US3545534A - Heat exchangers - Google Patents

Heat exchangers Download PDF

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Publication number
US3545534A
US3545534A US779898A US3545534DA US3545534A US 3545534 A US3545534 A US 3545534A US 779898 A US779898 A US 779898A US 3545534D A US3545534D A US 3545534DA US 3545534 A US3545534 A US 3545534A
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US
United States
Prior art keywords
support
tubes
members
tube
attachment
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 - Lifetime
Application number
US779898A
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English (en)
Inventor
Harold John Coles
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.)
Atomic Power Constructions Ltd
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Atomic Power Constructions Ltd
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 Atomic Power Constructions Ltd filed Critical Atomic Power Constructions Ltd
Application granted granted Critical
Publication of US3545534A publication Critical patent/US3545534A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F28D7/02—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 helically coiled
    • F28D7/024—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 helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F28F9/0132—Auxiliary supports for elements for tubes or tube-assemblies formed by slats, tie-rods, articulated or expandable rods

Definitions

  • a heat exchanger comprising helically wound tubes mounted upon a support structure comprising striplike support members apertured and slottedl at intervals along their length, and attachment members which are mounted upon the support members by entering arms on the attachment members through the slots and sliding the former to a desired position on the support member.
  • the attachment members have supporting surfaces .for receiving the tubes and a boss which fits into an aperture intoan adjacent support member.
  • a support assembly comprising three support platesdisposed radially with respect to the axis of the helically wound tubes.
  • Each plate has a matrix of holes drilled in it at spaces corresponding to the helix lead and to thelateral spacing of adjacent helices.
  • the radially innermost tube helixi s fitted by rotating it axially and feeding its leading end in succession through the corresponding holes in the three support plates.
  • a weld or some other mechanical lock is formed, at each hole, between tube and plate, and the process is repeated for each tube helix until the entire heat exchanger has been built up.
  • Such a method is clearly extremely time-consumingand therefore costly.
  • a heat exchanger comprises a plurality of tubes, a plurality of support members arranged substantially transversely of the tubes and. a plurality of attachment members securing the tubes to the support members, the tubes being arranged in parallel layers with support members between adjacent layers, and the attachment mem bers of one layer of tubes beingused to carry the support members of the next adjacent layer of tubes.
  • the attachment members may comprise clips adapted to I secure one, two or more adjacent tubes to the support.
  • the heat exchanger may comprise a plurality of tubes, a plurality of support members, arranged substantially transversely of the tubes and a plurality of attachment members securing the tubes to the support members.
  • the tubes are provided substantially in the form of helices.
  • the terrir helix is not used in a strictly mathematical sense but is intended to cover any generally helical configuration whether of circular transverse cross section or square, rectangular, elliptical or other shape.
  • a tube of helical form may be deliberately distorted in different directions at successive points of support along its length, in order to induce position retaining stressing atthe support points in order to derive a position retention force; such systems are described in greater'detail in copending application 37398168.
  • the attachment members may consist of clips having one or w more curved parts which engage thetube and a base part which is secured to the support member.
  • the clip may be. of integral construction or the curved part or parts may be separate from the base part.
  • each curvedpart may be resilient.
  • each clip is so formed that it has a surface for receiving a support memberof the next adjacent group.
  • FIGS. 10, 11 and 12 are front
  • the support members may be strips apertured at regular intervals in which case the clips may have bosses, a support
  • the tubes may contain fissile material in which case the heat exchanger becomes a fuel element which may be helical. In this case heat is exchanged between the fissile material and coolant circulated past the tubes.
  • One method of assembling a heat exchanger embodying the invention comprises the steps of temporarily positioning a first group of support members entering a first substantially helically wound tube over the first group, securing the first helix to the support members of the first group, positioning a second group of support members round and spaced from the first tube, entering a second substantially helically wound tube over the second group, and securing the second tube to the support members of the second group.
  • the heat exchanger is built outwards by starting at an innermost point, adding intermediate tubes and fixing the outermost tubcfllast of all.
  • construction may proceed in an inward direction.
  • the first tube to be positioned would thus be the outermost one.
  • This method comprises the steps of temporarily positioning a first group of support members, entering a first substantially helically wound tube into the first group, securing the first tube to the support members of the first group, entering a second group of support'members into the first helix, entering a second substantially helically wound tube into the second group of support members, and securing the second tube to the support members of the second group. 7
  • construction may be carried out by the use of both methods concurrently or sequentially. It should be noted that the choice of construction method is not necessarily related to the type of attachmentu'sed for fixing the tube to the support strip.
