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Title: Turbine protection system for bypass operation

Abstract

In a steam turbine installation having a high pressure turbine, a steam generator is described for providing steam to the turbine, at least a lower pressure turbine, a reheater in the steam path between the high and lower pressure turbines, and a steam bypass path for bypassing the turbines, the high pressure turbine having a one-way check valve in its output steam line to prevent bypass steam from entering its output. The improvement described here consists of: (A) a second bypass path for passing steam around the high pressure turbine; (B) the second bypass path including, (i) steam jet compressor means including two input sections and an output section, with one input section being connected to the high pressure turbine output, the other input section being connected to receive steam from the steam generator and the output section being connected to the input of the reheater, (ii) valving means for controlling the steam supply from the steam generator to the steam jet compressor means; and (C) control means responsive to an output condition at the high pressure turbine output for controlling the valving means.

Inventors:
Publication Date:
OSTI Identifier:
5694768
Patent Number(s):
US 4576008
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 11 Jan 1984
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; STEAM TURBINES; VALVES; COMPRESSORS; CONTROL EQUIPMENT; HEATERS; JETS; PRESSURE DEPENDENCE; STEAM GENERATORS; STEAM LINES; BOILERS; EQUIPMENT; FLOW REGULATORS; MACHINERY; TURBINES; TURBOMACHINERY; VAPOR GENERATORS; 421000* - Engineering- Combustion Systems

Citation Formats

Silvestri, Jr, G J. Turbine protection system for bypass operation. United States: N. p., 1986. Web.
Silvestri, Jr, G J. Turbine protection system for bypass operation. United States.
Silvestri, Jr, G J. 1986. "Turbine protection system for bypass operation". United States.
@article{osti_5694768,
title = {Turbine protection system for bypass operation},
author = {Silvestri, Jr, G J},
abstractNote = {In a steam turbine installation having a high pressure turbine, a steam generator is described for providing steam to the turbine, at least a lower pressure turbine, a reheater in the steam path between the high and lower pressure turbines, and a steam bypass path for bypassing the turbines, the high pressure turbine having a one-way check valve in its output steam line to prevent bypass steam from entering its output. The improvement described here consists of: (A) a second bypass path for passing steam around the high pressure turbine; (B) the second bypass path including, (i) steam jet compressor means including two input sections and an output section, with one input section being connected to the high pressure turbine output, the other input section being connected to receive steam from the steam generator and the output section being connected to the input of the reheater, (ii) valving means for controlling the steam supply from the steam generator to the steam jet compressor means; and (C) control means responsive to an output condition at the high pressure turbine output for controlling the valving means.},
doi = {},
url = {https://www.osti.gov/biblio/5694768}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 18 00:00:00 EST 1986},
month = {Tue Mar 18 00:00:00 EST 1986}
}