JPH0343468B2 - - Google Patents

Info

Publication number
JPH0343468B2
JPH0343468B2 JP58009512A JP951283A JPH0343468B2 JP H0343468 B2 JPH0343468 B2 JP H0343468B2 JP 58009512 A JP58009512 A JP 58009512A JP 951283 A JP951283 A JP 951283A JP H0343468 B2 JPH0343468 B2 JP H0343468B2
Authority
JP
Japan
Prior art keywords
wind turbine
pitch
movable plate
blade
wind
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.)
Expired - Lifetime
Application number
JP58009512A
Other languages
Japanese (ja)
Other versions
JPS59134385A (en
Inventor
Michihisa Yonekichi
Hisayuki Suzuki
Hiroyuki Osanawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Ecology Systems Co Ltd
Original Assignee
Matsushita Seiko Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Seiko Co Ltd filed Critical Matsushita Seiko Co Ltd
Priority to JP58009512A priority Critical patent/JPS59134385A/en
Publication of JPS59134385A publication Critical patent/JPS59134385A/en
Publication of JPH0343468B2 publication Critical patent/JPH0343468B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/74—Adjusting of angle of incidence or attack of rotating blades by turning around an axis perpendicular the rotor centre line
    • 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
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/77—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism driven or triggered by centrifugal forces
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、風の力によつて風車が回転し、その
回転エネルギーを動力として利用する風力原動機
の安全装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a safety device for a wind turbine, which rotates a wind turbine due to the force of the wind and utilizes the rotational energy as motive power.

従来例の構成とその問題点 一般に風のエネルギーを利用する風力原動機で
は、強風時における過度な回転上昇を防止するた
め翼の角度（翼ピツチ）を変える装置を備えてい
る風力原動機が主流となつている。Conventional configurations and their problems In general, wind power generators that utilize wind energy are equipped with a device that changes the angle of the blades (blade pitch) to prevent excessive rotation during strong winds. ing.

以下、その構成の一実施例につて第５図および
第６図を参照しながら説明する。 An example of the configuration will be described below with reference to FIGS. 5 and 6.

図に示すように、風車発電機（図示せず）に連
結された主軸１０１に固定されたハブ１０２に翼
軸１０３を設け、前記主軸１０１には移動板１０
４が設けられている。そして、１０５は重錘ａ、
重錘取付棒１０６′と連接棒ｃよりなるガバナー
で、連接棒ｃの一端は前記移動板１０４に連結さ
れ、前記重錘ａは主軸１０１が所定回転数以上の
ときのみガバナー１０５が作動するように保持ス
プリング１０６で保持されている。また前記移動
板１０４がガバナー作用により移動した後、元に
復元させるための移動板１０４とハブ１０２間に
は復元用スプリング１０７を設け、移動板１０４
と翼軸１０３は連接棒１０８で連結され、移動板
１０４はハブ１０２に設けた移動板用案内棒１０
９により摺動自在に設けられている。また、前記
翼軸１０３には翼１１０を設けている。１１１は
重錘取付棒１０６′の運動許容溝孔である。 As shown in the figure, a blade shaft 103 is provided on a hub 102 fixed to a main shaft 101 connected to a wind turbine generator (not shown), and a movable plate 10 is provided on the main shaft 101.
4 are provided. And 105 is a weight a,
The governor consists of a weight attachment rod 106' and a connecting rod c, one end of which is connected to the movable plate 104, and the weight a is arranged so that the governor 105 operates only when the main shaft 101 rotates at a predetermined number of revolutions or more. is held by a holding spring 106. Further, a restoring spring 107 is provided between the movable plate 104 and the hub 102 to restore the movable plate 104 to its original state after the movable plate 104 has been moved by the governor action.
and the wing shaft 103 are connected by a connecting rod 108, and the movable plate 104 is connected to a movable plate guide rod 10 provided on the hub 102.
9 so as to be slidable. Further, the wing shaft 103 is provided with a wing 110 . Reference numeral 111 is a slot for allowing movement of the weight mounting rod 106'.

そして、運転中に風速が上昇し風車の回転数が
増加し、高速限界点の例えば秒速8mに至るまで
はガバナー１０５の重錘ａは保持スプリング１０
６の中に保持されている。しかし、限界点に達す
ると遠心力により保持スプリング１０６の中より
離脱し始めてガバナー１０５が急速にしかも大き
く作動しスプリング１０７の力に抗して移動板１
０４をハブ１０２の方に動かし、連接棒１０８を
介して翼ピツチを変え風力抵抗を減じて風車の破
損を防止し、風速が低速限界点即ち秒速6m以下
になればスプリング１０７の復元力と重錘ａが上
側に回つたときその重量により保持スプリング１
０６内に収容され、翼ビツチを自動的に元の状態
に復帰させるものである。 During operation, the wind speed increases and the rotation speed of the wind turbine increases, and until the high speed limit point of 8 m/s is reached, the weight a of the governor 105 is held by the holding spring 10.
It is held within 6. However, when the limit point is reached, the centrifugal force causes the retaining spring 106 to begin to separate, causing the governor 105 to operate rapidly and greatly, resisting the force of the spring 107 and moving the moving plate 1.
04 toward the hub 102, the blade pitch is changed via the connecting rod 108 to reduce wind resistance and prevent damage to the wind turbine, and when the wind speed reaches the low speed limit, that is, 6 m/s or less, the restoring force and weight of the spring 107 are reduced. When the weight a rotates upward, its weight causes the holding spring 1 to
06, and automatically returns the wing bit to its original state.

このような従来の風力原動機では、翼ピツチは
高速限界点を境にして急激に変化するため高速限
界点に相当する風が断続的に吹くときは、翼ピツ
チの急激な変化が繰り返されるため、風エネルギ
ーの利用効率が低下し、また、翼１１０、翼軸１
０３などの翼ピツチ変換部分の破損の原因となつ
ていた。 In such conventional wind turbines, the blade pitch changes rapidly after reaching the high-speed limit point, so when the wind that corresponds to the high-speed limit point blows intermittently, the blade pitch repeatedly changes rapidly. Wind energy utilization efficiency decreases, and the blade 110 and blade shaft 1
This caused damage to the wing pitch conversion part of the 03 and other aircraft.

また、ガバナー１０５はそれぞれ単独に動くた
め、重錘ａの上側と下側でのアンバランスにより
作動が確実でなく、このため翼ピツチの復帰中に
突風などにより急激に風速が上昇すると、ガバナ
ー１０５に動作不良により急速に回転が上昇し、
翼１１０の破損につながる問題があつた。 In addition, since each governor 105 moves independently, its operation is unstable due to an imbalance between the upper and lower sides of the weight a. Therefore, if the wind speed suddenly increases due to a gust of wind while the blade pitch is returning, the governor 105 Due to malfunction, the rotation speed increases rapidly,
There was a problem that led to the wing 110 being damaged.

また、特開昭57−373号公報および特開昭57−
375号公報には可変ピツチ制御を油圧などの液体
圧アクチユエータを用いて行う方法が示されてい
るが、油圧等の配管部分に液洩れ等の不具合が発
生したり、配管が複雑なために保守、点検が容易
でなくまたコストも高くつくなどの問題があつ
た。 Also, JP-A-57-373 and JP-A-57-
Publication No. 375 describes a method of performing variable pitch control using a hydraulic or other liquid pressure actuator, but problems such as leaks occur in the hydraulic piping, and the piping is complicated, making maintenance difficult. However, there were problems such as the inspection was not easy and the cost was high.

また、特開昭54−76740号公報には、可変ピツ
チ制御に電動式アクチユエータを用いた方法が示
されているが、万が一電動アクチユエ−タ自身
や、電気制御系統に故障が発生した場合には、翼
ピツチの変換が不能となり安全性に支障をきたす
などの問題があつた。 Furthermore, Japanese Patent Application Laid-Open No. 54-76740 discloses a method using an electric actuator for variable pitch control, but in the unlikely event that a failure occurs in the electric actuator itself or the electric control system, There were problems such as the impossibility of changing the pitch of the wings, which affected safety.

発明の目的 本発明は上記課題を解決するもので、台風や突
風時における翼ピツチ変換部分の動作不良や故障
による風車翼の破損を防止したり、油圧等の液体
圧アクチユエータを用いた可変ピツチ方式におけ
る液洩れ故障、保守点検の困難さ、コスト高など
の課題を解決できる風力原動機の安全装置を提供
することを目的とするものである。Purpose of the Invention The present invention solves the above problems, and aims to prevent damage to wind turbine blades due to malfunction or failure of the blade pitch conversion part during typhoons or gusts, and to prevent damage to wind turbine blades due to malfunction or failure of the blade pitch conversion part during typhoons or gusts. The purpose of this invention is to provide a safety device for wind power generators that can solve problems such as liquid leakage failures, difficulty in maintenance and inspection, and high costs.

発明の構成 本発明は上記目的を達成するために、翼取付角
度を可変自在になるように風車翼を装着したハブ
を風車発電機に連結した動力軸に設け、この動力
軸に固着された円板の軸方向に摺動自在でかつ、
円板側に引張り勝手なピツチスプリングを介して
設けられた可動板と、この可動板の移動により前
記風車翼の取付角度を変換操作する操作機構と、
前記可動板に放射方向に移動可能に設けられた複
数の重錐と、この重錐の求心方向に連結されたロ
ーラーが係脱自在に係合するシリンダーヘツド
と、前記ローラーを前記シリンダーヘツドに係合
状態に保持し、シリンダーヘツドとローラーをロ
ツクするロツクスプリングを設けたロツク機構
と、このロツク機構を介し前記可動板を移動せし
める電動シリンダーとを備え、通常は電動シリン
ダーの作動により風車翼のピツチを可変し、風車
翼が危険回転数に達した場合に前記重錐の作動に
より前記ロツク状態を解除し風車翼の取付角度を
フエザリングピツチに変換せしめる構成としたも
のである。Composition of the Invention In order to achieve the above object, the present invention provides a hub on which wind turbine blades are attached so that the blade attachment angle can be changed freely, and a hub attached to a power shaft connected to a wind turbine generator, and a circle fixed to the power shaft. Slidable in the axial direction of the plate, and
a movable plate provided on the disk side via a tensionable pitch spring; and an operating mechanism that changes the mounting angle of the wind turbine blade by moving the movable plate;
A plurality of heavy pyramids provided on the movable plate so as to be movable in a radial direction, a cylinder head in which a roller connected in the centripetal direction of the heavy pyramids is removably engaged, and the roller is engaged in the cylinder head. It is equipped with a locking mechanism equipped with a locking spring that holds the cylinder head and roller in the same position and locks the cylinder head and roller, and an electric cylinder that moves the movable plate via this locking mechanism.Normally, the pitch of the wind turbine blade is adjusted by the operation of the electric cylinder. When the wind turbine blade reaches a critical rotational speed, the locking condition is released by operating the heavy cone, and the installation angle of the wind turbine blade is changed to the feathering pitch.

本発明は上記した構成により、通常の可変ピツ
チ制御はシリンダーヘツドとローラーがロツクさ
れた状態で電動シリンダーに通電し、電動シリン
ダーによるシリンダーヘツドの移動により、可動
板が移動し操作機構を介して風車翼のピツチ制御
が行われる。そして、前記電動シリンダーもしく
はその電気系統に故障が発生した場合には、前記
電動シリンダーが作動できなくなり前記ピツチ制
御が不能となるため、外風速が大きくなると、風
車翼の回転が過度に上昇する。すなわち、風車翼
が所定以上の回転数になると、前記重錘に作用す
る遠心力がロツクスプリングのスプリング圧に抗
して大きくなり、重錘は外方に向け移動し、前記
シリンダーヘツドに係合していたローラーが離脱
し、ロツク状態が解除され、前記可動板はピツチ
スプリングの引張力により円板側へ移動し、操作
機構を介して風車翼のピツチは回転力を生じない
ピツチ（フエザリングピツチ）に切換えられるも
のである。またローラーとシリンダーヘツドのロ
ツクが解除されることにより、ローラーはシリン
ダーヘツドの外周に沿い移動することとなり、電
動シリンダーを作動しない限り、自力ではローラ
ーとシリンダーヘツドはロツク状態に復帰しない
ものである。 The present invention has the above-mentioned configuration, and in normal variable pitch control, electricity is applied to the electric cylinder with the cylinder head and rollers locked, and as the cylinder head is moved by the electric cylinder, the movable plate is moved and the windmill is controlled via the operating mechanism. Wing pitch control is performed. If a failure occurs in the electric cylinder or its electrical system, the electric cylinder becomes inoperable and the pitch control becomes impossible, so when the outside wind speed increases, the rotation of the wind turbine blades increases excessively. That is, when the wind turbine blade rotates at a predetermined speed or higher, the centrifugal force acting on the weight increases against the spring pressure of the lock spring, causing the weight to move outward and engage the cylinder head. The rollers that had been in contact with the blades are removed, the locked state is released, and the movable plate is moved toward the disc side by the tensile force of the pitch spring, and the pitch of the wind turbine blade is moved to the pitch (feather ring) that does not generate rotational force via the operating mechanism. Pitch). Furthermore, when the roller and cylinder head are unlocked, the roller moves along the outer periphery of the cylinder head, and unless the electric cylinder is operated, the roller and cylinder head will not return to the locked state on their own.

実施例の説明 本発明の一実施例を第１図〜第４図を参照しな
がら説明する。図に示すように、１は風車発電機
２に接続された動力軸で、この動力軸１にはハブ
３が設けられ、このハブ３には風車翼４が翼軸５
を介して翼取付角度を可変自在に取付けられてい
る。そして動力軸１の先端には円板６を固着し、
この円板を摺動自在に貫通した操作軸７の末端に
は可動板８が取付けられ、可動板８には前記操作
軸７の軸受９が設けられている。１０は一端が操
作軸７に遊嵌され他端が翼軸５の翼軸腕１１に遊
嵌された連接棒である。また、可動板８と円板６
との間には常に可動板８を円板６側に引き付ける
ように作用するピツチスプリング１２が取付けら
れている。そして、前記円板６の中央部には電動
シリンダー１３が取付けられ、この電動シリンダ
ー１３の軸１４の先端には凹型溝１５ａを有した
シリンダーヘツド１５が取付けられている。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 to 4. As shown in the figure, 1 is a power shaft connected to a wind turbine generator 2, a hub 3 is provided on this power shaft 1, and a wind turbine blade 4 is attached to a blade shaft 5 on this hub 3.
The blade installation angle can be changed freely through the blade. Then, a disk 6 is fixed to the tip of the power shaft 1,
A movable plate 8 is attached to the end of the operating shaft 7 that slidably passes through this disc, and a bearing 9 for the operating shaft 7 is provided on the movable plate 8. A connecting rod 10 has one end loosely fitted to the operating shaft 7 and the other end loosely fitted to the wing shaft arm 11 of the wing shaft 5. In addition, the movable plate 8 and the disc 6
A pitch spring 12 is installed between the movable plate 8 and the disc 6 so as to always draw the movable plate 8 toward the disc 6. An electric cylinder 13 is attached to the center of the disk 6, and a cylinder head 15 having a concave groove 15a is attached to the tip of a shaft 14 of the electric cylinder 13.

また、可動板８の片面には摺動可能な重錘１６
および１６′を設け、この重錘１６および１６′は
互いに連動するようにリンク棒１７にて連結し、
前記重錘１６および１６′の求心側にはローラー
１８を保持したローラーホルダー１９が設けら
れ、前記ローラー１８は前記シリンダーヘツド１
５の凹型の溝１５ａに係脱自在に設けられてい
る。また、重錘１６および１６′の移動を規制す
るためのカム装置２０として、一端に傾斜面を有
し、重錘１６に設けられたカムプレート２１と、
このカムプレート２１の傾斜面に係合し、前記カ
ムプレート２１を設けた重錘１６の移動を阻止す
るように係合するカムローラ２２と、このカムロ
ーラ２２をカムプレート２１に押圧するカムスプ
リング２３を設けたカムローラーホルダー２４を
前記可動板８に設けている。そして、重錘１６お
よび１６′はロツクスプリング２５により互いに
引き寄せられ、前記シリンダーヘツド１５の凹型
の溝１５ａにローラー１８が係合してシリンダー
ヘツド１５とローラー１８をロツク状態に保持せ
しめるものであつて番号１５〜２５の機構を総称
してロツク機構２６というものである。 In addition, a slidable weight 16 is mounted on one side of the movable plate 8.
and 16' are provided, and these weights 16 and 16' are connected by a link rod 17 so as to interlock with each other,
A roller holder 19 holding a roller 18 is provided on the centripetal side of the weights 16 and 16', and the roller 18 is attached to the cylinder head 1.
It is provided in the concave groove 15a of No. 5 so as to be freely engageable and detachable. Further, as a cam device 20 for regulating the movement of the weights 16 and 16', a cam plate 21 having an inclined surface at one end and provided on the weight 16;
A cam roller 22 that engages with the inclined surface of the cam plate 21 to prevent movement of the weight 16 provided with the cam plate 21, and a cam spring 23 that presses the cam roller 22 against the cam plate 21. A cam roller holder 24 is provided on the movable plate 8. The weights 16 and 16' are drawn together by a lock spring 25, and the rollers 18 engage with the concave grooves 15a of the cylinder head 15 to hold the cylinder head 15 and rollers 18 in a locked state. The mechanisms numbered 15 to 25 are collectively referred to as a lock mechanism 26.

