Approaches to Stable Operation of Shaftless Centrifugal Pump

• 来源期刊: 热科学学报（英文版）
• 年，卷（期）: 2009,（1）
• 页码范围: 48-53
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s11630-009-0048-y

摘要

The shaft-less impeller of the centrifugal pump, which is driven by the magnetic induction, was developed. The impeller rotates under the floating condition without any control device. The floating condition of the impeller is realized by utilizing the pressure in pump casing. The pump performance and the rotational behavior of the im-peUer were investigated experimentally. It has found that the floating position of the impeller become quite unsta-ble in a partial flow rate operation. And the pressure distribution at the casing wall affects the rotational posture of the impeller. This paper presents the effect of the casing treatment on the rotational posture of the impeller and the pressure distribution. The reasonable casing treatment is available for the stable rotational posture of the impeller.