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Title: Self-locking nozzle blocks for steam turbines

Abstract

This patent describes an axial flow steam turbine. It comprises a rotor; a casing; an inlet nozzle ring disposed circumferentially about the rotor within the casing, having a first thermal coefficient of expansion, the inlet nozzle ring including radially spaced inner and outer shrouds; nozzle blocks, having a second thermal coefficient of expansion greater than the first coefficient of expansion of the inlet nozzle ring, and having radially inwardly and outwardly extending flanges; apertures formed through the front arcuate section of the nozzle ring; coaxial bores formed in the rear arcuate section thereof to form an end wall; and a locking pin, having a thermal coefficient of expansion greater than the first coefficient of expansion of the inlet nozzle ring, inserted into the bore in the rear arcuate section having a first end contacting the end wall, and a second end flush with the face of the rear arcuate section at ambient temperature.

Inventors:
Publication Date:
OSTI Identifier:
5669042
Patent Number(s):
US 5037269; A
Application Number:
PPN: US 7-470474
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US))
Resource Type:
Patent
Resource Relation:
Patent File Date: 26 Jan 1990
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; STEAM TURBINES; DESIGN; NOZZLES; THERMAL EXPANSION; EQUIPMENT; EXPANSION; MACHINERY; TURBINES; TURBOMACHINERY; 200104* - Fossil-Fueled Power Plants- Components

Citation Formats

Halberg, W. Self-locking nozzle blocks for steam turbines. United States: N. p., 1991. Web.
Halberg, W. Self-locking nozzle blocks for steam turbines. United States.
Halberg, W. Tue . "Self-locking nozzle blocks for steam turbines". United States.
@article{osti_5669042,
title = {Self-locking nozzle blocks for steam turbines},
author = {Halberg, W},
abstractNote = {This patent describes an axial flow steam turbine. It comprises a rotor; a casing; an inlet nozzle ring disposed circumferentially about the rotor within the casing, having a first thermal coefficient of expansion, the inlet nozzle ring including radially spaced inner and outer shrouds; nozzle blocks, having a second thermal coefficient of expansion greater than the first coefficient of expansion of the inlet nozzle ring, and having radially inwardly and outwardly extending flanges; apertures formed through the front arcuate section of the nozzle ring; coaxial bores formed in the rear arcuate section thereof to form an end wall; and a locking pin, having a thermal coefficient of expansion greater than the first coefficient of expansion of the inlet nozzle ring, inserted into the bore in the rear arcuate section having a first end contacting the end wall, and a second end flush with the face of the rear arcuate section at ambient temperature.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {8}
}