JP4523269B2 - High-speed rotation suppression mechanism for wind turbines for power generation - Google Patents

High-speed rotation suppression mechanism for wind turbines for power generation Download PDF

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JP4523269B2
JP4523269B2 JP2003432450A JP2003432450A JP4523269B2 JP 4523269 B2 JP4523269 B2 JP 4523269B2 JP 2003432450 A JP2003432450 A JP 2003432450A JP 2003432450 A JP2003432450 A JP 2003432450A JP 4523269 B2 JP4523269 B2 JP 4523269B2
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power generation
brake
speed rotation
suppression mechanism
heat
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JP2005188427A (en
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次郎 塚原
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Daiwa House Industry Co Ltd
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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
    • 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
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

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  • Braking Arrangements (AREA)

Description

本発明は、発電用風車の高速回転抑制機構に関する。   The present invention relates to a high-speed rotation suppression mechanism for a wind turbine for power generation.

強風時の風車や発電部の保護を目的として、強風で風車の回転数が所定の一定回転数に達すると、それを越えて回転数が上昇しないように制御する高速回転抑制機構を風車に組み込むことがある。   In order to protect the windmill and power generation section during strong winds, the windmill incorporates a high-speed rotation suppression mechanism that controls so that the rotational speed does not increase when the rotational speed of the windmill reaches a predetermined constant speed due to strong winds. Sometimes.

しかしながら、従来の高速回転抑制機構は、停電やバッテリー切れのおそれのある電気を用いるものであったり、回転抑制のためのブレーキの作動のタイミングやブレーキの解除のタイミングをコントロールする制御機構が複雑であるという問題があった。   However, the conventional high-speed rotation suppression mechanism uses electricity that may cause a power failure or battery exhaustion, and the control mechanism that controls the timing of brake operation and brake release for rotation suppression is complicated. There was a problem that there was.

本発明は、上記のような従来の問題点に鑑み、ブレーキの作動と解除を自動で行うことができ、しかも、それを電気を使わず簡素な構造で実現することができる発電用風車の高速回転抑制機構を提供することを課題とする。   In view of the conventional problems as described above, the present invention is capable of automatically operating and releasing a brake, and that can be realized with a simple structure without using electricity. It is an object to provide a rotation suppression mechanism.

上記の課題は、ブレーキ手段が、熱に反応にして動作する作動素子を備え、
該作動素子は、風車の発電部で発する熱が伝えられるように、風車の回転側と固定側の一方に備えられ、回転側の高速回転時に発電部から発する熱で動作して風車の回転側と固定側との間で接触による摩擦を生じさせて回転側にブレーキをかけ、発電部の温度低下により復帰して前記接触を断ちブレーキの解除を行うようになされていることを特徴とする発電用風車の高速回転抑制機構によって解決される。 The above problem is that the brake means includes an actuating element that operates in response to heat,
The actuating element is provided on one of the rotating side and the stationary side of the windmill so that heat generated by the power generating part of the windmill is transmitted, and operates with heat generated from the power generating part during high-speed rotation on the rotating side. Between the motor and the stationary side to generate friction due to contact, brake the rotating side, return due to the temperature drop of the power generation unit, cut off the contact and release the brake This is solved by a high-speed rotation suppression mechanism for wind turbines.

この高速回転抑制機構では、風車の回転側が高速回転すると、発電部の温度が上昇し、その熱に反応して作動素子が動作をすることにより、摩擦によるブレーキ作用で回転側の高速回転が抑制され、また、風速低下で風車の回転数が落ちると、発電部の温度も下がり、作動素子は復帰動作を行って、ブレーキが解除される。   In this high-speed rotation suppression mechanism, when the rotation side of the windmill rotates at a high speed, the temperature of the power generation unit rises, and the operating element operates in response to the heat, thereby suppressing high-speed rotation on the rotation side due to braking action due to friction. In addition, when the rotational speed of the windmill decreases due to a decrease in wind speed, the temperature of the power generation unit also decreases, the operating element performs a return operation, and the brake is released.

このように、本発明の高速回転抑制機構は、風力発電用の発電部の発熱特性に着目し、それをうまい具合に利用したものであるから、ブレーキの作動と解除を自動で行うことができ、しかも、それを電気を使わず簡素な構造で実現することができる。   As described above, the high-speed rotation suppression mechanism of the present invention pays attention to the heat generation characteristics of the power generation unit for wind power generation and uses it in good condition, so that the brake can be automatically operated and released. Moreover, it can be realized with a simple structure without using electricity.

本発明の発電用風車の高速回転抑制機構は、以上のとおりのものであるから、ブレーキの作動と解除を自動で行うことができ、しかも、それを電気を使わず簡素な構造で実現することができる。   Since the high-speed rotation suppression mechanism of the wind turbine for power generation according to the present invention is as described above, it is possible to automatically operate and release the brake and realize it with a simple structure without using electricity. Can do.

次に、本発明の実施最良形態を図面に基づいて説明する。   Next, the best mode for carrying out the present invention will be described with reference to the drawings.

図１及び図２に示す実施形態の発電用風車１は、サボニウス型風車からなり、その回転側２は、図１（イ）に示すように、対のブレード３，３の上下両端部に円板４，５が取着されたものからなっていて、下側の円板５の下面側に、図１（ロ）に示すように、アウターローター型の発電部６のアウターローター６ａが、回転側２と一体回転するように取り付けられている。なお、６ｂは、インナーの固定子である。そして、風車１の固定側８がアウターローター６ａの下面側と対面するようにして備えられ、それらの間に、回転側２の高速回転を抑制するブレーキ手段７が組み込まれている。   A wind turbine 1 for power generation according to the embodiment shown in FIGS. 1 and 2 is a Savonius type wind turbine, and its rotating side 2 is circular at both upper and lower ends of a pair of blades 3 and 3, as shown in FIG. As shown in FIG. 1 (b), the outer rotor 6a of the outer rotor type power generation unit 6 is rotated on the lower surface side of the lower disk 5 as shown in FIG. Mounted to rotate integrally with side 2. Reference numeral 6b denotes an inner stator. And the fixed side 8 of the windmill 1 is provided so that the lower surface side of the outer rotor 6a may be faced, and the brake means 7 which suppresses the high speed rotation of the rotation side 2 is incorporated among them.

このブレーキ手段７は、一方の側がアウターローター６ａの下面側に伝熱可能な接触状態となるように取り付けられた作動素子としてのバイメタル９と、該バイメタル９のもう一方の側に取り付けられたブレーキ用の第１摺擦部１０と、該第１摺擦部１０に対面するようにして固定側８に取り付けられたブレーキ用の第２摺擦部１１とで構成されている。   The brake means 7 includes a bimetal 9 as an operating element attached so that one side is in contact with the lower surface of the outer rotor 6a so that heat can be transferred, and a brake attached to the other side of the bimetal 9. The first rubbing portion 10 for use and the second rubbing portion 11 for brake attached to the fixed side 8 so as to face the first rubbing portion 10.

そして、このブレーキ手段７では、図２（ロ）に示すように、強風で風車１が高速回転をし、発電部６のアウターローター６ａの温度が上昇すると、その熱がバイメタル９に伝えられてバイメタル９が変形動作を行い、第１摺擦部１０が第２摺擦部１１と接触して自動で摩擦によるブレーキがかかる一方、図２（イ）に示すように、風速の低下によって、アウターローター６ａの温度が低下すると、バイメタル９が復帰動作を行い、第１摺擦部１０が第２摺擦部１１から離れて自動でブレーキが解除されるようになされている。   In the brake means 7, as shown in FIG. 2 (b), when the wind turbine 1 rotates at high speed with strong wind and the temperature of the outer rotor 6 a of the power generation unit 6 rises, the heat is transferred to the bimetal 9. The bimetal 9 performs a deforming operation, and the first rubbing portion 10 comes into contact with the second rubbing portion 11 to automatically brake by friction. On the other hand, as shown in FIG. When the temperature of the rotor 6a is lowered, the bimetal 9 performs a return operation so that the first rubbing portion 10 is separated from the second rubbing portion 11 and the brake is automatically released.

なお、バイメタル９と第１摺擦部１０との間には、ブレーキによる摩擦熱が第１摺擦部１０の側からバイメタル９の側に伝わるのを抑制ないしは阻止する断熱部１２が介設されている。   A heat insulating portion 12 is provided between the bimetal 9 and the first rubbing portion 10 to suppress or prevent the frictional heat generated by the brake from being transmitted from the first rubbing portion 10 side to the bimetal 9 side. ing.

このように、上記のようなブレーキ手段７を採用する高速回転抑制機構では、発電部６の発電による発熱特性をうまい具合に利用してブレーキの作動と解除が行われるようになされているから、ブレーキの作動と解除を自動で行うことができ、しかも、それを電気を使わず、バイメタル９を用いた簡素な構造で実現することができる。   In this way, in the high-speed rotation suppression mechanism that employs the brake means 7 as described above, the operation and release of the brake are performed using the heat generation characteristics by the power generation of the power generation unit 6 in a good condition. The brake can be automatically activated and released, and can be realized with a simple structure using the bimetal 9 without using electricity.

しかも、発電部６から伝えられる熱を利用してブレーキの作動と解除を制御する機構であるので、伝熱のタイムラグをうまい具合に利用して、摺擦部１０，１１同士のハンチングの発生を抑制ないしは阻止することも可能となる。   Moreover, since it is a mechanism that controls the operation and release of the brake using the heat transmitted from the power generation unit 6, the occurrence of hunting between the rubbing units 10, 11 is made using the heat transfer time lag in a good condition. It can also be suppressed or blocked.

また、ブレーキの作動後も強風が続くような場合は、ブレーキが作動すると、風車１の回転が落ち、発電部６の温度が低下し、ブレーキが解除され、また、風車１の回転が速まり、発電部６の温度が上昇し、ブレーキが作動するということが繰り返され、それが収斂していくことで、第１摺擦部１０と第２摺擦部１１とが一定の押し合い力のもとで接触を継続するようになり、風車１が高回転に至らない適当な速度で回転するようになって、長引く強風下において、その強風をかわしつつ無理のない安定した効率の良い発電を実現することも可能となる。   Further, when strong wind continues after the brake is actuated, when the brake is actuated, the rotation of the windmill 1 is reduced, the temperature of the power generation unit 6 is lowered, the brake is released, and the rotation of the windmill 1 is accelerated. When the temperature of the power generation unit 6 rises and the brake is operated repeatedly, the first rubbing unit 10 and the second rubbing unit 11 have a constant pressing force as they converge. The wind turbine 1 will rotate at an appropriate speed that does not lead to high rotation, and under the prolonged strong wind, the stable and efficient power generation without overdoing the strong wind will be realized. It is also possible to do.

以上に、本発明の実施形態を示したが、本発明はこれに限られるものではなく、発明思想を逸脱しない範囲で各種の変更が可能である。例えば、上記の実施形態では、バイメタル９を回転側２に備えさせた場合を示しているが、固定側８に備えさせるようにしてもよい。また、上記の実施形態では、ブレーキ手段における作動素子としてバイメタル９を用いた場合を示したが、バイメタル９に替え、温度によって膨張収縮を行う作動媒体を作動素子とし、これを封入したシリンダー装置を用い、発電部６の温度で作動媒体を膨張収縮させて、ブレーキの作動と解除が行われるようにするのもよいし、要は、温度によって動作を行うようなものが用いられていればよい。また、上記の実施形態では、発電用風車として、サボニウス型風車１を用いた場合を示したが、風車の種類に制限はなく、各種の風力発電用風車に広く用いることができるものであることはいうまでもない。   Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, although the case where the bimetal 9 is provided on the rotation side 2 is shown in the above embodiment, the bimetal 9 may be provided on the fixed side 8. In the above embodiment, the case where the bimetal 9 is used as the operating element in the brake means has been described. However, instead of the bimetal 9, a working medium that expands and contracts depending on the temperature is used as the operating element, and a cylinder device in which the cylinder is sealed is provided. The working medium may be inflated and shrunk at the temperature of the power generation unit 6 so that the brake is operated and released. In short, it is only necessary to use something that operates according to the temperature. . In the above embodiment, the Savonius type windmill 1 is used as the windmill for power generation. However, the type of windmill is not limited and can be widely used for various windmills for wind power generation. Needless to say.

