JP4680019B2 - Power generation circuit - Google Patents

Power generation circuit Download PDF

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JP4680019B2
JP4680019B2 JP2005275987A JP2005275987A JP4680019B2 JP 4680019 B2 JP4680019 B2 JP 4680019B2 JP 2005275987 A JP2005275987 A JP 2005275987A JP 2005275987 A JP2005275987 A JP 2005275987A JP 4680019 B2 JP4680019 B2 JP 4680019B2
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fluid pressure
valve
power generation
generation circuit
pressure motor
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JP2007085263A (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

Description

本発明は、発電回路に関するものである。   The present invention relates to a power generation circuit.

従来の建設機械や重量物運搬装置の走行回路には、例えば、図１に示されるハイドロ・スタティック・トランスミッション回路が使用されている。そして、この回路を使用したものとして、例えば、特許文献１に開示されるような風力発電設備がある。
このような風力発電の場合には、発電回路を構成する流体圧機器や発電機を、ナセルといわれる風力発電設備上部のケース内に設置し、発電した電気だけを発電設備の下部から取り出すようにしているが、ナセルを発電設備上部に配置すると、風力発電設備の強度を相当高める必要がある。
このため、流体圧ポンプａを発電設備のナセル内に設置して、発電設備の下部に流体圧モータｂ、発電機ｃを設けて、その間を配管で接続することにより、ナセルの重量の軽減を図るようにしている。
しかしながら、この構成では、風力が弱い場合に機械的損失や、発電回路内の管路の圧力損失によって、発電できないという問題がある。特に、発電設備の下部にまで落下した流体を、発電設備の上まで押し上げなければならず、塔の高さが数十メートルから１００メートルまであるため、その損失は大きく、風力が弱い場合には発電することができなかった。 For example, a hydro-static transmission circuit shown in FIG. 1 is used in a traveling circuit of a conventional construction machine or heavy material transport device. And as what uses this circuit, there exists a wind power generation installation which is disclosed by patent document 1, for example.
In the case of such wind power generation, fluid pressure devices and generators that make up the power generation circuit are installed in a case at the top of the wind power generation facility called a nacelle, and only the generated electricity is taken out from the bottom of the power generation facility. However, if the nacelle is placed on the top of the power generation facility, the strength of the wind power generation facility needs to be considerably increased.
For this reason, the fluid pressure pump a is installed in the nacelle of the power generation facility, the fluid pressure motor b and the generator c are provided in the lower part of the power generation facility, and the connection between them is made by piping, thereby reducing the weight of the nacelle. I try to figure it out.
However, with this configuration, there is a problem that power cannot be generated due to mechanical loss or pressure loss in a pipeline in the power generation circuit when wind power is weak. In particular, the fluid that has fallen to the bottom of the power generation equipment must be pushed up to the top of the power generation equipment, and the height of the tower is from several tens of meters to 100 meters. I could not generate electricity.

特開２００４−２３９１７８号公報JP 2004-239178 A

そこで、本発明は、駆動力が弱い場合でも発電可能な発電回路を提供することを目的とする。   Therefore, an object of the present invention is to provide a power generation circuit capable of generating power even when the driving force is weak.

