锅炉技术2026，Vol.57Issue(4)：22-27,61,7.
基于CFD的燃煤锅炉水冷壁炉内壁温直接测量装置研究
Research on CFD-Based Direct Measurement Device for Tube Inside Temperature of Water-Cooled Wall in Coal-Fired Boilers
万人滔 1钱朝明 1施子福2
作者信息
- 1. 国能浙江宁海发电有限公司,浙江宁波 315612
- 2. 浙江大学热能工程研究所,浙江 杭州 310027
- 折叠
摘要
Abstract
In response to the difficulty in accurately measuring the tube temperature of the water-cooled wall of coal-fired boilers,and to improve the accuracy of temperature measure-ment of the temperature measurement device,a numerical simulation method is used to study the impact of the thickness of the collector block in the furnace,furnace temperature,and working fluid temperature inside the water-cooled wall tube on temperature measurement errors,and the simulation results were verified by field tests.The results show that the thicker the collector block,the smaller the measurement error.Taking into account the measurement error,convenience of thermocouple installation,processing and manufacturing costs,as well as the wear caused by dust in the furnace during actual operation,it is believed that the thickness of the collector block is optimal when it is 50％of the outer tube radius of the water-cooled wall.When the furnace temperature increases from 1 250 ℃ to 1 450 ℃,and the measurement error decreases from 24.9 ℃ to 12.9 ℃,with a decrease of about 50％;The temperature at the measurement end of the thermocouple and the temperature at the top of the water-cooled wall tube have the same trend as the temperature change of the working fluid inside the water-cooled wall.Since the working fluid cools the measure-ment end of the thermocouple and the water-cooled wall tube simultaneously,the measurement error changes little.关键词
水冷壁壁温/集热块/数值模拟Key words
water cooled wall temperature/collector block/numerical simulation分类
能源科技引用本文复制引用
万人滔,钱朝明,施子福..基于CFD的燃煤锅炉水冷壁炉内壁温直接测量装置研究[J].锅炉技术,2026,57(4):22-27,61,7.
