Wet cooling unit cold end performance monitoring and intelligent diagnosis system for

Abstract

The invention discloses a wet cooling unit cold end performance monitoring and intelligent diagnosis system. The system comprises a data acquisition system, a plant-level monitoring information system, an Internet of Things cloud platform and a monitoring terminal; the data acquisition system is provided with an environmental meteorological parameter sensor, an out-of-tower air parameter sensor, a circulating water flow sensor and a water quality monitoring sensor; data transmission can be performed between the plant-level monitoring information system and the Internet of Things cloud platform; a data analysis module of the Internet of things cloud platform obtains change trends of the thermal performance and the resistance performance of a cooling tower by periodically calculating the thermal performance and the resistance performance of the cooling tower so as to judge the fouling and scaling degree of a filler and the influence degree of the filler on the performance of the cooling tower and guide cleaning and replacement of the filler; the influence degree of environmental wind on the performance of the cooling tower is evaluated by comparing the performance of the cooling tower under an actually-measured working condition and the performance of the cooling tower under a windless condition corresponding to the actually-measured working condition, so that operation optimization of the cooling tower can be guided; and a data storage module and a monitoring large screen are used for data storage and display, and remote monitoring is achieved through the monitoring terminal.

Description

technical field [0001] The invention belongs to the field of wet-cooling units of thermal / nuclear power plants, and in particular relates to a cold-end performance monitoring and intelligent diagnosis system of wet-cooling units. Background technique [0002] The performance of the cold end system of the wet cooling unit has an important influence on the steam exhaust parameters of the steam turbine and the thermal efficiency of the unit. The water spray filler is one of the important components of the wet cooling tower, and its thermal performance and resistance performance are directly related to the cooling performance of the wet cooling tower. However, in the actual operation process, due to the fouling and aging of the filler, its thermal resistance performance will decrease with the prolongation of the service time, which will lead to a decrease in the ventilation volume of the cooling tower and a decrease in cooling performance; The deviation between the actual operat...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the lack of monitoring of the overall performance of the cold end of the wet cooling unit in the current technology, and the decline in the thermal resistance performance of the filler affects the cooling performance of the cooling tower, and provides a performance monitoring and intelligent diagnosis system for the cold end of the wet cooling unit. By setting the environmental meteorological parameter sensor, the tower air parameter sensor, the circulating water flow sensor and the water quality monitoring sensor, the IoT cloud platform integrates the monitoring data of each sensor and the unit operation data of the plant-level monitoring information system, and regularly monitors the thermal performance of the cooling tower. Analysis and calculation of the thermal performance and resistance performance of the cooling tower in different periods, judging the scaling of the packing through the change trend of the thermal performance and resistance performance of the cooling tower, and guiding the cleaning and replacement of the packing; Tower performance Real-time evaluation of the impact of ambient wind on the thermal performance of the cooling tower, guiding the optimization of cooling tower operation, reducing the adverse impact of ambient weather conditions on cooling tower performance, and improving the economy of unit operation

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