そこで、本発明者等は鋭意検討の結果、このような発電回路には、熱量交換や油圧ポンプ・油圧モータのタンク量補充のためにチャージポンプが必要であり、このチャージポンプの圧力を利用して、風力が弱いときに風車が回るためのサポートをすれば、風力が弱くても発電が可能となるという知見に基づき、下記の通り解決手段を見いだした。
即ち、本発明の発電回路は、請求項１に記載の通り、外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送られる流体により駆動される流体圧モータと、前記流体圧モータにより駆動される発電機と、前記流体圧ポンプ及び／又は流体圧モータに流体を補充するためのチャージポンプとを備える発電回路であって、前記発電回路は、前記流体圧モータの流出側の流路を遮断する方向に作用するロジック弁を備え、前記ロジック弁の下流側、且つ、前記流体圧ポンプの流入側に、前記チャージポンプが接続されることを特徴とする。
また、請求項２に記載の本発明は、請求項１に記載の発電回路において、前記発電回路は、前記ロジック弁の開閉を制御するための切換弁を備え、前記ロジック弁は、前記流体圧モータの流出側の流路を遮断する方向に弁体を作用させるためスプリング室と、前記ロジック弁を開放する方向に流体圧を作用させるための対向室とを備え、前記ロジック弁を閉じる場合には、前記切換弁を切り換えて、前記スプリング室には、シャトル弁を介して、前記流体圧モータの流出側又は前記チャージポンプの流体圧が導入させるようにし、前記対向室側には、前記チャージポンプの流体圧と前記流体圧モータの流出側の流体圧とを導入させ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に記載の発電回路において、前記切換弁を切り換えて、前記ロジック弁を閉じる場合には、前記流体圧モータの流出側は、絞りを介して、タンク側に接続されることを特徴とする。
また、請求項４に記載の本発明は、請求項２又は３に記載の発電回路において、前記切換弁を切り換えて、前記ロジック弁を閉じる場合には、前記ロジック弁の前記流体圧モータの流出側と、前記チャージポンプの流出側とをチェック弁を介して接続することを特徴とする。 Thus, as a result of intensive studies, the inventors of the present invention require a charge pump for exchanging the amount of heat and replenishing the tank amount of the hydraulic pump / hydraulic motor, and use the pressure of the charge pump. Based on the knowledge that wind power can be generated even if wind power is weak, power generation is possible even if the wind power is weak.
That is, the power generation circuit of the present invention is driven by an external force, a fluid pressure pump driven by an external force, a fluid pressure motor driven by a fluid sent from the fluid pressure pump, and the fluid pressure motor. And a charge pump for replenishing fluid to the fluid pressure pump and / or the fluid pressure motor, the power generation circuit passing through the flow path on the outflow side of the fluid pressure motor. A logic valve acting in a shut-off direction is provided, and the charge pump is connected to the downstream side of the logic valve and the inflow side of the fluid pressure pump.
According to a second aspect of the present invention, in the power generation circuit according to the first aspect, the power generation circuit includes a switching valve for controlling opening and closing of the logic valve, and the logic valve includes the fluid pressure. When closing the logic valve, a spring chamber for operating the valve body in the direction of blocking the flow path on the outflow side of the motor and an opposing chamber for applying fluid pressure in the direction of opening the logic valve The switching valve is switched so that the outflow side of the fluid pressure motor or the fluid pressure of the charge pump is introduced into the spring chamber via a shuttle valve, and the charge chamber is introduced into the counter chamber side. The fluid pressure of the pump and the fluid pressure on the outflow side of the fluid pressure motor are introduced.
According to a third aspect of the present invention, in the power generation circuit according to the second aspect, when the switching valve is switched and the logic valve is closed, the outflow side of the fluid pressure motor is connected via a throttle. And connected to the tank side.
According to a fourth aspect of the present invention, in the power generation circuit according to the second or third aspect, when the logic valve is closed by switching the switching valve, the fluid pressure motor of the logic valve flows out. And the outflow side of the charge pump are connected via a check valve.

