Seal face plate cooling

Patent metadata

Field	Value
Publication number	US-10494941-B2
Application number	US-201615294923-A
Country	US
Kind code	B2
Filing date	Oct 17, 2016
Priority date	Oct 17, 2016
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

Aspects of the disclosure are directed to a sealing system for an engine having an axial centerline, comprising: a stationary carbon segment, and a seal plate that rotates when the engine is operated, where the seal plate includes an end face that is opposed to an interface between the carbon segment and the seal plate, and where the end face includes at least one groove that conveys a liquid cooling fluid.

First claim

What is claimed is:

1. A sealing system for an engine having an axial centerline, comprising:
a stationary carbon segment; and
a seal plate that rotates when the engine is operated;
wherein the seal plate includes an end face that is opposed to an interface between the carbon segment and the seal plate;
wherein the end face includes a plurality of grooves that convey a liquid cooling fluid;
wherein each of the grooves starts at a respective first circumferential location of the end face at an inner diameter of the end face and ends at a respective second circumferential location of the end face at an outer diameter of the end face, the first and second circumferential locations being different circumferential locations;
wherein the end includes a plurality of fin;
wherein the grooves and fins are formed in an alternating sequence in the end face;
wherein the end face has a non-constant groove width to pitch ratio over a radial span of the end face; and
wherein the groove width to pitch ratio increases from the inner diameter of the end face towards the outer diameter of the end face.

2. A sealing system for an engine having an axial centerline, comprising:
a sealing segment; and
a seal plate that rotates when the engine is operated;
wherein the seal plate includes an end face that is opposed to an interface between the sealing segment and the seal plate;
wherein the end face includes a groove that conveys a liquid cooling fluid;
wherein the groove starts at a first circumferential location of the end face at an inner diameter of the end face and ends at a second circumferential location of the end face at an outer diameter of the end face the first and second circumferential locations being different circumferential locations;
wherein the end face has a non-constant groove width to pitch ratio over a radial span of the end face; and
wherein the groove width to pitch ratio increases from the inner diameter of the end face towards the outer diameter of the end face.

Assignees

• United Technologies Corp

Inventors

• Kovacik Ronnie K
• Duffy Kevin
• Walker Brady
• Artiles Antonio F

Classifications

• F16J15/4476

  with radial path · CPC title

• F16J15/3404

  and characterised by parts or details relating to lubrication, cooling or venting of the seal · CPC title

• F05D2240/55

  Seals · CPC title

• F01D25/125

  of bearings · CPC title

• F05D2300/224

  Carbon, e.g. graphite · CPC title