Intelligent anti-freezing system and method applied to air cooling island

Abstract

The invention discloses an intelligent anti-freezing system and method applied to an air cooling island. The intelligent anti-freezing system comprises a upstream area anti-freezing device, a downstream area anti-freezing device, an intelligent anti-freezing control system and an infrared thermal imager used for detecting the heat exchange condition of finned tubes on the two sides of a cooling unit; the infrared thermal imager is connected with the intelligent anti-freezing control system, and the intelligent anti-freezing control system is connected with the upstream area anti-freezing device and the downstream area anti-freezing device. According to the intelligent anti-freezing system, an air cooling finned tube is divided into the high freezing risk area, the medium freezing risk areaand the low freezing risk area, the partition anti-freezing strategy is adopted, and the problem that in the prior art, the anti-freezing effect of the downstream area and the anti-freezing effect ofthe upstream area are inconsistent is solved. An intelligent anti-freezing control system is adopted, the unfolding length of the anti-freezing electric heating heat preservation curtain and the heating value of an electric heating belt in the anti-freezing electric heating heat preservation curtain are finely controlled, the temperature of condensed water in the air cooling finned tube is kept above the freezing temperature, and the optimized anti-freezing effect is achieved.

Description

technical field [0001] The invention belongs to the field of antifreeze for air-cooled islands, and relates to an intelligent antifreeze system and method applied to air-cooled islands. Background technique [0002] Direct air-cooled generating units are widely distributed in northern China. This type of unit uses air as a heat exchange medium to cool the exhaust steam of the steam turbine. In recent years, due to the increasing demand for deep peak regulation in the heating season, many power plants have carried out flexible transformations, making the air-cooled island operate under low-flow conditions for a long time. , greatly increasing the risk of the air-cooled island freezing the tubes in winter. Contents of the invention [0003] In order to overcome the above shortcomings, the object of the present invention is to propose an intelligent antifreeze system and method applied to air-cooled islands. The system has the characteristics of intelligent identification, a...

AI Technical Summary

Problems solved by technology

In recent years, due to the increasing demand for deep peak regulation in the heating season, many power plants have carried out flexible transformations, making the air-cooled island operate under low-flow conditions for a long time. , which greatly increases the risk of the air-cooled island freezing the tubes in winter

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