CN105604809A - Novel blade changeover mechanism for windmill generator - Google Patents
Novel blade changeover mechanism for windmill generator Download PDFInfo
- Publication number
- CN105604809A CN105604809A CN201610172834.XA CN201610172834A CN105604809A CN 105604809 A CN105604809 A CN 105604809A CN 201610172834 A CN201610172834 A CN 201610172834A CN 105604809 A CN105604809 A CN 105604809A
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- CN
- China
- Prior art keywords
- pitch variable
- variable bearings
- blade
- inner ring
- changeover portion
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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
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- Wind Motors (AREA)
Abstract
The invention relates to a novel blade changeover mechanism for a windmill generator, particularly a connecting mechanism between a fan hub and fan blades, belonging to the technical field of windmill generator sets. The novel blade changeover mechanism comprises a transition section, wherein the upper end of the transition section is connected with blades, and the lower end is connected with the inner ring of a variable-pitch bearing; and the outer ring of the inner ring is directly connected with a hub of the windmill generator. The hub is connected with the variable-pitch bearing through uniformly distributed bolts, the variable-pitch bearing is connected with the transition section through uniformly distributed bolts, and the transition section is connected with the blades through uniformly distributed bolts. According to the novel mechanism, the transition section is added between the original bearing and blades. By arranging the transition section, one bearing can be corresponding to blades with different sizes, thereby saving the cost for replacing the fan blades. The mechanism is simple in structure, and enhances the blade replacement flexibility and timeliness.
Description
Technical field
The present invention relates to wind turbine equipment field, be specifically related to a kind of new blade changeover mechanism of wind-driven generator.
Background technology
Along with blower fan is in the extensive use of national economy every field, the performance of blower fan itself is had higher requirement. Impeller is the core component of whole blower fan, realizes the core component of gas transport and blade is blower fan, and blade, as the important component part of impeller, plays vital effect to the quality of whole fan performance.
Along with continuing to increase of the single-machine capacity of wind-driven generator, the length of blade is also in continuous increase, and in the time that the power of wind-driven generator changes, blade dimensions also can change thereupon, but in changing blade, the pitch variable bearings being connected therewith and wheel hub also will be changed. Now will redesign wheel hub, bearing size, otherwise blade cannot be installed on wheel hub. But new wheel hub, bearing redesign and will experience the processes such as structural design, intensive analysis, optimal design, consuming time long, expense is higher. And between pitch variable bearings inner ring and blade, install a changeover portion additional, and when generator power is changed, no matter be increase or dwindle, only blade be need to change just passable, and pitch variable bearings and wheel hub do not needed to change, both reduce cost, increase again ageing.
Summary of the invention
Subject matter to be solved by this invention, is exactly can only be for the blade of specific dimensions for existing same bearing, and in changing blade, pitch variable bearings and wheel hub are also compelled to do and are changed accordingly. This invention makes same bearing corresponding to the blade of different-diameter, to be convenient to dismantle impeller, time saving and energy saving, avoids fan part to cause damage.
This programme is achieved through the following technical solutions: a kind of new blade changeover mechanism of wind-driven generator, it comprises changeover portion, the upper end of changeover portion is connected with blade, lower end is connected with pitch variable bearings inner ring, pitch variable bearings outer ring is directly connected with the wheel hub of wind-driven generator, and above-mentioned pitch variable bearings inner ring and outer ring are for the central axis of pitch variable bearings, and the suffered power of blade is directly delivered to changeover portion, and then be delivered to wheel hub by pitch variable bearings, be finally delivered to generating set.
Described changeover portion is used for connecting pitch variable bearings inner ring and blade, offers the hole corresponding to different impeller diameters on changeover portion, makes the same bearing can be corresponding to the impeller of different size.
The hole of offering on above-mentioned changeover portion, can offer different holes according to the diameter of different impellers, also can according to impeller maximum gauge and minimum diameter offer strip hole, make more convenient.
The upper end of described changeover portion is crossed the 3rd connecting bolt with blade pass and is connected, and the lower end of described changeover portion is connected by the second connecting bolt with pitch variable bearings inner ring, and pitch variable bearings inner ring below adds packing ring with nut and applies pretightning force. Wheel hub adopts the first connecting bolt to be connected with pitch variable bearings outer ring, and top adds packing ring with nut and bolt is connected.
The inner ring of above-mentioned bearing adopts not concordant design with cycle surface, and the end face of inner ring and outer ring is radially at intervals, and the setting of this distance makes shaft strength more even, rotates more flexible.
Brief description of the drawings
The structural representation of Fig. 1 blade changeover mechanism;
The perforate mode of Fig. 2 changeover portion;
The motion schematic diagram of Fig. 3 blade changeover mechanism;
The bolt connection layout of Fig. 4 pitch variable bearings.
Figure number indicates: 1-wheel hub, the 2-the first connecting bolt, 3-pitch variable bearings outer ring, 4-pitch variable bearings inner ring, 5-changeover portion, the 6-the second connecting bolt, the 7-the three connecting bolt, 8-blade, the 9-the first packing ring, the 10-the first nut, the 11-the second nut, the 12-the second packing ring.
Detailed description of the invention:
For understanding better the present invention, below in conjunction with the accompanying drawing in example of the present invention, the technical scheme in the embodiment of the present invention is specifically described.
As shown in Figure 1, a kind of new blade changeover mechanism of wind-driven generator, comprise changeover portion 5, the upper end of changeover portion 5 is connected with blade 8, and lower end is connected with pitch variable bearings inner ring 4, and pitch variable bearings outer ring 3 is directly connected with the wheel hub 1 of wind-driven generator, above-mentioned pitch variable bearings inner ring 4 and outer ring 3 are for the axis of pitch variable bearings, the suffered power of blade 8 is directly delivered to changeover portion, and then has been delivered to wheel hub by pitch variable bearings, is finally delivered to generating set.
Described changeover portion 5, for connecting pitch variable bearings inner ring 4 and blade 8, is offered the hole corresponding to different impeller diameters on changeover portion 5, make the same bearing can be corresponding to the impeller of different size.
In this invention, the upper end of changeover portion 5 is connected by the 3rd connecting bolt 7 with blade 8, and the lower end of changeover portion 5 is connected by the second connecting bolt 6 with pitch variable bearings inner ring 4.
As shown in Figure 2, detail display the perforate scheme of changeover portion, what scheme one was offered is strip hole, simple and convenient easy processing, scheme two can be offered corresponding circular hole according to the diameter of different leaves on changeover portion, the circular hole of same diameter requires with one heart, the blade of realizing the corresponding different model of same pitch variable bearings with this, and scheme one is more easily processed with respect to scheme two.
As shown in Figure 3, the rotation that has rotarily driven changeover portion 5 of blade 8, and then be delivered to the inner ring 4 of pitch variable bearings, realize the synchronous rotary between pitch variable bearings inner ring 4 and blade 8. And pitch variable bearings outer ring 3 is fixed on wheel hub 1. From motion mode, can realize the transmission between blade and wheel hub completely.
As shown in Figure 4, pitch variable bearings inner ring 4 belows add packing ring 12 with nut 11 and apply pretightning force. Wheel hub 1 adopts the first connecting bolt 2 to be connected with pitch variable bearings outer ring 3, and top adds packing ring 9 with nut 10 and is connected with bolt 2.
The end face of pitch variable bearings is not concordant, and pitch variable bearings Internal and external cycle is all with bolts, and pitch variable bearings outer ring 3 is connected with wheel hub 1, and the upper end of the first nut 10 is a little less than the upper surface of bearing inner race 4; Pitch variable bearings inner ring 4 tops are connected with changeover portion, and the lower surface of bearing outer ring 3 will be lower than the lower surface of the second nut 11, and such design makes wheel rotation more flexible, easy for installation.
Embodiment described above is a part of embodiment of the present invention only, and based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, all belong to protection scope of the present invention.
Claims (5)
1. the new blade changeover mechanism of a wind-driven generator, it is characterized in that: it comprises changeover portion (5), the upper end of changeover portion (5) is connected with blade (8), lower end is connected with pitch variable bearings inner ring (4), pitch variable bearings outer ring (3) is directly connected with the wheel hub (1) of wind-driven generator, and above-mentioned pitch variable bearings inner ring and outer ring are for the central axis of pitch variable bearings.
2. a kind of new blade changeover mechanism of wind-driven generator as claimed in claim 1, it is characterized in that: described changeover portion (5) is for connecting pitch variable bearings inner ring (4) and blade (8), changeover portion is offered the hole corresponding to different impeller diameters on (5), makes the same bearing can be corresponding to the impeller of different size.
3. a kind of new blade changeover mechanism of wind-driven generator as claimed in claim 2, it is characterized in that: the hole of offering on described changeover portion (5), can offer different holes according to the diameter of different impellers, also can according to impeller maximum gauge and minimum diameter offer strip hole.
4. a kind of new blade changeover mechanism of wind-driven generator as claimed in claim 1, it is characterized in that: the upper end of described changeover portion (5) is connected by the 3rd connecting bolt (7) with blade (8), and the lower end of described changeover portion (5) is connected by the second connecting bolt (7) with pitch variable bearings inner ring (4).
5. the new blade changeover mechanism of a kind of wind-driven generator as claimed in claim 1, is characterized in that: between described pitch variable bearings inner ring (4) and pitch variable bearings outer ring (3) end face radially, be not concordant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610172834.XA CN105604809A (en) | 2016-03-24 | 2016-03-24 | Novel blade changeover mechanism for windmill generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610172834.XA CN105604809A (en) | 2016-03-24 | 2016-03-24 | Novel blade changeover mechanism for windmill generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105604809A true CN105604809A (en) | 2016-05-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610172834.XA Pending CN105604809A (en) | 2016-03-24 | 2016-03-24 | Novel blade changeover mechanism for windmill generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105604809A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165777A (en) * | 2017-07-28 | 2017-09-15 | 北京金风科创风电设备有限公司 | Become oar device and have this wind generating set who becomes oar device |
| WO2018120081A1 (en) * | 2016-12-30 | 2018-07-05 | General Electric Company | Hub-to-shaft adapter for a rotor assembly of a wind turbine and related assembly methods |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101263300A (en) * | 2005-07-05 | 2008-09-10 | 维斯塔斯风力***有限公司 | A wind turbine pitch bearing and its use |
| WO2011050806A2 (en) * | 2009-10-27 | 2011-05-05 | Vestas Wind Systems A/S | Blade hub adaptor |
| WO2015120925A1 (en) * | 2014-02-11 | 2015-08-20 | Siemens Aktiengesellschaft | Connecting element for connecting a bearing device of a rotor blade to be connected to a rotor hub of a wind turbine to a mounting flange of the rotor hub |
| CN205578190U (en) * | 2016-03-24 | 2016-09-14 | 北京稳力科技有限公司 | Aerogenerator's novel blade changeover mechanism |
-
2016
- 2016-03-24 CN CN201610172834.XA patent/CN105604809A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101263300A (en) * | 2005-07-05 | 2008-09-10 | 维斯塔斯风力***有限公司 | A wind turbine pitch bearing and its use |
| WO2011050806A2 (en) * | 2009-10-27 | 2011-05-05 | Vestas Wind Systems A/S | Blade hub adaptor |
| WO2015120925A1 (en) * | 2014-02-11 | 2015-08-20 | Siemens Aktiengesellschaft | Connecting element for connecting a bearing device of a rotor blade to be connected to a rotor hub of a wind turbine to a mounting flange of the rotor hub |
| CN205578190U (en) * | 2016-03-24 | 2016-09-14 | 北京稳力科技有限公司 | Aerogenerator's novel blade changeover mechanism |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018120081A1 (en) * | 2016-12-30 | 2018-07-05 | General Electric Company | Hub-to-shaft adapter for a rotor assembly of a wind turbine and related assembly methods |
| CN110337541A (en) * | 2016-12-30 | 2019-10-15 | 通用电气公司 | Hub-adapter axis of rotor assembly for wind turbine and related assemble method |
| CN107165777A (en) * | 2017-07-28 | 2017-09-15 | 北京金风科创风电设备有限公司 | Become oar device and have this wind generating set who becomes oar device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160525 |
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| WD01 | Invention patent application deemed withdrawn after publication |