CN105450037A - Intermediate frequency power supply heating system - Google Patents
Intermediate frequency power supply heating system Download PDFInfo
- Publication number
- CN105450037A CN105450037A CN201511017767.6A CN201511017767A CN105450037A CN 105450037 A CN105450037 A CN 105450037A CN 201511017767 A CN201511017767 A CN 201511017767A CN 105450037 A CN105450037 A CN 105450037A
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- heating
- output
- power supply
- intermediate frequency
- frequency power
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 153
- 230000002093 peripheral effect Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003990 capacitor Substances 0.000 abstract 2
- 238000004804 winding Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910000754 Wrought iron Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Induction Heating (AREA)
Abstract
The invention discloses an intermediate frequency power supply heating system. The intermediate frequency power supply heating system comprises a three-phase diode rectifier bridge device and an IGBT (Insulated Gate Bipolar Transistor) full-bridge single-phase inverter which are connected in sequence, and a selector switch, wherein the input end of the selector switch is connected to the output end of the IGBT full-bridge single-phase inverter; one of two ways of the output ends of the selector switch is connected to the input end of a homogeneous tube heating output transformer, and the other way of the output end of the selector switch is connected to the input end of a weld joint heating output transformer; and the output end of the homogeneous tube heating output transformer is connected to a homogeneous tube heating resonant capacitor bank, and the output end of the weld joint heating output transformer is connected to a weld joint heating resonant capacitor bank. The intermediate frequency power supply heating system has the following technical effects that the output matching of homogeneous tube induction heating and the output matching of weld joint heating are both met, the device volume is reduced, and one device meets technological requirements of two heating ways to be convenient for a user to use.
Description
Technical field
The present invention relates to a kind of intermediate frequency power supply heating system.
Background technology
At present, induction power supply firing equipment is in the thermal treatment production process to steel pipe, rod iron and welded tube welding seam, there is quotability widely, there is no environmental pollution, meet environmental requirement, be convenient to carry out technology controlling and process, be easy to tissue and produce, possess skills advantage, is government encourage, enterprise produces top-priority new technology, new technology.Meanwhile, it is all need independently power supply to carry out confession electric heating that conventional common weld seam heating heat with homogeneous tube, and namely weld seam heating system and homogeneous tube heating system independently two overlap power-supply systems.
The heat treated power source installing system weak point of above-mentioned intermediate frequency:
The first, due to the difference of heating process, weld seam heating process needs a set of firing equipment, homogeneous tube heating process needs again a set of firing equipment, when this makes to require two kinds of Product Process production on producing, client needs two to overlap independently power-supply system, and the introduction cost of client to its equipment is higher.
Second, because a kind of heating process just needs a kind of power-supply system, equipment is taken up space at production scene factory building also more, also cause the investment at factory building initial stage also correspondingly to increase, comprise power supply, auxiliary system, power capacity application etc. all can cause initial investment also to increase.
3rd, equipment use function singleness, only can apply the Production requirement of a class handicraft product, has limited to the using function of equipment, and these integrate and cannot realize maximizing performance that is efficient, energy-saving and environmental protection.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of intermediate frequency power supply heating system is provided, it not only meets the output matching of homogeneous tube induction heating but also meets the output matching of weld seam heating, reduce the volume of equipment, an equipment meets the process requirements of two kinds of mode of heatings, convenient for users.
A kind of technical scheme realizing above-mentioned purpose is: a kind of intermediate frequency power supply heating system, comprises the three-phase diode rectifier bridge device and IGBT full-bridge single-phase inverter that connect successively;
It also comprises diverter switch, the input of described diverter switch connects the output of described IGBT full-bridge single-phase inverter, the two-way output of described diverter switch, wherein a road output connects the input of homogeneous tube heating output transformer, the input of an other road output attachment weld heating output transformer;
The output of described homogeneous tube heating output transformer connects homogeneous tube heating resonant capacitance group, the output attachment weld heating resonant capacitance group of described weld seam heating output transformer.
Further, described intermediate frequency power supply heating system also comprises the main circuit breaker and fast acting fuse that connect successively, and described main circuit breaker receives external three-phase alternating current, and described fast acting fuse connects described three-phase diode rectifier bridge device.
Further, the output of described three-phase diode rectifier bridge device is provided with flat ripple reactance device, and described flat ripple reactance device comprises the DC fuse group, direct current resistance-capacitance absorption part and the direct current reactor that connect successively.
Further, described intermediate frequency power supply heating system also comprises control circuit, described control circuit comprises inversion control and feedback sense circuit, and described inversion control and feedback sense circuit are provided with the inverter control circuit of described connection described IGBT full-bridge single-phase inverter.
Further, described inversion control and feedback sense circuit are also provided with the current feedback signal receiving circuit of the output connecting described IGBT full-bridge single-phase inverter, and connect the voltage feedback signal receiving circuit of the output of described homogeneous tube heating output transformer and the output of described weld seam heating output transformer.
Further, described control circuit also comprises PLC, master computer and peripheral signal receiving circuit, described PLC connects described inversion control and feedback sense circuit, and described master computer is connected described PLC with described peripheral signal receiving circuit simultaneously.
Further, described homogeneous tube heating output transformer and described weld seam heating output transformer are respectively equipped with a cooling by water system.
Further, this intermediate frequency power supply heating system also comprises a cabinet, described three-phase diode rectifier bridge device and described IGBT full-bridge single-phase inverter are placed in a compartment of this cabinet, and described homogeneous tube heating output transformer, described homogeneous tube heating resonant capacitance group, described weld seam heating output transformer, described weld seam heating resonant capacitance group are placed in the another one compartment of this cabinet.
Have employed the technical scheme of a kind of intermediate frequency power supply heating system of the present invention, comprise the three-phase diode rectifier bridge device and IGBT full-bridge single-phase inverter that connect successively, and diverter switch, the input of described diverter switch connects the output of described IGBT full-bridge single-phase inverter, the two-way output of described diverter switch, wherein a road output connects the input of homogeneous tube heating output transformer, the input of an other road output attachment weld heating output transformer; The output of described homogeneous tube heating output transformer connects homogeneous tube heating resonant capacitance group, the output attachment weld heating resonant capacitance group of described weld seam heating output transformer.Its technique effect is: it not only meets the output matching of homogeneous tube induction heating but also meets the output matching of weld seam heating, and reduce the volume of equipment, an equipment meets the process requirements of two kinds of mode of heatings, convenient for users.
Accompanying drawing explanation
Fig. 1 is the theory structure block diagram of a kind of intermediate frequency power supply heating system of the present invention.
Fig. 2 is the overall appearance structure chart of a kind of intermediate frequency power supply heating system of the present invention.
Fig. 3 is the cabinet inlet wire end view of a kind of intermediate frequency power supply heating system of the present invention.
Fig. 4 is the facade element layout of a kind of intermediate frequency power supply heating system of the present invention.
Fig. 5 is the component placement vertical view of a kind of intermediate frequency power supply heating system of the present invention.
Embodiment
Refer to Fig. 1, the present inventor, in order to understand technical scheme of the present invention better, below by embodiment particularly, and is described in detail by reference to the accompanying drawings:
Refer to Fig. 1, a kind of intermediate frequency power supply heating system of the present invention, comprise main circuit breaker 1, fast acting fuse 2, three-phase diode rectifier bridge device 3, IGBT full-bridge single-phase inverter 4, diverter switch 5, homogeneous tube heating output transformer 61 and weld seam heating output transformer 62.Main circuit breaker 1 receives external three-phase alternating current input, is connected between main circuit breaker 1 with three-phase diode rectifier bridge device 3 by fast acting fuse 2.Three-phase diode rectifier bridge device 3 is for changing external three-phase alternating current into single-phase DC electric current.
The output of three-phase diode rectifier bridge device 3 is provided with flat ripple reactance device (not shown).Described flat ripple reactance device comprises the DC fuse group, direct current resistance-capacitance absorption part and the direct current reactor that connect successively.The effect of described flat ripple reactance device is the interference signal in filtering single-phase DC electric current.
IGBT full-bridge single-phase inverter 4 comprises IGBT inversion module and connects the IGBT trigger equipment of described IGBT inversion module, and IGBT controls power supply.The effect of IGBT full-bridge single-phase inverter 4 is that the single-phase DC current transitions exported by three-phase diode rectifier bridge device 3 is the alternating current of input homogeneous tube heating output transformer 61 or weld seam heating output transformer 62.
Diverter switch 5 is positioned at IGBT full-bridge single-phase inverter 4, and homogeneous tube heats output transformer 61 and weld seam heats between output transformer 62, and the input of diverter switch 5 connects IGBT full-bridge single-phase inverter 4.The two-way output of diverter switch 5, wherein a road output connects the input of homogeneous tube heating output transformer 61.The input of an other road output attachment weld heating output transformer 62.By the switching of diverter switch 5, make IGBT full-bridge single-phase inverter 4 and homogeneous tube heat output transformer 61 conducting, or heat output transformer 62 conducting with weld seam.
Homogeneous tube heating output transformer 61 and weld seam heating output transformer 62 are all provided with input coil, iron core and output winding.The two ends of the input coil of homogeneous tube heating output transformer 61 all connect a road output of diverter switch 5, the two ends of the input coil of weld seam heating output transformer 62 all connect an other road output of diverter switch 5, by the switching of diverter switch 5, make the A.C. current that IGBT full-bridge single-phase inverter 4 exports, the input coil of input homogeneous tube heating output transformer 61, or the input coil of input weld seam heating output transformer 62.
The two ends of the output winding of homogeneous tube heating output transformer 61 connect a resonant capacitance respectively, these two resonant capacitance composition homogeneous tube heating resonant capacitance groups 71, the output 711 of homogeneous tube heating resonant capacitance group 71 exports the load of row's connection homogeneous tube heating by power supply, homogeneous tube heating output transformer 61 and homogeneous tube heating resonant capacitance group 71 form homogeneous tube inversion export resonance loop, connect the load of described homogeneous tube heating.
The two ends of the output winding of weld seam heating output transformer 62 connect a resonant capacitance respectively, these two resonant capacitance composition weld seam heating resonant capacitance groups 72, the output 721 of weld seam heating resonant capacitance group 72 exports the load of row's attachment weld heating by power supply, weld seam heating output transformer 62 and weld seam heating resonant capacitance group 72 form weld seam inversion export resonance loop, connect the load of described weld seam heating.
The input of the output transformer 61 of homogeneous tube heating in other words connects a road output of diverter switch 5, output connects homogeneous tube heating resonant capacitance group 71, the input of weld seam heating output transformer 62 connects an other road output of diverter switch 5, output attachment weld heating resonant capacitance group 72.
A kind of intermediate frequency power supply heating system of the present invention comprises a control circuit 8, comprise inversion control and feedback sense circuit 81, PLC 82, and master computer 83 and peripheral signal receiving circuit 84, wherein inversion control and feedback sense circuit 81 are provided with the inverter control circuit of the IGBT trigger equipment connecting IGBT full-bridge single-phase inverter 4, connect the current feedback signal receiving circuit of the output of IGBT full-bridge single-phase inverter 4, and connect the voltage feedback signal receiving circuit at the two ends of output winding of homogeneous tube heating output transformer 61 and the two ends of the output winding of weld seam heating output transformer 62.PLC 82 connects inversion control and feedback sense circuit 81, and master computer 83 is connected PLC 82 with peripheral signal receiving circuit 84 simultaneously.Inversion control and feedback sense circuit 81, PLC 82, and master computer 83 and peripheral signal receiving circuit 84, be all positioned on a control board.
Simultaneously, a kind of intermediate frequency power supply heating system of the present invention, also for homogeneous tube heating output transformer 61 and weld seam heating output transformer 62 are respectively equipped with a set of cooling by water system, cannot normally not run because of heating to make homogeneous tube heating output transformer 61 and weld seam heating output transformer 62.
A kind of intermediate frequency power supply heating system of the present invention, also comprises a cabinet 9, and cabinet 9 is divided into the first compartment 91, second compartment 92, first compartment 91 to be furnished with Yishanmen, and the second compartment 92 is furnished with two fan doors.
First compartment 91 is the compartment of a Knapsack structure, signal lamp is equipped with in the front of the door of the first compartment 91, comprise equipment fault, standby condition and four groups of instrument displays, power board, signal transducer, control circuit 8 are equipped with in the back side of the door of the first compartment 91, first compartment 91 built with control transformer (not shown), with main circuit breaker 1, the power supply of fast acting fuse 2, three-phase diode rectifier bridge device 3, IGBT full-bridge single-phase inverter 4 and correspondence thereof and triggering signal plate.Second compartment 92 is built with homogeneous tube heating output transformer 61, homogeneous tube heating resonant capacitance group 71, weld seam heating output transformer 62, weld seam heating resonant capacitance group 72, diverter switch 5, and heat power supply corresponding to resonant capacitance group 71 with homogeneous tube and export and arrange, heat power supply corresponding to resonant capacitance group 72 with weld seam and export and arrange, and for cooling by water system that the cooling by water system that cools homogeneous tube heating output transformer 61 and butt welded seam heating output transformer 62 cool.
This intermediate frequency power supply firing equipment has multi-protective function:
By the short-circuit protection of main circuit breaker 1 and fast acting fuse 2, ensure that the reliability service of three-phase diode rectifier bridge device 3 and IGBT full-bridge single-phase inverter 4.
Cooling by water system described in two-way contains the detection of safe current, water temperature detects, and can guarantee that homogeneous tube heating output transformer 61 and weld seam heat output transformer 62 not hot under the ruuning situation of full power, rated frequency, guarantee equipment reliability service.
Inversion control and feedback sense circuit 81 ensure that output frequency is stable, reliable.
Inversion control and feedback sense circuit 81 carry the current feedback signal receiving circuit of the output connecting IGBT full-bridge single-phase inverter 4, and connect the voltage feedback signal receiving circuit at the two ends of output winding of homogeneous tube heating output transformer 61 and the two ends of the output winding of weld seam heating output transformer 62, guarantee that input power is reliable and stable.
Peripheral auxiliary security detection is carried out by PLC 83.
A kind of intermediate frequency power supply heating system of the present invention adopts modular three-phase diode rectifier bridge device 3, IGBT full-bridge single-phase inverter 4, possesses the load heating process that coupling two kinds is multi-form simultaneously: not only meet the output matching of homogeneous tube induction heating but also meet the output matching of weld seam heating.
A kind of intermediate frequency power supply heating system of the present invention also possesses following advantage simultaneously:
First, the two-way being input to final intermediate frequency power supply from three-phase alternating-current supply exports, and its volume, relative to the summation of a homogeneous tube power supply heating system and a weld seam power supply heating system, obviously reduces, the structure of compact also improves the utilization ratio of electric energy, avoids remote power delivery.
The second, the microminiaturization of volume, making takes up room in a kind of intermediate frequency power supply heating system of the present invention also reduces greatly, for the user of equipment also saves hall space, reduces the demand of Factory Electricity Supply and auxiliary equipment.
3rd, homogeneous tube heating output transformer 61 and weld seam heating output transformer 62 all adopt the topological export structure of the resonant capacitance circuit of intermediate frequency two-way, and making to meet different product heat treatment is that the technological requirement that homogeneous tube heating or weld seam heat becomes possibility.
4th, the adjustment of the capacitance parameter configuration of resonant capacitance group 72 is heated by homogeneous tube heating resonant capacitance group 71 and weld seam, a kind of intermediate frequency power supply heating system of the present invention is made to meet when 10kHz, the technique of the heating of homogeneous tube heating inductor and the heating of weld seam heating inductor is selected flexibly, and power can reach 450kW.Be enough to the demand meeting equipment for Heating Processing in the market.
Those of ordinary skill in the art will be appreciated that, above embodiment is only used to the present invention is described, and be not used as limitation of the invention, as long as in spirit of the present invention, all will drop in Claims scope of the present invention the change of the above embodiment, modification.
Claims (8)
1. an intermediate frequency power supply heating system, comprises the three-phase diode rectifier bridge device and IGBT full-bridge single-phase inverter that connect successively; It is characterized in that:
It also comprises diverter switch, the input of described diverter switch connects the output of described IGBT full-bridge single-phase inverter, the two-way output of described diverter switch, wherein a road output connects the input of homogeneous tube heating output transformer, the input of an other road output attachment weld heating output transformer;
The output of described homogeneous tube heating output transformer connects homogeneous tube heating resonant capacitance group, the output attachment weld heating resonant capacitance group of described weld seam heating output transformer.
2. a kind of intermediate frequency power supply heating system according to claim 1, it is characterized in that: described intermediate frequency power supply heating system also comprises the main circuit breaker and fast acting fuse that connect successively, described main circuit breaker receives external three-phase alternating current, and described fast acting fuse connects described three-phase diode rectifier bridge device.
3. a kind of intermediate frequency power supply heating system according to claim 1, it is characterized in that: the output of described three-phase diode rectifier bridge device is provided with flat ripple reactance device, described flat ripple reactance device comprises the DC fuse group, direct current resistance-capacitance absorption part and the direct current reactor that connect successively.
4. a kind of intermediate frequency power supply heating system according to claim 1, it is characterized in that: described intermediate frequency power supply heating system also comprises control circuit, described control circuit comprises inversion control and feedback sense circuit, and described inversion control and feedback sense circuit are provided with the inverter control circuit of described connection described IGBT full-bridge single-phase inverter.
5. a kind of intermediate frequency power supply heating system according to claim 4, it is characterized in that: the current feedback signal receiving circuit described inversion control and feedback sense circuit being also provided with the output connecting described IGBT full-bridge single-phase inverter, and connect the voltage feedback signal receiving circuit of the output of described homogeneous tube heating output transformer and the output of described weld seam heating output transformer.
6. a kind of intermediate frequency power supply heating system according to claim 4, it is characterized in that: described control circuit also comprises PLC, master computer and peripheral signal receiving circuit, described PLC connects described inversion control and feedback sense circuit, and described master computer is connected described PLC with described peripheral signal receiving circuit simultaneously.
7. a kind of intermediate frequency power supply heating system according to claim 1, is characterized in that: described homogeneous tube heating output transformer and described weld seam heating output transformer are respectively equipped with a cooling by water system.
8. a kind of intermediate frequency power supply heating system according to claim 1, it is characterized in that: this intermediate frequency power supply heating system also comprises a cabinet, described three-phase diode rectifier bridge device and described IGBT full-bridge single-phase inverter are placed in a compartment of this cabinet, and described homogeneous tube heating output transformer, described homogeneous tube heating resonant capacitance group, described weld seam heating output transformer, described weld seam heating resonant capacitance group are placed in the another one compartment of this cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017767.6A CN105450037A (en) | 2015-12-29 | 2015-12-29 | Intermediate frequency power supply heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017767.6A CN105450037A (en) | 2015-12-29 | 2015-12-29 | Intermediate frequency power supply heating system |
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| Publication Number | Publication Date |
|---|---|
| CN105450037A true CN105450037A (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511017767.6A Pending CN105450037A (en) | 2015-12-29 | 2015-12-29 | Intermediate frequency power supply heating system |
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| Country | Link |
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| CN (1) | CN105450037A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763073A (en) * | 2016-05-17 | 2016-07-13 | 株洲弗拉德科技有限公司 | IGBT variable-frequency power source for energy-saving intermediate-frequency smelting furnace |
| CN108281263A (en) * | 2018-03-26 | 2018-07-13 | 江苏东方四通科技股份有限公司 | A kind of transformer of bar on-line annealing high frequency induction power supply and the overall structure of resonant capacitance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201315678Y (en) * | 2008-08-27 | 2009-09-23 | 东莞市友美电源设备有限公司 | Electromagnetic variable frequency energy-saving controller for heating system |
| CN101854753A (en) * | 2010-06-30 | 2010-10-06 | 无锡应达工业有限公司 | Totally-enclosed medium-frequency power control cabinet |
| CN103944408A (en) * | 2014-04-03 | 2014-07-23 | 十堰恒进科技有限公司 | Dual-frequency power source quenching heating equipment |
| CN205453510U (en) * | 2015-12-29 | 2016-08-10 | 无锡应达工业有限公司 | Intermediate frequency power supply heating system |
-
2015
- 2015-12-29 CN CN201511017767.6A patent/CN105450037A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201315678Y (en) * | 2008-08-27 | 2009-09-23 | 东莞市友美电源设备有限公司 | Electromagnetic variable frequency energy-saving controller for heating system |
| CN101854753A (en) * | 2010-06-30 | 2010-10-06 | 无锡应达工业有限公司 | Totally-enclosed medium-frequency power control cabinet |
| CN103944408A (en) * | 2014-04-03 | 2014-07-23 | 十堰恒进科技有限公司 | Dual-frequency power source quenching heating equipment |
| CN205453510U (en) * | 2015-12-29 | 2016-08-10 | 无锡应达工业有限公司 | Intermediate frequency power supply heating system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763073A (en) * | 2016-05-17 | 2016-07-13 | 株洲弗拉德科技有限公司 | IGBT variable-frequency power source for energy-saving intermediate-frequency smelting furnace |
| CN108281263A (en) * | 2018-03-26 | 2018-07-13 | 江苏东方四通科技股份有限公司 | A kind of transformer of bar on-line annealing high frequency induction power supply and the overall structure of resonant capacitance |
| CN108281263B (en) * | 2018-03-26 | 2023-06-02 | 江苏东方四通科技股份有限公司 | Integral structure of transformer and resonant capacitor of bar on-line annealing high-frequency induction power supply |
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Application publication date: 20160330 |
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