CN204024910U - A kind of wind generator moment of torsion amplitude limit vane change device - Google Patents
A kind of wind generator moment of torsion amplitude limit vane change device Download PDFInfo
- Publication number
- CN204024910U CN204024910U CN201420338722.3U CN201420338722U CN204024910U CN 204024910 U CN204024910 U CN 204024910U CN 201420338722 U CN201420338722 U CN 201420338722U CN 204024910 U CN204024910 U CN 204024910U
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- China
- Prior art keywords
- main shaft
- wheel hub
- blade wheel
- blade
- end flanges
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
Abstract
The utility model belongs to middle-size and small-size wind-powered electricity generation field, discloses a kind of wind generator moment of torsion amplitude limit vane change device.Comprise blade, main shaft, generator, disc brake, break chuck, also comprise blade wheel hub, described blades installation, on blade wheel hub, is provided with rolling bearing between blade wheel hub and main shaft, makes can produce relative angle displacement between both; Main shaft is provided with main shaft end flanges away from one end of disc brake, described main shaft is provided with torque spring, one end of torque spring is connected with main shaft end flanges, the other end of torque spring is connected with blade wheel hub, be provided with between main shaft end flanges and blade wheel hub and become oar pull bar, main shaft end flanges is connected with blade wheel hub by becoming oar pull bar.The utility model structure is simple, ensures that blower fan works in the speed range of safety, realizes becoming oar action, do not need additionally to increase rotary component quality, have very high practicability in the mode of torque sensitivity.
Description
Technical field
The utility model belongs to middle-size and small-size wind-powered electricity generation field, has particularly related to a kind of wind generator moment of torsion amplitude limit vane change device.
Background technique
The pitch-controlled system of traditional medium and small wind generator is divided into centrifugal mechanical to become oar and the large class of electric variable pitch two with control loop usually.
Centrifuging variable pitch system is the mechanical device that a kind of centrifugal device by being arranged on root of blade makes blade vane angle and changes after exceeding the rotating speed of setting, belongs to rotating speed sensory system, small wind unit is widely used.The driving power changing blade vane angle due to centrifugal device comes from centrifugal force, and the representation of centrifugal force is:
F=mw
2r
Wherein, F: centrifugal force m: quality w: angular velocity r: barycenter distance
So in order to obtain enough centrifugal force, just need to increase gyrating mass m and barycenter radius r, this transient equiliblium for solid of rotation is checked and is added difficulty.
In addition, for the constant speed wind generator using asynchronous motor, because its rotation speed change scope is very limited, centrifugal variation paddle device is obviously difficult to play a role, and moment of torsion amplitude limiter is just more applicable.Electric variable pitch relies on a set of fan condition measure loop and carrys out adjusting vane vane angle, and the intervention that must rely on cabin electrical system could realize, and this proposes requirement to the ability of the resistance to adverse weather condition of wind power equipment, adds system complexity.
Summary of the invention
The defect that the utility model exists for prior art, provides a kind of structure simple, does not need additionally to increase rotary component quality, realizes becoming oar action, safe and reliable wind generator moment of torsion amplitude limit vane change device in the mode of torque sensitivity.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
A kind of wind generator moment of torsion amplitude limit vane change device, comprise blade, main shaft, generator, the disc brake being arranged on main shaft one end, the break chuck that matches with disc brake, also comprise blade wheel hub, described blades installation is on blade wheel hub, be provided with rolling bearing between described blade wheel hub and main shaft, make can produce relative angle displacement between both; Described main shaft is provided with main shaft end flanges away from one end of disc brake, described main shaft is provided with torque spring, one end of torque spring is connected with main shaft end flanges, the other end of torque spring is connected with blade wheel hub, be provided with between described main shaft end flanges and blade wheel hub and become oar pull bar, main shaft end flanges is connected with blade wheel hub by becoming oar pull bar.When there is Relative angular displacement between blade wheel hub and main shaft, blade vane angle, to being tending towards the change of feathering direction, can realize the automatic adjustment of power.
As preferably, be provided with damper between described blade wheel hub and main shaft, one end of described damper is connected with main shaft, and opposite side is connected with blade wheel hub.In order to prevent the vibration because spring assembly brings, between wheel hub and main shaft, damper being housed, can effectively suppressing to become the vibration in oar adjustment process.
As preferably, described blade wheel hub is provided with blade root flange, and described blade is installed on blade wheel hub by blade root flange.
As preferably, described change oar pull bar is provided with joint shaft bearing, the particular location becoming oar pull bar is rationally set as required, ensures its stability be connected with main shaft end flanges, blade wheel hub.
Rolling bearing and torque spring two groups of parts are added between the wheel hub of the utility model patent and main shaft, the prefastening torque of setting torque spring equals the rated torque of generator, like this, below rated wind speed, wheel hub is less than rated torque to the moment of torsion of main shaft transmission, wheel hub drives main shaft to rotate together, and when wind speed is greater than rated wind speed time, wheel hub has exceeded the prefastening torque of torque spring to the moment of torsion of main shaft transmission, hub relative produces angle of swing displacement in main shaft, blade is made to be tending towards feathering, this effectively will change attack angle of blade, wheel speed is reduced, form effective negative feedback mechanism, limit the output power of blower fan, blower fan is operated in safe speed range.
