| 摘要 |
FIELD: power engineering. ^ SUBSTANCE: invention relates to steam-turbine plants in which steam from turbine is directed into steam condenser, and it can be used for turbines of mean and large power rating. Proposed low-pressure part of steam-turbine plant includes exhaust branch pipe of turbine installed on bed frame, and condenser arranged under exhaust branch pipe and connected with its lower part by adapter branch pipe. Upper part of exhaust branch pipe is connected with adapter branch pipe by bypass pipes arranged from both sides of bed frame. Moreover, adapter branch pipe is provided with additional sections with ports projecting beyond the bed frame of turbine to which bypass pipes are connected. Proposed invention makes it possible to eliminate design drawbacks of known device, namely, reduce velocity of steam at inlet of adapter branch pipe and reduce height of adapter branch pipe, equalize steam velocity field at inlet of heat exchange part of condenser at tolerable velocities of steam getting into tube banks without increase of cross dimensions of turbine and its bed frame, reduce aerodynamic losses in exhaust branch pipe of turbine. ^ EFFECT: increased economy of low pressure part, improved characteristics of said part. |
