US 2026/0309052 A1 · MAINTAINABLE DESIGN FOR BEARING COMPARTMENT SERVICE LINE INCORPORATING A GROOVED END

Abstract

A gas turbine engine includes a compressor section and a turbine section. The turbine section includes a static housing defining a bearing compartment, and the bearing compartment includes at least one bearing. A lubricant seal assembly is adjacent to the static housing to bound the bearing compartment. A tube is routed through the static housing and is configured to convey fluid. The tube includes a first end and a second end. The first end includes a grooved neck which includes an annular body with an inner circumferential surface and an outer circumferential surface surrounding the inner circumferential surface. The outer circumferential surface includes a plurality of longitudinal grooves. The second end is threaded into the static housing. A lubrication system supplies lubricant to the bearing compartment and a shaft is supported by the at least one bearing. A method is also disclosed.

Claims20

Dependent claims

A gas turbine engine comprising:

a compressor section and a turbine section, the turbine section having a static housing defining a bearing compartment, the bearing compartment including at least one bearing;
a lubricant seal assembly adjacent to the static housing to bound the bearing compartment;
a tube routed through the static housing and configured to convey fluid, the tube including a first end and a second end, wherein the first end includes a grooved neck, the grooved neck including an annular body with an inner circumferential surface and an outer circumferential surface surrounding the inner circumferential surface, the outer circumferential surface including a plurality of longitudinal grooves, and the second end threaded into the static housing;
a lubrication system to supply lubricant to the bearing compartment;
and
a shaft supported by the at least one bearing.

3 more elements

A tube assembly configured for installation within a static housing of a gas turbine engine, the static housing defining a bearing compartment, comprising:

a tube including an elongated body extending between a first end and a second end and defining an internal passage, the second end including a threaded portion configured to engage a complementary threaded surface of the static housing;
a grooved neck at the first end of the tube, opposite the second end, the grooved neck including an outer circumferential surface having a plurality of longitudinal grooves configured to receive torque from a tool to rotate the tube relative to the static housing;
a collar including a body and an aperture extending through the body, the aperture configured to receive the first end of the tube therethrough;
and
a retention plate configured to be positioned over the collar and coupled to the static housing to inhibit rotation of the tube relative to the static housing.

2 more elements

Dependencies are inferred from the claim text.

Maintainable design for bearing compartment service line incorporating a grooved end

Life of this patent

Maintainable design for bearing compartment service line incorporating a grooved end

Life of this patent

Abstract

Claims20