Submersible canned motor mixer pump

Patent · Wed Jan 01 00:00:00 EST 1997

OSTI ID:871166

Guardiani, Richard F ^[1]; Pollick, Richard D ^[2]

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1. Ohio Township, PA
2. Sarver, PA

A mixer pump 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 therethrough, thereby resisting damage to and the interruption of the operation of the mixer pump.

• Research Organization: Westinghouse Hanford Co
• DOE Contract Number: AC06-87RL10930
• Assignee: Westinghouse Electric Corporation (Pittsburgh, PA)
• Patent Number(s): US 5674057
• OSTI ID: 871166
• Country of Publication: United States
• Language: English

Related Subjects

submersible
canned
motor
mixer
pump
waste
tank
mobilizing
high-level
radioactive
liquid
column
assembly
containing
power
cables
housing
electric
means
stator
rotor
impeller
connected
shaft
locates
adjacent
creates
hydraulic
head
forces
cool
lubricate
radial
thrust
bearing
assemblies
hard-on-hard
surfaces
grind
particles
flow
larger
received
slots
static
solid
clearances
pass
therethrough
resisting
damage
interruption
operation
radioactive liquid
column assembly
high-level radioactive
motor housing
waste particles
bearing surfaces
rotor assembly
electric motor
liquid waste
solid waste
bearing assemblies
pass therethrough
level radioactive
thrust bearing
motor means
bearing surface
larger particles
radial bearing
mixer pump
stator assembly
power cable
waste tank
assembly containing
means adjacent
submersible canned
static bearing
impeller assembly
active liquid
power cables
canned motor
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