A temperature measurement method based on seamless steel pipe composite optical fiber on the outer wall of coal gasifier

Abstract

A temperature-measuring optical fiber device based on seamless steel pipe composite optical fiber on the outer wall of a coal gasifier and a distribution method for surface distribution of high-efficiency temperature measurement, including temperature measuring optical fiber (1), seamless steel pipe (2), stainless steel jacket (3), the second One hole (4), second hole (5), fixture (6), etc. Through the special distribution method on the surface of the coal gasifier, the length of the optical fiber staying in a certain area is the longest, more temperature points can be measured and accurate temperature values ​​can be obtained, and the temperature mutation point can be correctly positioned at In that area, it provides an optical fiber distribution method to explore whether the temperature-measuring optical fiber can realize the temperature monitoring of the outer wall of the coal gasifier, and creates conditions for researchers to explore real-time monitoring methods for monitoring the temperature change of the outer wall of the coal gasifier.

Description

technical field [0001] The invention relates to the field of high-temperature optical fiber temperature measurement, in particular to an optical fiber device for efficiently and accurately measuring the temperature of each measurement point on the outer wall of a coal gasification furnace and a distribution method thereof. Background technique [0002] When the coal gasification furnace is working normally, the temperature of the furnace wall reaches about 200°C. However, the refractory bricks lining the combustion chamber will be eroded at high temperatures, and the heated gas and slag will be washed away, making the refractory bricks continue to become thinner, and even in some cases Next, due to the defects of bricklaying, the refractory bricks will fall off, making the surface temperature of the gasifier wall rise to 300°C or even higher. The traditional measurement methods mainly include traditional surface thermocouples, gasifier surface cable temperature measurement a...

AI Technical Summary

Problems solved by technology

The high-temperature optical fibers on the market are mainly seamless steel pipe composite optical fibers, which can be used in high-temperature and harsh environments. The defect of this optical fiber is that the flexibility of the optical fiber is sacrificed due to the protection of the steel pipe jacket, and the refractory bricks are thinned or shed. The situation is random, and the measurement effect of the traditional linear distributed seamless steel pipe composite optical fiber is not obvious. How to distribute the optical fiber can correctly and quickly determine the location of the abnormal situation, so that the staff can repair the coal gasifier in the later stage Maintenance saves a lot of time

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