Alstom Technology Limited

Matthias Rothbrust

Armin Busekros

Ivan Rozman

Mirjana Mihelic

Christian Mueller

Darran Norman

Andrew Baxter

Vladimir Navrotsky

A device () for the feed of air to a compressor () of a gas turbine plant has an air inlet duct () and an air inlet chamber () which adjoins the air inlet duct. For the purpose of damping sound emissions of the compressor (), a first and second inner wall () of the inlet chamber () is at least partially lined by means of melamine foam. The invention is characterized by the advantages in that silencing is ensured both with wetness and with chemically aggressive conditions. The silencing device is consequently functionally reliable over an extended operating period.

Sound absorber for gas turbine installations

Annular or ring-segment-shaped cavities () which are formed in particular in multi-shell () casings of turbomachines are preferably provided with suitable means for compensating for forming temperature stratifications. According to the invention, an overflow passage () connects two points of the cavity to one another which are situated in different circumferential positions. Arranged in the overflow passage () is an ejector () which can be operated with a motive fluid and which serves to drive a flow through the overflow passage from an upstream end () to a downstream end ().

Turbomachine

In an exhaust gas housing () of a thermal engine, a radially outer housing casing () and a radially inner housing casing () arranged on the hub side are connected to one another via at least one thermally insulated carrying rib () acted upon by a cooling medium. A carrying rib () has at least two passage ducts () and () for the cooling medium, at least one passage duct () possessing a cooling medium supply () and at least one passage duct () possessing a cooling medium outlet (), and these passage ducts () and () being in communicating connection in the radially inner hub-side end region via a deflection duct (). The cooling medium is led from an external pressure source () through the carrying rib () to the region of the deflecting duct () arranged on the hub-side casing () and from there through the carrying rib () back again into a collecting duct () which issues preferably into an annular duct () for cooling the exhaust gas housing flange ().

Exhaust gas housing of a thermal engine

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Dietikon, Switzerland

Matthias Rothbrust