pore 4 and the second evaporation apertures 22 are axially disposed within along top connection 1 Inside it, and 1 center line two sides of top connection are symmetrically arranged in, and turn to corresponding second top connection at inner pipe joint 31 Pore annular groove 11, the connection of the second top connection evaporation apertures annular groove 28；The bearing top connection 23, inner pipe joint 31, on connect First 1, first sealing ring 6, thrust bearing 7 and the first tapered roller bearing 8 are coaxially arranged, bearing top connection 23 and inner pipe joint 31 It is threadedly coupled, while bearing top connection 23 and 1 clearance fit of top connection；First sealing ring 6 is arranged in top connection 1 and bearing Between top connection 23；The thrust bearing 7 is fitted close between top connection 1 and bearing top connection 23 and with the two；It is described First tapered roller bearing 8 is mounted on bearing spider 25, at the same the first tapered roller bearing 8 respectively with bearing top connection 23, Inner pipe joint 31 is fitted close；Second tapered roller bearing 9 is mounted on bearing spider 25, the second tapered roller bearing 9 It is fitted close respectively with nut 27, inner pipe joint 31；The setting of bearing spider 25 is in top connection 1 and coaxial；It is described Nut 27 is threadedly coupled with top connection 1；The upper end of said inner tube connector 31 is threadedly coupled with bearing top connection 23, inner pipe joint 31 Lower end connect with Internal Pipe Thread, while inner pipe joint 31 and 1 clearance fit of top connection；The second top connection capillary orifice ring Shape slot 11 and the second top connection evaporation apertures annular groove 28 are provided on 1 outer wall of top connection, the second top connection pore annular groove 11 And second top connection evaporation apertures annular groove 28 along the circumferential setting of top connection 1；The third pore 12 and third evaporation apertures 29 Positioned at 31 inside of inner pipe joint and along the radial arrangement of inner pipe joint 31,12 one end of third pore and the second top connection capillary orifice ring Shape slot 11 is connected to, and the other end is connected to the 4th pore 16；4th pore 16 is axially disposed within it along inner pipe joint 31 It is internal；29 one end of third evaporation apertures is connected to the second top connection evaporation apertures annular groove 28, and the other end is connected to the 4th evaporation apertures 32； 4th evaporation apertures 32 are axially disposed within inside it along inner pipe joint 31；The pore blocks column 14 and is arranged in third capillary It is fitted close with it for blocking on hole 12；The evaporation apertures block the setting of column 30 and are fitted close in third evaporation apertures 29 with it For blocking；The setting of second sealing ring 10 is in the second top connection pore annular groove 11 and the second top connection evaporation apertures annular About 28 two sides of slot, and be fitted close with inner pipe joint 31；The pore half slot 17 be provided with the inside of inner pipe joint 31 and Setting concentric with it, pore half slot 17 are connected to the 4th pore 16 and are connected by gasket 34 and embedded capillary 18 It is logical；The evaporation apertures half slot 33 is provided with 31 inside of inner pipe joint and setting concentric with it, evaporation apertures half slot 33 and the 4th Evaporation apertures 32 are connected to and are connected to by gasket 34 with the 5th evaporation apertures 35；5th evaporation apertures 35 are connected to evaporation cavity 37； The water outlet 13 is located at 15 top of check valve, and water outlet 13 is arranged radially along inner pipe joint 31, the water (flow) direction of water outlet 13 With the perpendicular arrangement of straight line where the center of the 4th pore 16 and the 4th evaporation apertures 32；The check valve 15 and inner pipe joint 31 It is threadedly engaged, check valve 15 and gasket 34, inner pipe joint 31, evaporation cavity pedestal 38, evaporation cavity casing 39 and thermal insulation layer 36 It is fitted close and coaxial, the top of the evaporation cavity pedestal 38 is threadedly coupled with inner pipe joint 31, the lower part of evaporation cavity pedestal 38 It is threadedly coupled with evaporation cavity casing 39, while evaporation cavity pedestal 38 and 41 clearance fit of drill bit and coaxial, the evaporation cavity casing 39 with thermal insulation layer 36, gasket 34 be fitted close and it is coaxial；The embedded capillary 18 is connected to evaporation cavity 37, embedded hair Tubule 18 is embedded in evaporation cavity pedestal 38；There is the annular groove being twist arranged, screw pitch 6mm inside the evaporation cavity 37 ~10mm, spiral number of turns are determined according to design length, finally to reach bulk freezing rock core, to guarantee smoothly to extract rock core；Institute It states thermal insulation layer 36 and is pasted on 39 outside of evaporation cavity casing, the utility model thermal insulation layer 36 uses aerogel heat-insulating material, and setting is thick Degree is 0.5mm~1.5mm, ensure that loss of refrigeration capacity is few during freezing rock core, avoids and freeze between outer tube and the borehole wall； The top of the reamer 40 is threadedly coupled with outer tube 24, and the lower part of reamer 40 is threadedly coupled with drill bit 41；The drill bit 41 Consistent with 38 internal diameter of evaporation cavity pedestal, drill bit 41 and 38 lower gap of evaporation cavity pedestal cooperate, fit clearance 2mm, between cooperation Gap is small, and to ensure that rock core can smoothly enter into basket be not in blocking；The top connection drilling fluid runner 42 is located in top connection 1, Plane where plane and the first pore 2 where the center line of top connection drilling fluid runner 42 and the center line of the first evaporation apertures 20 Vertically, and top connection drilling fluid runner 42 is arranged symmetrically along the center line of top connection 1；The alloy bar 5 is arranged in top connection 1 Outside, alloy bar 5 play correcting.

Wherein, the thermal insulation layer 36, evaporation cavity 37, evaporation cavity pedestal 38, evaporation cavity casing 39 collectively constitute basket.

First pore 2, the second pore 4, third pore 12, the 4th pore 16 and embedded capillary 18 Diameter it is equal, diameter be 0.5mm~1.5mm, guarantee that the liquid refrigerant R410A of certain flow smoothly flow to evaporation cavity 37, Volume, which becomes larger, occurs evaporation endothermic.First evaporation apertures 20, the second evaporation apertures 22, third evaporation apertures 29, the 4th evaporation apertures 32 And the 5th the diameters of evaporation apertures 35 be 2mm~4mm, the refrigerant R410A gas smooth flow after not only guaranteeing evaporation but also guarantees it Occupy radial dimension less as far as possible.With the flowing of refrigerant R410A, in constantly undergoing phase transition suction in helical form evaporation cavity 37 Heat, temperature are down to -20 DEG C~-30 DEG C, rock core and evaporation cavity pedestal 38 are freezed together, and improve in seabed loose and broken formation Coring rate.

Further, for convenience of processing, refrigerant R410A leakage is reduced, top connection 1 is by the utility model with central spindle design Integral type is referred to as top connection 1 in the utility model.

The first pore 2, the second pore 4, third pore 12, the 4th pore 16, first steam in the utility model Hair engaging aperture 20, the second evaporation apertures 22, third evaporation apertures 29, the 4th evaporation apertures 32 and the 5th evaporation apertures 35 pass through electrical discharge machining, It is arranged in inside parts and reduces refrigerant R410A and drilling fluid heat exchange, improve refrigerating efficiency, and not by Deep-sea high voltage It influences, improves system reliability.

As shown in figure 5,42 diameter of top connection drilling fluid runner be 5mm~10mm, top connection drilling fluid runner 42 with The centerlines of top connection 1 are in 25 °~35 °, have not only guaranteed that drilling fluid passed through, but also guarantee to be conducive to fabricate.

As shown in fig. 6, the water outlet 13 is arranged radially along inner pipe joint 31, the internal diameter of water outlet 13 is 5mm~10mm, Guarantee that the drilling fluid in basket is smoothly discharged.

Working principle of the utility model is: during the loosely crisply layer coring of seabed, for traditional single-action twin-pipes Core drill, since, there are step, rock core blocking easily at step is not easily accessible inner tube, causes rock core at the circlip of inner tube lower end Abrasion, circlip can not well extract loose frangible rock core during mentioning brill, cause rock core to fall off endless It is whole.

