CN2209406Y

CN2209406Y - Main frequency electrostatic high-voltage generator

Info

Publication number: CN2209406Y
Application number: CN 93247404
Authority: CN
Inventors: 吴祥华
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-05
Filing date: 1993-12-05
Publication date: 1995-10-04
Anticipated expiration: 2003-12-05

Abstract

The utility model relates to a main frequency electrostatic high-voltage generator, which is mainly composed of a pulsed oscillation module, a pulse step-up transformer and a voltage doubler rectifier circuit. The pulsed oscillation module is composed of a sample comparator, two diodes, a thyristor and a capacitor. The main frequency electrostatic high-voltage generator directly forms interstice high frequency damped oscillation pulse under power frequency voltage, increases voltage through the pulse step-up transformer, and charges the voltage doubler rectifier circuit with dual voltage. The utility model can overcome 'FARADAY corner effect ' in electrostatic painting, can guarantee the corners and inner space of painting elements having good coating layers, and has the advantages of simple structure, low cost, small size, convenient repair and use, long service life, etc.

Description

Main frequency electrostatic high-voltage generator

The utility model is a kind of electrostatic high-pressure generator.

The kind of current electrostatic high-pressure generator is more, and specification is different, can be used among the different fields.The electrostatic high-pressure generator that in electrostatic precipitation and electrostatic spraying industry, uses, general power requirement is relatively large, high pressure requirement is about 50kV～100kV, and the electrostatic high-pressure equipment that uses at aspects such as electrostatic therapeutic, sterilization, air cleanings, then power requirement is less.These electrostatic high-pressure generators, usually all by the such conversion process of interchange → direct current → interchange → high pressure: promptly form by step-down transformer, rectification, filtering, pressurizer, oscillator, controller, amplifier, step-up transformer, voltage-multiplying circuit, this electrostatic high-pressure generator circuit structure complexity, follow the method that general instrument is made, so cost height, volume are big, use maintenance to bother.

The purpose of this utility model: for overcoming the deficiency that high pressure generator that above-mentioned conventional manufacture method makes exists, a kind of removal power step-down transformer, rectification, filtering and conventional structure forms such as independent vibration, amplifying circuit are provided, change the electrostatic high-pressure generator that directly forms the gap higher-order of oscillation by power frequency, have simple in structurely simultaneously, volume is little, the low characteristics of cost.

The technical solution of the utility model is to be provided with sampling comparator, two the impulse hunting modules that diode, thyristor, electric capacity are formed that are made of electric capacity and resistance series connection in the step-up transformer front, sampling comparator two ends are the mains electricity input end, it is in parallel after diode, thyristor, diode are connected successively with the sampling comparator, one end of electric capacity connects the link of first diode and thyristor, behind the current output terminal of middle the output connection thyristor of sampling comparator, be connected the input of pulse booster transformer respectively with the other end of electric capacity.

The utility model is directly to form gap higher-order of oscillation pulse under power-frequency voltage, pass through pulse booster transformer, charging forms electrostatic high-pressure to voltage doubling rectifing circuit, because of after having removed power transformer, rectification, filter circuit, separate oscillators, amplifier, make equipment have more advantages such as simple in structure, that cost is low, volume is little, use is easy to maintenance simultaneously.

In conjunction with the accompanying drawings the utility model is elaborated.

Accompanying drawing 1 is a circuit diagram of the present utility model.

Embodiment: the contrast accompanying drawing, the utility model mainly is made up of impulse hunting module 1, step-up transformer 2, voltage doubling rectifing circuit 3.Impulse hunting module 1 is by sampling comparator 5, diode D ₆, D ₇, thyristor D ₈, capacitor C ₉Form, as shown in Figure 1a.Capacitor C ₉Also can be connected sampling comparator 5 and thyristor D ₈Connection end point and the input of pulse transformer 2 between shown in Fig. 1 b.Sampling comparator 5 is made of resistance R and capacitor C, or an adjustable resistor.Its ends A, B are the mains electricity input end.Thyristor D ₈Can replace with a triode.At sampling comparator 5 and diode D ₆Link and mains electricity input end B between, it is the silicon-controlled voltage regulation device 4 of AP86KTS that specifications and models of being produced by Hangzhou swan goose electronics corporation can be set, in order to the size of the impulse hunting electric current of regulating impulse oscillation module 1 output, to reach adjusting to electrostatic high-pressure output.At diode D ₇And capacitor C ₉Link and thyristor D ₈Between, can be provided with one and have protection thyristor D ₈The diode D of function ₁₀The input of pulse booster transformer 2 also can be connected diode D ₇And capacitor C ₉Connection end point and thyristor D ₈Between, and two outputs of former connected impulse hunting module 1 are connected to each other.As being provided with diode D herein ₁₀, the input of pulse booster transformer 2 also can be connected on the end of diode D10, and two outputs with former connected impulse hunting module 1 are connected to each other again, shown in Fig. 1 c, Fig. 1 d.

Operation principle of the present utility model: after input A, the B of impulse hunting module 1 connects civil power, as diode D ₆When being in power frequency negative half period electronegative potential, thyristor D ₈Do not reach the condition of opening the door and closing, no current passes through, and becomes the gap of pulse, this moment diode D ₇It is open-minded to be in high potential, through the intermediate ends and the power supply negative terminal formation capacitor C of sample circuit 5 ₉The charging energy storage.Sample circuit 5 is along with the variation of power input voltage phase place, and the paraphase of gained sampling voltage polarity is as diode D ₇Be in instead partially the time, it is closed immediately, this moment diode D ₆Be in the forward high potential, on sample circuit 5 along with the rising of sampling voltage, diode D ₆Conducting triggers thyristor D ₈Reach the condition of opening the door, at this moment capacitor C ₉To the pulse booster transformer 2 elementary power conversion of carrying out, under the effect of reactance, the elementary generation of pulse transformer discharges and recharges the high pressure that causes, with doing the attenuation type vibration discharge time, make the certain sub-high pressure of secondary generation of pulse transformer 2, voltage doubling rectifing circuit 3 is carried out discharging and recharging of cycle internal clearance higher-order of oscillation electric current.Discharge and recharge so repeatedly, make voltage doubling rectifing circuit 3 output electrostatic high-pressures, regulate input A, B two ends supply voltage size, can obtain adjustable charging and discharging currents, reach adjustable electrostatic high-pressure.

Claims

1, a kind of power frequency formula electrostatic high-pressure generator comprises pulse booster transformer [2], voltage-multiplying circuit [3], it is characterized in that being provided with in pulse booster transformer [2] front sampling comparator [5], a diode [D who is made of capacitor C and resistance R series connection ₆], thyristor [D ₈], diode [D ₇], electric capacity [C ₉], the impulse hunting module [1] formed, the two ends [A, B] of sampling comparator [5] are the mains electricity input end, diode [D ₆], thyristor [D ₈], diode [D ₇] be connected thyristor [D with the middle output of sampling comparator [5] after the series connection successively ₈] current output terminal after, and electric capacity [C ₉] the other end connect the input of pulse booster transformer [2] respectively.

2, power frequency formula electrostatic high-pressure generator according to claim 1 is characterized in that electric capacity ［ C ₉Also can be connected sampling comparator ［ 5 ］ and thyristor ［ D ₈Connection end point, and the input of pulse booster transformer ［ 2 ］ between.

3, power frequency formula electrostatic high-pressure generator according to claim 1 is characterized in that at sampling comparator ［ 5 ］ and diode ［ D ₆Link and input ［ B ］ between, a silicon-controlled voltage regulation device ［ 4 ］ can be set.

4, according to claim 1 or 2 or 3 described power frequency formula electrostatic high-pressure generators, it is characterized in that at diode ［ D ₇And electric capacity ［ C ₉Link and thyristor ［ D ₈Between, a diode ［ D with defencive function can be set ₁₀.

5, according to claim 1 or 2 or 3 described power frequency formula electrostatic high-pressure generators, it is characterized in that the input of pulse booster transformer ［ 2 ］, also can be connected diode ［ D ₇And electric capacity ［ C ₉Connection end point and thyristor ［ D ₈Between, and former connected two ends are connected to each other.

6, power frequency formula electrostatic high-pressure generator according to claim 4 is characterized in that the input of pulse booster transformer ［ 2 ］ also can being connected on diode ［ D ₁₀An end, and former connected two ends are connected to each other.