CN205377688U - Be applied to high voltage dc source of dust pelletizing system - Google Patents
Be applied to high voltage dc source of dust pelletizing system Download PDFInfo
- Publication number
- CN205377688U CN205377688U CN201521075766.2U CN201521075766U CN205377688U CN 205377688 U CN205377688 U CN 205377688U CN 201521075766 U CN201521075766 U CN 201521075766U CN 205377688 U CN205377688 U CN 205377688U
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- circuit
- power supply
- high voltage
- voltage
- resonant
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- 239000000428 dust Substances 0.000 title claims abstract description 18
- 238000005453 pelletization Methods 0.000 title claims abstract description 12
- 238000010304 firing Methods 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 abstract 4
- 238000004321 preservation Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 nonferrous smelting Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
The utility model relates to a be applied to high voltage dc source of dust pelletizing system, including converter and cockcroft walton accelerator, the converter is including the three -phase input filter, rectifier circuit and the high voltage power supply inverter circuit that connect gradually, high voltage power supply inverter circuit adopts the soft switch IGBT full -bridge circuit of zero current, and a high voltage power supply inverter circuit output series connection resonant capacitor C2, cockcroft walton accelerator include high voltage transformers, voltage multiplying rectifier, anti strike sparks circuit and the high voltage output structure that connects gradually, establishes ties and have resonant inductance L1 in high voltage transformers's former limit, connect in parallel and have the 2nd resonant capacitor C1 in high voltage transformers's former limit, a resonant capacitor C2, resonant inductance L1 and the 2nd resonant capacitor C1 form the resonance tank circuit, the utility model discloses the combination of the well high voltage power supply inverter circuit and the resonance tank circuit has short circuit self preservation and protects the characteristic, and during load short circuit promptly, the resonant inductance can prevent the electric current to be uprushed, so effectively reduces the impact to power supply circuit, and the anti performance of striking sparks of circuit obtains improving.
Description
Technical field
This utility model relates to a kind of high-voltage DC power supply, especially for the high-voltage DC power supply of dust pelletizing system.
Background technology
Electric cleaner is internationally recognized high effect dust cleaner, so far the history of existing more than 100 year, is purifying coal-fired flue gas and one of main device that many industrial dust pollutions control.Have been widely used for the industrial departments such as thermal power generation, building material cement, iron and steel, nonferrous smelting, chemical industry, light industry papermaking, electronics and machinery at present.Electric dust removing system is mainly made up of electric cleaner body and power supply, and power supply produces the high pressure needed for electric precipitation, although only account for the very small part of electric dust removing system cumulative volume, but extremely important, and the raising of efficiency of dust collection is had important function.Currently, the power supply device of electric cleaner is mainly based on the high pressure silicon commutating power supply of thyristor control, and its groundwork frequency is exactly mains frequency, it is bulky, quality is big, efficiency is low, poor reliability, meanwhile, its output secondary voltage fluctuation is very big, have impact on dust-collecting efficiency.
Summary of the invention
This utility model provides a kind of anti-high-voltage DC power supply that sparking performance is good, reliability is high, safe.
Technical solution of the present utility model is:
The high-voltage DC power supply being applied to dust pelletizing system provided by the utility model, including changer and Cockcroft-Walton accelerator, it is characterized in that three-phase input filter, rectification circuit and the high voltage power supply inverter circuit that described changer includes being sequentially connected with；Described high voltage power supply inverter circuit adopts zero-current soft switch IGBT full-bridge circuit, described high voltage power supply inverter circuit outfan is connected the first resonant capacitance C2, described Cockcroft-Walton accelerator includes the high-tension transformer, voltage multiplying rectifier, anti-firing circuit and the High voltage output structure that are sequentially connected with, the former limit of described high-tension transformer is in series with resonant inductance L1, the former limit of described high-tension transformer is parallel with the second resonant capacitance C1, described first resonant capacitance C2, resonant inductance L1 and the second resonant capacitance C1 and forms resonant groove path；It is in parallel that described anti-firing circuit includes inductance L2, diode D1 and resistance R1, described inductance L2 and diode D1, and described R1 is connected to inductance L2 and the outfan of diode D1 parallel circuit.
Further, described resonant inductance is provided by the primary leakage inductance L1 of high-tension transformer, and described second resonant capacitance C1 is provided by the distribution capacity of high-tension transformer.
Further; described high-voltage DC power supply also includes current sampling circuit, high pressure sample circuit, control circuit, protection circuit and drive circuit; described high pressure sample circuit adopts for the output voltage resisting firing circuit; described current sampling circuit is for sampling to the output electric current of voltage doubling rectifing circuit; the output signal output of high pressure sample circuit and current sampling circuit is to the control circuit input signal as control circuit, and described control circuit controls high voltage power supply inverter circuit by protecting circuit and drive circuit.
Further, Cockcroft-Walton accelerator of the present utility model adopts the structure that electric capacity is vertical, and high-tension transformer, voltage multiplying rectifier, anti-firing circuit and High voltage output structure integral installation, in cylindrical metal bucket, adopt SF6Gas is as insulation and heat eliminating medium.
Further, high voltage power supply inverter circuit 5 of the present utility model is installed in the cabinet of all-metal shielding, described cabinet exterior arrangement fan auxiliary heat dissipation.
This utility model compared with prior art provides the benefit that:
1, the anti-sparking performance of high voltage power supply of the present utility model is good, and efficiency is high, and reliability is high, thus improve dust collection efficiency；Specifically: the combination of this utility model mesohigh power inverse transformation circuit and resonant groove path has short-circuit self-shield characteristic; namely during load short circuits; resonant inductance can stop electric current to be uprushed, and so effectively reduces the impact to power circuit, and the anti-sparking performance of circuit is improved；Meanwhile, anti-firing circuit can discharge the electric energy on dupler electric capacity, reduces the sparking infringement to power supply and load；The sparking infringement to power supply and load is reduced, it is possible to effectively protect power supply and load and provide the time for power initiation overcurrent protection with this.
2, the volume-diminished of this utility model high voltage power supply is not to carrying out 8%～10% before Miniaturization Design, is greatly promoted the high voltage power supply extensive use at electric precipitation and other similar fields.It is embodied in: due to the application of high frequency, high pressure occasion, needs due to insulation, transformer primary secondary spacing is bigger, each winding self has leakage inductance, layer capacitance and turn-to-turn capacitance, inevitably introducing the parasitic parameter of transformator in circuit, the impact of circuit is dramatically increased by these parasitic parameters with the increase of transformer voltage ratio.Resonant slots circuit of the present utility model utilizes the inductance of transformator self, the natural resonance of electric capacity realizes zero current turning-on, zero-voltage zero-current turns off; switching loss is little; do not need additional absorbing circuit to protect, further decrease volume, reduce the switching loss of device.
3, changer of the present utility model have employed integrated magnetic, utilizes leakage inductance and the distribution capacity of high-tension transformer, reduces the impact of parasitic parameter, it is possible to improves work efficiency.
4, this utility model Cockcroft-Walton accelerator profile adopts cylinder, makes the homogenization as much as possible of the electric field in air gap by design and simulation；Adopt SF6Gas, as insulation and heat eliminating medium, not only increases the insulation resistance energy of power supply, and does not need additional heat abstractor, reduce the volume and weight of power supply.
Accompanying drawing explanation
Fig. 1 is the system construction drawing that this utility model is applied to the miniaturization high-voltage DC power supply of dust pelletizing system.
Fig. 2 is the topology diagram of high voltage power supply inverter circuit.
Fig. 3 is anti-firing circuit structural representation.
Detailed description of the invention
As shown in Figure 1, this utility model is applied to the miniaturization high voltage direct current source apparatus of dust pelletizing system by three-phase main-frequency AC-powered, do not control full bridge rectifier through three-phase input filter, three-phase and be transformed to unidirectional current, being reverse into high frequency 50kHz alternating current through high voltage power supply inverter circuit, alternating current is output as 60kV high-tension electricity then through high-tension transformer, voltage multiplying rectifier, anti-firing circuit and High voltage output structure etc..Three-phase input filter, rectification circuit, high voltage power supply inverter circuit are installed in the inverter housing of all-metal shielding.Inverter housing doubles as radiator, by extremely extraneous for the heat conduction produced inside changer, and inverter housing exterior arrangement fan auxiliary heat dissipation.High-tension transformer, voltage multiplying rectifier, anti-firing circuit are installed in Cockcroft-Walton accelerator steel drum.Electrical connection between inverter housing and Cockcroft-Walton accelerator steel drum is realized by shielded cable and high tension cable.In changer described in the utility model, switching frequency is chosen as more than 20kHz and reduces power volume and reduce output ripple.In Cockcroft-Walton accelerator described in the utility model, Cockcroft-Walton accelerator steel drum profile adopts cylinder, and dupler adopts the structure that electric capacity is vertical, makes the homogenization as much as possible of the electric field in air gap, and simultaneously easy to assembly, insulation distance is abundant.Adopt SF6Gas, as insulation and heat eliminating medium, not only increases the insulation resistance energy of power supply, and does not need additional heat abstractor, reduce the volume and weight of power supply.
High voltage output is sampled by high pressure, electric current output feeds back to control circuit by current sample, and IGBT full bridge inverter is controlled by control circuit by regulating drive circuit pulse frequency, and power supply was carried out stream, overvoltage, Protection of arcing by protection circuit.
As in figure 2 it is shown, described high voltage power supply inverter circuit adopts H-bridge circuit, adopt Zero-current soft switch circuit, it is achieved zero current turning-on, zero-voltage zero-current turn off.The output of high voltage power supply inverter circuit only need to connect a high-pressure series resonant capacitance, and resonant inductance is provided by the primary leakage inductance L1 of high-tension transformer, and parallel resonance electric capacity is provided by the C1 of high-tension transformer.This integrated magnetic is adopted to be effectively reduced power volume and improve work efficiency.
Concrete, described voltage doubling rectifing circuit adopts C-W voltage doubling rectifing circuit, and the voltage ripple of output is less than 2%.As it is shown on figure 3, described anti-firing circuit 8 structure is " inductance+diode+resistance ", reduce the sparking infringement to power supply and load with this.
Claims (5)
1. it is applied to a high-voltage DC power supply for dust pelletizing system, including changer and Cockcroft-Walton accelerator, it is characterised in that:
Described changer includes the three-phase input filter, rectification circuit and the high voltage power supply inverter circuit that are sequentially connected with；
Described high voltage power supply inverter circuit adopts zero-current soft switch IGBT full-bridge circuit, and described high voltage power supply inverter circuit outfan is connected the first resonant capacitance C2,
Described Cockcroft-Walton accelerator includes the high-tension transformer, voltage multiplying rectifier, anti-firing circuit and the High voltage output structure that are sequentially connected with, and the former limit of described high-tension transformer is in series with resonant inductance L1, and the former limit of described high-tension transformer is parallel with the second resonant capacitance C1,
Described first resonant capacitance C2, resonant inductance L1 and the second resonant capacitance C1 form resonant groove path；
It is in parallel that described anti-firing circuit includes inductance L2, diode D1 and resistance R1, described inductance L2 and diode D1, and described R1 is connected to inductance L2 and the outfan of diode D1 parallel circuit.
2. the high-voltage DC power supply being applied to dust pelletizing system according to claim 1, it is characterised in that: described resonant inductance L1 is provided by the primary leakage inductance of high-tension transformer, and described second resonant capacitance C1 is provided by the distribution capacity of high-tension transformer.
3. the high-voltage DC power supply being applied to dust pelletizing system according to claim 1, it is characterised in that: described high-voltage DC power supply also includes current sampling circuit, high pressure sample circuit, control circuit, protection circuit and drive circuit,
Described high pressure sample circuit is sampled for the output voltage resisting firing circuit; described current sampling circuit is for sampling to the output electric current of voltage doubling rectifing circuit; the output signal output of high pressure sample circuit and current sampling circuit is to the control circuit input signal as control circuit, and described control circuit controls high voltage power supply inverter circuit by protecting circuit and drive circuit.
4. the high-voltage DC power supply being applied to dust pelletizing system according to claim 1 or 2 or 3, it is characterised in that:
Described Cockcroft-Walton accelerator adopts the structure that electric capacity is vertical, high-tension transformer, voltage multiplying rectifier, anti-firing circuit and High voltage output structure, and integral installation, in cylindrical metal bucket, adopts SF6Gas is as insulation and heat eliminating medium.
5. the high-voltage DC power supply being applied to dust pelletizing system according to claim 4, it is characterised in that:
Described high voltage power supply inverter circuit is installed in the cabinet of all-metal shielding, described cabinet exterior arrangement fan auxiliary heat dissipation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521075766.2U CN205377688U (en) | 2015-12-21 | 2015-12-21 | Be applied to high voltage dc source of dust pelletizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521075766.2U CN205377688U (en) | 2015-12-21 | 2015-12-21 | Be applied to high voltage dc source of dust pelletizing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205377688U true CN205377688U (en) | 2016-07-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521075766.2U Expired - Fee Related CN205377688U (en) | 2015-12-21 | 2015-12-21 | Be applied to high voltage dc source of dust pelletizing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205377688U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429482A (en) * | 2015-12-21 | 2016-03-23 | 西安航天动力研究所 | High-voltage direct current power supply applied to dust removal system |
| CN108616222A (en) * | 2018-07-10 | 2018-10-02 | 南京工业大学 | Multi-gear output high-voltage power supply for smoke purification |
-
2015
- 2015-12-21 CN CN201521075766.2U patent/CN205377688U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429482A (en) * | 2015-12-21 | 2016-03-23 | 西安航天动力研究所 | High-voltage direct current power supply applied to dust removal system |
| CN108616222A (en) * | 2018-07-10 | 2018-10-02 | 南京工业大学 | Multi-gear output high-voltage power supply for smoke purification |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |