JPS58174107A - Electron-hydraulic type speed controller - Google Patents
Electron-hydraulic type speed controllerInfo
- Publication number
- JPS58174107A JPS58174107A JP5657282A JP5657282A JPS58174107A JP S58174107 A JPS58174107 A JP S58174107A JP 5657282 A JP5657282 A JP 5657282A JP 5657282 A JP5657282 A JP 5657282A JP S58174107 A JPS58174107 A JP S58174107A
- Authority
- JP
- Japan
- Prior art keywords
- steam
- control means
- valve opening
- electron
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/02—Arrangement of sensing elements
- F01D17/06—Arrangement of sensing elements responsive to speed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
- Control Of Velocity Or Acceleration (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、蒸気タービン等の原動機に用いられて好適な
電子油圧式調速装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electro-hydraulic speed governor suitable for use in a prime mover such as a steam turbine.
第１図は従来の電子油圧式調速装置を示す一路図である
。FIG. 1 is a schematic diagram showing a conventional electro-hydraulic speed governor.
原子力発電所または火力発電所用蒸気タービン１の蒸気
弁３は、連結棒４が組み合わされた連結機構５を介して
サーボモータ７に連結されている。A steam valve 3 of a steam turbine 1 for a nuclear power plant or a thermal power plant is connected to a servo motor 7 via a connecting mechanism 5 to which a connecting rod 4 is combined.
このサーボモータ７はシリンダ９とピストン１１とから
構成され、シリンダ９にはダンプ弁１２が配設されてシ
リンダ９内の油を流出可能とする。The servo motor 7 is composed of a cylinder 9 and a piston 11, and the cylinder 9 is provided with a dump valve 12 to allow oil in the cylinder 9 to flow out.
サーボモータ７は管を介して電油変換器１３に連結され
、との電油変換器１３は加算器１５を介して低値選択回
路１６に接続されている。すなわち、電油変換器１３は
、低値選択回路１６からの蒸気弁開度指令信号ＡＫ応じ
た油をサーボモータ７に供給している。また、サーボモ
ータ７には、ピストン１１の移転量を検出して蒸気弁３
の開度を検出する蒸気弁開度検出器１７が配設寧れてい
る。この蒸気弁開度検出器１７は、検出信号整形回路１
９等を介して加算器１５に接続され、蒸気弁開度検出ａ
１７からの蒸気弁開度検出信号Ｂをフィードバックさせ
ている。The servo motor 7 is connected via a tube to an electro-hydraulic converter 13, which is connected via an adder 15 to a low value selection circuit 16. That is, the electro-hydraulic converter 13 supplies oil to the servo motor 7 according to the steam valve opening command signal AK from the low value selection circuit 16. The servo motor 7 also detects the amount of movement of the piston 11 and controls the steam valve 3.
A steam valve opening degree detector 17 is provided to detect the opening degree of the steam valve. This steam valve opening degree detector 17 includes a detection signal shaping circuit 1
It is connected to the adder 15 via 9 etc., and the steam valve opening degree detection a
The steam valve opening detection signal B from 17 is fed back.
前記低値選択回路１６と加算器１５との中間点および加
算器１５と検出信号整形回路１９との中間点には開度信
号診断回路２１が接続され、蒸気弁開度検出信号Ｂが一
定時間の後においてもなお蒸気弁開度検出信号人と一致
しない場合に、操作者に警告信号を発信可能としている
。An opening signal diagnosis circuit 21 is connected to an intermediate point between the low value selection circuit 16 and the adder 15 and an intermediate point between the adder 15 and the detection signal shaping circuit 19, and the steam valve opening detection signal B is output for a certain period of time. Even after this, if the steam valve opening degree detection signal still does not match the person, a warning signal can be sent to the operator.
