CN203722849U - Air-cooled induction heating power supply - Google Patents
Air-cooled induction heating power supply Download PDFInfo
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- CN203722849U CN203722849U CN201420077859.8U CN201420077859U CN203722849U CN 203722849 U CN203722849 U CN 203722849U CN 201420077859 U CN201420077859 U CN 201420077859U CN 203722849 U CN203722849 U CN 203722849U
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Abstract
The utility model discloses an air-cooled induction heating power supply, and relates to the technical field of equipment for heating via an electric, magnetic or electromagnetic field. The heating power supply converts a three-phase 380V/50HZ AC into a DC source with an adjustable current through a three-phase full-bridge rectifying circuit and a flat wave reactor, and then converts DC power into a single-phase AC through an IGBT full-bridge inverter circuit to supply to a parallel resonant load. The power supply adopts the form of electromagnetic induction for heating, and has the characteristics of high heating speed, high efficiency, controllable heating zone and so forth.
Description
Technical field
The utility model relates to the equipment technical field heating by electric field, magnetic field or electromagnetic field, relates in particular to a kind of air-cooled induction heating power.
Background technology
At oil, natural gas line is carried job site, and job site, petrochemical industry production base and job site, large electric power plant station etc. all run into the weld preheating of large-scale pipeline joint and the heating process difficult problem that post-weld stress discharges.The heating of employing flame, temperature inequality and contaminated environment, operate also dangerous.Adopt resistance wire to utilize heat conducting mode to heat, when complicated operation and pipe diameter are larger, heating power can not meet intensification demand, and speed of application affects project progress slowly.
IGBT (insulated Gate Bipolar Transistor), insulated gate polar form power tube, the compound full-control type voltage driven type power electronic device being formed by BJT (double pole triode) and MOS (insulating gate type field effect tube).Be applied to the fields such as alternating current machine, frequency converter, Switching Power Supply, lighting circuit, Traction Drive.IGBT is BJT(bipolar transistor) and MOSFET(MOS (metal-oxide-semiconductor) memory) multiple device, be that industry is generally acknowledged, development is New Type Power Devices the most rapidly.The traditional devices such as IGBT and thyristor, although be all " switch ", but the former Core Superiority is, driving power is little, and saturation pressure reduces, and switching frequency is high, these are all each application institute active demands, the shortcoming of present stage IGBT is that cost is still high, so in the application allowing at cost, IGBT has started to replace conventional power device.IGBT, extensively for fields such as frequency converter, inverter, Switching Power Supply, lighting circuit and motors, runs through the fields such as consumer electronics and Industry Control.
Utility model content
The features such as technical problem to be solved in the utility model is to provide a kind of air-cooled induction heating power, and described power acquisition heats by the form of electromagnetic induction, has firing rate fast, and efficiency is high, and heating region is controlled.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of air-cooled induction heating power, it is characterized in that: the input of described heating power supply is divided into two-way after full bridge rectifier, diode D1 is connected in parallel on two outputs of full bridge rectifier, and an output of full bridge rectifier is electrically connected to another output of full bridge rectifier successively after inductance coil Ld, diode SCR7, resistance R X, knockout FL and current sensor CHB; The positive pole of diode DA1 connects the node of inductance coil Ld and diode SCR7, the negative pole of diode DA1 connects the collector electrode of bipolar transistor Q1, the emitter of bipolar transistor Q1 connects the collector electrode of bipolar transistor Q3, and the emitter of bipolar transistor Q3 is through the node of diode DA3 connecting resistance RX and knockout FL; The positive pole of diode DA2 connects the node of inductance coil Ld and diode SCR7, the negative pole of diode DA2 connects the collector electrode of bipolar transistor Q2, the emitter of bipolar transistor Q2 connects the collector electrode of bipolar transistor Q4, and the emitter of bipolar transistor Q4 is through the node of diode DA4 connecting resistance RX and knockout FL; One termination bipolar transistor Q1 of capacitor C and the node of bipolar transistor Q3, another termination bipolar transistor Q2 of capacitor C and the node of bipolar transistor Q4, resistance R is connected in parallel on the two ends of capacitor C after connecting with inductance L, the gate pole of described bipolar transistor Q1-Q4 is unsettled.
Preferably, described full bridge rectifier is three-phase bridge rectification circuit.
Preferably, the radiator that the power component of described power supply is used adopts air-cooled radiator.
The beneficial effect that adopts technique scheme to produce is: described air-cooled induction heating power is with respect to adopting heating component for workpiece mode of heating, adopt eddy heating for heating but not conduction pattern heating, there is firing rate fast, the efficiency of heating surface high (concentration of energy loss is little), the advantages such as heating region controlled (adjustment by power frequency, power and inductor form etc. can obtain desirable layer depth of the heating).In addition, described power supply is used air-cooled radiator to dispel the heat, and has power loss little, good heat dissipation effect, the feature such as easy to use.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment mono-
As shown in Figure 1, a kind of air-cooled induction heating power, the input of described heating power supply is divided into two-way after full bridge rectifier, because of the three-phase alternating current that is input as of described power supply, so described full bridge rectifier is three-phase bridge rectification circuit.Diode D1 is connected in parallel on two outputs of full bridge rectifier, and an output of full bridge rectifier is electrically connected to another output of full bridge rectifier successively after inductance coil Ld, diode SCR7, resistance R X, knockout FL and current sensor CHB; The positive pole of diode DA1 connects the node of inductance coil Ld and diode SCR7, the negative pole of diode DA1 connects the collector electrode of bipolar transistor Q1, the emitter of bipolar transistor Q1 connects the collector electrode of bipolar transistor Q3, and the emitter of bipolar transistor Q3 is through the node of diode DA3 connecting resistance RX and knockout FL; The positive pole of diode DA2 connects the node of inductance coil Ld and diode SCR7, the negative pole of diode DA2 connects the collector electrode of bipolar transistor Q2, the emitter of bipolar transistor Q2 connects the collector electrode of bipolar transistor Q4, and the emitter of bipolar transistor Q4 is through the node of diode DA4 connecting resistance RX and knockout FL; One termination bipolar transistor Q1 of capacitor C and the node of bipolar transistor Q3, another termination bipolar transistor Q2 of capacitor C and the node of bipolar transistor Q4, resistance R is connected in parallel on the two ends of capacitor C after connecting with inductance L, the gate pole of described bipolar transistor Q1-Q4 is unsettled.In order to reduce the impact of radiator on power, the radiator that the power component of described power supply is used adopts air-cooled radiator.
Air-cooled induction heating power, its operation principle is first by the reactance of three-phase bridge rectification circuit peace ripple, three-phase 380V/50HZ alternating current to be transformed into the adjustable DC current source of electric current, and then converts direct current energy the load of to single-phase alternating current supply parallel resonance by IGBT full bridge inverter.Load refers to inductor and workpiece system, inductor is generally the coil by the coiling of hollow water flowing cooling copper tube that passes into medium frequency alternating current, workpiece is put in inductor and puts workpiece in alternating magnetic field, application electromagnetic induction principle produces eddy current effect and generates heat, and reaches melting, diathermanous, quenching etc. and adds heat request.
Described power supply is with respect to adopting heating component for workpiece mode of heating, adopt eddy heating for heating but not conduction pattern heating, there is firing rate fast, the efficiency of heating surface high (concentration of energy loss is little), the advantages such as heating region controlled (adjustment by power frequency, power and inductor form etc. can obtain desirable layer depth of the heating).
Claims (3)
1. an air-cooled induction heating power, it is characterized in that: the input of described heating power supply is divided into two-way after full bridge rectifier, diode D1 is connected in parallel on two outputs of full bridge rectifier, and an output of full bridge rectifier is electrically connected to another output of full bridge rectifier successively after inductance coil Ld, diode SCR7, resistance R X, knockout FL and current sensor CHB; The positive pole of diode DA1 connects the node of inductance coil Ld and diode SCR7, the negative pole of diode DA1 connects the collector electrode of bipolar transistor Q1, the emitter of bipolar transistor Q1 connects the collector electrode of bipolar transistor Q3, and the emitter of bipolar transistor Q3 is through the node of diode DA3 connecting resistance RX and knockout FL; The positive pole of diode DA2 connects the node of inductance coil Ld and diode SCR7, the negative pole of diode DA2 connects the collector electrode of bipolar transistor Q2, the emitter of bipolar transistor Q2 connects the collector electrode of bipolar transistor Q4, and the emitter of bipolar transistor Q4 is through the node of diode DA4 connecting resistance RX and knockout FL; One termination bipolar transistor Q1 of capacitor C and the node of bipolar transistor Q3, another termination bipolar transistor Q2 of capacitor C and the node of bipolar transistor Q4, resistance R is connected in parallel on the two ends of capacitor C after connecting with inductance L, the gate pole of described bipolar transistor Q1-Q4 is unsettled.
2. air-cooled induction heating power according to claim 1, is characterized in that: described full bridge rectifier is three-phase bridge rectification circuit.
3. air-cooled induction heating power according to claim 1, is characterized in that: the radiator that the power component of described power supply is used adopts air-cooled radiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420077859.8U CN203722849U (en) | 2014-02-24 | 2014-02-24 | Air-cooled induction heating power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420077859.8U CN203722849U (en) | 2014-02-24 | 2014-02-24 | Air-cooled induction heating power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203722849U true CN203722849U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420077859.8U Expired - Fee Related CN203722849U (en) | 2014-02-24 | 2014-02-24 | Air-cooled induction heating power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105282889A (en) * | 2014-07-18 | 2016-01-27 | 特电株式会社 | Induction heat generation roller device |
| CN105960040A (en) * | 2016-06-30 | 2016-09-21 | 浙江天煌科技实业有限公司 | Induction heating power supply with novel cooling system |
| RU2598463C1 (en) * | 2015-04-28 | 2016-09-27 | Виктор Николаевич Мещеряков | Method for conversion of direct current |
-
2014
- 2014-02-24 CN CN201420077859.8U patent/CN203722849U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105282889A (en) * | 2014-07-18 | 2016-01-27 | 特电株式会社 | Induction heat generation roller device |
| RU2598463C1 (en) * | 2015-04-28 | 2016-09-27 | Виктор Николаевич Мещеряков | Method for conversion of direct current |
| CN105960040A (en) * | 2016-06-30 | 2016-09-21 | 浙江天煌科技实业有限公司 | Induction heating power supply with novel cooling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170428 Address after: 061800 Hebei, Wuqiao economic and Technological Development Zone, Jialing River Road, North Yanshan Road West Patentee after: Hebei extension mechanical and electrical equipment manufacturing Co., Ltd. Address before: 061800 Wuqiao Industrial Park, Hebei, Cangzhou No. 6 Patentee before: WUQIAO HENG YUAN ELECTROMECHANICAL EQUIPMENT FACTORY |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20180224 |