CN107630664A - A kind of warm ice sheet drilling uses ice auger drill bit - Google Patents
A kind of warm ice sheet drilling uses ice auger drill bit Download PDFInfo
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- CN107630664A CN107630664A CN201711046485.8A CN201711046485A CN107630664A CN 107630664 A CN107630664 A CN 107630664A CN 201711046485 A CN201711046485 A CN 201711046485A CN 107630664 A CN107630664 A CN 107630664A
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Abstract
The invention discloses a kind of warm ice sheet drilling ice auger drill bit, include drill body, special-shaped cutting element and pad footwear, the bottom of wherein drill body offers several tanks, make to form a passage between the inner chamber of drill body and outer wall by the tank, several special-shaped cutting elements and pad footwear are fixed on the bottom labial surface of drill body side by side.The bottom surface of pad footwear is provided with the projection or pit of several micro/nano levels.Beneficial effect：Advantageously reduce the frictional heat of drill bit bottom.Therefore, ice auger drill bit proposed by the present invention can reduce cutting heat, and ice bits are cooled down and carried beneficial to drilling fluid, a large amount of adhesions, the coalescence that effectively can prevent and avoid ice to consider to be worth doing, safety, fast drilling in ice sheet can be warmed up in glacier.
Description
Technical field
The present invention relates to a kind of ice auger drill bit, more particularly to a kind of warm ice sheet drilling uses ice auger drill bit.
Background technology
At present, polar ice sheet accounts for the 10% of Global land area, and its natural environment has important value to the mankind.Polar region
Ice sheet and glacier include to fall and the ancient times ice sheet assembled in order in millions of years with snowflake, wherein the dust granules included, can
The gas wrapped up in soluble chemical substance and ice has important to research Global climate change, prediction Future Climate and the change of circumstances
Meaning.Polar region depth moral purity drilling project is all competitively being carried out in countries in the world, to obtain high quality moral purity of the remote past.So
And polar drilling practice have shown that, warm ice formation be present in ice sheet bottom.Under in substrate gentle overlying ice sheet pressure effect, the temperature of ice
Spend the pressure fusing point of higher and close even up to ice.During revolution cutting drilling, heat caused by bit cutting easily considers ice to be worth doing
Melt or in state is melted, the ice bits adhesion coalescence of these approximate melting states is agglomerating, is not only difficult to effectively discharge, Er Qieji
Easily adsorb in bit cutting tool or drilling tool local location, hinder the circulation of drilling fluid, influence drilling efficiency.The even meeting of these ice bits
Drilling tool local location is frozen in again and causes to occur lock of tool drilling, is not only added significantly to polar drilling cost, and by pole
Ground environmental constraints, accident treatment are extremely complex and difficult.Many deep moral purity drilling projects such as arctic Greenland ice sheet NorthGRIP
Project, South Pole Dome C drilling projects etc. have to terminate brill due to that can not solve the technical barrier of above-mentioned warm ice sheet drilling
Enter.Therefore, warm ice sheet drilling efficiency how is improved, it is ensured that warm ice sheet safety, fast drilling, it has also become polar region depth moral purity driller
Journey is badly in need of the technical barrier solved.
The content of the invention
The purpose of the present invention is drilled through in polar region during moral purity to improve warm ice sheet drilling efficiency, it is ensured that warm ice sheet peace
Entirely, the quick drill and then a kind of warm ice sheet drilling provided uses ice auger drill bit.
Warm ice sheet drilling ice auger drill bit provided by the invention includes drill body, special-shaped cutting element and pad footwear, wherein
The bottom of drill body offers several tanks, makes to form a passage between the inner chamber of drill body and outer wall by the tank,
Several special-shaped cutting elements and pad footwear are fixed on the bottom labial surface of drill body side by side.
The bottom surface of pad footwear is provided with the projection or pit of several micro/nano levels.
