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

Title: Cooling/heating augmentation during turbine startup/shutdown using a seal positioned by thermal response of turbine parts and consequent relative movement thereof

Abstract

In a turbine rotor, a thermal mismatch between various component parts of the rotor occurs particularly during transient operations such as shutdown and startup. A thermal medium flows past and heats or cools one part of the turbine which may have a deleterious thermal mismatch with another part. By passively controlling the flow of cooling medium past the one part in response to relative movement of thermally responsive parts of the turbine, the flow of thermal medium along the flow path can be regulated to increase or reduce the flow, thereby to regulate the temperature of the one part to maintain the thermal mismatch within predetermined limits.

Inventors:
 [1]
  1. Niskayuna, NY
Publication Date:
Research Org.:
General Electric Co., Schenectady, NY (United States)
OSTI Identifier:
873368
Patent Number(s):
US 6146090
Assignee:
General Electric Co. (Schenectady, NY)
DOE Contract Number:  
FC21-95MC31176
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
cooling; heating; augmentation; turbine; startup; shutdown; seal; positioned; thermal; response; consequent; relative; movement; rotor; mismatch; various; component; occurs; particularly; transient; operations; medium; flows; past; heats; cools; deleterious; passively; controlling; flow; thermally; responsive; path; regulated; increase; reduce; regulate; temperature; maintain; predetermined; limits; thermal medium; medium flow; turbine rotor; cooling medium; flow path; relative movement; thermal mismatch; predetermined limits; thermally responsive; thermal response; various component; /415/416/

Citation Formats

Schmidt, Mark Christopher. Cooling/heating augmentation during turbine startup/shutdown using a seal positioned by thermal response of turbine parts and consequent relative movement thereof. United States: N. p., 2000. Web.
Schmidt, Mark Christopher. Cooling/heating augmentation during turbine startup/shutdown using a seal positioned by thermal response of turbine parts and consequent relative movement thereof. United States.
Schmidt, Mark Christopher. Sat . "Cooling/heating augmentation during turbine startup/shutdown using a seal positioned by thermal response of turbine parts and consequent relative movement thereof". United States. https://www.osti.gov/servlets/purl/873368.
@article{osti_873368,
title = {Cooling/heating augmentation during turbine startup/shutdown using a seal positioned by thermal response of turbine parts and consequent relative movement thereof},
author = {Schmidt, Mark Christopher},
abstractNote = {In a turbine rotor, a thermal mismatch between various component parts of the rotor occurs particularly during transient operations such as shutdown and startup. A thermal medium flows past and heats or cools one part of the turbine which may have a deleterious thermal mismatch with another part. By passively controlling the flow of cooling medium past the one part in response to relative movement of thermally responsive parts of the turbine, the flow of thermal medium along the flow path can be regulated to increase or reduce the flow, thereby to regulate the temperature of the one part to maintain the thermal mismatch within predetermined limits.},
doi = {},
url = {https://www.osti.gov/biblio/873368}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

Patent:

Save / Share: