JPH07259718A - Controlling mechanism for hydraulic turbine pressure regulator - Google Patents

Controlling mechanism for hydraulic turbine pressure regulator

Info

Publication number
JPH07259718A
JPH07259718A JP6075516A JP7551694A JPH07259718A JP H07259718 A JPH07259718 A JP H07259718A JP 6075516 A JP6075516 A JP 6075516A JP 7551694 A JP7551694 A JP 7551694A JP H07259718 A JPH07259718 A JP H07259718A
Authority
JP
Japan
Prior art keywords
side arm
guide vane
pressure
pressure regulator
suppressor
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.)
Withdrawn
Application number
JP6075516A
Other languages
Japanese (ja)
Inventor
Hiroshi Matsushita
広 松下
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP6075516A priority Critical patent/JPH07259718A/en
Publication of JPH07259718A publication Critical patent/JPH07259718A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

Landscapes

  • Control Of Water Turbines (AREA)

Abstract

PURPOSE:To prevent the loss in water discharge out of a pressure regulator, which has occurred so far at the time of normal suspension, without impairing the effect of the pressure regulator in the case of emergency. CONSTITUTION:A tandem type operating arm structure is made up of a pressure regulator side arm 1A connected to a lever 2 interlocked with a dash pod 3 and a pressure distribution valve 4 in a hydraulic turbine pressure regulator, and of a guide vane side arm 1B which is interlocked with the pressure regulator, and is combined therewith with a spring 20, the guide vane side arm 1B is operated to the no load opening of a guide vane by the pressure regulator side arm 1A, it is also so designed that the operation is suspended by a stopper 25, and the guide vane side arm 1B is thereby actuated against the spring 20 by itself up to its full closed position thereafter.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、通常停止時に発生する
水車制圧機からの放水損失を防止する制圧機制御機構に
関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure suppressor control mechanism for preventing water discharge loss from a water turbine pressure suppressor which normally occurs at a stop.

【0002】[0002]

【従来の技術】水車及びポンプ水車において、制圧機は
通常水車のケーシングに取付けられ、調速機に連結され
る。そして、非常停止や負荷が急減したとき、調速機は
ガイドベーンを閉じると同時に制圧機を開いて水圧管よ
りの水を放出し、水口の動作が終わったのち弁は自動的
にゆるやかに閉じる。これは、水圧管内流速の急変を防
いで水撃作用を軽減するためである。
2. Description of the Related Art In turbines and pump turbines, a pressure suppressor is usually mounted on a casing of the turbine and connected to a speed governor. Then, when the emergency stop or load suddenly decreases, the governor closes the guide vane and at the same time opens the pressure suppressor to discharge water from the penstock, and after the operation of the water port ends, the valve automatically closes gently. . This is to prevent a sudden change in the flow velocity in the penstock and reduce the water hammer effect.

【0003】図2は、従来の水車制圧機制御機構の動作
説明図である。図2において、図示していないガイドベ
ーンが急激に閉じると、アーム1は点線位置に移動し、
これによりレバー2はダッシュポット3を支点として配
圧弁4を開く。これにより、サーボモータ5のピストン
6を押圧する圧油が排出され、制圧機7が作動して弁8
が開らき、これにより水口9が開らいて水車ケーシング
10内の圧力水が放出される。また、弁8が開くと、カ
ム11が移動してレバー2の支点が下降し、配圧弁4を
閉じてフィードバック作用する。
FIG. 2 is a diagram for explaining the operation of a conventional hydraulic turbine suppressor control mechanism. In FIG. 2, when a guide vane (not shown) is suddenly closed, the arm 1 moves to a dotted line position,
As a result, the lever 2 opens the pressure distribution valve 4 with the dashpot 3 as a fulcrum. As a result, the pressure oil that presses the piston 6 of the servomotor 5 is discharged, and the pressure suppressor 7 operates to operate the valve 8
Is opened, whereby the water port 9 is opened and the pressure water in the turbine casing 10 is discharged. Further, when the valve 8 is opened, the cam 11 moves to lower the fulcrum of the lever 2, and the pressure distributing valve 4 is closed to perform a feedback action.

【0004】[0004]

【発明が解決しようとする課題】水車発電機の停止制御
に際して、通常停止時はガイドベーンを徐々に閉じて無
負荷とし、解列の後ガイドベーンを急閉する。このと
き、制圧機の弁が小開して圧力水が放出され、エネルギ
損失を招いていた。
During the stop control of the water turbine generator, the guide vanes are gradually closed to provide no load during the normal stop, and the guide vanes are rapidly closed after the disconnection. At this time, the valve of the pressure suppressor was slightly opened to release pressured water, resulting in energy loss.

【0005】すなわち、図2を参照して説明すると、ガ
イドベーンを徐々に閉じる場合、レバー2はダッシュポ
ット3部がクッションになり、レバー2の左端に連動す
る配圧弁4は動作しない。しかし、通常の水車発電機停
止時、ガイドベーンを無負荷まで閉めこむと、系統から
解列され同時にガバナの停止弁が働きガバナが急閉す
る。この時、レバー2はダッシュポット3部が支点とな
り、レバー2の左端に連動する配圧弁4は引き上げら
れ、制圧機7の弁8が小開するものであった。
That is, referring to FIG. 2, when the guide vane is gradually closed, the lever 2 serves as a cushion at the dashpot 3, and the pressure distribution valve 4 interlocked with the left end of the lever 2 does not operate. However, if the guide vane is closed to a no load when the normal turbine generator is stopped, the governor stop valve is activated and the governor is closed suddenly due to disconnection from the grid. At this time, the lever 2 has the dashpot 3 as a fulcrum, the pressure distribution valve 4 linked to the left end of the lever 2 is pulled up, and the valve 8 of the pressure suppressor 7 is opened slightly.

【0006】この対策として、従来ダッシュポットタイ
ム及び配圧弁のラップ調整が行われているが、かかる調
整作業が複雑で効果に限度があり、放水損失を十分に防
止することができなかった。
As a countermeasure against this, the dash pot time and the lap adjustment of the pressure distributing valve have been conventionally performed, but the adjustment work is complicated and the effect is limited, so that the water discharge loss cannot be sufficiently prevented.

【0007】本発明は、このような従来技術の課題を解
決するためになされたもので、緊急時の制圧機効果を損
なうことなく、従来発生していた通常停止時の制圧機か
らの放水損失を防止することができる水車制圧機の制御
機構を提供することを目的とする。
The present invention has been made in order to solve the problems of the prior art as described above, and water loss from the pressure suppressor at the time of normal stop that has conventionally occurred without impairing the effect of the pressure suppressor in an emergency. It is an object of the present invention to provide a control mechanism for a hydraulic turbine suppressor capable of preventing the above.

【0008】[0008]

【課題を解決するための手段】上記の課題を解決するた
めに、本発明は、ガイドベーンの開閉によりアーム、ダ
ッシュポットと連動するレバー、配圧弁及びサーボモー
タを介して制圧機の水口を開閉する水車制圧機の制御機
構において、前記アームを、前記レバーに連結された制
圧機側アームと、この制圧機側アームに連動しかつばね
により結合されたガイドベーン側アームとによって、2
連式操作アーム構造とし、かつ制圧機側アームがガイド
ベーン側アームをガイドベーンの全開から無負荷開度ま
で動作させるようにこの制圧機側アームの動作を停止さ
せるストッパを設けたものである。
In order to solve the above-mentioned problems, the present invention opens and closes the water outlet of a pressure suppressor by opening and closing a guide vane through an arm, a lever that interlocks with a dashpot, a pressure distributing valve and a servomotor. In the control mechanism of the water turbine pressure suppressor, the arm is constituted by a pressure suppressor side arm connected to the lever and a guide vane side arm interlocking with the pressure suppressor side arm and coupled by a spring.
This is a continuous operation arm structure, and a stopper for stopping the operation of the pressure suppressor side arm is provided so that the pressure suppressor side arm operates the guide vane side arm from the full opening of the guide vane to the no-load opening.

【0009】[0009]

【作用】上記の手段によれば、制圧機側アームはガイド
ベーンの無負荷開度までガイドベーン側アームを動作さ
せ、ストッパによってその動作を停止する。そして、そ
の後、ガイドベーン側アームはばね力に抗して全閉位置
まで単独で動作する。したがって、ガイドベーンが無負
荷開度から急閉しても、ストッパによりレバーは動かな
いため制圧機の弁は小開しない。
According to the above means, the pressure suppressor side arm operates the guide vane side arm up to the no-load opening of the guide vane, and the operation is stopped by the stopper. Then, thereafter, the guide vane side arm operates independently to the fully closed position against the spring force. Therefore, even if the guide vane is suddenly closed from the no-load opening, the lever does not move due to the stopper, and the valve of the pressure suppressor does not open slightly.

【0010】[0010]

【実施例】以下、図1を参照して本発明の実施例につい
て詳細に説明する。図1は本発明に係る水車制圧機の制
御機構の一実施例を示し、図2に示したものと同一の部
分には同一の符号を付して、重複する説明は省略する。
Embodiments of the present invention will be described in detail below with reference to FIG. FIG. 1 shows an embodiment of a control mechanism for a hydraulic turbine suppressor according to the present invention. The same parts as those shown in FIG. 2 are designated by the same reference numerals, and duplicate explanations are omitted.

【0011】本発明は、図2に示した従来のアーム1を
改良して2連式操作アーム構造としたものである。すな
わち、本発明によれば、図1に示されるように、水車制
圧機制御機構におけるダッシュポット3及び配圧弁4と
連動するレバー2に連結された制圧機側アーム1Aと、
この制圧機側アーム1Aに連動しかつばね20により結
合されたガイドベーン側アーム1Bとによって、2連式
操作アーム構造とされている。
The present invention is an improved structure of the conventional arm 1 shown in FIG. 2 and has a double operation arm structure. That is, according to the present invention, as shown in FIG. 1, a pressure suppressor side arm 1A connected to a lever 2 that interlocks with a dashpot 3 and a pressure distribution valve 4 in a hydraulic turbine pressure suppressor control mechanism,
The guide vane side arm 1B which is interlocked with the pressure suppressor side arm 1A and is connected by the spring 20 forms a double operation arm structure.

【0012】本実施例によれば、制圧機側アーム1Aは
長片21と、この長片の一端部分からほぼ直角に延びる
短片22とから成る大略L字形のアームとされ、その長
片21の先端部分がレバー2に連結されていると共に、
長片21と短片22との結合部分を中心として枢動可能
となっている。一方、ガイドベーン側アーム1Bは長片
23と、この長片の中途部分からほぼ直角に延びる短片
24とから成り、この短片24の先端が制圧機側アーム
1Aの短片22の中途部分に接点Aで当接している。ま
た、このガイドベーン側アーム1Bはその長片23の一
端部分を中心として枢動可能となっていると共に、長片
23の他端部分が制圧機側アーム1Aの短片22の先端
部分とばね20によって結合されている。
According to the present embodiment, the suppressor arm 1A is a substantially L-shaped arm composed of a long piece 21 and a short piece 22 extending substantially at right angles from one end of the long piece. The tip is connected to the lever 2 and
The long piece 21 and the short piece 22 can be pivoted about a connecting portion. On the other hand, the guide vane side arm 1B is composed of a long piece 23 and a short piece 24 extending almost at a right angle from the middle portion of the long piece. Abuts on. The guide vane side arm 1B is pivotable about one end of the long piece 23, and the other end of the long piece 23 is connected to the tip end of the short piece 22 of the pressure suppressor side arm 1A and the spring 20. Are joined by.

【0013】なお、制圧機側アーム1Aとガイドベーン
側アーム1Bとは連動して動く必要があるため、図示す
るように、同一の軸25に取付けるのが機構上好ましい
ものである。
Since the suppressor side arm 1A and the guide vane side arm 1B need to move in conjunction with each other, it is mechanically preferable to mount them on the same shaft 25 as shown in the figure.

【0014】更に、制圧機側アーム1Aに関連してスト
ッパ26が設けられている。このストッパ26は、制圧
機側アーム1Aがガイドベーン側アーム1Bをガイドベ
ーンの全開から無負荷開度まで動作させるようにこの制
圧機側アーム1Aの動作(枢動)を停止させるものであ
る。したがって、制圧機側アーム1Aはガイドベーンの
無負荷開度までガイドベーン側アーム1Bを動作させ、
ストッパ26によってその動作を停止する。そして、そ
の後、ガイドベーン側アーム1Bはばね20の力に抗し
て全閉位置まで単独で動作する。
Further, a stopper 26 is provided in association with the pressure suppressor arm 1A. The stopper 26 stops the operation (pivot) of the pressure suppressor side arm 1A so that the pressure suppressor side arm 1A operates the guide vane side arm 1B from the full opening of the guide vane to the no-load opening. Therefore, the suppressor side arm 1A operates the guide vane side arm 1B up to the no-load opening of the guide vane,
The operation is stopped by the stopper 26. Then, thereafter, the guide vane side arm 1B operates independently to the fully closed position against the force of the spring 20.

【0015】以上述べたように、ガイドベーンの動きに
対し、ガイドベーン側アーム1Bと制圧機側アーム1A
とは連動して動くが、ガイドベーンが無負荷開度まで閉
じると制圧機側アーム1Aの動きはとまる。すなわち、
ガイドベーンが無負荷開度から急閉しても、ストッパ2
6によりレバー2は動かないため、制圧機7の弁8は小
開しない。
As described above, with respect to the movement of the guide vanes, the guide vane side arm 1B and the pressure suppressor side arm 1A.
However, when the guide vane closes to the no-load opening, the suppressor side arm 1A stops moving. That is,
Even if the guide vane closes rapidly from the no-load opening, the stopper 2
Since the lever 2 does not move due to 6, the valve 8 of the pressure suppressor 7 does not open slightly.

【0016】なお、非常停止時制圧機は無負荷開度でそ
の動作を停止するが、無負荷状態での水圧管内流速は低
く水撃作用は問題とならない。また、ストッパの調節は
現地試運転時に実施される。
Although the emergency stop pressure suppressor stops its operation at the no-load opening, the flow velocity in the hydraulic pipe is low in the no-load state, and the water hammer action does not pose a problem. Also, adjustment of the stopper will be carried out during the field trial run.

【0017】[0017]

【発明の効果】以上述べたように、本発明によれば、水
車制圧機の制御機構におけるダッシュポット及び配圧弁
と連動するレバーに連結された制圧機側アームと、この
制圧機側アームに連動しかつばねにより結合されたガイ
ドベーン側アームとによって、2連式操作アーム構造と
し、制圧機側アームはガイドベーンの無負荷開度までガ
イドベーン側アームを動作させると共に、その動作をス
トッパによって停止し、その後ガイドベーン側アームは
ばね力に抗して全閉位置まで単独で動作するようにした
ので、ガイドベーンが無負荷開度から急閉しても、スト
ッパによりレバーは動かないため、制圧機の弁は小開せ
ず、したがって緊急時の制圧機効果を損なうことなく、
従来発生していた通常停止時の制圧機からの放水損失を
防止することができる。
As described above, according to the present invention, a pressure suppressor side arm connected to a lever interlocking with a dashpot and a pressure distributing valve in a control mechanism of a hydraulic turbine pressure suppressor, and an interlocker with the pressure suppressor side arm. And a guide vane-side arm connected by a spring to form a double operation arm structure, and the pressure suppressor-side arm operates the guide vane-side arm up to the no-load opening of the guide vane, and the operation is stopped by a stopper. After that, the guide vane side arm operates independently to the fully closed position against the spring force.Therefore, even if the guide vane is suddenly closed from the no-load opening, the lever does not move due to the stopper, so the control pressure is reduced. The valve of the machine does not open small, so without compromising the effect of the pressure suppressor in an emergency,
It is possible to prevent the water discharge loss from the pressure suppressor at the time of a normal stop that has conventionally occurred.

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

【図1】本発明に係る水車制圧機制御機構の一実施例を
示す動作説明図である。
FIG. 1 is an operation explanatory view showing an embodiment of a hydraulic turbine suppressor control mechanism according to the present invention.

【図2】従来の水車制圧機制御機構を示す動作説明図で
ある。
FIG. 2 is an operation explanatory view showing a conventional hydraulic turbine suppressor control mechanism.

【符号の説明】[Explanation of symbols]

1A 制圧機側アーム 1B ガイドベーン側アーム 2 レバー 3 ダッシュポット 4 配圧弁 5 サーボモータ 6 ピストン 7 制圧機 8 弁 9 水口 10 水車ケーシング 11 カム 20 ばね 26 ストッパ 1A Suppressor side arm 1B Guide vane side arm 2 Lever 3 Dashpot 4 Pressure distributing valve 5 Servomotor 6 Piston 7 Suppressor 8 Valve 9 Water port 10 Water turbine casing 11 Cam 20 Spring 26 Stopper

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】ガイドベーンの開閉によりアーム、ダッシ
ュポットと連動するレバー、配圧弁及びサーボモータを
介して制圧機の水口を開閉する水車制圧機の制御機構に
おいて、前記アームを、前記レバーに連結された制圧機
側アームと、この制圧機側アームに連動しかつばねによ
り結合されたガイドベーン側アームとによって、2連式
操作アーム構造とし、かつ制圧機側アームがガイドベー
ン側アームをガイドベーンの全開から無負荷開度まで動
作させるようにこの制圧機側アームの動作を停止させる
ストッパを設けたことを特徴とする水車制圧機の制御機
構。
1. A control mechanism for a water turbine pressure suppressor in which a water outlet of the pressure suppressor is opened and closed through an arm, a lever that interlocks with a dashpot, a pressure distribution valve, and a servomotor by opening and closing a guide vane, and the arm is connected to the lever. The pressure suppressor side arm and the guide vane side arm that is linked to the pressure suppressor side arm and is coupled by the spring have a double operation arm structure, and the pressure suppressor side arm uses the guide vane side arm as a guide vane. A control mechanism for a water turbine pressure suppressor, which is provided with a stopper for stopping the operation of the pressure suppressor side arm so as to operate from the full open to the no-load opening.
JP6075516A 1994-03-23 1994-03-23 Controlling mechanism for hydraulic turbine pressure regulator Withdrawn JPH07259718A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6075516A JPH07259718A (en) 1994-03-23 1994-03-23 Controlling mechanism for hydraulic turbine pressure regulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6075516A JPH07259718A (en) 1994-03-23 1994-03-23 Controlling mechanism for hydraulic turbine pressure regulator

Publications (1)

Publication Number Publication Date
JPH07259718A true JPH07259718A (en) 1995-10-09

Family

ID=13578486

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6075516A Withdrawn JPH07259718A (en) 1994-03-23 1994-03-23 Controlling mechanism for hydraulic turbine pressure regulator

Country Status (1)

Country Link
JP (1) JPH07259718A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109209974A (en) * 2018-10-26 2019-01-15 联峰钢铁(张家港)有限公司 A kind of air compressor guide vane control system
CN111794896A (en) * 2020-07-01 2020-10-20 刘屹东 A wave power generation facility for reef is warned

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109209974A (en) * 2018-10-26 2019-01-15 联峰钢铁(张家港)有限公司 A kind of air compressor guide vane control system
CN111794896A (en) * 2020-07-01 2020-10-20 刘屹东 A wave power generation facility for reef is warned

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Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20010605