Method and device for detecting mass flow rate of pulverized coals in process of conveying pulverized coals

• Main Authors: WANG JINGDAI, SHENG XIN, HE LELU, HUANG CHENGHAO, ZHANG YOUXIANG, WANG YONGQING, YANG YONGRONG, HUANG ZHENGLIANG, ZHAO JINBO, YU SHIJIN
• Format: Patent
• Language: Chinese; English
• Published: 02.01.2013
• Subjects: MEASURING; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; METERING BY VOLUME; PHYSICS; TESTING

The invention discloses a method and device for detecting mass flow rate of pulverized coals in a process of conveying the pulverized coals. Sound waves generated by frictions and collision of fluid particles in a non-invasive pick-up pipe with a pipe wall are used to detect medium flow rate in the pipe, thereby solving the problem of large errors in a metering method of the pulverized coals, and improving the measuring accuracy. Sound wave detection is a non-invasive detection method, and a detection device is simple, safe, environmental-friendly, and is suitable for online detection in an industrial production process. A sound wave sensor array is used, and influences of unstable conveyance of the pulverized coals on the measuring accuracy can be effectively eliminated by fusing data of a plurality of sensors. Compared with the prior art, flow velocity, humidity ratio, particle size and mass flow-rate detection technologies based on the sound wave detection are more sensitive, and higher in the detection ac