An online measurement system for key pipelines of boilers

Abstract

The invention discloses a crucial boiler pipeline online measurement system. The crucial boiler pipeline online measurement system comprises two obviously-identified radial deformation measurement metal blocks, a radial measurement binocular camera, two obviously-identified axial deformation measurement metal blocks, an axial measurement binocular camera, a displacement sensor and at least one stress and strain transducer, wherein the stress and strain transducers are arranged at the bottoms of the metal blocks. The displacement sensor is positioned between two prearranged axial deformation measurement metal blocks, and two sensing heads contact with the metal blocks respectively. The binocular cameras are connected with an industrial switch and are connected to a main control machine via a transmitting network bridge and a receiving network bridge. The crucial boiler pipeline online measurement system is capable of detecting data such as stress, strain and displacement of a boiler pipeline comprehensively and efficiently in real time to reflect boiler pipeline damage degree, and is used for judging remaining life of the boiler pipeline to perform failure early warning, so that safety and stable operation of electric power are guaranteed.

Description

technical field [0001] The invention relates to an online measurement system for key pipelines of boilers. Background technique [0002] With the expansion of power system capacity and scale, the failure of power equipment has a greater impact on people's production and modern life, and power users have higher and higher requirements for safe operation and reliable power supply of the system. This makes the safety and reliability of the power system more and more prominent. Therefore, ensuring the safe and stable operation of thermal power units and improving the reliability of the power system is an important part of the modern management of power companies. [0003] Superheaters, reheaters, steam pipes, headers, etc. are the parts that bear the highest steam temperature and pressure parameters in the boiler steam-water piping system, and are also the most sensitive parts to over-temperature. With the application of new materials for supercritical and ultra-supercritical ...

AI Technical Summary

Problems solved by technology

In recent years, online life assessment systems for single components have begun to appear, but because most of these systems do not take into account the interaction of multiple failure mechanisms, there is a problem of large monitoring and evaluation errors

Technical experts from Europe and Japan have established systematic life assessment guidelines for the key piping systems of boilers, which take into account the interactive effects of failure modes, and have developed corresponding calculation software, but still need to rely on offline detection data input to obtain calculation results. Many key parameters such as temperature and displacement lack online measurement systems

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