A Distributed Thermal Pipeline Leakage Monitoring System

Abstract

The invention provides a distributed thermal pipeline leakage monitoring system. The system includes an optical fiber temperature measurement host, an industrial computer, and a temperature measurement optical cable, wherein: the optical fiber temperature measurement host includes N temperature measurement channels, and each temperature measurement channel is connected to A temperature measurement optical cable, the temperature measurement optical cable is laid along the whole pipeline with the thermal pipeline as the carrier, the temperature measurement channel sends pulsed light signals to the temperature measurement optical cable, and the scattered light sent back from the temperature measurement optical cable is collected in real time, according to the refractive index of the temperature measurement optical cable And the scattered light intensity, get the temperature and temperature change rate numerical curve of the whole line on the thermal pipeline, and determine the average temperature and maximum temperature change rate of the required monitoring position through the length of the optical cable laid on different monitoring positions from the optical fiber temperature measurement host , and determine whether each thermal pipeline is in a leaking state according to the set temperature change rate threshold.

Description

technical field [0001] The invention belongs to the technical field of on-line monitoring and measurement of thermal systems, and in particular relates to a distributed thermal pipeline leakage monitoring system. Background technique [0002] The thermal pipeline is the basic component of the heating system of the city or the park, and it is the circulation path for the heating medium to be transported to the thermal inlet of the building. In order to save the occupied area, at present, the construction method of laying the thermal pipeline is basically buried. However, the underground soil contains various substances such as air, water, salt, acid and alkali, and its complex environment is easy to damage the thermal pipeline, especially the pipeline. The valves, filters, water separators, water collectors and pipeline connections in the pipeline are corroded, resulting in pipeline leakage, causing serious waste of energy, shortening pipeline life and other problems, and may...

AI Technical Summary

Problems solved by technology

There are many technical means for temperature sensing and monitoring, but since thermal pipelines are transported over long distances, when using infrared thermal imaging technology and ordinary point temperature sensors to cover the entire pipeline network and monitor the temperature in real time, the system structure is complex and the operation and maintenance costs are relatively high. high

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