High voltage connector for a neutron generator comprising a plastic insulator

Claim 2

A high voltage connector for a radioactivity type borehole logging tool neutron generator, said tool having a cylindrical case for enclosing a high voltage generating section, a neutron generator section and a section for said connector, comprising in combination an axially located conductor having a smooth surface and connecting said high voltage generating section with said neutron generator section a body of polytetrafluoroethylene insulating material surrounding said conductor in intimate contact therewith over most of the length thereof said insulating material extending from said high voltage generating section to said neutron generating section and forming a pressure seal for said high voltage generating section an annular chamber formed in said body of insulating material for containing circuit elementS to control the replenisher of said neutron generator.

Claim 3

A high voltage connector according to claim 1, wherein said annular chamber is lined with a metallic frame.

Claim 4

A high voltage connector according to claim 2, further including electrically insulating grease between said axial conductor and said body of insulating material for excluding any air pockets.

Claim 5

A high voltage connector according to claim 3, further including a smooth surface on said body of insulating material forming an end wall for said high voltage generating section.

Claim 6

A high voltage connector according to claim 4, wherein said smooth surface end wall is substantially perpendicular to the axis of said tool.

Claim 7

A high voltage connector according to claim 5, wherein said axial conductor has a highly polished surface, and said body of insulating material is stress relieved during its manufacture.

Claim 8

A high voltage connector for a radioactivity type borehole logging tool neutron generator, said tool having a cylindrical case for enclosing a high voltage generating section, a neutron generator section and a section for said connector, comprising in combination an axially located solid stainless steel conductor having a polished surface and connecting said high voltage generating section with said neutron generator section, a body of insulating material constructed of moulded polytetrafluoroethylene surrounding said conductor in close fitting relation thereto over the entire length thereof in said connector section, a smooth surface on said body of insulating material being substantially perpendicular to the axis of said tool, said smooth surface forming an end wall for said high voltage generating section, an annular chamber formed in said body of insulating material near the middle of said connector section for containing circuit elements to control the replenisher of said neutron generator, an aluminum frame lining said annular chamber and having means for mounting said circuit elements thereon, an electrically insulating grease located between said axial conductor and said body of insulating material for excluding air pockets, and an electrically conductive coating on the outer surfaces of said body of insulating material for preventing build-up of excessive electric fields across air gaps adjacent to said outer surfaces.

Claim 9

A high voltage connector for a radioactivity type borehole logging tool neutron generator, said tool having a cylindrical case for enclosing a high voltage generating section, a neutron generator section and a section for said connector, comprising in combination an axially located solid stainless steel conductor having a polished surface and connecting said high voltage generating section with said neutron generator section, a body of insulating material constructed of moulded polytetrafluoroethylene surrounding said conductor in close fitting relation thereto over the entire length thereof in said connector section, a smooth surface on said body of insulating material being substantially perpendicular to the axis of said tool, said smooth surface forming an end wall for said high voltage generating section, an annular chamber formed in said body of insulating material near the middle of said connector section for containing circuit elements to control the replenisher of said neutron generator, an aluminum frame lining said annular chamber and having means for mounting said circuit elements thereon, an electrically insulating grease located between said axial conductor and said body of insulating material for excluding air pockets, and an electrically conductive coating on the outer surfaces of said body of insulating material for preventing build-up of excessive electric fields across air gaps adjacent to said outer surfaces.

Claim 10

A high voltage connector according to claim 7 wherein said body of insulating material is stress relieved during the manufacture thereof, and said axial conductor surface is highly positioned.