US 2003/0163995 A1 · Apparatus for positioning an igniter within a liner port of a gas turbine engine

Abstract

An igniter tube for a gas turbine engine combustor has an inner surface, an outer surface, and a longitudinal axis therethrough. More specifically, the igniter tube includes: a first portion positioned within a port of a liner for the combustor, the first portion having an inner surface with an inner diameter and an outer surface with an outer diameter; a second portion located adjacent the first portion, the second portion having an inner surface with an inner diameter and an outer surface with an outer diameter, wherein the second portion outer diameter increases from the first portion outer diameter at a first end to a predetermined outer diameter at a second end; and, a third portion located adjacent the second portion, the third portion having an inner surface with an inner diameter and an outer surface with an outer diameter, wherein the third portion outer diameter is substantially the same as the predetermined outer diameter. Moreover, the second portion inner diameter of the igniter tube is substantially equal to the first portion inner diameter and the third portion inner diameter of the igniter tube is greater than the inner diameter of the second portion.

Claims23

Dependent claims

An igniter tube for a gas turbine engine combustor, said igniter tube having an inner surface, an outer surface, and a longitudinal axis therethrough, comprising:

(a) a first portion positioned within a port of a liner for said combustor, said first portion having an inner surface with an inner diameter and an outer surface with an outer diameter;
(b) a second portion located adjacent said first portion, said second portion having an inner surface with an inner diameter and an outer surface with an outer diameter, wherein said second portion outer diameter increases from said first portion outer diameter at a first end to a predetermined outer diameter at a second end;
and,
(c) a third portion located adjacent said second portion, said third portion having an inner surface with an inner diameter and an outer surface with an outer diameter, wherein said third portion outer diameter is substantially equal to said predetermined outer diameter.

1 more element

An apparatus for positioning an igniter within a liner port of a gas turbine engine combustor, wherein a longitudinal axis extends through said liner port, said apparatus comprising:

(a) a ferrule for receiving said igniter, comprising:
(1) a first portion;
(2) a wear collar extending from said first portion generally parallel to said longitudinal axis;
and
(3) a sealing flange extending substantially perpendicular to said longitudinal axis;
and
(b) an igniter tube connected to said liner port, comprising:
(1) a first portion positioned within said liner port, said first portion having an inner surface with an inner diameter and an outer surface with an outer diameter;
(2) a second portion located adjacent said first portion, said second portion having an inner surface with an inner diameter and an outer surface with an outer diameter, wherein said second portion inner diameter is substantially equal to said first portion inner diameter;
and
(3) a third portion located adjacent said second portion, said third portion having an inner surface with an inner diameter and an outer surface with an outer diameter, wherein said third portion inner diameter is greater than said first and second portion inner diameters;
wherein said ferrule wear collar extends into said igniter tube third portion and is able to move substantially perpendicular to said longitudinal axis a predetermined amount.

9 more elements

Dependencies are inferred from the claim text.

Apparatus for positioning an igniter within a liner port of a gas turbine engine

Life of this patent

Apparatus for positioning an igniter within a liner port of a gas turbine engine

Life of this patent

Abstract

Claims23