JPS63156997A - Tube leakage sensing device in sea water cooling type heat exchanger - Google Patents
Tube leakage sensing device in sea water cooling type heat exchangerInfo
- Publication number
- JPS63156997A JPS63156997A JP30566186A JP30566186A JPS63156997A JP S63156997 A JPS63156997 A JP S63156997A JP 30566186 A JP30566186 A JP 30566186A JP 30566186 A JP30566186 A JP 30566186A JP S63156997 A JPS63156997 A JP S63156997A
- Authority
- JP
- Japan
- Prior art keywords
- seat
- heat exchanger
- sampling
- fresh water
- freshwater
- 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
- 239000013535 sea water Substances 0.000 title claims description 30
- 238000001816 cooling Methods 0.000 title description 5
- 239000013505 freshwater Substances 0.000 claims abstract description 79
- 238000005070 sampling Methods 0.000 claims abstract description 57
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 29
- 239000000460 chlorine Substances 0.000 claims abstract description 29
- 238000001514 detection method Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 28
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 10
- 238000000605 extraction Methods 0.000 description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 6
- 229910017604 nitric acid Inorganic materials 0.000 description 6
- 229910001961 silver nitrate Inorganic materials 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012488 sample solution Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
し発明の目的］
（産業上の利用分野）
本発明は例えば原子力発電所における冷却水系熱交換器
等に適用される海水冷却型熱交換器のチューブ１４洩検
出装置に関する。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a tube 14 leak detection device for a seawater-cooled heat exchanger, which is applied to a cooling water system heat exchanger in a nuclear power plant, for example. .
（従来の技術）
一般に原子力発電所における冷却水系熱交換器は、被冷
却流体として海水を使用しているため熱交換器にチュー
ブ漏洩が発生した場合、冷却水中に満水が流入する可能
性がある。そして、冷却水中に海水が流入すると、冷却
水は通常防良剤入りの淡水を使用していることから海水
中の塩素が淡水中に混入し、防食効果が低下するなどの
不具合が発生する。(Prior technology) Cooling water heat exchangers in nuclear power plants generally use seawater as the fluid to be cooled, so if a tube leak occurs in the heat exchanger, there is a possibility that full water will flow into the cooling water. . If seawater flows into the cooling water, the chlorine in the seawater will mix into the freshwater, causing problems such as a reduction in the anti-corrosion effect, since the cooling water is usually freshwater containing an anti-corrosion agent.
このような不具合を未然に防止するために原子力発電所
では、熱交換器の冷却水出口から流出する淡水中の塩素
濃度を定期的に測定してチューブ漏洩の監視を行ってい
るが、測定傾度の面からも発見までに時間がかかり、発
見時点ではチューブ漏洩の規模が大きくなるという問題
があった。To prevent such problems, nuclear power plants regularly measure the chlorine concentration in the fresh water flowing out from the cooling water outlet of the heat exchanger to monitor tube leakage, but the measurement slope There was also the problem that it took a long time to discover the leakage, and by the time it was discovered, the scale of the tube leakage had become large.
また、チューブ漏洩の初期はピンホール状の腐食である
ことから淡水中あるいは海水中の不純物（例、えばゴミ
、錆等）によってピンホール箇所が塞がれ、チューブ漏
洩を見落とす可能性もあり、さらにチューブ漏洩を判断
するためにはある程度熱交換器内の塩素分上昇傾向を確
認する必要があり、熱交換器内に海水のみをインサービ
スし、海水を強制的に淡水中へ流入させる方法を採用し
ている。しかしながら、熱交換器の淡水出入口弁を全開
として海水系のみを流通させていることからチューブ漏
洩の箇所（例えば熱交換器の胴上部）によっては海水を
含む試料を取出すのに相当な時間を費やすなどの問題も
あった。In addition, since the initial stage of tube leakage is corrosion in the form of pinholes, the pinholes may be blocked by impurities in freshwater or seawater (e.g., dirt, rust, etc.) and tube leakage may be overlooked. Furthermore, in order to determine tube leakage, it is necessary to confirm the tendency of the chlorine content in the heat exchanger to increase to some extent, so we recommend a method in which only seawater is in-service in the heat exchanger and the seawater is forced to flow into fresh water. We are hiring. However, since the freshwater inlet/outlet valve of the heat exchanger is fully opened and only seawater is allowed to flow, it takes a considerable amount of time to extract samples containing seawater depending on the location of the tube leak (for example, the upper part of the heat exchanger). There were also other problems.
