CN113579664B - Novel method for manufacturing short cylindrical section flange section of offshore wind power tower cylinder - Google Patents
Novel method for manufacturing short cylindrical section flange section of offshore wind power tower cylinder Download PDFInfo
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- CN113579664B CN113579664B CN202111152192.4A CN202111152192A CN113579664B CN 113579664 B CN113579664 B CN 113579664B CN 202111152192 A CN202111152192 A CN 202111152192A CN 113579664 B CN113579664 B CN 113579664B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000003466 welding Methods 0.000 claims abstract description 62
- 238000005520 cutting process Methods 0.000 claims abstract description 41
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 13
- 238000005498 polishing Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention discloses a novel method for manufacturing a short cylinder section flange section of an offshore wind power tower cylinder, which comprises the steps of steel plate cutting, groove processing, steel plate edge rolling group combination, longitudinal seam welding, flange group combination, girth welding and integral cutting, wherein two gaps which are spaced from left to right are horizontally cut at the middle position of the steel plate during the steel plate cutting, bridge-cut nodes are reserved at the two ends of the gaps, and the bridge-cut nodes are cut along the gaps during the integral cutting, so that the two short cylinder section flange sections are manufactured by separation. The invention greatly shortens the manufacturing period of the short cylinder section flange section, improves the working efficiency and simultaneously ensures the cutting accuracy.
Description
Technical Field
The invention relates to the technical field of offshore wind power generation, in particular to a novel method for manufacturing a short cylinder section flange section of an offshore wind power tower cylinder.
Background
The offshore wind power tower cylinder is composed of a plurality of cylinder sections with flanges, and in the actual production process, the cylinder section flange sections are generally manufactured by welding and fixing flanges and adjacent single cylinder section circular seams.
Before circular seam welding is carried out, a single cylinder section and a flange are required to be placed between two groups of roller frames; the length of part of the short cylinder section is smaller than the minimum distance between the two groups of roller frames, the short cylinder section cannot be simultaneously lapped on the two groups of roller frames, and the cylinder section is easy to incline by the single group of roller frames, so that potential safety hazards are caused.
Chinese patent publication No. CN112576451A discloses a tower, a tower segment, and a method for manufacturing a tower segment, wherein "two end flanges are respectively fixed at two ends of a cylinder to obtain a tower segment, identification lines of the two end flanges are aligned in a longitudinal direction, a cutting reference line is scribed on an outer wall of the cylinder with the identification lines of the two end flanges as references, and the tower segment is respectively cut from an outer side with each cutting reference line as a reference". The tower section is integrally cut by taking the cutting datum line as a reference in the prior art, the cutting precision is general, the cutting area is large, the manufacturing period is long, and the technical problem that the short tower section flange section cannot be quickly and safely manufactured on the roller frame is solved.
Disclosure of Invention
The invention aims to provide a novel method for manufacturing a short cylindrical flange section of an offshore wind power tower cylinder, which aims to solve the technical problems that the existing manufacturing method provided in the background art is long in manufacturing period, general in manufacturing precision and incapable of quickly and safely manufacturing the short cylindrical flange section by utilizing a roller frame.
In order to achieve the purpose, the invention adopts the following technical scheme:
a novel method for manufacturing a short cylinder section flange section of an offshore wind power tower cylinder comprises the following specific steps:
1) cutting a steel plate: integrally blanking two short cylindrical sections, horizontally cutting two gaps which are spaced left and right at the middle position of a blanked steel plate by using a numerical control machine, and reserving broken bridge nodes at two ends of each gap, wherein the lengths of the two gaps are equal, the length direction of each gap is perpendicular to the length direction of a flange section of the long cylindrical section to be manufactured, and cutting is carried out by using numerical control flame at the speed of 280-320 mm/min;
2) the groove is processed, a flame semi-automatic cutting machine is used for cutting the groove, and a polishing machine is used for polishing and cleaning;
3) rolling a steel plate, welding and positioning the butt joint of the steel plate by adopting solid gas shielded welding spots, and spot-welding the steel plate at one position every 300mm, wherein the length of the spot welding is not less than 100 mm;
4) longitudinal seam welding, namely welding an inner longitudinal seam firstly and then welding an outer longitudinal seam by adopting a submerged-arc welding mode, wherein the welding current is 600-700A, the welding voltage is 28-34V, and the welding speed is 26-30 m/h;
5) and (3) flange pairing: the method comprises the following steps of adopting a horizontal transverse assembly mode, assembling two flanges and a long shell ring formed after welding a longitudinal seam, and performing positioning welding on the outer side, wherein the two flanges are respectively fixed at two ends of the long shell ring to obtain a long shell ring flange section;
6) girth welding: the long cylinder section flange section is transversely and stably placed on a welding roller frame, a circular seam is welded in a submerged arc welding mode, the welding current is 600-740A, the welding voltage is 28-35V, the welding speed is 28-32 m/h, and detection is carried out after welding is finished, wherein the detection mode comprises VT detection, UT detection and MT detection;
7) integral cutting: cutting off the bridge-cut-off joint by using a flame cutting torch along the two gaps cut out in the step 1), so as to thoroughly separate the long shell ring flange section into two short shell ring flange sections, wherein the gaps are distributed at intervals along the circumferential direction of the long shell ring flange section at the middle position of the long shell ring flange section, and the length of the gap extends along the circumferential direction of the long shell ring flange section.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the bridge-cut-off node on the long cylinder section flange section is cut off only along the gap, so that the short cylinder section flange section can be separated and manufactured, the cutting area is small, the operation difficulty is low, the manufacturing period of the short cylinder section flange section is greatly shortened, and the working efficiency is improved;
2. according to the invention, the subsequent cutting direction is limited by the gap which is cut in the middle of the blanked steel plate in advance, compared with the existing integral cutting mode, the cutting accuracy is greatly improved, and meanwhile, the deformation in the cutting process is effectively avoided;
3. according to the invention, the flanges and the long cylinder sections are assembled in a horizontal and transverse assembling mode, so that the operation is more convenient and the assembling time is saved compared with a vertical assembling mode.
Drawings
FIG. 1 is a schematic view of a cut of a steel plate according to the present invention;
fig. 2 is a schematic diagram of the working principle of the present invention.
In the figure: 1. a steel plate 2, a welding roller frame 3, flanges 4, a long cylinder section flange section 5 and a gap; 6. and (4) bridge-cutoff nodes.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and embodiments.
Referring to fig. 1 and fig. 2, a new method for manufacturing a short shell ring flange section of an offshore wind turbine tower in this embodiment includes the following specific steps:
integrally blanking two short cylindrical sections, namely horizontally cutting two left and right spaced equal-length gaps 5 at the middle position of a blanked steel plate 1 by using a numerical control machine tool at a cutting speed of 280-320 mm/min by using numerical control flame, wherein broken bridge nodes 6 are reserved at two ends of each gap 5, and the length direction of each gap 5 is perpendicular to the length direction of a long cylindrical section flange section 4 to be manufactured;
cutting and grooving by using a flame semi-automatic cutting machine, and polishing and cleaning by using a polishing machine;
thirdly, rolling the steel plate 1, and welding and positioning the butt joint of the steel plate 1 by adopting a solid gas shielded welding spot, wherein the length of the spot welding is more than or equal to 100mm, and the spot welding is performed at one position every 300 mm;
welding the inner longitudinal seam and the outer longitudinal seam in sequence by adopting a submerged arc welding mode, wherein the welding current is 600-700A, the welding voltage is 28-34V, and the welding speed is 26-30 m/h;
step five, adopting a horizontal transverse pairing mode to pair the two flanges 3 and the long cylindrical section formed after the longitudinal joint is welded, and performing positioning welding on the outer side, wherein the two flanges 3 are respectively fixed at the two ends of the long cylindrical section to obtain a long cylindrical section flange section 4;
step six, transversely and stably placing the long cylinder section flange section 4 on the welding roller frame 2, welding a circular seam by using a submerged arc welding mode, wherein the welding current is 600-740A, the welding voltage is 28-35V, the welding speed is 28-32 m/h, and VT detection, UT detection and MT detection are sequentially carried out after welding is finished;
seventhly, cutting two gaps 5 (the gaps 5 are distributed at intervals in the circumferential direction in the middle of the long shell ring flange section 4, and the length of the gaps extends in the circumferential direction of the long shell ring flange section 4) on the long shell ring flange section 4 along the cutting in the step 1), cutting off the bridge cutoff node 6 through a flame cutting gun, wherein the flame cutting gun uses oxygen and acetylene as heat sources, so that the long shell ring flange section 4 is thoroughly separated into two short shell ring flange sections.
Claims (9)
1. A novel method for manufacturing a short shell ring flange section of an offshore wind power tower barrel is characterized by comprising the following steps:
1) cutting a steel plate: integrally blanking two short cylindrical sections, horizontally cutting two left and right spaced gaps in the middle of a blanked steel plate by using a numerical control machine, and reserving bridge-cut-off nodes at two ends of each gap, wherein the length direction of each gap is vertical to the length direction of a flange section of a long cylindrical section to be manufactured;
2) groove machining;
3) rolling the steel plate, and performing spot welding positioning at the butt joint of the steel plate;
4) longitudinal seam welding;
5) and (3) flange pairing: the method comprises the following steps of adopting a horizontal transverse assembly mode, assembling two flanges and a long shell ring formed after welding a longitudinal seam, and performing positioning welding on the outer side, wherein the two flanges are respectively fixed at two ends of the long shell ring to obtain a long shell ring flange section;
6) girth welding: the long cylinder section flange section is transversely and stably placed on a welding roller frame, a circular seam is welded in a submerged-arc welding mode, and detection is carried out after welding is finished;
7) integral cutting: cutting off the bridge-cutoff joint by using a flame cutting torch along the two gaps cut out in the step 1), thereby thoroughly separating the long cylindrical shell section flange section into two short cylindrical shell section flange sections.
2. The novel manufacturing method of the short cylinder section flange section of the offshore wind power tower cylinder according to claim 1, characterized in that in the step 1), cutting is performed by adopting flame of a numerical control machine tool, and the cutting speed is 280-320 mm/min.
3. The method for manufacturing the short-section flange section of the offshore wind power tower cylinder according to claim 1, wherein in the step 1), the two gaps are equal in length.
4. The novel manufacturing method of the short-section flange section of the offshore wind power tower barrel according to claim 1, characterized in that the specific operation steps of the step 2) are as follows: cutting the groove by using a flame semi-automatic cutting machine, and polishing and cleaning by using a polishing machine.
5. The method for manufacturing the short cylinder section flange section of the offshore wind power tower cylinder according to claim 1, wherein in the step 3), solid gas shielded welding spots are adopted for welding and positioning, and the length of each spot welding is not less than 100mm at intervals of 300 mm.
6. The novel manufacturing method of the short-section flange section of the offshore wind power tower barrel according to claim 1, characterized in that the specific operation steps of the step 4) are as follows: and adopting a submerged-arc welding mode, firstly welding the inner longitudinal seam, and then welding the outer longitudinal seam, wherein the welding current is 600-700A, the welding voltage is 28-34V, and the welding speed is 26-30 m/h.
7. The novel method for manufacturing the short-section flange section of the offshore wind power tower barrel according to claim 1, wherein in the step 6), the welding current is 600-740A, the welding voltage is 28-35V, and the welding speed is 28-32 m/h.
8. The method for manufacturing the short-section flange section of the offshore wind turbine tower barrel according to claim 1, wherein in the step 6), the detection modes include VT detection, UT detection and MT detection.
9. The new method for manufacturing the short cylinder section flange section of the offshore wind power tower cylinder according to claim 1, wherein in the step 7), two slits are distributed at intervals along the circumferential direction of the long cylinder section flange section at the middle position of the long cylinder section flange section, and the length of the slits extends along the circumferential direction of the long cylinder section flange section.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111152192.4A CN113579664B (en) | 2021-09-29 | 2021-09-29 | Novel method for manufacturing short cylindrical section flange section of offshore wind power tower cylinder |
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| CN202111152192.4A CN113579664B (en) | 2021-09-29 | 2021-09-29 | Novel method for manufacturing short cylindrical section flange section of offshore wind power tower cylinder |
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| CN113579664A CN113579664A (en) | 2021-11-02 |
| CN113579664B true CN113579664B (en) | 2021-11-30 |
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| CN114012372B (en) * | 2022-01-05 | 2022-04-08 | 中交三航(南通)海洋工程有限公司 | Construction method of super-large-diameter single-pile composite cylinder |
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|---|---|---|---|---|
| CN101564739A (en) * | 2009-05-31 | 2009-10-28 | 武汉冶建安装工程有限责任公司 | Pipe rolling technique for pressure head material-free steel pipe |
| CN107654338A (en) * | 2017-09-30 | 2018-02-02 | 新疆金风科技股份有限公司 | Tower section, pylon, the manufacture method of wind power generating set and tower section |
| CN108301982A (en) * | 2017-01-12 | 2018-07-20 | 上海泰胜风能装备股份有限公司 | Split blade type blower fan tower barrel and its manufacturing method and transportation resources |
| CN110666445A (en) * | 2019-08-22 | 2020-01-10 | 江苏海灵重工设备科技有限公司 | Novel process for manufacturing large-diameter tower |
| 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 |
| CN112576451A (en) * | 2019-09-30 | 2021-03-30 | 新疆金风科技股份有限公司 | Tower, tower section and manufacturing method of tower section |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100257739A1 (en) * | 2009-06-30 | 2010-10-14 | Sujith Sathian | Methods and flange for assembling towers |
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- 2021-09-29 CN CN202111152192.4A patent/CN113579664B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101564739A (en) * | 2009-05-31 | 2009-10-28 | 武汉冶建安装工程有限责任公司 | Pipe rolling technique for pressure head material-free steel pipe |
| CN108301982A (en) * | 2017-01-12 | 2018-07-20 | 上海泰胜风能装备股份有限公司 | Split blade type blower fan tower barrel and its manufacturing method and transportation resources |
| CN107654338A (en) * | 2017-09-30 | 2018-02-02 | 新疆金风科技股份有限公司 | Tower section, pylon, the manufacture method of wind power generating set and tower section |
| CN110666445A (en) * | 2019-08-22 | 2020-01-10 | 江苏海灵重工设备科技有限公司 | Novel process for manufacturing large-diameter tower |
| CN112576451A (en) * | 2019-09-30 | 2021-03-30 | 新疆金风科技股份有限公司 | Tower, tower section and manufacturing method of tower section |
| 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 |
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Effective date of registration: 20231114 Address after: 226,400 Building A45, Four Seas Home, No. 1, Huanghai Second Road, Duyen Hai Economic Development Zone, Rudong County, Nantong City, Jiangsu Province Patentee after: Jiangsu Haili Wind Energy Equipment Co.,Ltd. Address before: 226400 Bingfang neighborhood committee, Dayu Town, Rudong County, Nantong City, Jiangsu Province Patentee before: JIANGSU HAILING HEAVY INDUSTRY EQUIPMENT TECHNOLOGY CO.,LTD. |
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