Abstract External air injected into a gas turbine contains many solid particles, which can reduce the performance and life of the turbine. In this study, a louver dust collector, which is a type of inertial dust collector, was used to remove solid particles from air, and the shape of the dust container, which is part of the louver dust collector, was modified to improve dust collection efficiency. As existing dust containers have a structure for isolating particles, the inflow of the air into the dust containers is limited and effective removal of particles is difficult. In this study, slits were drilled in the dust container, baffle plates were used, and raised spots were added to improve particle collection efficiency through improved air flow in the dust container and increased inertia effect of the particles. The trajectory of the particles and the collection efficiency for each dust container shape were predicted using numerical analysis and the numerical analysis results were verified using a wind tunnel test. Results indicate that for an air flow rate of 3 m3/min, the collection efficiencies of the louver dust collectors with the one-slit model dust container and two-slit model dust container improved by 40.1% and 43.5%, respectively compared with that of the louver dust collector with the existing dust container. Furthermore, for an air flow rate of 6 m3/min, the collection efficiencies of the louver dust collectors with the one-slit model dust container and two-slit model dust container improved by 32.9% and 37.6%, respectively, compared with that of the louver dust collector with the existing dust container. Therefore, it is expected that the particle collection efficiency of the existing louver dust collector can be effectively increased by utilizing the shape of the dust container proposed in this study.

中文翻译：

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改进型集尘容器提高百叶除尘器效率

摘要 注入燃气轮机的外部空气中含有许多固体颗粒，会降低燃气轮机的性能和寿命。在这项研究中，百叶窗集尘器是一种惯性集尘器，用于去除空气中的固体颗粒，并且对作为百叶窗集尘器一部分的集尘容器的形状进行了改进以提高集尘效果效率。由于现有的集尘容器具有用于隔离颗粒的结构，因此进入集尘容器的空气受到限制并且难以有效去除颗粒。在这项研究中，在集尘容器中钻出狭缝，使用挡板，并增加了凸起点，通过改善集尘容器中的气流和增加颗粒的惯性效应来提高颗粒收集效率。使用数值分析预测颗粒的轨迹和每种灰尘容器形状的收集效率，并使用风洞试验验证数值分析结果。结果表明，当空气流量为3 m3/min时，单缝模型集尘器和双缝模型集尘器的百叶集尘器的收集效率分别提高了40.1%和43.5%。百叶窗式除尘器与现有的集尘器。此外，在风量为6 m3/min的情况下，单缝型集尘器和双缝型集尘器的百叶集尘器的集尘效率分别提高了32.9%和37.6%。百叶窗式除尘器与现有的集尘器。所以，