JP4786424B2 - Fluid pressure circuit for wind power generation - Google Patents

Fluid pressure circuit for wind power generation Download PDF

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JP4786424B2
JP4786424B2 JP2006158694A JP2006158694A JP4786424B2 JP 4786424 B2 JP4786424 B2 JP 4786424B2 JP 2006158694 A JP2006158694 A JP 2006158694A JP 2006158694 A JP2006158694 A JP 2006158694A JP 4786424 B2 JP4786424 B2 JP 4786424B2
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fluid pressure
wind power
power generation
fluid
pressure pump
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JP2007327397A (en
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良二 山田
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Bosch Rexroth Corp
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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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

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Description

本発明は、油圧等の流体圧を使用した風力発電のための回路に関するものである。   The present invention relates to a circuit for wind power generation using fluid pressure such as hydraulic pressure.

従来、風力により駆動される流体圧ポンプと、前記流体圧ポンプからの流体を電気に変換するための流体圧ポンプとを管路により接続した風力発電用流体圧回路がある（例えば、特許文献１参照）。
このような風力発電用流体圧回路は、発電機とともにナセルといわれる構築物の上部に設けたケース内に設置し、発電した電気だけを地上側から取り出すことができるように構成されていたが、ナセルを建築物の上部に配置すると該建築物の強度を相当高める必要があった。
このため、図２に示すように流体圧ポンプａを建築物の上部のナセルｂ内に設置して、流体圧モータｃ及び発電機ｄ等は地上側に配置し、流体圧ポンプａと流体圧モータｃとを配管を介して接続することにより、ナセルｂにかかる負荷の軽減を図るようにしている。
しかしながら、従来の構成では、不使用時に風力発電用流体圧回路内の上部側、即ち、流体圧ポンプ側の管路内の流体が抜け落ちてしまい、次に風力発電を開始しようとしても管路内に流体を満たすために非常に時間がかかっていた。 Conventionally, there is a fluid pressure circuit for wind power generation in which a fluid pressure pump driven by wind power and a fluid pressure pump for converting fluid from the fluid pressure pump into electricity are connected by a pipe line (for example, Patent Document 1). reference).
Such a fluid pressure circuit for wind power generation was installed in a case provided at the top of a structure called a nacelle together with a generator, and was configured so that only the generated electricity could be taken out from the ground side. When it is arranged at the upper part of the building, it is necessary to considerably increase the strength of the building.
Therefore, as shown in FIG. 2, the fluid pressure pump a is installed in the nacelle b at the top of the building, the fluid pressure motor c and the generator d are arranged on the ground side, and the fluid pressure pump a and the fluid pressure are arranged. The load applied to the nacelle b is reduced by connecting the motor c via a pipe.
However, in the conventional configuration, when not in use, the fluid in the upper side of the fluid pressure circuit for wind power generation, that is, the fluid in the conduit on the fluid pressure pump side drops out, and the next time the wind power generation is started, It took a very long time to fill the fluid.

特開２００４−２３９１７８号公報JP 2004-239178 A

そこで、本発明は、流体圧モータよりも上方に設けられた流体圧ポンプ側の管路に任意に流体を保持できるようにして、風力発電開始までの立ち上がり時間の短い風力発電用流体圧回路を提供することを目的とする。   Accordingly, the present invention provides a fluid pressure circuit for wind power generation that has a short rise time until the start of wind power generation so that the fluid can be arbitrarily held in a conduit on the fluid pressure pump side provided above the fluid pressure motor. The purpose is to provide.

