Patent · US Active

Modular thrust-compensating rotor assembly

US10641264B2 · kind B2 · utility

0Cited by

5References

19Claims

0Family size

Assignee

CIRCOR PUMPS NORTH AMERICA, LLC · US

Inventors

Helmut Engelmann · Radolfzell, DE
Stefan Werner · Halle (Saale), DE
Yongchun Ma · Radolfzell, DE
Jurgen Broders · Radolfzell, DE

Key dates

Filing date	May 11, 2016
Grant date	May 5, 2020
Priority date	—
Expiry date	Nov 26, 2036

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04C2240/56
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A modular rotor assembly for a screw pump including a power rotor and an idler rotor having respective first ends adapted to be disposed in a suction side of the screw pump and respective second ends adapted to be disposed in a discharge side of the screw pump, the power rotor including a balance piston adapted to be disposed within a pump housing of the screw pump with a radial clearance between an entire circumference of the balance piston and the pump housing is in a range between 1 micron and 200 microns, wherein the power rotor is provided with a tapered bearing surface configured to define a wedge-shaped, radial gap axially intermediate the power rotor and the idler rotor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.