Arrangement for cooling a condensate being drained from a steam-heated low-pressure heat exchanger, in particular a low-pressure preheater of a steam power station

摘要

In an arrangement for cooling a condensate being drained from a steam-heated low-pressure heat exchanger (1), having a condensate cooler (2) connected downstream of the condensate drain of the low-pressure heat exchanger (1) and a vertically arranged drain loop (11) which is connected downstream of the low-pressure heat exchanger (1) and in which the inlet threshold of the drain loop (11) is situated above the condensate cooler (2), the cold condensate drain of the condensate cooler (2) is connected to the falling branch of the drain loop (11), and in which the level of the connection of the outlet of the cold condensate line (9) in the drain loop (11) is located lower than the normal condensate level (MKNP) in the falling branch (11a), there is arranged in the cold condensate line (9) for the purpose of use in the case of a low-pressure heat exchanger (1) having a condensate cooler (2) integrated in a jacket (3) and arranged below the low-pressure heat exchanger (1) a drain control valve (10) which can be driven by a sensor (7,8) which detects the condensate level in the jacket (3), and the falling branch (11a) of the drain loop (11) is connected to the jacket (3) at a prescribed distance above the normal condensate level (MKNP) in the jacket (3). <IMAGE>