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WO2003024660A1 - Procede de fixation de tuyaux - Google Patents

Procede de fixation de tuyaux Download PDF

Info

Publication number
WO2003024660A1
WO2003024660A1 PCT/US2001/028961 US0128961W WO03024660A1 WO 2003024660 A1 WO2003024660 A1 WO 2003024660A1 US 0128961 W US0128961 W US 0128961W WO 03024660 A1 WO03024660 A1 WO 03024660A1
Authority
WO
WIPO (PCT)
Prior art keywords
header
tube
attaching
weld
intersection
Prior art date
Application number
PCT/US2001/028961
Other languages
English (en)
Inventor
Adrian Staruszkiewicz
Original Assignee
Adrian Staruszkiewicz
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 Adrian Staruszkiewicz filed Critical Adrian Staruszkiewicz
Priority to PCT/US2001/028961 priority Critical patent/WO2003024660A1/fr
Publication of WO2003024660A1 publication Critical patent/WO2003024660A1/fr

Links

Classifications

    • 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
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or 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

Definitions

  • This invention relates to pipe structures, and in particular to a method of attaching pipes.
  • HRSG Heat Recovery Steam Generators
  • HRSG 2 comprises a plurality of fmned tubes 6 (in the interest of
  • first header 4 communicates with an interior of first header 4
  • finned tubes 6 An exterior of finned tubes 6 is
  • first header 4 as indicated by arrows 8.
  • second header 5 by means of finned tubes 6. While transiting finned tubes 6 the water is heated, and exits second header 5 as steam, as indicated by arrow 10.
  • FIG. 2 An existing method of attachment of two pipes is illustrated in figure 2.
  • the attachment of a finned tube 6 to second header 5 is illustrated.
  • weld prep 14 is
  • One problem is that automatic welding cannot be employed, because of interference with finned tubes 6 adjacent to the fmned tube 6 being welded.
  • the conventional method described above permits a worker to perform only approximately thirty four (34) welds every twelve hours. Given that automatic welding permits five (5) or
  • Design steps allowing this object to be accomplished include longitudinally dividing a header into two parts, making header bores into one header part, inserting a tube into each header bore, and automatically welding each tube into its respective header bore from the inside of the header part by means of automatic welding.
  • Advantages associated with the accomplishment of this object is time savings, and consequent cost savings.
  • Design steps allowing this object to be accomplished include longitudinally dividing a header into two parts, making header bores into one header part, inserting a tube into each header bore, and attaching each tube to the header part.
  • Benefits associated with the accomplishment of this object include a more thorough inspection, and less sub-specification attachments.
  • a benefit associated with the accomplishment of this object is a stronger, higher quality weld to attach two pipes.
  • Design steps allowing this object to be accomplished include removing a header section from a header, gaining access to an intersection between one or more finned tube and the
  • Sheet one contains figures 1 and 2.
  • Sheet two contains figures 3 and 4.
  • Sheet three contains figures 5 and 6.
  • Sheet four contains figures
  • Sheet five contains figures 10 and 11.
  • Sheet six contains figure 12.
  • Sheet seven contains figures 13 and 14.
  • Sheet eight contains figure 15.
  • Figure 1 is a front isometric view of typical prior art heat recovery steam generator 2.
  • Figure 2 is a front isometric view of a conventional attachment between fmned tube 6 and second header 5.
  • Figure 3 is a front quarter isometric view of header 20 which has been longitudinally cut into header first part 22 and header second part 24, and header longitudinal weld preps 26
  • Figure 4 is an axial cross-sectional view of header first part 22 with header bore 28, and
  • FIG. 5 is an axial cross-sectional view of header first part 22 with an extreme of tube 32 inserted into header bore 28, and pipe to pipe weld 34 at header tube weld prep 30 attaching tube 32 to header first part 22.
  • Figure 6 is an axial cross-sectional view of tube 32 attached to header first part 22, and header longitudinal welds 36 attaching header first part 22 to header second part 24 at header longitudinal weld preps 26.
  • Figure 7 is an axial cross-sectional view of tube 32 attached to header first part 22 by means
  • Figure 8 is an axial cross-sectional view of tube 32 attached to header first part 22 by means of expansions 40 and bead 38.
  • Figure 9 is an axial cross-sectional view of tube 32 attached to header first part 22 by means
  • Figure 10 is a front isometric view of a header from which a header section has been cut, thereby opening a header window.
  • Figure 11 is a top isometric view of a header window showing finned tubes passing through
  • Figure 12 is a top isometric view of the header section being re-attached to the header.
  • Figure 13 is a front isometric view of a header from which an oval header section has been cut, thereby opening an oval header window.
  • Figure 14 is a top isometric view of an oval header window showing finned tubes passing through the wall of the header.
  • Figure 15 is a top isometric view of the oval header section being re-attached to the header.
  • Figures 3 - 9 depict the instant method of attaching pipes.
  • the method is especially useful when attaching a plurality of smaller diameter pipes to a larger diameter pipe, such as attaching the various finned tubes 6 to the headers 4, 5 as depicted in figure 1.
  • the larger diameter pipe in figures 3 - 9 will be referred to as header 20, and the smaller diameter pipe(s) being attached to header 20 will be referred to
  • tube(s) 32 This nomenclature should not be misconstrued to mean the instant method is only applicable to the connection of finned tubes to headers; to the contrary, the instant
  • any method of attachment is envisioned as encompassing any attachment of two pipes, in any art. It is contemplated that any method of attachment may be used, including but not limited to welding, swaging, expanding, beading, any combination thereof, etc.
  • Figure 3 depicts the first step of the instant method of attaching pipes, wherein header 20 is separated longitudinally into header first part 22 and header second part 24. Header first
  • part 22 comprises two header first part cut faces 29, header first part outside surface 21,
  • Header second part 24 comprises two header
  • header second part cut faces 31, header second part outside surface 25, and header second part inside surface 27.
  • header second part 24 is to be a weld
  • a header longitudinal weld prep 26 may be cut into both intersections of header first part outside surface 21 with the corresponding header first part cut face 29, and into both intersections of header second part outside surface 25 with the corresponding header second part cut face 31.
  • header longitudinal welds 36 at longitudinal weld preps 26 may be used to re-attach header first part 22 to header second part 24.
  • header bore(s) 28 is sized to admit one tube 32.
  • header tube weld prep 30 may be simultaneously cut into the intersection of
  • each header bore 28 with header first part inside surface 23 is identical to each header bore 28 with header first part inside surface 23.
  • the third step of the instant method is depicted in figure 5, and comprises the step of inserting one extreme of tube 32 into each header bore 28, and attaching each tube 32 to header first part 22.
  • the method of attachment depicted is by means of pipe to pipe weld 34, as indicated by weld arrow 35. Note that pipe to pipe welds 34 may be
  • the fourth step of the instant method of attaching pipes comprises inspection of the attachment.
  • a major advance inherent in the instant method is the ability to inspect both the attachment at the intersection of header bore 28 with header first part inside surface 23, and the attachment at the intersection of header bore 28 with header first part outside surface 21 (the conventional attachment method only permits inspection of the attachment at the intersection of header bore 28 with header first part outside surface 21).
  • the fifth step of the instant method of attaching pipes comprises the step of juxtapositioning each header first part cut face 29 with a corresponding header second part cut face 31, and re-attaching header first part 22 to header second part 24.
  • Various means of re-attaching header first part 22 and header second part 24 may be employed, such as
  • FIG. 6 depicts one such attachment.
  • header first part 22 has been re-attached
  • header second part 24 by means of header longitudinal weld 36 as indicated by weld
  • Figures 7 - 9 depict some of the many alternate methods of attaching tube 32 to header first part 22.
  • Figure 7 is an axial cross-sectional view of tube 32 attached to header first part 22 by means of expansion 40 and bead 38.
  • Figure 8 is an axial cross-sectional view of tube 32
  • Figure 9 is an axial cross-
  • Figures 10 through 15 depict an alternate embodiment of the instant method which teaches repairing an attachment, or re-attaching, or re-enforcing an existent attachment of, one or more finned tubes 6 to header 20.
  • Figure 10 is a front isometric view of header 20 from which header section 44 has been cut along header cut 42, thereby opening header window 46.
  • Figure 11 is a top isometric view of header window 46 with finned tubes 6 passing through a wall of header 20. The intersections between finned tubes 6 and header 20 may also be observed.
  • Weld arrow 50 depicts one method of repairing header/finned tube leak 48, by welding at an intersection between finned tube 6 and header 20. It is considered to be within the scope of this invention to use any appropriate method of attaching tube(s) 6 to
  • header 20 including but not limited to welding, brazing, soldering, expanding, crimping, adhesives, etc.
  • Weld arrow 52 illustrates another method step which could be accomplished while header
  • window 46 is open: sealing or re-enforcing an attachment between one or more finned
  • any appropriate method of attaching finned tube 6 to header 20 could be employed, including but not limited to welding, brazing, soldering, expanding, crimping, adhesives,
  • header section 44 is re-attached to header 20 at header window 46 as shown in figure 12.
  • Figure 12 illustrates this attachment being made by welding, as depicted by weld arrow 54,
  • Figures 13 - 15 illustrate this alternate embodiment method of repairing an attachment, or re-attaching, or re-enforcing an existent attachment of, one or more finned tubes 6 to header 20.
  • Figure 13 is a front isometric view of a header 20 from which oval header
  • FIG. 14 is a top isometric view of oval header window 58 showing finned tubes 6 passing through the wall of header 20, and the intersections between finned tubes 6 and header 20.
  • Weld arrow 50 depicts one method of repairing header/finned tube leak 48, although as in all attachments disclosed herein, it is contemplated to be within the scope of this disclosure that any
  • Weld arrow 52 depicts one method of re- attaching, or re-enforcing an existent attachment of, one or more finned tubes 6 to header 20.
  • header section 56 is re-attached to header 20 over oval header window 58 as shown in figure 15.
  • Figure 15 illustrates this attachment being made by welding, as depicted by weld
  • header section 44 could be cut out of header 20 in order to gain access to the intersection of finned tubes 6 and header 20, in order to make attachment(s).
  • header section 44 could be rectangular in plan view as depicted in figure 11, an oval header section 56 as depicted in figures 13 - 15, square, round, irregular, or any appropriate shape.
  • header first part outside surface header first part header first part inside surface
  • header second part outside surface header longitudinal weld prep header second part inside surface header bore

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

L'invention concerne un procédé de fixation de tuyaux. Un tuyau collecteur (20) est divisé longitudinalement en deux. Des alésages de collecteur (28) sont réalisés dans une partie de collecteur (22), des tubes (32) sont insérés dans chaque alésage de collecteur (28) et les tubes (32) sont fixés à la première partie de collecteur (22). Selon un procédé, la fixation se fait par soudage automatique depuis l'intérieur de la première partie de collecteur (22). Tant le soudage que le contrôle sont énormément facilités grâce au procédé présenté. Après que le ou les tube(s) (32) a été fixé ou ont été fixés à la première partie de collecteur (22), les fixations sont contrôlées à la fois depuis l'intérieur et depuis l'extérieur de ladite première partie de collecteur (22), et, enfin, les deux parties de collecteur (22, 24) sont refixées mutuellement, cette nouvelle fixation étant alors contrôlée. Un autre mode de réalisation du procédé de fixation de tuyaux comprend les étapes consistant à retirer une partie de collecteur (44) d'un collecteur (20), à accéder à l'intersection entre au moins un tube à ailettes (6) et le collecteur (20), à fixer le ou les tube(s) à ailettes (6) au collecteur (20), et à refixer ladite partie de collecteur (44) au collecteur (20).
PCT/US2001/028961 2001-09-17 2001-09-17 Procede de fixation de tuyaux WO2003024660A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2001/028961 WO2003024660A1 (fr) 2001-09-17 2001-09-17 Procede de fixation de tuyaux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2001/028961 WO2003024660A1 (fr) 2001-09-17 2001-09-17 Procede de fixation de tuyaux

