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Preparation method for insulator mandril

A technology for insulators and mandrels, which is applied in the field of preparation of large-diameter insulator solid mandrels, can solve the problems of low strength and rigidity, unreasonable curing process, lengthy surface treatment process, etc., achieve reasonable process, reduce production cost, avoid The effect of material waste

Active Publication Date: 2016-11-23
北玻电力复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method still uses the winding method to prepare the mandrel, so that there is a large angle between the glass fiber and the solid mandrel axis, and the strength and rigidity of the final product are not high
In addition, the surface treatment process of the above method is lengthy and the curing process is unreasonable, and there is still room for further improvement

Method used

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  • Preparation method for insulator mandril

Examples

Experimental program
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Effect test

Embodiment 1

[0032] 1) Select a solid pultruded insulating mandrel with a diameter of 110mm and a length of 2.5m; sandblast its outer surface to remove the resin-rich layer on the outer surface; and scrub the outer surface with alcohol to remove surface impurities.

[0033] 2) Select a glass fiber unidirectional cloth with a width of 2.5m, and wind it onto the solid mandrel processed in step 1), with a winding angle of 0 and a winding diameter of 280mm to form a mandrel prefabricated body, wherein , the angle between the glass fiber and the central axis of the solid mandrel is about 0±3°.

[0034] 3) Place the mandrel prefabricated body obtained in step 2) in a vacuum injection molding mould. After the mold is closed, the vacuum injection process is used for injection molding. The relative vacuum degree of the vacuum injection molding mold is kept at -0.085MPa, and the injection of epoxy resin The speed is 400g / min, and the injection and reflow time of epoxy resin is 5h.

[0035] 4) After...

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Abstract

The invention discloses a preparation method for an insulator mandril. The preparation method comprises: (1), carrying out surface processing; (2), carrying out winding; (3), carrying out vacuum infusion moulding; and (4), carrying out solidification. According to the invention, an included angle between a glass fiber of a piece of unidirectional glass fiber cloth and a central shaft of a solid mandril is controlled to be between 0 to 10 degrees; the breadth of the unidirectional glass fiber cloth is close to the length of the solid mandril; and the winding angle of the unidirectional glass fiber cloth is basically zero, so that the insulator mandril with high strength can be obtained. With the method, a large-diameter insulator mandril can be produced rapidly; the procedures are reasonable; material wasting can be avoided; and the production cost can be lowered.

Description

technical field [0001] The invention relates to an insulator mandrel used for power transmission and transformation in the electric power industry, in particular to a method for preparing a large-diameter insulator solid mandrel. Background technique [0002] The existing post insulators for power transmission and transformation mainly include porcelain post insulators and composite post insulators. Compared with porcelain post insulators, composite post insulators have the characteristics of light weight, high strength, and pollution flashover resistance, and are more and more widely used in high-voltage power transmission and transformation. With the continuous development of my country's power transmission technology in the direction of high voltage, long distance and high capacity, the demand for composite post insulators is increasing, and the performance requirements are also getting higher and higher. As the voltage level continues to increase, this requires that the...

Claims

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Application Information

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IPC IPC(8): H01B19/00H01B17/14
CPCH01B17/145H01B19/00
Inventor 张雄军陈铃飞胡平潘宝鹏赵卫生南无疆李安睿郝春功
Owner 北玻电力复合材料有限公司
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