Double-stator electromagnetic pump having alignment ring and spine assembly

Patent · Wed Jan 01 04:00:00 EST 1997

OSTI ID:871018

Fanning, Alan Wayne ^[1]; Olich, Eugene Ellsworth ^[2]; Dahl, Leslie Roy ^[3]; Patel, Mahadeo Ratilal ^[1]

---

1. San Jose, CA
2. Aptos, CA
3. Livermore, CA

A support structure for clamping the inner coils and inner lamination rings of an inner stator column of an electromagnetic induction pump to prevent damaging vibration. A spine assembly, including a base plate, a center post and a plurality of ribs, serves as the structural frame for the inner stator. Stacked alignment rings provide structure to the lamination rings and locate them concentrically around the spine assembly central axis. The alignment rings are made of a material having a high thermal expansion coefficient to compensate for the lower expansion of the lamination rings and, overall, provide an approximate match to the expansion of the inner flow duct. The net result is that the radial clamping provided by the duct around the stator iron is maintained (approximately) over a range of temperatures and operating conditions. Axial clamping of the inner stator structure is achieved via tie rods which run through grooves in the ribs and engage the base plate at the bottom of the inner stator and engage a clamping plate at the top. Slender tie rods and a flexible clamping plate are used to provide compliance in the axial clamping system to accommodate differential thermal growth (axially) between the tie rods and lamination ring elements without losing clamping force.

• Research Organization: General Electric Co
• DOE Contract Number: AC03-89SF17445
• Assignee: General Electric Company (San Jose, CA)
• Patent Number(s): US 5642011
• OSTI ID: 871018
• Country of Publication: United States
• Language: English

Related Subjects

/310/417/
accommodate
achieved
alignment
approximate
approximately
assembly
axial
axially
axis
base
base plate
bottom
center
central
central axis
clamping
clamping force
coefficient
coils
column
compensate
compliance
concentrically
conditions
damaging
differential
differential thermal
double-stator
duct
electromagnetic
electromagnetic induction
electromagnetic pump
elements
engage
expansion
expansion coefficient
flexible
flow
flow duct
force
frame
grooves
growth
including
induction
induction pump
inner
inner coil
inner coils
inner flow
iron
lamination
locate
losing
maintained
match
material
net
operating
operating condition
operating conditions
overall
plate
plurality
post
prevent
provide
provided
pump
radial
range
result
ribs
rings
rods
run
serves
slender
spine
stacked
stator
structural
structural frame
structure
support
support structure
temperatures
thermal
thermal expansion
thermal growth
tie
tie rods
top
via
vibration