Mat type jacket fan foundation

Abstract

The utility model discloses a cushion type jacket fan foundation, which relates to the technical field of offshore wind power fan foundations, and comprises a jacket, four cushion frames and a connecting seat, the bottom of the jacket is provided with the four cushion frames, and the bottom surface of each cushion frame is provided with a chain net. The bottom surface of the mat frame is designed into the chain net formed by the longitudinal chains and the transverse chains in the crossed mode, the broken stones are arranged in the chain net to serve as ballasts, and when the mat frame is placed in the seabed, the bottom surface of the mat frame can adapt to an uneven seabed through flexible deformation, so that the mat frame is more attached to the seabed, and the service life of the mat frame is prolonged. In this way, the mat frame can be more stable after sinking into the seabed, then the stability of the whole fan foundation is improved, the jacket body can be connected with the mat frame more firmly through concrete through mutual cooperation of the connecting bases, the connecting plates and the barb bodies, and then the whole foundation structure is higher in strength and safer.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore wind turbine foundations, in particular to a mat - type jacket wind turbine foundation. Background Technique

[0002] At present, the forms of wind turbine foundations for offshore wind power generation mainly include: monopile foundation, jacket foundation, high - pile cap foundation, suction bucket foundation, single - pile composite barrel foundation, floating foundation, etc., among which the monopile foundation and the jacket foundation account for the main components.

[0003] Currently, the jacket foundation mainly provides support for the wind turbine foundation in the form of drilling and rock embedding. This not only destroys the natural good compressive capacity of the rock, but also leads to a very long offshore construction operation time and low efficiency due to the need for offshore drilling and rock embedding. At the same time, a large number of drilling operations cause serious pollution to the marine environment. For this reason, the patent authorization announcement number CN218405526 U discloses a mat - type jacket wind turbine foundation, "utilizing the good natural compressive bearing capacity of the rock geology, and ensuring that the wind turbine foundation will not overturn during the operation of the unit by ballasting the mat, which can not only meet the operation requirements of the wind turbine, but also greatly reduce the offshore operation time due to the absence of offshore drilling, thus ensuring the overall benefit of the entire wind farm and better protecting the marine environment". However, the bottom surface of the above - mentioned mat is a rigid structure and cannot adaptively deform according to the shape of the seabed, which further results in a small contact area between the mat and the seabed, and poor stability of the mat frame on the seabed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a mat - type jacket wind turbine foundation to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A mat - type jacket wind turbine foundation, including a jacket, a mat frame and a connecting seat. Four mat frames are arranged at the bottom of the jacket. A chain net is arranged on the bottom surface of the mat frame. Ballast is arranged in the mat frame, and the ballast is gravel. A protective net is installed around the mat frame. A connecting seat is installed on the mat frame. A connecting plate is installed at the bottom of the jacket. A number of anchor rods are evenly installed at the bottom of the connecting plate. Barbs are arranged on the anchor rods. The connecting plate is inserted into the connecting seat. Concrete is filled in both the jacket and the connecting seat.

[0007] As a further solution of the utility model: The jacket includes jacket legs, diagonal braces and plugs. There are four jacket legs in total. The four jacket legs are distributed in a rectangle, and adjacent jacket legs are connected by diagonal braces. Plugs are installed at the bottoms of the jacket legs, and the connecting seat is installed on the plugs.

[0008] As a further solution of the utility model: A pedestal is installed on the jacket.

[0009] As a further solution of the utility model: Both the jacket legs and the plugs are designed to be hollow and communicate with each other.

[0010] As a further solution of the utility model: Lifting lugs are installed on the mat frame.

[0011] As a further solution of the utility model: The chain net includes longitudinal chains and transverse chains. A number of the longitudinal chains and transverse chains are cross-distributed. Both ends of the longitudinal chains and both ends of the transverse chains are welded and fixed to the mat frame.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. In the utility model, by designing the bottom surface of the mat frame into a chain net composed of cross-distributed longitudinal chains and transverse chains, and setting gravel as ballast in the chain net. When the mat frame is placed on the seabed, the chain net on the bottom surface of the mat frame can be filled into the grooves of the uneven seabed through flexible deformation, making the mat frame fit better with the seabed. In this way, the mat frame can be more stable after sinking into the seabed, thereby improving the stability of the entire wind turbine foundation.

[0014] 2. In the utility model, through the mutual cooperation of the connecting seat, the connecting plate and the barbs, the jacket body can be more firmly connected to the mat frame by concrete, thereby making the entire foundation structure stronger and safer. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of a mat-type jacket wind turbine foundation.

[0016] Figure 2 It is a mat-type jacket wind turbine foundation Figure 1 The bottom view of the mat frame in it.

[0017] Figure 3 It is a mat-type jacket wind turbine foundation Figure 1 The enlarged view of the structure at A in it.

