Anchoring device of floating structure and anchoring system thereof

Abstract

The utility model provides an anchoring device and an anchoring system of a floating structure. The anchoring device comprises a fixing ring, a connecting ring and a plurality of pull rods. The fixing ring comprises two reinforcing parts and an annular part connected with the two reinforcing parts, and the two reinforcing parts are used for being fixedly connected with the floating structure. The connecting ring is movably arranged on the fixing ring in a sleeving mode and comprises two connecting arms and a bent part connecting the two connecting arms, and the bent part can rotate along the annular part. One end of the pull rod is rotatably connected with the connecting arm; the other ends of the two pull rods are rotationally connected and used for being connected with a mooring rope. The anchoring device of the floating structure and the anchoring system of the anchoring device are convenient to construct, short in construction period and low in construction cost.

Description

Technical Field

[0001] This utility model relates to the field of offshore platform construction, and in particular to an anchoring device and anchoring system for a floating structure. Background Technology

[0002] A floating structure is a structure that can float on the sea surface by using various methods of restraint. Anchoring equipment is typically located on one side of the floating structure. Anchoring equipment usually includes an anchor winch, chain catcher, anchor chain, and anchor body. The anchoring system uses the anchor winch and chain catcher to raise and lower the anchor chain and secure the anchor body at the anchoring point, thus anchoring the floating structure. The anchor winch and chain catcher are large pieces of equipment with complex structures and high costs.

[0003] With the development and utilization of new marine energy sources, various forms of small floating structures are being widely used. Unlike traditional large floating structures, small floating structures are characterized by their small size and low cost. Small floating structures are mostly used in new energy industries such as floating wind turbines, fisheries, hydrogen production experiments, and floating photovoltaic systems. Due to their experimental nature and cost constraints, traditional mooring devices are not suitable for the construction of small floating structures. Utility Model Content

[0004] One objective of this invention is to address the shortcomings of existing technologies and provide a mooring device and system for floating structures that are easier to construct, have a shorter construction period, and lower construction costs.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An anchoring device for a floating structure, comprising:

[0007] The fixing ring includes two reinforcing parts and an annular part connecting the two reinforcing parts, the two reinforcing parts being used for fixed connection with the floating structure;

[0008] A connecting ring, movably fitted onto the fixed ring, the connecting ring including two connecting arms and a bent portion connecting the two connecting arms, the bent portion being rotatable along the annular portion; and

[0009] Multiple tie rods, one end of which is rotatably connected to the connecting arm; the other ends of two tie rods are rotatably connected and used to connect to the mooring cable.

[0010] In one exemplary embodiment, the annular portion and the bent portion are arc-shaped.

[0011] In one exemplary embodiment, the cross-sections of the annular portion and the bent portion are circular.

[0012] In an exemplary embodiment, the reinforcing part has a large end and a small end, the small end is connected to the annular part, the large end is used for fixed connection with the floating structure, and the cross-sectional area of ​​the reinforcing part gradually increases from the small end to the large end.

[0013] In one exemplary embodiment, the width of the connecting arm is greater than the width of the bent portion.

[0014] In an exemplary embodiment, the pull rod includes a body and a first connecting portion and a second connecting portion located at both ends of the body. The first connecting portion is set at an angle to the body, and the body is inclined toward the centerline of the annular portion of the fixing ring, so that the second connecting portions of the two pull rods are close to each other.

[0015] In an exemplary embodiment, a first rotating shaft is detachably provided between the first connecting portion and the connecting arm. The first connecting portion includes two oppositely disposed connecting ears, and the connecting arm is embedded between the two connecting ears. The first rotating shaft is rotatably passed through the two connecting ears and the connecting arm.

[0016] In an exemplary embodiment, a second pivot is detachably provided between the second connecting portions of the two pull rods, wherein the axial directions of the first pivot and the second pivot are parallel or perpendicular to each other.

[0017] In one exemplary embodiment, a connector for connecting a mooring cable is further included, the connector being rotatably connected to a second shaft between the two second connecting portions.

[0018] An anchoring system for a floating structure, comprising the aforementioned anchoring device;

[0019] The mooring cable is fixedly connected to the anchoring device;

[0020] A drive unit is mounted on the floating structure;

[0021] The release rigging has one end connected to the drive device and the other end connected to the mooring line. The drive device raises and lowers the release rigging to retract or extend the mooring line.

[0022] As can be seen from the above technical solution, this utility model has at least the following advantages and positive effects:

[0023] The aforementioned mooring device and system for floating structures, through fixed rings, connecting rings, and tie rod structures, can achieve arbitrary rotation in both the horizontal and vertical planes, meeting the requirements for the range of angle changes and combinations of mooring cables. This mooring device and system are applicable to various platforms, have a wide range of applications, and possess strong load-bearing capacity. Furthermore, the floating structure mooring system is easy to manufacture and has low cost, which helps to reduce the overall construction cost and construction period of floating structures. Attached Figure Description

[0024] Figure 1 This is a top view of an anchoring device installed on a floating structure according to one embodiment;

[0025] Figure 2 yes Figure 1 The diagram shows a three-dimensional structure of the anchoring device mounted on a top-down structure.

[0026] Figure 3 yes Figure 2 A top view of the anchoring device shown;

[0027] Figure 4 This is a schematic diagram of the anchoring device according to another embodiment;

[0028] Figure 5 yes Figure 4 A top view of the anchoring device shown;

[0029] Figure 6 yes Figure 4 The diagram shows the structure of the connecting ring of the anchoring device.

[0030] Figure 7 yes Figure 4 A schematic diagram of the tie rod of the anchoring device is shown.

[0031] Figure 8 This is a schematic diagram of the anchoring system of this embodiment.

[0032] The annotations in the attached figures are explained as follows:

[0033] 10. Anchoring device; 20. Floating structure; 11. Fixing ring; 111. Reinforcing part; 112. Ring part; 113. Large end; 114. Small end; 12. Connecting ring; 121. Connecting arm; 122. Bending part; 13. Tie rod; 131. Body; 132. First connecting part; 133. Second connecting part; 134. First rotating shaft; 135. Second rotating shaft; 136. First shaft hole; 137. Second shaft hole; 138. Connecting lug; 14. Connecting piece; 21. Mooring line; 22. Drive device; 23. Release sling; 24. Swing. Detailed Implementation

[0034] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0035] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back) are merely for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0036] This embodiment provides a mooring system and mooring device for a floating structure. The floating structure can be a small offshore platform, a small floating platform, or a vessel, etc. Traditional mooring devices for small floating structures typically employ an anchor eye plate and a guide hole. Because the guide hole needs to be designed and manufactured according to the rated load of the mooring cable, and is usually made of cast iron or cast steel, this type of mooring device has a long development cycle and high cost. Furthermore, reinforcement is required under both the anchor eye plate and the guide hole, further increasing cost and weight.

[0037] Alternatively, mooring devices for other small floating structures can be achieved by installing box-shaped anchoring structures on the floating structure. These box-shaped anchoring structures can withstand both horizontal and vertical rotation. However, the connection method of these box-shaped anchoring structures is relatively complex, requires customization by specialized manufacturers, and has a long production cycle, high cost, and limited load-bearing capacity.

[0038] Please see Figure 1 Specifically, in this embodiment, the floating structure 20 can be a four-post semi-submersible platform with eight mooring points. The breaking strength of the mooring cables is 500 tons, requiring the anchoring devices 10 of the floating structure to meet a safe load of 500 tons. Furthermore, multiple anchoring devices 10 can be provided, each located on a different side of the floating structure 20.

[0039] Please see Figure 1 and Figure 2 The mooring device 10 for the floating structure in this embodiment includes a fixing ring 11, a connecting ring 12, and two tie rods 13.

[0040] The fixing ring 11 includes two reinforcing parts 111 and an annular part 112 connecting the two reinforcing parts 111. The two reinforcing parts 111 are used for fixed connection with the floating structure. The annular part 112 of the fixing ring 11 is fixedly installed on the side of the floating structure via the reinforcing parts 111.

[0041] The reinforcing section 111 has a large end 113 and a small end 114, with the small end 114 connected to the annular section 112. The large end 113 is used for fixed connection with the floating structure. The large end 113 is welded to the floating structure. The cross-sectional area of ​​the reinforcing section 111 gradually increases from the small end 114 to the large end 113. The reinforcing section 111 can enhance the connection strength of the fixing ring 11, ensuring that the fixing ring 11 has sufficient strength to withstand the pressure of the mooring cable 21.

[0042] The annular portion 112 is made of steel with a diameter of 400 mm, a thickness of 500 mm, and a yield strength of 355 MPa, which meets the strength requirements of the annular portion 112. Finite element analysis shows a maximum stress of 227 MPa and a safety factor of 1.56, which meets the requirement of a safety factor of not less than 1.11 as specified in classification society regulations.

[0043] Please see Figure 3 The connecting ring 12 is movably fitted onto the fixed ring 11. The connecting ring 12 includes two connecting arms 121 and a bent portion 122 connecting the two connecting arms 121. The width of the connecting arms 121 is greater than the width of the bent portion 122. The connecting arms 121 are used to connect with the pull rod 13, and the widened connecting arms 121 enhance strength.

[0044] The bent portion 122 is rotatable along the annular portion 112. The direction of rotation can include rotation along the extending direction of the annular portion 112 or rotation along the outer periphery of the annular portion 112. Therefore, the connecting ring 12 can rotate arbitrarily in both the horizontal and vertical planes along the annular portion 112 of the fixed ring 11. The connection method between the connecting ring 12 and the fixed ring 11 can satisfy the requirements for the range and combination of angle changes in both the horizontal and vertical planes.

[0045] The smaller width of the bent portion 122 reduces the friction between the bent portion 122 and the annular portion 112, facilitating relative rotation between the connecting ring 12 and the fixed ring 11.

[0046] Specifically, in this embodiment, the plane containing the annular portion 112 of the fixing ring 11 is parallel to the horizontal plane, meaning the fixing ring 11 protrudes laterally from the side of the ship's hull. The connecting ring 12 is arranged to wrap around the vertical plane. Therefore, the bent portion 122 of the connecting ring 12 can rotate in both the horizontal and vertical planes by relying on the annular portion 112 of the fixing ring 11.

[0047] Furthermore, both the annular portion 112 and the bent portion 122 can be arc-shaped. The interlocking annular portion 112 and bent portion 122 can rotate along a smooth arc surface, allowing for freer relative sliding between the annular portion 112 and the bent portion 122 and avoiding interference.

[0048] The cross-sections of the annular portion 112 and the bent portion 122 are circular. Therefore, the outer peripheral surfaces of the annular portion 112 and the bent portion 122 are arc-shaped, which facilitates relative rotation between them. Furthermore, the diameter of the bent portion 122 is smaller than the diameter of the annular portion 112. The annular portion 112 has higher strength to increase the connection strength of the fixing ring 11.

[0049] There can be two tie rods 13. Each tie rod 13 is connected to one of two connecting arms 121. Furthermore, the width of the connecting arm 121 is greater than the width of the bent portion 122. The increased strength of the connecting arm 121 improves the connection strength between the connecting arm 121 and the tie rod 13, thereby increasing the load-bearing capacity of the connecting arm 121.

[0050] One end of the pull rod 13 is rotatably connected to the connecting arm 121, and the other end of the two pull rods 13 is rotatably connected and used to connect to the mooring cable 21.

[0051] Specifically, in this embodiment, the pull rod 13 includes a body 131 and a first connecting portion 132 and a second connecting portion 133 located at both ends of the body 131. The body 131 is inclined relative to the first connecting portion 132 or the second connecting portion 133, and the body 131 is inclined toward the center line of the annular portion 112 of the fixing ring 11, so that the second connecting portions 133 of the two pull rods 13 are close to each other. Since the distance between the two first connecting portions 132 is large and the distance between the two second connecting portions 133 of the two pull rods 13 is small, the inclined arrangement of the body 131 can make the two second connecting portions 133 as close as possible, thereby facilitating a rotatable connection.

[0052] The first connecting portion 132 has a first shaft hole 136 for a first rotating shaft 134 to pass through, and the second connecting portion 133 has a second shaft hole 137 for a second rotating shaft 135 to pass through. The first rotating shaft 134 is detachably connected between the first connecting portion 132 and the connecting arm 121. The first connecting portion 132 includes two oppositely arranged connecting ears 138. The planes of the two connecting ears 138 are parallel to the plane of the connecting arm 121. The connecting arm 121 is embedded between the two connecting ears 138, and the first rotating shaft 134 is rotatably connected through the two connecting ears 138 and the connecting arm 121.

[0053] A second rotating shaft 135 is detachably inserted between the second connecting portions 133 of the two tie rods 13. The circumferential direction of the first shaft hole 136 and the axial direction of the second shaft hole 137 can be the same or perpendicular to each other. That is, the axial directions of the first rotating shaft 134 and the second rotating shaft 135 can be parallel or perpendicular to each other.

[0054] The floating structure also includes a connector 14 for connecting the mooring cable 21, the connector 14 being rotatably connected to a second pivot 135 between the two second connecting portions 133. The connector 14 may be annular. The mooring cable 21 can be connected to the anchoring device 10 through the connector 14, and the mooring cable 21 can rotate about the second pivot 135.

[0055] Furthermore, the two second connecting parts 133 are parallel to each other, and the connector 14 is located between the two second connecting parts 133 to avoid mutual interference when the connector 14 rotates between the two connecting parts 132 / 133.

[0056] It is understandable that connector 14 can also be omitted, in which case the mooring cable 21 can be directly and rotatably connected to the second shaft 135.

[0057] Specifically, in this embodiment, the first pivot 134 extends vertically, and the first pivot 134 and the second pivot 135 are parallel to each other. When the tie rod 13 rotates around the first pivot 134, the mooring cable 21 can move laterally via the tie rod 13 around the first pivot 134. When the connecting member 14 rotates around the second pivot 135, the mooring cable 21 can move vertically via the connecting member 14 around the second pivot 135.

[0058] Please see Figure 4 , Figure 5 In other embodiments, the anchoring device 10 may also have other structural forms. The axial direction of the first shaft hole 136 may also extend laterally. See also... Figure 6 The bent portion 122 and the connecting arm 121 of the connecting ring 12 can be located on the same plane. The connecting ring 12 extends vertically, and the plane on which the connecting ring 12 is located is perpendicular to the outer surface of the fixing ring 11. The bent portion 122 is arc-shaped, and its inner arc surface contacts the annular portion 112 of the fixing ring 11.

[0059] Please see Figure 4 and Figure 7 The first connecting part 132 extends vertically, and the plane containing the two connecting ears 138 of the first connecting part 132 is also perpendicular to the outer surface of the fixing ring 11. Then the pull rod 13 rotates around the first rotating shaft 134 inside the first shaft hole 136, and the mooring cable 21 can move vertically through the pull rod 13 around the first rotating shaft 134.

[0060] Furthermore, the axial direction of the second shaft hole 137 can also extend vertically. Then the planes containing the first connecting portion 132 and the second connecting portion 133 are perpendicular to each other. The second connecting portion 133 extends laterally. Then the second rotating shaft 135 can extend vertically. The connecting member 14 rotates around the second rotating shaft 135, and the mooring cable 21 can move laterally through the connecting member 14 around the second rotating shaft 135.

[0061] Please see Figure 8 The present embodiment provides a mooring system for a floating structure, which includes the aforementioned mooring device 10, mooring cable 21, drive device 22, and release sling 23.

[0062] One end of the mooring cable 21 is fixedly connected to the anchoring device 10. The other end of the mooring cable 21 is connected to the anchor body to restrain the floating structure. The mooring cable 21 can be a 70mm diameter anchor chain with stops. The initial preload of the mooring cable 21 can reach 10-15 tons.

[0063] The drive unit 22 is mounted on the floating structure. The drive unit 22 can be a hand-operated hoist, electric hoist, winch, or other fixed device mounted on the floating structure platform. Alternatively, it can be a tugboat, maintenance vessel, etc., which does not need to be mounted on the platform but only needs to be connected via the release sling 23. Specifically, the drive unit 22 can be a 15-ton hand-operated hoist. For ease of operation, a 15-ton eyeplate is installed on the platform, the hand-operated hoist is installed and hung on the eyeplate, and a swivel ring 24 is installed on the platform's hull, connected to the release sling 23.

[0064] One end of the release sling 23 is connected to the drive device 22, and the other end is connected to the mooring line 21. The drive device 22 raises and lowers the release sling 23, thereby raising and lowering the mooring line 21. The release sling 23 can be a 30mm diameter steel wire rope or a 96mm diameter polyethylene rope.

[0065] The following explanation will focus on the installation and removal of mooring cable 21 in conjunction with the floating structure mooring system:

[0066] When installing mooring cable 21 on a floating structure, first pass the connecting ring 12 through the fixing ring 11. Then insert the first connecting part 132 of the tie rod 13 into the connecting arm 121 and connect and fix it through the first rotating shaft 134. Rotate the mooring cable 21 to the second rotating shaft 135 through the connector 14 to complete the installation of the mooring cable 21 and the connector 14. During the actual installation, since the mooring cable 21 is relatively heavy, a drive device 22 is required for assistance. Place the mooring cable 21 on a platform or ship to distribute the weight of the mooring cable 21, and only retain a small section of the mooring cable 21 for the installation operation. After the installation is completed, fully release the mooring cable 21.

[0067] When it is necessary to remove the mooring cable 21 from the floating structure, the release sling 23 is lifted upwards by the drive device 22, causing the release sling 23 to tighten. This releases the preload of the mooring cable 21 or the release sling 23, transferring the tension and most of the weight of the mooring cable 21 to the drive device 22. Then, either the first pivot 134 or the second pivot 135 can be removed to complete the release of the mooring cable 21. The operation is convenient and simple.

[0068] Therefore, the mooring device 10 and its mooring system of the aforementioned floating structure, through the structure of the fixed ring 11, connecting ring 12, and tie rod 13, can achieve arbitrary rotation in both the horizontal and vertical planes, meeting the requirements for the angle variation range and combination of the mooring cable 21. The aforementioned mooring device 10 and its mooring system of the floating structure are applicable to various platforms, have a wide range of applications, and strong load-bearing capacity. Furthermore, the floating structure mooring system is easy to manufacture and has low cost, which helps to reduce the overall construction cost and construction period of the floating structure. The above embodiments are merely illustrative examples of the structure; the structures in each embodiment are not fixed combinations. Where there is no structural conflict, the structures in multiple embodiments can be arbitrarily combined and used.

[0069] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. An anchoring device for a floating structure, characterized in that include: The fixing ring includes two reinforcing parts and an annular part connecting the two reinforcing parts, the two reinforcing parts being used for fixed connection with the floating structure; A connecting ring is movably fitted onto the fixed ring. The connecting ring includes two connecting arms and a bent portion connecting the two connecting arms. The bent portion is rotatable along the annular portion. and Multiple tie rods, one end of which is rotatably connected to the connecting arm; the other ends of two tie rods are rotatably connected and used to connect to the mooring cable.

2. The anchoring device for a floating structure according to claim 1, characterized in that, The annular portion and the bent portion are arc-shaped.

3. The mooring device of a floating structure according to claim 1, wherein The cross-sections of the annular portion and the bent portion are circular.

4. The mooring device of a floating structure according to claim 1, wherein The reinforcing part has a large end and a small end. The small end is connected to the annular part, and the large end is used to be fixedly connected to the floating structure. The cross-sectional area of ​​the reinforcing part gradually increases from the small end to the large end.

5. The mooring device of a floating structure according to claim 1, wherein The width of the connecting arm is greater than the width of the bent portion.

6. The mooring device of a floating structure according to claim 1, wherein The pull rod includes a body and a first connecting part and a second connecting part located at both ends of the body. The first connecting part is set at an angle to the body. The body is inclined toward the center line of the annular part of the fixing ring, so that the second connecting parts of the two pull rods are close to each other.

7. The mooring device of a floating structure according to claim 6, wherein A first rotating shaft is detachably provided between the first connecting part and the connecting arm. The first connecting part includes two oppositely arranged connecting ears, and the connecting arm is embedded between the two connecting ears. The first rotating shaft can rotatably pass through the two connecting ears and the connecting arm.

8. The mooring device of a floating structure according to claim 7, characterized in that A second pivot is detachably provided between the second connecting parts of the two pull rods, and the axes of the first pivot and the second pivot are parallel or perpendicular to each other.

9. The mooring device of a floating structure according to claim 8, characterized in that It also includes a connector for connecting the mooring cable, the connector being rotatably connected to a second shaft between the two second connecting parts.

10. An anchoring system for a floating structure, characterized in that include: The mooring device as described in any one of claims 1-9; The mooring cable is fixedly connected to the anchoring device; A drive unit is mounted on the floating structure; The release rigging has one end connected to the drive device and the other end connected to the mooring line. The drive device raises and lowers the release rigging to retract or extend the mooring line.

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