CN203685866U - Low-cost variable-pitch bearing of wind generation set and wind generation set adopting same - Google Patents
Low-cost variable-pitch bearing of wind generation set and wind generation set adopting same Download PDFInfo
- Publication number
- CN203685866U CN203685866U CN201420004981.2U CN201420004981U CN203685866U CN 203685866 U CN203685866 U CN 203685866U CN 201420004981 U CN201420004981 U CN 201420004981U CN 203685866 U CN203685866 U CN 203685866U
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- variable
- pitch variable
- variable bearings
- pitch bearing
- pitch
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- 238000009826 distribution Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010923 batch production Methods 0.000 abstract description 3
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
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- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a low-cost variable-pitch bearing of a wind generation set and the wind generation set adopting the low-cost variable-pitch bearing. The variable-pitch bearing comprises a variable-pitch bearing outer ring and a variable-pitch bearing inner ring which can be rotationally connected with each other, as well as inner teeth arranged in the ring surface of the variable-pitch bearing inner ring, wherein the inner teeth are local inner teeth, namely the distribution range of the inner teeth is one section of the ring surface of the variable-pitch bearing inner ring, and the inner teeth on the section are always kept engaged with a variable-pitch drive during pitch varying. According to the variable-pitch bearing, the processing cost and the medium-frequency quenching cost are reduced. According to the wind generation set adopting the variable-pitch bearing, the production cost of the variable-pitch bearing can be reduced to the maximum extent while the pitch is normally varied. The variable-pitch bearing is a best selection for batch production of wind generation sets.
Description
Technical field
The utility model relates to wind power technology field, particularly relates to a kind of low cost wind-powered electricity generation unit pitch variable bearings and applies its wind-powered electricity generation unit.
Background technique
Along with MW class wind turbine group is installed on a large scale, each wind power generating set manufacturer is also in the problem of considering to reduce unit cost.
Pitch variable bearings is the vitals that connects blade and wheel hub, in the time that external environment wind speed changes, master control system becomes oar drive motor by control and drives pitch variable bearings inner ring, realize relatively rotating of pitch variable bearings inner ring and outer ring, finally reach the object that blade subtended angle changes with wind speed variation thereupon, finally realize the maximization of wind power generating set generated output.
Pitch variable bearings is as the vitals that connects blade and wheel hub, and the decline of its cost has significant effect to the decline of whole unit cost.
Model utility content
The purpose of this utility model is to provide a kind of low cost wind-powered electricity generation unit pitch variable bearings, can be at the cost of production that guarantees to reduce to greatest extent in wind power generating set normally becomes oar pitch variable bearings.
For achieving the above object, the utility model adopts following technological scheme:
A kind of low cost wind-powered electricity generation unit pitch variable bearings, comprise pitch variable bearings outer ring, the pitch variable bearings inner ring that can mutually be rotationally connected, and be arranged at the internal tooth of pitch variable bearings inner ring anchor ring inside, described internal tooth is local internal tooth, the distribution that is described internal tooth is a section on pitch variable bearings inner ring anchor ring, and while making to become oar, this section of upper internal tooth arranging remains and engage with the driving of change oar.
Further, the described corresponding central angle of local internal tooth distributing on pitch variable bearings inner ring anchor ring is at least 90 °.
Further, the described corresponding central angle of local internal tooth distributing on pitch variable bearings inner ring anchor ring is 120 °.
Another object of the present utility model is to provide the wind-powered electricity generation unit that adopts above-mentioned pitch variable bearings.
Owing to adopting technique scheme, the utility model at least has the following advantages:
Owing to adopting local tooth pitch variable bearings, processing cost that the utility model is not only less, also reduce the cost of mid frequency induction hardening, adopting the wind power generating set of this pitch variable bearings can, at the cost of production that guarantees to reduce to greatest extent in wind power generating set normally becomes oar pitch variable bearings, be the optimal selection of batch production wind power generating set.
Accompanying drawing explanation
Above-mentioned is only the general introduction of technical solutions of the utility model, and in order to better understand technological means of the present utility model, below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Fig. 1 is low cost wind-powered electricity generation unit pitch variable bearings structural representation of the present utility model.
Fig. 2 is low cost wind-powered electricity generation unit pitch variable bearings scheme of installation of the present utility model.
