Semi-submersible fan foundation convenient to disassemble and offshore fan

Abstract

The utility model discloses a semi-submersible type wind turbine foundation convenient to disassemble and an offshore wind turbine, and belongs to the technical field of wind power generation. The wind turbine foundation comprises a base, a stand column type buoyancy tank and a supporting platform which are sequentially arranged from bottom to top, the stand column type buoyancy tank is fixedly installed on the base in the circumferential direction of the axis direction of the base, and the supporting platform is fixedly installed on the buoyancy tank. Annular fixing seats matched with the two ends of the buoyancy tank are fixedly installed on the base and the supporting platform, a plurality of inserting holes are formed in the fixing seats in the circumferential direction with the axis of the fixing seats as the center, and a plurality of limiting grooves communicated with the inserting holes one to one are formed in the fixing seats. A plurality of limiting blocks in one-to-one correspondence with the inserting holes are arranged on the floating box, and after the floating box is inserted into the inserting holes through the limiting blocks, the limiting blocks can be rotated into the limiting grooves by rotating the floating box so as to limit displacement of the floating box in the axis direction. During disassembly, the supporting platform and the floating box can be disassembled by rotating the floating box, and the effect of facilitating disassembly and assembly is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind power generation, and particularly relates to a semi-submersible wind turbine foundation and an offshore wind turbine which are convenient to disassemble. Background Technique

[0002] With the large-scale development of onshore wind energy resources and the limitation of onshore wind energy utilization by geographical environment, wind energy resources have gradually shifted from onshore to offshore. Moreover, offshore wind resources are rich and the offshore power generation efficiency is higher.

[0003] The offshore floating wind turbine mainly consists of a floating foundation platform, a wind turbine and a mooring system. The wind turbine foundation generally includes a reinforced concrete caisson and a steel structure wind turbine foundation arranged on the reinforced concrete caisson. Part of the foundation is buried in the reinforced concrete caisson, and the foundation part exposed from the reinforced concrete caisson is used for installing the wind turbine tower barrel, which is a transition component for connecting the wind turbine foundation and the tower barrel. The overall structure of this wind turbine foundation is huge, and it needs to be assembled on the land shore, launched by a floating dock, and the buoyancy of the floating box and the ballast water volume are controlled to realize the floating of the foundation platform, and then transported to the designated position by a barge.

[0004] In the prior art, a Chinese patent with the publication number of CN 220487769 U discloses a semi-submersible wind turbine foundation and an offshore floating wind turbine. The floating box realizes rapid installation through the cooperation of a buckle and a clamping block, which improves the installation efficiency. However, in the above technology, the buckle is clamped with a plurality of circumferentially arranged clamping blocks in the clamping component. Although it is convenient for installation, when disassembling, it is necessary to slide out a plurality of clamping blocks from the buckle at the same time, resulting in difficult disassembly.

[0005] Therefore, it is necessary to propose a semi-submersible wind turbine foundation and an offshore wind turbine which are convenient to disassemble to solve the above problems. Summary of the Utility Model

[0006] In view of this, the purpose of the utility model is to provide a semi-submersible wind turbine foundation and an offshore wind turbine which are convenient to disassemble, so as to solve the problem of difficult disassembly in the prior art.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] The utility model provides a semi-submersible wind turbine foundation which is convenient for disassembly, comprising a base arranged from bottom to top, a columnar floating box fixedly installed on the base circumferentially along the axial direction of the base, and a support platform fixedly installed on the floating box. Fixed seats arranged in a ring and respectively cooperating with two ends of the floating box are fixedly installed on the base and the support platform. A plurality of jacks are circumferentially arranged on the fixed seat with the axis of the fixed seat as the center. A plurality of limiting grooves respectively communicated with the jacks one by one are arranged in the fixed seat. A plurality of limiting blocks corresponding to the jacks one by one are arranged on the floating box. After the floating box is inserted into the jacks through the limiting blocks, rotating the floating box can make the limiting blocks rotate into the limiting grooves to limit the displacement of the floating box along the axial direction.

[0009] Further, two adjacent limiting grooves are arranged separately.

[0010] Further, the first side wall of the limiting groove and the first side wall of the jack are located in the same plane.

[0011] Further, a cover plate is fixedly installed on the floating box on the side away from the fixed seat of the limiting block. The cover plate can cover the fixed seat to close the jack when the limiting block moves into the limiting groove.

[0012] Further, a tapered groove communicated with the inner hole of the fixed seat is arranged on the fixed seat. A first inclined edge with the same inclination angle as the tapered groove is arranged at the end of the floating box close to the fixed seat.

