JPS60116877A - Mechanical speed governor for use in hydroelectric power plant - Google Patents
Mechanical speed governor for use in hydroelectric power plantInfo
- Publication number
- JPS60116877A JPS60116877A JP58222068A JP22206883A JPS60116877A JP S60116877 A JPS60116877 A JP S60116877A JP 58222068 A JP58222068 A JP 58222068A JP 22206883 A JP22206883 A JP 22206883A JP S60116877 A JPS60116877 A JP S60116877A
- Authority
- JP
- Japan
- Prior art keywords
- switching valve
- way switching
- hydraulic
- valve
- servo motor
- 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
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
- 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
- F03B15/08—Regulating, i.e. acting automatically by speed, e.g. by measuring electric frequency or liquid flow
-
- 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)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は水力発電所の調速機に係り、特に、案□内羽根
開閉用油圧サーボモータを任意の開度に固定し、水車を
運転する時に好適なロック装置を設けたことを特徴とす
る水力発電所の機械式調速機に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a speed governor for a hydroelectric power plant, and in particular, a hydraulic servo motor for opening and closing guide vanes is fixed at an arbitrary opening to operate a water turbine. The present invention relates to a mechanical speed governor for a hydroelectric power plant, characterized in that it is sometimes provided with a suitable locking device.
従来の機械式調速機は、油圧サーボモータを任意の開度
に固定し、水車を運転する場合、すなわち、案内羽根開
度を任意の開度に固定し、水車を運転する必要がある場
合、負荷制限装置により行なっていたために油圧サーボ
モータの固定すべき任意の開度において、Ａ＼車の回転
数が上昇すると調速作用が働き、油圧サーボモータを閉
側動作し、任意の開度に固定できなくなる問題があった
。Conventional mechanical speed governors are used when operating a water turbine with a hydraulic servo motor fixed at an arbitrary opening, that is, when it is necessary to operate a water turbine with the guide vane opening fixed at an arbitrary opening. , when the rotational speed of the A\car increases at an arbitrary opening that should be fixed by the hydraulic servo motor due to the load limiting device, the speed regulating action works and the hydraulic servo motor is operated to the closing side, allowing the hydraulic servo motor to be fixed at any opening. There was a problem that it could not be fixed.
以下、第１図を用いて詳細に説明する。A detailed explanation will be given below using FIG. 1.
従来の機械式調速機は、水車の案内羽根を開閉させる油
圧サーボモータ１と、水車の回転の変化を検出するスビ
ーダ２と、スピーダ２により操作され油圧サーボモータ
ｌへ開閉油圧信号を供給す乞−次三方切換弁３と、−次
三方切換弁３からの油圧信号を増幅する二次三方切換弁
４と、調速機の安定性の為の油圧サーボモータ１とスピ
ーダ２の間に設けた弾性復元機構５と、油圧サーボモー
タｌを任膚、の開度以下に制限する負荷制限装置６と、
−次王方切換弁３と二次三方切換弁４とを連結するレバ
ー７と、油圧サーボモータ１及び負荷制限装置６と一次
三方切換弁３を連結するレバー８と油圧サーボモータ１
から弾性復元機構５及び−次王方切換弁３への帰環景を
調整するカム９及びカムｌＯから構成される。A conventional mechanical speed governor consists of a hydraulic servo motor 1 that opens and closes the guide vanes of the water turbine, a speeder 2 that detects changes in the rotation of the water turbine, and a speeder 2 that is operated by the speeder 2 to supply opening/closing hydraulic signals to the hydraulic servo motor 1. A secondary three-way switching valve 3, a secondary three-way switching valve 4 that amplifies the hydraulic signal from the secondary three-way switching valve 3, and a hydraulic servo motor 1 and speeder 2 for stabilizing the speed governor. an elastic restoring mechanism 5, a load limiting device 6 that limits the hydraulic servo motor l to an arbitrary opening degree or less;
- A lever 7 that connects the primary three-way switching valve 3 and the secondary three-way switching valve 4, a lever 8 that connects the hydraulic servo motor 1, the load limiting device 6, and the primary three-way switching valve 3, and the hydraulic servo motor 1.
It is composed of a cam 9 and a cam 10 that adjust the return view from the elastic restoring mechanism 5 to the next-to-next rotation switching valve 3.
この機械式調速機械で、現状の案内羽根開度。With this mechanical speed governor, the current guide vane opening.
すなわち、油圧サーボータの開度より閉側の開度で固定
し運転する必要がある場合は、負荷制限装置６のカム１
１を第１図中の矢印方向に回転させ、レバー８により点
Ｘ、Ｙを支点とし、−次三方切換弁３のスリーブ１２を
押し下げ二次三方切換弁４の操作油を排油し、二次三方
切換弁４を閉側に切換え、油圧サーボモータ、ｌを閉動
作させる。さらに、二次三方切換弁４と油圧サーボモー
タｌからの帰環により油圧サーボモータ１が所定の開度
まで閉動作したときに一次三方切換弁３は中立位置に復
帰し調速機は安定する。In other words, if it is necessary to operate with the hydraulic servotor fixed at an opening on the closed side, the cam 1 of the load limiting device 6
1 in the direction of the arrow in FIG. Next, the three-way switching valve 4 is switched to the closed side, and the hydraulic servo motor 1 is operated to close. Furthermore, when the hydraulic servo motor 1 closes to a predetermined opening degree due to the loop return from the secondary three-way switching valve 4 and the hydraulic servo motor l, the primary three-way switching valve 3 returns to the neutral position and the governor becomes stable. .
しかし、ここで電力系統の電圧変動等により。However, due to voltage fluctuations in the power grid, etc.
水車の回転が上昇すると調速作用により、スビーダ２は
一次三方切換弁３のスリーブ１２を引き下げ、上記と同
様の原理で油圧サーボモータｌをさらに閉側へ動作させ
、所定の開度に固定した運転が不可能となる。When the rotation of the water turbine increases, the speed regulating action causes the subida 2 to pull down the sleeve 12 of the primary three-way switching valve 3, and operate the hydraulic servo motor l further toward the closing side using the same principle as above, fixing it at a predetermined opening. Driving becomes impossible.
この様に、従来の機械式調速機は、水車の回転が上昇し
た場合、油圧サーボモータｌを任意の開度に固定した運
転が出来ないため、特に、数台の水車の結合運転を開始
する場合、すなわち、一方の水車をある負荷（ある案内
羽根開度）で固定運転を経続しておき、他方の水車を水
車の負荷に合せるよう負荷調整運転を行ない双方の負荷
が合致した時点で結合を完了する場合に結合不可能とな
る問題があった。In this way, with conventional mechanical speed governors, when the rotation of the water turbine increases, it is not possible to operate the hydraulic servo motor l at a fixed opening, so it is especially important to start the combined operation of several water turbines. In other words, one water turbine continues to be operated at a certain load (a certain guide vane opening), and the other water turbine is operated with load adjustment to match the load of the water turbine, and when both loads match. There was a problem where the merge could not be completed when the merge was completed.
、本発明の目的は、数台の水車の結合運転をする場合等
の水車の案内羽根開度、すなわち、油圧サーボモータの
開度を任意の位置に固定する制御が可能な機械式調速機
を提供するにある。An object of the present invention is to provide a mechanical speed governor that can control the opening of the guide vanes of a water turbine, that is, the opening of a hydraulic servo motor, to be fixed at an arbitrary position when several water turbines are operated in combination. is to provide.
本発明は、油圧ザーボモータの開度を固定する信号が入
力された時点で、二次三方切換弁と油圧サーボモータ間
で閉ループを形成し、さらに、−次三方切換弁からの油
圧信号をしゃ断することで、水車の回転速度等が変化し
ても、油圧サーボモータに影響することなく、所定の開
度に固定できるよう、三方切換弁とリリーフバルブを旬
月した構成となっている。The present invention forms a closed loop between the secondary three-way switching valve and the hydraulic servo motor when a signal for fixing the opening degree of the hydraulic servo motor is input, and further cuts off the hydraulic signal from the secondary three-way switching valve. Therefore, even if the rotational speed of the water turbine changes, the three-way switching valve and relief valve are configured so that the opening can be fixed at a predetermined opening without affecting the hydraulic servo motor.
