Cross-linked multilayer composition for intermediate connection of tubular busbar and shielding cylinder prepared therefrom

A technology of cross-linked composition and tubular busbar, which is applied to the installation of busbars, tubular articles, and fully enclosed busbar devices, etc., can solve the problems of product quality problems, increased installation and maintenance costs of enterprises, hidden dangers of power transmission safety, etc. , to achieve excellent electrical performance and chemical stability, avoid frequent repair and maintenance costs, production operations and processes are simple and easy to implement

Active Publication Date: 2021-01-29
大连联合高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, when the on-site installation of the intermediate connection of the tubular busbar is carried out in China, due to the influence of the installation site environment (such as humidity, temperature, smog, dust, wind and sand, etc.) This method has a large electrical safety hazard, and the yield rate is low, which greatly increases the installation and maintenance costs of the enterprise.
At present, the intermediate connection technology of domestic tubular busbars includes epoxy resin perfusion and metal pipe wrapping. For example, CN202405737U uses epoxy resin and aluminum strip to make shielding cylinder, which has simple structure, easy installation and stable performance, but epoxy resin The cost is high, the working environment has the problem of whether VOC meets the standard, and it is easy to generate air bubbles during pouring, resulting in waste products, which eventually lead to high cost of the shielding tube and poor market competitiveness; at the same time, epoxy resin has poor impact resistance / toughness, and is easy to Causes brittle crack damage to the shielding tube, which brings safety hazards to power transmission
CN204030016U adopts the multilayer structure of copper tube, insulation and shielding material to make the shielding cylinder, which has the characteristics of small resistance and low heating efficiency, but the requirements for the production environment are high, the production process efficiency is low, and the production process requires high manual skills. Due to human factors, the product is prone to quality problems, resulting in low product quality pass rate and high cost

Method used

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  • Cross-linked multilayer composition for intermediate connection of tubular busbar and shielding cylinder prepared therefrom
  • Cross-linked multilayer composition for intermediate connection of tubular busbar and shielding cylinder prepared therefrom
  • Cross-linked multilayer composition for intermediate connection of tubular busbar and shielding cylinder prepared therefrom

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Embodiment approach

[0055] As an embodiment of the present invention, the conductive functional filler is selected from one or a mixture of carbon black, carbon nanotubes, graphite, and graphene.

[0056] In the present invention, the conductive functional filler is modified.

[0057] In the present invention, the preparation method of the modified conductive functional filler is as follows:

[0058] 1. Disperse 1 part of conductive functional filler in 5 parts of anhydrous N,N-dimethylformamide, add 3 parts of ethylenediamine, 1.9 parts of dicyclohexylcarbodiimide and 1.5 parts of 4-dimethylamino After pyridine, stirred at 50°C for 8 hours, filtered, washed, and dried in vacuum at 40°C for 12 hours to obtain compound 1;

[0059] 2. Disperse the compound 1 obtained in step 1 in 5 parts of N-methyl-2-pyrrolidone, then add 3 parts of dimethylaminopyridine, 2 parts of pyridine, 1.5 parts of triphenyl phosphite, 0.01 part of LiCl, 2 Parts of 3,5-diaminobenzoic acid, 1.8 parts of trimesic acid, 1.6 ...

Embodiment approach 1

[0154] Embodiment 1. This embodiment provides a cross-linked multilayer composition for the intermediate connection of tubular busbars. The multilayer composition includes three layers, which are the inner shielding layer, the middle crosslinked insulating layer and the outer multilayer from the inside to the outside. Double-wall co-extruded heat-shrinkable tubing insulation / shielding;

[0155] Wherein, the insulation / shielding layer of the outer multi-layer double-wall co-extruded heat-shrinkable sleeve is superimposed by a double-layer structure type co-extruded heat-shrinkable sleeve;

[0156] The double-layer structure co-extruded heat-shrinkable sleeve is composed of an inner insulating layer and an outer shielding layer.

Embodiment approach 2

[0157] Embodiment 2. The cross-linked multilayer composition for the intermediate connection of tubular busbars described in Embodiment 1, in parts by weight, the raw materials for the preparation of the inner shielding layer include:

[0158] 70-90 parts of polyamide hot melt adhesive, 10-30 parts of thermoplastic elastomer, 10-50 parts of conductive functional filler, 1-3 parts of antioxidant and 10-20 parts of lubricant.

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Abstract

The invention provides a cross-linked multi-layer composition for the intermediate connection of tubular busbars. The multi-layer composition includes three layers, which are an inner shielding layer, a middle cross-linked insulating layer and an outer multi-layer double-wall co-extrusion thermal insulation layer from the inside to the outside. Shrink sleeve insulation / shielding layer; wherein the outer multi-layer double-wall co-extruded heat-shrinkable sleeve insulation / shield layer is formed by superimposing double-layer structure co-extrusion heat-shrinkable sleeve; the double-layer structure type co-extrusion heat The shrink sleeve is composed of an inner insulating layer and an outer shielding layer; the cross-linked multilayer composition for the intermediate connection of the tubular bus provided by the invention and the shielding tube prepared therefrom, the inner conductor layer and the outer shielding layer ensure the intermediate connection of the tubular bus The surface electric field is evenly distributed, and the electrical insulation performance is strong, which avoids partial discharge on the surface, and is not interfered by the electric field and magnetic field of other phase tubular busbars. In addition, the main insulating material has excellent electrical properties and chemical stability, and can operate at low temperature Reliable, its service life is greatly extended, avoiding subsequent frequent repairs and maintenance costs.

Description

technical field [0001] The invention relates to the field of application of tubular busbar intermediate connection components for power transmission and transformation lines, and more particularly relates to a 10-35kV prefabricated cross-linked multilayer composition for tubular busbar intermediate connection and a shielding cylinder prepared therefrom. Background technique [0002] Tubular busbar has the characteristics of high current, good heat dissipation, low skin effect, low power loss, high mechanical strength, good insulation performance, anti-environmental interference, high safety factor, convenient installation and maintenance, and long service life. More and more customers have recognized and accepted it, and it has been widely used in power transmission and transformation lines. However, at present, when the on-site installation of the intermediate connection of the tubular busbar is carried out in China, due to the influence of the installation site environment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/00C08L23/08C08L23/06C08L51/06C08L23/16C08K13/06C08K13/02C08K9/04C08K9/02C08K3/04C08K3/22C08K5/134C08K5/526C08K5/09C08K5/5435H01B3/44H01B3/28H02G5/06H01B7/02H01B7/17H01B7/29B32B1/08B32B27/34B32B27/18B32B27/20B32B27/32B32B27/08B32B25/08B32B25/14B32B27/06B32B7/12
CPCB32B1/08B32B7/12B32B25/08B32B25/14B32B27/08B32B27/18B32B27/20B32B27/32B32B27/34B32B2264/102B32B2264/108B32B2307/206B32B2307/212B32B2307/7265B32B2307/734B32B2597/00C08K2003/2227C08K2201/001C08L23/06C08L23/16C08L77/00C08L2203/18C08L2205/03C08L2207/04C08L2207/066H01B3/28H01B3/441H01B7/02H01B7/17H01B7/29H02G5/061C08L23/0853C08K13/06C08K9/04C08K9/02C08K3/042C08K5/1345C08K5/526C08K5/09C08L51/06C08K13/02C08K3/22C08K5/5435C08L21/00
Inventor 王睿杨洋
Owner 大连联合高分子材料有限公司
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