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Measuring system for measuring sand charge quantity

A technology for measuring system and charging quantity, which is applied in the direction of measuring electrical variables, measuring devices, instruments, etc., and can solve problems such as measurement errors and difficulty in collecting charged sand particles

Active Publication Date: 2019-03-08
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using a Faraday cup to measure the electricity of a charged body, it is necessary to ensure the sealing of the electric field, otherwise measurement errors will occur, so it is difficult to collect charged sand particles

Method used

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  • Measuring system for measuring sand charge quantity
  • Measuring system for measuring sand charge quantity
  • Measuring system for measuring sand charge quantity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Such as figure 1 As shown, a measurement system for measuring the charge of sand grains includes a support 1, in which a nylon mesh 2, a grounding mesh 3, a corona mesh 4, and two oppositely arranged An air ion filter plate 5, a shielding plate 6, and a sand collection bucket 7, the sand collection bucket 7 is located at the bottom of the support 1, the bottom of the sand collection bucket 7 is provided with an insulating plate 8, and the nylon mesh 2 is provided with a wireless remote control vibrator 12, the shielding plate 6 is provided with openings, the sand collection bucket 7 is connected to the megger 9 through the double-layer shielding wire 13, and the megger 9 is connected to the current collection device, the current acquisition device is connected to the computer 10.

[0038] Wherein, the present embodiment also includes an electronic balance 11 . Described corona net 4 is the corona net that applies high voltage, by adjusting the voltage of corona net 4,...

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Abstract

The invention discloses a measuring system for measuring sand charge quantity. The system comprises in order from top to bottom: a sand dust flow manufacturing device used for controlling the start and stop of the sand dust flow and the concentration and the grain size of charged dust; a sand dust charging device used for control the charge of experimental dust; oppositely arranged air ion filterplates used for filtering air ion interference on measurement results; an opening shield disk for shielding the external electric field and ensuring charge sand collection; a sand collection bucket for collecting charged sand; and a charge measurement system for high-precision measurement of dust charge quantity. The objective of the invention is to provide a measuring system for measuring sand charge quantity which can accurately measure the charge quantity of the sand and facilitate research of the sand charge features.

Description

technical field [0001] The invention relates to the technical field of external insulation of power transmission lines, in particular to a measuring system for measuring the electric charge of sand grains. Background technique [0002] The asymmetric friction of sand particles in the natural environment when creeping, suspending, and jumping movement causes sand electrification, and these charged sand particles may threaten the safe operation of transmission lines. Since the existing wind-sand test device cannot realize such a complicated form of sand movement, in practice, the method of corona charging is often used to force the sand particles to be charged. In order to quantitatively simulate the real wind-sand power environment, accurate acquisition of sand charge is particularly critical. At present, the existing methods for measuring the charge of particulate matter include the mesh target method, the ELPI (electrostatic low-voltage impactor) measurement method, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/24
CPCG01R29/24
Inventor 刘云鹏黄志成康钧毕腾耿江海丁玉剑姚修远王生富马旭东包正红张重远
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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