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Manufacturing technology of long-length jointless mineral insulation cable

A technology of mineral insulated cable and manufacturing process, which is applied in the direction of cable/conductor manufacturing, conductor/cable insulation, circuit, etc., which can solve the problems of cable production length restriction, long cable production cycle, and increased electrical hidden dangers, etc., and achieves one-time inspection High qualification rate, easy guarantee of structure, size and concentricity, and reduced manpower and material resources

Inactive Publication Date: 2012-06-13
BAOSHENG SCI & TECH INNOVATION
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its production process and equipment, the cable production cycle is long; and because the length of copper tubes and copper rods is limited by transportation, the production length of cables is restricted
As a result, the user needs to increase the intermediate connector to complete the length of the electrical line cable during installation, which not only increases electrical hidden dangers, but also increases the cost

Method used

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  • Manufacturing technology of long-length jointless mineral insulation cable
  • Manufacturing technology of long-length jointless mineral insulation cable
  • Manufacturing technology of long-length jointless mineral insulation cable

Examples

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Embodiment Construction

[0027] A manufacturing process of a large-length non-joint mineral insulated cable, comprising the following steps:

[0028] (1) Use 12-16% H successively through the washing machine 2 SO 4 1. Clean the copper strip with tap water, dry the cleaned copper strip at 35-45°C, and the dried copper strip enters the forming roll for tube forming; the tension-aligned copper rod (conductor) flows into the fixed core tube, and the copper The rod enters the stainless steel fixed core tube and is filled with special magnesium oxide powder at the same time. Silicone oil is injected into the special magnesium oxide powder in the fixed core tube. There is no need for any moisture removal treatment before silicone oil injection. The special magnesium oxide powder contains more than 94% of MgO. The rest is SiO 2 , CaO, Fe 2 o 3 The magnesia powder that can be added with silicon oil flows into the copper sheath through the fixed core tube. The length of the stainless steel fixed core tube i...

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Abstract

The invention, which belongs to a cable manufacturing technology field, relates to a manufacturing technology of a long-length jointless mineral insulation cable. The above technology comprises the following steps that: (1) 12-16% H2SO4 and tap water are successively used to clean a copper strip through a cleaning machine, the cleaned copper strip is dried at a temperature of 35-45 DEG C, and then the dried copper strip enters into a moulding roller so as to perform pipe forming; a tension force alignment copper rod flows into a stainless steel set core pipe and a special magnesium oxide powder is filled while the copper rod is entering into the stainless steel set core pipe, and silicone oil is injected into the special magnesium oxide powder in the set core pipe; (2) argon arc welding continuous welding is performed to the pipe moulding copper strip, and then continuous cycle rolling and annealing are performed. A production period is short. Product manufacturing cost is low. High-pressure resistant and insulation properties are good. A cable production length is long.

Description

technical field [0001] The invention relates to a manufacturing process of a large-length non-joint mineral insulated cable, which belongs to the technical field of cable manufacturing. Background technique [0002] Mineral insulated cables are basically composed of high-conductivity copper conductors, inorganic magnesium oxide insulation, and copper tube sheaths. It can work continuously at 250°C for a long time, and can work close to the melting point of copper at 1083°C for a short or extraordinary period (the melting point of magnesium oxide insulation is 2800°C). Its fire resistance, durability, safety, reliability and economy cannot be replaced by traditional power cables. However, the length of mineral insulated cables produced by traditional production processes is limited by their copper tubes and copper rods, which greatly restricts the use of mineral insulated cables. [0003] The traditional mineral insulated cable production process is to assemble magnesium ox...

Claims

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Application Information

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IPC IPC(8): H01B13/00H01B13/06
Inventor 仇家斌蔡如明李士成宋敬涛祝仲伟
Owner BAOSHENG SCI & TECH INNOVATION
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