FIELD: oil-and-gas industry.
SUBSTANCE: invention relates to pipeline transportation and can be used in couplings of pipelines laid in protective jacket. Proposed coupling comprises protective jacket, stalk, vent system and diagnostics system. Pipeline is laid in said jacket at bearing guide rings. Said rings are made of glass-fibre interchangeable segments connected to semi-ring and to ring on pipeline and secured thereat by rubber gaskets and wedge-like retainers with opposite herring-bone teeth made at their side surfaces. Vent system consists of two vertical and one horizontal air ducts communicated via tube space to be sealed on both sides by unmoulded rubber collars secured by straps. Collars have crimp with inlet and outlet for FP protective jacket. Strap consists of squeezing element made of round metal rolled stock, thrusts with holes and metal strip welded in place from thrust to thrust. Diagnostics system consists of fibre-optics transducers, control FO and all-weather cabin arranged at ground surface.
EFFECT: higher reliability.
6 cl, 24 dwg
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