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EP0071659B1 - Wärmetauscher - Google Patents

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Publication number
EP0071659B1
EP0071659B1 EP19810106146 EP81106146A EP0071659B1 EP 0071659 B1 EP0071659 B1 EP 0071659B1 EP 19810106146 EP19810106146 EP 19810106146 EP 81106146 A EP81106146 A EP 81106146A EP 0071659 B1 EP0071659 B1 EP 0071659B1
Authority
EP
European Patent Office
Prior art keywords
circulating fluid
tubes
chambers
chamber
fluid inlet
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.)
Expired
Application number
EP19810106146
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English (en)
French (fr)
Other versions
EP0071659A1 (de
Inventor
John Ronald Pain
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE8181106146T priority Critical patent/DE3171696D1/de
Priority to EP19810106146 priority patent/EP0071659B1/de
Publication of EP0071659A1 publication Critical patent/EP0071659A1/de
Application granted granted Critical
Publication of EP0071659B1 publication Critical patent/EP0071659B1/de
Priority to MY8800116A priority patent/MY8800116A/xx
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/103—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of more than two coaxial conduits or modules of more than two coaxial conduits

Definitions

  • the invention refers to a heat exchanger for primary and secondary fluids between which heat exchanger occurs, said exchanger comprising at least first, second and third tubes of successively larger diameters and coaxially disposed, the tubes being spaced apart by a pair of end manifolds to form annular fluid flow passages for said primary and secondary fluids between adjacent tubes, at least one of said manifolds having a generally conical portion and having first, second and third pairs of sealing elements which sealingly engage the inner surfaces of the first, second and third tubes respectively, circumferential flow passages located between the sealing elements of at least said second pair, said conical portion including first and second chambers formed therein for the primary and secondary fluids and wherein, in transverse section of said conical portion, the first and second chambers lie on opposite sides of a diametrical line, there being a third chamber located between the first and second chambers and said conical portion further including generally radial ducts extending to said circumferential flow passages on generally opposite sides thereof.
  • Such a heat exchanger is known from US-A-4 146 088.
  • This heat exchanger is improved by the invention in that said third chamber has a member extending therethrough so as to divide the third chamber into three chambers: one central chamber within said member and circulating fluid inlet and outlet chambers on opposite sides of the central chamber and wherein said line passes through said circulating fluid inlet and outlet chambers and said central chamber, said radial ducts extending from respective circulating fluid inlet and outlet chambers, said manifold further including circulating fluid inlet and outlet ducts for fluid communication to the circulating fluid inlet and outlet chambers respectively whereby in use circulating fluid can pass through the circulating fluid inlet duct, to the circulating fluid inlet chamber, through one of the radial ducts to the circumferential passage and can flow through the passage and enter the other radial duct then flow through the circulating fluid outlet chamber and thence out of the circulating fluid outlet duct.
  • This heat exchanger proposed by the invention provides means for establishing flow of a purging fluid in the region between the 0-ring or rings and the ends of the tubes.
  • a purging fluid can firstly function as a coolant for cooling the 0-rings and thereby making the exchanger more suitable for treatment of fluids at higher temperatures.
  • the purging fluid can be maintained at relatively higher pressure than the fluids flowing in the annular flow paths between adjacent fluids whereby if there is a leak between the 0-rings and the ends of the tubes, the purging fluid will flow into such annular spaces and intermixing of the fluids being treated in the heat exchanger will not occur.
  • the purging fluid could be kept at relatively low pressure and a monitoring system provided to detect the presence of either or both of the heat exchanger fluids in the purging fluid.
  • a monitoring system provided to detect the presence of either or both of the heat exchanger fluids in the purging fluid.
  • the purging fluid could sterilize the passage between the O-rings thus eliminating biological contamination in the event of a damaged seal.
  • the heat exchanger of the invention comprises a pair of end manifolds 2 between which concentric heat conducting tubes 4 are disposed.
  • the manifolds have a central bore 6 through which a long tension bolt 7 can pass therethrough and be used to clamp the tubes between the end manifolds.
  • a long tension bolt 7 can pass therethrough and be used to clamp the tubes between the end manifolds.
  • the spaces between adjacent tubes form annular fluid flow passages for the heat exchanger.
  • each manifold comprises a generally conical body portion 8 integrally cast with tubular inlet/outlet spigots 10 and 12.
  • the spigots 10 and 12 permit connection of fluid conduits to the end manifold by conventional means.
  • the spigots 10 and 12 can be used interchangeably as inlet or outlet but in the description which follows it will be assumed that the spigot 10 is used as an inlet for a first heat transfer fluid and the spigot 12 is used as an outlet for the second heat transfer fluid.
  • the body portion 8 includes inlet chamber 14 and an outlet chamber 16 in communication respectively with the spigots 10 and 12.
  • the conical portion 8 further includes a central opening which is divided into separate chambers 18 and 19 by a tube 21, the ends of the tube 21 passing through the bore 6 and being welded thereto.
  • the outer surface of the body portion 8 of the manifold includes a series of generally cylindrical portions 20 which are spaced axially along the body portion and are adapted to be inserted within respective ends of the tubes 4, the cylindrical portions 20 being interconnected by tapering transition portions. Each cylindrical portion has formed therein two spaced grooves for receipt of O-rings 25 for forming positive seals with the inner surfaces of the tubes 4. A shoulder is formed at the end of each of the cylindrical portions 20 so as to form a seat against which the ends of the tubes 4 bear.
  • Fluid chambers 14 and 16 are connected to the annular fluid passages defined between adjacent tubes 4 by way of radial recesses 28 and 29 formed into the transition portions as best seen in Figure 1.
  • the manifold includes a purging fluid inlet duct 32 opens into the chamber 18 which has a number of generally radial inlet ducts 34 which communicate with respective grooves 30.
  • a purging fluid outlet duct 36 which opens into the chamber 19 which has a number of generally radial return passages 38 from the grooves 30.
  • the purging fluid will then flow from the chamber 18 through the passages 34 then follow generally semi-circular paths along the grooves 30 and between the pairs of O-rings 25. The fluid will then flow into the return passages 38 to the return chamber 19.
  • the purging fluid can be used as a coolant to cool the O-rings 25 to thereby enable the heat exchanger to be used with heat transfer fluids at relatively high temperatures.
  • the purging fluids may be circulated at a pressure which is higher than one or other of the pressures of the first and second heat transfer fluids so that should there be any leakage at the O-rings 25 the purging fluid will flow into the heat transfer passages between the tubes rather than intermixing of the heat transfer fluids.
  • the purging fluid may be circulated at relatively low pressure compared to the heat transfer fluids and monitoring apparatus provided to monitor the presence of one or other of the heat transfer fluids in the purging fluid so as to provide an effective means of detecting a broken or damaged O-ring.
  • This arrangement is schematically illustrated in Figure 2 which shows a purging fluid supply 50 connected by a conduit 52 to the inlet duct 32 and a purging fluid analyser 54 connected by a conduit 56 to the outlet duct 36.
  • the analyser monitors the presence of traces of one or both of the fluids flowing through the inlet 10 and outlet 12 of the exchanger.
  • the supply and analyser could be operated continuously or periodically. There may be a return path for purging fluid from the analyser 54 to the supply 50.

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  • 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)

Claims (4)

1. Wärmetauscher für erste und zweite Fluide, zwischen denen ein Wärmeaustausch erfolgt, mit mindestens ersten, zweiten und dritten koaxial angeordneten Rohren (4) mit zunehmend größeren Durchmessern, die mit Hilfe eines Paares von Endverteilern (2) zur Bildung ringförmiger Fluid-Strömungsdurchgänge für die ersten und zweiten Fluide zwischen benachbarten Rohren (4) beabstandet sind, wobei mindestens einer der Endverteiler (2) einen im allgemeinen konischen Abschnitt und erste, zweite und dritte Paare von Abdichtelementen (25) aufweist, die abdichtend an den inneren Oberflächen des ersten bzw. zweiten bzw. dritten Rohres (4) angreifen, wobei umlaufende Strömungsdurchgänge (30) zwischen den Abdichtelementen (25) mindestens des zweiten Paares angeordnet sind, der konische Abschnitt darin eingeformte erste und zweite Kammern (14) und (16) für die ersten und zweiten Fluide aufweist und in einem Querschnitt des konischen Abschnittes die ersten und zweiten Kammern (14) und (16) auf gegenüberliegenden Seiten einer Durchmesserlinie liegen, eine dritte Kammer (18) zwischen der ersten und zweiten Kammer angeordnet ist und der konische Abschnitt weiterhin etwa radiale Leitungen (34, 38) aufweist, die sich zu den umlaufenden Flüssigkeitsdurchgängen (20) auf dessen im allgemeinen gegenüberliegenden Seiten erstrecken, dadurch gekennzeichnet, daß die dritte Kammer ein sich hierdurch zur Teilung der dritten Kammer in drei Kammern erstreckendes Rohr (21) aufweist, nämlich eine zentrale Kammer innerhalb des Rohres (21) sowie eine Einlaß- und eine Auslaßkammer (18, 19) für das zirkulierende Fluid auf gegenüberliegenden Seiten der zentralen Kammer, wobei die Linie durch die Einlaßkammer (18) und die Auslaßkammer (19) für zirkulierendes Fluid und die zentrale Kammer hindurchgeht, daß sich die radialen Leitungen (34, 38) von der Einlaß- bzw. Auslaßkammer (18,19) für zirkulierendes Fluid erstrecken, der Verteiler (2) weiterhin Einlaß- und Auslaßleitungen (32, 36) für zirkulierendes Fluid zur Fluidverbindung mit der Einlaß- bzw. Auslaßkammer (18, 19) für zirkulierendes Fluid aufweist, wodurch im Gebrauch zirkulierendes Fluid durch die Zirkulationsfluid-Einlaßleitung (32) in die Fluid-Einlaßkammer (18), durch eine der radialen Leitungen (34, 38) in den umlaufenden Durchgang (30) gelangen und durch den Durchgang (30) fließen kann, in die andere radiale Leitung (38, 34) gelangen und dann durch die Zirkulationsfluid-Auslaßkammer (19) und von dort aus der Zirkulationsfluid-Auslaßleitung (36) fließen kann.
2. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, daß die Rohre (4) Paare von abdichtenden Elementen (25) aufweisen, die abdichtend an den inneren Oberflächen der Rohre (4) angreifen, und wobei zwischen jedem Paar von abdichtenden Elementen (25) umlaufende Strömungsdurchgänge (30) vorhanden sind.
3. Wärmetauscher nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß beide der Endverteiler (2) gleich sind und sich ein langegestreckter Zugbolzen (7) innerhalb des ersten Rohres und durch das Element (21) erstreckt und die Enden der Rohre (4) gegen in den konischen Abschnitten der Verteiler (2) gebildete Schultern gesetzt hält.
4. Wärmetauscher nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Abdichtelemente (25) O-Ringe enthalten und eine Zirkulationsfluid-Versorgungseinrichtung (50) über eine Leitung (52) mit der Zirkulationsfluid-Einlaßleitung (32) verbunden ist, wobei die Versorgungseinrichtung (50) derart ausgebildet und angeordnet ist, daß sie im Gebrauch Zirkulationsfluid bei einer relativ niedrigen Temperatur zur Külung der O-Ringe liefert.
EP19810106146 1981-08-05 1981-08-05 Wärmetauscher Expired EP0071659B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8181106146T DE3171696D1 (en) 1981-08-05 1981-08-05 Improved heat exchanger
EP19810106146 EP0071659B1 (de) 1981-08-05 1981-08-05 Wärmetauscher
MY8800116A MY8800116A (en) 1981-08-05 1988-12-30 Improved heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19810106146 EP0071659B1 (de) 1981-08-05 1981-08-05 Wärmetauscher

Publications (2)

Publication Number Publication Date
EP0071659A1 EP0071659A1 (de) 1983-02-16
EP0071659B1 true EP0071659B1 (de) 1985-08-07

Family

ID=8187845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810106146 Expired EP0071659B1 (de) 1981-08-05 1981-08-05 Wärmetauscher

Country Status (3)

Country Link
EP (1) EP0071659B1 (de)
DE (1) DE3171696D1 (de)
MY (1) MY8800116A (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1420881A4 (de) * 2001-06-27 2006-03-08 Nu Element Inc Modulare mikroreaktorarchitektur und verfahren für fluidbehandlungsvorrichtungen
FR2883367B1 (fr) * 2005-03-15 2011-01-21 Pierre Bignon Echangeur thermique
DE602006012560D1 (de) * 2006-08-02 2010-04-08 Pierre Bignon Wärmetauscher
CN111521043B (zh) * 2020-04-24 2021-03-16 西安交通大学 一种用于超临界水热合成纳米粉体的微通道回热器
CN112902220A (zh) * 2020-12-22 2021-06-04 中国天辰工程有限公司 一种叉形管和水冷壁

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2658728A (en) * 1948-06-25 1953-11-10 Lummus Co Method of detecting leakage between heat transfer fluids
US2951165A (en) * 1957-08-08 1960-08-30 Reda Pump Company Heat exchanger for submergible pumping assembly
FR83366E (fr) * 1963-02-25 1964-07-31 échangeur de chaleur
AU510518B2 (en) * 1976-04-08 1980-07-03 Heat Transfer Pty. Ltd. Seals for concentrically arranged tubes of heat exchangers
US4228848A (en) * 1979-01-23 1980-10-21 Grumman Energy Systems, Inc. Leak detection for coaxial heat exchange system

Also Published As

Publication number Publication date
MY8800116A (en) 1988-12-31
EP0071659A1 (de) 1983-02-16
DE3171696D1 (en) 1985-09-12

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