Circulating cooling water purification re-utilization automatic monitoring system

Abstract

The invention discloses an automatic monitoring system for purifying and reusing circulating cooling water, comprising a sampling device, an online instrument device, a monitoring device and a drug-adding device. The sampling submersible pump of the sampling device and the online instrument device is directly hung in the circulating water of the pool. An outlet pipe of the submersible pump are divided into 3 paths and the 3 paths respectively enter a slime collector bypass, an online instrument monitoring bypass and a simulated heat exchanger bypass. The monitoring device comprises a control cabinet and a management computer. The drug-adding device comprises three parts, namely a drug-adding pump, a drug-adding box and an inverter. The drug-adding box is connected with the drug-adding pump; the drug-adding pump is connected with the control cabinet of the monitoring device and the management computer by the inverter. The automatic monitoring system realizes real-time monitoring of the water quality of water in the circulating cooling water system of the power plant and can automatically control the addition dosage in order to purify the water quality of the circulating cooling water to realize recycling. The automatic monitoring system has good economic benefit after popularization.

Description

1. Technical field: [0001] The invention relates to an automatic monitoring system for purifying and reusing circulating cooling water of a power plant, which can automatically monitor the water quality of circulating cooling water in a power plant and realize the automatic dosing function to purify the water quality. 2. Background technology: [0002] It is very important for the power plant to monitor the circulating cooling water. When the monitoring is not effective, the circulating cooling water system (especially the heat exchanger) will have problems such as scaling, corrosion, microbial growth and slime, and it is easy to be damaged in the circulating cooling water system. The formation of fouling in the heat exchanger (condenser) not only affects the heat transfer of the heat exchange equipment, blocks the pipeline, but also causes corrosion under the deposits. Therefore, the quality of cooling water must be strictly controlled. [0003] In the circulating cooling ...

AI Technical Summary

Problems solved by technology

This extensive water quality monitoring method is inefficient and cannot respond quickly to water exceeding the standard, shortening the life of the device; it increases the required chemical substances and the resulting treatment costs, and shortens the interval between two routine maintenance; Increases the absorption of corrosive substances and corrosive substances in water, increases maintenance costs, is not economically beneficial, and is also complicated for operation

More importantly, with the construction of large-capacity, supercritical, and ultra-supercritical generating units, this monitoring method that cannot respond quickly is obviously not suitable for the monitoring requirements of large-scale units for water quality. The response is very fast, reaching the order of seconds and milliseconds, so the timeliness of cooling water quality monitoring also puts forward higher requirements

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