Flexible pipe having high resistance to axial compression and method of manufacturing such a pipe

THE INVENTION RELATES TO A FLEXIBLE PIPE AND A METHOD OF PRODUCING SUCH A PIPE. IT HAS TWO TUBULAR STRUCTURES, INTERNAL (34, 36, 38) AND EXTERNAL (46, 48, 50, 52, 54, 56), AND A TUBULAR AXIAL BLOCKING LAYER (40), SAID TUBULAR BLOCKING LAYER (40) COMPRISING TWO SECTION WIRES (42, 44) EACH HAVING A TRAPEZOIDAL CROSS SECTION, SAID TRAPEZOIDAL CROSS SECTION DEFINING A BASE (70, 74) AND TWO SLOPING LATERAL FLANKS, SAID BASE (7) OF ONE OF THE TWO SECTION WIRES BEING ORIENTED TOWARD THE INTERNAL TUBULAR STRUCTURE (38), AND SAID BASE (74) OF THE OTHER SECTION WIRE BEING ORIENTED IN THE OPPOSITE DIRECTION, SAID SECTION WIRES BEING WOUND SIDE BY SIDE FORMING CONTIGUOUS COILS; ACCORDING TO THE INVENTION, SAID INTERNAL TUBULAR STRUCTURE (38) COMPRISES A WIRE HAVING A WOUND STRUCTURE TO FORM TRANSVERSELY BLOCKED COILS; AND ONE OF SAID TWO SECTION WIRES (42) IS WOUND AGAINST SAID STRUCTURE COILS.