本発明によれば、駆動力の弱い時に、ロジック弁を閉じて、チャージポンプからの流体を、流体圧ポンプの流入側に積極的に作用させるようにすることで、駆動力を補助して発電を可能にする。
また、切換弁による発電回路の制御が可能となり、また、ロジック弁のスプリング室に供給される流体圧に応じて制御することが可能となる。
また、流体圧モータの流出側を、絞りを介して、タンク側に接続されるようにすることにより、チャージポンプの流量分を逃がすことができ、流体圧モータの流出側の圧力上昇を抑えることができる。
また、ロジック弁の流体圧モータ側と、チャージポンプの流出側とをチェック弁を介して接続することにより、流体圧ポンプがチャージポンプの流量以上に回転始めた場合には、必要な流体を供給することができる。 According to the present invention, when the driving force is weak, the logic valve is closed, and the fluid from the charge pump is made to act positively on the inflow side of the fluid pressure pump, thereby assisting the driving force and generating power. Enable.
In addition, the power generation circuit can be controlled by the switching valve, and can be controlled according to the fluid pressure supplied to the spring chamber of the logic valve.
In addition, by connecting the outflow side of the fluid pressure motor to the tank side via a throttle, the flow rate of the charge pump can be released and the pressure rise on the outflow side of the fluid pressure motor can be suppressed. Can do.
Also, by connecting the fluid pressure motor side of the logic valve and the outflow side of the charge pump via a check valve, if the fluid pressure pump starts rotating above the charge pump flow rate, the necessary fluid is supplied. can do.

本発明の第１の実施の形態によれば、外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送られる流体により駆動される流体圧モータと、前記流体圧モータにより駆動される発電機と、前記流体圧ポンプ及び／又は流体圧モータに流体を補充するためのチャージポンプとを備える発電回路であって、前記発電回路は、前記流体圧モータの流出側の流路を遮断する方向に作用するロジック弁を備え、前記ロジック弁の下流側、且つ、前記流体圧ポンプの流入側に、前記チャージポンプが接続されることにより、流体圧ポンプの駆動力が弱い場合に、流体圧モータの流出側の流路を遮断して、チャージポンプからの流体を供給することにより、流体圧ポンプを駆動することが可能となる。   According to the first embodiment of the present invention, a fluid pressure pump driven by an external force, a fluid pressure motor driven by a fluid sent from the fluid pressure pump, and a generator driven by the fluid pressure motor And a charge pump for replenishing fluid to the fluid pressure pump and / or the fluid pressure motor, the power generation circuit in a direction to block the flow path on the outflow side of the fluid pressure motor When the driving force of the fluid pressure pump is weak by connecting the charge pump to the downstream side of the logic valve and the inflow side of the fluid pressure pump. The fluid pressure pump can be driven by shutting off the flow path on the outflow side and supplying the fluid from the charge pump.

また、第２の実施の形態によれば、上記第１の実施の形態において、前記発電回路は、前記ロジック弁の開閉を制御するための切換弁を備え、前記ロジック弁は、前記流体圧モータの流出側の流路を遮断する方向に弁体を作用させるためスプリング室と、前記ロジック弁を開放する方向に流体圧を作用させるための対向室とを備え、前記ロジック弁を閉じる場合には、前記切換弁を切り換えて、前記スプリング室には、シャトル弁を介して、前記流体圧モータの流出側又は前記チャージポンプの流体圧が導入させるようにし、前記対向室側には、前記チャージポンプの流体圧と前記流体圧モータの流出側の流体圧とを導入させることにより、切換弁による発電回路の制御が可能となり、また、ロジック弁のスプリング室に供給される流体圧に応じて制御することが可能となる。   According to the second embodiment, in the first embodiment, the power generation circuit includes a switching valve for controlling opening and closing of the logic valve, and the logic valve is the fluid pressure motor. A spring chamber for causing the valve element to act in the direction of blocking the flow path on the outflow side, and a counter chamber for acting fluid pressure in the direction of opening the logic valve, and closing the logic valve The switching valve is switched so that the fluid pressure of the fluid pressure motor or the fluid pressure of the charge pump is introduced into the spring chamber via a shuttle valve, and the charge pump is disposed on the counter chamber side. And the fluid pressure on the outflow side of the fluid pressure motor, the power generation circuit can be controlled by the switching valve, and the fluid pressure supplied to the spring chamber of the logic valve can be controlled. Flip it becomes possible to control.

また、第３の実施の形態によれば、上記第２の実施の形態において、前記切換弁を切り換えて、前記ロジック弁を閉じる場合には、前記流体圧モータの流出側は、絞りを介して、タンク側に接続されることにより、流体圧モータの流出側の流体圧の上昇を抑えることができる。   In addition, according to the third embodiment, in the second embodiment, when the switching valve is switched and the logic valve is closed, the outflow side of the fluid pressure motor is connected via a throttle. By connecting to the tank side, an increase in fluid pressure on the outflow side of the fluid pressure motor can be suppressed.

また、第４の実施の形態によれば、上記第３の実施の形態において、前記切換弁を切り換えて、前記ロジック弁を閉じる場合には、前記ロジック弁の前記流体圧モータの流出側と、前記チャージポンプの流出側とをチェック弁を介して接続することにより、流体圧ポンプがチャージポンプの流量以上に駆動し始めた場合には、必要な流体を供給することができる。   According to the fourth embodiment, in the third embodiment, when the switching valve is switched and the logic valve is closed, the outflow side of the fluid pressure motor of the logic valve; By connecting the outflow side of the charge pump via a check valve, it is possible to supply the necessary fluid when the fluid pressure pump starts to be driven beyond the flow rate of the charge pump.

次に、本発明の一実施例について図３を参照して説明する。
図示される発電回路は、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、前記駆動力を電気エネルギーに変換するための発電機６とを備えている。この発電回路の流体圧ポンプ４の入力側と、流体圧モータの流出側５とを接続する流路７には、流体圧ポンプ４や流体圧モータ５等への流体を、タンク８から供給するためのチャージポンプ９が接続される。 Next, an embodiment of the present invention will be described with reference to FIG.
The illustrated power generation circuit includes a fluid pressure pump 4 connected to a drive shaft 2 of a windmill 1 via a speed reducer 3, a fluid pressure motor 5 driven by a fluid sent from the fluid pressure pump 4, and the drive And a generator 6 for converting force into electrical energy. Fluid to the fluid pressure pump 4 and the fluid pressure motor 5 is supplied from the tank 8 to the flow path 7 that connects the input side of the fluid pressure pump 4 and the outflow side 5 of the fluid pressure motor. For this purpose, a charge pump 9 is connected.

流体圧ポンプ４は、ナセル（図示せず）内に配置されており、本実施例では、可変容量式の一方向回転式のものを使用し、漏れた流体等は、流路１０を介してタンク８へと戻される。
流体圧モータ５は、ナセルの下方に配置されており、本実施例では、可変容量式の一方向回転式のものを使用し、漏れた流体等は、流路１１，１０を介してタンク８へと戻される。
チャージポンプ９は、同様にナセルの下方に配置されており、本実施例では、電気により駆動される固定容量式の一方向回転式のものを使用し、漏れた流体等は、流路１２を介してタンク８へと戻される。 The fluid pressure pump 4 is disposed in a nacelle (not shown), and in this embodiment, a variable capacity one-way rotating type is used, and leaked fluid or the like passes through the flow path 10. Returned to tank 8.
The fluid pressure motor 5 is disposed below the nacelle. In this embodiment, a variable capacity unidirectional rotating type is used, and leaked fluid or the like is supplied to the tank 8 via the flow paths 11 and 10. Returned to.
Similarly, the charge pump 9 is disposed below the nacelle. In this embodiment, a fixed capacity type unidirectional rotating type driven by electricity is used. To the tank 8.

流路７には、流体圧モータ５の流出側を閉じる方向に作用するロジック弁１３が備えられている。このロジック弁１３は、流体圧モータ５の流出側を閉じる方向に弁体１３ａを付勢するためのスプリング室１３ｂと、このスプリング室１３ａの作用方向と、反対方向に作用する対向室１３ｃとを備えている。スプリング室１３ａは、後述する切換弁１４を切り換えることにより、タンク８又は流体圧モータ５の流出側又はチャージポンプ９の流出側と接続されることになる。また、対向室１３ｃには、流体圧モータ５の流出側の流体圧と、チャージポンプ９の流出側の流体圧とが導入される。   The flow path 7 is provided with a logic valve 13 that acts in a direction to close the outflow side of the fluid pressure motor 5. The logic valve 13 includes a spring chamber 13b for urging the valve body 13a in a direction to close the outflow side of the fluid pressure motor 5, and an operation direction of the spring chamber 13a and an opposite chamber 13c acting in the opposite direction. I have. The spring chamber 13 a is connected to the outflow side of the tank 8 or the fluid pressure motor 5 or the outflow side of the charge pump 9 by switching a switching valve 14 described later. Further, the fluid pressure on the outflow side of the fluid pressure motor 5 and the fluid pressure on the outflow side of the charge pump 9 are introduced into the facing chamber 13c.

発電回路は、ロジック弁１３の開閉を制御するための電磁ソレノイド式の切換弁１４を備えている。図示される位置１４ａにおいては、ロジック弁１３のスプリング室１３ｂとタンク８とが接続される。
左側のブロック１４ｂに切り換えた際には、スプリング室１３ｂは、流体圧モータ５の流出側の流体圧又はチャージポンプ９の流体圧がシャトル弁１７によって選択されて導入される。 The power generation circuit includes an electromagnetic solenoid type switching valve 14 for controlling opening and closing of the logic valve 13. In the illustrated position 14a, the spring chamber 13b of the logic valve 13 and the tank 8 are connected.
When switching to the left block 14b, the spring chamber 13b is introduced with the fluid pressure on the outflow side of the fluid pressure motor 5 or the fluid pressure of the charge pump 9 selected by the shuttle valve 17.

流路７は、分岐されて絞り１５及び切換弁１４（１４ａ）を介してタンク８に接続される。また、この分岐点よりも下流側において、更に分岐されてチェック弁１６を介して、ロジック弁１３の下流側で、チャージポンプ９の流出側と流体圧ポンプ４とを接続する流路に接続される。
尚、上記絞り１５に使用することができるものを例示すると、絞り弁やフローコントロール弁を挙げることができる。また、チェック弁１６としては、例えば、アンチキャビテーション用のチェック弁を使用することができる。 The flow path 7 is branched and connected to the tank 8 via the throttle 15 and the switching valve 14 (14a). Further, further downstream from the branch point, the branch is further branched and connected to a flow path connecting the outflow side of the charge pump 9 and the fluid pressure pump 4 on the downstream side of the logic valve 13 via the check valve 16. The
Examples of those that can be used for the throttle 15 include a throttle valve and a flow control valve. Moreover, as the check valve 16, for example, a check valve for anti-cavitation can be used.

上記構成において、切換弁１４が図示される状態（１４ａ）では、ロジック弁１３のスプリング室１３ｂは、タンク８に接続されるため、低い圧力でロジック弁１３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する。
次に、切換弁１４を左側のブロック１４ｂに切り換えることにより、ロジック弁１３のスプリング室１３ｂには、ロジック弁１３の上流側（流体圧モータ５の流出側）の流体圧又はチャージポンプ９の流体圧がシャトル弁１７によって選択されて導入され、ロジック弁１３が閉じられることになる。このとき、チャージポンプ９からの流体は、流体圧ポンプ４の流入側に作用し、この圧力により流体圧ポンプ４が駆動し始める。その結果、流体圧モータ５も駆動され、発電を開始することになる。
従って、駆動力が弱い場合に、チャージポンプ９の流体圧により、流体圧ポンプ４が駆動し、駆動力近傍の摩擦係数を低減させることにより、発電が開始されるため機械効率が良好となる。 In the above configuration, in the state (14a) in which the switching valve 14 is illustrated, the spring chamber 13b of the logic valve 13 is connected to the tank 8, so that the logic valve 13 opens at a low pressure, and the fluid pressure pump 4 and fluid pressure A closed circuit is formed with the motor 5.
Next, by switching the switching valve 14 to the left block 14b, the fluid pressure on the upstream side of the logic valve 13 (the outflow side of the fluid pressure motor 5) or the fluid of the charge pump 9 is placed in the spring chamber 13b of the logic valve 13. Pressure is selected and introduced by the shuttle valve 17 and the logic valve 13 is closed. At this time, the fluid from the charge pump 9 acts on the inflow side of the fluid pressure pump 4, and the fluid pressure pump 4 starts to be driven by this pressure. As a result, the fluid pressure motor 5 is also driven and power generation is started.
Therefore, when the driving force is weak, the fluid pressure pump 4 is driven by the fluid pressure of the charge pump 9 and the friction coefficient in the vicinity of the driving force is reduced, so that power generation is started and mechanical efficiency is improved.

また、切換弁１４が左側のブロック１４ｂに切り換えられた場合には、流体圧モータ５から流体は、絞り１５を介してタンク８へと導かれるため、チャージポンプ９からの流体を逃がすことが可能となる。従って、流体圧モータ５の流出側の圧力の上昇を抑えることが可能となる。   Further, when the switching valve 14 is switched to the left block 14b, the fluid is guided from the fluid pressure motor 5 to the tank 8 through the throttle 15, so that the fluid from the charge pump 9 can be released. It becomes. Therefore, it is possible to suppress an increase in pressure on the outflow side of the fluid pressure motor 5.

また、流体圧ポンプ４の吸入側にチェック弁１６を設けることにより、流体圧ポンプ４がチャージポンプ９の流量以上で駆動を始めた場合には、チャージポンプ９から必要な流体量を発電回路に供給することができる。   Further, by providing the check valve 16 on the suction side of the fluid pressure pump 4, when the fluid pressure pump 4 starts to be driven at a flow rate higher than that of the charge pump 9, a necessary amount of fluid is supplied from the charge pump 9 to the power generation circuit. Can be supplied.

本発明の発電回路は、一般の発電回路、特に、風力発電に利用することができる。   The power generation circuit of the present invention can be used for general power generation circuits, in particular, wind power generation.

従来のハイドロスタティック回路の説明図Illustration of a conventional hydrostatic circuit 従来の発電回路の説明図Illustration of a conventional power generation circuit 本発明の一実施例の発電回路の説明図Explanatory drawing of the electric power generation circuit of one Example of this invention

符号の説明Explanation of symbols

ａ 流体圧ポンプ
ｂ 流体圧モータ
ｃ 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
７ 流路
８ タンク
９ チャージポンプ
１０ 流路
１１ 流路
１２ 流路
１３ ロジック弁
１４ 切換弁
１５ 絞り
１６ チェック弁
１７ シャトル弁
a fluid pressure pump b fluid pressure motor c generator 1 windmill 2 drive shaft 3 speed reducer 4 fluid pressure pump 5 fluid pressure motor 6 generator 7 flow path 8 tank 9 charge pump 10 flow path 11 flow path 12 flow path 13 logic valve 14 Switching valve 15 Throttle 16 Check valve 17 Shuttle valve

Claims (4)

外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送られる流体により駆動される流体圧モータと、前記流体圧モータにより駆動される発電機と、前記流体圧ポンプ及び／又は流体圧モータに流体を補充するためのチャージポンプとを備える発電回路であって、前記発電回路は、前記流体圧モータの流出側の流路を遮断する方向に作用するロジック弁を備え、前記ロジック弁の下流側、且つ、前記流体圧ポンプの流入側に、前記チャージポンプが接続されることを特徴とする発電回路。   Fluid pressure pump driven by external force, fluid pressure motor driven by fluid sent from the fluid pressure pump, generator driven by the fluid pressure motor, fluid pressure pump and / or fluid pressure motor A power generation circuit including a charge pump for replenishing fluid, the power generation circuit including a logic valve acting in a direction to block a flow path on an outflow side of the fluid pressure motor, and downstream of the logic valve And the said charge pump is connected to the inflow side of the said fluid pressure pump, The electric power generation circuit characterized by the above-mentioned. 前記発電回路は、前記ロジック弁の開閉を制御するための切換弁を備え、前記ロジック弁は、前記流体圧モータの流出側の流路を遮断する方向に弁体を作用させるためスプリング室と、前記ロジック弁を開放する方向に流体圧を作用させるための対向室とを備え、前記ロジック弁を閉じる場合には、前記切換弁を切り換えて、前記スプリング室には、シャトル弁を介して、前記流体圧モータの流出側又は前記チャージポンプの流体圧が導入させるようにし、前記対向室側には、前記チャージポンプの流体圧と前記流体圧モータの流出側の流体圧とを導入させることを特徴とする請求項１に記載の発電回路。   The power generation circuit includes a switching valve for controlling opening and closing of the logic valve, and the logic valve has a spring chamber for acting a valve body in a direction to block a flow path on the outflow side of the fluid pressure motor; A counter chamber for applying fluid pressure in a direction to open the logic valve, and when the logic valve is closed, the switching valve is switched, and the spring chamber is connected to the spring valve via the shuttle valve. The outlet side of the fluid pressure motor or the fluid pressure of the charge pump is introduced, and the fluid pressure of the charge pump and the fluid pressure of the outlet side of the fluid pressure motor are introduced to the opposite chamber side. The power generation circuit according to claim 1. 前記切換弁を切り換えて、前記ロジック弁を閉じる場合には、前記流体圧モータの流出側は、絞りを介して、タンク側に接続されることを特徴とする請求項２に記載の発電回路。   3. The power generation circuit according to claim 2, wherein when the switching valve is switched and the logic valve is closed, the outflow side of the fluid pressure motor is connected to the tank side via a throttle. 前記切換弁を切り換えて、前記ロジック弁を閉じる場合には、前記ロジック弁の前記流体圧モータの流出側と、前記チャージポンプの流出側とをチェック弁を介して接続することを特徴とする請求項２又は３に記載の発電回路。
When switching the switching valve and closing the logic valve, the outflow side of the fluid pressure motor of the logic valve and the outflow side of the charge pump are connected via a check valve. Item 4. The power generation circuit according to Item 2 or 3.
JP2005275987A 2005-09-22 2005-09-22 Power generation circuit Expired - Fee Related JP4680019B2 (en)

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JP4786424B2 (en) * 2006-06-07 2011-10-05 ボッシュ・レックスロス株式会社 Fluid pressure circuit for wind power generation
KR101502240B1 (en) * 2013-12-13 2015-03-12 두산중공업 주식회사 Oil supply apparatus for gear box and emergency driving method of wind turbine system using the same
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

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JPS5941680A (en) * 1982-08-31 1984-03-07 Shimadzu Corp Apparatus utilizing wind force
JPS5941681A (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
JPH11280637A (en) * 1998-03-31 1999-10-15 Kayaba Ind Co Ltd Generator
JPH11287179A (en) * 1998-03-31 1999-10-19 Kayaba Ind Co Ltd Generating set
JPH11287178A (en) * 1998-03-31 1999-10-19 Kayaba Ind Co Ltd Generating set
JP2003278640A (en) * 2002-03-20 2003-10-02 Kazumi Machida Wind power generator
JP2005248738A (en) * 2004-03-02 2005-09-15 Fuchu Giken:Kk Operation control method for wind power generator

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Publication number Priority date Publication date Assignee Title
JPS51121120A (en) * 1975-04-15 1976-10-22 Susumu Sarutani Wind force power generator
JPS5941680A (en) * 1982-08-31 1984-03-07 Shimadzu Corp Apparatus utilizing wind force
JPS5941681A (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
JPH11280637A (en) * 1998-03-31 1999-10-15 Kayaba Ind Co Ltd Generator
JPH11287179A (en) * 1998-03-31 1999-10-19 Kayaba Ind Co Ltd Generating set
JPH11287178A (en) * 1998-03-31 1999-10-19 Kayaba Ind Co Ltd Generating set
JP2003278640A (en) * 2002-03-20 2003-10-02 Kazumi Machida Wind power generator
JP2005248738A (en) * 2004-03-02 2005-09-15 Fuchu Giken:Kk Operation control method for wind power generator

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