초록 ▼

A cable connection head is disclosed, in which a well logging cable is inserted through an upper head housing of a head housing consisting of a lower head housing coupled to an upper portion of a measuring instrument housing and the upper head housing coupled to an upper portion of the lower head ho

A cable connection head is disclosed, in which a well logging cable is inserted through an upper head housing of a head housing consisting of a lower head housing coupled to an upper portion of a measuring instrument housing and the upper head housing coupled to an upper portion of the lower head housing, armoring wires of the well logging cable secured to the upper head housing, and core wires of the well logging cable are connected to a connector which is fittedly secured to the lower head housing. A metal covered cable of the well logging cable is constructed by accommodating a plurality of core wires and filling with an electric insulating material in a metal tube. The lower head housing and metal covered cable are reliably sealed to each other such as to be able to withstand high temperature by inserting the metal tube of the metal covered cable through the lower head housing and securing the metal tube by means of welding around the entire outer periphery to the top of the lower head housing. An end portion of the metal tube extends into a recess of the lower head housing. The recess is filled with a ceramic material covering the accommodated end portion of the metal tube with the electric insulating material.

대표청구항 ▼

In an arrangement for a cable connection head for high temperature purposes in which a cable assembly, including outer armoring wires and inner core wires, is inserted through an upper head housing (3) of a connection head housing (4) having a lower head housing (2) including an outer periphery, cou

In an arrangement for a cable connection head for high temperature purposes in which a cable assembly, including outer armoring wires and inner core wires, is inserted through an upper head housing (3) of a connection head housing (4) having a lower head housing (2) including an outer periphery, coupled to the upper portion of a measuring instrument (1), which is to be lowered into a well, and, said upper head housing (3) is coupled to an upper portion of said lower head housing (2), also, where said armoring wires are secured to said upper head housing (3) and said core wires are connected to a connector (5) which is fitted in and secured to said lower head housing (2), the improvement therein consisting of: (a) said core wires are part of a metal covered cable (9) encased in a metal tube (6) having an outer periphery, said metal tube accommodating therein a plurality of said core wires (7), and said tube is filled with an electrical insulating material (8); (b) a plurality of said armoring wires (10) are wound around said tube outer periphery so as to form a well logging cable (11); (c) said metal tube (6) being inserted through said lower head housing (2) and said metal tube being weldedly secured around the entire periphery of the upper portion of said lower head housing (2); (d) said lower head housing (2) having a recess (12) wherein an end portion of said metal tube (6) extends into said recess (12); and, (e) said recess (12) is filled with an electrical insulating material sintered with ceramic material (13) completely covering said accommodated end portion of said metal tube (6).