Floating foundation with adjustable center of gravity in three directions and hybrid wind-solar integrated system

Abstract

The invention provides a three-direction gravity center adjustable floating foundation and a mixed type wind-solar integrated system, and belongs to the technical field of ocean engineering, the three-direction gravity center adjustable floating foundation comprises a gravity block, and the gravity block is connected with a buoyancy cabin through a connecting rod piece; a plurality of through holes are formed in the first adjusting plate and the second adjusting plate, the connecting rod pieces penetrate through the through holes and are arranged in the different through holes to adjust the horizontal gravity center, and the vertical gravity center is adjusted by adjusting the positions of the first adjusting plate and the second adjusting plate; the buoyancy cabin is connected with the semi-submersible side columns through three uniformly distributed variable cross-section cross beams, the adjacent semi-submersible side columns are connected through connecting cross rods, and the connecting cross rods are used for installing photovoltaic panels; a center stand column is installed in the center of the buoyancy compartment and used for supporting or fixing a draught fan. The overall stability of the platform is improved, the gravity center of the floating foundation can be adjusted according to actual environment requirements, the floating foundation has more excellent hydrodynamic performance in different water depth environments, and the energy collaborative utilization rate is higher.

Description

Technical Field

[0001] This invention belongs to the field of marine engineering technology, specifically relating to a three-dimensional adjustable center of gravity floating foundation and a hybrid wind-solar integrated system. Background Technology

[0002] Deep-sea offshore wind and solar energy are among the key clean and renewable resource directions for development and utilization. However, as water depths exceed a certain level, the cost disadvantages of stationary wind turbines and photovoltaic panels become apparent. Therefore, current research is also delving deeper into the field of floating wind-solar integrated systems. Floating wind turbines and photovoltaics are more environmentally friendly. Thus, floating wind turbines and photovoltaics, with their advantages of deep-water applicability, economic efficiency, and environmental friendliness, are of great significance for the development of deep-sea offshore wind and solar energy.

[0003] Floating foundation platforms come in various types, including monopole, semi-submersible, and tension leg (TLP) types, each suited to different marine environments and resource conditions. These traditional floating foundation designs each have their advantages and disadvantages. For example, monopole platforms exhibit superior performance in deep water, but are complex to install and costly, with limited adaptability to water depths. The large heave plate mass and small waterline area of ​​monopole platforms may cause fatigue damage to components. Unlike mobile devices, monopole platforms are permanent once installed, lacking flexibility and adaptability. While semi-submersible and tension leg platforms offer greater adaptability, they have certain shortcomings in dynamic stability. Semi-submersible platforms experience significant heave amplitude when facing wave excitation, and tension leg platforms are sensitive to high-frequency wave second-order forces, with the tension tendons bearing substantial loads, making them prone to fatigue damage. Furthermore, traditional floating foundations are costly, complex to install, and exhibit poor stability in extreme sea conditions. Summary of the Invention

[0004] The purpose of this invention is to provide a floating foundation with a three-dimensional adjustable center of gravity and a hybrid wind-solar integrated system, which increases the overall stability of the platform, enables the floating foundation to adjust its center of gravity according to actual environmental needs, has better hydrodynamic performance in different water depth environments, and adds photovoltaic panels to the floating foundation to achieve higher energy synergy utilization.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A three-dimensional adjustable center of gravity floating foundation includes: a gravity block, which is connected to a buoyancy chamber via a connecting rod, and an adjustment plate one and an adjustment plate two are installed on the connecting rod;

[0007] Both the first adjustment plate and the second adjustment plate have several through holes. The connecting rod passes through the through holes. The connecting rod is placed in different through holes to adjust the horizontal center of gravity. The vertical center of gravity is adjusted by adjusting the vertical position of the first adjustment plate and the second adjustment plate.

[0008] The buoyancy chamber is connected to the semi-submersible side columns by three evenly distributed variable cross-section beams. Adjacent semi-submersible side columns are connected by connecting crossbars, which are used to install photovoltaic panels.

[0009] A central column is installed at the center of the buoyancy chamber, which is used to support or fix the fan.

[0010] Furthermore, the buoyancy chamber includes a buoyancy chamber shell and buoyancy chamber partitions. The buoyancy chamber shell is a hollow cylinder. The central column is located on the central axis of the buoyancy chamber shell. The buoyancy chamber partitions are evenly arranged radially between the buoyancy chamber shell and the central column. The buoyancy chamber partitions divide the space inside the buoyancy chamber shell into multiple compartments.

[0011] Furthermore, the gravity block includes a gravity block fixing plate, a sub-block connecting rod, and several gravity sub-blocks. The gravity block fixing plate and the gravity sub-blocks, as well as two adjacent gravity block fixing plates, are connected by the sub-block connecting rods.

[0012] Furthermore, the central column is connected by N sub-steel columns one and two alternately by bolts. Sub-steel column one has a connector one, and sub-steel column two has a connector two. Connector one and connector two are connected by bolts.

[0013] Furthermore, the bottommost sub-steel column one or sub-steel column two of the central column is connected to the variable cross-section beam.

[0014] Furthermore, the upper and lower ends of the connecting rod have coarse thread sections, which are used to connect the buoyancy chamber and the gravity block, respectively;

[0015] Except for the coarse thread section, all the connecting rods are fine thread sections, used to install the first adjusting plate and the second adjusting plate.

[0016] Furthermore, the upper and lower ends of the first and second adjustment plates are respectively fixed to the connecting rods by flange nuts.

[0017] Furthermore, the connecting rods are connected to the buoyancy chamber and the gravity block respectively by fixing nuts.

[0018] Furthermore, the semi-submersible side column includes a central steel column and a covering layer sleeved on the outside of the central steel column, and the central steel column and the covering layer are bonded together with waterproof adhesive.

[0019] The present invention also includes:

[0020] A hybrid wind-solar integrated system includes the aforementioned three-dimensional adjustable floating foundation, wherein a wind turbine is installed on the central column of the three-dimensional adjustable floating foundation, and photovoltaic panels are installed on the connecting crossbars.

[0021] The beneficial effects of this invention are as follows:

[0022] This invention uses a three-dimensional adjustable center of gravity structure. The horizontal center of gravity is adjusted by adjusting the position of the threaded connecting rods connected to the buoyancy chamber and the fixed nuts of the bottom gravity block. The vertical center of gravity is adjusted by adjusting the upper and lower flange nuts of the plate. This can enhance dynamic stability, and the active center of gravity control can balance the stress distribution of each node, reduce stress concentration at welded joints, extend the fatigue life of the structure, and improve material utilization and shorten the installation cycle through modular construction.

[0023] The photovoltaic panels of this invention, mounted on semi-submersible columns, achieve a dual improvement in space utilization and power generation efficiency. The side-column photovoltaic system can provide power to platform equipment (such as ballast pumps and mooring monitoring), while saving space and not occupying land resources. Furthermore, it enables the utilization of more diverse energy sources for the entire floating foundation.

[0024] This invention increases the overall stability of the platform, enables the floating foundation to adjust its center of gravity according to actual environmental needs, and provides superior hydrodynamic performance in different water depths. Furthermore, adding photovoltaic panels to the floating foundation can result in higher energy synergy utilization.

[0025] This invention addresses the issues of relatively low energy conversion rates and the need for stable center of gravity, resistance to environmental loads, and improved hydrodynamic performance in traditional floating foundations, particularly in the use of single resources. By placing photovoltaic panels on semi-submersible side columns and connecting rods, and employing two adjusting plates and several nuts for three-dimensional center of gravity adjustment, this invention effectively solves the stability problems of traditional floating wind turbine foundations in deep water environments and improves energy utilization, achieving higher structural stability and economic benefits. Attached Figure Description

[0026] Appendix Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Appendix Figure 2 This is a schematic diagram of the connection between the buoyancy chamber and the gravity block of the present invention;

[0028] Appendix Figure 3 This is a structural schematic diagram of the connecting rod of the present invention;

[0029] Appendix Figure 4 This is a schematic diagram of the structure of the adjustment plate of the present invention;

[0030] Appendix Figure 5 This is a schematic diagram of the connection between the semi-submersible side post and the connecting crossbar of the present invention;

[0031] Appendix Figure 6 This is a schematic diagram of the buoyancy chamber of the present invention;

[0032] Appendix Figure 7 This is a schematic diagram of the gravity block structure of the present invention;

[0033] Appendix Figure 8 This is a structural schematic diagram of the steel column of the present invention;

[0034] Appendix Figure 9 This is a schematic diagram of the structure of the second steel column of the present invention.

[0035] In the attached diagram: 1. Semi-submersible side column, 2. Central column, 2-1. Sub-steel column one, 2-2. Sub-steel column two, 3. Buoyancy chamber, 4. Connecting rod, 5. Adjusting plate one, 5-1. Through hole, 6. Adjusting plate two, 7. Gravity block, 7-1. Gravity block fixing plate, 7-2. Sub-block connecting rod, 7-3. Gravity sub-block, 8. Variable cross-section beam, 9. Connecting crossbar, 10. Photovoltaic panel. Detailed Implementation

[0036] The present invention will now be further described with reference to the accompanying drawings.

[0037] This invention provides a floating foundation with an adjustable center of gravity in three dimensions, as shown in the attached figure. Figure 1 As shown, it includes: a gravity block 7, which is connected to the buoyancy chamber 3 by a connecting rod 4, and an adjusting plate 5 and an adjusting plate 6 are installed on the connecting rod 4;

[0038] Both the first adjustment plate 5 and the second adjustment plate 6 have several through holes 5-1. The connecting rod 4 passes through the through holes 5-1. The connecting rod 4 is placed in different through holes 5-1 to adjust the horizontal center of gravity. The vertical center of gravity is adjusted by adjusting the vertical position of the first adjustment plate 5 and the second adjustment plate 6.

[0039] The buoyancy chamber 3 is connected to the semi-submersible side column 1 by three evenly distributed variable cross-section beams 8. Adjacent semi-submersible side columns 1 are connected by connecting crossbars 9, which are used to install photovoltaic panels.

[0040] A central column 2 is installed at the center of the buoyancy chamber 3, which is used to support or fix the fan.

[0041] The gravity block 7 and the buoyancy chamber 3 are connected by connecting rods 4, with adjusting plate 5 and adjusting plate 6 sandwiched in between, together forming the main structure of the floating foundation. The buoyancy chamber 3 is above the connecting rods 4, adjusting plate 5 and adjusting plate 6, while the gravity block 7 is below the connecting rods 4, adjusting plate 5 and adjusting plate 6, maximizing the adjustment of the center of gravity.

[0042] Preferably, the central column 2 is a steel column, located above the center of the buoyancy chamber 3, and connected to the top of the buoyancy chamber 3 by welding, and connected to the wind turbine 13. The connecting crossbar 9 is also made of steel, and the semi-submersible side columns 1 are connected together in pairs by welding, and the photovoltaic panels 10 are also mounted on the connecting crossbar 9 by welding.

[0043] As attached Figure 2 As shown, the upper and lower ends of the first adjusting plate 5 and the second adjusting plate 6 are respectively fixed to the connecting rod 4 by flange nuts 12.

[0044] The connecting rod 4 is connected to the buoyancy chamber 3 and the gravity block 7 respectively by fixing nuts 11.

[0045] Holes are made on the lower surface of the buoyancy chamber 3 and the upper surface of the gravity block 7, and the connecting rod 4 is fixed with a fixing nut 11.

[0046] In this embodiment, the lower surface of the buoyancy chamber 3 is perforated, and the connecting rod 4 is threaded for connection. Finally, the buoyancy chamber 3 and the connecting rod 4 are fixedly connected using a fixing nut 11 to ensure structural stability. Similarly, the upper surface of the gravity block 7 is also perforated, and the connecting rod 4 is threaded for connection, and finally fixed using a fixing nut 11. Simultaneously, the middle portion of the connecting rod 4 is threaded to connect with the first adjusting plate 5 and the second adjusting plate 6. After selecting the desired fixing position, it is fixed using a flange nut 12.

[0047] The three-dimensional adjustable center of gravity of this invention is achieved by connecting the upper and lower ends of the connecting rod 4 to different through holes in the buoyancy chamber 3 and the gravity block 7, and by adjusting the positions of the through holes of the first adjusting plate 5 and the second adjusting plate 6, so as to adjust the lateral center of gravity; the vertical center of gravity can be adjusted by adjusting the upper and lower fixed positions of the first adjusting plate 5 and the second adjusting plate 6.

[0048] Preferably, in this example, both the buoyancy chamber 3 and the gravity block 7 have six holes, but the number and location of the holes can be selected according to the actual situation.

[0049] In this example, both adjustment plate 5 and adjustment plate 6 are designed to have eighteen holes, but the number and location of the holes can be adjusted according to the actual situation.

[0050] The number of fixing nuts 11 is determined by the number of openings in the buoyancy chamber 3 and the gravity block 7. In this example, six fixing nuts are used to match them.

[0051] The number of flange nuts 12 is determined by the number of openings in adjusting plate 5 and adjusting plate 6. The number of nuts is twice the number of openings in one adjusting plate, and they are distributed at the upper and lower ends of adjusting plate 5 and adjusting plate 6 respectively.

[0052] As attached Figure 3 As shown, the upper and lower ends of the connecting rod 4 have coarse thread sections 4-2, which are used to connect the buoyancy chamber 3 and the gravity block 7, respectively.

[0053] Except for the coarse thread section, the connecting rod 4 is composed of fine thread sections 4-1, which are used to install the first adjusting plate 5 and the second adjusting plate 6.

[0054] The number of connecting rods 4 is not fixed and can be adjusted according to the actual situation to select the actual number of rods.

[0055] As attached Figure 4 As shown, adjustment plate 5 and adjustment plate 6 are made of steel. There are 18 through holes 5-1 in this example. The outer layer is covered with high-strength, low-density composite material.

[0056] As attached Figure 5 As shown, the photovoltaic panels 10 are installed by connecting crossbars 9 between each pair of semi-submersible side posts 1. The crossbars 9 are made of rectangular reinforced steel, coated with an anti-corrosion coating, and connected to the semi-submersible side posts 1 by welding. The photovoltaic panels 10 use N-type high-efficiency cells and are encapsulated with double-sided glass. The surface of the photovoltaic panels 10 is coated with a nano-TiO2 photocatalytic coating, and copper alloy antibacterial tape is attached to the edges.

[0057] The number of photovoltaic panels 10 can be adjusted according to the actual environment and engineering needs.

[0058] As attached Figure 6 As shown, the buoyancy chamber 3 includes a buoyancy chamber shell 3-1 and a buoyancy chamber partition 3-2. The buoyancy chamber shell is a hollow cylinder. The central column 2 is located on the central axis of the buoyancy chamber shell. The buoyancy chamber partition 3-2 is radially and evenly arranged between the buoyancy chamber shell 3-1 and the central column 2. The buoyancy chamber partition 3-2 divides the space inside the buoyancy chamber shell 3-1 into multiple compartments.

[0059] In this embodiment, the buoyancy chamber 3 is cylindrical, made of steel, and its outer shell is wrapped with a low-density composite material. The interior of the buoyancy chamber 3 is divided into several compartments by partitions to improve safety, and the internal partitions and the central column are welded together.

[0060] As attached Figure 7As shown, the gravity block 7 includes a gravity block fixing plate 7-1, a sub-block connecting rod 7-2, and several gravity sub-blocks 7-3. The gravity block fixing plate 7-1 and the gravity sub-blocks 7-3, as well as two adjacent gravity block fixing plates 7-1, are connected by the sub-block connecting rod 7-2.

[0061] As attached Figure 8-9 As shown, the central column 2 is connected by N sub-steel columns 2-1 and 2-2 alternately by bolts. Sub-steel column 2-1 has a connector 2-1-1, and sub-steel column 2-2 has a connector 2-2-1. The connector 2-1-1 and the connector 2-2-1 are connected by bolts.

[0062] The bottommost sub-steel column 2-1 or sub-steel column 2-2 of the central column 2 is connected to the variable cross-section beam 8 by welding.

[0063] The semi-submersible side column 1 includes a central steel column and a covering layer sleeved on the outside of the central steel column, and the central steel column and the covering layer are bonded together with waterproof adhesive.

[0064] This example provides a three-dimensional adjustable center of gravity wind-solar integrated floating foundation. After the photovoltaic panels are installed, evaporation can be reduced to a certain extent. The photovoltaic panels also shade the water surface to reduce the evaporation rate, which has a certain degree of eco-friendliness.

[0065] This embodiment may also include:

[0066] A hybrid wind-solar integrated system includes the aforementioned three-dimensional adjustable floating foundation. A wind turbine 13 is installed on the central column 2 of the three-dimensional adjustable floating foundation, and a photovoltaic panel 10 is installed on the connecting crossbar 9.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A floating foundation with an adjustable center of gravity in three dimensions, characterized in that, include: Gravity block (7), the gravity block (7) is connected to the buoyancy chamber (3) by a connecting rod (4), and an adjusting plate one (5) and an adjusting plate two (6) are installed on the connecting rod (4); Both the first adjustment plate (5) and the second adjustment plate (6) have several through holes (5-1). The connecting rod (4) passes through the through holes (5-1). The connecting rod (4) is placed in different through holes (5-1) to adjust the horizontal center of gravity. The vertical center of gravity is adjusted by adjusting the vertical position of the first adjustment plate (5) and the second adjustment plate (6). The buoyancy chamber (3) is connected to the semi-submersible side column (1) by three evenly distributed variable cross-section beams (8). Adjacent semi-submersible side columns (1) are connected by connecting crossbars (9), which are used to install photovoltaic panels. A central column (2) is installed at the center of the buoyancy chamber (3), and the central column (2) is used to support or fix the fan.

2. The floating foundation with adjustable three-dimensional center of gravity according to claim 1, characterized in that, The buoyancy chamber (3) includes a buoyancy chamber shell (3-1) and a buoyancy chamber partition (3-2). The buoyancy chamber shell is a hollow cylinder. The central column (2) is located on the central axis of the buoyancy chamber shell. The buoyancy chamber partition (3-2) is radially and uniformly arranged between the buoyancy chamber shell (3-1) and the central column (2). The buoyancy chamber partition (3-2) divides the space inside the buoyancy chamber shell (3-1) into multiple compartments.

3. The floating foundation with adjustable three-dimensional center of gravity according to claim 1 or 2, characterized in that, The gravity block (7) includes a gravity block fixing plate (7-1), a sub-block connecting rod (7-2), and several gravity sub-blocks (7-3). The gravity block fixing plate (7-1) and the gravity sub-blocks (7-3), as well as two adjacent gravity block fixing plates (7-1), are connected by the sub-block connecting rod (7-2).

4. The floating foundation with adjustable three-dimensional center of gravity according to claim 3, characterized in that, The central column (2) is connected alternately by bolts to N sub-steel columns one (2-1) and two sub-steel columns two (2-2). The sub-steel column one (2-1) has a connector one (2-1-1), and the sub-steel column two (2-2) has a connector two (2-2-1). The connector one (2-1-1) and the connector two (2-2-1) are connected by bolts.

5. The floating foundation with adjustable three-dimensional center of gravity according to claim 4, characterized in that, The bottommost sub-steel column one (2-1) or sub-steel column two (2-2) of the central column (2) is connected to the variable cross-section beam (8).

6. The floating foundation with adjustable three-dimensional center of gravity according to claim 4 or 5, characterized in that, The connecting rod (4) has coarse threaded sections (4-2) at both ends, which are used to connect the buoyancy chamber (3) and the gravity block (7) respectively; The connecting rod (4) has fine thread sections (4-1) except for the coarse thread section, and is used to install the first adjusting plate (5) and the second adjusting plate (6).

7. The floating foundation with adjustable three-dimensional center of gravity according to claim 6, characterized in that, The upper and lower ends of the first adjusting plate (5) and the second adjusting plate (6) are respectively fixed to the connecting rod (4) by flange nuts (12).

8. The floating foundation with adjustable three-dimensional center of gravity according to claim 7, characterized in that, The connecting rod (4) is connected to the buoyancy chamber (3) and the gravity block (7) respectively by fixing nuts (11).

9. The floating foundation with adjustable three-dimensional center of gravity according to claim 6 or 7, characterized in that, The semi-submersible side column (1) includes a central steel column and a covering layer sleeved on the outside of the central steel column, and the central steel column and the covering layer are bonded together with waterproof adhesive.

10. A hybrid wind-solar integrated system, characterized in that, The floating foundation includes the three-dimensional adjustable center of gravity floating foundation as described in any one of claims 1-9, wherein a fan (13) is installed on the central column (2) of the three-dimensional adjustable center of gravity floating foundation, and a photovoltaic panel (10) is installed on the connecting crossbar (9).

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