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approaches to stable operation of shaftless centrifugal pump
Author(s): 
Pages: 48-53
Year: Issue:  1
Journal: Journal of Thermal Science

Keyword:  Centrifugal pump Impeller Magnetic induction Casing treatment Passive control;
Abstract: <正> The shaft-less impeller of the centrifugal pump, which is driven by the magnetic induction, was developed. Theimpeller rotates under the floating condition without any control device. The floating condition of the impeller isrealized by utilizing the pressure in pump casing. The pump performance and the rotational behavior of the impellerwere investigated experimentally. It has found that the floating position of the impeller become quite unstablein a partial flow rate operation. And the pressure distribution at the casing wall affects the rotational posture ofthe impeller. This paper presents the effect of the casing treatment on the rotational posture of the impeller and thepressure distribution. The reasonable casing treatment is available for the stable rotational posture of the impeller.
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