Circulated water system of thermal power plant

Abstract

The invention relates to a circulated water system of a thermal power plant. Aiming to the defect that the circulated water system in the prior art is easy to cause system scaling and waste of water resources, the invention discloses the circulated water system of the thermal power plant. The circulated water system of the thermal power plant disclosed by the invention comprises a circulated water pool, a circulated water pump, a condenser, a cooling tower, a control device, a drain valve and a charge pump; the circulated water pool, the circulated water pump, the condenser and the cooling tower are sequentially connected via pipelines; the control device is connected with the drain valve and the charge pump; the control device comprises a DCS (Distributed Control System), a circulated water detection system, a drain valve controller and a charge pump controller; the DCS system is connected with the drain valve controller and the charge pump controller; and the circulated water detection system is composed of a temperature detection device, a total hardness detection device, a total alkalinity detection device, a pH valve detection device and a conductivity detection device and used for timely detecting circulated water parameters and inputting the circulated water parameters into the DCS. The circulated water system of the thermal power plant is mainly applied to a circulated water cooling system of the thermal power plant.

Description

technical field [0001] The invention relates to a circulating water system of a thermal power plant, in particular to a circulating water quality detection and control system. Background technique [0002] Circulating water has been used in power plants, chemical plants and many heat exchange equipment for a long time. The amount of water is huge and the economic cost is high. Due to the heat dissipation and evaporation of circulating cooling water, the content of various minerals and ions in the water is continuously concentrated and increased, and precipitated and deposited on the heat transfer surface, which makes the heat transfer performance of the heat exchanger worse, the heat transfer efficiency decreases, and the energy consumption increases. It can cause blockage of pipes, reduced water flow and corrosion under scale. In the circulating cooling system, most of the heat exchangers and pipes are made of metal. The contact of metal materials with salt and dissolved o...

AI Technical Summary

Problems solved by technology

[0028] The technical problem to be solved by the present invention is to provide a circulating water system of a thermal power plant based on a computer distributed control system (DCS) in view of the shortcomings of the prior art circulating water system that easily cause system fouling and waste of water resources

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