Publications (1)

Publication Number Publication Date
WO2003024660A1 true WO2003024660A1 (fr) 2003-03-27

Family

ID=21742847

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/028961 WO2003024660A1 (fr) 2001-09-17 2001-09-17 Procede de fixation de tuyaux

Country Status (1)

Country Link
WO (1) WO2003024660A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005070602A1 (fr) * 2004-01-23 2005-08-04 Bruno Farelli Procede de soudage par induction d'elements chauffants pour radiateurs en general, et elements chauffants obtenus selon ce procede
WO2010130679A3 (fr) * 2009-05-12 2011-04-21 Titanx Engine Cooling Holding Ab Dispositif de refroidissement par recirculation de gaz d'échappement remis à neuf et procédé de mise en oeuvre d'un dispositif de refroidissement

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4945635A (en) * 1988-07-14 1990-08-07 Showa Alumina Kabushiki Kaisha Method of manufacturing brazable pipes and heat exchanger
US5090477A (en) * 1988-10-11 1992-02-25 Brazeway, Inc. Evaporator having integrally baffled tubes
US5094293A (en) * 1990-02-22 1992-03-10 Sanden Corporation Heat exchanger
US5101887A (en) * 1990-02-22 1992-04-07 Sanden Corporation Heat exchanger
US5251374A (en) * 1992-09-01 1993-10-12 Gary A. Halstead Method for forming heat exchangers
JPH05277714A (ja) * 1993-02-12 1993-10-26 Showa Alum Corp 熱交換器の製造方法
US5265672A (en) * 1991-03-08 1993-11-30 Sanden Corporation Heat exchanger
US5464145A (en) * 1993-03-05 1995-11-07 Doowon Climate Control Co., Ltd. Heat exchanger for automobile air conditioning system and method for manufacture of the same
US5743122A (en) * 1996-03-29 1998-04-28 Rhodes; Eugene E. Apparatus for making a manifold for an automotive heat exchanger

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4945635A (en) * 1988-07-14 1990-08-07 Showa Alumina Kabushiki Kaisha Method of manufacturing brazable pipes and heat exchanger
US5090477A (en) * 1988-10-11 1992-02-25 Brazeway, Inc. Evaporator having integrally baffled tubes
US5094293A (en) * 1990-02-22 1992-03-10 Sanden Corporation Heat exchanger
US5101887A (en) * 1990-02-22 1992-04-07 Sanden Corporation Heat exchanger
US5265672A (en) * 1991-03-08 1993-11-30 Sanden Corporation Heat exchanger
US5251374A (en) * 1992-09-01 1993-10-12 Gary A. Halstead Method for forming heat exchangers
JPH05277714A (ja) * 1993-02-12 1993-10-26 Showa Alum Corp 熱交換器の製造方法
US5464145A (en) * 1993-03-05 1995-11-07 Doowon Climate Control Co., Ltd. Heat exchanger for automobile air conditioning system and method for manufacture of the same
US5743122A (en) * 1996-03-29 1998-04-28 Rhodes; Eugene E. Apparatus for making a manifold for an automotive heat exchanger

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005070602A1 (fr) * 2004-01-23 2005-08-04 Bruno Farelli Procede de soudage par induction d'elements chauffants pour radiateurs en general, et elements chauffants obtenus selon ce procede
WO2010130679A3 (fr) * 2009-05-12 2011-04-21 Titanx Engine Cooling Holding Ab Dispositif de refroidissement par recirculation de gaz d'échappement remis à neuf et procédé de mise en oeuvre d'un dispositif de refroidissement

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