  • FIG. 1 is an end view of a first embodiment in diagrammatic form only, a 7
  • FIG. 2 is a section on the line'II-III of FIG. 1,
  • FIGS. 3 and 4 are front and side views respectively of part of a support member
  • FIG. 5 is a section on the line V-V of FIG. 3,
  • FIGS. 6, 7 and 8 are top, side and front views respectively of an attachment member
  • FIG. 9 is a side view of part of the: first embodiment after asplan and side views respectively of part of another-form of attachment member,
  • FIGS. 13, 14 are side and front views respectively of another part of the other form of attachment member.
  • FIG. 15 is a side view of part of the second embodiment after assembly. 1
  • FIGS. 1 and 2 show an assembled heat exchanger in diagrammatic form only.
  • the heat exchanger comprises an outer cylindrical shell 1 and an inner cylindrical shell 2 interconnected at their ends by three radial beams 3.
  • the annulus defined by the shells l, 2 contains a plurality of coaxial heli cally wound tubes 4 each of whichis supported by a group of support members each comprising an elongated strip 5 suspended from the uppermost beams 3.
  • Each tube is attached to the support member of its supporting group by attachment means not shown in FIGS. 1 and 2.
  • the various helically wound tubes may or may not be interconnected, that they may be of differing lead, that is, helix angle, although the pitches are preferably the same, and they may or may not extend the full length of the boilers. It is not necessary that the helices should all be wound in the same direction.
  • each elongated support member comprises along stainless steel strip 6 having holes 7 drilled through it at regularly-spaced intervals.
  • the strip is stepped along each long side as at 8 in FIG. 5 and the known as Nimonic 80A has curved tube grips which extend from a central part 1 l which is slotted as at 12, theends of the part being intume'd as at 13.
  • the face of the clip is stepped as at 14 and has a central boss 15 beveled at 16 whose height is just slightly less than the maximum thickness of strip 6.
  • the innermost helically wound tube is dealt with first. Three strips 6 are to be used to support the helix and these strips are held temporarily in the positions they will occupy on completion of the entire assembly. The helix is'then slid down over the three strips and temporarily supported in position. Tube support clips are then engaged with the helix by springing the grips 10 over adjacent turns of the helix close to the point of attachment to the support plate and thenmounted upon the latter by passing the inturned ends 13 through a convenient slot 9 and sliding the clip along the strip until the attachment point is reached. This process is repeated until all the turns are clipped to each support plate every time they pass it. This is shown in FIG. 9 where adjacent turns 17, 18, 19 and 20 of the helix are clipped b'y clips 21 and 22 to a support strip 23.
  • FIG. 9 shows turns of two further helices 31, 32 secured by clips 33, 34 to support strips 35, 36 respectively.
  • the inner shell is then inserted through the assembled helices, and the outer shell positioned round the helices.
  • the radialbeams are then placed in position and secured to the shells and to the support strips.
  • the attachment clip need not be of integral construction and an alternative clip of two part construction will now be described.
  • the clip has a body part 37 shown in FIGS. 10, 11 and 12 having a slot 38 and intumed ends 39.
  • a boss 40 extends centrally from face 41 of the body.
  • the grip portion of the clip is separate and is shown in FIGS. 13 and 14. It comprises a metal sheet 42 bent into the form of a shallow U and has a central hole 43.
  • the invention has been described in relation to asystem in which the innermost coil is. positioned first; given a large It will be understood that regularity of the lead and pitch of the helices is not essential.
  • the support system can readily beadapted to support helices of irregular lead and pitch.
  • a heat exchanger comprising in combination a first layer of tubes, a fust series of support members of elongated form disposed transversely with respect to the tubes of the first layer, first attachment members mounted on the support members and carrying the tubes of the first layer, a second layer of tubes, a second series of support members'of elongated form disposed transversely with respect to the tubes of the second layer, the support members of the second series
  • the body of the clip is of stainless steel whilst I positive jointing operative has been performed up to this stage to assemble the two part clip.
  • the second row 46 of support strips is positioned by engaging the holes therein with the bosses 40.
  • the bosses 40 are now welded to the second support strips 46, this weld thus forms the dual function of attaching the second support strips to the assembly, and of attaching to each other the two parts of the clip.
  • lt may be preferable, for example when the external heat transfer fluid is a reactor coolant gas, and for where the boiler is relatively inaccessible, to avoid the loose or being carried by the first attachnient members, second attachment members mounted upon the support members of the second series and carrying the tubes of the second layer support members being of striplike form and having slots at spaced intervals along the length of the strip, and said attachment members having inturned parts adapted to be entered through said slots in order to mount the attachment members on the support member.
  • a heat exchangeras claimed in claim 1 in which the support members are apertured at spaced intervals along their length, and in which the attachment members have bosses which locate in the apertures to enable the attachment'rnembers to carry support members.
  • each attachment member consists of a curved part which engages a tube and a base part by which the attachment member is mounted upon a support member.
  • each 'a't-f" tachment member consists of a first curved part which en-. gages a tube and a second base part separate from the first part and by means of which the attachment member is mounted upon a support member.

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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)
US779898A 1967-12-01 1968-11-29 Heat exchangers Expired - Lifetime US3545534A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB54900/67A GB1244611A (en) 1967-12-01 1967-12-01 Improvements in or relating to heat exchangers

Publications (1)

Publication Number Publication Date
US3545534A true US3545534A (en) 1970-12-08

Family

ID=10472406

Family Applications (1)

Application Number Title Priority Date Filing Date
US779898A Expired - Lifetime US3545534A (en) 1967-12-01 1968-11-29 Heat exchangers

Country Status (5)

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US (1) US3545534A (enrdf_load_stackoverflow)
BE (1) BE724748A (enrdf_load_stackoverflow)
DE (1) DE1811586A1 (enrdf_load_stackoverflow)
FR (1) FR1597674A (enrdf_load_stackoverflow)
GB (1) GB1244611A (enrdf_load_stackoverflow)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3677339A (en) * 1970-01-15 1972-07-18 Alfred J Perrin Coiled tube banks
US3742567A (en) * 1967-03-28 1973-07-03 Sulzer Ag Method of making a heat transfer device
US3782455A (en) * 1972-05-01 1974-01-01 Atomic Energy Commission Heat exchanger tube mounts
US3854529A (en) * 1971-07-26 1974-12-17 Westinghouse Electric Corp Tube support system for a heat exchanger
US3929189A (en) * 1974-03-20 1975-12-30 Babcock & Wilcox Co Heat exchanger structure
US3998268A (en) * 1975-03-04 1976-12-21 Westinghouse Electric Corporation Locking device for staggered fin-tubes
US4088184A (en) * 1976-03-10 1978-05-09 General Atomic Company Tube support and protection system for helical coil heat exchangers
US4167211A (en) * 1976-03-31 1979-09-11 Linde Aktiengesellschaft Interlocking spacer members for coiled tube assembly
US4190104A (en) * 1976-11-17 1980-02-26 Sulzer Brothers Limited Heat exchanger having helically wound tube coils
US4337827A (en) * 1980-10-01 1982-07-06 The Babcock & Wilcox Company Helical steam generator tube support
US4356795A (en) * 1980-01-11 1982-11-02 Stein Industrie Device for fixing a panel of heat-exchange tubes
US4371027A (en) * 1975-09-10 1983-02-01 Jacobsen Orval E Economizer with an integral gas bypass
US4480594A (en) * 1984-02-21 1984-11-06 Combustion Engineering, Inc. Economizer support
US4550690A (en) * 1984-11-19 1985-11-05 Chevron Research Company Steam tube yoke and hanger assembly insulation cover
JPS63142585U (enrdf_load_stackoverflow) * 1987-02-27 1988-09-20
US5660165A (en) * 1994-06-07 1997-08-26 Bradford White Corporation Back-up heater
US6142216A (en) * 1994-07-27 2000-11-07 Bradford White Corporation Indirect water heater
US20050067154A1 (en) * 2003-09-30 2005-03-31 Michael Gordon Indirect water heater and method of manufacturing same
US20050139349A1 (en) * 2003-12-29 2005-06-30 Bradford White Corporation Multi-wall heat exchanger for a water heater
US20120193074A1 (en) * 2009-07-06 2012-08-02 Babcock Borsig Service Gmbh Tube Register for Indirect Heat Exchange
US20150129166A1 (en) * 2013-11-12 2015-05-14 Amar Siri Wanni Tube Support for Vibration Mitigation
US9851152B2 (en) * 2014-01-23 2017-12-26 Rolls-Royce Plc Heat exchanger support
US20180112922A1 (en) * 2014-02-28 2018-04-26 Denso International America, Inc. Insert for heat exchanger
CN108731537A (zh) * 2018-04-24 2018-11-02 中国昆仑工程有限公司 适用于缠绕管式换热器的新式异形垫条
WO2024200456A1 (de) * 2023-03-31 2024-10-03 Alleima Gmbh Wärmetauscher
CN119178345A (zh) * 2024-11-23 2024-12-24 山东豪迈机械制造有限公司 一种绕管换热器垫条及其组合结构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2121348B1 (enrdf_load_stackoverflow) * 1971-01-05 1974-02-15 Babcock Atlantique Sa
CN115790242B (zh) * 2023-01-29 2023-05-09 江苏银环精密钢管有限公司 一种卡齿及高温气冷堆蒸汽发生器换热单元组件组装方法

