US 12,361,189 B2
Method, apparatus and device for predicting wall temperature deviation of high-temperature heating surface tube panel of boiler
Debo Li, Guangdong (CN); Zhihao Chen, Guangdong (CN); Zhaoli Chen, Guangdong (CN); Jinghui Song, Guangdong (CN); and Yongxin Feng, Guangdong (CN)
Assigned to CHINA SOUTHERN POWER GRID TECHNOLOGY CO., LTD., Guangzhou (CN)
Appl. No. 18/039,217
Filed by CHINA SOUTHERN POWER GRID TECHNOLOGY CO., LTD., Guangdong (CN)
PCT Filed Mar. 14, 2022, PCT No. PCT/CN2022/080606
§ 371(c)(1), (2) Date May 26, 2023,
PCT Pub. No. WO2022/199409, PCT Pub. Date Sep. 29, 2022.
Claims priority of application No. 202110321457.2 (CN), filed on Mar. 25, 2021.
Prior Publication US 2023/0419004 A1, Dec. 28, 2023
Int. Cl. G06F 30/28 (2020.01)
CPC G06F 30/28 (2020.01) 10 Claims
OG exemplary drawing
 
1. A method for predicting a wall temperature deviation of a high temperature heating surface tube panel of a boiler, applied to a combustion system of a coal-fired generating unit, wherein the method comprises:
obtaining operation data of the combustion system of the coal-fired generating unit; and selecting, from the operation data, data affecting the wall temperature deviation of the high temperature heating surface tube panel of the boiler, as factor data;
establishing a three-dimensional boiler simulation model in CFD software according to the factor data and a structure of the boiler, and calculating swirl intensity at a furnace outlet of the boiler using a swirl momentum moment formula in the boiler simulation model;
calculating a wall temperature deviation coefficient of the high temperature heating surface tube panel of the boiler using a wall temperature deviation coefficient formula in the boiler simulation model;
performing a quadratic fit on the swirl intensity and the wall temperature deviation coefficient, to obtain a predicting model of the wall temperature deviation of the high temperature heating surface tube panel of the boiler;
using the factor data and the swirl intensity of the boiler as an input of the predicting model, and obtaining an output of the predicting model as the wall temperature deviation of the high temperature heating surface tube panel of the boiler; and
controlling an operation of the combustion system of the coal-fired generating unit based on the wall temperature deviation of the high temperature heating surface tube panel of the boiler, to avoid an overtemperature on a tube wall of the boiler.