以下、第２図及び第３図を用いて一実施例を説明する。 One embodiment will be described below with reference to FIGS. 2 and 3.
実施例の構成は、第１図に示す従来の機械式調速機の一
次三方切換弁３と二次三方切換ブ↑４とを連結するレバ
ー７と、油圧サーボモータ１及び負荷制限装置６と一次
三方切換弁３を連結するレバー８により動作せしめられ
るリリーフバルブ１８と、−次三方切換弁３から二次三
方切換弁４へ供給される油圧信号をしゃ断しリリーフバ
ルブ１８からの油圧信号を二次三方切換弁４に供給する
三方切換弁１９からなるロック装置２０を従来の機械式
調速機に付加したものである。The configuration of the embodiment includes a lever 7 connecting the primary three-way switching valve 3 and the secondary three-way switching valve ↑4 of a conventional mechanical speed governor shown in FIG. 1, a hydraulic servo motor 1, a load limiting device 6, The relief valve 18 operated by the lever 8 connecting the primary three-way switching valve 3 and the hydraulic signal supplied from the secondary three-way switching valve 3 to the secondary three-way switching valve 4 are cut off, and the hydraulic signal from the relief valve 18 is switched off. A locking device 20 consisting of a three-way switching valve 19 that supplies the next three-way switching valve 4 is added to a conventional mechanical speed governor.
ここでリリーフバルブ１８は、レバー７とレバー８に連
結され動作するパイロットバルブ１４と、パイロットバ
ルブ１４に追従して動作するバルブシート】３と、バル
ブシート１３を動作せしめるバネ１５と、バルブシート
１３の動作を固定する油圧ピストン１７より構成されて
いる。Here, the relief valve 18 includes a pilot valve 14 that is connected to the levers 7 and 8 and operates, a valve seat 3 that operates following the pilot valve 14, a spring 15 that operates the valve seat 13, and a spring 15 that operates the valve seat 13. It is composed of a hydraulic piston 17 that fixes the operation of the hydraulic piston 17.
油圧サーボモー、夕を固定する信号は、油圧ボートＰに
より油圧信号として供給される。すなわち、通常運転時
（油圧サーボモータを固定しない場合）は、油圧ボート
Ｐからの油圧信号がないために一次三方切換弁３からの
油圧信号は二方切換ブｒ１９を介し二次三方切換弁４へ
供給される。さらに、リリーフバルブ１８と油圧ピスト
ン１７の油圧も油圧ボートＰより供給される。このよう
に、通常運転時は、本発明によりイ」加したロック装置
２０は何ら寄与せず従来の機械式調速機と同様の制御を
行なう。尚、三方切換弁１６は、油圧サーボモータを固
定する４８号に対し、常に待機する必要があるため、バ
ネ５の作用により常にバルブシート１３とパイロットバ
ルブ１４は中立位置を保つように動作する。The signal for fixing the hydraulic servo motor is supplied by the hydraulic boat P as a hydraulic signal. That is, during normal operation (when the hydraulic servo motor is not fixed), since there is no hydraulic signal from the hydraulic boat P, the hydraulic signal from the primary three-way switching valve 3 is sent to the secondary three-way switching valve 4 via the two-way switching valve r19. supplied to Further, the hydraulic pressure for the relief valve 18 and the hydraulic piston 17 is also supplied from the hydraulic boat P. In this manner, during normal operation, the locking device 20 added according to the present invention does not make any contribution and performs the same control as a conventional mechanical speed governor. Since the three-way switching valve 16 must always be on standby with respect to No. 48 which fixes the hydraulic servo motor, the valve seat 13 and pilot valve 14 are always operated to maintain the neutral position by the action of the spring 5.
油圧サーボモータ１を固定する信号が、油圧ボートＰよ
り油圧（１１号として供給されると三方切換ブｔ１９が
切り換わり、−次三方切換弁３から二次三方切換弁４へ
供給されていた油圧信号をしゃ断し、同時に三方切換弁
１６のＱボートと二次三方切換弁４を連通する。When the signal for fixing the hydraulic servo motor 1 is supplied from the hydraulic boat P as hydraulic pressure (No. 11), the three-way switching button t19 switches, and the hydraulic pressure that was being supplied from the - secondary three-way switching valve 3 to the secondary three-way switching valve 4 is switched. The signal is cut off, and at the same time, the Q boat of the three-way switching valve 16 and the secondary three-way switching valve 4 are communicated.
一方、同時に油圧ボートｌ）からの油圧信号は、油圧ピ
ストン１７を加圧しバルブシート１３を固定し、さらに
、バルブシー１−１３のＱ２ポートに供給される。この
時、バルブシー１〜１３とパイロットバルブ１４は中立
状態にある。Meanwhile, at the same time, a hydraulic signal from the hydraulic boat l) pressurizes the hydraulic piston 17 to fix the valve seat 13, and is further supplied to the Q2 port of the valve seat 1-13. At this time, the valve seats 1 to 13 and the pilot valve 14 are in a neutral state.
これで油圧サーボモータ１は所定の開度に固定される。The hydraulic servo motor 1 is now fixed at a predetermined opening degree.
すなわち、油圧サーボモータｌが何らかの原因で開動作
した場合、その動きはレバー８を介して帰環されパイロ
ットバルブ１４を押し下げバルブシート１３との中立が
くずれ二次三方切換弁４の圧油を排油し、二次三方切換
弁を閉側へ動作することにより、油圧サーボモータ１を
閉動作させる。この時、二次三方切換弁４の動作はレバ
ー７により帰環され、さらに油気サーボモータ１の動き
もレバー８を介して帰環される。この両帰還の合成され
たものにより、パイロットバルブ１４とバルブシート１
３を中立関係に復帰せしめる。油圧サーボモータｌが閉
動作した時も同様である、。That is, when the hydraulic servo motor 1 is opened for some reason, the movement returns to the loop via the lever 8 and pushes down the pilot valve 14, causing the neutral relationship with the valve seat 13 to collapse and draining the pressure oil from the secondary three-way switching valve 4. The hydraulic servo motor 1 is closed by applying oil and operating the secondary three-way switching valve to the closing side. At this time, the operation of the secondary three-way switching valve 4 is returned via the lever 7, and the movement of the oil/air servo motor 1 is also returned via the lever 8. By the combination of these two feedbacks, the pilot valve 14 and the valve seat 1
3 to return to neutrality. The same applies when the hydraulic servo motor l performs a closing operation.
すなわち、油圧サーボモータの開度を固定する信号が入
力された時点で、−次三方切換弁から二次三方切換弁に
供給される油圧信号をしゃ断しくすなわち、水車の回転
変化の影響をしゃ断する）、二次三方切換弁と油気サー
ボモータ間で閉ループを形成し、油圧サーボモータの所
定の開度に対し、微小の位置制御をすることにより、油
圧サーボモータを所定の開度に固定することができる。That is, at the time when a signal for fixing the opening degree of the hydraulic servo motor is input, the hydraulic signal supplied from the -order three-way switching valve to the secondary three-way switching valve is cut off, that is, the influence of rotational changes of the water turbine is cut off. ), a closed loop is formed between the secondary three-way switching valve and the oil-air servo motor, and the hydraulic servo motor is fixed at a predetermined opening by performing minute position control for the predetermined opening of the hydraulic servo motor. be able to.
本発明によれば、油圧サーボモータの開度、すなわち、
案内羽根の開度を所定の位置に固定し運転することがで
きるので、機械式調速機をもつ水力発電所で数台の結合
運転をする場合、その結合作業をスフ１−ズに行なうこ
とができる。According to the present invention, the opening degree of the hydraulic servo motor, that is,
Since it is possible to operate with the opening of the guide vanes fixed at a predetermined position, when several units are operated together at a hydroelectric power plant with a mechanical speed governor, the connection work can be done in one step. I can do it.
第１図は従来の機械式調速機の系統図、第２図は本発明
の一実施例の機械式調速機の系統図、第：３図は本発明
によるロック装置の系統図である。Figure 1 is a system diagram of a conventional mechanical speed governor, Figure 2 is a system diagram of a mechanical speed governor according to an embodiment of the present invention, and Figure 3 is a system diagram of a locking device according to the present invention. .
Claims (1)
、前記水車の回転の変化を検出するスピーダと、前記ス
ピーダにより操作され、前記油圧サーボモータへ開閉油
圧信号を供給する一次三方切換弁と、前記−次王方切換
弁からの油圧信号を増幅し、前記油圧サーボモータに供
給する二次三方切換弁と、前記油圧サーボモータを一定
開度以下に制限する負荷制限装置とからなる機械式調速
機において、 前記−次三方切換弁と前記二次三方切換弁の間に外部信
号により動作し前記−次三方切換弁から前記二次三方切
換弁への油圧（ｉ号をしヤ断する三方切換弁と、前記三
方切換弁が動作したときに前に２−次三方切換弁に代っ
て前記二次三方切換弁への油圧信号を供給する三方切換
弁と、前記三方切換弁のバルブシートを固定する油圧ピ
ストンから成るリリーフバルブとから楕成さＩしたロッ
ク装置を設け、前記油圧サーボモータと前記二次三方切
換弁とで閉ループ制御構成したことを特徴とする水力発
電所の機械式調速機。[Claims] 11. a hydraulic servo motor that opens and closes the guide vanes of the water turbine; a speeder that detects changes in the rotation of the water turbine; a primary three-way switching valve that is operated by the speeder and supplies an opening/closing hydraulic signal to the hydraulic servo motor; In a mechanical speed governor comprising a secondary three-way switching valve that amplifies a hydraulic signal from a king switching valve and supplies it to the hydraulic servo motor, and a load limiting device that limits the opening of the hydraulic servo motor to a certain opening or less. , a three-way switching valve operated by an external signal between the secondary three-way switching valve and the secondary three-way switching valve to cut off the hydraulic pressure (i) from the secondary three-way switching valve to the secondary three-way switching valve; , fixing a three-way switching valve that supplies a hydraulic signal to the secondary three-way switching valve in place of the secondary three-way switching valve when the three-way switching valve operates, and a valve seat of the three-way switching valve; 1. A mechanical speed governor for a hydroelectric power plant, characterized in that a locking device having an oval shape is provided with a relief valve consisting of a hydraulic piston, and closed loop control is configured with the hydraulic servo motor and the secondary three-way switching valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58222068A JPS60116877A (en) | 1983-11-28 | 1983-11-28 | Mechanical speed governor for use in hydroelectric power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58222068A JPS60116877A (en) | 1983-11-28 | 1983-11-28 | Mechanical speed governor for use in hydroelectric power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60116877A true JPS60116877A (en) | 1985-06-24 |
Family
ID=16776606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58222068A Pending JPS60116877A (en) | 1983-11-28 | 1983-11-28 | Mechanical speed governor for use in hydroelectric power plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60116877A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635491A (en) * | 2012-04-25 | 2012-08-15 | 中国水电顾问集团西北勘测设计研究院 | Combined adjusting method of water turbine |
| CN102650259A (en) * | 2012-04-25 | 2012-08-29 | 中国水电顾问集团西北勘测设计研究院 | Joint control device and method for low waterhead Kaplan turbine |
| CN102650257A (en) * | 2012-04-25 | 2012-08-29 | 中国水电顾问集团西北勘测设计研究院 | Double-control device and method for low waterhead Kaplan turbine |
-
1983
- 1983-11-28 JP JP58222068A patent/JPS60116877A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635491A (en) * | 2012-04-25 | 2012-08-15 | 中国水电顾问集团西北勘测设计研究院 | Combined adjusting method of water turbine |
| CN102650259A (en) * | 2012-04-25 | 2012-08-29 | 中国水电顾问集团西北勘测设计研究院 | Joint control device and method for low waterhead Kaplan turbine |
| CN102650257A (en) * | 2012-04-25 | 2012-08-29 | 中国水电顾问集团西北勘测设计研究院 | Double-control device and method for low waterhead Kaplan turbine |
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