（発明が解決しようとする問題点）
以上のように従来においては熱交換器の淡水出口から流
出する淡水中の塩素濃度を定期的に測定してチューブ漏
洩の監視を行っているため、チューブ漏洩の発見に時間
がかかり、チューブ漏洩の規模が大きくなるなどの問題
があった。(Problems to be Solved by the Invention) As mentioned above, in the past, tube leakage was monitored by periodically measuring the chlorine concentration in the fresh water flowing out from the fresh water outlet of the heat exchanger. There were problems such as it took time to discover tube leaks and the scale of tube leaks increased.
本発明はこのような問題点に着目してなされたもので、
その目的とするところは、熱交換器のチューブ漏洩を早
期に検出することができる海水冷却型熱交換器のチュー
ブ漏洩検出５Ａ置を提供することにある。The present invention was made by focusing on these problems.
The purpose is to provide a tube leakage detection device 5A for a seawater cooled heat exchanger that can detect tube leakage in a heat exchanger at an early stage.
［発明の構成］
（問題点を解決するための手段）
上記問題点を解決するために本発明は、チューブ側を海
水が胴側を淡水が流れる海水冷却型熱交換器の淡水出入
口に設けられた淡水出ロ側すンプリング座および淡水入
口側サンプリング座と、これらのサンプリング座に接続
し前記熱交換器より流出する淡水の一部を循環させるサ
ンプリング取出し用循環配管と、このサンプリング取出
し用循環配管に設けられタイマー等により一定時間毎に
流路が切替わる三方切換弁と、この三方切換弁より取出
されたサンプリング中の塩素濃度を検出する塩素濃度分
析計とを具備したことを特徴とするものである。[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, the present invention is provided at the fresh water inlet/outlet of a seawater-cooled heat exchanger where seawater flows through the tube side and freshwater flows through the body side. a sampling seat on the freshwater outlet side and a sampling seat on the freshwater inlet side, a circulation pipe for sampling extraction connected to these sampling seats and circulating a part of the fresh water flowing out from the heat exchanger, and a circulation pipe for taking out the sampling. It is characterized by comprising a three-way switching valve that is installed in the pipe and switches the flow path at regular intervals using a timer or the like, and a chlorine concentration analyzer that detects the chlorine concentration in the sample taken out from the three-way switching valve. It is.
（作 用）
本発明においては海水冷却型熱交換器より流出°する淡
水の一部を熱交換器の淡水出口に設けられた淡水出ロ側
すンプリング座より取出し、サンブリ・ング取出し用循
環配管を経由して熱交換器の淡水入口に設けられた淡水
入口側サンプリング座へ戻すとともに、上記サンプリン
グ取出し用循環配管に設けられた三方切換弁の流路を一
定時間毎に切替え、この三方切換弁より取出されたサン
プリング中の塩素濃度を塩素濃度分析計で検出すること
により、チューブ漏洩の発生を早期に検出することがで
きる。(Function) In the present invention, a part of the fresh water flowing out from the seawater cooling type heat exchanger is taken out from the fresh water outlet side spring seat provided at the fresh water outlet of the heat exchanger, and the circulation pipe for taking out the sample is removed. is returned to the freshwater inlet side sampling seat provided at the freshwater inlet of the heat exchanger, and the flow path of the three-way switching valve provided in the circulation piping for sampling is switched at regular intervals, and this three-way switching valve By detecting the chlorine concentration in the sample taken out using a chlorine concentration analyzer, the occurrence of tube leakage can be detected at an early stage.
（実 施 例）
以下、図面を参照して本発明の実施例について説明する
。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例を示すチューブ漏洩検出装置
の構成図で、図中１は海水冷却型熱交換器である。この
熱交換器１は第２図に示すようにチューブ３側を海水が
胴側を淡水が流れる構造となっており、海水入口ライン
２より流入した海水はチューブ３内を通って海水出口ラ
イン４へ流出し、淡水入口ライン５より流入した淡水は
仕切板６の間を通って淡水出口ライン７へ流出するよう
になっている。そして、熱交換器１内の淡水側圧力は海
水側圧力よりも高い設計となっており、チューブ漏洩が
発生した場合でも淡水が海水側へ流入しないｌＩ３！Ｉ
となっている。また、上記海水入口ライン２．海水出口
ライン４．淡水入口ライン５および淡水出口ライン７に
はそれぞれ海水人口弁８、海水出口弁９．淡水人口弁１
０．淡水出口弁１１が設けられ、熱交換器１を系統から
隔離できるようになっている。FIG. 1 is a block diagram of a tube leakage detection device showing an embodiment of the present invention, and numeral 1 in the figure is a seawater-cooled heat exchanger. As shown in Fig. 2, this heat exchanger 1 has a structure in which seawater flows through the tube 3 side and freshwater flows through the body side, and the seawater flowing in from the seawater inlet line 2 passes through the tube 3 and flows through the seawater outlet line 4. The fresh water that flows into the fresh water inlet line 5 passes between the partition plates 6 and flows out to the fresh water outlet line 7. The pressure on the freshwater side of the heat exchanger 1 is designed to be higher than the pressure on the seawater side, so that even if a tube leak occurs, freshwater will not flow into the seawater side lI3! I
It becomes. In addition, the above seawater inlet line 2. Seawater outlet line 4. The freshwater inlet line 5 and the freshwater outlet line 7 are provided with a seawater population valve 8 and a seawater outlet valve 9, respectively. Freshwater artificial dialect 1
0. A fresh water outlet valve 11 is provided to allow isolation of the heat exchanger 1 from the system.
上記熱交換器１の淡水出入口には淡水出ロ側すンプリン
グ座１２および淡水入口側サンプリング座１３が設けら
れ、また熱交換器１の胴上部及び胴下部には胴上部側サ
ンプリング座１４および胴下部側サンプリング座１５が
設けられている。上記淡水出ロ側すンプリング座１２お
よび淡水入口側サンプリング座１３にはサンプリング取
出し用循環配管１６が接続されており、熱交換器１より
流出する淡水の一部をサンプリングポンプ１７により三
方切換弁１８を介して熱交換器１の淡水入口側へ戻す構
成となっている。A fresh water outlet side sampling seat 12 and a fresh water inlet side sampling seat 13 are provided at the fresh water inlet and outlet of the heat exchanger 1, and a body upper side sampling seat 14 and a body upper body side sampling seat 14 are provided at the upper and lower body parts of the heat exchanger 1. A lower sampling seat 15 is provided. A circulation pipe 16 for sampling is connected to the freshwater outlet side sampling seat 12 and the freshwater inlet side sampling seat 13, and a part of the freshwater flowing out from the heat exchanger 1 is transferred to a three-way switching valve 18 by a sampling pump 17. The fresh water is returned to the fresh water inlet side of the heat exchanger 1 via the .
上記三方切換弁１８は図示しないタイマー等により一定
時間毎に流路が切替わり、サンプリング取出し用循環配
管１６を流れる淡水の一部を配管１９を介してサンプル
タンク２０へ流すようになっている。このサンプルタン
ク２０の底部には塩素濃度分析計２３と接続したサンプ
ル導入配管２２が接続されており、サンプルタンク出口
弁２１が開となることによりサンプルタンク２０内のサ
ンプル溶液がサンプル導入配管２１を介して塩素濃度分
析計２３へ導入する構成となっている。The flow path of the three-way switching valve 18 is switched at regular intervals by a timer or the like (not shown), so that a portion of the fresh water flowing through the sampling extraction circulation pipe 16 is allowed to flow through the pipe 19 to the sample tank 20. A sample introduction pipe 22 connected to a chlorine concentration analyzer 23 is connected to the bottom of the sample tank 20. When the sample tank outlet valve 21 is opened, the sample solution in the sample tank 20 flows through the sample introduction pipe 21. It is configured to be introduced into the chlorine concentration analyzer 23 via the chlorine concentration analyzer 23.
上記塩素濃度分析計２３には硝酸溶液タンク２４および
硝酸銀溶液タンク２５がそれぞれ硝酸供給弁２６および
硝酸銀供給弁２７を介して接続されている。また、塩素
ｉ１度分析計２３にはサンプル溶液攪拌用の超音波加振
器２８が設けられ、さらに塩素濃度検出値を記録するた
めの記録装置２９が接続されている。なお、図中３０は
圧力計、３１は熱交換器淡水側ベント弁、３２及び３３
は塩素濃度分析計２３に設けられたベント弁とドレン弁
、３４はサンプルタンクオーバーフローラインである。A nitric acid solution tank 24 and a silver nitrate solution tank 25 are connected to the chlorine concentration analyzer 23 via a nitric acid supply valve 26 and a silver nitrate supply valve 27, respectively. Further, the chlorine i1 degree analyzer 23 is provided with an ultrasonic vibrator 28 for stirring the sample solution, and is further connected to a recording device 29 for recording the detected chlorine concentration value. In addition, in the figure, 30 is a pressure gauge, 31 is a heat exchanger freshwater side vent valve, 32 and 33
are a vent valve and a drain valve provided in the chlorine concentration analyzer 23, and 34 is a sample tank overflow line.
次にこのように構成された本装置の作用について説明す
る。熱交換器１より流出する淡水の一部は淡水出口側サ
ンプリング座１２よりサンプル取出し用循環配管１６に
流入し、サンプリングポンプ１７により三方切換弁１８
→淡水入口側サンプリング！！１３→熱交換器１→淡水
出口側サンプリング座１２→サンプル取出し用循環配管
１６→サンプリングポンプ１７→三方切換弁１８を循環
する。このとき、三方切換弁１８は一定時間毎にタイマ
ー作動し、循環中のサンプルを配管１つを介してサンプ
ルタンク２０へ導入する。サンプルタンク２０に導入さ
れたサンプルはサンプルタンク出口弁２１が開となるこ
とによりサンプル導入配管２２を介して塩素濃度分析計
２３に導入され、次の手順でサンプル中の塩素濃度が測
定される。Next, the operation of the apparatus configured as described above will be explained. A part of the fresh water flowing out from the heat exchanger 1 flows into the sample extraction circulation pipe 16 from the sampling seat 12 on the fresh water outlet side, and is transferred to the three-way switching valve 18 by the sampling pump 17.
→Freshwater inlet side sampling! ! 13→heat exchanger 1→freshwater outlet side sampling seat 12→sample extraction circulation piping 16→sampling pump 17→three-way switching valve 18. At this time, the three-way switching valve 18 operates on a timer at regular intervals, and the sample being circulated is introduced into the sample tank 20 through one pipe. The sample introduced into the sample tank 20 is introduced into the chlorine concentration analyzer 23 via the sample introduction pipe 22 by opening the sample tank outlet valve 21, and the chlorine concentration in the sample is measured in the following procedure.
まず、塩素濃度分析計２３内のサンプルに硝酸溶液タン
ク２４の硝酸溶液を硝酸供給弁２６を介して数秒間滴下
し、さらにｌ１１１酸銀溶液タンク２５の硝酸銀溶液を
硝酸銀供給弁２７を介して数秒間滴下する。その後、塩
素ｍａ分析計２３内のサンプルを超音波加振器２８で攪
拌し、塩化銀とじて生成したサンプルの沈澱層を比色す
ることにより透過度を求め、この透過度を塩素濃度に換
算して記録装Ｗ１２９へ出力する。そして、測定終了後
はベント弁３２およびドレン弁３３を開とし、塩素ａｒ
ｔ分析計２３内のサンプルを排出する。First, the nitric acid solution in the nitric acid solution tank 24 is dripped onto the sample in the chlorine concentration analyzer 23 for several seconds via the nitric acid supply valve 26, and then the silver nitrate solution in the l111 silver solution tank 25 is added dropwise via the silver nitrate supply valve 27. Drip for seconds. After that, the sample in the chlorine MA analyzer 23 is stirred with the ultrasonic vibrator 28, and the precipitated layer of the sample formed with silver chloride is color-compared to determine the transmittance, and this transmittance is converted into the chlorine concentration. and outputs it to the recording device W129. After the measurement is completed, the vent valve 32 and drain valve 33 are opened, and the chlorine ar
t Eject the sample in the analyzer 23.
上記の濃度測定を一定時間毎に行うことにより熱交換器
１の淡水出口より流出する淡水中の塩素濃度を測定でき
るので、熱交換器１内にチューブ漏洩が発生したか否か
をＶｆＩ認できる。そして、チューブ漏洩が確認された
場合は熱交換器１に設けられた胴上部側サンプリング座
１４および胴下部側サンプリング座１５を利用して次の
方法によりチューブ漏洩の発生箇所を１認できる。By performing the above concentration measurement at regular intervals, it is possible to measure the chlorine concentration in the fresh water flowing out from the fresh water outlet of the heat exchanger 1, so it is possible to determine whether or not tube leakage has occurred in the heat exchanger 1. . If tube leakage is confirmed, the location where the tube leakage occurs can be immediately identified by the following method using the upper body sampling seat 14 and the lower body sampling seat 15 provided on the heat exchanger 1.
まず、淡水入口ライン５および淡水出口ライン７に設け
られた淡水人口弁１０および淡水出口弁１１を閉じ、熱
交換器１の淡水側を隔離すると共に熱交換器１の淡水側
ベント弁３１を開にして淡水側を大気圧とする。なお、
大気圧とした後はベント弁３１を閉じる。また、このと
き熱交換器１の海水側は流通させておく。次にサンプリ
ング取出し用循環配管１６のサンプル取出し口を胴上部
側サンプリング座１４に接続し、サンプリング取出し用
循環配管１６のサンプル戻し口を淡水出口側サンプリン
グ座１２に接続する。そして、この状態で熱交換器１内
の淡水をサンプリングポンプ１７により胴上部側サンプ
リング座１４→サンプリング取出し用循環配管１６→三
方切換弁１８→淡水出ロ側サンプリング座１２を循環さ
せ、三方切換弁１８の流路を一定時間毎に切替えること
によりチューブ漏洩が胴上部側に発生しているが否かを
確認できる。First, the freshwater intake valve 10 and freshwater outlet valve 11 provided in the freshwater inlet line 5 and freshwater outlet line 7 are closed, the freshwater side of the heat exchanger 1 is isolated, and the freshwater side vent valve 31 of the heat exchanger 1 is opened. and the freshwater side to atmospheric pressure. In addition,
After reaching atmospheric pressure, the vent valve 31 is closed. Moreover, at this time, the seawater side of the heat exchanger 1 is allowed to flow. Next, the sample take-out port of the circulation pipe 16 for sampling take-out is connected to the sampling seat 14 on the upper body side, and the sample return port of the circulation pipe 16 for sampling take-out is connected to the sampling seat 12 on the freshwater outlet side. In this state, the fresh water in the heat exchanger 1 is circulated by the sampling pump 17 through the sampling seat 14 on the upper part of the body → the circulation piping 16 for sampling extraction → the three-way switching valve 18 → the sampling seat 12 on the freshwater outlet side, and the three-way switching valve By switching the flow paths 18 at regular intervals, it is possible to check whether tube leakage is occurring on the upper part of the body.
また、熱交換器１の胴下部側を監視する場合はサンプリ
ング取出し用循環配管１６のサンプル取出し口を胴下部
側サンプリング座１５に接続し、サンプリング取出し用
循環配管１６のサンプル戻し口を淡水入口側サンプリン
グ座１３に接続することにより上記と同様の方法でチュ
ーブ漏洩が胴上８Ｉ１ｍに発生しているか否かを確認で
きる。さらに、本実施例では熱交換器１の淡水側及び海
水側を隔離し、サンプリングポンプ１，７で淡水側に運
転圧をかけ、淡水側の圧力を圧力計３０で監視すること
によりチューブ３の健全性を確認できる。In addition, when monitoring the lower body side of the heat exchanger 1, connect the sample take-out port of the circulation piping 16 for sampling take-out to the sampling seat 15 on the lower body side, and connect the sample return port of the circulation pipe 16 for sampling take-out to the fresh water inlet side. By connecting to the sampling seat 13, it can be confirmed whether or not tube leakage has occurred on the upper part of the trunk 8I1m in the same manner as described above. Furthermore, in this embodiment, the freshwater side and the seawater side of the heat exchanger 1 are isolated, the sampling pumps 1 and 7 apply operating pressure to the freshwater side, and the pressure on the freshwater side is monitored with a pressure gauge 30. You can check the health.
上述したように本実施例では、海水冷却型熱交換器１よ
り流出する淡水の一部を熱交換器１の淡水出口に設けら
れた淡水出口側サンプリング座１２より取出し、サンプ
リング取出し用循環配管１６を経由して熱交換器１の淡
水入口に設けられた淡水入口側サンプリング座１３へ戻
すとともに、上記サンプリング取出し用循環配管１６に
設けられた三方切換弁１８の流路を一定時間毎に切替え
、この三方切換弁１８より取出されたサンプリング中の
塩素濃度を塩素濃度分析計２３で検出することにより、
チューブ漏洩の発生の有無を早期に検出することができ
る。As described above, in this embodiment, a part of the fresh water flowing out from the seawater cooling type heat exchanger 1 is taken out from the fresh water outlet side sampling seat 12 provided at the fresh water outlet of the heat exchanger 1, and a part of the fresh water flowing out from the seawater cooling type heat exchanger 1 is taken out from the fresh water outlet side sampling seat 12, is returned to the freshwater inlet side sampling seat 13 provided at the freshwater inlet of the heat exchanger 1 via the above, and the flow path of the three-way switching valve 18 provided in the sampling extraction circulation pipe 16 is switched at regular intervals, By detecting the chlorine concentration in the sample taken out from the three-way switching valve 18 with the chlorine concentration analyzer 23,
The presence or absence of tube leakage can be detected at an early stage.
［発明の効果］
以上説明したように本発明によれば、チューブ漏洩の発
生の有無を早期に検出できるのでチューブ漏洩による種
々の弊害を防止でき、熱交換器の信頼性を大幅に向上さ
せることができる。[Effects of the Invention] As explained above, according to the present invention, the presence or absence of tube leakage can be detected at an early stage, so various adverse effects caused by tube leakage can be prevented, and the reliability of the heat exchanger can be greatly improved. I can do it.
第１図および第２図は本発明の一実施例を示し、第１図
はチューブ漏洩検出装置の構成図、第２図は海水冷却型
熱交換器の内部構造を示す断面図である。
１・・・海水冷却型熱交換器、２・・・海水入口ライン
、３・・・チューブ、４・・・海水出口ライン、５・・
・淡水入口ライン、７・・・淡水出口ライン、１２・・
・淡水出口側サンプリング座、１３・・・淡水入口側サ
ンプリング座、１４・・・胴上部側サンプリング座、１
５・・・胴下部側サンプリング座、１６・・・サンプリ
ング取出し用循環配管、１７・・・サンプリングポンプ
、１８・・・三方切換弁、２０・・・サンプリングタン
ク、２３・・・塩素濃度分析計、２４・・・硝酸溶液タ
ンク、２５・・・硝酸銀溶液タンク。FIGS. 1 and 2 show an embodiment of the present invention, with FIG. 1 being a configuration diagram of a tube leak detection device, and FIG. 2 being a sectional view showing the internal structure of a seawater-cooled heat exchanger. 1...Seawater cooling type heat exchanger, 2...Seawater inlet line, 3...Tube, 4...Seawater outlet line, 5...
・Freshwater inlet line, 7...Freshwater outlet line, 12...
・Freshwater outlet side sampling seat, 13... Freshwater inlet side sampling seat, 14... Torso upper side sampling seat, 1
5... Sampling seat on the lower body side, 16... Circulation piping for sampling extraction, 17... Sampling pump, 18... Three-way switching valve, 20... Sampling tank, 23... Chlorine concentration analyzer , 24... Nitric acid solution tank, 25... Silver nitrate solution tank.
Claims (1)
換器の淡水出入口に設けられた淡水出口側サンプリング
座および淡水入口側サンプリング座と、これらのサンプ
リング座に接続し前記熱交換器より流出する淡水の一部
を循環させるサンプリング取出し用循環配管と、このサ
ンプリング取出し用循環配管に設けられタイマー等によ
り一定時間毎に流路が切替わる三方切換弁と、この三方
切換弁より取出されたサンプリング中の塩素濃度を検出
する塩素濃度分析計とを具備したことを特徴とする海水
冷却型熱交換器のチューブ漏洩検出装置。A sampling seat on the freshwater outlet side and a sampling seat on the freshwater inlet side are provided at the freshwater inlet/outlet of a seawater-cooled heat exchanger where seawater flows on the tube side and freshwater flows on the body side, and a sampling seat is connected to these sampling seats and flows out from the heat exchanger. A sampling take-out circulation pipe that circulates a portion of the fresh water to be taken out, a three-way switching valve installed in this sampling take-out circulation pipe whose flow path is switched at regular intervals by a timer, etc., and a sampling taken out from the three-way switching valve. A tube leak detection device for a seawater-cooled heat exchanger, characterized in that it is equipped with a chlorine concentration analyzer for detecting the chlorine concentration inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30566186A JPS63156997A (en) | 1986-12-22 | 1986-12-22 | Tube leakage sensing device in sea water cooling type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30566186A JPS63156997A (en) | 1986-12-22 | 1986-12-22 | Tube leakage sensing device in sea water cooling type heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63156997A true JPS63156997A (en) | 1988-06-30 |
Family
ID=17947823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30566186A Pending JPS63156997A (en) | 1986-12-22 | 1986-12-22 | Tube leakage sensing device in sea water cooling type heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63156997A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995016900A1 (en) * | 1993-12-14 | 1995-06-22 | Somerset Technical Laboratories Limited | Leakage detection |
| JP2012202641A (en) * | 2011-03-28 | 2012-10-22 | Jfe Engineering Corp | Gas heating system |
-
1986
- 1986-12-22 JP JP30566186A patent/JPS63156997A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995016900A1 (en) * | 1993-12-14 | 1995-06-22 | Somerset Technical Laboratories Limited | Leakage detection |
| GB2291192A (en) * | 1993-12-14 | 1996-01-17 | Somerset Technical Lab Ltd | Leakage detection |
| GB2291192B (en) * | 1993-12-14 | 1996-06-12 | Somerset Technical Lab Ltd | Leakage detection |
| US6044692A (en) * | 1993-12-14 | 2000-04-04 | Somerset Technical Laboratories Limited | Ultrasonic method of testing a plate heat exchanger for leakage |
| US6062068A (en) * | 1993-12-14 | 2000-05-16 | Somerset Technical Laboratories Ltd. | Leakage testing method for a plate heat exchanger |
| EP1003024A1 (en) * | 1993-12-14 | 2000-05-24 | Somerset Technical Laboratories Limited | Leakage detection |
| JP2012202641A (en) * | 2011-03-28 | 2012-10-22 | Jfe Engineering Corp | Gas heating system |
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