したがって、蒸気弁開度検出信号Ｂが蒸気弁開度指令信
号Ａと一致する４合には、電波変換器１３の作動が停止
し、蒸気弁３の開閉動作が停止する。一方、蒸気弁３、
サーボモータ７、電油変換器１３および蒸気弁開度検出
器１７等の故障により前記両信号Ａ、Ｂが一致しない場
合には、電油変換器１３が作動し続け、蒸気弁３の開閉
動作が継続するので、前記警告を受けた操作者は、蒸気
タービン１の異常回転を防止する友めに１ ダンプ弁１
２を開いて蒸気弁３を閉じる。Therefore, when the steam valve opening degree detection signal B matches the steam valve opening degree command signal A, the operation of the radio wave converter 13 is stopped and the opening/closing operation of the steam valve 3 is stopped. On the other hand, steam valve 3,
If the signals A and B do not match due to a failure in the servo motor 7, electro-hydraulic converter 13, steam valve opening detector 17, etc., the electro-hydraulic converter 13 continues to operate, and the steam valve 3 opens and closes. continues, so the operator who received the warning must operate the dump valve 1 to prevent abnormal rotation of the steam turbine 1.
2 is opened and steam valve 3 is closed.
ところが、蒸気弁＄およびサーボモータ７等の故障に対
しては、危険を防止するためＫＭ気メタ−ビン１急停止
するのはやむをえないものの、蒸気弁開度検出器１７お
よび検出信号整形回路１９等の補機部品の故障に対して
蒸気タービン１を急停止するのは極めてロスが大！い、
すなわち、この蒸気タービン１の急停止によって、電力
系統に急激な擾亀を与えて電力供給のサービス性を低下
させるとと４に、ボイラに蓄積された熱エネルギ本発明
は、上記従来の問題点に鑑みなされたものであって、蒸
気タービ／の運転の信頼性を向上させるとともに１系の
エネルギ効率を向上させることができる電子油圧式調速
装置を提供することを目的とする。However, in the event of a failure in the steam valve, servo motor 7, etc., it is unavoidable to suddenly stop the KM gas meta-bin 1 to prevent danger, but the steam valve opening detector 17, detection signal shaping circuit 19, etc. Stopping the steam turbine 1 suddenly in response to a failure in an auxiliary component would be extremely costly! stomach,
That is, the sudden stop of the steam turbine 1 causes a sudden disturbance to the electric power system and deteriorates the serviceability of electric power supply.4. The object of the present invention is to provide an electro-hydraulic speed governor that can improve the reliability of steam turbine operation and the energy efficiency of the first system.
上記目的を達成するために１原動機への作動流体量を調
整する弁のｌ＃ＩＦＲ指令信号に基づき皺伸を開閉可能
とする複数個の機器からなる制御手段と、該制御手段と
並列に接続される該制御手段の動特性モデルと、前記制
御手段と動特性モデルの両者の出力側に連結されて核両
出力を比較し、かつ該両出力の一方を選択的に前記制御
手段の入力側にフィードバックさせる診断回路と、を内
蔵するものであり、前記制御手段の故障の有無を前記診
断回路によって検出し、皺制御手段に故障がある場合に
のみ、鍍診斬回路によって前記動特性モデルの出力を前
記制御手段にフィードバックさせ、前記原動機を緩停止
可能とさせるものである。In order to achieve the above purpose, a control means consisting of a plurality of devices that can open and close the wrinkle extension based on the l#IFR command signal of the valve that adjusts the amount of working fluid to the prime mover is connected in parallel with the control means. a dynamic characteristic model of the control means, which is connected to the output side of both the control means and the dynamic characteristic model, and compares both outputs, and selectively selects one of the two outputs from the input side of the control means. The diagnostic circuit detects whether or not there is a failure in the control means, and only when there is a failure in the wrinkle control means, the diagnosing circuit detects the dynamic characteristic model. The output is fed back to the control means, thereby making it possible to slowly stop the prime mover.
以下、本発明の実施例を図面を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
第３図は、本発明に係る電子油圧式調速装置の一実施例
を示す回路図であり、従来例と同様な部分は同一の符号
を付すことＫより説明を省略する。FIG. 3 is a circuit diagram showing an embodiment of the electro-hydraulic speed governor according to the present invention, and the same parts as in the conventional example are denoted by the same reference numerals and the explanation thereof will be omitted.
制御手段としての電油変換器１３、サーボモータ７、連
結機構５、蒸気弁開度検出回路（、ＩＩ気気量開度検出
器１７よび検出信号整形回路１９等の総称。以下同じ、
）の動特性モデルは第２図のブロック線図によって示さ
れる。すなわち、電池変換器１３、サーボモータ７、連
結機構５のそれぞれの動特性ｉ３Ａ、７人、５人は直列
に接続され、また蒸気弁開度検出回路の動特性１７人は
、電油変換器およびサーボモータの動特性１３Ａ、７Ａ
と並列に接続されている。A general term for the electro-hydraulic converter 13, servo motor 7, coupling mechanism 5, steam valve opening detection circuit (II air flow opening detector 17, detection signal shaping circuit 19, etc.) as control means.The same applies hereinafter.
) is shown by the block diagram in FIG. That is, the dynamic characteristics i3A, 7 and 5 of the battery converter 13, the servo motor 7, and the coupling mechanism 5 are connected in series, and the dynamic characteristics of the steam valve opening detection circuit 17 are the same as those of the electro-hydraulic converter. and dynamic characteristics of servo motor 13A, 7A
are connected in parallel.
動特性モデル２２０入力側、即ち電池変換器の動特性１
３人の入力端は加算器１５と電油変換器１３との中間点
く接続され、また動特性モデル２２の出力側、即ち蒸気
弁開度熔出回路の動特性１７Ａの出力増は、加算器２０
を介して診断回路２１に接続されている。更に１蒸気弁
開度検出回路の動特性１７Ａの出力端は、スイッチＳｍ
を介して加算器１５に接続され、このスイッチｆ９ｍは
診断回路２１に接続されて、この診断回路２１により開
閉可能とされる。Dynamic characteristics model 220 input side, that is, dynamic characteristics 1 of the battery converter
The three input terminals are connected to the midpoint between the adder 15 and the electro-hydraulic converter 13, and the output side of the dynamic characteristic model 22, that is, the output increase of the dynamic characteristic 17A of the steam valve opening degree melting circuit is vessel 20
It is connected to the diagnostic circuit 21 via. Furthermore, the output terminal of the dynamic characteristic 17A of the steam valve opening detection circuit is connected to the switch Sm.
The switch f9m is connected to the adder 15 via the adder 15, and the switch f9m is connected to the diagnostic circuit 21 and can be opened and closed by the diagnostic circuit 21.
一方、加算器１５と検出信号整形回路１９との関にはス
イッチＳＫが配設され、このスイッチ８Ｍはスイッチ８
茸と同様に診断回路２１に接続され、この診断回路２１
により開閉可能とされる。On the other hand, a switch SK is disposed between the adder 15 and the detection signal shaping circuit 19, and this switch 8M is connected to the switch 8M.
It is connected to the diagnostic circuit 21 in the same way as the mushroom, and this diagnostic circuit 21
It can be opened and closed.
また、スイッチ８ｔと検出信号整形回路１９との中間点
は加算器２０を介して診断回路２１に接続されている。Further, an intermediate point between the switch 8t and the detection signal shaping circuit 19 is connected to a diagnostic circuit 21 via an adder 20.
上記診断回路２１は、検出信号整形回路１９および蒸気
弁開度検出回路のＪＩ２１特性１７Ａからの信号を比較
し、両者の差が小さいときにはスイッチ８１を閉じ、ス
イッチ８禽を開く。一方両者の差が大きいときには、制
御手段１＆ｌｌＫ故障があるものと診断して、スイッチ
Ｓ！を開きスイッチＳｍを閉じ、動特性モデル２２側の
出力のみを加算器１５にフィードバックさせるとともに
、操作者に故障である旨を告知するアラーム信号を送る
。The diagnostic circuit 21 compares the signals from the JI21 characteristic 17A of the detection signal shaping circuit 19 and the steam valve opening detection circuit, and when the difference between the two is small, closes the switch 81 and opens the switch 8. On the other hand, if the difference between the two is large, it is diagnosed that there is a failure in the control means 1&llK, and the switch S! is opened, switch Sm is closed, only the output from the dynamic characteristic model 22 is fed back to the adder 15, and an alarm signal is sent to the operator to notify that there is a failure.
次に作用を説明する。Next, the action will be explained.
低値選択回路１６からの蒸気弁開度指令信号人は電池変
換器１３および電池変換器の動特性１３Ａに入力され、
また検出信号整形回路１９および蒸気弁開度検出回路Ｏ
動特性１７Ａからの出力信号は加算器２０を介して診断
回路２１に入力される。The steam valve opening command signal from the low value selection circuit 16 is input to the battery converter 13 and the battery converter dynamic characteristic 13A,
In addition, the detection signal shaping circuit 19 and the steam valve opening detection circuit O
The output signal from the dynamic characteristic 17A is input to the diagnostic circuit 21 via the adder 20.
この診断回路２１により８１が閉じＳＳが開い九場合に
は、検出信号整形回路１９からの信号が加算器に入力さ
れ、この信号と蒸気弁開度指令信号Ａとの差が電油変換
器１３に入力されて、蒸気り、−ビン１は通常の運転が
行なわれる− ｔ＆、ｓｌが開きＳｌが閉じた場合には
、加芦器１５ヘフィードバックされる蒸気弁開度検出回
路の動特性１７人からの信号と蒸気弁開度指令信号人と
の差が電油変換器１３に入力され、蒸気タービンｌは動
特性モデル２２に基づく制御運転が行なわれる。When 81 is closed and SS is opened by this diagnostic circuit 21, the signal from the detection signal shaping circuit 19 is input to the adder, and the difference between this signal and the steam valve opening command signal A is determined by the electro-hydraulic converter 13. When t&, sl opens and sl closes, the dynamic characteristic 17 of the steam valve opening detection circuit is fed back to the adder 15. The difference between the signal from the person and the steam valve opening command signal from the person is input to the electro-hydraulic converter 13, and the steam turbine 1 is operated under control based on the dynamic characteristic model 22.
１、。1.
一方、この動特性モデル２２１（基づく蒸気タービン１
０制御運転下で、アラーム信号を受は丸裸作者は、手動
操作により蒸気弁開度指令信号人の値を徐々に低減させ
、電池変換１）１３からの油量を減少させて蒸気弁３を
徐々に閉じ、蒸気タービンｌを緩停止させる。ところが
、この操作員による操作によりても、蒸気タービン１の
蒸気流量が変化しない場合には、蒸気弁開度検出器１７
の故障ではなく、蒸気弁３、サーボモータ７或いは電池
変換器１３の故障であると判断でき、ダンプ弁１２を開
くととによって蒸気ターピ／１を停止させる。On the other hand, this dynamic characteristic model 221 (based on steam turbine 1
Under zero control operation, the author receives an alarm signal and gradually reduces the value of the steam valve opening command signal by manual operation, and reduces the amount of oil from battery conversion 1) 13 to open the steam valve 3. It gradually closes and brings the steam turbine I to a slow stop. However, if the steam flow rate of the steam turbine 1 does not change even after this operation by the operator, the steam valve opening degree detector 17
It can be determined that there is a failure in the steam valve 3, servo motor 7, or battery converter 13 rather than a failure in the steam turret 1, and the dump valve 12 is opened and the steam turret 1 is stopped.
したがって、本実施例によれば、操作員によって、蒸気
タービ／ｌを緩停止させることができることから、蒸気
タービン１の運転の信頼性を向上させて実質の電力を供
給できるとともに１ボイラに蓄積された熱の放出を防止
して系のエネルギ効率を向上させることができる。ここ
で１０１００Ｏ級の蒸気タービンの急停止を防止できる
場合には、燃料価格に換算して１０００万円程度のエネ
ルギ放出を阻止できる。Therefore, according to this embodiment, since the steam turbine/l can be brought to a slow stop by the operator, the operational reliability of the steam turbine 1 can be improved and real power can be supplied, and the amount of power accumulated in the 1 boiler can be improved. The energy efficiency of the system can be improved by preventing the release of heat. If a sudden stop of a 10,100O class steam turbine can be prevented, energy release of approximately 10 million yen in fuel price can be prevented.
１＋、操作員によって徐々に低減される蒸気弁ＶＳｔ摺
令信号人と蒸気タービン１の蒸気流量とを比較すること
により、制御手段を構成する機器の故障を識別判断する
ことができる。1+, by comparing the steam valve VSt command signal, which is gradually reduced by the operator, with the steam flow rate of the steam turbine 1, it is possible to identify and judge a failure in the equipment constituting the control means.
以上のように１本発明に係る電子油圧式調速装置によれ
ば、蒸気タービンの運転の信頼性を向上させることがで
きるとともに、系のエネルギ効率を向上させることがで
きる。As described above, according to the electro-hydraulic speed governor according to the present invention, it is possible to improve the operational reliability of the steam turbine, and also to improve the energy efficiency of the system.
【図面の簡単な説明】
第１図は従来の電子油圧式調速装置を示す回路図、第２
図は同装置の制御手段の動特性モデルを示すプロン４図
、第３図は本発明に係る電子油圧式調速装置の一実施ガ
を示す回路図である。
１・・・蒸気タービン、３・・・蒸気弁、７・・・サー
ボモータ、１３・・・電油変換器、１７・・・蒸気弁開
度検出器、Ａ・・・蒸気弁開度指令信号、２１−、診断
回路、２２４１
第１ 困
第２（２］
第３０[Brief explanation of the drawings] Figure 1 is a circuit diagram showing a conventional electro-hydraulic speed governor;
FIG. 4 is a diagram showing a dynamic characteristic model of the control means of the device, and FIG. 3 is a circuit diagram showing an embodiment of the electro-hydraulic speed governor according to the present invention. 1... Steam turbine, 3... Steam valve, 7... Servo motor, 13... Electro-hydraulic converter, 17... Steam valve opening detector, A... Steam valve opening command Signal, 21-, Diagnostic circuit, 2241 1st trouble 2nd (2) 30th
Claims (1)
に基づき該弁を開閉可能とする複数個の機器からなる制
御手段と、咳制御手段と並列に接続される該制御手段の
動特性モデルと、前記制御手段と動特性モデルの両者の
出力側に連結されて該両出力を比較し、かつ該両出力の
一方を選択的に前記制御手段の入力側にフィードバック
させる診断回路と、を内蔵することを特徴とする電子油
圧式調速装置。1. Control means consisting of a plurality of devices that can open and close the valve based on the opening command signal of the valve that adjusts the amount of working fluid to the prime mover, and the operation of the control means connected in parallel with the cough control means. a characteristic model, and a diagnostic circuit connected to the output sides of both the control means and the dynamic characteristic model to compare the two outputs and selectively feed back one of the two outputs to the input side of the control means; An electro-hydraulic speed governor featuring a built-in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5657282A JPS58174107A (en) | 1982-04-07 | 1982-04-07 | Electron-hydraulic type speed controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5657282A JPS58174107A (en) | 1982-04-07 | 1982-04-07 | Electron-hydraulic type speed controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58174107A true JPS58174107A (en) | 1983-10-13 |
| JPH0361002B2 JPH0361002B2 (en) | 1991-09-18 |
Family
ID=13030854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5657282A Granted JPS58174107A (en) | 1982-04-07 | 1982-04-07 | Electron-hydraulic type speed controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58174107A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4997103A (en) * | 1973-01-26 | 1974-09-13 | ||
| JPS566902U (en) * | 1979-06-27 | 1981-01-21 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS566902B2 (en) * | 1973-08-16 | 1981-02-14 |
-
1982
- 1982-04-07 JP JP5657282A patent/JPS58174107A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4997103A (en) * | 1973-01-26 | 1974-09-13 | ||
| JPS566902U (en) * | 1979-06-27 | 1981-01-21 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0361002B2 (en) | 1991-09-18 |
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