EP0113439A1 - Supporting device for heat exchanger tubes - Google Patents

Supporting device for heat exchanger tubes Download PDF

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Publication number
EP0113439A1
EP0113439A1 EP83112191A EP83112191A EP0113439A1 EP 0113439 A1 EP0113439 A1 EP 0113439A1 EP 83112191 A EP83112191 A EP 83112191A EP 83112191 A EP83112191 A EP 83112191A EP 0113439 A1 EP0113439 A1 EP 0113439A1
Authority
EP
European Patent Office
Prior art keywords
tube
supporting device
tubes
heat exchanger
connecting rod
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.)
Withdrawn
Application number
EP83112191A
Other languages
German (de)
English (en)
French (fr)
Inventor
Riccardo Belleli
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.)
Belleli SpA
Original Assignee
Belleli SpA
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 Belleli SpA filed Critical Belleli SpA
Publication of EP0113439A1 publication Critical patent/EP0113439A1/en
Withdrawn legal-status Critical Current

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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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/10—Movable elements, e.g. being pivotable
    • F28F2280/105—Movable elements, e.g. being pivotable with hinged connections

Definitions

  • the invention relates to a supporting device for heat exchanger tubes.
  • header directly stresses the header to which the tubes are conducted, and,in view of the tubes being usually provided in a large number, the header is to accept a high stress which causes no concern where said header is constructed with a large thickness dimension and has a circular cross-section of considerable rigidity, but cannot be readily taken up by headers which, for some thermal reasons, must be constructed with thin thickness dimensions and exhibit poor rigidity, as is the case,for example, with very slim headers with quadrangular cross-section such as are used in sodium-air exchangers for nuclear plants.
  • This invention is directed to provide a supporting device for heat exchanger tubes which can ensure substantial cancellation of the longitudinal forces transferred from the tubes to the header.
  • the proposed aim and cited object are achieved by a supporting device for heat exchanger tubes, as defined in Claim 1.
  • the device is characterized in that it comprises a sleeve associated with the external surfaces of each of the tubes, connected with the end of a connecting rod substantially hinged at the other end to a carrier element, said carrier element being constituted, for at least one connecting rod, by the exchanger frame.
  • the carrier element whereto a connecting rod connected to a sleeve associated with one tube is hinged, is formed by the sleeve associated with an adjacent tube.
  • each tube becomes supported by a connecting rod which, in its movements caused by the tube expansions, generates no forces along the axes of the tubes themselves, which accordingly, will impose no longitudinal forces on the header to which they are connected.
  • a finned tube of a heat exchanger with the external surface whereof, as suitably stripped of fins at the selected area, there is associated the sleeve 2 formed by the half-shells 2a and 2b clamped around the tube by the action of the bolts 3 and 4.
  • the stem of the bolt 3 forms the pivot pin for the connecting rod 5, which, with its other end, is hinged at 6 to the carrier element comprising the small ears. 7 and 8 made rigid with the structure 9 of the exchanger frame.
  • the sleeve 2 is passed freely through the hole 10 formed in the plate 11, rigid with the structure of the exchanger frame, to which there are attached, opposedly in a substantially perpendicular direction to the plane containing the connecting rod 5, the small plates 12 and 13 by means of screws such as 12a; said small plates serve the function of restricting the transverse movements of the tube 1, as caused by seismic events or vibration induced by the fluid sweeping past it, to contact respectively the ridges 14 and 15 provided on the half-shells 2a and 2b. Said ridges and the sides of the small plates adjoining them are coated with a wear-preventing material such as stellite, in view of the likelihood of relative movements, however small these may be, caused by thermal expansion differentials between the exchanger frame and header.
  • a wear-preventing material such as stellite
  • the tube 16 is supported similarly to the tube 1: associated with the external surface thereof is in fact the sleeve 17, formed by the two half-shells 17a and 17b clamped together by the bolts 18 and 19, connected to one end of the connecting rod 20 pivoted with the other end at 21 to the carrier element formed by the ears 22 and 23 rigid with the plate 11.
  • the constraint to the lateral movements of the tube 16 is provided by the plates 24 and 25 being secured to the edges of the hole 26 wherethrough there is inserted the sleeve 17, by contact with the ridges 27 and 28 provided on the half-shells 17a and 17b.
  • the tubes 2 and 17 shown in the drawing may extend not only in a horizontal or a vertical plane, but in any inclined plane, obtaining the same effect by the above described supporting structure. Moreover, the entire structure shown in Fig. 1 may be rotated through 90° about a horizontal axis parallel to that of the tubes 2 and 17. The same effect would be obtained also in such case by the supporting system. In addition the sliding engagement between the ridges 14,15; 27,28 and the plates 12,13; 24,25, respectively, would become in part effective depending on the gravity action on the tubes.
  • the invention provides a support for heat exchanger tubes which is almost free of forces along the axes of the tubes, which accordingly, can be connected without problems even to headers exhibiting poor inherent rigidity.
  • connecting rod connected with one end to a sleeve could be hinged at the other end, rather than to the structure of the exchanger frame, to the adjacent sleeve, which may be in turn carried on a connecting rod pivoted at the other end to another sleeve or to the stationary structure, and so on.
  • the connecting rod 20 may be omitted and in its place a connecting rod 205, shown in dotted lines, may be hinged with one end thereof to the sleeve 17 and with the opposite end thereof to the sleeve 2 at the bolts 18 and 4, respectively. It may be advantageous to select this type of connection between tubes which are at a substantial lateral distance from one another in order to have the connecting rod 205 with a sufficient length.

