Device and method for measuring static electricity generation by impact of particles

Abstract

The invention discloses a device and method for measuring static electricity generation by the impact of particles. An oblique sliding rail is arranged by using a pedestal, a bracket, a clamp and a circular tube sliding rail. A general Faraday cup, a Faraday cup, and an electrometer are connected. A sliding particle passes the general Faraday cup through the sliding rail and thus an electric charge of the sliding particle before an impact is measured; the sliding particle leaves the sliding rail, impacts on a suspension particle, and then falls into the Faraday cup to measure an electric charge of the sliding particle after the impact. The electric charge before the impact is subtracted from the electric charge after the impact, so that the electrostatic charge generated after the impact of the two particles is calculated accurately. According to the invention, the electrostatic charge generated after the impact on the suspension particle can be measured and mutual verification with the electrostatic charge amount generated after impact with the sliding particle is realized.

Description

technical field [0001] The invention belongs to the field of collision electrification of gas-solid two-phase flow solid particles, and relates to a technology for measuring the amount of static electricity generated by particle-particle collisions. Background technique [0002] Particle electrification is a ubiquitous phenomenon in industrial production processes. In the process of particle crushing, screening, granulation and transportation, due to the violent collision and friction between particles and between particles and walls, the charging phenomenon of particles is very obvious. A large amount of electrostatic accumulation of particles will lead to agglomeration and wall sticking, and even electrostatic discharge, causing serious accidents such as fire and explosion. [0003] The problem of particle charging not only widely exists in people's production and life, but also often occurs in nature due to the phenomenon of static electricity caused by particle-to-parti...

AI Technical Summary

Problems solved by technology

Even in remote space, there is a problem of particle static electricity: the dust storm on the moon or Mars will cause the particle charge in space to be much larger than the particle charge on the earth in order of magnitude

Therefore, ignoring the amount of charge before the collision of sliding particles seriously affects the measurement accuracy of the static electricity generated by the collision of two particles

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