上記構成において、外風速が一定の値例えば秒
速8mまでは一定の翼ピツチで運転される。この
状態では風車翼４の回転数も一定の値例えば
70rpmを超えることはないが、更に風速が上昇す
ると風車翼４の回転数を70rpmを超えないように
制御するため、電動シリンダー１３が作動し軸１
４に取付けられた電動シリンダーヘツド１５が電
動シリンダー１３側に引寄せられ、シリンダーヘ
ツド１５が移動すると同時に、シリンダーヘツド
１５にロツク状態のローラー１８を設けたローラ
ーホルダー１９、重錘１６および１６′を介して
可動板８が移動し、操作軸７、連接棒１０、翼軸
腕１１よりなる操作機構を介して翼軸５および風
車翼４は翼軸５を軸として回動し、翼ピツチが変
換される。そして、風速が低下すれば再び電動シ
リンダー１３を作動し、今度はシリンダーヘツド
１５を電動シリンダー１３より遠ざかる側に移動
して翼ピツチを元の状態に復帰させる。また、強
風時にはこのような翼ピツチ制御を行うことによ
り回転数を一定の値例えば70rpm以下に制御する
ものである。 In the above configuration, operation is performed with a constant blade pitch until the external wind speed is a constant value, for example, 8 m/s. In this state, the rotational speed of the wind turbine blades 4 is also a constant value, e.g.
Although it does not exceed 70 rpm, when the wind speed increases further, the electric cylinder 13 operates to control the rotation speed of the wind turbine blade 4 so as not to exceed 70 rpm.
The electric cylinder head 15 attached to the cylinder head 4 is drawn toward the electric cylinder 13, and at the same time as the cylinder head 15 moves, the roller holder 19 with the roller 18 in a locked state and the weights 16 and 16' are moved to the cylinder head 15. The movable plate 8 moves through the blade shaft 5, and the blade shaft 5 and the wind turbine blade 4 rotate around the blade shaft 5 through the operating mechanism consisting of the operating shaft 7, the connecting rod 10, and the blade shaft arm 11, and the blade pitch is changed. be done. Then, when the wind speed decreases, the electric cylinder 13 is operated again, and this time the cylinder head 15 is moved away from the electric cylinder 13 to return the blade pitch to its original state. Furthermore, during strong winds, such blade pitch control is performed to control the rotational speed to a constant value, for example, 70 rpm or less.

つぎに台風や突風等により翼ピツチ制御が風速
の急激な上昇に追随できず回転が急速に増加し危
険回数例えば100rpmに達した場合には、重錘１
６および１６′の遠心力がロツクスプリング２５
のスプリング圧より大きくなると重錘１６および
１６′が外方に向け移動し、シリンダーヘツド１
５にロツク状態に保持されていたローラー１８は
シリンダーヘツド１５の凹型の溝１５ａより離脱
してロツク状態が解除され、可動板８はピツチス
プリング１２および風車翼４の空気力などの力に
より円板６の方へ強制的に引き寄せられ、同時に
操作軸７、連接棒１０、翼軸腕よりなる操作機構
を介して風車翼４の翼ピツチを回転力を生じない
ピツチ（フエザリングピツチ）にして風車を停止
させるものである。なお可動板８が円板６側へ移
動するときはローラー１８はシリンダーヘツド１
５の外周に接触し転動するようになつている。ま
た、ローラー１８がシリンダーヘツド１５の凹型
溝１５ａを離脱するとき（ロツク状態の解除）の
回転数（この場合は危険回転数）はカム装置２０
のカムスプリング２３およびロツクスプリング２
５の強さを調節することにより任意に設定できる
ものである。なお実施例においては、台風や突風
等により翼ピツチ制御が風速の急激な上昇に追随
できず回転が急速に増加し危険回転数に達した場
合について述べたが、電気制御系統に故障が発生
した場合にも同様に危険回転数に達し、上記同様
の作用効果をもたらすのは言うまでもない。 Next, if the blade pitch control is unable to keep up with the rapid increase in wind speed due to a typhoon or gust of wind, and the rotation rapidly increases and reaches a dangerous number of rpm, for example, 100 rpm, the weight 1
The centrifugal force of 6 and 16' is applied to the lock spring 25.
When the spring pressure becomes greater than the spring pressure, the weights 16 and 16' move outward and the cylinder head 1
The roller 18, which was held in a locked state at the cylinder head 5, disengages from the concave groove 15a of the cylinder head 15 and is released from the locked state, and the movable plate 8 is rotated into a disc by the pitch spring 12 and the aerodynamic force of the wind turbine blade 4. At the same time, the blade pitch of the wind turbine blade 4 is set to a pitch (feathering pitch) that does not generate rotational force through the operating mechanism consisting of the operating shaft 7, connecting rod 10, and blade shaft arm. This is to stop the Note that when the movable plate 8 moves toward the disc 6 side, the roller 18 moves toward the cylinder head 1.
It is designed to come in contact with the outer periphery of 5 and roll. Further, when the roller 18 leaves the concave groove 15a of the cylinder head 15 (release of the locked state), the rotational speed (in this case, the critical rotational speed) is determined by the cam device 20.
cam spring 23 and lock spring 2
It can be set arbitrarily by adjusting the strength of step 5. In the example, we described a case where the blade pitch control was unable to follow the sudden increase in wind speed due to a typhoon or gust of wind, and the rotation rapidly increased and reached a dangerous rotation speed. Needless to say, even in such cases, the dangerous rotational speed is reached in the same way, and the same effects as described above are brought about.

そして、風車翼４がフエザリングピツチ状態に
ある風車翼４は自力で復帰できないものであつ
て、もし復帰を必要とする場合には外部からの信
号により再び電動シリンダー１３を作動させ、シ
リンダーヘツド１５を円板６側に移動し、電動シ
リンダーヘツド１５に設けられた凹型溝１５ａに
ローラー１８をロツクスプリング２５の力により
係合し、ローラー１８と電動シリンダーヘツド１
５をロツク状態にして復帰させるものである。 The wind turbine blade 4 in the feathering pitch state cannot return by itself, and if it needs to return, the electric cylinder 13 is actuated again by an external signal, and the cylinder head 15 is moved toward the disc 6 side, and the roller 18 is engaged with the concave groove 15a provided in the electric cylinder head 15 by the force of the lock spring 25, and the roller 18 and the electric cylinder head 1 are
5 is put into a locked state and restored.

発明の効果 以上の実施例から明らかなように、本発明によ
れば通常はシリンダーヘツドの移動により可変ピ
ツチ制御が行われ、風車翼の回転数が所定以上に
なつたときには重錘の遠心力でロツク状態が解除
され、風車翼のピツチを回転力を生じないピツチ
（フエザーリングピツチ）にして回転を停止させ、
自力では復帰しないようにしているので、台風や
突風時における可変ピツチ変換部分の動作不良な
どによる風車翼の破損を防止できる。また可変ピ
ツチ機構の動力源に電気を使用するため液洩れな
どの不具合が発生せず、保守、点検も容易でコス
トも安価となる。また、台風や突風時には油圧、
電気などの他の動力を介さず、遠心力のみによつ
て作動するため、可変ピツチ制御の電気系統の故
障による風車翼の過度な回転上昇に対しても風車
翼を安全に停止でき、風車翼の破損をより確実に
防止できる風力原動機の安全装置を提供できる。Effects of the Invention As is clear from the above embodiments, according to the present invention, variable pitch control is normally performed by moving the cylinder head, and when the rotation speed of the wind turbine blade exceeds a predetermined value, the centrifugal force of the weight is used. The lock state is released, the pitch of the wind turbine blade is set to a pitch that does not generate rotational force (feathering pitch), and rotation is stopped.
Since it is designed not to return on its own, it is possible to prevent damage to the wind turbine blades due to malfunction of the variable pitch conversion part during typhoons or gusts. Furthermore, since electricity is used as the power source for the variable pitch mechanism, problems such as liquid leakage do not occur, and maintenance and inspection are easy and costs are low. In addition, during typhoons and gusts, hydraulic pressure,
Since it is operated only by centrifugal force without using other power such as electricity, the wind turbine blade can be stopped safely even if the wind turbine blade rotates excessively due to a failure in the variable pitch control electrical system. It is possible to provide a safety device for wind power generators that can more reliably prevent damage to the wind turbine.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例における風力原動機
可変ピツチ機構部の側面断面図、第２図は同正面
図、第３図はロツク機構が解除になつて風車翼が
停止状態にあるときの風力原動機可変ピツチ機構
部の側面断面図、第４図は同正面図、第５図は従
来例の風力原動機可変ピツチ機構部の側面断面
図、第６図は同Ａ−Ｂ正面断面図である。 １……動力軸、２……風車発電機、３……ハ
ブ、４……風車翼、５……翼軸、６……円板、７
……操作軸、８……可動板、９……軸受、１０…
…連接棒、１１……翼軸腕、１２……ピツチスプ
リング、１３……電動シリンダー、１４……軸、
１５……シリンダーヘツド、１６……重錘、１
６′……重錘、１７……リンク棒、１８……ロー
ラー、１９……ローラーホルダー、２０……カム
装置、２１……カムプレート、２２……カムロー
ラー、２３……カムスプリング、２４……カムロ
ーラーホルダー、２５……ロツクスプリング、２
６……ロツク機構。 Fig. 1 is a side sectional view of the variable pitch mechanism of a wind power motor according to an embodiment of the present invention, Fig. 2 is a front view of the same, and Fig. 3 is a view of the wind turbine blade when the lock mechanism is released and the wind turbine blade is in a stopped state. FIG. 4 is a front view of the wind power motor variable pitch mechanism, FIG. 5 is a side sectional view of the conventional variable pitch mechanism of the wind power motor, and FIG. 6 is a front sectional view taken along line A-B of the same. . 1... Power shaft, 2... Wind turbine generator, 3... Hub, 4... Wind turbine blade, 5... Blade shaft, 6... Disc, 7
...Operating shaft, 8...Movable plate, 9...Bearing, 10...
...Connecting rod, 11 ... Wing shaft arm, 12 ... Pitch spring, 13 ... Electric cylinder, 14 ... Shaft,
15... Cylinder head, 16... Weight, 1
6'... Weight, 17... Link rod, 18... Roller, 19... Roller holder, 20... Cam device, 21... Cam plate, 22... Cam roller, 23... Cam spring, 24... ...Cam roller holder, 25...Lock spring, 2
6...Lock mechanism.

Claims (1)

【特許請求の範囲】 １ 翼取付角度を可変自在になるように風車翼を
装着したハブを風車発電機に連結した動力軸に設
け、この動力軸に固着された円板の軸方向に摺動
自在でかつ、円板側に引張り勝手なピツチスプリ
ングを介して設けられた可動板と、この可動板の
移動により前記風車翼の取付角度を変換操作する
操作機構と、前記可動板に放射方向に移動可能に
設けられた複数の重錐と、この重錐の求心方向に
連結されたローラーが係脱自在に係合するシリン
ダーヘツドと、前記ローラーを前記シリンダーヘ
ツドに係合状態に保持し、シリンダーヘツドとロ
ーラーをロツクするロツクスプリングを設けたロ
ツク機構と、このロツク機構を介し前記可動板を
移動せしめる電動シリンダーとを備え、通常は電
動シリンダーの作動により風車翼のピツチを可変
し、風車翼が危険回転数に達した場合に前記重錐
の作動により前記ロツク状態を解除し風車翼の取
付角度をフエザリングピツチに変換せしめてなる
風力原動機の安全装置。 ２ 風車翼の回転数が所定回転数以上のときにの
み重錐が遠心方向に移動するように規制するカム
装置を設けた特許請求の範囲第１項記載の風力原
動機の安全装置。[Scope of Claims] 1. A hub on which wind turbine blades are attached is provided on a power shaft connected to a wind turbine generator so that the blade attachment angle can be varied, and the hub is slid in the axial direction of a disk fixed to this power shaft. A movable plate is provided via a pitch spring that is flexible and tensionable on the disc side, an operating mechanism that changes the mounting angle of the wind turbine blade by moving the movable plate, and a radial direction on the movable plate. A plurality of movably provided heavy pyramids, a cylinder head in which rollers connected in the centripetal direction of the heavy pyramids are removably engaged, the rollers being held in engagement with the cylinder head, and a cylinder It is equipped with a lock mechanism equipped with a lock spring that locks the head and rollers, and an electric cylinder that moves the movable plate via this lock mechanism.Usually, the pitch of the wind turbine blades is varied by the operation of the electric cylinder, and the wind turbine blades are A safety device for a wind power motor, which releases the locked state by operating the heavy cone and changes the mounting angle of the wind turbine blades to a feathering pitch when a dangerous rotational speed is reached. 2. The safety device for a wind power motor according to claim 1, further comprising a cam device that restricts the cone to move in the centrifugal direction only when the number of rotations of the wind turbine blade is equal to or higher than a predetermined number of rotations.
JP58009512A 1983-01-24 1983-01-24 Safety device for wind force prime mover Granted JPS59134385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58009512A JPS59134385A (en) 1983-01-24 1983-01-24 Safety device for wind force prime mover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58009512A JPS59134385A (en) 1983-01-24 1983-01-24 Safety device for wind force prime mover

Publications (2)

Publication Number Publication Date
JPS59134385A JPS59134385A (en) 1984-08-02
JPH0343468B2 true JPH0343468B2 (en) 1991-07-02

Family

ID=11722296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58009512A Granted JPS59134385A (en) 1983-01-24 1983-01-24 Safety device for wind force prime mover

Country Status (1)

Country Link
JP (1) JPS59134385A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1390758B1 (en) * 2008-07-23 2011-09-23 Rolic Invest Sarl WIND GENERATOR
WO2010059983A2 (en) * 2008-11-21 2010-05-27 Preus Robert W Wind turbine
CN101988475B (en) * 2010-11-10 2012-05-30 潍坊永能达新能源科技有限公司 Variable-pitch wind turbine
CN104675622A (en) * 2014-12-02 2015-06-03 青岛金博士自动化技术有限公司 Wind driven generator with variable-pitch device and control method of wind driven generator
CN109026531B (en) * 2018-08-21 2020-05-15 国家电投集团广西兴安风电有限公司 Variable pitch device of wind driven generator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5476740A (en) * 1977-11-30 1979-06-19 Nippon Telegr & Teleph Corp <Ntt> Wind mill of wind force generator, etc.
JPS57375A (en) * 1980-03-17 1982-01-05 United Technologies Corp Blade pitch control system equipment for wind power turbine
JPS57373A (en) * 1980-03-17 1982-01-05 United Technologies Corp Blade pitch control system equipment for wind power turbine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5476740A (en) * 1977-11-30 1979-06-19 Nippon Telegr & Teleph Corp <Ntt> Wind mill of wind force generator, etc.
JPS57375A (en) * 1980-03-17 1982-01-05 United Technologies Corp Blade pitch control system equipment for wind power turbine
JPS57373A (en) * 1980-03-17 1982-01-05 United Technologies Corp Blade pitch control system equipment for wind power turbine

Also Published As

Publication number Publication date
JPS59134385A (en) 1984-08-02

Similar Documents

Publication Publication Date Title
EP2108825B1 (en) System and method for reducing rotor loads in a wind turbine upon detection of blade-pitch failure and loss of counter-torque
EP1612412B1 (en) Storm control for horizontal axis wind turbine
DK1429025T3 (en) Wind of precursor type and method of operation thereof
EP1478849B1 (en) Passive speed and power regulation of a wind turbine
EP0200823B1 (en) Wind turbine
US4565929A (en) Wind powered system for generating electricity
EP2472104B1 (en) Method and system for braking in a wind turbine
EP2737205B1 (en) A method of yawing a rotor of a wind turbine
US20110280725A1 (en) Long Term Rotor Parking on a Wind Turbine
US20110135471A1 (en) Wind Turbine
JP4982733B2 (en) Vertical-axis linear blade wind turbine with aerodynamic speed control mechanism
US9470208B2 (en) Wind turbine and locking method
NZ526052A (en) Azimuthal control of a wind-energy turbine during a storm by simultaneous adjustment of housing and rotor blades
CN110925137A (en) Shutdown feathering method for large wind turbine generator system with blade jamming fault
CN109854446B (en) Control system for ensuring safety of wind turbine generator
US8053919B1 (en) Wind turbine power generator
CN102996346B (en) Initiative variable pitch wind driven generator
JPH0343468B2 (en)
JP2003201951A (en) Excessive rotation avoiding mechanism of horizontal axis wind mill
CN103527409B (en) A kind of method and apparatus for being used in case of emergency brake wind energy conversion system
US9726146B2 (en) Assembly for fixing a rotor blade of a wind power plant
JP4953469B2 (en) Method and equipment for braking a rotor of a wind turbine generator
KR20150019461A (en) Wind-Electric Power Generation System and Driving Stop Method Thereof
RU2745840C1 (en) Wind power plant
JP7455034B2 (en) wind power generator