CN200981020Y - Energy-saving type electric dust-cleaning apparatus high-frequency pulse power controlling device - Google Patents
Energy-saving type electric dust-cleaning apparatus high-frequency pulse power controlling device Download PDFInfo
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- CN200981020Y CN200981020Y CN 200620125078 CN200620125078U CN200981020Y CN 200981020 Y CN200981020 Y CN 200981020Y CN 200620125078 CN200620125078 CN 200620125078 CN 200620125078 U CN200620125078 U CN 200620125078U CN 200981020 Y CN200981020 Y CN 200981020Y
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Abstract
The utility model relates to a power saving electric precipitator using high-frequency impulsing power source and controlling device, which comprises an electric precipitator, a high-frequency impulsing transformer, a high-frequency inversion circuit, an amplitude modulation circuit, a triphasic rectifier filter circuit, and a multi-CPU controlling unit. The electric precipitator, the high-frequency impulsing transformer, the high-frequency inversion circuit, the amplitude modulation circuit and the triphasic rectifier filter circuit are connected consecutively. The utility model makes best use of the capacity characteristic of the electric precipitator and the inductance characteristic of the high-frequency transformer, and is capable of regularly providing the electric precipitator high power electric source and low power electric source under the control of the multi-CPU controlling unit.
Description
Technical field
The utility model relates to a kind of device, and the utility model relates to a kind of energy-saving electric cleaner high frequency pulse power supply and control device more precisely.
Background technology
The optimum operation of electric cleaner need be set up high as far as possible field intensity and satisfy the charged and needed suitable current of autophage of flue dust for electric field.
Adopting power frequency supply and control device for the operation of electric cleaner provides power supply, is in the single-phase 380V power supply feeder with electrical network, changes supply voltage by changing the silicon controlled angle of flow, promptly realizes pressure regulation by phase modulation.This power frequency voltage controller power source send that Industrial Frequency Transformer boosts, rectification, for electric cleaner provides negative high voltage dc pulse power supply.Usually,, often make great efforts to increase the angle of flow in the device,, promptly improve the field intensity of electric cleaner internal electric field to improve working voltage in order to improve the efficiency of dust collection of electric cleaner.But increase along with the angle of flow, when improving voltage, also will increase electric current, and the slope that the slope ratio voltage that electric current increases increases is much bigger, when the angle of flow is increased to some values, electric current is non-linear increase, considerably beyond the charged needed electric current of flue dust, therefore, though for electric field provides certain field intensity, also can improve the efficiency of dust collection of electric cleaner operation, but simultaneously except that a spot of electric current be used for the flue gas dust charged, a large amount of electric currents is wasted with the form of luminous energy and heat energy.
Adopting high frequency switch power and control device for the operation of electric cleaner provides power supply, is with in the electrical network three-phase 380V power supply feeder, obtains high frequency electric source through rectifying and wave-filtering, inversion, promptly realizes pressure regulation by frequency modulation.This high frequency electric source send that high frequency transformer boosts, rectification, for electric cleaner provides negative high voltage dc pulse power supply.Though the field intensity that this device provides for electric cleaner is more much higher than power frequency supply device, for the efficiency of dust collection that further improves electric cleaner, satisfy the requirement of new environmental protection about dust emission standard, made contribution, but compare with conventional power supply, also only improved efficiency of dust collection, do not reduce the consumption of electric cleaner operation electric energy, have the phenomenon of a large amount of wastes of electric energy equally.Especially when electric cleaner during, often by the supply frequency in the modifier or recently adjust the amplitude of voltage by the duty that changes power supply wave shape because of its dielectric voltage withstand material aging.The body of the electric cleaner that the former is matched restricts, the latter is restricted by the adaptability of high frequency transformer, thus can only adjust the amplitude of power supply among a small circle, and can't allow power supply play one's part to the full, both cause a large amount of wastes of electric energy, influenced the security of equipment operation again.
Electric cleaner is a big capacitance body, is a big inductance for electric cleaner provides the transformer of high voltage source, so they have energy storage characteristic; But they also are equivalent resistances simultaneously, have energy dissipation behavior.In the power consumption process, will produce heat energy, this heat energy has the side effect that changes capacitance characteristic, and along with the increase of heat energy, will make the withstand voltage properties of electric capacity reduce, and working voltage will reduce under the constant condition of the silicon controlled angle of flow this moment.Otherwise, make full use of this energy storage characteristic, not only improve the efficiency of dust collection of electric cleaner, and avoided waste of electric energy.High frequency pulse power supply and control device are just according to these characteristics, and it is energy-conservation to adopt energy-saving modulation circuit to realize.Higher because of its frequency, the energy of single waveform is little, has and high frequency switch power device same effect, promptly compare, can improve the efficiency of dust collection of electric cleaner with power frequency supply, but simultaneously different with high frequency switch power again, the amplitude of high frequency electric source waveform is more flexible, so can be energy-conservation significantly.
Summary of the invention
The purpose of this utility model is at above-mentioned the deficiencies in the prior art, and a kind of scope that can adjust supply voltage significantly is provided, and under the prerequisite that satisfies electric cleaner operating condition needs, can improve the efficiency of dust collection of electric cleaner; Can reduce the operation power consumption of electric cleaner again; Dielectric voltage withstand in the electric cleaner there are the parts of requirement, the energy-saving electric cleaner high frequency pulse power supply and the control device that can also prolong its service life.
To achieve these goals, the utility model is to take following technical scheme to realize:
Energy-saving electric cleaner high-frequency electrical pulses source control device comprises electric cleaner, it is characterized in that it also comprises high-frequency pulse transformer, high-frequency inverter circuit, modulation circuit, three phase rectifier filter circuit and many CPU control module; Described electric cleaner, high-frequency pulse transformer, high-frequency inverter circuit, modulation circuit and three phase rectifier filter circuit are connected successively, and high-frequency inverter circuit, modulation circuit and three phase rectifier filter circuit and many CPU control module interconnect.
Energy-saving electric cleaner high-frequency electrical pulses source control device its concrete theory diagram such as Fig. 1.Electrical network three-phase 380V wherein, behind the 50Hz power supply feeder, at first carry out rectifying and wave-filtering through the three phase rectifier filter circuit, obtain the DC voltage of 540V, by structure model selection and the operating condition of energy-saving modulation circuit according to electric cleaner, carry out the PWM amplitude modulation of high-energy and low-yield power supply respectively, be met the high and low energy power supply that the electric cleaner operation needs, carry out inversion for high-frequency inverter circuit, obtain the high frequency alternating signal carrying device.This signal inserts the elementary of high-frequency pulse transformer, boost, after the rectification, for electric cleaner provides peak-peak can be up to the negative dc pulse power supply of 200kV.
Energy-saving modulation circuit design is between current rectifying and wave filtering circuit and high-frequency inverter circuit.This energy-saving modulation circuit is seen Fig. 2, and totally three IGBT devices and inductance, capacitor filter compose in parallel by the two-stage electronic switching circuit for it.The one-level electronic switching circuit is made of an IGBT (T1) device, is used for input voltage is adjusted among a small circle, for electric cleaner provides the high-energy power supply; Another grade electronic switching circuit is made of two IGBT (T2, T3) device and inductance (L), electric capacity (C) filter circuit, is used for input voltage is adjusted on a large scale, for electric cleaner provides low-yield power supply.Two-stage circuit cooperatively interacts under the control of many CPU software, realizes adjusting flexibly on a large scale of supply unit output voltage.
First order circuit is an IGBT (T1) only, the output of its input termination current rectifying and wave filtering circuit; The input of its output termination high-frequency inverter circuit; Its control end is controlled by many CPU control module.The input of an IGBT (T2) of second level circuit connects the output of current rectifying and wave filtering circuit; One end of output tandem electric inductance element (L), the other end of inductance element (L) removes the input as another IGBT (T3), goes back and connect an electric capacity (C) to ground; The output of another IGBT (T3) connects the input of high-frequency inverter circuit.
Electrical network three-phase 380V, 50Hz power supply, be applied to the current rectifying and wave filtering circuit of device after, obtain the DC voltage of 540V, as the input of modulation circuit.When the electric cleaner operation needs the high-energy power supply, first order circuit T1 work, second level circuit T2, T3 close; When the electric cleaner operation needed low-yield power supply, first order circuit T1 closed, second level circuit T2, T3 work.When line voltage was higher than 380V, T1 was operated under the PWM modulation condition, and when providing the high-energy power supply for the electric cleaner operation, its output voltage remains on about 540V; When line voltage was lower than 380V, T1 was operated under the level state, when providing the high-energy power supply for the electric cleaner operation, fed back the under-voltage information of electrical network to subsequent conditioning circuit, was regulated being remedied among a small circle by frequency according to under-voltage difference by subsequent conditioning circuit.T2, T3 are operated under the PWM modulation condition, according to the actual needs of electric cleaner operation, adjust the modulating frequency of PWM in real time, for the electric cleaner operation provides low-yield power supply.The output area of T1 is 540V (± 10%), and the output of T2, T3 is in 0～540V (10%) scope, and two-stage circuit cooperatively interacts, and can realize the stepless pressure regulation of electric cleaner working voltage.
The work wave of this circuit as shown in Figure 3.U1Z is the DC voltage of rectification output, UF2 is the high-energy DC voltage of T1 output, UF1 is the low-yield DC voltage of T2, T3 output, and change along with the needs of electric cleaner operation, be UF1 with the amplitude of UF2 than real time altering, also change between the dutycycle t2 of its high and low energy and the t1 along with the needs of electric cleaner operation.
Because energy-saving modulation circuit is used for electric cleaner high frequency pulse power supply and control device, so can be according to the ash composition after used coal of form, the boiler combustion of electric cleaner internal structure, boiler and the burning, the various operating conditions such as height of generator load, make full use of the capacitance characteristic of electric cleaner and the inductance characteristic of high frequency transformer, under the control of many CPU control module, provide high-energy power supply and low-yield power supply for electric cleaner regularly.When providing the high-energy power supply for electric cleaner, in electric cleaner, set up on the one hand electric field, dust in flue gas is carried out charged and satisfied autophage; On the other hand capacitance body is charged, unnecessary electric charge is stored in the capacitance body.When providing low-yield power supply for electric cleaner, utilize the electric field of having set up on the one hand, carry out charged to dust in flue gas; Replenish because of electric cleaner has the used up electric field energy of resistance characteristic on the other hand, continue to keep the intensity of electric field.High-octane power supply can be set up higher field intensity for electric cleaner, makes dust in flue gas charged rapidly, improves efficiency of dust collection; Low-energy power supply can be used as catabiotic the replenishing to energy storage device institute in running, under the prerequisite that satisfies the required electric energy of electric cleaner optimum operation, realizes energy-conservation.
Description of drawings:
Fig. 1 is the electric theory diagram that the utility model is applied to install in the electric cleaner;
Fig. 2 is the circuit diagram of energy-saving modulation circuit in the utility model;
Fig. 3 is the working waveform figure of energy-saving modulation circuit in the utility model;
Fig. 4 is the circuit structure diagram that the utility model is applied to install in the electric cleaner;
Fig. 5 is the working waveform figure that the utility model is applied to install in the electric cleaner.
The specific embodiment
When adopting this energy-saving electric cleaner high-frequency electrical pulses source control device (see figure 4), when providing power supply for electric cleaner, the operation characteristic of electric cleaner will be changed, by the high frequency switch power of realizing pressure regulation among a small circle by frequency modulation, develop into the high frequency pulse power supply of realizing pressure regulation on a large scale by energy-saving modulation circuit, under many CPU controls, both provided the high-energy power supply for the electric cleaner operation, for the electric cleaner operating condition is set up stronger electric field, to improve the efficiency of dust collection of electric cleaner; For the electric cleaner operation provides low-yield power supply, make full use of the energy storage characteristic of electric capacity, inductance again, will get off with the electric energy saving that luminous energy and thermal waste are fallen; Can also prolong the service life of electric cleaner.
This device is made up of three phase rectifier filter circuit, energy-saving modulation circuit, high-frequency inverter circuit, many CPU control module etc., and its load equipment is high-frequency pulse transformer and electric cleaner.The three phase rectifier filter circuit is with electrical network 380V, the power supply of 50Hz, carry out rectifying and wave-filtering, obtain the DC voltage about 540V, for device provides enough carrying load abilities, and the high-quality power supply that ripple factor is little, this power supply is as the input of modulation circuit, and provide the height of satisfying the demand for load equipment by modulation circuit, low-energy power supply, carry out high-frequency inversion for high-frequency inverter circuit, outside the high-frequency signal carrying device that obtains, put on the elementary of high-frequency pulse transformer, secondary after boosting, carry out rectification, obtain peak value about 100kV, the negative dc pulse power supply of mean value about 72kV sent into electric cleaner inside, for setting up the charged use of electric field and flue dust.
This device is under the control of many CPU control module, and along with the variation of electric cleaner operating condition, device is always the high-energy power supply that electric cleaner provides operation to allow, and sets up high-intensity electric field, improves efficiency of dust collection to greatest extent, and its work wave is seen Fig. 5.Behind the electrical network three-phase 380V power frequency AC feeder,, obtain waveform U1Z through current rectifying and wave filtering circuit; Through energy-saving modulation circuit, obtain waveform U1F, when line voltage was higher than 380V+5%, (0～t1), its control utmost point G1 was that the PWM modulating pulse drives, otherwise G1 is that level drives for electric cleaner provides high-octane T1; According to electric cleaner operation needs, for electric cleaner provides low-energy T2, T3, the power supply amplitude of output may be the value of t1～t2 section, also may be t3～t4 value; Through high-frequency inverter circuit, obtain waveform U1; Through high-frequency pulse transformer and rectification, obtain waveform-U2, I2.From oscillogram as seen, this device and high frequency switch power and control device (only have a high-octane waveform of 0～t1 for what the electric cleaner electric field provided, and do not have t1～t2 or a low-energy waveform of t3～t4) compare, obviously the electric energy that provides for the electric cleaner electric field is wanted much less.
Energy-saving electric cleaner high frequency pulse power supply and control device are compared with power frequency supply and control device, efficiency of dust collection can improve about 40%, promptly on the basis of the efficiency of dust collection of realizing through conventional power supply, remainder is removed about 40% again, or on the basis of the soot emissions that conventional power supply reaches, further reduce soot emissions up to about 40%; Provide load equipment suitable low-yield power supply by electric cleaner simultaneously, to satisfy the electric energy that charged needed electric current of flue dust and load equipment itself are consumed, saves energy is compared with conventional power supply to greatest extent, can reduce electric cleaner operation power consumption up to more than 70%.
By the end of the year 2005, whole nation thermoelectricity installed capacity is up to 5.08 hundreds of millions kilowatts, wherein the overwhelming majority adopts electric cleaner to carry out dedusting, electric cleaner operation power consumption accounts for about 0.2% of unit capacity, calculated in 6000 hours by average annual generator operation, the annual electric energy that will be used for the electric cleaner operation is up to 6,000,000,000 kilowatt hours, and every kilowatt hour quota of expenditure coal calculates by 360 grams, annually moves used up standard coal up to 2,160,000 tons for electric cleaner! Have energy-saving electric cleaner electric supply installation if adopt,, will save standard coal every year up to 1,500,000 tons according to energy-conservation 70% calculating.
Above-mentioned example limits the utility model never in any form, and all employings are equal to the technical scheme that form obtained of replacement or equivalent transformation, all drop within the protection domain of the present utility model.
Claims (1)
1, energy-saving electric cleaner high-frequency electrical pulses source control device comprises electric cleaner, it is characterized in that it also comprises high-frequency pulse transformer, high-frequency inverter circuit, modulation circuit, three phase rectifier filter circuit and many CPU control module; Described electric cleaner, high-frequency pulse transformer, high-frequency inverter circuit, modulation circuit and three phase rectifier filter circuit are connected successively, and high-frequency inverter circuit, modulation circuit and three phase rectifier filter circuit and many CPU control module interconnect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620125078 CN200981020Y (en) | 2006-11-14 | 2006-11-14 | Energy-saving type electric dust-cleaning apparatus high-frequency pulse power controlling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620125078 CN200981020Y (en) | 2006-11-14 | 2006-11-14 | Energy-saving type electric dust-cleaning apparatus high-frequency pulse power controlling device |
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| CN200981020Y true CN200981020Y (en) | 2007-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620125078 Expired - Lifetime CN200981020Y (en) | 2006-11-14 | 2006-11-14 | Energy-saving type electric dust-cleaning apparatus high-frequency pulse power controlling device |
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| CN (1) | CN200981020Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386800A (en) * | 2011-12-08 | 2012-03-21 | 崔建勋 | Low-voltage heavy-current high-power pulse power supply |
-
2006
- 2006-11-14 CN CN 200620125078 patent/CN200981020Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386800A (en) * | 2011-12-08 | 2012-03-21 | 崔建勋 | Low-voltage heavy-current high-power pulse power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: NANJING SAC NEW ENERGY TECHNOLOGY CO., LTD. Assignor: Nanjing Automation Co., Ltd., China Electronics Corp. Contract record no.: 2011320000493 Denomination of utility model: Energy-saving type electric dust-cleaning apparatus high-frequency pulse power controlling device Granted publication date: 20071128 License type: Exclusive License Record date: 20110401 |
|
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: NANJING SAC NEW ENERGY TECHNOLOGY CO., LTD. Assignor: Nanjing Automation Co., Ltd., China Electronics Corp. Contract record no.: 2011320000493 Date of cancellation: 20150109 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071128 |
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| EXPY | Termination of patent right or utility model |