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Test system for simulating installation load of upper bending section in horizontal laying process of umbilical cable

A test system and umbilical cable technology, which is applied in the field of marine engineering, can solve the problems of difficulty in simulating installation tests, rarely seen technical research, etc., and achieve the effects of reducing test costs, wide adjustment range, and precise movement stroke

Pending Publication Date: 2022-02-25
NINGBO INST OF DALIAN UNIV OF TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complexity of the installation process and the difficulty of simulated installation tests, research on related technologies is rarely seen

Method used

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  • Test system for simulating installation load of upper bending section in horizontal laying process of umbilical cable
  • Test system for simulating installation load of upper bending section in horizontal laying process of umbilical cable
  • Test system for simulating installation load of upper bending section in horizontal laying process of umbilical cable

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and specific examples.

[0029] Firstly, the scaling ratio is calculated according to the test requirements, and the launching bridge 4 and the test cable 3 are made according to the ratio. The six-degree-of-freedom motion platform 1 is installed on the laboratory floor 10, and is connected and debugged with the supporting host computer. After the debugging, other parts of the test device are installed. First fix the fixed end 2 above the upper platform of the six-degree-of-freedom motion table 1 through two bolts 11, and the clamp part of the fixed end 2 is used to fix the test cable 3; then install the lower bridge 4 on the upper platform of the six-degree-of-freedom motion table 1 At the edge of one end, note that the radius and material of the lower bridge 4 should be consistent with the lower bridge in the prototype experiment; the pressure sensor 13 is installed a...

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Abstract

The invention discloses a test system for simulating the installation load of an upper bending section in a horizontal laying process of an umbilical cable, and belongs to the field of ocean engineering. According to the test system, a six-degree-of-freedom motion platform is fixedly installed on the ground of a laboratory, a underwater bridge is fixed to one side of an upper platform of the six-degree-of-freedom motion platform, one end of a test cable is fixed to the six-degree-of-freedom motion platform and lowered along the underwater bridge, and a weight is hung at the other end of the test cable. A rope is adopted to restrain the balance weight, and the water entry angle of the test cable under the actual installation working condition is simulated by controlling the lowering angle of the test cable. The six-degree-of-freedom motion platform is utilized to enable the test cable to swing above the underwater bridge, and the motion condition of the pipe laying ship under the real sea condition is simulated. A sensor is used for measuring the contact pressure between the underwater bridge and the test cable, the internal tension of the umbilical cable, the displacement of the umbilical cable, the acceleration and other responses. According to the invention, the mechanical behavior of the umbilical cable under the action of multiple loads in the horizontal laying process under the actual working condition can be accurately and comprehensively reflected; and sea conditions with different intensities can be simulated.

Description

technical field [0001] The invention belongs to the field of marine engineering, and relates to a test system for simulating working conditions during the horizontal laying of umbilical cables. Background technique [0002] The umbilical cable is an important part of the development and construction of deep-water oil and gas fields. It is called the "nerve line" of offshore oil and gas fields and plays a key role in the development, production and export of offshore oil. As the development of my country's oil and gas resources continues to move towards deep water, the number of flexible umbilical cables will increase greatly, and the engineering demand for corresponding installation and maintenance will also increase accordingly. [0003] During the horizontal installation of the umbilical cable, the interaction between the umbilical cable and the launching bridge is the main load affecting the laying safety. During the launching process of the umbilical cable, it is subjec...

Claims

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Application Information

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IPC IPC(8): G01M10/00
CPCG01M13/00
Inventor 陈金龙张宇卢青针张陶吴尚华尹原超张聪
Owner NINGBO INST OF DALIAN UNIV OF TECH
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