Pressure Measurement on Casing Wall and Blade Rows Interaction of Contra-Rotating Axial Flow Pump  

作　　者：Toru SHIGEMITSU Tomoya TAKANO Akinori FURUKAWA Kusuo OKUMA Satoshi WATANABE 

机构地区：[1]Division of Mechanical Engineering Science Kyushu University,6-10-1Hakozaki,Higashi-ku,Fukuoka 812-8581,Japan,Division of Mechanical Engineering Science Kyushu University,6-10-1Hakozaki,Higashi-ku,Fukuoka 812-8581,Japan,Division of Mechanical Engineering Science Kyushu University,6-10-1Hakozaki,Higashi-ku,Fukuoka 812-8581,Japan,Division of Mechanical Engineering Science Kyushu University,6-10-1Hakozaki,Higashi-ku,Fukuoka 812-8581,Japan,Division of Mechanical Engineering Science Kyushu University,6-10-1Hakozaki,Higashi-ku,Fukuoka 812-8581,Japan

出　　处：《Journal of Thermal Science》2005年第2期142-149,共8页热科学学报（英文版）

摘　　要：An application of contra-rotating rotors has been proposed against a demand for developing higher specific speed axial flow pump. The blade rows interaction between front and rear rotors should be clarified for its stable operation and reduction of unsteady losses. In this paper, the static pressure distributions on casing wall are provided by measuring with the phase locked sampling method. The measurements are carried out for two types of the rear rotors with different blade number and chord length, and it is found that, for both types of rotors, the unsteady pressure fluctuations are more remarkable in the front rotor than in the rear rotor and they are caused by the rear rotor pressure field. The effects of pressure fluctuations will be discussed in more details toward understanding the blade rows interaction in the contra-rotating axial flow pump.An application of contra-rotating rotors has been proposed against a demand for developing higher specific speed axial flow pump. The blade rows interaction between front and rear rotors should be clarified for its stable operation and reduction of unsteady losses. In this paper, the static pressure distributions on casing wall are provided by measuring with the phase locked sampling method. The measurements are carried out for two types of the rear rotors with different blade number and chord length, and it is found that, for both types of rotors, the unsteady pressure fluctuations are more remarkable in the front rotor than in the rear rotor and they are caused by the rear rotor pressure field. The effects of pressure fluctuations will be discussed in more details toward understanding the blade rows interaction in the contra-rotating axial flow pump.

关 键 词：涡轮机 逆旋转转子 压力场 叶栅交感 测量方法 

分 类 号：TH312[机械工程—机械制造及自动化]