Brush ring seal
AssigneeElliott Company
InventorMichael Arthen Mindock, III
Life of this patent
Estimating the term…
Abstract
A brush ring seal device for installation within a packing case of a turbine includes: a brush seal carrier having a substantially ring-shaped body portion having a front face, a rear face, an inner circumferential groove, and an outer circumferential groove; a brush seal mounted within the inner circumferential groove of the brush seal carrier; and a ring-shaped spring mounted within the outer circumferential groove of the brush seal carrier. The rear face of the brush seal carrier is coated with an anti-friction coating, thereby allowing movement of the brush ring seal device within the packing case.
Claims20
A brush ring seal device for installation within a packing case of a turbine, the brush ring seal device comprising:
- a brush seal carrier having a substantially ring-shaped body portion having a front face, a rear face, an inner circumferential groove, and an outer circumferential groove;
- a brush seal mounted within the inner circumferential groove of the brush seal carrier;
- and
- a ring-shaped spring mounted within the outer circumferential groove of the brush seal carrier,
- wherein the rear face of the brush seal carrier is coated with an anti-friction coating, thereby allowing movement of the brush ring seal device within the packing case.
A turbine comprising:
- a casing having an inlet end and an exhaust end;
- a rotor extending through the casing between the inlet end and the exhaust end;
- a packing case surrounding the rotor at the inlet end and the exhaust end of the casing to provide sealing of an annular gap formed by the rotor extending through the inlet end and the exhaust end of the casing;
- and
- at least one brush ring seal device installed within the packing case, the brush ring seal device comprising:
- a brush seal carrier having a substantially ring-shaped body portion having a front face, a rear face, an inner circumferential groove, and an outer circumferential groove;
- a brush seal mounted within the inner circumferential groove of the brush seal carrier;
- and
- a ring-shaped spring mounted within the outer circumferential groove of the brush seal carrier,
- wherein the rear face of the brush seal carrier is coated with an anti-friction coating, thereby allowing movement of the brush ring seal device within the packing case.
A method of sealing an annular gap formed by a rotor extending through a casing of a turbine between an inlet end of the casing and an exhaust end of the casing, the method comprising:
- positioning a packing case to surround the rotor at the inlet end and the exhaust end of the casing;
- providing at least one brush ring seal device comprising:
- a brush seal carrier having a substantially ring-shaped body portion having a front face, a rear face, an inner circumferential groove, and an outer circumferential groove;
- a brush seal mounted within the inner circumferential groove of the brush seal carrier;
- and
- a ring-shaped spring mounted within the outer circumferential groove of the brush seal carrier;
- and
- installing the brush ring seal device within the packing case to seal the annular gap,
- wherein the rear face of the brush seal carrier is coated with an anti-friction coating, thereby allowing movement of the brush ring seal device within the packing case.
Dependencies are inferred from the claim text.