Pressurized gas insulated high voltage lines with adhesively connected outer pipe

Claim 2

In a pressurized gas insulated high voltage line formed from a plurality of metal pipes each having a tubular inner conductor axially mounted therein by means of insulative supports, with the ends of each of said pipes and its associated inner conductor being conductively connected with the ends of the adjacent pipes and conductors respectively and a pressurized gas within said connected pipes and surrounding said connected conductors, the improvement wherein: said pipes have the same outer diameter with said ends of each of said pipes being provided with portions which mate with the end portions of the adjacent pipes in an overlapping relationship; each said pipe is gas tightly and mechanically firmly connected at its ends to the adjacent pipes by an adhesive; at least a part of said overlapping end portions is free of said adhesive and provides an electrically conductive connection between adjacent said pipes; each said inner tubular conductor is provided at its ends with a plurality of successive conical sections, said conical sections having an angle of inclination of less than fifteen degrees; each of the ends of each said inner tubular conductor engages and forms a bayonet catch with a respective end of the adjacent inner tubular conductor; and spring means which engage the associated ends of adjacent inner conductors are provided for maintaining the bayonet catch under spring pressure.

Claim 3

A high voltage line as defined in claim 1 wherein the one of said end portions which overlaps the adjacent end portion is provided with a fill opening and a plurality of exit openings for the adhesive, which is to be filled in under pressure, which openings are provided in a diametrally opposite arrangement.

Claim 4

A high voltage line as defined in claim 1 wherein said overlapping end portions of adjacent pipes are of equal length whereby the end surface of each of said pipes abuts a portion of the other said adjacent pipes; and further comprising a sealing ring disposed at each of the points of abutment of the end surfaces of adjacent said pipes.

Claim 5

A high voltage line as defined in claim 3 wherein said overlapping end portion of each of said pipes is divided into a conical portion and a cylindrical portion, and only said cylindrical portions of the overlapping said end portions are connected by said adhesive.

Claim 6

A high voltage line as defined in claim 1 wherein the associated ends of said pipes are correspondingly tapered so as to form an overlapping joint; a metal ring is provided surrounding said overlapping joint and forming a slit-type opening between its inner surface and the outer surface of said pipes; and said adhesive is provided only in said slit, while the two overlapping tapered surfaces are kept free of said adhesive and serve to conduct current.

Claim 7

A high voltage line as defined in claim 1 wherein the wall thickness of the end of said conductors which overlaps the end of the other conductor to form said bayonet catch is sufficiently thin so that when said conductors are connected, a deformation occurs in the area of said conical sections.

Claim 8

A high voltage line as defined in claim 6 wherein said spring means is a plate spring.

Claim 9

In a pressurized gas insulated high voltage line formed from a plurality of metal pipes each having a hollow inner conductor axially mounted therein by means of insulative supports, with the ends of each of said pipes and its associated inner conductor being conductively connected with the ends of the adjacent pipes and conductors respectively and a pressurized gas within said connected pipes and surrounding said connected conductors, the improvement wherein: said pipes have the same outer diameter with said ends of each of said pipes being provided with portions which mate with the end portions of the adjacent pipes in an overlapping relationship; said overlapping end portions of adjacent pipes are of equal length whereby the end surface of each of said pipes abuts a portion of the other said adjacent pipes; a sealing ring is disposed at each of the points of abutment of the end surfaces of adjacent said pipes; said overlapping end portion of each of said pipes is divided into a conical portion and a cylindrical portion; each said pipe is gas tightly and mechanically firmly connected at its ends to the adjacent pipes by an adhesive provided only between the cylindrical portions of the overlapping said end portions; the remainder of said overlapping end portions is free of said adhesive and provides an electrically conductive connection between adjacent said pipes; and the surface of each said cylindrical portion of at least the one of said end portions which is overlapped by the end portion of the adjacent pipe is provided with an annular groove, and the cylindrical portion of each of the overlapping end portions is provided with an outwardly directed bore which is in communication with said groove.

Claim 10

In a pressurized gas insulated high voltage line formed from a plurality of metal pipes each having a hollow inner conductor axially mounted therein by means of insulative supports, with the ends of each of said pipes and its associated inner conductor being conductively connected with the ends of the adjacent pipes and conductors respectively and a pressurized gas within said connected pipes and surrounding said connected conductors, the improvement wherein: said pipes have the same outer diameter with said ends of each of said pipes being provided with portions which mate with the end portions of the adjacent pipes in an overlapping relationship; said overlapping end portions of adjacent pipes are of equal length whereby the end surface of each of said pipes abuts a portion of the other said adjacent pipes; a sealing ring is disposed at each of the points of abutment of the end surfaces of adjacent said pipes; said overlapping end portion of each of said pipes is divided into a conical portion and a cylindrical portion; each said pipe is gas tightly and mechanically firmly connected at its ends to the adjacent pipes by an adhesive provided only between the cylindrical portions of the overlapping said end portions; the remainder of said overlapping end portions is free of said adhesive and provides an electrically conductive connection between adjacent said pipes; and the surface of each said cylindrical portion of at least the one of said end portions which is overlapped by the end portion of the adjacent pipe is provided with an annular groove, and the cylindrical portion of each of the overlapping end portions is provided with an outwardly directed bore which is in communication with said groove.