JPH0519035B2 - - Google Patents
Info
- Publication number
- JPH0519035B2 JPH0519035B2 JP59094460A JP9446084A JPH0519035B2 JP H0519035 B2 JPH0519035 B2 JP H0519035B2 JP 59094460 A JP59094460 A JP 59094460A JP 9446084 A JP9446084 A JP 9446084A JP H0519035 B2 JPH0519035 B2 JP H0519035B2
- Authority
- JP
- Japan
- Prior art keywords
- movable
- speed
- rotational speed
- movable runner
- blade
- 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.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 230000007423 decrease Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 1
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
- F03B15/00—Controlling
- F03B15/02—Controlling by varying liquid flow
- F03B15/04—Controlling by varying liquid flow of turbines
- F03B15/06—Regulating, i.e. acting automatically
- F03B15/18—Regulating, i.e. acting automatically for safety purposes, e.g. preventing overspeed
-
- 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)
- Control Of Water Turbines (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は可動ランナブレードをもつ可動翼水車
の製御方法。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a method for manufacturing a movable blade water turbine having movable runner blades.
従来、カプラン水車、斜流水車等の可動翼水車
の負荷しや断時、流量調節の手段である案内羽根
は、水圧管路内の水圧上昇を可能な限り低くし、
且つ回転部の最大回転速度上昇を可能な限り小さ
く抑えるように選定された閉鎖速度により制御さ
れている。そして案内羽根の下流側に位置する可
動ランナブレードは、閉動作の開始時機は案内羽
根のそれとほぼ同一であるが、案内羽根よりも一
般には遅れた閉鎖速度で制御されている。この一
つの理由は、負荷しや断時に発生する水圧管路内
の水圧上昇昇を、案内羽根の下流側に位置する可
動ランナブレードによつて発生させないためであ
る。
Conventionally, guide vanes, which are a means of loading, unloading, and flow rate adjustment for movable vane turbines such as Kaplan turbines and mixed-flow turbines, have been used to minimize the rise in water pressure in the penstock pipeline.
In addition, the closing speed is selected to keep the maximum rotational speed increase of the rotating part as small as possible. The movable runner blade located on the downstream side of the guide vane has almost the same closing timing as that of the guide vane, but is generally controlled at a closing speed later than that of the guide vane. One reason for this is that the movable runner blade located downstream of the guide vane prevents the increase in water pressure in the penstock line that occurs when the load is interrupted.
さて、案内羽根の閉鎖速度は、これを速くすれ
ばする程、逆に、水圧管路内の水圧上昇は大とな
るので、両者の兼ね合いから適当当な閉鎖速度が
第１図のように選択されている。 Now, the faster the closing speed of the guide vane is, the greater the increase in water pressure in the penstock pipeline will be, so from the balance of both, an appropriate closing speed is selected as shown in Figure 1. has been done.
即ち、第１図の１Ａは従来の案内羽根の開度を
示す特性図である。２１は可動ランナブレードの
従来の閉鎖動作を示す特性図である。 That is, 1A in FIG. 1 is a characteristic diagram showing the opening degree of the conventional guide vane. 21 is a characteristic diagram showing a conventional closing operation of a movable runner blade.
負荷しや断が起きて、可動翼水車の回転速度３
１が時間の経過と共に上昇し、最大回転速度に達
するまでの時間内に案内羽根および可動ランナブ
レードを急閉鎖１及び、２１していた。 The rotational speed of the movable blade turbine is 3 due to load failure.
1 rose over time, and the guide vanes and movable runner blades were suddenly closed within the time it took to reach the maximum rotational speed.
この結果、案内羽根の閉鎖速度の上流水圧管路
は、案内羽根の閉鎖速度の上流側と可動ランナブ
レード内の水圧とが加算され、上流側水圧管路の
水圧は大きくなり、これに耐える機械強度を要と
し、肉厚を厚くする必要があつた。
As a result, the water pressure in the upstream penstock of the guide vane closing speed is increased by adding the water pressure upstream of the guide vane closing speed and the water pressure inside the movable runner blade, and the water pressure in the upstream penstock becomes large. Strength was essential, and it was necessary to increase the wall thickness.
本発明の目的は、上流側水圧管路の肉厚を薄く
すると共に、可動ランナブレードの寿命を長くし
た可動翼水車の制御方法を提供することにある。 An object of the present invention is to provide a control method for a movable vane water turbine in which the wall thickness of the upstream penstock is reduced and the life of the movable runner blades is extended.
本発明の可動翼水車の制御方法は、負荷しや断
時に可動翼水車の回転速度の経過と共に、速度上
昇し最高速度に達した後、再び減少する速度特性
を有し、
負荷しや断時に可動翼水車の回転速度が最高速
度に達する時間まで、案内羽根を急閉鎖し、かつ
可動ランナブレードが一定開度を保持し、
可動翼水車の回転速度が略最高回転速度付近か
ら減少に転じた時に、案内羽根を急閉鎖から緩や
かな緩閉鎖し、かつ可動ランナブレードを急閉鎖
させることにある。
The control method for a movable vane water turbine of the present invention has a speed characteristic in which the speed increases as the rotational speed of the movable vane water turbine passes, reaches the maximum speed, and then decreases again when the load is off. Until the rotational speed of the movable vane turbine reached its maximum speed, the guide vanes were suddenly closed, the movable runner blades maintained a constant opening, and the rotational speed of the movable vane turbine began to decrease from around the maximum rotational speed. Sometimes, the purpose is to change the guide vane from a sudden closing to a gradual closing, and also to suddenly close the movable runner blade.
案内羽根を急閉鎖中に可動ランナブレードが一
定開度を保持し、可動ランナブレード内の水を流
して、可動ランナブレード内の水を減少させて、
可動ランナブレード内の水圧を減少させ、この
分、上流側水圧管路の水圧を減少できるので、上
流側水圧管路の肉厚を薄くできると共に、回転数
を下げることができる。
While the guide vane is suddenly closed, the movable runner blade maintains a certain opening degree, and the water in the movable runner blade is caused to flow, thereby reducing the water in the movable runner blade.
Since the water pressure in the movable runner blade can be reduced and the water pressure in the upstream penstock can be reduced accordingly, the wall thickness of the upstream penstock can be made thinner and the rotational speed can be lowered.
また可動翼水車の回転速度が略最高速度から減
少に転じた時に、可動ランナブレードを急閉鎖さ
せるようにしたので、可動ランナブレードの破損
を防止して寿命を長くできるようになつた。 Furthermore, the movable runner blades are suddenly closed when the rotational speed of the movable vane turbine decreases from approximately the maximum speed, thereby making it possible to prevent breakage of the movable runner blades and extend their lifespan.
第１図のグラフは、縦軸に負荷しや断からの経
過時間を表し、縦軸に案内羽根及び可動ランナブ
レードの開閉動作特性と回転速度特性を示してい
る。１Ａ及び１Ｂは案内羽根の閉鎖モード及び開
度モードである。２１は従来例の可動ランナブレ
ードよる閉鎖モードである。２２Ａ及び２２Ｂは
本発明の可動ランナブレードよる開度モード及び
閉鎖モードである。３１及び３２は従来例及び本
発明の回転速度特性である。
In the graph of FIG. 1, the vertical axis represents the elapsed time from the load shedding, and the vertical axis represents the opening/closing operation characteristics and rotational speed characteristics of the guide vane and movable runner blade. 1A and 1B are the closed mode and opening mode of the guide vanes. 21 is a closing mode using a conventional movable runner blade. 22A and 22B are open mode and closed mode by the movable runner blade of the present invention. 31 and 32 are rotational speed characteristics of the conventional example and the present invention.
すなわち、負荷しや断時は可動翼水車の回転速
度３２が時間Ｔの経過と共に、速度上昇し時間２
Ｔで最高速度に達した後、再び時間３Ｔで減少す
る速度特性を有し、
負荷しや断時に可動翼水車の回転速度が最高速
度に達する時間１Ｔまで、案内羽根を急閉鎖１Ａ
し、かつ可動ランナブレードが一定開度２２Ａを
保持し、
可動翼水車の回転速度が時間２Ｔで略最高回転
速度から減少に転じた時（時間３Ｔ）に、案内羽
根を急閉鎖から緩やかな緩閉鎖１Ｂし、かつ可動
ランナブレードを急閉鎖２２Ｂさせる。 That is, when the load is interrupted, the rotation speed 32 of the movable blade water turbine increases as time T elapses, and the rotation speed 32 increases until time 2.
It has a speed characteristic that after reaching the maximum speed at T, it decreases again at time 3T, and the guide vane is suddenly closed at 1A until the rotational speed of the movable blade turbine reaches the maximum speed at time 1T when the load is interrupted.
At the same time, when the movable runner blade maintains a constant opening of 22A and the rotational speed of the movable blade turbine starts to decrease from the approximate maximum rotational speed at time 2T (time 3T), the guide vane is changed from sudden closing to gentle relaxation. Close 1B, and quickly close the movable runner blade 22B.
この可動ランナブレードの制御方法によれば案
内羽根を急閉鎖中に可動ランナブレードが一定開
度２２Ａを保持し、可動ランナブレード内の水を
流して、可動翼水車の回転速度にブレーキを掛け
て、第１図のように回転速度３２を下げると共
に、可動ランナブレード内の水を減少させて、可
動ランナブレード内の水圧を減少させ、この分上
流側水圧管路の水圧を減少できるので、上流側水
圧管路の肉厚を薄くできると共に、回転数を下げ
ることができる。 According to this method of controlling the movable runner blade, the movable runner blade maintains a constant opening degree of 22A while the guide vane is suddenly closed, and the water in the movable runner blade is allowed to flow, thereby applying a brake to the rotational speed of the movable blade water turbine. , as shown in Fig. 1, the rotational speed 32 is lowered, the water in the movable runner blade is reduced, the water pressure in the movable runner blade is reduced, and the water pressure in the upstream penstock can be reduced accordingly. The wall thickness of the side hydraulic pipe can be made thinner, and the number of revolutions can be lowered.
一方、可動ランナブレードを一定時間開度２２
Ａすると、可動ランナブレードは水の流れを良く
するために、可動ランナブレードと可動ランナブ
レードとの間隔が広くなるように傾斜した状態に
位置し、回転中の空気抵抗及び遠心力を受けるの
で、この状態を長時間維持すると、可動ランナブ
レードが破損する。 On the other hand, the movable runner blade is opened at 22 degrees for a certain period of time.
A. In order to improve the flow of water, the movable runner blades are located in an inclined state so that the distance between the movable runner blades is wide, and they are subject to air resistance and centrifugal force during rotation. If this state is maintained for a long time, the movable runner blade will be damaged.
しかし、本発明では可動翼水車の回転速度が略
最高速度から減少に転じた時（３Ｔ）に、可動ラ
ンナブレードを急閉鎖２２Ｂさせるようにしたの
で、空気抵抗等が小さくなり、可動ランナブレー
ドが破損しなくなり寿命を長くできるようになつ
た。 However, in the present invention, the movable runner blades are suddenly closed 22B when the rotational speed of the movable blade water turbine starts to decrease from the approximate maximum speed (3T), so air resistance etc. are reduced and the movable runner blades are It is now less likely to break and has a longer lifespan.
以上のように、本発明の可動翼水車の制御方法
によれば、次の効果を達成できる。
As described above, according to the method for controlling a movable blade water turbine of the present invention, the following effects can be achieved.
案内羽根を急閉鎖中に可動ランナブレードが一
定開度を保持し、可動翼水車の回転速度が略最高
速度から減少に転じた時に、可動ランナブレード
を急閉鎖させるようにした。 The movable runner blade maintains a constant opening degree while the guide vane is suddenly closed, and when the rotational speed of the movable blade water turbine starts to decrease from approximately the maximum speed, the movable runner blade is suddenly closed.
この結果可動ランナブレード内の水を流して、
可動ランナブレード内の水を減少させて、可動ラ
ンナブレード内の水圧を減少させ、この分、上流
側水圧管路の水圧を減少できるので、上流側水圧
管路の肉厚を薄くできると共に、回転数を下げる
ことができる。 As a result, the water inside the movable runner blade flows out,
By reducing the water in the movable runner blade, the water pressure in the movable runner blade can be reduced, and the water pressure in the upstream penstock can be reduced by that amount, making it possible to reduce the wall thickness of the upstream penstock, as well as reduce rotation. The number can be lowered.
また可動ランナブレードの破損を防止して長可
動ランナブレードの寿命を長くできるようになつ
た。 It has also become possible to prevent breakage of the movable runner blade and extend the life of the long movable runner blade.
第１図は負荷しや断からの経過時間に対する案
内羽根及び可動ランナブレードの開閉動作と回転
速度の特性を示す図である。
１Ａ及び１Ｂ…案内羽根閉鎖モード及び開度モ
ード、２２Ａ及び２２Ｂ…可動ランナブレードの
開度モード及び閉鎖モード、３２…回転速度特
性。
FIG. 1 is a diagram showing the characteristics of the opening/closing operation and rotational speed of the guide vane and the movable runner blade with respect to the elapsed time after the load sheath breaks. 1A and 1B... Guide vane closing mode and opening mode, 22A and 22B... Opening mode and closing mode of movable runner blade, 32... Rotation speed characteristics.
Claims (1)
ンナブレードを設けた可動翼水車の制御方法にお
いて、 負荷しや断時に可動翼水車の回転速度の経過と
共に、速度上昇し最高速度に達した後、再び減少
する速度特性を有し、 負荷しや断時に可動翼水車の回転速度が最高速
度に達する時間まで、案内羽根を急閉鎖し、かつ
可動ランナブレードが一定開度を保持し、 可動翼水車の回転速度が略最高回転速度付近か
ら減少に転じた時に、案内羽根を急閉鎖から緩や
かな緩閉鎖し、かつ可動ランナブレードを急閉鎖
させることを特徴とする可動翼水車の制御方法。[Scope of Claims] 1. In a method of controlling a movable vane turbine provided with guide vanes and movable runner blades as means for flow rate adjustment, the speed increases as the rotational speed of the movable vane turbine increases to the maximum speed when the load is interrupted. It has a speed characteristic that decreases again after reaching the maximum speed, and when the load is interrupted, the guide vanes are suddenly closed and the movable runner blades maintain a constant opening until the rotational speed of the movable blade turbine reaches its maximum speed. , A control for a movable vane water turbine characterized in that when the rotational speed of the movable vane water turbine starts to decrease from approximately the maximum rotational speed, the guide vanes are changed from sudden closing to gradual closing, and the movable runner blades are suddenly closed. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59094460A JPS60240880A (en) | 1984-05-14 | 1984-05-14 | Control of movable vane turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59094460A JPS60240880A (en) | 1984-05-14 | 1984-05-14 | Control of movable vane turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60240880A JPS60240880A (en) | 1985-11-29 |
| JPH0519035B2 true JPH0519035B2 (en) | 1993-03-15 |
Family
ID=14110880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59094460A Granted JPS60240880A (en) | 1984-05-14 | 1984-05-14 | Control of movable vane turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60240880A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5523342A (en) * | 1978-08-07 | 1980-02-19 | Hitachi Ltd | Guide vane controller of hydraulic machine |
| JPS5526063A (en) * | 1978-08-16 | 1980-02-25 | Hitachi Ltd | Water wheel speed governor |
| JPS5683575A (en) * | 1979-12-10 | 1981-07-08 | Hitachi Ltd | Protective system for hydraulic machine |
| JPS5974374A (en) * | 1982-10-20 | 1984-04-26 | Fuji Electric Co Ltd | Method of closing turbine guide vane |
-
1984
- 1984-05-14 JP JP59094460A patent/JPS60240880A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5523342A (en) * | 1978-08-07 | 1980-02-19 | Hitachi Ltd | Guide vane controller of hydraulic machine |
| JPS5526063A (en) * | 1978-08-16 | 1980-02-25 | Hitachi Ltd | Water wheel speed governor |
| JPS5683575A (en) * | 1979-12-10 | 1981-07-08 | Hitachi Ltd | Protective system for hydraulic machine |
| JPS5974374A (en) * | 1982-10-20 | 1984-04-26 | Fuji Electric Co Ltd | Method of closing turbine guide vane |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60240880A (en) | 1985-11-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6336322B1 (en) | Method of controlling a pump turbine | |
| JPH0519035B2 (en) | ||
| US4382745A (en) | Method of controlling wicket gates of a pump-turbine | |
| US4255078A (en) | Method of controlling operation of multistage hydraulic machines | |
| US4346304A (en) | Method of controlling operation of Francis type pump turbines | |
| JPS5912177A (en) | Increase and decrease method of revolving speed of valve water wheel | |
| JPS5840101Y2 (en) | gate opening/closing device | |
| JPS6131671A (en) | Pelton wheel | |
| US4168935A (en) | Apparatus and method for controlling water turbine | |
| JPS63173853A (en) | Operating method for axial-flow water turbine with discharge valve | |
| JP2878856B2 (en) | How to start a hydraulic turbine | |
| JPS6157471B2 (en) | ||
| JPH0565869A (en) | Needle servomotor for pelton turbine | |
| JPS63138170A (en) | Guide vane shutting system for water wheel and reversible pump-turbine | |
| JPH05180140A (en) | Emergency guide vane closing device for water turbine | |
| JPH051660Y2 (en) | ||
| JPS6153465A (en) | Stopping method of hydraulic turbine | |
| JPS6230303B2 (en) | ||
| JP4006149B2 (en) | Pump turbine | |
| JP2001132610A (en) | Pump turbine | |
| JPS628636B2 (en) | ||
| JP4078003B2 (en) | Pump water wheel | |
| JP2002180950A (en) | Operation control method for reversible pump-turbine | |
| JPH04278608A (en) | Control method for hydraulic power plant facilities having discharge valve | |
| SU1213224A1 (en) | Turbine controlling method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |