WO2002027256A2 - Échangeur thermique pourvu d'un appareil de scellement - Google Patents

Échangeur thermique pourvu d'un appareil de scellement Download PDF

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Publication number
WO2002027256A2
WO2002027256A2 PCT/US2001/031049 US0131049W WO0227256A2 WO 2002027256 A2 WO2002027256 A2 WO 2002027256A2 US 0131049 W US0131049 W US 0131049W WO 0227256 A2 WO0227256 A2 WO 0227256A2
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
seals
aperture
header
plate
Prior art date
Application number
PCT/US2001/031049
Other languages
English (en)
Other versions
WO2002027256A9 (fr
WO2002027256A3 (fr
Inventor
Robert J. Janezich
James M. Comstock
Original Assignee
L & M Radiator, Inc.
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 L & M Radiator, Inc. filed Critical L & M Radiator, Inc.
Priority to AU2001296575A priority Critical patent/AU2001296575A1/en
Publication of WO2002027256A2 publication Critical patent/WO2002027256A2/fr
Publication of WO2002027256A3 publication Critical patent/WO2002027256A3/fr
Publication of WO2002027256A9 publication Critical patent/WO2002027256A9/fr

Links

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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0229—Double end plates; Single end plates with hollow spaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
    • F28F9/14—Arrangements for sealing elements into header boxes or end plates by dismountable joints by force-joining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/16—Safety or protection arrangements; Arrangements for preventing malfunction for preventing leakage

Definitions

  • the invention relates to heat exchangers, and more particularly, to a heat exchanger with an improved seal apparatus.
  • Heat exchangers transfer heat from one fluid to another fluid.
  • heat is transferred via a first liquid, such as oil, on the outside of the tubes of a tube bundle to a second cooling liquid, such as water, on the inside of the tubes of the tube bundle.
  • a first liquid such as oil
  • a second cooling liquid such as water
  • present designs of heat exchangers typically used on mobile equipment, have a single tube-to-header plate joint, or seal, on each end of each tube in the tube bundle.
  • the header plate is often referred to as a tube sheet.
  • the joints are designed to prevent leakage or cross- contamination of the fluid on the outside of the tubes to the fluid on the inside of the tubes.
  • the joints may be mechanical, soldered, or welded to provide the tube-to- header plate seal.
  • the joints may alternatively utilize elastomeric seals to provide the tube-to-header plate seal.
  • a single tube-to-header plate joint design does not prevent cross contamination of the two heat exchanger fluids if any of the joints fail, and also does not allow for leak detection.
  • One or both working fluids can be routinely examined for evidence that leakage or cross-contamination has occurred, but often the failure of the equipment cooled by the heat exchanger is the first sign that a leak and/or cross-contamination of fluids has occurred. Such a failure is usually very costly.
  • a repair method often used is to block off the tubes at which a failure has occurred. This leads to a heat exchanger with less cooling than is required.
  • the principles of the present invention may be used advantageously to provide heat exchangers with improved sealing capabilities, the capability to detect leaks before cross-contamination of heat exchange fluids occurs, and improved cleaning and repair capabilities.
  • a heat exchanger includes a heat exchanger shell having an inlet and an outlet, and a pair of header plates.
  • Each header plate is positioned at an end of the heat exchanger shell and includes an outer member and an inner member spaced apart to define a leak detection chamber.
  • a plurality of apertures is provided in each inner member and each outer member, with each aperture having a channel formed therein.
  • Each heat exchanger tube of a plurality of heat exchanger tubes is received by an aperture in the inner member and a corresponding aperture in the outer member of each header plate.
  • Also provided are a plurality of seals, with each seal received in a channel and sealingly engaging a corresponding heat exchanger tube.
  • a passage is provided in each header plate leading from the leak detection chamber to an exterior of the header plate.
  • a heat exchanger in accordance with a second aspect, includes a heat exchanger shell having an inlet and an outlet and a pair of header plates.
  • Each header plate is positioned at an end of the heat exchanger shell and includes an inner plate and an outer plate spaced apart to define a leak detection chamber.
  • Each of the inner plates and outer plates has a plurality of apertures, with each aperture having a channel.
  • a passage in each header plate provides fluid communication between the leak detection chamber and an exterior of the heat exchanger.
  • Each heat exchanger tube of a plurality of heat exchanger tubes is received by an aperture in the inner member and a corresponding aperture in the outer member of the header plates at each end of the heat exchanger shell.
  • a seal is received in each channel and sealingly engages the respective channel and a corresponding heat exchanger tube.
  • a cover is secured to each header plate and defines a distribution chamber therebetween, with each end of the heat exchanger tubes extending into one of the distribution chambers.
  • a port in each cover provides fluid communication from the distribution chamber to an exterior of the heat exchanger.
  • a heat exchanger including a pair of header plates.
  • a leak detection chamber is formed in each header plate.
  • Each header plate has a plurality of pairs of apertures. One aperture of each pair of apertures is positioned on one side of the leak detection chamber, and the other aperture of each pair of apertures is positioned on an opposite side of the leak detection chamber.
  • the apertures of each pair of apertures are substantially coaxial, with each aperture having a channel formed therein.
  • Each end of each heat exchanger tube of a plurality of heat exchanger tubes is received by a pair of apertures.
  • Each seal of a plurality of seals is received in a channel and sealingly engages a corresponding heat exchanger tube.
  • a passage in each header plate leads from the leak detection chamber to an exterior of the header plate.
  • FIG. 1 shows a sectional view of a heat exchanger seal apparatus in accordance with a preferred embodiment of the present invention.
  • FIG. 2 shows an enlarged view, partially broken away, of a seal within a channel of the heat exchanger seal apparatus of FIG. 1.
  • FIG. 3 shows a sectional view of an alternative embodiment of the seal of FIG. 1.
  • FIG. 4 shows a sectional view of another alternative embodiment of the seal of FIG. 1.
  • FIG. 5 shows a sectional view of an alternative embodiment of the heat exchanger seal apparatus of FIG. 1.
