Karapuzova M. Hydrodynamic design features combined suction chamber centrifugal pump

Candidate Paper performs research results of operating process at centrifugal pump suction chamber. Centrifugal pump suction chamber designing has been systematized due to the hydro-mechanical features of operating process. Mathematical (designing) model of suction chamber has been proposed, suction chamber separations a separate module has been approved for bloke-module designing. The basic content of the Paper is flow structure analyze at the area "outlet of the suction chamber-impeller inlet" and studying influence of the flow velocity moment at impeller inlet on the pump characteristics. Suction chamber of a new type has been developed - combined suction chamber, which allows creating predictable flow structure at impeller inlet. Developed design of the combined suction chamber is protected and confirmed with Declarative Patent of Ukraine for the "Useful Model". Use of a combined suction chamber of metal supply will reduce pumping equipment by 10-15%, reduce vibration by 15-20%, and increase the level of harmonization of lead devices centrifugal pumps, thus reducing the cost of manufacture. To ensure the most effective impeller operating process we should design vane diffuser, which would create required flow velocity torque at impeller inlets. Designing procedure for suction case of combined type has been developed.