Multi-stage barrel type centrifugal pump with resilient compensator means for maintaining the seals between interstage pumping assemblies
US4244675A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1979 |
| Grant date | Jan 13, 1981 |
| Priority date | — |
| Expiry date | Apr 30, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D1/066
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A compensator for differential thermal expansion in a multi-stage barrel type centrifugal pump has a truncated conical body section and a plurality of leaf springs extending radially from said body section, the compensator is disposed in the multi-stage barrel type centrifugal pump between the outer casing and the end most interstage pumping assembly of a plurality of serially disposed interstage pumping assemblies in the centrifugal pump so that it is biased by the leaf springs to exert a controlled force in the direction of the end most interstage pumping assembly to permit movement between the serially disposed interstage pumping assemblies with variations in temperature arising during the operation of the centrifugal pump while continuing to maintain a tight seal between these respective interstage pumping assemblies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.