Flexible heat shields and method

Details Flexible heat shields and method Flexible heat shields and method

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 59/02 (2006.01) B32B 5/02 (2006.01) B32B 18/00 (2006.01) B32B 33/00 (2006.01) F01D 25/14 (2006.01) F23R 3/42 (2006.01)

Patent

CA 2580128

A heat shield (30) comprises a flexible inner jacket (32) configured and disposed to be fitted around at least a portion of a component, and an outer jacket (34) configured and disposed to be fitted around the inner jacket (32). The outer jacket (34) comprises at least one layer of meshed wires (36) intersected by braze wires (38). The outer jacket (34) is designed to be substantially flexible when fitted over the component during manufacturing to follow non-linear shapes. Once the heat shield (30) is in place, it is preferably heated so as to melt the braze wires (38) to form attachment points (40); upon cooling, the attachment points (40) cause the outer jacket (34) to become somewhat rigid.

L'invention concerne un écran thermique (30) comprenant une chemise intérieure flexible (32) configurée et disposée de sorte à entourer au moins une partie d'un composant, et une chemise extérieure flexible (34) configurée et disposée de sorte à entourer la chemise intérieure (32). La chemise extérieure (34) comprend au moins une couche de fils maillés (36) recoupés par des fils de brasage (38). La chemise extérieure (34) est conçue pour être sensiblement flexible lorsqu'elle est disposée par-dessus le composant pendant la fabrication, de sorte à suivre des formes non linéaires. Une fois que l'écran thermique (30) est en place, il est de préférence chauffé pour faire fondre les fils de brasage (38) afin de former des points de fixation (40). Lors du refroidissement, les points de fixation (40) confèrent à la chemise extérieure (34) une certaine rigidité.

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