Embodiment
As shown in Figure 1, 2, the utility model discloses a kind of low cost wind-powered electricity generation unit pitch variable bearings 1, be arranged on the wheel hub 2 of wind-powered electricity generation unit, comprise pitch variable bearings outer ring 1-1, the pitch variable bearings inner ring 1-2 that can mutually be rotationally connected, and be arranged at the internal tooth 1-3 of pitch variable bearings inner ring anchor ring inside, described internal tooth 1-3 is local internal tooth, and the distribution of described internal tooth 1-3 is a section on pitch variable bearings inner ring 1-2 anchor ring, and this section of upper internal tooth 1-3 arranging drives 3 to keep engaging with change oar.
Due to the feature of the pneumatic property of blade shape, the process that blade rotates to maximum subtended angle from minimum subtended angle only needs the angle of half-twist, take into account the consideration of cost of production, therefore, the corresponding central angle of local internal tooth 1-3 distributing on pitch variable bearings inner ring anchor ring is at least 90 °, also can suitably increase and be set to other numerical value, preferably be set to 120 °.
In the time manufacturing and local tooth pitch variable bearings is installed, certain assurance wind power generating set (being up to feathering angle from subtended angle) in the time becoming oar can guarantee that the internal tooth 1-3 of pitch variable bearings 1 drives 3 to keep engaging with becoming oar all the time, to guarantee that wind-powered electricity generation unit energy becomes oar normally.
Owing to having adopted above technological scheme, the utility model adopt the pitch variable bearings of local internal tooth form not only less processing cost, also reduce the cost of mid frequency induction hardening, adopting the wind power generating set of this pitch variable bearings can, at the cost of production that guarantees to reduce to greatest extent in wind power generating set normally becomes oar pitch variable bearings, be the optimal selection of batch production wind power generating set.
The above; it is only preferred embodiment of the present utility model; not the utility model is done to any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection domain of the present utility model.
Claims (4)
1. a low cost wind-powered electricity generation unit pitch variable bearings, comprise pitch variable bearings outer ring, the pitch variable bearings inner ring that can mutually be rotationally connected, and be arranged at the internal tooth of pitch variable bearings inner ring anchor ring inside, it is characterized in that, described internal tooth is local internal tooth, the distribution that is described internal tooth is a section on pitch variable bearings inner ring anchor ring, and while making to become oar, this section of upper internal tooth arranging remains and engage with the driving of change oar.
2. low cost wind-powered electricity generation unit pitch variable bearings according to claim 1, is characterized in that, the described corresponding central angle of local internal tooth distributing on pitch variable bearings inner ring anchor ring is at least 90 °.
3. low cost wind-powered electricity generation unit pitch variable bearings according to claim 2, is characterized in that, the described corresponding central angle of local internal tooth distributing on pitch variable bearings inner ring anchor ring is 120 °.
4. a wind-powered electricity generation unit, is characterized in that, adopts the low cost wind-powered electricity generation unit pitch variable bearings described in claim 1-3 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420004981.2U CN203685866U (en) | 2014-01-03 | 2014-01-03 | Low-cost variable-pitch bearing of wind generation set and wind generation set adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420004981.2U CN203685866U (en) | 2014-01-03 | 2014-01-03 | Low-cost variable-pitch bearing of wind generation set and wind generation set adopting same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203685866U true CN203685866U (en) | 2014-07-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420004981.2U Expired - Lifetime CN203685866U (en) | 2014-01-03 | 2014-01-03 | Low-cost variable-pitch bearing of wind generation set and wind generation set adopting same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203685866U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242499A (en) * | 2019-07-17 | 2019-09-17 | 北京金风科创风电设备有限公司 | Variable pitch drive module, impeller system, wind generating set and transportation method |
| CN111140432A (en) * | 2018-11-05 | 2020-05-12 | 中国船舶重工集团海装风电股份有限公司 | Wind turbine generator system variable pitch system and wind turbine generator system |
-
2014
- 2014-01-03 CN CN201420004981.2U patent/CN203685866U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140432A (en) * | 2018-11-05 | 2020-05-12 | 中国船舶重工集团海装风电股份有限公司 | Wind turbine generator system variable pitch system and wind turbine generator system |
| CN111140432B (en) * | 2018-11-05 | 2021-10-15 | 中国船舶重工集团海装风电股份有限公司 | Wind turbine generator system variable pitch system and wind turbine generator system |
| CN110242499A (en) * | 2019-07-17 | 2019-09-17 | 北京金风科创风电设备有限公司 | Variable pitch drive module, impeller system, wind generating set and transportation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |