CN201228754Y - Downhole small teeth difference external tooth output decelerator - Google Patents
Downhole small teeth difference external tooth output decelerator Download PDFInfo
- Publication number
- CN201228754Y CN201228754Y CNU2008200626388U CN200820062638U CN201228754Y CN 201228754 Y CN201228754 Y CN 201228754Y CN U2008200626388 U CNU2008200626388 U CN U2008200626388U CN 200820062638 U CN200820062638 U CN 200820062638U CN 201228754 Y CN201228754 Y CN 201228754Y
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- eccentric shaft
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Abstract
The utility model relates to an underground less-differential-gear outer-gear output speed reducer, which mainly comprises a top-end sleeve, an inner gear, a planetary gear, an output shaft, a mechanical seal, a bottom-end sleeve, an outer gear and an input eccentric shaft. The top-end sleeve, the inner gear 5 and the bottom-end sleeve are integrated via drill pipe connector threads, the planetary gear is fixed on the input eccentric shaft through a single direction thrust ball bearing to realize axial location, an inner gear is processed on a middle sleeve, and an outer gear is processed on the output shaft. A two-stage less-differential-gear auxiliary driving gear which utilizes oil to lubricate transforms the high-rotation-speed small-torque rotation movement of an underground turbine into the low-rotation-speed large-torque rotation movement of the output shaft which drives a drill bit. The underground less-differential-gear outer-gear output speed reducer has the advantages of compact structure, stable operation, strong bearing capacity, fine shock absorption property, sound sealing property, good driving efficiency and long service life.
Description
Technical field
The utility model relates to the few tooth difference external tooth output decelerator in a kind of down-hole, belongs to mechanical device under the oil well.
Background technique
In the job engineering, the down-hole retarder is the mechanical device of using always under oil drilling and oil well.The gear reducer turbodrill can adapt to the requirement of modern drilling technology, cooperates the high speed drill bit can improve the drilling well effect, shortens drilling period, reduces overall cost.The gear reducer turbodrill is also significant to the rate of penetration that improves major diameter well and deep-well, its original high rotating speed is reduced to can satisfy during efficient drill bit uses, the slow-speed of revolution, and the corresponding Operating torque that increased exponentially.
Use at present that retarder is a NGW type planetary reducer under maximum oil wells.The characteristics of this retarder are that driving parts is mainly radially arranged, its structural feature just in time is subjected to strict restriction with the radial dimension of underground equipment, the unrestricted requirement of axial dimension is opposite.Often too small in actual applications because of module, cause gear teeth resistance to flexure deficiency and very fast damage.Take the retarder of open type often because of drilling fluid has a large amount of solid particles wearing and tearing such as the gear teeth and bearing to be accelerated, the life-span is on the low side.In addition, also have and adopt fixed shaft gear train to realize gearing down, this transmission device damping performance is poor, transmission stability can be on the low side, the life-span short, be difficult to processing and assembling.Therefore, the design proposal of retarder still has improved necessity under the existing oil well.
The model utility content
The purpose of this utility model is to overcome the deficiency of retarder under the above-mentioned oil well, provides a kind of novel down-hole few tooth difference external tooth output decelerator, realizes the high speed low torque of turbine is rotated conversion for the rotation than the high moment of torsion of low speed on the output shaft.
The technological scheme that its technical problem that solves the utility model adopts is: the few tooth difference external tooth output decelerator in a kind of down-hole, mainly form by top sleeve 1, internal gear 5, planetary pinion 6, output shaft 12, mechanical seal 13, bottom sleeve 14, external gear 16, input eccentric shaft 19.Top sleeve 1, internal gear 5 and bottom sleeve 14 are connected into as a whole by tool joint thread, planetary pinion 6 is fixed on the input eccentric shaft 19 by roller bearing 20 and single direction thrust ball bearing 18, on intermediate sleeve 17, be processed with internal gear 5, on output shaft 12, be processed with external gear 16, input eccentric shaft 19 is all hollow shaft with output shaft 12, is the drilling fluid passage.Engagement in planetary pinion 6 and internal gear 5 outer gearings, planetary pinion 6 and external gear, when input eccentric shaft 19 high speed low torques rotate, 12 rotations that can obtain of output shaft than the high moment of torsion of low speed.Between input eccentric shaft 19 and the top sleeve 1 mechanical seal 24 is housed, between input eccentric shaft 19 and the output shaft 12 mechanical seal 9 is housed, between output shaft 12 and the bottom sleeve 14 mechanical seal 13 is housed, input eccentric shaft 19 is connected by single-row tapered roller bearing 8 with output shaft 12.Filler plug 4 is housed on the top sleeve 1.The utility model compared with prior art has following beneficial effect
1, adopt few tooth difference external tooth output, compact structure, gear teeth flexural strength and contact strength increase, overall transmission efficiency height.Adopt mechanical seal, the enclosed transmission can make the few tooth difference external tooth output decelerator in down-hole operate steadily, and increases the service life.
2, top sleeve 1, internal gear 5 and bottom sleeve 14 connect by tool joint thread, have guaranteed the intensity of cylindrical shell.On intermediate sleeve 17, be processed with internal gear 5, on output shaft 12, be processed with external gear 16, can make the diameter and the tooth depth that increase planetary pinion 6, thereby improve gear-driven bearing capacity.
4, can the multi-stage speed reducer series connection be used according to inkstone field needs, obtain multiple velocity ratio, accommodation is more extensive.
Description of drawings
Fig. 1 is the general structure schematic representation of the few tooth difference external tooth output decelerator in the utility model down-hole.
1. top sleeves, 2. a circlip, 3. baffle plate among the figure, 4. filler plug, 5. internal gear, 6. planetary pinion, 7. back-up ring, 8. single-row tapered roller bearing, 9. mechanical seal, 10. hole circlip, 11. circlips, 12. output shafts, 13. mechanical seal, 14, bottom sleeve, 15. single row angular contact ball bearings, 16. external gears, 17. intermediate sleeve, 18. single direction thrust ball bearing, 19. input eccentric shafts, 20. roller bearings, 21. back-up ring, 22. Cock screw, 23. single row angular contact ball bearings, 24. mechanical seals.
Embodiment
As shown in Figure 1, the few tooth difference external tooth output decelerator in the utility model down-hole is by top sleeve 1, axle circlip 2, baffle plate 3, filler plug 4, internal gear 5, planetary pinion 6, back-up ring 7, single-row tapered roller bearing 8, mechanical seal 9, hole circlip 10, axle circlip 11, output shaft 12, mechanical seal 13, bottom sleeve 14, single row angular contact ball bearing 15, external gear 16, intermediate sleeve 17, single direction thrust ball bearing 18, input eccentric shaft 19, roller bearing 20, back-up ring 21, Cock screw 22, single row angular contact ball bearing 23, mechanical seal 24 compositions such as grade.
Planetary pinion 6 is fixed on the input eccentric shaft 19 by roller bearing 20 and single direction thrust ball bearing 18, is processed with internal gear 5 on intermediate sleeve 17, is processed with external gear 16 on output shaft 12.Input eccentric shaft 19 is bearing on the top sleeve 1 by single row angular contact ball bearing 23, output shaft 12 is bearing on the bottom sleeve 14 by single row angular contact ball bearing 15, and top sleeve 1, internal gear 5 and bottom sleeve 14 are connected into as a whole by tool joint thread.Between input eccentric shaft 19 and the top sleeve 1 mechanical seal 24 is housed, between input eccentric shaft 19 and the output shaft 12 mechanical seal 9 is housed, between output shaft 12 and the bottom sleeve 14 mechanical seal 13 is housed, input eccentric shaft 19 is connected by single-row tapered roller bearing 8 with output shaft.Input eccentric shaft 19 is all hollow shaft with output shaft 12, is the drilling fluid passage.Filler plug 4 is housed on the top sleeve 1.
Working principle
The down-hole turbine shaft connects by spline passes to input eccentric shaft 19 to power, input eccentric shaft 19 drives planetary pinion 6 and do planetary motion in intermediate sleeve 17, the external tooth of planetary pinion 6 and internal gear 5 outer gearings form the first order and slow down, engagement forms second level deceleration in the internal tooth of planetary pinion 6 and the external gear 16, and power has been passed to output shaft 12.At this moment, the few tooth difference external tooth output decelerator in this down-hole is realized the high speed low torque of turbine is rotated conversion for the rotation than the high moment of torsion of low speed on the output shaft 12.
Claims (4)
1, the few tooth difference external tooth output decelerator in a kind of down-hole is mainly by top sleeve (1), internal gear (5), planetary pinion (6), output shaft (12), mechanical seal (13), bottom sleeve (14), external gear (16), input eccentric shaft (19) is formed, it is characterized in that: top sleeve (1), internal gear (5) and bottom sleeve (14) are connected into an integral body by tool joint thread, planetary pinion (6) is fixed on the input eccentric shaft (19) by roller bearing (20) and single direction thrust ball bearing (18), on intermediate sleeve (17), be processed with internal gear (5), on output shaft (12), be processed with external gear (16).
2, the few tooth difference external tooth output decelerator in down-hole according to claim 1, it is characterized in that: planetary pinion (6) and internal gear (5) outer gearing, engagement in planetary pinion (6) and the external gear (16), input eccentric shaft (19) is a hollow shaft with output shaft (12).
3, the few tooth difference external tooth output decelerator in down-hole according to claim 1, it is characterized in that: input eccentric shaft (19) is bearing on the top sleeve (1) by single row angular contact ball bearing (23), and output shaft (12) is bearing on the bottom sleeve (14) by single row angular contact ball bearing (15).
4, the few tooth difference external tooth output decelerator in down-hole according to claim 3, it is characterized in that: between input eccentric shaft (19) and the top sleeve (1) mechanical seal (24) is housed, between input eccentric shaft (19) and the output shaft (12) mechanical seal (9) is housed, between output shaft (12) and the bottom sleeve (14) mechanical seal (13) is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200626388U CN201228754Y (en) | 2008-03-23 | 2008-03-23 | Downhole small teeth difference external tooth output decelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200626388U CN201228754Y (en) | 2008-03-23 | 2008-03-23 | Downhole small teeth difference external tooth output decelerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201228754Y true CN201228754Y (en) | 2009-04-29 |
Family
ID=40633705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200626388U Expired - Fee Related CN201228754Y (en) | 2008-03-23 | 2008-03-23 | Downhole small teeth difference external tooth output decelerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201228754Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503678A (en) * | 2017-10-24 | 2017-12-22 | 西南石油大学 | Novel axial percussion tool based on turbine and cam |
| CN109750977A (en) * | 2017-11-01 | 2019-05-14 | 陈晓新 | A kind of New well drilling torque increase square, which disappears, to quiver except vibratory tool |
| CN115162943A (en) * | 2022-06-29 | 2022-10-11 | 重庆科技学院 | Coiled tubing drilling downhole planetary gear reducer |
-
2008
- 2008-03-23 CN CNU2008200626388U patent/CN201228754Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503678A (en) * | 2017-10-24 | 2017-12-22 | 西南石油大学 | Novel axial percussion tool based on turbine and cam |
| CN109750977A (en) * | 2017-11-01 | 2019-05-14 | 陈晓新 | A kind of New well drilling torque increase square, which disappears, to quiver except vibratory tool |
| CN115162943A (en) * | 2022-06-29 | 2022-10-11 | 重庆科技学院 | Coiled tubing drilling downhole planetary gear reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20120323 |