  • FIG. 6 shows a sectional view, partially cut away, of an alternative embodiment of the heat exchanger seal apparatus of FIG. 1.
  • FIG. 7 shows a plan view of an alternative embodiment of the leak detection chamber of the heat exchanger seal apparatus of FIG. 1.
  • a heat exchanger 2 includes a heat exchanger shell 4 having a flange 3 at each end thereof. At each end of heat exchanger shell 4, a header plate 6 is secured to flange 3 by bolts (not shown) or other suitable means. A gasket (not shown) is preferably positioned between each flange 3 and header plate 6 to seal the gap therebetween.
  • Heat exchanger shell 4 has a pair of ports 5 to allow the passage of fluid therethrough. Consequently, one port 5 will form an inlet to allow a first fluid to flow into heat exchanger shell 4, while the other port 5 will form an outlet to allow the first fluid to exit heat exchanger shell 4.
  • Each header plate 6 is formed of an outer member, such as outer plate 8 and an inner member, such as inner plate 10.
  • Inner plate 8 and outer plate 10 are spaced apart to define a leak detection chamber 11.
  • a passage 13 extends from chamber 11 outwardly through header plate 16, providing a fluid communication path from chamber 11 to the exterior of heat exchanger 2. In certain preferred embodiments, more than one passage 13 may extend from chamber 11 to the exterior of heat exchanger 2.
  • a plurality of apertures 12 is formed in outer plate 8.
  • a plurality of apertures 15 are formed in inner plate 10, each of which is substantially coaxial with a corresponding aperture 12. [20]
  • a plurality of heat exchanger tubes 14 is positioned within heat exchanger shell 4.
  • Each heat exchanger tube 14 is received by and extends through an aperture 15 in the inner plate 10 and an aperture 12 in the outer plate 8 of both header plates 6.
  • a cover or end bonnet 16 having a flange 17 is secured to each header plate 6 by bolts (not shown) or other suitable means, defining a distribution chamber 18 between end bonnet 16 and header plate 6.
  • a gasket (not shown) is typically positioned between each flange 17 and header plate 6 to seal the gap therebetween.
  • a port 19 is provided on each end bonnet 16, providing fluid communication from distribution chamber 18 to the exterior of end bonnet 16.
  • one port 19 will form an inlet to allow a second fluid to flow in through an end bonnet 16 and through a corresponding distribution chamber 18 into heat exchanger tubes 14, while the other port 19 will form an outlet to allow the second fluid to exit heat exchanger tubes 14 and a corresponding distribution chamber 18 of the other end bonnet 16.
  • the first and second fluids may be any fluid suitable for use in heat exchangers such as, for example, water, oil, glycol solutions, steam, air, or seawater. Other suitable fluids will become readily apparent to those skilled in the art, given the benefit of this disclosure.
  • Each aperture 12 in outer plate 8, and each aperture 15 in inner plate 10 is provided with a seal 20 that resiliently engages the exterior surface of a respective heat exchanger tube 14 and the surface of the respective inner plate 10 or outer plate 8, as seen in FIG. 2 with respect to inner plate 10.
  • each end of each heat exchanger tube 14 has a pair of seals 20 that contact the heat exchanger tube and the heat exchanger 2.
  • Each seal 20 is preferably received in a groove or channel 22.
  • heat exchanger tubes 14 are cylindrical and channels 22 are annular channels.
  • channels 22 have a pair of side walls and a bottom to form a rectangular cross-section. It is to be appreciated that channels 22 may have other cross-sectional shapes.
  • Channels 22 may have any shape suitable for receiving a seal 20 such that the seal may provide sealing engagement between a heat exchanger tube and a respective inner plate 10 or outer plate 8, as well as allowing seal 20 to accommodate thermal expansion and contraction of heat exchanger tubes 14.
  • Channel 22 also advantageously serves to secure the seal 20 within the corresponding plate.
  • seals 20 are O-rings that seat within channels 22 and resiliently engage the exterior surface of a corresponding heat exchanger tube 14 and channel, providing a seal therebetween.
  • seals 20 have a circular cross-section as shown in Fig. 2.
  • seals 20' may have a lobed cross-section, as seen in FIG. 3, or, as seen in FIG. 4, seals 20" may have a rectangular cross-section.
  • Other suitable cross-sections for seals 20 will become readily apparent to those skilled in the art, given the benefit of this disclosure.
  • Seals 20 may be formed of an elastomeric material, such as a fluorocarbon-based rubber, ethylene-propylene terpolymer (EPDM), nitrile, or silicon. Seals 20 may be formed of any material suitable for the operating pressures and temperatures and heat exchange fluids found in such heat exchangers, and such suitable materials will become readily apparent to those skilled in the art, given the benefit of this disclosure. In certain preferred embodiments, the seals 20 in inner plate 10 may be formed of a different material than the seals 20 found in outer plate 8, dependent on the fluid to which the seals are exposed.
  • EPDM ethylene-propylene terpolymer
  • a conduit 24 connects passage 13 to a leak detector 26.
  • Conduit 24 may be a pipe, a tube, a hose, or any other suitable device for transferring fluid from passage 13 to leak detector 26.
