Study on air distribution system of 350MW supercritical boiler

3rd International Conference on Energy Engineering and Environmental Protection

能源学;生态环境科学

Jiang, Zhipeng^1^2 ; Jin, Yingai^1^2 ; Song, Zhiyu^3 ; Jiang, Weiwei^3 ; Quan, Mingyu^1^2

State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun

130022, China^1

College of Automotive Engineering, Jilin University, Changchun

130022, China^2

Jilin Province Electric Power Science Research Institute Co. Ltd, Changchun

130021, China^3

关键词: Air distribution;    Air distribution systems;    Boiler operations;    Flow distribution;    Resistance coefficients;    Similarity principle;    Supercritical boiler;    Test procedures;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/227/3/032029/pdf
DOI  :  10.1088/1755-1315/227/3/032029

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to explore the best air distribution scheme, and set up a air distribution test bench, which is according to the similarity principle, in this paper, a 350MW supercritical boiler of a power plant is taken as the research object. This test the selection of fan power and the design of bellows and air duct size is according to the similarity principle. According to the test procedure, the resistance coefficient and flow rate of the damper are measured when the single and each damper is changed. It is found that the drag coefficient and flow rate are greatly affected by the opening of the damper. When the opening of the damper changes from 15 to 30 degree, they both change dramatically. When the opening of the damper is greater than 30 degree, the change of them tends to be stable. At the same time, different locations of damper will interact with each other. The resistance coefficient curve is not only plays a guiding role in the manual control of the old equipment, but also plays a vital role in the programming of the modern automatic control of the damper. At the same time, the flow distribution law plays a guiding role in the design of the air distribution control system. The resistance coefficient curve and the flow distribution curve obtained in this paper can play a guiding role in the test design and boiler operation regulation of power plant.