CN211773506U - Integrally-mounted offshore electrical platform - Google Patents
Integrally-mounted offshore electrical platform Download PDFInfo
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- CN211773506U CN211773506U CN201922245371.7U CN201922245371U CN211773506U CN 211773506 U CN211773506 U CN 211773506U CN 201922245371 U CN201922245371 U CN 201922245371U CN 211773506 U CN211773506 U CN 211773506U
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Abstract
The utility model provides an integrally-installed offshore electrical platform, which comprises a buoyancy tank platform, electrical modules, pile legs, a barrel-shaped foundation, a lifting device and a locking device, wherein the buoyancy tank platform is used for integrally floating the electrical modules; the electrical module is positioned in the middle of the buoyancy tank platform and provided with a plurality of main columns, and the main columns are connected with the top of the buoyancy tank platform through bolts; the number of the pile legs is four, and the pile legs are distributed at four corners of the buoyancy tank platform; the bottom of the pile leg is welded with the barrel-shaped foundation; the outer side surfaces of the pile legs are welded with fixed racks, and the lifting device and the locking device are arranged on the buoyancy tank platform; the lifting device controls the pile legs or the buoyancy tank platform to ascend and descend through the matching of the rotating gear and the rack; the locking device is used for locking the pile legs and the buoyancy tank platform, so that the electrical module, the buoyancy tank platform, the pile legs and the barrel-shaped foundation form an integral structure. The utility model discloses structural style is reasonable, the transportation installation is convenient, can effectively overcome the marine construction window phase short, the low, the high difficult problem of construction cost of efficiency of construction.
Description
Technical Field
The utility model relates to an offshore wind power engineering field especially relates to an offshore electric platform of unit mount formula, is applicable to offshore wind farm power transmission and transformation technical field.
Background
Wind energy is a renewable clean energy, China has the coastline as long as 1.8 km, and the storage amount of offshore wind energy resources is rich, so that the offshore wind energy is of natural advantage for developing offshore wind power. In offshore wind power development, in order to ensure effective transmission of electric energy, an offshore booster station, a converter station and other electric platforms are generally arranged in an offshore wind farm, and the generated energy of an offshore wind power generation set is boosted or converted into current, then is transmitted to a land substation through a submarine cable, and then is connected to a power grid. As an electric energy collection center of an offshore wind farm, an offshore electric platform is a key facility for power transmission and transformation of the offshore wind farm and is also a key for success or failure of development of the whole offshore wind farm. A conventional offshore electrical platform is generally composed of an upper block and a lower foundation, and its common structural form is a jacket platform, which is mainly composed of three parts: superstructure, jacket and piles. The common construction process is as follows: processing and manufacturing of a steel structure → installation of electrical equipment → sinking of a jacket foundation → pile sinking in place → welding or grouting connection of the jacket and the pile → installation of an upper module and the like.
At present, the installation of the traditional jacket type offshore electrical platform has the following restriction factors: 1) the upper module and the lower foundation need to be installed in two steps, and the construction period is long; 2) the sea condition requirement in the offshore construction process is strict, and the construction window period is short; 3) more than four pile foundations are adopted for the jacket foundation, so that the piling construction cost is high; 4) offshore hoisting construction resources are in short supply, and the like. In order to improve the construction efficiency of the offshore electrical platform and reduce the construction risk and cost, an economical, reasonable, convenient, safe and reliable offshore electrical platform structure scheme is required to be provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving above-mentioned engineering technical problem, provide an at sea electrical platform of unit mount formula, structural style is reasonable, the transportation installation is convenient, can effectively overcome the difficult problem that marine construction window phase is short, the efficiency of construction is low, construction cost is high. The utility model adopts the technical proposal that:
an integrally-mounted offshore electrical platform, comprising: the device comprises a buoyancy tank platform, an electrical module, pile legs, a bucket foundation, a lifting device and a locking device, wherein the buoyancy tank platform is used for integrally floating the electrical module; the electrical module is positioned in the middle of the buoyancy tank platform and provided with a plurality of main columns, and the main columns are connected with the top of the buoyancy tank platform through bolts; the number of the pile legs is four, and the pile legs are distributed at four corners of the buoyancy tank platform; the bottom of the pile leg is welded with the barrel-shaped foundation; the outer side surfaces of the pile legs are welded with fixed racks, and the lifting device and the locking device are arranged on the buoyancy tank platform; the lifting device controls the pile legs or the buoyancy tank platform to ascend and descend through the matching of the rotating gear and the rack; the locking device is used for locking the pile legs and the buoyancy tank platform, so that the electrical module, the buoyancy tank platform, the pile legs and the barrel-shaped foundation form an integral structure. This integrally-installed marine electrical platform can transportation by flotation, the flotation tank platform produces in the sea and is greater than the buoyancy of overall structure dead weight can realize whole wet towing shipping transportation, need not special load transport boats and ships, pulls to appointed sea area position by the tow boat, through the decline of elevating gear control spud leg, inserts the bucket type basis to the design degree of depth below the mud face, again through elevating gear lifting flotation tank platform to appointed elevation, utilizes locking device locking spud leg to accomplish marine electrical platform integral erection.
Furthermore, during the process of self-weight sinking and negative pressure pumping sinking of the bucket foundation, a level gauge is arranged at the top of the floating box platform, the process is monitored in real time, and the negative pressure pumping condition of each cabin of the bucket foundation is adjusted, so that the floating box platform is kept horizontal.
Furthermore, the bucket type foundation sinks through self weight and suction to be in place, a water and gas pipeline is arranged in the bucket type foundation and is connected with a water and gas control system on the upper portion of the buoyancy tank platform through the inside of the pile leg.
Furthermore, the distance between the pile leg and the outer edge of the buoyancy tank platform is larger than 1 time of the diameter of the pile leg, so that the structural damage of the buoyancy tank platform caused by stress concentration caused by a boundary effect is avoided. The pile legs are the same as the barrel-shaped foundations in number, and the pile legs are welded with the barrel-shaped foundations together.
Furthermore, the lifting device is controlled by hydraulic pressure, and the rotation speed of the gear is controlled according to specific sea conditions and the requirements of the pile leg or the electrical module equipment. The lifting device comprises rotating gears which are uniformly distributed around each pile leg and synchronously control the lifting of the pile legs or the buoyancy tank platform; the locking device comprises a hydraulic telescopic cylinder and locking teeth, the hydraulic telescopic cylinder and the locking teeth are uniformly distributed around each pile leg and used for locking the pile legs or the buoyancy tank platform, and the outer sides of the periphery of the pile legs are also respectively provided with a rack which is matched with the rack.
Furthermore, according to the sea level condition, an upper limit plate is arranged at the position, close to the top, of the pile leg, and the upper limit position of the buoyancy tank platform is controlled to be lifted.
Furthermore, after the locking device is locked, a lower limiting plate is welded at the bottom of the buoyancy tank platform and the pile legs, so that the connection strength of the pile legs and the buoyancy tank platform is enhanced.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the advantages of the integrated mounting platform are fully exerted, and the platform structure is compact and reasonable in arrangement; (2) the advantage of integral installation is fully exerted, the platform can be installed at one time, and the construction period is short; (3) the land integral assembly and the sea integral installation can be realized, and the sea construction has strong adaptability to sea conditions; (4) the self-weight of the platform can be utilized for foundation sinking, and large-scale construction equipment such as offshore hoisting, piling and the like is not needed in the construction process; (5) convenient to dismantle and has little environmental pollution. The utility model discloses structural style is reasonable, and it is convenient to transport the installation, is showing and reducing construction cost, very is applicable to the complicated or silt cover bed thick sea area of geological conditions.
Drawings
FIG. 1 is an elevation view of an integrally mounted offshore electrical platform.
FIG. 2 is a side view of an integrally mounted offshore electrical platform.
FIG. 3 is a top view of an integrally mounted offshore electrical platform.
FIG. 4 is a schematic view of an integrally mounted offshore electrical platform lift and lock system.
Fig. 5 is a schematic view of an integrally installed offshore electrical platform barrel infrastructure and water gas piping.
FIG. 6 is a schematic view of the connection of the main column of the electrical module of the integrally installed offshore electrical platform to the pontoon platform.
FIG. 7 is a schematic illustration of an integrally installed offshore electrical platform installed in place.
Fig. 8 is a schematic view of the manufacturing, transporting and installing processes of the present invention.
Detailed Description
To further explain the contents, features and effects of the present invention, the following detailed description of the present invention is made with reference to the accompanying drawings:
(1) as shown in fig. 1 and 2, the electrical module 7 in this example is a four-layer platform structure including a top crane and a helicopter platform, and four main columns 70 are provided or a plurality of auxiliary support columns are provided.
(2) As shown in fig. 1 to 3, four spud legs 5 are arranged at four corners of the pontoon platform 2, and the distance between the spud legs is more than one time of the diameter of the spud leg. The barrel-shaped foundation 1 is of a barrel-shaped structure with an opening at the bottom, the diameter is 10m, the barrel height is 5m, the wall thickness is 5cm, and the top of the barrel-shaped foundation is welded with the pile leg. And a water-gas pipeline 8 is arranged in the pile leg and used for extracting water gas in the barrel-shaped foundation 1 and controlling the foundation to sink and level under negative pressure. A cabin dividing plate 9 is arranged in the barrel-shaped foundation 1, the cabin dividing plate 9 is welded in the barrel-shaped foundation 1, the space in the barrel-shaped foundation 1 is divided into a plurality of cabins by the cabin dividing plate, at least part of the cabins are provided with independent water and gas pipelines 8, and the fine leveling effect is achieved by adjusting negative pressure in different cabins.
(3) As shown in fig. 3 and 4, four sets of lifting and locking systems 3 are provided, each set of lifting and locking system 3 comprises a lifting device 31 and a locking device 32, and the lifting and locking systems 3 are installed on the buoyancy tank platform 2 and control the lifting and locking of the buoyancy tank platform 2 or the pile legs 5. Each group of lifting devices 31 comprises eight rotating gears driven by a motor, and the rotating gears are uniformly distributed around each pile leg 5 to synchronously control the lifting of the buoyancy tank platform 2 or the pile legs 5. Each group of locking devices 32 comprises eight hydraulic telescopic cylinders and locking teeth, the eight hydraulic telescopic cylinders and the locking teeth are uniformly distributed around each pile leg 5 and used for locking the buoyancy tank platform 2 or the pile legs 5, corresponding racks 4 are welded on the front, the rear, the left and the right of each pile leg respectively, and the racks 4 can be meshed with the locking teeth and the rotating gears.
The top of the pile leg is provided with an upper limiting plate 6 for limiting the rising height of the buoyancy tank platform 2, and the top plate 11 of the buoyancy tank platform 2 is provided with guide conical plates 10 corresponding to the positions of the four main columns 70.
(4) In fig. 1 to 6, a barrel-shaped foundation 1, a buoyancy tank platform 2, a lifting and locking system 3, a rack 4, a pile leg 5, an upper limiting plate 6, an electrical module 7, a water gas pipeline 8, a subdivision plate 9, a guide conical plate 10 and a buoyancy tank top plate 11 can be prefabricated on the land. Mounting holes are formed in four corners of the buoyancy tank platform 2 and are sleeved outside the four pile legs 5 through the mounting holes, the electrical module 7 is hoisted to a buoyancy tank top plate 11, the position of the electrical module 7 is determined by guiding and positioning matching of a guiding conical plate 10 and a main column 70, then the main column 70 and the buoyancy tank platform 2 are fixed through bolts, other supporting columns of the electrical module are welded and fixed with the buoyancy tank platform 2 top plate, the electrical module 7 is fixed on the buoyancy tank platform 2 to form an integral mounting platform, the buoyancy tank platform 2 and the pile legs 5 are locked through a locking device 32, and a tugboat or a tugboat and the like are pulled to a designated sea area position.
(5) After the integrally-installed platform reaches the designated sea area position by utilizing the integral floating transportation of the buoyancy tank platform, the pile legs 5 are placed down by utilizing the lifting device 31 until the top of the barrel-shaped foundation 1 and a mud surface form a closed space, and water gas in the foundation cavity is extracted through the water gas pipeline 8, so that the barrel-shaped foundation 1 is sunk under negative pressure and leveled.
(6) The legs 5 are pre-pressed by means of the self-weight of the integrally mounted platform and the lifting device 31. The method of prepressing diagonal pile legs 5 is adopted, namely, the buoyancy tank platform 2 is lifted by two groups of lifting devices 31 in the diagonal direction, and the other two groups of lifting devices 31 in the diagonal direction are loosened, so that the whole weight of the platform is borne by the two prepressed pile legs 5; then, the other two groups of lifting devices 31 lift the buoyancy tank platform 2, and the original lifting devices 31 are loosened; and (3) sequentially and circularly prepressing the pile legs 5 to compress the soil body at the lower part of the cylindrical foundation tightly until the pile legs do not sink any more.
(7) As shown in fig. 7, the buoyancy tank platform 2 is lifted to a design elevation by four sets of lifting devices 31, the buoyancy tank platform 2 and the pile legs 5 are locked by locking devices 32, and then the lower limiting plates 12 are welded on the buoyancy tank platform and the pile legs.
(8) So far, the installation of the integrally-installed offshore electrical platform is completed, and the debugging of the electrical equipment in the electrical module 7, the connection of the submarine cable and other works are carried out.
The utility model discloses preparation, transportation and installation flow gather as shown in figure 8.
The above embodiments are merely preferred technical solutions of the present invention, and it should be understood by those skilled in the art that modifications or substitutions of technical solutions or parameters in the embodiments can be made without departing from the principles and essential conditions of the present invention, and all the modifications or substitutions should be covered within the protection scope of the present invention.
Claims (6)
1. An integrally-mounted offshore electrical platform, comprising: the device comprises a buoyancy tank platform, an electrical module, pile legs, a bucket foundation, a lifting device and a locking device, wherein the buoyancy tank platform is used for integrally floating the electrical module; the electrical module is positioned in the middle of the buoyancy tank platform and provided with a plurality of main columns, and the main columns are connected with the top of the buoyancy tank platform through bolts; the number of the pile legs is four, and the pile legs are distributed at four corners of the buoyancy tank platform; the bottom of the pile leg is welded with the barrel-shaped foundation; the outer side surfaces of the pile legs are welded with fixed racks, and the lifting device and the locking device are arranged on the buoyancy tank platform; the lifting device controls the pile legs or the buoyancy tank platform to ascend and descend through the matching of the rotating gear and the rack; the locking device is used for locking the pile legs and the buoyancy tank platform, so that the electrical module, the buoyancy tank platform, the pile legs and the barrel-shaped foundation form an integral structure.
2. An integrally mounted offshore electrical platform according to claim 1, wherein: the buoyancy of the buoyancy tank platform in the sea is larger than the dead weight of the integral structure, so that integral wet towing transportation can be realized, and special load transportation ships are not needed.
3. An integrally mounted offshore electrical platform according to claim 1, wherein: the pile legs are the same as the barrel-shaped foundations in number, and the pile legs are welded with the barrel-shaped foundations together.
4. An integrally mounted offshore electrical platform according to claim 1, wherein: the lifting device comprises rotating gears which are uniformly distributed around each pile leg and synchronously control the lifting of the pile legs or the buoyancy tank platform; the locking device comprises a hydraulic telescopic cylinder and locking teeth, the hydraulic telescopic cylinder and the locking teeth are uniformly distributed around each pile leg and used for locking the pile legs or the buoyancy tank platform, and the outer sides of the periphery of the pile legs are also respectively provided with a rack which is matched with the rack.
5. An integrally mounted offshore electrical platform according to claim 1, wherein: the bucket type foundation sinks through self weight and suction to be in place, a water and gas pipeline is arranged in the bucket type foundation and is connected with a water and gas control system on the upper portion of the buoyancy tank platform through the inside of the pile leg.
6. An integrally mounted offshore electrical platform according to claim 1, wherein: an upper limiting plate is arranged at the upper part of the pile leg and used for controlling the floating box platform to ascend at a limiting position; after the buoyancy tank platform is in place, a lower limiting plate is welded at the pile legs and the bottom of the platform, so that the connection strength of the pile legs and the buoyancy tank platform is enhanced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922245371.7U CN211773506U (en) | 2019-12-13 | 2019-12-13 | Integrally-mounted offshore electrical platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922245371.7U CN211773506U (en) | 2019-12-13 | 2019-12-13 | Integrally-mounted offshore electrical platform |
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| CN211773506U true CN211773506U (en) | 2020-10-27 |
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| CN201922245371.7U Active CN211773506U (en) | 2019-12-13 | 2019-12-13 | Integrally-mounted offshore electrical platform |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112681274A (en) * | 2020-12-02 | 2021-04-20 | 中国电建集团华东勘测设计研究院有限公司 | Self-floating and self-elevating offshore electrical platform and installation method thereof |
| CN112983748A (en) * | 2019-12-13 | 2021-06-18 | 中国电建集团华东勘测设计研究院有限公司 | Integrally-installed offshore electrical platform and manufacturing and installing method thereof |
| CN114427217A (en) * | 2020-10-29 | 2022-05-03 | 中国电建集团华东勘测设计研究院有限公司 | Integrally-mounted structure for offshore electrical platform and mounting method thereof |
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2019
- 2019-12-13 CN CN201922245371.7U patent/CN211773506U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983748A (en) * | 2019-12-13 | 2021-06-18 | 中国电建集团华东勘测设计研究院有限公司 | Integrally-installed offshore electrical platform and manufacturing and installing method thereof |
| CN112983748B (en) * | 2019-12-13 | 2022-06-14 | 中国电建集团华东勘测设计研究院有限公司 | Integrally-installed offshore electrical platform and manufacturing and installing method thereof |
| CN114427217A (en) * | 2020-10-29 | 2022-05-03 | 中国电建集团华东勘测设计研究院有限公司 | Integrally-mounted structure for offshore electrical platform and mounting method thereof |
| CN112681274A (en) * | 2020-12-02 | 2021-04-20 | 中国电建集团华东勘测设计研究院有限公司 | Self-floating and self-elevating offshore electrical platform and installation method thereof |
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