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    Heat resisting steam turbine rotor
    6.
    发明公开
    Heat resisting steam turbine rotor 失效
    HitzebeständigerDampfturbenenrotor

    公开(公告)号：EP0849434A3

    公开(公告)日：2002-11-06

    申请号：EP98101285.9

    申请日：1990-02-01

    申请人： Hitachi, Ltd.

    发明人： Siga, Masao ,  Fukui, Yutaka ,  Kuriyama, Mitsuo ,  Maeno, Yoshimi ,  Suwa, Masateru ,  Kaneko, Ryoichi ,  Onoda, Takeshi ,  Kajiwara, Hidefumi ,  Watanabe, Yasuo ,  Takahashi, Shintaro ,  Tan, Toshimi

    IPC分类号： F01D5/02 ,  F01D5/06 ,  F01D5/12 ,  F01K23/16

    CPC分类号： F01D5/141 ,  C21D9/38 ,  C21D2211/002 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  F01D5/02 ,  F01D5/06 ,  F01D5/147 ,  F01D5/28 ,  F01D5/288 ,  F05D2300/133 ,  F05D2300/171 ,  Y02E20/16

    摘要： Combined generator system having a gas turbine, a compact steam turbine of high and low pressure portions-integrating type and a generator. The gas turbine comprises a compressor for compressing combustion air, a burner for generating combustion gas, stationary blades for leading the combustion gas in a predetermined direction and a rotor having blades driven by the combustion gas. The steam turbine being provided with a high temperature and high pressure turbine portion, a medium pressure portion into which interheated steam from the high pressure portion is introduced with a high temperature and a medium pressure, and a low pressure portion into which steam from the medium pressure portion is introduced. Further the rotor of this steam turbine is provided with an integrated rotor shaft (3), blades (4) fixed on the rotor shaft in a multistage order from the high pressure side to the low pressure side of the steam, bearings (12) supporting the high and low pressure portions of the rotor, and a casing covering the rotor. The rotor of the steam turbine is designed for a temperature of at least 530 °C at the steam inlet stage blades and the length of the rotor blades (4) at the final stage in the low pressure side of the steam turbine are at least 762 mm.

    摘要翻译： 汽轮机技术领域本发明涉及一种蒸汽涡轮机，其特征在于，包括一转子轴（3），该转子轴（3）整合设有叶片（4）的高压部分和低压部分，其末端具有不小于30英寸的长度，其中第一级叶片（ 4）为530℃，在转子轴（3）的轴承（12）之间限定的长度（L）与在最终级叶片（4）的终端之间测量的直径（D）的比（L / D） ）为1.4〜2.3。 该转子轴（3）由耐热钢，含有0.15〜0.4％C，0.1％以下的Si，0.05〜0.25％的Mn，1.5〜2.5％的Ni，0.8〜2.5％的Cr，0.8〜2.5％ Mo和0.15〜0.35％V，此外，耐热钢可以含有Nb，Ta，W，Ti，Al，Zr，B，Ca和稀土元素中的至少一种。

    Heat resisting steel and turbine rotor
    7.
    发明公开
    Heat resisting steel and turbine rotor 失效
    HitzebeständigerStahl- und Turbinenrotor

    公开(公告)号：EP0761836A1

    公开(公告)日：1997-03-12

    申请号：EP96115660.1

    申请日：1990-02-01

    申请人： HITACHI, LTD.

    发明人： Siga, Masao ,  Fukui, Yutaka ,  Kuriyama, Mitsuo ,  Maeno, Yoshimi ,  Suwa, Masateru ,  Kaneko, Ryoichi ,  Onoda, Takeshi ,  Kajiwara, Hidefumi ,  Watanabe, Yasuo ,  Takahashi, Shintaro ,  Tan, Toshimi

    IPC分类号： C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  F01D5/06

    CPC分类号： F01D5/141 ,  C21D9/38 ,  C21D2211/002 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  F01D5/02 ,  F01D5/06 ,  F01D5/147 ,  F01D5/28 ,  F01D5/288 ,  F05D2300/133 ,  F05D2300/171 ,  Y02E20/16

    摘要： The subject of the invention is a heat resisting steel of Ni-Cr-Mo-V low alloy steel containing, by weight, 0.15 to 0.4 % C, not more than 0.1 % Si, 0.05 to 0.25 % Mn, 1.5 to 2.5 % Ni, 0.8 to 2.5 % Cr, 0.8 to 2.5 % Mo, and 0.15 to 0.35 % V, said steel having a ratio (Mn/Ni) not more than 0.12 and/or a ratio (Si + Mn)/Ni not more than 0.18. Such alloy steel can advantageously be used as a material for an integrated rotor shaft of a steam turbine rotor. This integrated rotor shaft (3) has a bainite structure obtained by a heat treatment, a high temperature strength for withstanding steam temperatures of not less than 530 °C at its high pressure inlet side and a high toughness at low temperatures for withstanding steam temperatures of not more than 100 °C at its low pressure outlet side. The blades of at least the final stage have a length of not less than 760 mm and the ratio L/D of a shaft length (L) between the shaft bearings (12) to the diameter (D) of the rotor in its final stage being 1.4 to 2.3.

    摘要翻译： 本发明的目的是Ni-Cr-Mo-V低合金钢的耐热钢，其含量为0.15〜0.4％C，不大于0.1％Si，0.05〜0.25％Mn，1.5〜2.5％Ni ，0.8〜2.5％的Cr，0.8〜2.5％的Mo和0.15〜0.35％的V，所述钢的比例（Mn / Ni）不大于0.12，和/或比（Si + Mn）/ Ni不大于0.18 。 这种合金钢可以有利地用作蒸汽轮机转子的一体转子轴的材料。 该集成转子轴（3）具有通过热处理获得的贝氏体结构，在其高压入口侧的耐蒸汽温度不低于530℃的高温强度和低温下的高韧性，以承受蒸汽温度 在其低压出口侧不超过100℃。 至少最后阶段的叶片具有不小于760mm的长度，并且轴承（12）中的轴长（L）与其最后阶段中的转子的直径（D）之比L / D 为1.4至2.3。