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    • 9. 发明公开
    • Bolted joint for rotor disks and method of reducing thermal gradients therein
    • SchraubverbindungfürTurbinenläuferund Methode zur Verringerung derWärmegradientendarin
    • EP1217231A1
    • 2002-06-26
    • EP01310609.1
    • 2001-12-19
    • GENERAL ELECTRIC COMPANY
    • Pepi, Jason FrancisDix, Brian EdwardHooper, Tyler Frederick
    • F16B39/01
    • F16B35/041F16B5/0275F16B39/01
    • Bolt hole stress in rotor disks having bolted joints is reduced by passing relatively hot secondary flow path air (such as compressor discharge air) through each bolt hole (70) to heat the disk (40) from inside the bolt hole (70). In doing so, the temperature distribution in the area of the bolt hole (70) is made more uniform and the stress is dramatically reduced. The bolted joint (52) includes a bolt hole (70) formed in a first rotor disk (40) and a bolt (66) disposed in the bolt hole (70) such that a channel (84) is defined between the bolt (66) and the bolt hole (70). A first nut (74) or abutment is attached to a first end of the bolt (66), and a second nut (76) or abutment is attached to a second end of the bolt (66). A first passage (86) associated with the first abutment (74) provides fluid communication with the channel (84), and a second passage (88) associated with the second abutment (76) provides fluid communication with the channel (84), thereby allowing the relatively hot fluid to pass through the channel (84) during engine operation.
    • 通过使相对热的二次流路空气(例如压缩机排出空气)通过每个螺栓孔(70)从螺栓孔(70)的内部加热盘(40)来减少具有螺栓接头的转子盘中的螺栓孔应力。 在这样做时,螺栓孔(70)的区域中的温度分布变得更均匀,并且应力显着降低。 螺栓接头(52)包括形成在第一转子盘(40)中的螺栓孔(70)和设置在螺栓孔(70)中的螺栓(66),使得通道(84)被限定在螺栓 )和螺栓孔(70)。 第一螺母(74)或邻接件附接到螺栓(66)的第一端,并且第二螺母(76)或邻接件附接到螺栓(66)的第二端。 与第一基台(74)相关联的第一通道(86)提供与通道(84)的流体连通,并且与第二基台(76)相关联的第二通道(88)提供与通道(84)的流体连通,从而 允许相对热的流体在发动机操作期间通过通道(84)。