Composite Hollow Insulator Structure for Burst-Resistant Strength
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Solution Overview
Problem
Existing hollow insulators for high electrical voltages face challenges in achieving both mechanical stability and burst resistance, with ceramic insulators being mechanically strong but prone to bursting under high gas pressure, while composite materials offer better burst resistance but are less stable.
Innovation Solution
A hollow insulator design combining a ceramic or plastic insulating tube sheathed with fiber-reinforced plastic, optionally with an electrically insulating shield and flanges, manufactured through vacuum impregnation of fiber mats, enhancing mechanical stability and burst resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If hollow insulators are made from ceramic materials, then mechanical strength is improved, but bursting resistance deteriorates
Solution Approach 1:
The patent applies composite materials by combining a ceramic insulating tube with a fiber-reinforced plastic sheathing layer. The ceramic core provides high mechanical strength and electrical insulation, while the fiber-reinforced plastic outer layer provides bursting resistance and toughness. This composite structure resolves the contradiction by allowing each material to contribute its superior properties to the overall insulator performance.
2Reliability
If hollow insulators are made from fiber-reinforced plastics, then bursting resistance is improved, but mechanical stability deteriorates
Solution Approach 1:
The patent uses a composite structure where the fiber-reinforced plastic is applied as a sheathing layer around a ceramic insulating tube. This configuration allows the ceramic core to bear the mechanical loads requiring high strength, while the fiber-reinforced plastic layer provides the bursting resistance. The composite design eliminates the need to choose between the two materials' opposing strengths.
3Adaptability or versatility
If hollow insulators are used outdoors, then versatility is improved, but exposure to harmful factors increases
Solution Approach 1:
The patent applies local quality by adding an electrically insulating shielding layer specifically on the outer surface of the fiber-reinforced plastic sheathing. This shielding layer is positioned exactly where weather exposure occurs, providing protection against precipitation and environmental factors without affecting the internal structural components. The shielding has a hydrophobic effect that repels water while maintaining electrical insulation properties.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The combined design provides improved mechanical stability and enhanced burst resistance, suitable for outdoor use under varying weather conditions, with reliable connections to other components.
Implementation Method 1
the insulating tube with the fiber-reinforced plastic sheathed in that at least one prefabricated fiber mat is arranged around the insulating tube and the plastic is then introduced into the at least one fiber mat by vacuum impregnation
Data Source
AI summary
The invention relates to a hollow insulator (1) for high electric voltages. Said hollow insulator (1) comprises an insulating tube (3) and a covering (5) of the insulating tube (3) made from a fiber-reinforced plastic, which is placed on an outer surface of the insulating tube (3). The invention further relates to a method for producing said type of hollow insulator (1).