Simple protection cage structure of offshore wind turbine single pile foundation

Abstract

The utility model discloses an offshore wind turbine single pile foundation simple protection cage structure, which belongs to the technical field of offshore wind power engineering and comprises two protection cage bodies, the two protection cage bodies can be assembled to form the protection cage structure, a through hole is formed in the protection cage structure, and the protection cage structure is sleeved with a single pile foundation through the through hole. The two protection cage bodies are fixed to the single-pile foundation through connecting assemblies at the splicing positions. The protection cage structure is divided into the prefabricated protection cage bodies, materials are saved in the prefabrication period, and construction difficulty is lowered; and the protection cage body can be directly spliced on a single pile foundation and then fixed, so that the offshore construction difficulty is reduced, and the field construction workload, period and cost are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of offshore wind power engineering, and in particular relates to a simple cage structure for a single pile foundation of an offshore wind turbine. Background Art

[0002] Currently in offshore wind power development, single pile foundation is widely used as the most commonly used and most economical wind turbine foundation form. During the daily inspection and maintenance of the equipment in the wind turbine foundation, personnel use the external integrated cage. Therefore, the overall integrated cage is the main application form of the single pile foundation cage.

[0003] The existing technology has the following disadvantages: the main structure of the existing cage is generally composed of a ring beam, which is heavy in weight, the prefabrication of the ring beam is labor-intensive and difficult, and the welding quality when sealing the plate is difficult to control. The integrated cage needs to be hoisted in a single pile foundation at sea, which requires high hoisting accuracy and hoisting capacity, is difficult to construct, and is difficult to dismantle later.

[0004] Therefore, it is urgent to design a simple cage structure for the single pile foundation of offshore wind turbines to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a simple cage structure for a single pile foundation of an offshore wind turbine, which has the advantages of reducing the difficulty of offshore construction, saving on-site construction workload, cycle and cost, and solving the problems mentioned in the background technology.

[0006] To achieve the above purpose, the specific technical solution of a simple cage structure for a single pile foundation of an offshore wind turbine of the utility model is as follows:

[0007] A simple cage structure for a single pile foundation of an offshore wind turbine comprises two cage bodies which can be assembled to form a cage structure. A through hole is provided on the cage structure. The cage structure is sleeved with the single pile foundation through the through hole. The two cage bodies are fixed to the single pile foundation through a connecting assembly.

[0008] Furthermore, the connection assembly includes bolts, and through holes are provided on the two cage bodies. The bolts pass through the through holes and are screwed to the single pile foundation.

[0009] Furthermore, the cage body includes a walkway structure and a supporting structure. The walkway structure is located above the supporting structure. The walkway structures are fixed by bolts. The supporting structures are fixed by bolts. The walkway structure and the supporting structure are connected by seamless pipes.

[0010] Furthermore, a first fixed leg is fixedly connected to the single pile foundation, the first fixed leg is connected to the walkway structure to support the walkway structure, and the walkway structure is fixedly connected to the first fixed leg by bolts.

[0011] Furthermore, an oblique support leg is fixedly connected to the first fixed support leg, and one end of the oblique support leg away from the first fixed support leg is fixedly connected to the single pile foundation.

[0012] Furthermore, a first fixed rib is provided at the connection between the first fixed leg and the walkway structure.

[0013] Furthermore, a second fixed leg is fixedly connected to the single pile foundation, the second fixed leg is connected to the supporting structure to support the supporting structure, and the supporting structure and the second fixed leg are fixedly connected by bolts.

[0014] Furthermore, a second fixing rib is provided at the connection between the second fixing leg and the supporting structure.

[0015] Furthermore, a fixed positioning corbel is fixedly connected to the single pile foundation, and the fixed positioning corbel is connected to the bottom end of the cage body to support the cage body.

[0016] Furthermore, the specific number of the supporting structures is two, the two supporting structures are connected by a seamless pipe, and the two supporting structures are fixedly connected with a berthing system.