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)
EP83112191A 1982-12-10 1983-12-05 Supporting device for heat exchanger tubes Withdrawn EP0113439A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT24685/82A IT1153396B (it) 1982-12-10 1982-12-10 Dispositivo di supporto di tubi negli scambiatori di calore
IT2468582 1982-12-10

Publications (1)

Publication Number Publication Date
EP0113439A1 true EP0113439A1 (en) 1984-07-18

Family

ID=11214387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112191A Withdrawn EP0113439A1 (en) 1982-12-10 1983-12-05 Supporting device for heat exchanger tubes

Country Status (2)

Country Link
EP (1) EP0113439A1 (it)
IT (1) IT1153396B (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0165840A1 (fr) * 1984-05-25 1985-12-27 Novatome Echangeur de chaleur pour le refroidissement d'un métal liquide par de l'air

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2841347A (en) * 1955-05-13 1958-07-01 Polymer Corp Compensating pipe support
GB1075104A (en) * 1965-02-18 1967-07-12 Steinmueller Gmbh L & C Improvements in or relating to supporting means, for example for tubes
FR1575097A (it) * 1967-07-24 1969-07-18
GB2049148A (en) * 1979-04-30 1980-12-17 Gen Electric Heat exchanger tube support
US4294659A (en) * 1977-02-04 1981-10-13 United Kingdom Atomic Energy Authority Apparatus for use in a liquid alkali metal environment
EP0041454A1 (fr) * 1980-05-29 1981-12-09 Framatome Dispositif de maintien d'une tuyauterie sur un support

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2841347A (en) * 1955-05-13 1958-07-01 Polymer Corp Compensating pipe support
GB1075104A (en) * 1965-02-18 1967-07-12 Steinmueller Gmbh L & C Improvements in or relating to supporting means, for example for tubes
FR1575097A (it) * 1967-07-24 1969-07-18
US4294659A (en) * 1977-02-04 1981-10-13 United Kingdom Atomic Energy Authority Apparatus for use in a liquid alkali metal environment
GB2049148A (en) * 1979-04-30 1980-12-17 Gen Electric Heat exchanger tube support
EP0041454A1 (fr) * 1980-05-29 1981-12-09 Framatome Dispositif de maintien d'une tuyauterie sur un support

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0165840A1 (fr) * 1984-05-25 1985-12-27 Novatome Echangeur de chaleur pour le refroidissement d'un métal liquide par de l'air

Also Published As

Publication number Publication date
IT8224685A0 (it) 1982-12-10
IT8224685A1 (it) 1984-06-10
IT1153396B (it) 1987-01-14

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR

17P Request for examination filed

Effective date: 19850110

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19881009

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BELLELI, RICCARDO