CN107366518A - A kind of through-hole type single rotary double core barrel - Google Patents
A kind of through-hole type single rotary double core barrel Download PDFInfo
- Publication number
- CN107366518A CN107366518A CN201710684629.6A CN201710684629A CN107366518A CN 107366518 A CN107366518 A CN 107366518A CN 201710684629 A CN201710684629 A CN 201710684629A CN 107366518 A CN107366518 A CN 107366518A
- Authority
- CN
- China
- Prior art keywords
- inner tube
- limbers
- main shaft
- hole
- core barrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000011010 flushing procedure Methods 0.000 claims abstract description 17
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 12
- 239000010432 diamond Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000007789 sealing Methods 0.000 claims description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000005553 drilling Methods 0.000 abstract description 28
- 238000004080 punching Methods 0.000 abstract description 9
- 235000007164 Oryza sativa Nutrition 0.000 abstract description 7
- 235000009566 rice Nutrition 0.000 abstract description 7
- 240000007594 Oryza sativa Species 0.000 abstract 1
- 241000209094 Oryza Species 0.000 description 6
- 239000003921 oil Substances 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- 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
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
-
- 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
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
Landscapes
- 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 kind of through-hole type single rotary double core barrel, including inner tube and the outer tube that is socketed in outside inner tube, the outer pipe bottom are connected with diamond bit, and the outer tube upper end is connected with upper drive sub；Said inner tube bottom is provided with clip spring seat, and the clip spring seat is provided with jump ring；Said inner tube upper end is rotatablely connected by connection member and upper drive sub, and the connection member and upper drive sub are provided with the flushing path connected with inner tube.Pass through such design, the design flushing path in connection member and upper drive sub, after drilling tool reaches bottom hole（Leave 100 to 250 millimeters of bottom hole）Turn on pump punching, current can go directly bottom hole, and because flow velocity is high, pressure is big, and the residue of bottom hole is carried over ground with current from the space of hole wall, and bottom hole will be rinsed well, and this is advantageous to drilling and the integrality of core.So the efficiency and the percentage of head rice of core crept into（Taking rate）Improve 10% to 20%.
Description
Technical field
The present invention relates to a kind of through-hole type single rotary double core barrel.
Background technology
For single rotary double core barrel because drill bit labial surface is narrow, drilling effect is good, is also being widely used in the probing of superficial layer, but lack
Point is to produce slag-off phenomenon during brill and again lower brill is carried, and causes bottom hole unnet, it is necessary to be rinsed to bottom hole, but
The main shaft for being existing single rotary double core barrel is solid, and rinsing current can only be flowed into by the gap between inner and outer tubes, and
Clip spring seat and inner tube are socket connections, clip spring seat be seat on drill bit step, hinder the outflow direction of current, imitate punching
Fruit is not highly desirable, it is impossible to rinses bottom hole well.Cause coring imperfect and the idle running of drilling well, reduce drilling efficiency and core
Percentage of head rice.Prior art is badly in need of a kind of through-hole type single rotary double core barrel for improving bottom hole developing result.
The content of the invention
It is an object of the invention to overcome defect present in prior art, there is provided a kind of to improve the logical of bottom hole developing result
Cellular type single rotary double core barrel.
To achieve the above object, the technical scheme is that providing a kind of through-hole type single rotary double core barrel, including it is interior
The outer tube outside inner tube is managed and is socketed in, the outer pipe bottom is connected with diamond bit, the outer tube upper end and upper drive sub
Connection；Said inner tube bottom is provided with clip spring seat, and the clip spring seat is provided with jump ring；Said inner tube upper end by connection member with it is upper
Drive sub is rotatablely connected, and the connection member and upper drive sub are provided with the flushing path connected with inner tube.
Pass through such design, the design flushing path in connection member and upper drive sub, after drilling tool reaches bottom hole（From
100 to 250 millimeters of hole on bottom）Turn on pump punching, current can go directly bottom hole, and because flow velocity is high, pressure is big, and the residue of bottom hole is with current
Ground is carried over from the space of hole wall, bottom hole will be rinsed well, and this is advantageous to drilling and the integrality of core.So
The efficiency of drilling and the percentage of head rice of core（Taking rate）Improve 10% to 20%.
As preferable, the connection member includes inner pipe joint and main shaft, and said inner tube upper end is connected with inner pipe joint,
Said inner tube upper end of joint is connected with main shaft, and the main shaft upper end is rotatablely connected by thrust ball bearing and upper drive sub；Institute
To state inner pipe joint and be provided with the lower limbers connected with inner tube, the main shaft is provided with the middle limbers connected with lower limbers,
The upper drive sub is provided with the upper limbers connected with middle limbers；The upper limbers, middle limbers and lower limbers
Formed through connection and rinse path；The lower limbers upper end is additionally provided with a plug-hole being used cooperatively with lower limbers upper port
Ball.
Such design is the refinement and optimization to rinsing path, meanwhile, punching terminates, when spudding in from well head plug-hole
In ball input drilling rod, plugging ball is gone directly inner pipe joint, and lower limbers upper end is sealed, and at this moment current are just between inner tube and outer tube
Gap in go directly bottom hole, recovered original flow direction；Inner tube is rotatablely connected by main shaft and upper drive sub, is realized two-tube
Single action.
As preferable, the upper limbers, middle limbers and lower limbers and inner tube are coaxially disposed；The flushing path
Internal diameter is more than plugging ball external diameter.Such design is beneficial to current and flowed, while ensure that plugging ball can be routed to through flushing and reach
Lower limbers upper port.
As preferable, be further opened with rinsing side opening in the main shaft middle part of sliding channel, the flushing side opening water outlet port with
Gap area between inner and outer tubes.It is such design ensure drilling when, current can from rinse side opening to gap again to
Diamond bit is cooled down, and is flowed back from outer tube and the gap of drilling.
As preferable, said inner tube upper end of joint is connected by screw thread with main shaft, and the main shaft is adjusted provided with inner tube
Nut.Such design can adjust the connection depth of inner pipe joint and main shaft by inner tube adjusting nut.
As preferable, the main shaft upper end is provided with the baffle ring for coordinating clamping with thrust ball bearing, and baffle ring is locked
Locking nut, be covered with spiral shell cover outside the locking nut.Such design is connected beneficial to main shaft and thrust ball bearing.
As preferable, the thrust ball bearing and the main shaft rinsed between side opening are provided with sealing shroud.Such design
It will be sealed between main shaft and outer tube, prevent current from flowing back.
As preferable, the main shaft of the spiral shell cover upper end and sealing shroud lower end is provided with oil sealing.Such design avoids moistening
Lubricating oil is revealed.
As preferable, spillway hole is additionally provided with said inner tube joint, the spillway hole inner port connects with inner tube, outer end
Gap area between mouth and inner and outer tubes；Include vertical section in the spillway hole, spilling water end is provided with the vertical section
Mouthful, the spilling water port is provided with the spilling water ball coordinated with it.Such design, when there is recirculation water in inner tube, pass through spilling water
Port is discharged to gap, and spilling water ball avoids the water in gap from being flowed to inner tube, improves the integrality of coring.
As preferable, centering ring is provided between said inner tube and the bottom of outer end, the bottom of the outer tube is provided with reaming
Device.Such design, avoids inner tube from swinging, and improves the efficiency of drilling.
The advantages of the present invention are：By using present technical scheme, after drilling tool reaches bottom hole（Leave
100 to 250 millimeters of bottom hole）Turn on pump punching, current can go directly bottom hole, and because flow velocity is high, pressure is big, the residue of bottom hole with current from
Ground is carried in the space of hole wall, bottom hole is rinsed well, and this is advantageous to drilling and the integrality of core.Punching terminates, and is opening
Put into during brill from well head plugging ball in drilling rod, plugging ball goes directly inner pipe joint, lower limbers upper port is sealed, at this moment current
Just through bottom hole in the gap between inner tube and outer tube, has recovered original flow direction, the efficiency and core so crept into
Percentage of head rice（Taking rate）Improve 10% to 20%.
Brief description of the drawings
Fig. 1 is existing single rotary double core barrel top half structural representation；
Fig. 2 is existing single rotary double core barrel the latter half structural representation
Fig. 3 is single rotary double core barrel top half structural representation of the present invention；
Fig. 4 is single rotary double core barrel the latter half of the present invention structural representation.
In figure：1st, inner tube；2nd, outer tube；3rd, diamond bit；4th, upper drive sub；5th, clip spring seat；6th, jump ring；7th, inner tube connects
Head；8th, main shaft；9th, thrust ball bearing；10th, lower limbers；11st, middle limbers；12nd, upper limbers；13rd, plugging ball；14th, rinse
Side opening；15th, inner tube adjusting nut；16th, baffle ring；17th, locking nut；18th, spiral shell cover；19th, sealing shroud；20th, oil sealing；21st, spillway hole；
22nd, vertical section；23rd, spilling water ball；24th, centering ring；25th, reamer；26th, existing inner tube；27th, existing outer tube；28th, existing diamond
Drill bit；29th, existing upper drive sub；30th, existing clip spring seat；31st, existing jump ring；32nd, existing inner pipe joint；33rd, existing main shaft；
34th, existing thrust ball bearing.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is further described.Following examples are only
For clearly illustrating technical scheme, and can not be limited the scope of the invention with this.
Such as Fig. 1 and Fig. 2, existing single rotary double core barrel structure, including existing inner tube 26 and it is socketed in outside existing inner tube 26
Existing outer tube 27, the existing bottom of outer tube 27 is connected with existing diamond bit 28, the existing upper end of outer tube 27 with it is existing
There is upper drive sub 29 to connect；The bottom of existing inner tube 26 is provided with existing clip spring seat 30, and the existing clip spring seat 30 is provided with
Existing jump ring 31；The upper end of existing inner tube 26 is connected with existing inner pipe joint 32, and the existing upper drive sub 29 is connected with
Existing main shaft 33, the existing inner pipe joint 32 are rotatablely connected with existing main shaft 33 by existing thrust ball bearing 34；It is described existing
It is solid shafting to have main shaft 33；Rinse after current flow into from existing upper drive sub 29 and be directly entered existing inner tube 26 and existing outer tube
Gap between 27, it cannot be introduced into existing inner tube 26 and rinse.
And existing clip spring seat 30 and existing inner tube 26 are socket connections, existing clip spring seat 30 is seat in existing drill bit step
On, the outflow direction of current is hindered, makes punching effect not highly desirable, it is impossible to rinse bottom hole well.Cause coring imperfect
With the idle running of drilling well, the percentage of head rice of drilling efficiency and core is reduced.
As shown in Figure 3 and Figure 4, a kind of through-hole type single rotary double core barrel, including inner tube 1 and the outer tube that is socketed in outside inner tube 1
2, the bottom of outer tube 2 is connected with diamond bit 3, and the upper end of outer tube 2 is connected with upper drive sub 4；The bottom of said inner tube 1
Provided with clip spring seat 5, the clip spring seat 5 is provided with jump ring 6；The upper end of said inner tube 1 is rotated by connection member and upper drive sub 4
Connection, the connection member and upper drive sub 4 are provided with the flushing path connected with inner tube 1.
The connection member includes inner pipe joint 7 and main shaft 8, and the upper end of said inner tube 1 is connected with inner pipe joint 7, described interior
The upper end of pipe joint 7 is connected with main shaft 8, and the upper end of main shaft 8 is rotatablely connected by thrust ball bearing 9 and upper drive sub 4；It is described
Inner pipe joint 7 is provided with the lower limbers 10 connected with inner tube 1, and the main shaft 8 is provided with logical in being connected with lower limbers 10
Water hole 11, the upper drive sub 4 are provided with the upper limbers 12 connected with middle limbers 11；The upper limbers 12, in lead to
Path is rinsed in water hole 11 with lower limbers 10 through formation is connected；The upper end of lower limbers 10 is additionally provided with one and lower limbers
The plugging ball 13 that 10 upper ports are used cooperatively.
