JPH04127595U - Nuclear power plant chemical injection control device - Google Patents
Nuclear power plant chemical injection control deviceInfo
- Publication number
- JPH04127595U JPH04127595U JP1991033085U JP3308591U JPH04127595U JP H04127595 U JPH04127595 U JP H04127595U JP 1991033085 U JP1991033085 U JP 1991033085U JP 3308591 U JP3308591 U JP 3308591U JP H04127595 U JPH04127595 U JP H04127595U
- Authority
- JP
- Japan
- Prior art keywords
- chemical injection
- water supply
- steam
- pump
- water
- 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.)
- Withdrawn
Links
- 239000000126 substance Substances 0.000 title claims abstract description 107
- 238000002347 injection Methods 0.000 title claims abstract description 83
- 239000007924 injection Substances 0.000 title claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 112
- 238000001514 detection method Methods 0.000 claims abstract description 3
- 229910044991 metal oxide Inorganic materials 0.000 abstract description 20
- 150000004706 metal oxides Chemical class 0.000 abstract description 20
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 abstract description 10
- 239000003814 drug Substances 0.000 description 11
- 229940079593 drug Drugs 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 238000003908 quality control method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 241000287462 Phalacrocorax carbo Species 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
-
- 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
- Y02E30/30—Nuclear fission reactors
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
(57)【要約】
【目的】 蒸気発生器の構造の健全性を長期間にわたり
保持する。
【構成】 蒸気発生器１で発生した蒸気をタービン２へ
導き，ここで仕事をした蒸気を復水器３へ導いて，給水
にし，次いで給水ポンプ４→流量計９→給水ヒータ５を
経て蒸気発生器１へ導き，ここで蒸気にして，再びター
ビン２へ導く。このとき，給水供給系の給水の流量を流
量計９により検出し，そのとき得られた検出信号を制御
器８へ送り，ここで得られた制御信号を薬注ポンプ７へ
送って，同薬注ポンプ７を制御することにより，２次系
の水質管理のための薬品を薬注タンク６→薬注ポンプ７
→給水ポンプ４と流量計との間の給水系へ注入して，２
次系の水質を管理する。そして薬注量の制御設定値を図
３の状態に定めて，給水中に含まれている金属酸化物の
多いプラント運転初期（運転出力が低いプラント運転初
期），図２に示すように給水中の薬品濃度（ヒドラジン
濃度）を高くして，金属酸化物の還元を充分に行う。
(57) [Summary] [Purpose] To maintain the structural integrity of the steam generator for a long period of time. [Structure] Steam generated in a steam generator 1 is led to a turbine 2, and the steam that has done work here is led to a condenser 3 to be used as feed water, and then passed through a feed water pump 4 → flow meter 9 → feed water heater 5 to produce steam. It is led to a generator 1, where it is made into steam, and then led back to a turbine 2. At this time, the flow rate of the water supply in the water supply system is detected by the flow meter 9, the detection signal obtained at that time is sent to the controller 8, the control signal obtained here is sent to the chemical injection pump 7, and the By controlling the injection pump 7, chemicals for secondary water quality management are transferred from the chemical injection tank 6 to the chemical injection pump 7.
→Inject into the water supply system between the water supply pump 4 and the flow meter, and
Manage water quality in secondary systems. Then, the control setting value of the chemical injection amount is set to the state shown in Figure 3, and the feed water is adjusted as shown in Figure 2 during the early stage of plant operation when the amount of metal oxides contained in the feed water is high (the early stage of plant operation when the operating output is low). The chemical concentration (hydrazine concentration) is increased to sufficiently reduce the metal oxide.
Description
【０００１】0001
本考案は，原子力発電プラントの薬注制御装置に関するものである。 This invention relates to a chemical injection control device for a nuclear power plant.
【０００２】0002
原子力発電プラントでは，蒸気発生器で発生した蒸気をタービンへ導き，ここ で仕事をした蒸気を復水器へ導いて，給水にし，次いで給水ポンプ→給水ヒータ を経て蒸気発生器へ導き，ここで蒸気にして，再びタービンへ導く。 このとき，２次系の水質管理のための薬品を薬注タンク→薬注ポンプ→給水供 給系に設けた給水ポンプの下流側の給水供給系へ注入して，２次系の水質を管理 している。 In a nuclear power plant, steam generated in a steam generator is guided to a turbine, where it is The steam that has worked in It is then led to a steam generator, where it is turned into steam and then led back to the turbine. At this time, chemicals for secondary water quality control are transferred from the chemical dosing tank to the chemical dosing pump to the water supply. Controls water quality in the secondary system by injecting water into the water supply system downstream of the water pump installed in the supply system. are doing.
【０００３】 その際，図４に示すように給水中の薬品濃度を，運転出力に関係なく，一定に 保持している。また図５に示すように薬注量の制御設定値を，給水流量に比例さ せている。0003 At that time, as shown in Figure 4, the concentration of chemicals in the water supply is kept constant regardless of the operating output. keeping. In addition, as shown in Figure 5, the control setting value for the chemical injection amount is set in proportion to the water supply flow rate. It's set.
【０００４】0004
前記従来の原子力発電プラントの薬注制御装置には，次の問題があった。 即ち，水質管理のための注入薬品（還元剤）としてヒドラジンが用いられており ，これにより，給水中に含まれている金属酸化物の還元を図っているが，金属酸 化物は，金属が空気に触れた場合に生成し易いため，プラント建設時やプラント 開放点検時後のプラント初期運転時には，給水中に含まれている金属酸化物の濃 度が高くなり，そのため，それを還元するヒドランジンの濃度を高くする必要が ある。 The conventional chemical injection control device for a nuclear power plant has the following problems. In other words, hydrazine is used as an injection chemical (reducing agent) for water quality control. This is intended to reduce the metal oxides contained in the water supply, but the metal oxides Chemicals are easily generated when metals come into contact with air, so they are During initial plant operation after an overhaul inspection, concentrations of metal oxides contained in the feed water are detected. Therefore, it is necessary to increase the concentration of hydrandine to reduce it. be.
【０００５】 しかし前記従来の原子力発電プラントの薬注制御装置では，給水中の薬品濃度 を，運転出力に関係なく，一定に保持しており，給水中の金属酸化物が充分に還 元されないまま，蒸気発生器へ持ち込まれて，蒸気発生器で腐食等が発生し易く なるという問題があった。 本考案は前記の問題点に鑑み提案するものであり，その目的とする処は，蒸気 発生器の構造の健全性を長期間にわたり保持できる原子力発電プラントの薬注制 御装置を提供しようとする点にある。[0005] However, with the chemical injection control device of the conventional nuclear power plant mentioned above, the chemical concentration in the feed water is is maintained constant regardless of the operating output, ensuring that metal oxides in the water supply are sufficiently returned. If it is brought to the steam generator without being recovered, corrosion etc. may easily occur in the steam generator. There was a problem. This invention is proposed in view of the above problems, and its purpose is to Chemical injection control for nuclear power plants that maintains the structural integrity of the generator over long periods of time The point is that we are trying to provide control equipment.
【０００６】[0006]
上記の目的を達成するために，本考案の原子力発電プラントの薬注制御装置は ，タービンから蒸気発生器に向かう給水供給系に設けた薬注供給系と，同薬注供 給系に設けた薬注ポンプと，上記給水供給系に設けた流量計と，同流量計からの 検出信号に基づいて上記薬注ポンプを制御する制御器とを具えている。 In order to achieve the above objectives, the nuclear power plant chemical injection control device of the present invention is , a chemical injection system installed in the water supply system from the turbine to the steam generator, and a chemical injection system installed in the water supply system from the turbine to the steam generator. The chemical injection pump installed in the supply system, the flow meter installed in the water supply system, and the flow rate from the same flow meter. and a controller that controls the drug injection pump based on the detection signal.
