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Title: Turbine interstage seal with self-balancing capability

Abstract

An interstage seal for a turbine of a gas turbine engine, the interstage seal having a seal carrier with an axial extending seal tooth movable with a stator of the engine, and a rotor with a seal surface that forms the interstage seal with the seal tooth, where a magnetic force produced by two magnets and a gas force produced by a gas pressure acting on the seal carrier forms a balancing force to maintain a close clearance of the seal without the seal tooth contacting the rotor seal surfaces during engine operation. In other embodiments, two pairs of magnets produce first and second magnetic forces that balance the seal in the engine.

Inventors:
; ;
Publication Date:
Research Org.:
FLORIDA TURBINE TECHNOLOGIES, INC., Jupiter, FL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1399246
Patent Number(s):
9,771,821
Application Number:
14/739,536
Assignee:
FLORIDA TURBINE TECHNOLOGIES, INC. CHO
DOE Contract Number:  
SC0008218
Resource Type:
Patent
Resource Relation:
Patent File Date: 2015 Jun 15
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 33 ADVANCED PROPULSION SYSTEMS

Citation Formats

Mills, Jacob A, Jones, Russell B, and Sexton, Thomas D. Turbine interstage seal with self-balancing capability. United States: N. p., 2017. Web.
Mills, Jacob A, Jones, Russell B, & Sexton, Thomas D. Turbine interstage seal with self-balancing capability. United States.
Mills, Jacob A, Jones, Russell B, and Sexton, Thomas D. Tue . "Turbine interstage seal with self-balancing capability". United States. doi:. https://www.osti.gov/servlets/purl/1399246.
@article{osti_1399246,
title = {Turbine interstage seal with self-balancing capability},
author = {Mills, Jacob A and Jones, Russell B and Sexton, Thomas D},
abstractNote = {An interstage seal for a turbine of a gas turbine engine, the interstage seal having a seal carrier with an axial extending seal tooth movable with a stator of the engine, and a rotor with a seal surface that forms the interstage seal with the seal tooth, where a magnetic force produced by two magnets and a gas force produced by a gas pressure acting on the seal carrier forms a balancing force to maintain a close clearance of the seal without the seal tooth contacting the rotor seal surfaces during engine operation. In other embodiments, two pairs of magnets produce first and second magnetic forces that balance the seal in the engine.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 26 00:00:00 EDT 2017},
month = {Tue Sep 26 00:00:00 EDT 2017}
}

Patent:

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Works referenced in this record:

Sealing arrangements
patent-application, February 2017