Split type high-pressure cavity structure for comprehensive dielectric property measurement and measurement method thereof

Abstract

The invention relates to a split type high-pressure cavity structure for comprehensive dielectric property measurement and a measurement method thereof. The split type high-pressure cavity structure comprises an anti-expansion protection steel sleeve, an epoxy glass fiber sleeve, a first connecting hole and a second connecting hole, the epoxy glass fiber sleeve is sleeved with the anti-expansion protection steel sleeve, and the first connecting hole is located above the second connecting hole; and the anti-expansion protection steel sleeve and the epoxy glass fiber sleeve are each of an up-down split structure, and the split interface of the anti-expansion protection steel sleeve and the split interface of the epoxy glass fiber sleeve are both located below the first connecting hole. When a polymer flat plate sample is tested, the polymer flat plate sample is positioned below the split interface of the epoxy glass fiber sleeve; and the epoxy glass fiber sleeve is made of glass fibers. Compared with the prior art, the risk that a polymer flat plate sample is extruded to peripheral gaps under high pressure intensity is prevented, the epoxy glass fiber composite material is adopted as an inner layer sleeve material, and the accuracy of a comprehensive dielectric property measurement result is ensured due to the good insulating property of the epoxy glass fiber composite material.

Description

technical field [0001] The invention relates to the technical field of comprehensive dielectric property measurement of insulating materials, in particular to a split-type high-pressure cavity structure and a measurement method for comprehensive dielectric property measurement. Background technique [0002] High-voltage subsea direct current transmission is crucial for cross-sea power transmission and distribution such as island wind farms and photovoltaic power generation. Compared with inter-island overhead line transmission, it has a stronger ability to cope with severe weather such as strong wind, lightning strike, pollution, ice and snow, and the submarine power transmission cable has a long service life, stable transmission quality, and is not easily affected by external electromagnetic interference. The inter-island power transmission in the world mostly adopts the high-voltage submarine power transmission with obvious advantages, so the application of submarine cable...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a split type for comprehensive dielectric property measurement in order to overcome the defects in the prior art that the existing pressure chamber cannot withstand high pressure or when the polymer sample is extended and extruded when subjected to high pressure, which will affect peripheral devices. High pressure cavity structure and measurement method

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