CN204272413U - A kind of electromagnetic induction device for heating of metal workpiece - Google Patents
A kind of electromagnetic induction device for heating of metal workpiece Download PDFInfo
- Publication number
- CN204272413U CN204272413U CN201420808257.5U CN201420808257U CN204272413U CN 204272413 U CN204272413 U CN 204272413U CN 201420808257 U CN201420808257 U CN 201420808257U CN 204272413 U CN204272413 U CN 204272413U
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- China
- Prior art keywords
- heater coil
- full bridge
- bridge inverter
- scr
- cooling water
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Abstract
The utility model discloses a kind of electromagnetic induction device for heating of metal workpiece, the three-phase alternating-current supply comprising control cubicle, capacitor, heater coil and be connected with control cubicle, and described heater coil is in parallel with capacitor; Microcomputer master control borad, inversion pulse excitation transformer and the full bridge inverter containing four groups of SCR is provided with in control cubicle; The control end of microcomputer master control borad is extremely connected with the control of full bridge inverter through inversion pulse transformer; Described heater coil is formed by hollow seamless copper pipe coiled coil, and heater coil one end is provided with inlet wire splicing ear and cooling water inlet, and the other end is provided with outlet splicing ear and cooling water outlet.Described full bridge inverter is provided with cooling water box, is provided with water cavity in cooling water box, and water cavity is provided with water inlet and delivery port, and water inlet is connected aqueduct respectively with water outlet, and aqueduct spirals setting in the form of a ring.This apparatus structure is simple, and firing rate is fast, stable, failure rate is low.
Description
Technical field
The utility model relates to a kind of electromagnetic induction device, is a kind of electromagnetic induction device for heating of metal workpiece specifically.
Background technology
In the manufacture of metal works, quenching is a kind of important treatment step.Quenching can improve hardness and the resistance to wear of metal works, is thus widely used in various work, mould, measurer and requires the part of surface abrasion resistance, as gear, roll, carburized parts etc.In current quenching processing technology, usual employing flame heated parts, this mode of heating not only has waste gas, waste sludge discharge, and most of heat is dispersed in environment in heating process, low-temperature receiver utilance is low, and workpiece in heating process always with fuel and oxide interface thereof, foreign matter is easily made to invade, thus affect workpiece quality, this mode of heating also needs whole workpiece to heat, and cannot do localized heating, energy ezpenditure is large, and overall heating causes workpiece deformation large, affects finished workpart quality.
Utility model content
The purpose of this utility model is for the deficiency in above-mentioned technology, provides a kind of electromagnetic induction device for heating of metal workpiece, and this apparatus structure is simple, and firing rate is fast, stable, failure rate is low.
The technical scheme that the utility model realizes above-mentioned purpose employing is: a kind of electromagnetic induction device for heating of metal workpiece, the three-phase alternating-current supply comprising control cubicle, capacitor, heater coil and be connected with control cubicle, described heater coil is in parallel with capacitor; Microcomputer master control borad, inversion pulse excitation transformer and the full bridge inverter containing four groups of SCR is provided with in control cubicle; Capacitor and heater coil one end after connecing connect with first group of SCR and second group SCR parallel with one another in full bridge inverter, and capacitor and heater coil the other end after connecing connect with the 3rd group of SCR and a 4th group SCR parallel with one another in full bridge inverter; Microcomputer master control borad and full bridge inverter are powered by three-phase alternating-current supply, and the control end of microcomputer master control borad is extremely connected with the control of full bridge inverter through inversion pulse transformer; Described heater coil is formed by hollow seamless copper pipe coiled coil, and heater coil one end is provided with inlet wire splicing ear and cooling water inlet, and the other end is provided with outlet splicing ear and cooling water outlet.Described full bridge inverter is provided with cooling water box, is provided with water cavity in cooling water box, and water cavity is provided with water inlet and delivery port, and water inlet is connected aqueduct respectively with water outlet, and aqueduct spirals setting in the form of a ring.
In described full bridge inverter, often organize in SCR and be equipped with two SCR mutually connected.
The water inlet of described cooling water box is provided with flow sensor, and the output of flow sensor feeds back test side with the lack of water of microcomputer master control borad and is connected.
