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Method for automatically filling mineral insulated electric cable

A technology for mineral insulated cables and automatic filling, which is applied in the manufacture of cables/conductors, circuits, and electrical components. It can solve the problems of low qualified rate of finished products, high production costs, and high labor intensity, and achieve high labor intensity and high production efficiency. The effect of high and low labor intensity

Active Publication Date: 2007-11-21
BAOSHENG SCI & TECH INNOVATION
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

After the assembly is completed, repeated drawing and annealing processes are carried out until the finished product, but the assembly process of this process is manual, and the labor intensity is very high, and the magnesium oxide is easy to form secondary pollution before forming the cable semi-finished product, resulting in a low qualified rate of the finished product
High production cost and long production cycle

Method used

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  • Method for automatically filling mineral insulated electric cable
  • Method for automatically filling mineral insulated electric cable
  • Method for automatically filling mineral insulated electric cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] 1. Clean and decontaminate the copper pipe 3 and wire core 1, put them in the tank for cleaning, put an appropriate amount of water in the cleaning tank, add 1% industrial cleaning agent, and carefully clean the outer surface of the copper tube by hand, the copper The inner surface of the tube needs to be scrubbed with a bougie, annealed and straightened, and the rough part of the copper tube mouth is smoothed to facilitate assembly. After the water on the surface is dissipated, the wire core is inserted into the copper tube and assembled. One end of the copper tube is closed and fixed into a core copper tube with a plug and a terminal cap;

[0023] 2. Magnesium oxide powder 2 is baked at 950°C to remove carbon, magnetic substances and moisture, and is kept at 250°C to 300°C.

[0024] 3. A tamping mechanism consisting of a bracket 7, a tamping rod 5, a tamping head 4, and a weight 6 is adopted. The tamping head is installed and connected to the lower end of the tamping ...

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Abstract

A production method of insulating cable includes the following steps: 1) fabricate a cleaned and straightened copper tube with a wire core; 2)dry MgO powder and keep it under 250oC - 300oC; 3)fix the copper tube at the stand of a tamp device which is composed by stand, tamping rod, tamping head and balance weight; 4) load MgO powder by loading machine in the room between the wire core and the copper tube and tamp simultaneously; 5) stretch the filled tube and quench, then stretch and quench till the design size; extrude cover the tube with plastic.

Description

technical field [0001] The invention relates to the improvement of the production process of mineral insulated cables and belongs to the technical field of cables. Background technique [0002] The current mineral insulated cable technology is to dry the magnetically separated magnesium oxide powder and then add a special binder to make it into a paste. On the one hand, the additive should ensure the compression molding of the prefabricated magnesia porcelain column, and on the other hand, it should make the pressed magnesia porcelain column easy to demould. Cellulose, paraffin, etc. are often used as binders. The powder processed in this way is sent to a press for compression molding. The pressed magnesia porcelain column is put into the storage box or transported by the conveyor belt to the electric furnace for calcination (the calcination temperature is about 1200°C). [0003] The calcined ceramic column is sent to the assembly table. In order to avoid dirtying the cer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00
Inventor 房权生仲怀国冯志骏张华荣
Owner BAOSHENG SCI & TECH INNOVATION
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