skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Active bypass flow control for a seal in a gas turbine engine

Abstract

An active bypass flow control system for controlling bypass compressed air based upon leakage flow of compressed air flowing past an outer balance seal between a stator and rotor of a first stage of a gas turbine in a gas turbine engine is disclosed. The active bypass flow control system is an adjustable system in which one or more metering devices may be used to control the flow of bypass compressed air as the flow of compressed air past the outer balance seal changes over time as the outer balance seal between the rim cavity and the cooling cavity wears. In at least one embodiment, the metering device may include a valve formed from one or more pins movable between open and closed positions in which the one pin at least partially bisects the bypass channel to regulate flow.

Inventors:
;
Publication Date:
Research Org.:
SIEMENS ENERGY, INC. Orlando, FL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1338923
Patent Number(s):
9,540,945
Application Number:
14/192,974
Assignee:
SIEMENS ENERGY, INC. (Orlando, FL) NETL
DOE Contract Number:  
FC26-05NT42644
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Feb 28
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 33 ADVANCED PROPULSION SYSTEMS

Citation Formats

Ebert, Todd A., and Kimmel, Keith D. Active bypass flow control for a seal in a gas turbine engine. United States: N. p., 2017. Web.
Ebert, Todd A., & Kimmel, Keith D. Active bypass flow control for a seal in a gas turbine engine. United States.
Ebert, Todd A., and Kimmel, Keith D. Tue . "Active bypass flow control for a seal in a gas turbine engine". United States. https://www.osti.gov/servlets/purl/1338923.
@article{osti_1338923,
title = {Active bypass flow control for a seal in a gas turbine engine},
author = {Ebert, Todd A. and Kimmel, Keith D.},
abstractNote = {An active bypass flow control system for controlling bypass compressed air based upon leakage flow of compressed air flowing past an outer balance seal between a stator and rotor of a first stage of a gas turbine in a gas turbine engine is disclosed. The active bypass flow control system is an adjustable system in which one or more metering devices may be used to control the flow of bypass compressed air as the flow of compressed air past the outer balance seal changes over time as the outer balance seal between the rim cavity and the cooling cavity wears. In at least one embodiment, the metering device may include a valve formed from one or more pins movable between open and closed positions in which the one pin at least partially bisects the bypass channel to regulate flow.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {1}
}

Patent:

Save / Share:

Works referenced in this record: