FIELD: oil and gas industry.
SUBSTANCE: invention relates to the oil and gas industry, and in particular to systems for overflow and transportation of liquefied natural gas, in particular to devices for hermetic connection of pipelines. Docking coupling, consisting of a flange that is joined to the mating flange of the connected pipeline by means of a tightening mechanism and a clamping element, moreover, the actuating elements of the tightening mechanism, namely the bayonet groove and the guide groove, are located inside the body of the tightening mechanism and are thereby protected from the effects of the external environment, also the mechanism tightening contains at least one additional bayonet slot for connecting flanges of pipelines of other sizes.
EFFECT: increasing the reliability of the docking coupling, as well as increasing the number of standard sizes of pipelines for docking.
6 cl, 7 dwg
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