[0017] The utility model has the following advantages: by dividing the cage structure into individual prefabricated cage bodies, materials are saved during prefabrication and the construction difficulty is reduced; and the cage bodies can be directly assembled on a single pile foundation and then fixed, which reduces the construction difficulty at sea and saves on-site construction workload, cycle and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the simple protective cage of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the first fixed leg and the first fixed rib plate of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the second fixed leg and the second fixed rib plate of the utility model;

[0021] Explanation of the markings in the figure: 1. Cage body; 11. Walkway structure; 12. Support structure; 13. Berthing system; 14. Ladder; 2. Single pile foundation; 3. First fixed leg; 31. Diagonal support leg; 32. First fixed rib plate; 4. Second fixed leg; 41. Second fixed rib plate; 5. Fixed positioning corbel. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0023] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0024] Please refer to the attached Figure 1 To Attachment Figure 3 The utility model describes a simple cage structure for a single pile foundation of an offshore wind turbine.

[0025] At present, the main structure of the existing cage is generally composed of a ring beam, which is heavy in weight. The prefabrication of the ring beam is labor-intensive and difficult, and the welding quality during the sealing is difficult to control. The integrated cage needs to be hoisted in a single pile foundation at sea, which requires high hoisting accuracy and hoisting capacity, is difficult to construct, and is difficult to dismantle in the later stage. Therefore, the cage structure includes two cage bodies 1, which can be assembled to form a cage structure. The cage structure is provided with a through hole, and the cage structure is connected to the single pile foundation 2 through the through hole. The two cage bodies 1 are fixed to the single pile foundation 2 at the assembly position through a connecting component. First, the two cage bodies 1 are prefabricated on land. The cage body 1 is mainly composed of H-shaped steel. After assembly, the two cage bodies 1 form an octagonal cage structure, and only need to be fixed by a connecting component, which reduces the construction difficulty at sea, saves the construction workload, cycle and cost on site, and if the cage structure needs to be dismantled in the later stage, the cage body 1 can be hoisted away from the single pile foundation 2 as a whole after the connecting component is dismantled, which further reduces the difficulty of dismantling at sea.

[0026] Preferably, the connecting component is a bolt, and through holes are opened on the two cage bodies 1. The bolts pass through the through holes and are screwed to the single pile foundation 2 to fix the assembled cage bodies 1 by bolts. In other embodiments of the utility model, the connecting component can also be made of screws, rivets, etc., as long as it can fix the assembled cage body 1 on the single pile foundation 2.

[0027] The cage body 1 includes a walkway structure 11 and a support structure 12. The walkway structure 11 is located above the support structure 12. The walkway structures 11 are fixed by bolts, and the support structures 12 are fixed by bolts. The walkway structure 11 and the support structure 12 are connected by seamless pipes. By setting the walkway structure 11, it is convenient for staff to operate and maintain; by setting the support structure 12, the cage structure can be supported and fixed in multiple ways.

[0028] The first fixed leg 3 is fixedly connected to the monopile foundation 2, and the first fixed leg 3 is connected to the walkway structure 11 to support the walkway structure 11. The walkway structure 11 is fixedly connected to the first fixed leg 3 by bolts. The first fixed leg 3 is fixed to the monopile foundation 2, and then when the cage structure is hoisted, the walkway structure 11 is placed on the first fixed leg 3 to support the walkway structure 11, and the assembly position of the walkway structure 11 is also located on the first fixed leg 3, and then the walkway structure 11 is fixed to the first fixed leg 3 by bolts to complete the assembly of the walkway structure 11.

[0029] Preferably, an oblique support leg 31 is fixedly connected to the first fixed leg 3, and one end of the oblique support leg 31 away from the first fixed leg 3 is fixedly connected to the single pile foundation 2. Since the first fixed leg 3 is relatively long, the oblique support leg 31 is used to support the first fixed leg 3, thereby ensuring the stability of the first fixed leg 3.

[0030] Preferably, a first fixed rib 32 is provided at the connection between the first fixed leg 3 and the walkway structure 11. By providing the first fixed rib 32, the connection effect between the first fixed leg 3 and the walkway structure 11 is improved, and the stability of the connection between the first fixed leg 3 and the walkway structure 11 is improved.

[0031] A second fixed leg 4 is fixedly connected to the single pile foundation 2, and the second fixed leg 4 is connected to the supporting structure 12 to support the supporting structure 12. The supporting structure 12 is fixedly connected to the second fixed leg 4 by bolts, and the second fixed leg 4 is fixed to the single pile foundation 2. Then, when the cage structure is hoisted, the supporting structure 12 is placed on the second fixed leg 4 to support the supporting structure 12, and the assembly point of the supporting structure 12 is also located on the second fixed leg 4. Then, the supporting structure 12 is fixed to the second fixed leg 4 by bolts to complete the assembly of the supporting structure 12.

[0032] Preferably, a second fixed rib 41 is provided at the connection between the second fixed leg 4 and the supporting structure 12. By providing the second fixed rib 41, the connection effect between the second fixed leg 4 and the supporting structure is improved, and the stability of the connection between the second fixed leg 4 and the supporting structure 12 is improved.

[0033] A fixed positioning corbel 5 is fixedly connected to the single pile foundation 2, and the fixed positioning corbel 5 is connected to the bottom end of the cage body 1 to support the cage body 1. The fixed positioning corbel 5 is fixed on the single pile foundation 2, and then when the cage body 1 is hoisted, the bottom of the cage body 1 is placed on the second fixed support leg 4 to provide strong support for the cage body 1.

[0034] The specific number of the supporting structures 12 is two, and the two supporting structures 12 are connected by a seamless pipe. The two supporting structures 12 are fixedly connected with a berthing system 13. By arranging the berthing system 13 on the supporting structure 12, the berthing system 13 and the cage body 1 are prefabricated as a whole.

[0035] A ladder 14 is provided on the berthing system 13, the top of the ladder 14 is fixedly connected to the walkway structure 11, and the end of the ladder 14 away from the walkway structure 11 is fixedly connected to the support structure 12. By setting up the ladder 14, the effect of the staff climbing to the walkway structure 11 through the ladder 14 is achieved after berthing at the berthing system 13.

[0036] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A simple cage structure for a single pile foundation of an offshore wind turbine, characterized in that: It includes two cage bodies, which can be assembled to form a cage structure. A through hole is opened on the cage structure, and the cage structure is sleeved with the single pile foundation through the through hole. The two cage bodies are fixed to the single pile foundation at the assembly position through a connecting component.

2. The simple cage structure for offshore wind turbine monopile foundation according to claim 1 is characterized in that: The connection assembly includes bolts. Through holes are provided on the two cage bodies. The bolts pass through the through holes and are screwed to the single pile foundation.

3. The simple cage structure for the offshore wind turbine monopile foundation according to claim 2 is characterized in that: The cage body includes a walkway structure and a supporting structure. The walkway structure is located above the supporting structure. The walkway structures are fixed by bolts, and the supporting structures are fixed by bolts. The walkway structure and the supporting structure are connected by seamless pipes.

4. The simple cage structure for the offshore wind turbine monopile foundation according to claim 3 is characterized in that: A first fixed leg is fixedly connected to the single pile foundation, and the first fixed leg is connected to the walkway structure to support the walkway structure. The walkway structure and the first fixed leg are fixedly connected by bolts.

5. The simple cage structure for offshore wind turbine monopile foundation according to claim 4 is characterized in that: The first fixed leg is fixedly connected with an oblique support leg, and one end of the oblique support leg away from the first fixed leg is fixedly connected to the single pile foundation.

6. The simple cage structure for offshore wind turbine monopile foundation according to claim 4 is characterized in that: A first fixed rib plate is provided at the connection between the first fixed leg and the walkway structure.

7. The simple cage structure for offshore wind turbine monopile foundation according to claim 3 is characterized in that: A second fixed leg is fixedly connected to the single pile foundation, the second fixed leg is connected to the supporting structure to support the supporting structure, and the supporting structure and the second fixed leg are fixedly connected by bolts.

8. The simple cage structure for offshore wind turbine monopile foundation according to claim 7 is characterized in that: A second fixing rib is provided at the connection between the second fixing leg and the supporting structure.

9. The simple cage structure for offshore wind turbine monopile foundation according to claim 1 is characterized in that: A fixed positioning corbel is fixedly connected to the single pile foundation, and the fixed positioning corbel is connected to the bottom end of the cage body to support the cage body.

10. The simple cage structure for offshore wind turbine monopile foundation according to claim 3 is characterized in that: The specific number of the supporting structures is two, the two supporting structures are connected by a seamless pipe, and the two supporting structures are fixedly connected with a berthing system.

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