JP2023108171A - Yaw brake pad of wind power generator - Google Patents
Yaw brake pad of wind power generator Download PDFInfo
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- JP2023108171A JP2023108171A JP2022009140A JP2022009140A JP2023108171A JP 2023108171 A JP2023108171 A JP 2023108171A JP 2022009140 A JP2022009140 A JP 2022009140A JP 2022009140 A JP2022009140 A JP 2022009140A JP 2023108171 A JP2023108171 A JP 2023108171A
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- 239000000919 ceramic Substances 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 15
- 239000000314 lubricant Substances 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000002783 friction material Substances 0.000 description 19
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 239000013527 degreasing agent Substances 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005237 degreasing agent Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 2
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
Images
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
- F03D7/04—Automatic control; Regulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Braking Arrangements (AREA)
- Wind Motors (AREA)
Abstract
Description
本発明は風力発電機のヨーブレーキパッドに関する。 The present invention relates to a yaw brake pad for wind power generators.
一般に風力発電機は図１に示すように、地中に埋設した基礎１にタワーを立設し、タワー２の上端部にナセル３がヨーブレーキ装置４を介して略水平面内で旋回可能に設置されている。
Generally, as shown in FIG. 1, a wind power generator has a tower erected on a
ナセル３には放射状に延びるブレード５を備えたハブ６が略水平な回転軸線の周りに回転可能に組み付けられている。
A
ヨーブレーキ装置４には、特開平８－８２２７７号公報に開示されているように、ブレーキディスクと、ブレーキディスクを上下から挟むブレーキパッド及びブレーキパッドを駆動する油圧装置が内蔵され、油圧でブレーキパッドをブレーキディスクに圧接することによりナセル３が制動されて旋回不能に固定される。
As disclosed in Japanese Patent Application Laid-Open No. 8-82277, the
従来の風力発電機では、ヨーブレーキパッドに樹脂系のものが用いられている。樹脂系のヨーブレーキパッドは、グリスや油圧装置の作動油が付着すると、付着したグリスや作動油が吸着され、組織内にまで浸透する。組織に浸透した油分は脱脂洗浄剤を使用しても表面の油分が除去できるだけで、内部の油分は除去できない。そのため、ヨーブレーキパッドの摩擦係数が低下し、制動力が下がるので、強風に煽られるとナセル３が動いてしまい、それに伴いヨーブレーキパッドの摩耗の進行が早くなる。そのためヨーブレーキパッドの交換頻度が高く、風力発電機のランニングコストが増加する。
In conventional wind power generators, resin-based yaw brake pads are used. When grease or hydraulic fluid of a hydraulic system adheres to the resin-based yaw brake pad, the adhered grease or hydraulic fluid is adsorbed and permeates into the tissue. The oil that has permeated the tissue can only be removed from the surface using a degreasing detergent, but the internal oil cannot be removed. As a result, the coefficient of friction of the yaw brake pads decreases and the braking force decreases, so that the
本発明はかかる問題点に鑑みてなされたものであって、耐久寿命が長く、ランニングコストの低減が可能な風力発電機のヨーブレーキパッドを提供することを目的とする。 SUMMARY OF THE INVENTION It is an object of the present invention to provide a yaw brake pad for a wind power generator that has a long service life and can reduce running costs.
本発明は、複数枚のブレードを取り付けたロータヘッドが回転可能に組み付けられ、基礎に立設されるタワーの上端に旋回可能に設置されるナセルに制動を加えてナセルを固定する風力発電機のヨーブレーキパッドであって、
金属成分としてＣｕが５０～７０重量％、Ｆｅが１０～２０重量％、Ｚｎが１０重量％未満、Ｍｎが５重量％未満、
セラミックス成分としてＳｉＣが１０重量％未満、
潤滑材としてＣが１０重量％未満の割合で金属成分とセラミックス成分及び潤滑材を混合した粉末原料を加圧成型して焼結したことを特徴とする。
The present invention is a wind power generator in which a rotor head with a plurality of blades is rotatably assembled and a nacelle is rotatably installed on the upper end of a tower erected on a foundation by applying braking to fix the nacelle. A yaw brake pad,
50 to 70% by weight of Cu, 10 to 20% by weight of Fe, less than 10% by weight of Zn, and less than 5% by weight of Mn as metal components;
less than 10% by weight of SiC as a ceramic component;
It is characterized by press-molding and sintering a powder raw material in which a metal component, a ceramic component and a lubricant are mixed at a ratio of less than 10% by weight of C as a lubricant.
そして、好ましくは前記金属成分の混合割合を５０～８０重量％にする。
また、好ましくは、前記セラミックス成分がアルミナ又はシリカを含むとともに、セラミックス成分の混合割合を１５重量％未満にする。
さらにまた、好ましくは、前記潤滑材が二硫化モリブデンを含むとともに、潤滑材の混合割合を１０重量％未満にする。
Then, the mixing ratio of the metal component is preferably 50 to 80% by weight.
