EP0260403B1 - Ecarteur avec barreaux d'une grille d'espacement de tubes - Google Patents

Ecarteur avec barreaux d'une grille d'espacement de tubes Download PDF

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Publication number
EP0260403B1
EP0260403B1 EP87110263A EP87110263A EP0260403B1 EP 0260403 B1 EP0260403 B1 EP 0260403B1 EP 87110263 A EP87110263 A EP 87110263A EP 87110263 A EP87110263 A EP 87110263A EP 0260403 B1 EP0260403 B1 EP 0260403B1
Authority
EP
European Patent Office
Prior art keywords
grid
spacer
bars
frame
bolt
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
EP87110263A
Other languages
German (de)
English (en)
Other versions
EP0260403A1 (fr
Inventor
Ulrich Engel
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.)
MAN Gutehoffnungshutte GmbH
Original Assignee
MAN Gutehoffnungshutte GmbH
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 MAN Gutehoffnungshutte GmbH filed Critical MAN Gutehoffnungshutte GmbH
Publication of EP0260403A1 publication Critical patent/EP0260403A1/fr
Application granted granted Critical
Publication of EP0260403B1 publication Critical patent/EP0260403B1/fr
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
    • 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
    • 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
    • F28F9/0135—Auxiliary supports for elements for tubes or tube-assemblies formed by grids having only one tube per closed grid opening
    • F28F9/0136—Auxiliary supports for elements for tubes or tube-assemblies formed by grids having only one tube per closed grid opening formed by intersecting strips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/20—Supporting arrangements, e.g. for securing water-tube sets
    • F22B37/205—Supporting and spacing arrangements for tubes of a tube bundle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/355—Heat exchange having separate flow passage for two distinct fluids
    • Y10S165/40—Shell enclosed conduit assembly
    • Y10S165/401—Shell enclosed conduit assembly including tube support or shell-side flow director
    • Y10S165/416—Extending transverse of shell, e.g. fin, baffle
    • Y10S165/423—Bar
    • Y10S165/424—Bar forming grid structure

Definitions

  • the invention is based on a spacer with lattice bars of a pipe spacer grid for guiding pipes, for example in steam generators, the one-piece lattice being formed from crossing lattice bars arranged in more than one plane and being surrounded by a one-piece frame which has circumferential grooves for receiving of the ends of the lattice bars, the mutual spacing of the lattice bars in the frame being carried out by spacer bolts, each having a transverse slot and a longitudinal bore.
  • Adherence to the geometric lattice structure is achieved in particular by fastening the ends of the lattice bars in the frame construction of the grating.
  • the lattice bars are fastened in the frame in different ways.
  • the bars are rigidly connected to the frame.
  • spacers are provided which allow a certain freedom of movement for the grille, which enables thermal compensation. This compensation option is important if the grating and frame are made of different materials.
  • the preamble of the main claim of the invention is based on DE-A-22 62 621.
  • the two continuous grooves arranged on the end face in the frame for receiving the lattice bars are slightly larger in width than the width of the bars.
  • Sleeves provided with a slot on one side are inserted into the frame in such a way that the slot slot of the sleeve is aligned with the groove. Before installing the bars, the sleeves must be inserted into the corresponding holes in the frame and aligned to accommodate the bars.
  • the grids can be prefabricated overall, i.e. equipped with bars can be inserted into the housing. For reasons of assembly, only one half of a grid is fitted with bars. The fitters have to climb through the alternating right and left halves of a grid, which are free of bars.
  • DE-A-25 41 986 describes the manufacture of a grating in such a way that the connection of the multi-part frame to the bars is carried out in that the teeth arranged on the upper and lower ring of the multi-part frame in recesses in the annular, inside of blocks located in the frame.
  • the bars are guided in slots in the ring-shaped blocks of the frame.
  • the object of the invention is to provide for a tube spacer grid for guiding the tube bundle of heat exchangers, in particular steam generators, an improved and simple to produce spacer in the circumferential lattice frame compared to the prior art, which on the one hand ensures a secure fixation of the lattice bars for the tubing and assembly to avoid moving the bars.
  • this fixation should not be form-fitting, because different thermal expansions between bars and frames must be absorbed due to the material differences in bars and frames.
  • Claim 2 which refers back to the main claim, relates to the method for producing a pipe spacer grid with a spacer.
  • the simple to produce spacer bolts according to the invention offer the possibility of using a one-piece lattice frame with the smallest possible profile cross-section and ensure precise positioning of the bars in the lattice frame.
  • a pasty plastic is inserted between the bolt slot and the lattice rod through the longitudinal hole in the spacer bolt, which creates a non-positive connection between the bolt and the lattice rod after curing.
  • the holes in the one-piece grid frame are each closed with an upper and lower cover ring.
  • the plastic introduced when the heat exchanger is in operation, becomes liquid and is rinsed out by the medium which flows around the holder with a certain temperature, so that temperature-related expansions can take place within the construction of the lattice bar frame.
  • a spacer bolt (1) is inserted into a hole in the lattice frame (2) and secured by an overlying cover ring (4).
  • a transverse slot (5) in the spacer bolt (1) extends over the lattice bar (3) and positions it in the lattice frame (2).
  • the spacer pin engages in a recess (7) in the lattice bar (3) and thus prevents the lattice bar (3) from being pulled out of the lattice frame (2).
  • a paste-like plastic (9) can be inserted between the bolt slots (5) and tubular bars (3) through a longitudinal hole (8) after the lattice frame (2) has been fitted with bars (3) and spacer bolts (1). After the plastic (9) has hardened, a non-positive connection is made between the spacer bolts (1) and the lattice bars (3), so that the pipe spacing grid remains positioned and fixed in the lattice frame (2) for the subsequent operations.
  • the plastic (9) is rinsed out by the medium surrounding it at a certain temperature and thus releases the lattice rod (3) for temperature-related linear expansion.

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)
  • Sewage (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Claims (2)

  1. Support d'écartement des barreaux de grille d'écartement de tube pour le guidage des tubes par exemple dans les générateurs de vapeur, la grille en une seule pièce étant formée par des barreaux (3) se croisant, disposés sur plus d'un plan et étant entourée d'un cadre (2) en une seule pièce, qui comporte côté intérieur des rainures circulaires pour recevoir les extrémités des barreaux (3), la fixation de l'écartement réciproque des barreaux (3) de la grile dans le cadre (2) se fait par des broches d'écartement (1), qui comportent chacune une rainure transversale (5) et un alésage longitudinal (8), caractérisé en ce que la rainure transversale (5) de chaque broche d'écartement (1) est réalisée en continu et ouverte sur une surface de base de la broche d'écartement et comporte un ajustement avec jeu vis-à-vis du barreau de grille pour recevoir le barreau lui-même (3), en ce que la rainure transversale (5) est décalée sur sa hauteur et comporte par suite une saillie (6), qui vient en prise dans un évidement correspondant (7) du barreau de grille (3), en ce que l'alésage (8) est réalisé comme alésage de passage ou de trou borgne et permet la mise en place d'une matière synthétique pateuse (9) entre la rainure transversale (5) et le barreau (3) et en ce que les broches d'écartement (1) sont bloquées par un anneau de recouvrement (4) circulaire.
  2. Procédé pour la réalisation d'une grille d'écartement de tubes avec un support d'écartement selon la revendication 1, caractérisé en ce qu'après la fixation de l'écartement des barreaux (3) dans le cadre de la grille (2) par la mise en place des broches d'écartement (1), on introduit par l'alésage longitudinal (8) dans la broche d'écartement (1) de la matière synthétique pateuse, qui après durcissement produit une liaison par interpénétration par la force de la broche (1) et du barreau de grille (3) et qui par l'utilisation dans un échangeur thermique se trouve éliminée en marche à une température déterminée.
EP87110263A 1986-09-19 1987-07-16 Ecarteur avec barreaux d'une grille d'espacement de tubes Expired - Lifetime EP0260403B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863631886 DE3631886A1 (de) 1986-09-19 1986-09-19 Abstandshalter fuer gitterstaebe eines rohrabstandsgitters in waermetauschern
DE3631886 1986-09-19

Publications (2)

Publication Number Publication Date
EP0260403A1 EP0260403A1 (fr) 1988-03-23
EP0260403B1 true EP0260403B1 (fr) 1991-05-15

Family

ID=6309923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87110263A Expired - Lifetime EP0260403B1 (fr) 1986-09-19 1987-07-16 Ecarteur avec barreaux d'une grille d'espacement de tubes

Country Status (6)

Country Link
US (1) US4784220A (fr)
EP (1) EP0260403B1 (fr)
KR (1) KR880004288A (fr)
DE (2) DE3631886A1 (fr)
ES (1) ES2022219B3 (fr)
IN (1) IN170068B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4038813A1 (de) * 1990-12-05 1992-06-11 Siemens Ag Kesselanordnung
DE19511265A1 (de) * 1995-03-27 1996-10-02 Siemens Ag Gitterförmiger Abstandshalter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5388638A (en) * 1993-12-28 1995-02-14 Phillips Petroleum Company Rod baffle heat exchanger
US5527865A (en) * 1995-03-24 1996-06-18 The University Of North Carolina At Chapel Hill Multi-phase polymerization process

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575236A (en) * 1969-08-13 1971-04-20 Combustion Eng Formed plate tube spacer structure
DE2262621C3 (de) * 1972-12-21 1982-11-11 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Abstandshalter für die Rohre eines ein Rohrbündel aus geraden oder U-förmig gebogenen Rohren aufweisenden Röhrenapparates, insbesondere Dampferzeugers, und Verfahren zu dessen Berohrung
DE2316133C2 (de) * 1973-03-30 1983-11-17 Siemens AG, 1000 Berlin und 8000 München Rohrbündelwärmetauscher
IT1038778B (it) * 1975-06-09 1979-11-30 Breda Termomeccanica Spa Methodo per fabricare una griglia costituita da due materiali diversie capace di essere inizialmente rigida mentre dopo la messa in eser cizio permette dilatazioni termiche differenziali
IT1065374B (it) * 1976-12-21 1985-02-25 Breda Termomeccanica Spa Griglia di supporto per fasci tubieri e suo montaggio in un generatore di vapore o simile
IT1096096B (it) * 1978-05-17 1985-08-17 Soligno Vincenzo Guida-sopporto del tipo a griglia per tubi per generatori di vapori
US4570883A (en) * 1983-04-29 1986-02-18 Westinghouse Electric Corp. Tube support grid

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4038813A1 (de) * 1990-12-05 1992-06-11 Siemens Ag Kesselanordnung
DE4038813C2 (de) * 1990-12-05 1998-01-29 Siemens Ag Kesselanordnung
DE19511265A1 (de) * 1995-03-27 1996-10-02 Siemens Ag Gitterförmiger Abstandshalter

Also Published As

Publication number Publication date
US4784220A (en) 1988-11-15
DE3631886A1 (de) 1988-03-31
IN170068B (fr) 1992-02-01
EP0260403A1 (fr) 1988-03-23
ES2022219B3 (es) 1991-12-01
DE3770090D1 (de) 1991-06-20
KR880004288A (ko) 1988-06-03

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