CN103331527B - The erection welding method of large footpath finished product flange - Google Patents
The erection welding method of large footpath finished product flange Download PDFInfo
- Publication number
- CN103331527B CN103331527B CN201210550705.1A CN201210550705A CN103331527B CN 103331527 B CN103331527 B CN 103331527B CN 201210550705 A CN201210550705 A CN 201210550705A CN 103331527 B CN103331527 B CN 103331527B
- Authority
- CN
- China
- Prior art keywords
- flange
- welding
- cylinder
- cylindrical shell
- finished product
- 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.)
- Active
Links
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The present invention relates to the erection welding method of a kind of large footpath finished product flange, comprise the following steps of carrying out with this: technique support is set in cylindrical shell and stands up hanger, cylindrical shell stands up, flange is lifted on flange mold, by Barrel hoisting on flange, tack welding, Cylinder assembly, conic tube assembly is lifted into cylinder assembly assembling on turning rolls with described, Circumferential Welds In Cylinders welds.Advantage of the present invention is: processed when diameter reaches the flange supplied materials between 4m ~ 7m and put in place, do not had allowance, but utilizes adjustment welding sequence, the negative camber of flange is controlled in the margin of tolerance.Simplify processing technology, reduce production cost, improve production efficiency, shorten and make the duration.
Description
Technical field
The present invention relates to the welding of a kind of wind-powered electricity generation pile tube cylindrical shell and flange, and ensure the flatness of flange face and the technical method of end face of flange and tubular axis perpendicularity, for by wind-powered electricity generation conic tube assembly, isometrical cylinder assembly and assemble between flange, weld.
Background technology
Clean sustainable energy is future source of energy developing direction, and wind-power electricity generation is first-selected clean energy resource, and Oversea wind power generation is main body especially, and offshore wind farm generating set main body structure is made up of foundation pile, blower fan tower barrel and generating set etc.All Flange joint is passed through between blower fan tower barrel and foundation pile, between generating set and tower cylinder, flange diameter generally between 4m ~ 7m, thickness is generally between 80mm ~ 20mm, flange has become to bear the critical piece of tower cylinder and generating set, and most of flange is forge piece.The main holding capacity of flange has: wind-force acts on thrust on impeller, moment of torsion moment of flexure, the vibrations of generating set and the swing of stressed change.
Intact in order to ensure so large-sized two flange contact, after foundation pile or tower cylinder complete, flange face requires " introversion is put down " outward, can give connected high-strength bolt corresponding pretightning force, therefore do not allow in manufacturing process to occur turning inside-out phenomenon during installation.End face of flange integral smoothness≤2mm, end face and tubular axis perpendicularity deviation≤2mm, end face introversion amount is between 0 ~ 1.5mm.
Wind Power Project put allowance in advance by flange in the past, and after flange and barrel soldering complete, plane on overall processing flange, ensures flange face flatness, and flange face and tubular axis perpendicularity.Its shortcoming is: processing technology is complicated, adds production cost, reduces production efficiency, extends and makes the duration, and higher to equipment requirement.
Summary of the invention
The object of the invention is to provide a kind of erection welding method of wind-powered electricity generation finished product flange, and to solve the processing technology complexity that prior art exists, production cost is high, and production efficiency is low, makes problem long in time limit.
Technical scheme of the present invention is: comprise following content:
(1) group is to the guarantee of cylinder roundness: use specific equipment to ensure by the port circularity of group to cylindrical shell two ends;
(2) guarantee of planeness of flange: the welding ends of flange is placed on dedicated platform upward, the uneven place of flange ensures Flange Plane flatness by increasing pad, after flatness is adjusted to the right place, fixes with bolt and flange mold;
(3) guarantee of tubular axis and Flange Plane perpendicularity: be grouping with flange under tubular axis plumbness, the gap of adjustment barrel port and flange craft port and unfitness of butt joint, thus ensure tubular axis and Flange Plane perpendicularity;
(4) cylindrical shell and flange adjust rear positioning welding, require: welding 100mm, interval 200mm; Carbon dioxide gas arc welding bottoming welding outside weld seam;
(5) Cylinder assembly: after the cylinder assembly of backing welding connector drum 2 and flange 8 is stood up, be placed on turning rolls 4;
(6) conic tube assembly 1 is lifted on turning rolls 4 and assembles with described cylinder assembly;
(7) Circumferential Welds In Cylinders welding: by cylindrical shell 2 two ends and the girth welding between conic tube assembly 1 and flange 8.
Advantage of the present invention is: processed during flange supplied materials and put in place, do not had allowance, but utilizes adjustment welding sequence, the negative camber of flange is controlled in the margin of tolerance.Simplify processing technology, reduce production cost, improve production efficiency, shorten and make the duration.
Accompanying drawing explanation
Fig. 1 is the axial sectional view that conic tube assembly that the present invention welds is equipped with technique support.
Fig. 2 is the axial sectional view that cylindrical shell that the present invention welds is equipped with technique support.
Fig. 3 is the end face structure schematic diagram that described conic tube assembly or cylindrical shell are arranged on turning rolls.
Fig. 4 is the axial sectional view of flange mold of the present invention.
Fig. 5 is the top view of Fig. 4.
Fig. 6 is the schematic diagram of hoisting flange.
Fig. 7 is the top view of flange of the present invention.
The structural representation of the bait adopted when Fig. 8 is hoisting flange.
Fig. 9 is to the process schematic on flange by Barrel hoisting.
Figure 10 is the schematic diagram after Barrel hoisting to flange completes.
Figure 11 is the enlarged drawing (sectional view after butting grooves and backing welding) at P place in Figure 10.
Figure 12 is the enlarged drawing (cross-sectional view of flange) at M place in Figure 10.
Figure 13 is the schematic diagram be positioned over by cylindrical shell on turning rolls.
Figure 14 be conic tube assembly is lifted on turning rolls and with Cylinder assembly after schematic diagram.
Figure 15 is Circumferential Welds In Cylinders welding schematic diagram.
Detailed description of the invention
See Fig. 1 ~ Figure 15, the welding method of wind power foundation stake finished product flange of the present invention, in order to meet tolerance, avoid occurring turning inside-out phenomenon, make flange assembling Special mould, and formulated effective flange erection welding process program, the end face negative camber of flange 8 has been controlled at 0.3 ~ 0.5mm, upper integral plane flatness≤1.5mm, pile body axis and end face of flange perpendicularity deviation are no more than 2mm.。
When flange 8 and cylindrical shell 2 are grouping, must carry out on platform in the group that rigidity is larger, platform plane degree≤0.5mm.Flange 8 is machined piece, adopt machined to complete equally with cylindrical shell 2 two ends that flange 8 docks, during adjustment, the gap between flange 8 with cylindrical shell 2 is adjusted to consistent, ensure that welding contracted quantity is consistent, after the some points of flange 8 circumference equal dividing, record the Flange Plane degrees of data of each point.
In welding process, can with reference to the data of monitoring point, adjustment welding number of channels, ensure that the flatness of flange postwelding.In weld seam welding process between flange 8 and cylindrical shell 2, by monitoring flange Internal and external cycle flatness data, adjustment weld seam welding sequence, controls the negative camber of flange 8 in the margin of tolerance.
Concrete technological process is as follows:
1, cylindrical shell increases technique support:
1.1 according to Fig. 1 and Fig. 2 be shown in conic tube assembly 1 and the mounting process support 11 and 21 respectively of (isometrical) cylinder 2 two ends.Described technique support is by central plate 211, locating piece 212 and strut 213, and central plate 211 is located at the center of cylindrical shell, and 6 locating pieces 212 are uniformly distributed along the circumference inner peripheral surface in cylindrical shell, every a positioning block 212 be connected a strut 213 between central plate 211.
Require: before technique support is installed and after installing, need the circularity checking cylindrical shell, requirement≤3mm.
2, flange 8 dimensional measurement: be placed on horizontal moulding bed by flange 8, measures its circularity, end face negative camber, end face flatness.
3, the adjustment (see Fig. 4-Figure 12) of flange mold 6:
3.1 adjustment flange molds 6 and the integral smoothness of flange 8 fitting surface, require flatness≤1.5mm.
3.2 pad between flange mold 6 and ground.
As shown in fig. 4-5, described flange mold 6 comprises ring dish 61, cylinder 62, riser 63, four-bladed vane 64, and be connected with the riser of cylinder with multiple radial direction between two ring dishes setting up and down, riser is uniform along cylinder; Four-bladed vane is connected in ring dish; The multiple guide plate 7 of neighboring uniform welding of superincumbent ring dish.
4, hoisting flange 8:
4.1, according to shown in Fig. 6-Fig. 7, are connected 4 hangers 9 by steel wire rope with shackle 52 with suspension hook 5, are lifted on flange mold 6 by flange 8, and the welding ends 81 making flange 8 upward.Four comparatively macropore contrapositions on four suspension centres and flange mold.
Described hanger 9 is made up of shackle plate 91 and bolt 92, is provided with lifting hole(eyelet) 912 for being connected with shackle 52 on the top of shackle plate 91; Being provided with groove 911 in the bottom of shackle plate 91 for the nut of stud bolt 92 is welded to each other.During lifting, bolt 92 is inserted in the through hole 83 of flange 8, use fastening nuts.
5, flange adjustment: flange 8 is lifted into after on flange mold 6, the overall leveling of adjustment flange 8 and circularity, and measurement data, flange and flange mold are tightened fixing by qualified rear bolt.
6, Barrel hoisting:
6.1 according to being equipped with four steel wire ropes as shown in Figure 9, connects 4 points that 4 10t steel plate pincers 52 clamp cylindrical shell 2 upper end, be lifted on flange 8 by cylindrical shell 2.
The plane verticality of 6.2 adjustment cylindrical shells 2 and the unfitness of butt joint of flange 8, the axis of cylindrical shell 2 and flange 8.Require: unfitness of butt joint≤2mm, misalignment of axe≤3mm.
6.3 according to the weld seam between the welding procedure specification (WPS) positioning welding flange 811 ratified and cylindrical shell 2, requires: welding 100mm, interval 200mm.
6.4 as shown in figure 11 between cylindrical shell 2 with flange 811 bottoming weld.
Before 6.5 welderings, welding process and postwelding all need pile body Linearity surveying.
7, Cylinder assembly:
Cylindrical shell 2 stands up rear (axially transferring level to) by 7.1, is placed on turning rolls 4, by the weld gap between adjustment conic tube assembly 1 and cylindrical shell 2 and unfitness of butt joint, ensures Flange Plane and conic tube assembly 1 axis verticality≤1.5mm.
Conic tube assembly 1 to be lifted on conic tube turning rolls and to assemble (Figure 13-Figure 15) with cylinder assembly by 7.2.Described turning rolls 4 is fixed on the built-in fitting of ground; This turning rolls 4 comprises at least two pairs of cylindrical shell rollers 41 for supporting cylindrical shell 2, at least two pairs of conic tube rollers 42 of cone of support cylinder assembly 1, and for propping up the gear wheel 43 of conic tube assembly 1 bigger diameter end.
8, Circumferential Welds In Cylinders welding: with circular seam welding device 19 by cylindrical shell 2 two ends with the circumferential weld 18(between conic tube assembly 1 and flange 8 see Figure 15) weld (interior external welding, belongs to routine techniques).
Claims (6)
1. an erection welding method for large footpath finished product flange, is characterized in that, comprise the following steps:
(1) group is to the guarantee of cylinder roundness: in conic tube assembly and the mounting process support respectively of cylinder two ends, ensure to be no more than 3mm by the port circularity of group to cylindrical shell two ends;
(2) guarantee of planeness of flange: the welding ends of flange is placed on upward on flange mold, the uneven place of flange ensures Flange Plane flatness by increasing pad, make its flatness be no more than 1.5mm, after flatness is adjusted to the right place, with bolt, flange and flange mold are fixed;
(3) guarantee of tubular axis and Flange Plane perpendicularity: be grouping with flange under cylinder axes normal state, the gap of adjustment cylinder port and flange craft port and unfitness of butt joint, unfitness of butt joint is no more than 2mm, misalignment of axe is no more than 3mm, thus ensures cylinder axis and Flange Plane perpendicularity;
(4) cylindrical shell and flange adjust rear positioning welding, require: welding 100mm, interval 200mm; Outside weld seam, adopt carbon dioxide gas arc welding bottoming to weld;
(5) Cylinder assembly: after cylinder assembly backing welding being connected cylinder and flange stands up, be placed on turning rolls;
(6) be lifted into by conic tube assembly on turning rolls and assemble with the cylinder assembly in described step (5), adjustment conic tube assembly and gap, cylinder abutment joint place and unfitness of butt joint, guarantee end face of flange and tubular axis perpendicularity are no more than 1.5mm;
(7) Circumferential Welds In Cylinders welding: by the girth welding of cylinder two ends respectively and between conic tube assembly and flange.
2. the erection welding method of large footpath according to claim 1 finished product flange, is characterized in that:
Described technique support comprises central plate, locating piece and strut, and central plate is located at the center of cylindrical shell, and multiple locating piece is uniformly distributed along the circumference at the inner peripheral surface of cylindrical shell, every a positioning block be connected a strut between central plate.
3. the erection welding method of large footpath according to claim 2 finished product flange, is characterized in that:
Described flange mold comprises ring dish, cylinder, riser, four-bladed vane, and be connected with the riser of cylinder with multiple radial direction between two ring dishes setting up and down, riser is uniform along cylinder; Four-bladed vane is connected in ring dish; The multiple guide plate of neighboring uniform welding of superincumbent ring dish.
4. the erection welding method of large footpath according to claim 3 finished product flange, is characterized in that:
The outside of described flange one end is provided with flange as welding ends, is provided with butting grooves in the inner side and outer side on the top of this flange; Be provided with the butting grooves with this butting grooves same types at the welding ends of cylinder, and slope type and steel plate thickness adapt.
5. the erection welding method of large footpath according to claim 4 finished product flange, is characterized in that:
In described step (4), after some for circumference of flange decile points, record the data of each some planeness of flange; In welding process, with reference to the data of monitoring point, adjustment welding number of channels, ensure that the flatness of flange postwelding; In weld seam welding process between flange and cylinder, by monitoring Flange Plane Internal and external cycle flatness data, adjustment weld seam welding sequence, controls the negative camber of flange postwelding in the margin of tolerance.
6. the erection welding method of large footpath according to claim 1 finished product flange, is characterized in that:
Turning rolls in described step (6) and ground are fixed, and turning rolls roller linearity deviation is no more than 1mm; This turning rolls comprises at least two pairs of cylindrical shell rollers for support cylinder body, for supporting at least two pairs of conic tube rollers of conic tube assembly, and for propping up the gear wheel of conic tube assembly bigger diameter end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210550705.1A CN103331527B (en) | 2012-12-18 | 2012-12-18 | The erection welding method of large footpath finished product flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210550705.1A CN103331527B (en) | 2012-12-18 | 2012-12-18 | The erection welding method of large footpath finished product flange |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103331527A CN103331527A (en) | 2013-10-02 |
| CN103331527B true CN103331527B (en) | 2015-08-12 |
Family
ID=49239767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210550705.1A Active CN103331527B (en) | 2012-12-18 | 2012-12-18 | The erection welding method of large footpath finished product flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103331527B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290715B (en) * | 2014-06-19 | 2017-08-25 | 上海振华重工(集团)股份有限公司 | Conic tube and the assembling of straight barrel circular arc flange and machining manufacture |
| CN104084771B (en) * | 2014-07-06 | 2016-04-06 | 山西汾西重工有限责任公司 | The processing technology of the aluminium alloy thin-walled cylinder of destressing bullet curve shape |
| CN104625446B (en) * | 2014-12-15 | 2017-06-30 | 湖北三江航天红阳机电有限公司 | One kind rolling volume cone cylinder part pairing welding method |
| CN105817783A (en) * | 2016-05-27 | 2016-08-03 | 四川蓝星机械有限公司 | Butt-jointing and assembly welding method of cone cylinders |
| CN107322173A (en) * | 2017-08-28 | 2017-11-07 | 南通振华重型装备制造有限公司 | A kind of high-efficiency welding method of the high-strength steel flanges of S460NL |
| CN108637594A (en) * | 2018-03-30 | 2018-10-12 | 南通振华重型装备制造有限公司 | A kind of true flange production method of supporting leg |
| CN108890167A (en) * | 2018-09-19 | 2018-11-27 | 张化机（苏州）重装有限公司 | The manufacture craft of large-scale tower cylinder |
| CN111468896A (en) * | 2020-04-13 | 2020-07-31 | 上海妙城智能科技有限公司 | Process for replacing flange on wind tower foundation ring |
| CN112518243A (en) * | 2020-11-23 | 2021-03-19 | 江苏海力海上风电装备制造有限公司 | Novel manufacturing process of long and narrow thick plate transition section of wind power tower |
| CN113814641B (en) * | 2021-11-01 | 2024-07-05 | 内蒙古特变电工能源装备有限公司 | Special flange and tower section assembly machine for manufacturing wind power tower barrel and method for applying special flange and tower section assembly machine |
| CN113998323B (en) * | 2021-11-01 | 2022-11-25 | 上海锅炉厂有限公司 | Outer cylinder structure, inner support mounting device thereof and manufacturing process method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201988880U (en) * | 2011-04-19 | 2011-09-28 | 天津市诚睿缘金属制品有限公司 | Molding tooling for hub supporting frame of wind-driven generator with ribbed plate reinforcing structure |
| CN102350606A (en) * | 2011-09-07 | 2012-02-15 | 无锡市创新化工设备有限公司 | Supporting platform used for splicing large flanges |
| CN102615445A (en) * | 2012-04-25 | 2012-08-01 | 常熟市虞华真空设备科技有限公司 | Welding technique for flange and seal head |
-
2012
- 2012-12-18 CN CN201210550705.1A patent/CN103331527B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201988880U (en) * | 2011-04-19 | 2011-09-28 | 天津市诚睿缘金属制品有限公司 | Molding tooling for hub supporting frame of wind-driven generator with ribbed plate reinforcing structure |
| CN102350606A (en) * | 2011-09-07 | 2012-02-15 | 无锡市创新化工设备有限公司 | Supporting platform used for splicing large flanges |
| CN102615445A (en) * | 2012-04-25 | 2012-08-01 | 常熟市虞华真空设备科技有限公司 | Welding technique for flange and seal head |
Non-Patent Citations (2)
| Title |
|---|
| 大型风电过渡桩法兰制作安装工艺研究;周井华等;《港口科技》;20120315;第4-7页 * |
| 风力发电塔架制造技术;陈克等;《全国焊接工程创优活动经验交流会论文集》;20110916;第2.5.1节、图2.9，图2.10 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103331527A (en) | 2013-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103331527B (en) | The erection welding method of large footpath finished product flange | |
| CN206780219U (en) | Penstock activity inner support | |
| CN104690471A (en) | Method for controlling annular gap small clearance of spherical box bottom of 5M-level thin-wall storage box | |
| CN202655402U (en) | Device for adjusting roundness of penstock and supporting penstock | |
| CN201783541U (en) | Repairing tooling for internal wall of pipe orifice | |
| CN112570968B (en) | Pile leg shell ring butt joint method | |
| CN104564545A (en) | Offshore wind power jacket base transition section structure | |
| CN102501067A (en) | Method for splicing and installing coke dry quenching furnace shells | |
| CN111872543A (en) | Inner support device and method for stirring friction welding of tank sealing circular seam of storage tank | |
| CN205096774U (en) | Wind power generation tower section of thick bamboo flange assembly platform | |
| CN201432174Y (en) | Device for welding and assembling tower drum body and flange | |
| CN207028166U (en) | Continuous winding GRP pipe produces assembling die | |
| CN214357371U (en) | Suction cylinder jacket tray | |
| CN212122194U (en) | Internal support positioning device suitable for circumferential seam welding of bottom of rocket tank | |
| CN215370115U (en) | Split type wind power tower | |
| CN204536135U (en) | A kind of have the gear bidentate load testing machine all carrying function | |
| CN110102602B (en) | Barrel rounding device | |
| CN201779107U (en) | Special fixture for temporarily fixing steel pipe connection | |
| CN211804618U (en) | Steel construction rack preparation mould | |
| CN113067440A (en) | Tool for assembling wind driven generator and using method thereof | |
| CN205869841U (en) | A positioner for high precision welding of motor frame | |
| CN210414273U (en) | Positioning fixture for tower cylinder flange stiffened plate | |
| CN217970747U (en) | Vertical assembling jig frame for semicircular steel cylinder sections | |
| CN221833775U (en) | Assembly calibration jig | |
| CN220078311U (en) | Hoisting frame suitable for hoisting annular negative pressure cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |