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    • 9. 发明授权
    • Air sealed turbine blades
    • 空气密封的涡轮叶片
    • US4732531A
    • 1988-03-22
    • US941067
    • 1986-12-12
    • Mitsuhiro MinodaShigeo InoueHiroshi UsuiHiroyuki Nouse
    • Mitsuhiro MinodaShigeo InoueHiroshi UsuiHiroyuki Nouse
    • F04D29/54F01D11/08F01D11/10F04D29/16F01D11/00
    • F01D11/10Y10S415/914
    • A gas turbine has a casing forming a fluid passage through which a primaryluid flows, and a rotor blade disposed in the fluid passage with a clearance between distal ends of the rotor blades and the casing. The casing has a plurality of spaced blow holes extending circumferentially thereof for communicating an external secondary fluid chamber with the clearance, the blow holes being formed at an incline with respect to the wall of the casing in such a manner that a secondary fluid discharged from the blow holes is imparted with a flow component that opposes a flow of the primary fluid leaking from the clearance. The amount of the secondary fluid discharged from the blow holes and the discharge pressure are controlled to hydromechanically vary the resistance which the secondary fluid offers to the primary fluid leakage flow, thereby making it possible to mimimize the leakage flow.
    • 燃气轮机具有形成初级流体流过的流体通道的壳体和设置在流体通道中的转子叶片,其中转子叶片的远端与壳体之间具有间隙。 壳体具有多个间隔开的气孔,其周向延伸,用于使外部次级流体室与间隙连通,吹气孔相对于壳体的壁以倾斜角形成,从而使得从 吹气孔被赋予与从间隙泄漏的初级流体的流动相对的流动部件。 控制从吹出孔排出的次级流体的量和排出压力,以液压力学地改变次级流体对初级流体泄漏流动的阻力,从而使得可以模拟泄漏流动。