A kind of sealing device and method for lead wire of airtight metal case
A lead sealing, metal shell technology, applied in the direction of measuring device, measuring device casing, thermometer parts, etc., can solve the problems of high temperature requirements and difficult to achieve, and achieve the effect of ensuring the strength of the outer surface
Inactive Publication Date: 2016-06-01
GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology
However, the manufacturing process of the low-temperature superconducting current lead sealing device requires high temperature, which is not easy to realize at room temperature, and because of the low melting point of indium (156.61°C), the device cannot be used for the lead sealing of medium and high temperature containers
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[0028] In order to better illustrate the present invention, further description will be made below in conjunction with the accompanying drawings.
[0029] Such as figure 1 As shown, a lead wire sealing device of a closed metal shell, the shell 9 is provided with a first lead wire through hole, the lead wire 5 passes through the first lead wire through hole, and the lead wire sealing device includes a shell 9 Outer closed enclosure plate 3, welding stud 8, cover plate 7, epoxy resin 4, first sealing ring 11 and second sealing ring 12; the first lead through hole is located in the closed enclosure plate 3 In the enclosed space; the enclosed space is filled with epoxy resin 4; the welding stud 8 is located outside the closed enclosure 3, and the cover 7 is fixed above the closed enclosure 3 by nuts 6, so The cover plate 7 is provided with a screw hole matched with the welding stud 8 and a second lead through hole matched with the first lead through hole; the lead 5 is provided w...
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Abstract
The invention discloses a sealing device and method of a lead of a sealing metal case. The sealing device of the lead of the sealing metal case comprises a closed enclosure plate, welding studs, a cover plate and epoxy resin; a first lead through hole is arranged in the enclosure space of the closed enclosure plate; the enclosure space is filled with the epoxy resin; the welding studs are arranged outside the closed enclosure plate, and the cover plate is fixed above the closed enclosure plate through a nut. The sealing method of the lead of the sealing metal case includes the steps of welding the closed enclosure plate outside the case, and arranging the first lead through hole in the enclosure space of the closed enclosure plate; symmetrically mounting the welding studs outside the closed enclosure plate; enabling the lead to penetrate a first sealing ring, a second lead through hole and a second sealing ring; filling the enclosure space with the epoxy resin and curing agent of the epoxy resin, and covering the cover plate and tightening the nut after curing. The sealing device of the lead of the sealing metal case is simple in structure, the sealing method of the lead of the sealing metal case is simple in process, and the sealing device and method of the lead of the sealing metal case are good in sealing effects.
Description
technical field [0001] The invention relates to a lead wire sealing method, in particular to a lead wire sealing device and method for a sealed metal casing. Background technique [0002] When studying heat exchangers with complex multi-flow channels such as shell-and-tube heat exchangers and tube-bundle falling film evaporators, it is necessary to measure the flow field temperature of the heat exchange tubes inside the heat exchanger. Most of the temperature sensors used are flexible lead wires. Through the through hole to the outside of the heat exchanger shell. Usually, the material of the lead wire is different from that of the heat exchanger shell, and when it is sealed with the heat exchanger shell, it cannot be directly welded, causing a sealing problem. [0003] The publication number is CN202676193U, and the Chinese utility model patent titled a lead wire sealing device discloses a lead wire sealing device. A stepped hole with a large upper part and a smaller lower...
Claims
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IPC IPC(8): G01D11/26G01K1/00
Inventor 冯东东徐士鸣张凤鸣陈顺权杜如虚
Owner GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI