A kind of marine riser underwater grating sensing monitoring installation device

The underwater fiber optic grating sensor monitoring installation device for marine risers solves the problem of underwater installation of fiber optic grating sensors by utilizing the combination of the base body and tension bolts and two-component adhesive encapsulation. It achieves efficient and safe monitoring of marine risers, adapts to different riser diameters, and is corrosion resistant.

CN122149351APending Publication Date: 2026-06-05CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2024-12-04
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

In the existing technology, fiber optic grating sensors are difficult to install in the underwater part of marine risers. Underwater operations increase the workload of operators and reduce the accuracy of operations. In addition, the commonly used packaging methods are not suitable for underwater monitoring of marine risers.

Method used

An underwater fiber optic grating sensor monitoring installation device for marine risers was designed. It adopts the cooperation of the base body and tension bolts to realize the pre-tightening installation of the fiber optic grating sensor on land. Combined with the encapsulation and release structure of two-component adhesive, the base and riser are fixed by welding, prestressed glass breaking and bonding or pre-tensioned rubber film breaking and bonding. It is adaptable to different riser diameters and has corrosion resistance.

Benefits of technology

It enables pre-tightening installation of fiber Bragg grating sensors on land, reducing underwater operation costs, improving operational efficiency and accuracy, adapting to the monitoring needs of underwater risers, possessing corrosion resistance and adaptability, and meeting the long-term monitoring requirements of underwater risers.

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Abstract

The application discloses a kind of marine riser underwater grating sensing monitoring installation devices, it is related to marine structure monitoring equipment technical field, including the first base body for fixing the one end of encapsulation pipe and the second base body for fixing the other end of encapsulation pipe, first base body and second base body are connected by tension bolt, tension bolt is arranged in parallel with encapsulation pipe;The device can realize the prestress installation of fiber grating sensor (including encapsulation pipe) and base on land, realize the efficient fixation of base and riser under water, simple operation, safe and reliable, low operating cost, can adapt to special underwater operating environment, auxiliary fiber grating sensor carries out long-term real-time dynamic monitoring to marine riser, to ensure that marine riser structure stability and safety, provide support guarantee for the safe operation of marine riser.
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