Voltage of intermediate frequency instrument transformer is also provided with in described capacitor and the parallel circuits of heater coil; Also be provided with intermediate frequency frequency sweep transducer, excessively flow sensor and hypersensor in microcomputer master control borad, one group of output of voltage of intermediate frequency instrument transformer is connected with the intermediate frequency frequency sweep transducer of microcomputer master control borad, excessively the feedback signal test side of flow sensor and hypersensor respectively.
the beneficial effects of the utility model
In full bridge inverter in the utility model, four symmetrical break-make work of brachium pontis, often organize the SCR being equipped with two series connection in SCR, it reduce the drop requirements of SCR, improve the stability of system.In order to protect SCR, microcomputer mainboard is provided with overcurrent, overvoltage analysis and response interrupt circuit, once overcurrent, overvoltage phenomenon breaking circuit immediately, prevents unexpected generation.In addition, in the technical program, SCR, heater coil are provided with water cooling plant, and adopt cooling water to cool, this set-up mode cooling effectiveness is high, greatly improves the stability of equipment.The heating device circuit structure of the technical program is simple, and firing rate is fast, and stable, failure rate is low, from motion tracking resonant circuit natural frequency, can adjust the power of alternating current as required, adjusts easy and adjusting range is large.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is electrical block diagram of the present utility model;
Fig. 3 is the set-up mode schematic diagram of full bridge inverter in the utility model;
Fig. 4 is the connected mode schematic diagram of the utility model SCR cooling water box;
Fig. 5 is the helical fashion schematic diagram of the aqueduct be connected with cooling water box in the utility model;
fig. 6 is the structural representation of heater coil in the utility model;
Reference numeral: 1, control cubicle, 2, capacitor, 3, heater coil, 4, microcomputer master control borad, 5, inversion pulse excitation transformer, 6, three-phase alternating-current supply, 7, full bridge inverter, 8, inlet wire splicing ear, 9, cooling water inlet 10, outlet splicing ear, 11, cooling water outlet, 12, first group of SCR, 13, second group of SCR, 14, 3rd group of SCR, 15, 4th group of SCR, 16, intermediate frequency frequency sweep transducer, 17, flow sensor, 18, cross flow sensor, 19, hypersensor, 20, cooling water box, 21, water inlet, 22, delivery port, 23, aqueduct.
Embodiment
below in conjunction with the drawings and specific embodiments, the utility model is described further:
For an electromagnetic induction device for heating of metal workpiece, the three-phase alternating-current supply 6 comprising control cubicle 1, capacitor 2, heater coil 3 and be connected with control cubicle 1, described heater coil 3 is in parallel with capacitor 2, microcomputer master control borad 4, inversion pulse excitation transformer 5 and the full bridge inverter 7 containing four groups of SCR is provided with in control cubicle 1, capacitor 2 and heater coil 3 one end after connecing connect with first group of SCR12 and second group SCR13 parallel with one another in full bridge inverter 7, capacitor 2 and heater coil 3 other end after connecing connect with the 3rd group of SCR14 and a 4th group SCR15 parallel with one another in full bridge inverter 7, often organize in SCR the SCR being equipped with two series connection mutually, microcomputer master control borad 4 and full bridge inverter 7 are powered by three-phase alternating-current supply 6, and the control end of microcomputer master control borad 4 is extremely connected through the control of inversion pulse transformer 5 with full bridge inverter 11, described heater coil 3 is formed by hollow seamless copper pipe coiled coil, heater coil 3 one end is provided with inlet wire splicing ear 8 and cooling water inlet 9, the other end is provided with outlet splicing ear 10 and cooling water outlet 11, this type of cooling makes coil directly contact with cooling water, cooling efficiency is high, described full bridge inverter 7 is provided with cooling water box 20, water cavity is provided with in cooling water box 20, water cavity is provided with water inlet 21 and delivery port 22, water inlet 21 is connected aqueduct 23 respectively with delivery port 22 place, aqueduct 23 spirals setting in the form of a ring, water inlet 21 place of described cooling water box 20 is provided with flow sensor 17, the output of flow sensor 17 feeds back test side with the lack of water of microcomputer master control borad 4 and is connected, the water flowing situation of Real-Time Monitoring water cooling plant, prevent unexpected lack of water.
Voltage of intermediate frequency instrument transformer is also provided with in described capacitor 2 and the parallel circuits of heater coil 3; Also be provided with intermediate frequency frequency sweep transducer 16, excessively flow sensor 18 and hypersensor 19 in microcomputer master control borad 4, one group of output of voltage of intermediate frequency instrument transformer is connected with the intermediate frequency frequency sweep transducer 16 of microcomputer master control borad 4, excessively the feedback signal test side of flow sensor 18 and hypersensor 19 respectively.
Microcomputer master control borad 4, except being provided with control and feedback interface, also having phase shortage analysis display, display is analyzed in overvoltage and cross flow analysis Presentation Function.Three phase mains is after controlled rectification, reactance filtering, alternating current is become again through full bridge inverter, in full bridge inverter 7, adopt SCR Zero-voltage soft to start control, start success rate high, without impacting, improve stability and the efficiency of heating surface of load circuit, and simplify circuit composition, reduce failure rate.Microcomputer master control borad 4 is provided with swept-frequency signal feedback test side, from the frequency of motion tracking resonant circuit.The switch of control signal control SCR after driver transformer of microcomputer master control borad 4.The adjustment of power output is realized by the mode of direct current voltage reulation, and for realizing direct current voltage reulation, microcomputer master control borad 4 is also provided with current feedback signal test side, three-phase synchronous signal test side, ensure that the reliable and secure work of controlled rectification.
Claims (4)
1. the electromagnetic induction device for heating of metal workpiece, the three-phase alternating-current supply (6) comprising control cubicle (1), capacitor (2), heater coil (3) and be connected with control cubicle (1), is characterized in that: described heater coil (3) is in parallel with capacitor (2); Microcomputer master control borad (4), inversion pulse excitation transformer (5) and the full bridge inverter (7) containing four groups of SCR is provided with in control cubicle (1); Capacitor (2) and heater coil (3) one end after connecing and first group of SCR(12 parallel with one another in full bridge inverter (7)) and second group of SCR(13) connect, capacitor (2) and heater coil (3) the other end after connecing and the 3rd group of SCR(14 parallel with one another in full bridge inverter (7)) and the 4th group of SCR(15) connect; Microcomputer master control borad (4) and full bridge inverter (7) are by three-phase alternating-current supply (6) power supply, and the control end of microcomputer master control borad (4) is extremely connected through the control of inversion pulse transformer (5) with full bridge inverter (11); Described heater coil (3) is formed by hollow seamless copper pipe coiled coil, heater coil (3) one end is provided with inlet wire splicing ear (8) and cooling water inlet (9), the other end is provided with outlet splicing ear (10) and cooling water outlet (11), described full bridge inverter (7) is provided with cooling water box (20), cooling water box is provided with water cavity in (20), water cavity is provided with water inlet (21) and delivery port (22), water inlet (21) is connected aqueduct (23) respectively with delivery port (22) place, and aqueduct (23) spirals setting in the form of a ring.
2. a kind of electromagnetic induction device for heating of metal workpiece as claimed in claim 1, is characterized in that: in described full bridge inverter (7), often organizes in SCR the SCR being equipped with two series connection mutually.
3. a kind of electromagnetic induction device for heating of metal workpiece as claimed in claim 1, it is characterized in that: water inlet (21) place of described cooling water box (20) is provided with flow sensor (17), the output of flow sensor (17) feeds back test side with the lack of water of microcomputer master control borad (4) and is connected.
4. a kind of electromagnetic induction device for heating of metal workpiece as claimed in claim 1, is characterized in that: be also provided with voltage of intermediate frequency instrument transformer in described capacitor (2) and the parallel circuits of heater coil (3); Also be provided with intermediate frequency frequency sweep transducer (16), excessively flow sensor (18) and hypersensor (19) in microcomputer master control borad (4), one group of output of voltage of intermediate frequency instrument transformer is connected with the intermediate frequency frequency sweep transducer (16) of microcomputer master control borad (4), excessively the feedback signal test side of flow sensor (18) and hypersensor (19) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420808257.5U CN204272413U (en) | 2014-12-19 | 2014-12-19 | A kind of electromagnetic induction device for heating of metal workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420808257.5U CN204272413U (en) | 2014-12-19 | 2014-12-19 | A kind of electromagnetic induction device for heating of metal workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204272413U true CN204272413U (en) | 2015-04-15 |
Family
ID=52807257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420808257.5U Expired - Fee Related CN204272413U (en) | 2014-12-19 | 2014-12-19 | A kind of electromagnetic induction device for heating of metal workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204272413U (en) |
-
2014
- 2014-12-19 CN CN201420808257.5U patent/CN204272413U/en not_active Expired - Fee Related
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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: 20150415 Termination date: 20151219 |
|
| EXPY | Termination of patent right or utility model |