The upper limbers 12, middle limbers 11 and lower limbers 10 are coaxially disposed with inner tube 1；The flushing inner passage diameter
More than the external diameter of plugging ball 13.
Be further opened with rinsing side opening 14 in the middle part of sliding channel of main shaft 8, the flushing water outlet port of side opening 14 and the inner tube 1 and
Gap area between outer tube 2.
The upper end of said inner tube joint 7 is connected by screw thread with main shaft 8, and the main shaft 8 is provided with inner tube adjusting nut 15.
The upper end of main shaft 8 is provided with the baffle ring 16 for coordinating clamping with thrust ball bearing 9, and the locking that baffle ring 16 is locked
Nut 17, spiral shell cover 18 is covered with outside the locking nut 17.
The thrust ball bearing 9 and the main shaft 8 rinsed between side opening 14 are provided with sealing shroud 19.
The main shaft 8 of the upper end of spiral shell cover 18 and the lower end of sealing shroud 19 is provided with oil sealing 20.
Spillway hole 21 is additionally provided with said inner tube joint 7, the inner port of spillway hole 21 connects with inner tube 1, external port with
Gap area between inner tube 1 and outer tube 2；Include vertical section 22 in the spillway hole 21, be provided with and overflow in the vertical section 22
Water end (W.E.) mouth, the spilling water port are provided with the spilling water ball 23 coordinated with it（Steel ball）.
Centering ring 24 is provided between said inner tube 1 and the bottom of outer end, the bottom of the outer tube 2 is provided with reamer 25.
Embodiment 1
A kind of through-hole type single rotary double core barrel, including inner tube 1 and the outer tube 2 being socketed in outside inner tube 1, the bottom of outer tube 2 connection
There is diamond bit 3, the upper end of outer tube 2 is connected with upper drive sub 4；The bottom of said inner tube 1 is provided with clip spring seat 5, the card
Spring abutment 5 is provided with jump ring 6；The upper end of said inner tube 1 is rotatablely connected by connection member and upper drive sub 4, the connection member
The flushing path connected with inner tube 1 is provided with upper drive sub 4.
The connection member includes inner pipe joint 7 and main shaft 8, and the upper end of said inner tube 1 is connected with inner pipe joint 7, described interior
The upper end of pipe joint 7 is connected with main shaft 8, and the upper end of main shaft 8 is rotatablely connected by thrust ball bearing 9 and upper drive sub 4；It is described
Inner pipe joint 7 is provided with the lower limbers 10 connected with inner tube 1, and the main shaft 8 is provided with logical in being connected with lower limbers 10
Water hole 11, the upper drive sub 4 are provided with the upper limbers 12 connected with middle limbers 11；The upper limbers 12, in lead to
Path is rinsed in water hole 11 with lower limbers 10 through formation is connected；The upper end of lower limbers 10 is additionally provided with one and lower limbers
The plugging ball 13 that 10 upper ports are used cooperatively.
The upper limbers 12, middle limbers 11 and lower limbers 10 are coaxially disposed with inner tube 1；The flushing inner passage diameter
More than the external diameter of plugging ball 13.
Be further opened with rinsing side opening 14 in the middle part of sliding channel of main shaft 8, the flushing water outlet port of side opening 14 and the inner tube 1 and
Gap area between outer tube 2.
When in use, in drilling process, upper drive sub 4 drives outer tube 2 to rotate, and the bottom of outer tube 2 is in diamond bit 3
Progressively descending during rotating into, the upper end of inner tube 1 is connected with inner pipe joint 7, and the upper end of said inner tube joint 7 is connected with main shaft 8, institute
State the upper end of main shaft 8 to be rotatablely connected by thrust ball bearing 9 and upper drive sub 4, in drilling process, inner tube 1 is not with outer tube 2
Rotate together, but as outer tube 2 is descending together, core is eaten into inner tube 1, after predetermined depth is reached, upper drive sub 4
Separated with outer tube 2, and it is up together with inner tube 1, and the bottom jump ring 6 of inner tube 1 locks core, and core is lifted, is lifting process
In and during inner tube 1 is put down again, inner tube 1 and outer tube 2 have part disintegrating slag and fallen in drilling, and these disintegrating slags are not if gone
Remove, can produce two negative consequences, first, foot of hole is gathered in, when creeping into next time, diamond bit 3 can be caused to dally,
Drilling time is wasted on disintegrating slag, and drilling really can not be realized with rock mass, reduces drilling efficiency；Second, in next rock
When core takes in one's arms, the part of the top is disintegrating slag part, is not required core, reduces the percentage of head rice of core.
