Ultrasound on-line measurement of pulverized coal flow in coal-fired boilers

被引：1
|
作者：
Hou, Huai-shu [1 ]
Chen, Chao-lei [1 ]
Zhu, Bing-bing [1 ]
Yan, Zhen-rong [2 ]
机构：
[1] Shanghai Inst Technol, Shanghai, Peoples R China
[2] Shanghai Boiler Works Ltd, Shanghai, Peoples R China
来源：
MATERIALS TESTING | 2018年 / 60卷 / 03期
关键词：
Gas-solid two-phase flow; ultrasonic detection; concentration of pulverized coal; pulverized coal flow; SOLIDS;
D O I：
10.3139/120.111150
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The pulverized coal flow in the two-phase gas-solid is monitored based on the ECAH (Epstein, Carhart, Allegra, Hawley) theoretical model. The relationship between the volumetric concentration of the pulverized coal and the ultrasound attenuation coefficient is analyzed. The flow velocity and concentration of the coal particles is measured using two ultrasonic probes at an angle of 45 degrees to the flow direction. The results show that the aberration of the ultrasonic on-line measurements of the pulverized coal flow is less than 3 % compared to the coal flow set by the experimental boiler test platform. The general feasibility and reliability of the ultrasonic method of the flow measurements is verified.
引用
收藏
页码：289 / 292
页数：4
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