Mooring device for ocean floating objects

Abstract

The utility model relates to the technical field of mooring of marine floaters, and discloses a mooring device for marine floaters, which comprises a frame structure, floaters, mooring cables, anchor blocks and floating balls used for increasing buoyancy and moving resistance, the floating balls are serially connected onto the mooring cables and positioned on sections of the mooring cables sinking into seawater, and the frame structure is used for stabilizing and protecting the marine floaters. The ocean floater is located on the inner side of the frame structure, one end of the mooring rope is connected with the floater, the other end of the mooring rope is connected with the anchor block, and the outer end of the frame structure is connected with the floater. According to the scheme, the impact force of waves is preliminarily dispersed and buffered through the frame structure, and the stability of internal ocean floating objects is guaranteed; the stress of the mooring rope is dispersed through the floating ball, the floating ball moves in seawater to dissipate energy, the concentrated load at the anchoring point of the mooring rope and the floater is reduced, displacement or failure of the mooring rope due to instantaneous overload is avoided, and the long-term anchoring reliability of the whole structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of marine floating object mooring technology, specifically to a mooring device for marine floating objects. Background Technology

[0002] my country boasts abundant marine resources, and with continuous economic development, an increasing number of floating structure projects are underway, such as offshore floating platforms. Offshore floating platforms are structures that can float on the sea surface, providing support and operational space, and can be used for oil and gas extraction, marine observation and monitoring, and aquaculture. Unlike fixed land structures, floating structures must overcome the various dynamic factors posed by the marine environment. When subjected to wave forces and currents, offshore floating platforms experience irregular movements of six degrees of freedom: swaying, rolling, heeling, pitching, and yawing. This can cause the platform to shift position, moving away from its intended operational area, increasing the difficulty and cost of repositioning and adjustment. Utility Model Content

[0003] The present invention aims to provide a mooring device for marine floating objects, in order to solve the problem that marine floating objects are prone to displacement and have poor positioning stability under the action of waves and water currents.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a mooring device for marine floating objects, wherein at least two sets of mooring devices are arranged along the circumference of the floating object. The mooring device includes a frame structure, floats, mooring cables, anchor blocks, and buoys for improving buoyancy and reducing movement resistance. The buoys are connected in series to the mooring cables and are located on the section of the mooring cables submerged in seawater. The frame structure is used to stabilize and protect the marine floating objects, which are located inside the frame structure. One end of the mooring cable is connected to the floats, and the other end of the mooring cable is connected to the anchor blocks. The outer end of the frame structure is connected to the floats, and at least one float is provided.

[0005] The principle of this scheme is as follows: Anchor blocks, mooring cables, floats, buoys, and a frame structure are connected to form a mooring device. At least two sets of mooring devices are evenly distributed around the floating object. Specifically, the floating object and the frame structure are connected, and the mooring cable is fixed to the corresponding fixed object (seabed, mooring pile) via anchor blocks. When wave loads strike, the frame structure first contacts the wave, initially dispersing and buffering the impact force, reducing the load intensity subsequently transmitted to the internal structure, and ensuring the stability of the internal floating object. Furthermore, the buoys disperse the force on the mooring cable, dissipating energy step by step, reducing the concentrated load at the anchoring point between the mooring cable and the float, preventing the anchor block from shifting or failing due to instantaneous overload, and improving the overall structure's long-term mooring reliability in the marine environment.

[0006] The advantages of this scheme are: the frame structure initially disperses and buffers the impact of waves, ensuring the stability of the internal marine floating objects; the buoys disperse the force on the mooring cable, and the movement of the buoys in the sea dissipates energy, reducing the concentrated load at the anchoring point of the mooring cable and the buoy, preventing the mooring cable from shifting or failing due to instantaneous overload, and improving the long-term anchoring reliability of the overall structure; the buoys keep the mooring cable at a certain pretension, effectively preventing large horizontal displacement of the marine floating object structure due to the slack of the mooring cable.

[0007] Preferably, the frame structure includes buoys and connecting cables. The buoys are positioned on the outer side of the marine floating object, and one end of the connecting cable passes through the buoy and connects to a corresponding float. The outer buoys provide a certain degree of protection, serving as the first line of defense against wave loads. When waves arrive, the outer buoys are the first to contact them, and through their structural characteristics and reasonable shape design, they initially disperse and buffer the impact force of the waves, reducing the load intensity subsequently transmitted to the internal structure, and providing a reliable protective barrier for the internal marine floating object structural components.

[0008] Preferably, the connecting cable passing through each of the individual floats is connected to the same float. Connecting the floats to the same float via the connecting cable ensures more even stress distribution across different directions and positions, reducing stress concentration, minimizing localized fatigue damage, and extending service life. It also creates multi-point support, reducing swaying and displacement, and maintaining the overall structural stability.

[0009] Preferably, the connecting cables passing through each of the individual buoys are evenly distributed on the corresponding buoys. This even distribution ensures that wave forces, water flow impact forces, etc., are uniformly transmitted to the circumferential or axial direction of the buoy, preventing localized stress concentration that could lead to material fatigue or deformation, and extending the service life of the buoy.

[0010] Preferably, the buoy is composed of three identical circular plates orthogonally interlocked in pairs, with a circular sphere embedded at the core. This design ensures that the buoy experiences significant water resistance when moving in any direction, thereby dissipating the stress on the mooring cable; furthermore, the circular sphere at the core enhances the buoy's structural strength and provides buoyancy.

[0011] Preferably, the sphere has a through hole for connecting the mooring cable, and the diameter of the through hole matches the diameter of the mooring cable.

[0012] Preferably, the inner wall of the through hole has a protrusion perpendicular to the direction of the through hole. The protrusion increases the static friction between the rope and the rope by embedding itself in the rope surface, preventing the buoy from sliding on the mooring cable.

[0013] Preferably, the through hole has a bent section at the center of the sphere. The bent channel increases the contact points between the mooring cable and the interior of the sphere, increasing friction and preventing the buoy from sliding freely on the mooring cable. When subjected to external forces such as loads, the bent path can absorb impact energy, reducing the transmission efficiency of vibration or impact; it also disperses external loads, reduces local stress concentration, and thus improves the overall structural durability.

[0014] Preferably, the mooring cable has multiple buoys along its length, with the spacing between the buoys gradually increasing in the depth direction. The distributed buoys will be subject to water resistance, and through the tiered kinetic energy dissipation mechanism of the multiple buoys, the impact energy transmitted from waves to the surface structure is significantly reduced. The gradually increasing spacing between the buoys in the depth direction helps to more effectively utilize the resistance provided by the buoys, because buoys at shallower depths are more easily moved by the mooring cable; therefore, a denser arrangement of buoys helps to provide more effective resistance.

[0015] Preferably, the mooring cable is provided with a branch anchor cable at the connection end with the anchor block, and the branch anchor cable is connected to the anchor block. The branch anchor cable is used for auxiliary anchoring to ensure the overall structural anchoring stability. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0017] Figure 2 This is a schematic diagram of the structure when the mooring device and the marine floating object are connected according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the structure of the float in an embodiment of this utility model. Detailed Implementation

[0019] The following detailed description illustrates the specific implementation method:

[0020] The reference numerals in the accompanying drawings include: buoy 1, connecting cable 2, float 3, mooring cable 4, buoy 5, and through hole 51.

[0021] Example:

[0022] A mooring device for marine floating objects, such as Figure 1 and Figure 3 As shown, it includes: frame structure, float 3, mooring cable 4, anchor block and buoy 5.

[0023] The frame structure is used to connect the marine floating structure, which is located inside the frame structure. The outer end of the frame structure is connected to float 3, and there is at least one float 3. Figure 1As shown, in this embodiment, two floats 3 are provided at the outer end of the frame structure. The frame structure includes a buoy 1 and a connecting cable 2. The buoy 1 is located on the outside of the marine floating object, and one end of the connecting cable 2 passes through the buoy 1 and connects to the corresponding buoy 3. When wave loads strike, the frame structure first contacts the wave, initially dispersing and buffering the impact force of the wave, reducing the load intensity subsequently transmitted to the internal structure, and ensuring the stability of the internal marine floating object. In this scheme, the buoy 1 is cylindrical and designed to float around the ocean. The outer buoy 1 serves as the first line of defense against wave intrusion. When waves strike, the outer buoy 1 contacts the wave first. Utilizing its own floating structure characteristics and streamlined surface design, the buoy 1 initially disperses and buffers the impact force of the wave, reducing the load intensity subsequently transmitted to the internal structure, and providing a reliable protective barrier for the internal marine floating object structural components. The connecting cable is a flexible rope.

[0024] The buoy 1 has holes in the radial direction. The connecting cable 2 passes through the corresponding holes on the buoy 1 and connects to the corresponding float 3. The float 3 keeps the mooring cable 4 under a certain pretension, which effectively prevents the marine floating structure from undergoing large horizontal displacement due to the slack of the mooring cable 4.

[0025] A connecting cable 2 passes through a single pontoon 1 and connects it to the same float 3. This connection via the connecting cable 2 and the same float 3 ensures more even stress distribution across different directions and positions of the pontoon 1, reducing stress concentration, minimizing localized fatigue damage, and extending its service life. It also creates multi-point support, reducing swaying and displacement, and maintaining the overall structural stability. This design uses a connecting cable 2 passing through the pontoon 1, a simple connection method that reduces construction difficulty and workload, and improves construction efficiency.

[0026] The connecting cables 2, passing through individual pontoons 1, are evenly distributed on the corresponding pontoons 1. This even distribution can uniformly transmit wave forces, water flow impact forces, etc., to the circumferential or axial direction of the pontoons 1, avoiding localized stress concentration that could lead to material fatigue or deformation, and extending the service life of the pontoons 1.

[0027] One end of the mooring cable 4 is connected to the float 3, and the other end is connected to the anchor block. The anchor block secures the mooring cable 4 to the corresponding fixed object (seabed, mooring pile), ensuring that the floating object is fixed in the appropriate position and preventing it from shifting due to waves or wind. Anchoring devices can be installed at the connection end of the mooring cable 4 to the seabed, depending on the seabed conditions. For soft seabeds, a suction anchor can be used, where a hydraulic drive system vertically presses the anchor body into the seabed sediment layer, utilizing the principle of negative pressure adsorption for rapid installation. For hard seabeds, a concrete gravity anchor with an anti-erosion structure can be configured. If necessary, each mooring cable 4 can be branched at the end to connect 2-3 auxiliary anchor points to form a redundant layout. In this scheme, the connection end between the mooring cable 4 and the anchor block is equipped with a branch anchor cable, which is connected to the anchor block. The branch anchor cable is used for auxiliary anchoring to ensure the overall structural anchoring stability. The anchor chain connection is equipped with a universal swivel and tension adjustment device, which enables the system to automatically adjust the pretension according to tidal changes and wave impact, ensuring stable gripping force under complex seabed conditions such as silt, sand, and rock.

[0028] Buoy 5 is installed on mooring cable 4, located on the section of mooring cable 4 submerged in seawater. Buoy 5 is used to increase buoyancy and reduce drag. Because mooring cable 4 is relatively long, when not in use, the connection between mooring cable 4 and float 3 is always under tension due to its own weight. Buoy 5 is used to distribute the stress on mooring cable 4, dissipating energy step by step, reducing the concentrated load at the anchoring point of mooring cable 4 and float 3, preventing the anchor block from shifting or failing due to instantaneous overload, and improving the overall structure's long-term anchoring reliability in the marine environment.

[0029] Multiple buoys 5 are installed along the length of the mooring cable 4. These distributed buoys 5 are subject to water resistance; through a tiered kinetic energy dissipation mechanism, the impact energy of waves transmitted to the surface structures is significantly reduced. The spacing between the buoys 5 gradually increases along the depth direction, as shown below. Figure 1 As shown, the spacing of the buoys 5 gradually increases in the depth direction, which helps to make more effective use of the drag provided by the buoys 5. Because the buoys 5 at shallower depths are more easily driven by the mooring line 4, the denser buoys 5 help to provide more effective drag.

[0030] The buoy 5 is composed of three identical circular plates orthogonally fitted together in pairs, with a circular sphere embedded in the core position. This shape design ensures that the buoy 5 experiences greater water resistance when moving in any direction, thereby dissipating the force on the mooring cable 4; and the circular sphere design in the core position can improve the structural strength of the buoy 5 and provide a certain amount of buoyancy.

[0031] A circular sphere has a through hole 51 for connecting the mooring cable 4. The diameter of the through hole 51 matches the diameter of the mooring cable 4; in this embodiment, the diameter of the mooring cable 4 is slightly smaller than the diameter of the through hole 51. The energy-consuming float 58 is divided into two symmetrical parts along the through hole 51, and these two parts are locked together with nuts. A protrusion perpendicular to the direction of the through hole 51 is provided on the inner wall of the through hole 51. The protrusion increases the static friction between the two by embedding itself into the surface of the rope, preventing the float 58 from sliding on the mooring cable 4. The protrusion disperses the concentrated pressure between the mooring cable 4 and the through hole 51 to multiple contact points, reducing local wear and extending the service life of the sphere and the rope.

[0032] The through hole 51 is located at the center of the sphere and has a bent section. The bent channel can increase the contact points between the mooring cable 4 and the inside of the sphere, increase friction, and prevent the float 5 from sliding freely on the mooring cable 4; when subjected to external forces such as loads, the bent path can absorb impact energy, reduce the transmission efficiency of vibration or impact; disperse external loads, reduce local stress concentration, and thus improve the overall structural durability.

[0033] The specific implementation process is as follows: Connect the marine floating object and the buoy 1. Fix one end of the connecting cable 2 to the buoy 1 or the marine floating object. Pass the other end of the connecting cable 2 through the hole at the corresponding position on the buoy 1 and connect it to the corresponding buoy 3. Connect one end of the mooring cable 4 to the buoy 3 and the other end of the mooring cable 4 to the anchor block. Fix the anchor block to the seabed or mooring pile, forming a mooring device composed of the anchor block, mooring cable 4, buoy 3, float 5, and frame structure. At least two sets of mooring devices are set up and evenly distributed around the marine floating object. The specific connection status is shown in the attached figure. Figure 2 As shown, buoy 1, float 3, and mooring cable 4 rise and fall with the wind and waves. Buoy 1 contacts the waves, initially dispersing and buffering the impact force of the waves, reducing the load intensity subsequently transmitted to the internal structure, and ensuring the stability of the internal marine floating objects. When the buoy 5 moves in the seawater, it is subject to the resistance of the water body. Through the step-by-step kinetic energy dissipation mechanism of multiple buoys 5, the impact energy transmitted by the waves to the surface structure is significantly weakened. The buoy 5 disperses the force on the mooring cable 4, reducing the concentrated load at the anchoring point of the mooring cable 4 and float 3, preventing the anchor block from shifting or failing due to instantaneous overload, and improving the long-term anchoring reliability of the overall structure in the marine environment.

[0034] This design uses float 3 to maintain a certain pretension on the mooring cable 4, effectively preventing large horizontal displacement of the marine floating structure due to slack in the mooring cable 4; float 1 disperses and buffers the impact of waves, protecting the marine floating objects inside and preventing large displacement, thus ensuring the stability of the marine floating objects inside; float 5 disperses the force on the mooring cable 4, and the movement of float 5 in the seawater dissipates energy, reducing the concentrated load at the anchoring point of the mooring cable 4 and float 3, preventing the mooring cable 4 from displacing or failing due to instantaneous overload, and improving the long-term anchoring reliability of the overall structure.

[0035] The above are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A mooring device for marine floating objects, characterized in that, The mooring device comprises at least two sets arranged circumferentially along the floating object. The mooring device includes a frame structure, a float, a mooring cable, an anchor block, and a buoy for increasing buoyancy and reducing drag. The buoy is connected in series with the mooring cable and is located on the section of the mooring cable submerged in seawater. The frame structure is used to stabilize and protect the marine floating object, which is located inside the frame structure. One end of the mooring cable is connected to the float, and the other end of the mooring cable is connected to the anchor block. The outer end of the frame structure is connected to the float, and there is at least one float.

2. A mooring device for marine floating objects according to claim 1, characterized in that: The frame structure includes a buoy and a connecting cable. The buoy is positioned on the outside of the marine floating object, and one end of the connecting cable passes through the buoy and connects to a corresponding float.

3. A mooring device for marine floating objects according to claim 2, characterized in that: The connecting cable passing through each of the individual floats is connected to the same float.

4. A mooring device for marine floating objects according to claim 2, characterized in that: The connecting cables passing through each of the individual buoys are evenly distributed on the corresponding buoys.

5. A mooring device for marine floating objects according to claim 1, characterized in that: The buoy is composed of three identical circular plates that are orthogonally fitted together in pairs, with a circular sphere embedded in the core position.

6. A mooring device for marine floating objects according to claim 5, characterized in that: The sphere has a through hole for connecting the mooring cable, and the diameter of the through hole matches the diameter of the mooring cable.

7. A mooring device for marine floating objects according to claim 6, characterized in that: The inner wall of the through hole is provided with a protrusion perpendicular to the direction of the through hole.

8. A mooring device for marine floating objects according to claim 6, characterized in that: The through hole is located at the center of the sphere and has a bent section.

9. A mooring device for marine floating objects according to claim 1, characterized in that: The mooring cable has multiple buoys along its length, and the spacing between the buoys gradually increases along the depth direction.

10. A mooring device for marine floating objects according to claim 1, characterized in that: The mooring cable is connected to the anchor block by a branch anchor cable, and the branch anchor cable is connected to the anchor block.

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