Longitudinal tensile insulating dielectric electrical property measuring device and measuring method thereof

Abstract

The invention provides a longitudinal tensile insulating dielectric electrical property measuring device and a measuring method thereof. The longitudinal tensile insulating dielectric electrical property measuring device is characterized by comprising a high voltage power supply, a support frame, a fixing seat disposed on the support frame, a limiting plate matched with the fixing seat and disposed on the lower portion of the fixing seat, a rotating shaft respectively connected with the supporting frame and the limiting plate and located below the limiting plate, an upper electrode member anda lower electrode member sequentially connected with the rotating shaft, a driving assembly for pulling the lower electrode member and a hollow sealing cavity covering the upper electrode member and the lower electrode member. The device has the advantages of achieving the measurement of breakdown field strengths of an insulating dielectric original sample and the sample after stretched in the directions of an upper electrode and a lower electrode, breaking through the limitation that the tested insulating dielectric sample can only be transversely stretched, and achieving the simulated measurement of the insulating dielectric sample under tensile and pressure states.

Description

technical field [0001] The invention relates to the technical field of experimental measurement for measuring the variation law of the electric resistance of insulating dielectric samples with the deformation in the direction of the electric field, in particular to a device for measuring the electrical properties of longitudinally stretched insulating dielectrics and a measuring method thereof. Background technique [0002] At present, the exploration of insulating materials for high-voltage DC cables is a research hotspot, especially with the rapid development of nanocomposite insulating materials and chemically modified insulating materials, the research on the basic dielectric properties of new composite materials has become more and more extensive and in-depth. Experimentally, it is of great significance to simulate the influence of different deformation states of the insulating dielectric composite material on its electrical conductivity or DC breakdown strength under th...

AI Technical Summary

Problems solved by technology

However, the existing experimental measurement devices for the conductivity or DC breakdown strength of insulating dielectric samples can only realize the stretching of the sample in the cross-sectional direction or the compression in the longitudinal direction, and cannot study the behavior of the sample when it is stretched and deformed in the direction of the electric field. Dielectric properties change characteristics

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