Slender hole glass-sealing multi-pin electrical connector and preparation method of slender hole glass-sealing multi-pin electrical connector

Abstract

The invention discloses a slender hole glass-sealing multi-pin electrical connector and a preparation method of the slender hole glass-sealing multi-pin electrical connector. The slender hole glass-sealing multi-pin electrical connector comprises a metal housing, wherein a plurality of sealing holes are axially formed in the metal housing; conductor pins are assembled in the sealing holes; glass insulators are clamped between the conductor pins and the sealing hole walls of the metal housing; and epoxy curing layers are sealed at two ends in each sealing hole of the metal housing. The glass insulators are fabricated by a vitreous molten high-pressure tubing technology; sintering is carried out by a mesh-belt high-temperature sintering furnace; fractional potting and curing are carried out in grooves in two ends of the sealing holes of the electrical connector by a high-temperature resistant high-insulation epoxy adhesive, so as to form a compact protection layer; and the glass insulators are prevented from being polluted by external impurities. By the slender glass insulators, glass tubes are consistent in size, smooth in surface and good in boundary dimension; the problems of shrinkage and internal bubbles after a plurality of glass beads are superposed are solved; and two ends are sealed through the epoxy curing layers, so that high air-tightness, high loading capacity and high insulating property are achieved.

Description

technical field [0001] The invention relates to a connector for a petroleum exploration well logging instrument, in particular to a glass-sealed multi-pin electrical connector with elongated holes and a preparation method thereof. Background technique [0002] In the process of oil extraction, it is necessary to detect various parameters downhole at any time, and transmit them to the uphole recorder efficiently and accurately through downhole sensors to provide data support for oil extraction. In this work, it is necessary to use a high-temperature and pressure-resistant electrical connector for connection. The electrical connector is generally used in the 3000-5000-meter depth logging tool, one end is located in the high-pressure area, and the other end is located in the low-pressure area, and the pressure in the high-pressure area is as high as 140MPa. [0003] The idea of ​​integrated design requires more wiring in a small cross-sectional area, that is to say, the electr...

AI Technical Summary

Problems solved by technology

[0008] When sealing elongated holes, under the premise of a certain sealing volume, to achieve the ideal sealing glass weight, it is necessary to use multiple glass beads superimposed. The height of the superposition is much higher than the upper end surface of the sealing hole, giving Sintering brings difficulties,

[0009] The traditional glass beads are higher than the surface of the sealing hole. After sealing, part of the glass will remain on the outer end of the shell and the glass climbing column will appear higher, which not only affects the appearance of the sealing part, but also reduces the sealing of the glass insulator in the inner hole of the sealing Density

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