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    • 38. 发明公开
    • Steam cooling system for a gas turbine
    • Dampfkühlungssystemfüreine Gasturbine
    • EP1079069A2
    • 2001-02-28
    • EP00304909.5
    • 2000-06-09
    • GENERAL ELECTRIC COMPANY
    • Wilson, Ian DavidBarb, Kevin JosephLi, Ming ChengHyde, Susan MarieMashey, Thomas CharlesWesorick, Ronald RichardGlynn, Christopher CharlesHemsworth, Martin C.
    • F01D5/08F02C7/16
    • F01D5/085F02C7/16F05D2260/2322Y02T50/676
    • The steam cooling circuit for a gas turbine includes a bore tube assembly (48) supplying steam to circumferentially spaced radial tubes (54) coupled to supply elbows (206) for transitioning the radial steam flow in an axial direction along steam supply tubes (56) adjacent the rim of the rotor. The supply tubes supply steam to circumferentially spaced manifold segments (120) located on the aft side of the 1-2 spacer for supplying steam to the buckets (22, 24) of the first and second stages. Spent return steam from these buckets flows to a plurality of circumferentially spaced return manifold segments disposed on the forward face of the 1-2 spacer. Crossover tubes (146) couple the steam supply from the steam supply manifold segments through the 1-2 spacer to the buckets (22) of the first stage. Crossover tubes (196) through the 1-2 spacer also return steam from the buckets of the second stage to the return manifold segments. Axially extending return tubes (58) convey spent cooling steam from the return manifold segments to radial tubes (80) via return elbows (216).
    • 用于燃气涡轮机的蒸汽冷却回路包括孔管组件(48),用于将蒸汽供应到与供应弯头(206)相连的周向间隔开的径向管(54),用于沿着沿着蒸汽供应管(56)的轴向转换径向蒸汽流, 邻近转子的边缘。 供应管向位于1-2间隔件的后侧的周向隔开的歧管段(120)供应蒸汽,以将蒸汽供应到第一和第二级的桶(22,24)。 来自这些铲斗的废水返回蒸汽流向设置在1-2间隔物的前表面上的多个周向间隔开的返回歧管段。 交叉管(146)将来自蒸汽供应歧管段的蒸汽供应通过1-2间隔件耦合到第一级的桶(22)。 通过1-2间隔物的交叉管(196)还将蒸汽从第二级的桶返回到回流歧管段。 轴向延伸的返回管(58)通过返回弯头(216)将废冷却蒸汽从返回歧管段传送到径向管(80)。