Also, preferably, the ceramic component contains alumina or silica, and the mixing ratio of the ceramic component is less than 15% by weight.
Furthermore, preferably, the lubricant contains molybdenum disulfide, and the mixing ratio of the lubricant is less than 10% by weight.
本発明に係るヨーブレーキパッドは基材がＣｕやＦｅ等の金属材料から成るので、油分によって変性することがない。また、加圧成型して焼結するので、組織が緻密になり、油分が浸透し難い。そのため、脱脂洗浄剤で簡単に表面の油分を除去できるので、長期に亘り摩擦係数が安定し、耐久寿命が長く、風力発電機のランニングコストの低減が可能となる。 Since the base material of the yaw brake pad according to the present invention is made of a metallic material such as Cu or Fe, the yaw brake pad is not denatured by oil. In addition, since the material is sintered by pressure molding, the structure becomes dense and the oil hardly permeates. Therefore, the surface oil can be easily removed with a degreasing agent, so that the coefficient of friction is stable over a long period of time, the durable life is long, and the running cost of the wind power generator can be reduced.
以下に本発明を説明するに、図２には本発明の一実施例に係る焼結摩擦材製のヨーブレーキパッドの組成を示す。焼結摩擦材製のヨーブレーキパッドは、図２に示す組成の金属粉末とセラミックス粉末及び潤滑材を混合した粉末原料を加圧成型し、焼結して製作されたものである。図３に、焼結摩擦材製のヨーブレーキパッドの物性を示す。また、図４に焼結摩擦材製のヨーブレーキパッドと従来の樹脂系摩擦材製のヨーブレーキパッドの摩擦特性を比較して示す。さらにまた、図５に焼結摩擦材製のヨーブレーキパッドの摩擦特性を示し、図６に樹脂系摩擦材製のヨーブレーキパッドの摩擦特性を示す。 To explain the present invention, FIG. 2 shows the composition of a yaw brake pad made of a sintered friction material according to one embodiment of the present invention. A yaw brake pad made of a sintered friction material is manufactured by press-molding and sintering a powder raw material obtained by mixing metal powder, ceramic powder, and lubricant having the composition shown in FIG. FIG. 3 shows physical properties of a yaw brake pad made of a sintered friction material. Also, FIG. 4 shows a comparison of friction characteristics between a yaw brake pad made of a sintered friction material and a conventional yaw brake pad made of a resin friction material. Furthermore, FIG. 5 shows the friction characteristics of a yaw brake pad made of a sintered friction material, and FIG. 6 shows the friction characteristics of a yaw brake pad made of a resin friction material.
図２に示す組成の焼結摩擦材製のヨーブレーキパッドは、図４のグラフから明らかなように、樹脂系摩擦材製のヨーブレーキパッドに比べ約４倍の高い摩擦係数を有する。 As is clear from the graph of FIG. 4, the yaw brake pad made of the sintered friction material having the composition shown in FIG. 2 has a coefficient of friction approximately four times higher than that of the yaw brake pad made of the resin-based friction material.
焼結摩擦材製のヨーブレーキパッドは、焼結により組織が緻密になっているので、油分が浸透し難い。そのため、脱脂洗浄剤で簡単に表面の油分を除去できるので、図５のグラフに示すように、油分除去によって油分の付着していない状態時の摩擦係数と同等までに回復させることができる。そのため、長期に亘り摩擦係数が安定するので耐久寿命が長く、風力発電機のランニングコストの低減が可能となる。 A yaw brake pad made of a sintered friction material has a dense structure due to sintering, so it is difficult for oil to permeate. Therefore, since the oil on the surface can be easily removed with a degreasing agent, as shown in the graph of FIG. Therefore, the coefficient of friction is stabilized over a long period of time, so the durable life is long, and the running cost of the wind power generator can be reduced.
一方、樹脂系摩擦材のヨーブレーキパッドでは油分が組織まで入り込むため脱脂洗浄剤を使用してヨーブレーキパッドの表面の油分を除去しても、図６のグラフに示すように摩擦係数が油分の付着していない状態時の摩擦係数と同等までに復帰することはない。 On the other hand, in yaw brake pads made of resin-based friction materials, oil penetrates into the tissue, so even if the oil is removed from the surface of the yaw brake pad using a degreaser, the coefficient of friction remains low as shown in the graph of FIG. The coefficient of friction does not return to the same level as in the non-adhered state.
ヨーブレーキパッドとして用いるに好適な焼結摩擦材の組成の範囲を図７に示す。
組成範囲は、金属成分としてＣｕが５０～７０重量％、Ｆｅが１０～２０重量％、Ｚｎが１０重量％未満、Ｍｎが５重量％未満、
セラミックス成分としてＳｉＣが１０重量％未満、
潤滑材としてＣが１０重量％未満の割合で金属成分とセラミックス成分及び潤滑材を混合することが好ましい。
なお、図１及び図７におけるその他の金属としては、Ｎｉ，Ｃｒ，Ｗが、その他のセラミックスとしてアルミナ、シリカ等を挙げることができる。また潤滑材には二硫化モリブデン等を含めても良い。
FIG. 7 shows the range of compositions of sintered friction materials suitable for use as yaw brake pads.
The composition range is 50 to 70% by weight of Cu, 10 to 20% by weight of Fe, less than 10% by weight of Zn, and less than 5% by weight of Mn as metal components.
less than 10% by weight of SiC as a ceramic component;
It is preferable to mix the metal component, the ceramic component, and the lubricant at a ratio of less than 10% by weight of C as the lubricant.
Incidentally, examples of other metals in FIGS. 1 and 7 include Ni, Cr, and W, and examples of other ceramics include alumina, silica, and the like. Also, the lubricating material may include molybdenum disulfide or the like.
そして、好ましくは金属成分の混合割合を５０～８０重量％にする。金属成分が５０重量％以下ではブレーキ材としての強度が著しく低下する。一方。金属成分が８０重量％以上では、過剰強度となり、製造コストが増大する。 Then, the mixing ratio of the metal component is preferably 50 to 80% by weight. If the metal content is less than 50% by weight, the strength as a brake material is remarkably lowered. on the other hand. If the metal component is 80% by weight or more, the strength becomes excessive and the manufacturing cost increases.
また、好ましくは、セラミックス成分の混合割合を１０～１５重量％にする。
１０重量％より少ないと十分な研磨性が得られず、摩擦係数が安定しないことにより、ナセル３の制動保持に悪影響が出る。一方、１５重量％より多いとブレーキディスクを損耗させ、摩擦係数が安定しないので、制動保持に悪影響がでる。
Also, preferably, the mixing ratio of the ceramic component is 10 to 15% by weight.
If the content is less than 10% by weight, sufficient abrasiveness cannot be obtained, and the coefficient of friction is not stable, which adversely affects the brake retention of the
さらにまた、好ましくは、潤滑材の混合割合を１０重量％未満にする。潤滑材の混合割合が１０重量％以上となると、ブレーキ材としての強度が低下してしまう。 Furthermore, preferably, the mixing ratio of the lubricant is less than 10% by weight. If the mixing ratio of the lubricant is 10% by weight or more, the strength of the brake material is lowered.
１…基礎
２…タワー
３…ナセル
４…ヨーブレーキ装置
５…ブレード
６…ハブ
DESCRIPTION OF
Claims (4)
金属成分としてＣｕが５０～７０重量％、Ｆｅが１０～２０重量％、Ｚｎが１０重量％未満、Ｍｎが５重量％未満、
セラミックス成分としてＳｉＣが１０重量％未満、
潤滑材としてＣが１０重量％未満の割合で金属成分とセラミックス成分及び潤滑材を混合した粉末原料を加圧成型して焼結したことを特徴とする風力発電機のヨーブレーキパッド。 A yaw brake pad of a wind power generator that applies braking to the nacelle, which is rotatably assembled to a rotor head with multiple blades and is rotatably installed at the top of a tower erected on the foundation, to fix the nacelle. There is
50 to 70% by weight of Cu, 10 to 20% by weight of Fe, less than 10% by weight of Zn, and less than 5% by weight of Mn as metal components;
less than 10% by weight of SiC as a ceramic component;
What is claimed is: 1. A yaw brake pad for a wind power generator, characterized by pressure-molding and sintering a powder raw material obtained by mixing a metal component, a ceramic component, and a lubricant with a C content of less than 10% by weight as a lubricant.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022009140A JP2023108171A (en) | 2022-01-25 | 2022-01-25 | Yaw brake pad of wind power generator |
| PCT/JP2022/033048 WO2023145121A1 (en) | 2022-01-25 | 2022-09-02 | Yaw brake pad of wind power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| JP2022009140A JP2023108171A (en) | 2022-01-25 | 2022-01-25 | Yaw brake pad of wind power generator |
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| JP2023108171A true JP2023108171A (en) | 2023-08-04 |
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| JP2022009140A Pending JP2023108171A (en) | 2022-01-25 | 2022-01-25 | Yaw brake pad of wind power generator |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001064628A (en) * | 1999-08-27 | 2001-03-13 | Toshiba Tungaloy Co Ltd | Friction material-formed body |
| KR20130024610A (en) * | 2011-08-31 | 2013-03-08 | 대우조선해양 주식회사 | Apparatus for reducing noise of yaw break system |
-
2022
- 2022-01-25 JP JP2022009140A patent/JP2023108171A/en active Pending
- 2022-09-02 WO PCT/JP2022/033048 patent/WO2023145121A1/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001064628A (en) * | 1999-08-27 | 2001-03-13 | Toshiba Tungaloy Co Ltd | Friction material-formed body |
| KR20130024610A (en) * | 2011-08-31 | 2013-03-08 | 대우조선해양 주식회사 | Apparatus for reducing noise of yaw break system |
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| Publication number | Publication date |
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| WO2023145121A1 (en) | 2023-08-03 |
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