An adjustable voltage electrode type water heating equipment

Abstract

The invention is an adjustable voltage electrode type water heating equipment. The zero electrode includes a circular steel plate and three steel pipe sleeves fixed to the circular steel plate uniformly distributed in the circumferential direction. The upper and lower ends of the steel pipe sleeve are open and the lower The port is flush with the circular steel plate; the circular steel plate is connected to the inner wall of the tank through an annular insulating member; the upper cavity is connected with a vacuum pump to maintain the upper cavity in a vacuum state; the lower end of the insulated electrode is connected with a phase electrode; three Each phase electrode is located in the three steel pipe sleeves, and there is a gap between the phase electrodes and the steel pipe sleeve; the conductive core of the insulated electrode is connected with a thyristor voltage regulator for adjusting the input voltage; the thyristor voltage regulator A filter is connected to filter out higher harmonics. The equipment volume and overall cost are reduced; the equipment load adjustment stability and safety performance are improved, and the load adjustment rate is guaranteed; the amount of inorganic salt used as electrolyte is reduced, thereby reducing pollution.

Description

technical field [0001] The invention relates to a high-voltage adjustable voltage electrode type water heating equipment, and the applicable voltage includes but not limited to 6KV and 10KV. Background technique [0002] One of the technical routes adopted by the existing adjustable voltage electrode water heating equipment is the full immersion type, that is, the heating electrodes are all immersed in the conductive medium water, and the phase electrode and the zero electrode conduct electricity through the medium water in the middle, thereby heating the medium water. A protective shield is set between the phase electrode and the zero electrode, and the conductive area of ​​the medium water is changed through the lifting and lowering of the protective shield, thereby changing the heating power and controlling the temperature of the hot water outlet. The protective shield works in a high-temperature environment of about 100°C, and at the same time it must withstand a high vo...

AI Technical Summary

Problems solved by technology

The semi-submerged type uses a water pump to pump the medium water into the inner tank. The water level is prone to fluctuations. The submerged parts of the three electrodes are inconsistent, resulting in unbalanced three-phase loads. In severe cases, it may cause the protection trip of the high-voltage switchgear; at the same time, the fluctuation of the water level will also cause load fluctuations. , affecting the quality of the power grid; the water level adjustment has hysteresis, which affects the power adjustment rate; the fluctuating water splash may also form arc discharge, which affects safety performance

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