CN202696475U - Temperature adjustment system of intermediate-frequency power supply - Google Patents
Temperature adjustment system of intermediate-frequency power supply Download PDFInfo
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- CN202696475U CN202696475U CN 201220399208 CN201220399208U CN202696475U CN 202696475 U CN202696475 U CN 202696475U CN 201220399208 CN201220399208 CN 201220399208 CN 201220399208 U CN201220399208 U CN 201220399208U CN 202696475 U CN202696475 U CN 202696475U
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- power supply
- frequency power
- intermediate frequency
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Abstract
The utility model provides a temperature adjustment system of an intermediate-frequency power supply. The temperature adjustment system comprises a three-phase power supply input unit, a bridge type rectification unit, a filter unit, an inversion unit, a resonance unit and a micro computer processor, wherein the resonance unit comprises an anti-resonance circuit composed of a capacitor and an inductive coil, a mutual inductor is additionally installed in the resonance unit, and the mutual inductor is connected with the micro computer processor via a feedback unit. The temperature adjustment system of the intermediate-frequency power supply has the advantages that steel pipe heating has not only eddy current but also hysteresis phenomenon, in the process of repeated magnetization of an alternate magnetic field, heat is generated because of magnetic loss, and the intensity of the hysteresis and the eddy current is determined by currents, so that current signals of a resonance capacitor are acquired to change frequency and current, thereby satisfying temperature of pipes with different wall thickness, and achieving effects of saving energy and being highly efficient; and the temperature system is concise in lines, low in the cost and simple in operation.
Description
Technical field
The utility model belongs to the intermediate frequency power supply technical field, especially relates to a kind of intermediate frequency power supply thermoregulating system.
Background technology
Intermediate frequency power supply is a kind of static frequency-conversion device, and three phase worker power is transformed into single phase poaer supply.Strong, applied widely to various adaptive load power, be mainly used in the melting, insulation, sintering, welding, quenching, tempering of various metals, diathermanous, molten metal purification, heat treatment, bend pipe and crystal growth etc.
In existing technology, the major part that hot-expanding steel tube adopts all is permanent power intermediate frequency power supply, the electromagnetic induction heating mode by the CPLD chip controls, namely utilize electric capacity-inductor oscillating to obtain larger electric current, steel pipe and mould serve as inductor iron core, form eddy current, its heat is produced by self, realizes that the heated object steel pipe reaches the temperature required purpose of processing.
Constant-power power source in use, load no matter, all with the power supply maximum power output, that (material is different between 780-820 ℃ yet hot-expanding steel tube is temperature required, different its temperature of technological requirement are difference to some extent), this heating-up temperature is not easy control in operating process, the operative employee is required height, simultaneously also produce reactive loss, waste energy.
Summary of the invention
Problem to be solved in the utility model provides a kind of simple to operate, intermediate frequency power supply thermoregulating system that production efficiency is high, especially is suitable for hot-expanding steel tube.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of intermediate frequency power supply thermoregulating system, comprise the three phase mains input unit that connects successively, the bridge rectifier unit, filter unit, inversion unit and resonant element, also has control connection three phase mains input unit, the bridge rectifier unit, the micro processor of inversion unit, described bridge rectifier unit comprises the three-phase bridge controllable rectifier bridge that is comprised of six rectification thyristors, the controllable type inverter that described inversion unit is comprised of four high speed thyristors, described resonant element comprises the antiresonant circuit that is made of capacitor and inductance coil, add instrument transformer on the described resonant element, described instrument transformer is connected with micro processor by feedback unit; Described feedback unit comprises the potentiometer of wave detector and the series connection of its two ends, and potentiometer is electrically connected with micro processor, and described instrument transformer is connected with wave detector, and described wave detector is to be connected by four diode two-phases.
Further, described instrument transformer hypermutation ratio is 500: 1.
Further, be in series with a direct current ammeter between described bridge rectifier unit and the inversion unit, be parallel with a D.C. voltmeter.
Further, described potentiometer is that potentiometer is adjusted at the inversion angle.
Further, also be parallel with medium frequency voltmeter on the described resonant element.
Advantage and the good effect that the utlity model has are: owing to adopt technique scheme, the steel pipe heating is except eddy current, also has hysteresis, produced magnetic loss in the process of alternating magnetic field remagnetization again and generated heat, the power of magnetic hysteresis and eddy current is decided by electric current, therefore the obtaining current signal changes the height of frequency on resonant capacitance, the size of electric current, satisfy the temperature of different wall pipe, thereby reach the effect of efficient energy-saving, simple in circuits, cost is low, through long term production check, its startability is very superior, and is simple to operate, production efficiency is high.
