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Title: Removable inner turbine shell with bucket tip clearance control

Abstract

A turbine includes a plurality of inner shell sections mounting first and second stage nozzle and shroud portions. The inner shell sections are pinned to an outer containment shell formed of sections to preclude circumferential movement of the inner shell relative to the outer shell and enable thermal expansion and contraction of the inner shell relative to the outer shell. Positive bucket tip clearance control is afforded by passing a thermal medium about the inner shell in heat transfer relation with the shrouds about the first and second stage bucket tips, the thermal medium being provided from a source of heating/cooling fluid independent of the turbine. Access is provided to the rotor and turbine buckets by removing the outer and inner shell sections.

Inventors:
 [1];  [2];  [3];  [4];  [5];  [6];  [1]
  1. Clifton Park, NY
  2. Niskayuna, NY
  3. Saratoga Springs, NY
  4. Amsterdam, NY
  5. Schenectady, NY
  6. Ballston Lake, NY
Issue Date:
Research Org.:
General Electric Co., Schenectady, NY (United States)
OSTI Identifier:
873066
Patent Number(s):
6082963
Assignee:
General Electric Co. (Schenectady, NY)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
DOE Contract Number:  
FC21-95MC31176
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
removable; inner; turbine; shell; bucket; tip; clearance; control; plurality; sections; mounting; stage; nozzle; shroud; portions; pinned; outer; containment; formed; preclude; circumferential; movement; relative; enable; thermal; expansion; contraction; positive; afforded; passing; medium; heat; transfer; relation; shrouds; tips; provided; source; heating; cooling; fluid; independent; access; rotor; buckets; removing; shell sections; thermal medium; outer containment; cooling fluid; inner shell; outer shell; thermal expansion; heat transfer; containment shell; shroud portion; shell section; turbine shell; sections mounting; shell formed; stage nozzle; turbine bucket; inner turbine; transfer relation; /415/

Citation Formats

Sexton, Brendan F, Knuijt, Hans M, Eldrid, Sacheverel Q, Myers, Albert, Coneybeer, Kyle E, Johnson, David Martin, and Kellock, Iain R. Removable inner turbine shell with bucket tip clearance control. United States: N. p., 2000. Web.
Sexton, Brendan F, Knuijt, Hans M, Eldrid, Sacheverel Q, Myers, Albert, Coneybeer, Kyle E, Johnson, David Martin, & Kellock, Iain R. Removable inner turbine shell with bucket tip clearance control. United States.
Sexton, Brendan F, Knuijt, Hans M, Eldrid, Sacheverel Q, Myers, Albert, Coneybeer, Kyle E, Johnson, David Martin, and Kellock, Iain R. Sat . "Removable inner turbine shell with bucket tip clearance control". United States. https://www.osti.gov/servlets/purl/873066.
@article{osti_873066,
title = {Removable inner turbine shell with bucket tip clearance control},
author = {Sexton, Brendan F and Knuijt, Hans M and Eldrid, Sacheverel Q and Myers, Albert and Coneybeer, Kyle E and Johnson, David Martin and Kellock, Iain R},
abstractNote = {A turbine includes a plurality of inner shell sections mounting first and second stage nozzle and shroud portions. The inner shell sections are pinned to an outer containment shell formed of sections to preclude circumferential movement of the inner shell relative to the outer shell and enable thermal expansion and contraction of the inner shell relative to the outer shell. Positive bucket tip clearance control is afforded by passing a thermal medium about the inner shell in heat transfer relation with the shrouds about the first and second stage bucket tips, the thermal medium being provided from a source of heating/cooling fluid independent of the turbine. Access is provided to the rotor and turbine buckets by removing the outer and inner shell sections.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}