Water/steam cycle and method for operating the same
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United States of America Patent
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Sep 27, 2016
Grant Date -
Nov 13, 2014
app pub date -
Jul 25, 2014
filing date -
Feb 10, 2012
priority date (Note) -
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Abstract
A water/steam cycle includes a steam generator, a steam turbine, a water cooled condenser and a feedwater pump. The condenser includes within a condenser shell at least one tube bundle with an internal air cooler, which is connected to an external ejector/vacuum pump by means of a suction line. In order to reduce the condenser evacuation time at the start-up of the water/steam cycle without using auxiliary steam, an additional evacuation line with a motorized isolating valve connects the external ejector/vacuum pump with the condenser shell. The action of the isolating valve is controlled by means of a control.
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