Description of drawings
Fig. 1 is high-level schematic functional block diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Among the figure:
1, three phase mains input unit 2, bridge rectifier unit 3, filter unit
4, inversion unit 5, resonant element 6, feedback unit
7, micro processor 8, wave detector 9, D.C. voltmeter
10, DC ammeter 11, medium frequency voltmeter
Embodiment
Such as Fig. 1, shown in 2, a kind of intermediate frequency power supply thermoregulating system of the utility model, comprise the three phase mains input unit 1 that connects successively, bridge rectifier unit 2, filter unit 3, inversion unit 4 and resonant element 5, also has control connection three phase mains input unit 1, bridge rectifier unit 2, the micro processor 7 of inversion unit 4, described bridge rectifier unit 2 comprises the three-phase bridge controllable rectifier bridge that is comprised of six rectification thyristors, the controllable type shunt chopper that described inversion unit 4 is comprised of four high speed thyristors, described resonant element 5 comprises the antiresonant circuit that is made of capacitor C and inductance coil L, add instrument transformer PT on the described resonant element 5, described instrument transformer PT is connected connection by feedback unit 6 with micro processor; Described feedback unit 6 comprises potentiometer RP1 and the RP2 of wave detector 8 and the series connection of its two ends, potentiometer RP1 and RP2 are electrically connected with micro processor 7, described instrument transformer PT is connected with wave detector 8, and described wave detector 8 is to be connected by four diode two-phases, and described instrument transformer PT hypermutation ratio is 500: 1; Be in series with a direct current ammeter 10 between described bridge rectifier unit 2 and the inversion unit 4, a D.C. voltmeter 9 in parallel also is parallel with medium frequency voltmeter 11 on the described resonant element 5.
The course of work of this example:
More than an embodiment of the present utility model is had been described in detail, but described content only is preferred embodiment of the present utility model, can not be considered to be used to limiting practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the present utility model.
Claims (5)
1. intermediate frequency power supply thermoregulating system, comprise the three phase mains input unit, bridge rectifier unit, filter unit, inversion unit and the resonant element that connect successively, also have the micro processor of control connection three phase mains input unit, bridge rectifier unit, inversion unit, it is characterized in that:
Described bridge rectifier unit comprises the three-phase bridge controllable rectifier bridge that is comprised of six rectification thyristors, the controllable type inverter that described inversion unit is comprised of four high speed thyristors, described resonant element comprises the antiresonant circuit that is made of capacitor and inductance coil, add instrument transformer on the described resonant element, described instrument transformer is connected with micro processor by feedback unit; Described feedback unit comprises the potentiometer of wave detector and the series connection of its two ends, and potentiometer is electrically connected with micro processor, and described instrument transformer is connected with wave detector, and described wave detector is to be connected by four diode two-phases.
2. intermediate frequency power supply thermoregulating system according to claim 1, it is characterized in that: described instrument transformer hypermutation ratio is 500: 1.
3. intermediate frequency power supply thermoregulating system according to claim 1 is characterized in that: be in series with a direct current ammeter between described bridge rectifier unit and the inversion unit, be parallel with a D.C. voltmeter.
4. intermediate frequency power supply thermoregulating system according to claim 1 is characterized in that: described potentiometer is that potentiometer is adjusted at the inversion angle.
5. intermediate frequency power supply thermoregulating system according to claim 1 is characterized in that: also be parallel with medium frequency voltmeter on the described resonant element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220399208 CN202696475U (en) | 2012-08-13 | 2012-08-13 | Temperature adjustment system of intermediate-frequency power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220399208 CN202696475U (en) | 2012-08-13 | 2012-08-13 | Temperature adjustment system of intermediate-frequency power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202696475U true CN202696475U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220399208 Expired - Fee Related CN202696475U (en) | 2012-08-13 | 2012-08-13 | Temperature adjustment system of intermediate-frequency power supply |
Country Status (1)
| Country | Link |
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| CN (1) | CN202696475U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731043A (en) * | 2013-12-31 | 2014-04-16 | 无锡应达工业有限公司 | Miniature high-frequency heating power source for quenching |
| CN108054927A (en) * | 2017-12-25 | 2018-05-18 | 深圳市英威腾电气股份有限公司 | A kind of automatic seeking frequency method for intermediate frequency power supply |
-
2012
- 2012-08-13 CN CN 201220399208 patent/CN202696475U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731043A (en) * | 2013-12-31 | 2014-04-16 | 无锡应达工业有限公司 | Miniature high-frequency heating power source for quenching |
| CN103731043B (en) * | 2013-12-31 | 2016-07-13 | 无锡应达工业有限公司 | A kind of novel high-frequency heating power supply for quenching |
| CN108054927A (en) * | 2017-12-25 | 2018-05-18 | 深圳市英威腾电气股份有限公司 | A kind of automatic seeking frequency method for intermediate frequency power supply |
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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: 20130123 Termination date: 20160813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |