SEALED CABLE LEAD-IN Russian patent published in 2004 - IPC

FIELD: electrical engineering. SUBSTANCE: invention is meant to lead cables in hull structures and fire hazardous spaces of ship. Sealed cable lead-in has body with ring protrusion in hole for cable passage, sealing member, washer an pressure element. Novelty of approach consists in that cable lead- in contains fire-resistant material capable of altering its form under action of pressure, positioned in hole around cable and confined between internal and external conical washers. Fire-resistant material is placed under pressure of spring located between ring protrusion of body and internal conical washer which is pressed by pressure nut. Spherical quartz granules with smooth surface can be utilized in cable lead-in in the capacity of fire-resistant material capable of changing its form when exposed to pressure. Taper angle of internal and external washer amounts to 90 degrees or less. EFFECT: ensured tightness of cable lead-in if fire takes place in spaces and compartments. 1 dwg