JPS601305A - Switching method of steam pressure control system of turbine gland seal - Google Patents

Switching method of steam pressure control system of turbine gland seal

Info

Publication number
JPS601305A
JPS601305A JP10773383A JP10773383A JPS601305A JP S601305 A JPS601305 A JP S601305A JP 10773383 A JP10773383 A JP 10773383A JP 10773383 A JP10773383 A JP 10773383A JP S601305 A JPS601305 A JP S601305A
Authority
JP
Japan
Prior art keywords
pressure
steam pressure
steam
control system
valve
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
Application number
JP10773383A
Other languages
Japanese (ja)
Inventor
Kazuyuki Sugaya
和幸 菅谷
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP10773383A priority Critical patent/JPS601305A/en
Publication of JPS601305A publication Critical patent/JPS601305A/en
Pending legal-status Critical Current

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
    • F01D17/08—Arrangement of sensing elements responsive to condition of working-fluid, e.g. pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

PURPOSE:To prevent variation of steam pressure, in a system in which sealing of the gland part is performed by the use of a steam pressure control system with difference at the time of starting from the time of normal operation, by switching the control system while monitoring deviation of the sensed value of sealing steam pressure from the corresponding set value. CONSTITUTION:At the time of starting, a motor-driven valve 15 on the steam pressure evaporator-generated control system provided in the plant is opened, while a motor- driven valve 12 on the steam pressure control system is closed, and a pressure regulator valve 14 is opened gradually in compliance with the output signal of a program setting device 5 selected by a switcher 8. At this time, the gland sealing steam pressure is sensed by a pressure conduction device 1, and the deviation of the sensed value from its corresponding set value is determined at a deviation calculator 2 while monitoring it by a monitor 3. When the deviation has become zero, the abovementioned switcher 8 shall select a proportional integral operator 4, and the output therefrom shall serve control of the abovementioned regulator valve 14. Switching to the normal operation side is made by opening first the valve 12, and then closing the pressure regulator valve 14 while another pressure regulator valve 11 is opened gradually by the output of a program setting device 6 selected by the switcher 8.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は、所内蒸気圧力制御系と、蒸化器発生蒸気圧力
制御系との切替に於て、その切替をスムーズに行ない、
タービングランドシール蒸気圧力に変動をきたさず、か
つ切替操作を容易にするものである。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention smoothly switches between an in-house steam pressure control system and an evaporator generated steam pressure control system,
The turbine gland seal does not cause fluctuations in steam pressure and facilitates switching operations.

〔発明の背景〕[Background of the invention]

従来例を第１図により説明する。タービン他機器のグラ
ンド蒸気の外部放出による放射純汚染防止のため、清浄
蒸気によりシールを行なっている。A conventional example will be explained with reference to FIG. In order to prevent pure radiation contamination due to external release of ground steam from turbines and other equipment, sealing is performed using clean steam.

蒸化器８への給水は、蒸化器８で、加熱蒸気（原子炉で
発生してタービンに送られる蒸気の抽気蒸気）によル加
熱され、蒸気となってグランド部へ導かれシールを行な
う。沸騰水型原子炉ブラント起動時に於ては、原子炉で
発生した蒸気がクーピンに供給されないために抽気蒸気
が得られず所内ポイ２にて発生させた所内蒸気によりシ
ールを行ない、起動後、蒸化器８の発生蒸気によるシー
ルに切替える。ここで、この切替操作について説明する
。プラント起動時は、蒸化器８の発生蒸気１１１１１電
動弁６を全閉し、かつ圧力調節計５を手！トｂにし、調
節弁７を全開に操作しておく。次に所内蒸気イ１（す圧
力調節計２を手動にし、調ｎ１ｊ弁４を全開に→＋：ｌ
Ｈ作后、電動弁３を全開状態から全開にする。圧力調節
計２によシ、手動にて、圧力調節弁４５ｃ開操作し、設
定圧力に達した時、圧力調節計４を手動から自動に切替
えて制御に入れる。プラント起動後、蒸化器８からの蒸
気供給が可能になった時点で、電動弁６を全開状態から
全開操作する。圧力調節計５によシ手動にて、圧力調節
弁７を徐々に開操作する。これによシ所内蒸気側圧力調
節計は、自動制御により、圧力調節弁４ｆｆ：閉方向へ
動作させる。圧力調節弁４が、はぼ全開状態になった時
点で、圧力調段１ｊ計２紫自動から手動に切替える。同
時に、純化器発生蒸気側圧力調節計５ｆ：手動から自動
に切替え、制御に入れる。その后所内蒸気側圧力調節計
によシ、手動にて圧力調節弁４を徐々に閉動作させ全閉
后、電動弁３を全開から全閉に操作する。以上で所内蒸
気圧力制御系から、蒸化諸元生蒸気圧力制御系への切替
が完了する。以上の様に、制御系の切替えに際して、圧
力調節計の手！１Ｉ２Ｉ操作は、圧力に変動をきたさな
い様操作する必要があシ、又切替え操作自体も複雑であ
った。The water supplied to the evaporator 8 is heated in the evaporator 8 by heated steam (extraction steam of the steam generated in the reactor and sent to the turbine), turned into steam, and guided to the gland section to seal the seal. Let's do it. When starting up a boiling water reactor blunt, the steam generated in the reactor is not supplied to the coupin, so bleed steam cannot be obtained. Switch to sealing using the steam generated by the evaporator 8. Here, this switching operation will be explained. When starting up the plant, fully close the generated steam 11111 of the evaporator 8 and the electric valve 6, and turn the pressure regulator 5 by hand! (b) and operate the control valve 7 fully open. Next, set the station steam pressure regulator 2 to manual, and fully open the control valve 4 →+:l
After H operation, the electric valve 3 is fully opened from the fully open state. The pressure regulator 2 is manually operated to open the pressure regulating valve 45c, and when the set pressure is reached, the pressure regulator 4 is switched from manual to automatic to enter control. After starting the plant, when steam supply from the evaporator 8 becomes possible, the electric valve 6 is operated from the fully open state to the fully open state. The pressure regulating valve 7 is gradually opened manually using the pressure regulator 5. As a result, the in-house steam side pressure regulator is automatically controlled to operate the pressure regulating valve 4ff in the closing direction. When the pressure regulating valve 4 is almost fully open, the pressure regulating stage 1j is switched from automatic to manual. At the same time, the purifier generated steam side pressure controller 5f is switched from manual to automatic and put into control. Using the downstream steam side pressure regulator, the pressure regulating valve 4 is manually closed gradually until it is fully closed, and then the electric valve 3 is operated from fully open to fully closed. This completes the switching from the in-house steam pressure control system to the evaporation specification raw steam pressure control system. As mentioned above, when switching the control system, the pressure regulator's hand! The 1I2I operation had to be performed so as not to cause fluctuations in pressure, and the switching operation itself was complicated.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、画制御系の切替操作に於て、タービン
グランドシール蒸気圧力に変動をきたさない様にすると
同時に、操作の簡素化を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to prevent fluctuations in turbine gland seal steam pressure during the switching operation of the image control system, and at the same time to simplify the operation.

〔発明の概要〕[Summary of the invention]

本発明においては、両制御系の起動、及び切替操作を、
各調節弁の入口（ＩＱ電動弁の開、閉動作の指令によシ
行なう。起動時、所内蒸気１ｊＱ電動プｐを開操作する
と、圧力調節計はこの信号を受りて、プログラム設定器
により、圧力調節弁を除々に開け、設定値に達した時点
で、プログラム設定器による制御から、比例積分演算に
よる制御ｌｌに切替える。蒸化器発生蒸気側への切替え
に際しては、蒸化器発生蒸気側電動弁を開操作すると、
圧力調節計はこの信号を受けて、プログラム設定器によ
り、圧力調節弁を徐々に開ける。これにより既に比例積
分演算制御を行なっている所内蒸気側圧力調節弁は、徐
々に閉方向へ動作する。比Ｉｐｔ器により、両制御系の
出力が、はぼ同一値になった時点で、プログラム設定器
の出力をホールドさせる。ここで、所内蒸気側電動弁を
閉操作すると、所内蒸気側圧力調節計は、比例積分演算
による制御から、プログラム設定器による制御に切替わ
）、圧力調節弁を徐々に閉し、全開になった時点で、電
動弁は閉！ＩＪｈ作を商始する。一方、蒸化器発生蒸気
側調節計は、出力がホールドされたプログラム設定器に
よる制御から、比例積分演算による制御に切替わり、目
勃制句１に入る。蒸化器発生蒸気側から、Ｄｒ内熱蒸気
１ｉ’ｉｉｌの切替えも、同一パターンとなる。In the present invention, the activation and switching operations of both control systems are
The inlet of each control valve (IQ is controlled by the command to open and close the electric valve. At startup, when the in-house steam 1jQ electric valve is opened, the pressure controller receives this signal and uses the program setting device to , gradually open the pressure control valve, and when the set value is reached, switch from control by the program setting device to control by proportional integral calculation.When switching to the evaporator-generated steam side, the evaporator-generated steam When the side electric valve is opened,
The pressure regulator receives this signal and uses a program setting device to gradually open the pressure regulating valve. As a result, the station steam side pressure regulating valve, which has already been subjected to proportional-integral calculation control, gradually operates in the closing direction. The output of the program setting device is held by the ratio Ipt device when the outputs of both control systems become approximately the same value. When the electric valve on the station steam side is closed, the pressure regulator on the station steam side switches from control based on proportional-integral calculations to control using a program setting device), gradually closing the pressure control valve until it is fully open. At that point, the electric valve closes! Started making IJh products. On the other hand, the evaporator-generated steam side controller switches from control by the program setting device whose output is held to control by proportional integral calculation, and enters the control mode 1. Switching of the Dr internal hot steam 1i'iil from the evaporator generated steam side also follows the same pattern.

これによ）、制御系切替操作を、タービングランドシー
ルい・′Ｚ気圧力に変ＢＵｈ　ｋきたすことなく、かつ
、容易に行なうことができる。As a result, the control system switching operation can be easily performed without causing a change in the turbine gland seal pressure.

〔灸明の災施例〕[Moxibustion disaster example]

以下、Ｉｊｌｉ　Ｑ水型原子炉プラントに適用した本発
明の実７＋ｌＩｉせりを第２図及び１１１３図により説
明する。Hereinafter, the actual 7+lIi series of the present invention applied to the Ijli Q water reactor plant will be explained with reference to FIGS. 2 and 1113.

タービングランドシール蒸気は、所内蒸気（所内ホイシ
で発生したＡに気）、及び蒸化器発生蒸気（原子炉で発
生じた蒸気の抽気蒸気による加熱にてジし生じた蒸気）
の２系統より供給される。まず蒸化器づＳ生蒸気側圧力
制御について説明する。タービングランドシール蒸気圧
力は、圧力伝送器ｌによシ供出され、圧力調節計の偏差
演算器２へ入力され、設定値との偏差演算を行ない、偏
差信号は、比例積分演算器４及び信号モニタ３へ人力さ
れる。信号モニタ３の機能については、後述する。Turbine gland seal steam consists of in-house steam (A gas generated in the in-house boiler) and evaporator-generated steam (steam generated by heating the steam generated in the reactor with bleed steam).
It is supplied from two lines. First, the evaporator S live steam side pressure control will be explained. The turbine gland seal steam pressure is sent to the pressure transmitter 1 and input to the deviation calculator 2 of the pressure regulator, where the deviation from the set value is calculated, and the deviation signal is sent to the proportional-integral calculator 4 and the signal monitor. Manually powered to 3. The functions of the signal monitor 3 will be described later.

比例、積分演算器４の演算出力は、電空変換器ｌＯに入
力され、空気信号に変換されゐ。このを気信号によシ、
圧力調節弁ｉｉを操作し、タービングランドシール蒸気
圧力ｆ：　−’Ｎ　１１［ｔに側脚する。The calculation output of the proportional/integral calculator 4 is input to the electro-pneumatic converter 1O, and is converted into an air signal. Please use this as a signal,
Operate the pressure control valve ii to set the turbine gland seal steam pressure f: -'N 11[t.

切替器８は、比例・積分演Ｘ器４、プログラム設定器５
、プログ２ム設定器６、及びプログラム設定器７の出力
の何れかを選択するもので、その機能については後述す
る。比較器９は、所内謔気４１！１１圧力調節計の出力
との比較演算ケするものである。The switch 8 includes a proportional/integral calculator 4 and a program setter 5.
, the program setting device 6, and the program setting device 7, and its function will be described later. The comparator 9 performs a comparison operation with the output of the internal pressure regulator 41!11.

