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Title: Apparatus and methods for installing, removing and adjusting an inner turbine shell section relative to an outer turbine shell section

Abstract

A turbine includes upper and lower inner shell sections mounting the nozzles and shrouds and which inner shell is supported by pins secured to a surrounding outer shell. To disassemble the turbine for access to the inner shell sections and rotor, an alignment fixture is secured to the lower outer shell section and has pins engaging the inner shell section. To disassemble the turbine, the inner shell weight is transferred to the lower outer shell section via the alignment fixture and cradle pins. Roller assemblies are inserted through access openings vacated by support pins to permit rotation of the lower inner shell section out of and into the lower outer shell section during disassembly and assembly. The alignment fixture includes adjusting rods for adjusting the inner shell axially, vertically, laterally and about a lateral axis. A roller over-cage is provided to rotate the inner shell and a dummy shell to facilitate assembly and disassembly in the field.

Inventors:
 [1];  [2];  [3];  [4];  [4]
  1. Niskayuna, NY
  2. Scotia, NY
  3. Salem, NC
  4. Milford, OH
Issue Date:
Research Org.:
General Electric Co., Schenectady, NY (United States)
OSTI Identifier:
873697
Patent Number(s):
6224332
Assignee:
General Electric Co. (Schenectady, NY)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
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
DOE Contract Number:  
FC21-95MC31176
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
apparatus; methods; installing; removing; adjusting; inner; turbine; shell; section; relative; outer; upper; sections; mounting; nozzles; shrouds; supported; pins; secured; surrounding; disassemble; access; rotor; alignment; fixture; engaging; weight; transferred; via; cradle; roller; assemblies; inserted; openings; vacated; support; permit; rotation; disassembly; assembly; rods; axially; vertically; laterally; lateral; axis; over-cage; provided; rotate; dummy; facilitate; field; shell sections; alignment fixture; inner shell; outer shell; shell section; turbine shell; sections mounting; facilitate assembly; inner turbine; /415/

Citation Formats

Leach, David, Bergendahl, Peter Allen, Waldo, Stuart Forrest, Smith, Robert Leroy, and Phelps, Robert Kim. Apparatus and methods for installing, removing and adjusting an inner turbine shell section relative to an outer turbine shell section. United States: N. p., 2001. Web.
Leach, David, Bergendahl, Peter Allen, Waldo, Stuart Forrest, Smith, Robert Leroy, & Phelps, Robert Kim. Apparatus and methods for installing, removing and adjusting an inner turbine shell section relative to an outer turbine shell section. United States.
Leach, David, Bergendahl, Peter Allen, Waldo, Stuart Forrest, Smith, Robert Leroy, and Phelps, Robert Kim. Mon . "Apparatus and methods for installing, removing and adjusting an inner turbine shell section relative to an outer turbine shell section". United States. https://www.osti.gov/servlets/purl/873697.
@article{osti_873697,
title = {Apparatus and methods for installing, removing and adjusting an inner turbine shell section relative to an outer turbine shell section},
author = {Leach, David and Bergendahl, Peter Allen and Waldo, Stuart Forrest and Smith, Robert Leroy and Phelps, Robert Kim},
abstractNote = {A turbine includes upper and lower inner shell sections mounting the nozzles and shrouds and which inner shell is supported by pins secured to a surrounding outer shell. To disassemble the turbine for access to the inner shell sections and rotor, an alignment fixture is secured to the lower outer shell section and has pins engaging the inner shell section. To disassemble the turbine, the inner shell weight is transferred to the lower outer shell section via the alignment fixture and cradle pins. Roller assemblies are inserted through access openings vacated by support pins to permit rotation of the lower inner shell section out of and into the lower outer shell section during disassembly and assembly. The alignment fixture includes adjusting rods for adjusting the inner shell axially, vertically, laterally and about a lateral axis. A roller over-cage is provided to rotate the inner shell and a dummy shell to facilitate assembly and disassembly in the field.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}