CAJ | 학술논문

在很多工业生产过程的气固两相流动中，固体颗粒多以簇团的形式存在，而在目前已投产运行的流化床设备中，能够有效获取床内簇团特性的设备尚较少见。使用动量探头在一循环流化床锅炉冷态试验台上，以玻璃微珠为床料，采集了炉内不同空间位置不同工况下的簇团压力波动信号，并对信号进行滤波处理，得到相应周期内的簇团频率。通过试验证实了基于簇团频率测量的动量探头能够有效获取炉内簇团运动特性，从而了解床内流化状态的改变、床内磨损状态、床内物料量变化等信息。该方法正确反映了炉内工况的变化，并可直接用于实炉热态测量，为设备安全稳定运行提供了参考。
재흔다공업생산과정적기고량상류동중，고체과립다이족단적형식존재，이재목전이투산운행적류화상설비중，능구유효획취상내족단특성적설비상교소견。사용동량탐두재일순배류화상과로랭태시험태상，이파리미주위상료，채집료로내불동공간위치불동공황하적족단압력파동신호，병대신호진행려파처리，득도상응주기내적족단빈솔。통과시험증실료기우족단빈솔측량적동량탐두능구유효획취로내족단운동특성，종이료해상내류화상태적개변、상내마손상태、상내물료량변화등신식。해방법정학반영료로내공황적변화，병가직접용우실로열태측량，위설비안전은정운행제공료삼고。
There are many particle clusters in various industrial processes and they have an important impact on the gas -solid flow .But the device which can effectively get clusters characteristic in the real boiler is still rare currently .In this pa-per the momentum probe is used to carry out the experiment of clusters frequency in cold test set of CFB ,in which the pres-sure fluctuation signals of clusters in the boiler under different conditions and places are collected ,the signals are filtered and the frequencies of clusters in corresponding circle are found .According to the frequency characteristics of clusters we can know the change of flow state ,bed wear state and the quantity of solids in the bed .The experiment confirms that the momentum probe based on clusters frequency measurement can correctly reflect furnace conditions and be used for hot mea-surement of real boiler .This measurement technique has good application prospects .