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Prefabricated high-voltage cable terminal

A high-voltage cable, prefabricated technology, applied in the direction of cable terminals, can solve the problems of low mechanical strength, not in line with the development trend of cable terminal prefabrication, heavy workload, etc., to reduce the difficulty of the process, simple and convenient on-site assembly, mechanical high intensity effect

Inactive Publication Date: 2008-12-31
BEIJING NOBBEL ELECTRIC TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, similar to the aforementioned dry-type silicone rubber cable terminal, it has the disadvantage of low mechanical strength, and the workload on site is relatively large, which does not conform to the development trend of prefabricated cable terminals.

Method used

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  • Prefabricated high-voltage cable terminal
  • Prefabricated high-voltage cable terminal
  • Prefabricated high-voltage cable terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] see figure 1 , figure 2 , Figure 3 and Image 6 , according to a preferred embodiment provided by the present invention, comprising a shell 1, an insulator 2 whose root is sleeved in the shell 1, a pressure equalizing cover 3 installed on the head of the insulator 2 and passing through the insulator 2 Lead-out conductors 4 of the central hole.

[0033] The difference between the present invention and the prior art is that the insulator 2 includes a main insulating part 5 and an outer insulating part 6, the outer insulating part 6 covers the upper part 54 of the main insulating part 5, and the main insulating part 5 has a through A central hole 51, the central hole 51 is provided with a high-voltage shielding layer 57, the lead-out conductor 4 is directly connected to the cable guide core 101, and its connection 41 is located in the middle and lower part of the high-voltage shielding layer 57 in the central hole 51 , the root 52 of the main insulating part 5 is provi...

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Abstract

A prefabricated high-voltage cable terminal is disclosed that includes shell, insulator, equal pressure cover and educing conductor, the insulator includes main insulator and additional insulator, the main insulator has a center hole, the educing conductor connects with the core of the cable, and the connective part is in the shield layer of high voltage, the root of main insulator has root electric stress control part, and the upper electric stress control part is mounted on the top of main insulator, the prefabricated whole structure consists of main insulator, outer insulator, high voltage shield layer, root electric stress control part and top electric stress control part. The invention strikes out the insulator and the electric stress control part as a whole, the combined part between the insulator and the cable noumenon is reduced greatly, and the assembling is very easy, and guarantees the mechanical intensity, and the capacity structure of the combined insulator or the stress wimble structure can improve the reliability, and it can control the distribution of electric potential equally.

Description

technical field [0001] The invention relates to a high-voltage cable terminal, in particular to a prefabricated high-voltage cable terminal suitable for 66kV and above. Background technique: [0002] At present, the high-voltage cable terminals of 66kV and above in the international market are commonly used in dry-type insulating capacitor-shaped structures, oil-filled or non-oil-filled stress cone structures. Several structures have their own disadvantages. [0003] The stress cone cable terminal with oil-filled porcelain jacket has been used for the longest time, and its consumption and market share are currently the largest. This kind of terminal is after the cable end is pretreated, the stress cone is set on the insulation of the cable body, the stress cone shielding layer is connected with the shielding layer outside the cable insulation, the porcelain sleeve is set outside it, the cable guide core and the crimping clamp To connect, fill the insulating material betwee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G15/04H02G15/02
Inventor 王钰
Owner BEIJING NOBBEL ELECTRIC TECH DEV
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