Electric system and centrifugal pump thereof

• Main Authors: JI CHUNJUN, LIU HONGLIANG, CHEN XI
• Format: Patent
• Language: English
• Published: 09.12.2015
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model discloses a centrifugal pump, including impeller, stator and spiral case, the export of impeller and the entry of stator intercommunication, stator include runner width contraction section that communicates with the impeller export and the stator back end that communicates with the export of runner width contraction section, the shrink position of runner width contraction section is located the rim plate side of impeller and the shrouding disc side of impeller respectively, the stator back end is a straight pipeline. In the above -mentioned centrifugal pump, be provided with a runner width contraction section at the stator entry, this runner width contraction section has formed the shrink of runner in the entrance of stator, forms in the same direction as pressing the gradient at the local of shrink, can make the comparatively smooth and easy inflow stator of fluid to partial adverse pressure gradient can not be too big after having guaranteed runner width contraction section, avoids the too big fluid separation that arouses of adverse pressure gradient, thus the vibration and noise who has avoided flow losses and aroused from this. The utility model also discloses an including the electric system of above -mentioned centrifugal pump, this electric system power consumption of is low, efficient.