SEALED CABLE ENTRY THROUGH THE CONTAINMENT OF A NUCLEAR POWER PLANT Russian patent published in 2023 - IPC H02G3/22 

FIELD: nuclear power plant.

SUBSTANCE: cable gland consists of a cylindrical metal case, with flanges installed on its ends, hermetically welded to the metal lining of the nuclear reactor shell. The flanges contain openings for inserting at least one module for sealed cable entry, containing a hollow cylindrical body with at least one current-carrying cable. External and internal bushings in the current-carrying module are additionally made of polymer glass, ceramics or fiberglass, and at least one current-carrying cable is passed through the holes in the said outer and inner bushings. In at least one outer and inner bushing insulators, grooves are made coaxially with the holes, where elastic sealing elements are installed to seal the insulators and at least one current-carrying cable located inside it. The gaps between at least one current-carrying cable and at least one insulator, as well as between at least one insulator and the walls of the current-carrying module housing, are sealed by simultaneous axial compression of the elastic sealing elements.

EFFECT: simultaneous increase in fire resistance, seismic resistance, radiation resistance and durability of a sealed cable gland.

10 cl, 2 dwg