CN108326460A - A kind of stub (tube) welding method on Nuclear piping - Google Patents
A kind of stub (tube) welding method on Nuclear piping Download PDFInfo
- Publication number
- CN108326460A CN108326460A CN201810112507.4A CN201810112507A CN108326460A CN 108326460 A CN108326460 A CN 108326460A CN 201810112507 A CN201810112507 A CN 201810112507A CN 108326460 A CN108326460 A CN 108326460A
- Authority
- CN
- China
- Prior art keywords
- tube
- stub
- diameter
- positioning cylinder
- nuclear
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000010586 diagram Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003032 molecular docking 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
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C21/00—Apparatus or processes specially adapted to the manufacture of reactors or parts thereof
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The present invention relates to a kind of welding methods of the stub (tube) on Nuclear piping, include the following steps：One, the outer profile and first segment endoporus of stub (tube) are first processed, and positioning cylinder is machined in stub (tube) lower end；Two, the positioning round orifice that diameter is more than positioning cylinder diameter is offered on Nuclear piping, the length of positioning cylinder is less than the thickness of tube wall；Three, the positioning cylinder that will take over a lower end is inserted into positioning round orifice, will take over seat later and Nuclear piping is welded as a whole；Four, the extension reaming from first segment endoporus, the through-hole of the stub (tube) and Nuclear piping that are integrally formed after processing welding.This invention ensures that stub (tube) dimensional accuracy, positional precision, geometric tolerance and inner surface entirety roughness, to ensureing that the safety of nuclear power system is of great importance.
Description
Technical field
The invention belongs to Nuclear piping fields, and in particular to a kind of welding method of the stub (tube) on Nuclear piping.
Background technology
Nuclear power station requires items of equipment very high to ensure nuclear safety.It has been generally designed and has been permitted on the pipeline of nuclear power station
It is chiefly used in the stub (tube) of measuring temperature and pressure.Stub (tube) on main nuclear power pipeline as depicted in figs. 1 and 2, main nuclear power pipeline
It is the pipeline connected between nuclear reactor and steam generator, belongs to I grades of equipment of nuclear safety, so the quality requirement to welding is non-
Chang Gao does not allow there are misalignment, overlap, root are prominent, indent and metal oxidation etc..Simultaneously to the size of the stub (tube) after welding
Precision, positional precision, Geometrical Tolerance Principle are also all very high, or even to the inner surface entirety roughness requirements of final endoporus
It is very high.
The method that stub (tube) welding on pipeline in the prior art generally uses is as shown in figure 3, first will take over seat processing
At final size, the shape and endoporus of stub (tube) first machine, and drill on pipeline, the diameter in the hole on pipeline
It is identical in stub (tube) diameter of bore, then it is grouped and welds on pipeline.The method disadvantage stub (tube) of the prior art welds
Locate inner surface there are stomata, protrusion, pit, oxidation the defects of, influence stub (tube) weld seam long-term safety use, there are inner surfaces
The risk of weld corrosion and leakage.In addition existing method stub (tube) dimensional accuracy ± 1 °, positional precision ± 3mm, geometric tolerance
For 12.5 μm of 1.5m concentricities and inner surface entirety roughness Ra, thus the stub (tube) dimensional accuracy of the prior art, positional precision,
Geometric tolerance and inner surface entirety roughness are also difficult to ensure.
Since nuclear power system pipeline interior media is highly pressurised liquid, first welding quality cannot be guaranteed, it may appear that leakage
Situation, influences safe operations in 60 years of nuclear power station, so must assure that the quality of welding meets designing quality requirement, does not allow
What incumbent leakage.
Invention content
The object of the present invention is to provide a kind of welding methods of the stub (tube) on Nuclear piping, ensure that taking over after welding
Seat dimensional accuracy, positional precision, geometric tolerance and inner surface entirety roughness meet the design drawing requirement of nuclear power designing institute, together
When avoid stub (tube) welding root existing defects.
The purpose of the present invention solves by the following technical programs：
A kind of welding method of stub (tube) on Nuclear piping, includes the following steps：
One, the outer profile and first segment endoporus a of stub (tube) 2 are first processed, and positioning cylinder b is machined in 2 lower end of stub (tube)；
Two, the positioning round orifice c that diameter is more than positioning cylinder b diameters, the length of positioning cylinder b are offered on Nuclear piping 1
Thickness of the degree less than tube wall；
Three, the positioning cylinder b that will take over a lower end is inserted into positioning round orifice c, will take over seat 2 later and Nuclear piping 1 welds
It is connected in one；
Four, the extension reaming from first segment endoporus a, the stub (tube) being integrally formed after processing welding and Nuclear piping lead to
Hole.
As more preferably technical solution of the invention：Extend the diameter 31.5mm ± 0.3mm, positioning cylinder b of reaming after welding
Diameter 26mm, the diameter 0.07 of the diameter of the diameter 26mm of positioning round orifice c, positioning round orifice c more than positioning cylinder b~
0.13mm。
It has the beneficial effect that：
There are root defects to remove for the Nuclear piping in the prior art that welding method provided by the invention solves, such as wrong
Side, overlap root protrusion, indent and metal oxidation etc., improve the roughness of stub (tube) endoporus, it is entirely avoided take over root
There are various defects for weld seam.Stub (tube) dimensional accuracy ± 0.3 °, positional precision ± 1.5mm after welding, geometric tolerance are
3.2 μm of 0.25mm concentricities and inner surface entirety roughness Ra, it can be seen that this method ensure that stub (tube) dimensional accuracy, position
Precision, geometric tolerance and inner surface entirety roughness, the present invention is to ensureing that the safety of nuclear power system is of great importance.
Description of the drawings
Fig. 1 is main nuclear power pipeline schematic diagram；
Fig. 2 is main nuclear power pipeline stub (tube) schematic diagram；
Fig. 3 is the welding method schematic diagram of the prior art；
Fig. 4 is the structural schematic diagram of the stub (tube) after the processing of the stub (tube) welding method of the present invention；
Fig. 5 is the structural schematic diagram of the positioning round orifice of the processing of the stub (tube) welding method of the present invention；
Fig. 6 is the schematic diagram of the stub (tube) of the stub (tube) welding method of the present invention and the welding group pair of Nuclear piping；
Fig. 7 is the schematic diagram of the stub (tube) and Nuclear piping of the stub (tube) welding of the present invention being welded as a whole；
Fig. 8 is the signal of the extension reaming after the welding of the stub (tube) and Nuclear piping of the stub (tube) welding method of the present invention
Figure.
Specific implementation mode
The method of the present invention is described further below by way of the embodiment that attached drawing provides.The method of the present invention is according in our factory
The shape and size etc. of actual product are designed making.
Embodiment 1
The present invention provides a kind of welding method of the stub (tube) on Nuclear piping, includes the following steps：One, as shown in figure 4,
The outer profile and first segment endoporus a of stub (tube) 2 are first processed, and positioning cylinder b is machined in 2 lower end of stub (tube)；Two, such as Fig. 5 institutes
Show, the positioning round orifice c that diameter is more than positioning cylinder b diameters is offered on Nuclear piping 1, and the length of positioning cylinder b is less than pipe
The thickness of wall；Three, as shown in fig. 6, the positioning cylinder b that will take over a lower end is inserted into positioning round orifice c, as shown in Figure 7 will later
Stub (tube) 2 and Nuclear piping 1 are welded as a whole；Four, the extension reaming from first segment endoporus a as shown in Figure 8, after processing welding
The through-hole of the stub (tube) and Nuclear piping that are integrally formed.Extend the diameter 31.5mm ± 0.3mm, positioning cylinder b of reaming after welding
Diameter 26mm, the diameter 0.07 of the diameter of the diameter 26mm of positioning round orifice c, positioning round orifice c more than positioning cylinder b~
0.13mm.Stub (tube) dimensional accuracy ± 0.3 °, positional precision ± 1.5mm, geometric tolerance after welding be 0.25mm concentricities and
3.2 μm of inner surface entirety roughness Ra, method compared to the prior art completely avoid take over root run and are lacked there are various
It falls into, ensure that stub (tube) dimensional accuracy, positional precision, geometric tolerance and the inner surface entirety roughness after welding comply with standard,
Improve the safety of nuclear power system.The welding method of Nuclear piping upper connecting tube seat provided by the invention, is applied especially to dock
The welding quality of tube socket dimension precision requirement height and docking tube socket requires stringent welding group pair.
The present invention is not limited to this example, those skilled in the art's enlightenment according to the present invention, without passing through creative labor
It is dynamic to position bore dia and positioning cylinder diameter by change to realize the welding of different-diameter take over tube socket.
Claims (2)
1. a kind of welding method of the stub (tube) on Nuclear piping, it is characterised in that：Include the following steps：
One, the outer profile and first segment endoporus of stub (tube) are first processed, and positioning cylinder is machined in stub (tube) lower end；
Two, the positioning round orifice that diameter is more than positioning cylinder diameter is offered on Nuclear piping, the length of positioning cylinder is less than pipe
The thickness of wall；
Three, the positioning cylinder that will take over a lower end is inserted into positioning round orifice, will take over seat later and Nuclear piping is welded as a whole；
Four, the extension reaming from first segment endoporus a, the through-hole of the stub (tube) and Nuclear piping that are integrally formed after processing welding.
2. the welding method of the stub (tube) on a kind of Nuclear piping as described in claim 1, it is characterised in that：Extend after welding
Diameter 31.5mm ± 0.3mm of reaming, the diameter 26mm of positioning cylinder, the diameter 26mm of positioning round orifice, the diameter of positioning round orifice
More than 0.07~0.13mm of diameter of positioning cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810112507.4A CN108326460A (en) | 2018-02-05 | 2018-02-05 | A kind of stub (tube) welding method on Nuclear piping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810112507.4A CN108326460A (en) | 2018-02-05 | 2018-02-05 | A kind of stub (tube) welding method on Nuclear piping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108326460A true CN108326460A (en) | 2018-07-27 |
Family
ID=62928497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810112507.4A Pending CN108326460A (en) | 2018-02-05 | 2018-02-05 | A kind of stub (tube) welding method on Nuclear piping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108326460A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111805119A (en) * | 2020-07-08 | 2020-10-23 | 成都航利航空科技有限责任公司 | Cylindrical plug-in welding structure and positioning method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101585114A (en) * | 2009-01-14 | 2009-11-25 | 中国华电工程(集团)有限公司 | Welding method and structure of tube seat |
| CN101585115A (en) * | 2009-01-14 | 2009-11-25 | 中国华电工程(集团)有限公司 | Method and structure for welding sampling tube penetrating into medium container |
| CN203282129U (en) * | 2013-06-08 | 2013-11-13 | 哈电集团（秦皇岛）重型装备有限公司 | Positioning device for evaporator pipe end welding machine mandrel |
| KR20150009872A (en) * | 2013-07-17 | 2015-01-27 | 현대로템 주식회사 | Jig for welding of cylinder assembly |
| CN205237346U (en) * | 2015-12-30 | 2016-05-18 | 二重集团（德阳）重型装备股份有限公司 | Trunk line and circular filler neck welded groove structure |
| CN206519668U (en) * | 2016-12-28 | 2017-09-26 | 中核核电运行管理有限公司 | A kind of nuclear power plant's sea water service system pipeline branch pipe and the attachment structure of supervisor |
-
2018
- 2018-02-05 CN CN201810112507.4A patent/CN108326460A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101585114A (en) * | 2009-01-14 | 2009-11-25 | 中国华电工程(集团)有限公司 | Welding method and structure of tube seat |
| CN101585115A (en) * | 2009-01-14 | 2009-11-25 | 中国华电工程(集团)有限公司 | Method and structure for welding sampling tube penetrating into medium container |
| CN203282129U (en) * | 2013-06-08 | 2013-11-13 | 哈电集团（秦皇岛）重型装备有限公司 | Positioning device for evaporator pipe end welding machine mandrel |
| KR20150009872A (en) * | 2013-07-17 | 2015-01-27 | 현대로템 주식회사 | Jig for welding of cylinder assembly |
| CN205237346U (en) * | 2015-12-30 | 2016-05-18 | 二重集团（德阳）重型装备股份有限公司 | Trunk line and circular filler neck welded groove structure |
| CN206519668U (en) * | 2016-12-28 | 2017-09-26 | 中核核电运行管理有限公司 | A kind of nuclear power plant's sea water service system pipeline branch pipe and the attachment structure of supervisor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111805119A (en) * | 2020-07-08 | 2020-10-23 | 成都航利航空科技有限责任公司 | Cylindrical plug-in welding structure and positioning method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180727 |
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| RJ01 | Rejection of invention patent application after publication |