Optical fiber temperature sensor

Abstract

The invention discloses an optical fiber temperature sensor, which belongs to the field of optical fiber sensing. The optical fiber temperature sensor comprises a plurality of sections of pipeline main bodies, the pipeline main bodies are fixedly connected with a plurality of optical fiber sensors, the outer sides of the optical fiber sensors are provided with a pair of inspection columns which are clamped with each other, each inspection column comprises a semicircular shell, and the two ends of each semicircular shell are provided with rubber cones; a guide wheel is rotatably connected in the rubber cone, a micro motor matched with the guide wheel is installed in the rubber cone, the outer side of the semicircular shell is sleeved with a protection ring, a circuit board matched with the detection sleeve is connected between the pair of inspection columns, and the pair of inspection columns are both connected with the circuit board in a clamped mode.By installing a plurality of optical fiber sensors equidistantly on the pipeline, the detection device circularly moving on the pipeline performs data management on the plurality of optical fiber sensors, and when the pipeline is overheated, the detection device can perform protection and data storage on the optical fiber sensors in time.

Description

technical field [0001] The invention relates to the field of optical fiber sensing, in particular to an optical fiber temperature sensor. Background technique [0002] The operating environment of buried thermal pipelines is relatively complex, where there are water, corrosion, high temperature, high stress, and strong electromagnetic fields. In the distributed optical fiber temperature measurement and vibration measurement technology, the optical fiber is both a sensor and a signal transmission medium, so it is very important to choose a suitable sensing optical fiber for the complex environment of the thermal pipeline. The carbon-sealed coated optical fiber currently used for submarine cables can be used in power plants, seabeds, oil fields, natural gas wells, etc. where there is a large amount of water, hydrogen, corrosion, high temperature and pressure, high stress, and strong electromagnetic fields. It uses optical fiber sensing technology to replace traditional electr...

AI Technical Summary

Problems solved by technology

[0004] There are multiple optical fiber sensors on the pipeline of the thermal system to monitor the temperature change and vibration information of the mechanical devices in the thermal system in real time. However, there is no effective protection for these optical fiber sensors. When the thermal pipeline is overheated and partially blocked, resulting in local overheating, Optical fiber sensors are easily damaged by overheating, and there are no protective measures for optical fiber sensors on current thermal pipelines

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