So path is rinsed in the upper limbers 12 of this programme, middle limbers 11 and lower limbers 10 through formation is connected, bore
After tool reaches bottom hole（Leave 100 to 250 millimeters of bottom hole）Turn on pump punching, current can by rinse path go directly foot of hole, by
High in flow velocity, pressure is big, and the residue of bottom hole is carried over ground with current from the space of hole wall, and bottom hole is rinsed well.Then again
Drilling next time is carried out, which improves the integrality that the efficiency of drilling and core are extracted.Punching terminates, when spudding in from
Path is rinsed plugging ball 13（Steel ball）In input in drive sub 4, plugging ball 13 goes directly inner pipe joint 7, lower limbers 10
Upper port seals, and at this moment current just go directly in the gap between inner tube 1 and outer tube 2 bottom hole, then carries out to diamond bit 3 cold
But, flowed back from outer tube 2 and the gap of drilling, the efficiency and the percentage of head rice of core so crept into（Taking rate）Improve
10% to 20%.
Embodiment 2
Optimize as one kind to embodiment 1, the upper end of said inner tube joint 7 is connected by screw thread with main shaft 8, on the main shaft 8
Provided with inner tube adjusting nut 15.
The upper end of main shaft 8 is provided with the baffle ring 16 for coordinating clamping with thrust ball bearing 9, and the locking that baffle ring 16 is locked
Nut 17, spiral shell cover 18 is covered with outside the locking nut 17.
The thrust ball bearing 9 and the main shaft 8 rinsed between side opening 14 are provided with sealing shroud 19.
The main shaft 8 of the upper end of spiral shell cover 18 and the lower end of sealing shroud 19 is provided with oil sealing 20.
Spillway hole 21 is additionally provided with said inner tube joint 7, the inner port of spillway hole 21 connects with inner tube 1, external port with
Gap area between inner tube 1 and outer tube 2；Include vertical section 22 in the spillway hole 21, be provided with and overflow in the vertical section 22
Water end (W.E.) mouth, the spilling water port are provided with the spilling water ball 23 coordinated with it.
Centering ring 24 is provided between said inner tube 1 and the bottom of outer end, the bottom of the outer tube 2 is provided with reamer 25.
During drilling, rinse current and gone directly from the gap between inner tube 1 and outer tube 2 bottom hole, then to Buddha's warrior attendant
Aiguille 3 is cooled down, and is flowed back from outer tube 2 and the gap of drilling, but also has a small amount of current from clip spring seat 5 and inner tube 1
Gap is flowed into inner tube 1, and is deposited in the upper end of inner tube 1；Either when to bore flushing, the water body that stays in inner tube 1 can
To be discharged to by spilling water port in the gap between inner tube 1 and outer tube 2, ensure the integrality of core.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as the protection domain of invention.
Claims (10)
- A kind of 1. through-hole type single rotary double core barrel, it is characterised in that：Including inner tube and the outer tube being socketed in outside inner tube, the outer tube Bottom is connected with diamond bit, and the outer tube upper end is connected with upper drive sub；Said inner tube bottom is provided with clip spring seat, described Clip spring seat is provided with jump ring；Said inner tube upper end is rotatablely connected by connection member and upper drive sub, the connection member and Upper drive sub is provided with the flushing path connected with inner tube.
- 2. through-hole type single rotary double core barrel as claimed in claim 1, it is characterised in that：The connection member includes inner pipe joint And main shaft, said inner tube upper end are connected with inner pipe joint, said inner tube upper end of joint is connected with main shaft, and the main shaft upper end passes through Thrust ball bearing is rotatablely connected with upper drive sub；Said inner tube joint is provided with the lower limbers connected with inner tube, the master Axle is provided with the middle limbers connected with lower limbers, and the upper drive sub is provided with the upper water flowing connected with middle limbers Hole；Path is rinsed in the upper limbers, middle limbers and lower limbers through formation is connected；The lower limbers upper end is additionally provided with One plugging ball being used cooperatively with lower limbers upper port.
- 3. through-hole type single rotary double core barrel as claimed in claim 2, it is characterised in that：The upper limbers, middle limbers and Lower limbers is coaxially disposed with inner tube；The flushing inner passage diameter is more than plugging ball external diameter.
- 4. through-hole type single rotary double core barrel as claimed in claim 3, it is characterised in that：Also opened up in the main shaft middle part of sliding channel There are flushing side opening, the gap area rinsed between side opening water outlet port and inner and outer tubes.
- 5. through-hole type single rotary double core barrel as claimed in claim 4, it is characterised in that：Said inner tube upper end of joint passes through screw thread It is connected with main shaft, the main shaft is provided with inner tube adjusting nut.
- 6. through-hole type single rotary double core barrel as claimed in claim 5, it is characterised in that：The main shaft upper end is provided with and thrust ball The baffle ring of bearing fit clamping, and the locking nut that baffle ring is locked, are covered with spiral shell cover outside the locking nut.
- 7. through-hole type single rotary double core barrel as claimed in claim 6, it is characterised in that：The thrust ball bearing is with rinsing side opening Between main shaft be provided with sealing shroud.
- 8. through-hole type single rotary double core barrel as claimed in claim 7, it is characterised in that：The spiral shell cover upper end and sealing shroud lower end Main shaft be provided with oil sealing.
- 9. through-hole type single rotary double core barrel as claimed in claim 8, it is characterised in that：Spilling water is additionally provided with said inner tube joint Hole, the spillway hole inner port connect with inner tube, the gap area between external port and inner and outer tubes；Wrapped in the spillway hole Containing vertical section, spilling water port is provided with the vertical section, the spilling water port is provided with the spilling water ball coordinated with it.
- 10. through-hole type single rotary double core barrel as claimed in claim 9, it is characterised in that：The bottom of said inner tube and outer end it Between be provided with centering ring, the bottom of the outer tube is provided with reamer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710684629.6A CN107366518A (en) | 2017-08-11 | 2017-08-11 | A kind of through-hole type single rotary double core barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710684629.6A CN107366518A (en) | 2017-08-11 | 2017-08-11 | A kind of through-hole type single rotary double core barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107366518A true CN107366518A (en) | 2017-11-21 |
Family
ID=60310312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710684629.6A Pending CN107366518A (en) | 2017-08-11 | 2017-08-11 | A kind of through-hole type single rotary double core barrel |
Country Status (1)
| Country | Link |
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| CN (1) | CN107366518A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219611A (en) * | 2019-06-14 | 2019-09-10 | 山西晋煤集团技术研究院有限责任公司 | A kind of combination of underground coal mine horizontal drilling core bit and its application method |
| CN110500057A (en) * | 2019-07-22 | 2019-11-26 | 自然资源部第一海洋研究所 | A kind of two-tube rock core core drill of band inside spin |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110219611A (en) * | 2019-06-14 | 2019-09-10 | 山西晋煤集团技术研究院有限责任公司 | A kind of combination of underground coal mine horizontal drilling core bit and its application method |
| CN110219611B (en) * | 2019-06-14 | 2021-02-05 | 山西晋煤集团技术研究院有限责任公司 | Coal mine underground horizontal drilling core drill tool combination and use method thereof |
| CN110500057A (en) * | 2019-07-22 | 2019-11-26 | 自然资源部第一海洋研究所 | A kind of two-tube rock core core drill of band inside spin |
| CN110500057B (en) * | 2019-07-22 | 2022-02-01 | 自然资源部第一海洋研究所 | Core drilling tool with internal spiral double tubes |
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