Novel floating type converter station platform suitable for deep and far sea

Abstract

The invention discloses a novel floating type converter station platform suitable for deep and far sea, and belongs to the technical field of offshore platforms, the novel floating type converter station platform comprises a floating platform, a buoyancy cabin, a stand column, a water ballast tank and a mooring rope, the floating platform is used for supporting a converter station and related operation equipment, and the floating platform is located on the sea surface; the buoyancy cabins are correspondingly arranged on the bottom surface of the floating platform and provide buoyancy support for the floating platform; the four stand columns are correspondingly connected to the four corners of the floating platform, and the sectional area of the water ballast space is at least two times that of the stand columns. The four water ballast tanks are correspondingly arranged at the bottoms of the stand columns, and the gravity center and buoyancy of the converter station platform are adjusted by controlling injection or drainage of ballast water of the water ballast tanks. The mooring cables comprise a plurality of mooring cables which are correspondingly arranged at the four corners of the floating platform respectively, and the floating platform is fixed to the seabed through multi-point anchoring. The floating type converter station platform can flexibly adapt to the deep and far sea environment, the construction cost and the collapse risk are reduced, and the bearing capacity, the structural strength and the stability of the floating type converter station platform can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore platforms, and in particular to a novel floating converter station platform suitable for deep sea. Background Art

[0002] At present, the technology of floating wind power platform is becoming mature. The development of offshore wind power is moving from nearshore, shallow water, small-scale demonstration to offshore, deep water, and large-scale centralized development. The energy conversion of offshore wind power requires conversion at sea, converting electricity into high-voltage direct current and transmitting it to land. As a supporting measure for offshore wind power, traditional converter stations also need to be advanced to deep sea. However, traditional converter stations require fixed substructures, which not only require fixed substructures, but also require dozens of meters or even hundreds of meters of underground support piles. Pile driving is also limited by seabed terrain factors, and the resulting construction cost increases significantly; in addition, with the increase of water depth, the risk of damage and collapse of the jacket will also increase. The floating converter station platform does not need to fix the pile legs, can adapt to deep sea conditions, and does not need to fix the jacket foundation on the seabed, thus greatly reducing the construction cost and collapse risk of deep sea converter stations. However, the existing floating platform structure still has technical deficiencies in dealing with deep sea high pressure environment, buoyancy balance and mooring stability. It is urgent to develop a new floating converter station platform that can adapt to deep sea environment. Summary of the invention

[0003] Technical problems solved: In view of the technical problems existing in the floating converter station platform in the prior art, the present invention provides a new floating converter station platform and measurement method suitable for deep sea, which improves the bearing capacity, structural strength and stability of the converter station platform.

[0004] Technical solution: The present invention discloses a novel floating converter station platform suitable for deep sea, the converter station platform comprising: A floating platform, which is used to support the converter station and related operating equipment, and is located on the sea surface; the floating platform is made of high-strength corrosion-resistant material; A buoyancy chamber, the buoyancy chamber comprising a plurality of groups correspondingly arranged on the bottom surface of the floating platform, providing buoyancy support for the floating platform; Columns, the columns include four columns connected to the four corners of the floating platform, and the cross-sectional area of ​​the ballast water tank is at least twice the cross-sectional area of ​​the columns; the columns are made of high-strength corrosion-resistant materials; Ballast water tanks, including four ballast water tanks correspondingly arranged at the bottom of the columns; controlling the injection or discharge of ballast water in the ballast water tanks to adjust the center of gravity and buoyancy of the converter station platform; The mooring cables include a plurality of cables respectively arranged at the four corners of the floating platform, and the mooring cables fix the floating platform on the seabed through multi-point anchoring; the mooring cables are made of high-strength fiber composite materials.

[0005] Preferably, a reinforcing grid is provided inside the floating platform, and the reinforcing grid is composed of a plurality of grid transverse plates and grid longitudinal plates vertically crossed and combined, and the reinforcing grid divides the interior of the floating platform into a plurality of sealed cabins.

[0006] Preferably, the top surface of the floating platform is provided with an anti-slip layer.

[0007] Preferably, a plurality of limiting plate frames are evenly distributed on the bottom surface of the floating platform, and an arc-shaped slot and a buoyancy chamber fixedly connected in the arc-shaped slot are arranged at the bottom of each limiting plate frame.

[0008] Preferably, the buoyancy tank is composed of a plurality of independent compartments arranged in sections, and each compartment is an airtight structure separated by a plurality of partition plates.

[0009] Preferably, the buoyancy chamber is formed by connecting a plurality of buoys, and each buoy is provided with a plurality of partition plates along the circumferential direction of its axis to divide the buoy into a plurality of independent sealed compartments, and each sealed compartment has an independent buoyancy regulating function.

[0010] Preferably, the mooring cable is provided with a redundant length at the anchor point that can be tightened or extended, so as to ensure that the length of the mooring cable can be adjusted as required when the water depth changes.

[0011] Preferably, the floating platform and the columns and adjacent columns form a triangular support structure through diagonal braces and horizontal braces; the horizontal braces and diagonal braces are made of high-strength composite materials.

[0012] Preferably, the columns are connected to the floating platform and the ballast water tank by welding or bolts, and an anti-corrosion coating is provided at the connection.

[0013] Preferably, the column is a hollow profile, and each inner side wall of the column is provided with a T-shaped reinforcement strip along its length direction.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention removes the fixed platform of the traditional converter station and adopts a floating converter station platform that can flexibly adapt to the deep sea environment, reducing construction costs and collapse risks; 2. The floating converter station platform can achieve good buoyancy balance in deep sea environment and has strong wind and wave resistance through reasonable buoyancy design and structural optimization; 3. The floating converter station platform is made of high-strength corrosion-resistant materials, which increases the service life of the platform and can adapt to the deep sea high pressure environment; 4. The mooring system uses high-strength fiber materials to enhance the positioning stability of the converter station platform, effectively withstand the platform tension and wave impact, and ensure that it is not easily displaced when floating in the deep sea.

[0015] The present invention also has other beneficial effects which are described in the embodiments of the specification and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a converter station platform according to an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the internal structure of the bottom end of the middle floating body; Figure 3 for Figure 1 Schematic diagram of the internal structure of the center column; Figure 4 for Figure 1 Schematic diagram of the internal structure of the buoyancy tank.

[0017] Figure numerals: 100, converter station platform; 1, floating platform; 11, grid horizontal plate; 12, grid longitudinal plate; 13, limit plate frame; 14, arc-shaped slot; 15, reinforced grid; 2, buoyancy compartment; 21, partition compartment; 22, partition plate; 3, column; 31, T-shaped reinforcement strip; 4, ballast water tank; 5, horizontal support; 6, diagonal support; 7, mooring rope. DETAILED DESCRIPTION

[0018] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will be combined with the attached Figures 1 to 4 The technical solutions of the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0019] like Figure 1 As shown, the present invention is a novel floating converter station platform suitable for deep sea. The converter station platform 100 includes a floating platform 1, a buoyancy tank 2, a column 3, a ballast water tank 4 and a mooring cable 7.

[0020] like Figure 2As shown, the floating platform 1 is used to support the converter station and related operating equipment, and the floating platform 1 floats on the sea. A reinforced grid 15 is arranged inside the floating platform 1. The reinforced grid 15 is composed of a plurality of grid transverse plates 11 and grid longitudinal plates 12 that are vertically crossed and combined, and the reinforced grid 15 divides the inside of the floating platform 1 into a plurality of sealed compartments to increase the compressive strength of the floating platform 1. The floating platform 1 itself has strong buoyancy and bearing area, and its top surface is provided with an anti-slip layer for installing and fixing a variety of equipment to ensure the safe operation of the equipment. The floating platform 1 and the reinforced grid 15 inside it are made of high-strength corrosion-resistant materials and can withstand wind and waves and long-term corrosion in the marine environment. The floating platform 1 adopts a rectangular structure, which has good stability and water flow adaptability in the marine environment.

[0021] like Figure 1 As shown, the buoyancy chamber 2 includes multiple groups correspondingly arranged on the bottom surface of the floating platform 1. The buoyancy chamber 2 is composed of a plurality of independent compartments 21 arranged in sections, and each compartment 21 is an airtight structure separated by a plurality of partition plates 22, which provides buoyancy support for the floating platform 1, thereby meeting the carrying capacity requirements of the converter station platform 100.

[0022] In a specific embodiment, if Figure 4 As shown, the buoyancy chamber 2 is formed by connecting a plurality of buoys, and each buoy is provided with a plurality of partition plates 22 along the circumferential direction of its axis to divide the buoy into a plurality of independent sealed compartments, and each sealed compartment has an independent buoyancy adjustment function, which can maintain the normal buoyancy of other sealed compartments when individual sealed compartments are damaged. A plurality of limiting plate frames 13 are evenly distributed on the bottom surface of the floating platform 1, and an arc-shaped card slot 14 is provided at the bottom of each limiting plate frame 13. The buoyancy chamber 2 can be fixedly connected in the arc-shaped card slot 14 by welding or bolt connection. More specifically, eight limiting plate frames 13 are evenly distributed on the bottom surface of the floating platform 1, and the corresponding buoyancy chamber 2 also includes eight. The structure of the buoyancy chamber 2 increases the bearing capacity of the floating platform 1 while increasing the vertical motion damping. When the waves impact the converter station platform 100, the buoyancy chamber 2 can effectively absorb and buffer the vertical motion energy, reducing the shaking and displacement of the converter station platform 100.

[0023] like Figure 1 and Figure 3 As shown, the columns 3 include four columns correspondingly connected to the four corners of the floating platform 1. The columns 3 are hollow profiles, and each inner wall of the columns 3 is provided with a T-shaped reinforcement strip 31 along its length direction. The columns 3 are made of high-strength corrosion-resistant materials, which can withstand the strong impact force in the ocean and ensure the connection stability and structural strength between the floating platform 1 and the buoyancy tank 2. The connection between the columns 3 and the floating platform 1 and the ballast tank 4 is fixed by welding or bolts, and an anti-corrosion coating is provided at the connection to improve its corrosion resistance.

[0024] like Figure 1As shown, the ballast water tank 4 includes four correspondingly arranged at the bottom of the column 3, and each ballast water tank 4 is provided with an independent control mechanism. The center of gravity and buoyancy of the converter station platform 100 are adjusted by controlling the injection or discharge of ballast water in the ballast water tank 4. The buoyancy tank 2 is used in conjunction with the ballast water tank 4. Under extreme sea conditions, the swaying amplitude of the converter station platform 100 can be reduced by adjusting the buoyancy and center of gravity, thereby ensuring the stability and safety of the converter station platform 100. More preferably, the column 3 is smoothly connected to the ballast water tank 4, and the cross-sectional area of ​​the ballast water tank 4 is at least twice the cross-sectional area of ​​the column 3, ensuring that the ballast water tank 4 has sufficient ballast capacity, and controlling the water intake of the ballast water tank 4 can reduce the center of gravity of the converter station platform 100 to the greatest extent, thereby achieving the purpose of improving the stability and seakeeping performance of the converter station platform 100.

[0025] like Figure 1 As shown, the mooring cable 7 is made of high-strength fiber composite material. The mooring cable 7 includes a plurality of cables respectively arranged at the four corners of the floating platform 1. The mooring cable 7 is provided with a length that can be tightened or extended at the anchor point to ensure that the length of the mooring cable 7 can be adjusted according to the demand when the water depth changes. The mooring cable 7 will not be too tight or loose, and the converter station platform 100 will not be submerged due to the length of the mooring cable 7, further improving the stability and safety of the converter station platform 100. The mooring cable 7 made of the fiber material has the advantages of high strength, light weight, corrosion resistance, etc., and can effectively withstand the tension of the converter station platform 100 and the impact of waves. In the marine environment, the mooring cable 7 can effectively limit the movement of the converter station platform 100, ensuring that the converter station platform 100 always remains in a predetermined position. Even under severe conditions such as strong winds and huge waves, the converter station platform 100 can remain stable, providing reliable guarantee for the normal operation of the converter station.

[0026] like Figure 1 As shown, the floating platform 1 and the columns 3 and the adjacent columns 3 are connected by diagonal braces 6 and horizontal braces 5 to form a triangular support structure. The horizontal braces 5 and diagonal braces 6 are made of high-strength composite materials. The triangular support structure can withstand multi-directional external forces, thereby improving the connection strength between the columns 3 and the floating platform 1, avoiding deformation or damage of the converter station platform 100 under the action of wind and waves, and ensuring that the overall structure of the platform is firm and reliable. Specifically, the triangular support structure includes four groups of four horizontal braces 5 and eight diagonal braces 6 corresponding to each side of the converter station platform 100.

[0027] The converter station platform 100 of the present invention has the advantages of adjustable buoyancy, stable structure, strong wind and wave resistance, and adaptability to complex deep sea environments. It is suitable for converter station operating environments for offshore wind power generation, deep-sea oil and gas development, and other marine energy development, and has good adaptability and scalability.

[0028] It should be noted that various types of high-strength corrosion-resistant materials, high-strength fiber composite materials, corrosion-resistant coatings and other materials used in the present invention can be selected from various types of materials in the prior art to achieve their functions.

[0029] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A new floating converter station platform suitable for deep sea, characterized in that: The converter station platform (100) includes: A floating platform (1), the floating platform (1) is used to support a converter station and related operating equipment, and the floating platform (1) is located on the sea surface; the floating platform (1) is made of high-strength corrosion-resistant material; A buoyancy chamber (2), the buoyancy chamber (2) comprising a plurality of groups arranged correspondingly on the bottom surface of the floating platform (1), providing buoyancy support for the floating platform (1); A column (3), the column (3) comprising four columns correspondingly connected to the four corners of the floating platform (1), the column (3) being made of a high-strength corrosion-resistant material; Ballast water tanks (4), the ballast water tanks (4) comprising four ballast water tanks (4) correspondingly arranged at the bottom of the columns (3), and the cross-sectional area of ​​the ballast water tanks (4) is at least twice the cross-sectional area of ​​the columns (3); the injection or discharge of ballast water in the ballast water tanks (4) is controlled to adjust the center of gravity and buoyancy of the converter station platform (100); A mooring cable (7), the mooring cable (7) comprising a plurality of cables respectively arranged at the four corners of the floating platform (1), the mooring cables (7) fixing the floating platform (1) on the seabed through multi-point anchoring; the mooring cables (7) are made of high-strength fiber composite material.

2. The novel floating converter station platform suitable for deep sea according to claim 1 is characterized in that: A reinforcing grid (15) is arranged inside the floating platform (1), and the reinforcing grid (15) is composed of a plurality of grid transverse plates (11) and grid longitudinal plates (12) that are vertically crossed and combined, and the reinforcing grid (15) divides the interior of the floating platform (1) into a plurality of sealed cabins.

3. The novel floating converter station platform suitable for deep sea according to claim 2 is characterized in that: The top surface of the floating platform (1) is provided with an anti-slip layer.

4. The novel floating converter station platform suitable for deep sea according to claim 1 is characterized in that: A plurality of limiting plate frames (13) are evenly distributed on the bottom surface of the floating platform (1), and each limiting plate frame (13) is provided with an arc-shaped slot (14) and a buoyancy chamber (2) fixedly connected in the arc-shaped slot (14) at the bottom.

5. The novel floating converter station platform suitable for deep sea according to claim 4 is characterized in that: The buoyancy chamber (2) is composed of a plurality of independent compartments (21) arranged in sections, and each compartment (21) is an airtight structure divided by a plurality of partition plates (22).

6. The novel floating converter station platform suitable for deep sea according to claim 5 is characterized in that: The buoyancy chamber (2) is formed by connecting a plurality of buoys, and each buoy is provided with a plurality of partition plates (22) along the circumference of its axis to divide the buoy into a plurality of independent sealed compartments, and each sealed compartment has an independent buoyancy adjustment function.

7. The novel floating converter station platform suitable for deep sea according to any one of claims 1 to 6, characterized in that: The mooring rope (7) is provided with a redundant length at the anchor point that can be tightened or extended, thereby ensuring that the length of the mooring rope (7) can be adjusted according to demand when the water depth changes.

8. The novel floating converter station platform suitable for deep sea according to claim 7 is characterized in that: The floating platform (1) and the columns (3) and adjacent columns (3) form a triangular support structure through diagonal braces (6) and horizontal braces (5); the horizontal braces (5) and the diagonal braces (6) are made of high-strength composite materials.

9. The novel floating converter station platform suitable for deep sea according to claim 7 is characterized in that: The connection between the column (3), the floating platform (1) and the ballast water tank (4) is fixed by welding or bolts, and an anti-corrosion coating is provided at the connection.

10. The novel floating converter station platform suitable for deep sea according to claim 7 is characterized in that: The column (3) is a hollow profile, and each inner side wall of the column (3) is provided with a T-shaped reinforcement strip (31) along its length direction.

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