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Improved damping type soft steel arm single-point mooring device

A technology of single-point mooring and soft rigid arm, which is applied in transportation and packaging, ship parts, anchoring arrangements, etc., can solve the problems of mooring platform and mooring device damage, large instantaneous mooring force, etc., and achieve the reduction of huge The effect of force, working life extension, and relative speed reduction

Active Publication Date: 2016-08-03
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has been found in both practical engineering applications and physical model tests that under the action of waves, the mooring platform will experience extreme stretching of the mooring legs or collision between the bow and the ballast water tank. These extreme phenomena will produce a large instantaneous mooring force, causing damage to mooring platforms and mooring devices

Method used

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  • Improved damping type soft steel arm single-point mooring device
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  • Improved damping type soft steel arm single-point mooring device

Examples

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Comparison scheme
Effect test

Embodiment 1

[0052] An improved damping type soft rigid arm single point mooring device, comprising: a mooring tower 1, a mooring arm 2 and a mooring frame, the mooring frame includes a bow bracket 3 and a mooring frame installed on a mooring platform The mooring leg 4, the mooring leg 4 includes an upper casing 41 and a lower casing 42 that can slide relatively, at least one damper 5 is arranged between the upper casing 41 and the lower casing 42, the Both the mooring leg 4 and the bow bracket 3 are provided with a damping box 6, and the two damping boxes 6 are arranged opposite to each other.

[0053] The upper sleeve 41 is a semi-closed tubular structure with an open end. The inner wall of the upper sleeve 41 is provided with a plurality of pipes extending along the axis of the upper sleeve 41 and evenly distributed with the axis of the upper sleeve 41 as the axis. A slideway 411, the upper casing 41 is provided with a partition 412, and the circumference of the partition 412 is evenly ...

Embodiment 2

[0062] An improved damping type soft rigid arm single point mooring device, comprising: a mooring tower 1, a mooring arm 2 and a mooring frame, the mooring frame includes a bow bracket 3 and a mooring frame installed on a mooring platform The mooring leg 4', the mooring leg 4' includes an upper sleeve 41' and a lower sleeve 42' that can slide relatively, and at least one The damper 5, the mooring leg 4' and the bow bracket 3 are all provided with a damping box 6, and the two damping boxes 6 are arranged oppositely.

[0063] The upper sleeve 41' is a semi-closed tubular structure with one end open, and the inner wall of the upper sleeve 41' is provided with a plurality of bars extending along the axis of the upper sleeve 41' and centered on the axis of the upper sleeve 41'. The shaft is evenly distributed on the slideway 411`, the upper casing 41` is provided with a partition 412`, and the center of the partition 412` is provided with a through hole 413`,

[0064] The lower ca...

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Abstract

The invention discloses an improved damping type soft steel arm single-point mooring device which comprises a mooring tower, a mooring arm and a mooring framework. The mooring framework comprises a stern support and a mooring leg which are installed on a mooring platform. The mooring leg comprises an upper casing pipe and a lower casing pipe which can slide relatively. At least one damper is arranged between the upper casing pipe and the lower casing pipe. The mooring leg and the stern support are provided with damping boxes. The two damping boxes are arranged oppositely. By the adoption of the improved damping type soft steel arm single-point mooring device, the tension borne by the mooring leg in an extreme tensioning state is effectively reduced, the acting force borne on the joints of all structural components is reduced, a damping lock is arranged between the outer wall of the upper casing pipe and the outer wall of the lower casing pipe, the working state of the damper can be selected according to the actual working sea condition, and the relative speed of the stern support and the mooring leg can be reduced through the pressure reduction of the damping boxes, so that the relative speed of a stern and a water ballast tank can be reduced, and the huge acting force generated in the extreme collision process is reduced.

Description

technical field [0001] The invention relates to the application field of offshore platform engineering, in particular to an improved damping type soft rigid arm single point mooring device. Background technique [0002] Ordinary soft rigid jib single point mooring system is mainly composed of three parts: mooring tower, mooring arm and mooring frame. It is mostly used in shallow water FPSO, and its weather vane effect can make the mooring platform in the best stress state. It has been found in both practical engineering applications and physical model tests that the mooring platform will experience extreme stretching of the mooring legs or impact between the bow and the ballast water tank under the action of waves. These extreme phenomena will produce a large instantaneous mooring force, causing damage to mooring platforms and mooring devices. Contents of the invention [0003] The technical problem to be solved by the present invention is to add a damping device to the o...

Claims

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Application Information

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IPC IPC(8): B63B21/50
CPCB63B21/50
Inventor 马玉祥贾勇马小舟董国海宗智孙雷
Owner DALIAN UNIV OF TECH
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