CN204283242U - Alignment bearing under a kind of supporter for turbine drilling tool - Google Patents
Alignment bearing under a kind of supporter for turbine drilling tool Download PDFInfo
- Publication number
- CN204283242U CN204283242U CN201420681317.1U CN201420681317U CN204283242U CN 204283242 U CN204283242 U CN 204283242U CN 201420681317 U CN201420681317 U CN 201420681317U CN 204283242 U CN204283242 U CN 204283242U
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- sliding
- contact layer
- alignment bearing
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- star
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Abstract
Alignment bearing under a kind of supporter for turbine drilling tool.Belong to drilling technique field.It solve alignment bearing under existing cartridge affects turbodrill stability and hole quality problem because there is eccentric phenomena.The inside wall of the stationary ring of this alignment bearing has first ring connected in star, the surface of first ring connected in star is fixed with the first sliding-contact layer, the lateral wall of rotating ring has second annular groove relative with first ring connected in star, the surface of the second annular groove is fixed with the second sliding-contact layer contacted with the first sliding-contact layer; The hard alloy blocks composition that the first described sliding-contact layer and the second sliding-contact layer arrange by some interleaved; One end of described stationary ring is equidistantly provided with some tooth down, and the lateral wall of the one end near tooth down on stationary ring is provided with external screw thread.Can reduce the eccentricity effect of alignment bearing under cartridge during the assembling of this alignment bearing, turbodrill Power output is stablized, to bore hole quality higher.
Description
Technical field
The utility model belongs to drilling technique field, is specifically related to a kind of alignment bearing.
Background technology
Turbodrill is a kind of mud motor based on turbomachinery principle, and its effect is the mechanical energy pressure energy of drilling fluid being changed into axle High Rotation Speed, drives the broken bottom rock of bit.Stage of turbine and thrust bearing are arranged in same housing by early stage turbodrill, assembling and maintenance difficulty higher.For ease of use technology, thrust bearing and alignment bearing are designed to independently cartridge, after bearing damage, cartridge can be changed at the scene.The radial alignment bearing of consumable accessory and axial thrust bearing are mainly changed in turbodrill maintenance.Under cartridge, alignment bearing is nearest apart from drill bit, and as friction pair excessive wear, excesssive gap, can increase bit gauge protection wearing and tearing, affect hole quality; In addition, there is eccentric phenomena in alignment bearing gravitate in an assembling process, especially the bias of alignment bearing under cartridge, and the lateral force that drill bit is born is uneven, affects hole quality.Under existing cartridge, alignment bearing many employings Hardmetal materials is as friction pair, has higher hardness and fineness.But under existing cartridge, alignment bearing has some deficiency following: (1) stationary ring external surface and turbodrill housing adopt matched in clearance, during assembling there is eccentric phenomena in gravitate bearing, when causing bearing working, surface of friction pair wearing and tearing are uneven, affect turbodrill stability;
(2) because alignment bearing under cartridge exists eccentric phenomena when assembling, making drill bit bear extra lateral force during wellbore construction, affecting hole quality.
Summary of the invention
The purpose of this utility model is the problem affecting turbodrill stability and hole quality in order to solve alignment bearing under existing cartridge because there is eccentric phenomena, and alignment bearing under a kind of supporter for turbine drilling tool is provided.
Under this supporter for turbine drilling tool, alignment bearing comprises stationary ring, stationary ring fit inside has rotating ring, the inside wall of stationary ring has first ring connected in star, the surface of first ring connected in star is fixed with the first sliding-contact layer, the lateral wall of rotating ring has second annular groove relative with first ring connected in star, the surface of the second annular groove is fixed with the second sliding-contact layer contacted with the first sliding-contact layer; The hard alloy blocks composition that the first described sliding-contact layer and the second sliding-contact layer arrange by some interleaved; One end of described stationary ring is equidistantly provided with some tooth down, and the lateral wall of the one end near tooth down on stationary ring is provided with external screw thread.
The utility model has following beneficial effect:
Under this supporter for turbine drilling tool, the stationary ring external surface of alignment bearing is processed with external screw thread, can coordinate with cartridge housing internal threads, significantly can reduce the eccentricity effect of alignment bearing in assembling process under cartridge.First sliding-contact layer and the second sliding-contact layer of this alignment bearing can form the friction pair that is slidably matched, and during drillng operation, drilling fluid can flow through described friction pair gap, for friction pair provides Cooling and Lubricator.The end face of the stationary ring of this alignment bearing is processed with tooth down, and stationary ring is screwed in cartridge enclosure interior by tooth down special tool easy to use.Can reduce the eccentricity effect of alignment bearing under cartridge under this supporter for turbine drilling tool during alignment bearing assembling, turbodrill Power output is stablized, to bore hole quality higher; Turbodrill has and has stronger abrasion resistance and working life, can reduce the number of times that makes a trip, and saves drilling time, improves bit speed, does not limit, be applicable to the drillng operation under various operating condition by down-hole high temperature.