Special-shaped cutting element is provided with two cutting edges, the rake face of two cutting edges and the position of drill body bottom tank
Accordingly, two cutting edges are arranged side by side front and rear or setting up and down, when two cutting edges are set up in parallel, are provided between two cutting edges
Groove, groove is cylinder or rectangle, and when being set before and after two cutting edges, the external diameter of rear cutting edge is more than the interior of preceding cutting edge
Footpath；When two cutting edges are setting up and down, the external diameter of cutting edge is more than the internal diameter of lower cutting edge.
The disconnected device of moral purity card is also equipped with the side wall of drill body, the disconnected device of moral purity card is fixed on by bearing pin and elastic block piece
It is disconnected and extract moral purity for card on the side of bit body.
The operation principle of the present invention：
During drill body revolution cutting, two cutting edges of special-shaped cutting element shear ice sheet respectively, produce ice bits, ice bits point
Do not rise along two cutting faces of cutting element, due to the design of double cutting edges, not only reduce the width of single cutting edge so as to
Heat caused by revolution cutting is effectively reduced, and it revolves one-turn caused ice bits amount and is greatly reduced.Drilling fluid is by drill bit
Annular gap between body and ice sheet hole wall is descending, when flowing through the tank of drill body bottom, to the cooling of special-shaped cutting element simultaneously
Carry and returned in bore passages of the ice bits through drill body.It is empty due to larger flowing between the special-shaped cutting edge of cutting element two be present
Between, effectively improve the flow field near cutting edge, more conducively cooling and carrying ice bits of the drilling fluid to cutting edge.It is directly logical to pad footwear
Bolt is crossed on the labial surface of drill body bottom, avoids directly contacting with special-shaped cutting element, and can arbitrarily change it as needed
Physical dimension, for controlling the depth of cutting element incision ice sheet, so as to control rate of penetration and ice to consider size to be worth doing.When special-shaped cutting element
Two cutting edges not when on uniform level face, pad footwear major control cutting edge penetraction depth.Pad sole designs on face
Micro/nano level bulge-structure or bowl configurations can effectively reduce its frictional resistance with ice sheet.
Beneficial effects of the present invention：
The design of the double cutting edges of special-shaped cutting element, reduces the cutting edge width of single cutting element, can be greatly reduced single
Cutting heat caused by cutting edge, so as to reduce the temperature lifting of its neighbouring ice bits.Meanwhile drill body turns round under the same terms
One week, ice bits amount was greatly decreased caused by cutting edge, avoided ice bits bulk deposition on cutting face, is advantageous to drilling fluid ice bits and takes
Band effect.In addition, stepped or going up or down stairway type arrangement before and after the double cutting edges of special-shaped cutting element and double cutting faces, is followed for drilling fluid
Ring provides bigger space, is advantageous to the cooling that drilling fluid is considered to be worth doing to cutting edge and ice.When double cutting edges of special-shaped cutting element or so
When being arranged in juxtaposition, there is a rectangle or other shapes of groove in centre, drilling fluid can circulate in the groove, improve and cut
Cut the cooling effect of sword.Water trough design on drill body, the circulation resistance of drilling fluid can be reduced, more conducively drilling fluid is in abnormal shape
Cutting element flows about, therefore beneficial to cooling cutting element and carries ice bits.Pad footwear are directly bolted on drill body bottom
On labial surface, do not contacted with cutting element, not only simple in construction and replacing is convenient, and it is not direct with the frictional heat of bottom ice sheet
Pass to cutting element.Projection or the pit design of its bottom surface micro/nano level, form non-smooth surface, can reduce pad footwear and ice sheet
Friction, advantageously reduce the frictional heat of drill bit bottom.Therefore, ice auger drill bit proposed by the present invention can reduce cutting heat,
Ice bits are cooled down and carried beneficial to drilling fluid, a large amount of adhesions, the coalescence that effectively can prevent and avoid ice to consider to be worth doing, can warm up ice sheet in glacier
Middle safety, fast drilling.
Brief description of the drawings
Fig. 1 is drill bit overall structure diagram of the present invention.
Fig. 2 is that two cutting edges of special-shaped cutting element of the present invention are arranged in juxtaposition structural representation.
Fig. 3 is arrangement schematic diagram before and after two cutting edges of special-shaped cutting element of the present invention.
Fig. 4 is arrangement schematic diagram above and below two cutting edges of special-shaped cutting element of the present invention.
Fig. 5 is pad footwear structure schematic diagram of the present invention.
1st, drill body 2, special-shaped cutting element 3, pad footwear 4, tank 5, the disconnected device 6 of moral purity card, bearing pin 7, elastic block piece
8th, projection 9, pit 10, groove 11, rear cutting edge 12, preceding cutting edge 13, cutting edge 14, lower cutting edge.
Embodiment
Refer to shown in Fig. 1 to Fig. 5：
Warm ice sheet drilling ice auger drill bit provided by the invention includes drill body 1, special-shaped cutting element 2 and pad footwear 3, its
The bottom of middle drill body 1 offers several tanks 4, makes to form one between the inner chamber of drill body 1 and outer wall by the tank 4
Passage, several special-shaped cutting elements 2 and pad footwear 3 are fixed on the bottom labial surface of drill body 1 side by side.
The disconnected device 5 of moral purity card is also equipped with the side wall of drill body 1, the disconnected device 5 of moral purity card passes through bearing pin 6 and elastic block piece 7
It is fixed on the side of bit body 1, it is disconnected and extract moral purity for card.
The bottom surface of pad footwear 3 is provided with the projection 8 or pit 9 of several micro/nano levels.
Special-shaped cutting element 2 is provided with two cutting edges, rake face and the bottom tank 4 of drill body 1 of two cutting edges
Position is corresponding, and two cutting edges are arranged side by side front and rear or setting up and down, and specific embodiment is as follows：
Embodiment one：
When two cutting edges of special-shaped cutting element 2 are set up in parallel, groove 10 is provided between two cutting edges, groove 10 is
Cylinder or rectangle.
Embodiment two：
When being set before and after two cutting edges of special-shaped cutting element 2, the external diameter of rear cutting edge 11 is more than the interior of preceding cutting edge 12
Footpath.
Embodiment three：
When two cutting edges of special-shaped cutting element 2 are setting up and down, the external diameter of cutting edge 13 is more than the interior of lower cutting edge 14
Footpath.
The operation principle of the present invention：
During the revolution cutting of drill body 1, two cutting edges of special-shaped cutting element 2 shear ice sheet respectively, produce ice bits, ice bits
Rise respectively along two cutting faces of special-shaped cutting element 2, due to the design of double cutting edges, not only reduce the width of single cutting edge
Degree is so as to effectively reduce heat caused by revolution cutting, and it revolves one-turn caused ice bits amount and is greatly reduced.Drilling fluid
It is descending by the annular gap between drill body 1 and ice sheet hole wall, when flowing through the tank 4 of the bottom of drill body 1, abnormal shape is cut
Tool 2 is cooled down and carried and returned in bore passages of the ice bits through drill body 1.Due between special-shaped 2 liang of cutting edges of cutting element exist compared with
The big flowing space, effectively improve the flow field near cutting edge, more conducively cooling and carrying ice bits of the drilling fluid to cutting edge.
Pad footwear 3 to be directly arranged on by bolt on the bottom labial surface of drill body 1, avoid directly contacting with special-shaped cutting element 2, and can basis
Any its physical dimension of replacing is needed, for controlling special-shaped cutting element 2 to cut the depth of ice sheet, so as to control rate of penetration and ice
Consider size to be worth doing.When two cutting edges of special-shaped cutting element 2 are not when on uniform level face, pad footwear major control cutting edge 13 is cut
Enter depth.Raised 8 structures of micro/nano level or the structure of pit 9 designed on pad footwear 3 bottom surface can effectively reduce its friction with ice sheet
Resistance.