[0018] 1. Jacket; 101. Jacket leg; 102. Diagonal brace; 103. Plug; 2. Mat frame; 3. Connection seat; 4. Base; 5. Protection net; 6. Chain net; 601. Longitudinal chain; 602. Transverse chain; 7. Lifting lug; 8. Connection plate; 9. Anchor rod; 10. Concrete; 11. Barbed body. Detailed implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figure 1-2 , in the embodiment of the present invention, a mat-type jacket wind turbine foundation includes a jacket 1, a mat frame 2 and a connection seat 3. Four mat frames 2 are arranged at the bottom of the jacket 1. A chain net 6 is arranged on the bottom surface of the mat frame 2. The chain net 6 includes a longitudinal chain 601 and a transverse chain 602. A number of longitudinal chains 601 and transverse chains 602 are cross-distributed. Both ends of the longitudinal chain 601 and both ends of the transverse chain 602 are welded and fixed to the mat frame 2. Ballast is arranged in the mat frame 2, and the ballast is gravel. A protection net 5 is installed around the mat frame 2. The protection net 5 is made of stainless steel. The jacket 1 includes a jacket leg 101, a diagonal brace 102 and a plug 103. A total of four jacket legs 101 are arranged. The four jacket legs 101 are arranged in a rectangular distribution, and adjacent two jacket legs 101 are connected by a diagonal brace 102. A plug 103 is installed at the bottom of the jacket leg 101. The connection seat 3 is installed on the plug 103. A base 4 is installed on the jacket 1. Both the jacket leg 101 and the plug 103 are designed to be hollow and communicate with each other, so that it is convenient to pour concrete 10 into the jacket leg 101 and the plug 103;

[0021] The length of the longitudinal chain 601 of the chain net 6 is greater than the width of the mat frame 2, and the transverse chain 602 of the chain net 6 is greater than the length of the mat frame 2. Such a design can make the chain net 6 have a larger space to adapt to deformation.

[0022] Please refer to Figure 1 and Figure 3 , a connection seat 3 is installed on the mat frame 2. A connection plate 8 is installed at the bottom of the jacket 1. A number of anchor rods 9 are evenly installed at the bottom of the connection plate 8. Barbed bodies 11 are arranged on the anchor rods 9. The connection plate 8 is inserted into the connection seat 3. Both the jacket 1 and the connection seat 3 are filled with concrete 10;

[0023] The lifting lugs 7 are installed on the mat frame 2, and the setting of the lifting lugs 7 can facilitate the hoisting of the mat frame 2 onto the seabed by an offshore crane ship.

[0024] It should be noted that anti-corrosion coatings are applied to the surfaces of all structures of the present utility model, and the concrete 10 is special underwater concrete.

[0025] The working principle of the present utility model is as follows:

[0026] During use, first, the mat frame 2 filled with gravel is hoisted onto the seabed by an offshore hoisting ship. The gravel is wrapped by the chain net 6 at the bottom of the mat frame 2. When the seabed is uneven, the chain net 6 on the bottom surface of the mat frame 2 can be filled into the grooves of the uneven seabed through the flexible deformation band in cooperation with the gravel, so that the contact surface between the mat frame 2 and the seabed is larger and the contact is closer, thus making the mat frame 2 more stable on the seabed. Then, the jacket 1 is hoisted and installed on the connecting seat 3 on the mat frame 2, that is, the connecting plate 8 is placed into the connecting seat 3, and then grout is poured into the four legs 101 of the jacket 1 from the upper ports of the four legs of the jacket 1 at sea. While pouring the grout, the verticality of the jacket 1 is adjusted to meet the verticality requirements of the foundation. The concrete grout enters the leg 101 and the plug 103 in sequence and finally enters the connecting seat 3 to solidify.

[0027] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A cushion-type pipe frame fan foundation, comprising a pipe frame (1), a cushion frame (2) and a connecting seat (3), characterized in that: Four cushion frames (2) are arranged at the bottom of the conductor frame (1), a chain net (6) is arranged on the bottom surface of the cushion frame (2), ballast is arranged in the cushion frame (2), and the ballast is crushed stone, a protective net (5) is installed around the cushion frame (2), a connecting seat (3) is installed on the cushion frame (2), a connecting plate (8) is installed at the bottom of the conductor frame (1), a plurality of anchor rods (9) are evenly installed at the bottom of the connecting plate (8), a barb (11) is arranged on the anchor rod (9), the connecting plate (8) is plugged into the connecting seat (3), and the conductor frame (1) and the connecting seat (3) are filled with concrete (10).

2. The submerged-mat type jacket fan foundation according to claim 1, characterized in that: The catheter rack (1) comprises a catheter rack leg (101), a diagonal brace (102) and a plug (103); a total of four catheter rack legs (101) are provided, the four catheter rack legs (101) are distributed in a rectangular shape, and two adjacent catheter rack legs (101) are connected via the diagonal brace (102); a plug (103) is installed at the bottom of the catheter rack leg (101), and the connection seat (3) is installed on the plug (103).

3. The submerged-mat type jacket fan foundation according to claim 1, characterized in that: A base (4) is installed on the catheter frame (1).

4. The submerged-mat type jacket fan foundation according to claim 2, characterized in that: The catheter frame leg (101) and the plug (103) are both hollow in design and are interconnected.

5. The cushion-type jacket fan foundation according to claim 1, characterized in that: A lifting lug (7) is installed on the mat frame (2).

6. The submerged-mat type jacket fan foundation according to claim 1, characterized in that: The chain net (6) comprises longitudinal chains (601) and transverse chains (602), a plurality of the longitudinal chains (601) and transverse chains (602) are cross-distributed, and both ends of the longitudinal chains (601) and the transverse chains (602) are welded and fixed to the mat frame (2).

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