Underwater caisson type data center structure

Abstract

The invention relates to the technical field of data center construction in ocean engineering, and discloses an underwater caisson type data center structure which comprises an integrated gravity type composite structure caisson, a data center module, a heat dissipation system, a data transmission system and a wind power system. The integrated gravity type composite structure caisson comprises a vertical shaft section, a frustum section and a cylindrical section which are sequentially and fixedly connected from top to bottom, the top of the vertical shaft section extends out of the water surface, and a balance weight structure is arranged at the bottom of an inner cavity of the cylindrical section. Annular reinforcing ribs are mounted in inner cavities of the frustum section and the cylindrical section; the data center modules are mounted in the inner cavities of the frustum section and the cylindrical section, and are arranged in a matrix manner; the heat dissipation system is mounted on the surface of the data center module and is communicated with seawater; the data transmission system is installed in an inner cavity of the vertical shaft section, and the data center module is connected into a land backbone network through the data transmission system. The occupied area and energy consumption of the data center can be reduced, the overall structural strength is improved, and the operation stability is improved.

Description

Technical Field

[0001] This invention relates to the field of data center construction technology in marine engineering, and in particular to an underwater submerged box-type data center structure. Background Technology

[0002] Current data center construction and underwater deployment technologies face the following challenges. First, a single 10,000 racks in a land-based data center requires approximately 20 acres of land, with land costs accounting for 15%-20% of the total investment. Deployment is limited in areas with scarce land resources. Second, traditional air conditioning cooling systems account for 30%-40% of total energy consumption, with PUE (Power Usage Effectiveness) generally exceeding 1.5, significantly lagging behind the requirements of the "dual-carbon" policy and resulting in severe energy waste.

[0003] Third, existing underwater data centers use cylindrical sealed hulls, secured only by anchor chains. In extreme coastal environments with a water depth of 45 meters and a wave height of 12 meters, the maximum horizontal displacement of the hull can reach 0.8 meters, easily causing loosening of rack interfaces and data transmission interruptions. Some rectangular caisson designs pose safety hazards such as structural cracking and water leakage due to stress concentration at the corners. Fourth, most existing underwater data centers rely on terrestrial power grids for power supply, with transmission link losses reaching 8%-12%, and lack supporting energy storage units. Power outages are easily triggered by fluctuations in offshore wind power and other renewable energy (power generation) operations. A few designs with integrated green electricity systems are not integrated with the caisson structure, occupying additional sea area. Furthermore, the power supply links and data transmission links are intersected, easily causing mutual interference during maintenance and affecting system stability.

[0004] To address this, an underwater sunken box-type data center structure is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an underwater submerged data center structure, which aims to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides an underwater submerged box-type data center structure, comprising: An integrated gravity-type composite structure caisson includes a vertical shaft section, a frustum section, and a cylindrical section fixedly connected from top to bottom. The top of the vertical shaft section extends above the water surface, and a counterweight structure is provided at the bottom of the inner cavity of the cylindrical section. Annular reinforcing ribs are installed in the inner cavities of both the frustum section and the cylindrical section. A data center module is installed in the inner cavity of the frustum section and the cylindrical section, and the data center modules are arranged in a matrix. A heat dissipation system is installed on the surface of the data center module and is connected to seawater. A data transmission system is installed inside the shaft section, and the data center module connects to the terrestrial backbone network through the data transmission system. A wind power system is installed at the top of the shaft section and is electrically connected to the data center module.

[0007] According to the underwater caisson-type data center structure provided by the present invention, the integrated gravity composite structure caisson further includes: A top sealing plate is fixedly installed on the top of the vertical shaft section, and the wind power system is installed on the top sealing plate; The deck has several decks arranged at intervals from top to bottom, and several decks are installed on the inner sidewalls of the frustum section and the inner sidewalls of the cylindrical section; the data center module is installed on the deck. The bulkhead is provided in a plurality of such bulkheads. The bottom of the bulkhead is fixedly installed on the inner bottom wall of the cylindrical section, and the top is fixedly connected to the inner top wall of the frustum section. The plurality of bulkheads are arranged at intervals and are arranged perpendicular to the deck. A bottom sealing plate is fixedly installed at the bottom of the cylindrical section.

