JPH05180139A - Opening/closing mechanism for water turbine guide vane - Google Patents
Opening/closing mechanism for water turbine guide vaneInfo
- Publication number
- JPH05180139A JPH05180139A JP3356820A JP35682091A JPH05180139A JP H05180139 A JPH05180139 A JP H05180139A JP 3356820 A JP3356820 A JP 3356820A JP 35682091 A JP35682091 A JP 35682091A JP H05180139 A JPH05180139 A JP H05180139A
- Authority
- JP
- Japan
- Prior art keywords
- guide vane
- closing mechanism
- opening
- closing
- water turbine
- 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- Withdrawn
Links
Classifications
-
- 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
- Compositions Of Macromolecular Compounds (AREA)
- Hydraulic Turbines (AREA)
- Control Of Water Turbines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は水車ガイドベーンの閉鎖
速度を調整可能としたガイドベーン開閉機構に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide vane opening / closing mechanism capable of adjusting the closing speed of a water turbine guide vane.
【０００２】[0002]
【従来の技術】中小容量水車ガイドベーン開閉機構の駆
動機構の駆動動力は従来油圧サーボモータが使われてい
たが、最近になって補機の省略化と経済性向上の点から
電動サーボモータが主流となってきた。2. Description of the Related Art A hydraulic servomotor has conventionally been used as the drive power for the drive mechanism of a small / medium-capacity turbine guide vane opening / closing mechanism, but recently, an electric servomotor has been used from the viewpoint of omission of auxiliary equipment and improvement of economical efficiency. It has become mainstream.
【０００３】この開閉機構には駆動力、すなわち電源が
喪失したとき、水車が無拘束状態で長時間回り放しで運
転されるのを防ぐため、ガイドベーンの水力トルクやウ
エート、スプリング等の補助的な力によって，、自動的
にガイドベーンが閉鎖する機能を持たせたものがある。In order to prevent the water turbine from being left unattended for a long time when the driving force, that is, the power source is lost, this opening / closing mechanism is supplemented by hydraulic torque of guide vanes, weights, springs, and the like. There is one that has a function to automatically close the guide vanes with a certain force.
【０００４】図４にその一例を示す。電動サーボモータ
０１はガイドリング０２、リンク０３、アーム０４を介
してガイドベーン０５を駆動し、その開度を調節して水
車負荷を制御する。FIG. 4 shows an example thereof. The electric servomotor 01 drives the guide vane 05 via the guide ring 02, the link 03, and the arm 04, and adjusts the opening degree to control the turbine load.
【０００５】電源が喪失されると、ガイドベーン０５に
閉方向にかかる水力トルクとウエート０６の補助力によ
って、ガイドベーン０５は自動的に閉鎖する。When the power is lost, the guide vanes 05 are automatically closed by the hydraulic torque applied to the guide vanes 05 in the closing direction and the auxiliary force of the weight 06.
【０００６】[0006]
【発明が解決しようとする課題】電動サーボモータを使
用した機構においては、駆動力が喪失したとき、閉鎖速
度の制御ができなくなって、ガイドベーンが急激に閉鎖
する場合がある。In the mechanism using the electric servomotor, when the driving force is lost, the closing speed cannot be controlled and the guide vane may be closed rapidly.
【０００７】このとき流水は急激に遮断され、水撃作用
によって水車ケーシングを含めた水圧管路内の水圧が異
常に上昇し、水車トラブル発生の原因となる。At this time, the running water is abruptly shut off, and the water hammer causes an abnormal increase in the water pressure in the water pressure pipeline including the water turbine casing, causing troubles in the water turbine.
【０００８】これを防止するためにバッテリ等の予備電
源が設置されているが、コストが高くて大きなスペース
を必要とすると共に、その保守が煩雑である等の課題が
あった。A backup power source such as a battery is installed to prevent this, but there are problems that the cost is high, a large space is required, and the maintenance is complicated.
【０００９】[0009]
【課題を解決するための手段】本発明は前記従来の課題
を解決したもので、ガイドベーンの水力トルク特性又は
ウエート、スプリング等の補助的な力により自己閉鎖能
力を持たせた電動サーボモータを有する水車ガイドベー
ン閉鎖機構において、ダッシュポット、電磁弁及び可変
絞り弁を並列に配設して油圧回路を構成した水車ガイド
ベーン開閉機構である。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and provides an electric servomotor having a self-closing ability by the hydraulic torque characteristics of guide vanes or auxiliary forces such as weights and springs. A hydraulic turbine guide vane opening / closing mechanism, in which a hydraulic turbine guide vane closing mechanism has a hydraulic circuit in which a dashpot, a solenoid valve, and a variable throttle valve are arranged in parallel.
【００１０】[0010]
(1) 電磁弁が付勢された通常時、ダッシュポット複動シ
リンダの両室は開状態の電磁弁及び可変絞り弁を介して
連通され、ガイドリングの開閉、すなわちダッシュポッ
トピストン摺動の抵抗とならない。(1) When the solenoid valve is normally energized, both chambers of the dashpot double-acting cylinder communicate with each other through the solenoid valve and the variable throttle valve that are open, and the resistance of the guide ring opening and closing, that is, the dashpot piston sliding Not
【００１１】(2) 電磁弁が消勢された電源喪失時、電磁
弁は電源が切れるとスプリング等の力で閉状態になる。
ダッシュポット複動シリンダの両室は可変絞り弁のみを
介して連通され、ダッシュポットピストン摺動に抵抗が
発生して、その速度、すなわちガイドベーン閉鎖速度が
減速される。(2) When the solenoid valve is deenergized and power is lost, the solenoid valve is closed by the force of a spring or the like when the power is turned off.
Both chambers of the dashpot double-acting cylinder are communicated with each other through only the variable throttle valve, and resistance is generated in sliding of the dashpot piston to reduce its speed, that is, the guide vane closing speed.
【００１２】(3) 可変絞り弁の開度を調節して油圧回路
の抵抗を変えることにより、ダッシュポットピストンの
摺動抵抗が変化し、ガイドベーン閉鎖速度が任意に調節
される。(3) By adjusting the opening of the variable throttle valve to change the resistance of the hydraulic circuit, the sliding resistance of the dashpot piston changes, and the guide vane closing speed is arbitrarily adjusted.
【００１３】[0013]
【実施例】本発明の一実施例を図１ないし図３に示す。
図１は本発明に成る水車ガイドベーン開閉機構の系統図
である。１は電動サーボモータ、２はガイドリング、３
はリンク、４はアーム、５はガイドベーン、６はウエー
トで、それぞれ図４の０１ないし０６とほぼ同一であ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention is shown in FIGS.
FIG. 1 is a system diagram of a water turbine guide vane opening / closing mechanism according to the present invention. 1 is an electric servo motor, 2 is a guide ring, 3
Is a link, 4 is an arm, 5 is a guide vane, and 6 is a weight, which are substantially the same as 01 to 06 in FIG. 4, respectively.
【００１４】ガイドベーン５開閉機構の一部品であるガ
イドリング２の一箇所には連接棒７を介して、ダッシュ
ポット８が結合される。ダッシュポット複動シリンダ９
の両室に連通して、２ポート２位置切換電磁弁１０、可
変絞り弁１１と逆止弁１２が並列に配設されている。A dashpot 8 is connected to one portion of the guide ring 2 which is one component of the guide vane 5 opening / closing mechanism via a connecting rod 7. Dashpot double acting cylinder 9
A 2 port / 2 position switching solenoid valve 10, a variable throttle valve 11 and a check valve 12 are arranged in parallel so as to communicate with both chambers.
【００１５】逆止弁１２はガイドベーン閉鎖時の回路内
流れを遮断し、ガイドベーン開時には遮断することな
く、ダッシュポットピストン１３の摺動抵抗の減少が図
られる。The check valve 12 shuts off the flow in the circuit when the guide vane is closed, and does not shut off when the guide vane is opened, so that the sliding resistance of the dashpot piston 13 can be reduced.
【００１６】図２は電磁弁１０が付勢された通常時の油
圧回路内流れ方向を示し、実線はガイドベーン閉方向、
点線は開方向を示す。FIG. 2 shows the flow direction in the hydraulic circuit when the solenoid valve 10 is normally energized, and the solid line indicates the guide vane closing direction.
The dotted line indicates the opening direction.
【００１７】図３は電磁弁１０が消勢された電源喪失時
の油圧回路内流れ方向を示す。FIG. 3 shows the flow direction in the hydraulic circuit when the solenoid valve 10 is deenergized and power is lost.
【００１８】[0018]
【発明の効果】本発明によれば、電源喪失時ガイドベー
ン閉鎖速度が任意に減速されて、水撃現象が防止され
る。従って、バッテリ等の予備電源を必要とせず、コス
トの低減、スペースの減少、信頼性の向上が図れる等の
効果がある。According to the present invention, the guide vane closing speed at the time of power loss is arbitrarily reduced to prevent the water hammer phenomenon. Therefore, there is no need for a backup power source such as a battery, and there are effects such as cost reduction, space reduction, and reliability improvement.
【図１】本発明の一実施例に係るガイドベーン開閉機構
の系統図である。FIG. 1 is a system diagram of a guide vane opening / closing mechanism according to an embodiment of the present invention.
【図２】図１の通常時の油の流れ方向を示す図である。FIG. 2 is a diagram showing a flow direction of oil in a normal state of FIG.
【図３】図１の電源喪失時の油の流れ方向を示す図であ
る。FIG. 3 is a diagram showing a flow direction of oil when the power source in FIG. 1 is lost.
【図４】従来のガイドベーン閉鎖機構の説明図である。FIG. 4 is an explanatory view of a conventional guide vane closing mechanism.
【符号の説明】 １ 電動サーボモータ ２ ガイドリング ３ リンク ４ アーム ５ ガイドベーン ６ ウエート ７ 連接棒 ８ ダッシュポット ９ ダッシュポット複数シリンダ １０ 電磁弁 １１ 可変絞り弁 １２ 逆止弁 １３ ダッシュポットピストン[Explanation of symbols] 1 electric servo motor 2 guide ring 3 link 4 arm 5 guide vane 6 weight 7 connecting rod 8 dashpot 9 dashpot multiple cylinders 10 solenoid valve 11 variable throttle valve 12 check valve 13 dashpot piston
フロントページの続き (72)発明者 筒井 隆光 兵庫県高砂市荒井町新浜二丁目８番25号 高菱エンジニアリング株式会社内Continued Front Page (72) Inventor Takamitsu Tsutsui 2-8-25 Niihama, Arai-cho, Takasago, Hyogo Takahishi Engineering Co., Ltd.
Claims (1)
ート、スプリング等の補助的な力により自己閉鎖能力を
持たせた電動サーボモータを有する水車ガイドベーン開
閉機構において、ダッシュポット，電磁弁及び可変絞り
弁を並列に配設して油圧回路を構成したことを特徴とす
る水車ガイドベーン開閉機構。1. A hydraulic turbine guide vane opening / closing mechanism having an electric servomotor having a self-closing ability by hydraulic torque characteristics of a guide vane or auxiliary forces such as weights and springs. A dashpot, a solenoid valve and a variable throttle valve. A hydraulic turbine guide vane opening / closing mechanism in which hydraulic circuits are configured by arranging in parallel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3356820A JPH05180139A (en) | 1991-12-26 | 1991-12-26 | Opening/closing mechanism for water turbine guide vane |
| CA002085410A CA2085410A1 (en) | 1991-12-24 | 1992-12-15 | Agricultural film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3356820A JPH05180139A (en) | 1991-12-26 | 1991-12-26 | Opening/closing mechanism for water turbine guide vane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05180139A true JPH05180139A (en) | 1993-07-20 |
Family
ID=18450940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3356820A Withdrawn JPH05180139A (en) | 1991-12-24 | 1991-12-26 | Opening/closing mechanism for water turbine guide vane |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH05180139A (en) |
| CA (1) | CA2085410A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015206292A (en) * | 2014-04-18 | 2015-11-19 | 株式会社東芝 | Water-wheel inlet valve control device |
-
1991
- 1991-12-26 JP JP3356820A patent/JPH05180139A/en not_active Withdrawn
-
1992
- 1992-12-15 CA CA002085410A patent/CA2085410A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015206292A (en) * | 2014-04-18 | 2015-11-19 | 株式会社東芝 | Water-wheel inlet valve control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2085410A1 (en) | 1993-06-25 |
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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: 19990311 |