CN104852609A - Industrial resistance furnace temperature control power adjustment device - Google Patents
Industrial resistance furnace temperature control power adjustment device Download PDFInfo
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- CN104852609A CN104852609A CN201510250330.0A CN201510250330A CN104852609A CN 104852609 A CN104852609 A CN 104852609A CN 201510250330 A CN201510250330 A CN 201510250330A CN 104852609 A CN104852609 A CN 104852609A
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Abstract
The invention discloses an industrial resistance furnace temperature control power adjustment device, which comprises a common mode filter module, an uncontrolled rectifier bridge module, a high-frequency filter module, a high-frequency inverter module, a high-frequency transformer isolation transformation module, and a high-frequency rectifier module, wherein three-phase power frequency AC power is inputted to the common mode filter module; the high-frequency inverter module has an adjustable duty ratio; each function module is electrically connected in sequence; and the uncontrolled rectifier bridge module and the high-frequency filter module are used for converting the inputted three-phase AC into high-voltage DC. In the above mode, according to the industrial resistance furnace temperature control power adjustment device provided by the invention, the input power factor is high, harmonic content is low, and energy-saving effects are obvious; linear power adjustment is realized, and the temperature control precision is high; input and output are isolated, safety and reliability are high, the load adaptive range is wide, the service life of a heating element is prolonged effectively, and the maintenance cost of equipment is greatly reduced; and the volume is small, the weight is light, a large quantity of precious resources such as copper and steel can be saved, and the device is a promising regeneration product.
Description
Technical field
The present invention relates to a kind of Power Conditioning Unit, particularly relate to a kind of industrial resistance furnace temperature control Power Conditioning Unit.
Background technology
The existing industrial resistance furnace temperature control Power Conditioning Unit state of the art: (1) adopt solid-state relay or thyristor zero passage switch to regulate electrical power to realize the object of control temperature by regulating make-to-break ratio, in the manner in which, electrical network is had to low-frequency disturbance, has impact to electrical network, can not transformer load be with again, can not meet the object that low-voltage and high-current extends the electric heating element life-span.This mode is only in the lower occasion employing less demanding with temperature-controlled precision of temperature.
(2) adopt controllable silicon (thyristor) to adopt phase-shift voltage regulating mode to regulate electrical power to reach the object of control temperature, this mode is the mode generally adopted now.But in this mode, power factor (PF) is low, harmonic content is high, large to electric network pollution, under the macroclimate of energy-conserving and environment-protective now, inevitable substitute by new power adjusting device of the present invention.
(3) in order to extend heating element life, reduce cost of equipment maintenance, general all on mode basis (2), be equipped with high-power main frequency furnace transformer, with realize isolation and low-voltage and high-current power, heavy in section is adopted to amass heating element, to extend the electric heating element life-span, adopt high power industrial frequency transformer, the precious resources such as a large amount of copper material, steel must be wasted.
Summary of the invention
The technical problem that the present invention mainly solves how to provide a kind of industrial resistance furnace temperature control Power Conditioning Unit, to overcome the shortcoming of prior art, to reach: 1. without low-frequency disturbance, to electrical network without impact; 2. input power factor is high, and harmonic content is low, and energy-saving effect is remarkable; 3. linear power regulates, and temperature-controlled precision is high; 4. isolating transformer is carried, safe and reliable; 5. volume is little, lightweight, saves a large amount of copper material, the objects such as precious resources such as steel.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of industrial resistance furnace temperature control Power Conditioning Unit, comprise: by three-phase main-frequency AC power input common mode filtering module, uncontrollable rectifier bridge module, High frequency filter module, the high-frequency inversion module that duty ratio is adjustable, high frequency transformer isolation voltage changing module, high-frequency rectification module, each functional module is electrically connected successively, described uncontrollable rectifier bridge module and High frequency filter module are used for changing the three-phase alternating current of input into high voltage direct current, the high-frequency inversion module that described duty ratio is adjustable, high frequency transformer isolation voltage changing module, high-frequency rectification module is used for high voltage direct current being converted to the high frequency pulse dc electricity matched with load.
In a preferred embodiment, ripple coefficient≤6% of the high voltage direct current that described uncontrollable rectifier exports.
In a preferred embodiment, described high-frequency inversion module adopts some insulated gate bipolar transistors, and the duty ratio of described high-frequency inversion module is adjustable, and high voltage direct current is reverse into square wave alternating-current electricity, and the frequency of described square wave alternating-current electricity is far above work frequency.
In a preferred embodiment, wherein said work frequency is 50HZ or 60HZ.
In a preferred embodiment, the square wave alternating voltage of the variable duty ratio adopting fast recovery diode high-frequency isolation transformer to be exported is rectified into the adjustable square-wave pulse direct voltage of duty ratio, powers to the load.
