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    • 3. 发明公开
    • TURBINE ROTOR AND TURBOCHARGER INCORPORATING SUCH TURBINE ROTOR
    • TURBINENROTOR UND TURBOLADER MIT SOLCH EINEM TURBINENROTOR
    • EP2960463A4
    • 2016-04-13
    • EP13875417
    • 2013-02-22
    • MITSUBISHI HEAVY IND LTD
    • OTSUBO HITOMIARAI TAKASHINAKAGAWA HIROSHIYAMAGUCHI HIDEKIYOSHIDA MASAKAZU
    • F02B39/00F01D5/02F01D5/04F02B39/16
    • F01D5/027F01D5/04F01D5/048F01D5/28F05D2220/40F05D2300/174
    • A turbine rotor comprising: a turbine wheel 5 obtainable by precision casting of titanium aluminide, including a hub 50 extending along a rotational center of the turbine wheel, and a plurality of impellers 40 arranged along a circumferential direction around an outer circumference of the hub, and having a web-like scallop 30 formed by making a cutout between adjacent impellers among the plurality of the impellers; and a rotor shaft 7 extending along the rotational center line C-C of the turbine wheel on a back side of the hub of the turbine wheel; wherein the turbine wheel has a balance cut portion 11 arranged along the circumferential direction of the rotational turbine wheel on the back side of the hub of the turbine wheel, wherein an area of the balance correcting part arranged in the circumferential direction is placed so that a balance cut minimum diameter BCmin is larger than a maximum diameter of the rotor shaft on the wheel mounting side, and that a balance cut maximum diameter BCmax is smaller than a scallop diameter S of the turbine wheel, and that a thickness t from the back side of the turbine wheel to a surface of the hub satisfies 1.75t‰¥w, where w is a width in a radial direction of the area arranged in the circumferential direction (i.e. balance cut).
    • 一种涡轮转子,其特征在于,包括:通过精密铸造钛酸铝而获得的涡轮机轮5,其包括沿涡轮机叶轮的旋转中心延伸的轮毂50以及围绕轮毂的外周沿圆周方向布置的多个叶轮40, 并且具有通过在多个叶轮之间的相邻叶轮之间形成切口而形成的网状扇贝30; 以及转子轴7,其沿着涡轮机叶轮的轮毂的后侧​​沿着涡轮机叶轮的旋转中心线C-C延伸; 其特征在于,所述涡轮机叶轮具有在所述涡轮机叶轮的所述轮毂的背侧沿着所述旋转涡轮机叶轮的圆周方向配置的平衡切割部11,其中,所述平衡校正部的沿圆周方向配置的区域被配置为 平衡切割最小直径BCmin大于轮安装侧的转子轴的最大直径,平衡切割最大直径BCmax小于涡轮机叶轮的扇形直径S,并且来自后侧的厚度t 涡轮机轮毂到轮毂表面的距离满足1.75t‰,其中w是沿圆周方向排列的区域的径向宽度(即平衡切削)。