JP2000356479A - Controller for condenser cooling water system - Google Patents
Controller for condenser cooling water systemInfo
- Publication number
- JP2000356479A JP2000356479A JP11164702A JP16470299A JP2000356479A JP 2000356479 A JP2000356479 A JP 2000356479A JP 11164702 A JP11164702 A JP 11164702A JP 16470299 A JP16470299 A JP 16470299A JP 2000356479 A JP2000356479 A JP 2000356479A
- Authority
- JP
- Japan
- Prior art keywords
- filter device
- cooling water
- condenser
- cleaning
- filter
- 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
Links
Landscapes
- Filtration Of Liquid (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、冷却水を復水器冷
却水系統を通して復水器を循環させる復水器冷却水系統
を洗浄する制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for cleaning a condenser cooling water system in which cooling water is circulated through a condenser cooling water system.
【０００２】[0002]
【従来の技術】一般に、復水器は蒸気タービンで仕事を
終えた蒸気を冷却水と熱交換して凝縮するものである。
通常、冷却水としては海水が使用される。海水は、スク
リーンを通って比較的大きな塵埃が除去され、復水器冷
却水系統により復水器に導入され、復水器で熱交換され
た海水は海に戻されるようになっている。2. Description of the Related Art Generally, a condenser condenses steam that has completed its work in a steam turbine by exchanging heat with cooling water.
Usually, seawater is used as cooling water. The seawater passes through a screen to remove relatively large dust, is introduced into the condenser by a condenser cooling water system, and the seawater heat-exchanged by the condenser is returned to the sea.
【０００３】図４は、そのような復水器冷却水系統の構
成図である。図４では、冷却水の流れを逆にして復水器
を洗浄する逆洗浄機能を有したものであり、Ａ系および
Ｂ系の２系統の復水器冷却水系統を示している。FIG. 4 is a configuration diagram of such a condenser cooling water system. FIG. 4 shows a condenser cooling water system having a reverse washing function of washing the condenser by reversing the flow of the cooling water, and has two systems, an A system and a B system.
【０００４】それぞれのＡ系およびＢ系の復水器冷却水
系統においては、循環水ポンプ１ａ、１ｂからの冷却水
は、復水器入口弁２ａ、２ｂを介してフィルタ装置３
ａ、３ｂに導かれ、このフィルタ装置３ａ、３ｂでスク
リーンで除去できなかった固形物を捕獲するようになっ
ている。フィルタ装置３ａ、３ｂで固形物が除去された
冷却水は復水器４の冷却管４ａ、４ｂに導かれ、蒸気と
熱交換して復水器出口弁５ａ、５ｂを介して放出され
る。In each of the condenser A and condenser B cooling water systems, the cooling water from the circulating water pumps 1a and 1b passes through the condenser inlet valves 2a and 2b to filter the filter 3
The filter devices 3a and 3b capture solids that cannot be removed by the screen. The cooling water from which solids have been removed by the filter devices 3a, 3b is guided to the cooling pipes 4a, 4b of the condenser 4, exchanges heat with steam, and is discharged through the condenser outlet valves 5a, 5b.
【０００５】フィルタ装置３ａ、３ｂのフィルタ１１
ａ、１１ｂには保護用のバイパス弁６ａ、６ａ’、６
ｂ、６ｂ’およびフィルタ１１ａ、１１ｂの差圧を検出
する差圧検出器７ａ、７ｂが設けられている。また、フ
ィルタ１１ａ、１１ｂで捕獲された固形物はブロー弁８
ａ，８ｂを介して放出され、逆洗連絡弁９ａ、９ｂは、
復水器４の逆洗浄運転の際に操作される。制御装置１０
は、この復水器冷却水系統の運転制御を行うものであ
り、通常運転、フィルタ装置３ａ、３ｂの洗浄運転、復
水器冷却水系統の逆洗浄運転、さらにはフィルタ１１
ａ、１１ｂの保護操作を行う。[0005] The filter 11 of the filter device 3a, 3b
a and 11b have protective bypass valves 6a, 6a 'and 6
b, 6b 'and differential pressure detectors 7a, 7b for detecting the differential pressure between the filters 11a, 11b. The solid matter captured by the filters 11a and 11b is
a, 8b, and the backwash communication valves 9a, 9b
It is operated during the reverse cleaning operation of the condenser 4. Control device 10
Controls the operation of the condenser cooling water system, and includes a normal operation, a washing operation of the filter devices 3a and 3b, a back washing operation of the condenser cooling water system, and a filter 11
The protection operations of a and 11b are performed.
【０００６】通常運転時には、蒸気タ−ビンで仕事を終
えた蒸気を復水させるための冷却水を循環水ポンプ１
ａ、１ｂにより吸上げ、復水器入口弁２ａ、２ｂを介し
て、フィルタ装置３ａ、３ｂを経由し冷却管４ａ，４ｂ
へ通水し、復水器出口弁５ａ、５ｂを経て系外へ放水す
る。At the time of normal operation, a circulating water pump 1 is used to supply cooling water for condensing steam which has finished work in the steam turbine.
a, 1b, cooling condensers 4a, 4b via condenser inlet valves 2a, 2b, and filter devices 3a, 3b.
Through the condenser outlet valves 5a and 5b to discharge water outside the system.
【０００７】また、洗浄運転は、差圧検出器７ａ、７ｂ
で検出されるフィルタ１１ａ、１１ｂの差圧が所定値以
上に達したとき、または、タイマーにより所定の時間間
隔で行われ、フィルタ１１ａ、１１ｂで捕獲した固形物
をブロ−弁８ａ、８ｂを介して系外へ排出ブロ−させ
る。復水器冷却水系統の逆洗浄運転は、運転員の指令に
より行われ、フィルタ１１ａ、１１ｂの保護操作は、差
圧検出器７ａ、７ｂで検出されるフィルタ１１ａ、１１
ｂの差圧が所定値を超え過大になった場合に、バイパス
弁６ａ、６ａ’、６ｂ、６ｂ’を開くことにより行われ
る。In the cleaning operation, the differential pressure detectors 7a, 7b
When the pressure difference between the filters 11a and 11b detected by the filter reaches a predetermined value or more, or at a predetermined time interval by a timer, the solid matter captured by the filters 11a and 11b is passed through the blow valves 8a and 8b. To blow out the system. The backwashing operation of the condenser cooling water system is performed according to a command of an operator, and the protection operation of the filters 11a and 11b is performed by the filters 11a and 11b detected by the differential pressure detectors 7a and 7b.
This is performed by opening the bypass valves 6a, 6a ', 6b, 6b' when the pressure difference b exceeds a predetermined value and becomes excessive.
【０００８】また、バイパス弁６ａ、６ａ’、６ｂ、６
ｂ’は、フィルタ装置３ａ、３ｂのフィルタ装置３ａ、
３ｂの洗浄運転完了時に開閉操作が行われ、この開閉操
作により、バイパス弁６ａ、６ａ’、６ｂ、６ｂ’を含
むフィルタ装置バイパスラインの水の腐敗、固形物の停
滞あるいは固着を防止するようにしている。The bypass valves 6a, 6a ', 6b, 6
b ′ is the filter device 3a of the filter device 3a, 3b,
When the washing operation of the filter 3b is completed, an opening / closing operation is performed. By this opening / closing operation, it is possible to prevent water decay of the filter device bypass line including the bypass valves 6a, 6a ', 6b, 6b' and stagnation or sticking of solids. ing.
【０００９】図５は、フィルタ装置３ａ、３ｂの内部の
構造の説明図である。フィルタ装置３は、フィルタケー
シング１２内にフィルタ支持板１３と流路分岐板１４と
を有し、また冷却水に含まれる固形物を捕獲するための
フィルタエレメント１５を有している。さらに、分岐流
路の開閉機能を有するフラップ１６を有しており、洗浄
運転の際には、このフラップ１６の閉により固形物がブ
ロー弁８を介して放出される。FIG. 5 is an explanatory diagram of the internal structure of the filter devices 3a and 3b. The filter device 3 has a filter support plate 13 and a flow path branch plate 14 in a filter casing 12, and has a filter element 15 for capturing solid matter contained in cooling water. Further, it has a flap 16 having a function of opening and closing the branch flow path. In the cleaning operation, the solid matter is discharged via the blow valve 8 by closing the flap 16.
【００１０】洗浄運転の際には、制御装置１０に予めプ
ログラムされているシーケンスにより、フラップ１６が
順次開閉制御される。たとえば、フィルタエレメント１
５’のフラップ１６’が閉じられブロー弁８が開である
とすると、フィルタエレメント１５’の冷却水導入側
（図５の下側）の圧力が下がりフィルタエレメント１
５’の洗浄運転が行われる。図中の矢印は、その場合の
フィルタ装置３内の水の流れ方向を示している。これに
より、フラップ１６’が閉じられたフィルタエレメント
１５’には逆洗水が流れ、フィルタエレメント１５’で
捕獲された固形物がその逆洗水と共にブロー弁８を経由
して系外に放出される。なお、この場合、フラップ１６
が開いているフィルタエレメント１５は通常のフィルタ
機能で運転されることになる。During the cleaning operation, the flaps 16 are sequentially controlled to open and close according to a sequence programmed in the control device 10 in advance. For example, filter element 1
Assuming that the flap 16 'of 5' is closed and the blow valve 8 is open, the pressure on the cooling water introduction side (the lower side in Fig. 5) of the filter element 15 'decreases, and the filter element 1'
The washing operation of 5 'is performed. Arrows in the figure indicate the flow direction of water in the filter device 3 in that case. As a result, backwash water flows through the filter element 15 'with the flap 16' closed, and the solid matter captured by the filter element 15 'is discharged out of the system together with the backwash water via the blow valve 8. You. In this case, the flap 16
Is opened, the filter element 15 is operated by a normal filter function.
【００１１】次に、復水器４の冷却管４ａ，４ｂの冷却
水の流れ方向を変えることによる逆洗浄運転について説
明する。図６は、Ａ系の復水器冷却水系統が逆洗浄運転
中で、Ｂ系列の復水器冷却水系統は通常の運転状態を維
持しているときの状態説明図である。Next, the backwashing operation by changing the flow direction of the cooling water in the cooling pipes 4a and 4b of the condenser 4 will be described. FIG. 6 is a state explanatory diagram when the condenser cooling water system of the system A is performing the backwashing operation and the condenser cooling water system of the system B maintains the normal operation state.
【００１２】図６に示した逆洗浄運転状態では、Ａ系の
復水器入口弁２ａ、復水器出口弁７ａを閉じ、Ａ系およ
びＢ系の双方の逆洗連絡弁９ａ、９ｂを開とする。ま
ず、循環水ポンプ１ａおよび循環水ポンプ１ｂからの冷
却水は、復水器入口弁２ｂを通り、冷却水の一部はフィ
ルタ装置３ｂを介して復水器４の冷却管４ｂに供給さ
れ、一方、残りの冷却水は逆洗連絡弁９ｂを通り復水器
４の冷却管４ａに供給される。これにより、復水器４の
冷却管４ａの冷却水の流れは、通常運転時の逆方法の流
れとなる。In the backwash operation state shown in FIG. 6, the condenser inlet valve 2a and the condenser outlet valve 7a of the A system are closed, and the backwash communication valves 9a and 9b of both the A system and the B system are opened. And First, the cooling water from the circulating water pump 1a and the circulating water pump 1b passes through the condenser inlet valve 2b, and a part of the cooling water is supplied to the cooling pipe 4b of the condenser 4 through the filter device 3b. On the other hand, the remaining cooling water is supplied to the cooling pipe 4a of the condenser 4 through the backwash communication valve 9b. As a result, the flow of the cooling water in the cooling pipe 4a of the condenser 4 is the reverse of the flow during the normal operation.
【００１３】復水器４の冷却管４ａを通った冷却水は、
フィルタ装置３ａに逆方向から流れ込み、フィルタ装置
１３ａのフィルタ１１ａで捕獲された固形物を冷却水と
共に逆連絡弁９ａおよび復水器出口弁５ｂを介して放出
する。一方、復水器４ｂの冷却管４ｂを通った冷却水
は、復水器出口弁５ｂを介して放出する。The cooling water passing through the cooling pipe 4a of the condenser 4 is
It flows into the filter device 3a from the opposite direction, and discharges solid matter captured by the filter 11a of the filter device 13a together with the cooling water through the reverse connection valve 9a and the condenser outlet valve 5b. On the other hand, the cooling water that has passed through the cooling pipe 4b of the condenser 4b is discharged through the condenser outlet valve 5b.
【００１４】つまり、Ａ系の冷却管４ａの冷却水の流れ
方向を変え、復水器４の冷却管４ａおよびフィルタ装置
３ａの洗浄を行い、フィルタ装置３ａに付着している固
形物を系外に排出する。このとき、Ａ系のバイパス弁６
ａ，６ａ’は閉となっている。That is, the flow direction of the cooling water in the cooling pipe 4a of the A system is changed, the cooling pipe 4a of the condenser 4 and the filter device 3a are washed, and solid matter adhering to the filter device 3a is removed from the system. To be discharged. At this time, the A-system bypass valve 6
a, 6a 'are closed.
【００１５】[0015]
【発明が解決しようとする課題】しかしながら、従来の
制御装置では、フィルタ１１ａ、１１ｂに過大な差圧が
生じた場合には、保護動作によりバイパス弁６ａ、６
ａ’、６ｂ、６ｂ’が開するので、復水器４の冷却管４
ａ、４ｂに固形物が流入することになる。特に、循環水
ポンプ１ａ、１ｂの起動時には、多量の固形物がフィル
タ装置３ａ、３ｂへ流れ込み、急速にフィルタ装置３
ａ、３ｂのフィルタ１１ａ、１１ｂに目詰りが生じる。
この場合には、復水器４の冷却管４ａ、４ｂに固形物が
流入することから復水器４の冷却性能が低下し、さらに
は、冷却管４ａ、４ｂが損傷する危険もある。つまり、
場合によっては、復水器４の冷却管４ａ、４ｂの径より
大きな固形物が流入した場合には、冷却管４ａ、４ｂと
フィルタ装置３ａ、３ｂとの間の循環水配管ラインに冷
却水が停滞し、その固形物を系外に排出できなくなる原
因ともなる。However, in the conventional control device, when an excessive differential pressure is generated in the filters 11a and 11b, the bypass valves 6a and 6b are protected by a protection operation.
a ′, 6b, 6b ′ open, the cooling pipe 4 of the condenser 4
Solids will flow into a and 4b. In particular, when the circulating water pumps 1a and 1b are started, a large amount of solids flows into the filter devices 3a and 3b, and rapidly flows.
The filters 11a and 11b a and 3b are clogged.
In this case, since solids flow into the cooling pipes 4a and 4b of the condenser 4, the cooling performance of the condenser 4 is reduced, and there is a risk that the cooling pipes 4a and 4b may be damaged. That is,
In some cases, when a solid larger than the diameter of the cooling pipes 4a, 4b of the condenser 4 flows, cooling water is supplied to the circulating water pipe line between the cooling pipes 4a, 4b and the filter devices 3a, 3b. This causes stagnation, and the solids cannot be discharged out of the system.
【００１６】また、フィルタ装置３ａ、３ｂの洗浄運転
完了時に、フィルタ装置バイパスラインの水の腐敗、固
形物の停滞や固着を防止するためにバイパス弁６ａ、６
ａ’、６ｂ、６ｂ’を開閉するようにしているが、その
際にも、復水器４の冷却管４ａ、４ｂへ固形物を流入さ
せることになる。When the cleaning operation of the filter devices 3a and 3b is completed, the bypass valves 6a and 6b are provided in order to prevent water decay of the filter device bypass line and stagnation and sticking of solids.
Although a ', 6b and 6b' are opened and closed, solids also flow into the cooling pipes 4a and 4b of the condenser 4 at that time.
【００１７】本発明の目的は、復水器の冷却管に固形物
が流入することを防止できる復水器冷却水系統の制御装
置を提供することである。An object of the present invention is to provide a control device for a condenser cooling water system which can prevent solids from flowing into a condenser cooling pipe.
【００１８】[0018]
【課題を解決する手段】請求項１の発明に係わる復水器
冷却水系統の制御装置は、蒸気タ−ビンプラントの復水
器冷却管に循環水ポンプからフィルタ装置を介して複数
の復水器冷却水系統の各々の系統に冷却水を供給する通
常運転手段と、前記フィルタ装置の前後差圧が所定値を
超えたときそのフィルタ装置を洗浄する洗浄運転手段
と、前記フィルタ装置の前後差圧が過大となったときそ
のフィルタ装置のバイパスラインのバイパス弁を開く保
護操作手段とを備えた復水器冷却水系統の制御装置にお
いて、前記洗浄運転手段は、前記循環水ポンプが起動さ
れたときに前記フィルタ装置の洗浄運転を行うことを特
徴とする。According to a first aspect of the present invention, there is provided a control system for a condenser cooling water system, comprising a plurality of condensers connected to a condenser cooling pipe of a steam turbine plant from a circulating water pump via a filter device. Normal operation means for supplying cooling water to each system of the filter cooling water system, cleaning operation means for cleaning the filter device when the differential pressure across the filter device exceeds a predetermined value, And a protection operation means for opening a bypass valve of a bypass line of the filter device when the pressure becomes excessive, in the control device of the condenser cooling water system, wherein the washing operation means is configured such that the circulating water pump is started. A cleaning operation of the filter device is sometimes performed.
【００１９】請求項１の発明に係わる復水器冷却水系統
の制御装置では、通常運転手段から循環水ポンプの起動
指令が出力されたとき、洗浄運転手段は、フィルタ装置
の洗浄運転を行う。また、通常運転中において、フィル
タ装置の前後差圧が所定値を超えたときは、洗浄運転手
段はそのフィルタ装置を洗浄する。In the control device for the condenser cooling water system according to the first aspect of the present invention, when the start command of the circulating water pump is output from the normal operation means, the cleaning operation means performs the cleaning operation of the filter device. Further, when the differential pressure across the filter device exceeds a predetermined value during the normal operation, the cleaning operation means cleans the filter device.
【００２０】請求項２の発明に係わる復水器冷却水系統
の制御装置は、請求項１の発明において、前記洗浄運転
手段は、前記循環水ポンプが起動されたときに前記フィ
ルタ装置の洗浄運転を開始し、所定の時間経過後または
逆洗浄運転が開始されたときは洗浄運転を終了すること
を特徴とする。According to a second aspect of the present invention, in the control device of the condenser cooling water system according to the first aspect of the present invention, the cleaning operation means includes a cleaning operation of the filter device when the circulating water pump is started. The cleaning operation is terminated after a predetermined time has elapsed or when the reverse cleaning operation is started.
【００２１】請求項２の発明に係わる復水器冷却水系統
の制御装置では、請求項１の発明の作用に加え、洗浄運
転手段は、循環水ポンプが起動されたときにフィルタ装
置の洗浄運転を開始する。これにより、循環水ポンプの
起動時に固形物が多量に発生することに対して発生する
フィルタ装置の前後差圧を抑制する。洗浄運転の所定の
時間は予めフィルタ装置の清浄度が保てる時間を設定す
る。また、そのフィルタ装置の逆洗浄運転が開始された
ときは洗浄運転を終了する。In the control device for the condenser cooling water system according to the second aspect of the present invention, in addition to the operation of the first aspect of the present invention, the cleaning operation means includes a cleaning operation of the filter device when the circulating water pump is started. To start. This suppresses the differential pressure across the filter device that occurs when a large amount of solid matter is generated when the circulating water pump is started. The predetermined time for the cleaning operation is set in advance to a time during which the cleanliness of the filter device can be maintained. When the reverse cleaning operation of the filter device is started, the cleaning operation ends.
【００２２】請求項３の発明に係わる復水器冷却水系統
の制御装置は、請求項１または請求項２の発明におい
て、前記複数の復水器冷却水系統のうち一部の系統に逆
方向に冷却水を流す逆洗浄運転を行う場合の逆洗浄運転
手段を設けたことを特徴とする。According to a third aspect of the present invention, there is provided the control device for the condenser cooling water system according to the first or second aspect of the present invention, wherein a control system is provided in which a part of the plurality of condenser cooling water systems has a reverse direction. A backwashing operation means for performing a backwashing operation in which cooling water is supplied.
【００２３】請求項３の発明に係わる復水器冷却水系統
の制御装置では、請求項１または請求項２の発明の作用
に加え、逆洗浄運転を行う機能を有した復水器冷却水系
統である場合に同様に洗浄運転を行う。一部の系統が逆
洗浄運転中であるときも通常運転中の復水器冷却水系統
に対して洗浄運転を行う。In the control device for the condenser cooling water system according to the third aspect of the present invention, in addition to the operation of the first or second aspect of the present invention, the condenser cooling water system having a function of performing a backwashing operation. In the case of, the washing operation is performed similarly. Even when a part of the system is in the backwashing operation, the washing operation is performed on the condenser cooling water system in the normal operation.
【００２４】請求項４の発明に係わる復水器冷却水系統
の制御装置は、請求項３の発明において、前記保護操作
手段は、前記逆洗浄運転が開始されたときは、その逆洗
浄運転が行われるフィルタ装置のバイパスラインのバイ
パス弁を開くことを特徴とする。According to a fourth aspect of the present invention, there is provided the condenser cooling water system control device according to the third aspect of the present invention, wherein the protection operation means is configured such that when the back washing operation is started, the back washing operation is started. The bypass valve of the bypass line of the filter device to be performed is opened.
