Connection device of two pipes, comprising a seal which is configured to limit the risks of damaging the seal

A connection device comprising:

• a female pipe comprising at one of its ends an upstream portion and a widened portion which forms a receptacle, the receptacle having a first length and a first diameter which is larger than an inner diameter of the upstream portion of the female pipe,
• a male pipe comprising at one of its ends an upstream portion and a head which is configured to be accommodated in the receptacle of the female pipe,
• the head having a second diameter which is larger than an outer diameter of the upstream portion of the male pipe and very slightly smaller than the first diameter of the receptacle,
• the head having a form permitting slight pivoting of the head relative to the receptacle,
• said head comprising a peripheral groove,
• a seal being positioned in the peripheral groove in the male pipe,
• said male pipe comprising at least one extension configured to limit a pivoting movement of the male pipe relative to the female pipe around an axis of rotation which is perpendicular to a longitudinal axis of the female pipe, and
• in operation, when a longitudinal axis of the male pipe is aligned with the longitudinal axis of the female pipe and the second diameter of the head is positioned within the receptacle, at least part of the at least one extension is introduced into the upstream portion of the female pipe, the at least one extension having an outer diameter less than the second diameter of the head in order to be introduced into the upstream portion of the female pipe, and
• the connection device comprising play between the at least one extension and the upstream portion of the female pipe such that the pivoting movement of the male pipe relative to the female pipe does not exceed an angle α, the angle α being the maximum angle of the pivoting movement before contact between the male and female pipes,
• the at least one extension having a length which is at least as long as the first length of the receptacle.