Method and means of repairing a pipe

F - Mech Eng,Light,Heat,Weapons – 16 – L

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F16L 55/168 (2006.01)

Patent

CA 2473867

The invention relates to a permanent method of repairing leaking, damaged or weakened pipe by grit blasting the pipe (10), followed by wrapping it with a fibre reinforced composite material (12), then installing two half oversized steel sleeves (14). After that the non-gaseous matter is removed by fresh water and compressed air or inert gas. An epoxy or cementitious grout or a combination of both is finally injected into annular chamber (20) of the sleeves through pre-installed inlet port (16) and outlet port (18). The epoxy or cementitious is then allowed to cure. The means to seal the terminal end of steel sleeves includes a pair end flanges (32) matingly securable to a pair of terminator bodies (45).

Cette invention se rapporte à une méthode permanente de réparation des tuyaux qui fuient, qui sont endommagés ou affaiblis, par soufflage au sable (10), suivi de leur enveloppement par un matériau composite renforcé de fibres (120) puis de la pose de deux manchons d'acier surdimensionnés (14). Ensuite, la matière non gazeuse est enlevée à l'eau fraîche et au moyen d'air comprimé ou de gaz inerte. Un coulis époxyde ou cimentaire ou une combinaison des deux produits est finalement injecté dans la chambre annulaire (20) des manchons, à travers un orifice d'entrée (16) et un orifice de sortie (18) pré-aménagé. Le coulis époxyde ou cimentaire peut alors permettre d'effectuer le traitement. Le dispositif d'obturation de l'extrémité terminale des manchons d'acier comprend une paire de collerettes d'extrémité (32) à fixation homologue à une paire de corps de terminaison (45).

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