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Title: Dual turbine power plant and a reheat steam bypass flow control system for use therein

Abstract

An electric power plant having dual turbine-generators connected to a steam source that includes a high temperature gas cooled nuclear reactor is described. Each turbine comprises a high pressure portion operated by superheat steam and an intermediate-low pressure portion operated by reheat steam; a bypass line is connected across each turbine portion to permit a desired minimum flow of steam from the source at times when the combined flow of steam through the turbine is less than the minimum. Coolant gas is propelled through the reactor by a circulator which is driven by an auxiliary turbine which uses steam exhausted from the high pressure portions and their bypass lines. The pressure of the reheat steam is controlled by a single proportional-plus-integral controller which governs the steam flow through the bypass lines associated with the intermediate-low pressure portions. At times when the controller is not in use its output signal is limited to a value that permits an unbiased response when pressure control is resumed, as in event of a turbine trip. 25 claims, 2 figures

Inventors:
;
Publication Date:
OSTI Identifier:
7294418
Patent Number(s):
US 4007595
Application Number:
TRN: 77-010532
Assignee:
Westinghouse Electric Corp.
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 30 Sep 1975
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; HTGR TYPE REACTORS; STEAM SYSTEMS; TURBOGENERATORS; CONTROL SYSTEMS; BYPASSES; DESIGN; ELECTRIC GENERATORS; GAS COOLED REACTORS; GRAPHITE MODERATED REACTORS; REACTORS; 210300* - Power Reactors, Nonbreeding, Graphite Moderated

Citation Formats

Braytenbah, A S, and Jaegtnes, K O. Dual turbine power plant and a reheat steam bypass flow control system for use therein. United States: N. p., 1977. Web.
Braytenbah, A S, & Jaegtnes, K O. Dual turbine power plant and a reheat steam bypass flow control system for use therein. United States.
Braytenbah, A S, and Jaegtnes, K O. 1977. "Dual turbine power plant and a reheat steam bypass flow control system for use therein". United States.
@article{osti_7294418,
title = {Dual turbine power plant and a reheat steam bypass flow control system for use therein},
author = {Braytenbah, A S and Jaegtnes, K O},
abstractNote = {An electric power plant having dual turbine-generators connected to a steam source that includes a high temperature gas cooled nuclear reactor is described. Each turbine comprises a high pressure portion operated by superheat steam and an intermediate-low pressure portion operated by reheat steam; a bypass line is connected across each turbine portion to permit a desired minimum flow of steam from the source at times when the combined flow of steam through the turbine is less than the minimum. Coolant gas is propelled through the reactor by a circulator which is driven by an auxiliary turbine which uses steam exhausted from the high pressure portions and their bypass lines. The pressure of the reheat steam is controlled by a single proportional-plus-integral controller which governs the steam flow through the bypass lines associated with the intermediate-low pressure portions. At times when the controller is not in use its output signal is limited to a value that permits an unbiased response when pressure control is resumed, as in event of a turbine trip. 25 claims, 2 figures},
doi = {},
url = {https://www.osti.gov/biblio/7294418}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 15 00:00:00 EST 1977},
month = {Tue Feb 15 00:00:00 EST 1977}
}