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    • 44. 发明专利
    • Turbine rotor and steam turbine
    • 涡轮转子和蒸汽涡轮机
    • JP2008151013A
    • 2008-07-03
    • JP2006338937
    • 2006-12-15
    • Toshiba Corp株式会社東芝
    • YAMASHITA KATSUYAINUKAI TAKAO
    • F01D5/08F01D5/06F01D25/00F01D25/08F01D25/12
    • F01D5/026F01D5/063F05D2220/31F05D2230/232F05D2260/201F05D2260/2322
    • PROBLEM TO BE SOLVED: To provide a turbine rotor and steam turbine that can suppress the generation of thermal stresses at welds, achieve the enhancement in thermal efficiency by driving with a hot steam, and has an excellent reliability. SOLUTION: A turbine rotor 300 is cooled in such a manner that a hot turbine rotor component 301 through which a hot steam passes; and a cold turbine rotor component 302 coupled by welding to sandwich the hot turbine rotor component 301 therewith, formed of different material from that of the hot turbine rotor component 301, and the hot turbine rotor component 301 in the proximity of a weld 120 between the hot turbine rotor component 301 and the cold turbine rotor component 302 are cooled together by a cooling steam 240. It is configured such that a value obtained by dividing the distance from the location of the hot turbine rotor component 301 where the cooling steam 240 is sprayed to the weld 120 by the diameter of the hot turbine rotor component 301 comes to be 0.3 or over. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了提供能够抑制焊接处的热应力产生的涡轮转子和蒸汽轮机,通过用热蒸汽驱动来实现热效率的提高,并且具有优异的可靠性。 解决方案:涡轮转子300以热蒸汽通过的热涡轮转子部件301的方式冷却; 以及冷却涡轮机转子部件302,其通过焊接耦合以将热涡轮转子部件301与由热涡轮转子部件301的不同材料形成的热涡轮转子部件301,以及在涡轮转子部件301之间的焊接部120附近的热涡轮转子部件301 热涡轮转子部件301和冷涡轮转子部件302通过冷却蒸汽240一起冷却。其构造成使得通过将从冷却蒸汽240喷射的热涡轮转子部件301的位置的距离除以获得的值 通过热涡轮转子部件301的直径到达焊接部120为0.3以上。 版权所有(C)2008,JPO&INPIT