Must the inlet diameter of the pump be larger than the outlet diameter? Why?
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Must the inlet diameter of the pump be larger than the outlet diameter? Why?
The pressure of the material exiting the pump must be higher than that of the material entering the pump, as this facilitates the transport of the material.
Generally, the inlet of a pump must be larger than its outlet size to facilitate the transport of the fluid
I agree with what was said on the 2nd floor: having a larger inlet pipe makes it easier for materials to enter the pump. Moreover, if the pump’s inlet pipe is too small, the resistance will be high, which can easily lead to cavitation. Making the pump’s outlet pipe smaller helps to increase pressure
The inlet pipe has a larger diameter, mainly to reduce resistance, increase static pressure, and prevent cavitation. The relatively small diameter of the outlet pipe is mainly due to considerations such as investment in pipeline equipment and requirements regarding flow velocity. Generally, export pipelines are long; larger pipelines result in lower flow rates and higher costs, and vice versa. However, there are some processes that require a high flow rate, so the pipe diameter cannot be too large; this is the case for fluids with a high solid content that tend to settle. As for some low-temperature fluids, in order to prevent static electricity, the flow rate cannot be too high, and the pipe diameter cannot be too small either.
It can prevent the accumulation of gas, which could cause cavitation.
This can reduce fluid resistance and prevent the liquid from vaporizing
Valves need to be connected at the inlet and outlet of the pump; by adjusting the opening degree of these valves, the pressure at the pump’s inlet and outlet can be controlled.
I think it’s because the pressure at the pump inlet is low, resulting in a low flow rate； The exit pressure is high and the flow velocity is high, but the volume of fluid passing through the inlet and outlet is the same; it equals the flow velocity multiplied by the cross-sectional area through which the fluid flows. Therefore, the inlet must be larger than the outlet so that the velocity at the inlet can be reduced.