CN201747525U - Pneumatic propeller-change braking system of wind driven generator - Google Patents
Pneumatic propeller-change braking system of wind driven generator Download PDFInfo
- Publication number
- CN201747525U CN201747525U CN201020249951XU CN201020249951U CN201747525U CN 201747525 U CN201747525 U CN 201747525U CN 201020249951X U CN201020249951X U CN 201020249951XU CN 201020249951 U CN201020249951 U CN 201020249951U CN 201747525 U CN201747525 U CN 201747525U
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- China
- Prior art keywords
- generator
- braking
- braking system
- change oar
- oar
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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 relates to a pneumatic propeller-change braking system of a wind driven generator, which comprises a tower rod, a yawing mechanism located on the tower rod, a generator and a fan blade. The yawing mechanism is connected with the generator through a connecting body; the fan blade is rotatably installed on a hub of the generator through a fan blade shaft; the hub is connected with a rotator; the pneumatic propeller-change braking system is arranged inside the connecting body; the propeller-change mechanism comprises a propeller-change gas disc, a propeller-change transmission mechanism and a universal-joint propeller-change mechanism; the universal-joint propeller-change mechanism is connected with the fan blade shaft; the braking mechanism comprises a braking drum fixedly installed on the generator rotator and a braking belt coated at the outer periphery of the braking drum; one end of the braking belt is fixed and the other end is connected with the braking gas disc. The pneumatic propeller-change braking system with rapid response speed is suitable for harsh environment, is not easily affected by the environment, and is free from wet, dust, vibration and too-cold/hot environment; furthermore, the transmission mechanism with simple transmission, so the fault rate is greatly reduced, and the generation safety of the generator is ensured.
Description
Technical field
The utility model relates to a kind of fan blade revolution speed control device of wind-driven generator, and the particularly a kind of fan blade that can control wind-driven generator is according to wind direction and wind-force is adjusted or the air pressure pitch-controlled system of Emergency braking.
Background technique
Along with constant development of economy, people are increasing to the demand of the energy, the storage level of non-renewable resources is subjected to serious threat, thereby people turn to renewable resources with sight gradually, wind energy is as a kind of renewable energy sources of cleaning, more and more be subjected to the attention of countries in the world, thereby impel constantly bringing forth new ideas of wind-driven generator, the wind-power generator maximal important components is directly to contact with wind energy, for generator provides the fan blade of power,, guarantee the safety and the working life of wind-driven generator in order better to adapt to various wind directions, existing wind-driven generator is controlled fan blade by hydraulic system mostly, hydraulic control system is subjected to Temperature Influence easily, is not suitable for cold or overheated environment, and working life is lower, faults such as leakage of oil often occur, can not guarantee the safety of wind-driven generator.
The model utility content
The purpose of this utility model is at the deficiencies in the prior art, provides a kind of driving mechanism to simplify the pneumatic change oar of the wind-driven generator that rate of fault is low braking system.
The technical solution of the utility model is: the pneumatic change oar of a kind of wind-driven generator braking system, comprise the tower bar, be positioned at the Yawing mechanism on the tower bar, generator and fan blade, Yawing mechanism joins by connecting body and generator, fan blade is rotatably mounted on the wheel hub of generator by blade shaft, wheel hub and rotor join, and described connecting body inside is provided with pneumatic change oar braking system, and described pneumatic change oar braking system comprises blade pitch device and the arrestment mechanism that joins with source of the gas; Described blade pitch device comprises change oar gas dish, becomes oar driving mechanism and universal joint blade pitch device, universal joint blade pitch device and blade shaft join, arrestment mechanism comprises the clamping strap that is installed in the brake drum on the generator amature and is wrapped in the brake drum periphery, one end of described clamping strap is fixed, and the other end joins with braking gas dish.
Preferably: described change oar driving mechanism is provided with the connecting rod that joins with the pto that becomes oar gas dish, the middle part of connecting rod is installed on the connecting body by bearing pin, the other end and pull bar join, and the rotor that pull bar passes generator stretches in the wheel hub and by universal joint blade pitch device and blade shaft and joins.
Preferably: described connecting rod joins by universal joint and pull bar.
Preferably: described pull bar is provided with two change oar springs, and change oar spring is positioned at wheel hub and is set on the pull bar, and another end that becomes the oar spring is installed on the connecting body, and the other end is installed on the pull bar.
Preferably: described arrestment mechanism is provided with brake spring, and an end of brake spring is installed on the connecting body, and the other end is installed on the clamping strap.
Preferably: described source of the gas is positioned at ground, joins by pipeline and change oar gas dish and braking gas dish, and pipeline is provided with
Solenoid valve, solenoid valve and signal controller join, and signal controller and anemoscope, the voltage transducer that is positioned at power generation circuit join.
Preferably: described connecting body is provided with the braking sensor that detects braking gas dish motion state, and braking sensor and signal controller join.
Preferably: described universal joint blade pitch device comprises the synchronous disk that is positioned at the pull bar end, and synchronous disk joins by linkage mechanism and blade shaft.
The beneficial effects of the utility model are: the utility model adopts pneumatic change oar braking system, reaction fast, be applicable to rugged environment, be not subject to the influence of environment, be not afraid of humidity, dust, vibration and cross cold overheated environment, in addition, the driving mechanism transmission is simple, rate of fault is reduced greatly, guaranteed the generating safety of generator.
Description of drawings
Fig. 1 is this practical structural representation
Structural representation when Fig. 2 surpasses rated speed for the utility model generator
Fig. 3 is the sectional view of Fig. 2 A-A
Fig. 4 is the structural representation of the utility model universal joint blade pitch device
Embodiment
Below in conjunction with description of drawings the specific embodiment of the present invention:
The pneumatic change oar of a kind of wind-driven generator braking system, comprise tower bar 1, be positioned at the Yawing mechanism 2 on the tower bar 1, generator 3 and fan blade 4, Yawing mechanism 2 joins by connecting body 5 and generator 3, three fan blades 4 are rotatably mounted on the wheel hub 7 of generator 3 by blade shaft 6, wheel hub 7 joins with rotor 8, and described connecting body 5 inside are provided with pneumatic change oar braking system, and described pneumatic change oar braking system comprises blade pitch device and the arrestment mechanism that joins with source of the gas 9; Described blade pitch device comprises change oar gas dish 10, become oar driving mechanism and universal joint blade pitch device, universal joint blade pitch device and blade shaft 6 join, become oar gas dish 10 and provide power by source of the gas 9, by connecting rod 14 push-and-pull pull bars 15, drive wheel hub inner gimbal blade pitch device by pull bar 15, realize that generator becomes oar, arrestment mechanism comprises brake drum 11 that is installed on the generator amature 8 and the clamping strap 12 that is wrapped in brake drum 11 peripheries, one end of described clamping strap 12 is fixed, the other end joins with braking gas dish 13, when arrestment mechanism was used for the generator overspeed, brake reduced rotating speed.Become the oar driving mechanism and be provided with the connecting rod 14 that joins with the pto that becomes oar gas dish 10, connecting rod 14 utilizes lever principle to reduce assembly space length, and can reduce the change oar and need exert oneself, the middle part of connecting rod 14 is installed on the connecting body 5 by bearing pin, the other end and pull bar 15 join, and the rotor 8 that pull bar 15 passes generator stretches in the wheel hub 7 and by universal joint blade pitch device and blade shaft 6 and joins.Connecting rod 14 joins by universal joint 16 and pull bar 15, and universal joint 16 can be offset the pendulum power of connecting rod 14.Pull bar 15 is provided with two change oar springs 17, change oar spring is positioned at wheel hub 7 and is set on the pull bar 15, another end that becomes oar spring 17 is installed on the connecting body 5, the other end is installed on the pull bar 15, becoming the oar spring is when source of the gas is closed, assist to become oar gas dish 10 push rods and reset, realize becoming oar.Arrestment mechanism is provided with brake spring 18, and an end of brake spring 18 is installed on the connecting body 5, and the other end is installed on the clamping strap 12.Described source of the gas 9 is positioned at ground, by pipeline 19 with become oar gas dish 10 and braking gas dish 18 joins, pipeline 19 is provided with solenoid valve, solenoid valve and signal controller join, signal controller and anemoscope, the voltage transducer that is positioned at power generation circuit join.Described connecting body 5 is provided with the braking sensor 20 that detects braking gas dish 13 motion states, and braking sensor 20 joins with signal controller.Described universal joint blade pitch device comprises the synchronous disk 21 that is positioned at the pull bar end, and synchronous disk 21 joins by linkage mechanism 22 and blade shaft 6.
During work: when generator normally moves:
1. pitch-controlled system: become oar gas dish 10 and be in inflated condition (pull bar stretches out) and become oar spring 17 and be in compressive state (as shown in Figure 1)
2. braking system: braking gas dish 13 is in inflated condition (pull bar stretches out) brake spring 18 and also is in compressive state.Between brake drum 11 and the clamping strap 12 enough spaces are arranged, guarantee that generator runs well.
When generator surpasses rated speed (as shown in Figure 2), voltage raises, voltage transducer is given signal of controller, controller control source of the gas closed electromagnetic valve makes to become oar gas dish 10 exhausts (pull bar withdrawal), becomes oar spring 17 and promotes pull bar 15, drive the universal joint blade pitch device, make fan blade 4 change angle, realize becoming oar, rotating speed reduces; Braking gas dish 2 exhausts (pull bar withdrawal) brake spring 18 flicks, and leans on the pressure of brake spring 18 that clamping strap 12 tightly is enclosed on the brake drum 11, realizes brake.
When needing after the brake to work again, from the signal of anemoscope to controller, the source of the gas solenoid valve is connected in controller control, 13 inflations (pull bar stretches out) of braking gas dish, promote brake spring 18 to compression position, remove skidding, give controller signals by braking sensor 20, controller is given and is become 10 1 signals of oar gas dish, make to become 10 inflations (pull bar stretches out) of oar gas dish, pulling pull bar 15 drives the universal joint blade pitch device, make fan blade 4 change normal working into, this moment, generator began to run well.
If when running into the inefficacy of urgency or control signal, the source of the gas solenoid valve is in closed condition, automatic vent, arrestment mechanism is in braking state, and blade pitch device is in and becomes the oar state, and generator can stop operating.(native system controller with single-chip microcomputer or PLC).
Claims (8)
1. the pneumatic change oar of wind-driven generator braking system, comprise the tower bar, be positioned at the Yawing mechanism on the tower bar, generator and fan blade, Yawing mechanism joins by connecting body and generator, fan blade is rotatably mounted on the wheel hub of generator by blade shaft, wheel hub and rotor join, and it is characterized in that: described connecting body inside is provided with pneumatic change oar braking system, and described pneumatic change oar braking system comprises blade pitch device and the arrestment mechanism that joins with source of the gas; Described blade pitch device comprises change oar gas dish, becomes oar driving mechanism and universal joint blade pitch device, universal joint blade pitch device and blade shaft join, arrestment mechanism comprises the clamping strap that is installed in the brake drum on the generator amature and is wrapped in the brake drum periphery, one end of described clamping strap is fixed, and the other end joins with braking gas dish.
2. the pneumatic change oar of wind-driven generator as claimed in claim 1 braking system, it is characterized in that: described change oar driving mechanism is provided with the connecting rod that joins with the pto that becomes oar gas dish, the middle part of connecting rod is installed on the connecting body by bearing pin, the other end and pull bar join, and the rotor that pull bar passes generator stretches in the wheel hub and by universal joint blade pitch device and blade shaft and joins.
3. the pneumatic change oar of wind-driven generator as claimed in claim 2 braking system, it is characterized in that: described connecting rod joins by universal joint and pull bar.
4. the pneumatic change oar of wind-driven generator as claimed in claim 2 braking system, it is characterized in that: described pull bar is provided with two change oar springs, change oar spring is positioned at wheel hub and is set on the pull bar, another end that becomes the oar spring is installed on the connecting body, and the other end is installed on the pull bar.
5. the pneumatic change oar of wind-driven generator as claimed in claim 1 braking system, it is characterized in that: described arrestment mechanism is provided with brake spring, and an end of brake spring is installed on the connecting body, and the other end is installed on the clamping strap.
6. the pneumatic change oar of wind-driven generator as claimed in claim 1 braking system, it is characterized in that: described source of the gas is positioned at ground, join by pipeline and change oar gas dish and braking gas dish, pipeline is provided with solenoid valve, solenoid valve and signal controller join, and signal controller and anemoscope, the voltage transducer that is positioned at power generation circuit join.
7. the pneumatic change oar of wind-driven generator as claimed in claim 6 braking system is characterized in that: described connecting body is provided with the braking sensor that detects braking gas dish motion state, and braking sensor and signal controller join.
8. the pneumatic change oar of wind-driven generator as claimed in claim 2 braking system, it is characterized in that: described universal joint blade pitch device comprises the synchronous disk that is positioned at the pull bar end, and synchronous disk joins by linkage mechanism and blade shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020249951XU CN201747525U (en) | 2010-07-07 | 2010-07-07 | Pneumatic propeller-change braking system of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020249951XU CN201747525U (en) | 2010-07-07 | 2010-07-07 | Pneumatic propeller-change braking system of wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747525U true CN201747525U (en) | 2011-02-16 |
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ID=43582204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020249951XU Expired - Fee Related CN201747525U (en) | 2010-07-07 | 2010-07-07 | Pneumatic propeller-change braking system of wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747525U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434390A (en) * | 2011-12-12 | 2012-05-02 | 济南轨道交通装备有限责任公司 | Blade brake device |
| CN110762213A (en) * | 2019-10-31 | 2020-02-07 | 吴奕学 | Sealing rotating structure at rotating shaft in wind power generation equipment |
-
2010
- 2010-07-07 CN CN201020249951XU patent/CN201747525U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434390A (en) * | 2011-12-12 | 2012-05-02 | 济南轨道交通装备有限责任公司 | Blade brake device |
| CN102434390B (en) * | 2011-12-12 | 2013-09-25 | 济南轨道交通装备有限责任公司 | Blade brake device |
| CN110762213A (en) * | 2019-10-31 | 2020-02-07 | 吴奕学 | Sealing rotating structure at rotating shaft in wind power generation equipment |
| CN110762213B (en) * | 2019-10-31 | 2020-07-14 | 中电投新疆能源化工集团哈密有限公司 | Sealing rotating structure at rotating shaft in wind power generation equipment |
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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: 20110216 Termination date: 20180707 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |