A deionized water automatic replenishment device for sfc cooling system

Abstract

The invention provides an automatic deionized water supply device for a cooling system of an SFC (static frequency converter). The automatic deionized water supply device comprises a support assembly, a deionized water preparation unit, a deionized water supplementing unit and a control unit, wherein the deionized water preparation unit comprises a deionizing pump, a resin deionizing bottle, a conductivity measuring sensor, a valve A, a circulating pipe, a water storage tank and a data display instrument with upper limit and lower limit alarming functions, the water storage tank, the deionizing pump and the resin deionizing bottle are communicated sequentially through the circulating pipe to constitute a deionized water preparation loop, the data display instrument is electrically connected with the conductivity measuring sensor which is mounted on the water storage tank, and the valve A is mounted on the circulating pipe; the deionized water supplementing unit comprises a submersible pump, a valve B, a check valve and a supply pipe, and the supply pipe, the submersible pump and the water storage tank are communicated sequentially. The automatic deionized water supply device has automatic deionized water preparation and supplementation functions, trouble in manual water supplementation is avoided, the working efficiency is increased, and the deionized water preparation process is simple, practical and efficient.

Description

technical field [0001] The invention relates to an automatic replenishment device for deionized water in an SFC cooling system, belonging to the technical field of hydroelectric power generation systems. Background technique [0002] The SFC system (static frequency converter) is the core equipment of the pumped storage power station, and the thyristor is the core equipment for the unit to realize the pumping condition. Thyristors generate a lot of heat during operation, and deionized water is usually used for cooling. If the heat dissipation is not good, it will cause pulse blocking and affect the normal start of the unit. Therefore, the SFC cooling system is an important guarantee for the safe and stable operation of thyristors. With the long-term operation of the SFC system, the water in the cooling system will evaporate and leak, the conductivity of the deionized water will increase, and the water pressure will decrease. At this time, it is necessary to replenish deioniz...

AI Technical Summary

Problems solved by technology

Due to the complex and cumbersome preparation process of deionized water, in most cases, pumped storage power stations often obtain deionized water through direct purchase or using distilled water as a substitute

The above two methods have the following problems: 1. Purchase from outside, the purchase cycle is long, the deionized water after purchase is not easy to store, and the quality will decline; 2. Impurity ions in distilled water will cause electrical corrosion under high voltage, affecting the cooling effect ;3. Directly adding distilled water increases the burden on the deionized circuit of the cooling system in the SFC system, reducing the life of the equipment in the original circuit; 4. Does not have the deionized water replenishment function of the cooling system circuit

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