Patent ID: 6155611
Filing Date: 2000-12-05
Classification: F16L

Abstract:
Connector (1) for two tubes (5a, 5b, 6) gas tight at temperatures between ambient temperature and a usage temperature of at least 600.degree. C., by a cooperation of a first element (3) fixed to a first tube (6) and a second element (2) forming a sleeve for a second tube (5a, 5b) fitted with a flared part (50, 51, 52, 53) comprising a contact surface at its end, using a system (4) for locking/unlocking the first (3) and second (2) elements, comprising a spring (44) compressing the flared part (50, 51, 52, 53) into contact with a sealing surface (31, 310, 311, 312) of the first element (3), to form a seal using a sealing element (20, 200, 201, 202, 203) on the second element (2), characterized in that:a) the diameter of the sealing element of the second element varies with the diameter of the second tube (5a, 5b), while the sealing surface of the first element remains constant regardless of the diameter of the second tube,b) the contact surface forming the seal by compression of the flared part (50, 51, 52, 53) comprises at least a sealing circle (11) formed by a tangential contact with variable diameter depending on the diameter of the second tube, between the flared part and the sealing surface, in order to seal the connector regardless of the temperature and corresponding expansion of the connector,c) the materials forming the connector (1) are chosen from materials which have mechanical characteristics at least equivalent to the characteristics of the second tube at the same usage temperature.