Jacket platform rod stress measurement sensor system and method

A jacket platform, stress measurement technology, applied in the direction of measuring force, measuring device, instrument, etc., can solve the problems of obtaining integral rods, etc., and achieve the effects of simple operation, convenient positioning, and easy acquisition and processing

Inactive Publication Date: 2015-02-25
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

The present invention aims to solve the problem that the existing stress and strain measuring instruments can only measure the stress on the surface of the bar, and it is difficult to obtain the force and deformation of the whole bar truly and accurately. It is hoped that it wil

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  • Jacket platform rod stress measurement sensor system and method
  • Jacket platform rod stress measurement sensor system and method
  • Jacket platform rod stress measurement sensor system and method

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[0037] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be pointed out that for those of ordinary skill in the art, a number of modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0038] The invention provides a method for measuring the stress and strain of a jacket platform rod member. Through the combined use of sensors, the measured stress value of the rod member surface is calculated as the actual average stress and strain of the rod member. Including the specific process of three-point method stress estimation, and the specific connection and installation method of the device. That is, the sensor base is made according to the diameter of the ro...

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Abstract

The invention provides a jacket platform rod stress measurement sensor system which comprises multiple strain sensors arranged on the same circumference at intervals and a sensor connecting base. The invention further provides a corresponding measurement method. The sensors are combined for use, measured stress values of the surface of a rod are calculated to be the average stress and strain borne by the rod actually. The average value of the whole stress and strain of the rod can be accurately acquired, operation is simple, the system is suitable for complex work conditions and working underwater for a long time under the complex sea condition, the sensors can be conveniently located and installed on the base and can be protected so as to be suitable for working under the sea surface for a long time, the sensors are high-accuracy optical fiber sensors, and signals are convenient to collect and process.

Description

technical field [0001] The invention relates to a device in the technical field of marine engineering, in particular to a method for measuring strain and stress arranged on underwater rods of a jacket platform and a corresponding installation device, which can more accurately monitor the stress of the rods. Background technique [0002] During the underwater inspection of the CNOOC Bohai BZ25-1WHPB platform, it was found that there was a crack in the weld of the rod at -18m. According to the inspection report, there are currently 6 cracks in the horizontal brace and the conduit leg on the mud surface or have fallen off. [0003] Therefore, real-time online and accurate assessment of the health status of the jacket platform, real-time monitoring of the safety and integrity of the structure, and early positioning and repair of damaged rods can reduce the incidence of offshore oil and gas accidents. small economic loss. However, relying on manual detection or ROV detection, ul...

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Application Information

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IPC IPC(8): G01L1/00
Inventor 朱一飞马磊鑫付世晓李啸雨吴剑桥林易曾亚东
Owner SHANGHAI JIAO TONG UNIV
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