【００２５】請求項４の発明に係わる復水器冷却水系統
の制御装置では、請求項３の発明の作用に加え、逆洗浄
運転が開始されたときは、その逆洗浄運転が行われるフ
ィルタ装置のバイパスラインのバイパス弁を開き、バイ
パスラインに滞留する冷却水を排出し新たな冷却水を注
入すると伴に、バイパス弁、フィルタ装置から復水器間
における固形物を排除する。In the control device for the condenser cooling water system according to the fourth aspect of the present invention, in addition to the function of the third aspect of the invention, when the backwashing operation is started, the filter device performs the backwashing operation. By opening the bypass valve of the bypass line, the cooling water remaining in the bypass line is discharged and new cooling water is injected, and the solid matter between the condenser and the bypass valve and the filter device is removed.
【００２６】請求項５に係わる復水器冷却水系統の制御
装置は、請求項１乃至請求項４のいずれか１項の発明に
おいて、前記洗浄運転手段は、前記フィルタ装置の前後
差圧の所定値として、高、高高、過大を判定する３段階
の所定値を有し、前記フィルタ装置の前後差圧が高の所
定値を超えたときは、所定の時間経過後にそのフィルタ
装置を洗浄開始し洗浄完了信号で終了し、前記フィルタ
装置の前後差圧が高高の所定値を超えたときは、所定の
時間経過後にそのフィルタ装置を洗浄開始しその前後差
圧が高高の所定値未満になってから所定の時間経過後に
終了し、前記フィルタ装置の前後差圧が過大の所定値を
超えたときは、直ちにそのフィルタ装置を洗浄開始しそ
の前後差圧が過大の所定値未満になってから所定の時間
経過後に終了することを特徴とする。According to a fifth aspect of the present invention, in the control device for a condenser cooling water system according to any one of the first to fourth aspects, the cleaning operation means is configured to determine a predetermined differential pressure across the filter device. As a value, there are three predetermined values for judging high, high, high, and excessive. When the differential pressure across the filter device exceeds a predetermined high value, cleaning of the filter device is started after a predetermined time has elapsed. When the differential pressure across the filter device exceeds a predetermined value of the height, the filter device starts cleaning after a predetermined time, and the differential pressure across the filter device is less than the predetermined value of the height. When the differential pressure across the filter device exceeds an excessively large predetermined value, the filter device immediately starts cleaning and the differential pressure before and after the filter device becomes less than the excessively large predetermined value. Ends after a predetermined period of time And wherein the door.
【００２７】請求項５に係わる復水器冷却水系統の制御
装置では、請求項１乃至請求項４のいずれか１項の発明
の作用に加え、フィルタ装置の前後差圧の３段階の所定
値のうち、高高または過大の所定値を超えたときは、そ
の前後差圧が高高または過大の所定値未満になってから
所定の時間経過後に洗浄運転を終了する。つまり、フィ
ルタ装置の洗浄に十分な時間をかけ、フィルタ装置の清
浄度を高くする。According to a fifth aspect of the present invention, there is provided a control device for a condenser cooling water system according to any one of the first to fourth aspects. Among them, when the pressure exceeds a predetermined value of high or high, the washing operation is terminated after a predetermined time has elapsed since the differential pressure before and after the pressure becomes lower than the predetermined value of high or high. That is, sufficient time is taken for cleaning the filter device, and the cleanliness of the filter device is increased.
【００２８】[0028]
【発明実施の形態】以下、本発明の実施の形態を説明す
る。図１は本発明の実施の形態に係わる復水器冷却水系
統の制御装置１０を復水器冷却水系統に適用した構成図
である。図１に示すように、Ａ系統およびＢ系統の２系
列の復水器冷却水系統を有し、Ａ系統が逆洗浄運転にあ
る場合を示している。Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram in which a control device 10 for a condenser cooling water system according to an embodiment of the present invention is applied to a condenser cooling water system. As shown in FIG. 1, a case is shown in which there are two systems of condenser cooling water systems, an A system and a B system, and the A system is in the backwashing operation.
【００２９】制御装置１０は、入出力手段１７を介して
復水器冷却系統からのプロセス信号を入力すると共に、
復水器冷却系統への各種操作信号を出力する。例えば、
制御装置１０の洗浄運転手段１８は、フィルタ装置３
ａ、３ｂの差圧検出器７ａ、７ｂからの差圧信号を入力
して、その差圧信号が所定値を超えるときは、ブロー弁
８ａ、８ｂに開指令信号を出力して洗浄運転を行う。ま
た、通常運転手段１９は循環水ポンプ１ａ、１ｂの起動
信号を上記洗浄運転手段１８へ出力し、洗浄運転を行
う。The control device 10 inputs a process signal from the condenser cooling system via the input / output means 17 and
Outputs various operation signals to the condenser cooling system. For example,
The cleaning operation means 18 of the control device 10 includes the filter device 3
When the differential pressure signals from the differential pressure detectors 7a and 7b are inputted, and the differential pressure signals exceed a predetermined value, an open command signal is output to the blow valves 8a and 8b to perform the cleaning operation. . Further, the normal operation means 19 outputs a start signal of the circulating water pumps 1a and 1b to the cleaning operation means 18 to perform the cleaning operation.
【００３０】一方、保護操作手段２０は、フィルタ装置
３ａ、３ｂの差圧検出器７ａ、７ｂからの差圧信号が過
大となったとき、そのフィルタ装置３のバイパスライン
のバイパス弁６を開くと共にブロー弁８を開き、冷却水
をバイパス弁６でバイパスしてフィルタ装置３の保護操
作を行う。また、逆洗浄運転手段２１は、複数の復水器
冷却水系統のうち一部の系統に逆方向に冷却水を流す逆
洗浄運転を行う。この場合において、他系統での差圧信
号が所定値を超えたときに洗浄運転を行う。On the other hand, when the differential pressure signals from the differential pressure detectors 7a, 7b of the filter devices 3a, 3b become excessive, the protection operating means 20 opens the bypass valve 6 of the bypass line of the filter device 3 and The blow valve 8 is opened, and the cooling water is bypassed by the bypass valve 6 to protect the filter device 3. Further, the backwashing operation means 21 performs a backwashing operation in which cooling water flows in a part of a plurality of condenser cooling water systems in a reverse direction. In this case, the cleaning operation is performed when the differential pressure signal in another system exceeds a predetermined value.
【００３１】この実施の形態では、洗浄運転手段１８
は、フィルタ装置３ａ、３ｂの差圧検出器７ａ、７ｂか
らの差圧信号が所定値を超えたときだけでなく、循環水
ポンプ１ａ、１ｂが起動されたときにもフィルタ装置３
ａ、３ｂの洗浄運転を行うようにしている。この場合、
洗浄運転手段１８は、循環水ポンプ１ａ、１ｂの起動信
号を入力したときに、フィルタ装置３の洗浄運転を開始
する。そして、洗浄運転の開始から所定の時間経過後に
洗浄運転を終了する。また、逆洗浄運転手段２１での逆
洗浄運転が開始されたときにも洗浄運転を終了する。In this embodiment, the cleaning operation means 18
The filter device 3 is activated not only when the differential pressure signals from the differential pressure detectors 7a and 7b of the filter devices 3a and 3b exceed a predetermined value, but also when the circulating water pumps 1a and 1b are activated.
The cleaning operations a and 3b are performed. in this case,
The cleaning operation means 18 starts the cleaning operation of the filter device 3 when a start signal of the circulating water pumps 1a and 1b is input. Then, after a predetermined time has elapsed from the start of the cleaning operation, the cleaning operation ends. The cleaning operation is also terminated when the reverse cleaning operation by the reverse cleaning operation means 21 is started.
