초록 ▼

A hot gas overheat protection device is provided for gas turbine engines and the like. An outer metal wall having cooling air supplied through cooling holes therethrough from the outside is shielded from hot gas flow by the provision of highly temperature resistant lining wall elements spaced from t

A hot gas overheat protection device is provided for gas turbine engines and the like. An outer metal wall having cooling air supplied through cooling holes therethrough from the outside is shielded from hot gas flow by the provision of highly temperature resistant lining wall elements spaced from the metal wall. A thin metal skin is provided between the metal wall and the wall elements defining intermediate spaces communicating with cooling air ports in the metal wall. The thin metal skin has a melting point equal to or lower than that of the metal wall so as to provide for fusion or rupture of the thin metal skin in the event the insulating wall elements are locally ruptured, whereby the cooling air is provided through the cooling air ports in a direction against the flow of hot gases to thereby mitigate the effects of the rupture and protect the metal wall.

대표청구항 ▼

Device for preventing the scorching of a hot-gas-wetted metal wall of a gas turbine engine or the like, comprising: highly temperature resistant wall element means disposed between a metal wall and a space subjected to hot gas flow, thin metal skin means disposed between the temperature resistant wa

Device for preventing the scorching of a hot-gas-wetted metal wall of a gas turbine engine or the like, comprising: highly temperature resistant wall element means disposed between a metal wall and a space subjected to hot gas flow, thin metal skin means disposed between the temperature resistant wall element means and the metal wall, said thin metal skin means lining the metal wall and forming intermediate cooling air space means bounded by the metal wall and the thin metal skin means, and cooling air hole means extending through the metal wall and opening into the intermediate cooling air space means, wherein said thin metal skin means is formed of material having a relatively low melting point such that, upon rupture of said temperature resistant wall element means and consequent communication of hot gas flow to the thin metal skin means, said thin metal skin means is melted to open said cooling air intermediate space means and permit cooling air from said cooling air holes to flow against the flow of hot gases resulting from said rupture and thereby protect the metal wall from scorching.