Mandrel rod for high-performance post composite insulator and manufacturing method thereof

Abstract

The invention discloses a core rod for a high performance pillar composite insulator, and a manufacturing method of the core rod. The core rod comprises an inner core rod and a winding tube arranged at an outer side of the inner core rod, wherein the winding tube is formed through winding and curing high strength glass fiber dipped with epoxy resin glue. The core rod is characterized in that the inner core rod is formed through injection of the epoxy resin glue, the winding tube comprises a first ply layer and a second ply layer, the first ply layer and the second ply layer are respectively formed through winding and curing the high strength glass fiber dipped with the epoxy resin glue, thickness of the first ply layer is 5-10mm, thickness of the second layer is 5-10mm, and the epoxy resin glue is prepared from CYD128 resin, methyl tetrahydrophthalic anhydride, epoxy flexibilizer and dimethyl benzylamine according to a mass ratio of 100:80:10:4. The invention further discloses a manufacturing method of the core rod for the high performance pillar composite insulator. The high performance pillar composite insulator is advantaged in that the structure is simple, performance is reliable, bending strength is greater than 1000MPa, use cost is low, and great practical and popularization values are realized.

Description

technical field [0001] The invention belongs to the technical field of manufacturing mandrels for composite insulators, and in particular relates to a mandrel for high-performance post composite insulators and a manufacturing method thereof. Background technique [0002] Hollow composite post insulators use hollow insulating tubes as posts and are filled with insulating gas or foam for insulation. Since the gas and fillings are prone to leakage, it is necessary to monitor the changes of the internal gas and fillings, and there are certain hidden dangers in safety. The solid composite post insulator completely relies on the glass fiber mandrel to bear the mechanical load. The patent with the notification number of CN101752044A discloses a mandrel for UHV post composite insulator and its manufacturing method. The mandrel for UHV post composite insulator adopts pull The extruded rod is the inner core, the outside is wound with glass fiber, and the surface of the rod core is pro...

AI Technical Summary

Problems solved by technology

[0002] Hollow composite post insulators use hollow insulating tubes as posts and are filled with insulating gas or foam for insulation. Since the gas and fillings are prone to leakage, it is necessary to monitor the changes of the internal gas and fillings, and there are certain hidden dangers in safety.

The solid composite post insulator completely relies on the glass fiber mandrel to bear the mechanical load. The patent with the notification number of CN101752044A discloses a mandrel for UHV post composite insulator and its manufacturing method. The mandrel for UHV post composite insulator adopts pull The extruded rod is the inner core, the outside is wound with glass fiber, and the surface of the rod core is processed with a damping groove, and a large-diameter mandrel is formed through layered winding and solidification, so that the performance of the wound tube is higher. However, because the inner mandrel is a tensile Extruded rod, but the modulus of the pultruded rod and the winding layer do not match, the deformation of the two is quite different when heated and stressed, and it is easy to delaminate, which makes the life of the mandrel short.

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