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Title: Double-stator electromagnetic pump having alignment ring and spine assembly

Abstract

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 is disclosed. 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) betweenmore » the tie rods and lamination ring elements without losing clamping force. 12 figs.« less

Inventors:
; ; ;
Issue Date:
Research Org.:
General Electric Co
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
512437
Patent Number(s):
5,642,011
Application Number:
PAN: 8-334,644
Assignee:
General Electric Co., San Jose, CA (United States) OAK; SCA: 420200; PA: EDB-97:112654; SN: 97001827927
DOE Contract Number:  
AC03-89SF17445
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 24 Jun 1997
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; ELECTROMAGNETIC PUMPS; SUPPORTS; ANCHORS; STATORS; THERMAL EXPANSION; DESIGN; MECHANICAL VIBRATIONS

Citation Formats

Fanning, A.W., Olich, E.E., Dahl, L.R., and Patel, M.R. Double-stator electromagnetic pump having alignment ring and spine assembly. United States: N. p., 1997. Web.
Fanning, A.W., Olich, E.E., Dahl, L.R., & Patel, M.R. Double-stator electromagnetic pump having alignment ring and spine assembly. United States.
Fanning, A.W., Olich, E.E., Dahl, L.R., and Patel, M.R. Tue . "Double-stator electromagnetic pump having alignment ring and spine assembly". United States.
@article{osti_512437,
title = {Double-stator electromagnetic pump having alignment ring and spine assembly},
author = {Fanning, A.W. and Olich, E.E. and Dahl, L.R. and Patel, M.R.},
abstractNote = {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 is disclosed. 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. 12 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {6}
}