The working principle of multistage centrifugal pump is the same as the ground centrifugal pump. When the impeller on the motor driven shaft rotates at a high speed, the liquid filled in the impeller is thrown to the impeller from the center of the impeller along the flow path between the blades by the centrifugal force Around, due to the role of the liquid by the leaves, so that the pressure and speed increase at the same time, through the guide flow channel leads to the next level of the impeller, is the principle of successive flow through all the impeller and guide shell, and further to the liquid The pressure energy increases. After stacking each impeller step by step, a certain lift is obtained and the downhole liquid is lifted to the ground.
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