【００３２】一方、この実施の形態では、逆洗浄運転手
段２１での逆洗浄運転が開始されたときは、保護操作手
段２０は、その逆洗浄運転が行われるフィルタ装置３の
バイパスラインのバイパス弁を開く。図１では逆洗浄運
転の行われているＡ系統のバイパス弁６ａ、６ａ’が開
くことになる。On the other hand, in this embodiment, when the back washing operation by the back washing operation means 21 is started, the protection operation means 20 is connected to the bypass valve of the bypass line of the filter device 3 in which the back washing operation is performed. open. In FIG. 1, the A-system bypass valves 6a and 6a 'in which the backwash operation is performed are opened.
【００３３】次に、動作を説明する。循環水ポンプ１
ａ、１ｂの起動時に、復水器入口弁２ａ、２ｂ、復水器
出口弁５ａ、５ｂが開成し、洗浄運転手段１８は、ブロ
ー弁８ａ、８ｂを開成させる。そして、各々のフィルタ
装置３ａ、３ｂを洗浄運転する。これにより、各々のフ
ィルタ装置３ａ、３ｂのフィルタ１１ａ、１１ｂで捕獲
した固形物はブロー弁８ａ、８ｂおよび復水器出口弁５
ａ、５ｂを介して系外放水口へ放水される。Next, the operation will be described. Circulating water pump 1
When a and 1b are activated, the condenser inlet valves 2a and 2b and the condenser outlet valves 5a and 5b are opened, and the cleaning operation means 18 opens the blow valves 8a and 8b. Then, each of the filter devices 3a and 3b is operated for cleaning. As a result, the solid matter captured by the filters 11a and 11b of each of the filter devices 3a and 3b is removed by the blow valves 8a and 8b and the condenser outlet valve 5.
Water is discharged to the water outlet outside the system via a and 5b.
【００３４】次に、Ａ系統を冷却水を逆に流す逆洗浄運
転にする。図１はその場合の状態を示しており、Ａ系統
の通水方向を通常運転時とは逆方向に通水する。すなわ
ち冷却管４ａの下流側から上流側へ、さらにフィルタ装
置３ａの下流側から上流側に冷却水を流し、逆洗連絡弁
９ａおよび復水器出口弁５ｂを経由して系外の放出口に
放水する。Next, the system A is set to a back washing operation in which the cooling water flows backward. FIG. 1 shows a state in that case, in which the water flow direction of the A system is reversed in the direction opposite to the normal operation. That is, the cooling water flows from the downstream side of the cooling pipe 4a to the upstream side, and further from the downstream side of the filter device 3a to the upstream side, and flows to the discharge port outside the system via the backwash communication valve 9a and the condenser outlet valve 5b. Water.
【００３５】すなわち、逆洗浄運転状態にあるＡ系統で
は、循環水ポンプ１ａ、１ｂにより、冷却水は復水器入
口弁２ｂから逆洗連絡弁９ｂを介して復水器４の冷却管
４ａに導かれ、フィルタ装置３ａへ順次送水される。そ
して、その際には保護操作手段２０によりバイパス弁６
ａ、６ａ’が開かれ、冷却水は逆洗連絡弁９ａおよび復
水器出口弁５ｂを介して系外放水口へ放水される。That is, in the system A in the backwashing operation state, the cooling water is supplied from the condenser inlet valve 2b to the cooling pipe 4a of the condenser 4 via the backwash communication valve 9b by the circulating water pumps 1a and 1b. The water is guided and sequentially sent to the filter device 3a. In this case, the bypass valve 6 is controlled by the protection operation means 20.
a, 6a 'are opened, and the cooling water is discharged to the outside water outlet through the backwash communication valve 9a and the condenser outlet valve 5b.
【００３６】一方、通常運転状態にあるＢ系統では、循
環水ポンプ１ａ、１ｂにより、冷却水は復水器入口弁２
ｂからフィルタ装置３ｂへ順次送水され、復水器４の冷
却管４ｂに導かれ、タ−ビンにて仕事をした蒸気を復水
させた後、復水器出口弁５ｂを介して系外放水口へ放水
される。On the other hand, in the system B in the normal operation state, the cooling water is supplied to the condenser inlet valve 2 by the circulating water pumps 1a and 1b.
b to the filter device 3b in sequence, and after being led to the cooling pipe 4b of the condenser 4 to condense the steam that has worked in the turbine, the water is discharged outside the system via the condenser outlet valve 5b. Water is discharged to the mouth.
【００３７】図２は、本発明の実施の形態における洗浄
運転手段１８の論理回路図である。循環水ポンプ１ａ、
１ｂの起動信号は論理和回路２２Ａに入力され、タイマ
ー２３Ａとワイプアウト回路２４Ａとで構成される自己
保持回路により、その循環水ポンプ１ａ、１ｂの起動信
号はタイマー２３Ａに設定された所定時間だけ保持され
る。つまり、タイマー２３Ａは所定時間経過後に動作す
るオンディレータイマであり、タイマー２３Ａの起動信
号により自己保持が解除される。これはタイマー２３Ａ
の起動信号がワイプアウト回路２４Ａの否定回路に入力
され、ワイプアウト回路２４Ａの論理積回路が不成立に
なることにより達成される。FIG. 2 is a logic circuit diagram of the cleaning operation means 18 according to the embodiment of the present invention. Circulating water pump 1a,
The start signal of the circulating water pump 1a, 1b is input to the OR circuit 22A, and the start signal of the circulating water pumps 1a, 1b is kept for a predetermined time set by the timer 23A by a self-holding circuit composed of the timer 23A and the wipe-out circuit 24A. Will be retained. That is, the timer 23A is an on-delay timer that operates after the elapse of the predetermined time, and the self-holding is released by the activation signal of the timer 23A. This is timer 23A
Is input to the NOT circuit of the wipe-out circuit 24A, and the logical product of the wipe-out circuit 24A is not established.
【００３８】自己保持された循環水ポンプ１ａ、１ｂの
起動信号は、論理和回路２２Ｂに入力され、ワイプアウ
ト回路２４Ｂを介して洗浄運転指令としてフィルタ装置
３ａ、３ｂに出力される。ワイプアウト回路２４Ｂは、
復水器逆洗浄開始信号により論理和回路２２Ｂからの循
環水ポンプ１ａ、１ｂの起動信号を解除することにな
る。洗浄運転指令が不成立となると、否定回路２５Ａに
より通常運転指令が出力され通常運転となる。The start signals of the self-held circulating water pumps 1a and 1b are input to the OR circuit 22B and output to the filter devices 3a and 3b as a cleaning operation command via the wipe-out circuit 24B. The wipe-out circuit 24B
The start signal of the circulating water pumps 1a and 1b from the OR circuit 22B is released by the condenser reverse washing start signal. When the cleaning operation command is not satisfied, the normal operation command is output by the negation circuit 25A, and the normal operation is performed.
【００３９】このように、洗浄運転手段１８はフィルタ
装置３ａ、３ｂの差圧信号が正常値領域にある場合で
も、循環水ポンプ１ａ、１ｂが起動した場合には、その
フィルタ装置３ａ、３ｂ洗浄運転を行う。As described above, even when the differential pressure signals of the filter devices 3a and 3b are in the normal value range, the cleaning operation means 18 cleans the filter devices 3a and 3b when the circulating water pumps 1a and 1b are started. Driving.
【００４０】また、フィルタ装置３ａ、３ｂの前後差圧
の所定値として、「高」、「高高」、「過大」を判定す
る３段階の所定値を設けている。フィルタ装置３ａ、３
ｂの前後差圧が「高」の所定値を超えたときは、タイマ
ー２３Ｂを介して論理和回路２２Ｃに入力され、ワイプ
アウト回路２４Ｃおよび論理和回路２２Ｂを通して洗浄
運転指令が出力される。この場合、タイマー２３Ｂで定
まる所定時間経過後にそのフィルタ装置３ａ、３ｂが洗
浄開始され、論理積回路２６Ａの信号により解除される
ことになる。つまり、フィルタ装置３ａ、３ｂの前後差
圧が「高」でなくなって否定回路２５Ｂからの論理値１
が成立し、かつ、フィルタ装置３ａ、３ｂの洗浄完了信
号が成立したときに論理積回路２６Ａが成立し、これに
より、ワイプアウト回路２４Ｃに解除信号が出力され洗
浄運転指令が解除される。As the predetermined value of the differential pressure across the filter devices 3a and 3b, three predetermined values for determining "high", "high and high", and "excess" are provided. Filter devices 3a, 3
When the differential pressure before and after b exceeds a predetermined value of “high”, the differential pressure is input to the OR circuit 22C via the timer 23B, and a cleaning operation command is output through the wipeout circuit 24C and the OR circuit 22B. In this case, the cleaning of the filter devices 3a and 3b is started after the elapse of a predetermined time determined by the timer 23B, and is released by the signal of the AND circuit 26A. That is, the differential pressure across the filter devices 3a and 3b is no longer “high” and the logical value 1
Is satisfied, and the AND circuit 26A is established when the cleaning completion signal for the filter devices 3a and 3b is established. As a result, a release signal is output to the wipe-out circuit 24C, and the cleaning operation command is released.
【００４１】次に、フィルタ装置３ａ、３ｂの前後差圧
が「高高」の所定値を超えたときは、タイマー２３Ｃを
介して論理和回路２２Ｄに入力され、さらに、論理和回
路２２Ｅ、ワイプアウト回路２４Ｄおよび論理和回路２
２Ｂを通して洗浄運転指令が出力される。この場合、タ
イマー２３Ｃで定まる所定時間経過後にそのフィルタ装
置３ａ、３ｂを洗浄開始し、論理積回路２６Ｂの信号に
より解除されることになる。つまり、フィルタ装置３
ａ、３ｂの前後差圧が「高高」でなくなって否定回路２
５Ｃからの論理値１が成立し、かつ、タイマー２３Ｄで
定まる所定の時間経過後に論理積回路２６Ｂが成立し、
これにより、ワイプアウト回路２４Ｄに解除信号が出力
され洗浄運転指令が解除される。Next, when the differential pressure across the filter devices 3a and 3b exceeds a predetermined value of "high and high", it is input to the OR circuit 22D via the timer 23C, and further, the OR circuit 22E and the wiper OUT circuit 24D and OR circuit 2
A cleaning operation command is output through 2B. In this case, the cleaning of the filter devices 3a and 3b is started after the elapse of a predetermined time determined by the timer 23C, and the filter devices 3a and 3b are released by the signal of the AND circuit 26B. That is, the filter device 3
a, 3b, the differential pressure before and after is no longer “high” and the negation circuit 2
A logical value 1 from 5C is established, and after a predetermined time determined by the timer 23D has elapsed, the AND circuit 26B is established,
As a result, a release signal is output to the wipe-out circuit 24D, and the cleaning operation command is released.
【００４２】さらに、フィルタ装置３ａ、３ｂの前後差
圧が「過大」の所定値を超えたときは、論理和回路２２
Ｄに直接入力され、さらに、論理和回路２２Ｅ、ワイプ
アウト回路２４Ｄおよび論理和回路２２Ｂを通して洗浄
運転指令が出力される。この場合、フィルタ装置３ａ、
３ｂの前後差圧が「過大」であることを検出すると、フ
ィルタ装置３ａ、３ｂを洗浄開始し、論理積回路２６Ｂ
の信号により解除されることになる。つまり、フィルタ
装置３ａ、３ｂの前後差圧が「過大」でなくなって否定
回路２５Ｃからの論理値１が成立し、かつ、タイマー２
３Ｄで定まる所定の時間経過後に論理積回路２６Ｂが成
立し、これにより、ワイプアウト回路２４Ｄに解除信号
が出力され洗浄運転指令が解除される。Further, when the differential pressure across the filter devices 3a, 3b exceeds a predetermined value of "excess", the OR circuit 22
D is directly input, and further, a cleaning operation command is output through the OR circuit 22E, the wipe-out circuit 24D, and the OR circuit 22B. In this case, the filter device 3a,
When it is detected that the differential pressure across the filter 3b is "excessive", cleaning of the filter devices 3a and 3b is started, and the logical product circuit 26B
Is released by the signal of. That is, the differential pressure across the filter devices 3a and 3b is no longer "excessive", the logical value 1 from the negation circuit 25C is established, and the timer 2
After a lapse of a predetermined time determined by 3D, the AND circuit 26B is established, whereby a release signal is output to the wipe-out circuit 24D and the cleaning operation command is released.
【００４３】このように、差圧検出器７ａ、７ｂの所定
値を３段階とし、その内のレベルの高い２段階、例え
ば、「高高」と「過大」との検出信号を受けたとき、そ
の差圧信号が正常レベルに復帰しても、復水器冷却水系
統の洗浄運転をタイマー２３Ｄで定まる所定時間は継続
するようにしている。これにより、「高高」や「過大」
の差圧信号に対して復水器冷却水系統の清浄度を向上さ
せる。従って、異常差圧発生を抑えフィルタ装置３ａ、
３ｂの破損を防止することができ、フィルタ装置３ａ、
３ｂの洗浄運転が頻繁に起動停止しないようにし、起動
・停止の繰り返しによる機器の寿命向上を図っている。As described above, when the predetermined values of the differential pressure detectors 7a and 7b are set to three levels, and two levels of which are high, for example, when the detection signals of "high and high" and "excess" are received, Even if the differential pressure signal returns to a normal level, the washing operation of the condenser cooling water system is continued for a predetermined time determined by the timer 23D. As a result, "high or high"
To improve the cleanliness of the condenser cooling water system with respect to the differential pressure signal. Therefore, the occurrence of abnormal differential pressure is suppressed and the filter device 3a,
3b can be prevented from being damaged, and the filter device 3a,
The cleaning operation of 3b is not frequently started and stopped, and the life of the equipment is improved by repeating the start and stop.
【００４４】以上説明したように、循環ポンプ１ａ、１
ｂの起動時に洗浄運転に入るので、循環水ポンプ１ａ、
１ｂの起動時に発生する多量の固形物流入によるフィル
タ装置３ａ、３ｂの異常差圧を防止できる。つまり、循
環水ポンプ１ａ、１ｂの起動時におけるフィルタ装置３
ａ、３ｂの閉塞による異常差圧の発生は防止され、か
つ、バイパス弁６の開成は防止できる。従って、冷却管
４ａ、４ｂへの固形物の流入を防止できるので、復水器
４の冷却機能の低下や、フィルタ装置３ａ、３ｂの破損
は防止できる。この場合の循環水ポンプ１ａ、１ｂの起
動時の洗浄運転の停止は、タイマー２３ａで定められる
ので、洗浄運転時間を必要最低限に設定することが可能
であり、復水器４の稼働率を向上させることができる。As explained above, the circulation pumps 1a, 1a
Since the cleaning operation starts at the start of b, the circulating water pump 1a,
Abnormal differential pressure of the filter devices 3a, 3b due to a large amount of solid matter flowing in at the time of activation of the filter 1b can be prevented. That is, the filter device 3 at the time of starting the circulating water pumps 1a and 1b
The occurrence of an abnormal differential pressure due to the closure of a and 3b can be prevented, and the opening of the bypass valve 6 can be prevented. Therefore, the inflow of the solid matter into the cooling pipes 4a and 4b can be prevented, so that the cooling function of the condenser 4 can be prevented from being lowered and the filter devices 3a and 3b can be prevented from being damaged. In this case, the stop of the cleaning operation at the time of starting the circulating water pumps 1a and 1b is determined by the timer 23a, so that the cleaning operation time can be set to the minimum necessary, and the operation rate of the condenser 4 is reduced. Can be improved.
【００４５】以上の説明では、Ａ系統およびＢ系統共に
洗浄運転を開始する場合について説明したが、いずれか
一方を逆洗浄運転するようにしても良い。逆洗浄運転
は、運転員の判断により、必要に応じて開始される。従
って、洗浄運転中に逆洗浄運転指令が出力されたとき
は、ワイプアウト回路２４Ｂにより洗浄運転は中止され
るようになっている。In the above description, the case where the cleaning operation is started for both the system A and the system B has been described. The backwashing operation is started as required by the operator. Therefore, when the reverse cleaning operation command is output during the cleaning operation, the cleaning operation is stopped by the wipe-out circuit 24B.
【００４６】図３は本発明の実施の形態における保護操
作手段２０の論理回路図である。保護操作手段２０は、
通常運転中にフィルタ装置３ａ、３ｂの前後差圧が過大
となったときは、その過大診号を論理和回路２２Ｆに入
力し、そのフィルタ装置３ａ、３ｂのバイパスラインの
バイパス弁６を開き、フィルタ装置３ａ、３ｂの保護操
作を行う。また、その過大信号が復帰したときは否定回
路２５Ｄによりバイパス弁６の閉操作を行い保護操作を
終了する。FIG. 3 is a logic circuit diagram of the protection operation means 20 according to the embodiment of the present invention. The protection operation means 20 includes:
When the differential pressure across the filter devices 3a and 3b becomes excessive during normal operation, the excessive medical care signal is input to the OR circuit 22F, and the bypass valves 6 of the bypass lines of the filter devices 3a and 3b are opened. The protection operation of the filter devices 3a and 3b is performed. When the excessive signal is restored, the closing operation of the bypass valve 6 is performed by the NOT circuit 25D, and the protection operation is completed.
【００４７】また、逆洗浄運転手段２１により逆洗浄運
転が開始されたときは、その逆洗浄運転開始信号は論理
和回路２２Ｇに入力され、論理和回路２２Ｇおよびワイ
プアウト回路２４Ｅにより自己保持され、論理和回路２
２Ｆを介してバイパス弁６の開信号として出力される。
これにより、その逆洗運転が行われるフィルタ装置３
ａ、３ｂのバイパスラインのバイパス弁６を開く。ま
た、逆洗浄復帰信号により自己保持された逆洗浄運転開
始信号は解除される。When the reverse cleaning operation is started by the reverse cleaning operation means 21, the reverse cleaning operation start signal is input to the OR circuit 22G, and is self-held by the OR circuit 22G and the wipe-out circuit 24E. OR circuit 2
It is output as an open signal of the bypass valve 6 via 2F.
Thereby, the filter device 3 in which the backwash operation is performed
The bypass valves 6 of the bypass lines a and 3b are opened. In addition, the reverse cleaning operation start signal that is self-held by the reverse cleaning return signal is released.
【００４８】このように、逆洗浄運転の際にバイパス弁
６を開くので、逆洗浄運転により復水器４の下流から供
給された冷却水は、フィルタ装置３ａ、３ｂと冷却管４
ａ、４ｂとの間の配管ラインに付着し堆積している固形
物を逆洗浄するだけでなく、バイパス弁６を含むバイパ
スラインに滞留している水を系外に排出させる。As described above, since the bypass valve 6 is opened during the backwashing operation, the cooling water supplied from the downstream of the condenser 4 by the backwashing operation is supplied to the filter devices 3a and 3b and the cooling pipe 4a.
In addition to back-washing solid matter adhering and accumulating on the piping line between a and b, water remaining in the bypass line including the bypass valve 6 is discharged out of the system.
【００４９】従って、冷却管４ａ、４ｂの内部の洗浄、
冷却管４ａ、４ｂとフィルタ装置３ａ、３ｂとの間の配
管ラインの逆洗浄、さらにバイパスラインの洗浄ができ
るので、復水器冷却水系統を高い清浄度に維持できる。Therefore, cleaning the inside of the cooling pipes 4a and 4b,
Reverse cleaning of the piping line between the cooling pipes 4a, 4b and the filter devices 3a, 3b and cleaning of the bypass line can be performed, so that the condenser cooling water system can be maintained at high cleanliness.
【００５０】[0050]
【発明の効果】以上説明したように、本発明によれば、
冷却管およびフィルタ装置を含む復水器冷却水系統を高
い清浄度に維持し、安定した復水器冷却性能が得られ、
かつプラントの信頼性を損ねることなく、復水器の点検
等に費やされる経済的な負担をも軽減できる。As described above, according to the present invention,
The condenser cooling water system including the cooling pipe and the filter device is maintained at high cleanliness, and stable condenser cooling performance is obtained.
In addition, the economical burden spent on condenser inspection and the like can be reduced without impairing the reliability of the plant.
【図１】図１は、本発明の実施の形態に係わる復水器冷
却水系統の制御装置を復水器冷却水系統に適用した構成
図である。FIG. 1 is a configuration diagram in which a control device for a condenser cooling water system according to an embodiment of the present invention is applied to a condenser cooling water system.
【図２】図２は、本発明の実施の形態における洗浄運転
手段の論理回路図である。FIG. 2 is a logic circuit diagram of a cleaning operation unit according to the embodiment of the present invention.
【図３】図３は、本発明の実施の形態における保護操作
手段の論理回路図である。FIG. 3 is a logic circuit diagram of a protection operation unit according to the embodiment of the present invention.
【図４】図４は、従来の復水器冷却水系統（通常運転状
態）の構成図である。FIG. 4 is a configuration diagram of a conventional condenser cooling water system (normal operation state).
【図５】図５は、従来のフィルタ装置のフィルタ内部の
構成図である。FIG. 5 is a configuration diagram of the inside of a filter of a conventional filter device.
【図６】図６は、従来の復水器冷却水系統（逆洗浄運転
状態）の構成図である。FIG. 6 is a configuration diagram of a conventional condenser cooling water system (backwashing operation state).
１ 循環水ポンプ、２ 復水器入口弁、３ フィルタ装
置、４ 復水器、４ａ，４ｂ 冷却管、５ 復水器出口
弁、６ バイパス弁、７ 差圧検出器、８ ブロー弁、
９ 逆洗連絡弁、１０ 制御装置、１１ フィルタ、１
２ フィルタケーシング、１３ フィルタ支持板、１４
流路分岐板、１５ フィルタエレメント、１６ フラ
ップ、１７ 入出力手段、１８ 洗浄運転手段、１９
通常運転手段、２０ 保護操作手段、２１ 逆洗浄運転
手段、２２ 論理和回路、２３タイマー、２４ ワイプ
アウト回路、２５ 否定回路、２６ 論理積回路1 circulating water pump, 2 condenser inlet valve, 3 filter device, 4 condenser, 4a, 4b cooling pipe, 5 condenser outlet valve, 6 bypass valve, 7 differential pressure detector, 8 blow valve,
9 Backwash communication valve, 10 Control device, 11 Filter, 1
2 filter casing, 13 filter support plate, 14
Flow path branching plate, 15 filter element, 16 flap, 17 input / output means, 18 washing operation means, 19
Normal operation means, 20 protection operation means, 21 reverse cleaning operation means, 22 OR circuit, 23 timer, 24 wipe-out circuit, 25 negation circuit, 26 logical product circuit
Claims (5)
循環水ポンプからフィルタ装置を介して複数の復水器冷
却水系統の各々の系統に冷却水を供給する通常運転手段
と、前記フィルタ装置の前後差圧が所定値を超えたとき
そのフィルタ装置を洗浄する洗浄運転手段と、前記フィ
ルタ装置の前後差圧が過大となったときそのフィルタ装
置のバイパスラインのバイパス弁を開く保護操作手段と
を備えた復水器冷却水系統の制御装置において、前記洗
浄運転手段は、前記循環水ポンプが起動されたときに前
記フィルタ装置の洗浄運転を行うことを特徴とする復水
器冷却水系統の制御装置。1. A normal operation means for supplying cooling water to each of a plurality of condenser cooling water systems from a circulating water pump to a condenser cooling pipe of a steam turbine plant via a filter device, Cleaning operation means for cleaning the filter device when the differential pressure across the filter device exceeds a predetermined value; and protection operation for opening a bypass valve of a bypass line of the filter device when the differential pressure across the filter device becomes excessive. Means for controlling the condenser cooling water system, wherein the cleaning operation means performs a cleaning operation of the filter device when the circulating water pump is started. System control device.
が起動されたときに前記フィルタ装置の洗浄運転を開始
し、所定の時間経過後または逆洗浄運転が開始されたと
きは洗浄運転を終了することを特徴とする請求項１に記
載の復水器冷却水系統の制御装置。2. The washing operation means starts the washing operation of the filter device when the circulating water pump is started, and ends the washing operation after a predetermined time has elapsed or when the reverse washing operation is started. The control device for a condenser cooling water system according to claim 1, wherein
の系統に逆方向に冷却水を流す逆洗浄運転を行う場合の
逆洗浄運転手段を設けたことを特徴とする請求項１また
は請求項２に記載の復水器冷却水系統の制御装置。3. A backwashing operation means for performing a backwashing operation in which cooling water is supplied to a part of the plurality of condenser cooling water systems in a reverse direction. Or the control device of the condenser cooling water system according to claim 2.
開始されたときは、その逆洗浄運転が行われるフィルタ
装置のバイパスラインのバイパス弁を開くことを特徴と
する請求項３に記載の復水器冷却水系統の制御装置。4. The protection operation means according to claim 3, wherein when the backwash operation is started, the protection operation means opens a bypass valve of a bypass line of a filter device in which the backwash operation is performed. Control device for condenser cooling water system.
の前後差圧の所定値として、高、高高、過大を判定する
３段階の所定値を有し、前記フィルタ装置の前後差圧が
高の所定値を超えたときは、所定の時間経過後にそのフ
ィルタ装置を洗浄開始し洗浄完了信号で終了し、前記フ
ィルタ装置の前後差圧が高高の所定値を超えたときは、
所定の時間経過後にそのフィルタ装置を洗浄開始しその
前後差圧が高高の所定値未満になってから所定の時間経
過後に終了し、前記フィルタ装置の前後差圧が過大の所
定値を超えたときは、直ちにそのフィルタ装置を洗浄開
始しその前後差圧が過大の所定値未満になってから所定
の時間経過後に終了することを特徴とする請求項１乃至
請求項４のいずれか１項に記載の復水器冷却水系統の制
御装置。5. The cleaning operation means has a predetermined value of the differential pressure across the filter device as a predetermined value of three stages for determining high, high, and excessive, and the differential pressure across the filter device is high. When the predetermined value of the filter device exceeds a predetermined time, the filter device starts cleaning after the lapse of a predetermined time and ends with a cleaning completion signal, and when the differential pressure across the filter device exceeds a predetermined value of the height,
After the lapse of a predetermined time, the filter device is started to be cleaned, and after the lapse of a predetermined time since the pressure difference before and after the difference becomes less than a predetermined value of the height, the process is terminated, and the pressure difference before and after the filter device exceeds an excessively large predetermined value. 5. The method according to claim 1, wherein the cleaning of the filter device is started immediately, and the process is terminated after a predetermined time has elapsed since the pressure difference before and after the filter device becomes less than a predetermined value which is excessively large. The control device of the condenser cooling water system according to the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11164702A JP2000356479A (en) | 1999-06-11 | 1999-06-11 | Controller for condenser cooling water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11164702A JP2000356479A (en) | 1999-06-11 | 1999-06-11 | Controller for condenser cooling water system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000356479A true JP2000356479A (en) | 2000-12-26 |
Family
ID=15798258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11164702A Pending JP2000356479A (en) | 1999-06-11 | 1999-06-11 | Controller for condenser cooling water system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000356479A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013087709A (en) * | 2011-10-19 | 2013-05-13 | Hitachi Ltd | Condenser cooling water system |
| JP2013164411A (en) * | 2012-01-12 | 2013-08-22 | Unie Flex:Kk | Vessel cleaning apparatus |
| CN103784989A (en) * | 2014-01-27 | 2014-05-14 | 楚天科技股份有限公司 | On-line sterilization pipeline system of breathing filter for sterile container |
| CN117067633A (en) * | 2023-10-12 | 2023-11-17 | 成都飞机工业（集团）有限责任公司 | Condensing system state monitoring method based on standard condensing curve |
-
1999
- 1999-06-11 JP JP11164702A patent/JP2000356479A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013087709A (en) * | 2011-10-19 | 2013-05-13 | Hitachi Ltd | Condenser cooling water system |
| JP2013164411A (en) * | 2012-01-12 | 2013-08-22 | Unie Flex:Kk | Vessel cleaning apparatus |
| CN103784989A (en) * | 2014-01-27 | 2014-05-14 | 楚天科技股份有限公司 | On-line sterilization pipeline system of breathing filter for sterile container |
| CN103784989B (en) * | 2014-01-27 | 2016-04-20 | 楚天科技股份有限公司 | The online sterilizing pipe-line system of sterile chamber breathing circuit filter |
| CN117067633A (en) * | 2023-10-12 | 2023-11-17 | 成都飞机工业（集团）有限责任公司 | Condensing system state monitoring method based on standard condensing curve |
| CN117067633B (en) * | 2023-10-12 | 2024-03-15 | 成都飞机工业（集团）有限责任公司 | Condensing system state monitoring method based on standard condensing curve |
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