CN105715460A - Wind driven generator with overspeed preventing performance - Google Patents
Wind driven generator with overspeed preventing performance Download PDFInfo
- Publication number
- CN105715460A CN105715460A CN201610238195.2A CN201610238195A CN105715460A CN 105715460 A CN105715460 A CN 105715460A CN 201610238195 A CN201610238195 A CN 201610238195A CN 105715460 A CN105715460 A CN 105715460A
- Authority
- CN
- China
- Prior art keywords
- feather
- driven generator
- wind
- gear box
- containment vessel
- Prior art date
- 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.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 210000003746 feather Anatomy 0.000 claims description 30
- 230000005291 magnetic effect Effects 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000006698 induction Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/04—Automatic control; Regulation
- F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/101—Purpose of the control system to control rotational speed (n)
- F05B2270/1011—Purpose of the control system to control rotational speed (n) to prevent overspeed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/32—Wind speeds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/60—Control system actuates through
- F05B2270/602—Control system actuates through electrical actuators
-
- 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 invention relates to a wind driven generator with overspeed preventing performance. The wind driven generator comprises a fan propeller, a transmission shaft, a gearbox and a generator, wherein the fan propeller is installed on the left end of the transmission shaft, the right end of the transmission shaft is connected with the left input end of the gearbox, and the right output end of the gearbox is connected with the generator; a CPU controller, a speed measuring mechanism and a variable pitch motor M are further arranged on the wind driven generator, and the variable pitch motor M is controlled to operate by the CPU controller according to an output signal of the speed measuring mechanism. The wind driven generator has the advantages of simple structure, stability in operation, convenience in maintenance, high sensing sensitivity of a variable pitch speed measuring signal, timeliness and accuracy in variable pitch control and no contact abrasion of components of an overspeed preventing device, and the service life of equipment can be prolonged.
Description
Technical field
The present invention relates to technical field of wind power generation, especially a kind of wind-driven generator with anti-hypervelocity performance.
Background technology
Wind-power electricity generation is to produce turning moment by wind drive blade, makes wind energy become mechanical energy effect on the driving shaft, drives electrical power generators again through change speed gear box and high speed shaft.When wind speed is higher than the rated wind speed of design objective, because of blade own material limited strength, wind turbine impeller rotating speed must within the rated speed of design objective；When wind-force exceeds the speed limit, it is necessary to take the brake of urgent blower fan and feathering to regulate, it is ensured that wind energy conversion system equipment safety.In prior art, the anti-hypervelocity of wind energy conversion system is mainly variable pitch control, or deliberate speed loss controls or mechanical brake measure.When feather brakes starts, the braking-distance figures mostly provided according to anemobiagraph, generator speed or output, blower fan is carried out speed-limiting protection.In view of wind-force comes and go, and due to blower fan structure complexity and the circumscribed restriction of measuring method, it is impossible to blower fan is realized speed-limiting protection promptly and accurately.In prior art, speed limit directly initiates hydraulic pump mainly through flyball centrifugal force or triggers clutch, increases or reduces the quantity of connection in series-parallel electromotor, its blower fan is carried out speed-limiting protection.Its drawback is: 1. this control mode is contacted with contact switch base part by flyball rotation under centrifugal force, and wind speed variable signal is exported change pitch actuator by contact switch base part.Owing to the size and Orientation of wind speed change is unstable, and the frequency of this instantaneous variation and amplitude are also very big, and flyball contacts generation rubbing action with the parts existence in device, makes blower fan speed limit regulate not accurate enough, and precision is low；2. the parts started in device very easily wear and tear because of friction, can reduce the life-span of Fan Equipment, add blower fan maintenance workload.
Summary of the invention
The technical problem to be solved is to provide a kind of wind-driven generator with anti-hypervelocity performance, it is high that it should have change pitch tachometer signal induction sensitivity, variable pitch control is promptly and accurately, the contactless abrasion of overspeed preventer parts, extension device service life, reduce the feature of wind energy conversion system maintenance cost.
For solving above-mentioned technical problem, the technical solution used in the present invention is: a kind of wind-driven generator with anti-hypervelocity performance, including fan blade wheel, final drive shaft, change speed gear box and electromotor；Described fan blade wheel is arranged on final drive shaft left part, and final drive shaft right-hand member is connected with input on the left of change speed gear box, and on the right side of change speed gear box, outfan is connected with electromotor；It is additionally provided with a cpu controller, velocity measurement mechanisms and feather executor, described feather executor is connected between fan blade wheel and final drive shaft, and described cpu controller controls the action of the feather motor M of feather executor according to the output signal of velocity measurement mechanisms；
Described velocity measurement mechanisms includes rotating disk, fork, magnetic spheroid, noncontacting proximity sensor and containment vessel；Described containment vessel is positioned at below change speed gear box; described rotating disk is positioned at containment vessel inside center; described fork one end connects magnetic spheroid; the other end is hinged with rotating disk periphery; described noncontacting proximity sensor is arranged on the perisporium of containment vessel; when fork is in level, between magnetic spheroid and noncontacting proximity sensor, gap is minimum, is provided with drive mechanism between rotating disk and change speed gear box.
The above-mentioned wind-driven generator with anti-hypervelocity performance, it is all connected with signal cable between described noncontacting proximity sensor and cpu controller and between cpu controller and feather executor, between feather executor and cpu controller, is additionally provided with feather feedback signal cable.
The above-mentioned wind-driven generator with anti-hypervelocity performance, described drive mechanism is vertical shaft, and described vertical shaft upper end is connected with the lower output side of change speed gear box, and vertical shaft lower end is concentric with rotating disk to be connected.
The above-mentioned wind-driven generator with anti-hypervelocity performance, the quantity of described noncontacting proximity sensor is multiple, and is distributed on the perisporium of containment vessel.
The above-mentioned wind-driven generator with anti-hypervelocity performance, sets up casing, and described containment vessel is fixed on box house.
This wind-driven generator with anti-hypervelocity performance provided by the invention, when wind-force exceeds the speed limit, wind drive paddle wheel rotates, make the magnetic spheroid high speed rotating on fork, it is close with magnetometric sensor that magnetic spheroid produces centrifugal force, CPU accepts the magnetic induction signal of magnetometric sensor and Variable-pitch Controller sends instruction, controls paddle wheel and changes pitch, controls paddle wheel and meets rated speed.Present configuration is simple, stable, maintains easily, and has change pitch tachometer signal induction sensitivity high, variable pitch control advantage promptly and accurately, the contactless abrasion of overspeed preventer parts, can extension device service life, improve generating efficiency, support equipment safety, reduce wind energy conversion system maintenance cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is cpu controller and Variable-pitch Controller system schematic；
Fig. 3 is the structural representation of feather executor.
In figure, each part numbers is: fan blade wheel 1, feather executor 2, transmission main shaft 3, change speed gear box 4, power transmission shaft 5, electromotor 6, cpu controller 7, noncontacting proximity sensor 8, magnetic spheroid 9, fork 10, containment vessel 11, rotating disk 12, casing 13, vertical shaft 14, fan blade 15, worm screw 16, turbine 17, feather motor M, feather perform signal S1, feather feedback signal S2, feather relay J.
Detailed description of the invention
Referring to Fig. 1,2；Wind energy conversion system overspeed preventer provided by the invention, because vertical shaft 14 is connected between change speed gear box 4 and rotating disk 12, when wind-force hypervelocity drives fan blade wheel 1 rotation, rotating disk 12 drives fork 10 high speed rotating, it is close with noncontacting proximity sensor 8 that magnetic spheroid 9 produces centrifugal force, induced signal is passed to cpu controller 7 by noncontacting proximity sensor 8, feather executor 2 is sent instruction by cpu controller 7, feather relay J on feather executor 2 controls feather motor M action, equipped with worm screw 16 on feather motor M, the root of fan blade 15 is equipped with the worm gear 17 being meshed with worm screw 16, feather motor M drives fan blade 15 to rotate, make fan blade 15 Angulation changes, control fan blade wheel 1 to adjust to meeting rated speed.When fork 10 is in level, between magnetic spheroid 9 and noncontacting proximity sensor 8, gap is minimum; magnetic spheroid 9 and noncontacting proximity sensor 8 can be made closest; improve the sensitivity of induced signal; the quantity of noncontacting proximity sensor 8 is multiple and is distributed on the perisporium of containment vessel 11; these sensors are arranged on along the different height of perisporium; multiple output signals of the sensor output of sustained height adopt and logic; so can increase the stability margin of fan blade variation; prevent overfrequency from changing, to slow down the moment wind speed variation impact to blade strength.When wind-force exceeds the speed limit, cpu controller 7 can receive the output signal after equilibrium, makes fan blade wheel 1 accurately and timely become oar.Noncontacting proximity sensor 8 can adopt Hall revolution speed transducer, this small enclosed sensor, has that capacity of resisting disturbance is strong, stable performance, power consumption is little, use the advantages such as temperature range width.When wind-force slows down, feather feedback signal S2 inputs cpu controller 7, and cpu controller 7 sends instruction, makes the feather motor M action of feather executor 2, controls blade and recovers normal angled, it is ensured that wind-driven generator continuous-stable works.Containment vessel 11 adopts non-ferromagnetic copper aluminium material matter or plastic material, it is possible to avoid interference the Trigger Function of magnetic spheroid 9.
Claims (5)
1. there is a wind-driven generator for anti-hypervelocity performance, take turns (1), final drive shaft (3), change speed gear box (4) and electromotor (6) including fan blade；Described fan blade wheel (1) is arranged on final drive shaft (3) left part, final drive shaft (3) right-hand member is connected with change speed gear box (4) left side input, and change speed gear box (4) right side outfan is connected with electromotor (6)；It is characterized in that: be additionally provided with a cpu controller 7, velocity measurement mechanisms and feather executor (2), described feather executor (2) is connected between fan blade wheel (1) and final drive shaft (3), and described cpu controller (7) controls the action of the feather motor M of feather executor (2) according to the output signal of velocity measurement mechanisms；
Described velocity measurement mechanisms includes rotating disk (12), fork (10), magnetic spheroid (9), noncontacting proximity sensor (8) and containment vessel (11)；Described containment vessel (11) is positioned at change speed gear box (4) below; described rotating disk (12) is positioned at containment vessel (11) inside center; described fork (10) one end connects magnetic spheroid (9); the other end is hinged with rotating disk (12) periphery; described noncontacting proximity sensor (8) is arranged on the perisporium of containment vessel (11); when fork (10) is in level, between magnetic spheroid (9) and noncontacting proximity sensor (8), gap is minimum, is provided with drive mechanism between rotating disk (12) and change speed gear box (4).
2. a kind of wind-driven generator with anti-hypervelocity performance according to claim 1, it is characterized in that: be all connected with signal cable between described noncontacting proximity sensor (8) and cpu controller (7) and between cpu controller (7) and feather executor (2), between feather executor (2) and cpu controller (7), be additionally provided with feather feedback signal cable.
3. a kind of wind-driven generator with anti-hypervelocity performance according to claim 1, it is characterized in that: described drive mechanism is vertical shaft (14), described vertical shaft (14) upper end is connected with the lower output side of change speed gear box (4), and vertical shaft (14) lower end is concentric with rotating disk (12) to be connected.
4. a kind of wind-driven generator with anti-hypervelocity performance according to Claims 2 or 3, it is characterised in that: the quantity of described noncontacting proximity sensor (8) is multiple, and is distributed on the perisporium of containment vessel (11).
5. a kind of wind-driven generator with anti-hypervelocity performance according to claim 4, it is characterised in that: setting up casing (13), it is internal that described containment vessel (11) is fixed on casing (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610238195.2A CN105715460B (en) | 2016-04-16 | 2016-04-16 | A kind of wind-driven generator with anti-hypervelocity performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610238195.2A CN105715460B (en) | 2016-04-16 | 2016-04-16 | A kind of wind-driven generator with anti-hypervelocity performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105715460A true CN105715460A (en) | 2016-06-29 |
| CN105715460B CN105715460B (en) | 2018-09-11 |
Family
ID=56160218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610238195.2A Expired - Fee Related CN105715460B (en) | 2016-04-16 | 2016-04-16 | A kind of wind-driven generator with anti-hypervelocity performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105715460B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201060796Y (en) * | 2007-07-06 | 2008-05-14 | 陕西科技大学 | Centrifugal type speed relay |
| CN102297082A (en) * | 2010-06-23 | 2011-12-28 | 通用电气公司 | Overspeed protection system and method |
| CN203756437U (en) * | 2014-04-10 | 2014-08-06 | 李金瞳 | Wind driven generator capable of automatically regulating blade angle |
| DE102013008218A1 (en) * | 2013-05-14 | 2014-11-20 | Erhard Frase | Automatic mechanical rotor blade angle adjustment with overspeed protection for small wind turbines. |
| CN105003386A (en) * | 2015-08-13 | 2015-10-28 | 郭志强 | Wind turbine capable of realizing centrifugal speed limitation |
| CN105065194A (en) * | 2015-07-21 | 2015-11-18 | 何冬 | Mechanical type wind power output device |
| CN205618303U (en) * | 2016-04-16 | 2016-10-05 | 华北电力大学（保定） | Aerogenerator with prevent performance that exceeds speed limit |
-
2016
- 2016-04-16 CN CN201610238195.2A patent/CN105715460B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201060796Y (en) * | 2007-07-06 | 2008-05-14 | 陕西科技大学 | Centrifugal type speed relay |
| CN102297082A (en) * | 2010-06-23 | 2011-12-28 | 通用电气公司 | Overspeed protection system and method |
| DE102013008218A1 (en) * | 2013-05-14 | 2014-11-20 | Erhard Frase | Automatic mechanical rotor blade angle adjustment with overspeed protection for small wind turbines. |
| CN203756437U (en) * | 2014-04-10 | 2014-08-06 | 李金瞳 | Wind driven generator capable of automatically regulating blade angle |
| CN105065194A (en) * | 2015-07-21 | 2015-11-18 | 何冬 | Mechanical type wind power output device |
| CN105003386A (en) * | 2015-08-13 | 2015-10-28 | 郭志强 | Wind turbine capable of realizing centrifugal speed limitation |
| CN205618303U (en) * | 2016-04-16 | 2016-10-05 | 华北电力大学（保定） | Aerogenerator with prevent performance that exceeds speed limit |
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| Publication number | Publication date |
|---|---|
| CN105715460B (en) | 2018-09-11 |
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| GR01 | Patent grant | ||
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Granted publication date: 20180911 |