JPS59160074A - Hydraulic machine - Google Patents

Hydraulic machine

Info

Publication number
JPS59160074A
JPS59160074A JP58033836A JP3383683A JPS59160074A JP S59160074 A JPS59160074 A JP S59160074A JP 58033836 A JP58033836 A JP 58033836A JP 3383683 A JP3383683 A JP 3383683A JP S59160074 A JPS59160074 A JP S59160074A
Authority
JP
Japan
Prior art keywords
drain pipe
runner
annular
water
water discharging
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
JP58033836A
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 JP58033836A priority Critical patent/JPS59160074A/en
Publication of JPS59160074A publication Critical patent/JPS59160074A/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
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/02—Machines or engines of reaction type; Parts or details peculiar thereto with radial flow at high-pressure side and axial flow at low-pressure side of rotors, e.g. Francis turbines
    • 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
    • F03B11/04—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator for diminishing cavitation or vibration, e.g. balancing
    • 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)

Abstract

PURPOSE:To restrict the resonance phenomena of water discharging pipeline system by a method wherein a water discharging pipe, discharging water between a guide vane and a runner, is communicated with the annular water discharging pipe equipped with a flow amount control device. CONSTITUTION:When an automatic valve 9 is opened, water which stays in a space 4c between the guide vane 1 and the runner 3 can be discharged through the water discharging pipeline system consisting of the water discharging pipe 5 for communication, the annular water discharging pipe 6 and an external water discharging pipe 7, therefore, the runner 3 may be rotated idly and a phase regulating operation may be effected. When the automatic valve 9 is closed to effect a normal operation, the pipeline constant of the water discharging pipeline system, consisting chiefly of the annular water discharging pipe 6, can be set arbitrarily by changing the opening degree of a manual valve 13, therefore, the point of resonance may be avoided easily and the stable normal operation may be effected.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は水面押下げ運転を行なうことがあり、ガイドベ
ーンとランナとの間部ρ）ら排水する排水管を持ち、そ
の排水管系統の振動騒音の発年を防止するようにした水
力機械に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention may perform water surface pressing operation, and has a drain pipe for discharging water from the area between the guide vane and the runner. This invention relates to hydraulic machinery designed to prevent noise generation.

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

近年、電源系統の力率改善の為、調相運転を行なう水力
発電所が増えてきているが、この際、水面を押下げた状
態にてランナラ駅転させるため、ランナシール部の熱膨
張を防止する目的で、シール部に冷却水を注入している
。シール部全通過した冷却水は遠心力にてランチ外周へ
飛はされ、ガイドベーン内周に滞溜する。′更に上側カ
バーと下側カバーを備えて成るカバー内にガイドベーン
とランナが配設されているが、そのランチ室内の空気が
ガイドベーンを通してケーシングへ逃げないように、一
般にケーシング側の圧力をランナ室圧より高く加圧する
為、ケーシング内の加圧水の一部はガイドベーンの隙間
を通してランチ室内へ流入し、前述のシール冷却水同様
、回転するランナによる遠心力でガイドベーンとランナ
外周間に滞溜し、ランナの回転摩擦力によ）旋回運動す
る。In recent years, an increasing number of hydroelectric power plants are using phase-adjusted operation to improve the power factor of the power supply system.In this case, in order to turn the runner station while the water surface is depressed, thermal expansion of the runner seal part has to be reduced. To prevent this, cooling water is injected into the seal. The cooling water that has completely passed through the seal is blown to the outer periphery of the launch by centrifugal force and accumulates on the inner periphery of the guide vane. 'Furthermore, a guide vane and a runner are disposed within the cover comprising an upper cover and a lower cover, and in order to prevent the air in the launch chamber from escaping into the casing through the guide vane, the pressure on the casing side is generally transferred to the runner. Because the pressure is higher than the room pressure, some of the pressurized water in the casing flows into the launch chamber through the gap between the guide vanes, and like the seal cooling water mentioned above, it accumulates between the guide vanes and the outer periphery of the runners due to the centrifugal force caused by the rotating runners. and rotates due to the rotational friction force of the runner.

ここで、このままの状態で・あると滞溜水の増加に伴な
い、攪拌損失による空転軸入力の増、ｒＪａ、あるい、
は大きな入力変動を生じる事があるばかりが、攪拌によ
り滞溜水の温度が上昇する事により、ランナが熱膨張し
て静止部と接触事故を引起こす可能性があるため、通常
調相運転を実施する機械においては、ランチ外周の滞溜
水をドラフトチューブへ抜（２Ｑｉ）Ｇと呼ばれる排水
・Ｕ系統金膜けている。特に最新の実験結果によると、
ランナとガイドベーンの間部から排水するのが最も理想
的である事が判明しているが、ランナとガイドベーンと
の間部には大口径の配管を取付ける十分な、宗地が無い
為、必要量の滞溜水を抜くには、小口径の配管を多数配
置する必要がある。If this state remains as it is, as the accumulated water increases, the idling shaft input will increase due to agitation loss, rJa, or
Not only can large input fluctuations occur, but the temperature of the accumulated water increases due to agitation, which can cause the runner to thermally expand and cause an accident when it comes into contact with a stationary part. In the machine to be used, the accumulated water around the launch is drained into the draft tube (2Qi) and the drainage/U system called G is covered with gold film. Especially according to the latest experimental results,
It has been found that it is most ideal to drain water from between the runner and guide vane, but since there is not enough space between the runner and guide vane to install large diameter piping, To remove the required amount of accumulated water, it is necessary to install many small-diameter pipes.

ところがこの２０ＤＧと呼ばれる排水管系統は通常運転
時には閉塞しておく必要がある為、ドラフトチューブへ
至る中間に自動弁を設けているが、前述の小口径の排水
用配管全てに自動弁を設けることは、保守上も不都合な
上、不経済でもあるので、この小口径の多数の配管は一
旦大口径の環状排水管に連通させて、排水を集め、環状
排水管から外部排水管全分岐し、その外部排水盲の露出
部に自動弁を取付け、その自動弁を後出した後、ドラフ
トチューブへ至るように配管するのが音道である。然し
、このようにすると、環状排水管に対し、圧力、流速等
開口端境界条件が微妙に異なる複数個の小口径の配管（
以下連通用排水管と称″ｒ）が環状排水管を介して接続
連通される為、環状排水管を中心とする配水管系統が、
通常運転時に共振状態を引起こす事があル、一度共振状
態に入ると異常な振動、騒音を生じ、最悪の場合水力機
械の運転が継続不可能とな５゜ このような現象は、揚水発電所の発電電動機を連結した
ポンプ水車のような水力機械においても、揚水運転に入
る前に水力機械を空転させる条件があることから、同様
に生ずることがある。However, this drainage pipe system called 20DG needs to be closed during normal operation, so an automatic valve is installed in the middle leading to the draft tube, but automatic valves must be installed in all of the small diameter drainage pipes mentioned above. This is not only inconvenient in terms of maintenance but also uneconomical, so the large number of small-diameter pipes is first connected to a large-diameter annular drain pipe to collect the waste water, and then all external drain pipes are branched from the annular drain pipe. The sound path is to attach an automatic valve to the exposed part of the external drainage blind, and after the automatic valve is removed, pipe the pipe to the draft tube. However, in this case, multiple small-diameter pipes (with slightly different opening end boundary conditions such as pressure and flow velocity) are used for the annular drain pipe.
Since the communication drain pipes (hereinafter referred to as "r") are connected and communicated via the annular drain pipe, the water distribution pipe system centered on the annular drain pipe is
A resonance state may occur during normal operation, and once a resonance state occurs, abnormal vibrations and noise may occur, and in the worst case, the operation of the hydraulic machine may become impossible. A similar problem can occur in hydraulic machines such as pump-turbines connected to generator motors, as there is a condition for the hydraulic machines to idle before entering pumping operation.

〔発明の目的〕[Purpose of the invention]

本発明は、空転を安全に行なわせる為にガイドベーンと
ランナとの間から排水する配管系統を設け、しかも通常
運転に際して前記配管系統の共振現象を抑制し、通常運
転も安全に行ない得る水力ｔａｗｃｔ提供することを目
的とする。The present invention provides a hydraulic tawct which is provided with a piping system for discharging water from between the guide vane and the runner in order to safely perform idling, and which suppresses the resonance phenomenon of the piping system during normal operation, thereby allowing safe normal operation. The purpose is to provide.

〔発明の概要〕[Summary of the invention]

本発明においては、上側カバーと下側カッく−を有する
カバー内にガイドベーンとランナを備え、水面を押下げ
た状態でランナを空転させることのある水力機械におい
て、ランチ外周部に溜まるガイドベーンからの漏水やラ
ンナシール冷却水を排水する複数個の連通用排水管をカ
バーのガイドベーンとランチとの間部に開口させて配設
し、連通用排水管の他端を譲状排水管に連通させ、環状
排水管に自動弁を有しドラフトチューブに開口する外部
排水管を設け、更に前記環状排水管に手動弁又はスロッ
トルプレート等の流量制御装置を設けることにより、流
量制御装置の開度を調整し、環状排水管を主体とした排
水管系統の配管定数を任意に設定し、現地試験にて共振
現象が発生した場合でも容易に共振点を避けることを可
能にするものである。In the present invention, a guide vane and a runner are provided in a cover having an upper cover and a lower cup, and in a hydraulic machine in which the runner may idle while the water surface is pressed down, the guide vane that accumulates on the outer periphery of the launch A plurality of communication drain pipes for draining water leakage from the runner seal and cooling water from the runner seal are opened between the cover's guide vane and the launch, and the other end of the communication drain pipes is connected to a yield pipe. By connecting the annular drain pipe with an external drain pipe having an automatic valve and opening into the draft tube, and further providing a flow control device such as a manual valve or a throttle plate on the annular drain pipe, the opening degree of the flow control device can be controlled. This makes it possible to arbitrarily set the piping constants of a drainage pipe system mainly consisting of annular drainage pipes, and to easily avoid resonance points even if resonance occurs in field tests.

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

実施例１ 以下、本発明の第１の実施例について、第・１図ないし
第３図を参照して説明する。（１１はケーシング（２）
からランナ（３）に至る水量を制御するガイドベーンで
あって、上側カバー（４ａ）、下ａｌｌカバー（４ｂ）
を備えて成るカバー（４）同にランチ（３）と共に配設
されている。ランナ（３）の外周とガイドベーン（１）
との間部（４Ｃ）の下側カバー（４ｂ）部には複数個の
小口径の連−通用排水管（５）がその一端を開口してお
シ、他端は下側カバー（４ｂ）の下方に環状に配設され
た環状排水管（６）に接続されている。この環状排水’
ｇ　（６）には外部排水管（７）が分岐されている。Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 3. (11 is the casing (2)
A guide vane that controls the amount of water from the to the runner (3), including an upper cover (4a) and a lower all cover (4b).
A cover (4) comprising a cover (4) is also arranged together with a launch (3). Outer circumference of runner (3) and guide vane (1)
A plurality of small-diameter communication drain pipes (5) are open at one end in the lower cover (4b) part of the space (4C) between the lower cover (4b) and the lower cover (4b). It is connected to an annular drain pipe (6) disposed in an annular manner below. This annular drain'
An external drain pipe (7) is branched off from g (6).

環状排水管（６）と外部排水管（７）との大部分はケー
シングバーレル（８）内に埋設されている。外部排水管
（７）の一部分のケーシングバーレル（８）から露出し
た部分には自動弁（９）を取付け、その先の外部排水管
（７）は再びケーシングバーレル１８）に埋設されドラ
フトチューブｆ１１に開口している。環状排水管（６）
が横断するドラフト監査路σＤ天井部に切欠開口部ａ′
ｌを設けて環状排水管（６）の一部分をケーシングバー
レル（８）から露出させ、ドラフト監査路Ｕから操作可
能なように手動弁１３１を設置する。Most of the annular drain pipe (6) and the external drain pipe (7) are buried within the casing barrel (8). An automatic valve (9) is attached to a part of the external drain pipe (7) exposed from the casing barrel (8), and the external drain pipe (7) beyond that is buried again in the casing barrel 18) and connected to the draft tube f11. It's open. Annular drain pipe (6)
A draft inspection path σD is crossed by a notch opening a′ in the ceiling.
A portion of the annular drain pipe (6) is exposed from the casing barrel (8), and a manual valve 131 is installed so as to be operable from the draft inspection path U.

次に作用について説明する。Next, the effect will be explained.

自動弁（９）を開にすれば、ガイドベーン（１）とラン
チ（３１との間部（４Ｃ）に滞流する水を、連通用排水
管（５）、環状排水管（６）、外部排水管（７）から成
る排水管系統から排出できるので、ランナ（３）を安全
に空転させ、調相運転をすることが出来る。そして、自
動弁（９）を閉にして通常運転する時は、手動弁α３の
開度を変化させることによ）、環状排水管（６）全主体
とした排水管系統の配管定数を任意に設定することが簡
単に可能となる為、現地試験にて共低現象が発生した場
合でも、容易に共振点を避けることが出来、安定した通
常運転を行なうことが可能となる。When the automatic valve (9) is opened, the water remaining in the area (4C) between the guide vane (1) and the launch (31) is drained from the communication drain pipe (5), the annular drain pipe (6), and the outside. Since the water can be discharged from the drain pipe system consisting of the drain pipe (7), the runner (3) can be safely idled and phase control operation can be performed.Then, when the automatic valve (9) is closed for normal operation. , by changing the opening degree of the manual valve α3), it is possible to easily set the piping constants of the drain pipe system consisting of the annular drain pipe (6) as the main body, so it is possible to easily set the piping constants of the drain pipe system as the main body. Even if a low level phenomenon occurs, the resonance point can be easily avoided and stable normal operation can be performed.

実施例２ 第４図は第２の実施例の要部を示すもので、実施例１の
手動弁０３０代シに、ドラフト監査路に露出開口した環
状排水管（６）からの１字状分岐管Ｉのｉ蓋（１９に取
付けたスロットルブレー）　（１６を環状排水管（６）
内へ挿入するようにしたものである。他は実施例（１）
の通りである。Embodiment 2 FIG. 4 shows the main part of the second embodiment, in which a single-shaped branch from the annular drain pipe (6) exposed to the draft inspection path is added to the manual valve 030 of embodiment 1. I lid of pipe I (throttle brake attached to 19) (16 to circular drain pipe (6)
It is designed to be inserted inside. Others are Example (1)
It is as follows.

このようにすると、配管定数の調整は実施例１より若干
面倒にはなるが、実施例１の場合のように強度的に弱い
ドラフト監査路Ｃ１１１部に切欠開口部（Ｉ′ｌＪを設
けずに済むオリ点がある。他の作用効果は実施例（１）
と同様である。In this way, the adjustment of the piping constant is a little more troublesome than in the first embodiment, but it is possible to avoid providing a notch opening (I'lJ) in the draft inspection path C111, which is weak in strength, as in the case of the first embodiment. There is a point where it can be done.Other effects are shown in Example (1)
It is similar to

実施例３ 第５図は第３の実施例の要部を示すもので、連通用排水
管（５）を上側カバー（４ａ）に開口させ、環状排水管
（６）を水車ピット回内に設けた例であって他は実施例
１と同様である。Embodiment 3 Figure 5 shows the main part of the third embodiment, in which a communication drain pipe (5) is opened in the upper cover (4a), and an annular drain pipe (6) is installed in the water turbine pit supination. This example is the same as Example 1 in other respects.

このようにしても、実施例１に準じた作用効果が得られ
る。Even in this case, effects similar to those of the first embodiment can be obtained.

実施例４ 第６図は第４の実施例の要部を示すもので、環状排水’
ｉｆ　（６１を上側カバー（４ａ）の上方側面のケーシ
ングパーレル（８）内に大部分を埋設して、流量制御装
置である手動弁ａ３取付部を切欠開口部ａ７Ｊに露　４
出させたものである。他は実施例３と同様である。Embodiment 4 Figure 6 shows the main part of the fourth embodiment.
If (Most of 61 is buried in the casing parrel (8) on the upper side of the upper cover (4a), and the mounting part of manual valve a3, which is a flow rate control device, is exposed in the notch opening a7J.
This is what I let out. The rest is the same as in Example 3.

このようにしても実施例１ｉＣ準じた作用効果が得られ
る。Even in this manner, the effects similar to those of Example 1iC can be obtained.

同、本発明は上記し、かつ図面に示した実施例のみに限
定されるものではなく、例えｉｆ施例４の流量制御装置
である手動弁０３を実施例２のスロットルプレートＱｅ
Ｉｖｃｗ換してもよいし、流量制御装置を複数個設けで
もよい等、その要旨を変史しない範囲で、種々変形して
実施できることは勿論でおる。Similarly, the present invention is not limited to the embodiments described above and shown in the drawings; for example, if the manual valve 03 which is the flow rate control device of the fourth embodiment is replaced with the throttle plate Qe of the second embodiment.
It goes without saying that various modifications can be made without changing the gist of the invention, such as by changing the Ivcw or by providing a plurality of flow rate control devices.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、本発明によれば、ランチ空転時の
排水管系統を設けると共に、その排水官系統の環状母管
に流量制御装置を設けたので、ランナ空転も空転軸入力
、温度上昇ともに最も少なく安全に行ない得ると共に、
通常運転時の前記排水管系統閉鎖状態における共振現象
を簡単な構造で抑制する事が出来、通常運転も安全に行
ない得る水力機械を提供する事が出来る。As explained above, according to the present invention, a drain pipe system is provided during launch idling, and a flow rate control device is provided in the annular main pipe of the drain system, so that both runner idling, idling shaft input, and temperature rise are reduced. It can be done safely and with the least amount of
It is possible to suppress the resonance phenomenon in the drain pipe system closed state during normal operation with a simple structure, and to provide a hydraulic machine that can safely perform normal operation.

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

第１図は本発明の水力機械の第１の実施例を示す縦断面
図、第２図は第１図の要部拡大断面図、第３図は第２図
のＩ−１線に沿う矢視断面図、第４図ないし第６図は第
２ないし第４の実施例を示す要部断面図である。 １　ガイドベーン　　３・　ランナ ４　カバー　　　　　４ａ　　上側カッく一４ｂ　下側
カバー　　　４０　間部 ５　連通用排水管　　６・環状排水ゼ ア　外部排水管　　　８・ケーシングノ（−レル９　自
動弁　　　　　１ｏ　　ドラフトチューブ１１　　ドラ
フト監査路 １３流量制御装置である手動弁 １６　　流量制御装置であるスロットルプレート１７　
　水車ビット 代理人　弁理士　　井　上　−男 第　　１　　図 第　　２　　因 第３図FIG. 1 is a longitudinal sectional view showing a first embodiment of the hydraulic machine of the present invention, FIG. 2 is an enlarged sectional view of the main part of FIG. 1, and FIG. 3 is an arrow taken along line I-1 in FIG. The sectional views and FIGS. 4 to 6 are sectional views of main parts showing second to fourth embodiments. 1 Guide vane 3 Runner 4 Cover 4a Upper cutout 4b Lower cover 40 Interval 5 Communication drain pipe 6 Annular drainage zea External drain pipe 8 Casing no (-rel 9 Automatic valve 1o Draft tube 11 Draft inspection path 13 Manual valve 16 which is a flow rate control device Throttle plate 17 which is a flow rate control device
Water Turbine Bit Agent Patent Attorney Inoue - Male Figure 1 Figure 2 Cause Figure 3

Claims (4)

【特許請求の範囲】[Claims] （１）上側カバーと下側カバーを有するカバー内にガイ
ドベーンとランチを備え、水面を押下げた状態でランナ
を空転させることのある水力機械において、ランナ外周
部に溜まるガイドベーンからの漏水やランナシール冷却
水を排水する複数個の連通用排水管をカバーのガイドベ
ーンとランチとの間部に開口させて配設し、連通用排水
管の他端を環状排水管に連通させ、環状排水管に自動弁
を有しドラフトチューブに開口する外部排水管を設け、
更に前記環状排水管に手動弁又はスロットルプレート等
の流量ｒｍａ装置を設けたことを特徴とする水力機械。(1) In a hydraulic machine that has a guide vane and a launch inside a cover that has an upper cover and a lower cover, and the runner may idle while the water surface is pressed down, water leakage from the guide vanes that accumulates on the outer periphery of the runner can be prevented. A plurality of communication drain pipes for draining the runner seal cooling water are opened between the guide vane and the launch of the cover, and the other end of the communication drain pipes is connected to the annular drain pipe, and the annular drain pipe is connected to the annular drain pipe. An external drain pipe with an automatic valve and opening into the draft tube is provided.
A hydraulic machine further characterized in that the annular drain pipe is provided with a flow rate rma device such as a manual valve or a throttle plate. （２）環状排水管は下カバーの下方のケーシングバーレ
ル内に大部分を埋設して流量制御装置取付部をドラフト
監食路部に露出させたことを特徴とする特許請求の範囲
第１ＪＪ４記載の水力機械。(2) The annular drain pipe is mostly buried in the casing barrel below the lower cover, and the flow control device attachment part is exposed to the draft monitoring path part. Hydro machinery. （３）環状排水管は上側カバーの上方の水車ピット内に
設けたことを特徴とする特許請求の範囲第１項記載の水
力機械。(3) The hydraulic machine according to claim 1, wherein the annular drain pipe is provided in the water turbine pit above the upper cover. （４）環状排水管は上側カバーの上方側面のケーシング
バ〜レル内に大部分を埋設して流量制御装置の取付部を
ケーシングバーレルから露出させたことを特徴とする特
許請求の範囲第１項記載の水力吸械。(4) Most of the annular drain pipe is buried within the casing barrel on the upper side surface of the upper cover, so that the mounting portion of the flow control device is exposed from the casing barrel. Hydraulic suction machine as described.
JP58033836A 1983-03-03 1983-03-03 Hydraulic machine Pending JPS59160074A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58033836A JPS59160074A (en) 1983-03-03 1983-03-03 Hydraulic machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58033836A JPS59160074A (en) 1983-03-03 1983-03-03 Hydraulic machine

Publications (1)

Publication Number Publication Date
JPS59160074A true JPS59160074A (en) 1984-09-10

Family

ID=12397568

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58033836A Pending JPS59160074A (en) 1983-03-03 1983-03-03 Hydraulic machine

Country Status (1)

Country Link
JP (1) JPS59160074A (en)

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