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Connection sealing structure of electric transmission line and application

A sealing structure and electrical transmission technology, applied in the direction of conductive connection, electrical component connection, connection, etc., can solve the problems of affecting the sealing effect of the intermediate connector, poor peeling construction of the electrical transmission line, untreated smooth surface, etc., to achieve excellent anti-fouling. Flashing, good waterproof performance, the effect of avoiding air gap defects

Pending Publication Date: 2020-04-21
HANGZHOU XINENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the installation process, the stripping construction of the electric transmission line was not done well, and the surface was not smooth, which greatly affected the sealing effect of the intermediate connector. These irregular parts produced tip discharge due to the concentration of the electric field, resulting in a breakdown accident

Method used

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  • Connection sealing structure of electric transmission line and application
  • Connection sealing structure of electric transmission line and application
  • Connection sealing structure of electric transmission line and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] An adhesive of cross-linked polyethylene and silicone rubber, comprising A and B, wherein,

[0042] A comprises the following components by weight:

[0043] 100 parts of hydroxyl silicone oil, 10 parts of basic crosslinking agent, 10 parts of additional crosslinking agent and 5 parts of hydrophobic fumed silica;

[0044]The basic crosslinking agent consists of 2 parts of methyltrimethoxysilane, 2 parts of methyltriethoxysilane, 2 parts of vinyltrimethoxysilane, 2 parts of vinyltriethoxysilane, 2 parts of Composed of phenyltrimethoxysilane; additional crosslinking agent consists of 2 parts of isocyanatopropyltriethoxysilane, 2 parts of vinyltriisopropenoxysilane, 2 parts of methyltriisopropenoxysilane , 2 parts of phenyl triisopropenyloxysilane, 2 parts of tetramethylguanidinopropyl trimethoxysilane;

[0045] B comprises the following components by weight:

[0046] 100 parts of hydroxy silicone oil, 5 parts of hydrophobic fumed silica and 0.2 part of catalyst;

[004...

Embodiment 2

[0050] An adhesive of cross-linked polyethylene and silicone rubber, comprising A and B, wherein,

[0051] A comprises the following components by weight:

[0052] 100 parts of hydroxyl silicone oil, 20 parts of basic crosslinking agent, 20 parts of additional crosslinking agent and 10 parts of hydrophobic fumed silica;

[0053] The basic crosslinking agent consists of 4 parts of methyltrimethoxysilane, 4 parts of methyltriethoxysilane, 4 parts of vinyltrimethoxysilane, 4 parts of vinyltriethoxysilane, 4 parts of Composed of phenyltrimethoxysilane; additional crosslinking agent consists of 4 parts of isocyanatopropyltriethoxysilane, 4 parts of vinyltriisopropenoxysilane, 4 parts of methyltriisopropenoxysilane , 4 parts of phenyl triisopropenyloxysilane, 4 parts of tetramethylguanidinopropyl trimethoxysilane;

[0054] B comprises the following components by weight:

[0055] 100 parts of hydroxy silicone oil, 10 parts of hydrophobic fumed silica and 0.3 part of catalyst;

[...

Embodiment 3

[0059] An adhesive of cross-linked polyethylene and silicone rubber, comprising A and B, wherein,

[0060] A comprises the following components by weight:

[0061] 100 parts of hydroxyl silicone oil, 25 parts of basic crosslinking agent, 30 parts of additional crosslinking agent and 15 parts of hydrophobic fumed silica;

[0062] The basic crosslinking agent consists of 5 parts of methyltrimethoxysilane, 5 parts of methyltriethoxysilane, 5 parts of vinyltrimethoxysilane, 5 parts of vinyltriethoxysilane, 5 parts of Composed of phenyltrimethoxysilane; the additional crosslinking agent consists of 6 parts of isocyanatopropyltriethoxysilane, 6 parts of vinyltriisopropenoxysilane, 6 parts of methyltriisopropenoxysilane , 6 parts of phenyl triisopropenyloxysilane, 6 parts of tetramethylguanidinopropyl trimethoxysilane;

[0063] B comprises the following components by weight:

[0064] 100 parts of hydroxy silicone oil, 15 parts of hydrophobic fumed silica and 0.5 part of catalyst; ...

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Abstract

The invention discloses a connection sealing structure of an electric transmission line, and relates to the field of electric power engineering. The key points of the technical scheme are as follows:the connection sealing structure comprises a structural layer which is arranged on the electric transmission line and is made of a cross-linked polyethylene material, and a protective layer which is coated on the outer side of the structural layer and is made of a silicon rubber material, wherein a self-made adhesive layer is arranged between the structural layer and the protective layer, and theadhesive layer is dissolved and compounded on the inner walls of the structural layer and the protective layer so that the structural layer and the protective layer form an integrated fusion type interface. The self-made adhesive layer is adopted, the adhesive layer enables the cross-linked polyethylene material and the silicone rubber material to be fused into an integrated structure in a chemical mode, the possibility of existence and generation of air gaps is fundamentally eliminated, and thus the voltage resistance is improved, and air gap discharge is avoided. Due to the existence of theadhesive layer, the connection sealing structure has a certain repairing capability, construction defects generated in the construction process can be eliminated, and breakdown accidents caused by thefact that moisture permeates from the wire core and the outside along the pressing interface can be prevented.

Description

technical field [0001] The invention relates to the field of electric power engineering, in particular to a connection sealing structure and application of an electric transmission line. Background technique [0002] Due to its reasonable structure and excellent electrical performance, XLPE cables have been widely used in distribution networks and have gradually replaced traditional oil-paper insulated cables. However, factors such as rough cable manufacturing technology, poor construction technology, man-made damage, and harsh operating environment will cause insulation defects in XLPE cables and affect their insulation performance. The State Grid Corporation of China has made statistics on the operation failures and defects of power cable equipment. The statistics show that more than 95% of the operation failures of power cables are caused by the substandard quality of the cable accessories installers during installation. [0003] Such electrical transmission lines like c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/00H01B7/02H01B7/17H01B7/282H01B7/285H01B9/00H01R11/09C09J183/04C09J11/04C09J11/06
CPCC08K2201/014C09J11/04C09J11/06C09J183/04H01B7/009H01B7/02H01B7/17H01B7/282H01B7/285H01B9/00H01R11/09C08K13/04C08K7/26C08K5/5419C08K5/5425C08K5/5475C08K5/5465C08K5/544C08K5/5435
Inventor 佘晓峰胡克勍刘文斌
Owner HANGZHOU XINENG NEW MATERIAL CO LTD
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