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

Patent · Tue Feb 15 04:00:00 EST 1977

OSTI ID:7294418

Braytenbah, A S; Jaegtnes, K O

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

• Assignee: Westinghouse Electric Corp.
• Patent Number(s): US 4007595
• OSTI ID: 7294418
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
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Graphite Moderated
BYPASSES
CONTROL SYSTEMS
DESIGN
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GAS COOLED REACTORS
GRAPHITE MODERATED REACTORS
HTGR TYPE REACTORS
REACTORS
STEAM SYSTEMS
TURBOGENERATORS