CN-121973887-A - Single point mooring device

CN121973887ACN 121973887 ACN121973887 ACN 121973887ACN-121973887-A

Abstract

The invention provides a single-point mooring device, which relates to the technical field of ocean engineering equipment and comprises a rotating assembly, wherein the rotating assembly comprises an outer tower, an inner tower and a slewing bearing, the side wall of the outer tower is used for being installed at the bow part of a platform, the outer tower is connected with the inner tower through the slewing bearing, the slewing bearing is provided with the slewing assembly so that the outer tower and the inner tower can relatively rotate, the inner tower is provided with a plurality of chain stoppers, and the chain stoppers are connected with a mooring anchor chain through chain guide wheels, wherein when the mooring anchor chain is fixed on a seabed, under the action of sea wind, sea waves and sea water, the platform can rotate around the inner tower for 360 degrees. The invention can improve the balance while avoiding the problem of rotation winding friction, and can also ensure the running stability of the device.

Inventors

SHENG SONGWEI
JIANG JIAQIANG
WANG KUNLIN

Assignees

中国科学院广州能源研究所

Dates

Publication Date: 20260505
Application Date: 20260214

Claims (10)

1. A single point mooring comprising: The rotating assembly comprises an outer tower, an inner tower and a rolling bearing, wherein the side wall of the outer tower is used for being installed at the bow part of a platform, the outer tower is connected with the inner tower through a slewing bearing, the slewing bearing is provided with the slewing assembly so that the outer tower and the inner tower can relatively rotate, the platform at the lower end of the inner tower is provided with a plurality of chain stoppers and universal joints, the chain stoppers are connected with mooring anchor chains through guide chain wheels, and the universal joints are connected with the corresponding mooring anchor chains through shackles; when the mooring anchor chain is fixed on the seabed, under the action of sea wind, sea waves and sea water, the platform can rotate 360 degrees around the inner tower.
2. The single point mooring device of claim 1, wherein the mooring chains consist of three groups of mooring chains, the three groups of mooring chains are spaced 120 ° apart, an anchor head is arranged at one end of each group of mooring chains away from the chain stopper or the universal joint, a suction barrel is arranged at the anchor head, each group of mooring chains consists of three mooring chains, the space between two mooring chains is 5 °, and a plurality of balancing weights are arranged on each mooring chain.
3. The single point mooring device of claim 2, further comprising a lifting apparatus and a plurality of guide wheels, wherein the lifting apparatus is disposed on the platform, an output end of the lifting apparatus is connected with a steel cable, and the steel cable sequentially passes through the plurality of guide wheels and can be respectively connected with two groups of mooring chains of the chain stopper.
4. The single point mooring of claim 1 wherein the swivel assembly comprises a swivel support having a swivel support connected thereto, the swivel support being connected to the inner tower.
5. The single point mooring of claim 2 wherein said universal joint is adapted to rotationally adjust a set of said mooring chains.
6. The single point mooring device of claim 1 wherein the top of the outer tower is further provided with a cover having mounting holes for mounting the rolling bearings, and wherein the inner race of the rolling bearings is coaxially engaged with the upper end of the inner tower.
7. The single point mooring device of claim 6 wherein an electrical slip ring is provided on the cover and an inner rotor of the electrical slip ring is connected to the inner tower and an outer rotor of the electrical slip ring is connected to the cover by its outer shell.
8. A single point mooring as defined in claim 3, further comprising a pump station disposed on the platform for driving the lifting apparatus.
9. The single point mooring device of claim 1 wherein the upper tower end of the inner tower is a conical structure and the lower tower end of the inner tower is an inverted T-shaped platform.
10. The single point mooring of claim 1 wherein the tower interior of the outer tower is a circular structure and the tower exterior structure of the outer tower is aligned with the bow of the platform.

Description

Single point mooring device Technical Field The invention relates to the technical field of ocean engineering equipment, in particular to a single point mooring device. Background Single point mooring refers to a mooring mode for large vessels or platforms. The ship or the platform is connected with the single mooring point by the mooring rope or the anchor chain, and can freely rotate around the single mooring point along with the change of wind waves, water flows and the like, so that the ship or the platform is continuously positioned at the favorable position with the minimum combined resistance of wind, waves and currents. The single point mooring consists of a pontoon, a catenary, a bottom chain and an anchor, and all the parts are connected into a whole by shackles. Currently, catenary systems are composed of cables or wire ropes, and anchor chains, which typically need to extend hundreds or even thousands of meters, depending on the depth and mooring. The upper part adopts a cable or a steel rope, and the lower part is generally connected by adopting a mooring chain due to friction with the seabed, but the weight of the mooring chain is rapidly increased along with the extension of a mooring line, and the diameter of a pontoon is further increased to increase the buoyancy for resisting the dead weight of the mooring chain. However, when the extended anchor chain rotates around a single mooring point, the extended anchor chain is wound under the influence of the seabed topography and can rub against the seabed to damage organisms, and meanwhile, the overall stability and balance are poor due to the large change of sea surface environment. Disclosure of Invention Aiming at the problems of the prior art, such as the defect of single point mooring, poor stability and poor balance, the invention provides the single point mooring device, which can avoid the problem of rotation winding friction, improve the balance and ensure the running stability of the device. In order to achieve the above purpose, the present invention provides the following technical solutions: A single point mooring comprising: The rotating assembly comprises an outer tower, an inner tower and a rolling bearing, wherein the side wall of the outer tower is used for being installed at the bow part of a platform, the outer tower is connected with the inner tower through a slewing bearing, the slewing bearing is provided with the slewing assembly so that the outer tower and the inner tower can relatively rotate, the platform at the lower end of the inner tower is provided with a plurality of chain stoppers and universal joints, the chain stoppers are connected with mooring anchor chains through guide chain wheels, and the universal joints are connected with the corresponding mooring anchor chains through shackles; when the mooring anchor chain is fixed on the seabed, under the action of sea wind, sea waves and sea water, the platform can rotate 360 degrees around the inner tower. The single point mooring device comprises a plurality of mooring chains, wherein each mooring chain comprises three groups of mooring chains, the space between the three groups of mooring chains is 120 degrees, one end, away from the chain stopper or the universal joint, of each mooring chain is provided with an anchor head, a suction barrel is arranged at the anchor head, each mooring chain comprises three mooring chains, the space between the two mooring chains is 5 degrees, and each mooring chain is provided with a plurality of balancing weights. The single-point mooring device further comprises lifting equipment and a plurality of guide wheels, wherein the lifting equipment is arranged on the platform, the output end of the lifting equipment is connected with a steel wire cable, and the steel wire cable sequentially passes through the guide wheels and can be respectively connected with the two groups of mooring chains in butt joint with the chain stopper. The single point mooring device as described above, further wherein the swivel assembly comprises a swivel support base to which a swivel support is connected, the swivel support being connected to the inner tower. The single point mooring as described above, further wherein the universal joint is adapted to rotationally adjust a set of the mooring chains. The single point mooring device is characterized in that the top of the outer tower is further provided with a sealing cover, and the sealing cover is provided with a mounting hole for mounting the rolling bearing, and the inner ring of the rolling bearing is coaxially matched with the upper end of the inner tower. In the single point mooring device, further, an electric slip ring is arranged on the sealing cover, an inner rotor of the electric slip ring is connected with the inner tower, and an outer rotor of the electric slip ring is connected with the sealing cover through an outer shell of the electric slip ring. The single point mooring as described a