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Arrangement and method for heating an electrical conductor

A technology for electrical conductors and equipment, applied in the field of equipment and methods for heating electrical conductors, can solve the problems of heavy coils, expensive, difficult to clean and maintain, and achieve the effect of easy maintenance and effective methods

Active Publication Date: 2008-02-13
梅勒菲尔股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the disadvantages associated with prior art induction heating devices is that, in case of production changes, additional devices such as X-ray measuring devices have to be removed in order to allow access to the induction heating device in connection with the induction heating device. For maintenance, dimensional change purposes or other process needs
[0006] Another disadvantage associated with the prior art is having both a coil and a protective field guiding element (typically a ferrite) in the same configuration
This makes the individual coils heavy, expensive and difficult to clean and maintain

Method used

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  • Arrangement and method for heating an electrical conductor
  • Arrangement and method for heating an electrical conductor
  • Arrangement and method for heating an electrical conductor

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Embodiment Construction

[0019] Figure 1 is a schematic view of an embodiment of the invention when the cable gland is closed during production. In FIG. 1 , an extrusion head 1 is represented for a production line of electrical cables 8 comprising electrical conductors, and one to three layers comprising insulating layers surrounding the electrical conductors. In the production of cables, the layers are extruded over the electrical conductor, which may be copper, aluminum or any other metal suitable for the purpose. After such extrusion, the layers must be crosslinked in order to provide the insulating layer with the desired properties. For the crosslinking reaction, the layers must be heated to a predetermined temperature. In the present invention, the heating of the layer is achieved at least partly by inductively heating the electrical conductor.

[0020] As shown in Figure 1, the device of the invention comprises a coil 5 as induction means for generating a magnetic field. The coil 5 is mounted...

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Abstract

The invention relates to an arrangement for inductively heating an electrical conductor after the extrusion head in a process of manufacturing electrical cables (8) having insulation layer on the electrical conductor. The arrangement comprises a first distinctive part having induction means (5), and a second distinctive part having guide means (4) and provided in a splice box (3) for directing the magnetic field created with the induction means (5) to protect external parts from heating.

Description

technical field [0001] The invention relates to an apparatus according to the preamble of claim 1, and in particular to an inductive heating of electrical conductors after an extrusion head during the manufacture of electrical cables with a cross-linkable insulating layer surrounding them device of. Furthermore, the invention relates to a method according to the preamble of claim 18 and, in particular, to a method of inductively heating an electrical conductor after an extrusion head during the manufacture of a cable with an insulating layer surrounding the electrical conductor. method. Background technique [0002] Different arrangements are known to increase the production speed of cables. Production speed depends significantly on how efficiently the insulation of the extruded cable can be heated to the temperature necessary for the crosslinking reaction. The main limiting factor for heating is the low thermal conductivity inside the insulation. Therefore different dev...

Claims

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Application Information

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IPC IPC(8): H01B13/14H05B6/10B29C35/10B29CB29C35/08
CPCH01B13/143B29C35/10B29C2035/0811H05B6/02H05B6/36
Inventor P·胡塔里
Owner 梅勒菲尔股份有限公司
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