Thermal power plant boiler air supply auxiliary heating device and using method thereof

Abstract

The invention relates to a thermal power plant boiler air supply auxiliary heating device, which comprises an air conveying pipeline connected with a boiler, an air feeder and an air preheater are sequentially connected to the air conveying pipeline, and a first switch valve and a second switch valve are connected to the positions, on the two sides of the air preheater, of the air conveying pipeline respectively; and an air inlet pipeline is connected to the air conveying pipeline between the first switch valve and the air feeder, and an air outlet pipeline is connected to the air conveying pipeline between the second switch valve and the boiler. A heating mechanism is arranged to play a role in substitution and compensation for the air preheater, normal supply of cold air can be ensured when the air preheater breaks down, and auxiliary heating can be carried out under the condition that the air preheater cannot meet the requirement for the temperature of the boiler, so that the air temperature meets the requirement.

Description

technical field [0001] The invention relates to a temperature raising device, in particular to an auxiliary air supply temperature raising device for a thermal power plant boiler and a method for using the same. Background technique [0002] Thermal power plants, referred to as thermal power plants, are factories that use combustibles (such as coal) as fuel to produce electricity. Its basic production process is: when the fuel is burned, the water is heated to generate steam, the chemical energy of the fuel is converted into thermal energy, the steam pressure drives the steam turbine to rotate, the thermal energy is converted into mechanical energy, and then the steam turbine drives the generator to rotate, converting the mechanical energy into electrical energy. [0003] In the process of thermal power generation, the cold air fed into the boiler needs to be heated up by the air preheater in advance. In the production process, sometimes there is an air preheater failure and...

AI Technical Summary

Problems solved by technology

[0003] In the process of thermal power generation, the cold air fed into the boiler needs to be heated up through the air preheater in advance. During the production process, sometimes there is an air preheater failure and the supply of cold air needs to be stopped or the power consumption of the air preheater is limited to heat the air. The case where the output cannot meet the boiler temperature needs

Images