| 摘要 |
PURPOSE:To prevent the occurrence of excessive thermal stress against machinery and equipment available as well as to aim at improvements in heat recovery, by leading high pressure steam into a vortex tube device, then cooling a turbine with low temperature steam and driving the turbine or performing its feed water heating with the high pressure steam. CONSTITUTION:A steam turbine plant consists of a boiler 1, steam turbines 2-5, a condenser 7 and a feed water system. The partial steam produced in the boiler 1 is led into a vortex tube device 22 through which separation into high pressure steam and low temperature steam takes place. Heat recovery also takes place in a way of interconnecting high and pressure steam 25 to an exhaust system 15 of a superhigh pressure turbine 2. Likewise, high and low pressure steam 23 is interconnected to a cooling system of the superhigh pressure turbine 2. In this manner, not only the occurrence of excessive thermal stress against machinery and equipment available can be prevented but also heat recovery from the steam that is used for cooling can be brought about. |
