Sudden fractures in rigid ceramic filter tubes hinder the stable long‐term operation of advanced power‐generation processes. In this study, variations in the dynamic pressure characteristics of the inner wall of filter and the outlet concentration with the diameter of leakage during the filtration and pulse jet cleaning process are investigated using high frequency sensors and optical particle spectrometry. The outlet concentrations measured under different leakage agreed with the theoretical values, with the peak outlet concentration being 2.5 times greater than stable outlet concentration. There is a linear relationship between leakage aperture and theoretical outlet concentration in leaking ceramic filter tubes. A positioning model that can precisely locate the leaking ceramic filter tube using the time difference in the dynamic pressure as measured by dynamic pressure sensors at different positions is established. This research can quickly and accurately determine whether a ceramic filter tube is broken and location of breakage.

中文翻译：

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基于出口浓度和动压的硬质陶瓷过滤器在线故障诊断模型

刚性陶瓷过滤管突然断裂，阻碍了先进发电过程的长期稳定运行。在这项研究中，使用高频传感器和光学粒子光谱技术研究了过滤器内壁的动压特性和出口浓度随过滤和脉冲喷射清洁过程中泄漏直径的变化。在不同泄漏下测得的出口浓度与理论值一致，峰值出口浓度比稳定出口浓度大2.5倍。在泄漏的陶瓷过滤管中，泄漏孔径与理论出口浓度之间存在线性关系。建立了一个定位模型，该模型可以使用动压力传感器在不同位置测得的动压力时间差来精确定位泄漏的陶瓷过滤管。这项研究可以快速，准确地确定陶瓷过滤管是否破裂以及破裂的位置。