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Title: Submersible canned motor mixer pump

Abstract

A mixer pump is described used in a waste tank for mobilizing high-level radioactive liquid waste having a column assembly containing power cables, a motor housing with electric motor means which includes a stator can of a stator assembly and a rotor can of a rotor assembly, and an impeller assembly with an impeller connected to a shaft of the rotor assembly. The column assembly locates the motor housing with the electric motor means adjacent to the impeller which creates an hydraulic head, and which forces the liquid waste into the motor housing to cool the electric motor means and to lubricate radial and thrust bearing assemblies. Hard-on-hard bearing surfaces of the bearing assemblies and a ring assembly between the impeller and electric motor means act to grind down large particles in the liquid waste flow. These larger particles are received in slots in the static bearing members of the radial bearing assemblies. Only solid waste particles smaller than the clearances in the system can pass there through, thereby resisting damage to and the interruption of the operation of the mixer pump. 10 figs.

Inventors:
;
Issue Date:
Research Org.:
Westinghouse Hanford Co
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
541731
Patent Number(s):
5,674,057
Application Number:
PAN: 8-398,412; TRN: 97:019550
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (United States) RLO; SCA: 052000; PA: EDB-97:140817; SN: 97001865613
DOE Contract Number:  
AC06-87RL10930
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 7 Oct 1997
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; PUMPS; MIXERS; HIGH-LEVEL RADIOACTIVE WASTES; PUMPING; MIXING; LIQUID WASTES; SLUDGES; DESIGN; ELECTRIC MOTORS; PULVERIZERS; COMMINUTION

Citation Formats

Guardiani, R.F., and Pollick, R.D. Submersible canned motor mixer pump. United States: N. p., 1997. Web.
Guardiani, R.F., & Pollick, R.D. Submersible canned motor mixer pump. United States.
Guardiani, R.F., and Pollick, R.D. Tue . "Submersible canned motor mixer pump". United States.
@article{osti_541731,
title = {Submersible canned motor mixer pump},
author = {Guardiani, R.F. and Pollick, R.D.},
abstractNote = {A mixer pump is described used in a waste tank for mobilizing high-level radioactive liquid waste having a column assembly containing power cables, a motor housing with electric motor means which includes a stator can of a stator assembly and a rotor can of a rotor assembly, and an impeller assembly with an impeller connected to a shaft of the rotor assembly. The column assembly locates the motor housing with the electric motor means adjacent to the impeller which creates an hydraulic head, and which forces the liquid waste into the motor housing to cool the electric motor means and to lubricate radial and thrust bearing assemblies. Hard-on-hard bearing surfaces of the bearing assemblies and a ring assembly between the impeller and electric motor means act to grind down large particles in the liquid waste flow. These larger particles are received in slots in the static bearing members of the radial bearing assemblies. Only solid waste particles smaller than the clearances in the system can pass there through, thereby resisting damage to and the interruption of the operation of the mixer pump. 10 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {10}
}