The utility model, owing to have employed above technological scheme, has significant technique effect:
The utility model structure is simple, ensures that blower fan works in the speed range of safety, realizes becoming oar action, do not need additionally to increase rotary component quality, have very high practicability in the mode of torque sensitivity.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is described in further detail with embodiment below in conjunction with accompanying drawing 1:
embodiment 1
A kind of wind generator moment of torsion amplitude limit vane change device, as shown in Figure 1, comprise blade 1, main shaft 2, generator 3, the disc brake 4 being arranged on main shaft 2 one end, the break chuck 5 that matches with disc brake 4, also comprise blade wheel hub 6, blade wheel hub 6 is provided with blade root flange 61, described blade 1 is installed on blade wheel hub 6 by blade root flange 61, is provided with rolling bearing 7 between described blade wheel hub 6 and main shaft 2; Also be provided with damper 71 between blade wheel hub 6 and main shaft 2, one end of described damper 71 is connected with main shaft 2, and opposite side is connected with blade wheel hub 6.One end away from disc brake 4 on described main shaft 2 is provided with main shaft end flanges 8, described main shaft 2 is provided with torque spring 9, torque spring 9 can realize the rated torque that prefastening torque is more than or equal to generator, one end of torque spring 9 is connected with main shaft end flanges 8, the other end of torque spring 9 is connected with blade wheel hub 6, be provided with between described main shaft end flanges 8 and blade wheel hub 6 and become oar pull bar 10, become on oar pull bar 10 and be provided with joint shaft bearing 11, main shaft end flanges 8 is connected with blade wheel hub 6 by becoming oar pull bar 10.When there is Relative angular displacement between blade wheel hub 6 and main shaft 2, blade vane angle, to being tending towards the change of feathering direction, can realize the automatic adjustment of power, ensures that blower fan works in the speed range of safety.
Rolling bearing and torque spring two groups of parts are added between the wheel hub of the utility model patent and main shaft, the prefastening torque of setting torque spring equals the rated torque of generator, like this, below rated wind speed, blade wheel hub is less than rated torque to the moment of torsion of main shaft transmission, blade wheel hub drives main shaft to rotate together, and when wind speed is greater than rated wind speed time, blade wheel hub has exceeded the prefastening torque of torque spring to the moment of torsion of main shaft transmission, blade wheel hub produces angle of swing displacement relative to main shaft, blade is made to be tending towards feathering, this effectively will change attack angle of blade, wheel speed is reduced, form effective negative feedback mechanism, limit the output power of blower fan, blower fan is operated in safe speed range.
The utility model structure is simple, ensures that blower fan works in the speed range of safety, realizes becoming oar action, do not need additionally to increase rotary component quality, have very high practicability in the mode of torque sensitivity.
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (4)
1. a wind generator moment of torsion amplitude limit vane change device, comprise blade (1), main shaft (2), generator (3), the disc brake (4) being arranged on main shaft (2) one end, the break chuck (5) that matches with disc brake (4), it is characterized in that: also comprise blade wheel hub (6), described blade (1) is arranged on blade wheel hub (6), is provided with rolling bearing (7) between described blade wheel hub (6) and main shaft (2); Described main shaft (2) is provided with main shaft end flanges (8) away from one end of disc brake (4), described main shaft (2) is provided with torque spring (9), one end of torque spring (9) is connected with main shaft end flanges (8), the other end of torque spring (9) is connected with blade wheel hub (6), be provided with between described main shaft end flanges (8) and blade wheel hub (6) and become oar pull bar (10), main shaft end flanges (8) is connected with blade wheel hub (6) by becoming oar pull bar (10).
2. wind generator moment of torsion amplitude limit vane change device according to claim 1, it is characterized in that: between described blade wheel hub (6) and main shaft (2), be provided with damper (71), one end of described damper (71) is connected with main shaft (2), and opposite side is connected with blade wheel hub (6).
3. wind generator moment of torsion amplitude limit vane change device according to claim 1, is characterized in that: described blade wheel hub (6) is provided with blade root flange (61), and described blade (1) is installed on blade wheel hub (6) by blade root flange (61).
4. wind generator moment of torsion amplitude limit vane change device according to claim 1, is characterized in that: described change oar pull bar (10) is provided with joint shaft bearing (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420338722.3U CN204024910U (en) | 2014-06-24 | 2014-06-24 | A kind of wind generator moment of torsion amplitude limit vane change device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420338722.3U CN204024910U (en) | 2014-06-24 | 2014-06-24 | A kind of wind generator moment of torsion amplitude limit vane change device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204024910U true CN204024910U (en) | 2014-12-17 |
Family
ID=52064783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420338722.3U Expired - Fee Related CN204024910U (en) | 2014-06-24 | 2014-06-24 | A kind of wind generator moment of torsion amplitude limit vane change device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204024910U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487573A (en) * | 2019-08-16 | 2019-11-22 | 太原重工股份有限公司 | Paddle change system of wind turbines composite test device and test method |
| US10570963B2 (en) | 2016-03-24 | 2020-02-25 | Goodrich Actuation Systems Limited | Torque limiting device |
-
2014
- 2014-06-24 CN CN201420338722.3U patent/CN204024910U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10570963B2 (en) | 2016-03-24 | 2020-02-25 | Goodrich Actuation Systems Limited | Torque limiting device |
| CN110487573A (en) * | 2019-08-16 | 2019-11-22 | 太原重工股份有限公司 | Paddle change system of wind turbines composite test device and test method |
| CN110487573B (en) * | 2019-08-16 | 2021-06-01 | 太原重工股份有限公司 | Composite test device and test method for variable pitch system of wind turbine generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20150624 |
|
| EXPY | Termination of patent right or utility model |