CN219932346U - Steel sleeve type concrete tower barrel structure of offshore wind generating set - Google Patents
Steel sleeve type concrete tower barrel structure of offshore wind generating set Download PDFInfo
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- CN219932346U CN219932346U CN202321221774.8U CN202321221774U CN219932346U CN 219932346 U CN219932346 U CN 219932346U CN 202321221774 U CN202321221774 U CN 202321221774U CN 219932346 U CN219932346 U CN 219932346U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 145
- 239000010959 steel Substances 0.000 title claims abstract description 145
- 239000004567 concrete Substances 0.000 title claims abstract description 69
- 239000011372 high-strength concrete Substances 0.000 claims abstract description 12
- 241000736911 Turritella communis Species 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 239000007787 solid Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model provides a steel sleeve type concrete tower barrel structure of an offshore wind generating set, which comprises a steel sleeve type concrete tower barrel, wherein the steel sleeve type concrete tower barrel is formed by connecting a plurality of steel sleeve type concrete tower barrel sections through flanges; each steel sleeve type concrete tower shell ring is provided with an inner steel sleeve layer and an outer steel sleeve layer, the upper end and the lower end of each steel sleeve layer are connected into a whole through a plurality of vertical toggle plates which are arranged in a circumferential direction, and high-strength concrete is poured between the two steel sleeve layers. Compared with the traditional steel tower, the steel sleeve type concrete tower with the same size has higher rigidity, higher solid end frequency at the bottom of the tower, smaller displacement and rotation angle of the fan head at the top of the tower and easier meeting the first-order frequency requirement of the whole machine, so that compared with the traditional steel tower, the steel sleeve type concrete tower is beneficial to reducing the diameter of the bottom of the tower, and meanwhile, a stable tower structure is provided.
Description
Technical Field
The utility model relates to a steel sleeve type concrete tower barrel structure of an offshore wind generating set, which is suitable for the offshore wind power generation industry.
Background
The new energy technology is a key green energy technology and has become an important energy transformation in China. The coastline of China is long, the offshore wind energy resources are rich, and the ocean becomes a rapidly developed wind power market. With the high-speed development of China on offshore wind power for more than ten years, a wind power field is further and further away from the shore, the wind power set is higher and higher in power, the hub is higher and higher, the tower is larger and longer in size, the flexibility of the existing steel tower is higher and higher, and the displacement and the rotation angle of a fan head are larger and higher, so that the power generation efficiency is affected to a certain extent. Aiming at the high-power wind turbine, the existing steel tower is high and flexible, so that the integral first-order frequency of the offshore wind power generation structure is forced to be reduced, the corresponding period of the offshore wind power generation structure is close to the average period of coastal waves in China, and the offshore wind power generation structure is about to become a factor for restricting the development of the high-power wind turbine. Taking a single pile foundation commonly used for offshore wind power in China as an example, because the steel tower of the high-power generator set is high and flexible, the first-order frequency of the solid end of the tower is smaller, in order to meet the first-order frequency requirement of the whole machine, the diameter of the single pile foundation is large, the wall thickness is thick, the diameter of the single pile is limited to the diameter of the bottom of the steel tower, and the diameter of the bottom of the tower is large, so that the risk that the tail of a blade of the wind power generator set touches the tower is generated.
Disclosure of Invention
In view of the above, in order to solve the limitation of the prior art in application and consider economy, the utility model provides a steel sleeve type concrete tower barrel structure of an offshore wind turbine generator set, which has higher rigidity of the steel sleeve type concrete tower barrel with the same size, higher solid end frequency of the tower bottom, smaller displacement and rotation angle of a fan head at the tower top and easier satisfaction of the first-order frequency requirement of the whole machine compared with the traditional steel tower barrel. For this purpose, the utility model adopts the following technical scheme:
a steel sleeve type concrete tower barrel structure of an offshore wind turbine generator is suitable for offshore wind power, in particular to a high-power wind turbine generator. The method is characterized in that: the steel sleeve type concrete tower cylinder is formed by connecting a plurality of steel sleeve type concrete tower cylinder sections through flanges; each steel sleeve type concrete tower shell ring is provided with an inner steel sleeve layer and an outer steel sleeve layer, the upper end and the lower end of each steel sleeve layer are connected into a whole through a plurality of vertical toggle plates which are arranged in a circumferential direction, high-strength concrete is poured between the two steel sleeve layers, the structural integrity and the rigidity are further improved, the first-order frequency of the structural whole machine is improved, the displacement and the rotation angle of a fan head are reduced, and the requirements of a high-power wind generating set are met.
On the basis of adopting the technical scheme, the utility model can also adopt the following further technical schemes or use the further technical schemes in combination:
the lower end of the steel sleeve type concrete tower barrel is connected with the offshore wind power foundation through a flange, the upper end of the steel sleeve type concrete tower barrel is connected with the steel tower barrel through a flange, and the steel tower barrel is connected with a wind turbine generator.
The upper end and the lower end of each steel sleeve type concrete tower shell ring are provided with flange structures, the flange structures have extremely strong compatibility, the flange structures are provided with connecting parts with the radius smaller than that of the inner layer steel sleeve, and bolt holes are annularly arranged on the connecting parts. The compatibility means that the steel sleeve type concrete tower cylinder is directly connected with the steel tower cylinder or the fan foundation through the flange structure and the bolt assembly, a special transition section or a complex conversion device is not required to be arranged, the structure manufacturing and construction cost is reduced, the construction rate is improved, the offshore construction time is shortened, and the engineering risk is reduced.
Each layer of steel sleeve belongs to a shell structure, the wall thickness of the steel sleeve plate is very thin, a plurality of groups of stiffening ribs are arranged in the longitudinal and transverse directions of one side of the plate facing the concrete, and the stiffening ribs simultaneously play a role of a shear key.
A plurality of vertical toggle plates which are circumferentially arranged at the upper end and the lower end of the inner and outer two-layer steel sleeves, and the toggle plates are welded and connected with the two-layer steel sleeves; the length of the toggle plate is larger than the gap between the inner steel sleeve and the outer steel sleeve, the direction points to the center of the sleeve, the toggle plate is flush with the end part of the steel sleeve, one end of the toggle plate is welded on the inner wall of the outer steel sleeve, the other end of the toggle plate penetrates through the grooving of the inner steel sleeve and is welded with the flange, the welding area of the flange plate is increased, and the structural strength of the connecting section of the tower barrel is enhanced.
And (3) perforating and welding a grouting pipe at the bottom of an inner layer steel cylinder of each section of steel sleeve type concrete tower cylinder, perforating and welding a slurry outlet pipe at the top, wherein the height of the slurry outlet pipe is flush with that of the steel sleeve type concrete tower cylinder. And pouring high-strength concrete from the lower grouting pipe until the grouting pipe flows out of the concrete for a certain time, so as to ensure that the high-strength concrete fills the steel sleeve gap.
Due to the adoption of the technical scheme, the steel sleeve type concrete tower barrel of the offshore wind turbine generator set has the following beneficial effects:
1. the utility model breaks through the limitation of large flexibility and low first-order frequency of the traditional steel tower, reduces the movement amplitude of the machine head, improves the first-order frequency of the whole structure machine, and can adapt to different hub heights and power wind turbines. Compared with the traditional steel tower, the steel sleeve type concrete tower with the same size has larger rigidity, higher tower bottom solid end frequency, smaller displacement and rotation angle of the fan head at the tower top, and easier satisfaction of the first-order frequency requirement of the whole machine, so that compared with the traditional steel tower, the steel sleeve type concrete tower is favorable for reducing the diameter of the bottom of the tower, and simultaneously, a stable tower structure is provided.
2. The utility model relates to a steel sleeve type concrete tower barrel of an offshore wind generating set, which has the advantages of simple structure, reasonable design, simple manufacture, strong structural integrity, high rigidity, good stability, strong compatibility, simple and convenient transportation and installation, and is particularly suitable for the offshore wind generating set of a high-power wind generating set
3. The utility model can be directly manufactured by utilizing the existing equipment of a steel structure processing plant, and a special concrete shaping mould is not required to be customized during manufacturing, so that the manufacturing cost is saved, and the manufacturing period is shortened.
4. The upper end and the lower end of the steel sleeve type concrete tower barrel are connected by adopting flange structures, so that the lower end of the steel sleeve type concrete tower barrel is connected with a offshore wind turbine foundation on the sea and the upper end of the steel sleeve type concrete tower barrel is connected with the steel tower barrel on the land through the flange structures and the bolt assemblies, a specific transition section or a complex conversion device is not needed, the manufacturing cost of the structure is reduced, the offshore installation and construction are rapid and convenient, the offshore construction period is shortened, and the offshore construction risk is reduced.
5. The utility model solves the defects of small welding area and insufficient structural strength of the connecting sections at the two ends of the steel sleeve type concrete tower. The vertical toggle plates circumferentially arranged at the upper end and the lower end of the steel sleeve are used for connecting the two layers of steel sleeves into a whole, the toggle plate part penetrating through the inner layer of the steel sleeve is welded with the flange structure, the welding area of the flange plate is increased, the structural integrity and the stability are enhanced, and the structural strength of the connecting section of the tower barrel is improved. And high-strength concrete is poured between the two layers of steel sleeves, so that the integrity and rigidity of the steel sleeve type concrete tower barrel are further improved, and the first-order frequency of the tower barrel is improved.
6. The steel sleeve type concrete tower cylinder is suitable for various offshore wind turbine foundations, including but not limited to a single pile foundation, a high pile cap foundation, a jacket foundation and a floating wind turbine foundation.
7. The combined tower barrel of the steel sleeve type concrete tower barrel and the steel tower barrel is convenient for marine transportation, and can be directly hoisted and installed along the existing steel tower barrel hoisting ship machine equipment during offshore construction, the existing ship machine equipment and construction scheme do not need to be updated, and the engineering stealth cost is reduced.
Drawings
FIG. 1 is a diagram showing the whole structure of the steel sleeve type concrete tower.
FIG. 2 is a single section cross-sectional view of the steel jacketed concrete tower of the present utility model.
Fig. 3 is a cross-sectional view of the end of the steel sleeve type concrete tower of the present utility model.
Fig. 4 is a schematic view of the welding of the toggle plate of the steel sleeve type concrete tower of the present utility model.
Fig. 5 is a schematic view of the flange structure of the steel sleeve type concrete tower.
Fig. 6 is a side expanded view of the steel sleeve concrete of the present utility model.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1, the steel sleeve type concrete tower barrel structure of the offshore wind generating set provided by the utility model comprises a plurality of sections of steel sleeve type concrete tower barrel sections 3, and the sections of steel sleeve type concrete tower barrel sections 3 are sequentially connected to form the steel sleeve type concrete tower barrel.
As shown in FIG. 2, the upper and lower ends of each section of steel sleeve type concrete tower are connected by adopting a flange structure 3-1, the flange structure 3-1 and a toggle plate 3-2, and an outer layer steel sleeve 3-3 and an inner layer steel sleeve 3-4 are welded into a steel structure whole. The offshore wind turbine generator system tower barrel adopting the scheme of the utility model is composed of a steel tower barrel 2 and a plurality of sections of steel sleeve type concrete tower barrels 3, wherein the steel tower barrel is positioned at the top of the steel sleeve type concrete tower barrel 3, and the wind turbine generator system 1 is arranged at the top of the steel tower barrel 2. The combination of the steel sleeve type concrete tower cylinder 3 and the steel tower cylinder 2 can be used for marine transportation and construction along with the ship machine equipment of the traditional steel tower cylinder, so that the development and configuration of novel ship machine equipment are not needed, and the engineering stealth cost is saved.
The flange structures 3-1 at the upper and lower ends seal the steel sleeve annular cavity between the outer layer steel sleeve 3-3 and the inner layer steel sleeve 3-4. The annular cavity between the inner layer steel sleeve and the outer layer steel sleeve is filled with high-strength concrete material 3-5, the grouting operation is performed to penetrate the high-strength concrete material 3-5 from a grouting pipe 3-7 arranged at the lower part of the inner layer steel sleeve 3-4 until the grouting pipe 3-6 arranged at the top of the inner layer steel sleeve 3-4 overflows concrete for a certain time, and the high-strength concrete 3-5 is ensured to fill the steel sleeve gap.
As shown in fig. 2 and 3, the vertical toggle plates 3-2 are circumferentially arranged at the upper end and the lower end of each section of steel sleeve type concrete tower barrel, so that the structural integrity is enhanced, the strength of a connecting section is improved, the shearing resistance and the torsion resistance of the tower barrel are enhanced, and the deformation of the tower barrel is reduced. Before pouring the high-strength concrete material 3-5, the structural welding manufacture is completed, and as shown in fig. 4 and 5, the toggle plate 3-2 is welded with the outer layer steel sleeve 3-3 and the inner layer steel sleeve 3-4 respectively. The flange structure 3-1 is welded with the outer layer steel sleeve 3-3, the inner layer steel sleeve 3-4 and the toggle plate 3-2 respectively to form a steel structure whole, and the welding of the flange structure 3-1 and the toggle plate 3-2 is carried out by taking care of avoiding the bolt hole position of the flange structure 3-1.
As shown in FIG. 6, the inner and outer steel sleeve plates are thin, in order to increase the structural strength of the plates, longitudinal and transverse stiffening ribs 3-8 are arranged on one side of the plates facing the high-strength concrete material 3-5, and the stiffening ribs 3-8 play a role of shear keys at the same time, so that the shearing resistance of the high-strength concrete material 3-5 is improved.
The steel sleeve type concrete tower barrel 3, the connecting sections at the two ends adopt flange structures 3-1, and the steel sleeve type concrete tower barrel can be applicable to various offshore wind turbine foundations 4 at present without a specific transition section or a complex conversion device. When in offshore construction, after the construction of the offshore wind turbine foundation 4 is completed, each section of steel sleeve type concrete tower barrel 3 is transported to the vicinity of the wind turbine foundation which is completed by construction, the steel sleeve type concrete tower barrel 3 is hoisted section by utilizing an offshore construction ship in a sequence from bottom to top, and is installed section by a flange structure 3-1 and a connecting bolt assembly, the top of the uppermost steel sleeve type concrete tower barrel 3 is connected with the steel tower barrel 2, and the wind turbine generator 1 is fixed at the top of the steel tower barrel 2.
The above embodiment is only one preferred technical solution of the present utility model, and it should be understood by those skilled in the art that modifications and substitutions can be made to the technical solution or parameters in the embodiment without departing from the principle and essence of the present utility model, and all the modifications and substitutions are covered in the protection scope of the present utility model.
Claims (5)
1. A steel sleeve type concrete tower barrel structure of an offshore wind generating set is characterized in that: the steel sleeve type concrete tower cylinder is formed by connecting a plurality of steel sleeve type concrete tower cylinder sections through flanges; each steel sleeve type concrete tower shell ring is provided with an inner steel sleeve layer and an outer steel sleeve layer, the upper end and the lower end of each steel sleeve layer are connected into a whole through a plurality of vertical toggle plates which are arranged in a circumferential direction, and high-strength concrete is poured between the two steel sleeve layers.
2. An offshore wind turbine steel sleeve type concrete tower structure as claimed in claim 1, wherein: the lower end of the steel sleeve type concrete tower barrel is connected with the offshore wind power foundation through a flange, the upper end of the steel sleeve type concrete tower barrel is connected with the steel tower barrel through a flange, and the steel tower barrel is connected with a wind turbine generator.
3. An offshore wind turbine steel sleeve type concrete tower structure as claimed in claim 1, wherein: the upper end and the lower end of each steel sleeve type concrete tower shell ring are provided with flange structures, the flange structures have extremely strong compatibility, the flange structures are provided with connecting parts with the radius smaller than that of the inner layer steel sleeve, and bolt holes are annularly arranged on the connecting parts.
4. An offshore wind turbine steel sleeve type concrete tower structure as claimed in claim 1, wherein: a plurality of vertical toggle plates which are circumferentially arranged at the upper end and the lower end of the inner and outer two-layer steel sleeves, and the toggle plates are welded and connected with the two-layer steel sleeves; the length of the toggle plate is larger than the gap between the inner steel sleeve and the outer steel sleeve, the direction points to the center of the sleeve, the toggle plate is flush with the end part of the steel sleeve, one end of the toggle plate is welded on the inner wall of the outer steel sleeve, the other end of the toggle plate penetrates through the grooving of the inner steel sleeve and is welded with the flange, the welding area of the flange plate is increased, and the structural strength of the connecting section of the tower barrel is enhanced.
5. An offshore wind turbine steel sleeve type concrete tower structure as claimed in claim 1, wherein: and opening holes in the bottom of an inner layer steel cylinder of each section of steel sleeve type concrete tower cylinder, welding a grouting pipe, and opening holes in the top to weld a slurry outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321221774.8U CN219932346U (en) | 2023-05-16 | 2023-05-16 | Steel sleeve type concrete tower barrel structure of offshore wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321221774.8U CN219932346U (en) | 2023-05-16 | 2023-05-16 | Steel sleeve type concrete tower barrel structure of offshore wind generating set |
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| Publication Number | Publication Date |
|---|---|
| CN219932346U true CN219932346U (en) | 2023-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321221774.8U Active CN219932346U (en) | 2023-05-16 | 2023-05-16 | Steel sleeve type concrete tower barrel structure of offshore wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219932346U (en) |
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2023
- 2023-05-16 CN CN202321221774.8U patent/CN219932346U/en active Active
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