CN113369730B - Automatic welding process for heat exchanger tube plate - Google Patents
Automatic welding process for heat exchanger tube plate Download PDFInfo
- Publication number
- CN113369730B CN113369730B CN202110489684.6A CN202110489684A CN113369730B CN 113369730 B CN113369730 B CN 113369730B CN 202110489684 A CN202110489684 A CN 202110489684A CN 113369730 B CN113369730 B CN 113369730B
- Authority
- CN
- China
- Prior art keywords
- welding
- tube plate
- heat exchange
- tube
- limiting block
- 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.)
- Active
Links
- 238000003466 welding Methods 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000005498 polishing Methods 0.000 claims abstract description 4
- 239000004519 grease Substances 0.000 claims abstract description 3
- 244000261422 Lysimachia clethroides Species 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002184 metal Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
-
- 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
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
-
- 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
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0531—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor internal pipe alignment clamps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides an automatic welding process for a heat exchanger tube plate. Relates to the technical field of heat exchanger manufacture. The welding efficiency is high, and the compactness of the welded seam is high after welding. The method comprises the following steps: s1, polishing and cleaning a tube plate and a heat exchange tube to remove a surface rust layer and a grease layer; s2, inserting a plurality of polished heat exchange tubes into holes of a tube plate, wherein the heat exchange tubes protrude out of the outer wall of the tube plate by 5-10mm, a groove is formed in the outer wall of the tube plate, a limiting block is welded on the outer wall of the heat exchange tubes, and the limiting block is positioned in the groove; s3, performing trial welding by using a tube plate welding machine, and adjusting parameters of the tube plate welding machine to perform final welding after the trial welding is finished. The tube plate and the limiting block are made of the same material, and the joint of the heat exchange tube and the limiting block is subjected to trial welding through a tube plate welding machine.
Description
Technical Field
The invention relates to the technical field of heat exchanger manufacturing, in particular to an automatic welding process for a heat exchanger tube plate.
Background
In chemical equipment, a shell and tube heat exchanger is an important device, and the welded joint of a tube plate and a heat exchange tube is the most important and most easily invalid welded joint in the device, so that the quality of the welded joint directly influences the service life of the device and the stability of the device. At present, the heat exchange tube and the tube plate of the heat exchanger are generally welded manually, the process flow is too simple, the efficiency is low, the compactness of the welding line is poor, and the leakage probability is high; welding robots are also used for welding, which increases the production costs of the enterprise, although the welding efficiency is improved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the automatic welding process for the heat exchanger tube plate, which has high welding efficiency and high compactness of welded seams.
The invention is realized by adopting the following technical scheme: the automatic welding process of the heat exchanger tube plate comprises the following steps:
s1, polishing and cleaning a tube plate and a heat exchange tube to remove a surface rust layer and a grease layer;
s2, inserting a plurality of polished heat exchange tubes into holes of a tube plate, wherein the heat exchange tubes protrude out of the outer wall of the tube plate by 5-10mm, a groove is formed in the outer wall of the tube plate, a limiting block is welded on the outer wall of the heat exchange tubes, and the limiting block is positioned in the groove;
s3, performing trial welding by using a tube plate welding machine, and adjusting parameters of the tube plate welding machine to perform final welding after the trial welding is finished.
The tube plate and the limiting block are made of the same material, and the joint of the heat exchange tube and the limiting block is subjected to trial welding through a tube plate welding machine.
The tube plate welding machine comprises positioning columns, a rotating shaft and welding guns, wherein the rotating shaft is inserted into the heat exchange tube, at least three positioning columns are in contact with the surface of the tube plate, and the welding guns rotate around the rotating shaft;
the rotating shaft is provided with an expansion sleeve, and the expansion sleeve is blocked in the heat exchange tube.
The bottom of the groove protrudes towards the heat exchange tube.
The locating column comprises a column body, a pointed cone portion and a driving portion which is arranged between the column body and the pointed cone portion and used for driving the pointed cone portion to rotate, the driving portion comprises a shell, a motor and a bearing, one side of the shell is fixedly connected with the column body, a perforation is formed in the other side of the shell, the bearing is adaptively clamped in the perforation, the pointed cone portion is arranged in the bearing in a penetrating mode, and the motor is fixedly arranged in the shell and used for driving the pointed cone portion to rotate.
The outer wall of the cylinder is also provided with a gooseneck, a gas pipe is arranged in the gooseneck in a penetrating way, and the gas pipe conveys nitrogen towards the head of the welding gun.
Compared with the prior art, the invention has high automation degree by welding through the tube plate welding machine, ensures low cost and effectively improves the welding efficiency; further, after welding is completed, the limiting block is buried in the welding seam, so that the connection strength of the welding seam metal and the heat exchange tube is improved, the loosening of the welding seam and water leakage caused by vibration of the heat exchange tube are avoided, and the welding compactness is high.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural view of a tube sheet welder;
FIG. 3 is a schematic view of a positioning column;
in the figure: 1. a heat exchange tube; 2. a tube sheet; 20. a groove; 3. a limiting block; 4. positioning columns; 41. a column; 42. a pointed cone; 43. a housing; 44. a motor; 45. a bearing; 5. a rotating shaft; 6. a welding gun; 7. an expansion sleeve; 8. gooseneck.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
As shown in fig. 1, the automatic welding process of the heat exchanger tube plate comprises the following steps:
s1, polishing and cleaning a pipe plate 2 and a heat exchange pipe 1 to remove a surface rust layer and an oil layer; the welding surface is ensured to be clean, and the welding reliability is ensured.
S2, inserting a plurality of polished heat exchange tubes 1 into holes of a tube plate 2, wherein the heat exchange tubes 1 protrude out of the outer wall of the tube plate 2 by 5-10mm, a groove 20 is formed in the outer wall of the tube plate 2, the bottom of the groove 20 protrudes towards the heat exchange tubes 1, a limiting block 3 is welded on the outer wall of the heat exchange tubes 1, and the limiting block 3 is positioned in the groove 20;
s3, performing trial welding by using a tube plate 2 welding machine, and adjusting parameters of the tube plate 2 welding machine to perform final welding after the trial welding is finished. The tube plate 2 welding machine is used for welding, so that the automation degree is high, the low cost is ensured, and the welding efficiency is effectively improved; furthermore, after the welding is finished, the limiting block 3 is buried in the welding seam, so that the connection strength of the welding seam metal and the heat exchange tube 1 is improved, and the problem that the welding seam loosens and water leakage is caused by vibration of the heat exchange tube 1 is avoided.
The tube plate 2 and the limiting block 3 are made of the same material, and the joint of the heat exchange tube 1 and the limiting block 3 is subjected to trial welding through a tube plate 2 welding machine. Therefore, the welding parameters are convenient to adjust by trial welding on the limiting block 3, and the welding seams generated by trial welding do not need to be removed under the condition that the welding parameters deviate greatly, so that the final welding after parameter adjustment can be directly carried out.
As shown in fig. 2, the welding machine for the tube plate 2 comprises a positioning column 4, a rotating shaft 5 and welding guns 6, wherein the rotating shaft 5 is inserted into the heat exchange tube 1, at least three positioning columns 4 are propped against the surface of the tube plate 2, and the welding guns 6 rotate around the rotating shaft 5;
the rotating shaft 5 is provided with an expansion sleeve 7, and the expansion sleeve 7 is clamped in the heat exchange tube 1. The rotating shaft 5 is inserted into the heat exchange tube 1, the positioning column 4 is propped against the tube plate 2, the expansion sleeve 7 is tensioned, positioning of the welding gun 6 is reliably achieved, the welding gun 6 is driven to rotate by the motor 44, automatic welding of the tube plate 2 and the heat exchange tube 1 can be achieved, and welding efficiency is high.
The bottom of the groove 20 protrudes towards the heat exchange tube 1. In this way, the molten weld metal is facilitated to flow in the grooves 20 and fill the grooves 20, and the strength of the welded connection is improved.
As shown in fig. 3, the positioning column 4 includes a column 41, a pointed cone 42, and a driving portion disposed between the column 41 and the pointed cone 42 and used for driving the pointed cone 42 to rotate, the driving portion includes a housing 43, a motor 44, and a bearing 45, one side of the housing 43 is fixedly connected with the column 41, a perforation is disposed on the other side of the housing 43, the bearing 45 is adaptively clamped in the perforation, the pointed cone 42 is disposed in the bearing 45 in a penetrating manner, the motor 44 is fixedly disposed in the housing 43, and the motor 44 is used for driving the pointed cone 42 to rotate. After the motor 44 drives the pointed cone 42 to rotate, the pointed cone 42 drills small holes on the surface of the tube plate 2, and then the motor 44 stops, so that the small holes can play a limiting role on the positioning column 4, the positioning column 4 is prevented from being moved in a small range in the welding process, and the welding precision is improved.
The outer wall of the cylinder 41 is also provided with a gooseneck 8, and a gas pipe is arranged in the gooseneck 8 in a penetrating way and is used for conveying nitrogen towards the head of the welding gun 6. The gooseneck 8 can be bent at will and kept in the current state, so that the gas pipe in the gooseneck 8 can be directed to the head of the welding gun 6 under different construction environments, and stable nitrogen atmosphere can be formed at the welding position.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.
Claims (3)
1. The automatic welding process for the heat exchanger tube plate is characterized by comprising the following steps of: the method comprises the following steps:
s1, polishing and cleaning a tube plate and a heat exchange tube to remove a surface rust layer and a grease layer;
s2, inserting a plurality of polished heat exchange tubes into holes of a tube plate, wherein the heat exchange tubes protrude out of the outer wall of the tube plate by 5-10mm, a groove is formed in the outer wall of the tube plate, a limiting block is welded on the outer wall of the heat exchange tubes, and the limiting block is positioned in the groove;
s3, performing trial welding by using a tube plate welding machine, and adjusting parameters of the tube plate welding machine to perform final welding after the trial welding is finished;
the tube plate welding machine comprises positioning columns, a rotating shaft and welding guns, wherein the rotating shaft is inserted into the heat exchange tube, at least three positioning columns are in contact with the surface of the tube plate, and the welding guns rotate around the rotating shaft;
an expansion sleeve is arranged on the rotating shaft and is blocked in the heat exchange tube;
the bottom of the groove protrudes towards the heat exchange tube;
the locating column comprises a column body, a pointed cone portion and a driving portion which is arranged between the column body and the pointed cone portion and used for driving the pointed cone portion to rotate, the driving portion comprises a shell, a motor and a bearing, one side of the shell is fixedly connected with the column body, a perforation is formed in the other side of the shell, the bearing is adaptively clamped in the perforation, the pointed cone portion is arranged in the bearing in a penetrating mode, and the motor is fixedly arranged in the shell and used for driving the pointed cone portion to rotate.
2. The automated heat exchanger tube sheet welding process of claim 1, wherein: the tube plate and the limiting block are made of the same material, and the joint of the heat exchange tube and the limiting block is subjected to trial welding through a tube plate welding machine.
3. The automated heat exchanger tube sheet welding process of claim 1, wherein: the outer wall of the cylinder is also provided with a gooseneck, a gas pipe is arranged in the gooseneck in a penetrating way, and the gas pipe conveys nitrogen towards the head of the welding gun.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110489684.6A CN113369730B (en) | 2021-05-06 | 2021-05-06 | Automatic welding process for heat exchanger tube plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110489684.6A CN113369730B (en) | 2021-05-06 | 2021-05-06 | Automatic welding process for heat exchanger tube plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113369730A CN113369730A (en) | 2021-09-10 |
