CN202012570U - Oil film bearing of main shaft of wind driven generator - Google Patents
Oil film bearing of main shaft of wind driven generator Download PDFInfo
- Publication number
- CN202012570U CN202012570U CN2011200645728U CN201120064572U CN202012570U CN 202012570 U CN202012570 U CN 202012570U CN 2011200645728 U CN2011200645728 U CN 2011200645728U CN 201120064572 U CN201120064572 U CN 201120064572U CN 202012570 U CN202012570 U CN 202012570U
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- CN
- China
- Prior art keywords
- bearing
- thrust
- main
- lining
- bushing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/31—Wind motors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The utility model discloses an oil film bearing of a main shaft of a wind driven generator, relating to a main bearing of the wind driven generator. The oil film bearing solves the problems in the prior art that the bearing has short service life and poor reliability. The oil film bearing is characterized in that the outer cylindrical surface of a shaft sleeve is matched with a bushing in a sliding way, the inner bore cylindrical surface of the shaft sleeve is connected with the main shaft through a key, the plane of a shoulder of the shaft sleeve is matched with the main thrust surface of the bushing in a sliding way, the non-shoulder side of the shaft sleeve is connected with a thrust ring into a whole by a bolt; the outer surface of the bushing is matched with the inner spherical surface of a bearing seat in a sliding way and connected with the inner spherical surface of the bearing seat by a key; three rows of static pressure oil chambers that are circumferentially and uniformly distributed are arranged on the inner surface of the bushing; four thrust surface static pressure oil chambers that are circumferentially and uniformly distributed are arranged on the main thrust surface of the bushing, and a dynamic pressure lubrication wedge surface is arranged on the main thrust surface of the bushing; and an axial auxiliary bearing of the bushing is composed of the right side surface of the bushing and the thrust ring and is only provided with a dynamic lubrication wedge surface. The oil film bearing of the main shaft is applicable to various wind driven generator units in a double-feed type, a direct driving type and a hybrid type with large installed capacity and also applicable to other equipments with similar requirements.
Description
Technical field
The utility model relates to wind-driven generator, particularly a kind of mainshaft bearing of wind-driven generator.
Background technique
Wind-power electricity generation is subjected to the attention of countries in the world day by day as a kind of renewable energy sources of cleaning.
Current, wind-driven generator all adopts variable speed constant frequency and feather technology, mainly contains 3 kinds: double-fed type, directly driving type and hybrid.Until today, the bearing of all wind-powered electricity generation units all is a rolling bearing.The bearing of wind-powered electricity generation unit, particularly main shaft main bearing, stressed complexity, continuously running require long lifetime (20 years working life), high reliability (failure-free operation is more than 130,000 hours, and reliability is more than 95%), and mustn't dismounting, and operating mode is very harsh; The expected life in 20 years is unable to reach; Become the bottleneck of wind-driven generator, determined the ability of complete machine.Thereby, improve the rolling bearing performance of current wind-driven generator, so that research and develop the main shaft main bearing of new principle, new structure, imperative, and very urgent.
Summary of the invention
The utility model is the shortcoming that exists at prior art, and a kind of wind driven generator principal shaft filmatic bearing is provided, and solves the problem of existing main shaft rolling bearing life weak point, poor reliability.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of wind driven generator principal shaft filmatic bearing, constitute by axle sleeve, lining, thrust ring and coupling bolt, it is characterized in that: the outer cylinder of described axle sleeve and described lining are slidingly matched, the endoporus cylinder of described axle sleeve is connected with main shaft by key, the main thrust surface of the plane of described axle sleeve shoulder and described lining constitutes the slip coupling surface, the no shoulder side of described axle sleeve joins together with bolt and described thrust ring; The outer surface of described lining is spherical, is slidingly matched with the inner ball surface of bearing support, and limits relatively rotating of their spaced winding axis with connecting key; Offer the static pressure oil pocket of the circumferential five equilibrium of three rows at the internal surface of described lining, form the working surface of three equal capabilities; Circumferential uniform four thrust static pressure oil pockets on the main thrust surface of described lining, and be provided with the hydrodynamic lubrication wedge surface; The countershaft of described lining is to supporting, is made of the right flank and the thrust ring of lining, only is provided with the hydrodynamic lubrication wedge surface.
The described static pressure oil pocket of three rows is axial symmetrical narrow oil pocket, and during work, main static pressure oil pocket is imported by calculating the definite pressure and the hydrostatic lubrication oil of flow through oil inlet passage by oil inlet hole, plays main carrying effect; Two auxilliary static pressure oil pockets are positioned at the top, both sides in addition, also import the lubricant oil of certain pressure and flow, make the dynamic pressure fuel feeding.
Four described thrust static pressure oil pockets are by the lubricant oil of selected pressure of thrust surface oil inlet hole input and flow, the thrust load when bearing work.
Described lining is an integrated type, and the both sides end face is the slip coupling surface.
Advantage of the present utility model and beneficial effect:
Because the axle sleeve outer cylinder is the slip coupling surface of radial support, it and lining endoporus cylinder constitute a pair of sliding friction pair; Its inner cylinder is connected with key with main shaft, rotates with axle; Its shoulder is the slip coupling surface of axially mounting, with the main thrust surface formation plane thrust sliding friction pair of lining.Because the endoporus cylinder of lining is offered oil pocket and imported the lubricant oil with pressure, when blower fan was worked, no matter how low rotating speed is, even when stall, can both form a complete carrying oil film in the working zone, causes liquid friction; The outer surface of lining is spherical, is slidingly matched with the inner ball surface of bearing support, and connecting key limits them around the relatively rotating of axis, but does not influence automatic positioning function.
In order to make full use of the dynamic pressure bearing capacity of bearing, the static pressure oil pocket that produces in lining in the bearing area, faces outer carrying and makes a concerted effort, but avoid fluid max-Q power (distribution) district for axial symmetrical narrow oil pocket during work; The large stretch of dynamic pressure loaded area that is kept will be brought into play increasing carrying effect along with the rising of wind speed round.
In lining, be the center with the static pressure oil pocket, form three working surfaces with same bearer ability (because of internal surface complete, continuous, its dynamic pressure wrapping angle is greater than 120 ° of dynamic pressure oil supply structure are arranged), one of them is placed the working zone, play main carrying effect, this static pressure oil pocket is main oil pocket, feeds the hydrostatic lubrication oil of setting; Two other oil pocket (promptly become auxilliary oil pocket, feed the lubricant oil with certain pressure) is made the dynamic pressure fuel feeding, but when axle because of wind-force beat lift near the time, its auxilliary oil pocket is quiet-dynamic pressure effect strengthens, and play the back pressure effect, thereby it is steady to guarantee that blower fan turns round.
For increasing the service life, improve reliability, the utility model has adopted the Redundancy Design method: be lining at the easy inefficacy part in this scheme promptly, so its three working surfaces can be changed as required, and can under the situation of not pulling down bearing support, realize on-line conversion, therefore, this main shaft main bearing extends to three times of common similar bearing working life.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the K-K sectional drawing (lining cross-section structure) of Fig. 1;
Fig. 3 is that the M of Fig. 1 is to view (lining master thrust surface structure).
The utility model is elaborated by preferred embodiment below in conjunction with accompanying drawing.
Embodiment
As shown in Figure 1, a kind of wind driven generator principal shaft filmatic bearing is made of axle sleeve 3, lining 4, thrust ring 7 and coupling bolt; The outer cylinder of described axle sleeve 3 and described lining 4 are slidingly matched, the endoporus cylinder of described axle sleeve 3 is connected with main shaft 1 by key 2, the main thrust surface H of the plane of described axle sleeve 3 shoulder 3-1 and described lining 4 constitutes the slip coupling surface, the no shoulder side of described axle sleeve 3 joins together with bolt and described thrust ring 7; The outer surface of described lining 4 is spherical, is slidingly matched with the inner ball surface of bearing support 5, and limits relatively rotating of their spaced winding axis with connecting key 6.
Described lining 4 is an integrated type, and the both sides end face is the slip coupling surface.
As shown in Figure 1, 2, offer the static pressure oil pocket 4-1 of the circumferential five equilibrium of three rows at the internal surface of described lining 4, form the working surface of three equal capabilities, described static pressure oil pocket 4-1 is axial symmetrical narrow oil pocket, area is as far as possible little, and leaves the peak region of hydrodynamic pressure, to keep the dynamic pressure bearing capacity to greatest extent, when rotation speed of fan was elevated to a certain numerical value (i.e. She Ji " critical speed of rotation "), dynamic pressure also has independently bore outer ability of carrying; During no particular requirement, the formula work of pulling together is carried out in static pressure, dynamic pressure joint work; Also practicable relay-type work.
During work (position shown in Figure 1), import by calculating the definite pressure and the hydrostatic lubrication oil (p of flow through oil inlet passage 4-1-1-2 by oil inlet hole 4-1-1-1 to main static pressure oil pocket 4-1-1
1, q
1), play main carrying effect, can rely on hydrostatic effects to bear outer carrying separately fully; Two auxilliary static pressure oil pocket 4-1-2 are positioned at the top, both sides in addition, are also imported the lubricant oil (p of certain pressure and flow through oil inlet passage 4-1-2-2 by oil inlet hole 4-1-2-1
2, q
2), make the dynamic pressure fuel feeding; Change and cause that main shaft lifts and during near auxilliary oil pocket, the pressure of auxilliary oil pocket strengthens rising voluntarily because of going out flow resistance when wind carries, its dynamic pressure effect also strengthens because of the oil film attenuation, stops lifting of main shaft jointly, i.e. running to main shaft plays stabilization.
Shown in Fig. 1,3, the axial force during work, this supports planar slide and bears by the main thrust surface H of the shoulder 3-1 of axle sleeve and lining.On the main thrust surface H of described lining 4, circumferentially uniform four thrust static pressure oil pocket 4-2 are imported the lubricant oil (p that selectes pressure and flow by thrust surface oil inlet hole 4-2-1
3, q
3), and be provided with the hydrodynamic lubrication wedge surface, like this, just possessed the formation mechanism of hydrostatic pressure, dynamic pressure joint effect, the thrust load when bearing work.And the countershaft of lining 4 is to supporting, is made of the right flank and the thrust ring 7 of lining, only is provided with the hydrodynamic lubrication wedge surface on the right flank of described lining 4, plays the thrust effect under special circumstances, whenever surperficial direct friction can not take place.
In load-bearing component, the easy assisting agency of a cover is set, promptly can in bearing support, carry out freely changing of three working surfaces of lining (being each about 60 ° of sleeve inner surface of oil pocket center and circumferential both sides) position; Promptly when a main oil pocket (also being main working surface) is changed in decision, utilize conversion equipment in temporary stoppage, lining to be rotated 120 °, be about to an auxilliary oil pocket and change the working area over to, even if input hydrostatic lubrication oil has become main oil pocket; Thereby, realized the on-line conversion of working zone; Therefore like this, will prolong twice (reach similar plain bearing three times) working life of bearing again.
Lining slip surface of the present utility model, adopt the excellent formula structure of multiple layer metal collection, integral rigidity is good, the working surface performance, comprises that antiwear property, anti-attrition performance, anti-solid contamination performance and corrosion resistance etc. are all fine, adapts to the work and the environmental requirement of wind-powered electricity generation mainshaft bearing.
(load is big to take into full account the job requirement of main shaft, rotating speed is low, long lifetime, exempt from mounting or dismounting) and environmental conditions (dust storm, corrosion, temperature, humidity and variation), and must be long-term work under-40 °～100 ℃ environment, its lubricant oil should be to have excellent wear resistance, resistance to extreme pressure, oxidation stability, corrosion resistance, resistance to emulsion, high-flash, low pour point, pole height viscosity index (VI＞220) and good artificial oils such as low temperature flow; The optional scope of its viscosity (cSt, 40 ℃) is ISO VG (100), 220,320,460; Sealing material should use nitrile butadiene rubber, fluorosioloxane rubber or vinyl-methyl polysilicon rubber.If, during gear oil in the shared speed increaser gear-box of bearing, must establish special-purpose oil supply system in addition, carry out independent fuel feeding.
The utility model is applicable to double-fed type, directly driving type and hybrid-type all kinds of wind-powered electricity generation unit of big electric motor power (MW class); Also be applicable to other equipment of similar requirement.
Claims (4)
1. wind driven generator principal shaft filmatic bearing, constitute by axle sleeve (3), lining (4), thrust ring (7) and coupling bolt, it is characterized in that: the outer cylinder of described axle sleeve (3) and described lining (4) are slidingly matched, the endoporus cylinder of described axle sleeve (3) is connected with main shaft (1) by key (2), the main thrust surface (H) of the plane of described axle sleeve (3) shoulder (3-1) and described lining (4) constitutes the slip coupling surface, the no shoulder side of described axle sleeve (3) joins together with bolt and described thrust ring (7); The outer surface of described lining (4) is spherical, is slidingly matched with the inner ball surface of bearing support (5), and limits relatively rotating of their spaced winding axis with connecting key (6); Offer the static pressure oil pocket (4-1) of the circumferential five equilibrium of three rows at the internal surface of described lining (4), form the working surface of three equal capabilities; On the main thrust surface of described lining (4), circumferential uniform four thrust static pressure oil pockets (4-2), and be provided with the hydrodynamic lubrication wedge surface; The countershaft of described lining (4) is to supporting, and right flank and thrust ring (7) formation by lining only are provided with the hydrodynamic lubrication wedge surface.
2. according to the described wind driven generator principal shaft filmatic bearing of claim 1, it is characterized in that: the three described static pressure oil pockets of row (4-1) are axial symmetrical narrow oil pocket, during work, main static pressure oil pocket (4-1-1) is imported by calculating the definite pressure and the hydrostatic lubrication oil (p of flow through oil inlet passage (4-1-1-2) by oil inlet hole (4-1-1-1)
1, q
1), play main carrying effect; Two auxilliary static pressure oil pockets (4-1-2) are positioned at the top, both sides in addition, also import the lubricant oil (p of certain pressure and flow
2, q
2), make the dynamic pressure fuel feeding.
3. according to the described wind driven generator principal shaft filmatic bearing of claim 1, it is characterized in that: four described thrust static pressure oil pockets (4-2), by the lubricant oil (p of selected pressure of thrust surface oil inlet hole (4-2-1) input and flow
3, q
3), the thrust load when bearing work.
4. according to the described wind driven generator principal shaft filmatic bearing of claim 1, it is characterized in that: described lining (4) is integrated type, and the both sides end face is the slip coupling surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200645728U CN202012570U (en) | 2011-03-11 | 2011-03-11 | Oil film bearing of main shaft of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200645728U CN202012570U (en) | 2011-03-11 | 2011-03-11 | Oil film bearing of main shaft of wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202012570U true CN202012570U (en) | 2011-10-19 |
Family
ID=44783183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200645728U Expired - Lifetime CN202012570U (en) | 2011-03-11 | 2011-03-11 | Oil film bearing of main shaft of wind driven generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN202012570U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562802A (en) * | 2012-03-19 | 2012-07-11 | 徐积勉 | Assembly type dynamic and static pressure bearing with radiating fin and finely-adjustable clearance |
| CN104364521A (en) * | 2012-06-10 | 2015-02-18 | 维斯塔斯风力系统有限公司 | Main bearing arrangement for a wind turbine |
| CN108779801A (en) * | 2016-02-02 | 2018-11-09 | 博格华纳公司 | Bearing and its manufacture and use process |
| CN109139393A (en) * | 2018-09-25 | 2019-01-04 | 北京金风科创风电设备有限公司 | Shafting structure, lubricating method and wind generating set |
| CN110159728A (en) * | 2019-06-24 | 2019-08-23 | 杨庆华 | A kind of harmonic speed reducer |
| CN113508241A (en) * | 2019-03-22 | 2021-10-15 | 美国圣戈班性能塑料公司 | Composite bearing and manufacturing and using method thereof |
-
2011
- 2011-03-11 CN CN2011200645728U patent/CN202012570U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562802A (en) * | 2012-03-19 | 2012-07-11 | 徐积勉 | Assembly type dynamic and static pressure bearing with radiating fin and finely-adjustable clearance |
| CN104364521A (en) * | 2012-06-10 | 2015-02-18 | 维斯塔斯风力系统有限公司 | Main bearing arrangement for a wind turbine |
| CN108779801A (en) * | 2016-02-02 | 2018-11-09 | 博格华纳公司 | Bearing and its manufacture and use process |
| US11098754B2 (en) | 2016-02-02 | 2021-08-24 | Borgwarner Inc. | Bearing and process of making and using the same |
| CN109139393A (en) * | 2018-09-25 | 2019-01-04 | 北京金风科创风电设备有限公司 | Shafting structure, lubricating method and wind generating set |
| CN113508241A (en) * | 2019-03-22 | 2021-10-15 | 美国圣戈班性能塑料公司 | Composite bearing and manufacturing and using method thereof |
| CN110159728A (en) * | 2019-06-24 | 2019-08-23 | 杨庆华 | A kind of harmonic speed reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANXI SANSHENG ENERGY-SAVING ENVIRONMENTAL PROTEC Free format text: FORMER OWNER: GUO XIQUAN Effective date: 20140512 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 030000 TAIYUAN, SHAANXI PROVINCE TO: 030006 TAIYUAN, SHAANXI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140512 Address after: 030006, Taiyuan hi tech Zone, Shanxi province science and Technology Street, A Park, three blocks Patentee after: SHANXI SANHESHENG ENERGY SAVING ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Address before: 030000 No. 2, unit 1, building 16, Jade River Street, Wan Berlin District, Taiyuan, Shanxi, 12 Patentee before: Guo Xiquan |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 030006, Taiyuan hi tech Zone, Shanxi province science and Technology Street, A Park, three blocks Patentee after: Shanxi sanhesheng Intelligent Technology Co., Ltd Address before: 030006, Taiyuan hi tech Zone, Shanxi province science and Technology Street, A Park, three blocks Patentee before: SHANXI SANHESHENG ENERGY SAVING ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111019 |