Rotating electric machine usable in radioactive environment
    4.
    发明授权
    Rotating electric machine usable in radioactive environment 有权
    旋转电机可用于放射性环境

    公开(公告)号:US6093988A

    公开(公告)日:2000-07-25

    申请号:US187484

    申请日:1998-11-06

    CPC分类号: H02K5/04 H02K5/1732

    摘要: The invention relates to a rotating electric machine including (a) a rotor having a rotating shaft; (b) a bearing for supporting the rotating shaft; (c) a radiation resistant grease applied to the bearing; and (d) a shield layer for shielding the grease from radiation. The shield layer is made of lead and surrounds the bearing. The shield layer includes (1) a first cylindrical shield member that is positioned to cover the bearing, such that the bearing is shielded from a first radiation that is in a direction substantially perpendicular to an axis of the rotating shaft, and (2) second and third disk shield members that are positioned to interpose therebetween the bearing in a direction along the axis of the rotating shaft, such that the bearing is shielded from a second radiation that is in a direction substantially along the axis of the rotating shaft. Thus, the rotor of this rotating electric machine is stably supported in the bearing for a long time even under a highly radioactive environment. That is, the rotating electric machine can be rotated stably for a long time.

    摘要翻译: 本发明涉及一种旋转电机,其包括:(a)具有旋转轴的转子; (b)用于支撑旋转轴的轴承; (c)施加到轴承的防辐射油脂; 和(d)用于屏蔽防止辐射的润滑脂的屏蔽层。 屏蔽层由铅制成并围绕轴承。 屏蔽层包括(1)第一圆柱形屏蔽构件,其被定位成覆盖轴承,使得轴承与基本上垂直于旋转轴的轴线的方向上的第一辐射屏蔽,以及(2)第二 以及第三盘屏蔽构件,其定位成沿着所述旋转轴的轴线的方向介于所述轴承之间,使得所述轴承与基本上沿着所述旋转轴的轴线的方向的第二辐射屏蔽。 因此,即使在高放射性环境下,该旋转电机的转子也能够长期稳定地支撑在轴承中。 也就是说,旋转电机可以长时间稳定地旋转。