  • a leak detector may be connected to either or both of the passages 13.
  • Leak detector 26 can also be connected to one or more passages of one or more other heat exchangers.
  • Leak detector 26 preferably provides an indicator via a signal to indicate to alert an individual that a leak has occurred.
  • the signal may be an audible signal, for example, that produced by a speaker 28.
  • Other devices producing audible signals are considered to be within the scope of the invention including, for example, buzzers, bells and sirens.
  • the signal could be a visual signal produced by a light 30.
  • Other devices producing visual signals are considered to be within the scope of the invention including, for example, a message displayed on a computer monitor.
  • leak detector 26 could send a signal by, for example, a cable or wire 32, to a valve 34 to shut off flow of the leaking fluid.
  • Suitable leak detectors include, for example, capacitance switches, inductance switches, float switches, pressure transducers, fluid level indicators, and fluid type indicators. Other suitable leak detectors are well known to those skilled in the art, and further description will not be provided here.
  • the use of a pair of replaceable seals at each end of the heat exchanger tubes, particularly elastomeric seals, provides numerous advantages.
  • the pair of seals and the corresponding leak detection chamber and passage provides the ability for early leak detection, before cross-contamination of the heat exchange fluids occurs.
  • elastomeric seals absorb thermal expansion and contraction stresses normally found in heat exchangers, reducing the stresses incurred by the heat exchanger itself.
  • the seals are removable, the heat exchanger can be completely disassembled and thoroughly cleaned. Further, any damaged seals can be easily replaced, resulting in a heat exchanger in like-new condition.
  • baffles may be disposed within heat exchanger shell 4, in order to redirect the flow of the second fluid over and around the heat exchanger tubes 14, thereby increasing the heat transfer within the heat exchanger.
  • FIG. 5 Another preferred embodiment is shown in FIG. 5, in which heat exchanger 2 has no shell enclosing heat exchanger tubes 14.
  • heat exchanger tubes 14 may be exposed to, for example, ambient air.
  • Support members 36 having flanges 38 may extend between and be secured to header plates 6, thereby providing structural support for heat exchanger 2 between the header plates 6.
  • FIG. 6 Another preferred embodiment is shown in FIG. 6, where outer plate 8' and inner plate 10' of header plate 6' are separated by a spacer 40. Gaskets (not shown) are preferably positioned between outer plate 8' and spacer 40, and between inner plate 10' and spacer 40.
  • Passage 13 extends through spacer 40, connecting leak detection chamber 11 with the exterior of the heat exchanger.
  • leak detection chamber 11 can be formed in many different ways.
  • leak detection chamber 11 could be machined into a surface of outer plate 8 or inner plate 10. The plates can then be sandwiched together such that the leak detection chamber extends between the two plates.
  • mirror images of leak detection chamber could be machined into both outer plate 9 and inner plate 10, with each portion defining half of the chamber such that when the plates are sandwiched together, the full leak detection chamber is defined by and extends between the plates.
  • FIG. 7 Another embodiment is shown in FIG. 7, in which a plurality of elliptical chambers 42 is formed in header plate 6, for example, by machining.
  • Each chamber 42 extends between each aperture of a pair of coaxial apertures 12, 15 in outer plate 8 and inner plate 10, respectively.
  • the chambers 42 adjacent to one another within a row of apertures overlap one another to define openings 44, thereby interconnecting all of the chambers 42 in a given row.
  • Interconnecting passages 46 extend between selected chambers 42 of adjacent rows of apertures. Therefore, the combination of chambers 42, openings 44 and passages 46 defines leak detection chamber 11 '.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un échangeur thermique comportant une calandre munie d'un orifice d'entée et d'un orifice de sortie. Sur chaque extrémité de la calandre, on trouve une plaque de collecteur comprenant un élément intérieur et un élément extérieur qui définit une chambre de détection des fuites entre lesdits éléments. Une pluralité de tubes d'échangeur thermique sont positionnés dans la calandre. Chaque tube s'étend à travers une ouverture formée dans un élément intérieur et à travers une ouverture pratiquée dans un élément extérieur de chaque plaque de collecteur. Un joint est disposé dans un canal situé dans chaque ouverture de manière qu'il vienne en contact hermétique avec un tube d'échangeur thermique correspondant et une plaque correspondante. Un passage mène de la chambre de détection des fuites à l'extérieur de la plaque de collecteur.
PCT/US2001/031049 2000-09-28 2001-09-28 Échangeur thermique pourvu d'un appareil de scellement WO2002027256A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001296575A AU2001296575A1 (en) 2000-09-28 2001-09-28 Heat exchanger seal apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23628000P 2000-09-28 2000-09-28
US60/236,280 2000-09-28

Publications (3)

Publication Number Publication Date
WO2002027256A2 true WO2002027256A2 (fr) 2002-04-04
WO2002027256A3 WO2002027256A3 (fr) 2002-08-08
WO2002027256A9 WO2002027256A9 (fr) 2003-02-20

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US (1) US20020036078A1 (fr)
AU (1) AU2001296575A1 (fr)
WO (1) WO2002027256A2 (fr)

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KR101356946B1 (ko) * 2012-03-27 2014-01-29 주식회사 포스코 듀플렉스 스테인리스강의 제조방법
US9429365B2 (en) 2010-05-06 2016-08-30 Heatmatrix Group B.V. Heat exchanger tube sheet, a heat exchanger and a method of manufacturing a heat exchanger tube sheet

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NL1021111C2 (nl) * 2002-07-19 2004-01-23 Bloksma B V Koelinrichting.
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JP5128544B2 (ja) * 2009-04-20 2013-01-23 株式会社神戸製鋼所 プレートフィン熱交換器
US8815183B2 (en) 2009-08-31 2014-08-26 Corning Incorporated Zoned monolithic reactor and associated methods
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JP2013108686A (ja) * 2011-11-22 2013-06-06 Mdi Corp シェルアンドチューブ熱交換器
CN102519296A (zh) * 2011-12-27 2012-06-27 中冶焦耐(大连)工程技术有限公司 一种换热器端部密封结构
DE102012003772B4 (de) * 2012-02-24 2014-01-23 Audi Ag Lautsprechersystem für ein Kraftfahrzeug
JP5982221B2 (ja) 2012-08-21 2016-08-31 株式会社神戸製鋼所 プレートフィン熱交換器及びプレートフィン熱交換器の補修方法
CN102914189A (zh) * 2012-11-02 2013-02-06 江苏巴威工程技术股份有限公司 模块化抽取式换热器
US9303924B1 (en) * 2014-10-14 2016-04-05 Neptune-Benson, Llc Multi-segmented tube sheet
RU2614707C2 (ru) * 2015-08-13 2017-03-28 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Аппарат для охлаждения суспензий и растворов
US20170292798A1 (en) * 2016-04-06 2017-10-12 Fluor Technologies Corporation Leak detection in heat exchanger systems
EP3246650B1 (fr) * 2016-05-20 2018-12-19 Valeo Systemes Thermiques Collecteur pour échangeur de chaleur, en particulier pour un radiateur de véhicule automobile
US11318577B2 (en) * 2016-06-16 2022-05-03 Texas Instruments Incorporated System and method of delivering slurry for chemical mechanical polishing
JP6911469B2 (ja) * 2017-03-31 2021-07-28 株式会社Ihi 熱処理装置
US11268877B2 (en) 2017-10-31 2022-03-08 Chart Energy & Chemicals, Inc. Plate fin fluid processing device, system and method
TWI725422B (zh) * 2018-05-31 2021-04-21 技嘉科技股份有限公司 液冷導熱裝置、液冷循環系統以及漏液偵測方法
EP4124738A1 (fr) * 2021-07-26 2023-02-01 Airbus Operations (S.A.S.) Ensemble propulsif pour aéronef

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE558913A (fr) *
FR1405960A (fr) * 1964-06-03 1965-07-16 D Applic Mecaniques Soc Ind Dispositif d'étanchéité, applicable aux échangeurs tubulaires à surface
US4368694A (en) * 1981-05-21 1983-01-18 Combustion Engineering, Inc. Leak detection system for a steam generator
EP0148699A1 (fr) * 1983-12-30 1985-07-17 Commissariat A L'energie Atomique Dispositif de détection et de localisation de fuite sur les tubes de faisceau d'un générateur de vapeur
JPS62108999A (ja) * 1985-11-07 1987-05-20 Mitsubishi Heavy Ind Ltd 伝熱管の支持構造

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE558913A (fr) *
FR1405960A (fr) * 1964-06-03 1965-07-16 D Applic Mecaniques Soc Ind Dispositif d'étanchéité, applicable aux échangeurs tubulaires à surface
US4368694A (en) * 1981-05-21 1983-01-18 Combustion Engineering, Inc. Leak detection system for a steam generator
EP0148699A1 (fr) * 1983-12-30 1985-07-17 Commissariat A L'energie Atomique Dispositif de détection et de localisation de fuite sur les tubes de faisceau d'un générateur de vapeur
JPS62108999A (ja) * 1985-11-07 1987-05-20 Mitsubishi Heavy Ind Ltd 伝熱管の支持構造

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 011, no. 327 (M-635), 24 October 1987 (1987-10-24) -& JP 62 108999 A (MITSUBISHI HEAVY IND LTD), 20 May 1987 (1987-05-20) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9429365B2 (en) 2010-05-06 2016-08-30 Heatmatrix Group B.V. Heat exchanger tube sheet, a heat exchanger and a method of manufacturing a heat exchanger tube sheet
KR101356946B1 (ko) * 2012-03-27 2014-01-29 주식회사 포스코 듀플렉스 스테인리스강의 제조방법

Also Published As

Publication number Publication date
WO2002027256A9 (fr) 2003-02-20
AU2001296575A1 (en) 2002-04-08
US20020036078A1 (en) 2002-03-28
WO2002027256A3 (fr) 2002-08-08

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