EP0922510A1 - Méthode et appareil pour le formage d'un tube dans une plaque de tubes - Google Patents

Méthode et appareil pour le formage d'un tube dans une plaque de tubes Download PDF

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Publication number
EP0922510A1
EP0922510A1 EP97810965A EP97810965A EP0922510A1 EP 0922510 A1 EP0922510 A1 EP 0922510A1 EP 97810965 A EP97810965 A EP 97810965A EP 97810965 A EP97810965 A EP 97810965A EP 0922510 A1 EP0922510 A1 EP 0922510A1
Authority
EP
European Patent Office
Prior art keywords
tube
pipe
hydraulic
mandrel
rounded
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.)
Granted
Application number
EP97810965A
Other languages
German (de)
English (en)
Other versions
EP0922510B1 (fr
Inventor
Francisco Dr. Blangetti
Harald Fuchs
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.)
General Electric Switzerland GmbH
Original Assignee
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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 ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Priority to DE59704471T priority Critical patent/DE59704471D1/de
Priority to EP97810965A priority patent/EP0922510B1/fr
Priority to JP10347375A priority patent/JPH11244964A/ja
Priority to US09/206,321 priority patent/US5992198A/en
Publication of EP0922510A1 publication Critical patent/EP0922510A1/fr
Application granted granted Critical
Publication of EP0922510B1 publication Critical patent/EP0922510B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders
    • B21D39/20—Tube expanders with mandrels, e.g. expandable
    • B21D39/203—Tube expanders with mandrels, e.g. expandable expandable by fluid or elastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49364—Tube joined to flat sheet longitudinally, i.e., tube sheet
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49373—Tube joint and tube plate structure

Definitions

  • the invention relates to a method and a device for producing pipes a heat exchanger, in particular a preheater in a power plant, wherein the pipes are rolled hydraulically into a tube sheet and a rounded one Pipe inlet are formed.
  • the hydraulic Rolling method as used, for example, by Teco tube expanders company in Wuppertal, DE is used instead of the mechanical expansion hydraulic expansion of the pipe. This allows, regardless of Pipe material, a problem-free expansion and the attachment of the pipe over the entire tube sheet depth, reducing the resulting strength of the connection is increased. Furthermore, the hydraulic expansion allows for the entire Tube sheet depth the use of thinner and less expensive tube sheets, as the tube wall thickness as a load-bearing part in such an expansion Tube sheet can be taken into account.
  • inserts are trumpet-shaped structures which are fixed to the pipe inlet by pipe widening and protrude slightly beyond the surface of the pipe base.
  • the trumpet shape of the inlet piece of the tube is also known under the term "bellmouth inlet”.
  • the round shape of the inserts favors the flow inlet by reducing the radial velocity gradients at the transition from the water chamber to the pipe and the shear forces on the inner wall of the pipe.
  • the resistance values of the flow inlet in such a pipe inlet are discussed, for example, in IE Idelchick, Handbook of Hydraulic Resistance, p. 126, 2nd edition, Springer Verlag (1986).
  • a low resistance value on the one hand reduces the inlet pressure loss, on the other hand protects the oxide layer of the pipe and generally reduces the erosion and corrosion of the pipe.
  • the pipe inlet pieces are each made of erosion and corrosion resistant materials.
  • the inserts also have the advantage that they protrude a multiple of the tube outer diameter over the tube plate surface and a "water cushion" is formed in the area of the inlet field, which greatly reduces erosion of the tube plate.
  • This object is achieved according to the invention by a hydraulic rolling process for tubes in tube sheets of a heat exchanger, in which the hydraulic expansion of the tubes and the formation of tube inlet pieces from the tubes themselves are combined in a single operation.
  • the tubes of a heat exchanger are first passed through the bores of a tube sheet and cut off at the end of the influence with an excess length which is a multiple of the outside diameter of a tube.
  • the mandrel of a hydraulic expansion machine is then inserted into the entire depth of the tube sheet for the purpose of hydraulic expansion of a tube.
  • the pipe is expanded by applying hydraulic pressure until it adheres to the entire inner wall of the bore.
  • the pipe end, the crimping head of the pipe is pressed hydraulically in the direction of the pipe bottom until the pipe end reaches a predetermined rounded shape.
  • a first advantage of the procedure lies in the fact that the expansion as well as the education of the inlet piece in a short working time and therefore carried out inexpensively becomes.
  • the time required for the entire process is only 8-10 seconds, which is due to the fact that the process is purely hydraulic with no further Pieces of material is carried out and a milling back of the pipe ends as well There is no need to insert and fasten separate inserts.
  • a second advantage lies in the use of the same pipe for the manufacture of the pipe inlet piece. On the one hand, no additional, prefabricated pipe inlet piece is necessary, on the other hand there is no seam and therefore no flow stumbling point which should be carefully rounded off. By completely avoiding one The interface between the pipe inlet piece and the pipe is the risk of cracking cracks and resulting corrosion also avoided.
  • the device for performing the method consists of a device for hydraulic expansion of a pipe with a mandrel, which is in the pipe is introduced and the one sealable pressure chamber and several channels for Filling a pressure fluid has.
  • the device has a further shaping device, which is set back somewhat from the mandrel end and is arranged outside the pipe end and externally the rounded to be formed Has shape of the pipe inlet piece.
  • the molding device in turn contains one sealable pressure chamber with a filling channel for the hydraulic fluid which moves the molding device and the tube end into the predetermined shape is pressed.
  • the method for manufacturing the tube in a tube sheet is described using the following device.
  • 1 shows a tube sheet 1 with a bore 2 into which a tube 3 is guided.
  • the device for manufacturing the tube 3 has a mandrel 4 with a central filling channel 5, which leads from a liquid container (not shown), and three side channels 6 for the hydraulic liquid.
  • the central side channel 6 leads from the central channel 5 into a narrow cavity 7, which is delimited by the mandrel 4 and the inner wall of the tube 3.
  • the two outer channels 6 each lead to an O-ring 8, which seals the cavity 7 between the mandrel 4 and the inner tube wall 9.
  • a shaping device 11 is arranged on the mandrel 4, which slides on the mandrel 4.
  • a channel 13 leads from a liquid container (not shown) to a cavity 14 for the hydraulic liquid.
  • the cavity 13 is in turn sealed airtight by O-rings 15 and a surrounding housing 16.
  • the mandrel 4 also has a stop 17 which limits the free movement of the shaping device 11 in the direction of the tube sheet 1.
  • a return spring 18 is arranged between a further stop 19 and the O-rings 15 and determines the rest position of the molding device 11 in its relaxed state.
  • the tube 3 is first passed through the bore 2 to such an extent that a piece of tube projects beyond the surface 20 of the tube sheet 1.
  • the tube is then cut to an excess length of two to four times the outer tube diameter.
  • the mandrel 4 of the expansion device is inserted into the entire depth of the tube sheet 1.
  • the cavities of the system are filled with liquid and pressurized, that is to say the central channel 5, the three side channels 6 and the cavity 7, which is delimited by the mandrel 4, the O-rings 8 and the inner tube wall becomes.
  • the O-rings 8 are spread so that they close the cavity 7 airtight.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP97810965A 1997-12-10 1997-12-10 Méthode et appareil pour le formage d'un tube dans une plaque de tubes Expired - Lifetime EP0922510B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59704471T DE59704471D1 (de) 1997-12-10 1997-12-10 Verfahren und Vorrichtung zur Fertigung eines Rohres in einem Rohrboden
EP97810965A EP0922510B1 (fr) 1997-12-10 1997-12-10 Méthode et appareil pour le formage d'un tube dans une plaque de tubes
JP10347375A JPH11244964A (ja) 1997-12-10 1998-12-07 管板内で管を製作するための方法と装置
US09/206,321 US5992198A (en) 1997-12-10 1998-12-07 Method and device for producing a tube in a tube plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97810965A EP0922510B1 (fr) 1997-12-10 1997-12-10 Méthode et appareil pour le formage d'un tube dans une plaque de tubes

Publications (2)

Publication Number Publication Date
EP0922510A1 true EP0922510A1 (fr) 1999-06-16
EP0922510B1 EP0922510B1 (fr) 2001-08-29

Family

ID=8230515

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97810965A Expired - Lifetime EP0922510B1 (fr) 1997-12-10 1997-12-10 Méthode et appareil pour le formage d'un tube dans une plaque de tubes

Country Status (4)

Country Link
US (1) US5992198A (fr)
EP (1) EP0922510B1 (fr)
JP (1) JPH11244964A (fr)
DE (1) DE59704471D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102672038A (zh) * 2012-03-23 2012-09-19 枣庄福源印染机械有限公司 圆柱管翻边模具
FR3069614A1 (fr) * 2017-07-28 2019-02-01 Autotube Aktiebolag Tuyau a paroi mince et fabrication associee
CN109482752A (zh) * 2018-11-27 2019-03-19 保隆(安徽)汽车配件有限公司 一种管件成型切断装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1068033B1 (fr) * 1998-03-31 2002-06-12 Industria Scambiatori Calore S.P.A. Procede permettant de realiser une connexion etanche aux fluides entre un tube et une partie en forme de plaque
GB2376431A (en) * 2001-06-16 2002-12-18 Seco Aluminium Ltd Manufacture of aluminium based heat transfer panels
US8839846B2 (en) * 2003-12-05 2014-09-23 Westinghouse Air Brake Technologies Corporation Mechanical joint for CuZnFe alloy heat exchanger and method
CN103286178B (zh) * 2013-04-25 2016-01-13 芜湖众力底盘系统有限公司 一种套管快速翻边的方法
CN107262616A (zh) * 2017-07-13 2017-10-20 东方电气(广州)重型机器有限公司 核电站热交换器上焊制换热管与管板只胀不焊的连接工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1527073A (fr) * 1967-04-14 1968-05-31 Dudgeon flexible dilatable
US4761981A (en) * 1987-03-23 1988-08-09 Haskel, Inc. Swaging apparatus for flaring and anchoring tubes
JPH07124671A (ja) * 1993-11-09 1995-05-16 Hitachi Ltd 熱交換器用液圧拡管装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1141239A (en) * 1967-03-16 1969-01-29 Charles B Maretzo Insert constructions for tubes of heat exchangers and condensers
CH592840A5 (fr) * 1975-12-08 1977-11-15 Bbc Brown Boveri & Cie
US4387507A (en) * 1981-04-20 1983-06-14 Haskel Engineering & Supply Co. Method and apparatus for radially expanding tubes
US4502308A (en) * 1982-01-22 1985-03-05 Haskel, Inc. Swaging apparatus having elastically deformable members with segmented supports
US4802273A (en) * 1985-07-18 1989-02-07 Cockerill Mechanical Industries Hydraulic expansion tool for tubular element
US4694677A (en) * 1986-02-24 1987-09-22 Foster Wheeler Energy Corporation Elongated tube expander tool
US4967468A (en) * 1986-10-27 1990-11-06 Torque And Tension Equipment Inc. Apparatus for fixing boiler tubes during replacement of same
US5062199A (en) * 1990-01-11 1991-11-05 Haskel, Inc. Apparatus for radially expanding and anchoring sleeves within tubes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1527073A (fr) * 1967-04-14 1968-05-31 Dudgeon flexible dilatable
US4761981A (en) * 1987-03-23 1988-08-09 Haskel, Inc. Swaging apparatus for flaring and anchoring tubes
JPH07124671A (ja) * 1993-11-09 1995-05-16 Hitachi Ltd 熱交換器用液圧拡管装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 095, no. 008 29 September 1995 (1995-09-29) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102672038A (zh) * 2012-03-23 2012-09-19 枣庄福源印染机械有限公司 圆柱管翻边模具
CN102672038B (zh) * 2012-03-23 2014-12-10 枣庄福源印染机械有限公司 圆柱管翻边模具
FR3069614A1 (fr) * 2017-07-28 2019-02-01 Autotube Aktiebolag Tuyau a paroi mince et fabrication associee
US10738915B2 (en) 2017-07-28 2020-08-11 Akwel Sweden Ab Thin wall pipe and manufacturing process
CN109482752A (zh) * 2018-11-27 2019-03-19 保隆(安徽)汽车配件有限公司 一种管件成型切断装置

Also Published As

Publication number Publication date
DE59704471D1 (de) 2001-10-04
EP0922510B1 (fr) 2001-08-29
JPH11244964A (ja) 1999-09-14
US5992198A (en) 1999-11-30

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