JPS5953470B2 - Condenser wastewater temperature control device - Google Patents
Condenser wastewater temperature control deviceInfo
- Publication number
- JPS5953470B2 JPS5953470B2 JP8366878A JP8366878A JPS5953470B2 JP S5953470 B2 JPS5953470 B2 JP S5953470B2 JP 8366878 A JP8366878 A JP 8366878A JP 8366878 A JP8366878 A JP 8366878A JP S5953470 B2 JPS5953470 B2 JP S5953470B2
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- Prior art keywords
- temperature
- condenser
- cooling water
- bypass valve
- output
- 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.)
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Description
【発明の詳細な説明】
本発明は復水器の排水温度制御装置に関するもので、主
として火力発電あるいは原子力発電等のプラント用復水
器の温排水の温度制御に用いるものを対象とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a condenser wastewater temperature control device, and is primarily intended for use in temperature control of heated wastewater from condensers for plants such as thermal power generation or nuclear power generation.
一般の火力あるいは原子力の発電プラントには蒸気ター
ビンで膨張し、仕事をした蒸気を凝縮させて復水する復
水設備が復水した水をボイラへ給水する給水設備ととも
に不可欠である。In general thermal or nuclear power plants, condensing equipment that condenses and condenses the steam that has been expanded by a steam turbine and has done work is indispensable, along with water supply equipment that supplies the condensed water to the boiler.
この復水設備は蒸気タービンの排気圧力を下げることと
、凝縮した復水を回収してボイラへの給水とすることを
主目的とするが、高い真空をつくって排圧を低めること
により蒸気タービン中の熱落差を大きくしタービンの出
力及び効率を増進する役割も果す。The main purpose of this condensing equipment is to lower the exhaust pressure of the steam turbine and to recover the condensed water to supply water to the boiler. It also plays a role in increasing the heat drop inside the turbine and increasing the output and efficiency of the turbine.
このように復水装置はタービン排気と冷却水との熱交換
とを行うものであるが、その冷却水として一般に海水が
使用され装置内での熱交換を終えた後海に排水される。In this way, the condensing device exchanges heat between the turbine exhaust and the cooling water, and seawater is generally used as the cooling water, and after completing the heat exchange within the device, it is drained into the sea.
そして熱交換を終えた段階での排水は付近の海水温度よ
りも高いので、そのまま海に排出すると種々の弊害が生
じる。The temperature of the waste water after heat exchange is higher than that of the nearby seawater, so if it is discharged directly into the sea, various problems will occur.
そのため冷却水の温度と排水の温度差すなわち取入口と
出口との水温の差を少なく、かつ一定になるように排水
の温度を制御することが必要である。Therefore, it is necessary to control the temperature of the waste water so that the difference in temperature between the cooling water and the waste water, that is, the difference in water temperature between the intake and the outlet, is small and constant.
第１図は排水温度制御の対象となる一般的な復水装置の
冷却水系統図である。FIG. 1 is a cooling water system diagram of a general condensing device that is subject to wastewater temperature control.
冷却水となる取入口１の海水は循環水ポンプ２Ａ及び２
Ｂにより汲み上げられ、弁開度調節電動機４Ａ及び４Ｂ
により開度が調節される復水器人口弁３Ａ及び３Ｂを通
じて復水器水室５Ａ及び５Ｂに入り、復水器６で図示し
ない冷却管群を実線の矢印に示す方向に進む間に蒸気タ
ービン７の排気との間で熱交換をする。Seawater at intake port 1, which becomes cooling water, is circulated through water pumps 2A and 2.
The pump is pumped up by valve opening adjustment motors 4A and 4B.
The steam turbine enters the condenser water chambers 5A and 5B through the condenser artificial valves 3A and 3B, the opening of which is adjusted by the It exchanges heat with the exhaust gas of No.7.
熱交換により温たまった海水はその後復水器出目弁８Ａ
及び８Ｂを通じて排水口１０に排水される。The seawater warmed by heat exchange is then passed through the condenser outlet valve 8A.
The water is drained to the drain port 10 through 8B and 8B.
なお、前記復水器出口弁８Ａ及び８Ｂは０Ｎ１０ＦＦ弁
で電磁操作器９Ａ及び９Ｂにより全開あるいは全閉とな
る。The condenser outlet valves 8A and 8B are 0N10FF valves and are fully opened or closed by electromagnetic actuators 9A and 9B.
一方、排水口１０付近の温度を制御するために復水器バ
イパス弁１１Ａ及びＩＩＢが設けられ、循環水ポンプ２
Ａ及び２Ｂからの冷却水を復水器バイパス弁開度調節電
動機１２Ａ及び１２Ｂによる開度調節された流量分バイ
パスし、復水器６からの温たかい排水と混合させること
により排水温度を制御できるようにされている。On the other hand, condenser bypass valves 11A and IIB are provided to control the temperature near the drain port 10, and the circulating water pump 2
The temperature of the waste water can be controlled by bypassing the cooling water from A and 2B by the flow rate adjusted by the condenser bypass valve opening adjustment motors 12A and 12B and mixing it with the warm waste water from the condenser 6. It's like that.
そして、温度制御に必要な冷却水入口温度の検出は取水
口附近に設けた入口温度検出器１３によリ、排水の出口
温度の検出は排水口附近に設けた出口温度検出器１４よ
り行われる。The cooling water inlet temperature required for temperature control is detected by an inlet temperature detector 13 installed near the water intake, and the outlet temperature of waste water is detected by an outlet temperature detector 14 installed near the drain. .
第２図は従来における排水温度制御装置を示すブロック
図である。FIG. 2 is a block diagram showing a conventional drainage temperature control device.
同図の枠１００内が制御装置にあたる。The area within the frame 100 in the figure corresponds to the control device.
この装置による温度制御は、入口温度検出器１３で検出
された入口温度Ｔ１と出口温度検出器１４で検出された
出口温度Ｔ２との差ΔＴａを加算器１０１により求め、
それを次の加算器１０２に入力するとともに温度差設定
器１０３の設定値ΔＴｓも加算器１０２に入力すること
により設定値（設定温度差）ΔＴＳと実際値（実際の温
度差）ΔＴａとの差εＴを求め、そのεＴをＡ系列調節
器１０４及びＢ系列調節器１０５に入力し、εＴが零と
なるように復水器バイパス弁開度調節電動機１２Ａ及び
１２Ｂを調節し、復水器バイパス弁１１Ａ及び１１Ｂを
流れる冷却水の量を調節するという動作により行われる
。Temperature control by this device involves using an adder 101 to calculate the difference ΔTa between the inlet temperature T1 detected by the inlet temperature detector 13 and the outlet temperature T2 detected by the outlet temperature detector 14.
By inputting it to the next adder 102 and also inputting the set value ΔTs of the temperature difference setting device 103 to the adder 102, the difference between the set value (set temperature difference) ΔTS and the actual value (actual temperature difference) ΔTa is Calculate εT, input the εT to the A-series regulator 104 and the B-series regulator 105, adjust the condenser bypass valve opening adjustment motors 12A and 12B so that εT becomes zero, and adjust the condenser bypass valve opening. This is done by adjusting the amount of cooling water flowing through 11A and 11B.
そして、一般に排水口付近の数点で測定した温度の平均
値をもって排水の出口温度とされている。Generally, the average value of temperatures measured at several points near the drain outlet is taken as the outlet temperature of the waste water.
ところで、冷却水と温排水が混合した排水が排出口から
海水に排出され、その排出口付近の海水と混合した場合
、海水の熱伝導度が低いことから排水と海水との混合と
それに基づく海水の温度変化との間に時間的遅れが生じ
る。By the way, when wastewater, which is a mixture of cooling water and warm wastewater, is discharged into seawater from an outlet and mixed with seawater near the outlet, the thermal conductivity of seawater is low, so the mixture of wastewater and seawater and the resulting seawater There is a time delay between the temperature change and the temperature change.
また、復水器及びバイパス弁から排水口までの水路が極
めて長いので復水器及びバイパス流量を調節してもそれ
に基づく温度変化が排水口において生じるまで長い時間
がかかり、かつその温度変化の過程もむだ時間等の特性
があるため極めて複雑である。In addition, since the water channel from the condenser and bypass valve to the drain outlet is extremely long, even if the condenser and bypass flow rates are adjusted, it takes a long time for the temperature change to occur at the drain outlet based on the flow rate, and the process of the temperature change takes a long time. It is extremely complicated due to characteristics such as dead time.
したがって、従来一般の温度差を求めそれを調節器の制
御信号とするという制御方式では制御の即応性、精度が
不充分であり、例えば調節器への制御信号の変化後に復
水器の出口温度が変化したような場合それに相応する温
度の排水を供給するまでに極めて時間がかかる等安定な
制御が困難となる。Therefore, the conventional control method of finding the temperature difference and using it as a control signal for the regulator is insufficient in control responsiveness and accuracy. For example, after the control signal to the regulator changes, the condenser outlet temperature If the temperature changes, stable control becomes difficult, as it takes a very long time to supply wastewater at a temperature corresponding to the change.
本発明はかかる問題を解決すべくなされたもので、制御
の連応性を高め制御の精度の向上を図ることを目的とす
るものて゛ある。The present invention has been made to solve this problem, and its purpose is to improve the coordination of control and improve the accuracy of control.
上記目的を達成するための本発明の基本的構成は、熱交
換を終えた排水に混合する冷却水の量を調節することに
より復水器の排水温度を制御する制御装置において、冷
却水の取入口温度検出信号、冷却水の流量検出信号及び
発電機の出力検出信号を少なくとも入力し、これにより
熱交換を終えた排水に混合すべき冷却水の量を予測する
第１の回路と、実際の冷却水の取入口温度検出信号と排
水温度検出信号とを入力し排水に混合すべき冷却水の量
の補正信号を発生する第２の回路と、第１の回路の出力
と第２の回路の出力とを加算する第３の回路とを少なく
とも具備し、第３の出力によって排水に混合する冷却水
の供給量を制御することを特徴とする。The basic structure of the present invention for achieving the above object is to provide a control device for controlling the temperature of the water discharged from the condenser by adjusting the amount of cooling water mixed with the wastewater that has undergone heat exchange. A first circuit inputs at least an inlet temperature detection signal, a cooling water flow rate detection signal, and a generator output detection signal, and predicts the amount of cooling water to be mixed with wastewater after heat exchange. a second circuit which inputs the cooling water intake temperature detection signal and the drainage temperature detection signal and generates a correction signal for the amount of cooling water to be mixed with the drainage water; The present invention is characterized in that it includes at least a third circuit that adds the output, and the supply amount of cooling water mixed with the waste water is controlled by the third output.
以下本発明を実施例により説明する。The present invention will be explained below with reference to Examples.
第３図は本発明の一実施例に係る排水温度制御装置を示
すブロック図である。FIG. 3 is a block diagram showing a wastewater temperature control device according to an embodiment of the present invention.
同図において、枠１００内が制御回路である。In the figure, the area within a frame 100 is a control circuit.
１０８は予測信号作成器で、電力検出器１６によって検
出した発電機出力Ｇ１（蒸気流量に比例する）、流量検
出器１７によって検出した復水器出力総流量Ｑ１、入口
温度検出器１３によって検出した入口温度Ｔ１及び温度
差設定値ΔＴｓを入力し、取水口温度と排水口温度との
差が温度差設定値ΔＴｓとなるように流量調節するため
の復水バイパス弁の開度値Ｂｖ２を算出し、これを加算
器１０７に出力するものである。Reference numeral 108 is a predictive signal generator, which detects the generator output G1 (proportional to the steam flow rate) detected by the power detector 16, the condenser output total flow rate Q1 detected by the flow rate detector 17, and the inlet temperature detector 13. Input the inlet temperature T1 and the temperature difference set value ΔTs, and calculate the opening value Bv2 of the condensate bypass valve to adjust the flow rate so that the difference between the intake temperature and the outlet temperature becomes the temperature difference set value ΔTs. , which is output to the adder 107.
１０１は入口温度検出器１３で検出した入口温度Ｔ１と
出口温度検出器１４で検出した出口温度Ｔ２とを入力し
その温度差ΔＴａを出力する加算器、１０２は温度差Δ
Ｔａと温度差設定値ΔＴｓとを入力し、その差εＴを出
力する加算器、１０６は実際の温度差ΔＴａと温度差設
定値ΔＴｓとの間の温度差εＴを入力し、復水器バイパ
ス弁開度補正値ＢＶ１を出力する補正信号作成器で、不
感帯を有し、差εＴがこの不感帯を越脱したときに、復
水器バイパス弁流量が変化して排水口温度が変化するま
での遅れ時間を考慮したバイパス弁開度補正値ＢＶ１を
出力する。101 is an adder that inputs the inlet temperature T1 detected by the inlet temperature detector 13 and the outlet temperature T2 detected by the outlet temperature detector 14, and outputs the temperature difference ΔTa; 102 is the temperature difference ΔTa;
An adder 106 receives the temperature difference εT between the actual temperature difference ΔTa and the temperature difference set value ΔTs, and inputs the temperature difference ΔTs and outputs the difference εT. This is a correction signal generator that outputs the opening correction value BV1, and has a dead band.When the difference εT exceeds this dead band, there is a delay until the condenser bypass valve flow rate changes and the drain outlet temperature changes. A bypass valve opening correction value BV1 that takes time into consideration is output.
１０７は予測信号作成器１０８の出力である復水器バイ
パス弁開度値Ｂｖ２と補正信号作成器１０６の出力であ
る復水器バイパス弁開度補正値ＢＶ１とを入力し、その
差を求め復水器バイパス弁開度指令値Ｂ■３を加算器１
０９及び１１０に出力する加算器である。107 inputs the condenser bypass valve opening value Bv2, which is the output of the prediction signal generator 108, and the condenser bypass valve opening correction value BV1, which is the output of the correction signal generator 106, and calculates the difference between them. Water device bypass valve opening command value B■3 is added to adder 1
This is an adder that outputs to 09 and 110.
１０９はバイパス弁開度指令値ＢＶ３と開度検出器Ａ、
１５Ａで検出したバイパス弁開度ＢＶａ１とを入力し、
両者の差ＢＶε１ を出力する加算器、１１０はバイパ
ス弁開度指令値Ｂ■３と開度検出器Ｂ、１５Ｂで検出し
たバイパス弁開度ＢＶａ２とを入力し、両者の差ＢＶε
２を出力する加算器、１０４はＢＶε１を入力し、その
入力のＢＶε１が零になるようにバイパス弁開度調整用
電動機１２Ａを駆動する信号を発生する調節器Ａで、Ｂ
Ｖε１が零になるまで駆動信号を発生し続ける。109 is a bypass valve opening command value BV3 and an opening detector A;
Input the bypass valve opening degree BVa1 detected at 15A,
An adder 110 that outputs the difference BVε1 between the two inputs the bypass valve opening command value B■3 and the bypass valve opening BVa2 detected by the opening detectors B and 15B, and outputs the difference BVε1 between the two.
The adder 104 outputs BVε1, and the regulator A generates a signal to drive the electric motor 12A for adjusting the bypass valve opening so that the input BVε1 becomes zero.
The drive signal continues to be generated until Vε1 becomes zero.
１０５はＢＶε２を入力し、その入力のＢＶε２が零に
なるようにバイパス弁開度調整用電動機１２Ｂを駆動す
る信号を発生する調節器Ｂで、ＢＶε２が零になるまで
駆動信号を発生し続ける。Reference numeral 105 denotes a regulator B which inputs BVε2 and generates a signal to drive the bypass valve opening adjustment electric motor 12B so that the input BVε2 becomes zero, and continues to generate the drive signal until BVε2 becomes zero.
１２Ａは調節器１０４の出力である駆動信号により復水
器バイパス弁１１Ａを調節するバイパス弁開度調整用電
動機で、これによってバイパス弁１１Ａを流れる冷却水
量が制御される。12A is a bypass valve opening adjustment electric motor that adjusts the condenser bypass valve 11A based on a drive signal that is the output of the regulator 104, thereby controlling the amount of cooling water flowing through the bypass valve 11A.
１２Ｂは調節器１０５の出力である駆動信号により復水
器バイパス弁１１Ｂを調節するバイパス弁開度調整用電
動機で、これによってバイパス弁１１Ｂを流れる冷却水
量が制御される。Reference numeral 12B denotes a bypass valve opening adjustment electric motor that adjusts the condenser bypass valve 11B based on a drive signal that is the output of the regulator 105, thereby controlling the amount of cooling water flowing through the bypass valve 11B.
ところで第１図に示すように復水器６に流れる冷却水の
量は復水器人口弁３Ａ及び３Ｂの弁開度を復水器人口弁
開度調節電動機４Ａ及び４Ｂを操作することにより制御
されているが、復水器人口弁の開度制御には蒸気タービ
ン排気と冷却水の熱交換によって復水を得るためと蒸気
タービンの効率を上げるための復水器最適真空度の制御
を行うために別の装置が設けられており、排水温度制御
装置とは無関係に行われることが多い。By the way, as shown in FIG. 1, the amount of cooling water flowing into the condenser 6 is controlled by operating the valve openings of the condenser valves 3A and 3B by operating the condenser valve opening adjustment motors 4A and 4B. However, the opening degree of the condenser valve is controlled to obtain condensate through heat exchange between the steam turbine exhaust and cooling water, and to control the optimum vacuum degree of the condenser to increase the efficiency of the steam turbine. Separate equipment is provided for this purpose and is often performed independently of the waste water temperature control equipment.
しかし、蒸気タービンの排気量が変化すれば復水器出口
弁から排出される排水の温度も変化すること明らかであ
るが、冷却水温度、復水器の冷却面積、冷却水量、蒸気
温度及び蒸気流量等から熱交換によって生じる排水温度
の変化量を求めることができる。However, it is clear that if the displacement of the steam turbine changes, the temperature of the waste water discharged from the condenser outlet valve will also change, but the temperature of the cooling water, the cooling area of the condenser, the amount of cooling water, the steam temperature, and the The amount of change in waste water temperature caused by heat exchange can be determined from the flow rate, etc.
そして、排水温度と入口・出口温度差設定と排水流量す
なわち復水器出口総流量から復水器バイパス弁で流すべ
き冷却水の流量を予測することができるのである。The flow rate of cooling water to be flowed through the condenser bypass valve can be predicted from the waste water temperature, the inlet/outlet temperature difference setting, and the waste water flow rate, that is, the total flow rate at the condenser outlet.
この予測は予測信号作成器１０８により行われる。This prediction is performed by the predicted signal generator 108.
すなわち、蒸気タービンの排気量はそれに比例する発電
機出力Ｇ１として入力する。That is, the displacement of the steam turbine is input as the generator output G1 proportional to it.
というのは、蒸気タービン排気と冷却水との間で行われ
る交換熱量は一段に蒸気タービン排気温度が一定である
ため蒸気流量に比例し、かつ、蒸気流量が発電機出力Ｇ
１に比例しているから発電負出力Ｇ１を入力することは
蒸気タービンの排気量を入力したことと同視できるから
である。This is because the amount of heat exchanged between the steam turbine exhaust and the cooling water is proportional to the steam flow rate because the steam turbine exhaust temperature is constant, and the steam flow rate is proportional to the generator output G.
1, so inputting the negative power generation output G1 can be equated with inputting the displacement of the steam turbine.
また冷却水の温度は入口温度検出器により検出した入口
温度Ｔ１を入力すること、冷却水流量は復水器出口流量
Ｑ１を入力することにより予測信号作成器１０８に取り
入れ、予測に必要な演算処理に必要な情報とすることが
できる。In addition, the temperature of the cooling water is inputted by inputting the inlet temperature T1 detected by the inlet temperature detector, and the flow rate of the cooling water is inputted into the prediction signal generator 108 by inputting the condenser outlet flow rate Q1, and the arithmetic processing necessary for prediction is carried out. It can be the information necessary for
また、蒸気タービン温度及び冷却面積も予測に必要であ
るがこれらは一般に一定値であり、温度差設定値ΔＴｓ
は温度差設定器１０３の出力を取入れることにより、予
測に必要な条件はすべて整うことになる。In addition, the steam turbine temperature and cooling area are also necessary for prediction, but these are generally constant values, and the temperature difference set value ΔTs
By taking in the output of the temperature difference setter 103, all the conditions necessary for prediction are satisfied.
すなわち、以上の各値から熱交換によって生じる排水温
度変化量を求めるとともに復水器の出口流量と温度差設
定値ΔＴｓにより取水口入口温度と排水口出口温度との
差を設定値と一致させるために必要な復水器バイパス弁
の流量及び復水器バイパス弁の予測開度Ｂｖ２を演算し
出力する。In other words, from each of the above values, the amount of change in waste water temperature caused by heat exchange is determined, and in order to match the difference between the water intake inlet temperature and the drain outlet temperature with the set value using the condenser outlet flow rate and temperature difference set value ΔTs. The flow rate of the condenser bypass valve and the predicted opening degree Bv2 of the condenser bypass valve required for this are calculated and output.
また一方入口温度と出口温度との差ΔＴａと、温度差設
定値ΔＴｓの差εＴが入力される補正信号作成器１０６
は不感帯を有し、εＴが不感帯を載脱したときにはじめ
て復水器バイパス弁流量が変化してから排水口温度が変
化するまでの遅れを考慮した復水器バイパス弁開度値Ｂ
ｖ１を出力する。On the other hand, a correction signal generator 106 receives the difference ΔTa between the inlet temperature and the outlet temperature and the difference εT between the temperature difference set value ΔTs.
has a dead zone, and the condenser bypass valve opening value B takes into consideration the delay from when the condenser bypass valve flow rate changes until the drain outlet temperature changes for the first time when εT passes the dead zone.
Output v1.
そして、加算器１０７により予測開度値Ｂｖ２と補正開
度値Ｂｖ１を加算し、その出力Ｂｖ３を加算器１０８及
び１０９に入力し、開度検出器１５Ａ及び１５Ｂで検出
した実際のバイパス弁の開度値Ｂｖａ１及びＢｖａ２と
の差Ｂｖε１及びＢｖε２を求め、これを対応する調節
器Ａ及びＢに入力し、差が零になるように復水器バイパ
ス弁開度調節電動機１２Ａ及び１２Ｂを駆動するので、
入口温度と出口温度との温度差が設定温度差と一致する
ように復水器バイパス弁１１Ａ及びＩＩＢを流れる冷却
水量を制御することができるのである。Then, the adder 107 adds the predicted opening value Bv2 and the corrected opening value Bv1, and the output Bv3 is input to the adders 108 and 109, and the actual bypass valve opening detected by the opening detectors 15A and 15B is The difference Bvε1 and Bvε2 between the temperature values Bva1 and Bva2 is calculated, and these are input to the corresponding regulators A and B, and the condenser bypass valve opening adjustment motors 12A and 12B are driven so that the difference becomes zero. ,
The amount of cooling water flowing through the condenser bypass valves 11A and IIB can be controlled so that the temperature difference between the inlet temperature and the outlet temperature matches the set temperature difference.
上記実施例においては復水器バイパス弁開度値を予測信
号及び補正信号をつくり、かつ復水器弁開度を帰還する
ことによりつくっていたが予測信号及び補正信号を復水
器バイパス弁の流量値とし復水器バイパス弁流量を帰還
する態様でも本発明を実施することができる。In the above embodiment, the condenser bypass valve opening value was created by creating a prediction signal and a correction signal, and feeding back the condenser valve opening. The present invention can also be implemented in a mode in which the condenser bypass valve flow rate is fed back as a flow rate value.
また、復水器出口総流量に代えて復水器入口総流量又は
復水器人口弁開度値を入力しても同じように排水温度の
制御をすることがきる。Furthermore, the wastewater temperature can be controlled in the same way by inputting the condenser inlet total flow rate or the condenser artificial valve opening value instead of the condenser outlet total flow rate.
なお、復水器人口弁３Ａ及び３Ｂ（第１図参照のこと）
の調節は復水処理とタービン効率運転のため別に設けら
れた装置又は手動により調整されている。In addition, condenser valves 3A and 3B (see Figure 1)
The adjustment is done by a separate device or manually for condensate treatment and turbine efficient operation.
以上説明したように本発明によれば制御系の遅れ時間及
び無駄時間を考慮した予測信号を演算により得て温度変
化が生じる前に排水口温度制御を行うので、即応性に優
れ高い精度の温度制御を行うことができるのである。As explained above, according to the present invention, a predictive signal that takes into account the delay time and dead time of the control system is obtained by calculation, and the drain outlet temperature is controlled before a temperature change occurs. It is possible to control it.
第１図は排水温度制御の対象となる一般的な復水装置の
冷却水系統図、第２図は従来の排水温度制御装置を示す
構成図、第３図は本発明の一実施例に係る排水温度制御
装置を示す構成図である。
１・・・・・・取水口、２Ａ、２Ｂ・・・・・・循環水
ポンプ、３Ａ、３Ｂ・・・・・・復水器、４Ａ、４Ｂ・
・・・・・弁開度調節電動機、５Ａ、５Ｂ・・・・・・
復水器氷室、６・・・・・・復水器、７・・・・・・蒸
気タービン、８Ａ、８Ｂ・・・・・・復水器出目弁、９
Ａ、９Ｂ・・・・・・電磁操作器、１０・・・・・・排
水口、１１Ａ、１１Ｂ・・・・・・復水器バイパス弁、
１２Ａ、１２Ｂ・・・・・・復水器バイパス弁開度調節
電動機、１３・・・・・・入口温度検出器、１４・・・
・・・出口温度検出器、１５Ａ、１５Ｂ・・・・・・開
度検出器、１６・・・・・・電力検出器、１７・・・・
・・流量検出器、１００・・・・・・排水温度制御装置
、１０１，１０２，１０７゜１０９．１１０・・・・・
・加算器、１０３・・・・・・温度差設定器、１０４，
１０５・・・・・・調節器、１０６・・・・・・補正信
号作成器、１０８・・・・・・予測信号作成器。Fig. 1 is a cooling water system diagram of a general condensing device that is subject to wastewater temperature control, Fig. 2 is a block diagram showing a conventional wastewater temperature control device, and Fig. 3 is a diagram showing an embodiment of the present invention. It is a block diagram showing a drainage temperature control device. 1... Water intake, 2A, 2B... Circulating water pump, 3A, 3B... Condenser, 4A, 4B.
...Valve opening adjustment motor, 5A, 5B...
Condenser ice chamber, 6...Condenser, 7...Steam turbine, 8A, 8B...Condenser outlet valve, 9
A, 9B... Solenoid operator, 10... Drain port, 11A, 11B... Condenser bypass valve,
12A, 12B... Condenser bypass valve opening adjustment motor, 13... Inlet temperature detector, 14...
... Outlet temperature detector, 15A, 15B... Opening degree detector, 16... Power detector, 17...
...Flow rate detector, 100...Drainage temperature control device, 101,102,107゜109.110...
・Adder, 103...Temperature difference setting device, 104,
105...Adjuster, 106...Correction signal generator, 108...Predicted signal generator.
Claims (1)
ることにより復水器の排水温度を制御する制御装置にお
いて、冷却水の取入口温度検出信号、冷却水の流量検出
信号及び発電機の出力検出信号を少なくとも入力し、こ
れにより熱交換を終えた排水に混合すべき冷却水の量を
予測する第１の回路と、実際の冷却水の取入口温度検出
信号と排水口温度検出信号とを入力し排水に混合すべき
冷却水の補正信号を発生する第２の回路と、第１の回路
の出力と第２の回路の出力とを加算する第３の回路とを
少なくとも具備し、この第３の回路の出力によって排水
に混合する冷却水の供給量を制御することを特徴とする
復水器の排水温度制御装置。1. In a control device that controls the temperature of a condenser's wastewater by adjusting the amount of cooling water mixed with the wastewater that has undergone heat exchange, a cooling water intake temperature detection signal, a cooling water flow rate detection signal, and a generator are used. A first circuit which inputs at least an output detection signal of and predicts the amount of cooling water to be mixed with the waste water after heat exchange, and an actual cooling water intake temperature detection signal and a drain outlet temperature detection signal. and a third circuit that adds the output of the first circuit and the output of the second circuit, A condenser waste water temperature control device characterized in that the supply amount of cooling water mixed with waste water is controlled by the output of the third circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8366878A JPS5953470B2 (en) | 1978-07-10 | 1978-07-10 | Condenser wastewater temperature control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8366878A JPS5953470B2 (en) | 1978-07-10 | 1978-07-10 | Condenser wastewater temperature control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5512335A JPS5512335A (en) | 1980-01-28 |
| JPS5953470B2 true JPS5953470B2 (en) | 1984-12-25 |
Family
ID=13808841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8366878A Expired JPS5953470B2 (en) | 1978-07-10 | 1978-07-10 | Condenser wastewater temperature control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5953470B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63160738A (en) * | 1986-12-24 | 1988-07-04 | Mitsubishi Nagasaki Kiko Kk | Method and device for forging thin pipe by free forging press |
-
1978
- 1978-07-10 JP JP8366878A patent/JPS5953470B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5512335A (en) | 1980-01-28 |
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