そこで、本発明者等は鋭意検討の結果、下記の通り解決手段を見いだした。
即ち、本発明の発電用流体圧回路は、請求項１に記載の通り、風力により駆動される流体圧ポンプと、前記流体圧ポンプよりも下方に設けられた流体圧モータとを管路により接続することにより構成した風力発電用流体圧回路であって、前記管路の前記流体圧モータの流入側及び流出側にそれぞれロジック弁を設けることにより、前記ロジック弁よりも前記流体圧ポンプ側の前記管路内の流体を前記管路内に保持できるように構成したことを特徴とする。
また、請求項２に記載の本発明は、請求項１に記載の風力発電用流体圧回路において、前記各ロジック弁と前記流体圧ポンプとを接続する各管路間の流体圧の何れか高い流体圧を、前記各ロジック弁と前記流体圧ポンプとを接続する各管路間に設けたコントロールラインに設けたチェック弁により選択し、前記高い流体圧により前記各ロジック弁を付勢することを特徴とする。
また、請求項３に記載の本発明は、請求項２に記載の風力発電用流体圧回路において、前記チェック弁により選択された高い流体圧は、電磁弁又はポペット式電磁弁を介して、前記各ロジック弁を制御するようにしたことを特徴とする。 Therefore, as a result of intensive studies, the present inventors have found a solution as follows.
In other words, the power generation fluid pressure circuit according to the present invention connects a fluid pressure pump driven by wind power and a fluid pressure motor provided below the fluid pressure pump through a conduit. A fluid pressure circuit for wind power generation configured by providing a logic valve on each of an inflow side and an outflow side of the fluid pressure motor in the pipe line, whereby the fluid pressure pump side of the logic valve It is characterized in that the fluid in the pipeline can be held in the pipeline.
Moreover, the present invention according to claim 2 is the fluid pressure circuit for wind power generation according to claim 1, which is higher in fluid pressure between the pipes connecting the logic valves and the fluid pressure pump. Fluid pressure is selected by a check valve provided in a control line provided between pipes connecting the logic valves and the fluid pressure pump, and the logic valves are energized by the high fluid pressure. Features.
Further, the present invention according to claim 3 is the fluid pressure circuit for wind power generation according to claim 2, wherein the high fluid pressure selected by the check valve is supplied via the electromagnetic valve or the poppet type electromagnetic valve. Each logic valve is controlled.

本発明によれば、流体圧モータよりも上方に設けられた流体圧ポンプ側の管路内の流体を任意に管路内に保持することが可能となる。従って、例えば、不使用時に管路内の流体が下方のドレインに抜け落ちることがないため、発電開始までの立ち上がりに優れた風力発電用流体圧回路とすることができる。
また、ロジック弁には、流体圧ポンプの吸入側と流体圧モータとの間の管路内の流体圧又は流体圧ポンプの吐出側と流体圧モータとの間の管路内の流体圧の何れか高い方を選択して、各ロジック弁を付勢することにより、上記管路内への流体の保持を確実なものとすることができる。
また、前記高い方の圧力を電磁弁又はポペット式電磁弁を介して各ロジック弁を付勢することにより、同時に各ロジック弁の制御が可能となる。 According to the present invention, it is possible to arbitrarily hold the fluid in the conduit on the fluid pressure pump side provided above the fluid pressure motor in the conduit. Therefore, for example, when the fluid is not used, the fluid in the pipeline does not fall out to the lower drain, so that it is possible to provide a wind power generation fluid pressure circuit that is excellent in rising up to the start of power generation.
The logic valve includes either the fluid pressure in the conduit between the suction side of the fluid pressure pump and the fluid pressure motor or the fluid pressure in the conduit between the discharge side of the fluid pressure pump and the fluid pressure motor. By selecting the higher one and energizing each logic valve, the fluid can be reliably held in the pipe line.
Further, by energizing each logic valve with the higher pressure via a solenoid valve or a poppet type solenoid valve, it becomes possible to control each logic valve at the same time.

