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Large-diameter rod insulator mandrel

A technology of insulators and large diameters, applied in the direction of insulators, supporting insulators, electrical components, etc., can solve problems such as internal cracks, and achieve the effect of increasing strength

Inactive Publication Date: 2013-04-03
唐苑雯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the invention is to overcome defects and deficiencies such as internal cracks existing in the manufacturing process of large-diameter insulator core rods

Method used

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  • Large-diameter rod insulator mandrel
  • Large-diameter rod insulator mandrel
  • Large-diameter rod insulator mandrel

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Embodiment Construction

[0007] The structure and use of the present invention will be described in detail below in conjunction with the embodiments given in the accompanying drawings. Referring to the accompanying drawings, this kind of large-diameter rod-shaped insulator mandrel is characterized in that said mandrel (2) has an attached image 3 Annular groove (4) shown in . or have attached figure 2 the threaded groove (5) in the In order to make it suitable for the manufacturing needs of post insulators of different specifications and models, the mandrel is an epoxy resin rod. Or the so-called mandrel is a fiberglass epoxy resin rod. The size of the mandrel can be a combination of sizes.

[0008] For simple and convenient processing, the annular groove or thread groove on the mandrel is cut by lathe turning.

[0009] If mass-produced, the annular groove or threaded groove on the mandrel can be formed by mold casting or pouring.

[0010] In order to further increase the mutual bonding strengt...

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Abstract

The invention discloses a large-diameter rod insulator mandrel which is characterized in that the mandrel (2) is provided with circular grooves (4) or thread grooves (5). The large-diameter rod insulator mandrel has the advantage that after the grooves on the mandrel (2) are solidified, under the effect of solidified binder, intensity between the grooves is increased further. Through detection of an FZSPW-1120 / 16 type 1120kV composite large-pillar insulator made of the mandrel, bending strength is 18-20kN, twisting strength is 22-26kN-m, tensile strength is 210-250kN, and compression strength is 1550-1800kN. The parameters are much higher than recommended parameter, and rate of finished products is improved from the original of about 80% to 90%-92%.

Description

technical field [0001] The invention belongs to the technical field of rod-shaped composite insulators used in the technical field of electric power transmission and transformation, and specifically relates to a large-diameter rod-shaped insulator mandrel. Background technique [0002] At present, to manufacture large-diameter rod insulators, such as large-diameter post insulators, due to material limitations, it is necessary to use combined mandrels to undergo certain processes to form large-diameter mandrels. For example, the application number I applied for is: 200920280937.3 , the name is: a composite mandrel insulator, which discloses the insulator of this structure. However, due to the problems of the mandrel itself, it is easy to produce defects such as internal cracks after curing, so that the physical indicators such as tensile, compressive, and bending resistance of the insulator do not meet the requirements, and due to the existence of these internal cracks, large...

Claims

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Application Information

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IPC IPC(8): H01B17/40H01B17/14
Inventor 唐苑雯
Owner 唐苑雯
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