DE3625920A1 - Tube plate (sheet) for heat exchangers, and method for producing it - Google Patents

Tube plate (sheet) for heat exchangers, and method for producing it

Info

Publication number
DE3625920A1
DE3625920A1 DE19863625920 DE3625920A DE3625920A1 DE 3625920 A1 DE3625920 A1 DE 3625920A1 DE 19863625920 DE19863625920 DE 19863625920 DE 3625920 A DE3625920 A DE 3625920A DE 3625920 A1 DE3625920 A1 DE 3625920A1
Authority
DE
Germany
Prior art keywords
tube
tube sheet
welded
forged
tubed
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Withdrawn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
DE19863625920
Other languages
German (de)
Inventor
Karl Dr Ing Million
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
Priority to DE19863625920 priority Critical patent/DE3625920A1/en
Publication of DE3625920A1 publication Critical patent/DE3625920A1/en
Withdrawn legal-status Critical Current

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/04—Welding for other purposes than joining, e.g. built-up welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/14—Heat exchangers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

In a tube plate for heat exchangers having a highly stressed pressure-conducting enclosure made from rolled, forged or form-welded semifinished products, the region (1) of the material of the tube plate (5) which is not tubed and is situated in an extension of the pressure-conducting enclosure of the heat exchanger consists over its entire thickness of form-welded material (4) having high viscosity characteristics, and only the tubed region (2) consists of conventionally rolled, forged or cast materials with lower viscosity characteristics. The region (1) consisting of form-welded material (4) is produced by deposit-welding, which has a forming effect, at one, or simultaneously at a plurality of tubed regions (2) of the tube plate. For this purpose, there are welded onto the tubed regions (2) auxiliary parts (3) which are made from sheet steel and to which form-welded material (4) is subsequently applied. The tube plates (5) combined from two materials are mechanically prepared thereafter. <IMAGE>

Description

Die Erfindung betrifft einen Rohrboden für Wärmetauscher und ein Verfahren zu seiner Herstellung.The invention relates to a tube sheet for heat exchangers and a process for its manufacture.

Rohrböden für Wärmetauscher werden nach dem Stand der Technik in der Regel geschmiedet. Die druckführende Umschließung, d. h. der Druckmantel des Wärmetauschers, kann aus gewalzten, geschmiedeten oder formgeschweißten Halbzeugen gefertigt sein. Die Rohrböden werden mit der Ummantelung durch Schweißung verbunden.Tube plates for heat exchangers are manufactured according to the state of the Technology usually forged. The pressure leading Enclosure, d. H. the pressure jacket of the heat exchanger, can be made from rolled, forged or welded Semi-finished products to be made. The tube sheets are with the Jacket connected by welding.

Nachteilig ist bei der Ausführung des Rohrbodens nach dem Stand der Technik, daß mit zunehmenden Abmessungen - vor allem hinsichtlich der Rohrbodendicke - die Zähig­ keitseigenschaften, die für die Belastbarkeit maßgebend sind, eingeschränkt werden.A disadvantage is the design of the tube sheet the state of the art that with increasing dimensions - especially with regard to the tube sheet thickness - the tough properties that determine resilience are restricted.

Aufgabe der Erfindung ist es, einen für die Verwendung insbesondere bei Dampferzeugern für KKW-Primärkompo­ nenten geeigneten Rohrboden zu schaffen, der es ermög­ licht, den zur druckführenden Umschließung des Wärme­ tauschers gehörenden Bereich, unabhängig von Werkstück­ größe und Werkstückdicke, aus hochzähem, formgeschweißtem Werkstoff herzustellen.The object of the invention is one for use especially for steam generators for NPP primary compo nenten to create a suitable tube sheet that made it possible light, which is used to enclose the heat under pressure area belonging to the exchanger, regardless of the workpiece size and workpiece thickness, made of tough, form-welded To manufacture material.

Diese Aufgabe wird in der in den Patentansprüchen angegebenen Weise gelöst.This task is described in the claims specified way solved.

Der aus zwei Werkstoffen kombinierte Rohrboden weist somit im Bereich der druckführenden Umschließung höhere Zähigkeitseigenschaften auf als der zum Berohrungsbereich gehörige Werkstoff.The tube sheet combined from two materials shows thus higher in the area of the pressurized enclosure Toughness properties than that of the pipe area proper material.

Das Verfahren zur Herstellung eines derartigen kombi­ nierten Rohrbodens ist einfach und erlaubt außerdem, in einem Arbeitsgang mehrere Rohrböden herzustellen.The process for producing such a combi ned tube sheet is simple and also allows in  to produce several tube sheets in one operation.

Die Erfindung wird nachstehend anhand der Zeichnung näher erläutert. Es zeigtThe invention is described below with reference to the drawing explained in more detail. It shows

Fig. 1 einen Querschnitt durch den Rohrboden eines Wärme­ tauschers und Fig. 1 shows a cross section through the tube sheet of a heat exchanger and

Fig. 2 in einem Schnitt den Gang der Herstellung von gleichzeitig vier Rohrböden. Fig. 2 in a section the course of the production of four tube sheets at the same time.

Der Rohrboden (5) gemäß Fig. 1 besteht aus dem drucktra­ genden Anschlußbereich (1), der aus Formschweißgut her­ gestellt ist. Dieser Bereich (1) kann um die Bereiche (1′) und (1′′) verlängert werden, um die Prüfbarkeit der anschließenden Schweißnähte (6) zu verbessern.The tube sheet ( 5 ) according to FIG. 1 consists of the Drucktra ing connection area ( 1 ), which is made of weld metal ago. This area ( 1 ) can be extended by the areas ( 1 ' ) and ( 1'' ) in order to improve the testability of the subsequent weld seams ( 6 ).

Mit (2) ist der Berohrungsbereich des Rohrbodens (5) bezeichnet, der aus herkömmlichen gewalzten, geschmie­ deten oder gegossenem Werkstoff besteht.With ( 2 ) the tube area of the tube sheet ( 5 ) is referred to, which consists of conventional rolled, forged or cast material.

Der in Fig. 2 schraffiert gekennzeichnete Berohrungs­ bereich (2) der Rohrböden (5) besteht aus Knet- oder Gußwerkstoff. Im Ausführungsbeispiel sind die Beroh­ rungsbereiche (2) durch angeschweißte Stahlbleche, die als Hilfsteile (3) dienen, untereinander verbunden. Der drucktragende Anschlußbereich (1) wird durch formgebende Auftragschweißung auf die Berohrungs­ bereiche (2) aufgebracht.The hatched area ( 2 ) in FIG. 2 of the tube sheets ( 5 ) consists of kneading or casting material. In the embodiment, the Beroh approximately areas ( 2 ) by welded steel sheets, which serve as auxiliary parts ( 3 ), interconnected. The pressure-bearing connection area ( 1 ) is applied to the pipe areas ( 2 ) by shaping build-up welding.

Anschließend werden die aus zwei Werkstoffen kombi­ nierten Rohrböden (5) in der in der Fig. 2 gestrichelt dargestellten Kontur mechanisch bearbeitet.The tube plates ( 5 ) combined from two materials are then machined in the contour shown in dashed lines in FIG. 2.

Claims (3)

1. Rohrboden für Wärmetauscher mit hochbeanspruchter druckführender Umschließung aus gewalzten, geschmiedeten oder formgeschweißten Halbzeugen, dadurch gekennzeichnet, daß der nicht berohrte und in Verlängerung zur druckführenden Umschließung des Wärmetauschers liegende Werkstoffbereich (1) des Rohrbodens (5) auf seiner gesamten Dicke aus Formschweißgut (4) mit hohen Zähigkeitseigenschaften und nur der Berohrungsbereich (2) des Rohrbodens (5) aus herkömmlichen gewalzten, geschmiedeten oder gegossenen Werkstoffen mit niedrigeren Zähigkeits­ eigenschaften besteht.1. tube sheet for heat exchangers with highly stressed pressure-carrying enclosure made of rolled, forged or shape-welded semi-finished products, characterized in that the non-tubular and in extension to the pressure-containing enclosure of the heat exchanger material area ( 1 ) of the tube sheet ( 5 ) over its entire thickness from welded metal ( 4 ) with high toughness properties and only the tube area ( 2 ) of the tube sheet ( 5 ) consists of conventional rolled, forged or cast materials with lower toughness properties. 2. Rohrboden nach Anspruch 1, dadurch gekennzeichnet, daß der aus Formschweißgut bestehende Bereich (1) des Rohrbodens (5) in Verlängerung (1′, 1′′) zur druckführenden Umschließung nach Maßgaben der zerstörungsfreien Prüfbarkeit der Anschlußschweiß­ nähte (6) ebenfalls aus Formschweißgut (4) besteht.2. Pipe base according to claim 1, characterized in that the area consisting of weld metal ( 1 ) of the tube sheet ( 5 ) in extension ( 1 ', 1'' ) for pressurized enclosure according to the requirements of the non-destructive testability of the connection weld ( 6 ) also from Form weld metal ( 4 ). 3. Rohrboden nach den Ansprüchen 1 oder 2 und Verfahren zu seiner Herstellung, dadurch gekennzeichnet, daß die Herstellung des aus Formschweißgut (4) bestehenden Bereiches (1) an einem bzw. gleichzeitig an mehreren Rohrbodenberohrungsbereichen (2) in der Weise erfolgt, daß an die Berohrungsbereiche (1) Hilfsteile (3) angeschweißt werden, auf die anschlie­ ßend das Formschweißgut (4) durch Viellagenauftrag­ schweißung aufgebracht wird, und die somit aus zwei Werkstoffen kombinierten Rohrböden im Anschluß daran mechanisch ausgearbeitet werden.3. tube sheet according to claims 1 or 2 and method for its production, characterized in that the production of the weld metal ( 4 ) existing area ( 1 ) on one or at the same time on several tube sheet bore areas ( 2 ) in such a way that the tube areas ( 1 ) auxiliary parts ( 3 ) are welded, to which the weld metal ( 4 ) is then applied by multi-layer welding, and the tube sheets combined from two materials are then mechanically worked out.
DE19863625920 1986-07-31 1986-07-31 Tube plate (sheet) for heat exchangers, and method for producing it Withdrawn DE3625920A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19863625920 DE3625920A1 (en) 1986-07-31 1986-07-31 Tube plate (sheet) for heat exchangers, and method for producing it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863625920 DE3625920A1 (en) 1986-07-31 1986-07-31 Tube plate (sheet) for heat exchangers, and method for producing it

Publications (1)

Publication Number Publication Date
DE3625920A1 true DE3625920A1 (en) 1988-02-04

Family

ID=6306391

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863625920 Withdrawn DE3625920A1 (en) 1986-07-31 1986-07-31 Tube plate (sheet) for heat exchangers, and method for producing it

Country Status (1)

Country Link
DE (1) DE3625920A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT220815B (en) * 1957-03-29 1962-04-25 Du Pont Process for improving the thermal stability of perfluorocarbon polymers
DE2224841A1 (en) * 1971-05-26 1972-12-07 Atomic Energy Authority Uk Heat exchanger
DE2452598A1 (en) * 1974-11-06 1976-05-13 Steinmueller Gmbh L & C Welding pipes to plates for heat-exchangers - or pressure vessels etc., using centering bush in the welded joint
AT336982B (en) * 1975-04-24 1977-06-10 Simmering Graz Pauker Ag PROCESS AND SUPPORT RINGS FOR WELDING PIPES INTO PIPE PLATES
DE2617399A1 (en) * 1976-04-21 1977-11-10 Linde Ag Heat-exchanger, esp. for cryogenic or uranium processes - has integrated tube coil assemblies with tube plates separate from casing
DE2717558A1 (en) * 1976-04-29 1977-11-10 Stork Koninklijke Maschf METHOD AND DEVICE FOR FASTENING A PIPE IN A PIPE BOTTOM
AT351064B (en) * 1976-09-23 1979-07-10 Deggendorfer Werft Eisenbau PIPE FLOOR CONNECTION FOR RESERVOIR WITH A PIPE BUNDLE

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT220815B (en) * 1957-03-29 1962-04-25 Du Pont Process for improving the thermal stability of perfluorocarbon polymers
DE2224841A1 (en) * 1971-05-26 1972-12-07 Atomic Energy Authority Uk Heat exchanger
DE2452598A1 (en) * 1974-11-06 1976-05-13 Steinmueller Gmbh L & C Welding pipes to plates for heat-exchangers - or pressure vessels etc., using centering bush in the welded joint
AT336982B (en) * 1975-04-24 1977-06-10 Simmering Graz Pauker Ag PROCESS AND SUPPORT RINGS FOR WELDING PIPES INTO PIPE PLATES
DE2617399A1 (en) * 1976-04-21 1977-11-10 Linde Ag Heat-exchanger, esp. for cryogenic or uranium processes - has integrated tube coil assemblies with tube plates separate from casing
DE2717558A1 (en) * 1976-04-29 1977-11-10 Stork Koninklijke Maschf METHOD AND DEVICE FOR FASTENING A PIPE IN A PIPE BOTTOM
AT351064B (en) * 1976-09-23 1979-07-10 Deggendorfer Werft Eisenbau PIPE FLOOR CONNECTION FOR RESERVOIR WITH A PIPE BUNDLE

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8127 New person/name/address of the applicant

Owner name: MAN GUTEHOFFNUNGSHUETTE AG, 4200 OBERHAUSEN, DE

8130 Withdrawal