Steam generator and method for controlling generation of water scale in steam generator

Abstract

The invention relates to a steam generator. The steam generator comprises a steam generator body. The steam generator body comprises a heat conducting shell and a heating body located below the heat conducting shell. A cold water inlet is formed in the lower portion of one side of the heat conducting shell, a steam outlet is formed in the top end of the heat conducting shell, the cold water inletis connected with a corresponding cold water box through a pipeline, the steam outlet is connected with a cavity of a steam furnace through an air guide pipe, two heating connecting ends of the heating body are connected with corresponding power supply devices, the bottom of the heat conducting shell is inclined, the lowest end of the bottom of the heat conducting shell is connected with a water drainage pipe capable of draining residual water, and a temperature sensor capable of detecting the internal temperature of the heat conducting shell in real time and controlling the internal temperature of the steam generator body within a preset range during water drainage is arranged in the heat conducting shell. The invention further discloses a method for controlling generation of water scalein the steam generator. Generation of the water scale can be effectively controlled.

Description

technical field [0001] The invention relates to the technical field of steam heating, in particular to a steam generator and a method for controlling scale generation in a steam generator. Background technique [0002] A steam generator is a mechanical device that uses heat energy from fuel or other energy sources to heat water into hot water or steam, and is an important part of a steam power plant. The operation of the steam generator is inseparable from water. Due to the deterioration of water quality in my country and the long-term operation of the steam generator, scaling is inevitable. Once the scale is formed, it will lead to poor heat transfer of the steam generator. The thermal efficiency of the steam generator will be reduced; the scale may also cause the furnace tube to bulge and explode; the poor heat transfer will increase the operating cost and reduce the service life of the steam generator. At present, the steam generator is prone to scale problems mainly as fo...

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Problems solved by technology

The operation of the steam generator is inseparable from water. Due to the deterioration of water quality in my country and the long-term operation of the steam generator, scaling is inevitable. Once the scale is formed, it will lead to poor heat transfer of the steam generator. The thermal efficiency of the steam generator will be reduced; the scale may also cause the furnace tube to bulge and explode; the poor heat transfer will increase the operating cost and reduce the service life of the steam generator. At present, the steam generator is prone to scale problems mainly as follows A few: 1. The interior of the heating part of the steam generator is too long to drain the excess water, resulting in water remaining inside, resulting in scale on the surface of the heating tube or the bottom of the heater; 2. Another main reason for the formation of scale is : Scale is generally produced when the water temperature is 55-60 degrees. If the maximum outlet temperature of heating and hot water equipment is 60 degrees, it is generally not suitable for scaling. Therefore, it is necessary to control the temperature of scale generation, so it needs to be improved

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