Structural description of electric heating steam generator

The water supply system is the throat of the electric steam generator and provides dry steam to the user. When the water source enters the water tank, turn on the power switch. Driven by the automatic control signal, the high temperature resistant solenoid valve opens, the water pump works, and water is injected into the furnace through the one-way valve. When the solenoid valve and one-way valve are blocked or damaged, when the water supply reaches a certain pressure, it will overflow through the overpressure valve and return to the water tank to protect the water pump. When the water in the water tank is cut off or there is residual air in the water pump pipeline, only air enters and no water enters. As long as the air is quickly exhausted through the exhaust valve and the exhaust valve is closed after spraying water, the water pump can work normally. The main component of the water supply system is the water pump, most of which are multi-stage vortex pumps with higher pressure and larger flow, and a few are diaphragm pumps or vane pumps.

The liquid level controller is the central nervous system of the electric steam generator automatic control system, and is divided into electronic and mechanical types. The electronic liquid level controller controls the liquid level (that is, the height difference of the water level) through three electrode probes of different heights, thereby controlling the water supply of the water pump and the heating time of the furnace electric heating system. Stable working pressure and wide application range. The mechanical liquid level controller adopts stainless steel float type, which is suitable for generators with large furnace volumes. The working pressure is unstable, but it is easy to disassemble, clean, maintain and repair.

The furnace body is generally made of boiler seamless steel tubes, slender and vertical. Most of the electric heating tubes used in electric heating systems are composed of one or more bent stainless steel electric heating tubes, and their rated voltage is usually 380V or 220V AC. The surface load is generally about 20W/cm2. Since the pressure and temperature of the electric heating steam generator are very high during normal operation, the safety protection system can make it safe, reliable and reliable in long-term operation. Safety valves, one-way valves and exhaust valves made of high-strength copper alloy are generally used for three-level protection. Some products also add water level glass tube protection devices to increase the user’s sense of security.