| 摘要 |
It is very complicated and costly, from a construction point of view, to provide each stage of the superheaters (1, 2, 3) having a plurality of stages of steam generators, with a water level indicator enabling to monitor the condensate quantities in the superheaters and to discharge the quantity exceeding a certain limit value. Return valves (22) are arranged in water removal conduits (12, 13, 15, 16 17) which are not provided with a water level indicator (18). All water removal conduits form together with the drain collector (23) a system of communicating vessels. The collector (23) may be evacuated through an outlet conduit (24) and a cut-off valve (25) controlled by the water level indicator (18). |
