FIELD: machine building.
SUBSTANCE: between nozzles and external coupling that connects them there are dielectric gaskets installed of hot melt polymer, having adhesion to materials of coupling and nozzles, nondetachable joint of nozzles is arranged with coupling by means of joint radial expansion of nozzles and coupling to form circular ledges on external surfaces of nozzles and coupling with height that exceeds thickness of dielectric gaskets between nozzles and coupling. Radial pressing of end sections of coupling is done to form internal ledges in nozzles, central part of coupling is heated up to temperature of hot melt polymer melting start with maintenance of temperature of end sections of coupling below temperature of polymer melt, and internal surface of nozzles is lined with polymer shell, ends of which are fixed and sealed by means of radial deformation of metal jamming tips in them.
EFFECT: increased reliability of current-isolating insert at high pressure in pipeline.
5 cl, 1 dwg
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