CN108098177A - Material-changing water tank steel linear welding method inside a kind of nuclear power station - Google Patents
Material-changing water tank steel linear welding method inside a kind of nuclear power station Download PDFInfo
- Publication number
- CN108098177A CN108098177A CN201711423991.4A CN201711423991A CN108098177A CN 108098177 A CN108098177 A CN 108098177A CN 201711423991 A CN201711423991 A CN 201711423991A CN 108098177 A CN108098177 A CN 108098177A
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- CN
- China
- Prior art keywords
- welding
- water tank
- steel linear
- changing water
- weld seam
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- 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.)
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Classifications
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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
- 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
Abstract
The invention discloses material-changing water tank steel linear welding methods inside a kind of nuclear power station, internal material-changing water tank steel linear is arranged on nuclear power plant containment shell workshop bottom plate, embedded board is embedded in containment building bottom plate, internal material-changing water tank steel linear is welded to form by steel linear plate, steel linear plate is stainless-steel sheet, and nuclear power station inside material-changing water tank steel linear welding method includes following welding step：Pre-buried plate welding seams preferentially weld；It is staggeredly arranged by the welding bead connector spatial position of the welding of " fourth " word seam order welding method and per pass weld seam.The present invention is realized using embedded board pre-buried in nuclear power plant containment shell workshop bottom plate and is rigidly fixed support to internal material-changing water tank steel linear；" fourth " word seam order welding method is utilized, the whole promotion of internal material-changing water tank steel linear welding quality is realized, reduces peak stress concentration phenomenon.Internal material-changing water tank steel linear welding method is arranged in a manner that welding bead connector spatial position is staggered, and reduces the possibility of weld seam internal flaw generation.
Description
Technical field
The present invention relates to the installation technology of steel structure field of nuclear power, more particularly to nuclear power station inside material-changing water tank steel linear
Welding technique, a kind of specifically material-changing water tank steel linear welding method inside nuclear power station.
Background technology
The containment building bottom plate of large-scale advanced pressurized water reactor nuclear power plant CAP1400 nuclear power stations include stop leakage in the roof slot, embedded board with
And steel linear.Position where embedded board is usually irregular, and the size dimension of embedded board is also different, since steel linear has
Certain thickness, and size also differs, therefore welding will exist simultaneously many places " fourth " word there are a variety of fusion lengths
Seam.Substantial amounts of weld seam makes steel linear during welded and installed, is susceptible to weldquality problem, and serious welding is caused to become
Shape, the total quality of feed-tank bring hidden danger.
The content of the invention
The technical problems to be solved by the invention are present situations for the above-mentioned prior art, and weld seam matter can be effectively improved by providing
Amount reduces area of stress concentration peak stress, reduces material-changing water tank steel linear inside a kind of nuclear power station of welding deformation displacement trend
Welding method.
To realize above-mentioned technical purpose, the technical solution that the present invention takes is：
Material-changing water tank steel linear welding method inside a kind of nuclear power station, internal material-changing water tank steel linear are arranged on nuclear power plant containment shell
On workshop bottom plate, pre-buried in the containment building bottom plate there are many irregular embedded board in position, internal material-changing water tank steel linears
It is welded to form by the steel linear plate of sizes, steel linear plate is with certain thickness stainless-steel sheet, is changed inside nuclear power station
Expect that water tank steel linear welding method includes following welding step：
1), using embedded board, the characteristics of not being subjected to displacement is fixed in position in containment building bottom plate, preferential by pre-buried plate welding seams
The order of welding preferentially welds the weld seam between embedded board and respective steel cladding boards, and internal material-changing water tank steel is covered with playing embedded board
Face rigidly fixes supporting role；
2), between embedded board and steel linear plate and between steel linear plate and steel linear plate during weld seam welds, abide by first
The intersecting weld seam of welding, then welds " fourth " word seam order welding method of straight weld again, and the definition of described " fourth " word seam is straight for one
There is the intersecting weld seam intersected with the straight weld in weld seam, form " fourth " word seam in the weld seam path of the straight weld.
3), internal material-changing water tank steel linear is during welded and installed is completed, and the welding bead connector between per pass weld seam is even to be
The mode that spatial position is staggered is arranged, is finally completed the welded and installed of internal material-changing water tank steel linear.
To optimize above-mentioned technical proposal, the concrete measure taken further includes：
Above-mentioned steel linear plate is the two phase stainless steel steel plate of 14 millimeters of thickness, and the steel of the inside material-changing water tank steel linear covers
Panel welded and installed by the way of multi-pass welding, within the same layer when all weld seams be stuffed entirely with it is smooth after be further continued for it is next
The welding of layer weld seam.
It is arranged on the whole for the mode that spatial position is staggered between welding bead connector between layers in the welding process.
In above-mentioned step 2) after the completion of the welding of intersecting weld seam, then using sander to the phase of intersecting weld seam and straight weld
Position is handed over to carry out polishing repair process, then carries out the welding of straight weld again.
If the weld seam of embedded board surrounding and the weld seam of steel linear plate surrounding are non-intersect in above-mentioned step 1), embedded board
The weld seam of surrounding can directly weld completion；There is " fourth " word with the weld seam of steel linear plate surrounding and stitch in the weld seam of embedded board surrounding, then
It is welded by " fourth " word seam order welding method.
The distance that welding bead connector spatial position is staggered between per pass weld seam is 20mm；Weldering between layers in the welding process
The distance that spatial position is staggered on the whole between road connector is 20mm.
Compared with prior art, the beneficial effects of the present invention are：
1st, embedded board pre-buried in nuclear power plant containment shell workshop bottom plate is taken full advantage of, is realized to internal material-changing water tank steel linear
The processing and fabricating and the use that rigidly fix support, reduce frock.
2nd, " fourth " word seam order welding method is utilized, the whole promotion of internal material-changing water tank steel linear welding quality is realized, subtracts
Peak stress concentration phenomenon is lacked.
3rd, internal material-changing water tank steel linear welding method is arranged in a manner that welding bead connector spatial position is staggered, and is reduced
The possibility that weld seam internal flaw generates.
4th, requirement of the internal material-changing water tank steel linear welding method to allowance weld end, improves allowance weld end and connects
Head performance reduces the possibility of defect generation.
Description of the drawings
Fig. 1 is the position view of embedded board in the present invention；
Fig. 2 is the structure diagram of " fourth " word seam of the invention；
Fig. 3 staggers schematic diagram for same layer welding bead connector spatial position of the present invention；
Fig. 4 staggers schematic diagram for different layers welding bead connector spatial position of the present invention；
Fig. 5 is the welding sequence schematic diagram of the first step of the present invention；
Fig. 6 is the welding sequence schematic diagram of second step of the present invention；
Fig. 7 is the welding sequence schematic diagram of the 3rd step of the invention；
Fig. 8 is the welding sequence schematic diagram of the 4th step of the invention；
Fig. 9 is the welding sequence schematic diagram of the 5th step of the invention.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
The present invention reference numeral be：Steel linear plate 1, embedded board 2, embedded board surrounding and other weld seams are disjoint knot
Structure state signal A, the structural representation B that embedded board surrounding and other weld seams are intersection, straight weld 3, weld seam 4, welding bead are intersected
Connector 5, second step welding sequence 1., the welding sequence of the 3rd step 2., the welding sequence schematic diagram of the 4th step 3., the 5th step
Welding sequence is 4..
Material-changing water tank steel linear welding method inside a kind of nuclear power station, internal material-changing water tank steel linear are arranged on nuclear power station safety
On full shell workshop bottom plate, nuclear power plant containment shell workshop bottom plate is reinforced concrete structure, is embedded in the containment building bottom plate
A variety of irregular embedded boards 2 in position, embedded board 2 have size of different sizes, and firm in structure, position is fixed, and position does not occur
It moves.The internal multiple steel linear plates 1 of material-changing water tank steel linear are welded to form, and steel linear plate 1 equally has sizes.In order to make core
The quality of material-changing water tank steel linear welded and installed inside power station, reduces the area of stress concentration peak stress in welding process, reduces
The trend of welding deformation displacement, nuclear power station of the invention inside material-changing water tank steel linear welding method include following welding step,
In other words including following welding key point：
1), pre-buried plate welding seams preferentially weld：Using embedded board 2, the spy not being subjected to displacement is fixed in position in containment building bottom plate
Point, the order preferentially welded by pre-buried plate welding seams preferentially weld the weld seam between embedded board 2 and respective steel cladding boards 1, pre- to play
Buried plate 2 rigidly fixes supporting role to internal material-changing water tank steel linear；
2), using " fourth " word seam order welding method：Between embedded board 2 and steel linear plate 1 and between steel linear plate 1 and steel linear plate 1
It during weld seam welds, abides by and first welds intersecting weld seam 4, then weld " fourth " word seam order welding method of straight weld 3, institute again
The definition for " fourth " word seam stated is a straight weld 3, there is what is intersected with the straight weld 3 in the weld seam path of the straight weld 3
Intersecting weld seam 4 forms " fourth " word seam.