【０００７】[0007]
本考案の原子力発電プラントの薬注制御装置は前記のように構成されており， 蒸気発生器で発生した蒸気をタービンへ導き，ここで仕事をした蒸気を復水器へ 導いて，給水にし，次いで給水ポンプ→給水ヒータを経て蒸気発生器へ導き，こ こで蒸気にして，再びタービンへ導く一方，薬品を薬注タンク→薬注ポンプ→給 水供給系へ注入して，２次系の水質を管理しているとき，薬注量の制御設定値を 図３の状態に定めて，給水中に含まれている金属酸化物の多いプラント運転初期 ，図２に示すように給水中の薬品濃度を高くして，金属酸化物の還元を充分に行 う。 The chemical injection control device for a nuclear power plant according to the present invention is configured as described above. The steam generated in the steam generator is guided to the turbine, and the steam that has done work here is sent to the condenser. The water is then introduced to the steam generator via the feed water pump → feed water heater. This converts it into steam and guides it to the turbine again, while the chemicals are transferred from the chemical dosing tank to the chemical dosing pump to the supply. When controlling the water quality of the secondary system by injecting it into the water supply system, the control setting value for the amount of chemical injection can be changed. Based on the conditions shown in Figure 3, the initial stage of plant operation with a large amount of metal oxides contained in the feed water. , as shown in Figure 2, the concentration of chemicals in the water supply is increased to sufficiently reduce metal oxides. cormorant.
【０００８】[0008]
次に本考案の原子力発電プラントの薬注制御装置を図１に示す一実施例により 説明すると，１が蒸気発生器，２がタービンで，蒸気発生器１とタービン２とが 蒸気供給系により接続され，タービン２と蒸気発生器１とが給水供給系により接 続されている。 Next, the chemical injection control device for a nuclear power plant according to the present invention will be explained using an embodiment shown in Fig. 1. To explain, 1 is a steam generator, 2 is a turbine, and steam generator 1 and turbine 2 are The turbine 2 and the steam generator 1 are connected by a water supply system. It is continued.
【０００９】 ３が復水器，４が給水ポンプ，９が流量計，５が給水ヒータで，これらの機器 ３，４，９，５が給水供給系に設けられている。 ６が薬注ポンプで，同薬注ポンプ６と薬注供給系が給水ポンプ４と流量計９と の間の給水系とが薬注供給系により接続されている。７が同薬注供給系に設けた 薬注ポンプ，８が制御器で，この制御器８が上記流量計９と上記薬注ポンプ７と に接続している。[0009] 3 is a condenser, 4 is a water supply pump, 9 is a flow meter, and 5 is a water supply heater. 3, 4, 9, and 5 are provided in the water supply system. 6 is a chemical injection pump, and the chemical injection pump 6 and the chemical injection supply system are connected to the water supply pump 4 and the flow meter 9. The water supply system between the two is connected by a chemical injection supply system. 7 was installed in the drug injection supply system. A chemical injection pump 8 is a controller, and this controller 8 is connected to the flow meter 9 and the chemical injection pump 7. is connected to.
【００１０】 次に前記図１に示す原子力発電プラントの薬注制御装置の作用を説明する。蒸 気発生器１で発生した蒸気をタービン２へ導き，ここで仕事をした蒸気を復水器 ３へ導いて，給水にし，次いで給水ポンプ４→流量計９→給水ヒータ５を経て蒸 気発生器１へ導き，ここで蒸気にして，再びタービン２へ導く。 このとき，給水供給系の給水の流量を流量計９により検出し，そのとき得られ た検出信号を制御器８へ送り，ここで得られた制御信号を薬注ポンプ７へ送って ，同薬注ポンプ７を制御することにより，２次系の水質管理のための薬品を薬注 タンク６→薬注ポンプ７→給水ポンプ４と流量計との間の給水系へ注入して，２ 次系の水質を管理する。0010 Next, the operation of the chemical injection control device for the nuclear power plant shown in FIG. 1 will be explained. steaming The steam generated in the air generator 1 is guided to the turbine 2, and the steam that has done work here is sent to the condenser. 3 for water supply, and then passes through the water supply pump 4 → flow meter 9 → water supply heater 5 to steam. The gas is guided to the gas generator 1, where it is made into steam, and then guided to the turbine 2 again. At this time, the flow rate of the water supply in the water supply system is detected by the flow meter 9, and the flow rate obtained at that time is detected. The detected signal is sent to the controller 8, and the control signal obtained here is sent to the chemical injection pump 7. , by controlling the same chemical injection pump 7, injects chemicals for water quality control in the secondary system. Inject into the water supply system between tank 6 → chemical injection pump 7 → water supply pump 4 and flow meter, and Manage the water quality of the secondary system.
【００１１】 そして薬注量の制御設定値を図３の状態に定めて，給水中に含まれている金属 酸化物の多いプラント運転初期（運転出力が低いプラント運転初期），図２に示 すように給水中の薬品濃度（ヒドラジン濃度）を高くして，金属酸化物の還元を 充分に行う。[0011] Then, set the control setting value of the chemical injection amount to the state shown in Figure 3, and measure the metal content in the water supply. The initial stage of plant operation with a large amount of oxides (early stage of plant operation with low operating output) is shown in Figure 2. The chemical concentration (hydrazine concentration) in the water supply is increased to reduce metal oxides. Do enough.
【００１２】0012
本考案の原子力発電プラントの薬注制御装置は前記のように蒸気発生器で発生 した蒸気をタービンへ導き，ここで仕事をした蒸気を復水器へ導いて，給水にし ，次いで給水ポンプ→給水ヒータを経て蒸気発生器へ導き，ここで蒸気にして， 再びタービンへ導く一方，薬品を薬注タンク→薬注ポンプ→給水供給系へ注入し て，２次系の水質を管理しているとき，薬注量の制御設定値を図３の状態に定め て，給水中に含まれている金属酸化物の多いプラント運転初期，図２に示すよう に給水中の薬品濃度を高くして，金属酸化物の還元を充分に行うので，蒸気発生 器の構造の健全性を長期間にわたり保持できる。 The chemical injection control device of the nuclear power plant of this invention generates chemical in the steam generator as mentioned above. The generated steam is led to a turbine, and the steam that has done work here is led to a condenser where it is used as water supply. , then the water is guided through the feed water pump → feed water heater to the steam generator, where it is turned into steam. While guiding the chemicals to the turbine again, the chemicals are injected into the chemical injection tank → chemical injection pump → water supply system. When managing the water quality of the secondary system, the control setting value of the chemical injection amount is set to the state shown in Figure 3. As shown in Figure 2, during the early stage of plant operation when the feed water contains a large amount of metal oxides. The concentration of chemicals in the water supply is increased to sufficiently reduce metal oxides, resulting in less steam generation. The structural integrity of the vessel can be maintained for a long period of time.
【提出日】平成４年６月２２日[Submission date] June 22, 1992
【手続補正１】[Procedural amendment 1]
【補正対象書類名】明細書[Name of document to be amended] Specification
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【０００１】0001
本考案は，原子力発電プラントの薬注制御装置に関するものである。 This invention relates to a chemical injection control device for a nuclear power plant.
【０００２】0002
原子力発電プラントでは，蒸気発生器で発生した蒸気をタービンへ導き，ここ で仕事をした蒸気を復水器へ導いて，給水にし，次いで給水ポンプ→給水ヒータ を経て蒸気発生器へ導き，ここで蒸気にして，再びタービンへ導く。 このとき，２次系の水質管理のための薬品を薬注タンク→薬注ポンプ→給水供 給系に設けた給水ポンプの下流側の給水供給系へ注入して，２次系の水質を管理 している。 In a nuclear power plant, steam generated in a steam generator is guided to a turbine, where it is The steam that has worked in It is then led to a steam generator, where it is turned into steam and then led back to the turbine. At this time, chemicals for secondary water quality control are transferred from the chemical dosing tank to the chemical dosing pump to the water supply. Controls water quality in the secondary system by injecting water into the water supply system downstream of the water pump installed in the supply system. are doing.
【０００３】 その際，図４に示すように給水中の薬品濃度を，運転出力に関係なく，一定に 保持している。また図５に示すように薬注量の制御設定値を，給水流量に比例さ せている。0003 At that time, as shown in Figure 4, the concentration of chemicals in the water supply is kept constant regardless of the operating output. keeping. In addition, as shown in Figure 5, the control setting value for the chemical injection amount is set in proportion to the water supply flow rate. It's set.
【０００４】0004
前記従来の原子力発電プラントの薬注制御装置には，次の問題があった。 即ち，水質管理のための注入薬品（還元剤）としてヒドラジンが用いられており ，これにより，給水中に含まれている金属酸化物の還元を図っているが，金属酸 化物は，金属が空気に触れた場合に生成し易いため，プラント建設時やプラント 開放点検時後のプラント初期運転時には，給水中に含まれている金属酸化物の濃 度が高くなり，そのため，それを還元するヒドランジンの濃度を高くする必要が ある。 The conventional chemical injection control device for a nuclear power plant has the following problems. In other words, hydrazine is used as an injection chemical (reducing agent) for water quality control. This is intended to reduce the metal oxides contained in the water supply, but the metal oxides Chemicals are easily generated when metals come into contact with air, so they are During initial plant operation after an overhaul inspection, concentrations of metal oxides contained in the feed water are detected. Therefore, it is necessary to increase the concentration of hydrandine to reduce it. be.
【０００５】 しかし前記従来の原子力発電プラントの薬注制御装置では，給水中の薬品濃度 を，運転出力に関係なく，一定に保持しており，給水中の金属酸化物が充分に還 元されないまま，蒸気発生器へ持ち込まれて，蒸気発生器で腐食等が発生し易く なるという問題があった。 本考案は前記の問題点に鑑み提案するものであり，その目的とする処は，蒸気 発生器の構造の健全性を長期間にわたり保持できる原子力発電プラントの薬注制 御装置を提供しようとする点にある。[0005] However, with the chemical injection control device of the conventional nuclear power plant mentioned above, the chemical concentration in the feed water is is maintained constant regardless of the operating output, ensuring that metal oxides in the water supply are sufficiently returned. If it is brought into the steam generator without being recovered, corrosion etc. may easily occur in the steam generator. There was a problem. This invention is proposed in view of the above problems, and its purpose is to Chemical injection control for nuclear power plants that maintains the structural integrity of the generator over long periods of time The point is that we are trying to provide control equipment.
【０００６】[0006]
上記の目的を達成するために，本考案の原子力発電プラントの薬注制御装置は ，原子力発電プラントにおいて、２次系の水質管理のために注入する薬品の薬注 濃度をプラントの運転出力に応じて変化させることを特徴としている。 In order to achieve the above objectives, the nuclear power plant chemical injection control device of the present invention is , Injection of chemicals injected for secondary water quality control in nuclear power plants. It is characterized by changing the concentration according to the operating output of the plant.
【０００７】[0007]
本考案の原子力発電プラントの薬注制御装置は前記のように構成されており， 蒸気発生器で発生した蒸気をタービンへ導き，ここで仕事をした蒸気を復水器へ 導いて，給水にし，次いで給水ポンプ→給水ヒータを経て蒸気発生器へ導き，こ こで蒸気にして，再びタービンへ導く一方，薬品を薬注タンク→薬注ポンプ→給 水供給系へ注入して，２次系の水質を管理しているときに，薬注量の制御設定値 を図３の実線の状態に定めて，給水中に含まれている金属酸化物の多いプラント 運転初期，図２に示すように給水中の薬品濃度を高くして，金属酸化物の還元を 充分に行う。 The chemical injection control device for a nuclear power plant according to the present invention is configured as described above. The steam generated in the steam generator is guided to the turbine, and the steam that has done work here is sent to the condenser. The water is then introduced to the steam generator via the feed water pump → feed water heater. This converts it into steam and guides it to the turbine again, while the chemicals are transferred from the chemical dosing tank to the chemical dosing pump to the supply. When controlling the water quality of the secondary system by injecting it into the water supply system, the control setting value for the amount of chemical injection is is set to the state shown by the solid line in Figure 3. At the beginning of operation, as shown in Figure 2, the concentration of chemicals in the water supply was increased to reduce metal oxides. Do enough.
【０００８】[0008]
次に本考案の原子力発電プラントの薬注制御装置を図１に示す一実施例により 説明すると，１が蒸気発生器，２がタービンで，蒸気発生器１とタービン２とが 蒸気供給系により接続され，タービン２と蒸気発生器１とが給水供給系により接 続されている。 Next, the chemical injection control device for a nuclear power plant according to the present invention will be explained using an embodiment shown in Fig. 1. To explain, 1 is a steam generator, 2 is a turbine, and steam generator 1 and turbine 2 are The turbine 2 and the steam generator 1 are connected by a water supply system. It is continued.
【０００９】 ３が復水器，４が給水ポンプ，９が流量計，５が給水ヒータで，これらの機器 ３，４，９，５が給水供給系に設けられている。 ６が薬注ポンプで，同薬注ポンプ６と薬注供給系が給水ポンプ４と流量計９と の間の給水系とが薬注供給系により接続されている。７が同薬注供給系に設けた 薬注ポンプ，８が制御器で，この制御器８が上記流量計９と上記薬注ポンプ７と に接続している。[0009] 3 is a condenser, 4 is a water supply pump, 9 is a flow meter, and 5 is a water supply heater. 3, 4, 9, and 5 are provided in the water supply system. 6 is a chemical injection pump, and the chemical injection pump 6 and the chemical injection supply system are connected to the water supply pump 4 and the flow meter 9. The water supply system between the two is connected by a chemical injection supply system. 7 was installed in the drug injection supply system. A chemical injection pump 8 is a controller, and this controller 8 is connected to the flow meter 9 and the chemical injection pump 7. is connected to.
【００１０】 次に前記図１に示す原子力発電プラントの薬注制御装置の作用を説明する。蒸 気発生器１で発生した蒸気をタービン２へ導き，ここで仕事をした蒸気を復水器 ３へ導いて，給水にし，次いで給水ポンプ４→流量計９→給水ヒータ５を経て蒸 気発生器１へ導き，ここで蒸気にして，再びタービン２へ導く。 このとき，給水供給系の給水の流量を流量計９により検出し，そのとき得られ た検出信号を制御器８へ送り，ここで得られた制御信号を薬注ポンプ７へ送って ，同薬注ポンプ７を制御することにより，２次系の水質管理のための薬品を薬注 タンク６→薬注ポンプ７→給水ポンプ４と流量計との間の給水系へ注入して，２ 次系の水質を管理する。0010 Next, the operation of the chemical injection control device for the nuclear power plant shown in FIG. 1 will be explained. steaming The steam generated in the air generator 1 is guided to the turbine 2, and the steam that has done work here is sent to the condenser. 3 for water supply, and then passes through the water supply pump 4 → flow meter 9 → water supply heater 5 to steam. The gas is guided to the gas generator 1, where it is made into steam, and then guided to the turbine 2 again. At this time, the flow rate of the water supply in the water supply system is detected by the flow meter 9, and the flow rate obtained at that time is detected. The detected signal is sent to the controller 8, and the control signal obtained here is sent to the chemical injection pump 7. , by controlling the same chemical injection pump 7, injects chemicals for water quality control in the secondary system. Inject into the water supply system between tank 6 → chemical injection pump 7 → water supply pump 4 and flow meter, and Manage the water quality of the secondary system.
【００１１】 そして薬注量の制御設定値を図３の実線の状態に定めて，給水中に含まれてい る金属酸化物の多いプラント運転初期（運転出力が低いプラント運転初期），図 ２に示すように給水中の薬品濃度（ヒドラジン濃度）を高くして，金属酸化物の 還元を充分に行う。 薬注濃度をプラント運転出力に応じて変化させる方法として具体的には，図３ に示すように制御設定値（実線）を従来の制御設定値（破線）に対して変えてあ る。即ち，プラントの運転出力を給水流量信号により代表させ，この給水流量を 制御器８へ入力し，制御器８では，給水流量信号に応じて薬注量の制御設定値を 図３のように変化させるために関数発生器等を用いる。[0011] Then, set the control setting value of the chemical injection amount to the state shown by the solid line in Figure 3, and Early stage of plant operation with a lot of metal oxides (early stage of plant operation with low operating output), Fig. As shown in 2, by increasing the chemical concentration (hydrazine concentration) in the water supply, the concentration of metal oxides can be reduced. Give back enough. Specifically, Fig. 3 shows a method for changing the chemical injection concentration according to the plant operating output. As shown in the figure, the control setting value (solid line) is changed from the conventional control setting value (broken line). Ru. In other words, the operating output of the plant is represented by the water supply flow rate signal, and this water supply flow rate is expressed as The input is input to the controller 8, and the controller 8 sets the control setting value for the chemical injection amount according to the water supply flow rate signal. A function generator or the like is used to make the changes as shown in FIG.
【００１２】0012
本考案の原子力発電プラントの薬注制御装置は前記のように蒸気発生器で発生 した蒸気をタービンへ導き，ここで仕事をした蒸気を復水器へ導いて，給水にし ，次いで給水ポンプ→給水ヒータを経て蒸気発生器へ導き，ここで蒸気にして， 再びタービンへ導く一方，薬品を薬注タンク→薬注ポンプ→給水供給系へ注入し て，２次系の水質を管理しているとき，薬注量の制御設定値を図３の実線の状態 に定めて，給水中に含まれている金属酸化物の多いプラント運転初期，図２に示 すように給水中の薬品濃度を高くして，金属酸化物の還元を充分に行うので，蒸 気発生器の構造の健全性を長期間にわたり保持できる。 The chemical injection control device of the nuclear power plant of this invention generates chemical in the steam generator as mentioned above. The generated steam is led to a turbine, and the steam that has done work here is led to a condenser where it is used as water supply. , then the water is guided through the feed water pump → feed water heater to the steam generator, where it is turned into steam. While guiding the chemicals to the turbine again, the chemicals are injected into the chemical injection tank → chemical injection pump → water supply system. When controlling the water quality of the secondary system, the control setting value of the chemical injection amount is set to the state shown by the solid line in Figure 3. In the early stage of plant operation, when the water supply contains a large amount of metal oxides, as shown in Figure 2. The concentration of chemicals in the water supply is increased to ensure sufficient reduction of metal oxides. The structural integrity of the gas generator can be maintained for a long period of time.
【図１】本考案に係わる原子力発電プラントの薬注制御
装置の一実施例を示す系統図である。FIG. 1 is a system diagram showing an embodiment of a chemical injection control device for a nuclear power plant according to the present invention.
【図２】同薬注制御装置の作用説明図である。FIG. 2 is an explanatory diagram of the action of the drug injection control device.
【図３】同薬注制御装置の作用説明図である。FIG. 3 is an explanatory diagram of the action of the drug injection control device.
【図４】従来の原子力発電プラントの薬注制御装置の作
用説明図である。FIG. 4 is an explanatory diagram of the operation of a conventional chemical injection control device for a nuclear power plant.
【図５】同薬注制御装置の作用説明図である。FIG. 5 is an explanatory diagram of the operation of the drug injection control device.
１ 蒸気発生器 ２ タービン ３ 復水器 ４ 給水ポンプ ５ 給水ヒータ ６ 薬注ポンプ ７ 薬注ポンプ ８ 制御器 ９ 流量計 1 Steam generator 2 turbine 3 Condenser 4 Water pump 5 Water supply heater 6 Medication pump 7 Medication pump 8 Controller 9 Flowmeter
─────────────────────────────────────────────────────
──────────────────────────────────────────────── ───
【手続補正書】[Procedural amendment]
【提出日】平成４年６月２２日[Submission date] June 22, 1992
【手続補正１】[Procedural amendment 1]
【補正対象書類名】明細書[Name of document to be amended] Specification
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction details]
【書類名】 明細書[Document name] Statement
【考案の名称】 原子力発電プラントの薬注制御
装置[Name of the invention] Chemical injection control device for nuclear power plants
【実用新案登録請求の範囲】[Scope of utility model registration request]
【図面の簡単な説明】[Brief explanation of drawings]
【図１】本考案に係わる原子力発電プラントの薬注制御
装置の一実施例を示す系統図である。FIG. 1 is a system diagram showing an embodiment of a chemical injection control device for a nuclear power plant according to the present invention.
【図２】同薬注制御装置の作用説明図である。FIG. 2 is an explanatory diagram of the action of the drug injection control device.
【図３】同薬注制御装置の作用説明図である。FIG. 3 is an explanatory diagram of the action of the drug injection control device.
【図４】従来の原子力発電プラントの薬注制御装置の作
用説明図である。FIG. 4 is an explanatory diagram of the operation of a conventional chemical injection control device for a nuclear power plant.
【図５】同薬注制御装置の作用説明図である。FIG. 5 is an explanatory diagram of the operation of the drug injection control device.
【符号の説明】
１ 蒸気発生器
２ タービン
３ 復水器
４ 給水ポンプ
５ 給水ヒータ
６ 薬注ポンプ
７ 薬注ポンプ
８ 制御器
９ 流量計
─────────────────────────────────────────────────────
[Explanation of symbols] 1 Steam generator 2 Turbine 3 Condenser 4 Water supply pump 5 Water supply heater 6 Chemical injection pump 7 Chemical injection pump 8 Controller 9 Flow meter ──────────────── ──────────────────────────────────────
【手続補正書】[Procedural amendment]
【提出日】平成４年６月２２日[Submission date] June 22, 1992
【手続補正１】[Procedural amendment 1]
【補正対象書類名】図面[Name of document to be corrected] Drawing
【補正対象項目名】全図[Correction target item name] Full map
【補正方法】変更[Correction method] Change
【補正内容】[Correction details]
【図１】 [Figure 1]
【図２】 [Figure 2]
【図３】 [Figure 3]
【図４】 [Figure 4]
【図５】 [Figure 5]
Claims (1)
給系に設けた薬注供給系と，同薬注供給系に設けた薬注
ポンプと，上記給水供給系に設けた流量計と，同流量計
からの検出信号に基づいて上記薬注ポンプを制御する制
御器とを具えていることを特徴とした原子力発電プラン
トの薬注制御装置。[Claim 1] A chemical injection supply system provided in the water supply system leading from the turbine to the steam generator, a chemical injection pump provided in the chemical injection supply system, a flow meter provided in the water supply system, and the same flow rate. A chemical injection control device for a nuclear power plant, comprising: a controller that controls the chemical injection pump based on a detection signal from the meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991033085U JPH04127595U (en) | 1991-05-13 | 1991-05-13 | Nuclear power plant chemical injection control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991033085U JPH04127595U (en) | 1991-05-13 | 1991-05-13 | Nuclear power plant chemical injection control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04127595U true JPH04127595U (en) | 1992-11-20 |
Family
ID=31915852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991033085U Withdrawn JPH04127595U (en) | 1991-05-13 | 1991-05-13 | Nuclear power plant chemical injection control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04127595U (en) |
-
1991
- 1991-05-13 JP JP1991033085U patent/JPH04127595U/en not_active Withdrawn
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