Methods and apparatus for extending gas turbine engine airfoils useful life
    1.
    发明授权
    Methods and apparatus for extending gas turbine engine airfoils useful life 有权
    扩大燃气轮机发动机翼型的使用寿命的方法和装置

    公开(公告)号:US06932570B2

    公开(公告)日:2005-08-23

    申请号:US10155452

    申请日:2002-05-23

    摘要: A method enables a gas turbine engine blade to be manufactured to include an airfoil, a platform, a shank, and a dovetail. The platform extends between the airfoil and the shank, the shank extends between the dovetail and the platform, and the dovetail includes at least one tang for securing the blade within the engine. The method comprises defining a cooling cavity in the blade that extends through the airfoil, the platform, the shank, and the dovetail, such that a portion of the cavity defined within the dovetail includes a root passage portion having a first width, and a transition portion extending between the root passage and the portion of the cavity defined within the shank, and wherein the portion of the cavity defined within the shank has a second width that is larger than the root passage first width. The blade is then coated with an environmental resistive coating.

    摘要翻译: 一种方法能够使燃气涡轮发动机叶片制造成包括翼型件,平台,柄和燕尾榫。 平台在翼型件和柄之间延伸,柄部在燕尾榫和平台之间延伸,并且燕尾榫包括用于将叶片固定在发动机内的至少一个柄脚。 该方法包括限定叶片中的冷却空腔,其延伸穿过翼型件,平台,柄部和燕尾榫,使得限定在燕尾榫内部的空腔的一部分包括具有第一宽度的根部通道部分和过渡部分 所述部分在所述根部通道和限定在所述柄部内的所述腔的部分之间延伸,并且其中限定在所述柄内的所述腔的所述部分具有大于所述根部通道第一宽度的第二宽度。 然后用环保电阻涂层涂覆刀片。