Method and system for monitoring leakage of heat supply pipeline

Abstract

The embodiment of the invention provides a method and a system for monitoring leakage of a heat supply pipeline. The method particularly comprises steps: original pulsed light is transmitted; according to back scattering light generated when the original pulsed light is propagated along a calibrated fiber, a corresponding relationship between a first temperature value and a first voltage ratio in the calibrated fiber is obtained; according to back scattering light generated when the original pulsed light is propagated along a temperature-measuring fiber, a second voltage ratio in the temperature-measuring fiber is obtained; according to the second voltage ratio and the corresponding relationship between the first temperature value and the first voltage ratio, a second temperature value at each position in the temperature-measuring fiber is obtained; and whether the second temperature value at each position in the temperature-measuring fiber exceeds an alarming threshold is judged, and if yes, alarming information is transmitted. The embodiment of the invention can carry out fully-automatic monitoring on the leakage condition at each position of the heat supply pipeline, manual patrol is not needed, the automatic degree is high, influences from environmental factors are little, and long-time and stable operation can be realized.

Description

technical field [0001] The invention relates to the technical field of temperature measurement, in particular to a method and system for monitoring leakage of a heating pipeline. Background technique [0002] With the rapid development of urbanization, urban residents have higher and higher requirements for municipal construction, and more and more buildings and facilities need municipal heating. Existing heating pipelines are usually laid underground. With the extension of the service life of heating pipelines, hot water leakage is very likely to occur in heating pipelines, which will cause leakage accidents or major accidents that endanger personal safety and property safety. Therefore, there is a need for a method for monitoring leakage of heating pipelines, which can monitor the leakage status of pipelines in real time, and detect hidden dangers of leakage early, so as to repair and remedy in time. [0003] There are two main types of existing heating pipeline leakage s...

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Problems solved by technology

However, once the outside water enters the insulation layer of the heating pipeline, it will also change the impedance of the sensor wires in the insulation layer, resulting in distortion of the results. Therefore, this solution requires high waterproof performance of the insulation layer of the heating pipeline. , the production process requirements for heating pipes are also very high, resulting in high cost of heating pipes

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