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742567A (en) * 1967-03-28 1973-07-03 Sulzer Ag Method of making a heat transfer device
US3677339A (en) * 1970-01-15 1972-07-18 Alfred J Perrin Coiled tube banks
US3854529A (en) * 1971-07-26 1974-12-17 Westinghouse Electric Corp Tube support system for a heat exchanger
US3782455A (en) * 1972-05-01 1974-01-01 Atomic Energy Commission Heat exchanger tube mounts
US3929189A (en) * 1974-03-20 1975-12-30 Babcock & Wilcox Co Heat exchanger structure
US3998268A (en) * 1975-03-04 1976-12-21 Westinghouse Electric Corporation Locking device for staggered fin-tubes
US4371027A (en) * 1975-09-10 1983-02-01 Jacobsen Orval E Economizer with an integral gas bypass
US4088184A (en) * 1976-03-10 1978-05-09 General Atomic Company Tube support and protection system for helical coil heat exchangers
US4167211A (en) * 1976-03-31 1979-09-11 Linde Aktiengesellschaft Interlocking spacer members for coiled tube assembly
US4190104A (en) * 1976-11-17 1980-02-26 Sulzer Brothers Limited Heat exchanger having helically wound tube coils
US4356795A (en) * 1980-01-11 1982-11-02 Stein Industrie Device for fixing a panel of heat-exchange tubes
US4337827A (en) * 1980-10-01 1982-07-06 The Babcock & Wilcox Company Helical steam generator tube support
EP0049038A3 (en) * 1980-10-01 1983-03-16 The Babcock & Wilcox Company Tube support structures
US4480594A (en) * 1984-02-21 1984-11-06 Combustion Engineering, Inc. Economizer support
US4550690A (en) * 1984-11-19 1985-11-05 Chevron Research Company Steam tube yoke and hanger assembly insulation cover
JPS63142585U (enrdf_load_stackoverflow) * 1987-02-27 1988-09-20
US5660165A (en) * 1994-06-07 1997-08-26 Bradford White Corporation Back-up heater
US6142216A (en) * 1994-07-27 2000-11-07 Bradford White Corporation Indirect water heater
US20050067154A1 (en) * 2003-09-30 2005-03-31 Michael Gordon Indirect water heater and method of manufacturing same
US7007748B2 (en) 2003-09-30 2006-03-07 Bradford White Corporation Indirect water heater and method of manufacturing same
US20050139349A1 (en) * 2003-12-29 2005-06-30 Bradford White Corporation Multi-wall heat exchanger for a water heater
US20050139173A1 (en) * 2003-12-29 2005-06-30 Michael Gordon Multi-wall heat exchanger for a water heater
US7063132B2 (en) 2003-12-29 2006-06-20 Bradford White Corporation Multi-wall heat exchanger for a water heater
US7063133B2 (en) 2003-12-29 2006-06-20 Bradford White Corporation Multi-wall heat exchanger for a water heater
US10048012B2 (en) * 2009-07-06 2018-08-14 Babcock Borsig Service Gmbh Tube register for indirect heat exchange
US20120193074A1 (en) * 2009-07-06 2012-08-02 Babcock Borsig Service Gmbh Tube Register for Indirect Heat Exchange
US20150129166A1 (en) * 2013-11-12 2015-05-14 Amar Siri Wanni Tube Support for Vibration Mitigation
US9488419B2 (en) * 2013-11-12 2016-11-08 Amar Siri Wanni Tube support for vibration mitigation
US9851152B2 (en) * 2014-01-23 2017-12-26 Rolls-Royce Plc Heat exchanger support
US20180112922A1 (en) * 2014-02-28 2018-04-26 Denso International America, Inc. Insert for heat exchanger
US10274258B2 (en) * 2014-02-28 2019-04-30 Denso International America, Inc. Insert for heat exchanger
CN108731537A (zh) * 2018-04-24 2018-11-02 中国昆仑工程有限公司 适用于缠绕管式换热器的新式异形垫条
CN108731537B (zh) * 2018-04-24 2020-02-14 中国昆仑工程有限公司 适用于缠绕管式换热器的新式异形垫条
WO2024200456A1 (de) * 2023-03-31 2024-10-03 Alleima Gmbh Wärmetauscher
CN119178345A (zh) * 2024-11-23 2024-12-24 山东豪迈机械制造有限公司 一种绕管换热器垫条及其组合结构

Also Published As

Publication number Publication date
GB1244611A (en) 1971-09-02
FR1597674A (enrdf_load_stackoverflow) 1970-06-29
BE724748A (enrdf_load_stackoverflow) 1969-05-02
DE1811586A1 (de) 1969-10-16

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