CN201011335Y - Self-adapting torsional spring velocity regulating aerogenerator - Google Patents

Self-adapting torsional spring velocity regulating aerogenerator Download PDF

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Publication number
CN201011335Y
CN201011335Y CNU2006200795048U CN200620079504U CN201011335Y CN 201011335 Y CN201011335 Y CN 201011335Y CN U2006200795048 U CNU2006200795048 U CN U2006200795048U CN 200620079504 U CN200620079504 U CN 200620079504U CN 201011335 Y CN201011335 Y CN 201011335Y
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CN
China
Prior art keywords
blade
wind
paddle
speed
spring
Prior art date
Application number
CNU2006200795048U
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Chinese (zh)
Inventor
余新洛
Original Assignee
陕西新通智能科技有限公司
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Application filed by 陕西新通智能科技有限公司 filed Critical 陕西新通智能科技有限公司
Priority to CNU2006200795048U priority Critical patent/CN201011335Y/en
Application granted granted Critical
Publication of CN201011335Y publication Critical patent/CN201011335Y/en

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    • Y02E10/723

Abstract

The utility model relates to a self-adaptive torsion spring speed adjusting type wind power generator which can adjust the rotate speed of the blade according to the condition of the wind speed, consisting of a blade with a changeable paddle distance and a machine head, wherein, the blade with a changeable paddle distance is arranged in the hub of the machine head end, and the high strength spring is sleeved between the bottom of a paddle shaft and an adjust fastening nut. When the blade rotates around the paddle shaft and changes the paddle distance, the high strength spring is compressed or flicked; in working, when the wind speed is in the rated wind speed, the windward stress of the blade is in balance with the spring torsion, and the windward angle does not change; and when the wind speed exceeds the rated wind speed, the blade overcomes the spring torsion and rotates around the shaft to change the paddle distance and realize the speed adjusting; after feathering the paddle, in the condition of wind power reducing, the blade shaft is out of the paddle feathering state in the torsion effect, realizing the automatic replacement of the blade.

Description

Self adaption torsion spring regulable speed type wind-driven generator

Technical field

The utility model relates to a kind of middle-size and small-size wind-driven generator of being regulated the fan blade rotating speed by self adaption torsion spring feather structure.

Background technique

As everyone knows, when wind speed changes, the blade rotating speed of wind-driven generator will change with change of wind velocity.But the physical property of wind-driven generator all material all is limited, too high wind speed the blower fan blade is damaged, the output voltage of wind-driven generator is significantly raise, except that puncturing generator insulating, system load be burnt because of overvoltage.Therefore, in this case, the wind speed round of must taking measures to control.This control mode is called the speed governing or the stall of wind power generator oar blade.

At present,, generally adopt its head is turned one's head or to face upward head, reduce rotating speed to reduce the facing the wind mode at angle of fan blade in order to prevent " driving " fault of middle-size and small-size wind-driven generator.But turning one's head and facing upward in the speed regulating mechanism, the external extension spring all need be set and connect extension spring and the rocking arm of body, bearing wind-force and change the facing the wind purpose at angle of fan blade to reach.Yet when wind speed was higher than the shutdown wind speed of wind-driven generator, for making the wind wheel feathering, the necessary self-locking of extension spring was so that locked with the feathering state.After this, can utilize scope even wind speed is reduced to, non-through manual reset, wind-driven generator will keep the feathering stall always, and can't enter generating state.Frequent manual intervention not only makes the user be pestered beyond endurance, and under night, sleety weather and unattended situation, it is impossible that manual intervention almost becomes, thereby has abandoned generating opportunity in vain, and system availability is greatly reduced.

By all kinds of machineries of electronic circuit control, the medium-sized wind power generating set that the hydraulic arrangements for speed regulation apply to Large-scale Wind Turbines and larger capacity already (〉=50KW), but in 50KW and following Pump for Medium and Small Power Generating Set, because above-mentioned speed control system complex structure, involve great expense, maintenance load and difficulty all increase to some extent, so do not obtain practical application so far.