次に、本発明の一実施の形態について図１を参照して説明する。
図示される風力発電用流体圧回路は、風車１の駆動軸２に減速機３を介して接続された流体圧ポンプ４と流体圧ポンプ４から送られた流体により駆動される流体圧モータ５とを管路により接続することにより基本的に構成される。流体圧モータ５には、流体圧モータ５の駆動エネルギーを電気エネルギーに変換するための発電機６が接続される。尚、流体圧モータ５は構築物下部（地上側）に配置され、流体圧ポンプ４は構築物上部のナセル１０内に配置される。
また、上記流体圧回路において、流体圧ポンプ４の吸入側には、所定の流体圧を加えることができるようにチャージポンプ９がチェック弁１５を備えた管路１６を介して接続される。また、前記管路１６はチェック弁１５のチャージポンプ９側において管路１７に分岐され、圧力制御弁１４を介してタンク８に接続される。 Next, an embodiment of the present invention will be described with reference to FIG.
The illustrated fluid pressure circuit for wind power generation includes a fluid pressure pump 4 connected to a drive shaft 2 of a wind turbine 1 via a speed reducer 3, a fluid pressure motor 5 driven by fluid sent from the fluid pressure pump 4, and Is basically constructed by connecting the two by a pipe line. The fluid pressure motor 5 is connected to a generator 6 for converting driving energy of the fluid pressure motor 5 into electric energy. In addition, the fluid pressure motor 5 is arrange | positioned in the structure lower part (ground side), and the fluid pressure pump 4 is arrange | positioned in the nacelle 10 of the structure upper part.
In the fluid pressure circuit, a charge pump 9 is connected to the suction side of the fluid pressure pump 4 via a conduit 16 having a check valve 15 so that a predetermined fluid pressure can be applied. The pipe 16 is branched to a pipe 17 on the charge pump 9 side of the check valve 15 and connected to the tank 8 via the pressure control valve 14.

流体圧ポンプ４は風力を駆動源として作動して流体を圧送できるものであれば特に制限はなく、図示した例では、可変容量式アキシャルピストンポンプを使用している。尚、流体圧ポンプ４は、管路１２を介してタンク８にも接続されており、この管路１１は漏れた流体等をタンク８に戻すために使用される。   The fluid pressure pump 4 is not particularly limited as long as it can operate by using wind power as a driving source to pump the fluid, and in the illustrated example, a variable displacement axial piston pump is used. The fluid pressure pump 4 is also connected to the tank 8 via a pipe line 12, and the pipe line 11 is used for returning a leaked fluid or the like to the tank 8.

流体圧モータ５は流体圧を駆動源として作動して発電機６の軸を回転させることができるものであれば特に制限はなく、図示した例では、可変容量式のアキシャルピストンモータを使用している。尚、流体圧モータ５も、流体圧ポンプ４と同様に管路１１を介してタンク８に接続される。   The fluid pressure motor 5 is not particularly limited as long as it can operate using the fluid pressure as a drive source to rotate the shaft of the generator 6. In the illustrated example, a variable capacity axial piston motor is used. Yes. The fluid pressure motor 5 is also connected to the tank 8 via the pipe line 11 as with the fluid pressure pump 4.

また、チャージポンプ９は本回路に必要な流体を上方の流体圧ポンプ４の吸入側に供給できるものであれば特に制限はなく、図示した例では、電気で駆動する固定容量式のポンプを使用している。その容量は、流体圧ポンプ４の最大容量の１５〜２０％程度とすることが好ましい。尚、チャージポンプ９は、管路１２を介してタンク８へと接続され、漏れた流体等をタンク８に戻るようにしている。   The charge pump 9 is not particularly limited as long as it can supply the fluid necessary for this circuit to the suction side of the upper fluid pressure pump 4. In the illustrated example, a fixed capacity pump driven by electricity is used. is doing. The capacity is preferably about 15 to 20% of the maximum capacity of the fluid pressure pump 4. The charge pump 9 is connected to the tank 8 through the pipe 12 so that the leaked fluid and the like are returned to the tank 8.

