EP3019296A1 - Production of shell-and-tube heat exchangers - Google Patents
Production of shell-and-tube heat exchangersInfo
- Publication number
- EP3019296A1 EP3019296A1 EP14741230.8A EP14741230A EP3019296A1 EP 3019296 A1 EP3019296 A1 EP 3019296A1 EP 14741230 A EP14741230 A EP 14741230A EP 3019296 A1 EP3019296 A1 EP 3019296A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- welding
- torch
- around
- burner
- robot arm
- 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- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000003466 welding Methods 0.000 claims abstract description 96
- 238000000034 method Methods 0.000 claims abstract description 39
- 239000011261 inert gas Substances 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 2
- 206010053567 Coagulopathies Diseases 0.000 description 1
- 230000035602 clotting Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
- B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
- B23K9/0286—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections with an electrode moving around the fixed tube during the welding operation
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/027—Carriages for supporting the welding or cutting element for making circular cuts or welds
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0276—Carriages for supporting the welding or cutting element for working on or in tubes
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0282—Carriages forming part of a welding unit
-
- 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
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/0216—Seam profiling, e.g. weaving, multilayer
-
- 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
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/164—Arc welding or cutting making use of shielding gas making use of a moving fluid
-
- 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
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
- the invention relates to a method for producing tube bundle heat exchangers, consisting of spaced apart and substantially mutually parallel manifold tubes and a plurality of transverse tubes whose ends are welded to prefabricated communication holes of the header tubes or U-shaped pipe bends are connected to each other by means of welding, using as a welding method a metal arc welding with a burner with non-consumable electrode with the addition of welding filler.
- the invention has for its object to simplify the entire Ver ⁇ welding tube heat exchangers and automate.
- this object is achieved in that the welding device is divided into two individual units, namely the burner on the one hand and the welding wire feed on the other hand, that the two individual units are attached to separately êtba ⁇ ren robot arms that the burner by means of his robotic arm in a single operation continuously 360 ° or slightly more is guided around the weld and that the welding wire feed is guided by its robotic arm such that it rotates in a first Ar ⁇ together with the burner by about 180 ° around the weld, then 360 ° to the other side swivels around the burner and finally moves in a second operation, the remaining 180 ° together with the burner.
- the TIG welding process is preferably used.
- the root weld should be carried out according to the TIG welding process, since the TIG welding process, as stated above, is particularly well suited for root welds, since according to this process high
- the cover seam can also be applied by the TIG welding process.
- the welding process preferably begins at the bottom of the respective pipe joint to be produced, wherein the weld is pulled in a clockwise direction from the pointer position "6 o'clock” to "12 o'clock” to "6 o'clock” and possibly a piece beyond.
- the robot arm carrying the welding wire feed then pivots to the other side of the burner approximately at the hand position "12 o'clock.”
- the device according to the invention for carrying out the method is characterized in particular by the fact that the welding device is divided into two individual units, namely on the one hand into the burner and on the other hand in the welding wire feed, - that the two individual units are attached to separate juriba ⁇ ren robot arms, that the burner by means of its robotic arm in a single operation continuously around 360 ° or something more around the weld is feasible and that the welding wire feed by means of its robotic arm is so feasible that they in one operation together with the burner by about 180 ° around the weld can be guided around, then swung around by about 360 ° to the other side of the burner and finally in a second step, together with the burner by 180 ° is exhaustivebewegbar.
- the burner and the inert gas feed are advantageously combined into a single unit, while the Sch geometricdrahtZu ⁇ guide sits separately to a separately controllable second robot arm.
- FIG. 1 shows a schematic representation of the cross section through a collector tube with welded-finned tubes
- Fig. 2 a reduced view of the arrangement according to
- FIG. 3 shows an enlarged view of the two robot arms, the torch being arranged on one robot arm and the welding wire feed on the other robot arm,
- Fig. 6 a first working position of the burner
- Fig. 7 a second position of the burner and the welding ⁇ wire feeder and a third position of the burner and the welding wire feeder after the pivoting of the provided with the welding wire feed robot arm.
- FIGS. 1 and 2 show a first exemplary embodiment of a shell-and-tube heat exchanger 1, in which the method according to the invention can be used.
- a plurality of parallel transverse tubes 3 are arranged between two header tubes 2, which are generally formed as finned tubes.
- the ends 4 of the transverse tubes or finned tubes 3 are welded to holes of the collector tubes 2.
- the exemplary embodiment illustrated in the drawing only one of the collector tubes 2 with the welded-on finned tubes 3 is illustrated.
- Such a shell and tube heat exchanger 1 is referred to in the art as "harp".
- FIG. 3 another embodiment of a Rohrbün- delumbleübertragers 5 is shown, in which the collector tubes 6 angeord ⁇ net on one side of the transverse tubes or finned tubes 7.
- the cross-tubes or finned tubes 7, which are not UNMIT ⁇ telbar connected to the header pipes 6 are, with each other with one another at their ends by U-shaped bends 8 of the joined.
- the U-shaped pipe bends 8 are welded to the cross tubes or finned tubes 7 by means of the method according to the invention.
- Such a tube bundle heat exchanger 5 shown in FIG. 3 is referred to in professional circles as "ECO". designated .
- FIG. 4 shows a robot welding station, to which the U-shaped tube bends 8 are welded to the finned tubes 7 of an "ECO" 5.
- the welding is carried out by a boom 9 movable in the three main directions, on which a welding device 10 is arranged ,
- the welding device 10 operates on the principle of a metal inert gas welding with a burner 11 with non-consumable electrode and a welding wire feed 12.
- the welding device 10 is divided into two individual units, wherein the burner 11 and the welding wire feed 12 are constructed as independently formed Einzelaggre ⁇ gate.
- the two individual units are arranged on separate robot arms 13 and 14, which are separately controllable.
- the burner 11 is arranged on the robot arm 13 and the welding wire feed on the robot arm 14.
- the robot arm 13 provided with the burner 11 also simultaneously supplies the inert gas supply.
- the burner 11 is guided by its robot arm 13 in a single operation continuously by 360 ° or slightly more around the weld. Work is being done at, for example, clockwise from the "6 o'clock” hand position to "12 o'clock” and again to "6 o'clock".
- the robot arm 14 carrying the welding wire feed 12 can not follow the burner 11 in a single operation, so that it follows shortly after the constellation shown in FIG. Lation on the other side of the burner 11 umspringt, as illustrated in Fig. 8.
- two welds are performed one above the other to achieve a highly skilled, absolutely tight and stable weld.
- the initially applied root weld is produced in each case by the TIG welding process.
- the cover seam which is suitably welded pendulum, can also be applied by the TIG welding process but also by the MAG welding process.
- Both the TIG welding process and the MAG welding process can be carried out by the method according to the invention on the robot welding station shown in FIG. 4. Larger conversion work in the welding of different shell-and-tube heat exchangers is not necessary in this case.
- the robot arms 13 and 14 can be controlled in the same or similar manner separately from each other.
- the welding of the finned tubes 3 to the header pipes 2 and also the U-shaped pipe bends 8 to the finned tubes 7 can be done fully automatically, without a welder having to be entrusted with these complicated and difficult welding jobs. If a conversion from TIG welding to MAG welding is to be carried out, the replacement of the welding devices can be carried out directly on the two robot arms 13 and 14. Alternatively, however, it is also possible, in a not shown in the drawing the second boom also has two separately controlled robot arms to install, wherein the one pole for the TIG welding ⁇ Ssung and the other boom is provided for the MAG welding.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013011468 | 2013-07-10 | ||
PCT/EP2014/064477 WO2015004071A1 (en) | 2013-07-10 | 2014-07-07 | Production of shell-and-tube heat exchangers |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3019296A1 true EP3019296A1 (en) | 2016-05-18 |
Family
ID=51211193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14741230.8A Withdrawn EP3019296A1 (en) | 2013-07-10 | 2014-07-07 | Production of shell-and-tube heat exchangers |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3019296A1 (en) |
WO (1) | WO2015004071A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116921975B (en) * | 2023-09-15 | 2023-12-08 | 启东市鸿洋润滑产品有限公司 | Fixing clamp and method for welding shell and tube cooler |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4356372A (en) * | 1979-12-03 | 1982-10-26 | Foster Wheeler Energy Corporation | Sheiled-arc tube welder with intermediate gas supply |
JPH11342473A (en) * | 1998-05-29 | 1999-12-14 | Daihen Corp | Control of tig welding robot |
ATE445475T1 (en) * | 2002-05-13 | 2009-10-15 | Honda Motor Co Ltd | TIG WELDING EQUIPMENT AND TIG WELDING PROCESSES |
US7170032B2 (en) * | 2003-11-20 | 2007-01-30 | Tri Tool Inc. | Process for welding |
DE102008036508B8 (en) * | 2008-08-05 | 2012-12-06 | Rosink Apparate- Und Anlagenbau Gmbh | Welding apparatus and method of operating the apparatus |
GB0921078D0 (en) * | 2009-12-01 | 2010-01-13 | Saipem Spa | Pipeline welding method and apparatus |
-
2014
- 2014-07-07 EP EP14741230.8A patent/EP3019296A1/en not_active Withdrawn
- 2014-07-07 WO PCT/EP2014/064477 patent/WO2015004071A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2015004071A1 (en) | 2015-01-15 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 20151130 |
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Extension state: BA ME |
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DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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INTG | Intention to grant announced |
Effective date: 20161207 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20170419 |