[0013] Further, the cover plate can cooperate with the tapered groove to close the tapered groove.

[0014] Further, the long side diameter of the tapered groove is larger than the diameter of the floating box, and the short side diameter of the tapered groove is the same as the inner hole diameter of the fixed seat and the diameter of the floating box.

[0015] Further, a second inclined edge cooperating with the tapered groove is arranged on the limiting block.

[0016] A wind turbine, comprising a semi-submersible wind turbine foundation which is convenient for disassembly and a wind turbine body installed on the support platform.

[0017] The beneficial effects of the utility model are as follows:

[0018] The utility model realizes the installation of the wind turbine foundation by inserting the floating box into the fixed seat and then rotating it. When disassembling, by rotating the floating box to make the limiting blocks correspond to the jacks, the support platform and the floating box can be disassembled, which plays a role in facilitating disassembly and installation; and by arranging a plurality of limiting blocks, the stability of the installation of the floating box is ensured.

[0019] Other advantages, objectives, and features of the present utility model will be elaborated in the subsequent description, and to some extent, they are obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the following description. Brief Description of the Drawings

[0020] To make the objectives, technical solutions, and beneficial effects of the present utility model clearer, the following drawings are provided for the description of the present utility model:

[0021] Figure 1 Schematic diagram of the connection between the floating box and the fixed seat of the present utility model;

[0022] Figure 2 Schematic diagram of the overall structure of the fan foundation of the present utility model.

[0023] The reference signs in the drawings are as follows: base 1, floating box 2, limit block 201, cover plate 202, first inclined edge 203, second inclined edge 204, support platform 3, fixed seat 4, jack 401, limit groove 402, tapered groove 403. Detailed Description of the Preferred Embodiments

[0024] As Figures 1 - 2 shown, the present utility model provides a semi-submersible fan foundation that is easy to disassemble, which is provided with a base 1, a plurality of column-shaped floating boxes 2 arranged circumferentially along the axis direction of the base 1, and a support platform 3 from bottom to top. Annular fixed seats 4 that are respectively matched with both ends of the floating boxes 2 are fixedly installed on the base 1 and the support platform 3. A plurality of jacks 401 are circumferentially arranged on the fixed seat 4 with the axis of the fixed seat 4 as the center. A plurality of limit grooves 402 that are respectively communicated with the jacks 401 one by one are arranged in the fixed seat 4. A plurality of limit blocks 201 corresponding to the jacks 401 one by one are arranged on the floating box 2. After the floating box 2 is inserted into the jack 401 along the limit block 201, rotating the floating box 2 can make the limit block 201 rotate into the limit groove 402 to limit the displacement of the floating box 2 along the axis direction.

[0025] In this solution, when installing the fan foundation, the fixed seat 4 is fixedly connected to the installation positions of the base 1 and the support platform 3 respectively. Among them, the fixing method of the fixed seat 4 to the base 1 or the support platform 3 can be fixed by bolts or integrally formed; when installing the floating box 2, the floating box 2 is slid down along the inner hole of the fixed seat 4. Among them, the limit blocks 201 fixedly installed on the peripheral wall of the floating box 2 are inserted into the fixed seat 4 corresponding to the jacks 401 one by one, and then the support platform 3 is installed on the floating box 2 in the same way, and then the floating box 2 is rotated to make the limit block 201 rotate into the limit groove 402 and be misaligned with the jack 401, so as to realize the connection and fixation of the base 1, the floating box 2, and the support platform 3.

[0026] In this solution, the floating box 2 is inserted into the fixed seat 4 and then the installation of the fan foundation is achieved by rotation. When disassembling, by rotating the floating box 2, the limit block 201 is aligned with the jack 401, and the support platform 3 and the floating box 2 can be disassembled, which facilitates disassembly and installation; and by setting a plurality of limit blocks 201, the stability of the installation of the floating box 2 is ensured.

[0027] In an embodiment of the present invention, two adjacent limit grooves 402 are arranged separately, so that when the limit block 201 rotates in the limit groove 402, it can abut against the side wall of the limit groove 402, which is convenient for the operator to judge whether the limit block 201 is installed in place.

[0028] In an embodiment of the present invention, the first side wall of the limit groove 402 and the first side wall of the jack 401 are located in the same plane. When the limit block 201 rotates in the limit groove 402 and abuts against the first side wall of the limit groove 402, the floating box 2 is slid out along the jack 401 to disengage from the fixed seat 4, which is convenient for the operator to judge the position of the floating box 2 during disassembly.

[0029] In an embodiment of the present invention, a cover plate 202 is fixedly installed on the floating box 2, and the cover plate 202 is installed on the side of the limit block 201 away from the fixed seat 4. When the limit block 201 moves into the limit groove 402, the cover plate 202 covers the fixed seat 4 to close the jack 401, thereby ensuring the sealing performance between the floating box 2 and the fixed seat 4 after the floating box 2 is installed.

[0030] In an embodiment of the present invention, a conical groove 403 communicating with the inner hole of the fixed seat 4 is provided on the fixed seat 4, and a first inclined edge 203 with the same inclination angle as the conical groove 403 is provided at the end of the floating box 2 close to the fixed seat 4.

[0031] In this solution, the long side diameter of the conical groove 403 is larger than the diameter of the floating box 2, the short side diameter of the conical groove 403 is the same as the inner hole diameter of the fixed seat 4 and is also the same as the diameter of the floating box 2. When the floating box 2 is inserted into the inner hole of the fixed seat 4, the first inclined edge 203 of the floating box 2 slides into the conical groove 403, which is convenient for the automatic alignment of the floating box 2 during insertion and reduces the difficulty of manually aligning the floating box 2 with the inner hole of the fixed seat 4.

[0032] In an embodiment of the present invention, the cover plate 202 can cooperate with the conical groove 403 to close the conical groove 403.

[0033] In an embodiment of the present invention, a second inclined edge 204 cooperating with the conical groove 403 is provided on the limit block 201, so as to facilitate the limit block 201 to slide into the inner hole of the fixed seat 4 along the conical groove 403.

[0034] An offshore wind turbine, comprising the above-mentioned semi-submersible wind turbine foundation that is easy to disassemble and a wind turbine body installed on the support platform 3.

[0035] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in terms of form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A semi-submersible wind turbine foundation that is easy to disassemble, comprising a base arranged in sequence from bottom to top, a column-type pontoon fixedly installed on the base in the circumferential direction along the axis direction of the base, and a supporting platform fixedly installed on the pontoon, characterized in that: The base and the support platform are fixedly installed with annular fixing seats that respectively cooperate with the two ends of the buoyancy box. The fixing seat is circumferentially provided with a plurality of holes with the axis of the fixing seat as the center. The fixing seat is provided with a plurality of limiting grooves that are respectively connected to the holes one by one. The buoyancy box is provided with a plurality of limiting blocks that correspond to the holes one by one. After the buoyancy box is inserted along the buoyancy box through the limiting blocks, rotating the buoyancy box can cause the limiting blocks to rotate into the limiting grooves to limit the displacement of the buoyancy box along the axial direction.

2. The semi-submersible wind turbine foundation that is easy to disassemble according to claim 1 is characterized in that: Two adjacent limiting grooves are arranged separately.

3. The semi-submersible wind turbine foundation that is easy to disassemble according to claim 2 is characterized in that: The first side wall of the limiting groove and the first side wall of the insertion hole are located in the same plane.

4. The semi-submersible wind turbine foundation that is easy to disassemble according to claim 3 is characterized in that: A cover plate is fixedly mounted on the floating box at the side of the limiting block away from the fixing seat, and the cover plate can cover the fixing seat to close the insertion hole when the limiting block moves into the limiting groove.

5. The semi-submersible wind turbine foundation that is easy to disassemble according to claim 4 is characterized in that: The fixing seat is provided with a tapered groove which is communicated with the inner hole of the fixing seat, and the end of the floating box close to the fixing seat is provided with a first inclined edge which is consistent with the inclination angle of the tapered groove.

6. The semi-submersible wind turbine foundation that is easy to disassemble according to claim 5 is characterized in that: The cover plate can cooperate with the tapered groove to close the tapered groove.

7. The semi-submersible wind turbine foundation that is easy to disassemble according to claim 6 is characterized in that: The long side diameter of the tapered groove is larger than the diameter of the buoyancy box, and the short side diameter of the tapered groove is consistent with the inner hole diameter of the fixing seat and the diameter of the buoyancy box.

8. The semi-submersible wind turbine foundation that is easy to disassemble according to claim 7 is characterized in that: The limiting block is provided with a second inclined edge matched with the tapered groove.

9. An offshore wind turbine, characterized in that: It comprises a semi-submersible wind turbine foundation that is easy to disassemble as described in any one of claims 1 to 8 and a wind turbine body installed on a supporting platform.

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