Preparation method of large-diameter composite insulator solid core rod

A composite insulator and large-diameter technology, which is used in the field of preparation of large-diameter composite insulator solid mandrels, can solve the problems of unmoving pultrusion, damage to the mold, slow speed, etc. Effect

Active Publication Date: 2010-06-16
陕西泰普瑞电工技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the limitations of the existing process, the continuous pultrusion process cannot realize the preparation of epoxy glass fiber core rods with a diameter greater than 130mm or the success rate is very low
The reasons are as follows. During the curing and molding process of the large-diameter mandrel, due to the large diameter of the mandrel, the heat on the mold is transmitted to the inside of the mandrel at a slower speed; if the formed glass fiber mandrel slows d

Method used

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  • Preparation method of large-diameter composite insulator solid core rod
  • Preparation method of large-diameter composite insulator solid core rod
  • Preparation method of large-diameter composite insulator solid core rod

Examples

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Embodiment 1

[0030] A method for preparing the secondary winding of a large-diameter composite insulator solid mandrel is carried out according to the following steps:

[0031] 1) According to customer requirements, the diameter of the solid pultruded insulating mandrel is ≤130mm;

[0032] 2) Roughen the outer surface of the solid mandrel to facilitate bonding with the secondary winding part, and the roughness is

[0033] 3) Scrub the outer surface of the processed solid mandrel with acetone and put it in an oven at a constant temperature of 40°C for 30 minutes;

[0034] 4), the outer surface of the solid mandrel is coated with 2% KH560 absolute ethanol solution, and then put into the oven for 40

[0035] ℃ constant temperature for 1 hour;

[0036] 5), the configuration of the resin glue: the composition ratio of the resin glue is E44 epoxy resin: modified imidazole curing agent: toughening agent: active silica powder = 90~110: 90~110: 9~11: 5~10; The curing agent is methyl tetraphtha...

Embodiment 2

[0042] A method for preparing the secondary winding of a large-diameter composite insulator solid mandrel is carried out according to the following steps:

[0043] 1) According to customer requirements, the diameter of the solid pultruded insulating mandrel is 120mm;

[0044] 2) Roughen the outer surface of the solid mandrel to facilitate bonding with the secondary winding part, and the roughness is

[0045] 3) Scrub the outer surface of the processed solid mandrel with acetone and put it in an oven at a constant temperature of 40°C for 30 minutes;

[0046] 4) The outer surface of the solid mandrel is then coated with 2% KH560 absolute ethanol solution, and then placed in an oven at a constant temperature of 40°C for 1 hour;

[0047] 5), the configuration of the resin glue: the composition ratio of the resin glue is E44 epoxy resin: modified imidazole curing agent: toughening agent: active silica powder = 90~110: 90~110: 9~11: 5~10; The curing agent is methyl tetraphthalic a...

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Abstract

The invention discloses a preparation method of a large-diameter composite insulator solid core rod. The preparation method comprises the following steps of: selecting a solid pultrusion insulating core rod with a diameter not larger than 130mm; roughly processing the outer surface of the core rod, washing the outer surface by using acetone, then putting the core rod in an oven and keeping temperature constant; coating a 2 percent absolute alcohol solution on the outer surface of the core rod, then putting the core rod in the oven and keeping the temperature constant for 1 hour; weighing resin glue in proportion, pouring the resin glue into a vacuum stirrer, stirring for 20 minutes in vacuum and standing for 50 minutes; mounting the treated solid core rod on a numerical control winding machine and starting winding until the winding machine winds to a design size; vacuumizing and injecting the resin glue; after finishing injecting the resin glue, closing valves at both ends and putting the core rod in a curing oven for heating and stepped curing; and processing the outer surface and determining the size as a required length. The prepared core rod has high bonding strength and small-angle winding, and the content of resin of a secondary winding layer is similar to that of the matrix solid rod. The bonding of interlayer interfaces is firm, and cracks cannot occur, thus the prepared core rod can be widely applied to electric overhead lines.

Description

technical field [0001] The invention relates to an insulator connected with a power wire, in particular to a method for preparing a large-diameter composite insulator solid mandrel with a diameter greater than 130mm. Background technique [0002] Composite insulators are composed of mandrel (core body), fittings, and silicone rubber sheath. The mandrel body plays the role of internal insulation and transfers mechanical load. . Among them, the role of mandrel body is the most important and critical. The mandrel body used as internal insulation is divided into solid mandrel body and hollow mandrel body. The product produced with hollow mandrel body is called hollow composite insulator, and the product produced with solid mandrel body is called solid composite insulator. Solid composite insulators include the following three types: suspension composite insulators, column composite insulators and curved wall composite insulators. [0003] At present, as hollow composite insul...

Claims

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Application Information

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IPC IPC(8): H01B19/00
Inventor 吴亚民
Owner 陕西泰普瑞电工技术有限公司
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