| 摘要 |
<p>A single-stage, overhung centrifugal process pump (10) incorporates a low-flow auxiliary impeller (36) which receives intake liquid from the discharge (16) of the primary impeller (20). This feature saves energy by significantly reducing the pump horsepower requirements when the pump is sized for two or more process conditions, with one discharge flowstream at a higher-head and lower-flow than the other. This feature allows the pump to separate the inlet flow into a primary high-flow, low-head discharge and a secondary lower-flow, higher-head discharge (48). The pump is effectively two pumps in one with each impeller selected for the discrete process requirements of the different flowstreams.</p> |
