CN117163498A - Bracket for field-shaped offshore wind power tower transport ship and construction process thereof - Google Patents
Bracket for field-shaped offshore wind power tower transport ship and construction process thereof Download PDFInfo
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- CN117163498A CN117163498A CN202311448161.2A CN202311448161A CN117163498A CN 117163498 A CN117163498 A CN 117163498A CN 202311448161 A CN202311448161 A CN 202311448161A CN 117163498 A CN117163498 A CN 117163498A
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- 238000003466 welding Methods 0.000 claims abstract description 159
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 35
- 238000005192 partition Methods 0.000 claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 20
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- 210000001503 joint Anatomy 0.000 claims description 16
- 238000005096 rolling process Methods 0.000 claims description 10
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- 238000005520 cutting process Methods 0.000 claims description 3
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- 239000011425 bamboo Substances 0.000 claims description 2
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- 229910000831 Steel Inorganic materials 0.000 abstract description 6
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- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
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Abstract
The application belongs to the technical field of steel structure construction, and discloses a bracket for a field-shaped offshore wind power tower transport ship and a construction process thereof, wherein the bracket comprises four connected star-shaped structures, and each star-shaped structure is formed by assembling a central cylinder body and a reinforcing rib plate; the cylinder body is arranged on the flange plate, the upper partition plate is arranged at the lower part in the cylinder body, and stiffening strips are arranged on the upper partition plate to form a cylinder body folding piece; the cylinder body folding piece is arranged on the bottom plate through the bottom sealing plate; the transverse edges of the bottom plate are provided with through long webs, the longitudinal joints are provided with middle webs, and the two side edges are provided with side plates; the outer wall of the cylinder body is connected with the middle web plate, the side plate and the through long web plate through reinforcing rib plates; cover plates are arranged on the side plates and the through long webs, and the cylinder body penetrates through holes formed in the cover plates; the cover plate is provided with a positioning assembly connected with the cylinder body. The application reduces the manufacturing difficulty and can control the deformation of the component in the welding process.
Description
Technical Field
The application belongs to the technical field of steel structure buildings, and particularly relates to a bracket for a transport ship of a field-shaped offshore wind power tower and a construction process thereof.
Background
The bracket for the field-shaped offshore wind power tower transport ship consists of four star-shaped structures, and each star-shaped structure is formed by combining and welding a central cylinder body and 16 stiffening plate legs. The round tube with the cross section of phi 7016X60X2500mm is welded with the circular flange with the cross section of phi 7176X192mm and the width of 473 mm. The diameter of the round tube is large, the thickness is large, the precision is high, and the deformation control is difficult in the welding process.
CN 218117966U discloses a hoisting device for preventing wind power tower from deforming, the mounting plate is located the rear side of tower and pastes with the ring flange of locating tower terminal surface department, the front end of mounting plate is equipped with the supporting component who stretches into tower inboard, supporting component offsets with the inside wall of tower, supporting component includes barrel and a plurality of supporting unit, supporting unit includes telescopic link and backing plate, the axis mutually perpendicular of telescopic link and barrel, the outer tube of telescopic link is connected with the barrel, its interior sleeve rod is connected rather than the one end of corresponding backing plate, the other end of backing plate offsets with the inside wall of tower. The tower drum is supported through the multiple groups of telescopic rods and the base plates, but the extension of the telescopic rods needs to be controlled when the support structure is supported, and the deformation prevention operation is troublesome.
For this reason, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
The application aims to solve the technical problem of providing a bracket for a transportation ship of a field-shaped offshore wind power tower and a construction process thereof, wherein the bracket reduces the manufacturing difficulty and can well control the deformation of a component in the welding process.
In order to solve the technical problems, the application provides a bracket for a field-shaped offshore wind power tower transport ship, which comprises four connected star-shaped structures, wherein each star-shaped structure is formed by assembling a central cylinder body and a reinforcing rib plate;
the cylinder body is arranged on the flange plate, the upper partition plate is arranged at the lower part in the cylinder body, and stiffening strips are arranged on the upper partition plate to form a cylinder body folding piece;
the cylinder body folding piece is arranged on the bottom plate through the bottom sealing plate; the transverse edges of the bottom plate are provided with through long webs, the longitudinal joints are provided with middle webs, and the two side edges are provided with side plates; the outer wall of the cylinder body is connected with the middle web plate, the side plate and the through long web plate through reinforcing rib plates; cover plates are arranged on the side plates and the through long webs, and the cylinder body penetrates through holes formed in the cover plates; the cover plate is provided with a positioning assembly connected with the cylinder body.
Through adopting above-mentioned technical scheme, optimize star type structure, install the rice word and prop at the flange inner wall, the lower part installation is equipped with the top baffle of stiffening strip in the barrel, and the barrel encloses with curb plate, logical long web and middle web to strengthen with deep floor, assemble the location to the barrel, reduced the manufacturing degree of difficulty of bracket.
Preferably, the cylinder is formed by splicing each segment after rolling and forming.
By adopting the technical scheme, the cylinder body is manufactured in sections, a large cylinder body is manufactured by dividing the cylinder body into a plurality of small parts, and the manufacturing of each small part can be performed simultaneously, so that the production efficiency is improved.
Preferably, the side wall of the cylinder body is provided with a manhole.
By adopting the technical scheme, the equipment is maintained through the manhole of the side wall, so that the normal operation of the equipment is ensured;
preferably, the side plates are provided with outer stiffening plates through triangular rib plates.
Through adopting above-mentioned technical scheme, connect with the triangle gusset between outside stiffening plate and the curb plate all around, increase the joint strength between outside stiffening plate and the curb plate all around, improve structural strength.
Preferably, the top partition has an L-shaped landing entrance in the center.
By adopting the technical scheme, the steel stairs are arranged on the L-shaped stair opening, so that personnel can conveniently overhaul up and down.
Preferably, a plurality of holes are formed in the periphery of the round hole in the bottom plate.
By adopting the technical scheme, each hole is formed in the bottom plate, so that the self weight of the transportation bracket is reduced while the reinforcing rib plate is conveniently positioned, the material is saved, and the manufacturing cost is saved.
A construction process of a bracket for a field-shaped offshore wind power tower transportation ship comprises the following steps:
step one, part board breaking and splicing;
step two, assembling a folding piece of the field-shaped transportation bracket cylinder; the cylinder body folding piece is assembled and manufactured by adopting a reverse manufacturing method;
(1) assembling a positioning welding flange; the thickness of the flange plate is increased, the machining allowance after welding is increased, the flange ring plate is subjected to breaking butt joint, the whole machining is performed after splicing and forming, and the inner wall of the flange is welded with a Chinese character 'mi';
(2) assembling a positioning welding cylinder body; the cylinder body is formed by splicing sectional rolling after the sectional rolling is formed; each sectional cylinder is respectively hoisted and positioned on the flange plate, and the deformation of the sectional cylinder is controlled by adopting a tool; the manhole of the cylinder body is subjected to powder spraying and scribing during lofting, blanking and cutting, and the manhole is opened after the cylinder body is formed in a rolling way; the requirement of the angle joint weld between the cylinder body and the flange is local penetration PP, and a double-sided groove welding mode is adopted;
(3) assembling and positioning a top partition plate; the top partition plate and the stiffening strip are firstly folded into small pieces, and the corner joint welding seam between the top partition plate and the stiffening strip is required to adopt a double-sided fillet welding form; then assembling and positioning the top partition board folding piece in a blocking way, firstly welding a fillet weld at the plane position between the top partition board and the wall board of the cylinder body, and welding the fillet weld at the reverse elevation angle position and the top partition board breaking butt weld after the cylinder body turns over;
(4) assembling, positioning and welding a turning support; positioning and installing a rice-shaped support for turning over the cylinder body, controlling the turning-over deformation of the cylinder body, and dismantling the rice-shaped support before the whole body is assembled after the turning-over;
step three, assembling and welding the field-shaped transportation bracket A in a blocking way;
(1) a, setting a block assembly jig frame;
(2) the bottom plate and the middle web are assembled and positioned; after the bottom plate and the middle web are assembled and hoisted on the jig frame, positioning welding is carried out by adopting temporary tooling measures, and the corner joint welding seam between the bottom plates at two sides and the middle web is required to adopt a double-sided fillet welding mode;
(3) assembling and positioning a bottom sealing plate; the bottom sealing plate and the stiffening strip are folded into small pieces, and the bottom sealing plate and the stiffening strip are welded by double-sided fillet welds; then lifting a bottom sealing plate closure member for positioning welding, wherein the requirement of an angle joint welding seam between the periphery of the bottom sealing plate closure member and the bottom plate is local penetration PP, and a single-sided groove welding mode is adopted;
(4) assembling and positioning the cylinder body folding piece; sequentially hoisting and positioning the cylinder closure members for assembly welding, wherein the angle joint welding seam between the cylinder closure members and the bottom plate is required to be a local penetration PP, and a double-sided groove welding mode is adopted;
(5) assembling and positioning reinforcing rib plates of the cylinder; sequentially hoisting reinforcing rib plates for assembly welding, wherein the requirement of a corner joint welding seam between the reinforcing rib plates and the bottom plate and the cover plate is a double-sided corner welding seam requirement; the corner joint welding seam between the reinforcing rib plate corresponding to the positioning assembly and the bottom plate and the cover plate is required to be a local penetration PP, and a double-sided groove welding mode is adopted;
the corner joint welding seam between the reinforcing rib plate and the cylinder body, the middle web plate and the surrounding side plates is required to be local penetration PP, a double-sided groove welding mode is adopted, and a single-sided groove welding mode is adopted when double-sided welding is unavailable;
(6) assembling and positioning the side plates; the lengthening side plates between the two through long webs on the two sides are all required to be lengthened firstly and then assembled and positioned and welded; the corner joint welding seam between the bottom plate and the side plate is required to adopt a double-sided corner welding seam welding mode;
the requirements of the corner joint welding seams among the side plates, the cover plate and the self combination are local penetration PP, and a single-sided groove welding mode is adopted;
(7) assembling and positioning the cover plate; sequentially hoisting the cover plates for assembly and positioning, wherein the corner joint welding seams among the cover plates, the side plates and the cylinder body are local penetration PP, a single-sided groove welding mode is adopted, and the reverse side is reinforced by the corner joint welding seams; the cover plate is hoisted and positioned in a blocking way, and butt joints of the breaking and splicing positions of the cover plate are welded after the positioning and checking are qualified, and the butt joints adopt a backing plate welding butt joint mode;
(8) the outer stiffening plate and the triangular rib plate are assembled and positioned; the corner joint welding seam between the outer stiffening plate and the triangular rib plate and the framework is a local penetration PP, and a double-sided fillet welding mode is adopted;
(9) assembling a positioning assembly; the welding seam between the positioning assembly folding piece and the framework is required to be in a double-sided fillet welding seam mode;
and (2) assembling the blocks A and B according to the assembly step of the block A, transporting the blocks A and B to a shipping port after the assembly and inspection of the blocks A and B are completed, and fixing the blocks A and B on a deck of the offshore heavy-duty transport ship in a welding mode, and combining and butting the blocks A and B into a bracket for the offshore wind power tower transport ship in a field shape for integral shipping.
Through adopting above-mentioned technical scheme, the construction process of marine wind power tower section of thick bamboo transportation ship bracket of field style of calligraphy through top baffle and the rice style of calligraphy to the barrel assembly location prop, and the barrel folds the piece and fixes a position in the space that middle web, curb plate, logical long web enclose through deep floor, welds outside stiffening plate on the curb plate, and outside stiffening plate is consolidated with triangle gusset location, then covers the apron, and finally welding positioning assembly has carried out optimal design to this disc type structure node, has reduced the welding manufacturing degree of difficulty of this bracket, provides technological support for the marine tie of follow-up large-scale marine, circular rotating member preparation.
Compared with the prior art, the application has the following beneficial effects:
1. the application optimizes the star-shaped structure, the top baffle plate provided with stiffening strips is arranged at the lower part in the cylinder body, the cylinder body is surrounded by the side plates, the through long webs and the middle webs, and the cylinder body is reinforced by the reinforcing rib plates, so that the cylinder body is assembled and positioned, and the manufacturing difficulty of the bracket is reduced.
2. The outer stiffening plates and the peripheral side plates are connected through the triangular rib plates, so that the connection strength between the outer stiffening plates and the peripheral side plates is improved, and the structural strength is improved.
3. According to the construction process of the bracket for the field-shaped offshore wind power tower transportation ship, the top partition plate and the rice-shaped support are assembled and positioned on the cylinder, the cylinder folding piece is positioned in the space surrounded by the middle web plate, the side plate and the through long web plate through the reinforcing rib plate, the outer stiffening plate is welded on the side plate, the outer stiffening plate is positioned and reinforced by the triangular rib plate, the cover plate is covered, and finally the positioning assembly is welded, the disc-shaped structural node is optimally designed, the welding manufacturing difficulty of the bracket is reduced, the structural deformation in the welding process is well controlled, the welding precision is high, and process support is provided for manufacturing of subsequent large marine binding pieces and circular rotating pieces.
Drawings
FIG. 1 is a schematic block diagram of a bracket according to the present application.
Fig. 2 is a broken view of the cover plate of the present application.
Fig. 3 is a cut-away view of a floor panel of the present application.
Fig. 4 is a fragmentary view of a through-length web of the present application.
FIG. 5 is a developed and broken view of the cylinder of the present application.
FIG. 6 is a schematic view of the assembly of the cylinder closure according to the present application at step 1.
FIG. 7 is a schematic view of the assembly of the cylinder closure in step 3 of the present application.
FIG. 8 is a schematic view of the assembly of the cylinder closure in step 4 of the present application.
FIG. 9 is a schematic diagram of the assembly of the cylinder closure of the present application at step 5.
FIG. 10 is a schematic view of the welding of the cylinder of the present application.
Fig. 11 is a schematic diagram of step 1 of block assembly welding of a field-shaped transportation bracket A.
Fig. 12 is a schematic view of step 2 of block assembly welding of the field-shaped transportation bracket a of the present application.
Fig. 13 is a schematic diagram of step 4 of the assembly and welding of the field-shaped transportation bracket A in a blocking manner.
Fig. 14 is a schematic diagram of step 5 of the block assembly welding of the field-shaped transportation bracket a of the present application.
Fig. 15 is a schematic view of step 6 of the assembly welding of the field-shaped transportation bracket A according to the application.
Fig. 16 is a schematic diagram of step 7 of block assembly welding of the field-shaped transportation bracket a of the present application.
Fig. 17 is a schematic diagram of step 8 of the assembly welding of the field-shaped transportation bracket A according to the application.
Fig. 18 is a schematic diagram of step 9 of the assembly welding of the pan-shaped transportation bracket A according to the application.
In the figure, the structure comprises a star-shaped structure, a cylinder body, a reinforcing rib plate, a flange, a Chinese character 'mi' shaped support, a top partition plate, a stiffening strip, a bottom sealing plate, a bottom plate, a side plate, a middle web plate, a cover plate, a hole, a lateral stiffening plate, a positioning assembly, a cylinder body folding piece, a through-length web plate, a triangular rib plate, a stair opening, a hole, a manhole, a block position line, a jig frame and a supporting pier.
Description of the embodiments
The bracket for the field-shaped offshore wind power tower transport ship comprises four connected star-shaped structures 1, wherein each star-shaped structure 1 is formed by assembling a central cylinder body 2 and a reinforcing rib plate 3.
The cylinder body 2 is arranged on a flange plate of the flange 4, a top partition plate 6 is arranged at the lower part in the cylinder body 2, stiffening strips 7 are arranged on the top partition plate 6, the strength of the top partition plate is increased, and a cylinder body folding piece 16 is formed. The inner wall of the flange 4 is supported by a Chinese character 'mi' shaped support 5, and the Chinese character 'mi' shaped support 5 is removed after being integrally assembled.
The cylinder closure 16 is arranged on the bottom plate 9 via the bottom closing plate 8. The flange 4 is located at the bottom surface. The transverse edges of the bottom plate 9 are provided with through long webs 17, the longitudinal edges of the bottom plate 9 are provided with middle webs 11, and the two side edges of the bottom plate 9 are provided with side plates 10. Reinforcing rib plates 3 are circumferentially arranged on the outer wall of the cylinder body 2. The side plates 10, the through long webs 17 and the middle webs 11 are all connected with the reinforcing rib plates 3. The cover plate 12 is covered on the side plate 10 and the through long web 17, and the cylinder 2 penetrates through the hole 13 formed on the cover plate 12; an outer stiffening plate 14 is provided outside the side plate 10. The four bottom plates 9 provided with the cylinder 2 are connected to form the star-shaped structure 1. The cover plate 12 is provided with a positioning assembly 15 connected with the cylinder 2. The application optimizes the star-shaped structure 1, installs the top baffle 6 equipped with stiffening strips 7 at the lower part in the cylinder 2, and the cylinder 2 is surrounded by the side plates 10, the through long webs 17 and the middle webs 11 and is reinforced by the reinforcing rib plates 3, so as to assemble and position the cylinder 2, thereby reducing the manufacturing difficulty of the bracket.
The cylinder body 2 is formed by splicing the sections after rolling and forming. The cylinder 2 is manufactured in sections, a large cylinder 2 is manufactured by being divided into a plurality of small parts, the fabrication of each small part can be performed simultaneously, thereby improving the production efficiency.
The side wall of the cylinder body 2 is provided with a manhole 21. The manhole 21 of the side wall is used for overhauling, so that the normal operation of the equipment is ensured.
The side plates 10 are provided with outer stiffening plates 14 by triangular rib plates 18. The outer stiffening plates 14 are connected with the peripheral side plates 10 through the triangular rib plates 18, so that the connection strength between the outer stiffening plates 14 and the peripheral side plates 10 is increased, and the structural strength is improved.
The center of the top partition plate 6 is provided with an L-shaped stair opening 19. The L-shaped stair opening 19 is provided with the steel stair, so that personnel can conveniently overhaul up and down.
A plurality of special-shaped holes 20 are arranged on the periphery of the round hole on the bottom plate 9. And each special-shaped hole 20 is formed in the bottom plate 9, so that the self weight of the transportation bracket is reduced, the materials are saved, and the manufacturing cost is saved while the reinforcing rib plate 3 is conveniently positioned.
As shown in fig. 1, in the construction process of the bracket for the field-shaped offshore wind turbine tower transport ship, after the bracket is split into the A block and the B block, the A block and the B block are fixed on a ship deck in a welding mode, and the A block and the B block are combined and butted to form the whole bracket for the field-shaped offshore wind turbine tower transport ship. The bracket for the field-shaped offshore wind power tower transport ship has a complex structure, the external dimension is larger, and the requirements for manufacturing and field installation are higher. The guiding idea of 'getting into the whole to be zero' is determined on the premise of improving the single-piece precision and ensuring the whole precision, and the essence is further improved. Firstly, dividing and splitting the middle block position line 22 of the bracket for the offshore wind power tower transport ship into two blocks A and B along the field shape to manufacture and transport, wherein the single block is the largest size, long, wide and high: 27405mmX13850mmX5055mm, a net weight of about 280T. And secondly, performing factory breaking on the ultra-wide and ultra-long part plates, splicing, lengthening and widening, forming each plate to meet the drawing size requirement, and measuring and checking the flatness of each plate on a steel jig frame. Because of the complex structure and the large external dimension, the part plate is cut by adopting the pretreated steel plate for blanking.
A, block assembly, comprising the following steps:
step one, as shown in figures 2-5, the part plates are subjected to breaking and splicing, and the ultra-wide and ultra-long part plates (a bottom plate 9, a cover plate 12, a through long web 17, a bottom sealing plate 8, a top separation plate 6 and a cylinder 2) are subjected to material breaking during lofting, and the part plates are subjected to fractional lifting and sectional butt joint according to assembly conditions during splicing. The cover plate 12 is welded after butt welding, hoisting and positioning.
Step two, assembling the field-shaped transportation bracket cylinder folding piece 16; the cylinder body folding piece 16 is assembled and manufactured by adopting a reverse manufacturing method;
step 1: as shown in fig. 6, 6 buttresses 24 (height 600 to 800 mm) are provided on a stable, firm and flat platform plate, and the flatness thereof is controlled to 1mm.
Step 2: and assembling a positioning welding flange 4. The thickness of the flange plate is increased by 10mm, the machining allowance is increased after welding, the flange ring plate is subjected to breaking butt joint, the whole machining is performed after splicing and forming, and the deformation of the flange 4 is controlled by adopting the positioning welding of the Mi-shaped support 5.
Step 3: as shown in fig. 7, the brazing cylinder 2 is assembled. The cylinder body 2 is formed by splicing sectional rolling after the sectional rolling is formed. Each sectional cylinder body 2 is respectively hoisted and positioned on the flange plate, and the deformation of the sectional cylinder bodies is controlled by adopting a tool. The manhole 21 of the cylinder 2 is subjected to powder spraying and scribing during laying-out and cutting, and the manhole 21 is opened after the rolling forming. The corner joint welding seam between the cylinder body 2 and the flange 4 is required to be local penetration (PP), and a double-sided groove welding mode is adopted.
Step 4: as shown in fig. 8, the top separator 6 is assembled and positioned. The top separator 6 and the stiffening strip 7 are first folded into small pieces, and the corner joint welding seam between the top separator 6 and the stiffening strip 7 is required to be in a double-sided fillet welding mode. And then assembling and positioning the top partition board folding piece in a blocking way, firstly welding the fillet weld at the plane position between the top partition board 6 and the wall board of the cylinder body 2, and welding after the fillet weld at the reverse elevation angle position and the top partition board 6 are disconnected and butt-jointed and the cylinder body 2 turns over.
Step 5: as shown in fig. 9, the tack weld turn-over support is assembled. The rice-shaped support 5 for turning over the cylinder body 2 is positioned and installed, the turning over deformation of the cylinder body 2 is controlled, and the rice-shaped support 5 is removed before the whole body is assembled after the turning over.
As shown in fig. 10, the cylinder 2 is welded to the flange 4. And after the assembly and positioning inspection of the cylinder body 2 are qualified, welding the corner joint welding seam of the cylinder body 2 and the flange 4, simultaneously welding the first layer of bottoming welding seam on the outer side of the cylinder body according to the following diagram by four welders (a, b, c, d), then welding the first layer of bottoming welding seam on the inner side of the cylinder body 2, and then performing staggered welding on each layer of welding seam. Welding is carried out strictly according to WPS, the interlayer temperature is controlled to be not more than 250 ℃ during welding, and the welding is carried out after cooling when the interlayer temperature is exceeded. The flatness change of the flange 4 is monitored during the welding process, and each time the weld joint welds 3 layers, the weld joint needs to be checked once.
Step three, assembling and welding the field-shaped transportation bracket A in a blocking way;
step 1, as shown in fig. 11, a block assembly jig is set. The specific positioning size of the jig frame is set according to the size of the special transport flat car, the main body jig frame 23 is shown in the drawing, the rest parts are required to be provided with partial auxiliary jig frames, and the assembly jig frames are required to be stable and high in strength. The overall levelness of the jig 23 requires a control tolerance of + -1 mm, with the middle three jig legs removed when the component is shipped, facilitating flatbed shipping.
Step 2, as shown in fig. 12, the bottom plate 9 and the intermediate web 11 are assembled and positioned. After the bottom plate 9 and the middle web 11 are assembled and hoisted on the jig frame, the temporary tooling measures are adopted for positioning welding, and the corner joint welding seam between the bottom plates 9 and the middle web 11 at two sides is required to be in a double-sided fillet welding mode.
And 3, assembling and positioning the bottom sealing plate 8. The bottom sealing plate 8 and the stiffening strip 7 are firstly folded into small pieces, and the bottom sealing plate 8 and the stiffening strip 7 are welded by double-sided fillet welds. And then lifting the bottom sealing plate closure member for positioning welding, wherein the corner joint welding seam between the periphery of the bottom sealing plate closure member and the bottom plate 9 is required to be local penetration (PP), and a single-sided groove welding mode is adopted.
Step 4, as shown in fig. 13, the cylinder closure 16 is assembled and positioned. And sequentially hoisting and positioning the cylinder closure members (16), assembling and welding, wherein the corner joint welding seam between the cylinder closure members 16 and the bottom plate 9 is required to be local penetration (PP), and a double-sided groove welding mode is adopted. The welding sequence of the cylinder closure and the bottom plate 9 refers to the welding sequence of the cylinder 2 and the flange 4.
Step 5, as shown in fig. 14, the reinforcing rib plate 3 of the cylinder 2 is assembled and positioned. And sequentially hoisting the reinforcing rib plates 3 for assembly welding, wherein the requirement of the corner joint welding seam between the reinforcing rib plates 3 on the outer side of the cylinder body 2 and the bottom plate 9 and the cover plate 12 is a double-sided corner welding seam requirement. The corner joint welding seam between the reinforcing rib plate 3 corresponding to the positioning assembly 15 and the bottom plate 9 and the cover plate 12 is required to be local penetration (PP), and a double-sided groove welding mode is adopted. And the transportation and positioning of the wind power tower are enhanced by a circle of reinforcing rib plates 3 on the outer wall of the cylinder body 2.
The corner joint welding seam between the reinforcing rib plate 3 and the cylinder body 2, the middle web 11 and the peripheral side plates 10 is required to be local penetration (PP), a double-sided groove welding mode is adopted, and a single-sided groove welding mode can be adopted when double-sided welding is unavailable.
Step 6, as shown in fig. 15, the side plate 10 is assembled and positioned. The two through long webs 17 and the side plates 10 with the thick and thin plates between the through long webs 17 are assembled and positioned and welded after being connected with each other. The corner joint weld between the bottom panel 9 and the side panel 10 is required to take the form of a double sided fillet weld.
The corner joint weld between the side plate 10 and the cover plate 12 and between the side plate and between the side plate and the cover plate are required to be locally penetrated (PP), and a single-sided groove welding mode is adopted.
Step 7, as shown in fig. 16, the cover plate 12 is assembled and positioned. The cover plate 12 is hoisted in sequence for assembly and positioning, the corner joint welding seam between the cover plate 12, the side plate 10 and the cylinder body 2 is a Partial Penetration (PP), a single-face groove welding mode is adopted, and the reverse face is reinforced by the corner welding seam. And the cover plate 12 is hoisted and positioned in a blocking way, and after the positioning and checking are qualified, the butt joint of the breaking and splicing positions is welded, and the butt joint adopts a backing plate welding butt joint mode.
Step 8, as shown in fig. 17, the outer stiffening plate 14 and the triangular rib plate 18 are assembled and positioned. The corner joint between the outer stiffening plate 14 and the gusset 18 and the frame is a Partial Penetration (PP) and is welded in a double sided fillet weld.
Step 9, as shown in fig. 18, the positioning assembly 15 is assembled. The positioning assembly 15 is folded in advance, the welding seam between the self-combination of the positioning assembly 15 is required to be in a double-sided fillet welding mode, and the welding seam between the folding piece of the positioning assembly and the framework is required to be in a double-sided fillet welding mode.
Step 10, the block assembly step B refers to the block assembly step A, after the block assembly inspection of the two blocks A and B is completed, the blocks A and B are transported to a shipping port, and are fixed on a deck of the SW7 marine heavy-duty transport ship in a welding mode to be combined and butted into a bracket for the field-shaped marine wind power tower transport ship for integral shipping.
According to the construction process of the bracket for the field-shaped offshore wind power tower transportation ship, the top partition plate 6 and the Mi-shaped support 5 are assembled and positioned on the cylinder body 2, the cylinder body folding piece 16 is positioned in a space surrounded by the middle web plate 11, the side plate 10 and the through long web plate 17 through the reinforcing rib plate 3, the outer side reinforcing plate 14 is welded on the side plate 10, the outer side reinforcing plate 14 is positioned and reinforced by the triangular rib plate 18, the cover plate 12 is covered, and finally the positioning assembly 15 is welded, so that the disc-shaped structural node is optimally designed, the welding manufacturing difficulty of the bracket is reduced, the structural deformation in the welding process is well controlled, and the welding precision is high, so that process support is provided for manufacturing of subsequent large marine binding pieces and circular rotating pieces.
The bracket is used for transporting the variable-diameter offshore wind power tower, and the transportation bracket is integrally shipped on a deck of the offshore heavy-duty transportation ship in a welding mode to assist in completing the installation work of offshore wind power facilities. The ship is a ship for installing the offshore wind power generation infrastructure with the greatest and most innovative world, and continuously contributes to the fields of global carbon neutralization and wind power generation.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. Bracket for field style of calligraphy marine wind power tower section of thick bamboo transport ship, its characterized in that: comprises four connected star-shaped structures (1), wherein each star-shaped structure (1) is assembled by a central cylinder body (2) and a reinforcing rib plate (3);
the cylinder body (2) is arranged on a flange (4) plate, a top partition plate (6) is arranged at the inner lower part of the cylinder body (2), and stiffening strips (7) are arranged on the top partition plate (6) to form a cylinder body folding piece (16);
the cylinder body folding piece (16) is arranged on the bottom plate (9) through the bottom sealing plate (8); the transverse edges of the bottom plate (9) are provided with through long webs (17), the longitudinal joints are provided with middle webs (11), and the two side edges are provided with side plates (10); the outer wall of the cylinder body (2) is connected with the middle web plate (11), the side plate (10) and the through long web plate (17) through reinforcing rib plates (3); cover plates (12) are arranged on the side plates (10) and the through long webs (17), and the cylinder body (2) penetrates through holes (13) formed in the cover plates (12); and the cover plate (12) is provided with a positioning assembly (15) connected with the cylinder body (2).
2. The field-type offshore wind tower transport vessel bracket according to claim 1, wherein: the cylinder body (2) is formed by splicing each sectional roll forming.
3. The field-type offshore wind tower transport vessel bracket according to claim 2, wherein: manhole (21) are arranged on the side wall of the cylinder body (2).
4. The field-type offshore wind tower transport vessel bracket according to claim 1, wherein: the side plates (10) are provided with outer stiffening plates (14) through triangular rib plates (18).
5. The field-type offshore wind tower transport vessel bracket according to claim 1, wherein: the center of the top partition plate (6) is provided with an L-shaped stair opening (19).
6. The field-type offshore wind tower transport vessel bracket according to claim 1, wherein: and a plurality of holes (20) are formed in the periphery of the round hole in the bottom plate (9).
7. The construction process of the bracket for the field-shaped offshore wind power tower transportation ship is characterized by comprising the following steps of: the method comprises the following steps:
step one, part board breaking and splicing;
step two, assembling a folding piece of the field-shaped transportation bracket cylinder; the cylinder body folding piece (16) is assembled and manufactured by adopting a reverse manufacturing method;
(1) assembling a positioning welding flange; the thickness of the flange (4) plate is increased, the machining allowance after welding is increased, the annular plate of the flange (4) is subjected to breaking butt joint, the integral machining is performed after splicing and forming, and the inner wall of the flange (4) is welded with a Chinese character 'mi' -shaped support (5);
(2) assembling a positioning welding cylinder body; the cylinder body (2) is formed by splicing sectional rolling after the sectional rolling is formed; each sectional cylinder (2) is respectively hoisted and positioned on a flange (4) plate, and the deformation of the sectional cylinder is controlled by adopting a tool; the manhole (21) of the cylinder body (2) is subjected to powder spraying and scribing during lofting, blanking and cutting, and the manhole (21) is opened after the cylindrical shell is coiled and molded; the corner joint welding seam between the cylinder body (2) and the flange (4) is required to be a local penetration PP, and a double-sided groove welding mode is adopted;
(3) assembling and positioning a top partition plate; the top partition plate (6) and the stiffening strip (7) are folded into small pieces, and the corner joint welding seam between the top partition plate (6) and the stiffening strip (7) is required to be in a double-sided fillet welding mode; then assembling and positioning the folding piece of the top partition plate (6) in a blocking way, firstly welding a fillet weld at the plane position between the top partition plate (6) and the wall plate of the cylinder body (2), and welding after the fillet weld at the reverse elevation angle position and the butt weld of the top partition plate (6) are disconnected and turned over;
(4) assembling, positioning and welding a turning support; positioning and installing a rice-shaped support (5) turned over by the cylinder body (2), controlling the turning over deformation of the cylinder body (2), and dismantling the rice-shaped support (5) before the whole assembly after the turning over;
step three, assembling and welding the field-shaped transportation bracket A in a blocking way;
(1) a, setting a block assembly jig frame;
(2) the bottom plate and the middle web are assembled and positioned; after the bottom plates (9) and the middle webs (11) are assembled and hoisted on the jig frame, positioning welding is carried out by adopting temporary tooling measures, and the corner joint welding seam between the bottom plates (9) on two sides and the middle webs (11) is required to adopt a double-sided corner joint welding mode;
(3) assembling and positioning a bottom sealing plate; the bottom sealing plate (8) and the stiffening strip (7) are folded into small pieces, and the bottom sealing plate (8) and the stiffening strip (7) are welded by double-sided fillet welds; then lifting a bottom sealing plate (8) closure member for positioning welding, wherein the requirement of a corner joint welding seam between the periphery of the bottom sealing plate (8) closure member and a bottom plate (9) is local penetration (PP), and a single-sided groove welding mode is adopted;
(4) assembling and positioning the cylinder body folding piece; sequentially hoisting and positioning cylinder body folding pieces (16) for assembly welding, wherein the angle joint welding seam between the cylinder body folding pieces (16) and the bottom plate (9) is required to be a local penetration PP, and a double-sided groove welding mode is adopted;
(5) assembling and positioning reinforcing rib plates of the cylinder; sequentially hoisting reinforcing rib plates (3), assembling and welding, wherein the requirement of a corner joint welding seam between the reinforcing rib plates (3) and the bottom plate (9) and between the reinforcing rib plates and the cover plate (12) is a double-sided corner joint welding seam requirement; the corner joint welding seam between the reinforcing rib plate (3) corresponding to the positioning assembly (15) and the bottom plate (9) and the cover plate (12) is required to be a local penetration PP, and a double-sided groove welding mode is adopted;
the fillet weld between the reinforcing rib plate (3) and the cylinder body (2), the middle web plate (11) and the peripheral side plate (10) is required to be local penetration PP, a double-sided groove welding mode is adopted, and a single-sided groove welding mode is adopted when double-sided welding is impossible;
(6) assembling and positioning the side plates; the lengthening side plates (10) between the two through long webs (17) at the two sides are firstly lengthened and then assembled and positioned and welded; the corner joint welding seam between the bottom plate (9) and the side plate (10) is required to adopt a double-sided corner welding seam welding mode;
the requirements of the corner joint weld joints between the side plates (10) and the cover plates (12) and between the side plates and the combination of the side plates and the cover plates are local penetration (PP), and a single-sided groove welding mode is adopted;
(7) assembling and positioning the cover plate; sequentially hoisting the cover plate (12) for assembly and positioning, wherein the corner joint welding seams among the cover plate (12), the side plate (10) and the cylinder body (2) are local penetration PP, a single-side groove welding mode is adopted, and the reverse side is reinforced by adopting a corner welding seam; the cover plate (12) is hoisted and positioned in blocks, and after the positioning and checking are qualified, butt joints of the breaking splicing positions are welded, and butt joints adopt a backing plate welding butt joint mode;
(8) the outer stiffening plate and the triangular rib plate are assembled and positioned; the corner joint welding seams between the outer stiffening plates (14) and the triangular rib plates (18) and the framework are local penetration PP, and a double-sided fillet welding mode is adopted;
(9) assembling a positioning assembly; the welding seam between the folding piece of the positioning assembly (15) and the framework is required to be in a double-sided fillet welding seam mode;
and (2) assembling the blocks A and B according to the assembly step of the block A, transporting the blocks A and B to a shipping port after the assembly and inspection of the blocks A and B are completed, and fixing the blocks A and B on a deck of the offshore heavy-duty transport ship in a welding mode, and combining and butting the blocks A and B into a bracket for the offshore wind power tower transport ship in a field shape for integral shipping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311448161.2A CN117163498B (en) | 2023-11-02 | 2023-11-02 | Bracket for field-shaped offshore wind power tower transport ship and construction process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311448161.2A CN117163498B (en) | 2023-11-02 | 2023-11-02 | Bracket for field-shaped offshore wind power tower transport ship and construction process thereof |
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| CN117163498B (en) | 2023-12-26 |
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