Modularized floating type offshore wind power platform

Abstract

The utility model discloses a modularized floating type offshore wind power platform which comprises a prefabricated center body and a plurality of prefabricated buoyancy cabins, the prefabricated center body is of a steel structure, one ends of the prefabricated buoyancy cabins are connected with the prefabricated center body, the other ends of the prefabricated buoyancy cabins are arranged in a radial mode, and the prefabricated buoyancy cabins are of reinforced concrete structures. And a plurality of split prefabricated modules are connected in sequence. The floating type offshore wind power platform can effectively solve the problems that the concrete wall of the floating type offshore wind power platform is prone to cracking, seawater permeates to corrode the steel bars, fracture and damage of the steel bars are accelerated, and the platform loses efficacy.

Description

Technical Field

[0001] This utility model relates to the technical field of wind power generation, and in particular to a modular floating offshore wind power platform. Background Technology

[0002] Floating concrete offshore wind power platforms are cheaper and more readily available than steel floating platforms. However, floating concrete platforms are subject to complex stresses, and in the complex marine environment, the concrete is at risk of cracking. Once the concrete cracks, seawater seeps in and corrodes the reinforcing steel, which accelerates the steel's fracture and damage, thus causing the platform to fail.

[0003] In addition, floating concrete offshore wind power platforms are large in scale, with a span of nearly 100m. If they are to be poured in batches at the dock, they will occupy a large amount of scarce dock resources, and the construction will be lengthy and costly. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a modular floating offshore wind power platform that can effectively solve the problems of easy cracking of the concrete wall of the floating offshore wind power platform, and the accelerated fracture and failure of the steel reinforcement caused by seawater infiltration and corrosion.

[0005] The objective of this utility model can be achieved by adopting the following technical solutions:

[0006] A modular floating offshore wind power platform includes a prefabricated central body and multiple prefabricated floating pods. The prefabricated central body is a steel structure. One end of each of the multiple prefabricated floating pods is connected to the prefabricated central body, and the other end is arranged radially. Each prefabricated floating pod is a reinforced concrete structure and is composed of multiple separate prefabricated modules connected in sequence.

[0007] Furthermore, the prefabricated modular unit is an independent sealed compartment structure.

[0008] Furthermore, the prefabricated modular unit includes a concrete shell, an external steel waterproof membrane, and an internal steel waterproof membrane. The external and internal steel waterproof membranes are respectively installed on the outer and inner walls of the concrete shell to prevent seawater from seeping into the interior of the concrete shell. Concrete embedded reinforcing profiles are respectively provided on the side of the external and internal steel waterproof membranes facing the concrete shell, and the concrete embedded reinforcing profiles are pre-embedded inside the concrete shell.

[0009] Furthermore, a central partition for compartmentalization and structural reinforcement is provided at the center of the prefabricated modular unit.

[0010] Furthermore, the side of the central partition is provided with reinforcing profiles.

[0011] Furthermore, the prefabricated modules connected to the prefabricated center body have a transition section connection and embedding structure embedded inside. One end of the transition section connection and embedding structure is embedded inside the concrete shell of the prefabricated module and is located between the outer steel waterproof plate and the concrete embedding and reinforcing profile of the inner steel waterproof plate of the prefabricated module. The other end is welded to the prefabricated center body.

[0012] Furthermore, one end of the transition section connecting the embedded structure is provided with a shear key and an embedded flange.

[0013] Furthermore, multiple prefabricated modules are connected by welding or high-strength bolts.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0015] 1. This utility model overcomes the problem of conventional reinforced concrete precast floating hulls cracking and taking on water under load by designing an inner and outer steel waterproof plate structure, thus reducing the risk of the floating body capsizing after taking on water. At the same time, the design of the inner and outer steel waterproof plate structure, together with the reinforced concrete structure, forms a joint load transfer system, which is less expensive than an all-steel floating body.

[0016] 2. The platform of this utility model adopts a modular factory design and manufacturing, and is assembled at the dock. Compared with the overall casting of floating bodies, it occupies less dock resources and has higher construction efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a structural schematic diagram of a single prefabricated floating pod.

[0019] Figure 3 for Figure 2 Sectional view along the BB direction.

[0020] Figure 4 for Figure 2 Sectional view along the AA direction.

[0021] Figure 5 This is a schematic diagram showing the welding connection between the prefabricated modules.

[0022] Figure 6 This is a schematic diagram showing the connection between prefabricated modular units using high-strength bolts. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0024] like Figures 1 to 2 As shown, this embodiment provides a modular floating offshore wind power platform. The platform adopts a modular structure as a whole, including a prefabricated central body 1 and multiple prefabricated floating pods 2. The prefabricated central body 1 is a steel structure. In this embodiment, three prefabricated floating pods 2 are used as an example. One end of the three prefabricated floating pods 2 is connected to the prefabricated central body 1, and the other end is arranged radially, that is, evenly distributed at 120 degrees. The prefabricated floating pods 2 are reinforced concrete structures and are composed of multiple separate prefabricated modules 3 connected in sequence. The separate prefabricated modules and the prefabricated central body are prefabricated in the factory and then transported to the dock for assembly and connection.