Accompanying drawing explanation
Fig. 1 is structure sectional view of the present utility model;
Fig. 2 is right view of the present utility model;
Fig. 3 is the structural representation of the first sliding-contact layer 4 and the second sliding-contact layer 6.
1-stationary ring; 2-rotating ring; 3-first ring connected in star; 4-the first sliding-contact layer; 5-the second annular groove; 6-the second sliding-contact layer; 7-hard alloy blocks; 8-tooth down; 9-external screw thread.
Detailed description of the invention
Below in conjunction with Fig. 1 to Fig. 3, the utility model is described further:
Under this supporter for turbine drilling tool, alignment bearing comprises stationary ring 1, and stationary ring 1 fit inside has rotating ring 2, and stationary ring 1 and rotating ring 2 all adopt alloy steel to make.The inside wall of described stationary ring 1 has first ring connected in star 3, the surface of first ring connected in star 3 is fixed with the first sliding-contact layer 4, the lateral wall of rotating ring 2 has second annular groove 5 relative with first ring connected in star 3, the surface of the second annular groove 5 is fixed with the second sliding-contact layer 6 contacted with the first sliding-contact layer 4, the hard alloy blocks 7 that first sliding-contact layer 4 and the second sliding-contact layer 6 arrange by some interleaved forms, the total surface area of the hard alloy blocks 7 in each annular groove should be not less than more than 65% of the superficial area of its place ring, the gap width of adjacent two hard alloy blocks 7 can be 0.2 ~ 1mm, adopt said structure, first sliding-contact layer 4 and the second sliding-contact layer 6 can form the friction pair that is slidably matched, during drillng operation, drilling fluid can flow through described friction pair gap, for friction pair provides Cooling and Lubricator.Due to hard alloy blocks 7 extreme hardness, thus alignment bearing has stronger abrasive resistance and supporting capacity.Utilize drilling fluid as cooling and lubricating medium, drilling liquid flow, through bearing friction pair gap, is taken away the heat that bearing friction produces, thus effectively can be prevented Bearing Temperature.One end of described stationary ring 1 is equidistantly provided with some tooth down 8, and adopt said structure, stationary ring 1 is screwed in cartridge enclosure interior by tooth down 8 special tool easy to use.The lateral wall of one end near tooth down 8 on stationary ring 1 is provided with external screw thread 9, and adopt said structure, external screw thread 9 can coordinate with cartridge housing internal threads, significantly can reduce the eccentricity effect of alignment bearing in assembling process under cartridge.Can reduce the eccentricity effect of alignment bearing under cartridge under this supporter for turbine drilling tool during alignment bearing assembling, turbodrill Power output is stablized, to bore hole quality higher; Turbodrill has and has stronger abrasion resistance and working life, can reduce the number of times that makes a trip, and saves drilling time, improves bit speed, does not limit, be applicable to the drillng operation under various operating condition by down-hole high temperature.
Claims (1)
1. alignment bearing under a supporter for turbine drilling tool, comprise stationary ring (1), stationary ring (1) fit inside has rotating ring (2), it is characterized in that: the inside wall of stationary ring (1) has first ring connected in star (3), the surface of first ring connected in star (3) is fixed with the first sliding-contact layer (4), the lateral wall of rotating ring (2) has second annular groove (5) relative with first ring connected in star (3), the surface of the second annular groove (5) is fixed with the second sliding-contact layer (6) contacted with the first sliding-contact layer (4); Hard alloy blocks (7) composition that the first described sliding-contact layer (4) and the second sliding-contact layer (6) arrange by some interleaved; One end of described stationary ring (1) is equidistantly provided with some tooth down (8), and the lateral wall of the upper one end near tooth down (8) of stationary ring (1) is provided with external screw thread (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420681317.1U CN204283242U (en) | 2014-11-12 | 2014-11-12 | Alignment bearing under a kind of supporter for turbine drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420681317.1U CN204283242U (en) | 2014-11-12 | 2014-11-12 | Alignment bearing under a kind of supporter for turbine drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204283242U true CN204283242U (en) | 2015-04-22 |
Family
ID=52866417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420681317.1U Active CN204283242U (en) | 2014-11-12 | 2014-11-12 | Alignment bearing under a kind of supporter for turbine drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204283242U (en) |
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2014
- 2014-11-12 CN CN201420681317.1U patent/CN204283242U/en active Active
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