本発明において管路７ａ，７ｂの流体圧モータ５側の吸入側及び吐出側のそれぞれロジック弁１３ａ，１３ｂを設けている。各ロジック弁１３ａ，１３ｂは閉じた際に、管路７ａ，７ｂのロジック弁１３ａ，１３ｂよりも上側（流体圧ポンプ４側）に流体を保持できるように構成される。これにより、回路作動停止時等にロジック弁１３ａ，１３ｂを閉じることにより流体圧ポンプ４側の管路に流体を保持することができ、再始動する際に管路に流体を行き渡らせるための時間を短縮することができる。   In the present invention, logic valves 13a and 13b on the suction side and the discharge side on the fluid pressure motor 5 side of the conduits 7a and 7b are provided, respectively. When the logic valves 13a and 13b are closed, the fluid is held above the logic valves 13a and 13b (the fluid pressure pump 4 side) of the pipes 7a and 7b. Accordingly, the fluid can be held in the pipeline on the fluid pressure pump 4 side by closing the logic valves 13a and 13b when the circuit operation is stopped, and the time for spreading the fluid to the pipeline when restarting. Can be shortened.

前記ロジック弁１３ａ，１３ｂ自体は公知であり、流体圧モータ５の流出側を閉じる方向に弁体２０ａを付勢するためのスプリングを備えたスプリング室２１ａと、このスプリング室２１ａの作用方向と、反対方向に作用する対向室２２ａとから構成される。
スプリング室２１ａ，２１ｂには、電磁弁又はポペット式電磁弁の切換弁２３を図示された左側（ロジック弁１３ａ，１３ｂを閉じる位置）に切り換えた際に、ロジック弁１３ａと流体圧ポンプ４とを接続する管路７’ａ、或いは、ロジック弁１３ｂと流体圧ポンプ４とを接続する管路７’ｂの何れか高い方の圧力が導入される。図示されるものでは、管路７’ａと管路７’ｂとの間に設けられたコントロールライン２４において、チェック弁２５ａ，２５ｂにより高圧側の選択を行うようにしている。これにより、管路７’ａ及び管路７’ｂの何れか高い方の圧力によりロジック弁１３ａ，１３ｂを閉じることができ、管路７’ａ及び管路７’ｂ内における流体の保持が確実となる。
尚、上記切換弁１４を右側に切り換えれば、ロジック弁１３ａ，１３ｂが開き、流体圧ポンプ４と流体圧モータ５との間で閉回路を構成し、風力発電をすることができる。 The logic valves 13a and 13b are known per se, and a spring chamber 21a having a spring for urging the valve body 20a in a direction to close the outflow side of the fluid pressure motor 5, and a direction of action of the spring chamber 21a, It is composed of a counter chamber 22a acting in the opposite direction.
In the spring chambers 21a and 21b, when the switching valve 23 of the electromagnetic valve or the poppet type electromagnetic valve is switched to the illustrated left side (position where the logic valves 13a and 13b are closed), the logic valve 13a and the fluid pressure pump 4 are connected. The higher pressure of the pipe 7'a to be connected or the pipe 7'b to connect the logic valve 13b and the fluid pressure pump 4 is introduced. In the illustrated example, in the control line 24 provided between the pipe line 7'a and the pipe line 7'b, the high pressure side is selected by the check valves 25a and 25b. As a result, the logic valves 13a and 13b can be closed by the higher pressure of the pipe line 7′a and the pipe line 7′b, and the fluid is retained in the pipe line 7′a and the pipe line 7′b. It will be certain.
If the switching valve 14 is switched to the right side, the logic valves 13a and 13b are opened, and a closed circuit is formed between the fluid pressure pump 4 and the fluid pressure motor 5 to generate wind power.

本発明の一実施の形態の風力発電用流体圧回路の説明図Explanatory drawing of the fluid pressure circuit for wind power generation of one embodiment of this invention 従来の風力発電用流体圧回路の説明図Explanatory drawing of conventional fluid pressure circuit for wind power generation

符号の説明Explanation of symbols

ａ 流体圧ポンプ
ｂ ナセル
ｃ 流体圧モータ
ｄ 発電機
１ 風車
２ 駆動軸
３ 減速機
４ 流体圧ポンプ
５ 流体圧モータ
６ 発電機
７ａ，７ｂ 流体圧モータと流体圧ポンプとを接続する管路
７'ａ 流体圧ポンプ４とロジック弁１３ａとを接続する管路
７'ｂ 流体圧ポンプ４とロジック弁１３ｂとを接続する管路
１２，１６，１７，１８ 管路
８ タンク
９ チャージポンプ
１０ ナセル
１４ 圧力制御弁
１３ａ，１３ｂ ロジック弁
１５ チェック弁
２３ 切換弁 a fluid pressure pump b nacelle c fluid pressure motor d generator 1 windmill 2 drive shaft 3 speed reducer 4 fluid pressure pump 5 fluid pressure motor 6 generator 7a, 7b a pipe line 7 'connecting the fluid pressure motor and the fluid pressure pump 7' a Pipe line connecting fluid pressure pump 4 and logic valve 13a 7'b Pipe line connecting fluid pressure pump 4 and logic valve 13b 12, 16, 17, 18 Pipe line 8 Tank 9 Charge pump 10 Nacelle 14 Pressure Control valve 13a, 13b Logic valve 15 Check valve 23 Switching valve

Claims (3)

風力により駆動される流体圧ポンプと、前記流体圧ポンプよりも下方に設けられた流体圧モータとを管路により接続することにより構成した風力発電用流体圧回路であって、前記管路の前記流体圧モータの流入側及び流出側にそれぞれロジック弁を設けることにより、前記ロジック弁よりも前記流体圧ポンプ側の前記管路内の流体を前記管路内に保持できるように構成したことを特徴とする風力発電用流体圧回路。   A fluid pressure circuit for wind power generation configured by connecting a fluid pressure pump driven by wind power and a fluid pressure motor provided below the fluid pressure pump through a conduit, By providing a logic valve on each of the inflow side and the outflow side of the fluid pressure motor, the fluid in the conduit on the fluid pressure pump side than the logic valve can be held in the conduit. A fluid pressure circuit for wind power generation. 前記各ロジック弁と前記流体圧ポンプとを接続する各管路間の流体圧の何れか高い流体圧を、前記各ロジック弁と前記流体圧ポンプとを接続する各管路間に設けたコントロールラインに設けたチェック弁により選択し、前記高い流体圧により前記各ロジック弁を付勢することを特徴とする請求項１に記載の風力発電用流体圧回路。   A control line in which a fluid pressure higher than the fluid pressure between the pipes connecting the logic valves and the fluid pressure pump is provided between the pipes connecting the logic valves and the fluid pressure pump. 2. The fluid pressure circuit for wind power generation according to claim 1, wherein the logic valve is selected by a check valve provided on the first power source and the logic valves are energized by the high fluid pressure. 前記チェック弁により選択された高い流体圧は、電磁弁又はポペット式電磁弁を介して、前記各ロジック弁を制御するようにしたことを特徴とする請求項２に記載の風力発電用流体圧回路。   The fluid pressure circuit for wind power generation according to claim 2, wherein the high fluid pressure selected by the check valve controls each of the logic valves via a solenoid valve or a poppet solenoid valve. .
JP2006158694A 2006-06-07 2006-06-07 Fluid pressure circuit for wind power generation Expired - Fee Related JP4786424B2 (en)

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JP6294813B2 (en) * 2014-11-17 2018-03-14 三菱重工業株式会社 Hydraulic transmission, wind power generator, and hydraulic transmission operating method
CN105927471A (en) * 2016-04-20 2016-09-07 燕山大学 Low-wind-speed start control system and low-wind-speed start control method for hydraulic wind turbine generator system
JP2018112083A (en) * 2017-01-10 2018-07-19 Ｋｙｂ株式会社 Fluid pressure device and wind power generator
JP2018112082A (en) * 2017-01-10 2018-07-19 Ｋｙｂ株式会社 Wind power generator

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JPS5941681A (en) * 1982-08-31 1984-03-07 Shimadzu Corp Apparatus utilizing wind force
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JPS5941680A (en) * 1982-08-31 1984-03-07 Shimadzu Corp Apparatus utilizing wind force
JPS61212674A (en) * 1985-03-19 1986-09-20 Matsushita Seiko Co Ltd Power transmitting apparatus of windmill
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JPH11280637A (en) * 1998-03-31 1999-10-15 Kayaba Ind Co Ltd Generator
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