The model utility content

The purpose of this utility model is to overcome the deficiency that prior art exists, so provide a kind of simple in structure, fabricating cost is low, for ease of maintenaince, the system availability height, can when wind speed exceeds rated wind speed, adjust the fan blade pitch automatically to reach the self adaption torsion spring regulable speed type wind-driven generator of speed governing purpose.

The technical solution that adopts is so for achieving the above object: the self adaption torsion spring regulable speed type wind-driven generator that is provided is made up of variablepiston fan blade and head, the variablepiston fan blade is installed in the wheel hub of head end by the paddle shaft of fan blade root, and brute spring is set between paddle shaft bottom and the adjusting lock nut.When paddle shaft rotated and changes pitch, brute spring will be tightened or loosen at fan blade.In the real work, when wind speed is in rated wind speed, the stressed and spring torsion balance in fan blade windward side, the angle that facings the wind does not change, and when wind speed surpassed rated wind speed, fan blade overcame spring torsion and pivots, and changed pitch to realize speed governing.Behind the feathering, reduce as wind-force, blade shaft is deviate from the feathering state under twisting force, realized automatically reseting of fan blade.

Compared with prior art, the utility model since adopted can automatically reset self adaption feather fan blade torsion spring speed governing design proposal, make wind-driven generator regulate the fan blade rotating speed automatically according to the wind speed situation of change, have simple in structure, fabricating cost is low, for ease of maintenaince, the system availability advantages of higher.

Description of drawings

Fig. 1 is the structure principle chart of this device.

Fig. 2 is the stressed fundamental diagram of feather fan blade.

Embodiment

Narrate working principle of the present utility model below in conjunction with Fig. 1 and Fig. 2.

In the embodiment shown in fig. 1, wind-driven generator is made up of variablepiston fan blade (1), paddle shaft (2), head (3), wheel hub (4), brute spring (5), adjusting lock nut (6) etc., variablepiston fan blade (1) is installed in the wheel hub (4) of head (3) end by the paddle shaft (2) of fan blade root, and brute spring (5) is set between paddle shaft bottom and the adjusting lock nut (6).When fan blade rotated and changes pitch around paddle shaft, brute spring will be tightened or loosen.

The speed control principle of self adaption feather fan blade as shown in Figure 2 in the utility model, when wind speed is in the rated wind speed of wind-driven generator operation, the component F1 of air total output F is born in the fan blade windward side and the torsion of brute spring balances each other, and the angle that facings the wind of fan blade does not change.When wind speed surpassed rated wind speed, the fan blade windward side was born the air total output and is increased, and F1 is greater than the torsion of spring, and the relative wind angle of windward side strengthens, and fan blade pivots, and its established angle is that pitch also is changed thereupon.Wind speed exceeds rated wind speed the more, and the fan blade pitch changes more, has reached the purpose of speed governing with this.When wind speed reaches the shutdown wind speed of design, the relative wind angle of fan blade windward side will be threaded to maximum, and fan blade enters feather position, and wind-driven generator is shut down.And when wind-force was reduced by the shutdown wind speed, F1 was less than the torsion of brute spring, and blade shaft is overflowed by the feathering state under twisting force, made fan blade can bear wind-force and rotation again, had realized automatically reset purpose.Change adjusting lock nut's position, will increase or reduce the torsion of brute spring, and then change the adjusting sensitivity of fan blade under different wind-force, to adapt to the needs of different product structure.

F2 is torsion among Fig. 2, and V is relative wind velocity, and V1 is wind speed, and V2 is leaf line speed, and α is for meeting The angle, β is relative wind angle, δ is established angle.

Claims (1)

1. self adaption torsion spring regulable speed type wind-driven generator, form by variablepiston fan blade and head, it is characterized in that: variablepiston fan blade (1) is installed in the wheel hub (4) of head (3) end by the paddle shaft (2) of fan blade root, and brute spring (5) is set between paddle shaft bottom and the adjusting lock nut (6).
CNU2006200795048U 2006-08-03 2006-08-03 Self-adapting torsional spring velocity regulating aerogenerator CN201011335Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2006200795048U CN201011335Y (en) 2006-08-03 2006-08-03 Self-adapting torsional spring velocity regulating aerogenerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2006200795048U CN201011335Y (en) 2006-08-03 2006-08-03 Self-adapting torsional spring velocity regulating aerogenerator

Publications (1)

Publication Number Publication Date
CN201011335Y true CN201011335Y (en) 2008-01-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2006200795048U CN201011335Y (en) 2006-08-03 2006-08-03 Self-adapting torsional spring velocity regulating aerogenerator

Country Status (1)

Country Link
CN (1) CN201011335Y (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009059491A1 (en) * 2007-11-07 2009-05-14 Guangshun Wang A flexible variable paddle mechanism of a wind power generator
CN101793230A (en) * 2010-04-07 2010-08-04 西南科技大学 Wind mill pitch-variable speed regulation device based on wind pressure
CN101975143A (en) * 2010-11-19 2011-02-16 宁波锦浪新能源科技有限公司 Stabilized-speed pitch control device of wind-driven generator
CN101988475A (en) * 2010-11-10 2011-03-23 马效春 Variable-pitch wind turbine
CN101457744B (en) * 2008-12-25 2011-08-31 浙江华鹰风电设备有限公司 Passive paddle changing wind power generator
CN102235300A (en) * 2010-04-20 2011-11-09 吕元林 Windmill wind blade with multiple blades on outer ring
CN102926932A (en) * 2012-06-13 2013-02-13 上海应用技术学院 Automatic blade-changing speed-regulating device based on wind speed
CN103256182A (en) * 2013-04-18 2013-08-21 深圳市福田区青少年科技教育协会 Self-adaption wind charger
CN103266989A (en) * 2013-05-29 2013-08-28 上海跃风新能源科技有限公司 Wind-driven generator automatic protection device
CN103790776A (en) * 2012-11-01 2014-05-14 唐安祥 Independent variable-pitch wind turbine for wind generating sets
CN105545597A (en) * 2016-02-23 2016-05-04 哈尔滨工业大学深圳研究生院 Passive propeller pitch control device of straight-bladed vertical-axis wind turbine
CN107100790A (en) * 2017-05-24 2017-08-29 湖北师范大学 A kind of adaptive wind paddle structure of wind-driven generator

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009059491A1 (en) * 2007-11-07 2009-05-14 Guangshun Wang A flexible variable paddle mechanism of a wind power generator
CN101457744B (en) * 2008-12-25 2011-08-31 浙江华鹰风电设备有限公司 Passive paddle changing wind power generator
CN101793230A (en) * 2010-04-07 2010-08-04 西南科技大学 Wind mill pitch-variable speed regulation device based on wind pressure
CN102235300A (en) * 2010-04-20 2011-11-09 吕元林 Windmill wind blade with multiple blades on outer ring
CN101988475A (en) * 2010-11-10 2011-03-23 马效春 Variable-pitch wind turbine
CN101975143A (en) * 2010-11-19 2011-02-16 宁波锦浪新能源科技有限公司 Stabilized-speed pitch control device of wind-driven generator
CN102926932A (en) * 2012-06-13 2013-02-13 上海应用技术学院 Automatic blade-changing speed-regulating device based on wind speed
CN102926932B (en) * 2012-06-13 2015-04-15 上海应用技术学院 Automatic blade-changing speed-regulating device based on wind speed
CN103790776A (en) * 2012-11-01 2014-05-14 唐安祥 Independent variable-pitch wind turbine for wind generating sets
CN103256182A (en) * 2013-04-18 2013-08-21 深圳市福田区青少年科技教育协会 Self-adaption wind charger
CN103266989A (en) * 2013-05-29 2013-08-28 上海跃风新能源科技有限公司 Wind-driven generator automatic protection device
CN103266989B (en) * 2013-05-29 2015-05-27 上海跃风新能源科技有限公司 Wind-driven generator automatic protection device
CN105545597A (en) * 2016-02-23 2016-05-04 哈尔滨工业大学深圳研究生院 Passive propeller pitch control device of straight-bladed vertical-axis wind turbine
CN105545597B (en) * 2016-02-23 2019-03-01 哈尔滨工业大学深圳研究生院 A kind of passive pitch control device of prismatic blade vertical axis aerogenerator
CN107100790A (en) * 2017-05-24 2017-08-29 湖北师范大学 A kind of adaptive wind paddle structure of wind-driven generator

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