Industrial production How to prevent static electricity Industrial production to prevent static electricity method Introduction

How to prevent static electricity in industrial production? To prevent static electricity, we must first try not to produce static electricity; The generated static electricity should be limited as much as possible so that it does not reach the dangerous level. Secondly, make the generated charge leak or neutralize as soon as possible, thus eliminating a large accumulation of charge. The following Xiaobian will introduce the method of preventing static electricity in industrial production.

Reduce triboelectrification

At present, the standards for controlling the flow rate in the world are not uniform. When determining the flow rate, it is necessary to consider not only the inner diameter of the pipeline, but also the influence of various factors such as the nature of the fluid, the composition and amount of impurities contained, and the material of the pipeline. The flammable liquid flowing in the pipeline, even if it has a high average charge density, often does not show a high voltage because of the large capacitance in the pipeline, and because there is no air in the pipeline, it will not cause combustion and explosion. In this case, although static electricity does not pose a danger inside the pipeline, its serious harm is mainly at the exit of the pipeline, which must be paid attention to.

Electrostatic grounding

The function of electrostatic grounding is to discharge the charge that may be gathered on the conductor, so that the conductor and the earth are equal potential, and the potential difference between the conductors is zero.

Resistivity reduction

When the resistivity of the substance is less than 106 ω.cm, the accumulation of static charge can be prevented. Ways to reduce resistivity:

A. Add conductive filler;

B. Use antistatic agent.

Increase air humidity

When the relative humidity of the air is more than 65-70%, the surface of the object often forms a very thin water film. The water film can dissolve CO2 in the air, so that the surface resistivity is greatly reduced, and the static charge is not easy to accumulate. If the relative humidity of the surrounding air drops to 40-50%, static electricity is not easy to escape, and it is possible to form a high potential. The common way to increase the humidity of the air is to spray fog into the air, generally choose a rotary fan sprayer, but the machine is not explosion-proof, must be blown into the wall.

Air ionization method

The use of electrostatic eliminator to ionize oxygen and nitrogen ions in the air, so that the air becomes a conductor, can effectively eliminate the electrostatic charge on the surface of the object. Commonly used static eliminator are: (a) induction static eliminator; (b) High voltage static eliminator.

Industrial production how to prevent static electricity, the above is the introduction of industrial production to prevent static electricity methods.