Test method of bonding strength of composite insulator
A composite insulator and bonding strength technology, applied in the direction of measuring devices, instruments, and mechanical devices, can solve problems such as partial discharge at the interface, composite insulator fracture, core rod and sheath aging, etc., to avoid partial discharge, Avoid aging and corrosion, the effect of simple and easy equipment
Active Publication Date: 2015-03-25
STATE GRID CORP OF CHINA +2
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Problems solved by technology
If the bonding strength between the sheath and the mandrel is not good, the interface is prone to partial discharge, resulting in aging and corrosion of the mandrel and the sheath, which may induce the fracture of the composite insulator
Method used
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Embodiment 1
[0033] like Figure 1-2 As shown, the invention of this example provides a method for testing the bonding strength of composite insulators, figure 1 It is a typical composite insulator, the fittings are fixed on both ends of the mandrel (glass fiber epoxy resin) by crimping, the insulating sheath (silicone rubber) is bonded to the mandrel, and the sheath (silicone rubber) is bonded to the sheath. The method is suitable for testing the bond strength between the composite insulator sheath and the mandrel and the test of the bond strength between the shed and the sheath of the composite insulator;
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The invention relates to a test method of a bonding strength of a composite insulator. The composite insulator comprises a core rod, a jacket which is arranged outside the core rod and an umbrella skirt which is arranged outside the jacket. The method is suitable for testing the bonding strength between the composite insulator jacket and the core rod and testing the bonding strength between the composite insulator umbrella skirt and the jacket. The method comprises the following steps: selecting a composite insulator jacket sample or samples of composite insulator umbrella skit and jacket; applying a pull force to the sample by virtue of a pull force device; determining the bonding strength when the sample is stripped by the pull force; and judging the bonding strength of the sample. The method is used for detecting and verifying the overall sealing performance of the composite insulator as well as detecting whether the junction of the insulator umbrella skirt is fractured or not and whether the bonding strength is smaller than the pull-apart strength of the umbrella skirt material.
Description
Technical field: [0001] The invention relates to a method for testing the bonding strength of a composite insulator, more particularly to a method for testing the bonding strength between a sheath and a mandrel and the bonding strength between an shed and a sheath. Background technique: [0002] In the field of high-voltage transmission, composite insulators are widely used due to their advantages of light weight and high pollution flashover voltage. The current test methods for the performance of composite insulators are basically aimed at the aging characteristics of the composite insulator sheath and shed material silicone rubber, and there is no good test method for the bonding quality of the sheath and mandrel, shed shed and sheath. Evaluation judgment. The bonding quality between sheath and mandrel, shed and sheath is the key to the inner and outer insulation quality of composite insulators. In particular, the bonding quality of the sheath and the mandrel is one of t...
Claims
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IPC IPC(8): G01N19/04
Inventor 滕国利魏杰周军高海峰魏霞邓桃
Owner STATE GRID CORP OF CHINA