| 摘要 |
PROBLEM TO BE SOLVED: To suppress occurrence of droplet impact erosion within a drain pipe and a drain collecting pipe.SOLUTION: Drain pipes 3a, 3b, 3c made from low alloy steel are communicated with a steam condenser 8 through a drain collecting pipe 4 made from low alloy steel. A pressure control valve 7 is provided in the drain collecting pipe 4 at the proximity of the steam condenser 8 to control a pressure in the drain collecting pipe 4, thereby achieving a steam flow speed of 90 m/s or less within the drain collecting pipe 4. |
