Gas-cooled electric machine

Details Gas-cooled electric machine Gas-cooled electric machine

1992-05-26

1994-01-04

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 55, 310 58, 310260, H02K 900, H02K 912, H02K 346

Patent

active

052763749

ABSTRACT:
In the gas-cooled electric machine, the stator winding bars, which are connected to one another electrically and mechanically outside the stator core assembly (2) in the overhang space by means of metallic lugs, are provided with caps (8) which virtually completely surround the lugs while leaving free one or more approximately axially extending ducts (9). These ducts (9) are open towards the stator core assembly (2). At its end on the partition side, the cap (8) has an opening (10) which is freely connected to said ducts (9). A flexible line (11) leads from this opening directly into the suction chamber (14) of the fan (5).
As a consequence of the pressure difference between the suction chamber (14) and overhang space (13), some of the coolant conveyed by the fan (5) flows through said ducts and cools the rod ends and lugs (7).

REFERENCES:
patent: 2873393 (1959-02-01), Baudry
patent: 2900538 (1959-08-01), Tudge
patent: 2915655 (1959-12-01), Baudry
patent: 2951954 (1960-09-01), Willyoung
patent: 3693036 (1972-09-01), Schmitt
patent: 3702964 (1972-11-01), Kudlacik et al.
patent: 3822389 (1974-07-01), Kudlacik
patent: 3955110 (1976-05-01), Karlen
patent: 4629917 (1986-12-01), Brem
Brown Boveri Technik Mar. 1986: "Luftgekuhlte Turbogeneratoren Der 200-MVA-Klasse" p. 135.

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