[0025] like Figure 3 As shown, each prefabricated modular unit 3 is an independent sealed compartment structure.

[0026] The prefabricated modular unit 3 includes a concrete shell 301, an external steel waterproof membrane 302, and an internal steel waterproof membrane 303. The concrete is made of medium-strength material. The external and internal steel waterproof membranes 302 and 303 are respectively installed on the outer and inner walls of the concrete shell 301 to prevent seawater from seeping into the interior of the concrete shell 301 and corroding the reinforcing steel. They also serve to transfer the loads from the wind turbine and wave currents. Concrete-embedded reinforcing profiles 304 are respectively installed on the side of the external and internal steel waterproof membranes 302 and 303 facing the concrete shell 301, and are embedded inside the concrete shell 301. A central partition 305 for compartmentalization and structural reinforcement is located at the center of the prefabricated modular unit 3, and reinforcing profiles 306 are installed on the sides of the central partition 305.

[0027] like Figure 4As shown, a transition section connection and embedding structure 307 is pre-embedded inside the precast module 3 connected to the precast central body 1. One end of the transition section connection and embedding structure 307 is pre-embedded inside the concrete shell of the precast module and is located between the outer steel waterproof plate and the concrete embedding reinforcement profile of the inner steel waterproof plate of the precast module. The other end is welded to the precast central body. To strengthen the connection, a shear key 308 and an embedding flange 309 are provided at one end of the transition section connection and embedding structure. In this embodiment, the transition section connection and embedding structure needs to be pre-embedded in position before the module is poured, and then the concrete material is poured. After the concrete ages, the transition section connection and embedding structure is then welded to the central body connection structure.

[0028] like Figure 5 , Figure 6 As shown, multiple prefabricated modules 3 can be connected by welding 4 or high-strength bolts 5.

[0029] The overall construction method for the above platform is as follows:

[0030] Step 1: First, cut the steel plate and prepare the reinforcing profile;

[0031] Step 2: Weld the external and internal steel waterproof membranes of the prefabricated modular units, weld the concrete-embedded reinforcing profiles, and conduct a sealing test;

[0032] Step 3: Secure the transition connection and embedding structure to the corresponding precast modular unit and pour concrete; pour concrete into the outer steel waterproof liner and the inner steel waterproof liner of the precast modular unit; weld and manufacture the precast center body in the factory.

[0033] Step 4: All prefabricated components are transported to the dock;

[0034] Step 5: Connect the precast central body and the precast modules with embedded transition connection and fixing structures (welding or high-strength bolts can be used for connection);

[0035] Step 6: Connect the other prefabricated modules in sequence (welding or high-strength bolts can be used for connection);

[0036] Step 7: Dive the entire system into the water.

[0037] The above description is only a preferred embodiment of this utility model patent, but the protection scope of this utility model patent is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed in this utility model patent, based on the technical solution and utility model patent concept of this utility model patent, shall fall within the protection scope of this utility model patent.

Claims

1. A modular floating offshore wind power platform, characterized in that: It includes a prefabricated central body and multiple prefabricated floating pods. The prefabricated central body is a steel structure. One end of the multiple prefabricated floating pods is connected to the prefabricated central body, and the other end is arranged radially. The prefabricated floating pods are reinforced concrete structures and are composed of multiple separate prefabricated modules connected in sequence.

2. The modular floating offshore wind power platform according to claim 1, characterized in that: The prefabricated modular unit is an independent sealed compartment structure.

3. The modular floating offshore wind power platform according to claim 2, characterized in that: The prefabricated modular unit includes a concrete shell, an external steel waterproof membrane, and an internal steel waterproof membrane. The external and internal steel waterproof membranes are respectively installed on the outer and inner walls of the concrete shell to prevent seawater from seeping into the interior of the concrete shell. Concrete embedded reinforcing profiles are respectively installed on the side of the external and internal steel waterproof membranes facing the concrete shell, and the concrete embedded reinforcing profiles are pre-embedded inside the concrete shell.

4. The modular floating offshore wind power platform according to claim 3, characterized in that: The prefabricated modular unit has a central partition at its center for compartmentalization and structural reinforcement.

5. The modular floating offshore wind power platform according to claim 4, characterized in that: The side of the central partition is provided with reinforcing profiles.

6. The modular floating offshore wind power platform according to claim 1, characterized in that: The prefabricated modules connected to the prefabricated center body have a transition section connection and embedding structure embedded inside. One end of the transition section connection and embedding structure is embedded inside the concrete shell of the prefabricated module and is located between the outer steel waterproof plate and the concrete embedding and reinforcing profile of the inner steel waterproof plate of the prefabricated module. The other end is welded to the prefabricated center body.

7. The modular floating offshore wind power platform according to claim 6, characterized in that: The transition section is connected to the embedded structure at one end, which is provided with a shear key and an embedded flange.

8. The modular floating offshore wind power platform according to claim 1, characterized in that: Multiple prefabricated modules are connected by welding or high-strength bolts.

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