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Process for jointing cables, apparatus for performing such a process and thermoplastic joint so manufactured

A thermoplastic and equipment technology, applied in the direction of connecting/terminating cable equipment, cable joints, cable installation, etc., can solve problems such as reconstruction and stability of cable joint insulation system

Active Publication Date: 2019-08-02
PRYSMIAN SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the reconfiguration of the cable joint insulation system cannot be stabilized by curing

Method used

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  • Process for jointing cables, apparatus for performing such a process and thermoplastic joint so manufactured
  • Process for jointing cables, apparatus for performing such a process and thermoplastic joint so manufactured
  • Process for jointing cables, apparatus for performing such a process and thermoplastic joint so manufactured

Examples

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Embodiment Construction

[0063] exist figure 1 In , a first power cable 100 and a second power cable 200 are schematically shown. The first power cable 100 and the second power cable 200 are arranged axially adjacent to each other and are exposed by removing parts of the upper layers (listed below) for subsequent joining together.

[0064] Each cable 100 , 200 comprises an electrical conductor 10 , 20 and an insulation system surrounding the respective electrical conductor 10 , 20 . The insulation system includes an inner thermoplastic semiconducting layer 14 , 24 , a thermoplastic insulating layer 16 , 26 and an outer thermoplastic semiconducting layer 18 , 28 . The inner thermoplastic semiconducting layer 14, 24 surrounds the respective electrical conductor 10, 20 of the power cable 100, 200 and is in direct contact with the electrical conductor. Each thermoplastic insulating layer 16, 26 surrounds and is in direct contact with a respective inner thermoplastic semiconducting layer 14, 24, and an o...

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Abstract

A process for jointing power cables (100, 200) comprises the steps of: providing a first power cable (100) and a second power cable (200), each cable (100; 200) comprising an electric conductor (10; 20) and a thermoplastic insulation system surrounding the electric conductor (10; 20); removing a length of the insulation system from each extremity of the first and second power cables (100, 200), thereby exposing a corresponding length of the relevant electric conductors (10; 20); electrically jointing the electric conductors (10; 20) of the first power cable (100) and of the second power cable(200); arranging the exposed length of the electric conductors (10; 20) of the first and second power in a mould (410) having a volume; heating the mould (410) to a first temperature; extruding a quantity of thermoplastic insulating material into the mould (410) at a first pressure until it fills the volume of the mould (410); cooling the mould (410) from the first temperature to a second temperature; while the mould (410) is cooling from the first temperature to a second temperature, extruding additional thermoplastic insulating material into the mould (410) at a second pressure.

Description

technical field [0001] The invention relates to a method for joining electrical cables, a device for carrying out this method and a thermoplastic joint thus produced. Background technique [0002] In this specification, "high voltage (HV)" means a voltage equal to or greater than 30 KV. [0003] The HV cable includes at least one cable core. The cable core is usually formed from a conductive metal conductor covered by an insulation system. Typically, the insulation system is formed successively from an inner polymer layer having semiconducting properties (inner semiconducting layer), an intermediate polymer layer having electrically insulating properties (insulating layer) and an outer polymer layer having semiconducting properties (outer semiconducting layer). [0004] Cables used to transmit electrical power at high voltages generally include a shield surrounding the cable core, usually made of metal or metal and polymer semiconducting materials. The shielding layer can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/14B29C45/73
CPCB29C45/73B29C45/77B29C45/78H02G1/145H02G15/08B29C45/14426B29C45/14467B29C45/14639B29C39/10B29C39/24B29C39/38B29C39/44B29K2101/12B29K2995/0005B29K2995/0007B29L2031/3462H01B13/14H02G1/14B29C2045/14868B29C45/0046B29C45/34B29C45/464B29C45/47
Inventor G·波扎蒂F·E·P·佩勒F·洛罗L·德马提诺E·M·康桑尼L·G·M·德莱
Owner PRYSMIAN SPA
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