CN219260146U - Nonferrous metal local annealing control system - Google Patents
Nonferrous metal local annealing control system Download PDFInfo
- Publication number
- CN219260146U CN219260146U CN202320721359.2U CN202320721359U CN219260146U CN 219260146 U CN219260146 U CN 219260146U CN 202320721359 U CN202320721359 U CN 202320721359U CN 219260146 U CN219260146 U CN 219260146U
- Authority
- CN
- China
- Prior art keywords
- contactor
- temperature
- fan
- control system
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Control Of Heat Treatment Processes (AREA)
Abstract
The nonferrous metal local annealing control system comprises a temperature sensor, a temperature controller, a cycle controller, a frequency converter, a contactor KM1, a contactor KM2 and a button unit; the button unit comprises a heating start button and a fan start button; the heating start button is sequentially connected with a normally closed temperature control switch WK1 and a contactor KM1 of the temperature controller in series; the fan starting button is connected with a coil of the contactor KM 2; the temperature sensor is connected with the temperature controller, and the output end of the temperature controller is connected with the input end of the cycle controller; the frequency controller is connected with a bidirectional thyristor, and the bidirectional thyristor is connected with the regulating end of the heater; the bidirectional thyristor is also connected with the main contact of the contactor KM1, the frequency converter is connected with the main contact of the contactor KM2, and the output end of the frequency converter is connected with the fan. On one hand, the utility model has accurate temperature control, so that the local annealing efficiency of the workpiece is better; on the other hand, the safety coefficient can be greatly improved.
Description
Technical Field
The utility model relates to nonferrous metal local annealing equipment, in particular to a nonferrous metal local annealing control system.
Background
The existing nonferrous metal local annealing is basically integral annealing, for example, a workpiece is placed in an annealing furnace to carry out integral heating annealing, however, some workpieces do not need integral annealing, only partial annealing of the workpiece is needed, and the workpiece cannot be integrally placed in the annealing furnace. The existing local annealing equipment mainly adopts a nitrate furnace, so that a workpiece is always heated in a salt solution, and therefore, the local annealing equipment has the advantages of high heating speed and uniform temperature, and meanwhile, a layer of salt film is attached to the surface of the workpiece when the workpiece is discharged from the furnace, so that the effect of preventing the surface of the workpiece from oxidation and decarburization is achieved. However, the nitrate furnace has the defects of high pollution, high loss, corrosiveness and the like, and can cause damage to the body of operators. The control system of the nitrate furnace mainly comprises a conventional electric appliance protection circuit, a temperature controller for PID regulation of the heater, a set of overtemperature alarm system independent of temperature control and an independent low liquid level alarm system, and a plurality of interlocking interfaces are provided so as to be interlocked with other devices such as a pump, a flow (pressure) switch and the like, thereby ensuring that a medium with a certain flow flows when the heater heats and ensuring the safety of the system. However, the control system can only aim at the nitrate furnace, and the application designs a local annealing device heated by hot air circulation, so that the control system which is suitable for the application needs to be designed to replace the traditional nitrate furnace.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide a nonferrous metal local annealing control system with simple circuit connection structure and accurate temperature control.
The technical scheme of the utility model is as follows: the nonferrous metal local annealing control system comprises a temperature sensor, a temperature controller, a cycle controller, a frequency converter, a contactor KM1, a contactor KM2 and a button unit; the button unit comprises a heating start button and a fan start button; the heating start button is sequentially connected with a normally closed temperature control switch WK1 and a contactor KM1 of the temperature controller in series; the fan starting button is connected with a coil of the contactor KM 2; the temperature sensor is connected with the temperature controller, and the output end of the temperature controller is connected with the input end of the cycle controller; the frequency controller is connected with a bidirectional thyristor, and the bidirectional thyristor is connected with the regulating end of the heater; the bidirectional thyristor is also connected with the main contact of the contactor KM1, the frequency converter is connected with the main contact of the contactor KM2, and the output end of the frequency converter is connected with the fan.
Further, the control system also comprises an isolating switch and a power switch, wherein the isolating switch and the power switch are both connected to the main line of the live wire.
Further, the control system also comprises an indicator light unit, wherein the indicator light unit comprises a heating on indicator light, a heating off indicator light, a fan on indicator light and a fan off indicator light; the heating switch indicator lamp is connected with a normally open contact KM1-1 of the contactor KM1, the heating switch indicator lamp is connected with a normally closed contact KM1-2 of the contactor KM1, the fan switch indicator lamp is connected with a normally open contact KM2-1 of the contactor KM2, the fan switch indicator lamp is connected with a normally closed contact KM2-2 of the contactor KM2, and all the connecting circuits are connected between a power switch SQ1 and a zero line to form a control loop which is arranged in parallel.
Further, the control system also comprises an ultrasonic temperature and sound alarm, wherein the ultrasonic temperature and sound alarm is connected with a normally open temperature control switch WK2 of the temperature controller and is connected between a power switch SQ1 and a zero line.
Further, the coil end of the temperature controller is connected between the power switch SQ1 and the zero line.
Further, one end of the main contact of the contactor KM2 is connected with a disconnecting switch QS, the other end of the main contact is connected with a frequency converter, the disconnecting switch QS is used for controlling the on-off of the frequency converter, and the output end of the frequency converter is connected with a fan.
Further, one end of the main contact of the contactor KM1 is connected with a disconnecting switch QS, the other end of the main contact is connected with a bidirectional thyristor G1, and the output end of the bidirectional thyristor G1 is connected with a heater and is switched on and off through the on-off of the contactor KM 1.
The utility model has the beneficial effects that: on one hand, the heater is adopted for heating, and the temperature controller is matched with the temperature regulation and the power regulation of the bidirectional thyristor, so that the regulation precision is greatly improved, and the temperature control is more accurate; the wind speed of the fan is adjusted through the frequency converter, so that the workpiece is precisely controlled in temperature under the condition of the adaptive hot air circulation, and the local annealing efficiency of the workpiece is better, and the quality is better; on the other hand, through setting up contactor KM1 and temperature controller, cycle controller and bi-directional thyristor cooperation to and through setting up contactor KM2 and fan cooperation, can improve power utilization efficiency greatly, and need not to set up other electrical components such as solid state relay to practice thrift the quantity of electrical components. In addition, through setting up the normally closed temperature detect switch WK1 connection contactor KM1 of temperature control appearance, normally open temperature detect switch WK2 connects the ultrasonic audible and visual alarm ware, can cut off the heater power and report to the police the suggestion when heating exceeds alarm temperature simultaneously, improves factor of safety greatly, guarantees equipment and personnel safety.
Drawings
FIG. 1 is a schematic circuit diagram of an embodiment of the present utility model;
fig. 2 is a schematic circuit diagram of a frequency controller and a frequency converter according to an embodiment of the present utility model.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the specific examples.
As shown in fig. 1 and 2: a nonferrous metal local annealing control system comprises a temperature controller, a frequency converter, a contactor KM1, a contactor KM2, a disconnecting switch QS, a power switch SQ1, a button unit, an indicator light unit, a temperature sensor and an ultrasonic audible and visual alarm. The button unit comprises a heating start button SQ2 and a fan start button SQ3; the indicator light unit comprises a heating on indicator light, a heating off indicator light, a fan on indicator light and a fan off indicator light.
The specific connection relation of the above devices in this embodiment is:
the isolating switch QS and the power switch SQ1 are connected to the live wire L, the other end of the power switch SQ1 is connected with the zero line N through a heating start button SQ2, a normally closed temperature control switch WK1 of the temperature controller and a coil of the contactor KM1, and the coil end of the temperature controller is connected between the power switch SQ1 and the zero line; the other end of the SQ1 is also connected with a zero line N through a fan starting button SQ3 and a coil of the contactor KM 2.
The normally open contact KM1-1 of the contactor KM1 is connected with a heating on indicator lamp, and the normally closed contact KM1-2 of the contactor KM1 is connected with a heating off indicator lamp; the normally open contact KM2-1 of the contactor KM2 is connected with a fan on indicator lamp, and the normally closed contact KM2-2 of the contactor KM2 is connected with a fan off indicator lamp; the normally open temperature control switch WK2 of the temperature controller is connected with an ultrasonic light alarm. All the circuits are connected in parallel between the power switch SQ1 and the zero line.
The temperature sensor is connected with the temperature controller, and the output end of the temperature controller is connected with the input end of the cycle controller; the frequency controller is connected with a bidirectional thyristor G1, and the bidirectional thyristor G1 is connected with the regulating end of the heater; one end of a main contact of the contactor KM1 is connected with a disconnecting switch QS, the other end of the main contact is connected with a bidirectional thyristor G1, and an output end of the bidirectional thyristor G1 is connected with a heater and is switched on and off through on-off of the contactor KM 1. The heater uses a disconnecting switch QS as short circuit and overload protection, uses a contactor KM1 as on-off control, uses the on-off of the contactor KM1 to switch on and off a heater power supply, uses a temperature controller to output a heating output power control signal to adjust a cycle controller, and uses the cycle controller to send a trigger signal to the bidirectional thyristor G1, thereby realizing that the bidirectional thyristor G1 controls an adjusting end of the heater to heat according to requirements.
One end of the main contact of the contactor KM2 is connected with the isolating switch QS, the other end of the main contact is connected with the frequency converter, the isolating switch QS is used for controlling the on-off of the frequency converter, and the output end of the frequency converter is connected with the fan.
In the embodiment, the heater mainly comprises 12 special custom-made heating pipes with 3KW, the heating pipe body is made of heat-resistant titanium alloy, the internal heating element is made of 1400 ℃ high-temperature resistant heating wires in a winding mode, and the heater has the advantages of rapid heating, low energy consumption, long service life and the like. The heating pipes are uniformly distributed and tightly attached to the heat-resistant steel plate in the furnace body, so that heat generated by the heating pipes can be rapidly and uniformly conducted to the plate surface of the furnace body and the space in the furnace body, and under the circulating action of strong convection air, the heating pipes are effectively prevented from being overheated, the service life is prolonged, and the furnace temperature is uniform.
In this embodiment, the temperature sensor is disposed in the heating region of the workpiece.
In the embodiment, the temperature control instrument adopts an intelligent temperature control instrument of Japanese island power FP93, the display precision can reach 0.1 ℃, and the temperature control precision can reach 1 ℃. The automatic control system has the functions of programming a heating process curve, overtemperature alarming, heating anti-dive, PID automatic operation and control output, can automatically calculate according to the temperature difference between the set temperature and the actual heating temperature, and outputs heating output power control signals in different running time, so that heating control is more accurate, and temperature fluctuation is effectively reduced.
In this embodiment, the periodic controller selects the intelligent type of hiyton, and can correspondingly control the output current through the bidirectional thyristor G1 according to the output control signal of the temperature controller, and the opening degree can be adjusted at random between 0% and 100%, so that the heating temperature control is more accurate. Not only reduces the interference impact to the power grid, but also can perform overcurrent short-circuit protection.
In the embodiment, the frequency converter adopts Schneider ATV series, the adjusting range is 20-60HZ, the fan speed adjusting range is wide, and the frequency converter has the functions of phase-missing, undervoltage, motor overload, short circuit, locked-rotor, phase-missing protection and the like of an input power supply.
In this embodiment, the temperature controller, the frequency converter, the contactor KM1, the contactor KM2, the isolating switch QS, the power switch SQ1, the button unit, the indicator light unit, and the ultrasonic audible and visual alarm are all installed on the control panel.
The working principle of the embodiment is as follows: pressing the power switch SQ1 to switch on the power supply; pressing a fan start button SQ3, powering on a coil of a contactor KM2, switching on a main contact of the contactor KM2, starting running a fan, and adjusting the wind speed through a frequency converter to meet the process temperature control requirement; meanwhile, the normally open contact KM2-1 of the contactor KM2 is connected, and a fan on indicator light is turned on to prompt that the fan is running. After the furnace cover is installed according to the model of a workpiece, a heating start button SQ2 is started, a normally closed temperature control switch WK1 of the temperature controller is in a closed state, a coil of a contactor KM1 is electrified, a main contact of the contactor KM1 is connected, a heater starts to work, a temperature sensor detects the temperature in a heating area of the workpiece in real time and sends the temperature to the temperature controller, automatic calculation is performed according to the temperature difference between the set temperature and the actual heating temperature, heating output power control signals in different running time are output to a cycle controller, for example, when the temperature controller starts to work, the temperature difference between the set temperature and the actual heating temperature is large, the output heating control power is 80% -100%, and the temperature difference is output for 0-30% in hours; the cycle controller adjusts power according to the heating output power control signal, and the output current is controlled through the bidirectional thyristor G1 to perform power adjustment on the heater. After the coil of the contactor KM1 is powered on, a normally open contact KM1-1 of the contactor KM1 is closed, and a heating-on indicator lamp is turned on. After the workpiece is heated to the target temperature, the workpiece enters Cheng Ju of the furnace body through a jack of the furnace cover, and the lower part of the workpiece is locally annealed under the hot air circulation of a fan; after annealing, the heating start button SQ2 and the fan start button SQ3 are closed, and the workpiece is discharged. In addition, when the heater heating exceeds the alarm temperature, the normally open temperature control switch WK2 of the temperature controller is closed, the ultrasonic alarm gives an alarm, and the normally closed temperature control switch of the temperature controller is opened, the contactor KM1 is opened, and the heater is opened.
In conclusion, the temperature control device adopts the heater for heating, and is matched with the temperature control device and the temperature and power adjustment of the bidirectional thyristor, so that the adjustment precision is greatly improved, and the temperature control is more accurate; the wind speed of the fan is adjusted through the frequency converter, so that the workpiece is precisely controlled in temperature under the condition of the adaptive hot air circulation, and the local annealing efficiency of the workpiece is better, and the quality is better; on the other hand, through setting up contactor KM1 and temperature controller, cycle controller and bi-directional thyristor cooperation to and through setting up contactor KM2 and fan cooperation, can improve power utilization efficiency greatly, and need not to set up other electrical components such as solid state relay to practice thrift the quantity of electrical components. In addition, through setting up the normally closed temperature detect switch WK1 connection contactor KM1 of temperature control appearance, normally open temperature detect switch WK2 connects the ultrasonic audible and visual alarm ware, can cut off the heater power and report to the police the suggestion when heating exceeds alarm temperature simultaneously, improves factor of safety greatly, guarantees equipment and personnel safety.
Claims (7)
1. The nonferrous metal local annealing control system is characterized by comprising a temperature sensor, a temperature controller, a frequency converter, a contactor KM1, a contactor KM2 and a button unit; the button unit comprises a heating start button and a fan start button; the heating start button is sequentially connected with a normally closed temperature control switch WK1 and a contactor KM1 of the temperature controller in series; the fan starting button is connected with a coil of the contactor KM 2; the temperature sensor is connected with the temperature controller, and the output end of the temperature controller is connected with the input end of the cycle controller; the frequency controller is connected with a bidirectional thyristor, and the bidirectional thyristor is connected with the regulating end of the heater; the bidirectional thyristor is also connected with the main contact of the contactor KM1, the frequency converter is connected with the main contact of the contactor KM2, and the output end of the frequency converter is connected with the fan.
2. The nonferrous metal local annealing control system of claim 1, wherein the control system further comprises a disconnector and a power switch, both connected to the main line of the hot line.
3. The non-ferrous metal partial annealing control system of claim 2, further comprising an indicator light unit including a heat on indicator light, a heat off indicator light, a fan on indicator light, and a fan off indicator light; the heating switch indicator lamp is connected with a normally open contact KM1-1 of the contactor KM1, the heating switch indicator lamp is connected with a normally closed contact KM1-2 of the contactor KM1, the fan switch indicator lamp is connected with a normally open contact KM2-1 of the contactor KM2, the fan switch indicator lamp is connected with a normally closed contact KM2-2 of the contactor KM2, and all the connecting circuits are connected between a power switch SQ1 and a zero line to form a control loop which is arranged in parallel.
4. The nonferrous metal local annealing control system according to claim 2, wherein the control system further comprises an ultrasonic alarm connected to a normally open temperature control switch WK2 of the temperature controller and connected between the power switch SQ1 and the zero line.
5. The nonferrous metal local annealing control system of claim 2, wherein the coil end of the temperature controller is connected between a power switch SQ1 and a zero line.
6. The nonferrous metal local annealing control system according to claim 2, wherein one end of the main contact of the contactor KM2 is connected with a disconnecting switch QS, the other end is connected with a frequency converter, the frequency converter is used for controlling on-off of the frequency converter, and the output end of the frequency converter is connected with a fan.
7. The nonferrous metal local annealing control system according to claim 2, wherein one end of the main contact of the contactor KM1 is connected with a disconnecting switch QS, the other end is connected with a triac G1, and the output end of the triac G1 is connected with a heater and the heater is turned on and off by the on-off of the contactor KM 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320721359.2U CN219260146U (en) | 2023-04-04 | 2023-04-04 | Nonferrous metal local annealing control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320721359.2U CN219260146U (en) | 2023-04-04 | 2023-04-04 | Nonferrous metal local annealing control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219260146U true CN219260146U (en) | 2023-06-27 |
Family
ID=86865671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320721359.2U Active CN219260146U (en) | 2023-04-04 | 2023-04-04 | Nonferrous metal local annealing control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219260146U (en) |
-
2023
- 2023-04-04 CN CN202320721359.2U patent/CN219260146U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103175237B (en) | Microwave oven and self-adaptive power output control method thereof | |
| CN105423513B (en) | Power continuously adjustabe electric heating system and its control method | |
| CN105953359A (en) | Electric heating structure and air conditioner compressor starting system and method | |
| CN107238207B (en) | Control method of gas water heater and gas water heater | |
| CN219260146U (en) | Nonferrous metal local annealing control system | |
| CN108415486A (en) | A kind of dynamic regulating method of high-field electrode boiler power | |
| CN111351228A (en) | Wall-mounted furnace and control method for rapid temperature rise of wall-mounted furnace | |
| CN202419899U (en) | Electric air heater | |
| CN2891034Y (en) | Automatic temperature control device | |
| CN111442328A (en) | Electric heating equipment and control method thereof | |
| CN211406327U (en) | Electric heating device for chute of aluminum-zinc-plated premelting pot | |
| CN204787198U (en) | Frequency conversion heating water storage type electric water heater | |
| CN108489105B (en) | Power control method for electric wall-hung furnace | |
| CN208544275U (en) | A kind of intelligent electric power locomotive heater | |
| CN112984564A (en) | Energy-saving environment-friendly integrated stove | |
| CN214470048U (en) | Temperature control system of zinc melting electric furnace | |
| CN215725032U (en) | Intelligent intermediate frequency gold melting furnace | |
| CN205893354U (en) | Orientation silicon steel heating furnace control circuit | |
| CN205606657U (en) | But energy -conservation remote control's electromagnetism stove | |
| CN220673949U (en) | Heating circuit, heater and heating system | |
| CN211345881U (en) | Temperature control switch of water boiler | |
| CN216048314U (en) | Instant electric water heater | |
| CN219433221U (en) | Stepless regulation variable frequency type steam generator | |
| CN105682260B (en) | A kind of computer heating control and police instruction circuit stage by stage | |
| CN211011950U (en) | Temperature controller for heat accumulating type heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |