CN2201988Y

CN2201988Y - Electric supply for static dust collector by high frequency quasi-square wave

Info

Publication number: CN2201988Y
Application number: CN 94238101
Authority: CN
Inventors: 庄仕捷
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-25
Filing date: 1994-08-25
Publication date: 1995-06-28
Anticipated expiration: 2004-08-25

Abstract

The utility model relates to an electric supply for static dust collector by high frequency quasi-square wave, which is respectively sent to an oscillate signal generator and an oscillate signal controller by a power supply and can be respectively sent to a power amplifier, a voltage doubler booster and a protective circuit by the oscillate signal generator. The high frequency quasi-square wave generated form the oscillate signal generator circuit can increase the availability of the power of the static electricity deduster and reduce the electricity consumption, and the dedust efficiency is higher than traditional power supplies. Under the same condition, the operation voltage and the discharge inception voltage are low, the requirement to electric field insulated devices is low, and therefore, the operation is more reliable.

Description

Electric supply for static dust collector by high frequency quasi-square wave

The utility model belongs to a kind of high frequency quasi-square wave electrostatic precipitator power supply of environmental protection equipment.

At present, adopt the electrostatic precipitator power supply both at home and abroad, producing the high-tension current waveform is partly to sinusoidal wave and straight ripple; Half to exist the utilization rate of power supply to sinusoidal wave dc source lower; Straight dc source efficiency of dust collection is lower, mainly be that most electric current below impulse waveform is lower than discharge inception voltage can not make dust charged, therefore, it does not have the dedusting effect, and the crest of pulse partly is easy to make air breakdown, forms the short circuit phenomenon of high-tension current.

The purpose of this utility model is to avoid above-described weak point and provides a kind of existing impulse waveform to the driving fast into of dust, has the high frequency quasi-square wave electrostatic precipitator power supply of the higher high voltage source utilization rate of straight waveform again.

The utility model is finished by following approach:

This electrostatic precipitator power supply is to be sent to oscillation signal generator (II) and vibration signal controller (VI) respectively by power supply (I), and oscillation signal generator (II) passes through resistance R ₆Link to each other with power amplifier (III), and by transformer B ₄Power amplifier is linked to each other with multiplication of voltage stepup transformer (IV), pass to holding circuit (V) at last; Vibration signal controller (VI) control vibrator (VII); Vibration signal controller (VI) is also controlled rapping signal controller (VIII) and vibrator (IX) simultaneously; Finished high frequency quasi-square wave electrostatic precipitator power supply overall process by three steps.

Fig. 1 is the utility model block diagram

Fig. 2 is the utility model electrical schematic diagram

Fig. 3 is the utility model control section structural representation

Fig. 4 is the utility model fuel tank front view that boosts

Fig. 5 is the utility model fuel tank A-A cutaway view that boosts

The utility model will be further described in conjunction with the accompanying drawings:

The circuit part components and parts divide in five layers of pack into host computer control cabinet and transformation fuel tank, wherein: main transformer (2), start-up control contactor (1) and main power source rectifier filter (3) are loaded on ground floor; Rapping o controller (4) is loaded on the second layer, and vibration o controller (5) is loaded on the 3rd layer, and power transistor and radiator thereof (6) are loaded on the 4th layer; Rapping signal generating circuit plate (7), high frequency quasi-square wave signal generator circuit plate (8) and power transformer (9) thereof are loaded on layer 5; Meter lamp and switch (10), regulator (11) etc. are loaded on the layer 5 right opposite, and high-tension transformer (12), silicon stack (13), choke coil (14), high-voltage sampling resistance (15), electric capacity (16) are loaded in the fuel tank; Fuel tank is connected by cable with switch board, output in the high pressure output cable connected tank, and be fixed on the tank cover.

The explanation of electricity principle:

1, AC power is through insurance BX ₁And K switch ₁Insert rapping and vibration piezoelectric transformer B ₁With total power light ZD ₁, work as K ₁Connect back ZD ₁Bright, B ₁Add voltage, secondary voltage is through D ₁-D ₄Rectification is after C ₆Filtering, and be sent to R simultaneously ₆And LED ₃The rapping power indicating circuit of forming.This group power supply is through IC ₂Be sent to IC after the voltage stabilizing simultaneously ₁, IC ₃, IC ₄And oscillation signal generator circuit, oscillation control signal generator circuit and the rapping signal controller generator circuit formed of outer ring circuit separately.Oscillation signal generator is by IC ₁, R ₃, R ₄, R ₅, R ^*, D ₉, D ₁₀, C ₄, C ₅Deng composition, it is responsible for producing high frequency quasi-square wave signal and is sent to post-amplifier and boosts.The oscillation control signal generator is by IC ₃, R ₉, R ₁₀, R ₁₁, R ₂, W ₂, W ₃, D ₁₁, D ₁₂, D ₁₃, C ₈, C ₉, J ₂, AN ₂, LED ₄Form, be responsible for regularly output (time is adjustable) vibration signal and provide indication, with control CJ ₂Action (being the action of plate vibrator).Rapping control signal circuit is by IC ₄, R ₁₃, R ₁₄, R ₁₅, R ₁₆, W ₄, D ₁₄, D ₁₅, D ₁₆, LED ₅, C ₁₀, AN ₃Form, responsible timing is exported the rapping control signal and is provided indication, with control CJ ₃Action (being the action of plate vibrator or electromagnet).

2, power supply flows into B ₁And IC ₁In time, also flow to by CJ _1-1, TN, CJ _1-2, AN ₁, CJ ₁Coil, J _4-1Normally closed point, CJ _1-3And ZD ₂The self-locking of forming starts holding circuit, works as AN ₁Closed back is by CJ _1-2Finish the self-locking power supply through CJ _1-1, CJ _1-3Continue to flow to ZD ₂And C ₁And B ₂, ZD ₂Whether indication starts C ₁Absorption is from the transient state saltus step of circuit, B ₂Be the power supply main transformer, its secondary through step-down after D ₅To D ₈Rectification and C ₃After the filtering, electric current is through BX ₂And BX ₂Fusing indication R ₂And LED ₂, flow to high-tension transformer B again ₄The primary center tap, work as IC ₁The high frequency quasi-square wave signal that produces is through R ₆Current limliting and W ₁Pressure regulation promotes by BG ₁And B ₃The inverting amplifier of forming, this signal promotes through paraphase with after amplifying, by BG ₂, BG ₃And B ₄The power amplification booster circuit of forming, voltage is through B ₄Amplify, after again through C ₁₄To C ₁₉And D ₂₁To D ₂₆The multiplication of voltage of forming is boosted into high pressure, through ZQ, mA, J ₁Be sent to high voltage electric field, in order to dedusting, the mA table shows the electric current of output, J ₁Be current limliting and short-circuit protection relay, when load short circuits or electric current are excessive, J ₁Action drives J ₄Thereby, make J _4-1Normally closed point disconnects and makes CJ ₁Discharge, thereby turn-off high voltage source, reach the purpose of holding circuit.Form the high-pressure sampling circuit by R and KV table and show output voltage.

The utility model major advantage:

1, utilize high frequency quasi-square wave technology, make the power utilization rate higher, power consumption is lower, stable and reliable operation, and the automaticity height, convenient operation is safeguarded, and is higher than the efficiency of dust collection of conventional power source.

2, working voltage is low under the equal conditions, and discharge inception voltage is low, and the electric field insulating device requires lower, and therefore operation is more reliable;

3, the security performance of complete machine is superior, carries out full-shield.

Claims

1, a kind of high frequency quasi-square wave electrostatic precipitator power supply, it comprises power supply (I), holding circuit (V), vibration signal controller (VI), vibrator (VII), rapping signal controller (VIII), vibrator (IX), it is characterized in that power supply (I) is sent to oscillation signal generator (II) and vibration signal controller (VI) respectively; Oscillation signal generator (II) passes through resistance R with power amplifier (III) ₆Connect, by transformer B ₄Power amplifier (III) is connected with multiplication of voltage stepup transformer (IV);

2, high frequency quasi-square wave electrostatic precipitator power supply according to claim 1 is characterized in that oscillation signal generator is by IC ₁, R ₃, R ₄, R ₅, R ^*, D ₉, D ₁₀, C ₅Constitute, it is responsible for producing high frequency quasi-square wave signal and is sent to post-amplifier and boosts.

3, high frequency quasi-square wave electrostatic precipitator power supply according to claim 1 is characterized in that by IC ₁The high frequency quasi-square wave signal that produces is through resistance R ₆Current limliting and W ₁Pressure regulation promotes by BG ₁And B ₃The inverting amplifier of forming, signal promotes through paraphase with after amplifying, by BG ₂, BG ₃And B ₄The power amplification booster circuit of forming, voltage is through B ₄After the amplification again through C ₁₄To C ₁₉And D ₂₁To C ₂₆The multiplication of voltage of forming is boosted into high pressure.