3), 5 position of per pass weld passes connector is staggeredly arranged：Internal material-changing water tank steel linear completes the mistake of welded and installed
Cheng Zhong, welding bead connector 5 between per pass weld seam is even to be arranged for the mode that spatial position is staggered, and is finally completed internal material-changing water tank steel and is covered
The welded and installed in face.
In embodiment, steel linear plate 1 of the invention be 14 millimeters of thickness two phase stainless steel steel plate, internal material-changing water tank steel
The steel linear plate 1 of clad can welded and installed by the way of multi-pass welding, within the same layer when all weld seams be stuffed entirely with it is smooth
The welding of next layer of weld seam is further continued for afterwards.Also it is in the welding process space bit on the whole between welding bead connector between layers
The mode to stagger is put to arrange.
For a multi-pass welding weld seam, receive arc arc crater and be susceptible to defect, need grinding process sometimes.Multiple welding beads connect
If first 5 concentrate at one, the possibility that defect occurs greatly increases, simultaneously because grinding process position is concentrated, can also influence
Bevel shape.The method that the present invention uses is that spatially position is staggered for welding bead connector between per pass weld seam, to avoid concentration, weldering
The distance that road connector staggers is 20mm；Spatially integral position is also adopted between welding bead connector between layers in the welding process
With the mode of being staggeredly arranged, the distance that welding bead connector between layers integrally staggers is 20mm.
The present invention when using " fourth " word seam order welding method after the completion of intersecting weld seam 4 welds, then using sander to phase
Weld seam 4 and the intersection location of straight weld 3 is handed over to carry out polishing repair process, then carries out the welding of straight weld 3 again.
The present invention is first welding intersecting weld seam 4, the weld seam end portion of so intersecting weld seam 4 using " fourth " word seam order welding method
Processing is just fairly simple, carries out polishing reparation, eliminates the possibility that end of welding bead is susceptible to defect, and when polishing need not examine straight weld
3 state.
If first welding straight weld 3, when the intersecting weld seam 4 of welding, intersect weld seam 4 and 3 intersection of straight weld, either play arcuation
State or receipts arcuation state, the possibility for defect occur all greatly increase.
In addition, first welding line（2）, under opposite free state, stress obtains part release for end, and reducing should at this
Power peak value reduces the possibility for generating defect.
There are two types of state, i.e., A condition and B state, A condition in Fig. 1 of the present invention are shown as embedded board for the position of embedded board 2
2 surroundings and the disjoint state of weld seam of other steel linear plates 1, B state are then 2 surrounding of embedded board and other steel linear plates 1
Weld seam is in intersecting state.In the welding method of the present invention, if the weld seam of 2 surrounding of embedded board and 1 surrounding of steel linear plate
Weld seam is non-intersect, is A condition, then the weld seam of 2 surrounding of embedded board can directly weld completion；If the weld seam of 2 surrounding of embedded board
There is " fourth " word with the weld seam of 1 surrounding of steel linear plate to stitch, then welded by " fourth " word seam order welding method.Intersecting weld seam 4 is first welded,
Straight weld 3 is welded again.
Fig. 5 to Fig. 9 is the specific implementation method of material-changing water tank steel linear welding method inside nuclear power station of the present invention：The present invention
Inside material-changing water tank steel linear be arranged on nuclear power plant containment shell workshop bottom plate, it is pre-buried in the containment building bottom plate there are many
The irregular embedded board in position, internal material-changing water tank steel linear are welded to form by the steel linear plate of sizes, and steel linear plate 1 is
The two phase stainless steel steel plate of 14 millimeters of thickness.
