Marine dynamic umbilical cable tension bending combination fatigue test device easy to adjust

A fatigue test and umbilical cable technology, applied in the direction of testing material strength by applying stable bending force, testing material strength by applying stable tension/compression, etc., to achieve good flexibility, easy installation, and convenient disassembly

Active Publication Date: 2016-08-24
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on the fatigue life analysis of dynamic umbilical cables is still in the exploratory stage. It is necessary to build an indoor prototype fatigue test system to simulate the stress of dynamic umbilical cables under combined tension and bending conditions, and to test the fatigue life of dynamic umbilical cables.

Method used

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  • Marine dynamic umbilical cable tension bending combination fatigue test device easy to adjust
  • Marine dynamic umbilical cable tension bending combination fatigue test device easy to adjust
  • Marine dynamic umbilical cable tension bending combination fatigue test device easy to adjust

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Embodiment Construction

[0024] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.

[0025] An easy-to-adjust combined tension-bending fatigue test device for marine dynamic umbilical cables, including a swing head device, a movable frame, a test umbilical cable, a tensile loading device, a bending loading device and an artificial ground foundation; one end of the test device is controlled by a force The hydraulic cylinder applies a constant tensile load, and the other end applies a cyclic bending load to the swing head through a displacement-controlled hydraulic cylinder. The artificial ground foundation placed in this test is 20 meters long and 6 meters wide, so umbilical cables of various lengths within 20 meters can be tested. Among them, the swing head device is 1.2 meters wide, which can simulate the fatigue test of actual working conditions for umbilical cables with a diameter of les...

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Abstract

The invention provides a marine dynamic umbilical cable tension bending combination fatigue test device easy to adjust. The device comprises a swing head device, movable frames, a test umbilical cable, a tensile loading device, a bending loading device and an artificial ground foundation. The test device applies constant tension loads to the umbilical cable through the movable frame and the tension loading device at one end, and applies circulating bending loads through the two three-direction movable frames, the swing head device and the bending loading device at the other end, accordingly the stress condition of the umbilical cable is simulated under the actual marine environment and floating motion, and fatigue service life of the dynamic umbilical cable in the actual service process is verified. A distributed modular design method is adopted to a tester, disassembly and assembly can be achieved according to of objects with different lengths and different apertures, and the device has the advantages of being convenient to install and operate and the like.

Description

technical field [0001] The invention relates to a fatigue test device for an umbilical cable of an underwater production system for marine dynamic applications, in particular to an end portion of a dynamic umbilical cable that is prone to fatigue failure and is connected to an upper floating body, and simulates the umbilical cable and corresponding auxiliary components The design of the test device for fatigue life under the combined tensile load and bending cyclic load in the actual service process. Background technique [0002] Subsea production system is an economical and effective development mode in deepwater oil development. With the rapid development of my country's South China Sea oil development, it has broad application prospects. The dynamic umbilical cable connecting the offshore floating body and the subsea equipment is one of the key equipment of the subsea production system, providing power, hydraulic and chemical agent injection and data transmission for the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/10G01N3/20
CPCG01N3/10G01N3/20
Inventor 卢青针孙家斌尹原超肖少洋陈金龙杨志勋阎军岳前进
Owner DALIAN UNIV OF TECH
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