JPS60204973A - Multistage hydraulic machinery - Google Patents

Multistage hydraulic machinery

Info

Publication number
JPS60204973A
JPS60204973A JP59061599A JP6159984A JPS60204973A JP S60204973 A JPS60204973 A JP S60204973A JP 59061599 A JP59061599 A JP 59061599A JP 6159984 A JP6159984 A JP 6159984A JP S60204973 A JPS60204973 A JP S60204973A
Authority
JP
Japan
Prior art keywords
stage
balance hole
balance
chamber
runner
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
JP59061599A
Other languages
Japanese (ja)
Inventor
Kentaro Ichikawa
健太郎 市川
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP59061599A priority Critical patent/JPS60204973A/en
Publication of JPS60204973A publication Critical patent/JPS60204973A/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
    • F03B11/06—Bearing arrangements
    • F03B11/063—Arrangements for balancing axial thrust
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Turbines (AREA)

Abstract

PURPOSE:To reduce the axial thrust and permit ther magnitude of water thrust to be adjusted, by opening the second balance hole into the outer-peripheral region of the inside back-pressure chamber of the min. pressure stage runner. CONSTITUTION:An annular chamber 26 is formed into an intermediate construction body 15, faced to the exit of the passage 10b of the first balance hole 10. A plurality of the second balance holes 27 which are opened into the annular chamber 26 are formed into the intermediate construction body 15. The other edge of the second balance hole 27 is opened in the outer-peripheral region of an inside runner chamber 23 close to a runner seal 22. Therefore, the boundary-condition point shifts outside and a thrust force can be reduced. Further, the section of the passage of the first balance hole 10 can be made adjustable by operating a valve piece 30.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は多段水力機械に係り、特に多段水力機械の低圧
段ランナに作用する水スラストを調整できるようにした
多段水力機械に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a multi-stage hydraulic machine, and more particularly to a multi-stage hydraulic machine in which water thrust acting on a low-pressure stage runner of the multi-stage hydraulic machine can be adjusted.

〔発明の技術的背景と問題点〕[Technical background and problems of the invention]

一般に水力機械のランチの前後に作用する水圧力の合力
は異なり、その水圧差が軸推力として主軸に作用する。Generally, the resultant force of the water pressure that acts before and after the launch of a hydraulic machine is different, and this difference in water pressure acts on the main shaft as a axial thrust force.

この軸推力を小さくするために、ランチの前後をバラン
ス管やバランス孔で連絡して軸推力を可及的に小さくす
る工夫が従来よりなされている。多段水力機械の場合に
も同様の問題が生じ各段のランナの前後をバランス管や
バランス孔で連絡している。第１図は主軸１上に高圧段
ランナ２と低圧段ランナ３とを設けた従来の２段ポンプ
水車に対して軸推力を低減する装着を適用した例を示し
ている。この従来例では高圧段ランナ２の内側背圧室４
よシバランス管５．５が導出され、このバランス管５は
、高圧段ランナ２の出口側より導出されたバランス管６
と接続され、その接続点に流量調整弁７が組込まれてい
る。また、低圧段ランナ３における内側背圧室８とドラ
フトチューブ内の吸出し室９とは主軸１内に形成された
バランス孔１０によって連通されている。このように構
成された従来の２段ポンプ水車の運転中における低圧段
ランナ３の内側背圧室８内の圧力分布を調べると、第２
図に示したようになっている。In order to reduce this axial thrust, conventional efforts have been made to connect the front and rear of the launch with a balance pipe or balance hole to reduce the axial thrust as much as possible. A similar problem occurs in multi-stage hydraulic machines, where the front and rear of each stage's runners are connected by balance pipes or balance holes. FIG. 1 shows an example in which a conventional two-stage pump water turbine in which a high-pressure stage runner 2 and a low-pressure stage runner 3 are provided on the main shaft 1 is fitted to reduce the axial thrust. In this conventional example, the inner back pressure chamber 4 of the high pressure stage runner 2
A balance pipe 5.5 is led out, and this balance pipe 5 is connected to a balance pipe 6 led out from the outlet side of the high pressure stage runner 2.
A flow rate regulating valve 7 is installed at the connection point. Further, the inner back pressure chamber 8 in the low pressure stage runner 3 and the suction chamber 9 in the draft tube are communicated through a balance hole 10 formed in the main shaft 1. Examining the pressure distribution inside the inner back pressure chamber 8 of the low pressure stage runner 3 during operation of the conventional two stage pump turbine configured as described above, it is found that the second
It is as shown in the figure.

すなわち、ドラフトチューブ側のバランス孔１０の開口
位置での圧力をＰｌ、とじた場合、背圧ＷＩＪＩの開口
部の半径がドラフト側と同じならば、背圧室側における
開口部の圧力は、Ｐｏに管路損失△Ｐを加えたｐ、＝ｐ
、＋△Ｐとなる。したがって、低圧段の内側背圧室内の
圧力分布は、最内周部における圧力Ｐ１　を境界条件と
して遠心水頭の影響による放物線分布となシ、ドラフト
チューブ側との圧力バランスを考えた場合、図中−ツチ
ングを施した部分の面積を積分した大きさに相当する下
向きスラストが残存する。その結果、発電機のスラスト
軸受の軸受負荷が増大し好ましくなかった。That is, when the pressure at the opening position of the balance hole 10 on the draft tube side is Pl, if the radius of the opening of the back pressure WIJI is the same as that on the draft side, the pressure at the opening on the back pressure chamber side is Po p, which is the sum of pipe loss △P, = p
, +ΔP. Therefore, the pressure distribution in the inner back pressure chamber of the low pressure stage is a parabolic distribution due to the influence of the centrifugal water head with the pressure P1 at the innermost periphery as a boundary condition.When considering the pressure balance with the draft tube side, - A downward thrust corresponding to the integrated area of the pinched portion remains. As a result, the bearing load on the thrust bearing of the generator increased, which was undesirable.

また主軸内に形成されたバランス孔の流路面積は、一定
不変であるために、中間シール部の間隙の大きさが経年
変化を起してスラストが増大したとしても調整すること
ができなかった。Furthermore, since the flow path area of the balance hole formed in the main shaft remains constant, it cannot be adjusted even if the size of the gap in the intermediate seal changes over time and the thrust increases. .

〔発明の目的〕[Purpose of the invention]

そこで、本発明の目的は、最高圧段部から最低圧段部ま
での各段部にランチを備え、各段部が返し通路によって
連絡された多段水力機械の低圧段ランチに作用する軸ス
ラストを低減し、かつ調整できるようにした多段水力機
械を提供することにある。Therefore, an object of the present invention is to provide a launch in each stage from the highest pressure stage to the lowest pressure stage, and to reduce the axial thrust acting on the low pressure stage launch of a multistage hydraulic machine in which each stage is connected by a return passage. The object of the present invention is to provide a multi-stage hydraulic machine which can be reduced and adjusted.

〔発明の概要〕[Summary of the invention]

上記目的を達成するために、本発明は、最高圧段部から
最低圧段部までの各段部のランチが主軸上に固着され、
各段部のランチ室が返し通路によって連絡された多段水
力機械においてｌ１ＩＬ低圧段ランナの背圧室側と吸出
し室とが第１のバランス孔で連絡されこの第１のバラン
ス孔が主軸内に形成されると共に、この第１のバランス
孔と整合し最低圧段ランナの内側背圧室の外周領域に開
口した第２のバランス孔を中間構造体の側に形成したこ
とを特徴とするものである。In order to achieve the above object, the present invention provides that the launch of each stage from the highest pressure stage to the lowest pressure stage is fixed on the main shaft,
In a multistage hydraulic machine in which the launch chambers of each stage are connected by a return passage, the back pressure chamber side of the l1IL low pressure stage runner and the suction chamber are connected by a first balance hole, and this first balance hole is formed in the main shaft. In addition, a second balance hole is formed on the intermediate structure side, which is aligned with the first balance hole and opens in the outer peripheral area of the inner back pressure chamber of the lowest pressure stage runner. .

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

以下本発明による多段水力機械の実施例を第３図乃至第
６図を参照して説明する。Embodiments of the multi-stage hydraulic machine according to the present invention will be described below with reference to FIGS. 3 to 6.

第３図は、本発明を２段ポンプ水車に適用した例を示し
、第１図に示した部材と同一部材には同一符号を付して
示しである。FIG. 3 shows an example in which the present invention is applied to a two-stage pump water turbine, and the same members as those shown in FIG. 1 are denoted by the same reference numerals.

主軸１上には、軸方向の距離をおいて高圧段ランナ２と
低圧段ランナ３とが固着されており、高圧段ランナ２は
高圧段ランナ室１１内に収容され、低圧政ランナ３は低
圧段ランチ室１２内に収容されている。上記高圧段ラン
チ室１１の下側は下カバー１３で被われ、一方、低圧段
ランナ室１２の下方は下カバー１４で被われている。A high-pressure stage runner 2 and a low-pressure stage runner 3 are fixed on the main shaft 1 with a distance in the axial direction. It is accommodated in the tiered lunch room 12. The lower side of the high-pressure stage launch chamber 11 is covered with a lower cover 13, while the lower side of the low-pressure stage runner chamber 12 is covered with a lower cover 14.

上記下カバー１３と下カバー１４との間には、中間構造
木１５が配置され、この中間構造体１５内には中間流路
１６が形成され、この流路内に掬数枚の返し羽根１７が
配置されている。上記中間構造体１５の外側には外筒１
８が配置され、この外筒１８内に中間流路１６と低圧段
ランナ室１２とを連絡する返し流路】９が形成されてい
る。この返し流路１９の出口には、低圧段ランナ室１２
に流入する水の量を調節するための可動ガイドベーン加
が円形翼列状に配置されている。An intermediate structure tree 15 is disposed between the lower cover 13 and the lower cover 14, and an intermediate flow path 16 is formed in this intermediate structure 15, and several return blades 17 are formed in this flow path. is located. An outer cylinder 1 is provided on the outside of the intermediate structure 15.
8 is disposed, and a return flow path 9 is formed in this outer cylinder 18 for communicating between the intermediate flow path 16 and the low pressure stage runner chamber 12. At the outlet of this return flow path 19, a low pressure stage runner chamber 12 is provided.
Movable guide vanes are arranged in a circular cascade to adjust the amount of water flowing into the tank.

前記中間構造木１５は、低圧段ランチ室１２の上カバー
をも兼ねるものであって、その下面と低圧段ランナ３の
背面との間にはランチ背圧室２１が形成されている。こ
のランナ背圧室２１は、ランナシール部ｎを境として内
側背圧室おと外側背圧室Ｕとに分けられている。The intermediate structure tree 15 also serves as an upper cover for the low-pressure stage launch chamber 12, and a launch back pressure chamber 21 is formed between its lower surface and the back surface of the low-pressure stage runner 3. The runner back pressure chamber 21 is divided into an inner back pressure chamber and an outer back pressure chamber U with the runner seal portion n as a boundary.

また、前記主軸１には、低圧段ランナ３に作用する水ス
ラストを平衡させるためのノくランス孔１０が穿設され
ており、このバランス孔１０は、吸出し室δ側に開口す
る通路１０ａとランナ背圧室側に開口する通路１０ｂと
両者を連絡する連絡路１００とから構成されている。Further, the main shaft 1 is provided with a balance hole 10 for balancing the water thrust acting on the low pressure stage runner 3, and this balance hole 10 is connected to a passage 10a opening toward the suction chamber δ side. It is composed of a passage 10b that opens toward the runner back pressure chamber and a communication passage 100 that communicates the two.

そして、本発明によれば、上記バランス孔１００通路１
０ｂの出口に面して、環状室部が中間構造体１５の側に
形成され、さらにこの環状室部に開口するようにして、
複数個の第２のバランス孔ｎが中間構造木１５内に形成
されている。これらの各ノくランス孔ｎの出口は、ラン
ナシールｎに近い内側ランチ室乙の外局領域に開口して
いる。また、上記環状室あの上下にはシールリング沼、
２８が配置され、環状室局内の水が主軸１の外周面を伝
って外部へ漏水するのを防いでいる。According to the present invention, the balance hole 100 passage 1
An annular chamber is formed on the side of the intermediate structure 15 facing the outlet of 0b, and further opens into the annular chamber,
A plurality of second balance holes n are formed in the intermediate structure tree 15. The outlet of each of these lance holes n opens into the outer region of the inner launch chamber B near the runner seal n. In addition, there is a seal ring swamp above and below the annular chamber,
28 is arranged to prevent water in the annular chamber from leaking to the outside along the outer peripheral surface of the main shaft 1.

本発明の一実施例は、このように構成されているから、
中間構造体１５内に形成された第２のバランス孔ｎの水
はランチの旋回による影響を受けず、さらにシールリン
グ２８．２８によって外部と圧力的にしゃ断されている
ため、吸出し室５の圧力をＰｏとしたとき、環状室局内
の圧力ＰＩはＰ、に損失△Ｐを加えた太きさと々す、こ
の環状室あ内の圧力ｐ、が内側背圧室乙の外周領域の圧
力となる。Since one embodiment of the present invention is configured as described above,
The water in the second balance hole n formed in the intermediate structure 15 is not affected by the rotation of the launch, and is also pressure-blocked from the outside by the seal rings 28, 28, so that the pressure in the suction chamber 5 When is Po, the pressure PI in the annular chamber is P, plus the loss △P, and the pressure inside this annular chamber A, p, is the pressure in the outer peripheral area of the inner back pressure chamber B. .

ところで、本発明によれば、前記主軸１内に形成された
第１のバランス孔１０の流路面償は弁体Ｉを軸方向へ動
かすことによって調節できるようになっている。この弁
体（資）は、第４図から明らかなように１主軸ｌ内に軸
心に沿って形成された弁孔３１内に収容された操作ロッ
ド３２によってバランス孔１３内への進入量を調節でき
るようになっている。According to the present invention, the flow path surface compensation of the first balance hole 10 formed in the main shaft 1 can be adjusted by moving the valve body I in the axial direction. As is clear from FIG. 4, this valve body (material) controls the amount of entry into the balance hole 13 by an operating rod 32 housed in a valve hole 31 formed in one main shaft l along the axis. It is adjustable.

この操作ロッド３２の外端部にはおねじ３３が形成され
、このおねじ３３が性根３４の外側へ突き出し、固定カ
ット３５によって固定されている。弁体（９）を軸方向
へ動かすときには、固定ナツト３５を弛め、操作ロッド
３２を回転させて弁体間のバランス孔１３内形成された
下部案内軸受を示しておシ、この下部案内軸受あによっ
て主軸１の下端部が支承されている。A male thread 33 is formed at the outer end of the operating rod 32, and this male thread 33 protrudes to the outside of the genital root 34 and is fixed by a fixing cut 35. When moving the valve body (9) in the axial direction, loosen the fixing nut 35 and rotate the operating rod 32 to expose the lower guide bearing formed in the balance hole 13 between the valve bodies. The lower end of the main shaft 1 is supported by the support.

上述したように、固定ナツト３５を弛めて操作ロッド３
２を動かすことにより弁Ｈ３０を移動させてバランス孔
１０の開口面積を調節でき、損失水頭ΔＰの値を最適値
に調節することが可能となる。As mentioned above, loosen the fixing nut 35 and remove the operating rod 3.
By moving the valve H30, the opening area of the balance hole 10 can be adjusted by moving the valve H30, and the value of the head loss ΔP can be adjusted to the optimum value.

次に第５図を参照して本発明を適用した場合における低
圧段ランナ３の内側背圧室ｎ内における圧力分布を考察
する。図中、２点ｅａＶｉ、第２図に示した従来の圧力
分布を示しているのに対し、実線が本発明を適用した場
合における圧力分布の状態を示している。この図から明
らかなように、本発明においては中間構造体１５内に第
２のノくランヌ孔２′７ヲ形成して、その出口を内側背
圧室るの外側領域に開口させたから、境界条件点が外側
へ移動し、その結果、ドラフト側との差圧により生ずる
スラスト力（ハツチングを施した領域の積分値）を大幅
に減少させることが可能となる。しかも、弁体（資）を
調節することによって損失水頓△Ｐを調節し、水スラス
トの大きさを調節することが可能となる。Next, with reference to FIG. 5, the pressure distribution in the inner back pressure chamber n of the low pressure stage runner 3 when the present invention is applied will be considered. In the figure, two points eaVi indicate the conventional pressure distribution shown in FIG. 2, while the solid line indicates the state of the pressure distribution when the present invention is applied. As is clear from this figure, in the present invention, the second lance hole 2'7 is formed in the intermediate structure 15, and the outlet thereof is opened in the outer region of the inner back pressure chamber. The condition point moves outward, and as a result, it becomes possible to significantly reduce the thrust force (integral value of the hatched area) generated by the differential pressure with the draft side. In addition, by adjusting the valve element, it is possible to adjust the water loss ΔP and the magnitude of the water thrust.

次に第６図を参照して本発明の他の実施例をＮｔ２明す
る。この実施例は、中間構造木１５の内に第２のバラン
ス孔ｎを穿孔することに代え、檜数個のリプ羽、３８・
・・・・・３８を放射方向に配置したうえでそれらの下
面に環状の棚板３９を取付けた例であって、第２のバラ
ンス孔２７に相当する部分の製作が容易になる。Next, another embodiment of the present invention will be explained with reference to FIG. In this embodiment, instead of drilling the second balance hole n in the intermediate structure tree 15, several lip holes, 38.
. . 38 are arranged in the radial direction and an annular shelf plate 39 is attached to the lower surface thereof, making it easier to manufacture the portion corresponding to the second balance hole 27.

〔発明の効果〕〔Effect of the invention〕

以上の説明から明らかなように、本発明によれば、低圧
段ランチの内側背圧室と吸出し室とをバランス孔で連絡
し、内側背圧室へのバランス孔の開口をランチの内側背
圧室の外周領域に設定したから、低圧段ランナに作用す
る水スラストヲ低減することができると共に、水スラス
トの大きさを調節することもできる。As is clear from the above description, according to the present invention, the inner back pressure chamber of the low pressure stage launch and the suction chamber are connected through the balance hole, and the opening of the balance hole to the inner back pressure chamber is connected to the inner back pressure chamber of the launch. Since it is set in the outer peripheral area of the chamber, it is possible to reduce the water thrust acting on the low pressure stage runner, and also to adjust the magnitude of the water thrust.

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

第１図は従来の２段ポンプ水車を示した縦断面図、Ｍ２
図は従来の２段ポンプ水車の低圧段ランナの要部と内側
背圧室における水圧の分布状態を示し次説明図、第３図
は本発明による２段ポンプ水車を示した縦断面図、第４
図は水車主軸の下部構造を示した縦断面図、第５図は本
発明による２段ポンプ水車の低圧段ランナの要部と内側
背圧室における水圧分布の状態を示した説明図、第６図
は本発明の他の実施例による２段ポンプ水車の要部を示
した縦断面図である。 ３・・・低圧段ランナ、１５・・・中間構造体、る・・
・内側背圧室、１０・・・第１のバランス孔、５・・・
吸出し室、佑・・・環状室、ｎ・・・第２のバランス孔
、Ｉ・・・弁体、３２・・・操作ロッド。 出願人代理人　猪　股　清 第２目 豹３目 躬４繍 第５回Figure 1 is a vertical cross-sectional view showing a conventional two-stage pump turbine, M2
The figure shows the distribution of water pressure in the main parts of the low-pressure stage runner and the inner back pressure chamber of a conventional two-stage pump-turbine, and the following is an explanatory diagram. 4
The figure is a vertical sectional view showing the lower structure of the main shaft of the water turbine. The figure is a longitudinal sectional view showing the main parts of a two-stage pump water turbine according to another embodiment of the present invention. 3...Low pressure stage runner, 15...Intermediate structure, Ru...
-Inner back pressure chamber, 10...first balance hole, 5...
Suction chamber, Yu...annular chamber, n...second balance hole, I...valve body, 32...operating rod. Applicant's agent Kiyoshi Inomata 2nd eye Leopard 3rd eye 4th embroidery 5th

Claims (1)

【特許請求の範囲】 １）最高圧段部から最低圧段部までの各段部のランナが
主軸上に固着され、各段部のランナ室が返し通路によっ
て連絡された多段水力機械において；最低圧段ランナの
背圧室側と吸出し室とが涼１のバランス孔で連絡されこ
の第１のバランス孔が主軸内に形成されると共に、この
第１のバランス孔と整合し最低圧段ランスの内側背圧室
の外周領域に開口した第２のバランス孔を中間構造体の
側に形成したことを特徴とする多段水力機械。 ２）上記第２のバランス孔は、中間構造体内：’ｌ　ｂ
ｋ射方向に穿孔された複数のバランス比からなり、これ
らのバランス孔の出口が内側背圧室の夕）周領域に開口
していることを特徴とする特＆’ｆ　請求の範囲第１項
に記載の多段水力機械。 ３）前記第２のバランス孔は、放射方向に中間構構成し
たことを特徴とする特許請求の範囲第１項に記載の多段
水力機械。 ４）前記＠ｌのバランス孔には流量ｖ／４整弁が設けら
れたことを特徴とする特許請求の範囲第１項に記載の多
段水力機械。 ５）前記姫を調整弁は、主軸の細心に沿って形成された
弁孔とこの弁比内に低装されて軸方向に動く弁体と、こ
の弁体を軸方向に動かす操作ロンドとから構成したこと
を特徴とする特許請求の範囲第１項に記載の多段水力機
械。[Claims] 1) In a multi-stage hydraulic machine in which the runners of each stage from the highest pressure stage to the lowest pressure stage are fixed on the main shaft, and the runner chambers of each stage are connected by a return passage; The back pressure chamber side of the pressure stage runner and the suction chamber are connected through the balance hole of the coolant 1, and this first balance hole is formed in the main shaft, and is aligned with the first balance hole of the lowest pressure stage lance. A multi-stage hydraulic machine characterized in that a second balance hole opening in the outer peripheral area of the inner back pressure chamber is formed on the side of the intermediate structure. 2) The second balance hole is in the intermediate structure: 'l b
The invention is characterized in that it consists of a plurality of balance holes drilled in the direction of radiation, and the outlets of these balance holes open into the circumferential region of the inner back pressure chamber.Claim 1. A multi-stage hydraulic machine as described in . 3) The multi-stage hydraulic machine according to claim 1, wherein the second balance hole has an intermediate structure in the radial direction. 4) The multi-stage hydraulic machine according to claim 1, wherein the @l balance hole is provided with a flow rate v/4 regulating valve. 5) The above-mentioned adjustment valve is composed of a valve hole formed along the main shaft, a valve body mounted low within this valve ratio and movable in the axial direction, and an operating rod that moves the valve body in the axial direction. A multi-stage hydraulic machine according to claim 1, characterized in that:
JP59061599A 1984-03-29 1984-03-29 Multistage hydraulic machinery Pending JPS60204973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59061599A JPS60204973A (en) 1984-03-29 1984-03-29 Multistage hydraulic machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59061599A JPS60204973A (en) 1984-03-29 1984-03-29 Multistage hydraulic machinery

Publications (1)

Publication Number Publication Date
JPS60204973A true JPS60204973A (en) 1985-10-16

Family

ID=13175779

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59061599A Pending JPS60204973A (en) 1984-03-29 1984-03-29 Multistage hydraulic machinery

Country Status (1)

Country Link
JP (1) JPS60204973A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102996496A (en) * 2012-11-20 2013-03-27 锦州重型水泵有限公司 Self-balancing self-positioning energy-saving multi-stage water pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102996496A (en) * 2012-11-20 2013-03-27 锦州重型水泵有限公司 Self-balancing self-positioning energy-saving multi-stage water pump

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