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    Steam turbine power-generation plant and steam turbine
    4.
    发明授权
    Steam turbine power-generation plant and steam turbine 有权
    蒸汽轮机发电厂和汽轮机

    公开(公告)号：US06358004B1

    公开(公告)日：2002-03-19

    申请号：US09605673

    申请日：2000-06-28

    申请人： Masao Shiga ,  Takeshi Onoda ,  Shigeyoshi Nakamura ,  Yutaka Fukui

    发明人： Masao Shiga ,  Takeshi Onoda ,  Shigeyoshi Nakamura ,  Yutaka Fukui

    IPC分类号： F01D102

    CPC分类号： C22C38/46 ,  C22C38/44 ,  F01D5/28

    摘要： A compact steam turbine power-generation plant has a compact steam turbine that operates at a high temperature in a range of 600 to 660° C. Ferrite based heat resisting steels provide for thermal efficiency. The main steam temperature and the reheated steam temperature can be set in a range of 600 to 660° C. by making the main parts exposed to the high temperature atmosphere, such as the rotor shaft, from ferrite based forged steels and cast steels and by making a final stage blade of a low pressure turbine from a martensite steel. The final stage blade is made from a ferrite based forged steel having a tensile strength of 120 kgf/mm2 or more; the rotor shaft is made from a ferrite based forged steel having a 105 h creep rupture strength of 11 kgf/mm2 or more; and the inner casing is made from a ferrite based cast steel having a 105 h creep rupture strength of 10 kgf/mm2 or more.

    摘要翻译： 紧凑型蒸汽轮机发电厂具有紧凑型蒸汽轮机，其工作温度高达600至660°C。铁素体耐热钢可提供热效率。 主蒸汽温度和再热蒸汽温度可以设定在600至660℃的范围内，通过使主要部件暴露于诸如转子轴的高温气氛中，从铁素体锻造钢和铸钢以及由 从马氏体钢制成低压涡轮机的末级叶片。 末级叶片由抗拉强度为120kgf / mm2以上的铁素体型锻钢制成， 转子轴由105h蠕变断裂强度为11kgf / mm2以上的铁素体锻造钢制成， 并且内壳由具有105kg蠕变断裂强度为10kgf / mm 2以上的铁素体铸钢制成。

    Method of making a turbine blade
    5.
    发明授权
    Method of making a turbine blade 有权
    制造涡轮叶片的方法

    公开(公告)号：US06305078B1

    公开(公告)日：2001-10-23

    申请号：US09605674

    申请日：2000-06-28

    申请人： Masao Shiga ,  Takeshi Onoda ,  Shigeyoshi Nakamura ,  Yutaka Fukui

    发明人： Masao Shiga ,  Takeshi Onoda ,  Shigeyoshi Nakamura ,  Yutaka Fukui

    IPC分类号： B23P1500

    CPC分类号： F01D5/28 ,  C22C38/44 ,  C22C38/46 ,  Y10T29/49316 ,  Y10T29/49336

    摘要： A compact steam turbine power-generation plant has a compact steam turbine that operates at a high temperature in a range of 600 to 660° C. Ferrite based heat resisting steels provide for thermal efficiency. The main steam temperature and the reheated steam temperature can be set in a range of 600 to 660° C. by making the main parts exposed to the high temperature atmosphere, such as the rotor shaft, from ferrite based forged steels and cast steels and by making a final stage blade of a low pressure turbine from a martensite steel. The final stage blade is made from a ferrite based forged steel having a tensile strength of 120 kgf/mm2 or more; the rotor shaft is made from a ferrite based forged steel having a 105 h creep rupture strength of 11 kgf/mm2 or more; and the inner casing is made from a ferrite based cast steel having a 105 h creep rupture strength of 10 kgf/mm2 or more.

    摘要翻译： 紧凑型蒸汽轮机发电厂具有紧凑型蒸汽轮机，其工作温度高达600至660°C。铁素体耐热钢可提供热效率。 主蒸汽温度和再热蒸汽温度可以设定在600至660℃的范围内，通过使主要部件暴露于诸如转子轴的高温气氛中，从铁素体锻造钢和铸钢以及由 从马氏体钢制成低压涡轮机的末级叶片。 末级叶片由抗拉强度为120kgf / mm2以上的铁素体型锻钢制成， 转子轴由105h蠕变断裂强度为11kgf / mm2以上的铁素体锻造钢制成， 并且内壳由具有105kg蠕变断裂强度为10kgf / mm 2以上的铁素体铸钢制成。

    Steam turbine power-generation plant and steam turbine
    7.
    发明授权
    Steam turbine power-generation plant and steam turbine 有权
    蒸汽轮机发电厂和汽轮机

    公开(公告)号：US6129514A

    公开(公告)日：2000-10-10

    申请号：US125206

    申请日：1998-08-13

    申请人： Masao Shiga ,  Takeshi Onoda ,  Shigeyoshi Nakamura ,  Yutaka Fukui

    发明人： Masao Shiga ,  Takeshi Onoda ,  Shigeyoshi Nakamura ,  Yutaka Fukui

    IPC分类号： C22C38/44 ,  C22C38/46 ,  F01D5/28 ,  F01D1/02

    CPC分类号： F01D5/28 ,  C22C38/44 ,  C22C38/46

    摘要： A compact steam turbine power-generation plant has a compact steam turbine that operates at a high temperature in a range of 600 to 660.degree. C. Ferrite based heat resisting steels provide for thermal efficiency. The main steam temperature and the reheated steam temperature can be set in a range of 600 to 660.degree. C. by making the main parts exposed to the high temperature atmosphere, such as the rotor shaft, from ferrite based forged steels and cast steels and by making a final stage blade of a low pressure turbine from a martensite steel. The final stage blade is made from a ferrite based forged steel having a tensile strength of 120 kgf/mm.sup.2 or more; the rotor shaft is made from a ferrite based forged steel having a 10.sup.5 h creep rupture strength of 11 kgf/mm.sup.2 or more; and the inner casing is made from a ferrite based cast steel having a 10.sup.5 h creep rupture strength of 10 kgf/mm.sup.2 or more.

    摘要翻译： PCT No.PCT / JP96 / 00336 Sec。 371日期1998年8月13日 102（e）1998年8月13日PCT PCT 1996年2月16日PCT公布。 公开号WO97 / 30272 日期1997年8月21日紧凑型蒸汽轮机发电厂有一台紧凑型蒸汽轮机，工作温度范围在600至660℃之间。铁素体耐热钢可提供热效率。 主蒸汽温度和再热蒸汽温度可以设定在600至660℃的范围内，通过使主要部件暴露于诸如转子轴的高温气氛中，从铁素体锻造钢和铸钢以及通过 从马氏体钢制成低压涡轮机的末级叶片。 末级叶片由抗拉强度为120kgf / mm2以上的铁素体型锻钢制成， 转子轴由105h蠕变断裂强度为11kgf / mm2以上的铁素体锻造钢制成， 并且内壳由具有105kg蠕变断裂强度为10kgf / mm 2以上的铁素体铸钢制成。

    Steam-turbine power plant and steam turbine
    8.
    发明授权
    Steam-turbine power plant and steam turbine 失效
    蒸汽轮机发电厂和汽轮机

    公开(公告)号：US6123504A

    公开(公告)日：2000-09-26

    申请号：US391945

    申请日：1995-02-21

    申请人： Masao Shiga ,  Ryo Hiraga ,  Takeshi Onoda ,  Nobuo Shimizu ,  Norio Yamada ,  Mitsuo Kuriyama ,  Kishio Hidaka ,  Shigeyoshi Nakamura ,  Yutaka Fukui ,  Toshio Fujita

    发明人： Masao Shiga ,  Ryo Hiraga ,  Takeshi Onoda ,  Nobuo Shimizu ,  Norio Yamada ,  Mitsuo Kuriyama ,  Kishio Hidaka ,  Shigeyoshi Nakamura ,  Yutaka Fukui ,  Toshio Fujita

    IPC分类号： F01D5/02 ,  B23K35/00 ,  B23K35/30 ,  C21D9/38 ,  C22C38/00 ,  F01D5/14 ,  F01D5/28 ,  F01D5/30 ,  F01D25/00 ,  F01K7/22

    CPC分类号： F01D5/28 ,  B23K35/308 ,  C21D9/38 ,  B23K35/004 ,  C21D2211/005

    摘要： 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.

    摘要翻译： 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。

    Steam turbine blade, method of manufacturing the same, steam turbine power generating plant and low pressure steam turbine
    9.
    发明授权
    Steam turbine blade, method of manufacturing the same, steam turbine power generating plant and low pressure steam turbine 有权
    蒸汽轮机叶片及其制造方法，蒸汽轮机发电厂和低压汽轮机

    公开(公告)号：US06206634B1

    公开(公告)日：2001-03-27

    申请号：US09369166

    申请日：1999-08-05

    申请人： Hiroyuki Doi ,  Mitsuo Kuriyama ,  Shigeyoshi Nakamura ,  Shinya Imano ,  Takeshi Onoda

    发明人： Hiroyuki Doi ,  Mitsuo Kuriyama ,  Shigeyoshi Nakamura ,  Shinya Imano ,  Takeshi Onoda

    IPC分类号： F01D102

    CPC分类号： C22C14/00 ,  C22C38/44 ,  C22C38/46 ,  C22C38/52 ,  C22F1/183 ,  F01D5/28 ,  F05D2220/31 ,  F05D2300/133 ,  Y10T29/49336 ,  Y10T29/49339

    摘要： There is provided a steam turbine blade made of Ti-base alloy comprising an &agr;+&bgr; type phase in which a difference of a tensile strength is small between a blade portion and a dovetail portion, a tensile strength at a room temperature of the dovetail portion is equal to or more than 100 kg/mm2 and a suitable toughness is commonly provided together with a strength, as a steam turbine blade having a length of 43 inch or more, a method of manufacturing the same, a steam turbine power generating plant and a low pressure steam turbine. In the steam turbine blade having a blade portion and a plurality of fork type dovetails, wherein the blade is made of Ti-base alloy structured such that a length of the blade portion is equal to or more than 52 inches with respect to a rotational speed 3000 rpm of the blade or equal to or more than 43 inches with respect to the rotational speed 3600 rpm, and a tensile strength at a room temperature of the dovetail is equal to or more than 100 kg/mm2, preferably equal to or more than 110 kg/mm2 and equal to or more than 96% of the tensile strength at the room temperature of the blade portion.

    摘要翻译： 提供了一种由Ti基合金制成的汽轮机叶片，其包括α+β型相，其中叶片部分和燕尾部分之间的拉伸强度差异小，燕尾部分的室温下的拉伸强度 等于或大于100kg / mm2，并且合适的韧性通常与强度一起提供，作为具有43英寸或更长的长度的蒸汽轮机叶片，其制造方法，蒸汽轮机发电设备和 低压蒸汽轮机。 在具有叶片部分和多个叉形燕尾形的汽轮机叶片中，其中叶片由Ti基合金制成，使得叶片部分的长度相对于转速等于或大于52英寸 相对于转速3600rpm等于或大于43英寸，燕尾榫的室温拉伸强度等于或大于100kg / mm2，优选等于或大于等于或大于 110kg / mm2，等于或大于在叶片部分的室温下的拉伸强度的96％。

    Method of making steam turbine blade
    10.
    发明授权
    Method of making steam turbine blade 有权
    制造汽轮机叶片的方法

    公开(公告)号：US06493936B2

    公开(公告)日：2002-12-17

    申请号：US09766978

    申请日：2001-01-23

    申请人： Hiroyuki Doi ,  Mitsuo Kuriyama ,  Shigeyoshi Nakamura ,  Shinya Imano ,  Takeshi Onoda

    发明人： Hiroyuki Doi ,  Mitsuo Kuriyama ,  Shigeyoshi Nakamura ,  Shinya Imano ,  Takeshi Onoda

    IPC分类号： B23P1500

    CPC分类号： C22C14/00 ,  C22C38/44 ,  C22C38/46 ,  C22C38/52 ,  C22F1/183 ,  F01D5/28 ,  F05D2220/31 ,  F05D2300/133 ,  Y10T29/49336 ,  Y10T29/49339

    摘要： A steam turbine blade made of Ti-base alloy comprising an &agr;+&bgr; type phase in which a difference of a tensile strength is small between a blade portion and a dovetail portion, a tensile strength at a room temperature of the dovetail portion is equal to or more than 100 kg/mm2 and a suitable toughness is commonly provided together with a strength, as a steam turbine blade having a length of 43 inch or more, a method of manufacturing the same, a steam turbine power generating plant and a low pressure steam turbine. In the steam turbine blade having a blade portion and a plurality of fork type dovetails, wherein the blade is made of Ti-base alloy structured such that a length of the blade portion is equal to or more than 52 inches with respect to a rotational speed 3000 rpm of the blade or equal to or more than 43 inches with respect to the rotational speed 3600 rpm, and a tensile strength at a room temperature of the dovetail is equal to or more than 100 kg/mm2, preferably equal to or more than 110 kg/mm2 and equal to or more than 96 % of the tensile strength at the room temperature of the blade portion.

    摘要翻译： 一种由钛基合金制成的汽轮机叶片，其包括在叶片部分和燕尾形部分之间拉伸强度差小的α+β型相，燕尾部分室温下的拉伸强度等于 或大于100kg / mm 2，并且合适的韧性通常与强度一起提供，作为具有43英寸或更长的长度的蒸汽轮机叶片，其制造方法，蒸汽轮机发电设备和低压 汽轮机。 在具有叶片部分和多个叉形燕尾形的汽轮机叶片中，其中叶片由Ti基合金制成，使得叶片部分的长度相对于转速等于或大于52英寸 相对于转速3600rpm等于或大于43英寸，燕尾榫的室温拉伸强度等于或大于100kg / mm2，优选等于或大于等于或大于 110kg / mm2，等于或大于在叶片部分的室温下的拉伸强度的96％。