In a preferred embodiment, described square wave alternating voltage rectifier system is bridge rectifier or full-wave rectification.
In a preferred embodiment, the high-frequency inversion frequency in described high-frequency inversion module is 1KHZ-40KHZ.
The invention has the beneficial effects as follows: 1. input power factor is high, harmonic content is low, and energy-saving effect is remarkable; 2. linear power regulates, and accuracy of temperature control is high; 3. input and output isolation, safe and reliable, adaptive load wide ranges, effectively extends heating element life, greatly reduces cost of equipment maintenance; 4. volume is little, lightweight, and saving the precious resources such as a large amount of copper material, steel, is the very promising renewal product of one.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the structural representation of the better case study on implementation of a kind of industrial resistance furnace of the present invention temperature control Power Conditioning Unit one;
Fig. 2 is the theory diagram of the better case study on implementation of a kind of industrial resistance furnace of the present invention temperature control Power Conditioning Unit one;
Fig. 3 is the main circuit schematic diagram of the better case study on implementation of a kind of industrial resistance furnace of the present invention temperature control Power Conditioning Unit one.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-3, a kind of industrial resistance furnace temperature control Power Conditioning Unit is provided in one particular embodiment of the present invention, described industrial resistance furnace temperature control Power Conditioning Unit comprises: three-phase main-frequency AC power input common mode filtering module, uncontrollable rectifier bridge module, High frequency filter module, the high-frequency inversion module that duty ratio is adjustable, high frequency transformer isolation voltage changing module, high-frequency rectification module, each functional module is electrically connected successively, described uncontrollable rectifier bridge module and High frequency filter module are used for changing the three-phase alternating current of input into high voltage direct current, the high-frequency inversion module that described duty ratio is adjustable, high frequency transformer isolation voltage changing module, high-frequency rectification module is used for high voltage direct current being converted to the high frequency pulse dc electricity matched with load.
Ripple coefficient≤6% of the high voltage direct current that described uncontrollable rectifier exports, described high-frequency inversion module adopts some insulated gate bipolar transistors, the duty ratio of described high-frequency inversion module is adjustable, and high voltage direct current is reverse into square wave alternating-current electricity, the frequency of described square wave alternating-current electricity is far above work frequency, and wherein said work frequency is 50HZ or 60HZ.
The square wave alternating voltage of the variable duty ratio adopting fast recovery diode high-frequency isolation transformer to be exported is rectified into the adjustable square-wave pulse direct voltage of duty ratio, and power to the load, described square wave alternating voltage rectifier system is bridge rectifier or full-wave rectification.
High-frequency inversion frequency in described high-frequency inversion module is 1KHZ-40KHZ.
In concrete enforcement, comprise: by three-phase main-frequency AC power input common mode filtering module, uncontrollable rectifier bridge module, High frequency filter module, IGBT frequency-variable module (frequency-variable module comprises full-bridge inverting and semi-bridge inversion), high frequency transformer isolation module, high-frequency rectification module (high-frequency rectification module comprises bridge rectifier and full-wave rectification).Described common mode filtering module, uncontrollable rectifier bridge module and High frequency filter module are used for high voltage direct current corresponding to the three-phase alternating current of input changing into, use for rear class frequency-variable module, described IGBT frequency-variable module, high frequency transformer isolation module and high-frequency rectification module, above-mentioned high voltage direct current is converted to isolate square-wave pulse direct current with the low pressure of load adaptation, ripple coefficient≤6% of described high voltage direct current.
Between uncontrollable rectifier bridge and IGBT inverter bridge, be provided with High frequency filter module, IGBT inverter bridge exports and is connected with high-frequency isolation transformer, and high-frequency isolation transformer is secondary is provided with high-frequency rectification module, so that the square-wave pulse direct current providing duty ratio adjustable to load.
High-frequency inversion frequency f in described high-frequency inversion module is far above power frequency 50HZ or 60HZ.General 1KHZ≤f≤40KHZ, is generally about 20HKZ, is supplied to the square-wave pulse direct current being generally adjustable about the 40KHZ of duty ratio of load
Preferably, adopt up-to-date power electronics insulated gate bipolar transistor IGBT, adopt pwm power regulation technology, adopt up-to-date power electronics control technology, concrete technical scheme is as follows:
First three-phase main-frequency AC power (three-phase AC380V or three-phase AC220V), pass through common mode filtering, input to three-phase and do not control silicon rectification bridge, convert the high voltage direct current of ripple coefficient≤6% to, be reverse into the high-frequency ac square-wave voltage of about frequency 20KHz again by IGBT by corresponding high frequency transformer isolated buck rectification transduce high frequency square-wave pulse direct voltage again, then export to load.
Therefore, the present invention has the following advantages:
1. input power factor is high, and harmonic content is low, and energy-saving effect is remarkable; 2. linear power regulates, and accuracy of temperature control is high; 3. input and output isolation, safe and reliable, adaptive load wide ranges, effectively extends heating element life, greatly reduces cost of equipment maintenance; 4. volume is little, lightweight, and saving the precious resources such as a large amount of copper material, steel, is the very promising renewal product of one.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (7)
1. an industrial resistance furnace temperature control Power Conditioning Unit, it is characterized in that, comprise: by three-phase main-frequency AC power input common mode filtering module, uncontrollable rectifier bridge module, High frequency filter module, the high-frequency inversion module that duty ratio is adjustable, high frequency transformer isolation voltage changing module, high-frequency rectification module, each functional module is electrically connected successively, described uncontrollable rectifier bridge module and High frequency filter module are used for changing the three-phase alternating current of input into high voltage direct current, the high-frequency inversion module that described duty ratio is adjustable, high frequency transformer isolation voltage changing module, high-frequency rectification module is used for high voltage direct current being converted to the high frequency pulse dc electricity matched with load.
2. industrial resistance furnace temperature control Power Conditioning Unit according to claim 1, is characterized in that, ripple coefficient≤6% of the high voltage direct current that described uncontrollable rectifier exports.
3. industrial resistance furnace temperature control Power Conditioning Unit according to claim 2, it is characterized in that, described high-frequency inversion module adopts some insulated gate bipolar transistors, the duty ratio of described high-frequency inversion module is adjustable, and high voltage direct current is reverse into square wave alternating-current electricity, the frequency of described square wave alternating-current electricity is far above work frequency.
4. industrial resistance furnace temperature control Power Conditioning Unit according to claim 3, is characterized in that, described work frequency is 50HZ or 60HZ.
5. industrial resistance furnace temperature control Power Conditioning Unit according to claim 3, it is characterized in that: the square wave alternating voltage of the variable duty ratio adopting fast recovery diode high-frequency isolation transformer to be exported is rectified into the adjustable square-wave pulse direct voltage of duty ratio, powers to the load.
6. industrial resistance furnace temperature control Power Conditioning Unit according to claim 5, is characterized in that, described square wave alternating voltage rectifier system is bridge rectifier or full-wave rectification.
7. industrial resistance furnace temperature control Power Conditioning Unit according to claim 1, is characterized in that, the high-frequency inversion frequency in described high-frequency inversion module is 1KHZ-40KHZ.
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| CN201510250330.0A CN104852609A (en) | 2015-05-18 | 2015-05-18 | Industrial resistance furnace temperature control power adjustment device |
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| CN201510250330.0A CN104852609A (en) | 2015-05-18 | 2015-05-18 | Industrial resistance furnace temperature control power adjustment device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486101A (en) * | 2016-01-19 | 2016-04-13 | 河南三特炉业科技有限公司 | Controllable inversion high-temperature furnace |
| CN108322061A (en) * | 2018-03-14 | 2018-07-24 | 苏州市申浦电源设备厂 | A kind of industrial resistance furnace temperature control PCU Power Conditioning Unit |
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| CN101510732A (en) * | 2009-04-03 | 2009-08-19 | 桂林狮达机电技术工程有限公司 | Control method for electron beam punching machine acceleration high-voltage power supply and power supply device |
| CN201880600U (en) * | 2010-11-25 | 2011-06-29 | 杭州天明电子有限公司 | High-frequency and high-voltage power supply for electric precipitator |
| CN204304821U (en) * | 2014-11-28 | 2015-04-29 | 扬州博尔特电气技术有限公司 | A kind of intelligentized module combined high power digital electroplating power supply |
| CN205004959U (en) * | 2015-05-18 | 2016-01-27 | 苏州市申浦电源设备厂 | Industry resistance furnace control by temperature change frequency control device |
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2015
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101510732A (en) * | 2009-04-03 | 2009-08-19 | 桂林狮达机电技术工程有限公司 | Control method for electron beam punching machine acceleration high-voltage power supply and power supply device |
| CN201880600U (en) * | 2010-11-25 | 2011-06-29 | 杭州天明电子有限公司 | High-frequency and high-voltage power supply for electric precipitator |
| CN204304821U (en) * | 2014-11-28 | 2015-04-29 | 扬州博尔特电气技术有限公司 | A kind of intelligentized module combined high power digital electroplating power supply |
| CN205004959U (en) * | 2015-05-18 | 2016-01-27 | 苏州市申浦电源设备厂 | Industry resistance furnace control by temperature change frequency control device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486101A (en) * | 2016-01-19 | 2016-04-13 | 河南三特炉业科技有限公司 | Controllable inversion high-temperature furnace |
| CN108322061A (en) * | 2018-03-14 | 2018-07-24 | 苏州市申浦电源设备厂 | A kind of industrial resistance furnace temperature control PCU Power Conditioning Unit |
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Application publication date: 20150819 |