Device for passing electrical and power installation conductors through protective shell separating clean zone from contaminated one and method of assembling same

Claim 1

A device for passing electrical and power installation conductors through a protective shell separating a clean zone from a contaminated one, comprising: a metal shield attached to said protective shell on the contaminated zone side; a hollow metal casing made in the form of a tube embedded in the body of said protective shell; end flanges of said hollow metal casing; a first insulating through element arranged within said hollow metal casing made of inorganic material having a high absorption capacity to induced radiation and having at least one through hole; a conductor passed through said hole and having one end in said clean zone and one end in said contaminated zone; at least one section of said conductor in the form of a rod on the contaminated zone side; a thermocompensating multi-strand section of said conductor coupled electrically to said section of the conductor made of a rod; a second insulating through element formed of inorganic insulating material fitted on each said conductor end; seal fittings fixed to the second insulating through elements and rigidly linking the second insulating through elements with said end flanges and said conductor ends.

Claim 2

A device for passing electrical and power installation conductors through a protective shell separating a clean zone from a contaminated one, comprising: a metal shield attached to said protective shell on the contaminated zone side; a hollow metal casing made in the form of a tube embedded in the body of said protective shell; end flanges of said hollow metal casing; a first insulating through element arranged within said hollow metal casing made of inorganic material having a high absorption capacity to induced radiation and having at least one through hole; a conductor passed through said hole and having one end in said clean zone and one end in said contaminated zone; at least one section of said conductor in the form of a rod on the contaminated zone side; a thermocompensating multi-strand section of said conductor coupled electrically to said section of the conductor made of a rod; a second insulating through element formed of inorganic insulating material fitted on each said conductor end; seal fittings fixed to the second insulating through elements and rigidly linking the second insulating through elements with said end flanges and said conductor ends.

Claim 7

A method for passing electrical and power installation conductors through a protective shell separating a clean zone from a contaminated zone, comprising the steps of: forming a through passage in the protective shell; installing a metal shield surrounding the through passage on the contaminated side of the shell; placing a hollow metal casing in the through passage and welding the casing to the shell; inserting an inorganic material insulating element having at least one through hole into said casing; brazing at least one metal bushing to an end flange on the clean side and on the contaminated side to locate at least one additional insulating element on each end flange; brazing an end cap onto a conductor to locate at least one conductor relative to said at least one additional insulating element; installing the end flange over the end of the casing on the contaminated side; placing said at least one additional insulating element in said bushing on said contaminated side; inserting said conductor and cap into said at least one additional insulating element on said contaminated side and into said insulating element; installing the end flange over the end of the casing on the clean side; inserting the conductor and cap into the additional insulating element on the clean side and into the insulating element; and electrically connecting the conductor inserted from the contaminated side to the conductor inserted from the clean side.

Claim 8

A method for passing electrical and power installation conductors through a protective shell separating a clean zone from a contaminated zone, comprising the steps of: forming a through passage in the protective shell; installing a metal shield surrounding the through passage on the contaminated side of the shell; placing a hollow metal casing in the through passage and welding the casing to the shell; inserting an inorganic material insulating element having at least one through hole into said casing; brazing at least one metal bushing to an end flange on the clean side and on the contaminated side to locate at least one additional insulating element on each end flange; brazing an end cap onto a conductor to locate at least one conductor relative to said at least one additional insulating element; installing the end flange over the end of the casing on the contaminated side; placing said at least one additional insulating element in said bushing on said contaminated side; inserting said conductor and cap into said at least one additional insulating element on said contaminated side and into said insulating element; installing the end flange over the end of the casing on the clean side; inserting the conductor and cap into the additional insulating element on the clean side and into the insulating element; and electrically connecting the conductor inserted from the contaminated side to the conductor inserted from the clean side.