The utility model proposes drilling tool work when, since gap very little, step between drill bit 41 and evaporation cavity pedestal 38 can It ignores, rock core can smoothly enter into basket, be full of basket to rock core, stop revolution, the first top connection pore The refrigerant R410A liquid for having been cooled by compression is passed through at annular groove 3, refrigerant R410A liquid passes sequentially through the first capillary Hole 2, the second pore 4, the second top connection pore annular groove 11, third pore 12, the 4th pore 16, embedded capillary Volume expands after pipe 18 flows to evaporation cavity 37, and Xiang Bianwei gas absorbs a large amount of heat, makes 37 sharp temperature drop of evaporation cavity To -20 DEG C~-30 DEG C, basket and rock core are freezed together, and then refrigerant R410A gas passes through the 5th evaporation apertures 35, the Four evaporation apertures 32, third evaporation apertures 29, the second top connection evaporation apertures annular groove 28, the second evaporation apertures 22, the first evaporation apertures 20, One top connection evaporation apertures annular groove 21 is back to the compressor outside drilling tool, recycles after cooling compression again, when rock core with Basket fully charge together after mention brill removal of core again.To improve seabed loosely crisply layer core recovery percentage.

The utility model seabed loosely crisply layer evaporation direct-cooling type core drill the course of work it is as follows: first start the brill Tool is crept into, and is full of basket to rock core and is stopped drilling, and external compressor is restarted, and external compressor passes through tap and is somebody's turn to do First top connection pore annular groove 3 of drilling tool and the connection of the first top connection evaporation apertures annular groove 21, external compressor will freeze Agent R410A cools down boil down to cryogenic liquid, and liquid refrigerant R410A is by tap in the first top connection pore annular groove 3 The first pore 2 and the second pore 4 are flowed into, and is connected by way of the second top connection pore annular groove 11 with third pore 12 It is logical, the 4th pore 16 is flowed through, the 4th pore 16 is connected to by semicircle pore annular groove 17 with embedded capillary 18, is made Cryogen R410A liquid is flow in 37 annular groove of evaporation cavity of bottommost, since volume expands refrigerant R410A liquid in evaporation cavity Undergoing phase transition in 37, which becomes gas from liquid, absorbs a large amount of heat, freezes to rock core, then the refrigeration in evaporation cavity 37 Agent R410A gas enters the 5th evaporation apertures 35, and the 5th evaporation apertures 35 passed through semicircle evaporation apertures annular groove 33 and the 4th evaporation apertures 32 connections, refrigerant R410A gas enter back into third evaporation apertures 29, and third evaporation apertures 29 pass through the second top connection evaporation apertures annular Slot 28 is connected to the second evaporation apertures 22 flows to the first evaporation apertures 20 again, and refrigerant R410A gas on tap and first by connecing Head evaporation apertures annular groove 21 becomes liquid after carrying out cooling compression into external compressor, and it is whole for recycling refrigerant R410A A direct-cooled system of evaporation provides endlessly cold source, promotes drilling tool again after basket and rock core fully charge and takes rock core Out.

The above, the only preferred embodiment of the utility model, are not intended to limit the utility model, the utility model Scope of patent protection be subject to claims, all specifications and accompanying drawing content with the utility model are done same Structure change similarly should be included in the protection scope of the utility model.

Claims (9)

1. loosely crisply layer evaporates direct-cooling type core drill in seabed characterized by comprising top connection (1), the first pore (2), the first top connection pore annular groove (3), the second pore (4), alloy bar (5), the first sealing ring (6), thrust bearing (7), the first tapered roller bearing (8), the second tapered roller bearing (9), the second sealing ring (10), the second top connection capillary orifice ring Shape slot (11), third pore (12), water outlet (13), pore block column (14), check valve (15), the 4th pore (16), pore half slot (17), embedded capillary (18), third sealing ring (19), the first evaporation apertures (20), connect on first Head evaporation apertures annular groove (21), the second evaporation apertures (22), bearing top connection (23), outer tube (24), bearing spider (25), bearing shield Cover (26), nut (27), the second top connection evaporation apertures annular groove (28), third evaporation apertures (29), evaporation apertures block column (30), interior Pipe fitting (31), the 4th evaporation apertures (32), evaporation apertures half slot (33), gasket (34), the 5th evaporation apertures (35), thermal insulation layer (36), evaporation cavity (37), evaporation cavity pedestal (38), evaporation cavity casing (39), reamer (40), drill bit (41) and top connection drilling well Liquid stream road (42),