[0008] According to the present invention, an underwater submerged data center structure is provided, wherein the data center module includes a plurality of cabinets installed on the deck, and the plurality of cabinets are arranged in a matrix; the plurality of cabinets are connected to the terrestrial backbone network through the data transmission system, and the wind power system is electrically connected to the plurality of cabinets; The heat dissipation system includes a main heat exchanger tube and several U-shaped heat exchanger tubes. The U-shaped heat exchanger tubes are installed on the surface of the cabinet. The main heat exchanger tube is installed on the inner wall of the cylindrical section. The several U-shaped heat exchanger tubes are all connected to the main heat exchanger tube. A return water pipe is installed at one end of the main heat exchanger tube, and a seawater inlet is installed at the other end. The seawater inlet is located below the cylindrical section. A seawater outlet is provided at the end of the return water pipe away from the main heat exchanger tube. The seawater outlet is located above the cylindrical section.

[0009] According to the present invention, an underwater submerged box-type data center structure is provided, wherein the wind power system includes: Offshore wind power access module, wherein the offshore wind power access module is provided in several groups, and the several groups of offshore wind power access modules are installed on the top sealing plate; A tidal energy access module, wherein the tidal energy access module is installed at the bottom of the cylindrical section; A prefabricated substation is installed on the top sealing plate, and the tidal energy access module and several sets of offshore wind power access modules are electrically connected to the prefabricated substation. An energy storage unit is installed in the inner cavity of the vertical shaft section. The prefabricated substation is electrically connected to the energy storage unit, and several cabinets are electrically connected to the energy storage unit via flame-retardant cables.

[0010] According to the present invention, an underwater submerged data center structure is provided, wherein the data transmission system includes a core switch installed in the cavity of the vertical shaft section, a plurality of cabinets are connected to the core switch via optical fiber, and the core switch is connected to the terrestrial backbone network via submarine optical cable.

[0011] According to the present invention, an underwater submerged data center structure is provided, wherein the counterweight structure includes several sets of ballast chambers, the several sets of ballast chambers are installed at intervals at the bottom of the inner cavity of the cylindrical section, and the ballast chambers are filled with iron sand.

[0012] According to the present invention, an underwater submerged data center structure is provided, wherein the outer diameter of the cylindrical section is 80m, the height of the cylindrical section is 20m, the height of the frustum section is 10m, the top diameter of the frustum section is 30m, the top surface of the shaft section is 10m above the water surface, and the outer diameter of the shaft section is 20m; the bottom surface of the cylindrical section is 5m from the seabed. The vertical shaft section, the conical section, and the cylindrical section are all constructed of concrete, and the wall thickness of each section is 2m.

[0013] According to the present invention, the underwater caisson-type data center structure has a wall thickness of 0.8m, a distance of 5m between two adjacent decks, a wall thickness of 0.4m between two adjacent bulkheads, and a distance of 15.2m between two adjacent bulkheads.

[0014] According to the present invention, an underwater sunken box-type data center structure is provided, wherein the distance between two adjacent cabinets is 1.2m.

[0015] According to the present invention, an underwater submerged data center structure is provided, wherein the top surface of the top sealing plate is provided with a helicopter landing pad, the vertical shaft section is provided with a maintenance passage, and the top sealing plate is provided with an entrance communicating with the maintenance passage.

[0016] The present invention discloses the following technical effects: This invention adopts an integrated structure of gravity-type composite caisson, heat dissipation system, and wind power system, optimizing the structure and layout, simplifying the maintenance process, reducing heat dissipation energy consumption by utilizing natural ocean heat dissipation, reducing additional investment, significantly reducing operating energy costs, realizing convenient cabinet expansion and equipment maintenance, and improving operational efficiency; it can fully integrate the advantages of marine natural conditions and engineering structure to achieve the goal of efficient, stable and environmentally friendly operation. This invention uses an integrated gravity-type composite structure caisson as the core carrier, deeply integrating the natural heat dissipation characteristics of the ocean with a green electricity direct supply system. It aims to solve the core problems of structural instability, high energy consumption, and low green electricity utilization, reduce the footprint and energy consumption of data centers, improve operational stability, and fill the gap in the field of large-scale underwater data center deployment. This invention effectively disperses the horizontal load brought by waves by installing annular reinforcing ribs in the inner cavities of the frustum and cylindrical sections. It enhances the anti-overturning ability of the caisson through the gravity balance of the counterweight structure, improves the overall structural strength, is suitable for coastal areas, relies on marine resources, and can achieve long-term stable operation in water flow environments. It is especially suitable for underwater deployment scenarios of large-scale cloud computing data centers and meets the long-term service requirements of marine engineering structures. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an isometric view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0019] The components are: 1. Shaft section; 2. Frustum section; 3. Cylindrical section; 4. Data center module; 5. Wind power system; 6. Top sealing plate; 7. Deck; 8. Bulkhead; 9. Bottom sealing plate; 10. Ballast tank; 11. Maintenance passage. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Reference Figures 1-2 This invention provides an underwater submerged data center structure, comprising: The integrated gravity composite structure caisson includes a vertical shaft section 1, a frustum section 2, and a cylindrical section 3, which are fixedly connected from top to bottom. The top of the vertical shaft section 1 extends above the water surface, and the bottom of the inner cavity of the cylindrical section 3 is equipped with a counterweight structure. Both the frustum section 2 and the cylindrical section 3 are equipped with annular reinforcing ribs in their inner cavities. Data center module 4 is installed in the inner cavity of frustum section 2 and cylindrical section 3, and the data center module 4 is arranged in a matrix. The heat dissipation system is installed on the surface of data center module 4 and is connected to seawater. The data transmission system is installed inside the shaft section 1, and the data center module 4 is connected to the terrestrial backbone network through the data transmission system. Wind power system 5 is installed at the top of shaft section 1 and is electrically connected to data center module 4; This invention adopts an integrated structure of gravity-type composite caisson, heat dissipation system, and wind power system 5, which optimizes the structure and layout, simplifies the maintenance process, reduces heat dissipation energy consumption by utilizing natural ocean heat dissipation, reduces additional investment, significantly reduces operating energy costs, and makes it convenient for cabinet expansion and equipment maintenance, thereby improving operational efficiency. It can fully integrate the advantages of marine natural conditions and engineering structure to achieve the goals of high efficiency, stability, and environmental protection. This invention uses an integrated gravity-type composite structure caisson as the core carrier, deeply integrating the natural heat dissipation characteristics of the ocean with a green electricity direct supply system. It aims to solve the core problems of structural instability, high energy consumption, and low green electricity utilization, reduce the footprint and energy consumption of data centers, improve operational stability, and fill the gap in the field of large-scale underwater data center deployment. This invention effectively disperses the horizontal load brought by waves by installing annular reinforcing ribs in the inner cavities of the frustum and cylindrical sections. It enhances the anti-overturning ability of the caisson through the gravity balance of the counterweight structure, improves the overall structural strength, is suitable for coastal areas, relies on marine resources, and can achieve long-term stable operation in water flow environments. It is especially suitable for underwater deployment scenarios of large-scale cloud computing data centers and meets the long-term service requirements of marine engineering structures.

[0023] Further optimization of the design includes: The integrated gravity composite structure caisson also includes: Top sealing plate 6 is fixedly installed on the top of vertical shaft section 1, and wind power system 5 is installed on top sealing plate 6; Deck 7, several decks 7 are provided, and several decks 7 are arranged at intervals from top to bottom. Several decks 7 are installed on the inner side wall of the frustum section 2 and the inner side wall of the cylindrical section 3; data center module 4 is installed on deck 7. The bulkhead 8 is provided in several units. The bottom of the bulkhead 8 is fixedly installed on the inner bottom wall of the cylindrical section 3, and the top is fixedly connected to the inner top wall of the frustum section 2. Several bulkheads 8 are arranged at intervals and are arranged perpendicular to the deck 7. Bottom sealing plate 9 is fixedly installed at the bottom of cylindrical section 3; The top sealing plate 6 provides a stable installation foundation for the wind power system 5 and seals the top of the shaft section 1. Several decks 7 serve as installation carriers for the data center module 4, allowing the data center module 4 to be deployed in a layered and orderly manner, improving the utilization rate of the internal space of the caisson. At the same time, the layered structure facilitates the improvement of heat dissipation uniformity.

[0024] Several bulkheads 8 are arranged vertically with the deck 7, dividing the caisson's interior into multiple independent and stable compartments. This enhances the overall structural rigidity of the caisson and further disperses the loads brought by waves and water flow. It also prevents the spread of equipment failures in a single area and improves operational safety. The bottom sealing plate 9 is fixed to the bottom of the cylindrical section 3, sealing the bottom of the cylindrical section 3 to prevent seabed mud and seawater from entering the caisson and corroding the equipment. At the same time, it provides an installation support surface for the counterweight structure, ensuring the stability of the counterweight structure installation.

[0025] The scheme is further optimized. The data center module 4 includes several cabinets installed on the deck 7, and the cabinets are arranged in a matrix. The cabinets are connected to the terrestrial backbone network through the data transmission system, and the wind power system 5 is electrically connected to the cabinets. The heat dissipation system includes a main heat exchanger tube and several U-shaped heat exchanger tubes. U-shaped heat exchanger tubes are installed on the surface of the cabinet. The main heat exchanger tube is installed on the inner wall of the cylindrical section 3. Several U-shaped heat exchanger tubes are connected to the main heat exchanger tube. A return water pipe is installed at one end of the main heat exchanger tube, and a seawater inlet is installed at the other end. The seawater inlet is located below the cylindrical section 3. A seawater outlet is provided at the end of the return water pipe away from the main heat exchanger tube. The seawater outlet is located above the cylindrical section 3. The matrix layout maximizes the use of the installation area of ​​deck 7, increases the number of devices deployed per unit space, and adapts to the needs of large-scale cloud computing data centers.

[0026] In this embodiment, the number of server racks is 2500; The server racks are connected to the terrestrial backbone network through a data transmission system, enabling centralized transmission and interaction of data from each rack. The wind power system 5 is electrically connected to several racks, providing a stable supply of green electricity to each rack. At the same time, the matrix arrangement ensures uniform spacing between the racks, facilitating the piping layout and heat dissipation of the cooling system, avoiding heat accumulation caused by densely packed racks in certain areas, ensuring stable operating temperatures for each rack, and improving overall data processing efficiency.

[0027] The cooling system achieves efficient heat dissipation for data center module 4 through "seawater circulation heat exchange." U-shaped heat exchange tubes installed on the rack surface directly adhere to the rack housing, quickly absorbing the heat generated during rack operation. Several U-shaped heat exchange tubes are connected to the main heat exchange tubes installed on the inner wall of cylindrical section 3, forming a unified heat exchange network. Since the seawater inlet is located below cylindrical section 3, utilizing the natural pressure and flow of seawater, low-temperature seawater automatically enters the main heat exchange tubes and is then distributed to each U-shaped heat exchange tube for heat exchange with the rack. The heat-absorbing seawater is collected and returned through the return pipe, exiting from the seawater outlet located above cylindrical section 3. The entire process relies on natural seawater circulation, requiring no additional power, achieving passive and efficient heat dissipation, significantly reducing energy consumption. Simultaneously, the U-shaped heat exchange tube design increases the heat exchange area, improves heat exchange efficiency, and ensures long-term stable operation of the rack.

[0028] Further optimization of the scheme, wind power system 5 includes: Offshore wind power access module, the offshore wind power access module is provided in several groups, and the several groups of offshore wind power access modules are installed on the top sealing plate 6; Tidal energy access module, the tidal energy access module is installed at the bottom of cylindrical section 3; The prefabricated substation is installed on the top sealing plate 6. The tidal energy access module and several sets of offshore wind power access modules are electrically connected to the prefabricated substation. The energy storage unit is installed in the inner cavity of section 1 of the vertical shaft. The prefabricated substation is electrically connected to the energy storage unit, and several cabinets are electrically connected to the energy storage unit through flame-retardant cables. Several sets of offshore wind power access modules are installed on the top sealing plate 6 to maximize the capture of wind energy and its conversion into electrical energy. Tidal energy access modules are installed at the bottom of the cylindrical section 3, utilizing the rising and falling power of the seabed tides to convert into electrical energy, achieving complementary power supply from wind and tidal energy, and improving the stability and sustainability of green electricity supply. A prefabricated substation is installed on the top sealing plate 6 to receive the electrical energy generated by the offshore wind power access modules and tidal energy access modules, and to process the electrical energy through transformation and rectification to meet the power requirements of data center equipment.

[0029] The energy storage unit is installed inside the shaft section 1 and is electrically connected to the prefabricated substation. It can store excess green electricity and release the stored energy to power several cabinets when there is insufficient green electricity supply, such as when there is no wind or the tide is flat. (The cabinets are connected to the energy storage unit through flame-retardant cables to ensure power supply safety.) This achieves efficient utilization of green electricity and continuous and stable power supply, reducing dependence on the traditional power grid.

[0030] The scheme has been further optimized. The data transmission system includes a core switch installed in the cavity of section 1 of the shaft. Several cabinets are connected to the core switch via optical fiber. The core switch is connected to the terrestrial backbone network via submarine optical cable. Fiber optic transmission offers advantages such as high transmission speed, strong anti-interference capability, and low signal loss, enabling high-speed centralized transmission of data from various server racks. The core switch connects to the terrestrial backbone network via submarine fiber optic cables. These cables withstand seawater corrosion and the complex interference of the marine environment, ensuring the stability and security of data transmission. The entire data transmission link forms an efficient transmission path of "server rack - fiber optic cable - core switch - submarine fiber optic cable - terrestrial backbone network," enabling real-time data interaction and remote control between the data center and terrestrial terminals. Simultaneously, the silo section 1 provides protection for the core switch and transmission lines, further enhancing the reliability of data transmission.

[0031] The scheme is further optimized. The counterweight structure includes several sets of ballast tanks 10. The several sets of ballast tanks 10 are installed at intervals at the bottom of the inner cavity of the cylindrical section 3. The ballast tanks 10 are filled with iron sand. The packing density of iron sand ore is 3.2 t / m³. 3 The filling height is 5m, the ballast weight of a single compartment is 1256t, and the total ballast weight is 10048t. For clay foundations that have undergone foundation treatment (crushed stone cushion layer), the cumulative settlement of the underwater caisson within six months should be controlled within 30~50mm. At the same time, the uneven settlement difference must be strictly controlled: the ratio of settlement difference to structural span should be ≤0.002~0.003 (for example, for adjacent sections with a span of 10m, the settlement difference should be ≤20~30mm).

[0032] Iron ore has a high density, providing ample gravity. Multiple sets of spaced ballast tanks 10 achieve a uniform distribution of gravity, stabilizing the caisson's overall center of gravity. The combined gravity of the ballast tanks 10 and the caisson itself further enhances the caisson's resistance to overturning and its stability on the seabed, resisting the impact of waves, currents, and tides, preventing displacement or overturning, and ensuring long-term stable underwater operation of the caisson and its internal equipment. Furthermore, the modular design of the ballast tanks 10 facilitates adjustments to the counterweight according to changes in the marine environment, improving structural adaptability.

[0033] Further optimization of the design resulted in the following: the outer diameter of cylindrical section 3 is 80m, the height of cylindrical section 3 is 20m, the height of frustum section 2 is 10m, the top diameter of frustum section 2 is 30m, the top surface of shaft section 1 is 10m above the water surface, and the outer diameter of shaft section 1 is 20m; the distance between the bottom surface of cylindrical section 3 and the seabed is 5m. These dimensional parameters match the equipment deployment requirements of large-scale data centers and can accommodate a sufficient number of server racks and supporting equipment. At the same time, the reasonable size ratio can reduce the impact of waves and water flow on the caisson and improve structural stability.

[0034] Vertical shaft section 1, conical section 2, and cylindrical section 3 are all constructed using C60 marine concrete, with a wall thickness of 2m. The concrete material possesses excellent resistance to seawater erosion and structural strength, and the 2m wall thickness can effectively withstand the pressure and impact of the marine environment, ensuring the structural safety of the caisson for long-term service.

[0035] Further optimization of the design resulted in a wall thickness of 0.8m for deck 7, ensuring the structural strength to support data center module 4. The distance between two adjacent decks 7 is 5m, providing ample space for equipment installation, maintenance operations, and airflow.

[0036] The bulkhead 8 has a wall thickness of 0.4m, which ensures structural separation and rigidity enhancement while reducing the space occupied inside the caisson. The distance between two adjacent bulkheads 8 is 15.2m, which can realize the reasonable division of the cabin space, meet the equipment deployment requirements, ensure the uniform distribution of load, and improve the stability of the overall structure and the space utilization rate.

[0037] The solution was further optimized so that the distance between two adjacent cabinets is 1.2m. This not only ensures the dense matrix deployment of the cabinets and improves space utilization, but also provides sufficient space for the arrangement of the U-shaped heat exchange pipes of the heat dissipation system, which facilitates heat dissipation and avoids heat accumulation between cabinets. At the same time, the reserved distance makes it easier for staff to carry out equipment inspection, maintenance and expansion operations, thus balancing space utilization and operation and maintenance convenience.

[0038] The scheme is further optimized by providing a helicopter landing pad on the top surface of the top sealing plate 6, a maintenance passage 11 inside the vertical shaft section 1, and an entrance connected to the maintenance passage 11 on the top sealing plate 6. The helicopter landing pad on the top of the top sealing plate 6 provides a convenient passage for the rapid transportation of personnel and materials, which is especially suitable for caisson data centers in offshore areas, improving the efficiency of emergency maintenance and daily operation and maintenance. The maintenance passage 11 in the shaft section 1 provides a passage for personnel to enter the various decks 7 and compartments inside the caisson. The entrance on the top sealing plate 6 is connected to the maintenance passage 11. Personnel can enter the maintenance passage 11 through the entrance and then reach the various equipment areas for inspection, maintenance and expansion operations, simplifying the maintenance process and improving operational efficiency.

[0039] The design was further optimized by using Q355 steel for the ring-shaped reinforcing ribs, with a cross-sectional size of 300mm×200mm and a spacing of 2m, to effectively disperse the horizontal load brought by waves.

[0040] Further optimizing the design, the underwater submerged box-type data center structure of this invention adopts a segmented prefabrication process, specifically including: Cylindrical Section 3: The section is cast in three sections using steel formwork at the coastal prefabrication yard, each section being 6.67m high. Each section requires 28 days of curing after casting. After curing, the concrete strength is tested to ensure it is ≥60MPa before proceeding with subsequent processes. The reinforcing ribs and bulkhead 8 are pre-embedded simultaneously during the prefabrication process and are firmly connected to the concrete by rebar installation. The rebar installation depth is 150mm and the spacing is 200mm to ensure connection strength.

[0041] Conical Section 2: It is prefabricated in two sections, each with a height of 5m; the support beams are prefabricated in the factory and then welded on site, with a weld height of 10mm. After welding, flaw detection is required to ensure a 100% pass rate and avoid welding defects from affecting the structural strength.

[0042] Shaft Section 1: Prefabricated in 4 sections, each 5m high; the maintenance platform and maintenance passage 11 are pre-embedded simultaneously with precise positioning; the helipad is paved with anti-slip steel plates (20mm thick) to ensure the safety of helicopter take-off and landing.

[0043] Maritime transport and splicing Precast components are transported to the target sea area by a semi-submersible vessel (requiring a water depth of 45m and a seabed geology of silty clay); they are then assembled section by section using a floating crane, with the joints sealed with epoxy mortar (50mm wide and 30mm thick) and rubber waterstops (200mm wide) installed to ensure waterproof sealing performance at the joints and prevent seawater infiltration.

[0044] Ballast and Sinking Iron sand was filled into the ballast tank in 10 stages, with each stage reaching a height of 1m. After filling, the tank was left to stand for 24 hours to observe the settlement of the caisson and ensure uniform settlement. A leveling pad was installed on the bottom surface of the caisson body until the leveling pad sank steadily to the seabed. The top vertical shaft section 1 above water was kept at a height of 10m. The levelness of the caisson was detected by sonar, with a deviation of ≤0.1% to ensure that the structure was in a horizontal and stable state.

[0045] Data center module installation Rack deployment The cabinets are hoisted to the annular area through the maintenance passage 11 of the vertical shaft section 1 and fixed with M20 expansion bolts along the annular reinforcing ribs, with the bolts driven to a depth of 100mm. After each row of cabinets is installed, the levelness is calibrated, and the deviation is required to be ≤0.5mm / m to ensure the installation accuracy of the equipment.

[0046] Heat exchange system docking The U-shaped heat exchange tubes of the cabinet are precisely connected to the main heat exchange tubes via quick-connect interfaces. After connection, a sealing test is performed to ensure there is no leakage. The unobstructed flow of seawater inlet and outlet is checked, and any possible debris is removed to ensure smooth seawater circulation.

[0047] Data transmission and power supply system installation Data transmission: Fiber optic cables are laid along the longitudinal bulkhead 8 to connect all cabinets to the core switch in shaft section 1. After connection, signal testing is conducted to ensure data transmission rate and stability. Submarine optical cables are led out from the bottom of shaft section 1 and buried at a depth of 2m as required by design to connect to the terrestrial backbone network.

[0048] Power supply system: Connect the cables of the wind power access module and tidal power access module to the substation according to the specifications, and complete the wiring of the energy storage cabinet and the distribution cabinet; lay the flame-retardant cable along the cable tray of the transverse channel and connect it to each cabinet. After the wiring is completed, conduct a power-on test to check the voltage stability and power supply continuity; after the diesel generator backup module is installed, conduct a start-stop test to ensure that it can be quickly put into use in an emergency.

[0049] System debugging and acceptance Structural stability testing: Monitor the displacement and stress of the caisson under actual marine environment (waves and currents) to ensure that the maximum horizontal displacement is ≤0.1m and the maximum stress on the sidewall is ≤1.5MPa.

[0050] Cooling system commissioning: Monitor the cooling effect of the racks during operation to ensure that the PUE value is ≤1.1 and the temperature of each rack is controlled within the allowable operating range of the equipment.

[0051] Energy system commissioning: Test the efficiency of direct green electricity supply and the charging and discharging performance of energy storage units to ensure that the green electricity utilization rate is ≥95% and the power supply interruption time is ≤0.01s.

[0052] Overall acceptance: After all systems have been debugged and qualified, a 72-hour continuous operation test will be conducted to comprehensively test the stability of data transmission, equipment operation, and energy supply. Only after all indicators meet the standards can the system be officially put into use.

[0053] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0054] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An underwater caisson-type data center structure, characterized by, include: An integrated gravity composite structure caisson includes a vertical shaft section (1), a frustum section (2), and a cylindrical section (3) that are fixedly connected from top to bottom. The top of the vertical shaft section (1) extends out of the water surface, and the bottom of the inner cavity of the cylindrical section (3) is provided with a counterweight structure. Both the frustum section (2) and the cylindrical section (3) are equipped with annular reinforcing ribs. Data center module (4), which is installed in the inner cavity of the frustum section (2) and the cylindrical section (3), and the data center module (4) is arranged in a matrix; A heat dissipation system is installed on the surface of the data center module (4) and is connected to seawater; A data transmission system is installed inside the shaft section (1), and the data center module (4) is connected to the terrestrial backbone network through the data transmission system. The wind power system (5) is installed on the top of the shaft section (1) and is electrically connected to the data center module (4).

2. The underwater caisson-style data center structure of claim 1, wherein: The integrated gravity-type composite structure caisson also includes: Top sealing plate (6), the top sealing plate (6) is fixedly installed on the top of the vertical shaft section (1), and the wind power system (5) is installed on the top sealing plate (6); Deck (7), the deck (7) is provided with several decks (7) arranged at intervals from top to bottom, the inner sidewall of the frustum section (2) and the inner sidewall of the cylindrical section (3) are both equipped with several decks (7); the data center module (4) is installed on the deck (7); The bulkhead (8) is provided in a plurality of such bulkheads. The bottom of the bulkhead (8) is fixedly installed on the inner bottom wall of the cylindrical section (3), and the top is fixedly connected to the inner top wall of the frustum section (2). The plurality of bulkheads (8) are arranged at intervals and are arranged perpendicular to the deck (7). Bottom sealing plate (9), which is fixedly installed at the bottom of the cylindrical section (3).

3. The underwater caisson-style data center structure of claim 2, wherein: The data center module (4) includes several cabinets installed on the deck (7), and the cabinets are arranged in a matrix; the cabinets are connected to the terrestrial backbone network through the data transmission system, and the wind power system (5) is electrically connected to the cabinets. The heat dissipation system includes a main heat exchange tube and several U-shaped heat exchange tubes. The U-shaped heat exchange tubes are installed on the surface of the cabinet. The main heat exchange tube is installed on the inner wall of the cylindrical section (3). Several U-shaped heat exchange tubes are connected to the main heat exchange tube. A return water pipe is installed at one end of the main heat exchange tube, and a seawater inlet is installed at the other end. The seawater inlet is located below the cylindrical section (3). A seawater outlet is provided at the end of the return water pipe away from the main heat exchange tube. The seawater outlet is located above the cylindrical section (3).

4. The underwater caisson-style data center structure of claim 3, wherein: The wind power system (5) includes: Offshore wind power access module, wherein the offshore wind power access module is provided in several groups, and the several groups of offshore wind power access modules are installed on the top sealing plate (6); A tidal energy access module is installed at the bottom of the cylindrical section (3); The prefabricated substation is installed on the top sealing plate (6), and the tidal energy access module and several sets of offshore wind power access modules are electrically connected to the prefabricated substation. An energy storage unit is installed in the inner cavity of the vertical shaft section (1). The prefabricated substation is electrically connected to the energy storage unit, and several cabinets are electrically connected to the energy storage unit through flame-retardant cables.

5. The underwater caisson-style data center structure of claim 3, wherein: The data transmission system includes a core switch installed in the cavity of the vertical shaft section (1), and several cabinets are connected to the core switch via optical fiber. The core switch is connected to the terrestrial backbone network via submarine optical cable.

6. The underwater caisson-style data center structure of claim 1, wherein: The counterweight structure includes several sets of ballast chambers (10), which are spaced apart and installed at the bottom of the inner cavity of the cylindrical section (3). The ballast chambers (10) are filled with iron sand ore.

7. The underwater submerged box-type data center structure according to claim 1, characterized in that: The outer diameter of the cylindrical section (3) is 80m, the height of the cylindrical section (3) is 20m, the height of the frustum section (2) is 10m, the top diameter of the frustum section (2) is 30m, the top surface of the shaft section (1) is 10m above the water surface, and the outer diameter of the shaft section (1) is 20m; the bottom surface of the cylindrical section (3) is 5m from the seabed; The vertical shaft section (1), the conical section (2), and the cylindrical section (3) are all made of concrete, and the wall thickness of the vertical shaft section (1), the conical section (2), and the cylindrical section (3) is 2m.

8. The underwater submerged box-type data center structure according to claim 2, characterized in that: The wall thickness of the deck (7) is 0.8m, the distance between two adjacent decks (7) is 5m, the wall thickness of the bulkhead (8) is 0.4m, and the distance between two adjacent bulkheads (8) is 15.2m.

9. The underwater submerged box-type data center structure according to claim 3, characterized in that: The distance between two adjacent cabinets is 1.2m.

10. The underwater submerged box-type data center structure according to claim 2, characterized in that: The top surface of the top sealing plate (6) is provided with a helicopter landing pad, and the vertical shaft section (1) is provided with a maintenance passage (11). The top sealing plate (6) is provided with an entrance that communicates with the maintenance passage (11).

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