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Construction method of single point mooring float den

A construction method and single-point mooring technology, which is applied in the field of shipbuilding, can solve the problems of increasing the number of welding, difficulty in height control, large shrinkage of cone diameter, etc., to achieve the effect of reducing height and ensuring levelness

Inactive Publication Date: 2007-08-29
SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The increase in the number of welds makes it more difficult to control the height
[0013] 3. With the cone as the center line, install layer by layer from the center outward, which will inevitably cause a large shrinkage of the cone diameter

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] The construction scheme of the single-point float hole of the present invention is divided into three stages. First, the prefabrication of the middle cone is carried out, and then the upper and lower rings are respectively assembled and welded. Because the float hole is installed in the hull bow section (FE01), and FE01 is built normally, and the float hole is gradually assembled from bottom to top, so it reduces turning over and ensures positioning accuracy.

[0043] Since welding is the main reason affecting the structural accuracy, the assembly and welding work is implemented in stages, and the deformation and accuracy are controlled in stages, so as to achieve the total size control. Therefore, the welding of the entire float cavity must be considered comprehensively.

[0044] (1) In terms of welding method: In order to reduce welding deformation, CO2 gas shielded welding with small heat input is selected.

[0045] (2) On the welding material: Kobelco DW-100 high-ef...

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PUM

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Abstract

The invention discloses a construction method of single-point float socket, which comprises the following processes: (1) the construction of the central cone; (2) the assembly and the jointing of the float socket. The characteristics are: during the construction of the central cone, locate the uniform twelve taper plates, the centers of the tapers and their heights, and adopt the symmetrical jointing from the bottom to the top; during the assembly and the jointing of the float socket, stepping locate the front of the ship body, and decide the central of the circle and the central elevation and use it as the testing fiducial line. The invention controls the jointing misshaping and ensures the matching precision of float and the float socket.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to a method for constructing single-point mooring buoy holes. Background technique [0002] FPSO is a floating production and storage vessel with a single bottom and double skin structure operating in the South China Sea. The single point mooring is arranged at the bow. It is the only connection equipment between the oil storage vessel and the offshore oil production system. Subsea oil, The buoy is connected to the buoy through the oil delivery hard pipe and the oil delivery hose. The buoy is generally fixed by nine seabed anchors, and the depth in the water is adjusted through the air buoy. When the oil storage ship is towed above the buoy, lower the steel cable and hook device, pull the buoy into the buoy hole and fix it with a hydraulic locking device. Realize that the oil storage ship can be effectively and conveniently connected with the oil production equipment under any...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B9/00B63B35/44
Inventor 张小燕陆伦裕马德昌阎焱
Owner SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD