CN220380237U - Electrical control system for improving heat treatment process performance - Google Patents
Electrical control system for improving heat treatment process performance Download PDFInfo
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- CN220380237U CN220380237U CN202222814463.4U CN202222814463U CN220380237U CN 220380237 U CN220380237 U CN 220380237U CN 202222814463 U CN202222814463 U CN 202222814463U CN 220380237 U CN220380237 U CN 220380237U
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000010438 heat treatment Methods 0.000 title claims abstract description 14
- 230000006698 induction Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- 238000000819 phase cycle Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model relates to an electric control system for improving the heat treatment process performance, which comprises a main circuit and a control circuit, wherein the main circuit comprises circuit breakers QF1 and QF2 and a control transformer TC1, the control circuit comprises an indication circuit, a star-shaped and triangle-shaped series contact circuit, a main control board power supply and a main control board integrated circuit, the interference of higher harmonics generated in the working process on transformers and other relays of the control circuit is avoided, the control transformers are often heated and burnt, the intermediate frequency induction furnace cannot normally heat treat rolled materials and the technical process performance cannot meet the requirements to cause reworking, after improvement, the interference of intermediate frequency ripple on the control circuit is reduced, and the process performance of the heat treatment rolled materials is effectively ensured and improved.
Description
Technical Field
The utility model relates to an electrical control system for improving heat treatment process performance, in particular to an electrical control system for improving heat treatment process performance, which is used for avoiding the interference of higher harmonic waves generated in the working process on a transformer and other relays of a control circuit when a medium frequency induction furnace is used for heat treatment of rolled stock, and avoiding the influence of higher harmonic waves on the control circuit, wherein the transformer is often heated and burnt, and the medium frequency induction furnace cannot normally heat treat the rolled stock and technical process performance cannot meet requirements to cause reworking.
Background
The intermediate frequency furnace is a device for converting the power frequency 50HZ alternating current into an intermediate frequency power supply, is matched with an inductor coil and a compensation capacitor, and is applied to equipment heated by an electromagnetic induction principle. The method is characterized in that a large amount of higher harmonics are generated in the working process, the harmonic generation is mainly caused by nonlinear load, a filter reactor is added to filter direct current output by rectification in the aspect of harmonic treatment of a main circuit of a frequency converter of an intermediate frequency induction furnace at present, current ripple is reduced, stable working of an inverter is facilitated, a control power supply of a relay control circuit is supplied by a medium frequency process transformer, the medium frequency higher harmonics generate interference to the control circuit, the control transformer is often heated and burned, the intermediate frequency induction furnace cannot normally heat treat rolled materials, the technical process performance cannot meet the requirements, and reworking is caused; therefore, the control circuit power supply electric control system of the relay of the intermediate frequency induction furnace is required to be improved, the stable operation of the intermediate frequency furnace is ensured, and the process performance of heat treatment of rolled materials is ensured and improved.
Disclosure of Invention
The utility model aims to overcome the defects in the prior control circuit design, avoid the interference of higher harmonic waves generated in the working process on a control transformer and a relay after the medium frequency is started, ensure the stable operation of equipment, and improve the primary verification qualification rate of heat treatment products and the heat treatment process performance.
In order to achieve the above effects, the technical scheme adopted by the utility model is as follows: an electrical control system for improving the performance of a heat treatment process comprises a main circuit and a control circuit.
The main circuit comprises a main power supply breaker QF1 connected with a three-phase incoming line power supply, a control circuit power supply breaker QF2 and a first control transformer TC1 for providing power for the control circuit, wherein the breakers QF1 and QF2 are closed, and the first control transformer TC1 provides 220V alternating current power for the control circuit;
the control circuit comprises an indication circuit for medium frequency starting, a contact circuit for medium frequency star and angle series connection, a main control board power supply and a main control board integrated circuit, wherein a first output end L1 of a secondary coil and a second output end L2 of the secondary coil of the first control transformer TC1 provide 220V power for the indication circuit, the contact circuit for medium frequency star and angle series connection and the main control board power supply;
in an indication circuit of the control circuit, after the intermediate frequency control power supply start-stop contactor is electrified, the control power supply is turned on to indicate that the normally open contact J1 is closed, and the control power supply is turned on to indicate; after the coils of the intermediate frequency star-shaped main circuit contactors Q1A-C are powered on, normally open contacts of the intermediate frequency star-shaped main circuit contactors are closed, and star-shaped rectifier bridge closing indication is carried out; the coil of the intermediate frequency angular main circuit contactor Q2A-C is electrified, the normally open contact is closed, and the angular rectifier bridge is indicated to be closed; after the intermediate frequency starting and stopping contactor is started, the intermediate frequency starting normally open contact J2 is closed, and an intermediate frequency starting on instruction is sent; after the coil of the star-shaped quick-fusing contactor J8 is powered on, the normally open contact is closed, and the star-shaped quick-fusing indication is switched on; after the coil of the angular quick-fusing contactor J9 is electrified, the normally open contact is closed, and the angular quick-fusing indication is switched on; when the main board breaks down, the contactor J of the main board output fault contactor is electrified and closed, and the normally open contact is closed, and the main board output fault sends out an indication;
the primary coil 220V power supply of the second control transformer TC2 of the control circuit is provided by a first output end L1 of the secondary coil and a second output end L2 of the secondary coil, and voltages of alternating current 17V output by the first secondary coil end and the second secondary coil end of the control circuit are provided for the main control board integrated circuit and are connected with a main control board first terminal of the main control board integrated circuit and a main control board second terminal of the main control board integrated circuit; the integrated circuit terminals 1G 1-1G 6 and 2G 1-2G 6 of the main control board are control electrodes of the thyristors, and 1K 1-1K 6 and 2K 1-2K 6 are cathodes of the thyristors; the first output end L1 of the secondary coil and the contact point of the main board output fault contactor are fault output normally open contacts; the third terminal of the main control board and the fourth terminal of the main control board are all starting signal ports of intermediate frequency DC20V, Y is an intermediate frequency star-shaped current feedback signal, and delta is an intermediate frequency angular current feedback signal; the fifth terminal of the main control board is a power port of the inverter, the sixth terminal of the main control board and the seventh terminal of the main control board are both inverted output ends, the eighth terminal of the main control board is a GND given grounding end, the ninth terminal of the main control board is a given voltage of intermediate frequency power, and the tenth terminal of the main control board is a maximum DC output of 15V.
Further, the power supply of the control circuit electrical control system is provided by a power line distribution cabinet, is separated from the power supply of the original intermediate frequency process transformer, and then the first control transformer TC1 BK-500VA and the transformer of 380V/220V supply power to the control circuit and the intermediate frequency main board integrated circuit board.
Further, the model of the total power circuit breaker QF1 of the main circuit is CM2-225L/3300 200A, the model of the breaker QF2 of the control circuit power is CM1-125L/3300 100A, the model of the first control transformer TC1 for providing the control circuit power is BK-500VA,380V/220V, the model of the second control transformer TC2 is a main control board power for providing the power for the intermediate frequency main board integrated circuit, and the model is BK-200 220V/17V.
The utility model has the following advantages: (1) The power supply of the control circuit electrical control system is provided by a power line, is separated from the power supply of the original intermediate frequency process transformer, and is provided by a first control transformer TC1 BK-500VA and 380V/220V transformer for the control circuit and the intermediate frequency main board integrated circuit board, so that the control circuit and the intermediate frequency main board integrated circuit board are not interfered by high harmonic waves. (2) The control transformer and the relay are not burnt out, spare part cost is saved, intermediate frequency equipment is stable in operation, and heat treatment process performance is further improved.
Drawings
Fig. 1 is a main circuit of an electric control system.
Fig. 2 is a control circuit of the electronic control system.
In the figure, QF1 is a total power circuit breaker of a three-phase incoming line power supply, and the model is as follows: CM2-225L/3300 200A; QF2 is the power breaker that plays first control transformer TC1 control switch effect, and the model is: CM1-125L/3300 100A; TC1 is the first control transformer that control circuit provided power, and the model is: BK-500 380V/220V; the second control transformer TC2 is a main control board power supply for providing power for the intermediate frequency main board integrated circuit, and the model is BK-200 220V/17V; j1 is an intermediate frequency control power supply start-stop contactor, an intermediate frequency star-shaped main circuit contactor is used for controlling a power supply to be connected, Q1A-C is an intermediate frequency star-shaped main circuit contactor, a normally open contact is provided for a Y-shaped intermediate frequency rectifier bridge closing main contactor, Q2A-C is an intermediate frequency angle-shaped main circuit contactor, a normally open contact is provided for a delta-shaped intermediate frequency rectifier bridge closing main contactor, J2 is an intermediate frequency start-stop contactor, a normally open contact is provided for an intermediate frequency start-up contactor, J8 is a star-shaped fast-fusing contactor, a normally open contact is provided for a Y-shaped fast-fusing contactor, J9 is an angle-shaped fast-fusing contactor, a normally open contact is provided for a delta-shaped fast-fusing contactor, J is a main board output fault contactor, a normally open contact is provided for a main board output fault contactor, Q1A, Q1B, Q C is a normally open contact of a Y-shaped contactor, Q2A, Q2B, Q C delta-shaped contactor, 1G 1-1G 6 and 2G6 are control poles of a thyristor, 2K 1-2K 6 are thyristors, L1-227 and L1-227 are intermediate frequency output fault contacts and a delta-3V 3 feedback signal (a feedback signal of a normal current of 220 f); 011 and 012 are main control board alternating current 17V power input terminals, the terminal 100 is the power of an inverter, the first terminal 101 and the second terminal 102 are the output ends of the inverter, the third terminal 015 is GND given ground, the fourth terminal 046 is intermediate frequency power given voltage, the DC 0-15V and 047 is maximum DC output 15V, and the numbers 205, 206, 207, 221, 222, 223, 224, 225, 226 and 227 in FIG. 2 are the circuit numbers of the joints of the elements in the circuit.
The specific embodiment is as follows:
as shown in fig. 1 and 2, an electrical control system for improving the performance of a heat treatment process includes a main circuit (fig. 1) and a control circuit (fig. 2).
In fig. 1, a main power switch of a QF1 electric control system is provided, wherein the input end of the QF1 is A, B, C, the wiring phase sequence is A-B-C, the input end is connected with 3-phase 380V50HZ alternating voltage, the output ends are A1, B1 and C1, the wiring phase sequence is A1-B1-C1, and the main power of the system 380V50HZ is controlled to be turned on and off by a power breaker QF 1; QF2 is the control switch of first control transformer TC1, and its input is A1, B1, C1, and wiring phase sequence is A1-B1-C1, and the output is A11, B11, C11, and wiring phase sequence is A11-B11-C11, and wherein A11, C11 two-phase access first control transformer TC 1's primary coil provides a 380V alternating current power supply, and first control transformer TC 1's secondary output is 220V alternating current voltage.
The control circuit of fig. 2 includes an indication circuit, a Y-shaped contactor series contact circuit and a delta-shaped contactor series contact circuit, a main control board control power supply, and a main control board integrated board circuit.
In the control circuit, the voltage of 220V output by the secondary coil of the first control transformer TC1 is respectively connected with an indication circuit, a Y-shaped contactor series contact circuit (an intermediate frequency star-shaped series contact circuit) and a delta-shaped contactor series contact circuit (angular series contact electricity), a main control board control power supply and a main control board integrated board circuit through the two ends of the first output end L1 of the secondary coil and the second output end L2 of the secondary coil;
in an indication circuit of the control circuit, a first output end L1 of the secondary coil and a second output end L2 of the secondary coil provide 220V power for the indication circuit, J1 is an intermediate frequency control power supply start-stop contactor, after the intermediate frequency control power supply start-stop contactor is powered on, a normally open contact J1 is closed, and the control power supply is switched on for indication; Q1A-C is an intermediate frequency star-shaped main circuit contactor, and after a coil of the intermediate frequency star-shaped main circuit contactor is electrified, a normally open contact of the intermediate frequency star-shaped main circuit contactor is closed, and a star-shaped rectifier bridge is indicated to be closed; Q2A-C is an intermediate frequency angular main circuit contactor, a coil of the intermediate frequency angular main circuit contactor is electrified, a normally open contact of the intermediate frequency angular main circuit contactor is closed, and an angular rectifier bridge is indicated to be closed; j2 is an intermediate frequency start-stop contactor, and after intermediate frequency start, a normally open contact J2 of the intermediate frequency start-stop contactor is closed, and an intermediate frequency start-up is conducted; j8 is a star-shaped quick-fusing contactor, and after a coil of the star-shaped quick-fusing contactor is powered on, a normally open contact of the star-shaped quick-fusing contactor is closed, and a star-shaped quick-fusing instruction is turned on; j9 is an angular quick-fusing contactor, wherein after a coil of the angular quick-fusing contactor is electrified, a normally open contact of the angular quick-fusing contactor is closed, and an angular quick-fusing instruction is conducted; j is a main board output fault contactor, when the main board breaks down, the contactor J is electrified and closed, and a normally open contact of the contactor is closed, and the main board output fault gives out an indication.
The primary coil 220V power supply of the second control transformer TC2 of the control circuit is provided by a first output end L1 of the secondary coil and a second output end L2 of the secondary coil, and the alternating voltage of which the secondary output is 17V is provided to a first terminal 011 of a main control board and a second terminal 012 of the main control board integrated circuit; the integrated circuit terminals 1G 1-1G 6 and 2G 1-2G 6 of the main control board are control electrodes of the thyristors, and 1K 1-1K 6 and 2K 1-2K 6 are cathodes of the thyristors; the first output end L1 of the secondary coil and the contact 227 of the main board output fault contactor are normally open contacts for fault output;
the third terminal 033 of the main control board and the fourth terminal 034 of the main control board are all starting signal ports of intermediate frequency DC20V, Y (If) is an intermediate frequency star current feedback signal, and delta (If) is an intermediate frequency angle current feedback signal; the first terminal 011 and the second terminal 012 of the main control board are the input terminals of the main control board alternating current 17V power supply, the fifth terminal 100 of the main control board is the power supply of the inverter, the sixth terminal 101 and the seventh terminal 102 of the main control board are the output ends of the inverter, the eighth terminal 015 of the main control board is the given grounding end of GND, the ninth terminal 46 of the main control board is the given voltage of the intermediate frequency power, DC 0-15V, and the tenth terminal 047 of the main control board is the maximum DC output 15V.
After the intermediate frequency Y-shaped main contactor is electrified, the first normally open contact Q1A, the second normally open contact Q1B and the third normally open contact Q1C of the intermediate frequency Y-shaped contactor series contact circuit of the control circuit are closed to be connected with the series contact circuit, so that preparation is made for intermediate frequency Y-shaped starting; after the intermediate frequency delta-shaped main contactor is powered on, the fourth normally open contact Q2A, the fifth normally open contact Q2B and the sixth normally open contact Q2C of the intermediate frequency delta-shaped contactor are closed to complete the series contact circuit, so that preparation is made for intermediate frequency delta-shaped starting.
Claims (3)
1. An electric control system for improving the performance of a heat treatment process, which comprises a main circuit and a control circuit, and is characterized in that: the main circuit comprises a main power supply breaker QF1 connected with a three-phase incoming line power supply, a control circuit power supply breaker QF2 and a control transformer TC1 for providing power for the control circuit, wherein the breakers QF1 and QF2 are closed, and the control transformer TC1 provides 220V alternating current power for the control circuit; the control circuit comprises an indication circuit for medium frequency starting, a contact circuit for medium frequency star and angular series connection, a main control board power supply and a main control board integrated circuit, wherein a first output end L1 of a secondary coil and a second output end L2 of the secondary coil of the control transformer TC1 provide 220V power for the indication circuit, the contact circuit for medium frequency star and angular series connection and the main control board power supply; in an indication circuit of the control circuit, after the intermediate frequency control power supply start-stop contactor is electrified, the control power supply is turned on to indicate that the normally open contact J1 is closed, and the control power supply is turned on to indicate; after the coils of the intermediate frequency star-shaped main circuit contactors Q1A-C are powered on, normally open contacts of the intermediate frequency star-shaped main circuit contactors are closed, and star-shaped rectifier bridge closing indication is carried out; the coil of the intermediate frequency angular main circuit contactor Q2A-C is electrified, the normally open contact is closed, and the angular rectifier bridge is indicated to be closed; after the intermediate frequency starting and stopping contactor is started, the intermediate frequency starting normally open contact J2 is closed, and an intermediate frequency starting on instruction is sent; after the coil of the star-shaped quick-fusing contactor J8 is powered on, the normally open contact is closed, and the star-shaped quick-fusing indication is switched on; after the coil of the angular quick-fusing contactor J9 is electrified, the normally open contact is closed, and the angular quick-fusing indication is switched on; when the main board breaks down, the contactor J of the main board output fault contactor is electrified and closed, and the normally open contact is closed, and the main board output fault sends out an indication; the primary coil 220V power supply of the main control board power supply TC2 of the control circuit is provided by a first output end L1 of the secondary coil and a second output end L2 of the secondary coil, and voltages of alternating current 17V output by the first secondary coil end and the second secondary coil end of the primary coil are provided for the main control board integrated circuit and are connected with a main control board first terminal (011) of the main control board integrated circuit and a main control board second terminal (012) of the main control board integrated circuit; the integrated circuit terminals 1G 1-1G 6 and 2G 1-2G 6 of the main control board are control electrodes of the thyristors, and 1K 1-1K 6 and 2K 1-2K 6 are cathodes of the thyristors; the first output end L1 of the secondary coil and a contact (227) of the main board output fault contactor are normally open contacts for fault output; the third terminal (033) and the fourth terminal (034) of the main control board are all starting signal ports of intermediate frequency DC20V, Y is an intermediate frequency star current feedback signal, and delta is an intermediate frequency angular current feedback signal; the fifth terminal (100) of the main control board is a power port of the inverter, the sixth terminal (101) of the main control board and the seventh terminal (102) of the main control board are output ends of the inverter, the eighth terminal (015) of the main control board is a GND given grounding end, the ninth terminal (046) of the main control board is given voltage of intermediate frequency power, and the tenth terminal (047) of the main control board is maximum DC output of 15V.
2. An electrical control system for improving thermal processing performance as defined in claim 1, wherein: the power supply of the control circuit electrical control system is provided by a power line distribution cabinet, is separated from the power supply of an original intermediate frequency process transformer, and then the TC1 BK-500VA,380V/220V transformer supplies power to the control circuit and the intermediate frequency main board integrated circuit board.
3. An electrical control system for improving thermal processing performance as defined in claim 1, wherein: the model of a total power supply breaker QF1 of the main circuit is CM2-225L/3300 200A, the model of a breaker QF2 of a control circuit power supply is CM1-125L/3300 100A, the model of a first control transformer TC1 for providing the control circuit power supply is BK-500VA,380V/220V, and a second control transformer TC2 is a main control board power supply for providing the power supply for an intermediate frequency main board integrated circuit, and the model is BK-200 220V/17V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222814463.4U CN220380237U (en) | 2022-10-25 | 2022-10-25 | Electrical control system for improving heat treatment process performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222814463.4U CN220380237U (en) | 2022-10-25 | 2022-10-25 | Electrical control system for improving heat treatment process performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220380237U true CN220380237U (en) | 2024-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222814463.4U Active CN220380237U (en) | 2022-10-25 | 2022-10-25 | Electrical control system for improving heat treatment process performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220380237U (en) |
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2022
- 2022-10-25 CN CN202222814463.4U patent/CN220380237U/en active Active
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