Circulating cooling water quality monitoring system and equipment

Abstract

A system uses PLC programmable controller as a core with nine attachment units as pH on line detection unit, electric conductivity on line detection unit, flow rate on line detection unit, hardness on line detection unit, corrosion resistance on line detection unit, C1 concentration on line detection unit, automatic control unit for proportionally adding medicine, water supplementing automatic control unit and pollution discharging automatic control unit so that automatic control for adding medicine, automatic discharging of concentrated water and automatic supplementing of fresh water can be realized.

Description

Technical field: [0001] The invention belongs to the field of automation and environmental protection, in particular to a circulating cooling water quality monitoring system and equipment. Background technique: [0002] Scaling and corrosion of the cooling water system is one of the main hazards of cooling equipment damage and efficiency reduction. During the continuous circulation of industrial circulating cooling water, due to changes in water temperature and flow rate, water evaporation loss, and the concentration of various inorganic and organic substances, cooling towers and cold water pools are exposed to sunlight, wind, rain, and dust outdoors. The combination of various reasons such as the entry of sundries and equipment structure and materials will lead to serious sediment adhesion, equipment corrosion and a large number of microorganisms. They will destroy the process performance of the circulating cooling equipment, damage the equipment, threaten the long-term sa...

AI Technical Summary

Problems solved by technology

But at present in China, the online monitoring of circulating cooling water is mostly limited to the monitoring of conductivity or a single ion, the response to corrosion is difficult to be comprehensive, and the ability to predict scaling is also very limited; in terms of water quality control There are still big problems, especially the control of the dosing system, neither the determination of the dosing amount nor the dosing time can be accurate and automated

The disadvantages of this are obvious: since the agent added is strong acid and alkali, blindly adding the agent will cause great damage to the pipeline, and cause severe fluctuations in water quality parameters such as the pH value of the circulating water. In an open system, the effect of this damage more obvious

At present, although a small number of enterprises in China have established automatic monitoring systems for circulating water quality, there are few control parameters, and the dynamic monitoring and control of scaling and corrosion in circulating water have not yet been realized, and most of the work still requires manual participation

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