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m3/h)范围内,h/b=1.0时离心泵的扬程,效率远比其他h/b时的低. 图3 不同导叶叶高对离心泵外特性影响 Fig. 3 Influence of different guide vane heights on external characteristics of centrifugal pump 图4所示为不同流量,不同导叶叶高时监测点P3和P4的压力脉动系数随时间的变化曲线.由图4可见....当叶轮压力面尾缘逐渐接近导叶前缘时,径向速度逐渐增大,动静干涉作用对导叶内流场影响不可忽略. 参考文献: [1] CHALGHOUM I, ELAOUD S, AKROUT M, et al. Transient behavior of a centrifugal pump during starting period[J]. Applied Acoustics, 2016, 109......
; 文章编号:1672-7207(2009)03-0706-05 Fault diagnosis of centrifugal compressor vibration based on wavelet power spectrum and rough set theory ZENG Qing-sheng, WANG..., and rough set was used to build the simpler knowledge base of intelligent fault diagnosis system. A new fault diagnosis method on centrifugal compressor vibration based on wavelet power spectrum......
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J. Cent. South Univ. (2018) 25: 2733-2753 DOI: https://doi.org/10.1007/s11771-018-3950-1 Noise comparison of centrifugal pump operating in pump and turbine mode DONG Liang(董亮)1, DAI Cui(代翠)2, 3... and Springer-Verlag GmbH Germany, part of Springer Nature 2018 Abstract: Investigations regarding the relation of noise performance for centrifugal pump operating in pump and turbine modes continue......
by centrifugal casting LIN Xue-dong1, Xun-jia2, LIU Chang-ming3 (1. College of Mechanical Engineering, Chongqing Vocational Institute of Engineering, Chongqing 400037, China; 2. Xuzhou Construction... tubes were prepared under different conditions by centrifugal casting. Along the radial direction and the direction perpendicular to the axial direction of the castings, the microstructure......
; centrifugal casting; WC/ steel matrix composite; microstructure; carbide; WC particles; [全文内容正在添加中] ......
利用离心喷雾干燥制备球形粉体的工艺因素研究 王慧1,钟余发1,程小苏1,刘平安1,税安泽1,曾令可1 (1.华南理工大学材料科学与工程学院,广州,510640) 摘要:研究了铝矾土料浆的离心喷雾造粒过程,考察了料浆固含量,粘度,喷雾头的旋转速度对粉体干燥的影响.从颗粒内部水分迁移的距离,空气进出口温度两方面,分析了蘑菇头颗粒,变形颗粒,球形颗粒和破裂颗粒等颗粒形貌的形成原因,并优化了一组工艺参数:喷雾头转速为12000r/min,料浆固含量为50%,热风入口温度为300℃,废气出口温度为115℃,塔内负压为-350Pa,料浆流速为4L/h,料浆的粘度为14s,在此条件下能制备出球形度高,颗粒粒径集中分布在55μm左右的粉体. 关键词:离心喷雾干燥; 工艺因素; 粒度分布; 球形度; centrifugal spray drying; process factors......
转方向; 旋转半径; vertical centrifugal casting; filling sequence; rotational direction; rotational radius; [全文内容正在添加中] ......
nappe structure was studied comprehensively using geomechanics, fault mechanics, elastic mechanics, and Coulomb’s law of friction. First, using the centrifugal inertia force of Earth’s rotation...; thrust nappe structure; centrifugal inertia force; fault mechanics; slip-line field theory; Coulomb’s law of friction......
; 文章编号:1672-7207(2008)06-1257-05 Recovery of iron from fine iron tailings by continuous centrifugal concentration CHEN Lu-zheng1, XIONG Da-he2, REN Nan-qi1, ZHAO Xin1 (1. State Key Laboratory... centrifugal concentrator (SLon pilot centrifugal concentrator) was used to study the effects of drum rotation speed and reciprocating velocity of water sprays on the separation performance......
