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Portable apparatus for measuring dielectric property of large-test-piece elastic material in non-linear stretching state

A technology of nonlinear stretching and elastic materials, applied in the direction of testing dielectric strength, etc., to achieve the effect of easy operation and control

Inactive Publication Date: 2015-11-18
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, although it is known that cable accessories are in a nonlinear tension state in actual operation, existing research is mainly for single-layer or composite materials that are not stretched or in a uniform tension state.

Method used

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  • Portable apparatus for measuring dielectric property of large-test-piece elastic material in non-linear stretching state
  • Portable apparatus for measuring dielectric property of large-test-piece elastic material in non-linear stretching state
  • Portable apparatus for measuring dielectric property of large-test-piece elastic material in non-linear stretching state

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Embodiment Construction

[0022] The present invention is described in further detail below in conjunction with accompanying drawing:

[0023] see figure 2 , the present invention comprises a base 106, the base 106 is provided with a lower plate 105 for placing a flat sample, and the base 106 is fixed with an upper plate 103 for fitting and compressing a flat sample with the lower plate 105; the two grooves of the base 106 A threaded blind hole matching the first vertical screw 101 and the second vertical screw 102 is provided on the side, and a threaded through hole is provided at a corresponding position on the upper plate 103 . A boss is provided at the end of the groove of the base 106 , and the horizontal screw 104 penetrates through the boss and is connected to the rear end surface of the lower plate 105 . The upper plate 103 is fixedly connected with the base 106 through the first vertical screw 101 and the second vertical screw 102 . The lower plate 105 is arranged in a groove on the upper s...

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Abstract

The invention discloses a portable apparatus for measuring the dielectric property of a large-test-piece elastic material in a non-linear stretching state. The portable apparatus comprises a base, the base is provided with a lower flat plate used for placing a flat plate sample, an upper flat plate used for being attached to the lower flat plate and compressing the flat plate sample is fixed on the base, and the lower flat plate is arranged in a groove arranged on the upper surface of the base and is driven to perform one-dimensional movement in the groove by a horizontal screw rod connected to one end of the lower flat plate. According to the portable apparatus, the upper surface and the lower surface of the sample are fixed via a clamp, and non-linear stretching of the sample can be realized via the movement of the clamp. The conventional measuring device can only test the performance of the sample in the non-linear stretching state or perform linear stretching of the sample by employing the conventional clamp and test the dielectric property (space charge characteristic, resistivity characteristic, and dielectric property etc.) of the sample, the apparatus provides important theoretical values for the change mechanism of the dielectric property of the research material in the stretching state or the non-linear stretching state and important engineering application values for further improvement of the design structure of cable accessories, accurate control of the stretching length can be realized via the control of the screw rod, and continuous transformation of the stretching rate of the same sample can be realized.

Description

【Technical field】 [0001] The invention belongs to the technical field of material performance testing devices, and relates to a portable measuring device, in particular to a portable device for measuring the dielectric properties of a large test piece elastic material in a nonlinear tensile state. 【Background technique】 [0002] Cable transmission lines are an important part of power systems, and cable terminals or cable intermediate joints (collectively referred to as cable accessories) are one of the essential electrical equipment in cable transmission lines. Rubber materials are currently widely used in the production of cable accessories because of their excellent weather resistance, heat and cold resistance, insulation and corona resistance. In order to make the interface between the cable and the cable accessories have a certain surface pressure. The cable accessories are in the expanded state during and after installation. And because the insulation of the cable ter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
Inventor 王海田李文鹏张宇巍王陈诚王霞
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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