Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1994-11-04
1997-06-24
LaBalle, Clayton E.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 11, 310217, 417 50, H02K 4402, H02K 100, H02K 106
Patent
active
056420110
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. 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.
REFERENCES:
patent: 2987001 (1961-06-01), Blake
patent: 3302573 (1967-02-01), Ledeen
patent: 4166714 (1979-09-01), Reinass et al.
patent: 4212592 (1980-07-01), Olich et al.
patent: 4508677 (1985-04-01), Craig et al.
patent: 4557667 (1985-12-01), Delassus et al.
patent: 4859885 (1989-08-01), Kliman et al.
patent: 4882514 (1989-11-01), Brynsvold et al.
patent: 5066882 (1991-11-01), Sargeant
Patent Abstracts of Japan, vol. 11, No. 113 (E-49) (2560) Apr. 9, 1987 & JP-A-61-262063 (Hitachi).
Dahl Leslie Roy
Fanning Alan Wayne
Olich Eugene Ellsworth
Patel Mahadeo Ratilal
General Electric Company
LaBalle Clayton E.
McGinness James E.
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