Inlet and outlet positions of the centrifugal pump
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Centrifugal pumps come in various configurations for their inlet and outlet ports: end-suction top discharge, end-suction side discharge, side inlet (which is essentially also end-suction) top discharge, top inlet top discharge, etc. What factors determine the location of these inlet and outlet ports, and how are they decided? If you have any specific relevant information, I would be very grateful if you could share it or provide it. Thank you so much!
The inlet always flows to the center of the impeller through an internal channel.
It mainly depends on operating conditions, application areas, device requirements, and so on
Which operating conditions, application areas, or devices correspond to which inlet and outlet positions?
Which operating conditions, application areas, or devices correspond to which inlet and outlet positions?
It is recommended to check API610; you can download a Chinese version of it from the Internet.
Search on the forum; Yu Gong has answered similar questions before
API610 classifies pumps into cantilever pumps, double-supported pumps, and suspended pumps. Cantilever pumps are all radially split pumps; the most commonly used ones among us are OH2 pumps, with fluid intake at one end and discharge at the other ； Pumps with support at both ends: BB1 (axial split) (inlet and outlet on the side), BB2 (radial split) (inlet and outlet at the top), BB3 (axial split) (inlet and outlet on the side), BB4 (radial split, not in compliance with API standards), and BB5 pumps (available in both radial and axial split designs with core separation) (inlet and outlet at the top) ； Most suspended pumps use VS4 pumps. For cantilever pumps, the impeller diameter is generally not allowed to exceed 380 mm ； For pumps supported at both ends, in engineering practice, the BB5 pump is typically selected when the maximum allowable pressure of the pump exceeds 4 MPa (for pumps handling toxic, flammable, or light hydrocarbon media, excluding water pumps).