Fan foundation suitable for deepwater

Abstract

A draught fan foundation suitable for deepwater comprises a cylindrical central supporting barrel foundation with the bottom of an open structure, a fixing rod is arranged at the top of the central supporting barrel foundation, a top structural frame is fixed to the top of the fixing rod, a top flange used for installing a draught fan is arranged on the top structural frame, and a stabilizing assembly is arranged on the peripheral side of the fixing rod. The center truss and the large-size suction type bucket foundation at the bottom of the center truss are used for bearing, the requirement for vertical loads is met, meanwhile, water flow resistance is reduced, and structural stability is improved. A supporting frame extending outwards is arranged at the bottom along a central truss, and a small-size bearing barrel foundation is arranged at the tail end, so that the swing stability of a central structure is enhanced, the overall foundation is high in underwater stability, the fan foundation can be installed without piling, the steel consumption is reduced, manufacturing is convenient, batch manufacturing can be rapidly formed, use in a deep water area is achieved, and the cost is reduced. The economical efficiency is greatly improved, and offshore wind power is promoted to move to deep and far seas.

Description

Technical Field

[0001] The utility model relates to the technical field of fixing a wind turbine generator set, in particular to a wind turbine foundation suitable for deep water. Background Art

[0002] In recent years, with the continuous development of offshore wind power, offshore wind power development has gradually moved into deepwater. Since offshore wind power imposes strict investment restrictions on overall construction and requires economic efficiency, single pile foundations are generally used. These advantages, such as reduced manufacturing steps using rolled plate, high economic efficiency, rapid offshore construction, and mature technology, have led to widespread adoption. However, as water depth increases, the diameter of the single pile increases significantly, along with the overall weight, resulting in significant underwater resistance and impacting wind turbine stability. Therefore, we have designed a wind turbine foundation suitable for deepwater applications that utilizes multiple suction bucket foundations for support and a submerged truss structure to reduce water resistance, improve structural stability, and enable deepwater installation without the need for piling. Utility Model Content

[0003] The utility model aims to provide a fan foundation suitable for deep water, with high stability of the entire foundation in water and easy manufacturing.

[0004] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0005] The utility model proposes a wind turbine foundation suitable for deep water, comprising a central supporting barrel base with a cylindrical bottom and an open structure, a fixing rod being provided on the top of the central supporting barrel base, a top structural frame being fixed on the top of the fixing rod, a top flange for installing the wind turbine being provided on the top structural frame, and a stabilizing component being provided on the periphery of the fixing rod.

[0006] Furthermore, there are at least three fixing rods.

[0007] Furthermore, the fixing rods are fixedly connected by a plurality of diagonal braces.

[0008] The stabilizing component further includes an outer stabilizing barrel base, which is a cylindrical structure with an open bottom. A connecting rod is vertically arranged on the top of the outer stabilizing barrel base; the connecting rod is fixedly connected to the fixing rod via a bottom support frame.

[0009] Furthermore, a lifting lug is provided on the top of the connecting rod.

[0010] Furthermore, the top structural frame is a triangle, and each of the three corners of the triangle has a chamfer.

[0011] The beneficial effects of this utility model are as follows: the load is carried by the central truss and the large suction bucket base at its bottom, meeting the vertical load requirements while reducing water flow resistance and improving structural stability. An outward-extending support frame is arranged along the bottom of the central truss, and a small-sized load-bearing bucket base is also arranged at the end to strengthen the swing stability of the central structure. The overall foundation has high underwater stability, and the wind turbine foundation can be installed without piling, saving steel. It is easy to manufacture and can be quickly mass-produced, enabling use in deepwater areas, significantly improving economic efficiency, and promoting the development of offshore wind power in the deep sea. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the present utility model.

[0013] Figure 2 It is a structural sectional view of the present utility model.

[0014] Figure 3 It is a top view of the utility model.

[0015] In the figure, 1-central supporting barrel base, 2-fixing rod, 3-top structural frame, 4-top flange, 5-diagonal brace, 6-external stabilizing barrel base, 7-connecting rod, 8-lifting ear, 9-bottom supporting frame. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] See also Figures 1 to 3 , the utility model provides an embodiment:

[0018] See also Figure 1 and Figure 2 A wind turbine foundation suitable for deep water includes a central supporting barrel base 1 with a cylindrical bottom and an open structure. A fixing rod 2 is provided on the top of the central supporting barrel base 1. A top structural frame 3 is fixed on the top of the fixing rod 2. A top flange 4 for installing the wind turbine is provided on the top structural frame 3. A stabilizing component is provided on the side of the fixing rod 2.

