Combined device of calibration box and temperature-sensing optical fiber

Abstract

The invention provides a combined device of a calibration box and a temperature-sensing optical fiber. The combined device comprises the calibration box and the temperature-sensing optical fiber, wherein the calibration box is provided with an annular containing groove and the temperature-sensing optical fiber is wound into a circular shape corresponding to the annular containing groove and placed in the containing groove; and two free ends of the temperature-sensing optical fiber extend out of the calibration box and the calibration box is made of a metal material to conduct heat, so as to realize an inner temperature balance of the calibration box. The combined device provided by the invention has the advantages that: the structure is simple, the cost is low and the manufacturing is easy; the temperature in the calibration box can be well transferred and is rapidly balanced; and the temperature transfer in and out of the calibration box can be effectively decreased under the condition that the inner temperature is balanced, so that a better constant-temperature effect can be achieved.

Description

technical field [0001] The invention relates to the technical field of distributed optical fiber temperature measurement systems, in particular to a combination device of a calibration box and a temperature-sensitive optical fiber. Background technique [0002] Distributed optical fiber temperature measurement system is a device for real-time measurement of spatial temperature field distribution, which is mainly composed of temperature sensing optical cable, temperature calibration device, data acquisition module, data processing module and graphic display module, temperature calibration device It is an important part of the temperature sensing system. The quality of its calibration method directly affects the performance indicators of the entire system. The temperature calibration device generally includes a certain calibration box and a temperature sensing optical fiber. The level of calibration box technology directly affects the calibration data bias. [0003] However, ...

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Problems solved by technology

[0003] However, the design structure of the existing calibration box is unreasonable, and the calibration box is generally made of plastic. Although this kind of calibration box has a good thermal insulation effect, the slow temperature transfer in the box will easily cause calibration. The temperature inside the calibration box is not uniform, which brings a large error to the calibration data, thus bringing a large error to the temperature measurement results of the entire system, and the hardness of the plastic product is not high, it is easy to deform when subjected to external force, and it is very easy to crush bare fiber

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