CN202337812U - Temperature control system for quenching furnace - Google Patents
Temperature control system for quenching furnace Download PDFInfo
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- CN202337812U CN202337812U CN2011203884684U CN201120388468U CN202337812U CN 202337812 U CN202337812 U CN 202337812U CN 2011203884684 U CN2011203884684 U CN 2011203884684U CN 201120388468 U CN201120388468 U CN 201120388468U CN 202337812 U CN202337812 U CN 202337812U
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- temperature control
- control system
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- temperature
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Abstract
The utility model discloses a temperature control system for a quenching furnace. The temperature control system comprises a PLC (programmable logic controller), a temperature sensor and a power adjusting cabinet, wherein the temperature sensor is used for transmitting the temperature data information in the quenching furnace to the PLC; and the PLC is used for controlling a solid state relay in the power adjusting cabinet to trigger signals, so as to switch on/off a plurality of electrical heating elements in the quenching furnace. The temperature control system is characterized in that the PLC is further connected with a touch screen and an industrial computer; and the touch screen is connected with the industrial computer through an RS-232 interface, and is connected with the PLC through an RS-485 interface. Through the adoption of the structural style, the temperature control system has the advantages that the accurate control of temperature is realized through the cooperation of a PC (Personal Computer) and the powerful man-machine interface function of the touch screen, so as to reduce the data cable and the cost by adopting the communication method; and the touch screen is used for realizing the parameter setting of the quenching technique, so as to not only ensure normal work, but also improve the precision of temperature control.
Description
Technical field
The utility model relates to a kind of temperature control system of quenching furnance.
Background technology
Electromechanical integration technology fast development in recent years; Because programmable logic controller (PLC) has compact design, good extendability, cheap price and powerful characteristics such as instruction; Have very strong advantage aspect the switching value control, its application in industrial production more and more widely.Adopted programmable logic controller (PLC) in the temperature control system of the used quenching furnance of tradition, but the Presentation Function of PLC is poor, thus restriction and influenced accurate control to furnace body temperature.
The utility model content
In order to overcome above-mentioned deficiency, the utility model purpose is to provide a kind of temperature control system that can improve the quenching furnance of control accuracy of temperature.
To achieve these goals, the technical scheme below the utility model adopts:
The temperature control system of quenching furnance; Comprise PLC unit, TP and power power regulating cabinet; TP sends the temperature data information in the stove to the PLC unit; Solid state relay triggering signal in the PLC unit control power power regulating cabinet is controlled the break-make of the intravital a plurality of an electric heating element of stove through the PWM mode, and it is characterized in that: said PLC unit also is connected with touch-screen and IPC; Said touch-screen is connected with IPC through RS-232 interface, also is connected with the PLC unit through the RS-485 interface.
Said IPC adopts IPC-610 type IPC.
Said PLC unit adopts the PLC unit of 300 series of Siemens.
Said touch-screen adopts EVIEW MT500 type touch-screen.
The beneficial effect of the utility model: owing to adopt above-mentioned structure formation; The PLC unit also is connected with touch-screen and IPC; And the mode of operation of employing serial communication; So PC, touch-screen and programmable logic controller are combined, make full use of the powerful human interface function of PC and touch-screen, abundant application software and cheap price and come to realize the integrated of management, control jointly, and the data line that this communication modes uses is few, cost is low; Touch-screen is realized the quenching process parameters setting, under the situation that IPC breaks down, still can set quenching process parameters through touch-screen, and practical situation in the stove are kept watch on, and guarantees to produce reliably, carry out incessantly.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done further to specify.
Fig. 1 is the structural representation of the utility model.
Among the figure: 1, PLC unit; 2, TP; 3, power power regulating cabinet; 4, body of heater; 5, an electric heating element; 6, touch-screen; 7, IPC.
Embodiment
As shown in Figure 1; The temperature control system of quenching furnance; Comprise PLC unit 1, TP 2 and power power regulating cabinet 3, TP 2 sends the temperature data information in the stove to PLC unit 1, the solid state relay triggering signal in the PLC unit 1 control power power regulating cabinet 3; Control the break-make of a plurality of an electric heating element 5 in the body of heater 4 through the PWM mode; It is characterized in that: said PLC unit 1 also is connected with touch-screen 6 and IPC 7, and said touch-screen 6 is connected with IPC 7 through RS-232 interface, also is connected with PLC unit 1 through the RS-485 interface.During said RS-232 connects, be most widely used a kind of sata standard interface in the current communication industry.It takes single-ended load mode, and the total load capacitance amount on the RS-232c conveyer line not cotton-padded mattress surpasses 2500pF, and when being 150pF/m (or 125pF/m) as if electric cable capacitance, then the maximum length of conveyer line should not surpass 15m (or 20m).When transmitting line length; Electrical capacity increases, and when data transfer rate was high, the charging and discharging currents of electric capacity increased; To cause the signal weakening of receiving end (load end); When serious in addition signal be beyond recognition, so maximum data transfer rate (baud rate) is limited in 20KBi and is afraid of below (20K baud), so RS-232 is only applicable to the low-speed communication between the local device; During said RS-485 connect, except realizing " point-to-points " communication, Rs-485 can also realize " multi-to-multi " communication, no matter was " point-to-points " communication or " multi-to-multi " communication, and Rs-485 can connect 32 transmitters and 32 receptors simultaneously.Rs-485 needs two terminating resistances to be connected on the two ends (also can not connecing during less than 300 meters at transmitting range) of transmission bus, and its resistance requires the natural impedance that equals to transmit cable.Adopt the Rs-485 interface to realize that " point-to-points " communicate by letter among this paper between Pc machine and the read write line, work in half-duplex basis.
Said IPC adopts IPC-610 type IPC.The IPC-610 IPC: industrial control computer than ordinary PC have stable performance, shock resistance is strong, reliable (it can be for a long time, steady operation) incessantly.What native system was selected for use is to grind magnificent IPc-610 IPC, and this type of type working reliability is high and have 14 expansion slots, has certain expansion capacity, helps the further expansion of system function.
Said PLC unit adopts the PLC unit of 300 series of Siemens.The boot sequence of its system, the real-time sampling of temperature signal, the output of solid state relay triggering signal, soaking time clock and add up and abnormal conditions warning and processing etc.System compares actual sample value and set(ting)value; Send wave for power element (power regulating cabinet) according to relative error according to certain control algolithm; Through having or not of control solid state relay triggering signal, control the break-make of electrical heating element electric current, realize temperature control to quenching furnance.
Said touch-screen adopts EVIEW MT500 type touch-screen.This touch-screen has characteristics such as powerful, that the control appearance design is attractive in appearance, easy to use, configuration software is easy to learn, is fit to very much the requirement of modern industry robotization, becomes one of modernization industry control imperative equipment day by day.The major function that general man-machine interface has has: 1. PL (PLc I, O demonstration, internal node demonstration, multistage PL etc.); 2. switch (position state type switch, Multi-band switch, switch window switch etc.); 3. various dynamic charts (excellent figure, instrument, moving meter, trend map etc.); 4. data presentation (data presentation, ASCII demonstration, literal demonstration etc.); 5. abnormal alarm (alarm display, horse race lamp demonstration, incident demonstration etc.); 7. static (straight line, circle, rectangle, the literal etc. of showing.
Principle of work: this system adopts PLC unit and IPC (band touch-screen) to form two level computer Control for Kiln Temperature system.The solid state relay triggering signal of PLC control power regulating cabinet is regulated the electrical heating element current switching in 11 districts through the PWM mode, realizes that furnace temperature controls automatically.IPC is monitored in real time, writes down, is inquired about the quenching technology process and printing etc.To carry out real-time communication between touch-screen, IPC and the PLC three in system's control process; Touch-screen and IPC will obtain the data that PLC gathers in real time on the one hand; And display it, IPC or touch-screen also will send control command to PLC in real time simultaneously.The PLC unit also is connected with touch-screen and IPC; Said touch-screen is connected with IPC through RS-232 interface; Also be connected with the PLC unit through the RS-485 interface, form the mode of operation of serial communication, so-called " serial communication " is meant that equipment room uses ground of two single data SWs (possibly also need wire) to transmit; Each data all occupy one regular time length, the data line that this communication modes uses is few, cost is low; The power power regulating cabinet adopts solid state relay, and electrical heating element is realized break make ratio control, has eliminated phase shift triggering control and has produced the pollution of harmonic wave to electrical network; Because solid state relay triggers thyristor element and zero passage detection, time scale adjusting, overcurrent pulse blocking, three-phase pulse control sets and is integral, integrated level is high, and Installation and Debugging are convenient, and reliable operation is simplified the power regulating cabinet structure greatly; Touch-screen is realized the quenching process parameters setting, under the situation that IPC breaks down, still can set quenching process parameters through touch-screen, and practical situation in the stove are kept watch on, and guarantees to produce reliably, carry out incessantly.
Claims (1)
1. the temperature control system of a quenching furnance; Comprise PLC unit, TP and power power regulating cabinet; TP sends the temperature data information in the stove to the PLC unit, and the PLC unit is controlled the solid state relay triggering signal in the power power regulating cabinet, controls the break-make of the intravital a plurality of an electric heating element of stove through the PWM mode; It is characterized in that: said PLC unit also is connected with touch-screen and IPC; Said touch-screen is connected with IPC through RS-232 interface, also is connected with the PLC unit through the RS-485 interface, and said IPC adopts IPC-610 type IPC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203884684U CN202337812U (en) | 2011-10-12 | 2011-10-12 | Temperature control system for quenching furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203884684U CN202337812U (en) | 2011-10-12 | 2011-10-12 | Temperature control system for quenching furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202337812U true CN202337812U (en) | 2012-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203884684U Expired - Fee Related CN202337812U (en) | 2011-10-12 | 2011-10-12 | Temperature control system for quenching furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN202337812U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575114A (en) * | 2013-10-31 | 2014-02-12 | 钦州华成自控设备有限公司 | System for automatically controlling Nixing ceramic transmutation |
| CN103823489A (en) * | 2012-11-16 | 2014-05-28 | 丹阳市江南工业炉有限公司 | Temperature control system for industrial furnace |
| CN104154767A (en) * | 2014-08-11 | 2014-11-19 | 湖北大别山窑炉产业研究设计院有限公司 | Temperature measurement and control system for plate-type SCR denitration catalyst calcining furnace |
| CN104197706A (en) * | 2014-09-22 | 2014-12-10 | 随州泰华电子科技有限公司 | High-temperature tunnel kiln for production of tuning fork crystal |
-
2011
- 2011-10-12 CN CN2011203884684U patent/CN202337812U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103823489A (en) * | 2012-11-16 | 2014-05-28 | 丹阳市江南工业炉有限公司 | Temperature control system for industrial furnace |
| CN103575114A (en) * | 2013-10-31 | 2014-02-12 | 钦州华成自控设备有限公司 | System for automatically controlling Nixing ceramic transmutation |
| CN103575114B (en) * | 2013-10-31 | 2016-04-20 | 钦州华成自控设备有限公司 | Nixing pottery transmutation automatic control system |
| CN104154767A (en) * | 2014-08-11 | 2014-11-19 | 湖北大别山窑炉产业研究设计院有限公司 | Temperature measurement and control system for plate-type SCR denitration catalyst calcining furnace |
| CN104197706A (en) * | 2014-09-22 | 2014-12-10 | 随州泰华电子科技有限公司 | High-temperature tunnel kiln for production of tuning fork crystal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120718 Termination date: 20121012 |