The first step, using embedded board 2, the characteristics of not being subjected to displacement is fixed in position in containment building bottom plate, by embedded board
The order that 2 weld seams preferentially weld preferentially welds the weld seam between embedded board 2 and respective steel cladding boards 1, completes embedded board 2 and steel linear
The welding of plate 1；There are two kinds of situations when embedded board 2 is welded with steel linear plate 1, i.e., if the weld seam of 2 surrounding of embedded board is covered with steel
The weld seam of 1 surrounding of panel is non-intersect, then the weld seam of 2 surrounding of embedded board can directly weld completion；If the weld seam of 2 surrounding of embedded board
There is " fourth " word with the weld seam of 1 surrounding of steel linear plate to stitch, then " fourth " word seam that set aside pre-embedded part 2 intersects with other weld seams.Such as Fig. 5
The black solid line of middle end label is the schematic diagram of first step welding portion, while as can be seen from Figure 5 has at 6 and be reserved with " fourth " word
Seam.
Second step according to " fourth " word seam order welding method, completes the intersecting weld seam 4 that " fourth " word formed between steel linear plate 1 stitches
Welding, intersect after the completion of weld seam 4 welds, then polished using sander intersecting weld seam 4 and the intersection location of straight weld 3
Repair process.The present invention Fig. 6 in the black solid line of label 1. be second step welding steel linear plate 1 between formed " fourth " word seam
Intersecting weld seam 4.
3rd step according to " fourth " word seam order welding method, completes the straight weld 3 of " fourth " word formed between steel linear plate 1 seam
Welding and the intersecting weld seam 4 of reserved " fourth " word seam of completion, after the completion of the welding of intersecting weld seam 4 for reserving " fourth " word seam, then use
Sander carries out polishing reparation to the intersecting weld seam 4 and the intersection location of the straight weld 3 of reserved " fourth " word seam of reserving " fourth " word seam
Processing.The black solid line of label 2. is the weld seam of the 3rd step welding in Fig. 7 of the present invention.As can be seen from the figure steel linear plate 1
Straight weld 3 in, have the straight weld 3 of part while be also the intersecting weld seam 4 of reserved " fourth " word seam.
4th step according to " fourth " word seam order welding method, completes the welding of the straight weld 3 of reserved " fourth " word seam, and welding is completed
The interior section of internal material-changing water tank steel linear.The black solid line of label 3. is the straight weldering of the 4th step welding in Fig. 8 of the present invention
Seam 3.
5th step, according to " fourth " word seam order welding method, the outer periphery part of the internal material-changing water tank steel linear of completion；Extremely
This, completes the welded and installed process of material-changing water tank steel linear inside entire nuclear power station.The black solid line of label 4. in Fig. 9 of the present invention
The weld seam of as the 5th step welding.
In embodiment, since the steel linear plate 1 of the present invention is thicker, thickness is 14 millimeters, therefore internal material-changing water tank steel covers
Face is during welded and installed is completed, and welding bead connector 5 between per pass weld seam is even to be arranged for the mode that spatial position is staggered, finally
Complete the welded and installed of internal material-changing water tank steel linear.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.
Claims (6)
1. material-changing water tank steel linear welding method inside a kind of nuclear power station, it is characterized in that：The inside material-changing water tank steel linear
It is arranged on nuclear power plant containment shell workshop bottom plate, it is pre-buried there are many irregular embedded board in position in the containment building bottom plate,
The inside material-changing water tank steel linear is welded to form by the steel linear plate of sizes, and the steel linear plate is with certain
The stainless-steel sheet of thickness, nuclear power station inside material-changing water tank steel linear welding method include following welding step：
1), using embedded board, the characteristics of not being subjected to displacement is fixed in position in containment building bottom plate, preferential by pre-buried plate welding seams
The order of welding preferentially welds the weld seam between embedded board and respective steel cladding boards, and internal material-changing water tank steel is covered with playing embedded board
Face rigidly fixes supporting role；
2), between embedded board and steel linear plate and between steel linear plate and steel linear plate during weld seam welds, abide by first
The intersecting weld seam of welding, then welds " fourth " word seam order welding method of straight weld again, and the definition of described " fourth " word seam is straight for one
There is the intersecting weld seam intersected with the straight weld in weld seam, form " fourth " word seam in the weld seam path of the straight weld；
3), for internal material-changing water tank steel linear during welded and installed is completed, the welding bead connector between per pass weld seam is even for space
The mode that position is staggered is arranged, is finally completed the welded and installed of internal material-changing water tank steel linear.
2. material-changing water tank steel linear welding method inside a kind of nuclear power station according to claim 1, it is characterized in that：Described
Steel linear plate is the two phase stainless steel steel plate of 14 millimeters of thickness, and the steel linear plate of the inside material-changing water tank steel linear is using more
The mode welded and installed of layer multi-pass welding, is further continued for the weldering of next layer of weld seam after all weld seams are stuffed entirely with smooth within the same layer
It connects.
3. material-changing water tank steel linear welding method inside a kind of nuclear power station according to claim 2, it is characterized in that：It is welding
It is also arranged on the whole for the mode that spatial position is staggered between welding bead connector between layers in the process.
4. material-changing water tank steel linear welding method inside a kind of nuclear power station according to claim 3, it is characterized in that：Described
In step 2) after the completion of the welding of intersecting weld seam, then polished the intersection location for intersecting weld seam and straight weld using sander
Then repair process carries out the welding of straight weld again.
5. material-changing water tank steel linear welding method inside a kind of nuclear power station according to claim 4, it is characterized in that：Described
If the weld seam of embedded board surrounding and the weld seam of steel linear plate surrounding are non-intersect in step 1), the weld seam of embedded board surrounding can be straight
Welding is connect to complete；There is " fourth " word with the weld seam of steel linear plate surrounding and stitch in the weld seam of embedded board surrounding, then by " fourth " word seam order
Welding method is welded.
6. material-changing water tank steel linear welding method inside a kind of nuclear power station according to claim 5, it is characterized in that：Per pass welds
The distance that welding bead connector spatial position is staggered between seam is 20mm；In the welding process in entirety between welding bead connector between layers
The distance that upper spatial position is staggered is 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711423991.4A CN108098177B (en) | 2017-12-25 | 2017-12-25 | Welding method for steel clad surface of refueling water tank inside nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711423991.4A CN108098177B (en) | 2017-12-25 | 2017-12-25 | Welding method for steel clad surface of refueling water tank inside nuclear power station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108098177A true CN108098177A (en) | 2018-06-01 |
| CN108098177B CN108098177B (en) | 2020-09-29 |
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ID=62212935
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711423991.4A Active CN108098177B (en) | 2017-12-25 | 2017-12-25 | Welding method for steel clad surface of refueling water tank inside nuclear power station |
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| JP2000301365A (en) * | 1999-04-14 | 2000-10-31 | Hitachi Ltd | Production of structural body and structural body |
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| CN102069307A (en) * | 2010-10-15 | 2011-05-25 | 林德工程（杭州）有限公司 | Method for welding bottom plate of large flat-bottom storage tank |
| CN102848087A (en) * | 2011-06-30 | 2013-01-02 | 五冶集团上海有限公司 | Tank fabricating and welding method |
| CN105252158A (en) * | 2015-11-17 | 2016-01-20 | 中国三冶集团有限公司 | Welding construction method for bottom plate of large storage tank |
| CN105834551A (en) * | 2016-05-20 | 2016-08-10 | 中冶天工集团天津有限公司 | Welding method for large cylinder type steel storage tank bottom plate |
| CN107042366A (en) * | 2016-12-14 | 2017-08-15 | 柳州振业焊接机电设备制造有限公司 | The method of automatic welding |
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2017
- 2017-12-25 CN CN201711423991.4A patent/CN108098177B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000301365A (en) * | 1999-04-14 | 2000-10-31 | Hitachi Ltd | Production of structural body and structural body |
| CN101491863A (en) * | 2008-12-24 | 2009-07-29 | 傅凤义 | Metal oil tank production method |
| CN102069307A (en) * | 2010-10-15 | 2011-05-25 | 林德工程（杭州）有限公司 | Method for welding bottom plate of large flat-bottom storage tank |
| CN102848087A (en) * | 2011-06-30 | 2013-01-02 | 五冶集团上海有限公司 | Tank fabricating and welding method |
| CN105252158A (en) * | 2015-11-17 | 2016-01-20 | 中国三冶集团有限公司 | Welding construction method for bottom plate of large storage tank |
| CN105834551A (en) * | 2016-05-20 | 2016-08-10 | 中冶天工集团天津有限公司 | Welding method for large cylinder type steel storage tank bottom plate |
| CN107042366A (en) * | 2016-12-14 | 2017-08-15 | 柳州振业焊接机电设备制造有限公司 | The method of automatic welding |
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| CN108098177B (en) | 2020-09-29 |
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