JPS59221473A - Pressure oil and lubricating oil devices for water turbine - Google Patents

Pressure oil and lubricating oil devices for water turbine

Info

Publication number
JPS59221473A
JPS59221473A JP58095291A JP9529183A JPS59221473A JP S59221473 A JPS59221473 A JP S59221473A JP 58095291 A JP58095291 A JP 58095291A JP 9529183 A JP9529183 A JP 9529183A JP S59221473 A JPS59221473 A JP S59221473A
Authority
JP
Japan
Prior art keywords
oil
tank
pressure oil
level
oil tank
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.)
Pending
Application number
JP58095291A
Other languages
Japanese (ja)
Inventor
Shinya Honma
本間　真也
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Fuji Electric Manufacturing 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 Fuji Electric Co Ltd, Fuji Electric Manufacturing Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP58095291A priority Critical patent/JPS59221473A/en
Publication of JPS59221473A publication Critical patent/JPS59221473A/en
Pending 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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • 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
    • Y02E10/20—Hydro energy

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Turbines (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

PURPOSE:To reduce the capacity of a lubricating oil tank by opening and closing a pipeline for supplying oil from the lubricating tank to a pressure oil tank in accordance with an oil level in the pressure oil tank. CONSTITUTION:An oil level control device 56 controlling the oil level in the pressure oil tank 44 is provided in the pipeline 58 connected between the pressure oil tank 44 and the lower lubricating oil tank 46 and supplying the oil from the lubricating oil tank 46 to the pressure oil tank 44. A float valve 62 closes the pipeline 58 when the oil level in the pressure oil tank 44 is higher than a predetermined level and opens the pipeline 58 when the level of the same tank 44 has become lower than the predetermined level, thus, the oil is supplied from the lower lubricating oil tank 46 to the pressure oil tank 44.

Description

【発明の詳細な説明】 〔発明の属する技術分野〕 本発明は、水車の軸受等に供給される潤滑油と。[Detailed description of the invention] [Technical field to which the invention pertains] The present invention relates to lubricating oil supplied to bearings of water turbines, etc.

ベーンサーボモーフ等に供給される圧油の制御に関し、
特に圧油ン貯溜する圧油クンク内の油面レベルｙ制御す
る手段７備えｆこ圧油潤滑油装置に関する。Regarding the control of pressure oil supplied to vane servomorphs, etc.
In particular, the present invention relates to a pressurized oil lubricating oil system equipped with means 7 for controlling the oil level in a pressurized oil container storing pressurized oil.

〔従来技術とその問題点〕[Prior art and its problems]

第１図には、パルプ水車１０と、該水車のための圧油潤
滑油（回路）装置とが示されている。この圧油潤滑油装
置は圧油タンク１４．下部潤滑油タンク１６及び上部潤
滑油タンク１８欠有して（・る。圧油タンク１４はモー
タ２０により、ガイドベーンサーボモータ２２及びラン
ナベーンサーボモータ２４にそれらを作動するための圧
油ン供給するとともに、それらモータから戻される圧油
を集油する。下部潤滑油タンク１６はモータ２５により
、潤滑油タンクの軸受に供給するためのものであり１図
示の装置においては、潤滑油を軸受部分に直１ジ供給す
るとともに、一部の潤滑油を上部４″１１滑油タンク１
８に供給し、同タンク内に一定量貯留しプこ後に軸受に
供給するようにしている。この−１＝　；３Ｂ潤滑油タ
ンク１８は、下↑Ｓｊ＋潤滑油タンクのモータ２５−３
の電源が停電して下部潤滑油タンクから軸受−＼潤滑／
ｌｌＩを直接供給できなくなった場合。FIG. 1 shows a pulp water wheel 10 and a pressure oil lubrication (circuit) system for the water wheel. This pressure oil lubricating oil system includes a pressure oil tank 14. The pressure oil tank 14 supplies pressure oil to the guide vane servo motor 22 and the runner vane servo motor 24 by the motor 20 to operate them. At the same time, the pressure oil returned from the motors is collected.The lower lubricating oil tank 16 is for supplying the lubricating oil to the bearings of the lubricating oil tank by the motor 25. In addition to directly supplying lubricating oil to the upper 4"11 lubricating oil tank 1
8, a certain amount is stored in the same tank, and then supplied to the bearing after pumping. This -1= ;3B lubricating oil tank 18 is lower ↑Sj + lubricating oil tank motor 25-3
Due to a power outage, the bearing-\lubrication oil was removed from the lower lubricant tank.
When it is no longer possible to directly supply llI.

水車の回転が停止トするまでの間、潤滑油タンクするこ
と乞主要な機能としている。Its main function is to provide a lubricating oil tank until the water wheel stops rotating.

このような１王油潤滑油装置においては、サーボモータ
へ供給された圧油の一部が（涌れて下部潤滑油タンクへ
混入され、その１こめ、圧油タンクの油面が低下して適
正な圧油供給かできなくなる虞れがある。このため、上
部潤滑油タンク１８にオーバーフロー管２６を設けてこ
れを圧油タンク１４に連；ＩＩＬ、下部７閏滑油タンク
１６からの潤滑油のｉｊτＰ、（圧油タンク１４へ９１
ｉ給するとともに、該圧油タンクにもオーバーフロー管
２Ｂ乞設けてこれ乞下部潤？ｌｉ％油タンク１６へ連通
ずることにより。In such a 1-king oil lubricating oil system, a part of the pressure oil supplied to the servo motor (springs out and mixes into the lower lubricating oil tank, and during that time, the oil level in the pressure oil tank drops and There is a risk that proper pressure oil supply may not be possible.For this reason, an overflow pipe 26 is provided in the upper lubricating oil tank 18 to connect it to the pressure oil tank 14; ijτP, (91 to the pressure oil tank 14
In addition to supplying water, an overflow pipe 2B is also installed in the pressure oil tank to provide water to the lower part. By communicating with the li% oil tank 16.

圧油タンク内の油面レベル乞一定に保っている。The oil level in the pressure oil tank is kept constant.

しかし、このような圧油潤滑油装置には２次のよう゛な
欠点がある。However, such a pressure oil lubricating oil system has the following secondary drawbacks.

すなわち、水車の始動に当ってはベーンの角度調節のた
め、圧油タンク１４かも一定量の圧油がサーボモータ及
びその管路に供給充填され、従って圧油タンク内の油面
レベルはオーバーフロー管の開口面より低下する。この
低下し１こ油面レベルは、当然、適正な圧油供給を行う
ために必要なレベルとされるが、この圧油潤滑油装置に
おいては上述の如き管路構成とされているため、この圧
油タンク内の油面が再びオーバーフロー管の開口のレベ
ルに達１−るまで、下部潤滑油タンクから上部潤滑油タ
ンクを通して油が供給されるが、その間。That is, when starting a water turbine, a certain amount of pressure oil is supplied to the servo motor and its pipeline from the pressure oil tank 14 in order to adjust the vane angle, and therefore the oil level in the pressure oil tank is lower than that of the overflow pipe. lower than the aperture surface. This lowered oil level is naturally considered to be the level necessary for proper pressure oil supply, but since this pressure oil lubricating oil system has the pipe configuration as described above, Oil is supplied from the lower lubricating oil tank through the upper lubricating oil tank until the oil level in the pressure oil tank reaches the level of the opening of the overflow pipe again.

圧油タンクからの下部潤滑油タンクへの油のオーバーフ
ローによる供給はない。There is no oil overflow supply from the pressure oil tank to the lower lubricating oil tank.

従って、下部潤滑油タンクには、適正な潤滑作用２行う
１こめの油の外に、圧油タンク内の油面が始動の際に一
旦下つ１こ後にオーバーフロー管２Ｂの開口のレベルま
で再び上昇するまでの量（換言すれば、始動に当り圧油
タンクからベーンサーボモータ及びその管路へ供給充填
される量）の油乞下７７Ｂ吊′１滑油タンク内に余分に
用意しなげればならない。〒ノｒつて＊　ｑ！ｆに水車
が大型のものとなりべ一ンーリーボモータ等の容ｊ４１
．が大きくなると、上記の余分に用意しなげればならな
い油が大量になり。Therefore, in addition to the oil in the lower lubricating oil tank that provides proper lubrication, the oil level in the pressure oil tank drops once during startup and then returns to the level of the opening of the overflow pipe 2B. Prepare an extra amount of oil in the lubricant tank (lower 77B hanging '1) for the amount of oil needed to rise (in other words, the amount that is supplied from the pressure oil tank to the vane servo motor and its pipelines at startup). Must be. 〒nort* q! The water wheel was large in f, and the capacity of the basin-ribo motor etc. j41
．． As the size increases, a large amount of oil will need to be prepared in addition to the above.

下部潤滑油タンクを大容量のものにしなければならない
。The lower lubricating oil tank must have a large capacity.

〔発明の目的〕[Purpose of the invention]

本発明は、［二連の従来装置１ｔにおいて必“及とされ
ていプこ余分の油鼠乞不四とすることにより、その分た
け当該圧油潤滑重装［べ、内の総油量を減少し。The present invention reduces the total amount of oil in the pressurized oil lubrication equipment by that amount by eliminating the extra oil required in the conventional two-unit 1 ton equipment. Decreased.

且つ　、１１１．］滑油タンクの容置も小さいもので済
むようにしｌこ圧／ｌＩ］潤滑油装置欠提供することを
目的としている。And, 111. ] The purpose is to reduce the capacity of the lubricating oil tank and to provide a lubricating oil system that does not require a lubricating oil system.

〔発明の′波点〕['Point of invention']

本イ１−明に係る圧油潤滑油装置６は、圧油タンクと。 The pressure oil lubricating oil device 6 according to the present invention has a pressure oil tank.

τ閏滑油タンクと、／閏滑油タンクから１上浦タンクへ
油乞供給するｌこめの貿・路と、１上油タンク内の油面
かｊに油供給馨適正に行つｆこめの所定レベル以上のと
きは上記管路ケ閉じ、同油面が所定レベル以下に／、ｃ
ると同（７ｇ；　Ｂ　　に聞いて潤滑油タンクから圧油
タンクべの給油ができるようにする油面レベル制菌装置
とを備えている。τ oil tank, 1 oil supply tank, 1 oil supply tank, 1 oil supply tank, 1 oil supply tank, 1 oil supply tank, 1 oil supply tank, 1 oil supply tank, 1 oil supply tank, 1 oil supply line, When the oil level is above a predetermined level, the above pipe is closed, and the oil level is below a predetermined level.
It is also equipped with an oil level sterilization device that allows the pressure oil tank to be refilled from the lubricating oil tank.

この装置によれば、水車の運転時における圧油タンクの
油面の適正レベルを、当該水車の始動時に圧油乞ベーン
サーボモータ等に送給することにより低下し１こレベル
とし、漏油により該圧油タンクの曲面が所定の基準レベ
ルより低下した場合。According to this device, the appropriate level of the oil level in the pressure oil tank during operation of the water turbine is lowered to one level by supplying oil to the pressure oil vane servo motor, etc. when starting the water turbine, and the oil level is reduced to 1 level due to oil leakage. When the curved surface of the pressure oil tank falls below a predetermined standard level.

その低下分だけの油量が潤滑油供給タンクから供給され
る。従って、上述した従来装置において必要とされてい
１こ「余分の油量」が不要となる。The amount of oil corresponding to the decrease is supplied from the lubricating oil supply tank. Therefore, the "extra amount of oil" required in the conventional device described above becomes unnecessary.

〔発明の実施例〕[Embodiments of the invention]

以下１本発明の実施例ヲ添伺図面の第２図に基づき詳細
に説明する。Hereinafter, one embodiment of the present invention will be described in detail with reference to FIG. 2 of the accompanying drawings.

第２図にはバルブ型水車４０と、該水車に圧油供給及び
潤滑油供給２行うための本発明に係る圧油潤滑油装置と
が示されている。FIG. 2 shows a valve type water turbine 40 and a pressure oil lubricating oil device according to the present invention for supplying pressure oil and lubricating oil 2 to the water turbine.

この圧油潤滑油製ｄば、圧油タンク４４．下部潤滑油タ
ンク４６及び上部潤滑油タンク４８を有しており、これ
らタンクは前述の従来の装置のものと同様の機能２有し
ている。すなわち、圧油りンク４４はモータ５０により
、ガイドベーンサーボモータ５２及びランナベーンサー
ボモータ５４に圧油乞供給するとともに、それらモータ
がら戻される圧油７集油する。下部潤滑油タンクはモー
タ５５により、潤滑油タンクの軸受に直接供給するとと
もに、その一部を上部タンク４８に供給し。This pressure oil lubricant tank 44. It has a lower lubricating oil tank 46 and an upper lubricating oil tank 48, which have functions 2 similar to those of the prior art device described above. That is, the pressure oil link 44 supplies pressure oil to the guide vane servo motor 52 and the runner vane servo motor 54 by the motor 50, and also collects the pressure oil 7 returned from these motors. The lower lubricating oil tank is supplied by a motor 55 directly to the bearings of the lubricating oil tank, and a portion thereof is also supplied to the upper tank 48 .

同タンク内に一定量貯溜しｆこ後に軸受に供給するよう
にしている。A certain amount of fluid is stored in the same tank and then supplied to the bearing.

本発明の装置において特徴とするところは、下部潤滑油
タンク４６と圧油タンク４４との間に設定され１こ圧油
タンク内の油面レベルを制御する油＋（４ルベル すなわちこの装置５６は，圧油タンク４４と下？τＩＳ
潤滑油タンク４６との間に接続されてモータ５５によっ
て／ｌｈ７＜潤滑油タンク４６から圧油タンク４４へ給
油するための管路５８内に設けられている。The feature of the device of the present invention is that it is set between the lower lubricating oil tank 46 and the pressure oil tank 44 and controls the oil level in the pressure oil tank. , Pressure oil tank 44 and bottom?τIS
It is connected between the lubricating oil tank 46 and is provided in a conduit 58 for supplying oil from the lubricating oil tank 46 to the pressure oil tank 44 by the motor 55.

図示のように，このレベル制御装置５６は，圧油タンク
４４に連通されて内部の油面が圧油タンク４４と同じレ
ベルに維持されるようにした制御チャンバ６０と．該チ
ャンバ６０内の油面レベルに従って作動されるフロート
弁６２と２有しており。As shown, the level control device 56 includes a control chamber 60 that communicates with the pressure oil tank 44 to maintain the oil level therein at the same level as the pressure oil tank 44. It has float valves 62 and 2 which are operated according to the oil level in the chamber 60.

該フロート弁は圧油タンク内の油面が圧油供給を適正に
行つための所定レベル以上のときは管路５８を閉じ，同
所定レベル以下になると管路５８欠開いて，下部潤滑油
タンク４６からの油を圧油タンクに供給して．同圧油タ
ンク内の油面乞一定に保つ。図示の実施例においては．
管路５８内の制御チャンバ６０より上流の位置にオーバ
ーフローチャンバ６４が設けられている。すなわち該チ
ャンバ６４内には，下部潤滑油タンク４６に連通され１
こオーバーフロー管６６が設けられており，該管の開口
は圧油タンク４４の上記所定レベルより高い位置に設定
され．圧油タンクへの油の供給が常に一定圧で行われる
ようにしである。圧油タンク４４内に設定され，下部タ
ンクに連通されているオーバーフロー管７０は，水車の
始動前に圧油タンク４４内に用意される油量を一定にす
るブこめのものである。The float valve closes the pipe 58 when the oil level in the pressure oil tank is above a predetermined level for properly supplying pressure oil, and when the oil level falls below the predetermined level, the pipe 58 is opened and the lower lubricating oil is removed. Oil from tank 46 is supplied to the pressure oil tank. Keep the oil level in the same pressure oil tank constant. In the illustrated embodiment.
An overflow chamber 64 is provided within conduit 58 upstream from control chamber 60 . That is, in the chamber 64 there is a lubricating oil tank 46 connected to the lower lubricating oil tank 46.
An overflow pipe 66 is provided, and the opening of the pipe is set at a position higher than the predetermined level of the pressure oil tank 44. This is to ensure that oil is always supplied to the pressure oil tank at a constant pressure. An overflow pipe 70 set in the pressure oil tank 44 and communicating with the lower tank is used to keep the amount of oil prepared in the pressure oil tank 44 constant before starting the water turbine.

運転に当っては．始動前にオーバーフロー管７０の開口
の高さまで貯溜された圧油タンク４４内の油は．始動と
ともにランナベーンサーボモータ５４。Regarding driving. The oil in the pressure oil tank 44 that has accumulated up to the height of the opening of the overflow pipe 70 before starting is... When starting, the runner vane servo motor 54 is activated.

カイトベーンザーボモーク５２及びその管路に供給元ｊ
道され，その分だけ液面が例えば第２図に示す如（下る
。本発明に係る装置においては，この低下した曲面レベ
ルを適正な圧油供給を行うためのレベルどして運転され
る。そして、サーボモータ５２　、　５４やその管路か
ら圧油が漏れて下部潤滑油タンク４６へ混入され，それ
により圧油タンクの油面が一定以北下ると，フロート弁
６２が開き。Supply source j for kite benzerbomoke 52 and its conduit
The liquid level decreases accordingly, as shown in FIG. 2, for example. In the apparatus according to the present invention, this lowered curved surface level is used as a level for proper pressure oil supply. Pressure oil leaks from the servo motors 52, 54 and their pipelines and enters the lower lubricating oil tank 46, and when the oil level in the pressure oil tank drops below a certain level, the float valve 62 opens.

その低下した分だけのｆｔｂ　敏が下部潤滑油タンク４
６から供給され．圧油タンクの油面レベルは一定に保た
れる。The lower lubricating oil tank 4 is equivalent to the decrease in FTB.
Supplied from 6. The oil level in the pressure oil tank is kept constant.

〔発明の効果〕〔Effect of the invention〕

叙りのように．本発明に係る圧油潤滑油装置においては
．圧油タンクの油面乞．始動に当って圧油をベーンサー
ボモータ等に供給充填することにより低下した油面レベ
ルに維持した状態で運転できるようにし１こので，前述
の従来装置において必安どされていた低下分の油量ヲ補
充するための油乞必安どせず．それだけ当該圧油潤滑油
装置で必要とされる総油量が少なくなり．潤滑油タンク
の容量も小さくすることができる。Like a story. In the pressure oil lubricating oil device according to the present invention. Low oil level in pressure oil tank. By supplying pressurized oil to the vane servo motor, etc. at startup, it is possible to maintain the oil level at a lower level. There is no need to beg for oil to replenish the quantity. The total amount of oil required by the pressure oil lubricating oil system is correspondingly reduced. The capacity of the lubricating oil tank can also be reduced.

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

第１図は．バルブ型水車と従来の圧油潤滑油装置２示す
概略図。 第２図は，パルプ型水車と本発明に係る圧油潤滑油装置
を示す概略図である。 ４０・・・・・・水　車　　　　　４４・・・・・・圧
油タンク４６・・・・・・潤滑油タンク　　５６・・・
・・・油面レベル制御装置５８・・・・・・管　路 特許出願人　　富士電機製造株式会社Figure 1 is. FIG. 2 is a schematic diagram showing a valve type water turbine and a conventional pressure oil lubricating oil device 2. FIG. 2 is a schematic diagram showing a pulp type water turbine and a pressure oil lubricating oil device according to the present invention. 40... Water wheel 44... Pressure oil tank 46... Lubricating oil tank 56...
...Oil level control device 58...Pipe patent applicant Fuji Electric Manufacturing Co., Ltd.

Claims (1)

【特許請求の範囲】 １）水利の軸受等に供給され、また、同軸受等から戻さ
れる潤滑油を貯溜する潤滑油タンクと。 水車のベーンサーボモーフ等に供給され、また、同モー
ク等から戻される作動用の圧油を貯溜−４−る圧？内タ
ンクと。 潤滑油タンクから圧油タンクへ油乞供給する１こめの管
路と。 圧油タンク内の油面が適正な圧油供給７行う１こめの所
定のレベル以上のときは上記管路２閉じ。 四油面が所定レベル以下になると同管路を開いてｄ到滑
抽タンクから圧油タンクへの給油ができるようにする油
面レベル制御装置と。 暑備える水車の圧油潤滑油装置。 ２）特許６１１ｊ求の範囲第１項に記載の装置において
。 上記油面レベル制御装置が、圧油タンクの油面のレベル
に従って作動するフロート弁から構成されている圧油潤
滑油装置。[Scope of Claims] 1) A lubricating oil tank that stores lubricating oil that is supplied to and returned from irrigation bearings, etc. The pressure that stores operating pressure oil that is supplied to the vane servo morph of the water turbine and returned from the servo morph, etc.? with an inner tank. One pipe line that supplies oil from the lubricating oil tank to the pressure oil tank. When the oil level in the pressure oil tank is above a predetermined level for proper pressure oil supply 7, the pipe 2 is closed. An oil level control device that opens the pipe when the oil level falls below a predetermined level so that oil can be supplied from the extraction tank to the pressure oil tank. Pressure oil lubrication system for water turbines to prepare for the heat. 2) In the device described in Section 1 of the scope of patent No. 611j. A pressure oil lubricating oil system, wherein the oil level control device is comprised of a float valve that operates according to the oil level of the pressure oil tank.
JP58095291A 1983-05-30 1983-05-30 Pressure oil and lubricating oil devices for water turbine Pending JPS59221473A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58095291A JPS59221473A (en) 1983-05-30 1983-05-30 Pressure oil and lubricating oil devices for water turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58095291A JPS59221473A (en) 1983-05-30 1983-05-30 Pressure oil and lubricating oil devices for water turbine

Publications (1)

Publication Number Publication Date
JPS59221473A true JPS59221473A (en) 1984-12-13

Family

ID=14133667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58095291A Pending JPS59221473A (en) 1983-05-30 1983-05-30 Pressure oil and lubricating oil devices for water turbine

Country Status (1)

Country Link
JP (1) JPS59221473A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1077229C (en) * 1996-04-29 2002-01-02 克瓦那涡轮机股份公司 Hydraulic machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1077229C (en) * 1996-04-29 2002-01-02 克瓦那涡轮机股份公司 Hydraulic machine

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