Claims (3)
1. a kind of warm ice sheet drilling uses ice auger drill bit, it is characterised in that：Include drill body, special-shaped cutting element and pad footwear, its
The bottom of middle drill body offers several tanks, makes formation one between the inner chamber of drill body and outer wall logical by the tank
Road, several special-shaped cutting elements and pad footwear are fixed on the bottom labial surface of drill body side by side.
2. a kind of warm ice sheet drilling according to claim 1 uses ice auger drill bit, it is characterised in that：Described special-shaped cutting element
Two cutting edges are provided with, the rake face of two cutting edges is corresponding to the position of drill body bottom tank, and two cutting edges are simultaneously
Row are front and rear or setting up and down, when two cutting edges are set up in parallel, groove are provided between two cutting edges, groove is cylinder
Or rectangle, two cutting edges are front and rear when setting, and the external diameter of rear cutting edge is more than the internal diameter of preceding cutting edge；Divided on two cutting edges
When putting, the external diameter of cutting edge is more than the internal diameter of lower cutting edge.
3. a kind of warm ice sheet drilling according to claim 1 uses ice auger drill bit, it is characterised in that：The bottom surface of described pad footwear
It is provided with the projection or pit of several micro/nano levels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711046485.8A CN107630664B (en) | 2017-10-31 | 2017-10-31 | A kind of warm ice sheet drilling ice auger drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711046485.8A CN107630664B (en) | 2017-10-31 | 2017-10-31 | A kind of warm ice sheet drilling ice auger drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107630664A true CN107630664A (en) | 2018-01-26 |
| CN107630664B CN107630664B (en) | 2018-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711046485.8A Expired - Fee Related CN107630664B (en) | 2017-10-31 | 2017-10-31 | A kind of warm ice sheet drilling ice auger drill bit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344763A (en) * | 2019-06-18 | 2019-10-18 | 浙江大学 | A kind of ice hole Counterboring apparatus suitable under thick ice sheet environment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8006780B2 (en) * | 2007-11-08 | 2011-08-30 | Mario Fabris | Method of attachment of a towing anchor to an iceberg |
| CN103397847A (en) * | 2013-07-08 | 2013-11-20 | 吉林大学 | Rapid ice layer air drilling reverse-circulation continuous coring drill bit |
| CN103628821A (en) * | 2013-12-12 | 2014-03-12 | 中国地质大学（北京） | Coring bit suitable for soft-hard drilling objects |
| CN203822167U (en) * | 2014-01-09 | 2014-09-10 | 吉林大学 | Ice layer and ice-rock sandwich polycrystalline diamond compact (PDC) coring bit |
| CN105507816A (en) * | 2016-02-03 | 2016-04-20 | 吉林大学 | Core-drilling type hard alloy drill bit for polar ice rock interlayer |
-
2017
- 2017-10-31 CN CN201711046485.8A patent/CN107630664B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8006780B2 (en) * | 2007-11-08 | 2011-08-30 | Mario Fabris | Method of attachment of a towing anchor to an iceberg |
| CN103397847A (en) * | 2013-07-08 | 2013-11-20 | 吉林大学 | Rapid ice layer air drilling reverse-circulation continuous coring drill bit |
| CN103628821A (en) * | 2013-12-12 | 2014-03-12 | 中国地质大学（北京） | Coring bit suitable for soft-hard drilling objects |
| CN203822167U (en) * | 2014-01-09 | 2014-09-10 | 吉林大学 | Ice layer and ice-rock sandwich polycrystalline diamond compact (PDC) coring bit |
| CN105507816A (en) * | 2016-02-03 | 2016-04-20 | 吉林大学 | Core-drilling type hard alloy drill bit for polar ice rock interlayer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344763A (en) * | 2019-06-18 | 2019-10-18 | 浙江大学 | A kind of ice hole Counterboring apparatus suitable under thick ice sheet environment |
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| Publication number | Publication date |
|---|---|
| CN107630664B (en) | 2018-08-10 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180810 Termination date: 20191031 |