Removable inner turbine shell with bucket tip clearance control

Sexton, Brendan F; Knuijt, Hans M; Eldrid, Sacheverel Q; Myers, Albert; Coneybeer, Kyle E; Johnson, David Martin; Kellock, Iain R

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A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
A43 - footwear
A44 - haberdashery
A45 - hand or travelling articles
A46 - brushware
A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
A63 - sports
A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
B02 - crushing, pulverising, or disintegrating
B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
B06 - generating or transmitting mechanical vibrations in general
B07 - separating solids from solids
B08 - cleaning
B09 - disposal of solid waste
B21 - mechanical metal-working without essentially removing material
B22 - casting
B23 - machine tools
B24 - grinding
B25 - hand tools
B26 - hand cutting tools
B27 - working or preserving wood or similar material
B28 - working cement, clay, or stone
B29 - working of plastics
B30 - presses
B31 - making articles of paper, cardboard or material worked in a manner analogous to paper
B32 - layered products
B33 - additive manufacturing technology
B41 - printing
B42 - bookbinding
B43 - writing or drawing implements
B44 - decorative arts
B60 - vehicles in general
B61 - railways
B62 - land vehicles for travelling otherwise than on rails
B63 - ships or other waterborne vessels
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B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
B81 - microstructural technology
B82 - nanotechnology
B99 - subject matter not otherwise provided for in this section
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C01 - inorganic chemistry
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C14 - skins
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C22 - metallurgy
C23 - coating metallic material
C25 - electrolytic or electrophoretic processes
C30 - crystal growth
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D - textiles
D01 - natural or man-made threads or fibres
D02 - yarns
D03 - weaving
D04 - braiding
D05 - sewing
D06 - treatment of textiles or the like
D07 - ropes
D10 - indexing scheme associated with sublasses of section d, relating to textiles
D21 - paper-making
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E04 - building
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F - mechanical engineering
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G12 - instrument details
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Title: Removable inner turbine shell with bucket tip clearance control

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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:

Sexton, Brendan F ^[1]; Knuijt, Hans M ^[2]; Eldrid, Sacheverel Q ^[3]; Myers, Albert ^[4]; Coneybeer, Kyle E ^[5]; Johnson, David Martin ^[6]; Kellock, Iain R ^[1]

Clifton Park, NY
Niskayuna, NY
Saratoga Springs, NY
Amsterdam, NY
Schenectady, NY
Ballston Lake, NY

Issue Date:: 2000-01-01

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 F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02C - GAS-TURBINE PLANTS

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F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F01D11/24 - by selectively cooling-heating stator or rotor components
F01D25/14 - Casings modified therefor
F01D25/26 - Double casings
F01D25/285 - {Temporary support structures, e.g. for testing, assembling, installing, repairing

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02C - GAS-TURBINE PLANTS
F02C7/18 - the medium being gaseous, e.g. air {

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
F05D2230/642 - using maintaining alignment while permitting differential dilatation
F05D2230/644 - for adjusting the position or the alignment, e.g. wedges or eccenters
F05D2230/70 - Disassembly methods
F05D2240/90 - Mounting on supporting structures or systems
F05D2260/205 - Cooling fluid recirculation, i.e. after cooling one or more components is the cooling fluid recovered and used elsewhere for other purposes
F05D2260/232 - characterized by the cooling medium
F05D2260/2322 - steam

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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.

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                    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.

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                    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.

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@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}

}

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