串联分离滴灌用黄河水试验研究  

Experimental Study on Machines Arranged in Series for Separating Yellow River's Silt for Agricultural Drop Irrigation

作　　者：孙步功[1] 吴建民[1] 赵武云[1] 龚俊[2] 

机构地区：[1]甘肃农业大学工学院,兰州730070 [2]兰州理工大学机电工程学院,兰州730050

出　　处：《灌溉排水学报》2009年第5期106-108,127,共4页Journal of Irrigation and Drainage

基　　金：国家863计划项目(2002AA2Z4191);国家科技支撑计划项目(2006BAD15B06)

摘　　要：针对西北地区黄河流域农业滴灌中黄河水泥沙含量高的问题,设计了碟式分离机,选用了LW-380E型卧螺离心机和FXJ-150-I型水力旋流器,将卧螺离心机、碟式分离机和水力旋流器顺次串联进行黄河水泥沙分离。通过三因素二次正交旋转回归试验设计,考察了卧螺离心机差转速、碟式分离机喷嘴直径以及旋流器旋流入口压力对黄河水泥沙分离效率的影响,得出分离效率与影响因素的回归模型。通过方差和效应分析得出:旋流入口压力和差转速对分离效率的影响极显著,喷嘴直径对分离效率的影响显著;水平优化表明,黄河水泥沙分离的最佳参数是旋流入口压力为1.2 MPa,差转速为9.4 r/min,喷嘴直径为0.8 mm。Aimed at the problem of separation Yellow River silt for agricultural drop irrigation, the dish separator is designed, the LW-380E horizontal screw centrifuge and the FXJ-150-1 hydrocyclone are cho sen. The centrifuge, separator and hydrocyclone are arranged in series for separating Yellow River＇s silt. Separation efficiency was selected as experimental target, with three-factor quadric orthogonal regression composite experimental design, the influences of inlet pressure, rotation speed disparity between drum and shaft of horizontal screw centrifuge, nozzle diameter were investigated. A regression equation with high reliability was obtained. Results by variance and effect analysis show that inlet pressure and nozzle diameter have very significant influence on separation efficiency （p〈0.01）, rotation speed disparity between drum and shaft of horizontal screw centrifuge has significant influence （p〈0.05）. Results by factor level analysis show that the optimum technology parameters are 1.2 MPa of inlet pressure, 9.4 r/min of rotation speed disparity between drum and shaft of horizontal screw centrifuge, 0.8 mm of nozzle diameter.

关 键 词：滴灌 黄河泥沙 串联分离 正交回归试验 

分 类 号：TV14[水利工程—水力学及河流动力学]