JPS62123297A - Performance improving device for heat exchanger - Google Patents
Performance improving device for heat exchangerInfo
- Publication number
- JPS62123297A JPS62123297A JP23699185A JP23699185A JPS62123297A JP S62123297 A JPS62123297 A JP S62123297A JP 23699185 A JP23699185 A JP 23699185A JP 23699185 A JP23699185 A JP 23699185A JP S62123297 A JPS62123297 A JP S62123297A
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- heat exchanger
- cooling
- differential pressure
- foreign matter
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/12—Fluid-propelled scrapers, bullets, or like solid bodies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B11/00—Controlling arrangements with features specially adapted for condensers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Filtration Of Liquid (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、化学プラント、火力・原子力発電等の各種発
電プラント等に用いる管式熱交換器の性能改善装置に係
り、特に熱交換器の冷却水中の異物の除去、管内の清掃
を行うことにより熱交換器の伝熱性能を改善する熱交換
器の性能改善装置に関するものである。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a device for improving the performance of a tubular heat exchanger used in chemical plants, various power plants such as thermal and nuclear power plants, etc. The present invention relates to a heat exchanger performance improvement device that improves the heat transfer performance of a heat exchanger by removing foreign matter from water and cleaning the inside of the pipes.
火力、原子力発電プラント等における熱交換器は、冷却
水として海水又は河川水等が使用されているために、冷
却管の内部に貝等の異物が付着したリスライム、有機物
等が沈積、付着して冷却管獣
が閉塞２紙損し或いは熱交換器に伝熱性能に低下をきた
すこともあり、従来よりこのような事態を防止するため
の種々の改善策が提案されている。Heat exchangers in thermal power plants, nuclear power plants, etc. use seawater or river water as cooling water, so slime with foreign substances such as shellfish and organic matter deposited and adhered to the inside of the cooling pipes. If the cooling pipe is blocked, it may cause paper loss or reduce the heat transfer performance of the heat exchanger, and various improvement measures have been proposed to prevent such a situation.
例えば、貝等の異物の付着を防止するものとしては、特
公昭５５−４９８９８号に示すように分離ケーシングに
設けたスクリーン外面で異物をとらえ、この異物を渦流
によって浮遊させて装置外に排出させたり、特開昭５８
−３６０７号に示すようにケーシング内に開閉可能な濾
過板を山形に傾斜連接して配設し、この濾過板に逆洗機
能を有するフラップ弁を設けたものがあるが、前者の場
合には装置が大型化し、また後者の場合にはフラップ弁
の駆動装置を設けるために装置が複雑化し、また逆洗水
が異物排出側近傍のみにかかり濾過板金面の異物の除去
が困難であった。For example, as shown in Japanese Patent Publication No. 55-49898, foreign matter is caught on the outer surface of a screen provided in the separation casing, and the foreign matter is suspended by a vortex and discharged from the device to prevent the attachment of foreign matter such as shellfish. Or, Japanese Patent Application Publication No. 1983
As shown in No. 3607, there is a filter in which a filtration plate that can be opened and closed is installed in a casing in an inclined manner in a chevron shape, and a flap valve with a backwashing function is installed on this filtration plate, but in the case of the former, The device becomes larger and, in the latter case, a flap valve driving device is provided, making the device more complicated.Also, the backwash water is applied only to the vicinity of the foreign matter discharge side, making it difficult to remove foreign matter from the filter plate metal surface.
また、冷却管の管内清掃装置としては、管内にスポンジ
ボールを循環させて管内の汚れを落とすものや、特開昭
５６−６６６９９号に示すように、管内に逆洗水を流し
て管内の清掃を行うもの等があるが。In addition, as a pipe cleaning device for cooling pipes, there is one that circulates sponge balls inside the pipe to remove dirt inside the pipe, and as shown in Japanese Patent Application Laid-Open No. 56-66699, there is a device that cleans the inside of the pipe by flowing backwash water into the pipe. There are some that do this.
従来のこれらの装置は管内に流入する異物の阻止を図る
点について充分に配慮されておらず、また。These conventional devices do not give sufficient consideration to preventing foreign matter from flowing into the pipe.
熱交換器の経時的な性能変化を的確に監視して熱交換器
の改善を図る配慮が充分になされていなかった。Not enough consideration has been given to accurately monitoring changes in the performance of the heat exchanger over time to improve the heat exchanger.
本発明の目的は、前記従来の問題点を解消し、更に熱交
換器の性能を常時監視しながら異物の除去と管内清掃を
自動システム化して最適な状態で行い得ると共に、伝熱
性能の改善を図り得る熱交換器の性能改善装置を提供す
ることにある。The purpose of the present invention is to solve the above-mentioned conventional problems, and furthermore, to automatically systemize the removal of foreign substances and cleaning the inside of the pipes while constantly monitoring the performance of the heat exchanger, and to perform the cleaning in an optimal state, and to improve the heat transfer performance. An object of the present invention is to provide a heat exchanger performance improvement device that can improve the performance of a heat exchanger.
本発明は上記目的を達成するために、熱交換器の冷却管
に冷却水を送る送水系配管と冷却水を排水する排水系配
管の交叉位置に冷却水の流れを正逆切換する逆洗弁機構
を設けると共に、前記送水系配管における前記逆洗弁機
構と前記熱交換器の入口側水室との間に貝等の異物の侵
入を阻止する濾過機構を開閉機構を介して開閉可能に設
置し、且つ前記送水系配管及び前記排水系配管にはスポ
ンジボールをこれらの配管及びスポンジボール系配管を
介して前記熱交換器の冷却管内に循環させて該冷却管内
の清掃を行う冷却管清掃装置を設は更に前記逆洗弁機構
、前記冷却管清掃装置及び前記濾過板の制御系は、前記
濾過板を通過する冷却水の通過前後の差圧を検出する差
圧検出手段及び前記熱交換器の冷却水量、冷却水の冷却
管通過前後の温度、前記熱交換器の器内温度等を検出す
る各検出手段と、前記差圧検出手段の測定データに基づ
き前記濾過板への異物の付着度合を演算し、且つ前記各
検出手段の測定データから前記熱交換器の冷却管の汚れ
度合を演算して前記熱交換器の伝熱性能を監視する熱交
換器性能監視手段と、前記差圧検出手段の検出値が規定
値になると前記熱交換器性能監視手段からの判定信号に
基づき前記逆洗弁機構を反転制御する逆洗弁制御手段と
、前記差圧検出手段の検出値が前記規定値以上の所定差
圧値に達すると前記濾過板を開制御する濾過板開閉制御
手段と、前記熱交換器性能監視手段が前゛記冷却管の汚
れ度合からこの冷却管の伝熱性能の低下を判定した場合
に判定信号に基づき前記冷却管清掃装置を作動制御する
清掃制御手段とにより構成したものである。In order to achieve the above object, the present invention provides a backwash valve that switches the flow of cooling water between forward and reverse directions at the intersection of the water supply system piping that sends cooling water to the cooling pipes of a heat exchanger and the drainage system piping that drains the cooling water. A filtration mechanism is provided to prevent foreign matter such as shellfish from entering between the backwash valve mechanism in the water supply system piping and the inlet side water chamber of the heat exchanger. and a cooling pipe cleaning device for cleaning the inside of the cooling pipe of the heat exchanger by circulating sponge balls in the water supply system piping and the drainage system piping through these piping and the sponge ball system piping. Further, the control system for the backwash valve mechanism, the cooling pipe cleaning device, and the filter plate includes a pressure difference detection means for detecting a pressure difference before and after the cooling water passes through the filter plate, and a pressure difference detecting means for detecting the pressure difference before and after the cooling water passes through the filter plate, and the heat exchanger. detection means for detecting the amount of cooling water, the temperature before and after the cooling water passes through the cooling pipe, the internal temperature of the heat exchanger, and the degree of adhesion of foreign matter to the filter plate based on the measurement data of the differential pressure detection means. heat exchanger performance monitoring means for calculating the degree of contamination of the cooling pipes of the heat exchanger from the measurement data of each of the detection means and monitoring the heat transfer performance of the heat exchanger; and the differential pressure detection means. a backwash valve control means that reversely controls the backwash valve mechanism based on a determination signal from the heat exchanger performance monitoring means when the detected value of the means reaches the specified value; When the predetermined differential pressure value is reached, the filter plate opening/closing control means controls the opening of the filter plate, and the heat exchanger performance monitoring means detects a decrease in the heat transfer performance of the cooling pipe based on the degree of contamination of the cooling pipe. and cleaning control means for controlling the operation of the cooling pipe cleaning device based on the determination signal when a determination is made.
以上の構成よりなる本発明によれば、冷却水を熱交換器
に送る過程において、冷却水に含まれた貝等の異物の侵
入を濾過板を介して阻止することができ、しかも濾過板
に付着した異物の付着度合を濾過板の前後に設けた差圧
検出手段及び熱交換器性能監視手段によって監視するこ
とができ、この差圧検出手段の差圧値が規定以上に達す
ると逆洗弁が逆洗弁制御手段を介した反転制御され、冷
却水が逆方向から流れて濾過板を逆洗し、濾過板に付着
した貝等の異物を取り去って系外に排出させることがで
きる。また、冷却水の濾過装置内に異物が短時間のうち
に多量に流入すると、濾過板を通過する冷却水の通過前
後の差圧が前記規定値以上の差圧値となるために、濾過
板開閉制御手段を介して濾過板が一時的に開き、異物は
大きな容積を有する熱交換器水室内に一時待避される。According to the present invention having the above configuration, in the process of sending the cooling water to the heat exchanger, it is possible to prevent foreign substances such as shellfish contained in the cooling water from entering through the filter plate. The degree of adhesion of foreign matter can be monitored by differential pressure detection means and heat exchanger performance monitoring means installed before and after the filter plate, and when the differential pressure value of this differential pressure detection means reaches a specified value or more, the backwash valve is activated. is reversely controlled via a backwash valve control means, and the cooling water flows from the opposite direction to backwash the filter plate, removing foreign matter such as shellfish adhering to the filter plate and discharging it out of the system. In addition, if a large amount of foreign matter flows into the cooling water filtration device in a short period of time, the differential pressure before and after the cooling water passes through the filter plate becomes a differential pressure value higher than the specified value, so the filter plate The filter plate is temporarily opened via the opening/closing control means, and the foreign matter is temporarily evacuated into the heat exchanger water chamber having a large volume.
従って、この状態で逆洗弁を逆洗制御すると異物が系外
に排出され、その結果、多量の異物が配管に流入した時
においても、濾過板が閉塞され冷却水が極度に減少して
熱交換器がトリップするという事態を未然に防止するこ
とができる。Therefore, if the backwash valve is controlled to backwash in this state, foreign matter will be discharged out of the system, and as a result, even when a large amount of foreign matter flows into the piping, the filter plate will be blocked and the cooling water will be extremely reduced, resulting in heat generation. It is possible to prevent the exchanger from tripping.
更に、熱交換器の稼動時においては、冷却水の流量、熱
交換器の器内温度、冷却管を通過する通過前後の温度等
の各データが検出手段を介して時々刻々熱交換器の性能
監視手段に送られ、この性能監視手段がこれらの各デー
タを演算して熱交換器の汚れ度合を検出し、この演算結
果に基づき熱交換器の性能劣化も規定により進行してい
ると判定された場合には、清掃制御手段によって冷却管
清掃装置が駆動制御され、スポンジボールが冷却水の送
水系配管に投入されて循環し冷却管の管内が清掃される
。従って本発明によれば、管内の異物除去、逆洗制御、
冷却管の清掃作業の全てを熱交換器の性能を監視しなが
ら自動システム化して行うことができる。Furthermore, when the heat exchanger is in operation, various data such as the flow rate of cooling water, the internal temperature of the heat exchanger, and the temperature before and after passing through the cooling pipes are collected through the detection means, and the performance of the heat exchanger is monitored moment by moment. The performance monitoring means calculates each of these data to detect the degree of contamination of the heat exchanger, and based on the calculation result, it is determined that the performance deterioration of the heat exchanger is progressing according to regulations. In this case, the cooling pipe cleaning device is driven and controlled by the cleaning control means, and the sponge balls are thrown into the cooling water supply system piping and circulated to clean the inside of the cooling pipe. Therefore, according to the present invention, foreign matter removal inside the pipe, backwash control,
All cooling pipe cleaning work can be automated and systemized while monitoring the performance of the heat exchanger.
本発明の一実施例を第１図に基づき説明する。 An embodiment of the present invention will be described based on FIG.
第１図は、火力・原子力発電プラント用の復水器に本実
施例を適用したシステム構成図を示すものである。同図
において、１は海水等の冷却水を汲み上げる冷却水ポン
プ、２は冷却水を復水器３側に供給する送水系配管、３
は多数の冷却管４を備えた復水器、５は冷却水を排出す
る排水系配管である。FIG. 1 shows a system configuration diagram in which this embodiment is applied to a condenser for a thermal or nuclear power plant. In the figure, 1 is a cooling water pump that pumps up cooling water such as seawater, 2 is a water supply system piping that supplies cooling water to the condenser 3 side, and 3 is a cooling water pump that pumps up cooling water such as seawater.
is a condenser equipped with a large number of cooling pipes 4, and 5 is a drainage system piping for discharging cooling water.
６は冷却水の送水系配管２と排水系配管５の交叉位置に
設けた逆洗弁であり、逆洗弁６は弁切換機構（図示せず
）を介して正逆回転動作を行うものであり、常時は正流
側の弁開位置にあり、この場合には冷却水ポンプ１によ
って汲み上げられた冷却水を送水系配管２を通り１次い
で復水器３の入口側水室７．冷却管４）出口側水室８．
排水系配管５．逆洗弁６を経て系外に排出される。また
逆洗弁６を逆流側の弁開位置に切換えると、冷却水ポン
プ１からの冷却水は、排水系配管５．出口側水室８．冷
却管４）入口側水室７．送水系配管２、逆洗弁６を経て
系外に排水される。Reference numeral 6 denotes a backwash valve installed at the intersection of the cooling water supply system pipe 2 and the drainage system pipe 5, and the backwash valve 6 performs forward and reverse rotation via a valve switching mechanism (not shown). The valve is normally in the open position on the forward flow side, and in this case, the cooling water pumped up by the cooling water pump 1 passes through the water supply system piping 2 and then into the water chamber 7 on the inlet side of the condenser 3. Cooling pipe 4) Outlet side water chamber 8.
Drainage system piping 5. It is discharged outside the system through the backwash valve 6. Furthermore, when the backwash valve 6 is switched to the backflow side valve open position, the cooling water from the cooling water pump 1 is transferred to the drainage system piping 5. Outlet side water chamber8. Cooling pipe 4) Inlet side water chamber 7. The water is drained out of the system via the water supply system piping 2 and the backwash valve 6.
９は、送水系配管２の水路の一部に設けた濾過装置であ
り、水路に回動可能に設けた格子板（濾過板）１０と、
この格子板１０を回動させる同動機構を備えてなり、常
時は水路を仕切るように設置され、冷却水中の貝等の異
物を格子板１０に付着させて冷却水のみを復水器３側に
通過させるものである。9 is a filtration device provided in a part of the waterway of the water supply system piping 2, and includes a lattice plate (filter plate) 10 rotatably provided in the waterway;
The lattice plate 10 is equipped with a co-moving mechanism that rotates the lattice plate 10, and is normally installed so as to partition the waterway, allowing foreign objects such as shellfish in the cooling water to adhere to the lattice plate 10 and directing only the cooling water to the condenser 3 side. It is allowed to pass.
１１は冷却水の流れにのって復水器の冷却水系統管を循
環する管内清掃用のスポンジボールであり、スポンジボ
ール１１は多数からなる。スポンジボール１１は可動格
子式の濾過袋Ｗ１９の出口側に設置されたスポンジボー
ル投入管１２から再循環水と共に送水系配管２内に導入
゛され、復水器冷却管４の管内を冷却水と共に通過し、
その間に冷却管４内部に付着したスライム、スケール等
を除去し冷却管４内を清掃した後に出口側水室８に至る
もので、その後出口側水室８の近くに設けた捕集器１３
で冷却水と分離されて系外に取り出され。Reference numeral 11 denotes a sponge ball for cleaning the inside of the condenser cooling water system pipe that circulates along the flow of the cooling water, and the sponge ball 11 consists of a large number of balls. The sponge balls 11 are introduced into the water supply system piping 2 along with recirculated water from the sponge ball input pipe 12 installed on the outlet side of the movable lattice type filter bag W19, and are introduced into the water supply system piping 2 along with the cooling water inside the condenser cooling pipe 4. pass through,
During this time, slime, scale, etc. that have adhered to the inside of the cooling pipe 4 are removed and the inside of the cooling pipe 4 is cleaned before reaching the outlet side water chamber 8. After that, a collector 13 is installed near the outlet side water chamber 8.
It is separated from the cooling water and taken out of the system.
ボール循環ポンプ１４．ボール回収器１５及びボール循
環配管１６を通って再び送水系配管２側に投入管１１を
介して投入されるように設定されている。なお、ボール
捕集器１３を出た冷却水は送洗弁６を通り系外に排出さ
れる。Ball circulation pump 14. The ball is set to pass through the ball recovery device 15 and the ball circulation pipe 16, and then be fed back into the water supply system pipe 2 side via the feed pipe 11. Note that the cooling water that has exited the ball collector 13 passes through the feed and wash valve 6 and is discharged to the outside of the system.
１７は可動格子式濾過袋［９における格子１０の前後位
置の圧力差を検出する差圧計であり、この差圧計１７の
検出信号は、熱交換器性能監視手段２４に入力され、差
圧計１７の検出値が規定値まで達すると、逆洗弁制御手
段１８が逆洗弁６の駆動機構に弁切換信号（正流から逆
流側への切換信号）を発するように設定されている。ま
た、差圧計１７の値が規定値を超えた過大差圧値になる
と濾過板回転制御手段１９を介して濾過板１０が開動制
御される。17 is a differential pressure gauge that detects the pressure difference between the front and back positions of the grid 10 in the movable lattice filter bag [9; the detection signal of this differential pressure gauge 17 is input to the heat exchanger performance monitoring means 24, When the detected value reaches a specified value, the backwash valve control means 18 is set to issue a valve switching signal (switching signal from the normal flow to the reverse flow side) to the drive mechanism of the backwash valve 6. Further, when the value of the differential pressure gauge 17 reaches an excessive differential pressure value exceeding a specified value, the filter plate 10 is controlled to open via the filter plate rotation control means 19.
２０は濾過装置！！９の出口側の冷却水量を検出する冷
却水流量計、２１は復水器３の冷却水入１コ側の冷却水
温を検出する冷却水入口温度計、２２は復水器３の内部
温度を検出する器内温度計、２３は復水器３の冷却水出
口側の冷却水温を検出する冷却水出口温度計であり、こ
れらの計測系の検出信号は後述する復水器の性能監視手
段２４に入力される。20 is a filtration device! ! 9 is a cooling water flow meter that detects the amount of cooling water on the outlet side; 21 is a cooling water inlet thermometer that detects the cooling water temperature on the cooling water input side of the condenser 3; 22 is a cooling water inlet thermometer that detects the internal temperature of the condenser 3; The internal thermometer 23 is a cooling water outlet thermometer that detects the cooling water temperature on the cooling water outlet side of the condenser 3, and the detection signals of these measurement systems are sent to the condenser performance monitoring means 24, which will be described later. is input.
２４は復水器３の性能監視手段であり、性能監視手段２
４は冷却水流量計２０、冷却水入口温度計２１、器内温
度計２２、冷却水出口温度計２３等から時々刻々データ
を読取り、これらのデータより冷却水の流量、冷却前後
の温度差を求めて冷却管４の汚れ度や真空度を演算し、
且つ性能監視手段２４は熱交換器３の理論的性能を演算
して。24 is a performance monitoring means for the condenser 3;
4 reads data every moment from a cooling water flow meter 20, a cooling water inlet thermometer 21, an internal thermometer 22, a cooling water outlet thermometer 23, etc., and calculates the flow rate of cooling water and the temperature difference before and after cooling from these data. Calculate the degree of contamination and degree of vacuum of the cooling pipe 4,
In addition, the performance monitoring means 24 calculates the theoretical performance of the heat exchanger 3.
実測値の冷却管４の汚れ度、真空度の低下に基づく熱交
換器の性能劣化を判定する機能を有するものである。It has a function of determining performance deterioration of the heat exchanger based on actual measurement values of the degree of contamination of the cooling pipe 4 and a decrease in the degree of vacuum.
２５は性能監視手段２４からの判定信号に基づき管内清
掃装置１１１１’ を作動制御する清掃制御手段であり
、性能監視手段２４が冷却管４の性能劣化の所定レベル
を判定すると管内清掃装置ｉ１１’に作動制御信号を送
るように設定されている。Reference numeral 25 denotes a cleaning control means for controlling the operation of the pipe cleaning device 1111' based on the judgment signal from the performance monitoring means 24. When the performance monitoring means 24 determines a predetermined level of performance deterioration of the cooling pipe 4, the pipe cleaning device i11' is activated. It is configured to send an actuation control signal.
２６は性能監視手段２４からのデータ信号を入力して管
内の汚れ度合等を表示する表示計器。Reference numeral 26 denotes a display instrument that inputs the data signal from the performance monitoring means 24 and displays the degree of contamination inside the pipe.
２７は冷却管内の改善状況を記録する記録計、２８はこ
の改善状況を記録用紙に書込むプリンタである。27 is a recorder for recording the improvement status within the cooling pipe, and 28 is a printer for writing this improvement status on recording paper.
次に１本実施例の動作を説明する。Next, the operation of this embodiment will be explained.
常時において、冷却水は冷却水ポンプ１によって海から
汲み上げられ、正流側に制御された逆洗弁６を介して矢
印に示すように可動格子式濾過装置９と連通ずる送水系
配管２に入る。この流れ過程において、異物は濾過板１
０の格子面に付着して分離され冷却水のみが復水器３の
入口側水室７に導かれ、復水器冷却管４を通り、復水器
３内の蒸気と熱交換を行う、熱交換を終えた冷却水は復
水器３の出口側水室８を通り冷却水の排水系配管５に至
り、逆洗弁６を介して系外に排水される。At all times, cooling water is pumped up from the sea by a cooling water pump 1, and enters a water supply system piping 2 that communicates with a movable grid filtration device 9 as shown by the arrow via a backwash valve 6 controlled on the forward flow side. . In this flow process, foreign matter is removed from the filter plate 1.
Only the cooling water that adheres to the grid surface of 0 and is separated is led to the water chamber 7 on the inlet side of the condenser 3, passes through the condenser cooling pipe 4, and exchanges heat with the steam in the condenser 3. The cooling water that has undergone heat exchange passes through the outlet side water chamber 8 of the condenser 3, reaches the cooling water drainage system piping 5, and is drained out of the system via the backwash valve 6.
また、このような復水器３の稼動時には、濾過板１０に
おける冷却水の通過前後の差圧や冷却水の入口温度、出
口温度、冷却水流量、復水器３内の温度に関するデータ
が差圧計１７．冷却水温度計２１．２３、冷却水流量計
２０）復水器温度計２２等を介して性能監視手段２４に
入力される。In addition, when such a condenser 3 is in operation, data regarding the differential pressure before and after the cooling water passes through the filter plate 10, the inlet temperature of the cooling water, the outlet temperature, the flow rate of the cooling water, and the temperature inside the condenser 3 are generated. Pressure gauge 17. It is input to the performance monitoring means 24 via a cooling water thermometer 21, 23, a cooling water flow meter 20), a condenser thermometer 22, etc.
そして、差圧計１７の差圧データから濾過板１０の異物
付着度合が規定値以上に進行していると判定されると、
逆洗弁制御手段１８が逆洗弁６を反転制御する。従って
、冷却水は逆洗弁６、排水系配管５．冷却管４、送水系
配管２を順次通過し、この流れによって、可動格子式濾
過装置９の格子１０の面に付着した海棲生物等の異物は
格子面から分離され、逆洗弁６を通って系外に排出され
る。Then, when it is determined from the differential pressure data of the differential pressure gauge 17 that the degree of foreign matter adhesion to the filter plate 10 has progressed to a specified value or more,
The backwash valve control means 18 reversely controls the backwash valve 6. Therefore, the cooling water is supplied to the backwash valve 6, the drainage system piping 5. The flow sequentially passes through the cooling pipe 4 and the water supply system piping 2, and by this flow, foreign substances such as marine organisms adhering to the surface of the grid 10 of the movable grid filter device 9 are separated from the grid surface, and then passed through the backwash valve 6. and is discharged outside the system.
また、濾過装ｅ９に多量の異物が短時間に流入して、濾
過装置９に設けた差圧計１７の値が既述した規定値より
も高い規定値に達した時には、格子１０が回転機構を介
して自動的に回転して全開状態となる。従って、この場
合には、異物は大きな容積を有する復水器入口側水室７
に一時待避され。Further, when a large amount of foreign matter flows into the filtration device e9 in a short period of time and the value of the differential pressure gauge 17 provided in the filtration device 9 reaches a specified value higher than the above-mentioned specified value, the grating 10 activates the rotating mechanism. It automatically rotates to the fully open state. Therefore, in this case, the foreign matter is contained in the condenser inlet side water chamber 7 which has a large volume.
was temporarily evacuated.
その後、格子１０を開いたまま逆洗弁６が逆洗操作され
て異物が系外に排出される。この操作によって、多量の
異物が配管に流入した時においても格子１０が閉塞され
ることなく、従って冷却水が極度に減少して復水器がト
リップするような事態を防ぐことができる。Thereafter, the backwash valve 6 is operated for backwashing while the grid 10 remains open, and the foreign matter is discharged from the system. By this operation, even when a large amount of foreign matter flows into the piping, the grid 10 will not be blocked, thereby preventing a situation where the cooling water is extremely reduced and the condenser trips.
また、復水器の性能監視手段２４は送排水系配管２，５
及び復水器３に設けられた冷却水流量計２０、冷却本人
出口温度計２１．２３、復水器温度計２２等から時々刻
々データを読取り、復水器３の冷却管４の汚れ度や真空
度を演算し、復水器３の劣化進行度合を判定する。その
結果、実測値が規定値よりも低く、汚れ又は劣化が規定
以上に痛′
進行していることが′ｍＬ＆された場合には、アラーム
を発すると共に、その判定信号が清掃制御手段２５に送
られる。清掃制御手段２５はこの判定信号に基づき管内
清掃装置！ｌ ｌ’ を駆動せしめる。In addition, the performance monitoring means 24 of the condenser is
The data is read every moment from the cooling water flow meter 20, cooling outlet thermometer 21, 23, condenser thermometer 22, etc. installed in the condenser 3, and the degree of contamination of the cooling pipe 4 of the condenser 3 is measured. The degree of vacuum is calculated and the degree of deterioration of the condenser 3 is determined. As a result, if the actual measured value is lower than the specified value and it is determined that the dirt or deterioration has progressed beyond the specified value, an alarm is issued and a judgment signal is sent to the cleaning control means 25. It will be done. The cleaning control means 25 operates the pipe cleaning device based on this determination signal! l l' is driven.
従って、冷却管清掃用のスポンジボール１１が濾過装置
ｌ！９の出口側に′ＢＷｔされたスポンジボール投入管
１２から再＠環水と共に送水系配管２内に導入され、冷
却管４を冷却水と共に通過し、その間に冷却管４内面に
付着したスライム、スケール等を除去し冷却管４内を清
掃したあと出口側水室８を経て排水系配管５に至る。次
いで、スポンジボ−ル１１は捕集器１３により捕集され
て系外に取り出され、ボール循環ポンプ１４、ボール回
収器１５及びボール循環配管工６を通って再び復水器の
送水系配管２に投入される。またボール捕集器１３を出
た冷却水は逆洗弁６を通り系外に排出される。このよう
にして自動的に異物の除去と冷却管４の清掃が実施され
復水ａ３の性能改善が行われ、且つ１表示器２６を介し
て性能改善がなされた旨の表示がされると共に、記録計
２７、プリンタ２８を介して記録用紙に日報として残さ
れる。Therefore, the sponge ball 11 for cleaning the cooling pipe is the filtration device l! The sponge balls are introduced into the water supply system piping 2 along with the recycled water from the sponge ball input pipe 12 which has been loaded to the outlet side of the cooling pipe 9, and pass through the cooling pipe 4 together with the cooling water, during which slime adheres to the inner surface of the cooling pipe 4. After removing scale and the like and cleaning the inside of the cooling pipe 4, it passes through the outlet side water chamber 8 and reaches the drainage system piping 5. Next, the sponge balls 11 are collected by the collector 13 and taken out of the system, and are returned to the water supply system piping 2 of the condenser through the ball circulation pump 14, the ball collector 15, and the ball circulation plumber 6. Injected. Further, the cooling water exiting the ball collector 13 passes through the backwash valve 6 and is discharged to the outside of the system. In this way, the removal of foreign matter and the cleaning of the cooling pipe 4 are automatically carried out, the performance of the condensate a3 is improved, and the fact that the performance has been improved is displayed on the 1 display 26. The data is left as a daily report on recording paper via the recorder 27 and printer 28.
従って、本実施例によれば、熱交換器の冷却管へ異物が
侵入することを確実に防止すると共に、管内の汚れ度合
をチェックし且つ性能の劣化進行度合を常時監視して濾
過装置に付着した異物の除去、管内清掃を時機よく的確
に行うことができ。Therefore, according to this embodiment, it is possible to reliably prevent foreign matter from entering the cooling pipes of the heat exchanger, and also to check the degree of contamination inside the pipes and constantly monitor the progress of performance deterioration to prevent foreign matter from adhering to the filtration device. This allows for timely and accurate removal of foreign matter and cleaning of pipe interiors.
熱交換器の性能を高精度に維持することができる。The performance of the heat exchanger can be maintained with high precision.
更に本装置は、熱交換器性能監視手段を介して可動式濾
過機構、逆洗弁機構、冷却管清掃装置等をシステム的に
駆動制御することができるので、熱交換器を高効率に保
ち経済的に装置全体を運転させることができる。Furthermore, this device can systematically drive and control the movable filtration mechanism, backwash valve mechanism, cooling pipe cleaning device, etc. via the heat exchanger performance monitoring means, so the heat exchanger can be kept highly efficient and economical. The entire device can be operated automatically.
以上のように本発明によれば、熱交換器の性能を常時監
視しながら異物の除去と管内清掃を最適な状態でシステ
ム的に行い得ると共に、優れた性能改善を図り得る熱交
換器の性能改善装置を提供することができる。As described above, according to the present invention, the performance of the heat exchanger can be constantly monitored to remove foreign substances and clean the inside of the pipes in an optimal manner in a systematic manner, and to improve the performance of the heat exchanger. An improved device can be provided.
第１図は本発明の一実施例のシステム全体を示す概略構
成図である。
２・・・送水系配管、３・・・熱交換器、４・・・冷却
管、５・・・排水系配管、６・・・逆洗弁機構、７・・
・入口側水室、１０・・・濾過板、１１・・・スポンジ
ボール、１１′・・・冷却管清掃装置、１６・・・スポ
ンジボール系配管。
１７・・・差圧検出手段、１８・・・逆洗弁制御手段、
１９・・・濾過板開閉制御手段、２０・・・冷却水流社
計。
２１．２２．２３・・・温度計、２４・・・熱交換器性
能監視手段、２５・・・清掃制御手段。
代理人 弁理士 長崎博男 ′二、FIG. 1 is a schematic configuration diagram showing the entire system of an embodiment of the present invention. 2... Water supply system piping, 3... Heat exchanger, 4... Cooling pipe, 5... Drainage system piping, 6... Backwash valve mechanism, 7...
- Inlet side water chamber, 10... Filter plate, 11... Sponge ball, 11'... Cooling pipe cleaning device, 16... Sponge ball system piping. 17... Differential pressure detection means, 18... Backwash valve control means,
19... Filter plate opening/closing control means, 20... Cooling water flow meter. 21.22.23... Thermometer, 24... Heat exchanger performance monitoring means, 25... Cleaning control means. Agent: Patent attorney Hiroo Nagasaki '2,
Claims (1)
水を排水する排水系配管との交叉位置に冷却水の流れを
正逆切換する逆洗弁機構を設けると共に、前記送水系配
管における前記逆洗弁機構と前記熱交換器の入口側水室
との間に貝等の異物の侵入を阻止する濾過板を開閉機構
を介して開閉可能に設置し、且つ前記送水系配管及び前
記排水系配管にはスポンジボールをこれらの配管及びス
ポンジボール系配管を介して前記熱交換器の冷却管内に
循環させる冷却管清掃装置を設け、更に前記逆洗弁機構
、前記冷却管清掃装置及び前記濾過板の制御系は、前記
濾過板を通過する冷却水の通過前後の差圧を検出する差
圧検出手段及び前記熱交換器の冷却水量、冷却水の冷却
管通過前後の温度、前記熱交換器の器内温度等を検出す
る各検出手段と、前記差圧検出手段の測定データに基づ
き前記濾過板への異物の付着度合を演算し且つ前記各検
出手段の測定データから前記熱交換器の冷却管の汚れ度
合を演算して前記熱交換器の伝熱性能を監視する熱交換
器性能監視手段と、前記差圧検出手段の検出値が規定値
になると前記熱交換器性能監視手段からの判定信号に基
づき前記逆洗弁機構を反転制御する逆洗弁制御手段と、
前記差圧検出手段の検出値が前記規定値以上の所定の差
圧値に達すると前記濾過板を開制御する濾過板開閉制御
手段と、前記熱交換器性能監視手段が前記冷却管の汚れ
度合から該冷却管の伝熱性能の低下を判定した場合に判
定信号に基づき前記冷却管清掃装置を作動制御する清掃
制御手段とにより構成してなることを特徴とする熱換器
の性能改善装置。1. A backwash valve mechanism for switching the flow of cooling water between forward and reverse is provided at the intersection of the water supply system piping that sends cooling water to the cooling pipes of the heat exchanger and the drainage system piping that drains the cooling water, and the water supply system A filter plate that prevents foreign matter such as shellfish from entering between the backwash valve mechanism in the piping and the water chamber on the inlet side of the heat exchanger is installed so as to be openable and closable via an opening/closing mechanism, and the water supply system piping and The drainage system piping is provided with a cooling pipe cleaning device that circulates sponge balls into the cooling pipe of the heat exchanger through these piping and the sponge ball system piping, and further includes the backwash valve mechanism, the cooling pipe cleaning device, and The control system for the filter plate includes a differential pressure detection means for detecting the differential pressure before and after the cooling water passes through the filter plate, the amount of cooling water in the heat exchanger, the temperature before and after the cooling water passes through the cooling pipe, and the temperature of the cooling water before and after passing through the cooling pipe. The degree of adhesion of foreign matter to the filter plate is calculated based on the measurement data of each detection means for detecting the internal temperature, etc. of the exchanger and the differential pressure detection means, and the degree of adhesion of foreign matter to the filter plate is calculated based on the measurement data of each of the detection means. heat exchanger performance monitoring means for calculating the degree of contamination of the cooling pipes and monitoring the heat transfer performance of the heat exchanger; and when the detected value of the differential pressure detection means reaches a specified value, the heat exchanger performance monitoring means backwash valve control means for controlling the backwash valve mechanism in reverse based on the determination signal;
A filter plate opening/closing control means controls opening of the filter plate when the detected value of the differential pressure detection means reaches a predetermined differential pressure value equal to or higher than the specified value, and the heat exchanger performance monitoring means detects the degree of contamination of the cooling pipe. a cleaning control means for controlling the operation of the cooling pipe cleaning device based on a determination signal when it is determined that the heat transfer performance of the cooling pipe has deteriorated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60236991A JPH06105158B2 (en) | 1985-10-23 | 1985-10-23 | Heat exchanger performance improvement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60236991A JPH06105158B2 (en) | 1985-10-23 | 1985-10-23 | Heat exchanger performance improvement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62123297A true JPS62123297A (en) | 1987-06-04 |
| JPH06105158B2 JPH06105158B2 (en) | 1994-12-21 |
Family
ID=17008767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60236991A Expired - Lifetime JPH06105158B2 (en) | 1985-10-23 | 1985-10-23 | Heat exchanger performance improvement device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06105158B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013008385A (en) * | 2006-09-28 | 2013-01-10 | Fisher Rosemount Systems Inc | Prevention of abnormal state of heat exchanger |
| JP2017075752A (en) * | 2015-10-16 | 2017-04-20 | 株式会社テイエルブイ | Heat exchanger |
| CN106931532A (en) * | 2017-04-27 | 2017-07-07 | 海信科龙电器股份有限公司 | Dehumidifier |
| CN114307240A (en) * | 2021-12-31 | 2022-04-12 | 云南森美达生物科技股份有限公司 | Extraction and preparation method of natural camphor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5714193A (en) * | 1980-06-30 | 1982-01-25 | Hitachi Ltd | Distributing and controlling method of cleaning balls |
| JPS57157998A (en) * | 1981-03-25 | 1982-09-29 | Toshiba Corp | Apparatus for automatically washing cooler |
| JPS59215599A (en) * | 1983-05-23 | 1984-12-05 | Toshiba Corp | Operation of ball_cleaning apparatus |
| JPS6030635U (en) * | 1983-08-05 | 1985-03-01 | 日本電気アイシ−マイコンシステム株式会社 | flip flop circuit |
-
1985
- 1985-10-23 JP JP60236991A patent/JPH06105158B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5714193A (en) * | 1980-06-30 | 1982-01-25 | Hitachi Ltd | Distributing and controlling method of cleaning balls |
| JPS57157998A (en) * | 1981-03-25 | 1982-09-29 | Toshiba Corp | Apparatus for automatically washing cooler |
| JPS59215599A (en) * | 1983-05-23 | 1984-12-05 | Toshiba Corp | Operation of ball_cleaning apparatus |
| JPS6030635U (en) * | 1983-08-05 | 1985-03-01 | 日本電気アイシ−マイコンシステム株式会社 | flip flop circuit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013008385A (en) * | 2006-09-28 | 2013-01-10 | Fisher Rosemount Systems Inc | Prevention of abnormal state of heat exchanger |
| JP2017075752A (en) * | 2015-10-16 | 2017-04-20 | 株式会社テイエルブイ | Heat exchanger |
| CN106931532A (en) * | 2017-04-27 | 2017-07-07 | 海信科龙电器股份有限公司 | Dehumidifier |
| CN114307240A (en) * | 2021-12-31 | 2022-04-12 | 云南森美达生物科技股份有限公司 | Extraction and preparation method of natural camphor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06105158B2 (en) | 1994-12-21 |
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| EXPY | Cancellation because of completion of term |