SEALED CABLE GLAND THROUGH OUTER AND INNER WALLS OF PROTECTIVE COVER FOR NUCLEAR POWER PLANT Russian patent published in 2015 - IPC G21C13/04 H02G3/22 

FIELD: electricity.

SUBSTANCE: sealed cable gland through outer and inner walls of a protective cover for a nuclear power plant comprises an embedded tube 3 in an inner wall 1 with a rigidly fixed input section 44 of the cable 2. In axial alignment with the tube 3 in the outer wall 11 there is a device compensating relative motion between the cable 2 and the outer wall 11. The device compensating relative motion has a pipe 19 with bellows 24 at the outer end 20 and the second identical bellows 25 mounted symmetrically at the opposite end 21 of the pipe 19 near the inner surface 18 of the outer wall 11. Free ends 30 and 31 of both bellows 24 and 25 are made conical, which inner surfaces 28 and 29 are supporting elements for an output section 46 of the cable 2, which is located freely in the pipe 19 with a gap 47 in regard to the inner surface 49 of the pipe 19.

EFFECT: improving the operational reliability of the sealed cable input at the usage of hard-bending high-voltage conductors.

6 cl, 3 dwg