CN104439744A - Welding method for transportation end cap of 1000MW generator stator - Google Patents

Welding method for transportation end cap of 1000MW generator stator Download PDF

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CN104439744A
CN104439744A CN 201410718417 CN201410718417A CN104439744A CN 104439744 A CN104439744 A CN 104439744A CN 201410718417 CN201410718417 CN 201410718417 CN 201410718417 A CN201410718417 A CN 201410718417A CN 104439744 A CN104439744 A CN 104439744A
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welding
weld
transport
step
cap
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CN 201410718417
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Chinese (zh)
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CN104439744B (en )
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梁洪涛
邱希亮
佟本华
李滨
乔宏来
温海明
董英贺
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哈尔滨电机厂有限责任公司
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02Processes 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
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHER TREATMENTS
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/50Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
    • B23K2101/36

Abstract

The invention provides a welding method for a transportation end cap of a 1000MW generator stator. Through standards and requirements for welding sequence, fillet weld size control, riveting size control, the setting of an auxiliary tie bar and stress release treatment, the requirement of form and location tolerance of welding is guaranteed, welding deformation is controlled, the welding line and structural strength of the transportation end cap reach the requirement of transportation safety, the requirement of assembly application is met, and the transportation safety of the 1000MW generator stator is guaranteed.

Description

10OOMW发电机定子运输端盖焊接方法 Transport 10OOMW generator stator end cap welding process

[0001] 技术领域:本发明涉及一种1000MW发电机定子运输端盖焊接方法。 [0001] Technical Field: The present invention relates to a transport 1000MW a generator stator end cap welding process.

[0002] 背景技术:1000丽级超超临界汽轮发电定子运输超重超限程度高,运输及其困难,运输问题上升为制约瓶颈,如论文《1000MW汽轮发电机定子铁路运输前准备工作》(文章编号1005-006X (2013) 04-0057-02)、《DQ45型钳夹式货车端盖方式运输1000MW发电机定子试验研宄》(文章编号1001-4632(2011)04-0109-08)对此问题都有详细论述; [0002] Background: 1000 Laguna ultra supercritical turbo-generator stators transport high degree of overweight overrun, and transportation difficulties, transportation issues rose to the bottleneck, such as the paper "before 1000MW turbogenerator stator rail transport preparatory work" (article number 1005-006X (2013) 04-0057-02), "DQ45 Schnabel truck cap transported 1000MW generator stator test study based" (article ID 1001-4632 (2011) 04-0109-08) We have discussed this issue in detail;

[0003] 1000MW级超超临界汽轮发电机设计面临的问题是其定子的尺寸及重量超过运输极限,在内陆的运输成为制约瓶颈问题。 Problem [0003] 1000MW ultra-supercritical steam turbine generator design facing the stator size and weight limit of more than transportation, inland transportation has become the bottleneck problem.

[0004] 在铁路运输行业,大型汽轮发电机定子这类大型货物运输属于长大货物运输,运输车辆结构形式有较强的针对性,合适的特种车辆是运输能否实施的前提,而这些车辆也是针对需求所开发的,汽轮发电机定子断面阔大,自身刚强度高,适合采用钳夹车运输。 [0004] In the rail transport industry, large turbo - generators belonging to such large-scale transport of goods grew transport of goods, transport vehicles have a structure in the form of highly targeted, appropriate special vehicles can transport is a prerequisite for the implementation of these demand for vehicles is developed, turbogenerator stator sections vast, high self-strong, suitable for clamping cars.

[0005] 铁路的建筑接近限界、曲线半径、轴载荷、道桥活载荷、车辆设计规范等技术条件制约了大车的设计,使车辆的承载能力不能无限制的提高,一些特定长度的桥涵成为过桥限制门限,使车辆与货物的总重最大允许值被限定,在此条件约束下,减重成为发电机定子及车辆的共同问题; [0005] The construction of the railway close delimited, curve radius, the axle load, bridge live load, vehicle design specifications and other technical conditions restrict the design of the cart, so that the carrying capacity of the vehicle can not be increased unlimited, culverts become a certain length bridge limit threshold, so that the total weight of the vehicle and the maximum allowable value of the goods to be defined, under this constraint condition, weight reduction has become a common problem of the generator stator of the vehicle;

[0006] 1000MW发电机定子整体铁路运输方案采用运输端盖形式的运输接口部件,运输端盖是钳夹车运输1000MW发电机定子的关键部件,关系到车辆的完整性,负责静力及运输冲击力的传输,由钳夹梁销孔及压柱施加的巨大集中载荷要通过运输接口部件传递到机座外皮等部位;由于结构重量被严格限制,结构复杂,如果焊接步骤与方法不当,极易造成结构尺寸超差、焊缝及结构强度达不到运输安全要求等问题,产生无法装配运用或造成运输安全隐患。 [0006] 1000MW generator stator overall rail transport program uses transport interface components cover forms of transport, transport cover is a key component of the generator stator clamp car transport 1000MW, related to the integrity of the vehicle, in charge of transport and static shock force transmission great concentrated loads applied by the jaws and the pressing pin holes beam to pass through the column to the base member transport interfaces and other parts of the skin; is strictly limited due to the weight of the structure, complex structure, if the welding step and inappropriate method, easily cause structural difference sizes, welds and structural strength of the problem can not transport safety requirements, the assembly can not produce or use of safety problems caused by transport.

[0007] 发明内容:本发明的目的是提供一种1000MW发电机定子运输端盖焊接方法,通过对焊接顺序、焊角尺寸控制、铆接尺寸控制、辅助拉筋的设置、消除应力处理的规范与要求,达到保证焊接形位公差要求、控制焊接变形、使运输端盖的焊缝及结构强度达到运输安全要求,满足装配运用要求,保证1000MW发电机定子运输安全。 [0007] SUMMARY OF THE INVENTION: The purpose of the present invention is to provide a transport 1000MW a generator stator cover joining method for welding sequence, fillet size control, sizing control caulking, reinforcement of the auxiliary set, to eliminate stress treatment and norms requirements, to ensure the welding shape and position tolerances, welding deformation control, the structural strength of the weld and the end cap reaches the transport transport safety requirements, the use of the assembly to meet the requirements to ensure safe transport 1000MW generator stator.

[0008] 本发明的技术方案为:一种1000MW发电机定子运输端盖焊接方法,其特征是:采取下列方案措施及步骤; [0008] The aspect of the present invention is: one kind of transportation 1000MW generator stator end cap welding method, characterized in that: the step of taking the following measures and programs;

[0009] 结构尺寸预先调整方案:将端板的内孔直径尺寸增加8mm、外廓直径尺寸增加8mm ; [0009] Structure predetermined size adjustment programs: the increase in pore diameter of the end plate of 8mm, 8mm diameter increases outline;

[0010] 铆接时基本结构框架预先调整方案:组距增加5mm,内距增加2mm ; [0010] The basic structural frame caulked program adjusted in advance: group increased from 5mm, to increase the distance 2mm;

[0011] 铆接过程及焊接过程按下列步骤及要求进行: [0011] riveting process and the welding process and requires the following steps:

[0012] 步骤一:铆接过程,铆接焊缝宽度为6-8mm,铆接焊缝长度30_50mm,间隔200-300mm,按结构尺寸预先调整方案的尺寸增加要求铆接;采用辅助支撑措施:采用补偿拉筋辅助固定左耳板组及右耳板组;采用同时焊接的两只运输端盖方法,用拉筋使两只运输端盖背对背连接; [0012] Step a: riveting process, weld width of 6-8mm caulking, the caulking weld length 30_50mm, spaced 200-300mm, according to the structure size to increase the program size adjusted beforehand in claim caulking; auxiliary supporting measures adopted: use of compensatory reinforcement auxiliary fixing plate right ear and the left plate group group; simultaneous use of two transport welding cap, cap with tie bars so that two transport connected back to back;

[0013] 步骤二:实施焊接步骤,焊缝采用小焊量多次焊接方法完成,所有主结构焊缝的焊量平均为五次焊接完成,补偿拉筋的内补偿焊缝及外偿焊缝也平均为五次焊接完成,每次焊接的次序为:a止口外焊缝,b止口内焊缝,c内补偿焊缝,d内耳板内焊缝,e内耳板外焊缝,f外补偿焊缝,g外耳板内焊缝,h外耳板外焊缝;k清理打磨、探伤并消除缺陷;上述焊接次序ak共重复五次完成主结构焊缝的全部焊量,焊接要两件运输端盖同时同步骤进行,每件运输端盖的焊接也要左右对称进行;其他非主结构焊缝在第四次主结构焊缝焊接完成后进行; [0013] Step two: the welding step, welding seam with a small amount a plurality of times to complete the welding process, welding seam amounts of all primary structure of an average of five welding is completed, the compensation of the compensation reinforcement and an outer weld seam compensation the average of five also welding is completed, each weld sequence is: a stop extraoral outer weld, the weld rabbet b, c compensation within the weld, the weld plate d ear, inner ear plate welds E, f the compensations weld, the weld plate concha g, h auricle outer weld plate; K polished clean, detection and elimination of defects; ak of the welding sequence were repeated five times to complete a full amount of the main structure of the welding seam, the welding carriage to two ends simultaneously with the step of the cover, each cap welded transport should be symmetrical; other non-primary structure after the fourth weld seam welded to complete the main structure;

[0014] 步骤三:运输端盖退火步骤,完成全部焊接的运输端盖依然保持背对背连接状态,进行退火工序;退火工序结束后,切除拉筋及补偿拉筋,完成全部焊接工序。 [0014] Step Three: Transport cap annealing steps, the transport of all welded cap remains connected back to back state, the annealing step; after the annealing step, removal of reinforcement and reinforcement compensation, complete all the welding process.

[0015] 技术效果:结构尺寸预先调整方案将端板的内孔直径尺寸增加8mm、外廓直径尺寸增加8mm,组距增加5mm,内距增加2mm ;该要求是为消除运输端盖主结构焊缝焊角大、焊接收缩大引起的结构尺寸变小的问题而采取的结构预先放大量,抵消焊接及退火的收缩量;如不采取该措施,会造成焊接后结构尺寸变小以及加工余量不足的问题; [0015] A technical effect of: frame size is adjusted in advance scheme bore diameter of the end plate increases 8mm, increasing the diameter of the outer contour 8mm, group increased from 5mm, to increase the distance 2mm; The requirement for the elimination of the main transport cap weld structure seam welding angle is large, the structure of smaller size weld shrinkage problems caused by large structures previously taken amplification amount, the amount of shrinkage offset welding and annealing; this measure is not taken, will cause the welded structure size becomes small and the allowance the problem of insufficient;

[0016] 采用补偿拉筋辅助固定左耳板组及右耳板组的辅助支撑措施可以保证左耳板组及右耳板组相对于端板的垂直度;采用同时焊接的两只运输端盖焊用拉筋背对背连接方法是形成为两只运输端盖产生的弯曲应力相互作用、相互抵消、相互牵制抑制弯曲变形;如不采用该方法,由于运输端盖的内外焊量不同且端板刚度弱,会使端板及止口产生严重弯曲变形而无法使用; [0016] The auxiliary fixing compensation reinforcement plate group and the left ear auxiliary supporting plate group measures ensure the right ear and the left plate group with respect to the vertical plate group of the end plate; using simultaneously two end caps welded transport connected back to back with the weld reinforcement is formed as a bending stress interactions two transport cap generated, cancel each other, each contain suppress bending deformation; if not using this method, due to the different amounts inside and outside the transport cap and welding the end plate stiffness weak, the end plate and the spigot makes severe bending deformation can not be used;

[0017] 步骤二实施焊接步骤规定了采用小焊量多次焊接方法完成以及规定焊接次序在于减小焊接变形保证焊接质量,对焊接同时同步骤进行以及左右对称进行也是在于减小焊接变形保证焊接质量;补偿拉筋的内补偿焊缝及外偿焊缝也平均为五次焊接完成是在于保证补偿拉筋与运输端盖由于焊接引起的收缩同步,避免变形不一致造成扭曲变形; [0017] Step two welding step embodiment provides a plurality of times with a small amount of solder and complete the soldering method of soldering a predetermined order to ensure that welding quality welding deformation is reduced, simultaneously with the step of welding and also for symmetrical to ensure the welding is to reduce welding deformation quality; compensated in compensation reinforcement and an outer weld seam is also compensation for the average of five to ensure that the weld is completed with the transport cap stretch compensation due to the shrinkage caused by simultaneous welding, to avoid distortion caused by deformation of inconsistencies;

[0018] 步骤三对运输端盖退火步骤要求运输端盖依然保持背对背连接状态,进行退火工序能够使退火时引起的变形影响最小。 Effect of minimum deformation caused when the [0018] Step three transport cap annealing step requires transport cap remains connected back to back state, it can be annealed the annealing step.

附图说明 BRIEF DESCRIPTION

: :

[0019] 图1为结构尺寸预先调整方案示意图。 [0019] FIG. 1 is a schematic structural predetermined size adjustment programs.

[0020] 图2为两只运输端盖背对背连接示意图。 [0020] FIG. 2 is a schematic view of two transport cap connected back to back.

[0021 ] 图3为实施焊接步骤示意图。 [0021] FIG. 3 is a schematic view of the welding step.

具体实施方式 detailed description

: :

[0022] 本发明采取下列方案措施及步骤; [0022] The embodiment of the present invention takes the following measures and steps;

[0023] 结构尺寸预先调整方案如图1所示,将端板I的内孔直径尺寸2增加8mm、外廓直径尺寸3增加8mm ; [0023] The frame size is adjusted in advance as shown in Scheme 1, the bore diameter of the end plate of the I 2 increases 8mm, the outer diameter dimension of the profile 3 increases 8mm;

[0024] 铆接时基本结构框架预先调整方案:组距4增加5mm,内距5加2mm ; [0024] The basic structural frame caulked program adjusted in advance: group increased from 4 5mm, from the 5 plus 2mm;

[0025] 铆接过程及焊接过程按下列步骤及要求进行: [0025] riveting process and the welding process and requires the following steps:

[0026] 步骤一:铆接过程,铆接焊缝宽度为6-8mm,铆接焊缝长度30_50mm,间隔200-300mm,按结构尺寸预先调整方案的尺寸增加要求铆接;采用辅助支撑措施:采用补偿拉筋6辅助固定左耳板组7及右耳板组8 ;如图2所示,采用同时焊接的两只运输端盖方法,用拉筋9使两只运输端盖背对背连接; [0026] Step a: riveting process, weld width of 6-8mm caulking, the caulking weld length 30_50mm, spaced 200-300mm, according to the structure size to increase the program size adjusted beforehand in claim caulking; auxiliary supporting measures adopted: use of compensatory reinforcement group 6 auxiliary fixing plate 7 and the left ear right ear plate group 8; 2, using two methods of transport cap is welded simultaneously with the tie bars so that two transport cap 9 connected back to back;

[0027] 步骤二:实施焊接步骤,焊缝采用小焊量多次焊接方法完成,如图3所示,所有主结构焊缝的焊量平均为五次焊接完成,补偿拉筋6的内补偿焊缝10及外偿焊缝11也平均为五次焊接完成,每次焊接的次序为:a止口外焊缝12,b止口内焊缝13,c内补偿焊缝10,d内耳板内焊缝14,e内耳板外焊缝15,f外补偿焊缝11,g外耳板内焊缝16,h外耳板外焊缝17也清理打磨、探伤并消除缺陷;上述焊接次序ak共重复五次完成主结构焊缝的全部焊量,焊接要两件运输端盖同时同步骤进行,每件运输端盖的焊接也要左右对称进行;其他非主结构焊缝在第四次主结构焊缝焊接完成后进行; [0027] Step two: the welding step, welding seam with a small amount of multiple welding process is completed, as shown in Figure 3, the main structure of the welding amounts of all five welds average welding is completed, the stretch compensation the compensation 6 10 and an outer weld seam 11 is also compensated average of five soldering, welding each order are: a stop estuary weld 12, the weld b spigot 13, the weld seam 10 to compensate c, d inner ear plate welding seam 14, the outer ear panel e weld 15, f compensating outer weld 11, the weld plate concha g 16, h auricle outer plate 17 is also polished clean weld, detection and elimination of defects; above was repeated five times total weld sequence ak complete primary structure of all the amount of welding seam, the welding to two end caps simultaneously with the transport step, the transport members each have bilaterally symmetrical end cap for welding; other non-master structure in the fourth main seam weld structure after completion;

[0028] 步骤三:运输端盖退火步骤,完成全部焊接的运输端盖依然保持背对背连接状态,进行退火工序;退火工序结束后,切除拉筋9及补偿拉筋6,完成全部焊接工序。 [0028] Step Three: Transport cap annealing steps, the transport of all welded cap remains connected back to back state, the annealing step; after the annealing step, removal of reinforcement reinforcement compensation 6 and 9, the completion of all the welding process.

Claims (1)

  1. 1.一种100MW发电机定子运输端盖焊接方法,其特征是:采取下列方案措施及步骤; 1)结构尺寸预先调整方案:将端板⑴的内孔直径尺寸⑵增加8mm、外廓直径尺寸(3)增加8mm ; 2)铆接时基本结构框架预先调整方案:组距⑷增加5mm,内距(5)增加2mm ; 3)铆接过程及焊接过程按下列步骤及要求进行: 步骤一:铆接过程,铆接焊缝宽度为6-8mm,铆接焊缝长度30-50mm,间隔200-300mm,按结构尺寸预先调整方案的尺寸增加要求铆接;采用辅助支撑措施:采用补偿拉筋(6)辅助固定左耳板组(7)及右耳板组(8);采用同时焊接的两只运输端盖方法,用拉筋(9)使两只运输端盖背对背连接; 步骤二:实施焊接步骤,焊缝采用小焊量多次焊接方法完成,所有主结构焊缝的焊量平均为五次焊接完成,补偿拉筋(6)的内补偿焊缝(10)及外补偿焊缝(11)也平均为五次焊接完成,每次焊接的次序为:a)止口外焊 A transport 100MW generator stator end cap welding method, characterized in that: measures and steps taken following scheme; 1) size of structural adjustment programs in advance: The increase of the end plate hole diameter ⑴ ⑵ 8mm, the outer diameter dimension of the profile (3) increased 8mm; 2) caulked basic structural frame advance adjustment scheme: group from ⑷ increased 5mm, the distance (5) increases 2mm; 3) riveting process and the welding process the following steps and requirements: step 1: the riveting caulking weld width of 6-8mm, caulking weld length 30-50mm, spaced 200-300mm, according to the structure size to increase the program size adjusted beforehand in claim caulking; auxiliary supporting measures adopted: use of compensatory reinforcement (6) auxiliary fixing left lug plate group (7) and the right ear plate group (8); at the same time using the method of welding two transport cap, with reinforcement (9) is connected back to back so that two transport cap; step two: the welding step, the weld welding a plurality of times with a small amount of welding process is completed, the amount of welding weld all the main structure of an average of five welding is completed, the compensation reinforcement (6) of the compensation weld seam (10) and an outer weld compensation (11) is also on average five welding is completed, each weld sequence is: a) stop welding extraoral (12),b)止口内焊缝(13),c)内补偿焊缝(10),d)内耳板内焊缝(14),e)内耳板外焊缝(15),f)外补偿焊缝(11),g)外耳板内焊缝(16),h)外耳板外焊缝(17),k)清理打磨、探伤并消除缺陷;上述焊接次序ak共重复五次完成主结构焊缝的全部焊量,焊接要两件运输端盖同时同步骤进行,每件运输端盖的焊接也要左右对称进行;其他非主结构焊缝在第四次主结构焊缝焊接完成后进行; 步骤三:运输端盖退火步骤,完成全部焊接的运输端盖依然保持背对背连接状态,进行退火工序;退火工序结束后,切除拉筋(9)及补偿拉筋(6),完成全部焊接工序。 (12), b) stop the welds (13), the c) compensation weld (10), d) weld plate inner ear (14), e) an outer weld ear panel (15), f) the compensations weld seam (11), g) the concha weld plate (16), h) an outer weld auricle plate (17), k) polished clean, detection and elimination of defects; ak of the welding sequence were repeated five times to complete the main structure of the welding all the amount of seam welding, the welding to two end caps simultaneously with the transport step, the transport members each have bilaterally symmetrical end cap for welding; other non-primary structure after the fourth weld seam welded to complete the main structure; step three: transport cap annealing steps, the transport of all welded cap remains connected back to back state, the annealing step; after the annealing step, removal of lacing (9) and compensation reinforcement (6), to complete the entire welding process.
CN 201410718417 2014-12-01 2014-12-01 Transport 1000mw generator stator end cap welding process CN104439744B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
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
US20060071054A1 (en) * 2004-09-30 2006-04-06 Bolser David R Aluminum end caps ultrasonically welded to end of aluminum tube
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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
US20060071054A1 (en) * 2004-09-30 2006-04-06 Bolser David R Aluminum end caps ultrasonically welded to end of aluminum tube
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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