JPS63295997A - Warming control apparatus of plant - Google Patents
Warming control apparatus of plantInfo
- Publication number
- JPS63295997A JPS63295997A JP62129631A JP12963187A JPS63295997A JP S63295997 A JPS63295997 A JP S63295997A JP 62129631 A JP62129631 A JP 62129631A JP 12963187 A JP12963187 A JP 12963187A JP S63295997 A JPS63295997 A JP S63295997A
- Authority
- JP
- Japan
- Prior art keywords
- superheater
- temperature
- warming
- inlet
- steam
- 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
- 238000010792 warming Methods 0.000 title claims abstract description 60
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 23
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 23
- 239000011734 sodium Substances 0.000 claims abstract description 23
- 230000001105 regulatory effect Effects 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 19
- 239000000284 extract Substances 0.000 claims 1
- 230000010354 integration Effects 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 abstract 1
- 239000002826 coolant Substances 0.000 description 4
- 230000008646 thermal stress Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- 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
- Y02E30/00—Energy generation of nuclear origin
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、高速増殖炉発電プラント等において蒸気を過
熱する過熱器やその過熱器の入口配管および出口配管等
のウオーミングを行なうためのプラ□ントのウオーミン
グ制御装置に関する。[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) The present invention is directed to warming a superheater that superheats steam in a fast breeder reactor power plant, etc., and the inlet piping and outlet piping of the superheater. This invention relates to a warming control device for a plant.
（従来の技術）
高速贈殖炉発電プラントは、一般に液体ナトリウムを冷
却材とする原子炉と、この原子炉内で発生した熱エネル
ギを一次冷却材を介して中間熱交換器へ移送する一次冷
却系と、中間熱交換器で一次冷却材と熱交換を行なった
二次冷却材を蒸気発生器へ移送する二次冷却系と、蒸気
発生器で発生した蒸気を蒸気タービンへ移送する水・蒸
気系から構成される装置
このような高速増殖炉発電プラントにおける水・蒸気系
は、蒸発器で発生した蒸気を過熱器で過熱してから蒸気
タービンへ送る構成となっているが、プラントの起動運
転時には上記過熱器および過熱器の入口配管や出口配管
等は常温となっているため、ウオーミングを行なって過
熱器等に加わるサーマルストレスを低減する必要がある
。このウオーミングは通常補助ボイラからの低温蒸気を
用いて行なわれ、運転員が過熱器の入口温度および出口
温度、その温度上昇率等を監視しながら過熱器ウオーミ
ング用調整弁の弁開度を操作して行なっている。(Prior technology) A fast reactor power plant generally consists of a nuclear reactor that uses liquid sodium as a coolant, and a primary cooling system that transfers the thermal energy generated within the reactor to an intermediate heat exchanger via a primary coolant. A secondary cooling system that transfers the secondary coolant that has exchanged heat with the primary coolant in the intermediate heat exchanger to the steam generator, and water and steam that transfers the steam generated in the steam generator to the steam turbine. The water/steam system in such a fast breeder reactor power plant is configured such that the steam generated in the evaporator is superheated in a superheater and then sent to the steam turbine. Since the superheater and the inlet piping and outlet piping of the superheater are sometimes at room temperature, it is necessary to perform warming to reduce the thermal stress applied to the superheater and the like. This warming is normally performed using low-temperature steam from an auxiliary boiler, and the operator controls the valve opening of the superheater warming control valve while monitoring the superheater inlet and outlet temperatures, the temperature rise rate, etc. is being carried out.
しかしながら、このようなウオーミング操作は熟練した
運転員の経験を必要とするばかりでなく、運転員数の増
加および運転員への負担増加を招き、また運転員の操作
ミスにより過熱器および過熱器の入口配管や出口配管等
に過大なサーマルストレスが加わり、プラントの健全性
が損われる可能性があった。However, such a warming operation not only requires the experience of a skilled operator, but also increases the number of operators and increases the burden on the operators.In addition, operator errors may cause damage to the superheater and the inlet of the superheater. Excessive thermal stress was applied to piping, outlet piping, etc., and the health of the plant could be compromised.
（発明が解決しようとする問題点）
上述したように従来例では過熱器の入口温度および出口
温度、その温度上昇率等を運転員が監視しながら過熱器
ウオーミング用調整弁の弁開度を操作していたため、熟
練した運転員の経験を必要とし、さらに運転員数の増加
および運転員への負担増加を招いていた。また、運転員
の操作ミスにより過熱器および過熱器の入口配管や出口
配管に過大なサーマルストレスが加わり、プラントの健
全性が損われる可能性もあった。(Problems to be Solved by the Invention) As mentioned above, in the conventional example, the operator monitors the inlet temperature and outlet temperature of the superheater, the temperature increase rate, etc., and controls the valve opening of the superheater warming regulating valve. Therefore, the experience of skilled operators was required, which further increased the number of operators and the burden on them. Furthermore, due to operator error, excessive thermal stress was applied to the superheater and the inlet and outlet piping of the superheater, potentially damaging the health of the plant.
また、通常補助ボイラからの蒸気は例えば２００℃の低
温度であるため、過熱器の入口側に補助蒸気ラインを設
け、過熱器を通過させた高温蒸気で過熱器出口配管等を
過熱器の通気温度、例えば４５０℃までウオーミングを
行なう。ここで過熱器のナトリウム側はｉｔ、ｌＪ Ｉ
ｎ棒の引抜操作に対応して昇温するため、過熱器を通過
した蒸気温度も次第に高くなり、このようなウオーミン
グ用蒸気温度の変化に対応した制御装置が要求されてい
た。In addition, since the steam from the auxiliary boiler is usually at a low temperature of, for example, 200°C, an auxiliary steam line is installed on the inlet side of the superheater, and the high-temperature steam that has passed through the superheater is used to vent the superheater outlet piping. Warming is performed to a temperature of, for example, 450°C. Here, the sodium side of the superheater is it, lJ I
Since the temperature of the steam passing through the superheater increases as the temperature rises in response to the drawing operation of the n-rod, the temperature of the steam passing through the superheater also gradually increases, and a control device that can cope with such changes in the temperature of the warming steam has been required.
本発明はこのような事情に基づいてなされたもので、そ
の目的は、過熱器や過熱器の入口配管および出口配管等
のウオーミングを運転員の手を介さず自動的に行なうこ
とができ、運転員の削減および負担軽減を図ることがで
きるとともに、プラントの信頼性向上を図ることができ
るプラントのウオーミング制御装置を提供することにあ
る。The present invention was developed based on the above circumstances, and its purpose is to automatically warm the superheater and the inlet and outlet piping of the superheater without the operator's intervention. An object of the present invention is to provide a warming control device for a plant, which can reduce the number of personnel and reduce the burden, and improve the reliability of the plant.
（問題点を解決するための手段）
本発明は、過熱器に蒸気を導入する過熱器入口配管に設
けられ過熱器の入口温度を検出する過熱器入口温度検出
器と、前記過熱器で過熱された蒸気を導出する過熱器出
口配管に設けられ、過熱器の出口温度を検出する過熱器
出口温度検出器と、前記過熱器にナトリウムを導入する
過熱器ナトリウム側入口配管に設けられ、過熱器のナト
リウム側入口温度を検出する過熱器入口ナトリウム温度
検出器と、前記過熱器入口配管に接続されウオーミング
用補助蒸気を導入するウオーミング用補助蒸気配管と、
このウオーミング用蒸気の流量を調整するウオーミング
用補助蒸気流量調整弁と、前記過熱器入口温度検出器、
過熱器出口温度検出器および過熱器入口ナトリウム温度
検出器からの検出信号に基づいて前記ウオーミング用補
助蒸気流量調整弁の弁開度を制御する弁開度制御装置と
を具備したことを特徴としている。(Means for Solving the Problems) The present invention includes a superheater inlet temperature detector that is installed in a superheater inlet pipe that introduces steam into the superheater and detects the inlet temperature of the superheater; A superheater outlet temperature detector is installed on the superheater outlet piping to extract the steam from the superheater and detects the exit temperature of the superheater. a superheater inlet sodium temperature detector that detects the sodium side inlet temperature; a warming auxiliary steam pipe that is connected to the superheater inlet pipe and introduces warming auxiliary steam;
a warming auxiliary steam flow rate adjustment valve that adjusts the flow rate of the warming steam; and the superheater inlet temperature detector;
It is characterized by comprising a valve opening degree control device that controls the valve opening degree of the warming auxiliary steam flow rate regulating valve based on detection signals from a superheater outlet temperature detector and a superheater inlet sodium temperature detector. .
（作用）
本発明に係るプラントのウオーミング制御装置は、過熱
器入口温度検出器および過熱器出口温度検出器で検出さ
れた過熱器入口温度および過熱器出口温度をそれぞれ固
定設定値と過熱器入口ナトリウムの温度の関数で定まる
設定値と比較して偏差の高い方の値を温度偏差信号とし
、上記過熱器入口温度および過熱器出口温度の温度変化
率をそれぞれ固定設定値と比較して偏差の低い方の値を
温度変化率偏差積分信号とし、これらの温度偏差信号と
湿度変化率偏差積分信号とを比較して低い値の信号を比
例積分してウオーミング用補助蒸気流量調整弁の弁開度
制御信号とするものである。(Function) The plant warming control device according to the present invention sets the superheater inlet temperature and the superheater outlet temperature detected by the superheater inlet temperature detector and the superheater outlet temperature detector to a fixed set value and a superheater inlet sodium temperature, respectively. The value with the higher deviation compared with the set value determined as a function of the temperature is taken as the temperature deviation signal, and the temperature change rate of the superheater inlet temperature and the superheater outlet temperature are compared with the fixed set value, respectively, and the value with the lower deviation is used as the temperature deviation signal. This value is taken as the temperature change rate deviation integral signal, these temperature change signals are compared with the humidity change rate deviation integral signal, and the signal with the lower value is proportionally integrated to control the valve opening of the auxiliary steam flow rate adjustment valve for warming. It is used as a signal.
（実施例）
以下、本発明の一実施例について図面を参照して説明す
る。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例を示し、′ｉ：Ｓ速増殖炉発
電プラントにおけるウオーミング制御装置の構成を示し
たものである。図中符号１は蒸発器で発生した蒸気を過
熱器２に供給する過熱器入口配管であり、この過熱器２
で過熱された蒸気が過熱器出口配管３を通って図示しな
い蒸気タービンへ送られるようになっている。過熱器入
口配管１および過熱器出口配管３にはそれぞれ止め弁４
，５が設けられており、それぞれ規定の過熱度を有さな
い蒸気が蒸発器から過熱器２に流入しないように、また
ウオーミング蒸気がタービンに流入しないように、ウオ
ーミング時には閉としている。FIG. 1 shows an embodiment of the present invention, and shows the configuration of a warming control device in an 'i:S fast breeder reactor power plant. Reference numeral 1 in the figure is a superheater inlet pipe that supplies steam generated in the evaporator to the superheater 2;
The superheated steam is sent to a steam turbine (not shown) through a superheater outlet pipe 3. A stop valve 4 is provided in each of the superheater inlet pipe 1 and the superheater outlet pipe 3.
, 5 are provided, and are closed during warming to prevent steam that does not have a specified degree of superheat from flowing into the superheater 2 from the evaporator, and to prevent warming steam from flowing into the turbine.
前記過熱器入口配管１にはウオーミング用補助蒸気配管
６が接続されている。このウオーミング用補助蒸気配管
６にはウォーミング用補助蒸気流量調整弁７／ＪすＱけ
られ、この流量調整弁７でウオーミング用補助蒸気の流
は調整を行なうようになっている。ウオーミング用補助
蒸気は図示しない補助ボイラから供給され、その温１食
は約２００℃程度である。A warming auxiliary steam pipe 6 is connected to the superheater inlet pipe 1. This auxiliary warming steam piping 6 is provided with a warming auxiliary steam flow rate adjustment valve 7/JSQ, and the flow rate of the warming auxiliary steam is adjusted by the flow rate adjustment valve 7. Auxiliary steam for warming is supplied from an auxiliary boiler (not shown), and its temperature is approximately 200°C.
また、過熱器入口配管１および過熱器出口配管３にはそ
れぞれ過熱器人口ドレン配管８および過熱器出口ドレン
配管９が設けられており、図示しないドレンタンクに接
続されている。前記過熱器入口ドレン配管８および過熱
器出口ドレン配管９には、それぞれ過熱器人口ドレン弁
１０および過熱器出口ドレン弁１１が設けられている。Further, the superheater inlet pipe 1 and the superheater outlet pipe 3 are provided with a superheater artificial drain pipe 8 and a superheater outlet drain pipe 9, respectively, and are connected to a drain tank (not shown). The superheater inlet drain pipe 8 and the superheater outlet drain pipe 9 are provided with a superheater artificial drain valve 10 and a superheater outlet drain valve 11, respectively.
また、過熱器入口配管１および過熱器出口配管３にはそ
れぞれ過熱器入口温度検出器１２および過熱器出口温度
検出器１３が取付けられている。Further, a superheater inlet temperature detector 12 and a superheater outlet temperature detector 13 are attached to the superheater inlet pipe 1 and the superheater outlet pipe 3, respectively.
過熱器２には過熱器ナトリウム側入口配管１４および過
熱器ナトリウム側出口配管１５も接続されており、前者
には過熱器入口ナトリウム温度検出器１６が取付けられ
ている。これらの温度検出器１２，１３．１６からの信
号は弁開度制御装置１７に入力され、この弁開度制御装
置１７から出力される制御信号で前記ウオーミング用補
助蒸気流量調整弁７の弁開度制御が行なわれるようにな
っている。A superheater sodium side inlet pipe 14 and a superheater sodium side outlet pipe 15 are also connected to the superheater 2, and a superheater inlet sodium temperature detector 16 is attached to the former. Signals from these temperature detectors 12, 13, and 16 are input to a valve opening controller 17, and the control signal output from the valve opening controller 17 controls the opening of the warming auxiliary steam flow rate regulating valve 7. control is now in place.
第２図は弁開度制御装置１Ｆ１７の構成を示すもので、
過熱器入口温度検出器１２から入力される過熱器入口温
度検出信号Ｔ１および過熱器出口温度検出器１３から入
力される過熱器出口温度検出信号Ｔ２は、弁開度制御装
置１７の比較器２１．２２でそれぞれ過熱器入口温度設
定値Ｓ１および過熱器出口温度設定値Ｓ２と比較された
接、高値選択回路２３によって偏差の高い方の値が温度
偏差信号Ｓとして選択される。′
温度検出器１６から入力される過熱器の入口ナトリウム
温度検出信号Ｔ３は関数演算器２４に入力され、その演
算結果が過熱器出口温度設定値Ｓ２となる。Figure 2 shows the configuration of the valve opening control device 1F17.
The superheater inlet temperature detection signal T1 inputted from the superheater inlet temperature detector 12 and the superheater outlet temperature detection signal T2 inputted from the superheater outlet temperature detector 13 are sent to the comparator 21. 22, the value with the higher deviation is selected as the temperature deviation signal S by the high value selection circuit 23, which is compared with the superheater inlet temperature set value S1 and the superheater outlet temperature set value S2, respectively. ' The superheater inlet sodium temperature detection signal T3 inputted from the temperature detector 16 is inputted to the function calculator 24, and the calculation result becomes the superheater outlet temperature set value S2.
また、過熱器入口温度検出信号Ｔ１および過熱器出口温
度検出信号Ｔ２は弁開度制御装置１７の微分回路２５．
２６でそれぞれ温度変化率に変換された後、比較器２７
．２８でそれぞれ過熱器入口温度変化率設定値Ｌ１Ｊ５
よび過熱器出口温度変化率設定値Ｌ２と比較され、さら
に積分回路２９゜３０で積分された模、低値選択回路３
１によって積分値の低い方の値が温度変化率ｌｉ；ｉ差
積分信号しとして選択される。そして、前記高値選択回
路２３から出力される温度偏差信号Ｓおよび低値選択回
路３１から出力される温度変化率偏差積分信号りは、低
値選択回路３２を介して比例積分回路３３に入力され、
この比例積分回路３３の出力信号を前記ウオーミング用
補助蒸気流量調整弁７に供給する構成となっている。Further, the superheater inlet temperature detection signal T1 and the superheater outlet temperature detection signal T2 are sent to the differential circuit 25 of the valve opening control device 17.
After being converted into a temperature change rate at 26, the comparator 27
．． 28 and the superheater inlet temperature change rate set value L1J5 respectively.
and the superheater outlet temperature change rate set value L2, and further integrated by the integrating circuit 29 and 30.
1, the lower integral value is selected as the temperature change rate li;i difference integral signal. The temperature deviation signal S output from the high value selection circuit 23 and the temperature change rate deviation integral signal output from the low value selection circuit 31 are input to the proportional integration circuit 33 via the low value selection circuit 32,
The output signal of this proportional-integral circuit 33 is supplied to the warming auxiliary steam flow rate regulating valve 7.
このような構成において、過熱器２、過熱器入口配管１
および過熱器出口配管３のウオーミングを行なう場合は
過熱器入口ドレン弁１０および過熱器出口ドレン弁１１
を「開」とした後にウオーミング用補助蒸気配管６より
ウオーミング用補助蒸気を導入し、過熱器入口配管１、
過熱器２、過熱器出口配管３の順でウオーミングを行な
うが、ウオーミング用補助蒸気を急激に導入すると過熱
器入口配管１や過熱器２および過熱器出口配管３にサー
マルストレスが加わる恐れがあるため、ある一定の温度
変化率に従って昇温させる必要がある。In such a configuration, the superheater 2, the superheater inlet pipe 1
When warming the superheater outlet piping 3, the superheater inlet drain valve 10 and the superheater outlet drain valve 11
After opening, auxiliary steam for warming is introduced from auxiliary steam piping 6 for warming, and superheater inlet piping 1,
Warming is performed in the order of superheater 2 and superheater outlet piping 3, but if auxiliary steam for warming is rapidly introduced, thermal stress may be applied to superheater inlet piping 1, superheater 2, and superheater outlet piping 3. , it is necessary to raise the temperature according to a certain rate of temperature change.
ウオーミング開始時においては、過熱器入口温度検出器
１２および過熱器出口温度検出器１３から出力される過
熱器入口温度検出信号Ｔ１および過熱器出口温度検出信
号Ｔ２はほぼ常温に近い値であるのに対し、過熱器入口
温度設定値Ｓ１および過熱器出口温度設定値Ｓ２は過熱
器２の運転時に合せた高い温度設定（例えば２００℃に
近い値）となっている。したがって、ウオーミング開始
時に高値選択回路２３から出力される温度偏差信号Ｓは
大きな正の値となり、その結果、比例積分回路３３から
はウオーミング用補助蒸気流量調整弁７を「開」に操作
する制御信号が出力される。At the start of warming, the superheater inlet temperature detection signal T1 and the superheater outlet temperature detection signal T2 output from the superheater inlet temperature detector 12 and the superheater outlet temperature detector 13 are almost at room temperature. On the other hand, the superheater inlet temperature set value S1 and the superheater outlet temperature set value S2 are high temperature settings (for example, a value close to 200° C.) suitable for when the superheater 2 is in operation. Therefore, the temperature deviation signal S output from the high value selection circuit 23 at the start of warming has a large positive value, and as a result, the proportional integral circuit 33 outputs a control signal to open the warming auxiliary steam flow rate regulating valve 7. is output.
このようにしてウオーミング用補助蒸気流量調整弁７が
開となり、ウオーミング用補助蒸気配管６から過熱器入
口配管１にウオーミング用補助蒸気が導入されると、過
熱器入口温度検出信号Ｔ１または過熱器出口温度検出信
号Ｔ２は過熱器入口温度変化率設定値Ｌ１または過熱器
出口温度変化率設定（ｉＩＬ２を超えて急激に上昇する
。このとき、低値選択回路３１から出力される温度変化
率偏差積分信号りは負の値となり、比例積分回路３２か
らはウオーミング用補助蒸気流過調整弁７を「閉」に操
作する制御信号が出力される。In this way, when the warming auxiliary steam flow rate adjustment valve 7 is opened and the warming auxiliary steam is introduced from the warming auxiliary steam pipe 6 to the superheater inlet pipe 1, the superheater inlet temperature detection signal T1 or the superheater outlet The temperature detection signal T2 rapidly increases beyond the superheater inlet temperature change rate set value L1 or the superheater outlet temperature change rate setting (iIL2. At this time, the temperature change rate deviation integral signal output from the low value selection circuit 31 is a negative value, and the proportional-integral circuit 32 outputs a control signal to close the warming auxiliary steam overflow control valve 7.
このとき正の温度偏差信号Ｓと零近傍の温度変化率偏差
積分信号りとでは後者が低値選択されるため、過熱器２
の入口温度および出口温度は過熱器入口温度変化率設定
値Ｌ１および過熱器出口温度変化率設定値し２を超えな
い範囲で昇温されることになる。At this time, between the positive temperature deviation signal S and the temperature change rate deviation integral signal near zero, the latter is selected as a low value, so the superheater 2
The inlet temperature and outlet temperature of the superheater inlet temperature change rate set value L1 and the superheater outlet temperature change rate set value L1 will be increased within a range that does not exceed 2.
一方、通常補助ボイラからのウオーミング蒸気の温度は
約２００℃程度であり、過熱器入口配管１はこの温度ま
でウオーミングされる。過熱器入口温度設定値Ｓ１はこ
の近傍として設定する。しかし、過熱器出口配管３はウ
オーミング蒸気が過熱器２を過熱するときにほぼ過熱器
入口ナトリウム温度Ｔ３近傍まで過熱される。過熱器人
口す１−リウム温度Ｔ３は制御棒の引抜により温度上昇
し、これに伴って過熱器２出口の蒸気温度も上昇する。On the other hand, the temperature of the warming steam from the auxiliary boiler is usually about 200° C., and the superheater inlet pipe 1 is warmed to this temperature. The superheater inlet temperature set value S1 is set near this value. However, when the warming steam superheats the superheater 2, the superheater outlet pipe 3 is superheated almost to the vicinity of the superheater inlet sodium temperature T3. The temperature T3 of the superheater chamber rises due to the withdrawal of the control rod, and the steam temperature at the outlet of the superheater 2 also rises accordingly.
過熱器出口温度Ｔ２は最終的に過熱器通気温度（例えば
４５０℃）に保持されればよい。The superheater outlet temperature T2 may ultimately be maintained at the superheater ventilation temperature (for example, 450° C.).
ここで、過熱器出口温度設定Ｓ２をこの過熱器通気温度
に固定設定すると、ウオーミング開始時点においては過
熱器出口配管側に大きな正の偏差信号が出力され、常に
過熱器出口温度検出信号Ｔ２で温度制御が行なわれ、過
熱器入口温度検出信号Ｔ１が無視される。ウオーミング
時に常に過熱器入口配管１、過熱器出口配管３をバラン
スよく温度制御するためには、過熱器出口温度設定値Ｓ
２を過熱器入口ナトリウム温度の関数とする必要があり
、関数演算器２４に第３図に示す特性を設定する。Here, if the superheater outlet temperature setting S2 is fixedly set to this superheater ventilation temperature, a large positive deviation signal is output to the superheater outlet piping side at the start of warming, and the temperature is always determined by the superheater outlet temperature detection signal T2. Control is performed and the superheater inlet temperature detection signal T1 is ignored. In order to always control the temperature of the superheater inlet pipe 1 and the superheater outlet pipe 3 in a well-balanced manner during warming, the superheater outlet temperature set value S
2 needs to be a function of the superheater inlet sodium temperature, and the characteristic shown in FIG. 3 is set in the function calculator 24.
次に、ウオーミングが充分性なわれ、過熱器入口温度検
出信号Ｔ１および過熱器出口温度検出信号Ｔ２がほぼ過
熱器入口温度設定値Ｓ１および過熱器出口温度設定値Ｓ
２に近付くと、温度上昇が飽和状態となり、それぞれの
温度変化率は零近くとなる。このとき過熱器入口温度変
化率設定値Ｌ１および過熱器出口温度変化率設定値Ｌ２
は正の１直であるため、温度変化率偏差積分信号しは正
の値となる。Next, when the warming is completed, the superheater inlet temperature detection signal T1 and the superheater outlet temperature detection signal T2 are approximately equal to the superheater inlet temperature set value S1 and the superheater outlet temperature set value S.
As the temperature approaches 2, the temperature rise reaches a saturated state, and each rate of temperature change becomes close to zero. At this time, the superheater inlet temperature change rate set value L1 and the superheater outlet temperature change rate set value L2
Since is a positive one, the temperature change rate deviation integral signal becomes a positive value.
一方、過熱器入口温度検出信号Ｔ１および過熱器出口温
度検出信号Ｔ２はそれぞれ過熱器入口温度設定値Ｓ１お
よび過熱器出口温度設定値Ｓ２に近付くため、その偏差
の高値選択値である温度偏差信号Ｓは零近傍の値となる
。この零近傍の温度偏差信号Ｓと正の温度変化率偏差積
分信号りとでは前者が低値選択されるため、過熱器２の
入口温度および出口温度はそれぞれ過熱器入口温度設定
値Ｓ１．１５よび過熱器出口温度設定値＄２近傍に保た
れることになる。On the other hand, since the superheater inlet temperature detection signal T1 and the superheater outlet temperature detection signal T2 approach the superheater inlet temperature set value S1 and the superheater outlet temperature set value S2, respectively, the temperature deviation signal S which is the highest selected value of the deviation is a value near zero. Since the former is selected as a low value between the near-zero temperature deviation signal S and the positive temperature change rate deviation integral signal, the inlet temperature and outlet temperature of the superheater 2 are set to the superheater inlet temperature set value S1.15 and the positive temperature change rate deviation integral signal, respectively. The superheater outlet temperature will be maintained near the set value of $2.
以上のように本発明によれば、ウオーミング用補助蒸気
流石調整弁の弁開度を過熱器入口温度検出器および過熱
器出口温度検出器の検出信号に基づいて制御するように
したので、過熱器の入口温度および出口温度を所定の温
度変化率に沿って昇温させることができ、しかもその温
度状態を運転開始まで保つことができる。また、過熱器
出口温度設定値を過熱器入口ナトリウム温度の関数とし
たため過熱器のナトリウム側の温度が変化しても過熱器
入口配管、出口配管のバランスのとれたウオーミングが
可能である。したがって、過熱器および過熱器の入口配
管と出口配管のウオーミングを運転員の手を介さず自動
的に行なうことができるとともに、運転員の削減および
負担軽減を図ることができ、プラントの信頼性を大幅に
向上させることができる。As described above, according to the present invention, since the valve opening degree of the warming auxiliary steam control valve is controlled based on the detection signals of the superheater inlet temperature detector and the superheater outlet temperature detector, the superheater It is possible to raise the inlet temperature and the outlet temperature at a predetermined temperature change rate, and to maintain the temperature state until the start of operation. Furthermore, since the superheater outlet temperature setting value is made a function of the superheater inlet sodium temperature, balanced warming of the superheater inlet and outlet piping is possible even if the temperature on the sodium side of the superheater changes. Therefore, warming of the superheater and the inlet and outlet piping of the superheater can be performed automatically without operator intervention, and the number and burden of operators can be reduced, improving plant reliability. can be significantly improved.
第１図から第３図は本発明の一実論例を説明するための
もので、第１図はウオーミング制御装置を示す構成図、
第２図は弁開度制御装置を示す構成図、第３図は関数演
算器に設定する関数を示す特性図である。
１・・・過熱器入口配管、２・・・過熱器、３・・・過
熱器出口配管、４，５・・・止め弁、６・・・ウオーミ
ング用補助蒸気配管、７・・・ウオーミング用補助蒸気
流准調整弁、８・・・過熱器人口ドレン配管、９・・・
過熱器出口ドレン配管、１０・・・過熱器人口ドレン弁
、１１・・・過熱器出口ドレン弁、１２・・・過熱器入
口温度検出器、１３・・・過熱器出口温度検出器、１４
・・・過熱器ナトリウム側入口配管、１５・・・過熱器
ナトリウム側出口配管、１６・・・過熱器人口すｌ・リ
ウム温度検出器、１７・・・弁開度制御装置、２１．２
２・・・比較器、２３・・・高値選択回路、２４・・・
関数演痺器、２５．２６・・・微分回路、２７．２８・
・・比較器、２９．３０・・・積分回路、３１．３２・
・・低値選択回路、３３・・・比例積分回路。1 to 3 are for explaining a practical example of the present invention, and FIG. 1 is a configuration diagram showing a warming control device;
FIG. 2 is a block diagram showing the valve opening degree control device, and FIG. 3 is a characteristic diagram showing the functions set in the function calculator. 1... Superheater inlet piping, 2... Superheater, 3... Superheater outlet piping, 4, 5... Stop valve, 6... Auxiliary steam piping for warming, 7... For warming Auxiliary steam flow adjustment valve, 8... Superheater artificial drain piping, 9...
Superheater outlet drain piping, 10... Superheater artificial drain valve, 11... Superheater outlet drain valve, 12... Superheater inlet temperature detector, 13... Superheater outlet temperature detector, 14
...Superheater sodium side inlet piping, 15...Superheater sodium side outlet pipe, 16...Superheater temperature sensor, 17...Valve opening degree control device, 21.2
2... Comparator, 23... High value selection circuit, 24...
Functional paralysis device, 25.26... Differential circuit, 27.28.
・Comparator, 29.30 ・Integrator circuit, 31.32・
...Low value selection circuit, 33...Proportional integral circuit.
Claims (1)
器の入口温度を検出する過熱器入口温度検出器と、前記
過熱器で過熱された蒸気を導出する過熱器出口配管に設
けられ、過熱器の出口温度を検出する過熱器出口温度検
出器と、前記過熱器にナトリウムを導入する過熱器ナト
リウム側入口配管に設けられ、過熱器のナトリウム側入
口温度を検出する過熱器入口ナトリウム湿度検出器と、
前記過熱器入口配管に接続されウォーミング用補助蒸気
を導入するウォーミング用補助蒸気配管と、このウォー
ミング用蒸気の流量を調整するウォーミング用補助蒸気
流量調整弁と、前記過熱器入口温度検出器、過熱器出口
温度検出器および過熱器入口ナトリウム湿度検出器から
の検出信号に基づいて前記ウォーミング用補助蒸気流量
調整弁の弁開度を制御する弁開制御装置とを具備したこ
とを特徴とするプラントのウォーミング制御装置。A superheater inlet temperature detector is installed in the superheater inlet piping that introduces steam into the superheater and detects the inlet temperature of the superheater, and a superheater inlet temperature detector is installed in the superheater outlet piping that extracts the steam superheated in the superheater. a superheater outlet temperature detector that detects the outlet temperature of the superheater; and a superheater inlet sodium humidity detector that is installed in the superheater sodium side inlet piping that introduces sodium into the superheater and detects the sodium side inlet temperature of the superheater. and,
A warming auxiliary steam pipe that is connected to the superheater inlet pipe and introduces warming auxiliary steam, a warming auxiliary steam flow rate adjustment valve that adjusts the flow rate of the warming steam, and a temperature detection device at the superheater inlet. and a valve opening control device that controls the valve opening degree of the warming auxiliary steam flow rate regulating valve based on detection signals from a superheater outlet temperature detector and a superheater inlet sodium humidity detector. Warming control device for plants with
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62129631A JP2558700B2 (en) | 1987-05-28 | 1987-05-28 | Plant warming controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62129631A JP2558700B2 (en) | 1987-05-28 | 1987-05-28 | Plant warming controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63295997A true JPS63295997A (en) | 1988-12-02 |
| JP2558700B2 JP2558700B2 (en) | 1996-11-27 |
Family
ID=15014271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62129631A Expired - Lifetime JP2558700B2 (en) | 1987-05-28 | 1987-05-28 | Plant warming controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2558700B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016070554A (en) * | 2014-09-29 | 2016-05-09 | 三浦工業株式会社 | Steam superheating system |
| JP2017083153A (en) * | 2015-10-30 | 2017-05-18 | トクデン株式会社 | Overheated steam generation device |
| JP2017116183A (en) * | 2015-12-24 | 2017-06-29 | トクデン株式会社 | Overheated water steam generation device |
-
1987
- 1987-05-28 JP JP62129631A patent/JP2558700B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016070554A (en) * | 2014-09-29 | 2016-05-09 | 三浦工業株式会社 | Steam superheating system |
| JP2017083153A (en) * | 2015-10-30 | 2017-05-18 | トクデン株式会社 | Overheated steam generation device |
| JP2017116183A (en) * | 2015-12-24 | 2017-06-29 | トクデン株式会社 | Overheated water steam generation device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2558700B2 (en) | 1996-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP4257878A1 (en) | Steam generator system, steam generator pressure control system, and control method therefor | |
| US4149386A (en) | System to control low pressure turbine temperatures | |
| JPS63295997A (en) | Warming control apparatus of plant | |
| JPS62217001A (en) | Warming controller for plant | |
| JPS6239646B2 (en) | ||
| JP2758245B2 (en) | Drain water level control device for feed water heater | |
| JPS5923921Y2 (en) | Temperature control device for heated fluid | |
| JPS6132403Y2 (en) | ||
| JPS585412A (en) | Controller for steam turbine plant with reheater | |
| JP3112579B2 (en) | Pressure control device | |
| JPH04148101A (en) | Controlling method for steam drum water level at time of switching of feed water control valve | |
| JPH0223928Y2 (en) | ||
| JPH0443996A (en) | Steam flow rate controller for fast reactor plant | |
| JPS63196912A (en) | Control equipment for nuclear reactor pressure | |
| JPH01208605A (en) | Apparatus for controlling outlet steam temperature of superheater | |
| CN116892719A (en) | Novel control device for bypass drainage of thermal power generating unit based on bypass automatic heating pipe technology | |
| JPH07109283B2 (en) | Nuclear plant control equipment | |
| SU928044A1 (en) | Apparatus for cooling starting unit of straight-through boiler | |
| JPH07109284B2 (en) | Nuclear plant control equipment | |
| JPS6253907B2 (en) | ||
| JPS6291708A (en) | Warming controller for plant | |
| JPH0634071B2 (en) | Reactor heating device | |
| JPH031635B2 (en) | ||
| JPH024102A (en) | Reheater protection device and thermal power plant | |
| JPS6235002B2 (en) |