CN104439744B - 1000MW generator unit stator transport end cap welding method - Google Patents
1000MW generator unit stator transport end cap welding method Download PDFInfo
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- CN104439744B CN104439744B CN201410718417.1A CN201410718417A CN104439744B CN 104439744 B CN104439744 B CN 104439744B CN 201410718417 A CN201410718417 A CN 201410718417A CN 104439744 B CN104439744 B CN 104439744B
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- Prior art keywords
- welding
- end cap
- weld
- transport
- seam
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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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
-
- 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
- B23K2101/36—Electric or electronic devices
Abstract
The present invention provides a kind of 1000MW generator unit stator transport end cap welding method, by welding sequence, fillet weld size are controlled, rivet size Control, the setting of auxiliary lacing wire, eliminate specification and requirement that stress processes, reach to ensure welding Geometrical Tolerance Principle, control welding deformation, the weld seam making transport end cap and structural strength and reach transportation safety requirement, meet assembling and use requirement, it is ensured that 1000MW generator unit stator transportation safety.
Description
Technical field: the present invention relates to a kind of 1000MW generator unit stator transport end cap welding side
Method.
Background technology: 1000MW level ultra supercritical steam turbine generating stator transports the overweight degree that transfinites
Height, transport and difficulty thereof, transportation problem rises to bottlenecks, such as paper " 1000MW vapour
Preparation before turbine generator stator railway transportation " (article numbering 1005-006X (2013)
04-0057-02), " DQ45 type clamp type lorry end cap mode transports 1000MW generator unit stator
Experimental study " (article numbering 1001-4632 (2011) 04-0109-08) to this problem all
It is discussed in detail；
1000MW level ultra supercritical steam turbine electromotor design problems faced is the size of its stator
And weight exceedes transportation limitation, the transport in inland becomes bottlenecks problem.
At Railway Transport Industry, the transport of this kind of large cargo of large turbo-type generator stator belongs to long
Big goods transport, haulage vehicle version has the stronger specific aim, suitable special vehicle to be
The premise that can transport be implemented, and these vehicles are also developed for demand, turbine generator
Machine stator section is large, and self stiffness is high, is suitable for using schnabel car transport.
The structure clearance of railway, sweep, axle load, bridge changing load, vehicle set
The technical conditions such as meter specification constrain the design of cart, and the bearing capacity making vehicle can not be unrestricted
Raising, the bridges and culverts of some length-specifics becomes gap bridge and limits thresholding, makes the total of vehicle and goods
Weight maximum permissible value is defined, and under this constraint, loss of weight becomes generator unit stator and vehicle
Common issue；
1000MW generator unit stator entirety railway transportation scheme uses the transport of transport end cap version
Interface unit, transport end cap is the critical component of schnabel car transport 1000MW generator unit stator,
It is related to the integrity of vehicle, is responsible for static(al) and the transmission of transport shocks power, by clamp beam pin-and-hole
And the huge concentrfated load that compression leg applies to be delivered to support crust etc. by transport interface unit
Position；Owing to construction weight is strictly limited, structure is complicated, if welding step is with method not
When, easily cause that physical dimension is overproof, weld seam and structural strength do not reach transportation safety requirement etc.
Problem, generation cannot be assembled utilization or cause transportation safety hidden danger.
Summary of the invention: it is an object of the invention to provide a kind of 1000MW generator unit stator transport end
Lid welding method, by controlling welding sequence, fillet weld size, rivet size Control, auxiliary
The setting of lacing wire, the specification eliminating stress process and requirement, reach to ensure that welding form and position tolerance is wanted
Ask, control welding deformation, the weld seam making transport end cap and structural strength and reach transportation safety requirement,
Meet assembling and use requirement, it is ensured that 1000MW generator unit stator transportation safety.
The technical scheme is that a kind of 1000MW generator unit stator transport end cap welding side
Method, is characterized in that: take following scheme measure and step；
Physical dimension pre-adjusts scheme: the diameter of bore size of end plate is increased 8mm, gabarit
Diameter dimension increases 8mm；
During riveting, Basic architecture pre-adjusts scheme: group is away from increasing 5mm, interior away from increasing by 2
mm；
Riveting process and welding process follow these steps to and require to carry out:
Step one: riveting process, riveting weld width is 6-8mm, rivets fusion length 30-50
Mm, is spaced 200-300mm, and the size pre-adjusting scheme by physical dimension increases requirement riveting；
Use auxiliary strutting means: use and compensate the fixing left otic placode group of lacing wire auxiliary and auris dextra plate group；Adopt
By the method welding two transport end caps simultaneously, make two transport back-to-back connections of end cap with lacing wire；
Step 2: implement welding step, weld seam uses little weldering amount multiple welding method to complete, institute
The weldering amount average out to having main structure weld seam has welded for five times, compensate lacing wire interior compensation weld seam and
Repaying outward weld seam also average out to have welded for five times, the order of welding is every time: a seam outside weld,
B seam inside weld, compensates weld seam, otic placode inside weld in d, otic placode outside weld in e, f in c
External compensation weld seam, the outer otic placode inside weld of g, the outer otic placode outside weld of h；K cleaning polishing, flaw detection are also
Eliminate defect；Above-mentioned welding procedure a-k repeats to complete for five times whole weldering amounts of main structure weld seam altogether,
Welding wants two pieces transport end cap to carry out with step simultaneously, and left and right is also wanted in the welding of every transport end cap
Symmetry is carried out；Other non-master construction joints are carried out after the 4th main structure weld seam has welded；
Step 3: transport end cap annealing steps, the transport end cap completing all to weld still keeps
Back-to-back connection status, carries out annealing operation；After annealing operation terminates, excision lacing wire and compensation
Lacing wire, completes whole welding sequence.
