No overload design method of centrifugal pump

Without overload the definition of the design method of centrifugal pump and centrifugal pump overload, just as its name implies is the pump shaft power under all use conditions are not more than supporting power of centrifugal pump. Also known as the whole lift pump, flow pump, the power curve flat pipe pump, etc. If meet the maximum shaft power matching motor power of the centrifugal pump, no overload centrifugal pump is no special design method. But in order to avoid the waste of large horse car, matching motor power and the working condition of centrifugal pump rated shaft power ratio in 1. 2 - 1. Between 3, and some of the centrifugal water pump, especially for low specific speed centrifugal pump shaft power increases with head to reduce the size of the bigger, the maximum shaft power is greater than the rated conditions shaft power of 1. Even 1 3 times. 5 times, under the working condition of low head using overload occurs while burning motor. The maximum shaft power of the centrifugal pump control in rated condition shaft power of 1. Within 2 times, to ensure that the centrifugal pump in the normal form a complete set of power under the condition of no special design method of form a complete set of motor is burnt, no overload design method of centrifugal pump. Visible, without overloading the essence of the design method of centrifugal pump is centrifugal pump of maximum power. Mainly used in the design of low specific speed centrifugal pump, the current of single stage centrifugal pump, sewage pump and multistage centrifugal pump is carried on the thorough research.

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