CN113216710B - Seabed big data center suitable for built offshore wind power plant and construction method - Google Patents

Abstract

The invention provides a seabed big data center suitable for an established offshore wind farm and a construction method thereof, which are arranged on the side without a submarine cable of an offshore booster station; the large submarine data center is completed by rebuilding an existing offshore booster station or expanding the small data platform; the invention provides a general scheme aiming at an on-production offshore wind power plant and aiming at the reconstruction and extension of an established offshore booster station to integrate the application of a large submarine data center.

Description

Seabed big data center suitable for built offshore wind power plant and construction method

Technical Field

The invention relates to the field of ocean engineering, in particular to a fusion technology suitable for an offshore booster station and a seabed big data center in a built offshore wind farm.

Background

In recent years, offshore wind power is developed rapidly in China, and a plurality of offshore wind power plants with different capacities of 200 MW-400 MW are built in coastal areas such as Jiangsu, Zhejiang, Fujian, Guangdong and the like. The invention of the applicant has already proposed a design scheme (application numbers: 202110005696.7, 202110144644.8) for combining a submarine big data center (submarine IDC) and an offshore substation, and the economic benefit of the offshore wind farm is improved while various requirements of the submarine IDC are met.

In the proposed fusion design of the seabed IDC and the offshore substation, the scheme aims at the improvement and integration of the offshore substation structure in the newly-built offshore wind farm. For the constructed offshore booster station, on one hand, the basic type of the booster station cannot be modified because the offshore booster station is already in an operating power generation state, the arrangement and adjustment of an upper block are difficult, and only one deck of the booster station has a margin space; on the other hand, if a large offshore data center platform is newly built in an existing offshore wind farm, the number of the upper module devices is small, the structural size and the weight are smaller than those of the upper module of the transformer substation, and the steel structure cost and the offshore installation cost required by the self-installation type wet towing scheme are relatively high. Therefore, the existing scheme cannot be directly applied to the built offshore booster station. In general, for the fusion application of the subsea IDC and the offshore booster station of the built offshore wind farm, the following problems still need to be solved: firstly, the operations of arrangement and installation of the seabed IDCs, transformation of the booster station and the like are realized at low economic cost; secondly, the problem of interference of seabed IDC installation and maintenance operation on the offshore booster station which is running for generating electricity needs to be solved; thirdly, performing secondary filtration; the IDC on the sea bottom is heavy, an overhauling scheme which does not depend on an auxiliary ship needs to be provided, the overhauling economic cost is reduced, and the economic benefit of the whole wind power plant is improved. In conclusion, it is necessary to improve the prior art scheme, so that the method is suitable for the built offshore wind farm, reduces the resource allocation and process difficulty of construction ships required during offshore installation and maintenance, and improves the engineering economy.

Disclosure of Invention

The invention aims to provide a large submarine data center suitable for different types of built offshore wind farms, aims at the built offshore booster station to reconstruct and expand the built offshore booster station for the built offshore wind farms, integrates the application of the large submarine data center, and provides a general scheme.

The technical scheme adopted by the invention is as follows:

the large submarine data center is suitable for a built offshore wind farm and is characterized in that a submarine IDC module in the large submarine data is arranged on the side without a submarine cable of an offshore booster station;

the seabed big data center comprises a seabed IDC module and a matched service cabin, wherein the seabed IDC module is positioned at the side without a submarine cable of the offshore booster station and is detachably and fixedly connected with a jacket of the offshore booster station through a connecting structure; the service cabin is arranged in an upper block of the offshore booster station;

or, the seabed big data center sets up newly-built small-size data platform, newly-built small-size data platform includes platform and seabed IDC module, set up seabed big data center's auxiliary module on the deck of platform, auxiliary module includes the service compartment, the platform sets up the no sea cable side at marine booster station, is connected with the seabed through jacket and pile foundation, seabed IDC module is fixed the below of platform, with jacket detachably fixed connection of platform. The platform can be used for arranging a larger-scale service cabin. Because no large-scale power transformation equipment is arranged, the weight of the upper auxiliary module is about 1000-1500 tons, and offshore construction can be directly carried out by adopting a hoisting scheme of a small-sized floating crane.

The service cabin can be provided with equipment such as a transformer, a switchboard, a diesel generator, a monitoring system and the like. The transformer is built in an upper block of the offshore booster station to supply power for daily operation of the seabed IDC, and when the 35kV bus is out of power, the diesel generator temporarily supplies power for the large data center to ensure the power supply stability of the data center.

For the newly-built small data platform, a pedestrian bridge is connected between the platform and a deck of the offshore booster station; the platform of the newly-built small data platform adopts a multi-layer structure truss structure, the upper auxiliary module is additionally provided with a life auxiliary module on the platform besides a service cabin, and the pedestrian bridge is arranged on one deck and connected with the deck of the offshore booster station. The pedestrian bridge is rotationally connected with the platform and is tensioned and fixed by a top layer winch before being connected with a deck of the offshore booster station.

For the newly-built small data platform, the jacket adopts a straight four-leg jacket, and the jacket is provided with guide steel pipes which are respectively arranged at the inner sides of four mutually parallel support legs vertical to the horizontal plane and are in sliding connection with the seabed IDC module, so as to limit the balance of the seabed IDC module during descending installation and maintenance floating operation and further protect the jacket foundation and the seabed IDC module; the guide sleeve is arranged on the bottom support frame in the jacket, so that the guide sleeve is used for accurately positioning the seabed IDC module on one hand, and plays a role in supporting the seabed IDC module on the other hand, and the phenomenon that the seabed IDC module deflects to cause other functions of the server or the inside to fail due to uneven mud surface caused by scouring of the inner side of the jacket after long-term service is avoided; the inner side of the jacket is provided with a data cable protection pipe, so that data transmission from the seabed IDC module to the upper auxiliary module is realized, and real-time data calculation and processing of the monitoring module are facilitated.

The seabed IDC module is characterized in that a frame type pressure-resistant cabin array is formed by a pressure-resistant cabin array and a supporting frame, the pressure-resistant cabin array is a plurality of steel cylindrical shell pressure-resistant cabins which are arranged side by side, and a cooling system, an equipment cabin and a water ballast cabin are arranged in the pressure-resistant cabin array. The top of the pressure-resistant cabin can be additionally provided with a water pipe for circulating internal cooling water, so that the heat dissipation effect is improved, and the PUE is further reduced; meanwhile, the pull lugs are arranged on the two sides of the pressure-resistant cabin, so that the stability under the power working conditions of wet towing, bottom sinking and the like is improved.

For the embodiment that the seabed IDC module is arranged outside the horizontal support of the jacket of the offshore booster station, the seabed IDC module is positioned in the overlooking projection area of the upper block of the upper booster station, and no new sea land is additionally added.

For the newly-built small data platform, the seabed IDC module is a frame type pressure-resistant cabin array consisting of a pressure-resistant cabin array and a support frame, and is arranged in the inner space of the jacket of the small data platform; the support frame is formed by welding profile steels, and the guide inserting tips are arranged at the positions of the bottom surface of the frame corresponding to the lower horizontal support plane of the jacket, so that the seabed IDC module can be accurately positioned; the support frame is provided with a sliding positioning column at a position corresponding to the guide steel pipe of the jacket, and the sliding positioning column only supports up-and-down movement of the seabed IDC module. The support frame is provided with a pull lug for assisting the seabed IDC module in marine in-place installation and maintenance operation.

The data and information of the submarine data center are interacted with the onshore centralized control center through the built submarine cable, and the connection and communication with the data center service object are realized through the onshore centralized control center.

The invention also provides a construction method of the seabed big data center suitable for the built offshore wind farm, which is characterized by comprising the following steps:

the upper module of the offshore booster station, the jacket-pile foundation, the onshore centralized control center and the submarine cable are parts of the built offshore wind farm, and the building, the installation and the debugging are completed;

the large submarine data center is completed by rebuilding an existing offshore booster station or expanding the small data platform;

the process of rebuilding the existing offshore booster station comprises the following steps: the seabed IDC module is built on land, and equipment in the service cabin, the connecting channel and the seabed IDC module are debugged and installed on land; the seabed IDC module is a frame type pressure-resistant cabin array consisting of a pressure-resistant cabin array and a support frame; the lower section of the bottom end connecting channel is directly connected with the seabed IDC module, and the rest sections and the seabed IDC are sent to the built offshore booster station together.

Leveling the seabed at the installation site of the seabed IDC module; delivering a frame type pressure-resistant cabin array, discharging ballast water in a pressure-resistant cabin, wet-dragging to the side of a jacket-pile foundation of the offshore booster station, injecting water into the pressure-resistant cabin, and sinking the frame type pressure-resistant cabin array; the supporting frame is welded and fixed with the main leg and the cross brace of the jacket; partial ballast water is discharged from the pressure-resistant cabin, so that the dry weight of the frame type pressure-resistant cabin array is approximately equal to the buoyancy, excessive load is not additionally increased, and the safety of the built project is ensured; installing a service cabin on a deck of an upper block layer of the offshore booster station; connecting and laying pipelines of the pressure-resistant cabin and the service cabin; connecting the upper module with the seabed IDC through a connecting channel by adopting field assembly, and then laying and connecting pipelines between the service cabin and the upper module; finally, performing single debugging of equipment such as a pressure-resistant cabin and a service cabin and the like and integral debugging of a data center, an offshore substation, a submarine cable and a onshore centralized control center;

the installation process of the small data platform is expanded as follows: the platform of the large subsea data center, the service cabin on the platform and the subsea IDC module are built on land, and equipment in the service cabin and the subsea IDC module are debugged and installed on land;

firstly, an integral jacket and a steel pipe pile of a shipping platform are sunk at designed positions to finish leveling and crown plate welding operations; simultaneously transporting the seabed IDC module and the upper auxiliary module, placing the sliding positioning column of the seabed IDC module into a guide steel pipe by adopting a small floating crane, adjusting ballast water, slowly sinking the seabed IDC module and accurately positioning the seabed IDC module in the inner space of the jacket; hoisting and installing an upper auxiliary block to complete the connection of the upper part and the lower part; and (4) lowering the connecting step bridge to complete the offshore positioning, and finally connecting the power supply cable and the data cable by the existing offshore booster station side to complete the corresponding debugging work. During offshore construction, only one power barge and a small floating crane are needed for construction of the ship, the offshore construction is located on the side of the offshore booster station without the submarine cable, the construction process is simple, and the technology is mature.

The seabed IDC module is used for daily maintenance operation, the IDC module directly enters the pressure resistant cabin from the upper service cabin through the connecting channel, the maintenance channel is connected with the service cabin and the pressure resistant cabin, a straight ladder is arranged on the inner side of the pressure resistant cabin, so that personnel can go up and down conveniently, and the maintenance personnel do not need to contact with seawater;

when the expanded seabed IDC module of the small data platform needs to float upwards for maintenance, the underwater robot firstly submerges to the seabed to disconnect a power supply and data cable, a winch pull rope of an upper auxiliary module is fixed at a pull lug of a support frame, ballast water of the seabed IDC module is drained, the buoyancy is improved, and the seabed IDC module is lifted to the sea level along a guide steel pipe under the auxiliary action of the winch to realize maintenance, coating repair and marine organism treatment operation; when in place again, a reverse flow is directly adopted; the process is simple, other auxiliary ships such as a floating crane and the like are not needed, and the engineering economy is high.

When a large seabed data center reconstructed from an existing offshore booster station needs to be floated up for maintenance, an underwater robot cuts and separates the connection part of the edge of the frame type pressure-resistant cabin array and the jacket, ballast water discharged from the frame type pressure-resistant cabin floats up, and then the frame type pressure-resistant cabin is pulled by a tugboat to translate.

The method aims at the integrated fusion application of the established offshore booster station and the seabed IDC, aims at solving the problems of difficult arrangement and adjustment, inconvenient operation and maintenance, interference of construction operation ships during the operation of the wind power plant and the like of the established offshore booster station, arranges the seabed IDC or newly-built large data center platform on the side of the existing offshore booster station without a submarine cable, improves and optimizes the arrangement of various functional modules, shortens the offshore construction period, reduces the construction cost of reconstruction and extension projects, and improves the benefit of the wind power plant. The beneficial effects are as follows:

1) the seabed IDC is positioned in the built offshore wind farm, the difficulty and the cost of land acquisition sea examination and approval are greatly reduced, two feasible schemes are provided according to offshore booster stations under different conditions on the premise of not influencing the functions of the original wind farm, the influence on the built offshore booster stations is small, the applicability is high, and the comprehensive economic benefit of offshore wind farm operation is further improved; particularly, a newly-built small-size data platform carries a daily operation and maintenance and a life auxiliary module required by maintenance of the offshore booster station, and the problem that the operation and maintenance of the unattended offshore booster station are inconvenient is solved.

2) According to the two schemes, the weight of each module is smaller, offshore assembly can be completed only by a small floating crane, the offshore construction technology is mature, and the occupied ship resources are less; the seabed IDC module is located beside the established jacket or on the inner side of the jacket foundation of the newly-built platform, the established submarine cable is adopted for data transmission, the functional requirements of the seabed IDC module are met, the extra sea area is not increased or a small amount of sea area is not increased, and the space utilization rate is high.

3) Electric energy required by the operation of the seabed IDCs is directly provided by the booster station of the wind power plant, namely, the electric energy consumed by the seabed IDCs is renewable clean energy, and the method conforms to the concepts of multi-energy complementation, energy conservation and emission reduction. The storage battery chamber, the diesel generator, the distribution and voltage stabilization equipment and the like are arranged on the upper module of the seabed IDC platform, so that the stability and the continuity of IDC power supply are further guaranteed.

4) The operation and maintenance are simple, convenient and feasible. The device is attached to a seabed IDC module reconstructed to be an existing booster station, and can directly enter the cabin through the connecting channel when unnecessary returning to a factory for maintenance, and maintenance personnel do not need to contact with seawater, so that the operation and maintenance are convenient; when the pressure-resistant cabin array needs to be returned to a factory for maintenance, the pressure-resistant cabin array can be directly separated from the built offshore booster station, and equipment replacement is more convenient. Depending on the seabed IDC module of the newly-expanded small-sized platform, the pressure-resistant cabin adopts a type of combining a ballast water cabin and an equipment cabin, when the maintenance on the water surface is needed, the ballast water in the ballast water cabin can be reduced, the pressure-resistant cabin is lifted to be close to the water surface, and the auxiliary operation of a floating crane ship is not needed to be additionally adopted by utilizing an upper chunk winch.

5) The seabed IDC module is detachably connected with the jacket structure, namely the seabed IDC module is connected with the jacket through a temporary steel pipe welding part in the scheme of reconstructing the existing booster station, and the seabed IDC module is connected with the jacket through a lifting mechanism of a guide steel pipe in the scheme of newly building a small data platform, so that the positioning precision can be guaranteed, and the complexity in installation and maintenance can be reduced. Meanwhile, the seabed IDC module is wholly or partially positioned in a shielding area of an upper structure and is not influenced by ship leaning, ship anchoring and the like.

Drawings

FIG. 1 is a schematic view of the total plan position of a wind farm of the present invention.

Fig. 2-1, 2-2 and 2-3 are respectively a seabed IDC elevation, a plane schematic diagram and a wiring diagram attached to an established offshore booster station according to a first embodiment of the invention.

Fig. 3, 3-1 and 3-2 are a three-dimensional schematic view of a subsea IDC module, a cross-sectional view of a connecting pipe, and a cross-sectional view of a pressure vessel, respectively, according to a first embodiment of the present invention.

Fig. 4 is a flow chart of a subsea IDC installation process attached to an existing offshore booster station according to a first embodiment of the present invention.

Fig. 5 is a schematic view of a subsea IDC overhaul state attached to an existing offshore booster station according to a first embodiment of the present invention.

Fig. 6 is an elevation view illustrating the overall structure of a newly built seabed IDC attached to an already built offshore booster station according to the second embodiment of the present invention.

Fig. 7, 7-1, 7-2, 7-3 and 7-4 are a plan view of a subsea IDC module attached to a newly built subsea IDC of an already built offshore booster station, a plan view of the infrastructure of the offshore booster station, and a detailed view of the elevation, side and subsea IDC module connection to a jacket, respectively, according to a second embodiment of the present invention.

FIGS. 8-11 are flow charts of installation processes of newly built seabed IDCs attached to an existing offshore booster station in the second embodiment of the invention.

Fig. 12 is a schematic view of a newly built subsea IDC maintenance state attached to a built offshore booster station according to a second embodiment of the present invention.

Detailed Description

For further explanation of the contents, features and effects of the present invention, the following two embodiments are respectively described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the arrangement of the wind power plant related to the invention is basically the same as that of an established offshore wind power plant, and the wind power plant consists of a wind turbine 1, a submarine cable 2, an offshore booster station 3 and an onshore centralized control center 5. The fan 1 realizes the conversion from wind energy to electric energy; the submarine cable 2 realizes the transmission of clean renewable energy; the offshore booster station 3 realizes voltage level promotion and supplies power to the small data platform 4 and the seabed IDC; the onshore centralized control center 5 realizes the functions of power grid access, centralized control and the like. The implementation mode of the seabed IDC is selected according to the scheme of rebuilding and expanding the booster station, so that the functions of cloud computing, cloud service, real-time monitoring data storage and the like are realized, wherein if a small-sized data platform 4 is adopted, the seabed IDC can also carry the functions of life assistance and the like. The seabed IDC electric energy is directly provided by an established 35kV bus of the offshore booster station,

before the installation of the seabed IDCs, the fan 1, the submarine cable 2, the offshore booster station 3 and the onshore centralized control center 5 are constructed and put into operation, the seabed IDC module of the seabed IDCs is positioned on the side of the constructed offshore booster station 3 without the submarine cable, and in the second embodiment, the seabed IDC module is positioned on the east side of the offshore booster station 3, the center distance is 50m, and only a small amount of used sea area needs to be increased. In the first embodiment, the subsea IDC module 8 is located within the maximum overhead projection range of the offshore booster station 3, and is also located on the side of the offshore booster station 3 without the submarine cable, so that the laid submarine cable is not affected by the extra sea area.

Example one

As shown in fig. 1-5, the subsea IDC attached to the established offshore booster station 3 comprises a subsea IDC module 8 and a service bay. The subsea IDC module 8 comprises several communicating pressure chambers 81, connecting conduits 82, connecting structures 83, connecting channels 84 and seats 85. The offshore booster station 3 comprises an offshore booster station upper block 31, an offshore booster station jacket-pile foundation 32 and an offshore booster station sea cable protection pipe 33; the service bay includes a transformer substation bay 91, a diesel generator bay 92, and a monitoring bay 93. The relationship of each structure is as follows: the seabed IDC module 8 is located on the side without the submarine cable of the jacket-pile foundation 32 of the offshore booster station, the seabed IDC module 8 is connected with the jacket-pile foundation 32 of the offshore booster station in a welding mode through a connecting structure 83, the seabed IDC module 8 is connected with the service cabin through a connecting pipeline 82, the connecting pipeline 82 is connected with the jacket-pile foundation 32 of the offshore booster station in a welding mode through a connecting rib plate 821, the service cabins are built on the land, single debugging is completed, the seabed IDC module is installed in the upper block 31 of the offshore booster station, and after offshore installation, the laying and connection of pipelines among the power transformation cabin 91, the diesel generator cabin 92, the monitoring cabin 93 and the upper block 31 of the offshore booster station are completed according to a wiring diagram 94. As shown in fig. 2-2, the subsea IDC module 8 is located inside the projected area of the platform of the established offshore booster station 3, and no new sea land is additionally added.

As shown in fig. 3 and 3-1, the subsea IDC module 8 includes 4 pressure-resistant compartments 81 horizontally disposed in parallel, the pressure-resistant compartments 81 are connected by a connecting channel 84, the pressure-resistant compartments 8 are fixed by a supporting frame 85, a sinking-prevention plate 86 is disposed at the bottom of the subsea IDC module 8, the cross section of the connecting pipeline 82 is as shown in fig. 3-1, and a straight ladder 825 and a cable channel 826 are disposed inside the connecting pipeline. A top layer cable pipeline interlayer 811, a middle layer server layer 812 and a bottom layer ballast water tank layer 813 are arranged in the pressure-resistant cabin 81, corresponding mechanical parts are additionally arranged according to the use condition of equipment, connecting channel interfaces 814 are arranged between the cabins and at the connecting position with an upper module, and a circulating cooling water device 815 is arranged at the top of the pressure-resistant cabin 81, so that the PUE is further reduced.

As shown in fig. 4, the construction steps of this embodiment are:

1) the construction of each part of the seabed IDC module 8 and each service cabin is completed on land, and the debugging of the monomer is completed at the same time;

2) adjusting ballast water in the pressure-resistant cabin 81 to enable the seabed IDC module 8 to float on the water surface, wet-dragging the seabed IDC module 8 to a preset installation position through a tug boat, and selectively performing wet-dragging and installation construction at a low tide level to enable a connecting flange of a connecting pipeline 82 to be located on the water surface;

3) adding ballast water in the pressure resistant cabin 81 to enable the seabed IDC module 8 to slowly sink and land on the seabed, and welding a connecting structure 83 by a diver underwater to complete the connection of the seabed IDC module 8 and the offshore booster station jacket-pile foundation 32;

4) reducing ballast water in the pressure-resistant tank 81 to make the dry weight of the support frame 85 and the pressure-resistant tank 81 approximately equal to buoyancy;

5) the lower subsection 822, the middle subsection 823 and the upper subsection 824 of the connecting channel are sequentially installed and connected through flanges;

6) a power transformation and distribution cabin 91, a diesel engine cabin 92 and a monitoring cabin 93 are installed on a deck of the upper block 31 of the offshore booster station, and pipeline laying and connection debugging construction between a service cabin and the pressure resisting cabin 81 and between the service cabin and the upper block 31 of the offshore booster station are carried out.

As shown in fig. 5, when the subsea IDC module 8 of the first embodiment needs to be floated up for maintenance, the connection structure 83 is cut off, the connection pipe 82 is separated from the mating flange of the subsea IDC module 8, the ballast water in the pressure tank 81 is discharged and floated up, and the block is towed by a tugboat to a land plant for maintenance and equipment replacement.

Example two

As shown in fig. 1, 6-12. The offshore booster station 3 comprises an offshore booster station upper block 31, an offshore booster station jacket-pile foundation 32 and an offshore booster station sea cable protection pipe 33. And a newly-built small data platform is arranged depending on the center of the seabed IDC of the built offshore booster station 3, and comprises a platform 4, a seabed IDC module 6 and an upper auxiliary module 41. The small data platform is positioned on the no-sea-cable side of the built offshore booster station 3 (the east side of the platform of the offshore booster station 3), and the existing offshore booster station sea cable protection pipes 33 are positioned on the other three sides of the platform. The platform 4 of the compact data platform of the present invention comprises an integral straight four-legged jacket 42 and steel pipe piles 43. The upper auxiliary module 41 is provided with a power distribution and voltage stabilization device of the seabed IDC, a diesel generator, an emergency storage battery, a real-time monitoring module, a life auxiliary module 95 and the like according to requirements. A subsea IDC module 6 is located at the bottom of the platform 4. A hoisting winch 411 is arranged on one deck of the upper auxiliary module 41 near the supporting legs, a lifting rope 412 on the hoisting winch is positioned on one deck in the on-position state, and the hoisting winch passes through one deck to be lowered to the position near the seabed IDC module 6 through a reserved opening of the deck in the maintenance process. A connecting step bridge 414 is arranged on the position, close to the offshore booster station 3, of the first deck, the connecting step bridge 414 is obliquely tensioned and fixed by a top layer fixed winch 413 before being installed in place, and the connecting step bridge 414 is connected with the booster station upper block 31 and the upper auxiliary module 41 in place, so that operation and maintenance operations of overhauling of the offshore booster station 3 and the seabed IDC center are facilitated. The submarine IDC module 6 is connected with the offshore booster station 3 through a power supply cable 71, the data cable 72 of the submarine IDC module 6 is connected with the four-leg jacket 42, the power supply submarine cable 71 is directly attached to the connecting step bridge 414, underwater cable laying is not needed, and the construction process is simple and convenient.

As shown in fig. 7, 7-1, 7-2, 7-3 and 7-4, a guide sleeve 421 is provided in a horizontal support position under the four-legged jacket 42, which serves to support and accurately position the subsea IDC module 6. A guide steel pipe 422 and a cable/data cable protection pipe 423 are provided inside the four-legged jacket 42.

The subsea IDC module 6 is composed of a support frame 61, a plurality of pressure-resistant chambers 62 arranged in an array, a sliding positioning device 63, and mounting and maintenance pull lugs 64. The pressure-resistant cabin 62 is similar to the pressure-resistant cabin 81 in the first embodiment in structural arrangement, and comprises a top cable pipeline interlayer, a middle server layer and a bottom ballast water cabin layer, corresponding mechanical parts are additionally arranged according to the use condition of equipment, and a circulating cooling water device is arranged at the top of the pressure-resistant cabin. In order to reduce disturbance of the internal servers during live operation, the ballast tank 621 is filled with ballast water to improve stability of the tank. A guide prong 611, which is in a mating engagement with the guide sleeve 421, is welded to the bottom of the support frame 61 to provide precise positioning of the subsea IDC module 6. The four-leg jacket 42 and the support frame 61 are slidably connected with each other as shown in fig. 7-4, the guide steel pipe 422 extending from above the sea surface to the sea bottom is fixedly welded with the four-leg jacket 42 through the support steel pipe 424, and the sliding positioning column 631 is welded with the support frame 61 through the connecting round steel 632. The guide steel pipe 422 is a non-closed guide round pipe, and a notch with a width slightly larger than the diameter of the connecting round steel 632 is formed in the side of the support frame 61, so that the sliding positioning device 63 can slide up and down, and the in-plane movement of the seabed IDC module 6 is limited. Totally, 6 groups of sliding guide devices are arranged, and each group of 3 guide cylinders can ensure the structural strength and the limiting capacity under the action of waves and currents and can prevent the equipment from being influenced by the inclination of the seabed IDC module 6 during sinking or lifting.

As shown in fig. 8 to 11, it is a flow chart of the marine installation process of the present embodiment, and the flow chart is:

1) as shown in fig. 8, the four-legged jacket 42 and the steel pipe pile 43 are first shipped, and floating crane sinking, piling, and leveling work are performed at the design position.

2) As shown in fig. 9, the subsea IDC module 6 and the upper auxiliary module 41 are shipped simultaneously, and a small floating crane is also used to place the sliding positioning post 631 in the subsea IDC module 6 into the guiding steel tube 422, adjust the ballast water in the ballast water tank 621, and slowly sink the subsea IDC module 6 so that the guiding insertion tip 611 is located inside the guiding sleeve 421, thereby achieving precise positioning.

3) As shown in fig. 10, the four-legged jacket 42 is installed by using the same-seat floating crane to complete the upper and lower welding connection.

4) As shown in fig. 11, the connecting step bridge 414 is slowly lowered by controlling the top fixed winch 413, so as to realize the passage connection between the upper auxiliary module 41 and the upper block 31 of the offshore booster station, and the power supply cable 71 and the data cable 72 are connected to the pressure-resistant cabin 62 through the cable and data cable protection tube 423, so as to finally complete the offshore positioning.

As shown in fig. 12, in the second embodiment, when the subsea IDC module 6 needs to go out of the sea for maintenance and other related operations, the lifting rope 412 can be lowered to the pulling lug 64 to complete the fixation, the power supply cable 71 and the data cable 72 are disconnected from the subsea IDC module 62, the ballast water in the ballast water tank 621 is drained, the subsea IDC module 6 is lifted by the aid of the hoisting winch 411, the subsea IDC module 62 leaves the sea level, and workers can enter the inside through the entrance and exit of the pressure-resistant tank cylindrical top equipment to perform related maintenance operations, such that marine life treatment, paint repair and other operations can be achieved on the sea. The same reverse step after completion of the operation allows the sea-bottom IDC module 6 to be re-seated without the need for additional auxiliary vessel operations.

The above embodiments are merely two preferred embodiments 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 principle and essence of the present invention, and all of them should be covered within the protection scope of the present invention.

Claims (8)

1. The large submarine data center is suitable for a built offshore wind farm and is characterized in that a submarine IDC module in the large submarine data is arranged on the side without a submarine cable of an offshore booster station;

the seabed big data center comprises a seabed IDC module and a matched service cabin, wherein the seabed IDC module is positioned at the side without a submarine cable of the offshore booster station and is detachably and fixedly connected with a jacket of the offshore booster station through a connecting structure; the service cabin is arranged in an upper block of the offshore booster station;

or, the big data center in seabed sets up newly-built small-size data platform, newly-built small-size data platform includes platform and seabed IDC module, set up big data center's in seabed auxiliary module on the deck of platform, auxiliary module includes the service compartment, the platform sets up the no submarine cable side at marine booster station, through the jacket and the pile foundation of platform are connected with the seabed, seabed IDC module is fixed the below of platform, with jacket detachably fixed connection of platform.

2. The large subsea data center for an established offshore wind farm according to claim 1, characterized in that a pedestrian bridge is connected between the platform and the deck of the offshore booster station; the platform of the newly-built small-size data platform adopts a multi-layer structure truss structure, a life auxiliary module is additionally arranged on the platform besides a service cabin, and the pedestrian bridge is connected between the deck of the offshore booster station and the deck of the first-layer deck.

3. The subsea big data center for an established offshore wind farm according to claim 2, wherein the pedestrian bridge is rotatably connected with the platform and tensioned and fixed by a top layer winch before being connected with a deck of the offshore booster station.

4. The big subsea data center suitable for the built offshore wind farm according to claim 1, wherein for the newly built small data platform, the jacket adopts a straight four-leg jacket, and the jacket is provided with guide steel pipes respectively arranged on the inner sides of four mutually parallel support legs perpendicular to the horizontal plane and in sliding connection with the subsea IDC module, so as to limit the balance of the subsea IDC module during descending installation and maintenance floating operation, and further protect the jacket foundation and the subsea IDC module; the guide sleeve is arranged on the bottom support frame in the jacket, so that the guide sleeve is used for accurately positioning the seabed IDC module on one hand, and plays a role in supporting the seabed IDC module on the other hand, and the phenomenon that the seabed IDC module deflects to cause other functions of the server or the inside to fail due to uneven mud surface caused by scouring on the inner side of the jacket after long-term service is avoided; the inner side of the jacket is provided with a data cable protection pipe.

5. The large subsea data center suitable for the built offshore wind farm according to claim 1, wherein the subsea IDC module comprises a framed pressure resistant cabin array consisting of a pressure resistant cabin array and a support frame, and the subsea IDC module is disposed outside a lower horizontal support of a jacket of the offshore booster station or in an inner space of a jacket of a small data platform; when the seabed IDC module is detachably and fixedly connected with a jacket of the offshore booster station through the connecting structure, the seabed IDC module is positioned in the overlooking projection area of the upper block of the upper booster station, and no new sea land is additionally added.

6. The big subsea data center suitable for the built offshore wind farm according to claim 4, wherein for the newly built small data platform, the subsea IDC module comprises a frame-type pressure resistant cabin array consisting of a pressure resistant cabin array and a support frame, and the subsea IDC module is arranged in the inner space of the jacket of the small data platform; the supporting framework is formed by welding profile steel, and the guide inserting tips are arranged at the positions of the bottom surface of the framework, which correspond to the lower horizontal supporting plane of the jacket, so that the seabed IDC module can be accurately positioned conveniently; the support frame is provided with a sliding positioning column at a position corresponding to the guide steel pipe of the jacket, and the sliding positioning column only supports the up-and-down movement of the seabed IDC module.

7. The offshore big data center suitable for the built offshore wind farm according to claim 1, wherein the data and information of the offshore big data center are interacted with the onshore centralized control center through the built submarine cable, and are communicated with the data center service object through the onshore centralized control center.

8. The method for constructing a large subsea data center for a built offshore wind farm according to any one of claims 1 to 7, characterized by:

the upper module of the offshore booster station, the jacket-pile foundation, the onshore centralized control center and the submarine cable are parts of the built offshore wind farm and are built, installed and debugged;

the large submarine data center is completed by rebuilding an existing offshore booster station or expanding the small data platform;

the process of rebuilding the existing offshore booster station comprises the following steps: the seabed IDC module is built on land, and equipment in the service cabin, the connecting channel and the seabed IDC module are debugged and installed on land; the seabed IDC module is a frame type pressure-resistant cabin array consisting of a pressure-resistant cabin array and a support frame; the lower section of the bottom end connecting channel is directly connected with the seabed IDC module, and the rest sections and the seabed IDC are sent to the built booster station together;

leveling the seabed at the installation site of the seabed IDC module; delivering a frame type pressure-resistant cabin array, discharging ballast water in a pressure-resistant cabin, wet-dragging to the side of a jacket-pile foundation of the offshore booster station, injecting water into the pressure-resistant cabin, and sinking the frame type pressure-resistant cabin array; the supporting frame is welded and fixed with the main legs and the cross braces of the jacket; partial ballast water is discharged from the pressure-resistant cabin, so that the dry weight of the frame-type pressure-resistant cabin array is approximately equal to the buoyancy, excessive load is not additionally added, and the safety of the built project is ensured; installing a service cabin on a deck of an upper block layer of the offshore booster station; connecting and laying pipelines of the pressure-resistant cabin and the service cabin; connecting the upper module with the seabed IDC through a connecting channel by adopting field assembly, and then laying and connecting pipelines between the service cabin and the upper module; finally, performing single debugging of equipment such as a pressure-resistant cabin and a service cabin and the like and integral debugging of a data center, an offshore substation, a submarine cable and a onshore centralized control center;

the installation process of the small data platform is expanded as follows: the platform of the large subsea data center, the service cabin on the platform and the subsea IDC module are built on land, and equipment in the service cabin and the subsea IDC module are debugged and installed on land;

firstly, transporting the integral jacket and the steel pipe pile of a platform, sinking the jacket and the pile at the designed positions, and finishing leveling and crown plate welding operation; simultaneously transporting the seabed IDC module and the upper auxiliary module, placing the sliding positioning column of the seabed IDC module into a guide steel pipe by adopting a small floating crane, adjusting ballast water, slowly sinking the seabed IDC module and accurately positioning the seabed IDC module in the inner space of the jacket; hoisting and installing an upper auxiliary block to complete the connection of the upper part and the lower part; lowering the connecting step bridge to complete the offshore positioning, and finally connecting the power supply cable and the data cable by the existing offshore booster station side to complete the corresponding debugging work;

the seabed IDC module is used for daily maintenance operation, the IDC module directly enters the pressure resistant cabin from the upper service cabin through the connecting channel, the maintenance channel is connected with the service cabin and the pressure resistant cabin, a straight ladder is arranged on the inner side of the pressure resistant cabin, so that personnel can go up and down conveniently, and the maintenance personnel do not need to contact with seawater;

when the expanded seabed IDC module of the small data platform needs to float upwards for maintenance, the underwater robot firstly submerges to the seabed to disconnect a power supply and data cable, a winch pull rope of an upper auxiliary module is fixed at a pull lug of a support frame, ballast water of the seabed IDC module is drained, the buoyancy is improved, and the seabed IDC module is lifted to the sea level along a guide steel pipe under the auxiliary action of the winch to realize maintenance, coating repair and marine organism treatment operation; when in place again, a reverse flow is directly adopted;

when a large seabed data center reconstructed from an existing offshore booster station needs to be floated up for maintenance, an underwater robot cuts and separates the connection part of the edge of the frame type pressure-resistant cabin array and the jacket, ballast water discharged from the frame type pressure-resistant cabin floats up, and then the frame type pressure-resistant cabin is pulled by a tugboat to translate.

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