Containment system for containing blade burst

Details Containment system for containing blade burst Containment system for containing blade burst

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 21/04 (2006.01)

Patent

CA 2329715

The present invention is addressed to a multiple layer blade burst control system for use in turbine engines. The system utilizes a first inner containment ring (81) and a second outer containment ring (82) separated by a layer of thin ductile material (83). The inner containment ring (81) and outer containment ring (82) are each mounted to an engine housing by the use of a plurality of supporting legs (84, 85, 86). The first inner containment ring and the second outer containment ring each have complementary ribs (87) and grooves (88) on their respective inner and outer surfaces, so that when broken blades or blade fragments strike the inner surface of the inner containment ring (81), this ring (81) absorbs the transfer of energy and moves towards the second containment ring (82). The movement of the inner containment ring also deforms the thin ductile material (83) which creates an additional energy transfer. The system may also be utilized without the thin ductile layer, and a set of intermeshing protrusions and recesses. The protrusions and recesses may be either complementary or non-complementary. The system has the advantage of being light and easy to manufacture.

La présente invention se rapporte à un système à couches multiples de maîtrise de la rupture d'aubes, qui est destiné à des turbomachines. Ce système comporte un premier carter de protection interne (81) et un second carter de protection externe (82), séparés par une fine couche de matière ductile (83). Le carter de protection interne (81) et le carter de protection externe (82) sont montés chacun sur un compartiment réacteur au moyen d'une pluralité de pattes de support (84, 85, 86). Ces carters comportent chacun des nervures (87) et des rainures (88) complémentaires sur leurs surfaces interne et externe respectives, de sorte que lorsque des aubes ou des fragments d'aubes rompus frappent la surface interne du carter de protection interne (81), ce carter (81) absorbe le transfert d'énergie et se déplace en direction du second carter de protection (82). Le déplacement du carter de protection interne déforme également la fine couche de matière ductile (83) ce qui crée un transfert d'énergie supplémentaire. Le système peut également être utilisé sans la fine couche de matière ductile, mais avec un ensemble de protubérances et d'évidements engrenants. Ces protubérances et évidements peuvent être complémentaires ou non complémentaires. Ce système possède l'avantage d'être léger et facile à fabriquer.

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