An intelligent steel strand end optical fiber joint packaging connector and its installation method

Abstract

Provided are an optical fiber splice encapsulation connector for intelligent steel strand ends and an installation method. An intelligent steel strand central wire is arranged inside a connecting inner cylinder, a fiber bragg grating sensor is embedded in an axial groove of the intelligent steel strand central wire, a flange adapter sleeve is connected with the connecting inner cylinder and optical fiber flange adapters in a sleeving mode through inner threads on both ends, and the interior of one side of the connecting inner cylinder is connected with the steel strand central wire through a thread; a connecting outer cylinder is composed of a steel strand encapsulation sleeve, an outer cylinder adjusting sleeve and an outer cylinder cover; the outer cylinder adjusting sleeve is connected with the connecting inner cylinder in a threaded mode, a first outer thread and a second outer thread of the outer cylinder adjusting sleeve are arranged on the two sides protruding outwards of the middle portion of the exterior of the outer cylinder adjusting sleeve respectively, the second outer thread of the outer cylinder adjusting sleeve is connected with the steel strand encapsulation sleeve, the inner face of the outer cylinder cover is provided with an outer cylinder cover inner thread, and the outer cylinder cover is connected with the outer side of the outer cylinder adjusting sleeve in a sleeved mode through the first outer thread of the outer cylinder adjusting sleeve to encapsulate the optical fiber flange adapters. Encapsulation of the optical fibers at the end of a steel strand is successfully protected, the operation method of the device is easy and convenient, encapsulation is tight, and encapsulation spaces are greatly saved.

Description

technical field [0001] The invention relates to the field of end packaging of optical fiber grating intelligent steel strands, in particular to an optical fiber joint packaging connector at the end of intelligent steel strands and an installation method thereof. Background technique [0002] Fiber Bragg grating intelligent steel strands are applied in fields such as buildings, bridges, and prestressed rock and soil. For example, 201510761374.X discloses a large-range intelligent high-strength steel wire coupled with fiber Bragg The optical fiber wire and the protective layer are set in the groove, and the rotation angle of the groove is changed according to the strain range of the component to expand the measuring range of the fiber grating sensor, so as to measure and transmit the data of the steel wire performance; [0003] 201610980023.2 discloses a fiber grating intelligent steel strand and its manufacturing method, including a central wire, and side wires twisted by the...

AI Technical Summary

Problems solved by technology

[0003] 201610980023.2 discloses a fiber grating intelligent steel strand and its manufacturing method, including a central wire, and side wires twisted by the central wire, the central wire is provided with at least one groove, and the groove is placed with Optical fiber, at least one grating is engraved on the optical fiber, which can solve the technical problems of low survival rate of the layout process and low monitoring range when the existing optical fiber grating monitors the stress condition of the steel strand

Due to the lack of effective fiber end packaging technology in the prior art, the overall equipment layout process of fiber gratings using the prior art has a relatively long survival rate, and even loses its use value during transportation, resulting in a large loss of manpower and material resources. Therefore, it is particularly necessary to provide an effective intelligent steel strand end packaging device and method

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