[0019] See also Figure 1 , there are at least 3 fixing rods 2. The fixing rod 2 is a truss structure composed of multiple rods. The rod is a thick-walled seamless pipe or a pipe made of steel plate. According to the bearing capacity, it is supported vertically by 3 to 4 fixing rods 2.

[0020] See also Figure 1 The fixing rods 2 are fixedly connected by a plurality of diagonal braces 5. The diagonal braces 5 can improve the structural stability of the entire fixing rod 2, and the connection between the fixing rods and the diagonal braces constitutes a basic truss structure.

[0021] See also Figure 1The stabilizing assembly includes an outer stabilizing barrel base 6, which is a cylindrical, open-bottomed structure. A connecting rod 7 is vertically mounted on the top of the outer stabilizing barrel base 6. The connecting rod 7 is fixedly connected to the fixing rod 2 via a bottom support frame 9. Once connected via the bottom support frame 9, the outer stabilizing barrel base 6 supports the horizontal load of the entire foundation, improving the overall structural safety.

[0022] See also Figure 1 , a lifting lug 8 is provided on the top of the connecting rod 7. When the lifting lug 8 is installed and lowered to the seabed, the lifting equipment can be installed through the lifting lug 8, which speeds up the installation speed.

[0023] See also Figure 1 and Figure 3 The top structural frame 3 is a triangle, and each of the three corners of the triangle has a chamfer.

[0024] Working Principle: The main structural dimensions are determined based on the wind farm's sea conditions and soil characteristics, and the wind turbine load. Detailed dimensions of the central support base 1 and outer stabilizing base 6 are then determined and constructed. The fixing rods 2 and bottom support frame 9 are made of steel coils to enhance their support strength. The top structural frame 3 and top flange 4 are then installed to form the wind turbine foundation. A floating crane lifts the base and suction penetration equipment is installed on each of the central support base 1 and outer stabilizing base 6. Lifting slings are installed on the top flange 4. The entire wind turbine foundation is lifted and lowered to the seabed. After positioning and verification, the base is lowered into the seabed and inserted under its own weight to a predetermined depth. After a period of stabilization, the suction penetration equipment pumps water from the central support base 1 and outer stabilizing base 6, creating negative pressure and installing them to the designed depth at the seabed location. The required levelness is maintained during the process, and the suction penetration equipment is then retracted, completing the foundation penetration installation. Connect the grouting equipment and pour low-strength cement slurry into the interior spaces of the central support base (1) and the outer stabilizing base (6). This drains the water from the base, securing the top of the base to the seabed for improved load-bearing and safety. Once the work is complete, the grouting equipment is retrieved, and once the foundation settles and stabilizes for a period of time, the wind turbine can be installed.

Claims

1. A wind turbine foundation suitable for deep water, characterized by: It includes a central supporting barrel base with a cylindrical bottom and an open structure. A fixing rod is provided on the top of the central supporting barrel base. A top structural frame is fixed on the top of the fixing rod. A top flange for installing a fan is provided on the top structural frame. A stabilizing component is provided around the fixing rod.

2. The wind turbine foundation suitable for deep water according to claim 1, characterized in that: There are at least three fixing rods.

3. The wind turbine foundation suitable for deep water according to claim 2, characterized in that: The fixing rods are fixedly connected by a plurality of diagonal braces.

4. The wind turbine foundation suitable for deep water according to claim 1, characterized in that: The stabilizing component includes an outer stabilizing barrel base, which is a cylindrical structure with an open bottom. A connecting rod is vertically arranged on the top of the outer stabilizing barrel base; the connecting rod is fixedly connected to the fixing rod via a bottom support frame.

5. The wind turbine foundation suitable for deep water according to claim 4, characterized in that: A lifting lug is provided on the top of the connecting rod.

6. The wind turbine foundation suitable for deep water according to claim 1, characterized in that: The top structural frame is in the shape of a triangle, and each of the three corners of the triangle has a chamfer.

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