Top connection (1) setting is above outer tube (24) and coaxial, and top connection (1) is threadedly coupled with outer tube (24)；Institute It states the first top connection pore annular groove (3) and the first top connection evaporation apertures annular groove (21) is provided on top connection (1) outer wall, First top connection pore annular groove (3) and the first top connection evaporation apertures annular groove (21) are circumferentially arranged along top connection (1)；In First top connection pore annular groove (3) and the first top connection evaporation apertures annular groove (21) are provided with third sealing ring in two sides up and down (19)；It is internal and be radially arranged that first pore (2) is located at top connection (1), one end of the first pore (2) and the The connection of one top connection pore annular groove (3), the other end of the first pore (2) are connected to the second pore (4)；Described first Evaporation apertures (20) are located at top connection (1) inside and are radially arranged, and one end of the first evaporation apertures (20) and the first top connection are steamed Hair engaging aperture annular groove (21) connection, the other end of the first evaporation apertures (20) are connected to the second evaporation apertures (22)；Second pore (4) it is axially disposed within inside it with the second evaporation apertures (22) along top connection (1), and is symmetrically arranged in top connection (1) center line two Side, and corresponding second top connection pore annular groove (11), the second top connection evaporation are turned at inner pipe joint (31) Hole annular groove (28) connection；The bearing top connection (23), inner pipe joint (31), top connection (1), the first sealing ring (6), thrust Bearing (7) and the first tapered roller bearing (8) are coaxially arranged, and bearing top connection (23) is threadedly coupled with inner pipe joint (31), together When bearing top connection (23) and top connection (1) clearance fit；First sealing ring (6) setting is on top connection (1) and bearing Between connector (23)；The thrust bearing (7) is located between top connection (1) and bearing top connection (23) and closely matches with the two It closes；First tapered roller bearing (8) is mounted on bearing spider (25), at the same the first tapered roller bearing (8) respectively with Bearing top connection (23), inner pipe joint (31) are fitted close；Second tapered roller bearing (9) is mounted on bearing spider (25) On, the second tapered roller bearing (9) is fitted close with nut (27), inner pipe joint (31) respectively；The bearing spider (25) sets It sets on top connection (1) and coaxial；The nut (27) is threadedly coupled with top connection (1)；Said inner tube connector (31) Upper end is threadedly coupled with bearing top connection (23), and the lower end of inner pipe joint (31) is connect with Internal Pipe Thread, while inner pipe joint (31) with top connection (1) clearance fit；The second top connection pore annular groove (11) and the second top connection evaporation apertures annular Slot (28) is provided on top connection (1) outer wall, the second top connection pore annular groove (11) and the second top connection evaporation apertures annular Slot (28) is circumferentially arranged along top connection (1)；The third pore (12) and third evaporation apertures (29) are located at inner pipe joint (31) it is radially arranged inside and along inner pipe joint (31), third pore (12) one end and the second top connection pore annular groove (11) it is connected to, the other end is connected to the 4th pore (16)；4th pore (16) is axially arranged along inner pipe joint (31) Inside it；Third evaporation apertures (29) one end is connected to the second top connection evaporation apertures annular groove (28), the other end and the 4th evaporation Hole (32) connection；4th evaporation apertures (32) are axially disposed within inside it along inner pipe joint (31)；The pore blocks column (14) setting is fitted close on third pore (12) with it；The evaporation apertures block column (30) and are arranged in third evaporation apertures (29) it is fitted close on it；Second sealing ring (10) is arranged on the second top connection pore annular groove (11) and second Connector evaporation apertures annular groove (28) two sides up and down, and be fitted close with inner pipe joint (31)；The pore half slot (17) is opened It is located at inner pipe joint (31) inside and setting concentric with it, pore half slot (17) is connected to the 4th pore (16), simultaneously Pore half slot (17) is connected to by gasket (34) with embedded capillary (18)；The evaporation apertures half slot (33) is provided with Inside inner pipe joint (31) and setting concentric with it, evaporation apertures half slot (33) are connected to the 4th evaporation apertures (32), evaporate simultaneously Hole half slot (33) is connected to by gasket (34) with the 5th evaporation apertures (35)；5th evaporation apertures (35) and evaporation cavity (37) Connection；The water outlet (13) is located above check valve (15), and water outlet (13) is arranged radially along inner pipe joint (31), water outlet (13) the perpendicular arrangement of straight line where the center of water (flow) direction and the 4th pore (16) and the 4th evaporation apertures (32)；The list It is threadedly engaged to valve (15) and inner pipe joint (31), check valve (15) and gasket (34), inner pipe joint (31), evaporation cavity pedestal (38), evaporation cavity casing (39) and thermal insulation layer (36) are fitted close and coaxial, the top of the evaporation cavity pedestal (38) with it is interior Pipe fitting (31) is threadedly coupled, and the lower part of evaporation cavity pedestal (38) is threadedly coupled with evaporation cavity casing (39), while evaporation cavity bottom Seat (38) and drill bit (41) clearance fit and coaxial, the evaporation cavity casing (39) and thermal insulation layer (36), gasket (34) are closely It is coaxial with merging；The embedded capillary (18) is connected to evaporation cavity (37), and embedded capillary (18) is embedded in evaporation cavity In pedestal (38)；There is the annular groove being twist arranged inside the evaporation cavity (37)；The thermal insulation layer (36) is set to steaming It sends out on the outside of chamber casing (39)；The top of the reamer (40) is threadedly coupled with outer tube (24), the lower part of reamer (40) and brill Head (41) is threadedly coupled；The drill bit (41) is consistent with evaporation cavity pedestal (38) internal diameter, drill bit (41) and evaporation cavity pedestal (38) Lower gap cooperation；The top connection drilling fluid runner (42) is located in top connection (1), in top connection drilling fluid runner (42) Plane is vertical with plane where the first pore (2) and the center line of the first evaporation apertures (20) where heart line, and top connection drilling well Liquid stream road (42) is arranged symmetrically along the center line of top connection (1)；Alloy bar (5) setting is external in top connection (1).

2. loosely crisply layer evaporates direct-cooling type core drill in seabed according to claim 1, which is characterized in that described first Pore (2), the second pore (4), third pore (12), the 4th pore (16) and embedded capillary (18) diameter Equal, diameter is 0.5mm~1.5mm.

3. loosely crisply layer evaporates direct-cooling type core drill in seabed according to claim 1, which is characterized in that the water outlet The internal diameter of mouth (13) is 5mm~10mm.

4. loosely crisply layer evaporates direct-cooling type core drill in seabed according to claim 1, which is characterized in that described first The diameter of evaporation apertures (20), the second evaporation apertures (22), third evaporation apertures (29), the 4th evaporation apertures (32) and the 5th evaporation apertures (35) For 2mm~4mm.

5. loosely crisply layer evaporates direct-cooling type core drill in seabed according to claim 1, which is characterized in that described heat-insulated Layer (36) is with a thickness of 0.5mm~1.5mm.

6. loosely crisply layer evaporates direct-cooling type core drill in seabed according to claim 1, which is characterized in that the evaporation The internal annular groove screw pitch of chamber (37) is 6mm~10mm.

7. loosely crisply layer evaporates direct-cooling type core drill in seabed according to claim 1, which is characterized in that the drill bit (41) cooperate with evaporation cavity pedestal (38) lower gap, fit clearance 2mm.

8. loosely crisply layer evaporates direct-cooling type core drill in seabed according to claim 1, which is characterized in that connect on described Head drilling fluid runner (42) diameter is 5mm~10mm.

9. loosely crisply layer evaporates direct-cooling type core drill in seabed according to claim 1 or 8, which is characterized in that described Top connection drilling fluid runner (42) and the centerlines of top connection (1) are in 25 °~35 °.