Non-contact measuring equipment for radial deformation of submarine cable

Abstract

The invention discloses non-contact measuring equipment for radial deformation of a submarine cable, which belongs to the field of submarine device testing and is used for scanning the contour of thesubmarine cable and accurately measuring the radial deformation of the submarine cable. The non-contact measuring equipment comprises a lifting table and two sets of identical scanning devices, wherein each set of scanning device comprises a fixed plate, a guide rail, a driving device and two sensors; the two sets of identical scanning devices are symmetrically arranged on both sides of the lifting table to realize full contour scanning of a submarine cable to be measured; the lifting table can be adjusted according to the position of the submarine cable in an experiment in order to adapt to the experimental environment; the driving device can output a relatively low revolving speed to ensure adequate scanning time; and a ball screw guide rail can meet the requirement of experimental accuracy in a relatively economical way. The contour of the submarine cable is scanned through the cooperation of multiple sensors, so that the radial deformation of the submarine cable is measured accurately, which is of great significance to the stiffness analysis of the submarine cable.

Description

technical field [0001] The invention belongs to the field of marine equipment testing and relates to a non-contact measuring device for radial deformation of submarine cables. Background technique [0002] In the harsh marine environment, flexible submarine cables have become the best choice. However, as the development of offshore oil and gas resources gradually advances to the deep sea, more requirements are put forward for flexible submarine cables in terms of mechanical properties. At the same time, it is necessary to use experimental methods to more accurately predict the performance of submarine cables. [0003] Due to the particularity of the structure of the marine flexible submarine cable, in the stiffness analysis of the submarine cable, the angle of the inner armored steel wire layer will change under the condition of force, causing radial deformation, and then affecting the overall stiffness. However, many existing experimental methods cannot measure the radial ...

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Problems solved by technology

[0004] At present, due to the continuous increase of the axial tension during the test of the flexible submarine cable, the radial deformation of the inner core also continues to change, which brings great difficulties to its measurement, and there is no device for measuring the radial deformation of the flexible pipe in China.

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