CN103862187A - Welding groove structure for main pipe narrow gap automatic welding - Google Patents
Welding groove structure for main pipe narrow gap automatic welding Download PDFInfo
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- CN103862187A CN103862187A CN201210539089.XA CN201210539089A CN103862187A CN 103862187 A CN103862187 A CN 103862187A CN 201210539089 A CN201210539089 A CN 201210539089A CN 103862187 A CN103862187 A CN 103862187A
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- 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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
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Abstract
The invention relates to the technical field of narrow gap automatic welding in pressurized water reactor nuclear power plants and particularly discloses a welding groove structure for main pipe narrow gap automatic welding. In the groove structure, a first V-shaped groove, a second V-shaped groove and a third V-shaped groove are formed in a main pipe wall or a main device to be welded, wherein, the third V-shaped groove, the second V-shaped groove and the first V-shaped groove are connected sequentially from the top to the bottom, and a three-section V-shaped structure with an opening closing up gradually is formed. The thickness of a truncated edge at the bottom end of the first V-shaped groove with a smallest bottom opening is h0, the truncated edge group gap of the first V-shaped groove is k1, the length of an inner boring hole in the main pipe or the main device is k2, and the inner boring hole and the main pipe inner diameter or the main device inner diameter is transited through an angle of alpha smaller than or equal to 10 degrees. Compared with a traditional manual welding groove, the groove width is smaller, size precision is higher, automatic welding of the main pipe narrow gap is convenient to conduct, a nuclear power plant main pipe field installing welding quality can be improved, and a nuclear island building construction period is shortened.
Description
Technical field
The invention belongs to the narrow gap auto welding technical field of PWR nuclear power plant main pipeline, be specifically related to the bevel for welding structure of the narrow gap auto welding of a kind of main pipeline.
Background technology
Main pipeline is the important component part on PWR nuclear power plant one circuit pressure border, bears high temperature, high pressure, high flow rate, radiating medium, and its on-the-spot installation is that nuclear island is installed critical path.Domesticly all adopt manual welding, joint quality affected by welder's state with on-the-spot installation of last primary loop piping, and welder's labour intensity is large, welding efficiency is low, long in time limit.
Summary of the invention
The object of the present invention is to provide the bevel for welding structure of the narrow gap auto welding of a kind of main pipeline, can carry out the narrow gap auto welding of main pipeline and connect, can improve the on-the-spot installation of nuclear power station main pipeline welding quality, shorten the nuclear island construction construction period.
Technical scheme of the present invention is as follows: the bevel for welding structure of the narrow gap auto welding of a kind of main pipeline, on main pipeline tube wall to be welded or main equipment, have the first double V-groove, the second double V-groove and the 3rd double V-groove, wherein, the 3rd double V-groove, the second double V-groove is connected from top to bottom successively with the first double V-groove, form three sections of V-structures that bore inside contracts gradually, wherein, the bottom root face height of the first double V-groove of lower end bore minimum is h0, the first double V-groove root face group is k1 to gap, and on main pipeline or main equipment, the length of bore hole is k2, the transition of being undertaken by the angle of α≤10 ° between interior bore hole and main pipeline or main equipment internal diameter.
The height h1 of the first described double V-groove is 18mm, and the height h2 of the second double V-groove is 50mm.
The first described double V-groove bottom One-sided Widths w0 is 3.2mm; The One-sided Widths w1 of the first described double V-groove and the second double V-groove transition position is 7.2mm; The width w3 of the 3rd described double V-groove upper end is no more than 10.3mm.
The bottom root face height h0 of the first double V-groove 1 of described lower end bore minimum is 2.5mm, the first double V-groove root face group is k1≤1mm to gap, and the length k2 of bore hole is 30mm on main pipeline or main equipment, the transition of being undertaken by the angle of α≤10 ° between interior bore hole and main pipeline or main equipment internal diameter.
The surface roughness of described whole bevel for welding structure meets Ra≤6.3 μ m.
Remarkable result of the present invention is: the bevel for welding structure of the narrow gap auto welding of a kind of main pipeline of the present invention, its groove width compares that manual welding groove was narrower in the past, dimensional accuracy is high, be convenient to the automatic welding of enforcement supervisor pipeline narrow gap, can improve the on-the-spot installation of nuclear power station main pipeline welding quality, shorten the nuclear island construction construction period.
Accompanying drawing explanation
Fig. 1 is the bevel for welding structural representation of the narrow gap auto welding of a kind of main pipeline of the present invention;
Fig. 2 is the partial enlarged drawing of Fig. 1;
In figure: 1, the first double V-groove; 2, the second double V-groove; 3, the 3rd double V-groove.
The specific embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figure 1 and Figure 2, the bevel for welding structure of the narrow gap auto welding of a kind of main pipeline, be included in the first double V-groove 1, the second double V-groove 2 and the 3rd double V-groove 3 that on main pipeline tube wall or main equipment, have, wherein, the 3rd double V-groove 3, the second double V-groove 2 are connected from top to bottom successively with the first double V-groove 1, form three sections of V-structures that bore inside contracts gradually, the bottom root face height h0 of the first double V-groove 1 is 2.5mm, and the first double V-groove 1 root face group is to gap k1≤1mm; In three connected grooves, the height h1 of the first double V-groove 1 is 18mm, and the first double V-groove 1 bottom One-sided Widths w0 is 3.2mm, and the One-sided Widths w1 of the first double V-groove 1 and the second double V-groove 2 transition positions is 7.2mm; The height h2 of the second double V-groove 2 is 50mm, and the One-sided Widths w2 of the second double V-groove 2 and the 3rd double V-groove 3 transition positions is 8.8mm, and the width w3 of the 3rd double V-groove 3 upper ends is no more than 10.3mm; In on main pipeline or main equipment, the length k2 of bore hole is 30mm, the transition of being undertaken by the angle of α≤10 ° between interior bore hole and main pipeline or main equipment internal diameter.In this bevel for welding structure, the surface roughness of whole bevel for welding structure meets Ra≤6.3 μ m.
Claims (5)
1. the bevel for welding structure of the narrow gap auto welding of main pipeline, it is characterized in that: on main pipeline tube wall to be welded or main equipment, have the first double V-groove (1), the second double V-groove (2) and the 3rd double V-groove (3), wherein, the 3rd double V-groove (3), the second double V-groove (2) is connected from top to bottom successively with the first double V-groove (1), form three sections of V-structures that bore inside contracts gradually, wherein, the bottom root face height of first double V-groove (1) of lower end bore minimum is h0, the first double V-groove (1) root face group is k1 to gap, and on main pipeline or main equipment, the length of bore hole is k2, the transition of being undertaken by the angle of α≤10 ° between interior bore hole and main pipeline or main equipment internal diameter.
2. the bevel for welding structure of the narrow gap auto welding of a kind of main pipeline according to claim 1, is characterized in that: the height h1 of described the first double V-groove (1) is 18mm, and the height h2 of the second double V-groove (2) is 50mm.
3. the bevel for welding structure of the narrow gap auto welding of a kind of main pipeline according to claim 1, is characterized in that: described the first double V-groove (1) bottom One-sided Widths w0 is 3.2mm; Described the first double V-groove (1) is 7.2mm with the One-sided Widths w1 of the second double V-groove (2) transition position; The width w3 of the 3rd described double V-groove (3) upper end is no more than 10.3mm.
4. the bevel for welding structure of the narrow gap auto welding of a kind of main pipeline according to claim 1, it is characterized in that: the bottom root face height h0 of the first double V-groove 1 of described lower end bore minimum is 2.5mm, the first double V-groove (1) root face group is k1≤1mm to gap, and the length k2 of bore hole is 30mm on main pipeline or main equipment, the transition of being undertaken by the angle of α≤10 ° between interior bore hole and main pipeline or main equipment internal diameter.
5. according to the bevel for welding structure of the narrow gap auto welding of any one main pipeline described in claim 1 ~ 4, it is characterized in that: the surface roughness of described whole bevel for welding structure meets Ra≤6.3 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210539089.XA CN103862187A (en) | 2012-12-13 | 2012-12-13 | Welding groove structure for main pipe narrow gap automatic welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210539089.XA CN103862187A (en) | 2012-12-13 | 2012-12-13 | Welding groove structure for main pipe narrow gap automatic welding |
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| CN103862187A true CN103862187A (en) | 2014-06-18 |
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| CN201210539089.XA Pending CN103862187A (en) | 2012-12-13 | 2012-12-13 | Welding groove structure for main pipe narrow gap automatic welding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114131154A (en) * | 2021-11-04 | 2022-03-04 | 中广核研究院有限公司 | Welding method for low alloy steel adapter tube of reactor main equipment |
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| CN101077547A (en) * | 2006-08-25 | 2007-11-28 | 中国核工业第二三建设公司 | Large posted sides pipeline narrow gap tungsten electrode noble gas protecting all-position automatic soldering method |
| CN101293303A (en) * | 2008-06-13 | 2008-10-29 | 中国船舶重工集团公司第七二五研究所 | TIG automatic welding technique for titanium alloy thick plate narrow interstice |
| US20100183112A1 (en) * | 2008-12-26 | 2010-07-22 | Hitachi, Ltd. | Method of manufacturing core shroud for nuclear power plant and structure of nuclear power plant |
| CN102169736A (en) * | 2011-01-19 | 2011-08-31 | 中国核工业第五建设有限公司 | Installing method for main pipeline of coolant system of nuclear power station |
| CN102653022A (en) * | 2012-05-16 | 2012-09-05 | 中国核工业二三建设有限公司 | Method for welding narrow-gap butt-joint connector of pipeline with large pipe diameter and thick wall |
| CN203018923U (en) * | 2012-12-13 | 2013-06-26 | 中国核动力研究设计院 | Main-pipeline narrow-gap automatic-welding welding groove structure |
-
2012
- 2012-12-13 CN CN201210539089.XA patent/CN103862187A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101077547A (en) * | 2006-08-25 | 2007-11-28 | 中国核工业第二三建设公司 | Large posted sides pipeline narrow gap tungsten electrode noble gas protecting all-position automatic soldering method |
| CN101293303A (en) * | 2008-06-13 | 2008-10-29 | 中国船舶重工集团公司第七二五研究所 | TIG automatic welding technique for titanium alloy thick plate narrow interstice |
| US20100183112A1 (en) * | 2008-12-26 | 2010-07-22 | Hitachi, Ltd. | Method of manufacturing core shroud for nuclear power plant and structure of nuclear power plant |
| CN102169736A (en) * | 2011-01-19 | 2011-08-31 | 中国核工业第五建设有限公司 | Installing method for main pipeline of coolant system of nuclear power station |
| CN102653022A (en) * | 2012-05-16 | 2012-09-05 | 中国核工业二三建设有限公司 | Method for welding narrow-gap butt-joint connector of pipeline with large pipe diameter and thick wall |
| CN203018923U (en) * | 2012-12-13 | 2013-06-26 | 中国核动力研究设计院 | Main-pipeline narrow-gap automatic-welding welding groove structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114131154A (en) * | 2021-11-04 | 2022-03-04 | 中广核研究院有限公司 | Welding method for low alloy steel adapter tube of reactor main equipment |
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Application publication date: 20140618 |