Radial lead seal assembly for a generator and method incorporating the same

摘要

A radial lead seal assembly of a generator and a method for sealing a radial chamber from an axial chamber of a generator using a radial lead seal assembly are presented. The radial lead seal assembly includes sealing elements disposed around a radial lead to seal an annular space between the radial lead and the radial chamber and thereby seal the axial chamber fluidically from the radial chamber. Conical springs are disposed annularly around the radial lead between the sealing elements and a junction between the radial lead and the axial lead. The radial lead seal assembly includes a nut for exerting a compressive load on the radial lead seal assembly in a radially inward direction such that the conical springs are only partially compressed.

主权项

1. A radial lead seal assembly of a generator, wherein the generator comprises a lead assembly for conducting a field current to a rotor winding, wherein the lead assembly comprises an axial lead extending within an axial chamber through the rotor and a radial lead extending radially outward from the axial lead through a radial chamber, the radial lead seal assembly comprising:
a plurality of annular sealing elements disposed annularly around the radial lead to seal an annular space between the radial lead and the radial chamber and thereby seal the axial chamber fluidically from the radial chamber; a plurality of conical springs disposed annularly around the radial lead between the plurality of sealing elements and a junction between the radial lead and the axial lead; and a loading member for exerting a compressive load on the radial lead seal assembly in a radially inward direction such that the conical springs are only partially compressed, wherein a clearance from an outer diameter of the conical springs to an inner diameter of the radial chamber is smaller than a clearance from an inner diameter of the conical springs to an outer diameter of an insulation of the radial lead so that the conical springs do not contact with an insulated surface of the radial lead.