CN203550639U - Full-automatic control system of shuttle kiln - Google Patents
Full-automatic control system of shuttle kiln Download PDFInfo
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- CN203550639U CN203550639U CN201320615103.XU CN201320615103U CN203550639U CN 203550639 U CN203550639 U CN 203550639U CN 201320615103 U CN201320615103 U CN 201320615103U CN 203550639 U CN203550639 U CN 203550639U
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Abstract
The utility model relates to the field of industrial control, and aims to provide a full-automatic control system of a shuttle kiln. According to the system, a programmer PLC (Programmable Logic Controller) control system is taken as a control core, multi-loop centralized control can be performed, each thermal control parameter and a self-adaptive fuzzy PID (Proportion Integration Differentiation) algorithm are written into a PLC closed-loop control unit in the PLC control system, and various safety interlock control on the shuttle kiln is programmed uniformly and is run automatically by the PLC control system. Related execution instructions, parameter display and amending, historical data and the like can be operated through an upper computer. After trial burning and adjusting of the kiln by the control system, the system can enter a full-automatic control mode just by calling corresponding programs when the same product is kilned later, manual intervention is not required, and the system can correspond to various different products. Through the system, the temperature and the valve location during the whole burning process are recorded through complete data, the historical data is convenient to view, and related historical records can be printed out by a user.
Description
Technical field
The utility model relates to industrial control field, refers to especially a kind of full-automatic Shuttle Kiln Control System.
Background technology
In ceramic kiln production process, natural gas and air have certain burning ratio, when both ratios are less than normal or bigger than normal, all can affect efficiency of combustion, make natural gas can not get abundant burning.In large-scale kiln sintering procedure, do not have clean-burning natural gas will cause great waste, but also can cause certain air pollution.
More advanced control system is that rough air-fuel ratio is controlled at present, to the control of every group of combustion air, select automatic butterfly valve to control its flow and complete the proportioning with natural gas, and the aperture of automatic butterfly valve and discharge characteristic are non-linear, cause control procedure unstable, control accuracy is poor, and then affects the efficiency of combustion of natural gas.And another kind of take the Shuttle Kiln Control System that intelligence instrument is core, and be that instrument producer writes instrument general pid control algorithm in advance, the signal that collection is come and setup parameter comparison, then control the driving arrangements such as actuator, frequency converter.This control system cost is low, but along with the increasing of control loop, the difference of firing process, the quality of each instrument producer algorithm not etc., and potential various uncertain factors, the coordinating and unifying of intelligence instrument, automatic decision ability are just very limited.
Utility model content
The utility model proposes a kind of full-automatic Shuttle Kiln Control System, it controls accurately stable, can carry out multiloop centralized Control.
The technical solution of the utility model is achieved in that a kind of full-automatic Shuttle Kiln Control System, being included as kiln provides the burner of burning, described burner is connected with igniter, the another two ends of described burner respectively pipeline connect gas header pipe and air-source, in the pipeline being connected with burner at gas header pipe, be provided with gas electromagnetic valve, in the pipeline being connected with burner at air-source, be provided with combustion-supporting magnetic valve, described gas electromagnetic valve and combustion-supporting magnetic valve all communicate to connect PLC control system, between described PLC control system and gas electromagnetic valve, also loop control connection has gas actuator, between described gas electromagnetic valve and burner, be provided with first flow sensor.
Between described PLC control system and combustion-supporting magnetic valve, also loop control connection has wind actuator, between described combustion-supporting magnetic valve and burner, be provided with second quantity sensor, described air-source connects combustion-supporting magnetic valve by combustion-supporting frequency converter, combustion fan successively, the combustion-supporting frequency converter of described PLC control system control connection.Described stove is also connected with smoke exhaust fan and cooling blower, and between described PLC control system and smoke exhaust fan, control connection has smoke evacuation frequency converter, and between described PLC control system and cooling blower, control connection has cooling frequency converter.In described stove, be provided with little differential pressure sensor and temperature sensor, described little differential pressure sensor, temperature sensor, first flow sensor, second quantity sensor are connected with PLC control system respectively.Described PLC control system is connected with host computer and alarm, and described host computer is connected with printer.
It is control core that native system be take Programmable PLC control system, each thermal technology is controlled to parameter and self-adaptive fuzzy PID algorithm is write the PLC Closed Loop Control Unit in PLC control system, and the various safety interlockings of shuttle kiln are controlled, program is enrolled in unification, by PLC control system, is automatically moved.Relevant instruction, parameter display and modification, the historical datas etc. carried out all can operate by host computer.This control system is after tune kiln is burnt in examination, and later identical product firing, only need call corresponding program, and system will enter Automatic Control, does not need manual intervention, can be to tackling various product.By native system, the temperature in whole sintering procedure, valve position have partial data record, conveniently check historical data, and user can be printed relevant historical record.
Further, between described burner and first flow sensor, be provided with burner magnetic valve, described igniter is connected with burner magnetic valve, described PLC control system control connection igniter.Automatic control to burner particularly a: kiln is generally designed with ten burners, each burner is provided with a burner magnetic valve, burner is done remote manual by igniter and is lighted a fire, and burner magnetic valve is blocked in fire extinguishing automatically, by alarm automatic alarm with by the automatic record of host computer.
Further, be provided with pressure sensor and YE on gas header pipe, this pressure sensor is connected with PLC control system respectively with YE.Automatic control to gas header pipe: pressure sensor is uploaded pressure, host computer shows and record, the Closed Loop Control Unit of PLC control system can be according in current process curve, the requirement of combustion gas automatically being held greatly or reduced the aperture of actuator, gaseous-pressure superpressure is under-voltage automatic alarm also cuts off main gas valve by YE, and only in the situation that smoke exhaust fan, cooling blower and combustion fan are normally opened system allow to open main gas valve.
The automatic control of furnace pressure: little differential pressure sensor is installed, and the pressure monitoring shows at host computer, the furnace pressure automatic alarm that transfinites.The signal input that the signal of little differential pressure sensor is controlled as smoke evacuation, the Closed Loop Control Unit in PLC control system can, according in current process curve, the requirement of furnace pressure being regulated to the size of combustion-supporting frequency converter automatically, allow pressure control within requiring.
The automatic control of smoke exhaust fan: smoke evacuation frequency converter is controlled, and the Closed Loop Control Unit in PLC control system can regulate automatically according to the requirement in current process curve the size of smoke evacuation frequency converter.If smoke exhaust fan breaks down in safety interlocking, system is automatically cut off main gas valve and is stopped kiln and report to the police.Thermocouple is housed on smoke exhaust fan, and when temperature surpasses 250 ℃, system can be pointed out by automatic alarm, prevents from damaging blower fan.
The automatic control of combustion fan: combustion-supporting frequency converter is controlled, and the Closed Loop Control Unit in PLC control system can be according in current process curve, the requirement of combustion air being regulated to the size of combustion-supporting frequency converter automatically.If combustion fan breaks down in safety interlocking, system is automatically cut off main gas valve and is stopped kiln and report to the police.
The automatic control of cooling blower: cooling frequency converter is controlled, and the Closed Loop Control Unit in PLC control system can be according in current process curve, the requirement of cooling air being regulated to the size of cooling frequency converter automatically.If cooling blower breaks down in safety interlocking, system is automatically cut off main gas valve and is stopped kiln and report to the police.
The chain grade of electrical safety of native system is: smoke exhaust fan > combustion fan > main gas valve > gaseous-pressure > igniter > burner magnetic valve.
Native system adopts adaptive fuzzy temperature to control and adaptive fuzzy flow algorithm combines, and has greatly improved the automatic control level of kiln, and has effectively ensured enterprise's strict technology requirement to thermal parameters such as atmosphere, temperature in product is burnt till.Guaranteeing that product burns till under the prerequisite of quality, significantly reduced the consumption of fuel, the technical indicator of energy-saving and emission-reduction is on the leading domestic level.This control system is simple to operate, popular close friend's man-machine picture, easily-learned easily mastered; The degree of modularity is high, easy to maintenance.Sintering qualified rate is high, and energy-conserving and environment-protective meet state's level trend of current low-carbon (LC).
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the system construction drawing of the full-automatic Shuttle Kiln Control System of the utility model;
Fig. 2 is the compound combustion temperature/atmosphere algorithm schematic diagram of the full-automatic Shuttle Kiln Control System of the utility model;
Fig. 3 is flow ignition temperature/atmosphere algorithm schematic diagram of the full-automatic Shuttle Kiln Control System of the utility model.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
A kind of full-automatic Shuttle Kiln Control System, as shown in Figure 1, being included as kiln 1 provides the burner 2 of burning, described burner 2 is connected with igniter 3, the another two ends of described burner 2 respectively pipeline connect gas header pipe 4 and air-source 5, in the pipeline being connected with burner 2 at gas header pipe 4, be provided with gas electromagnetic valve 6, in the pipeline being connected with burner 2 at air-source 5, be provided with combustion-supporting magnetic valve 7, described gas electromagnetic valve 6 and combustion-supporting magnetic valve 7 all communicate to connect PLC control system 8, 6 of described PLC control system 8 and gas electromagnetic valves are gone back loop control connection gas actuator 9, 2 of described gas electromagnetic valve 6 and burners are provided with first flow sensor 10.
7 of described PLC control system 8 and combustion-supporting magnetic valves are gone back loop control connection wind actuator 11,2 of described combustion-supporting magnetic valve 7 and burners are provided with second quantity sensor 14, described air-source 5 connects combustion-supporting magnetic valve 7, the combustion-supporting frequency converter 12 of described PLC control system 8 control connection by combustion-supporting frequency converter 12, combustion fan 13 successively.Described stove is also connected with smoke exhaust fan 15 and cooling blower 16, and 15 control connections of described PLC control system 8 and smoke exhaust fan have smoke evacuation frequency converter 17, and 16 control connections of described PLC control system 8 and cooling blower have cooling frequency converter 18.In described stove, be provided with little differential pressure sensor 19 and temperature sensor 20, described little differential pressure sensor 19, temperature sensor 20, first flow sensor 10, second quantity sensor 14 are connected with PLC control system 8 respectively.Described PLC control system 8 is connected with host computer 21 and alarm 22, and described host computer is connected with printer 23.
It is control core that native system be take Programmable PLC control system 8, each thermal technology is controlled to parameter and self-adaptive fuzzy PID algorithm is write the PLC Closed Loop Control Unit in PLC control system 8, and the various safety interlockings of shuttle kiln are controlled, program is enrolled in unification, by PLC control system 8, is automatically moved.Relevant instruction, parameter display and modification, the historical datas etc. carried out all can operate by host computer 21.This control system is after tune kiln is burnt in examination, and later identical product firing, only need call corresponding program, and system will enter Automatic Control, does not need manual intervention, can be to tackling various product.By native system, the temperature in whole sintering procedure, valve position have partial data record, conveniently check historical data, and user can be printed relevant historical record.
Based on native system, for sanitary ceramics class, domestic ceramics etc., we can adopt linearity-pulse compound burning technology, and as shown in Figure 2, it comprises linear burner stage and pulse-combustion stage to its algorithm.
Linear burner is created in initial ignition and heats up and low temperature holding stage, impulse electromagnetic valve is in open mode, the valve position feedback of kiln 1 temperature feedback, gas electromagnetic valve 6 and combustion-supporting magnetic valve 7 is as signal input PLC control system 8, and the Closed Loop Control Unit in PLC control system 8 can be according to requiring automatically to regulate gas actuator 9, wind actuator 11 sizes and ratio each other to meet the requirement to temperature and atmosphere to temperature, atmosphere in firing process curve.
At hot stage, adopt pulse-combustion to control, gas actuator 9 and wind actuator 11, in maximum opening, need not be controlled.What employing was controlled in pulse-combustion is a kind of mode of intermittent burning, and it uses pulse modulation technology, by the temperature that regulates the dutycycle of burning time to realize Industrial Stoves, controls.The air/gas flow of system presets, once burner 2 work, just in full load condition, are burnt and carried out temperature adjusting with the time ratio of the two states that do not burn by adjustment.That is to say, when needs heat up, burner is long 2 burning times, and the burnout time is short; On the contrary, in the time of need to lowering the temperature, burner is short 2 burning times, and the burnout time is long.
For existing oxidizing flame, neutral flame and reducing flame, atmosphere is required to higher occasion, such as firing of capacitance graded bushing, power station pillar, switch rod type etc., we can adopt flow combustion control technology, and its algorithm is as shown in Figure 3.Temperature sensor 20, flow sensor are inputted as signal, and the Closed Loop Control Unit of PLC control system 8 can be according to requiring automatically to regulate this district's combustion gas actuator, air actuators size and ratio each other to meet the requirement to temperature and atmosphere flow to temperature, atmosphere in firing process curve.
Further, 10 of described burner 2 and first flow sensors are provided with burner magnetic valve 24, and described igniter 3 is connected with burner magnetic valve 24, described PLC control system 8 control connection igniters 3.Automatic control to burner 2 particularly a: kiln 1 is generally designed with ten burners 2, each burner is provided with a burner magnetic valve 24, burner 2 is done remote manual by igniter 3 and is lighted a fire, burner magnetic valve 24 is blocked in fire extinguishing automatically, by alarm 22 automatic alarms with by the automatic record of host computer 21.
Further, be provided with pressure sensor and YE on gas header pipe 4, this pressure sensor is connected with PLC control system 8 respectively with YE.Automatic control to gas header pipe: pressure sensor is uploaded pressure, host computer 21 shows and record, the Closed Loop Control Unit of PLC control system 8 can be according in current process curve, the requirement of combustion gas automatically being held greatly or reduced the aperture of actuator, gaseous-pressure superpressure is under-voltage automatic alarm also cuts off main gas valve by YE, and only in the situation that smoke exhaust fan 15, cooling blower 16 and combustion fan 13 are normally opened system allow to open main gas valve.
The automatic control of kiln 1 pressure: little differential pressure sensor 19 is installed, and the pressure monitoring shows at host computer 21, the furnace pressure automatic alarm that transfinites.The signal input that the signal of little differential pressure sensor 19 is controlled as smoke evacuation, the Closed Loop Control Unit in PLC control system 8 can, according in current process curve, the requirement of furnace pressure being regulated to the size of combustion-supporting frequency converter 12 automatically, allow pressure control within requiring.
The automatic control of smoke exhaust fan 15: smoke evacuation frequency converter 17 is controlled, and the Closed Loop Control Unit in PLC control system 8 can regulate automatically according to the requirement in current process curve the size of smoke evacuation frequency converter 17.If smoke exhaust fan 15 breaks down in safety interlocking, system is automatically cut off main gas valve and is stopped kiln and report to the police.On smoke exhaust fan 15, thermocouple is housed, when temperature surpasses 250 ℃, system can be pointed out by automatic alarm, prevents from damaging blower fan.
The automatic control of combustion fan 13: combustion-supporting frequency converter 12 is controlled, and the Closed Loop Control Unit in PLC control system 8 can be according in current process curve, the requirement of combustion air being regulated to the size of combustion-supporting frequency converter 12 automatically.If combustion fan 13 breaks down in safety interlocking, system is automatically cut off main gas valve and is stopped kiln and report to the police.
The automatic control of cooling blower 16: cooling frequency converter 18 is controlled, and the Closed Loop Control Unit in PLC control system 8 can be according in current process curve, the requirement of cooling air being regulated to the size of cooling frequency converter 18 automatically.If cooling blower 16 breaks down in safety interlocking, system is automatically cut off main gas valve and is stopped kiln and report to the police.
The chain grade of electrical safety of native system is: smoke exhaust fan 15> combustion fan 13> main gas valve > gaseous-pressure > igniter 3> burner magnetic valve 24.
Native system adopts adaptive fuzzy temperature to control and adaptive fuzzy flow algorithm combines, and has greatly improved the automatic control level of kiln, and has effectively ensured enterprise's strict technology requirement to thermal parameters such as atmosphere, temperature in product is burnt till.Guaranteeing that product burns till under the prerequisite of quality, significantly reduced the consumption of fuel, the technical indicator of energy-saving and emission-reduction is on the leading domestic level.This control system is simple to operate, popular close friend's man-machine picture, easily-learned easily mastered; The degree of modularity is high, easy to maintenance.Sintering qualified rate is high, and energy-conserving and environment-protective meet state's level trend of current low-carbon (LC).
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. a full-automatic Shuttle Kiln Control System, being included as kiln (1) provides the burner (2) of burning, described burner (2) is connected with igniter (3), the another two ends of described burner (2) respectively pipeline connect gas header pipe (4) and air-source (5), in the pipeline being connected with burner (2) at gas header pipe (4), be provided with gas electromagnetic valve (6), in the pipeline being connected with burner (2) at air-source (5), be provided with combustion-supporting magnetic valve (7), it is characterized in that: described gas electromagnetic valve (6) and combustion-supporting magnetic valve (7) all communicate to connect PLC control system (8), between described PLC control system (8) and gas electromagnetic valve (6), also loop control connection has gas actuator (9), between described gas electromagnetic valve (6) and burner (2), be provided with first flow sensor (10),
Between described PLC control system (8) and combustion-supporting magnetic valve (7), also loop control connection has wind actuator (11), between described combustion-supporting magnetic valve (7) and burner (2), be provided with second quantity sensor (14), described air-source (5) connects combustion-supporting magnetic valve (7) by combustion-supporting frequency converter (12), combustion fan (13) successively, the combustion-supporting frequency converter of described PLC control system (8) control connection (12);
Described stove is also connected with smoke exhaust fan (15) and cooling blower (16), between described PLC control system (8) and smoke exhaust fan (15), control connection has smoke evacuation frequency converter (17), and between described PLC control system (8) and cooling blower (16), control connection has cooling frequency converter (18);
In described stove, be provided with little differential pressure sensor (19) and temperature sensor (20), described little differential pressure sensor (19), temperature sensor (20), first flow sensor (10), second quantity sensor (14) are connected with PLC control system (8) respectively;
Described PLC control system (8) is connected with host computer (21) and alarm (22), and described host computer is connected with printer (23).
2. full-automatic Shuttle Kiln Control System according to claim 1, it is characterized in that: between described burner (2) and first flow sensor (10), be provided with burner magnetic valve (24), described igniter (3) is connected with burner magnetic valve (24), described PLC control system (8) control connection igniter (3).
3. full-automatic Shuttle Kiln Control System according to claim 1, is characterized in that: on gas header pipe (4), be provided with pressure sensor and YE, this pressure sensor is connected with PLC control system (8) respectively with YE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320615103.XU CN203550639U (en) | 2013-09-30 | 2013-09-30 | Full-automatic control system of shuttle kiln |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320615103.XU CN203550639U (en) | 2013-09-30 | 2013-09-30 | Full-automatic control system of shuttle kiln |
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| CN203550639U true CN203550639U (en) | 2014-04-16 |
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| CN201320615103.XU Expired - Fee Related CN203550639U (en) | 2013-09-30 | 2013-09-30 | Full-automatic control system of shuttle kiln |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296159A (en) * | 2014-10-09 | 2015-01-21 | 景德镇陶瓷学院 | Device and method for adjusting sintering atmospheres |
| CN107091577A (en) * | 2017-05-18 | 2017-08-25 | 佛山市安然热工机电设备有限公司 | A kind of online linear scale control combustion system and its control method |
-
2013
- 2013-09-30 CN CN201320615103.XU patent/CN203550639U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296159A (en) * | 2014-10-09 | 2015-01-21 | 景德镇陶瓷学院 | Device and method for adjusting sintering atmospheres |
| CN107091577A (en) * | 2017-05-18 | 2017-08-25 | 佛山市安然热工机电设备有限公司 | A kind of online linear scale control combustion system and its control method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20170930 |