Rotary heat exchanger for gas turbine

Details Rotary heat exchanger for gas turbine Rotary heat exchanger for gas turbine

F - Mech Eng,Light,Heat,Weapons

28

D

F28D 19/04 (2006.01) F02C 7/105 (2006.01)

Patent

CA 2190479

Rotary heat exchanger for effecting a thermal exchange between the inlet and outlet gases of a gas turbine, comprising a cellular ceramic disk (1), an upstream air inlet tube (6) and a downstream inlet tube (7) on either side of the disk (1) and including friction rings (13, 14) at their ends in contact with the side surfaces of the disk. Springs inserted between the disk (1) and a rim (2) for rotating the disk radially precompress the ceramic material and frictionally lock the rim (2) to the disk (1). Channels (32, 23, 41) connect the inlet path (A) with a sealed peripheral chamber (64) located between said rim (2) and said disk (1) to add to the compression exerted by the disk (1) a component corresponding to the inlet pressure. The heat exchanger of the invention is useful for the motorization of trucks or vehicles and for optimizing the prestressing of the disk.

Echangeur thermique rotatif entre les gaz d'admission a les gaz d'échappement dans une turbine à gaz, comprenant un disque (1) on matière céramique alvéolaire, un conduit d'admission d'air amont (6) et un conduit d'admission aval (7) situés respectivement de part et d'autre du disque (1) et comportent à leurs extrémités en contact avec les faces latérales du disque (1) des anneaux de friction (13, 14). Des ressorts logés entre le disque (1) et une jante (2) d'entraînement en rotation du disque précompriment radialement la céramique et solidarisent par friction la jante (2) avec le disque (1). Des passages (32, 23, 41) font communiquer le trajet d'admission (A) avec une chambre périphérique étanche (64) ménagée entre la jante (2) et le disque (1) pour ajouter à la compression du disque (1) une composante proportionnelle à la pression d'admission. Utilisation notamment pour la motorisation de camions ou de véhicules, pour optimiser la précontrainte appliquée au disque.

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