CN201681289U - Automatic control system of high-temperature shaft kiln - Google Patents
Automatic control system of high-temperature shaft kiln Download PDFInfo
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- CN201681289U CN201681289U CN2010201017647U CN201020101764U CN201681289U CN 201681289 U CN201681289 U CN 201681289U CN 2010201017647 U CN2010201017647 U CN 2010201017647U CN 201020101764 U CN201020101764 U CN 201020101764U CN 201681289 U CN201681289 U CN 201681289U
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- 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
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The utility model relates to an automatic control system of a high-temperature shaft kiln, which belongs to the technical field of automatic control of kilns. The automatic control system includes an equipment control circuit and further includes a PLC (programmable logic controller) and an industrial control machine, wherein the industrial control machine is in communication connection with the communication terminal of the PLC through a network cable, and a control output terminal of the PLC is connected with a controlled terminal of the equipment control circuit. Therefore, automatic control programs of the PLC can be programmed according to the process of the high-temperature shaft kiln to realize the automatic control of the high-temperature shaft kiln; and main thermodynamics parameters of the high-temperature shaft kiln can be directly input on the interface of the industrial control machine to realize the thermodynamic-regulation full-automatic control, to eliminate the human factors' influences, to ensure the stability of forging quality, to improve the efficiency and to reduce the labor intensity.
Description
Technical field
The utility model relates to a kind of automation control system, and especially a kind of high temperature vertical kiln automation control system belongs to the kiln technical field of automatic control.
Background technology
High temperature vertical kiln is present a kind of advanced person's kiln type in the world, is mainly used in grain magnesite and rauhkalk.High temperature vertical kiln generally adopts heavy oil, diesel oil or rock gas to act as a fuel, and its calcining heat can reach 1800-1900 ℃, the technical economical index advanced person, and hear rate is low, and the system that utilizes of kiln can be up to 6-10t/m
3D.The grog physical and chemical index of calcining is good, and quality is even, is desirable high temperature vertical kiln calciner.
But at present domestic high temperature vertical kiln automatic control level is very low, shows to lack automatic control function, and the automatic control rate is low, and field apparatus is manual manipulation topworks substantially; The interlock protection device of equipment is few, and function singleness causes production security low; The production run human factor is many, the production control instability, and making the quality instability of calcination product influences the normal operation of factory.
The utility model content
The purpose of this utility model is: the problem at above prior art exists proposes a kind of high temperature vertical kiln automation control system of Long-distance Control, thereby guarantees stable calcination product.
In order to reach above purpose, high temperature vertical kiln automation control system of the present utility model comprises equipment control circuit, also comprise PLC and industrial computer, described industrial computer is connected with the communication terminal communication of PLC by Ethernet, and the control output end of described PLC is connected with the controlled end of equipment control circuit.
Like this, can write PLC robotization control program according to the technology of high temperature vertical kiln, realize the robotization control of high temperature vertical kiln, and the main thermal parameter of high temperature vertical kiln can directly be imported on the interface of industrial computer, realize the full-automation control that the thermal technology regulates, eliminate artificial factor, guarantee the stable of product burning quality, raise the efficiency, reduce labor intensity.
The utility model further improves: described equipment control circuit comprises main circuit and control loop, and the power end of described main circuit connects drive motor behind switch, contactor; In the described control loop, action button and PLC remote auto are operated controlled end respectively after two selecting sides of selector switch are in parallel, connect with the control coil of main circuit contact device again.
The utility model further improves: described PLC has the input and output circuit, and the signal input part of described PLC input circuit connects the signal feedback end of the contactor of main circuit in the described equipment control circuit; The remote auto of control loop is operated controlled end in the described equipment control circuit in the control output end of described PLC output circuit.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the high temperature vertical kiln automation control system block diagram of an embodiment of the utility model.
Fig. 2 is the control circuit schematic diagram of MCC among Fig. 1 embodiment (motor control center).
Fig. 3 is the input circuit wiring diagram of PLC among Fig. 1 embodiment.
Fig. 4 is the output circuit wiring diagram of PLC among Fig. 1 embodiment.
Embodiment
Embodiment one
The high temperature vertical kiln automation control system of present embodiment as shown in Figure 1, mainly the equipment control circuit three big links by industrial computer, main PLC programmable controller, high temperature vertical kiln constitute.Equipment control circuit is the typical case with controlled on-the-spot MCC (motor control center), is positioned at fly-ash separator, field instrument station in addition.
Industrial computer is connected by the communication terminal communication of Ethernet with PLC (Siemens S7-300 series).
MCC (motor control center) control circuit comprises main circuit and control loop, as shown in Figure 2, among the figure 1 for air switch, 2 for contactor (or frequency converter, soft initiator etc.), 3 for electrothermal relay, M be that motor, 5 is operated controlled end for the PLC remote auto for action button (execute-in-place), 7 for selector switch (hand, automatically), 6.The power end of main circuit meets drive motor M behind air switch 1, contactor 2 (or frequency converter, soft initiator etc.), electrothermal relay 3.In the control loop, action button 6 (7SB02) and PLC remote auto are operated controlled end 7 respectively after two selecting sides of selector switch 5 (7SAE02) are in parallel, connect with the control coil (7KM02) of main circuit contact device 2 again.
PLC has the input and output circuit, respectively as shown in Figure 3 and Figure 4.Among Fig. 3, the signal input part 2 ' of PLC input circuit connects signal feedback end---the contactor auxiliary contact of the contactor 2 of MCC (motor control center) main circuit.Among Fig. 4, the control output end 7 ' of PLC output circuit connects the remote auto of MCC (motor control center) control loop and operates controlled end 7.
After selecting switch to drop into auto state, the control system of present embodiment enters automatic control state, send automatic action command by the man-machine interface of industrial computer, PLC operates controlled end 7 by preset program by the remote auto in control output end 7 ' the control MCC control loop of output circuit, thereby actuating motor drives field apparatus work.Simultaneously, the contactor auxiliary contact of MCC main circuit feeds back to the input circuit of PLC with the running status of field apparatus, imports supervisory system (man-machine picture) again into, so that the operations staff monitors in real time, has also realized that closed loop controls automatically simultaneously.Robotization control need not manually to intervene.The operator on duty will inform by warning in system after any one equipment breaks down in the system, and timely handling failure also withdraws from automatic control mode.
The high temperature vertical kiln automation control system of present embodiment is divided into charging, discharging, combustion air, cooling air, discharging machine, fuel, waste gas and eight subsystems of Hydraulic Station, and each subsystem both can be controlled separately, but phase interconnected lock again.The device drives of each subsystem is identical with above principle of work with monitoring.Start before the shaft furnace, according to the requirement of output will important thermal parameter as: output, hot input, air-fuel ratio and cooling air coefficient etc. are imported on the computer interface; When starting shaft furnace, open discharge system, feed system, Hydraulic Station system, waste gas system, discharging machine system, cooling air system, combustion-aid air system and fuel system successively.
Start before the shaft furnace, according to the requirement of output will important thermal parameter as: output, hot input, air-fuel ratio and cooling air coefficient etc. are imported on the computer interface; When starting shaft furnace, open discharge system, feed system, Hydraulic Station system, waste gas system, discharging machine system, cooling air system, combustion-aid air system and fuel system successively.
The principal feature of present embodiment control is: good man computer interface, and some important parameters in the system (as output, air-fuel ratio, cold air coefficient, discharging speed etc.) can directly be set on the interface; Automaticity height, all devices possess on-site manual, remote control pattern, and possess functions such as equipment fault diagnosis warning; Can monitor temperature, the pressure and other parameters of kiln, operation trend is predicted adjusting, realize kiln digitizing operation.Reduced the operative employee to greatest extent, improved product quality, reduced energy resource consumption and saved cost.In addition, present embodiment has also been taked following supplementary measures:
1. before the startup shaft furnace, if emergent air blower is in manual mode or on-the-spot pattern, then combustion-aid air system can not start.
2. no matter be in manual or automatic mode, combustion fan does not start, and then fuel system can not start.
3. if be in automatic mode, for waste gas system, discharging machine system, cooling air system, combustion-aid air system and fuel system, can only start successively, previously do not start, then back one can not start; If wherein any apparatus goes wrong, then all the other equipment stop in order successively.
4. if the flow control of equipment is in automatic mode, then as long as on the interface, import output, hot input, air-fuel ratio and cooling air coefficient, system can calculate the flow of air and fuel oil automatically, and the rotating speed of equipment just can be adjusted automatically according to traffic demand then.
5. the speed of ash hoist is driven by frequency-variable controller, in the feed bin of weighing LOAD CELLS is housed, and signal of sensor links to each other with the frequency converter of discharging machine, and discharging machine speed can change according to each round-robin load.
Claims (3)
1. high temperature vertical kiln automation control system, comprise equipment control circuit, it is characterized in that: also comprise PLC and industrial computer, described industrial computer is connected with the communication terminal communication of PLC by Ethernet, and the control output end of described PLC is connected with the controlled end of equipment control circuit.
2. high temperature vertical kiln automation control system according to claim 1 is characterized in that: described equipment control circuit comprises main circuit and control loop, and the power end of described main circuit connects drive motor behind switch, contactor; In the described control loop, action button and PLC remote auto are operated controlled end respectively after two selecting sides of selector switch are in parallel, connect with the control coil of main circuit contact device again.
3. high temperature vertical kiln automation control system according to claim 2 is characterized in that: described PLC has the input and output circuit, and the signal input part of described PLC input circuit connects the signal feedback end of the contactor of main circuit in the described equipment control circuit; The remote auto of control loop is operated controlled end in the described equipment control circuit in the control output end of described PLC output circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201017647U CN201681289U (en) | 2010-01-26 | 2010-01-26 | Automatic control system of high-temperature shaft kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201017647U CN201681289U (en) | 2010-01-26 | 2010-01-26 | Automatic control system of high-temperature shaft kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201681289U true CN201681289U (en) | 2010-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201017647U Expired - Fee Related CN201681289U (en) | 2010-01-26 | 2010-01-26 | Automatic control system of high-temperature shaft kiln |
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| Country | Link |
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| CN (1) | CN201681289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064367A (en) * | 2012-12-12 | 2013-04-24 | 攀钢集团工程技术有限公司 | Motor control system and control method thereof based on intelligent motor control center |
-
2010
- 2010-01-26 CN CN2010201017647U patent/CN201681289U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064367A (en) * | 2012-12-12 | 2013-04-24 | 攀钢集团工程技术有限公司 | Motor control system and control method thereof based on intelligent motor control center |
| CN103064367B (en) * | 2012-12-12 | 2016-01-13 | 攀钢集团工程技术有限公司 | Based on electric machine control system and the control method thereof of intelligent electric machine control center |
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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: 20101222 Termination date: 20180126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |