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EP0071659A1 - Echangeur de chaleur - Google Patents

Echangeur de chaleur Download PDF

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Publication number
EP0071659A1
EP0071659A1 EP19810106146 EP81106146A EP0071659A1 EP 0071659 A1 EP0071659 A1 EP 0071659A1 EP 19810106146 EP19810106146 EP 19810106146 EP 81106146 A EP81106146 A EP 81106146A EP 0071659 A1 EP0071659 A1 EP 0071659A1
Authority
EP
European Patent Office
Prior art keywords
fluid
passages
circulating fluid
heat exchanger
locations
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
Application number
EP19810106146
Other languages
German (de)
English (en)
Other versions
EP0071659B1 (fr
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP19810106146 priority Critical patent/EP0071659B1/fr
Priority to DE8181106146T priority patent/DE3171696D1/de
Publication of EP0071659A1 publication Critical patent/EP0071659A1/fr
Application granted granted Critical
Publication of EP0071659B1 publication Critical patent/EP0071659B1/fr
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

  • This invention relates to heat exchangers, particularly but not exclusively of the type shown in U. S. Patent No. 4,146,088.
  • the aforementioned United States Patent discloses a heat exchanger comprising a plurality of concentric tubes clamped between end manifolds.
  • the fluid flow passages for the heat exchanger are formed in the annular regions between adjacent tubes.
  • the end manifolds include O-rings which sealingly engage the inner surfaces of the ends of the cubes.
  • the present invention concerns a modification to such exchangers which can advantageously be employed in several ways.
  • the invention provides means for establishing flow of a purging fluid in the region between the O-ring or rings and the ends of the tubes.
  • a purging fluid can firstly function as a coolant for cooling the O-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 O-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.
  • a heat exchanger for fluids comprising a plurality of coaxially arranged tubes of thermally conductive material, the tubes being spaced apart radially by a pair of end manifolds to form annular fluid flow passages at least one of said manifolds having first and second sealing elements for forming seals between the manifold and the ends of the tubes, circumferential fluid passages being defined between said first and second sealing elements, circulating fluid inlet means for admitting a circulating fluid at first locations in said passages, and circulating fluid outlet means for discharge of said circulating fluid at second locations in said passages, the first and second locations being circumferentially spaced for each passage.
  • the invention also provides a method of exchanging heat between a first fluid and a second fluid which is at a different temperature to the first fluid, said method including the steps of passing the first and second fluids through first and second fluid flow paths in a heat exchanger, said flow paths being isolated from one another by first and second sealing elements, there being a third fluid flow path defined between said first and second sealing elements, passing a circulating fluid through said third fluid flow path, and analysing the circulating fluid discharged from the third flow path to detect traces of the first or second fluid therein.
  • 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 interchangably 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.
  • FIG 2 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.

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)
EP19810106146 1981-08-05 1981-08-05 Echangeur de chaleur Expired EP0071659B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19810106146 EP0071659B1 (fr) 1981-08-05 1981-08-05 Echangeur de chaleur
DE8181106146T DE3171696D1 (en) 1981-08-05 1981-08-05 Improved heat exchanger
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 (fr) 1981-08-05 1981-08-05 Echangeur de chaleur

Publications (2)

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

Family

ID=8187845

Family Applications (1)

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

Country Status (3)

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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1420881A2 (fr) * 2001-06-27 2004-05-26 Nu Element, Inc. Architecture de microreacteur modulaire et procede destine a des dispositifs de traitement de fluide
FR2883367A1 (fr) * 2005-03-15 2006-09-22 Pierre Bignon Echangeur thermique
WO2008015314A1 (fr) * 2006-08-02 2008-02-07 Pierre Bignon Echangeur thermique
CN111521043A (zh) * 2020-04-24 2020-08-11 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

Citations (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
US4146088A (en) * 1976-04-08 1979-03-27 Pain Ronald A Heat exchanger
US4228848A (en) * 1979-01-23 1980-10-21 Grumman Energy Systems, Inc. Leak detection for coaxial heat exchange system

Patent Citations (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
US4146088A (en) * 1976-04-08 1979-03-27 Pain Ronald A Heat exchanger
US4228848A (en) * 1979-01-23 1980-10-21 Grumman Energy Systems, Inc. Leak detection for coaxial heat exchange system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1420881A2 (fr) * 2001-06-27 2004-05-26 Nu Element, Inc. Architecture de microreacteur modulaire et procede destine a des dispositifs de traitement de fluide
EP1420881A4 (fr) * 2001-06-27 2006-03-08 Nu Element Inc Architecture de microreacteur modulaire et procede destine a des dispositifs de traitement de fluide
FR2883367A1 (fr) * 2005-03-15 2006-09-22 Pierre Bignon Echangeur thermique
WO2008015314A1 (fr) * 2006-08-02 2008-02-07 Pierre Bignon Echangeur thermique
CN101568789B (zh) * 2006-08-02 2011-07-27 皮埃尔·比尼翁 热交换器
CN111521043A (zh) * 2020-04-24 2020-08-11 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
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

Also Published As

Publication number Publication date
EP0071659B1 (fr) 1985-08-07
MY8800116A (en) 1988-12-31
DE3171696D1 (en) 1985-09-12

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