CN104936325A - Double-frequency power supply switcher used in induction heating equipment - Google Patents
Double-frequency power supply switcher used in induction heating equipment Download PDFInfo
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- CN104936325A CN104936325A CN201410107369.2A CN201410107369A CN104936325A CN 104936325 A CN104936325 A CN 104936325A CN 201410107369 A CN201410107369 A CN 201410107369A CN 104936325 A CN104936325 A CN 104936325A
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Abstract
The invention provides a double-frequency power supply switcher used in induction heating equipment. The power supply switcher comprises a switcher cabinet. Two sets of sub-switchers are arranged in the switcher cabinet. Each set of sub-switcher is formed by two monomer switchers. The monomer switcher comprises a pedestal, a cylinder, a contactor and two front and back connection pole plates. The contactor is connected to a cylinder piston rod. The two connection pole plates are overlaid and are separated by an insulating plate. The two connection pole plates are a hollow structure. Each connection pole plate is provided with a cooling water joint. A groove is arranged between upper and lower ends of the front connection pole plate. The groove and the contactor are arranged correspondingly. Upper and lower ends of the groove are provided with contact points correspondingly. Upper and lower ends of the back connection pole plate are straight-through plates. A position on the pedestal, which corresponds to the contactor, is provided with a stroke switch. The four monomer switchers with a same structure are installed together so as to form the double-frequency power supply switcher. Switching between double-frequency power supplies can be rapidly and accurately realized and usage is stable and reliable.
Description
Technical field
The present invention relates to power supply unit power transfer device, particularly relate to a kind of for the dual frequency power supplies switch in induction heating equipment.
Background technology
At present, in the large gear integral quenching course of processing, most producer still continues to use carburizing and quenching technology, and carburizing quenching process energy consumption is large, the production cycle long, required manpower is many, process consistency is difficult to ensure.Though existing induction heat treatment technology can overcome the above-mentioned defect of carburizing and quenching, induction heating wants to replace carburizing and quenching technology completely just must rise to double frequency induction single-frequency impewdance matching.
In dual-frequency quenching apparatus, the intermediate frequency that power supply provides or superaudio electric current, arrive transformer through parallel capacitor, finally send into inductor by transformer secondary coil.In operating process, need the requirement of power frequency needed for load to provide the electric current of corresponding frequencies for it, namely carry out electrical source exchange, to meet the technological requirement of workpiece different parts.Power transfer device is exactly the key device this field power supply unit carrying out electrical source exchange, and the quality of its design directly has influence on the Stability and dependability of Power supply, affects to the greatest extent the performance of whole equipment.At present, a kind of switching device shifter reliably is not also had effectively can be applied in dual frequency power supplies in induction heating field.
Summary of the invention
For making the switching of dual frequency power supplies stable, reliable, the present invention proposes a kind of for the dual frequency power supplies switch in induction heating equipment.
For this reason, technical scheme of the present invention is: for the dual frequency power supplies switch in induction heating equipment, comprise switch cabinet, it is characterized in that: described switch cabinet is built with two cover point switchs, and often cover point switch is made up of the monomer switch that two structures are identical; Described monomer switch comprises base, cylinder, contact, front connection pole plate, rear connection pole plate; Cylinder is fixed on base one end, and contact is connected on cylinder piston rod; Front connection pole plate with after be connected pole plate and be fixed on the base other end, two pieces connect pole and add setting and centre insulation board separates, and described two connect pole plates is hollow structure, connects on pole plate be provided with a warter connection at every block; Connect before described between the upper and lower two ends of pole plate and be provided with a groove, groove is corresponding with described contact to be arranged, and groove upper and lower two ends correspondence is provided with contact, and the two ends up and down of described rear connection pole plate are straight-through plate; Described base is also provided with travel switch with contact correspondence position.
During use, prepare intermediate frequency and the superaudio load of two cover correspondences according to workpiece size and inductor shape, dual frequency power supplies and inductor couple together and form power supply major loop by the two ends two cover point switchs in a dual frequency power supplies switch being connected to respectively load.During quenching machine work, electric control system controls the cylinder action in dual frequency power supplies switch on four monomer switchs, makes intermediate frequency (or superaudio) load be linked in major loop; Then electric control system controls power initiation, power inverter part sends the voltage waveform of a row frequency from high frequency attenuation to low frequency, the voltage fed back according to detection signal electric wire judges whether the intrinsic parallel resonance frequency arriving load, just according to this frequency starting of oscillation after power detecting goes out the intrinsic parallel resonance frequency of load, flow through intermediate frequency (or superaudio) electric current in inductor, now mainly a certain position of workpiece is heated; Be heated to power cutoff after certain hour, electric control system controls two dual frequency power supplies switchs and superaudio (or intermediate frequency) load is switched to major loop, power initiation, superaudio (or intermediate frequency) electric current can be flow through according in identical mechanism inductor, at this moment mainly another position of workpiece is heated, and cools and namely form more satisfactory quench-hardened case after heating certain hour.
Beneficial effect:
The present invention, a dual frequency power supplies switch is formed by being contained in a switch cabinet by monomer switch identical for four structures, during use by this switch wherein two monomer switchs be connected with one end of load, other two monomer switchs are connected with the other end of load; According to dpdt double-pole double-throw (DPDT) principle, the travel switch control cylinder action be provided with by monomer switch, accesses major loop by different loads, makes the electric current producing different frequency in inductor, meets the requirement of same workpiece different parts double frequency heating with this.This switch changes original Non-follow control into automatic control, makes the switching that it fast, accurately realizes between dual frequency power supplies, and uses stable, reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of monomer switch in the present invention;
Fig. 2 is the circuit theory diagrams of the present invention when using on quenching machine;
Number in the figure is: 1, base; 2, cylinder; 3, contact; 4, front connection pole plate; 5, rear connection pole plate; 6, insulation board; 7, travel switch; 8, warter connection;
A1 is capacitor one; A2 is transformer one; B1 is capacitor two; B2 is transformer two; D is intermediate frequency load; E is superaudio load; F1 is dual frequency power supplies switch one; F2 is dual frequency power supplies switch two.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, a kind of for the dual frequency power supplies switch in induction heating equipment, comprise switch cabinet, (namely as shown in Figure 2 in described switch cabinet, be provided with two covers side by side divides switch, dual frequency power supplies switch one F1 and dual frequency power supplies switch two F2), often cover point switch is made up of the monomer switch that two structures are identical; Described monomer switch comprises base 1, cylinder 2, contact 3, front connection pole plate 4 and rear connection pole plate 5, and cylinder 2 is fixed on one end of base 1, and contact 3 is arranged on cylinder piston rod; Front connection pole plate 4 with after be connected pole plate 5 and be fixed on the base other end, two pieces connect pole and add setting and centre teflon insulation plate separates; Front connection pole plate 4 with after be connected pole plate 5 and be hollow structure, connecting on pole plate at every block and be provided with a warter connection 8, being cooled connecting pole plate by input cooling water in use procedure; What connect pole plate 4 before described is provided with a groove up and down between two ends, described groove is corresponding with described contact 3 to be arranged, groove upper and lower two ends correspondence is provided with contact, the break-make at these upper and lower two ends of connection pole plate is controlled by contact 3, the two ends up and down of described rear connection pole plate 5 are straight-through plate, do not have the connecting and disconnecting of circuit; Position corresponding with the contact 3 that cylinder piston rod connects on described base 1 is provided with travel switch 7, by the action of travel switch control cylinder, controls the break-make of circuit in this switch with this.
As shown in Figure 2, during use, prepare the intermediate frequency load D of a set of correspondence and a set of superaudio load E(intermediate frequency load D respectively according to workpiece size and inductor shape to be made up of capacitor one A1 and transformer one A2, superaudio load E is made up of capacitor two B1 and transformer two B2); Then between load with inverter circuit, be connected dual frequency power supplies switch one F1, between load with inductor, be connected dual frequency power supplies switch two F2, form quenching machine power supply major loop.
Wherein, jointly be connected connecting pole plate before a monomer switch in dual frequency power supplies switch one F1 with one end of inverter circuit with the rear upper end being connected pole plate, its front connection pole plate is connected with the two ends of capacitor A1 in intermediate frequency load D respectively with the rear lower end being connected pole plate; Jointly be connected connecting pole plate before another monomer switch in dual frequency power supplies switch one F1 with the other end of described inverter circuit with the rear upper end being connected pole plate, its front connection pole plate is connected with the two ends of capacitor B1 in superaudio load E respectively with the rear lower end being connected pole plate.Then be jointly connected connecting pole plate before a monomer switch in dual frequency power supplies switch two F2 with one end of inductor with the rear upper end being connected pole plate, its front connection pole plate is connected with the two ends of transformer A2 in intermediate frequency load D respectively with the rear lower end being connected pole plate; Jointly be connected connecting pole plate before another monomer switch in dual frequency power supplies switch two F2 with the other end of described inductor with the rear upper end being connected pole plate, its front connection pole plate is connected with the two ends of transformer B2 in superaudio load E respectively with the rear lower end being connected pole plate.
During lathe work, by the cylinder action on four monomer switchs in the dual frequency power supplies switch of electric control system control load two ends, intermediate frequency load is made to be linked in major loop; Then electric control system controls power initiation, power inverter part sends the voltage waveform of a row frequency from high frequency attenuation to low frequency, the voltage fed back according to detection signal electric wire judges whether the intrinsic parallel resonance frequency arriving load, just according to this frequency starting of oscillation after power detecting goes out the intrinsic parallel resonance frequency of load, flow through electric current of intermediate frequency in inductor, now mainly gear root is heated; Be heated to power cutoff after certain hour, electric control system controls two dual frequency power supplies switchs and superaudio load is switched to major loop, power initiation, superaudio electric current can be flow through according in identical mechanism inductor, at this moment mainly gear top is heated, and cools and namely form more satisfactory quench-hardened case after heating certain hour.
The present invention, a dual frequency power supplies switch is formed by being contained in a switch cabinet by monomer switch identical for four structures, during use by this switch wherein two monomer switchs be connected with one end of load, other two monomer switchs are connected with the other end of load, according to dpdt double-pole double-throw (DPDT) principle, the travel switch control cylinder action be provided with by monomer switch, different loads is accessed major loop, make the electric current producing different frequency in inductor, meet the requirement of same workpiece different parts double frequency heating with this.This switch changes original Non-follow control into automatic control, makes the switching that it fast, accurately realizes between dual frequency power supplies, and uses stable, reliable.
Claims (1)
1. for the dual frequency power supplies switch in induction heating equipment, comprise switch cabinet, it is characterized in that: described switch cabinet is built with two cover point switchs, and often cover point switch is made up of the monomer switch that two structures are identical; Described monomer switch comprises base, cylinder, contact, front connection pole plate, rear connection pole plate; Cylinder is fixed on base one end, and contact is connected on cylinder piston rod; Front connection pole plate with after be connected pole plate and be fixed on the base other end, two pieces connect pole and add setting and centre insulation board separates, and described two connect pole plates is hollow structure, connects on pole plate be provided with a warter connection at every block; Connect before described between the upper and lower two ends of pole plate and be provided with a groove, groove is corresponding with described contact to be arranged, and groove upper and lower two ends correspondence is provided with contact, and the two ends up and down of described rear connection pole plate are straight-through plate; Described base is also provided with travel switch with contact correspondence position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410107369.2A CN104936325A (en) | 2014-03-21 | 2014-03-21 | Double-frequency power supply switcher used in induction heating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410107369.2A CN104936325A (en) | 2014-03-21 | 2014-03-21 | Double-frequency power supply switcher used in induction heating equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104936325A true CN104936325A (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410107369.2A Pending CN104936325A (en) | 2014-03-21 | 2014-03-21 | Double-frequency power supply switcher used in induction heating equipment |
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| CN (1) | CN104936325A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113122686A (en) * | 2021-04-16 | 2021-07-16 | 东北大学 | Synchronous induction heating device for gear and using method |
-
2014
- 2014-03-21 CN CN201410107369.2A patent/CN104936325A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113122686A (en) * | 2021-04-16 | 2021-07-16 | 东北大学 | Synchronous induction heating device for gear and using method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150923 |