EP0717252A2 - Dispositif de maintien des tubes d'un échangeur de chaleur - Google Patents

Dispositif de maintien des tubes d'un échangeur de chaleur Download PDF

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Publication number
EP0717252A2
EP0717252A2 EP95118100A EP95118100A EP0717252A2 EP 0717252 A2 EP0717252 A2 EP 0717252A2 EP 95118100 A EP95118100 A EP 95118100A EP 95118100 A EP95118100 A EP 95118100A EP 0717252 A2 EP0717252 A2 EP 0717252A2
Authority
EP
European Patent Office
Prior art keywords
tubes
band
tube
adjacent
held
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Withdrawn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
EP95118100A
Other languages
German (de)
English (en)
Other versions
EP0717252A3 (fr
Inventor
Ariane Kujas-Schröter
Miroslav Dr. Podhorsky
Horst Wittig
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.)
Balcke Duerr AG
Original Assignee
Balcke Duerr AG
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 Balcke Duerr AG filed Critical Balcke Duerr AG
Publication of EP0717252A2 publication Critical patent/EP0717252A2/fr
Publication of EP0717252A3 publication Critical patent/EP0717252A3/fr
Withdrawn legal-status Critical Current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
    • F28F9/0132—Auxiliary supports for elements for tubes or tube-assemblies formed by slats, tie-rods, articulated or expandable rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/062—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing tubular conduits

Definitions

  • the invention relates to a device for holding, preferably made of plastic, parallel spaced tubes of the tube bundle of a heat exchanger with spacers arranged on the housing of the heat exchanger by means of a supporting frame, each tube touching at least on part of its circumference.
  • tube bundles are often used for the medium participating in the heat transfer, which consist of a plurality of tubes running parallel and at a distance from one another.
  • the tubes can run in a straight line between two tube plates, which are designed as part of a distribution or collection chamber.
  • U-shaped tubes can also be used for the tube bundle, the two ends of which are kept sealed in a common tube sheet; in this case the chamber formed using the tube sheet is divided into a distribution and collection chamber by at least one partition.
  • This holder comprises spacers, which touch each tube at least on a part of its circumference, and a suspension, with the aid of which the spacers are arranged in the desired plane of the heat exchanger housing.
  • plastic pipes are used to enable the heat exchanger to be used even for aggressive media.
  • plastic pipes are subject to a large linear expansion if there are temperature changes between the ambient temperature and the operating temperature when the system is started up or shut down.
  • the brackets consisting of spacers and suspension must allow relative movements between the spacers and the plastic pipes in order to rule out one-sided loads that can lead to a displacement or even kinking of the pipe.
  • dust deposits within the heat exchanger housing can change the sliding properties between the pipes and the spacers and that such deposits of dust or other contaminants must be removed periodically.
  • a device for holding plastic tubes of a heat exchanger in which the spacers are formed from thin-walled sleeves which are arranged next to one another and connected to one another in the plane of a frame. These sleeves, preferably with a circular cross section, are welded together. They surround the individual tubes of the tube bundle and support them by placing the tube surface on the outer surface of at least three adjacent sleeves.
  • the circular shape of the sleeves and their welding results in a very high rigidity of the spacers of the known holder.
  • the invention has for its object to develop a holder of the type known as known so that with a simple and inexpensive to manufacture construction on the one hand reliable support of the tubes is achieved and on the other hand necessary compensatory movements of the tubes are made possible.
  • the solution to this problem by the invention is characterized in that the spacers are formed by at least one band which at least affects the tubes of at least one row of tubes and that in turn runs between support bolts which are arranged on the support frame.
  • a holding device which is not only particularly inexpensive to manufacture and easy to assemble, but also, in addition to the necessary guidance of the pipes, also enables compensatory movements of the pipes transversely to the pipe longitudinal axis, which prevent the pipes from jamming on the spacers in the event of temperature-related changes in length, and this prevents kinking and thus damage to pipes made in particular of plastic.
  • the tubes of each row of tubes are held by a band running between two opposing support bolts, which, crossing adjacent tubes, wraps around the tubes over a partial length of their circumference.
  • the tubes of two adjacent rows of tubes are held by a band running between two opposing support bolts, which crosses the tubes of the two rows of tubes alternately over a partial length of their circumference in the space between two pairs of adjacent tubes. In both cases, the pipes are adequately guided while maintaining compensatory movements transverse to the longitudinal axis of the pipe.
  • Another embodiment of the tube holder according to the invention is that all tubes of the tube bundle are held by at least one band that runs between the tubes of adjacent rows of tubes and one after the other loops around a support bolt on opposite or adjacent legs of the support frame. This embodiment also results in a reliable guidance of the pipes with simple and inexpensive manufacture and while maintaining relative movements transverse to the longitudinal axis of the pipe.
  • each tube of the tube bundle can be held in the respective mounting plane by two bands which are offset in the longitudinal direction of the pipe and rotated in the circumferential direction by 90 ° on the individual pipes
  • the tapes which are preferably made of plastic, can have a flat rectangular cross-section, but according to the invention can also be formed with a tubular cross-section, so that there is a certain elasticity of the tapes transversely to their longitudinal direction, so that, instead of a line contact between the tapes and the respective tube, they are flat Support areas are created.
  • This can be achieved according to the invention in that the outer diameter of the tubular belts in the initial state is larger than the distance between adjacent pipes which is present transversely to the longitudinal direction of the belt, so that troughs result in the tubular belts, by means of which the contact area between the pipe and the belt is increased.
  • the heat exchanger shown schematically in FIGS. 1 to 4 comprises a housing 2 arranged in a support frame 1, in which a tube bundle 3 made of tubes 3a bent in a U-shape is arranged. The two ends of the tubes 3a are fastened in a sealed manner in a tube sheet 4, which forms part of a collector 5.
  • This collector 5 is divided by a partition 5a and provided with an inlet connection 5b and an outlet connection 5c, so that the medium participating in the heat exchange passes through the inlet connection 5b into one half of the collector 5. From here, the medium enters the U-shaped tubes 3a of the tube bundle 3. After flowing through the tubes 3a, the medium enters the other chamber of the collector 5 and exits the outlet nozzle 5c.
  • the other medium participating in the heat exchange enters the housing 2 via an inlet connection 2a (see FIG. 4) and leaves it via an outlet connection 2b, so that this second medium flows around the tubes 3a of the tube bundle 3 from the outside.
  • Support frames 6 for spacers are arranged within the housing 2 and are only indicated in FIGS. 1 and 2. These support frames 6 are suspended within the housing 2 on support rods 7, which are indicated in FIG. 2 and shown in cross section in FIGS. 3 and 4. Exemplary embodiments of spacers 6 are shown in FIGS. 5 to 9.
  • the spacers are each formed by at least one band 8 which at least touches the tubes 3a of at least one row of tubes of the tube bundle 3 and which in turn runs between support bolts 9 which are arranged on the support frame 6.
  • the tubes 3a of each row of tubes are held by a band 8 running between two opposing support bolts 9.
  • 5 shows two adjacent rows of tubes which are arranged parallel to one another and parallel to a leg of the support frame 6.
  • the belts 8 which each wrap the tubes 3a of a row of tubes over a partial length of their circumference cross each other between adjacent tubes 3a.
  • Each band 8 is therefore assigned only to the tubes 3a of a row of tubes.
  • the tubes 3a are held by two adjacent rows of tubes by a common band 8, which consequently intersects in the space between two pairs of adjacent tubes 3a.
  • This band 8 is also held on opposite sides of the frame 6 by support bolts 9. 6 also shows two belts 8 arranged next to one another, that is to say a total of four rows of pipes.
  • the wrap angle of the band 8 with respect to the tubes 3a is larger in this embodiment shown in FIG. 6 than the wrap angle of the bands 8 according to the embodiment according to FIG. 5.
  • the band 8 runs between the tubes of adjacent rows of tubes, which in the exemplary embodiment shown do not run parallel to the legs of the support frame 6, but at an angle of 45 ° to these support frame legs.
  • the band 8 is guided around supporting bolts 9 which are arranged on adjacent legs of the supporting frame 6. Since in this embodiment the tubes 3a are only held in a direction transverse to the longitudinal direction of the band 8, it is possible to arrange a second band 8 on the other side of the support frame 6, which is perpendicular to the first band 8 with respect to the tubes 3a . In this way, the tubes 3a are held in two directions perpendicular to each other. The two bands 8 thus engage in the circumferential direction rotated by 90 ° on the individual tubes 3a.
  • FIG. 8 shows that in the embodiment according to FIG. 7 the band 8 has a cross section which corresponds approximately to the distance which is perpendicular to the longitudinal direction of the band between adjacent tubes 3a. In the embodiment according to FIG. 8 there are quasi line contacts between the band 8 and the surface of the tubes 3a.
  • the cross section of the band 8 in the initial state can be larger than the distance of adjacent pipes 3a present transversely to the longitudinal direction of the band, as shown in FIG. 9. In this way, shell-like deformations result in the elastic material of the band 8, which leads to a flat contact between the band 8 and the tubes 3a. With such a configuration, it may be advantageous to design the strips with a tubular cross section.

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)
  • Supports For Pipes And Cables (AREA)
EP95118100A 1994-12-17 1995-11-17 Dispositif de maintien des tubes d'un échangeur de chaleur Withdrawn EP0717252A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944445137 DE4445137C2 (de) 1994-12-17 1994-12-17 Vorrichtung zur Halterung von Rohren eines Wärmeübertragers
DE4445137 1994-12-17

Publications (2)

Publication Number Publication Date
EP0717252A2 true EP0717252A2 (fr) 1996-06-19
EP0717252A3 EP0717252A3 (fr) 1997-11-19

Family

ID=6536163

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95118100A Withdrawn EP0717252A3 (fr) 1994-12-17 1995-11-17 Dispositif de maintien des tubes d'un échangeur de chaleur

Country Status (4)

Country Link
EP (1) EP0717252A3 (fr)
DE (1) DE4445137C2 (fr)
PL (1) PL311861A1 (fr)
TR (1) TR199501570A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787875A1 (fr) * 1998-12-29 2000-06-30 Valeo Thermique Moteur Sa Echangeur de chaleur a tubes souples, notamment pour une installation de refroidissement d'un moteur de vehicule automobile
WO2012155692A1 (fr) * 2011-05-19 2012-11-22 上海锅炉厂有限公司 Appareil d'assemblage et de positionnement d'une conduite de raccordement d'évacuation de membrane de collecteur et son procédé d'assemblage

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4217923A1 (de) 1992-05-30 1993-12-02 Gea Luftkuehler Happel Gmbh Vorrichtung zur Distanzierung von Wärmetauscherrohren

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068163A (en) * 1958-08-26 1962-12-11 Jr Edwin L Currier Method and means for supporting reactor fuel containers in an assembly
GB1101953A (en) * 1964-10-20 1968-02-07 Babcock & Wilcox Co Improvements in or relating to rod, pin and tube assemblies
AT304597B (de) * 1969-09-26 1973-01-10 Waagner Biro Ag Radialstromwärmetauscher
DE2052837C3 (de) * 1970-10-21 1975-10-16 Bolton, Lancashire (Grossbritannien) Rohrhalterung für Rohrbündel von Wärmetauschern
CA921020A (en) * 1971-03-19 1973-02-13 Her Majesty In Right Of Canada As Represented By Atomic Energy Of Canada Limited Tube bundle assembly
FR2581436B1 (fr) * 1985-05-03 1988-01-08 Technos Cie Perfectionnements aux procedes et dispositifs de bridage des faisceaux de tubes
US5213155A (en) * 1992-04-23 1993-05-25 The Atlantic Group, Inc. Method and apparatus for multiple locking a single row of heat exchanger tubes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4217923A1 (de) 1992-05-30 1993-12-02 Gea Luftkuehler Happel Gmbh Vorrichtung zur Distanzierung von Wärmetauscherrohren

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787875A1 (fr) * 1998-12-29 2000-06-30 Valeo Thermique Moteur Sa Echangeur de chaleur a tubes souples, notamment pour une installation de refroidissement d'un moteur de vehicule automobile
WO2012155692A1 (fr) * 2011-05-19 2012-11-22 上海锅炉厂有限公司 Appareil d'assemblage et de positionnement d'une conduite de raccordement d'évacuation de membrane de collecteur et son procédé d'assemblage

Also Published As

Publication number Publication date
TR199501570A2 (tr) 1996-07-21
EP0717252A3 (fr) 1997-11-19
DE4445137C2 (de) 1998-01-15
DE4445137A1 (de) 1996-06-27
PL311861A1 (en) 1996-06-24

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