次に、所内蒸気側の起動について説明する。尚、圧力調
節針の性機能については、ｎｌＪ述蒸化器発生蒸気側と
同じであるので、図面上、これ全引用して説明する。Next, startup on the station steam side will be explained. The function of the pressure regulating needle is the same as that of the steam generated by the evaporator mentioned above, so it will be explained in its entirety with reference to the drawings.

電動弁１５を開操作すると、電動弁１２が全開の条件下
で、切替器８は、プログラム設定器５を選択する。プロ
グラム設定器は、徐々に出力を増加する。これによシ、
調節弁１４は徐々に開さ、所内蒸気が供給され、タービ
ングランドシール蒸気圧力は上昇する。この圧力は、圧
力伝送器ｌによ）検出され、偏差演算器２に入力され、
設定値との偏差演算を行なう。この偏差信号を信号モニ
タ３によシ監視し、偏光が零、すなわち、圧力設定値に
達したとさ、切替器８は、プログラム設定器５の出力か
ら、比例積分演算４の出力に切替える。以后、比例、積
分演算による制御によシ圧力ー足制御を行なう。次に、
蒸化器発生蒸気側への切替えについて説明する。蒸化器
発生蒸気側電動弁１２を、閉操作すると、所内蒸気側電
動弁１５が−ｊの条件下で、切替器８は、プログラム設
定器６を選択する。プログラム設定器６は、徐々に出力
全増加する。これによシ、圧力調節弁１１は徐々に開さ
、蒸化器発生蒸気側の蒸気が供給される。When the electric valve 15 is opened, the switch 8 selects the program setting device 5 under the condition that the electric valve 12 is fully open. The program setter gradually increases the output. For this,
The control valve 14 is gradually opened, in-house steam is supplied, and the turbine gland seal steam pressure increases. This pressure is detected by the pressure transmitter 1) and input to the deviation calculator 2,
Calculate the deviation from the set value. This deviation signal is monitored by the signal monitor 3, and when the polarization reaches zero, that is, the pressure setting value, the switch 8 switches from the output of the program setting device 5 to the output of the proportional-integral calculation 4. After that, pressure-foot control is performed by proportional and integral calculations. next,
Switching to the evaporator-generated steam side will be explained. When the evaporator generated steam side electric valve 12 is closed, the switch 8 selects the program setting device 6 under the condition that the station steam side electric valve 15 is -j. The program setter 6 gradually increases the total output. As a result, the pressure regulating valve 11 is gradually opened, and steam from the evaporator-generated steam side is supplied.

圧力調節弁１１の開動作によシ、蒸気過剰となシ、比例
・積分演算による制御に入っている所内蒸気側圧力調節
計は、その出力を減少する方向に動作し、圧力調節弁１
４を閉動作させ、圧力ー足制御を行なう。蒸化器発生蒸
気側圧力と、所内蒸気側出力を、比較器９によシ監視し
、両制御茅の出力が、はぼ同一値になう７ｊとき、プロ
グラム設定器６の出力上昇を停止し、その時の出力にボ
ールドする。Due to the opening operation of the pressure regulating valve 11, if there is excess steam, the station steam side pressure regulator, which is controlled by proportional/integral calculations, operates in the direction of decreasing its output, and the pressure regulating valve 1
4 is closed and pressure-foot control is performed. The evaporator generated steam side pressure and the station steam side output are monitored by the comparator 9, and when the outputs of both control shafts become approximately the same value 7j, the output increase of the program setting device 6 is stopped. and bold the output at that time.

