JPH02192598A - Fluid leakage detecting device for plate type heat exchanger - Google Patents
Fluid leakage detecting device for plate type heat exchangerInfo
- Publication number
- JPH02192598A JPH02192598A JP1036989A JP1036989A JPH02192598A JP H02192598 A JPH02192598 A JP H02192598A JP 1036989 A JP1036989 A JP 1036989A JP 1036989 A JP1036989 A JP 1036989A JP H02192598 A JPH02192598 A JP H02192598A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchange
- ejector
- fluid
- heat exchanger
- exchange fluid
- 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
- 239000012530 fluid Substances 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 30
- 229910021529 ammonia Inorganic materials 0.000 abstract description 15
- 239000013535 sea water Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/005—Arrangements for preventing direct contact between different heat-exchange media
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、プレート式熱交換器における熱交換流体の
漏れの有無及び漏れ量を検出し、熱交換流体の漏洩監視
をするための装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a device for detecting the presence or absence of leakage of heat exchange fluid and the amount of leakage in a plate heat exchanger, and monitoring the leakage of heat exchange fluid. .
プレート式熱交換器の漏洩管理を行うための従来の構造
に関して、特開昭63−180084号公報に記載があ
る。A conventional structure for controlling leakage of a plate heat exchanger is described in JP-A-63-180084.
この発明は、上記従来の構造をさらに発展させて、漏洩
管理を一層実際的におこなうことができるようにするこ
とをその主な目的としている。The main purpose of the present invention is to further develop the above-mentioned conventional structure so that leakage management can be carried out more practically.
この発明のプレート式熱交換器の流体漏れ検出装置は、
相互間にシェル内空間に対して閉じた通路と開放した通
路とを交互に形成した成層プレート群と、これを収容す
るシェルとからなり、第一、の熱交換流体は一旦シェル
の内部空間に供給されそこから各開放した通路に流入し
、第二の熱交換流体は閉じた通路に供給され、この閉じ
た通路はプレートをM通ずる通孔を閉じて互いに連通し
ており、しかして、隣り合う通路内を流れる第一及び第
二の熱交換流体間でプレートを介して間接的に熱交換を
行われるようにしたプレート式熱交換器において、
閉じた通路に熱交換流体を導入し、もしくはこの通路か
ら熱交換流体を導出するための前記通孔の周囲に大小一
対の環状のガスケットを装着し、これらのガスケット間
に形成される環状の空所をプレートに穿った小孔を通じ
て互いに連通せしめるとともに、前記環状の空所を外部
に設けた容器に接続し、前記環状の空所及び前記容器に
オイルを入れ、かつ、前記容器の上部をエジェクタに導
き、エジェクタ出口側の流体濃度を測定することによっ
て、熱交換流体の洩れを検出するようにした。The fluid leak detection device for a plate heat exchanger of this invention includes:
It consists of a group of stratified plates that alternately form passages that are closed and open to the inner space of the shell, and a shell that accommodates the stratified plates. a second heat exchange fluid is supplied into the closed passages, which are in communication with each other by closing the through holes M through the plates, and the second heat exchange fluid flows into each open passage. In a plate heat exchanger in which heat exchange is performed indirectly via plates between first and second heat exchange fluids flowing in matching passages, the heat exchange fluid is introduced into the closed passage, or A pair of large and small annular gaskets is installed around the through hole for leading out the heat exchange fluid from this passage, and the annular spaces formed between these gaskets are communicated with each other through a small hole bored in the plate. At the same time, the annular cavity is connected to a container provided outside, oil is poured into the annular cavity and the container, and the upper part of the container is guided to an ejector, and the fluid concentration on the ejector outlet side is measured. This allows leakage of the heat exchange fluid to be detected.
ガスケットの劣化などにより熱交換流体の漏れが発生す
ると、漏れた流体は、他方の流体と混ざることなく、環
状の空所に侵入し、そこから外部の容器内に貯まる。し
たがって、エジェクタでこの容器の上部空間を引いてお
くことにより、エジェクタの出口側の流体中に占める熱
交換流体の濃度に基づいて、その漏れの有無ないし漏れ
の量を定量的に検出するとともに、検出結果に基づいて
適切な措置を講することができる。When a leak of the heat exchange fluid occurs due to gasket deterioration or the like, the leaked fluid enters the annular cavity without mixing with the other fluid, and is stored in the external container from there. Therefore, by drawing the upper space of this container with the ejector, the presence or absence of leakage or the amount of leakage can be quantitatively detected based on the concentration of the heat exchange fluid in the fluid on the outlet side of the ejector, and Appropriate measures can be taken based on the detection results.
図面に示す実施例について説明すると、第2図は隣り合
った2枚の伝熱エレメント(4)を示しており、伝熱エ
レメント相互間には開放した通路(B)が形成されてい
る。各伝熱エレメント(4)は、一対のプレート(10
)(10°)を周縁に沿って溶接その他の適当な手段に
よって気密に接合して内部に、外部に対して閉じた通路
(A)を形成している。しかして、−多数のプレートか
らなる成層プレート群により閉じた通路(A)と開放し
た通路(B)が交互に形成される。To explain the embodiment shown in the drawings, FIG. 2 shows two adjacent heat transfer elements (4), and an open passage (B) is formed between the heat transfer elements. Each heat transfer element (4) consists of a pair of plates (10
) (10°) are hermetically joined along the periphery by welding or other suitable means to form a passage (A) inside that is closed to the outside. Thus, closed passages (A) and open passages (B) are formed alternately by the layered plate group consisting of a large number of plates.
閉じた通路(A)はプレートに穿った通孔(6)を通じ
て互いに連通している。成層プレート群において総ての
通孔(6)は−直線に整列し、一端にてシェル(2)に
設けた供給口と連絡する(第1図参照)0通路(6)の
周囲には同心円状(第3図)の二つのガスケット溝(1
2) (14)が存在し、それぞれに環状のガスケッ
ト(16) (18)を装着しである。これらのガス
ケント(16) (18)により、通路(A)と外部
、したがってまた、通路(B)との間は、二重にシール
される。The closed channels (A) communicate with each other through holes (6) cut in the plate. In the stratified plate group, all the through holes (6) are aligned in a straight line and communicate with the supply opening provided in the shell (2) at one end (see Figure 1).A concentric circle is formed around the zero passage (6). There are two gasket grooves (1
2) There are (14), each of which is fitted with annular gaskets (16) and (18). These gaskets (16) (18) provide a double seal between the passage (A) and the outside and thus also the passage (B).
ガスケラ) (16) (18)の間には環状の空所
(20)が形成され、この空所はプレー1− (16)
に穿った小孔(22)を通じて総て連通している、空所
(20)は、ガスケット(16) (18)から漏れ
出た流体を捕捉して器外に排出するために利用すること
ができる。A ring-shaped void (20) is formed between (16) and (18), and this void is connected to play 1- (16).
The cavities (20), which are all in communication through the small holes (22) drilled in the gaskets (16) and (18), can be used to capture fluid leaking from the gaskets (16) and (18) and discharge it to the outside of the vessel. can.
海水とアンモニアとの熱交換を扱う熱交換器を例にとっ
て説明すると次のとおりである。The following is an explanation using an example of a heat exchanger that exchanges heat between seawater and ammonia.
第1図において、海水は開放した通路(B)内を流れ、
アンモニアは閉じた通路(A)内を流れる。透明容器と
してオイルポット(24)を設けてあり、このオイルポ
ット(24)および二重シール部の環状の空所(20)
にはオイルを入れである。オイルポットの上部空間はエ
ジェクタ(26)に接続しである。エジェクタ(26)
に係合する駆動流体としては、この実施例の場合、ポン
プ(28)から熱交換器に供給される海水が利用される
。勿論、別の流体を利用してもよい、これに関し、例え
ばフロンを扱う熱交換器におけるフロンの漏れを検出す
る場合、エジェクタに供給する駆動流体として空気を使
用することができる。In Figure 1, seawater flows in an open passageway (B),
Ammonia flows in a closed channel (A). An oil pot (24) is provided as a transparent container, and this oil pot (24) and an annular cavity (20) in the double seal part
Put oil in it. The upper space of the oil pot is connected to an ejector (26). Ejector (26)
In this embodiment, seawater supplied to the heat exchanger from the pump (28) is used as the driving fluid that engages the heat exchanger. Of course, other fluids may also be used; in this regard, for example, when detecting a fluorocarbon leak in a heat exchanger that handles fluorocarbons, air can be used as the driving fluid to supply the ejector.
そして、エジェクタ(26)を出た海水は海水出口ピン
トから海へ排出される。エジェクタ(26)の出口α1
)にはサンプラー(30)及びアンモニア濃度測定装置
(32)を接続してあり、アンモニア濃度測定装置(3
2)で得られた情報は制御装置(34)のCPUに入力
される。The seawater that has exited the ejector (26) is discharged into the sea from the seawater outlet pinto. Exit α1 of ejector (26)
) is connected to a sampler (30) and an ammonia concentration measuring device (32), and ammonia concentration measuring device (32) is connected to the ammonia concentration measuring device (32).
The information obtained in step 2) is input to the CPU of the control device (34).
ガスケット(16) (1B)から漏れたアンモニア
はオイルに対して不溶であるため、環状の空所(20)
からプレートの小孔(22)を通じてオイルポット(2
4)内に流入し、オイルポット(24)の上部に貯まる
。オイルポット(24)内のアンモニアはエジェクタ(
26)で吸引され、海水と混じり、アンモニア水となっ
てエジェクタ(26)から排出される。このアンモニア
水からサンプラー(30)で試料採取して、アンモニア
濃度をアンモニア濃度測定装置(32)で測定すること
によりアンモニアの漏洩監視を行う。Ammonia leaking from the gasket (16) (1B) is insoluble in oil, so the annular cavity (20)
from the oil pot (2) through the small hole (22) in the plate.
4) and accumulates in the upper part of the oil pot (24). The ammonia in the oil pot (24) is removed by the ejector (
26), mixes with seawater, becomes ammonia water, and is discharged from the ejector (26). Ammonia leakage is monitored by collecting a sample from this ammonia water with a sampler (30) and measuring the ammonia concentration with an ammonia concentration measuring device (32).
例えば、1組の二重シール群から漏れるアンモニアの許
容量を10mg/winとすれば、エジェクタ(26)
で漏れたアンモニアを吸引させる駆動水量を10+sl
/sinとすれば、海水出口ビットから海へ排出される
アンモニア水中のアンモニア量を、水産庁基準の許容量
である1 ppmとすることができる。そして、試料ア
ンモニア水の濃度を監視し、濃度が1 ppm以下で平
衡状態または減少状態であれば正常と判断し、増加傾向
であれば、シールガスケットの交換などメンテナンスが
必要として、表示装置(36)により一次警報を出し、
1 ppmに達したら運転を停止させると同時に二次警
報を発するようにする。なお、海水が漏れた場合、水の
方が油より比重が大きいため、オイルポット(24)の
下部に海水が貯まる。したがって、海水の洩れは、オイ
ルポットの目視によっても簡単に検知できる。For example, if the allowable amount of ammonia leaking from one set of double seals is 10 mg/win, the ejector (26)
The amount of driving water to suck up the leaked ammonia is 10 + sl.
/sin, the amount of ammonia in the ammonia water discharged from the seawater outlet bit into the sea can be set to 1 ppm, which is the allowable amount according to the Fisheries Agency standard. Then, the concentration of the sample ammonia water is monitored, and if the concentration is 1 ppm or less, in an equilibrium state or in a decreasing state, it is determined to be normal.If it is increasing, maintenance such as replacing the seal gasket is required, and the display device (36 ) to issue a primary warning,
When it reaches 1 ppm, operation will be stopped and a secondary alarm will be issued at the same time. Note that if seawater leaks, water will accumulate in the lower part of the oil pot (24) because water has a higher specific gravity than oil. Therefore, seawater leakage can be easily detected by visually inspecting the oil pot.
この発明によれば、二重シールと封入オイルの作用が相
まって確実なシール作用が得られるばかりでなく、流体
の漏れ量を定量的に検出して監視することによってシー
ルガスケットの寿命ないし異常を発見して点検、取替な
どの適切な措置を適時に講するようにして漏洩管理を容
易に行うことができるから、特に、外部環境に悪影響を
及ぼすおそれのある熱交換流体の漏れを防止し、万−漏
れても早期に適切な措置を講することができ、プレート
式熱交換器の安全性を確保することができる。According to this invention, the combination of the double seal and the sealed oil not only provides a reliable sealing effect, but also detects the lifespan or abnormality of the seal gasket by quantitatively detecting and monitoring the amount of fluid leakage. In particular, leakage can be easily managed by taking appropriate measures such as inspection and replacement in a timely manner. Even in the event of a leak, appropriate measures can be taken at an early stage, and the safety of the plate heat exchanger can be ensured.
第1図はこの発明の漏れ検出装置を模式的に示したブロ
ック線図、
第2図は伝熱エレメントの断面図、
第3図は伝熱エレメントの正面図である。
24:透明容器
26:エジェクタ
28:ポンプ
30:サンプラ
32 濃度測定装置
34・制御装置
36、表示装置FIG. 1 is a block diagram schematically showing the leak detection device of the present invention, FIG. 2 is a sectional view of a heat transfer element, and FIG. 3 is a front view of the heat transfer element. 24: Transparent container 26: Ejector 28: Pump 30: Sampler 32 Concentration measurement device 34, control device 36, display device
Claims (1)
放した通路とを交互に形成した成層プレート群と、これ
を収容するシェルとからなり、第一の熱交換流体は一旦
シェルの内部空間に供給されそこから各開放した通路に
流入し、第二の熱交換流体は閉じた通路に供給され、こ
の閉じた通路はプレートを貫通する通孔を通じて互いに
連通しており、しかして隣り合う通路内を流れる第一及
び第二の熱交換流体間でプレートを介して間接的に熱交
換が行われるようにしたプレート式熱交換器において、 閉じた通路に熱交換流体を導入し、もしくはこの通路か
ら熱交換流体を導出するための前記通孔の周囲に大小一
対の環状のガスケットを装着し、これらのガスケット間
に形成される環状の空所をプレートに穿った小孔を通じ
て互いに連通せしめるとともに、前記環状の空所を外部
に設けた容器に接続し、前記環状の空所及び前記容器に
オイルを入れ、かつ、前記容器の上部をエジェクタに導
き、エジェクタ出口側の流体濃度を測定することによっ
て熱交換流体の漏れを検出するようにしたことを特徴と
するプレート式熱交換器の流体漏れ検出装置。(1) Consisting of a group of stratified plates that alternately form closed passages and open passages with respect to the shell internal space, and a shell that accommodates the stratified plates, the first heat exchange fluid is once inside the shell. A second heat exchange fluid is supplied to the interior space and from there into each open passageway, and a second heat exchange fluid is supplied to closed passageways which communicate with each other through holes through the plates, thus allowing the adjacent In a plate heat exchanger in which heat exchange is performed indirectly through plates between first and second heat exchange fluids flowing in matching passages, the heat exchange fluid is introduced into the closed passage, or A pair of large and small annular gaskets is installed around the through hole for leading out the heat exchange fluid from this passage, and the annular spaces formed between these gaskets are communicated with each other through a small hole bored in the plate. At the same time, the annular cavity is connected to a container provided outside, oil is poured into the annular cavity and the container, and the upper part of the container is guided to an ejector, and the fluid concentration on the ejector outlet side is measured. 1. A fluid leakage detection device for a plate heat exchanger, characterized in that the leakage of a heat exchange fluid is detected by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1036989A JPH02192598A (en) | 1989-01-18 | 1989-01-18 | Fluid leakage detecting device for plate type heat exchanger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1036989A JPH02192598A (en) | 1989-01-18 | 1989-01-18 | Fluid leakage detecting device for plate type heat exchanger |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02192598A true JPH02192598A (en) | 1990-07-30 |
Family
ID=11748243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1036989A Pending JPH02192598A (en) | 1989-01-18 | 1989-01-18 | Fluid leakage detecting device for plate type heat exchanger |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02192598A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004502921A (en) * | 2000-07-07 | 2004-01-29 | アルファ ラヴァル コーポレイト アクチボラゲット | Plate heat converter |
WO2013039127A1 (en) * | 2011-09-14 | 2013-03-21 | 株式会社日阪製作所 | Plate heat exchanger |
WO2013061966A1 (en) * | 2011-10-24 | 2013-05-02 | 株式会社日阪製作所 | Plate heat exchanger |
WO2013069706A1 (en) * | 2011-11-11 | 2013-05-16 | 株式会社日阪製作所 | Plate type heat exchanger |
WO2020054222A1 (en) * | 2018-09-14 | 2020-03-19 | 三菱重工サーマルシステムズ株式会社 | Heating-medium heating device and vehicle air conditioner |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63180084A (en) * | 1987-01-20 | 1988-07-25 | Hisaka Works Ltd | Shell and plate type heat exchanger |
-
1989
- 1989-01-18 JP JP1036989A patent/JPH02192598A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63180084A (en) * | 1987-01-20 | 1988-07-25 | Hisaka Works Ltd | Shell and plate type heat exchanger |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004502921A (en) * | 2000-07-07 | 2004-01-29 | アルファ ラヴァル コーポレイト アクチボラゲット | Plate heat converter |
EP2757339A4 (en) * | 2011-09-14 | 2015-08-26 | Hisaka Works Ltd | Plate heat exchanger |
CN103842761A (en) * | 2011-09-14 | 2014-06-04 | 株式会社日阪制作所 | Plate heat exchanger |
JPWO2013039127A1 (en) * | 2011-09-14 | 2015-03-26 | 株式会社日阪製作所 | Plate heat exchanger |
WO2013039127A1 (en) * | 2011-09-14 | 2013-03-21 | 株式会社日阪製作所 | Plate heat exchanger |
US9927186B2 (en) | 2011-09-14 | 2018-03-27 | Hisaka Works, Ltd. | Plate heat exchanger |
WO2013061966A1 (en) * | 2011-10-24 | 2013-05-02 | 株式会社日阪製作所 | Plate heat exchanger |
JPWO2013061966A1 (en) * | 2011-10-24 | 2015-04-02 | 株式会社日阪製作所 | Plate heat exchanger |
WO2013069706A1 (en) * | 2011-11-11 | 2013-05-16 | 株式会社日阪製作所 | Plate type heat exchanger |
CN103917843A (en) * | 2011-11-11 | 2014-07-09 | 株式会社日阪制作所 | Plate type heat exchanger |
JPWO2013069706A1 (en) * | 2011-11-11 | 2015-04-02 | 株式会社日阪製作所 | Plate heat exchanger |
US9772146B2 (en) | 2011-11-11 | 2017-09-26 | Hisaka Works, Ltd. | Plate heat exchanger |
WO2020054222A1 (en) * | 2018-09-14 | 2020-03-19 | 三菱重工サーマルシステムズ株式会社 | Heating-medium heating device and vehicle air conditioner |
JP2020044865A (en) * | 2018-09-14 | 2020-03-26 | 三菱重工サーマルシステムズ株式会社 | Heating medium heater and vehicle air conditioner |
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