Technique effect: physical dimension pre-adjusts scheme increases by 8 by the diameter of bore size of end plate
Mm, gabarit diameter dimension increase 8mm, and group is away from increasing 5mm, interior away from increasing 2mm；This requirement
It is to transport, for elimination, the physical dimension change that end cap main structure weld seam leg is big, weld contraction causes greatly
Little problem and the structure amplification quantity in advance taked, offset welding and the amount of contraction of annealing；If not
Take this measure, the problem that after causing welding, physical dimension diminishes and allowance is not enough；
The auxiliary strutting means using the compensation fixing left otic placode group of lacing wire auxiliary and auris dextra plate group can
To ensure left otic placode group and the auris dextra plate group perpendicularity relative to end plate；Use welding two simultaneously
Transport end cap, makes the bending stress phase of two transport end caps generations with the back-to-back method of attachment of lacing wire
Interaction, cancel out each other, mutually pin down suppression flexural deformation；If do not used the method, due to
The interior outside weld amount of transport end cap is different and end plate rigidity is weak, and end plate and seam can be made to produce the most curved
Song deforms and cannot use；
Step 2 implement welding step define employing little weldering amount multiple welding method complete and
Regulation welding procedure is that reducing welding deformation ensures welding quality, enters with step welding simultaneously
Capable and symmetrical is also to be that reducing welding deformation ensures welding quality；Compensate lacing wire
Interior compensation weld seam and to repay outward weld seam also average out to and welded for five times be to be to ensure to compensate lacing wire
Tong Bu due to the contraction that causes of welding with transport end cap, it is to avoid to deform and inconsistent cause torsional deformation；
To transport end cap annealing steps, step 3 requires that transport end cap still keeps back-to-back connection
State, carries out the deformation effect minimum that annealing operation can make to cause during annealing.
Accompanying drawing illustrates:
Fig. 1 is that physical dimension pre-adjusts scheme schematic diagram.
Fig. 2 is two transport back-to-back connection diagrams of end cap.
Fig. 3 is for implementing welding step schematic diagram.
Detailed description of the invention:
The present invention takes following scheme measure and step；
Physical dimension pre-adjusts scheme as it is shown in figure 1, by the diameter of bore size 2 of end plate 1
Increase 8mm, gabarit diameter dimension 3 increases 8mm；
During riveting, Basic architecture pre-adjusts scheme: group increases 5mm away from 4, interior away from 5
Add 2mm；
Riveting process and welding process follow these steps to and require to carry out:
Step one: riveting process, riveting weld width is 6-8mm, rivets fusion length 30-50
Mm, is spaced 200-300mm, and the size pre-adjusting scheme by physical dimension increases requirement riveting；
Use auxiliary strutting means: use and compensate the fixing left otic placode group 7 of lacing wire 6 auxiliary and auris dextra plate group 8；
As in figure 2 it is shown, the method using the end cap of welding two transport simultaneously, make two fortune with lacing wire 9
The back-to-back connection of defeated end cap；
Step 2: implement welding step, weld seam uses little weldering amount multiple welding method to complete, as
Shown in Fig. 3, the weldering amount average out to of all main structure weld seams has welded for five times, compensates lacing wire 6
Interior compensation weld seam 10 and repay outward weld seam 11 also average out to and welded for five times, welding every time
Order is: a seam outside weld 12, b seam inside weld 13, compensates weld seam 10, in d in c
Otic placode inside weld 14, otic placode outside weld 15 in e, f external compensation weld seam 11, in the outer otic placode of g
Weld seam 16, the outer otic placode outside weld 17 of h；K cleaning is polished, is detected a flaw and eliminate defect；Above-mentioned weldering
Meeting order a-k and repeat to complete for five times whole weldering amounts of main structure weld seam altogether, welding wants two pieces to transport
End cap is carried out with step simultaneously, and symmetrical carrying out also is wanted in the welding of every transport end cap；Other
Non-master construction joint is carried out after the 4th main structure weld seam has welded；
Step 3: transport end cap annealing steps, the transport end cap completing all to weld still keeps
Back-to-back connection status, carries out annealing operation；After annealing operation terminates, excision lacing wire 9 and benefit
Repay lacing wire 6, complete whole welding sequence.
Claims (1)
1. a 1000MW generator unit stator transport end cap welding method, is characterized in that: take
Following scheme measure and step；
1) physical dimension pre-adjusts scheme: by the diameter of bore size (2) of end plate (1)
Increase 8mm, gabarit diameter dimension (3) increases 8mm；
2) during riveting, Basic architecture pre-adjusts scheme: group increases 5mm away from (4),
Interior away from (5) increase 2mm；
3) riveting process and welding process follow these steps to and require to carry out:
Step one: riveting process, riveting weld width is 6-8mm, rivets fusion length 30-50
Mm, is spaced 200-300mm, and the size pre-adjusting scheme by physical dimension increases requirement riveting；
Use auxiliary strutting means: use and compensate the fixing left otic placode group (7) of lacing wire (6) auxiliary and the right side
Otic placode group (8)；The method using the end cap of welding two transport simultaneously, makes two with lacing wire (9)
The transport back-to-back connection of end cap；
Step 2: implement welding step, weld seam uses little weldering amount multiple welding method to complete, institute
The weldering amount average out to having main structure weld seam has welded for five times, compensates the interior compensation weldering of lacing wire (6)
Seam (10) and external compensation weld seam (11) also average out to have welded for five times, and welding is secondary every time
Sequence is: a) seam outside weld (12), b) seam inside weld (13), c) interior compensation weld seam (10),
D) otic placode inside weld (14) in, e) in otic placode outside weld (15), f) external compensation weld seam (11),
G) outer otic placode inside weld (16), h) outer otic placode outside weld (17), k) cleaning polishing, spy
Hinder and eliminate defect；Above-mentioned welding procedure a-k repeats five times altogether and completes the whole of main structure weld seam
Weldering amount, welds and wants two pieces transport end cap to carry out with step simultaneously, and the welding of every transport end cap is also
Want symmetrical carrying out；Other non-master construction joints are after the 4th main structure weld seam has welded
Carry out；
Step 3: transport end cap annealing steps, the transport end cap completing all to weld still keeps
Back-to-back connection status, carries out annealing operation；After annealing operation terminates, excision lacing wire (9) and
Compensate lacing wire (6), complete whole welding sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410718417.1A CN104439744B (en) | 2014-12-01 | 2014-12-01 | 1000MW generator unit stator transport end cap welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410718417.1A CN104439744B (en) | 2014-12-01 | 2014-12-01 | 1000MW generator unit stator transport end cap welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104439744A CN104439744A (en) | 2015-03-25 |
| CN104439744B true CN104439744B (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410718417.1A Active CN104439744B (en) | 2014-12-01 | 2014-12-01 | 1000MW generator unit stator transport end cap welding method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5384958A (en) * | 1993-02-26 | 1995-01-31 | General Motors Corporation | Method of making a torque converter assembly |
| CN1887514A (en) * | 2006-07-17 | 2007-01-03 | 四川东风电机厂有限公司 | Process of welding flow passage cover plate and frame of through-flow generator set |
| CN101337297A (en) * | 2008-08-12 | 2009-01-07 | 上海汽车改装厂有限公司 | Welding method of oil-box body for concrete pump and cover board and welding device thereof |
| CN103203556A (en) * | 2013-04-03 | 2013-07-17 | 齐齐哈尔鑫拓金属铆焊有限责任公司 | Technology for assembling and welding upper center pans and lower cover plates of center frame of railway van truck |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7819302B2 (en) * | 2004-09-30 | 2010-10-26 | The Boeing Company | Aluminum end caps ultrasonically welded to end of aluminum tube |
-
2014
- 2014-12-01 CN CN201410718417.1A patent/CN104439744B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5384958A (en) * | 1993-02-26 | 1995-01-31 | General Motors Corporation | Method of making a torque converter assembly |
| CN1887514A (en) * | 2006-07-17 | 2007-01-03 | 四川东风电机厂有限公司 | Process of welding flow passage cover plate and frame of through-flow generator set |
| CN101337297A (en) * | 2008-08-12 | 2009-01-07 | 上海汽车改装厂有限公司 | Welding method of oil-box body for concrete pump and cover board and welding device thereof |
| CN103203556A (en) * | 2013-04-03 | 2013-07-17 | 齐齐哈尔鑫拓金属铆焊有限责任公司 | Technology for assembling and welding upper center pans and lower cover plates of center frame of railway van truck |
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| Publication number | Publication date |
|---|---|
| CN104439744A (en) | 2015-03-25 |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |