Patent ID: 9169744
Filing Date: 2015-10-27
Classification: F01K

Abstract:
1. A steam power plant comprising: a steam generator; a turbine that expands steam provided by the steam generator; a condenser that condenses expanded steam received from the turbine to provide a condensate; a condensate line that receives the condensate; a condensate pump disposed downstream of the condenser to pass the condensate through the condensate line; at least one preheater disposed downstream of the condensate pump to heat the condensate passing through the condensate line; a feed water container disposed downstream of the at least one preheater to receive the condensate from the at least one preheater via the condensate line; and a heat reservoir having a cold connection and a warm connection and fluidly coupled in parallel to the at least one preheater; a connecting line fluidly coupling the heat reservoir to the condensate line; wherein the connecting line includes a first section and a second section, the first section fluidly coupling the warm connection to the condensate line between the at least one preheater and the feed water reservoir the second section fluidly coupling the cold connection to the condensate line between the condensate pump and the at least one preheater; a first section pump disposed in the first section of the connecting line arranged to provide condensate from the heat reservoir to the condensate line; a second section pump disposed in the second section of the condensate line arranged to provide condensate from the heat reservoir to the condensate line; a first section bypass line fluidly coupled in parallel to the first section of the connecting line to provide condensate preheated by the at least one preheater to the heat reservoir; and a second section bypass line fluidly coupled in parallel to the second section of the connecting line to provide condensate from the connecting line to the heat reservoir.