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Title: Methods for disassembling, replacing and assembling parts of a steam cooling system for a gas turbine

Abstract

The steam cooling circuit for a gas turbine includes a bore tube assembly supplying steam to circumferentially spaced radial tubes coupled to supply elbows for transitioning the radial steam flow in an axial direction along steam supply tubes adjacent the rim of the rotor. The supply tubes supply steam to circumferentially spaced manifold segments located on the aft side of the 1-2 spacer for supplying steam to the buckets of the first and second stages. Spent return steam from these buckets flows to a plurality of circumferentially spaced return manifold segments disposed on the forward face of the 1-2 spacer. Crossover tubes couple the steam supply from the steam supply manifold segments through the 1-2 spacer to the buckets of the first stage. Crossover tubes through the 1-2 spacer also return steam from the buckets of the second stage to the return manifold segments. Axially extending return tubes convey spent cooling steam from the return manifold segments to radial tubes via return elbows. The bore tube assembly, radial tubes, elbows, manifold segments and crossover tubes are removable from the turbine rotor and replaceable.

Inventors:
 [1];  [2]
  1. (Mauldin, SC)
  2. (Albany, NY)
Issue Date:
Research Org.:
General Electric Company (Schenectady, NY)
OSTI Identifier:
874864
Patent Number(s):
6477773
Assignee:
General Electric Company (Schenectady, NY) NETL
DOE Contract Number:  
FC21-95MC31176
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
methods; disassembling; replacing; assembling; steam; cooling; gas; turbine; circuit; bore; tube; assembly; supplying; circumferentially; spaced; radial; tubes; coupled; supply; elbows; transitioning; flow; axial; direction; adjacent; rim; rotor; manifold; segments; located; 1-2; spacer; buckets; stages; spent; return; flows; plurality; disposed; forward; crossover; couple; stage; axially; extending; convey; via; removable; replaceable; gas turbine; steam flow; /29/

Citation Formats

Wilson, Ian D., and Wesorick, Ronald R. Methods for disassembling, replacing and assembling parts of a steam cooling system for a gas turbine. United States: N. p., 2002. Web.
Wilson, Ian D., & Wesorick, Ronald R. Methods for disassembling, replacing and assembling parts of a steam cooling system for a gas turbine. United States.
Wilson, Ian D., and Wesorick, Ronald R. Tue . "Methods for disassembling, replacing and assembling parts of a steam cooling system for a gas turbine". United States. https://www.osti.gov/servlets/purl/874864.
@article{osti_874864,
title = {Methods for disassembling, replacing and assembling parts of a steam cooling system for a gas turbine},
author = {Wilson, Ian D. and Wesorick, Ronald R.},
abstractNote = {The steam cooling circuit for a gas turbine includes a bore tube assembly supplying steam to circumferentially spaced radial tubes coupled to supply elbows for transitioning the radial steam flow in an axial direction along steam supply tubes adjacent the rim of the rotor. The supply tubes supply steam to circumferentially spaced manifold segments located on the aft side of the 1-2 spacer for supplying steam to the buckets of the first and second stages. Spent return steam from these buckets flows to a plurality of circumferentially spaced return manifold segments disposed on the forward face of the 1-2 spacer. Crossover tubes couple the steam supply from the steam supply manifold segments through the 1-2 spacer to the buckets of the first stage. Crossover tubes through the 1-2 spacer also return steam from the buckets of the second stage to the return manifold segments. Axially extending return tubes convey spent cooling steam from the return manifold segments to radial tubes via return elbows. The bore tube assembly, radial tubes, elbows, manifold segments and crossover tubes are removable from the turbine rotor and replaceable.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

Patent:

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