Offshore wind power jacket foundation structure capable of suppressing vibration

Abstract

The utility model discloses an offshore wind power jacket foundation structure capable of suppressing vibration, which comprises a plurality of leg columns which are obliquely arranged outwards from top to bottom to form a conical structure; the supporting rods are used for connecting any adjacent jacket leg columns in the height direction; the platform is fixedly connected to the tops of the jacket leg columns; the vibration suppression device is arranged in the conical structure formed by the plurality of leg columns, and the vibration suppression device further comprises a sling which is connected with the platform; the counterweight is connected with the sling; the buffer piece is used for connecting the counter weight with the leg column; wherein each leg column is connected with the counter weight through the buffer piece. The gravity center of the whole structure is reduced through the balance weight, vibration is absorbed through the buffering piece, the purpose of vibration suppression is achieved, and compared with pure use of a viscous damper, cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore wind power, in particular to an offshore wind power conduit foundation structure capable of suppressing vibration. Background Art

[0002] With the increasing depletion of fossil fuels and the increasingly serious problems of environmental pollution and climate change, countries around the world have taken the development and utilization of renewable clean energy as an important way to achieve sustainable development. Wind energy, as a typical renewable clean energy, has developed rapidly in recent years. Among them, offshore wind power has become the focus of current clean energy development due to its rich wind energy resources, low turbulence, and low shear. Offshore wind power structures, especially offshore wind power structures with high foundation heights, are susceptible to loads such as wind, waves, ice, currents, and earthquakes in complex marine environments. The resulting severe vibration response of the structure has received widespread attention and attention from engineers.

[0003] In recent years, patents for vibration suppression of offshore wind power structure foundations include "An offshore wind power conductor frame structure with additional viscous dampers (CN113106999A)", which uses a combination of viscous dampers and conductor frame diagonal bracing rods to suppress the vibration response of the entire foundation structure. However, the number of viscous dampers used is large, the price is high, and they generally have poor weather resistance and high maintenance costs. Therefore, how to propose an economical and efficient vibration suppression device to suppress the vibration response of the offshore wind power conductor frame foundation structure and extend the fatigue life of the conductor frame foundation structure is also a key engineering and technical problem that needs to be solved urgently. Utility Model Content

[0004] The purpose of the utility model is to provide an offshore wind power conduit foundation structure with vibration suppression in view of the defects of the prior art, so as to achieve the purpose of vibration suppression through the cooperation of counterweights and buffer parts.

[0005] The utility model provides an offshore wind power conductor frame foundation structure for suppressing vibration, including: a leg column, a plurality of the leg columns are tilted outward from top to bottom to form a conical structure; a strut, the strut connects any adjacent conductor frame leg columns along the height direction; a platform, the platform is fixed to the top of a plurality of conductor frame leg columns; a vibration suppression device, the vibration suppression device is arranged in the conical structure formed by the plurality of leg columns, and also includes: a sling, the sling is connected to the platform; a counterweight, the counterweight is connected to the sling; a buffer, the buffer connects the counterweight to the leg column; wherein each leg column is connected to the counterweight through the buffer. The center of gravity of the overall structure is lowered by the counterweight, and the vibration is absorbed by the buffer, so as to achieve the purpose of vibration suppression.

[0006] Furthermore, the counterweight is located on the central axis of the conical structure formed by the leg columns, which is beneficial to prevent the center of gravity from shifting.

[0007] Furthermore, the shortest distance between the edge of the counterweight and the leg column is not less than 15 cm to prevent collision with the leg column.

[0008] Furthermore, the buffer member is a spring.

[0009] Furthermore, the buffer is a viscous damper. Furthermore, the stiffness and strength of the viscous damper are less than the stiffness and strength of the support rod. Thus, the viscous damper deforms before the support rod to absorb vibration.

[0010] Furthermore, it also includes a flange, which is arranged on the top of the platform and is used to place the wind turbine tower.

[0011] Furthermore, it also includes a barrel-type foundation, which is arranged at the bottom end of the leg column and is used to fix the leg column.

[0012] Furthermore, there are three leg columns, and the three leg columns form a triangular pyramid structure.

[0013] Furthermore, the sling is a steel wire rope.

[0014] The beneficial effects of the utility model are as follows: the center of gravity of the overall structure is lowered by counterweight, and vibration is absorbed by the buffer component, so as to achieve the purpose of vibration suppression, and the cost is reduced compared with the pure use of viscous dampers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0016] Figure 2 This is a schematic diagram of the structure of Example 2 of the utility model.

[0017] Figure numerals: 1-leg column; 2-strut; 3-platform; 4-vibration suppression device; 41-sling; 42-counterweight; 43-buffer; 5-flange; 6-cylinder foundation. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0019] Example 1

[0020] like Figure 1As shown, the vibration-controlling offshore wind turbine conductor frame foundation structure includes: a leg column 1, three leg columns 1 are tilted outward from top to bottom to form a triangular pyramid structure; a strut 2, the strut 2 connects any adjacent conductor frame leg columns 1 along the height direction; a platform 3, the platform 3 is fixed to the top of a plurality of conductor frame leg columns 1; a vibration suppression device 4, the vibration suppression device 4 is arranged in the triangular pyramid structure, and also includes: a sling 41, the sling 41 is connected to the platform 3, and the sling 41 is a steel wire rope; a counterweight 42, the counterweight 42 is connected to the sling 41 and Located on the central axis of the triangular pyramid structure, it is beneficial to prevent the center of gravity from shifting. The shortest distance between the edge of the counterweight 42 and the leg column 1 is not less than 15 cm to prevent collision with the leg column 1; buffer 43, the buffer 43 connects the counterweight 42 to the leg column 1, the buffer 43 is a spring, and each leg column 1 is connected to the counterweight 42 through the buffer 43; flange 5, the flange 5 is set at the top of the platform 3, used to place the wind turbine tower; barrel foundation 6, the barrel foundation 6 is set at the bottom of the leg column 1, used to fix the leg column 1. The center of gravity of the overall structure is lowered by the counterweight 42, and the vibration is absorbed by the buffer 43. At the same time, the barrel foundation 6 further improves the structural stability to achieve the purpose of vibration suppression.

[0021] Example 2

[0022] like Figure 2 As shown, a vibration-suppressing offshore wind turbine conductor frame foundation structure comprises: a leg column 1, wherein three leg columns 1 are tilted outward from top to bottom to form a triangular pyramid structure; a strut 2, wherein the strut 2 connects any adjacent conductor frame leg columns 1 along the height direction; a platform 3, wherein the platform 3 is fixedly connected to the top of a plurality of conductor frame leg columns 1; a vibration suppression device 4, wherein the vibration suppression device 4 is arranged in the triangular pyramid structure, and further comprises: a sling 41, wherein the sling 41 is connected to the platform 3, and the sling 41 is a steel wire rope; a counterweight 42, wherein the counterweight 42 is connected to the sling 41 and is located on the central axis of the triangular pyramid structure. It is beneficial to prevent the center of gravity from shifting. The shortest distance between the edge of the counterweight 42 and the leg column 1 is not less than 15 cm to prevent collision with the leg column 1; buffer 43, the buffer 43 connects the counterweight 42 with the leg column 1, the buffer 43 is a viscous damper, the rigidity and strength of the viscous damper are less than the rigidity and strength of the strut 2, and each leg column 1 is connected to the counterweight 42 through the buffer 43; flange 5, the flange 5 is set at the top of the platform 3, and is used to place the wind turbine tower; the barrel foundation 6, the barrel foundation 6 is set at the bottom of the leg column 1, and is used to fix the leg column 1. The center of gravity of the overall structure is lowered by the counterweight 42, and the vibration is absorbed by the buffer 43. At the same time, the barrel foundation 6 further improves the structural stability to achieve the purpose of vibration suppression.

[0023] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An offshore wind power pipe frame foundation structure for suppressing vibration, characterized in that: include: Leg columns (1), wherein a plurality of leg columns (1) are arranged to be inclined outward from top to bottom to form a conical structure; A support rod (2), wherein the support rod (2) connects any adjacent leg columns (1) along the height direction; A platform (3), the platform (3) being fixedly connected to the tops of the plurality of leg columns (1); A vibration suppression device (4), the vibration suppression device (4) being arranged in a conical structure formed by a plurality of the leg columns (1), the vibration suppression device (4) further comprising: A sling (41), wherein the sling (41) is connected to the platform (3); a counterweight (42), the counterweight (42) being connected to the sling (41); A buffer member (43), wherein the buffer member (43) connects the counterweight (42) to the leg column (1); Wherein, each leg column (1) is connected to the counterweight (42) via the buffer component (43).

2. The offshore wind power pipe frame foundation structure for suppressing vibration according to claim 1, characterized in that: The counterweight (42) is located on the central axis of the conical structure formed by the plurality of leg columns (1).

3. The offshore wind power conduit foundation structure for suppressing vibration according to claim 1, characterized in that: The shortest distance between the edge of the counterweight (42) and the leg column (1) is not less than 15 cm.

4. The offshore wind power conduit foundation structure for suppressing vibration according to claim 1, characterized in that: The buffer member (43) is a spring.

5. The offshore wind power pipe frame foundation structure for suppressing vibration according to claim 1, characterized in that: The buffer (43) is a viscous damper.

6. The offshore wind power pipe frame foundation structure for suppressing vibration according to claim 5, characterized in that: The rigidity and strength of the viscous damper are smaller than the rigidity and strength of the support rod (2).

7. The offshore wind power pipe frame foundation structure for suppressing vibration according to claim 1, characterized in that: Also includes: A flange (5) is arranged on the top of the platform (3) and is used for placing a wind turbine tower.

8. The offshore wind power pipe frame foundation structure for suppressing vibration according to claim 1, characterized in that: Also includes: A cylindrical foundation (6) is arranged at the bottom end of the leg column (1) and is used to fix the leg column (1).

9. The offshore wind power conduit foundation structure for suppressing vibration according to claim 1, characterized in that: There are three leg columns (1), and the three leg columns (1) form a triangular pyramid structure.

10. The offshore wind power pipe frame foundation structure for suppressing vibration according to claim 1, characterized in that: The sling (41) is a steel wire rope.

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