초록

The electric motor pump is able to operate as a reverse running pump in the turbine mode, whereby the electric motor is an induction motor operating as an induction generator.

대표청구항 ▼

[ What is claimed is:] [1.]1. An electric motor pump for corrosive, electric conductive, cryogenic and/or hazardous liquids which is submerged in the liquid, comprising:(a) a rotating pump shaft mounted in two bearings in a pump housing with one or more centrifugal pump impellers;(b) a rotating moto

[ What is claimed is:] [1.]1. An electric motor pump for corrosive, electric conductive, cryogenic and/or hazardous liquids which is submerged in the liquid, comprising:(a) a rotating pump shaft mounted in two bearings in a pump housing with one or more centrifugal pump impellers;(b) a rotating motor shaft mounted in two bearings in a motor housing with an electric motor rotor;(c) an electric motor stator mounted in said motor housing;(d) a magnetic coupling with two matching rotating parts, one rotating part mounted on said pump shaft and one rotating part mounted on said motor shaft next to each other and separated by a non-rotating cup mounted to said motor housing;(e) a tubular device connected to said motor housing;(f) a power cable inside said tubular device connected to the electric motor stator;whereby said motor shaft with said mounted electric motor rotor, with said mounted rotating part of said magnetic coupling, with said two bearings, and said electric motor stator are completely contained within said motor housing and separated from the pumped liquid, and a thrust equalizing device is mounted on said rotating pump shaft.