この時点で、蒸化器発生蒸気側Ｘ！ｉｊ弁は、一定開度
に保持され、所内蒸気側にて比例・積分演算による制御
によシ、圧力一定制御を行なう。所内蒸気側からの蒸気
供給を停止し、蒸化ｔ―発ｄミ蒸気側からの蒸気供給に
切替える場廿についで説明する。所内蒸気側電動弁’ｔ
　＋４４操作すると１．すｒ内然気仙圧力調節計は、比
例積分演算器４による制御から、プログラム設定器７に
よる制御に、切七器８によシ切替える。プログラム酸に
器７の出力は、切替えられた時点の比例・積分前１．の
出力凪から、徐々に減少し、圧力調節弁１４γ全閑にす
る。圧力調節弁１４が全■】になった後　’ｉｉｔ　ｉ
・ｒｔ４Ｆは、閉動作を開始し、全閉となる。一方蒸化
器発生蒸気側ＷＱ節計は、所内蒸気側電動弁の閉操作に
より、プログラム設定器６の出力による制御（前述のホ
ールドされた一定出力）から、比例・積分Ｖｇ、Ｔ４’
ａ’ｔ＋　４による制御に、切替器８によシ切替え、圧
力一定制御を行なう。次に蒸気供給を停止する場合につ
いて説明する。各調節弁の入口電動弁の閉操作によシ、
各Ａ節計は、切替器８によシ、グログラム設定器７が選
択され、出力を徐々に減少し、各調節弁を徐々に閉操作
し、全開にする。調節弁が全開になった時点から、各゛
「に動弁は、閉動作を開始し、全開となり、完全に蒸気
供給を停止状態となる。第３図によシ制御過程を説明す
る。Ｑｉ円内蒸気側起動時プログラム設定器によシ、徐
々に調節弁を開き、圧力が設定値に達した時点（図中Ａ
点）で比１り０・積分演算による、圧力ー足制御となる
。At this point, the evaporator generated steam side is X! The ij valve is maintained at a constant opening degree, and the pressure is controlled to be constant by proportional and integral calculations on the in-house steam side. Next, a description will be given of the situation in which the steam supply from the in-house steam side is stopped and the steam supply is switched to the steam supply from the evaporation steam side. In-house steam side electric valve't
+44 operation causes 1. The internal Kesen pressure regulator is switched from control by the proportional-integral calculator 4 to control by the program setting device 7 and by the switch 8. The output of the program converter 7 is 1. before proportional/integral at the time of switching. The output gradually decreases and the pressure control valve 14γ becomes completely idle. After the pressure control valve 14 reaches full ■] 'iit i
・rt4F starts the closing operation and becomes fully closed. On the other hand, the evaporator generated steam side WQ moderator is controlled by the output of the program setting device 6 (the above-mentioned held constant output) by closing the station steam side electric valve, and the proportional/integral Vg, T4'
A't+ 4 is used to control the pressure, and the switch 8 is used to perform constant pressure control. Next, a case will be explained in which the steam supply is stopped. By closing the inlet electric valve of each control valve,
For each A meter, the switch 8 selects the grogram setting device 7 to gradually reduce the output, gradually close each control valve, and then fully open it. From the point when the control valve is fully open, each valve starts its closing operation, becomes fully open, and completely stops steam supply.The control process will be explained with reference to Fig. 3.Qi When starting the internal steam side, the program setting device gradually opens the control valve until the pressure reaches the set value (A in the figure).
At point), pressure-foot control is performed using the ratio 1/0/integral calculation.

次に蒸化器発生蒸気側を起動すると、プログラム設定器
により、徐々に調節弁を開き、所内蒸気側調節弁とほぼ
同−一度となったとき、その位置にホールドされる。（
図中Ｂ点ン 次に、所内蒸気側を停止操作すると、所内蒸気側は、比
例・１責分演算による制御から、プログラム設定器によ
る制御に切替シ、徐々に調節弁を閉操作し、同時に、蒸
化器発生蒸気側は、グログラム設定器による制御から、
比例・積分演算による制御に切替器、圧力ー足利１ｆｉ
Ｉｌに入る。（［・ｌ中Ｃ点）両制御系は、干渉しない
様にする尚、同時に比レリ・積分演算による制御に入ら
ない様にする。又各プログラム設定器の出力χ化率り１
、プロセスの時定数、調節弁の応答性Ｖを考慮して決足
する。Next, when the evaporator-generated steam side is started, the program setting device gradually opens the control valve, and when it reaches almost the same level as the in-house steam side control valve, it is held at that position. (
Point B in the diagram Next, when the in-house steam side is stopped, the in-house steam side switches from control by proportional/one-responsibility calculation to control by the program setting device, gradually closes the control valve, and at the same time , the evaporator generated steam side is controlled by the grogram setting device,
Switch, pressure-Ashikaga 1fi for control by proportional/integral calculations
Enter Il. (Point C in [•l) Both control systems should not interfere, and should not enter into control based on ratio/integral calculations at the same time. Also, the output χ rate of each program setting device 1
, the time constant of the process, and the responsiveness V of the control valve.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、起動時及び制御糸切・ｋ；１時に於て
、タービングランドシール蒸気圧力に、変ン男をきたさ
ない様に、又：ｉｓ＋’ミ作のＩｆ！］　Ｊ＜化ｆｉ：
＝することか出来る。According to the present invention, during start-up and control thread cutting, k;1 o'clock, the turbine gland seal steam pressure is prevented from becoming unstable, and if:is+'mi-made If! ] J<chemical fi:
= I can do something.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の制御方式の系統図、第２１’ｉ＋は本発
明の一実施例の制御方式の系Ｍ１１図、嶋３１さ１は本
発明による制御方式の制御過程貌す１図である。 ｌ・・・圧力伝送器、２・・・偏差演詩酩、３・・・信
号〔ニタ、４・・・比例・積分演算器、５・・・プログ
ラム設定器（ＰＲＧ−１）、６・・・プログラム設定器
＋　１：’１′Ｌ（ｊ−２）、？・・・プログラム設定
器（ＰＩもＧ−３）、８・・・切替器、９・・・比較器
、１０・・・ｉｕ、空表換器、１１・・・圧力調節弁（
ＰＣＶ−Ｂ）％　１２・・・電動弁（ＭＶ−Ｂ）、１３
・・パ屯空変挨器、１４・・・圧力調節弁（ＰＣＶ　Ａ
　）　、ｌ　ｓ・・・ｆｔ勤弁（ＭＹ−Ａ）。 第　”　７”ｌ？ｆ：１ｙｆ７９． １しン 第　２　口 ドレン 茅３０ −　γ０フ゛ラムＲ≦Ｌ＋＝よる惨り＃１□詫例虐分庫
′４１：よる？１夢ＰFIG. 1 is a system diagram of a conventional control method, No. 21'i+ is a system diagram M11 of a control method according to an embodiment of the present invention, and Shima 31-S1 is a diagram showing the control process of the control method according to the present invention. . 1...Pressure transmitter, 2...Difference performance, 3...Signal, 4...Proportional/integral calculator, 5...Program setting device (PRG-1), 6... ...Program setter + 1:'1'L(j-2),? ... Program setting device (PI is also G-3), 8 ... Switching device, 9 ... Comparator, 10 ... iu, empty display device, 11 ... Pressure control valve (
PCV-B)% 12...Electric valve (MV-B), 13
...Patun Air Converter, 14...Pressure control valve (PCV A
) , l s...ft service (MY-A). No. “7”l? f:1yf79. 1st line 2nd mouth drain 30 - γ0 film R ≦ L + = misery #1 □ Ekiretsu Bunko'41: Yoru? 1 dream P

Claims (1)

【特許請求の範囲】[Claims] １、　起動時の所内蒸気圧力制御系と、通常運転時の蒸
化器発生蒸気圧力制御系よシ成るタービングランドシー
ル蒸気圧力ｆｉ７１Ｊ御系に於て、圧力設定値との１，
１１差ヲ挾出する手段、予め定めた出力を出す手段、及
び両ｉＨＵ御系の出力を比較する手段を設け、両制御系
の切替時に於て、タービングランドシール蒸気圧力にｆ
動をきたさない様にすることを特徴とするタービングラ
ンドシール蒸気圧力制御系切替方式。1. In the turbine gland seal steam pressure fi71J control system, which consists of the station steam pressure control system at startup and the evaporator generated steam pressure control system during normal operation, the pressure setting value
11 A means for calculating the difference, a means for outputting a predetermined output, and a means for comparing the outputs of both iHU control systems are provided.
A turbine gland seal steam pressure control system switching system that is characterized by preventing movement.
JP10773383A 1983-06-17 1983-06-17 Switching method of steam pressure control system of turbine gland seal Pending JPS601305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10773383A JPS601305A (en) 1983-06-17 1983-06-17 Switching method of steam pressure control system of turbine gland seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10773383A JPS601305A (en) 1983-06-17 1983-06-17 Switching method of steam pressure control system of turbine gland seal

Publications (1)

Publication Number Publication Date
JPS601305A true JPS601305A (en) 1985-01-07

Family

ID=14466566

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10773383A Pending JPS601305A (en) 1983-06-17 1983-06-17 Switching method of steam pressure control system of turbine gland seal

Country Status (1)

Country Link
JP (1) JPS601305A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62199902A (en) * 1986-02-28 1987-09-03 Toshiba Corp Pressure regulator for steam turbine gland steam sealing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62199902A (en) * 1986-02-28 1987-09-03 Toshiba Corp Pressure regulator for steam turbine gland steam sealing system

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