KR100575271B1 - The high voltage power supply for electric dust collector - Google Patents

Abstract

The present invention relates to a power supply device of an electrostatic precipitator, and in particular, by installing a high voltage device inside the precipitator of the electrostatic precipitator to enable a worker to work in a state insulated from the high voltage device to achieve a safer working environment and high voltage The present invention relates to a power supply device of an electrostatic precipitator that can reduce wiring and facilitate the wiring by not wiring high voltage lines for power transmission.

The power supply device of the electrostatic precipitator of the present invention is installed in the control room for controlling the driving of each unit of the electrostatic precipitator, and the rectifier and the control unit for controlling the drive of the dust collector and rectified by receiving commercial power by a general wire Rectification and control device including a display unit for monitoring the operation state of the dust collector; Connection forming the commutation and control unit and electrically connected; A high frequency oscillator for converting the low frequency low voltage rectified by the rectification and control device into high frequency ; Pressure increasing a high-frequency transformer and a high-frequency high voltage to the back pressure to the low-voltage high-frequency oscillation at a high frequency oscillation with a high frequency high voltage to a higher voltage and is configured to include a voltage doubler unit is ionizing device is coupled.

Dust collector, dust collector, power supply, high voltage, back pressure, transformer

Description

Power supply of electric dust collector {The high voltage power supply for electric dust collector}             

1 is a block diagram of a power supply device of an electrostatic precipitator according to the present invention,

2 is a configuration diagram showing an example of a power supply device of the electrostatic precipitator according to the present invention,

3 is a configuration diagram of an example of an electrostatic precipitator having a power supply device according to the present invention,

4 is a configuration diagram showing an example of an electrostatic precipitator having a conventional power supply means.

* Explanation of symbols for main parts of the drawings

10: commercial power 20: control room 21: rectification and control device

21a: rectifier 21b: adjuster 21c: display

30: dust collector 31: power supply 31a: connection

31b: high frequency oscillator 31c: high frequency transformer 31d: voltage distribution device

31e: anti-distortion ring 31f: insulator 32: ionizing device

The present invention relates to a power supply device for an electrostatic precipitator, and more particularly, by constructing a high voltage device such as a high frequency transformer and a voltage distribution device into the dust collector of the electrostatic precipitator to supply commercial power directly to the dust collector. The present invention relates to a power supply device of an electrostatic precipitator, which can prevent the worker from being exposed to an electric shock accident by deteriorating workability which may occur when using a high voltage power transmission line by not wiring a transmission power transmission line.

As shown in FIG. 4, the conventional electrostatic precipitator transfers the high voltage output from the high voltage transformer 1 for boosting the general commercial frequency (60 Hz) to a high voltage to the power supply device 2a of the dust collector 2 through a thick power transmission line. After supplying and converting to high frequency, it is transmitted to the ionizer 2c and ultimately generates ions so that dust and the like can be collected on the dust collecting plate formed in the ionizer.

However, the power supply device of such a conventional electrostatic precipitator should use a thick power transmission line for high voltage to supply power from the high voltage transformer 1 provided outside the electrostatic precipitator to the dust collector as described above. As well as a lot of difficulties, there was a problem that the operator is electric shock by the high voltage flowing through the power transmission line after construction.

Therefore, a protective means for protecting such a transmission line and protecting a worker from high voltage of the transmission line has to be provided, and since the protection means is exposed to the outside, the worker has a lot of inconvenience in working.

Here, reference numeral 3 is a cyclone dust collector, 4 is a collecting device, and 5 is a blower.

The present invention has been made to solve the problems of the prior art as described above, it is not necessary to wire a large-capacity transmission line by supplying commercial power directly to the dust collector of the electrostatic precipitator and workability by the wired transmission line The purpose is to provide a power supply for the electrostatic precipitator to reduce the fall and to prevent the electric shock of the operator by the high-voltage transmission line.

In the power supply device of the present invention for achieving the above object, in the power supply device of the electrostatic precipitator which converts the voltage supplied from the commercial power supply of the low frequency low voltage state to a high voltage to supply to the ionizing device configured in the dust collector, the electrostatic precipitator It is installed inside the control room to control the driving of each part of the unit, and includes a rectifying unit for rectifying by receiving commercial power by a general electric wire, an adjusting unit for controlling the driving of the dust collector and a display unit for monitoring the operation state of the dust collector. Rectification and control system ; Connection forming the commutation and control unit and electrically connected; A high frequency oscillator for converting the low frequency low voltage rectified by the rectification and control device into a high frequency low voltage; Characterized in that the booster is configured to a high-frequency transformer and a high-frequency high voltage to the back pressure to the low-voltage high-frequency oscillation at a high frequency oscillation with a high frequency high voltage to a higher voltage and including a voltage doubler unit for connecting the ionizing device and electrically.

Hereinafter, described in detail with reference to the accompanying drawings of the present invention.

1 is a block diagram of a power supply device of the electrostatic precipitator according to the present invention, Figure 2 is a block diagram showing an example of a power supply device of the electrostatic precipitator according to the present invention, Figure 3 is a power supply device according to the present invention It is a block diagram of an example of an electrostatic precipitator having a.

As shown, the power supply device 31 of the electrostatic precipitator according to the present invention is installed inside the dust precipitator 30.

In addition, the present invention includes a rectification and control device 21 for rectifying and controlling the low frequency low voltage of the general commercial frequency (60 Hz), the rectification and control device 21 is a separate space from the power supply device 31 It may be installed in the control room 20.

The power supply 31 includes a connecting portion 31a as a means for connecting so that the low voltage supplied through the rectification and control device 21 can be supplied to a subsequent electric device, and converts the low frequency low voltage into high frequency. High voltage transformer 31c for converting the low voltage high frequency oscillated by the high frequency oscillator 31b and the high frequency oscillator 31b into a high voltage high frequency and a high voltage high voltage converted by the high frequency transformer 31c to a higher high voltage. It comprises a device 31d.

As described above, the connection part 31a converts a low voltage supplied through a general wire connected to the rectification and control device 21 into a high frequency of an appropriate frequency and supplies the converted high frequency low voltage to the high frequency oscillator 31b. It is for making it easy to connect the electric wire connected to the said rectification and control apparatus 21 as a means. For example, the connection portion 3a may be in the form of a connector exposed to the outside of the dust collector 30. That is, an outlet is installed at the connection portion 31a, and a plug is installed at an end of the wire connected to the rectification and control device 21, so that the wiring is made only by separating or combining the plug.

In addition, the rectification and control device 21 is installed inside the control chamber 20 as described above to isolate from the dust collecting device 30, from the high voltage generated when driving the high voltage devices configured in the dust collecting device 30 To protect workers.

As shown in FIG. 1, the rectification and control device 21 regulates the rectifier 21a for rectifying and stabilizing the low voltage supplied from the commercial power supply 10 and the power supplied to the power supply device 31. At the same time, it comprises a control unit 21b for transmitting control signals to each part of the electrostatic precipitator and a display unit 21c for displaying the driving state of the dust collector 30 including the power supply device.

The structure of the rectifying unit 21a is generally similar to the existing rectifying means for rectifying electricity, and a detailed description thereof will be omitted.

The adjusting unit 21b includes various buttons, dials, and the like for controlling the driving time of the dust collector 30 and the degree of ionization of the ionizer constituting the dust collector.

The display unit 21c may be a CRT, a liquid crystal display, or the like, which is typically used in a computing device. The high frequency oscillator 31b, the high frequency transformer 31c, and the double voltage device 31d constituting the power supply device 31 may be used. ) Or the discharge state in the dust collector 30 is displayed.

In order to reduce the size of the voltage distribution device and to increase the discharge resistance, the voltage distribution device 31d was filled with insulating oil, an insulating gas, and the like. As shown in FIG. ) Is fixedly installed.

The insulating oil stored in the above-mentioned voltage distribution device 31d includes mineral oil obtained by sorting and purifying petroleum-based crude oil with little impurities, excellent electrical insulation, chemically stable, and not oxidatively deteriorated. As the synthetic insulating oil, any one of lead-based, paraffinic-aromatic hydrocarbons, main oils, alkylbenzenes, polybutenes, polychlorinated biphenyls (PCBs), alkylnaphthalenes, alkyldiphenylethanes and silicone oils can be used. However, it is preferable to use silicone oil in consideration of environmental pollution or thermal stability.

Sulfur fluoride (SF ₆ ) is used as the insulating gas.

In addition, the high-frequency transformer 31c and the voltage distribution device 31d are installed inside the cylindrical insulator 31f to increase insulation, and more preferably, a material having high resistance in the insulator 31f. The electrical potential is increased due to the accumulation of electric charges on the inner surface of the insulator 31f to prevent the electric field from being distorted and the insulation partially broken.

In order to prevent the discharge due to distortion of the magnetic field due to the accumulation of charges in the high voltage generating device by distributing the high voltage in an equal electric field around the double voltage device 31d, the ring-shaped distortion prevention The ring 31e was installed.

The anti-distortion ring 31e is made of a copper tube of about 6mm to make a ring shape to join the connection portion and connect the electric wire to the junction to connect where the constant voltage is distributed to each back pressure terminal of the back pressure rectification diode.

The voltage distribution device 31d may use a voltage multiplication circuit of Walton, but this may be variously modified as an example.

While the invention has been shown and described in connection with specific embodiments above, it will be appreciated that the invention can be variously modified and varied without departing from the spirit or scope of the invention as set forth in the claims below. It will be apparent to those skilled in the art that the invention can be easily understood.

As described above in detail, the electrostatic precipitator having the electric supply device according to the present invention can isolate the high voltage devices from the user or operator by installing the high voltage devices generating high voltage inside the dust collector of the electrostatic precipitator. By isolating them from the worker, it is possible to prevent the worker from being electrocuted by the high voltage device.

In addition, by installing high voltage devices inside the dust collector, rectifying the commercial power supply with a predetermined rectifying means, and then directly supplying the dust collector to the dust collector. It can be configured to reduce the cost of wiring, as well as do not have to be a safety device according to the wiring of the high-voltage cable, thereby the operator can work freely without being bound by the safety device.

Claims (6)

delete delete delete delete In the power supply of the electrostatic precipitator for converting the commercial power supplied in a low frequency low voltage state to a high frequency high voltage to supply to the ionizer of the dust collector, (A) It is installed in the control room that controls the operation of each unit, and rectifies the commercial power supply of low frequency low voltage state supplied by the general electric wire, the control unit for controlling the operation of the dust collector and the operating state of the dust collector Rectification and control device including a display unit ; (B) a connection portion electrically connected to the rectification and control device; (C) a high frequency oscillation unit connected to the rectification and control device through the connection unit, the low frequency low voltage rectified through the rectification and control device is converted into a high frequency low voltage; (D) a high frequency transformer in which the high frequency low voltage converted by the high frequency oscillator is backed up to high frequency high voltage; (E) the voltage doubler unit is further pressure increase in the high-frequency-converted high-frequency high voltage transformer is electrically connected to the ionization device and prevent distortion the discharge ring to prevent a discharge caused by the distortion of the electric field is provided on the outside; Power supply of the electrostatic precipitator, characterized in that comprises a. The method of claim 5, The high frequency transformer and the voltage distribution device are inserted into the dust collector in a state where all of the insulators having a cylindrical shape are inserted, and an insulating oil or an insulating gas is installed in the interior of the voltage distribution device to increase discharge resistance. Power supply of the electrostatic precipitator.

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