Heat shrinkable cable accessory and preparation method thereof

A technology of cable accessories and heat shrinkage, which is applied in the direction of cable accessories, electrical components, cable joints, etc., which can solve problems such as insufficient holding force, anti-pollution flashover, weak anti-creepage performance, and power line distortion

Inactive Publication Date: 2017-01-18
长春市宇程机电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are two main types of medium and high voltage cable accessories, heat-shrinkable and cold-shrinkable. Among them, the existing heat-shrinkable cable accessories have insufficient holding force, severe power line distortion, and generally have partial discharge failures. Weak creepage performance, which poses a safety hazard to electricity use

Method used

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  • Heat shrinkable cable accessory and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Such as figure 1 As shown, a heat-shrinkable cable accessory in the embodiment of the present invention includes:

[0033] The stress cone 1 and the heat-shrinkable shed assembly; the stress cone 1 and the heat-shrinkable shed assembly are injection-molded into one structure; or, the stress cone is sleeved on the part to be protected of the power distribution transmission line, The heat-shrinkable shed assembly is sleeved on the stress cone.

[0034] Wherein, the heat-shrinkable shed assembly includes a heat-shrinkable insulating tube 21 and a shed 22 . Stress cone 1 can choose conductive stress cone.

[0035] That is to say, the heat-shrinkable shed assembly includes a heat-shrinkable insulating tube and a shed arranged on the heat-shrinkable insulating tube.

[0036] In the embodiment of the present invention, the accessories can effectively control the partial discharge and ensure the safe operation of the wires and accessories; at the same time, the design of the...

Embodiment 2

[0045] A method for preparing a heat-shrinkable cable accessory in an embodiment of the present invention includes:

[0046] Step 1, preparing a stress cone;

[0047] Step 2, placing the prepared stress cone into the preset forming mold of the heat-shrinkable shed assembly;

[0048] Step 3, and then form a heat-shrinkable cable accessory with an integrated structure of the stress cone and the heat-shrinkable shed assembly by injection molding through the molding die.

[0049] The method in the embodiment of the present invention is designed by injecting the modified stress cone, the shed, and the insulating tube into one body. It has long creepage distance, relatively short cable accessories, and is easy to install. The heat-shrinkable cable accessories have high strength and good sealing performance. features.

[0050] The heat-shrinkable cable accessories prepared by the method in the embodiment of the present invention control the electric field stress through the heat-sh...

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Abstract

The invention discloses a heat shrinkable cable accessory and a preparation method thereof. The heat shrinkable cable accessory includes a stress cone and a heat shrinkable umbrella skirt component; the stress cone and the heat shrinkable umbrella skirt component are molded into a whole structure; or, the stress cone sleeves a to-be-protected part of a power distribution transmission line, and the heat shrinkable umbrella skirt component sleeves the stress cone. The heat shrinkable cable accessory can effectively control partial discharge to ensure safe operation of electric wires and accessories, and simultaneously, by the design of one body molding of the stress cone, an umbrella skirt and an insulation pipe, creepage distance can be ensured, and small space installation can be met. The heat shrinkable cable accessory not only has the characteristics of stable stress control performance and integration of a cold contraction cable accessory electric field, also has the advantages of good strength and sealing performance of heat shrinkable cable accessories, and is very suitable for operation and use in high-speed rails, electric multiple unit trains, iron manufacture and other harsh environment.

Description

technical field [0001] The invention relates to the field of cable accessories, in particular to a heat-shrinkable cable accessory and a preparation method. Background technique [0002] Cable accessories are products that connect cables with power transmission and distribution lines and related power distribution devices. Generally, they refer to the intermediate connections and terminal connections of various cables in cable lines. They form a power transmission network together with cables; cable accessories are mainly based on cable structures. It can not only restore the performance of the cable, but also ensure the extension of the cable length and the connection of the terminal. [0003] At present, there are mainly heat-shrinkable and cold-shrinkable types of medium and high-voltage cable accessories. Among them, the existing heat-shrinkable cable accessories have insufficient holding force, severe power line distortion, and generally have substandard partial dischar...

Claims

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Application Information

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IPC IPC(8): C08L23/00C08L21/00C08L23/08C08K3/04H02G15/18
CPCC08L23/00C08K3/04C08K2201/001C08L21/00C08L23/08C08L2205/02H02G15/1806C08L23/0815
Inventor 徐涵宇
Owner 长春市宇程机电有限公司
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