Power supply apparatus generating electrostatic field

Abstract

The invention discloses a high voltage supply technology used for industrial electrostatic precipitation, comprising a three-phase AC voltage regulating circuit (I), a three-phase step-up transformer (II), a 12-pulse rectifier circuit (III), a current limiting circuit (IV), etc. The three-phase, electrostatic field-generating power supply apparatus is applied between a corona wire and an electrode plate of an electrostatic precipitator, realizing the aim of purifying certain medium in the flue gas, such as dust, fine particles, etc. in flue gas through the electrostatic adsorption effect of the generated electrostatic field. The goal of voltage-regulating is obtained by adjusting a silicon controlled rectifier conduction angle of three-phase AC input, which is the controlling way of the power supply. The output produced by the step-up transformer is rectified into a direct current high voltage through the 12-pulse rectifier and the direct current high voltage is applied on the electrostatic precipitator through a current-limiting circuit. Compared with a traditional power supply apparatus of the electrostatic precipitator, the power supply apparatus of the invention has advantages of high efficiency, large power, lower noise, less impact on an electrical network and fewer harmonic waves, which is more suitable for the industrial purifying and processing of large amount of flue gas.

Description

technical field [0001] The invention relates to the technical field of high-voltage electrostatic dust removal, in particular to the application field of electrostatic dust removal by generating an electrostatic field generated by a high-power power supply device. Background technique [0002] At present, the power supply widely used in high-voltage electrostatic dust removal adopts the input of AC line voltage 380 volts. After AC voltage regulation by the thyristor, the power frequency step-up transformer is added to boost the voltage, and then the high-voltage silicon stack is full-wave rectified to generate a negative voltage. High voltage acts between the corona wire and the electrode plate of the electrostatic precipitator, through the electrostatic adsorption effect of the electric field generated by it, to achieve the purpose of purifying certain media in the flue gas, such as dust and fine particles in the flue gas. Its advantages are simple structure and low cost. ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a power supply device that generates an electrostatic field to solve the technical problems of low efficiency, large output ripple, serious harmonic pollution to the power grid, and large noise in the traditional high-voltage electrostatic dust removal power supply

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