A multi-foil shared mooring anchor foundation suitable for wave energy devices

Abstract

The application discloses a kind of multi-wing shared mooring anchor foundations suitable for wave energy device, belong to the field of ocean engineering, including the anchor cover in upper part, sleeve in middle part and shared anchor foundation in lower part, anchor cover includes round plate, connecting rod arranged on the top surface of round plate and column body arranged on the bottom surface of round plate, column body is sleeved into sleeve, sleeve is connected with anchor cover by chain, shared anchor foundation is the cylinder with both ends open, wing plate is arranged on the outer wall of cylinder along the axial direction, slot is formed on the lower part of sleeve matched with wing plate, cylinder is sleeved into sleeve, multiple anchor eyes are arranged on the outer wall of cylinder to connect anchor chain to form array group shared anchor mooring system.The shared mooring anchor foundation of the application is penetrated into seabed to a certain depth, then anchor cover and sleeve are lifted and removed, shared anchor foundation is buried in seabed, anchor cover and shared anchor foundation are both installed in sleeve, vertical penetration and lifting can be better realized, anchor cover and sleeve are connected by chain, internal suction can be released when lifting, which effectively reduces the difficulty of removal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ocean engineering, in particular to a multi-wing plate shared mooring anchor foundation suitable for wave energy devices. BACKGROUND

[0002] Ocean energy is one of the key directions to break through the world's energy bottleneck. At present, China's energy development is shifting from land to sea strategy, from shallow sea to deep sea development, and developing seabed oil and gas energy and building ocean infrastructure is an important part of China's "Maritime Power" strategy. Floating offshore engineering facilities are developing rapidly, and the safety service of ocean foundation is one of the key problems faced by deep sea engineering and energy development.

[0003] Therefore, it is urgent to research and develop a shared mooring anchor foundation to minimize the influence of wind and waves on the ocean shared anchor foundation, prevent foundation deformation failure, and ensure its safe service. SUMMARY

[0004] In order to solve the above problems, the present application provides a multi-wing plate shared mooring anchor foundation suitable for wave energy devices.

[0005] The present application is realized by the following technical solutions.

[0006] The present application provides a multi-wing plate shared mooring anchor foundation suitable for wave energy devices, which comprises an anchor cover at the upper part, a sleeve at the middle part and a shared anchor foundation at the lower part. The anchor cover comprises a circular plate, a connecting rod arranged on the top surface of the circular plate and a column arranged on the bottom surface of the circular plate. The column is sleeved into the sleeve. The sleeve is connected with the anchor cover through a chain. The shared anchor foundation is a cylinder with open ends. The outer wall of the cylinder is provided with a wing plate along the axial direction. The lower part of the sleeve is provided with a slot matched with the wing plate. The cylinder is sleeved into the sleeve. The outer wall of the cylinder is provided with a plurality of anchor eyes connected with anchor chains to form an array group shared anchor mooring system.

[0007] Further, the chain is vertically suspended.

[0008] Further, the diameter of the circular plate is greater than the outer diameter of the sleeve. A first chain connecting point is arranged on the bottom surface of the circular plate and uniformly distributed along the circumference of the column. A second chain connecting point is arranged on the outer wall of the sleeve. The first chain connecting point and the second chain connecting point are located on the same vertical line for vertical connection of the chain.

[0009] Further, the inner diameter of the sleeve is slightly larger than the outer diameter of the column. The length of the sleeve satisfies the sleeving of the anchor cover and the shared anchor foundation.

[0010] Further, the axial length of the wing plate is not greater than the length of the cylinder. The length of the slot at the lower part of the sleeve is not greater than the length of the wing plate.

[0011] Further, the inner wall of the barrel is provided with annular stiffening ribs and axial stiffening ribs.

[0012] Further, the number of anchor eyes is not limited. The lower part of the sleeve is provided with a slot for inserting the anchor eye.

[0013] Further, the anchor cover, chain, sleeve and shared anchor foundation are all made of corrosion-resistant materials such as high-strength low-alloy steel and nickel alloy.

[0014] The beneficial effects of the present application are:

[0015] 1. After the shared mooring anchor foundation of the present application is driven into the seabed to a certain depth, the anchor cover and the sleeve are lifted and removed, and the shared anchor foundation is buried in the seabed, realizing offshore installation of the anchor foundation. The upper anchor cover and the lower shared anchor foundation are both installed in the middle sleeve, and the chain connects the anchor cover and the sleeve, which can better realize vertical penetration and lifting.

[0016] 2. The vertical bearing capacity of the shared anchor foundation is improved by adding wing plates on the shared anchor foundation.

[0017] 3. By providing annular stiffening ribs and axial stiffening ribs on the shared anchor foundation, on the one hand, additional vertical stress area can be provided to increase the vertical bearing capacity of the shared anchor foundation, and on the other hand, the stiffness of the shared anchor foundation can be increased to better resist the stress deformation of the anchor body.

[0018] 4. The shared mooring anchor foundation is easy to install, and the anchor cover and the sleeve are connected by the chain, and the internal suction force is released when disassembled, which can effectively reduce the difficulty of installation and disassembly caused by large water depth in deep sea, and has a relatively wide popularization significance. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of the shared mooring anchor foundation of the present application;

[0020] Figure 2 is a sectional view of the shared mooring anchor foundation of the present application;

[0021] Figure 3 is a three-dimensional view of the upper anchor cover;

[0022] Figure 4 is a front view of the middle sleeve

[0023] Figure 5 is a top view of the middle sleeve;

[0024] Figure 6 is a perspective view of the lower shared anchor foundation;

[0025] Figure 7 is a top view of the lower shared anchor foundation;

[0026] Figure 8 is a cross-sectional front view of the lower shared anchor foundation;

[0027] Figure 9 is a cross-sectional perspective view of the lower shared anchor foundation;

[0028] Figure 10 is an array group shared anchor mooring system.

[0029] In the drawings:

[0030] 1 - anchor cap, 2 - sleeve, 3 - shared anchor foundation, 4 - chain, 11 - round plate, 12 - connecting rod, 13 - column, 14 - first chain connecting point, 21 - slot, 22 - second chain connecting point, 23 - slotted, 31 - barrel, 32 - wing plate, 33 - anchor eye, 34 - annular stiffener, 35 - axial stiffener. DETAILED DESCRIPTION

[0031] The structure involved in the present application or the technical terms used will be further described below. These descriptions are only used to illustrate the way in which the present application is implemented, and cannot constitute any limitation on the present application.

[0032] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left" and "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the indicated position or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present application, unless otherwise explicitly specified and limited, "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or can be detachable connection, or can be integrated; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] As Figures 1-9As shown, the embodiment introduces a multi-wing shared mooring anchor foundation suitable for wave energy devices, which comprises an upper anchor cover 1, a middle sleeve 2 and a lower shared anchor foundation 3. The anchor cover 1 comprises a circular plate 11, a connecting rod 12 arranged on the top surface of the circular plate 11 and a column 13 arranged on the bottom surface of the circular plate 11. The column 13 is sleeved into the sleeve 2. The sleeve 2 is connected with the anchor cover 1 through a chain 4. The shared anchor foundation 3 is a cylinder 31 with open ends. The cylinder 31 is sleeved into the sleeve 2. Wings 32 are arranged on the outer wall of the cylinder 31 in the axial direction. A slot 21 is arranged on the lower part of the sleeve 2 to cooperate with the wings. A plurality of anchor eyes 33 are arranged on the outer wall of the cylinder 31 to connect anchor chains to form an array group shared anchor mooring system.

[0035] The shared mooring anchor foundation is penetrated into the seabed through the connecting rod 12. After the whole is pressed into the seabed to a certain burial depth, the anchor cover 1 and the sleeve 2 are lifted and removed, and the shared anchor foundation 3 is buried in the seabed, so as to realize the installation of the shared anchor foundation 3 on the sea. The upper anchor cover 1 and the lower shared anchor foundation 3 are arranged in the middle sleeve 2, which can better realize the vertical penetration and lifting. The anchor cover 1 and the sleeve 2 are connected through the chain 4, so that the internal suction can be released during lifting, thereby effectively reducing the difficulty of removal.

[0036] As shown in Figure 2 , the inner diameter of the sleeve 2 is slightly larger than the outer diameter of the column 13, so that the column 13 can be easily sleeved into the sleeve 2 from the top of the sleeve 2. The anchor cover 1 is sleeved into the sleeve 2 to prevent the shared mooring anchor foundation from toppling during installation and penetration.

[0037] As shown in Figure 3 , 4 and 5, three first chain connection points 14 are arranged on the bottom surface of the circular plate 11 and are uniformly distributed around the column 13. Three second chain connection points 22 are arranged on the outer wall of the sleeve 2 for connecting the three chains 4. When the upper anchor cover 1 is pulled out, the middle sleeve 2 can also be pulled out through the chain 4. The first chain connection points 14 and the second chain connection points 22 are on the same vertical line, which is used for vertical suspension of the chain 4. The chain 4 is used to connect the anchor cover 1 and the sleeve 2, so that the force of the sleeve 2 on the anchor cover 1 remains vertical, so that no inclined tension is generated in the horizontal plane, and the connecting force can be maximized.

[0038] As shown in Figure 2 , the diameter of the circular plate 11 is greater than the outer diameter of the sleeve 2, so that the chain 4 can be arranged vertically opposite the second chain connection points 22.

[0039] As shown in Figure 2 , the length of the wing 32 is the same as the length of the cylinder 31. The length of the wing 32 is kept consistent with the cylinder 31 to maximize the length of the wing 32, so as to obtain a larger vertical force area. The larger the vertical force area, the greater the carrying capacity. The specific length-width ratio of the wing 32 is determined according to the stress analysis confirmed by test or vertical simulation.

[0040] As shown in Figure 1 , the length of the slot 21 in the lower part of the sleeve 2 is less than the length of the wing plate 32, that is, the wing plate 32 is not entirely inserted into the slot 21, and part of it is exposed.

[0041] As shown in Figure 6 , 7 , the outer wall of the barrel 31 is uniformly distributed with 6 wing plates 32.

[0042] As shown in Figure 8 , 9 , the inner wall of the barrel 31 is provided with 2 groups of annular stiffening ribs 34 arranged at intervals and 4 groups of axial stiffening ribs 35 arranged uniformly. On the one hand, it can provide additional vertical force area to increase the vertical bearing capacity of the shared anchor foundation 3, and on the other hand, it can increase the stiffness of the shared anchor foundation 3 to better resist the stress deformation of the anchor body.

[0043] Since the shared anchor foundation 3 finally left in the soil relies on the external wing plate 32 to provide vertical bearing capacity and is strengthened by the annular stiffening ribs 34 and the axial stiffening ribs 35, in order to ensure its bearing performance in the early stage of service, a certain placement period needs to be set according to the actual conditions such as soil strength during installation.

[0044] As shown in Figure 1 , the lower part of the sleeve 2 is provided with a slot 23 matched with the anchor eye 33.

[0045] As shown in Figure 10 , the outer wall of the shared anchor foundation 3 is uniformly provided with 3 anchor eyes 33 in the circumferential direction, and a shared system is formed by three anchor chains intersecting at 120°. The other end of the anchor chain is connected to the floating platform or the infrastructure that needs to be anchored.

[0046] The anchor cover 1, the chain 4, the sleeve 2, and the shared anchor foundation 3 are made of corrosion-resistant materials such as high-strength low-alloy steel and nickel alloy to improve the service life and reduce corrosion.

[0047] The working process of the present application: the anchor cover 1 is sleeved from the top of the sleeve 2, and the anchor cover 1 is connected with the sleeve 2 by the chain 4. The shared anchor foundation 3 is sleeved from the bottom of the sleeve 2, and the wing plate 32 on the shared anchor foundation 3 is inserted into the slot 21 in the lower part of the sleeve 2, and the anchor eye 33 is inserted into the slot 24. The installation of the shared mooring anchor foundation is completed, and the whole is penetrated into the seabed to a certain depth through the connecting rod 12. The anchor cover 1 and the sleeve 2 are lifted and removed, and the shared anchor foundation 3 is buried in the seabed, realizing the installation of the shared anchor foundation on the sea.

[0048] The above merely describes the preferred embodiments of the present application and is not used to limit the present application. Although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments or equivalently replace some technical features thereof, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-bladed shared mooring anchor foundation suitable for wave energy devices, characterized in that: The system includes an upper anchor cap, a middle sleeve, and a lower shared anchor foundation. The anchor cap includes a circular plate, a connecting rod on the top surface of the circular plate, and a column on the bottom surface of the circular plate. The column is fitted into the sleeve, and the sleeve is connected to the anchor cap by a chain. The shared anchor foundation is a cylindrical body with open ends. The outer wall of the cylindrical body is provided with axially arranged wing plates, the length of which is the same as the length of the cylindrical body. The lower part of the sleeve has a slot that mates with the wing plates. The cylindrical body is fitted into the sleeve. The outer wall of the cylindrical body is provided with multiple anchor holes to connect anchor chains to form an array of shared anchoring systems.

2. The multi-bladed shared mooring anchor foundation for wave energy devices according to claim 1, characterized in that: The chain is suspended vertically.

3. The multi-bladed shared mooring anchor foundation for wave energy devices according to claim 2, characterized in that: The diameter of the circular plate is larger than the outer diameter of the sleeve. A first chain connection point is set on the bottom surface of the circular plate and evenly distributed along the circumference of the column. A second chain connection point is set on the outer wall of the sleeve. The first chain connection point and the second chain connection point are located on the same vertical line.

4. The multi-bladed shared mooring anchor foundation for wave energy devices according to claim 1, characterized in that: The inner diameter of the sleeve is larger than the outer diameter of the cylinder.

5. The multi-bladed shared mooring anchor foundation for wave energy devices according to claim 1, characterized in that: The inner wall of the cylinder is provided with annular stiffening ribs and axial stiffening ribs.

6. The multi-bladed shared mooring anchor foundation for wave energy devices according to claim 1, characterized in that: The lower part of the sleeve is provided with a slot for anchor insertion.

7. The multi-bladed shared mooring anchor foundation for wave energy devices according to claim 1, characterized in that: The anchor cap, chain, sleeve, and shared anchor foundation are all made of corrosion-resistant materials.

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