Fiber grating sensor packaging device for measuring support and hanger pull rod strain

Abstract

The invention discloses a fiber grating sensor packaging device for measuring support and hanger pull rod strain. The device is formed by a base and a cover plate. The base is formed by two clamping components which are symmetrically arranged at left and right sides. The two clamping components are connected to be a whole body through an arc bottom face. Each of the clamping components is formed by end parts arranged at two ends and a center part arranged in the middle. A bare grating area is arranged between the two clamping components which are symmetrically arranged at left and right sides. Two ends of the bare grating area are provided with fiber areas. The other end of each of the fiber areas is provided with a fiber clamp area. According to the technical scheme of the invention, in order to raise the fitness of a fiber grating sensor pull rod, the base is designed to be a circular arc surface which is matched with the curve of a fixed position, in the process of packaging, the fiber grating is placed into the bare fiber area and the fiber areas and is clamped tightly through fiber clamps, an instantaneous drying adhesive is used to fix a fiber position to be tightly attached with a package base, an epoxy resin adhesive is used for permanent fixation, and finally a cover plate and the base are bonded to be a whole body.

Description

technical field [0001] The invention belongs to the field of strain sensors, and relates to a packaging device for protecting optical fiber gratings, in particular to a grating optical fiber packaging device for measuring the strain of a round rod member. Background technique [0002] At present, thermal power generation occupies a dominant position in my country's power industry. Due to its high power generation efficiency and low energy consumption, ultra-supercritical thermal power generating units have gradually become the mainstream trend of generating units. Debugging puts higher demands on it. As the pipeline transportation system of the ultra-supercritical unit, the steam pipeline has very strict requirements for installation, commissioning and monitoring during service due to its important position. The study found that the service state of the support and hanger used to fix the steam pipeline in the generator set has a great influence on the stress distribution of ...

AI Technical Summary

Problems solved by technology

The conventional fiber grating sensor pastes the FBG directly on the test point of the test piece. This method has the advantages of simple operation, can observe and control the damage of the FBG during the assembly process, and is easy to replace the damaged sensor, but the disadvantage is that it is easy to be damaged. Damaged by external forces and affected by the external environment

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