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    • 8. 发明授权
    • Steam-turbine power plant and steam turbine
    • 蒸汽轮机发电厂和汽轮机
    • US6123504A
    • 2000-09-26
    • US391945
    • 1995-02-21
    • Masao ShigaRyo HiragaTakeshi OnodaNobuo ShimizuNorio YamadaMitsuo KuriyamaKishio HidakaShigeyoshi NakamuraYutaka FukuiToshio Fujita
    • Masao ShigaRyo HiragaTakeshi OnodaNobuo ShimizuNorio YamadaMitsuo KuriyamaKishio HidakaShigeyoshi NakamuraYutaka FukuiToshio Fujita
    • F01D5/02B23K35/00B23K35/30C21D9/38C22C38/00F01D5/14F01D5/28F01D5/30F01D25/00F01K7/22
    • F01D5/28B23K35/308C21D9/38B23K35/004C21D2211/005
    • A steam turbine includes a rotor shaft, movable blades assembled on the rotor shaft, fixed blades for guiding inflow of steam to the moving blades, and an inner casing for holding the fixed blades. The rotor shaft and at least a first stage of the movable blades are made of high-strength martensitic steel comprising 0.05-0.20(%) of C, at most 0.15(%) of Si, 0.3-0.7(%) of Mn, 9.5-13(%) of Cr, 0.3-0.7(%) of Ni, 0.05-0.35(%) of V, 0.02-0.15(%) of Nb, 0.01-0.06(%) of N, 0.05-0.5(%) of Mo, 1.0-3.5(%) of W, 2-10(%) of Co and 0.0005-0.03(%) of B and at least 78(%) of Fe (the percentages being given in terms of weight). The inner casings is made of martensitic cast steel comprising 0.06-0.16(%) of C, at most 0.5(%) of Si, at most 1(%) of Mn, 0.2-1.0(%) of Ni, 8-12(%) of Cr, 0.05-0.35(%) of V, 0.01-0.15(%) of Nb, 0.01-0.1(%) of N, at most 1.5% of Mo, 1-4(%) of W and 0.0005-0.03(%) of B and at least 85(%) of Fe (the percentages being given in terms of weight). The rotor shaft has a length of at least 5 (m) and has a minimum diameter of at least 600 (mm) at a portion where the fixed blades are assembled. The first stage of said moving blades has a length of at least 35 (mm) at a blade portion thereof.
    • 蒸汽涡轮机包括转子轴,组装在转子轴上的可动叶片,用于引导蒸汽流入活动叶片的固定叶片以及用于保持固定叶片的内壳体。 转子轴和可动刀片的至少第一级由高强度马氏体钢制成,包括0.05-0.20(%)C,最多0.15(%)的Si,0.3-0.7(%)的Mn,9.5 -13(%)Cr,0.3-0.7(%)Ni,0.05-0.35(%)V,0.02-0.15(%)Nb,0.01-0.06(%)N,0.05-0.5(%) 的Mo,1.0-3.5(%)W,2-10(%)Co和0.0005-0.03(%)B和至少78(%)Fe(百分比以重量计)。 内壳由马氏体铸钢制成,包括C:0.06-0.16(%),最多0.5(%)Si,最多1(%)Mn,0.2-1.0(%)Ni,8-12( %),V 0.05〜0.35(%),Nb:0.01-0.15(%),N:0.01-0.1(%),Mo:1.5%以下,W:1-4(%):0.0005〜 B的0.03(%)和Fe的至少85(%)(以重量计)。 转子轴具有至少5(m)的长度,并且在组装固定叶片的部分处具有至少600(mm)的最小直径。 所述活动叶片的第一阶段在叶片部分处具有至少35(mm)的长度。
    • 9. 发明授权
    • High and low pressure sides-integrating system turbine, long blades thereof and combined cycle power generation system
    • 高低压侧系统涡轮,长叶片和联合循环发电系统
    • US06182439B2
    • 2001-02-06
    • US09385139
    • 1999-08-31
    • Masao SigaTakeshi OnodaShigeyoshi NakamuraRyo Hiraga
    • Masao SigaTakeshi OnodaShigeyoshi NakamuraRyo Hiraga
    • F01D528
    • F01D5/142C22C38/001C22C38/46C22C38/48F01D5/141F01D5/28F05D2240/60F05D2300/171
    • A combined cycle power generation system in which a generator is driven by a steam turbine and a gas turbine includes a steam turbine rotor having a mono-block rotor shaft with blades mounted thereon in multi-stages from a high pressure side to a low pressure side and a casing covering the rotor. An inlet temperature of steam to first stage blades is not less than 530° C. and the rotor shaft is made of a Ni—Cr—Mo—V low alloy steel of bainitic structure having a higher creep rupture strength at the high pressure side than at the low pressure side and a 538° C. and 105 h creep rupture strength not less than 12 kg/mm2 at a central portion, and having mounted thereon at the central portion, first stage blades at the high pressure side or FATT of not more than 20° C. Final stage blades are mounted at the low pressure side having a room temperature V-notch impact value of not less than 4 kg/m, and blades of at least a final stage have a value of blade length in inches times revolution in rpm of not less than 125,000 and are made of martensite stainless steel including 8-13 wt. % Cr.
    • 发电机由蒸汽轮机和燃气轮机驱动的联合循环发电系统包括具有单块转子轴的汽轮机转子,该单块转子轴具有从高压侧到低压侧多级安装的叶片 以及覆盖转子的壳体。 第一级叶片的蒸汽入口温度不低于530℃,转子轴由高压侧具有较高蠕变断裂强度的贝氏体组织的Ni-Cr-Mo-V低合金钢制成, 在低压侧,538℃和105h蠕变断裂强度在中心部分不小于12kg / mm2,并且在中心部分安装在其上,在高压侧的第一级叶片或不是FATT的FATT 超过20℃。最终级叶片安装在低压侧,其室温V形缺口冲击值不小于4kg / m,并且至少最后一级的叶片具有以英寸为单位的叶片长度的值 转速不低于125,000 rpm,由马氏体不锈钢制成,包括8-13wt。 %Cr。