Apparatus and methods for removing and installing a selected nozzle segment of a gas turbine in an axial direction

Apparatus and methods for removing and installing a selected nozzle segment of a gas turbine in an axial direction

Nozzle segments are secured to a retention ring against circumferential rotation by anti-rotation pins extending generally axially between the outer bands of the nozzle segments and the retention ring. Retention plate segments overlie the ends of the pins, preventing axial removal thereof. To remove...

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Hauptverfasser: Arness, Brian Peter, Greene, John Ellington, Farral, Linda Jean, Chan, Sze Bun Brian
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Sprache:eng
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creator Arness, Brian Peter
Greene, John Ellington
Farral, Linda Jean
Chan, Sze Bun Brian
description Nozzle segments are secured to a retention ring against circumferential rotation by anti-rotation pins extending generally axially between the outer bands of the nozzle segments and the retention ring. Retention plate segments overlie the ends of the pins, preventing axial removal thereof. To remove a selected nozzle segment, inner diameter retention plate segments and selected retention plate segments are removed, the latter exposing the ends of the pins for axial withdrawal. Upon removal of a predetermined number of pins, the nozzle segments adjacent the selected segment are displaced away from the latter segment to open a gap between the selected segment and adjacent segments whereby the selected segment can be removed in an axial direction.
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Retention plate segments overlie the ends of the pins, preventing axial removal thereof. To remove a selected nozzle segment, inner diameter retention plate segments and selected retention plate segments are removed, the latter exposing the ends of the pins for axial withdrawal. 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Retention plate segments overlie the ends of the pins, preventing axial removal thereof. To remove a selected nozzle segment, inner diameter retention plate segments and selected retention plate segments are removed, the latter exposing the ends of the pins for axial withdrawal. Upon removal of a predetermined number of pins, the nozzle segments adjacent the selected segment are displaced away from the latter segment to open a gap between the selected segment and adjacent segments whereby the selected segment can be removed in an axial direction.</abstract><oa>free_for_read</oa></addata></record>
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title Apparatus and methods for removing and installing a selected nozzle segment of a gas turbine in an axial direction
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