CN215416354U - Control system of copper continuous casting line frequency furnace - Google Patents
Control system of copper continuous casting line frequency furnace Download PDFInfo
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- CN215416354U CN215416354U CN202023292102.5U CN202023292102U CN215416354U CN 215416354 U CN215416354 U CN 215416354U CN 202023292102 U CN202023292102 U CN 202023292102U CN 215416354 U CN215416354 U CN 215416354U
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Abstract
The utility model relates to a control system of a copper continuous casting power frequency furnace, which comprises a PLC (programmable logic controller) and a protection unit which are electrically connected, and further comprises a man-machine interface and an automatic capacitance compensation circuit; the human-computer interface and the dynamic compensation capacitor are respectively connected with the PLC; the human-computer interface is provided with a storage interface and used for storing abnormal conditions or worker operation information in the PLC. The utility model combines PLC, human-computer interface and capacitance automatic compensation control, the power factor is kept above 0.96 at any time, and the utility model has various protection functions, traceability in the operation process and great convenience for fault maintenance and equipment management.
Description
Technical Field
The utility model relates to a control system of a copper continuous casting line frequency furnace.
Background
In the early control system of the power frequency furnace of the copper continuous casting line, the control is generally a conventional control circuit which adopts a system consisting of a traditional relay control circuit and a temperature control instrument, and the control system has the defects of complex circuit, high failure rate and inconvenient maintenance. Later along with the popularization of PLC, general control system has also changed into the mode of PLC and intelligent instrument combination control, though compare with the control mode of previous generation, has the advantage that the wiring is simple, reliable and stable, scalability is good, but along with scientific and technological progress, its structure and stability need further optimization and promotion.
In addition, in the copper continuous casting line frequency furnace, the size of the cross section in the furnace is changed due to different alloy varieties and furnace ages, and the three-phase induced current of the furnace is deviated due to the influence of various reasons such as temperature, so that the power factor is reduced, and at the moment, capacitors added on two sides of the coil are required to be switched to change the power factor. Usually, manual switching is used, so that experience and technology are needed, and timeliness cannot be met.
Therefore, the technical problem to be solved is to further optimize the control system of the industrial frequency furnace of the copper continuous casting line.
Disclosure of Invention
In order to solve the problems, a control system of the copper continuous casting line power frequency furnace, which is combined with a PLC and a human-computer interface, is provided to further simplify the structure and improve the stable and reliable performance and the power factor.
The utility model is realized by the following technical scheme:
the control system of the copper continuous casting power frequency furnace comprises a PLC (programmable logic controller) and a protection unit which are electrically connected, and the system also comprises a man-machine interface and an automatic capacitance compensation circuit; the human-computer interface and the dynamic compensation capacitor are respectively connected with the PLC; the human-computer interface is provided with a storage interface and used for storing abnormal conditions or worker operation information in the PLC.
The copper continuous casting line frequency furnace control system, wherein: the system further comprises an auto-coupling voltage regulator, wherein the auto-coupling voltage regulator is connected with the main incoming line and the PLC.
The copper continuous casting line frequency furnace control system, wherein: the protection unit is connected with a port of the PLC and comprises an overcurrent protection circuit, a water shortage and overtemperature protection circuit, a coil water temperature itineration detection circuit, a contactor closing protection circuit, a voltage overrun protection circuit and a misoperation and power failure alarm circuit. And the contactor on-off protection circuit is used for detecting the disconnection and blocking faults of the contactor. Each circuit is provided with an audible and visual alarm and a human-computer interface alarm.
Has the advantages that:
the utility model combines the PLC and the man-machine interface, and has the following characteristics:
1. by adopting the automatic compensation control of the capacitor, the power factor is kept above 0.96 at any time;
2. the system has the advantages that the system has a perfect protection function, and not only has the traditional overcurrent, water shortage and overtemperature protection functions, but also has various protections such as coil water temperature itinerant detection, contactor closing, voltage overrun, misoperation, power failure alarm and the like, when in protection action, not only is an audible and visual alarm, but also can be displayed in a rolling manner in an alarm bar on a human-computer interface, so that the system is clear at a glance;
3. the traceability of the operation process is that when abnormal conditions occur or workers operate, the abnormal conditions are stored in the PLC, so that a tracing source is added for fault treatment and quality management, and great convenience is brought to fault maintenance and equipment management.
Drawings
FIG. 1 is a schematic block diagram of the structure of a control system of a power frequency furnace of a copper continuous casting line according to the present invention;
FIG. 2 is a schematic diagram of an auto-coupling voltage regulator of the control system of the power frequency furnace of the copper continuous casting line of the present invention;
FIG. 3 is a schematic diagram of an automatic capacitance compensation circuit of the control system of the industrial frequency furnace of the copper continuous casting line of the utility model.
Detailed Description
As shown in fig. 1 to 3, the control system of the power frequency furnace of the copper continuous casting line comprises a PLC1, a human-computer interface 2, an auto-coupling voltage regulator 3, a dynamic compensation capacitor 4 and a protection unit 5 which are electrically connected.
The human-computer interface 2 is connected with the PLC 1; the human-machine interface 2 is provided with a storage interface for storing abnormal conditions or worker operation information in the PLC1, and storing the abnormal conditions or the worker operation information in the PLC1 when the abnormal conditions occur or the worker operates;
the autotransformer 3 is connected with the main incoming line and the PLC 1;
the dynamic compensation capacitor 4 is connected with the PLC1 and is controlled by the PLC 1; the principle of the automatic capacitance compensation circuit of the dynamic compensation capacitor is shown in fig. 3.
The protection unit 5 is connected with the port of the PLC1 and comprises an overcurrent protection circuit 51, a water shortage and overtemperature protection circuit 52, a coil water temperature itinerant detection circuit 53, a contactor closing protection circuit 54, a voltage overrun protection circuit 55 and a misoperation and power failure alarm circuit 56; the contactor on-off protection circuit 54 is used for detecting faults such as disconnection, jamming and the like of the contactor; each protection circuit is provided with an audible and visual alarm and a human-computer interface alarm, when the protection is triggered, the audible and visual alarm is given, and meanwhile, the PLC sends an instruction to display the alarm in a rolling mode in the human-computer interface in an alarm bar mode.
The utility model has the following characteristics:
1. by adopting the automatic compensation control of the capacitor, the power factor is kept above 0.96 at any time;
2. the system has the advantages that the system has a perfect protection function, and not only has the traditional overcurrent, water shortage and overtemperature protection functions, but also has various protections such as coil water temperature itinerant detection, contactor closing, voltage overrun, misoperation, power failure alarm and the like, when in protection action, not only is an audible and visual alarm, but also can be displayed in a rolling manner in an alarm bar on a touch screen, and is clear at a glance;
3. the traceability of the operation process is that when an abnormal condition occurs or a worker operates, the abnormal condition or the worker can be stored in the PLC, so that compared with an alarm log and an operation log, a tracing source is added for fault treatment and quality management, and great convenience is brought to fault maintenance and equipment management.
Claims (4)
1. The utility model provides a copper continuous casting line frequency furnace control system, includes PLC and the protection unit of electricity connection, its characterized in that: the system also comprises a human-computer interface and a dynamic compensation capacitor; the human-computer interface and the dynamic compensation capacitor are respectively connected with the PLC;
the system further comprises an auto-coupling voltage regulator, wherein the auto-coupling voltage regulator is connected with the main incoming line and the PLC.
2. The control system of the copper continuous casting line frequency furnace of claim 1, characterized in that: the protection unit comprises an overcurrent protection circuit, a water shortage and overtemperature protection circuit, a coil water temperature itinerant detection circuit, a contactor closing protection circuit, a voltage overrun protection circuit and a misoperation and power failure alarm circuit.
3. The control system of the copper continuous casting line frequency furnace of claim 2, wherein: and the contactor on-off protection circuit is used for detecting the disconnection and blocking faults of the contactor.
4. The control system of the copper continuous casting line frequency furnace of claim 2, wherein: each circuit is provided with an audible and visual alarm and a human-computer interface alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023292102.5U CN215416354U (en) | 2020-12-30 | 2020-12-30 | Control system of copper continuous casting line frequency furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023292102.5U CN215416354U (en) | 2020-12-30 | 2020-12-30 | Control system of copper continuous casting line frequency furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215416354U true CN215416354U (en) | 2022-01-04 |
Family
ID=79660662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023292102.5U Active CN215416354U (en) | 2020-12-30 | 2020-12-30 | Control system of copper continuous casting line frequency furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215416354U (en) |
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2020
- 2020-12-30 CN CN202023292102.5U patent/CN215416354U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Power frequency furnace control system for copper continuous casting Effective date of registration: 20220621 Granted publication date: 20220104 Pledgee: Bank of China Limited by Share Ltd. Shiyan branch Pledgor: HUBEI JINGYI HIGH PRECISION COPPER PLASTICS & STRIPS Co.,Ltd. Registration number: Y2022980008419 |