A system and method for automatically adding oxygen to water supply

Abstract

The invention relates to an automatic oxygenation system for water supply, comprising an adjustable power supply, a PID control module, an oxygen generator, an oxygenation component and a unit dissolved oxygen detection part, the unit dissolved oxygen detection part is connected with the unit, and the PID control module is respectively connected with the adjustable oxygen generator The power supply and the dissolved oxygen detection part of the unit are connected, the adjustable power supply is connected with the oxygen generator, and the oxygen generator is connected with the oxygenation component. The invention also relates to a method for automatically adding oxygen to water. The PID control module controls the adjustable power supply to output the corresponding current value to the oxygen generator according to the dissolved oxygen concentration signal detected by the dissolved oxygen detector of the unit and the set target dissolved oxygen concentration signal. , the oxygen generator generates a matching amount of oxygen through electrolysis of water, and the generated oxygen is added to the feed water of the unit through the oxygenation component. The invention has the advantages of high degree of automation, precise control of oxygen addition, maintenance-free equipment, labor saving and the like.

Description

technical field

[0001] The invention belongs to the field of boiler water treatment in power plants, and in particular relates to a power plant electrolytic feedwater automatic oxygenation system and method. Background technique

[0002] For a long time, the boiler feed water treatment method in thermal power plants mostly adopts the full-volatility treatment method, that is, adding ammonia water and hydrazine to the boiler water to control the alkalinity of the boiler water. The function of hydrazine is to remove trace oxygen in the feed water at the outlet of the deaerator. , so that the feed water is in a reducing condition, and this treatment method is also called a reducing full-volatility treatment. If hydrazine is not added and a small amount of oxygen remains in the water, it is called oxidative full volatilization treatment. Under the condition of full volatilization treatment, the boiler tube is oxidized by high-temperature and high-pressure steam, and a loose str...

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