実施形態の高速回転抑制機構を用いる発電用風車を示すもので、図（イ）は同風車の回転側部分の斜視図、図（ロ）は高速回転抑制機構部分の一部断面正面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a wind turbine for power generation using a high-speed rotation suppression mechanism according to an embodiment. FIG. 1 (a) is a perspective view of a rotation side portion of the wind turbine, and FIG. . 図（イ）及び図（ロ）はそれぞれ、高速回転抑制機構部分の作動状態を示す一部断面正面図である。FIGS. 1A and 1B are partial cross-sectional front views showing the operating state of the high-speed rotation suppression mechanism.

符号の説明Explanation of symbols

１…サボニウス型風車（発電用風車）
２…回転側
６…発電部
７…ブレーキ手段
８…固定側
９…バイメタル（作動素子） 1 ... Savonius type wind turbine (wind turbine for power generation)
2 ... Rotating side 6 ... Power generation unit 7 ... Brake means 8 ... Fixed side 9 ... Bimetal (actuating element)

Claims (1)

ブレーキ手段が、熱に反応して動作する作動素子を備え、
該作動素子は、風車の発電部で発する熱が伝えられるように、風車の回転側と固定側の一方に備えられ、回転側の高速回転時に発電部から発する熱で動作して風車の回転側と固定側との間で接触による摩擦を生じさせて回転側にブレーキをかけ、発電部の温度低下により復帰して前記接触を断ちブレーキの解除を行うようになされることで、回転側が、抑制された速度で回転するようになされており、かつ、前記回転側と固定側との間で生じる接触による摩擦の熱が前記作動素子に伝わるのを抑制ないしは阻止する断熱部が備えられていることを特徴とする発電用風車の高速回転抑制機構。 The brake means comprises an actuating element that operates in response to heat ,
The actuating element is provided on one of the rotating side and the stationary side of the windmill so that heat generated by the power generating part of the windmill is transmitted, and operates with heat generated from the power generating part during high-speed rotation on the rotating side. and cause friction due to contact between the stationary side braking the rotating side, in Rukoto adapted to return the temperature reduction in the power generation unit to release the brake cut off the contact, the rotation side, suppressing And a heat insulating portion that suppresses or prevents the heat of friction caused by contact between the rotating side and the fixed side from being transmitted to the operating element . A high-speed rotation suppression mechanism for a wind turbine for power generation.
JP2003432450A 2003-12-26 2003-12-26 High-speed rotation suppression mechanism for wind turbines for power generation Expired - Fee Related JP4523269B2 (en)

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JP5308547B2 (en) * 2012-01-12 2013-10-09 三菱重工業株式会社 Fan device for wind turbine generator and wind turbine generator
CN109292580B (en) * 2018-11-21 2024-05-10 广州广日电梯工业有限公司 Wind-pressure type adjustable speed limiter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63285338A (en) * 1987-05-15 1988-11-22 Koyo Seiko Co Ltd Braking device
JP2002070719A (en) * 2000-08-29 2002-03-08 Itn:Kk Wind force generator corresponding to wind direction or wind force shift

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63285338A (en) * 1987-05-15 1988-11-22 Koyo Seiko Co Ltd Braking device
JP2002070719A (en) * 2000-08-29 2002-03-08 Itn:Kk Wind force generator corresponding to wind direction or wind force shift

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