A sensor structure for long-term stress measurement of deep-water marine engineering structures

Abstract

The invention relates to a sensor structure for deepwater oceanographic engineering structural stress long-term measurement. The sensor structure comprises a thin-wall body, wherein a cover plate is fixedly connected to the upper portion of the thin-wall body, a sliding groove is formed in the inner portion of the thin-wall body, a temperature compensation plate is arranged in the sliding groove, an electric resistor strain gauge is adhered to the temperature compensation plate, a boss is arranged inside the thin-wall body, a first installation hole is formed in the boss, and a watertight connector is arranged in the first installation hole. The sensor structure is simple in structure, small in size, convenient to install and high in measurement accuracy, deepwater oceanographic engineering structural stress long-term measurement is effectively achieved through the sensor structure, the sensor structure is suitable for the underwater high-pressure environment, the accuracy and installation requirements of deepwater oceanographic engineering structural stress long-term measurement are met, the service life is greatly prolonged, and the isolating and sealing capacity is good.

Description

technical field [0001] The invention relates to the field of sensors, in particular to a sensor structure for long-term stress measurement of deep-water marine engineering structures. Background technique [0002] Deepwater marine engineering structures include offshore drilling platforms, underwater vehicles, submersibles, ships, etc. Most of these underwater engineering structures are made of steel. This steel structure is vulnerable to seawater corrosion, wave impact, seawater pressure in the marine environment. and other acting loads, structural damage and destruction occur from time to time during long-term use. Once structural damage occurs, active and effective measures should be taken to repair and strengthen the above structure, otherwise the damage will gradually expand over time and cause catastrophic accident. Therefore, it is necessary to grasp the safety status of the above-mentioned structure in a timely manner. An important parameter for detecting the safety...

AI Technical Summary

Problems solved by technology

[0003] In the past short-term measurements, the stress measurement of deep-water marine engineering structures was realized by sensor resistance strain gauges. The above-mentioned sensor resistance strain gauges were basically immersed in seawater after ordinary sealing. The direct effect of the resistance strain gauge is prone to moisture ingress, resulting in a decrease in insulation value, an increase in capacitance, and even loosening of the film base

Under the long-term effects of high water pressure, high humidity, high salt and temperature changes in the marine environment, the base of the resistance strain gauge is prone to aging, and the performance will creep or even degumming or insulation will be reduced.

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