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US 6,471,468 B1Granted
Compensator
AssigneeKSB Aktiengesellschaft
InventorHarald Hartmann
Life of this patent
Estimating the term…
Abstract
The invention relates to a compensator modular unit for a multistage pump housing, ensuring as compensation device during hot or cold temperature shocks compensation of changes in length caused by said shocks.
Claims7
A multistage centrifugal pump comprising a pump housing with an inlet and an outlet;
- a plurality of stage housings arranged within the pump housing, each stage housing having an impeller and a guide vane system;
- a pump shaft which together with the stage housings forms a withdrawable pump unit, and a compensation device comprising a plurality of multi-element compensator modules arranged in said pump housing between the pump housing and the withdrawable pump unit or within the withdrawable pump unit arranged to compensate for changes in axial length of the withdrawable pump unit;
- wherein each of the compensator modules has a plurality of elastically resilient compensator elements, and wherein the elastically resilient compensator elements are disk springs.
Dependencies are inferred from the claim text.