| CN113369730B true CN113369730B (en) | 2024-01-12 |
Family
ID=77570448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110489684.6A Active CN113369730B (en) | 2021-05-06 | 2021-05-06 | Automatic welding process for heat exchanger tube plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113369730B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896407A (en) * | 2012-10-18 | 2013-01-30 | 扬州万福压力容器有限公司 | Tube sheet welding joint process |
| CN203901822U (en) * | 2014-05-09 | 2014-10-29 | 玛切嘉利（中国）有限责任公司 | Welded pipe with easy-to-weld welding seam |
| CN204018929U (en) * | 2014-07-28 | 2014-12-17 | 向勇 | A kind of overall titanium-steel pipe cold exchange device |
| CN106624263A (en) * | 2017-01-09 | 2017-05-10 | 河海大学常州校区 | Pipe plate joint whole-position automatic welding equipment |
| CN106735998A (en) * | 2017-01-11 | 2017-05-31 | 茂名重力石化装备股份公司 | A kind of embedded deep hole welding structure of waste heat boiler flexible tubesheet |
| CN110238489A (en) * | 2019-06-13 | 2019-09-17 | 鲁西工业装备有限公司 | A kind of production of high-temperature heat-exchanging and welding procedure |
| CN110328434A (en) * | 2019-06-03 | 2019-10-15 | 湖北长江石化设备有限公司 | A kind of cold exchange device tube head welding method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100001044A1 (en) * | 2008-07-07 | 2010-01-07 | Caterpillar Inc. | Full penetration weld joint |
-
2021
- 2021-05-06 CN CN202110489684.6A patent/CN113369730B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896407A (en) * | 2012-10-18 | 2013-01-30 | 扬州万福压力容器有限公司 | Tube sheet welding joint process |
| CN203901822U (en) * | 2014-05-09 | 2014-10-29 | 玛切嘉利（中国）有限责任公司 | Welded pipe with easy-to-weld welding seam |
| CN204018929U (en) * | 2014-07-28 | 2014-12-17 | 向勇 | A kind of overall titanium-steel pipe cold exchange device |
| CN106624263A (en) * | 2017-01-09 | 2017-05-10 | 河海大学常州校区 | Pipe plate joint whole-position automatic welding equipment |
| CN106735998A (en) * | 2017-01-11 | 2017-05-31 | 茂名重力石化装备股份公司 | A kind of embedded deep hole welding structure of waste heat boiler flexible tubesheet |
| CN110328434A (en) * | 2019-06-03 | 2019-10-15 | 湖北长江石化设备有限公司 | A kind of cold exchange device tube head welding method |
| CN110238489A (en) * | 2019-06-13 | 2019-09-17 | 鲁西工业装备有限公司 | A kind of production of high-temperature heat-exchanging and welding procedure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113369730A (en) | 2021-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108971710B (en) | Connecting and processing technology of tube and tube plate | |
| CN102954283B (en) | Corrugated tube welding assembly and production method thereof | |
| CN110238489B (en) | Manufacturing and welding process of high-temperature heat exchanger | |
| CN113369730B (en) | Automatic welding process for heat exchanger tube plate | |
| CN115770950A (en) | Laser welding method for hydrogen production electrode frame polar plate | |
| CN215112050U (en) | Hydraulic steel pipe assembly | |
| CN110722279A (en) | Steel pipe butt welding process | |
| KR20150048962A (en) | pipe brazing apparatus using negative pressure | |
| CN111872872A (en) | Sampling tool for connecting pipe and sampling method thereof | |
| CN111014905A (en) | Mechanical welding method for header close-packed pipe joints | |
| CN212122076U (en) | Petroleum pipeline laser electric arc hybrid welding device | |
| CN112556253A (en) | Assembling method of evaporator liquid storage device | |
| CA2268697A1 (en) | Method of manufacturing long dual layer metal pipe | |
| CN209945112U (en) | Connecting structure of heat exchange tube and tube plate | |
| CN212761827U (en) | Semi-automatic spray gun welding tool | |
| CN101462212B (en) | Brazing liquid-dividing head device | |
| CN112113338B (en) | Water heater inner container processing equipment and water heater inner container | |
| KR101772425B1 (en) | a overlay welding machine for pipe of outer surface | |
| CN111266728A (en) | Stainless steel tube type oil cooler welding process based on laser welding | |
| CN212004217U (en) | Telescopic sleeve hydraulic cylinder piston rod with novel structure | |
| CN110977215A (en) | Cylinder body butt joint back chipping-free weld joint pretreatment process | |
| KR100449561B1 (en) | Teflon coating apparatus for shock absorber piston | |
| CN114932295B (en) | Welding method | |
| CN111390316A (en) | Brazing process and device for shell-and-tube heat exchanger | |
| CN218874192U (en) | Metal collapsible tube automatic weld rotating tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |