The characteristic of the centrifugal pump is that the liquid feeding capacity is large and the flow rate is uniform, but the generated indenter is not high, and the indenter changes with the change of the flow rate.
First, the type of centrifugal pump can be divided into: according to the nature of the liquid being transported:
(1) Water pump (ISG type pipeline centrifugal pump, GDL type multistage pump, ZX type self-priming pump) is used to transport clean water and clean liquid with physical and chemical properties similar to water.
(2) Corrosion-resistant pumps (FY type) are used to transport corrosive liquids such as acids and alkalis.
(3) Oil pump (YG type oil pump, ISWB type horizontal oil pump) is used to transport petroleum products.
Second, the selection of centrifugal pump (1) according to the nature of the liquid being transported and operating conditions to determine the type;
(2) Determine the type of pump (selected from the sample or catalogue) based on the flow rate (generally determined by the production task) and the required pressure head in the pipeline;
(3) If the viscosity and density of the liquid to be transported are significantly different from the water, the characteristic parameters of the pump should be accounted for: flow, head and shaft power.
When selecting a centrifugal pump, there may be several types of pumps that meet the requirements of operating in the range of Zui. In this case, the working points of each pump can be determined separately, and the efficiency at the working point can be compared.
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