Automatic water replenishing equipment for steam boiler

Abstract

The invention discloses automatic water replenishing equipment for a steam boiler. The automatic water replenishing equipment comprises a boiler and a water replenishing tank; a water replenishing pipe communicates between the water replenishing tank and the boiler; one end of the water replenishing pipe is provided with a water pump and a cavity while the other end of the water replenishing pipeis provided with a spiral coil pipe; a sealing plate is movably clamped in the cavity; the sealing plate is provided with an adjusting hole; the side wall of the boiler is provided with an adjusting component for controlling the size of an adjusting hole channel on the sealing plate; a preheating box is wrapped outside the spiral coil pipe; an auxiliary steam pipe in communication with the boileris arranged at the upper end of the preheating box; and a return pipe communicates between the bottom of the preheating box and the water replenishing box. According to the automatic water replenishing equipment for the steam boiler, dynamic water replenishing can be realized, the water level in the boiler is always kept at a stable position, and the fluctuation of the water level in the boiler issmall, so that stable heat supply of the steam is ensured; and in the water replenishing process, the steam in the boiler is used for preheating the cold water in the water replenishing pipe, so thatthe rapid reduction of the water temperature caused by the fact that the cold water directly enters the boiler is avoided, and the steam supply interruption or steam pressure fluctuation is avoided.

Description

technical field [0001] The invention relates to the technical field of steam boilers, in particular to automatic water replenishment equipment for steam boilers. Background technique [0002] Steam boilers are industrial boilers that produce high-temperature steam. Most steam boilers used in factories use coal as fuel. The heat generated by coal combustion converts water in the boiler into steam. As water is continuously converted into steam, the water level in the boiler decreases. , the boiler needs to be supplemented with water. [0003] At present, the automatic water replenishment device of the existing steam boiler is usually composed of an electric control device and a water replenishment pump. When the water volume of the boiler hot water circulation system decreases, the electric control device sends a signal to start the replenishment pump to replenish water to the boiler. When the water volume is replenished to the set value, the electric control device sends out...

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Problems solved by technology

When the water volume reaches the set value, the electronic control device sends a signal to turn off the water supply pump and stop the water supply, which will cause large fluctuations in the water level in the boiler, resulting in unstable steam quality, and due to the complex structure of the electric control device, causing The water supply equipment is expensive, which increases the operation and maintenance costs of the boiler; in addition, because this device directly adds cold water to the boiler, the water temperature in the boiler will drop sharply, which will easily cause steam supply cut-off or steam pressure fluctuations, affecting the operation of the boiler. Continuity, difficult to meet the needs of industrial production

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