CN102759939A - Control system and control method of annealing furnace - Google Patents
Control system and control method of annealing furnace Download PDFInfo
- Publication number
- CN102759939A CN102759939A CN201210221918XA CN201210221918A CN102759939A CN 102759939 A CN102759939 A CN 102759939A CN 201210221918X A CN201210221918X A CN 201210221918XA CN 201210221918 A CN201210221918 A CN 201210221918A CN 102759939 A CN102759939 A CN 102759939A
- Authority
- CN
- China
- Prior art keywords
- temperature
- control
- annealing furnace
- section
- controlled variable
- 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.)
- Granted
Links
Images
Landscapes
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to the field of optical glass annealing, and particularly discloses a control system and a control method of an annealing furnace. The control system comprises a temperature measuring module and a control module, wherein the temperature measuring module is arranged inside the annealing furnace and is used for measuring a middle part temperature value and a side part temperature value inside the annealing furnace, and transmitting the measured temperature values to a temperature adjusting module; the temperature adjusting module is connected with the temperature measuring module and is used for feeding back the middle part temperature value and the side part temperature value to the control module and controlling a heating device according to a temperature control instruction from the control module; the control module is used for generating the temperature control instruction including control parameters based on a preset temperature control curve and transmitting the temperature control instruction to the temperature adjusting module, and is further used for modifying the control parameters set based on the temperature control curve according to the middle part temperature value and the side part temperature value, and generating the temperature control instruction including modified control parameters. With the adoption of the system and the method provided by the invention, the annealing temperature of optical glass inside the annealing furnace can be precisely controlled automatically; and the annealing yield and the production efficiency of the glass can be improved.
Description
Technical field
The present invention relates to the optical glass annealing field, relate in particular to a kind of control system and control method of annealing furnace.
Background technology
Fine annealing is a key link in the optical glass production run.General fine annealing is that glass is placed annealing furnace; Through annealing furnace glass evenly is heated to the transition temperature Tg near glass; And after insulation a period of time more successively through slow cooling at the uniform velocity and fast cold two stages, thereby the requirement that makes the inner unrelieved stress of glass reach processing and use.
It is bigger to fill ANNEALING OF GLASS stove thermal capacitance, and the diverse location temperature contrast is also bigger in the stove, carries out temperature control like independent employing humidostat, and the annealing yields is often not high, has a strong impact on production efficiency and energy consumption index.
Publication number is that the Chinese patent of CN2839274 provides a kind of optical glass short annealing resistance furnace automatic control system, and this system only detects burner hearth middle part temperature, and carries out the output control of electric power adjuster as the control temperature with this.Yet owing to there is glass thermal capacitance, the middle part Temperature Feedback portion's temperature that can relatively lag behind, possibly cause the middle part temperature normal thus in the limit, and limit portion temperature exceeding standard, influence annealing quality.
Publication number is that the Chinese patent of CN201828840U provides a kind of annealing furnace automatic temperature control system, and this control system adopts weighted-average method, calculates actual furnace temperature according to the temperature value of a plurality of check points in the stove.But in practical application, because the difference of glass charging capacity, the weight coefficient of the temperature of each check point is difficult to be confirmed, therefore still is difficult to eliminate or alleviate the unevenness adverse effect that control brings to temperature of temperature in the stove.
In addition, the adjusting to glass temperature in the annealing furnace in the prior art all is to intervene through manual work, not only can not realize automatically adjusting according to the actual conditions of temperature in the stove, also wastes a large amount of manpowers.
Summary of the invention
The technical matters that the present invention will solve is how accurately to control the annealing temperature of optical glass in the annealing furnace automatically, thereby improves ANNEALING OF GLASS yields, lifting glass quality.
The embodiment of the invention provides a kind of control system of annealing furnace, comprising:
Temperature measurement module is arranged in the said annealing furnace, and as limit portion temperature value, and the said middle part temperature value that will record and said limit portion temperature value send the temperature that is used to measure middle part in the said annealing furnace as the temperature of middle part temperature value and said annealing furnace inner edge portion;
The adjustment module; Be connected with said temperature measurement module; Said middle part temperature value that is used for receiving and said limit portion temperature value feed back to control module, also are used for heating arrangement that said annealing furnace is heated according to the temperature control instruction control from said control module; And
Said control module is used for comprising the temperature control instruction of controlled variable and said temperature control instruction being sent to said adjustment module based on predetermined temperature control curve generation; Also be used for the controlled variable set based on said temperature control curve according to said middle part temperature value and the temperature value correction of said limit portion, and generate the temperature control instruction that comprises revised controlled variable.
The embodiment of the invention also provides a kind of control method of annealing furnace, may further comprise the steps:
Generate the temperature control instruction that comprises controlled variable based on predetermined temperature control curve;
Control is used for heating arrangement that said annealing furnace is heated according to said temperature control instruction;
The temperature of obtaining middle part in the said annealing furnace as the temperature of middle part temperature value and said annealing furnace inner edge portion as limit portion temperature value;
Controlled variable correction step is revised the controlled variable of setting based on said temperature control curve according to said middle part temperature value, said limit portion temperature value;
Generation comprises the temperature control instruction of revised controlled variable; And
Be used for heating arrangement that said annealing furnace is heated according to the temperature control instruction control that comprises said revised controlled variable.
The control system of annealing furnace provided by the invention and control method; Through predefined controlled variable being revised automatically according to the middle part temperature value in the annealing furnace; Can realize accurate control, eliminate the temperature difference that causes owing to the glass thermal capacitance, improve the annealing yields of product glass temperature in the stove; Thereby improved production efficiency, saved manpower.
Description of drawings
The module map of the control system of the annealing furnace that Fig. 1 provides for one embodiment of the invention;
The structural representation of the control system of the annealing furnace that Fig. 2 provides for another embodiment of the present invention;
The process flow diagram of the control method of the annealing furnace that Fig. 3 provides for another embodiment of the present invention.
Description of reference numerals
11: resistance wire; 2: power module; 21: pressure regulator; 3: temperature measurement module; 31: the middle heat galvanic couple; 32: limit portion thermopair; 4: control module; 41: man-machine interface; 42: programmable logic controller (PLC) (Programmable Logic Controller, PLC); 5: the adjustment module; 51: temperature instrument; 52: temperature control instrument; 6: annealing furnace.
Embodiment
The module map of the control system of the annealing furnace that Fig. 1 provides for one embodiment of the invention, the structural representation of the control system of the annealing furnace that Fig. 2 provides for another embodiment of the present invention.This control system comprises: temperature measurement module 3, control module 4 and adjustment module 5.
Wherein, the annealing furnace in the present embodiment 6 is specially box-annealing furnace.Be provided with heating module in the annealing furnace 6, it is preferably resistance wire 11 in the present embodiment, is evenly arranged on the inwall of annealing furnace 6, is used for annealing furnace 6 is heated, thereby the glass in the annealing furnace 6 is heated.Resistance wire 11 is connected with pressure regulator 21 as power module 2, and this pressure regulator 21 is preferably thyristor and exchanges pressure regulator, and being used to resistance wire 11 provides heating to use voltage, and this voltage can be regulated.Wherein power module 2 and resistance wire 11 are configured for heating arrangement that annealing furnace 6 is heated, and can implement the control to heating arrangement with voltage through the heating of regulating power module 2 and being provided.
Preferably, the temperature measurement module in the present embodiment 3 comprises middle heat galvanic couple 31 and limit portion thermopair 32.Middle heat galvanic couple 31 is arranged on the burner hearth centre position, is used to measure above-mentioned middle part temperature value, and the middle part temperature value that will record is sent to adjustment module 5; Limit portion thermopair 32 is arranged on burner hearth limit portion, preferably near the resistance wire 11 that is positioned at burner hearth limit portion, is used to measure above-mentioned limit portion temperature value, and the limit portion temperature value that records is sent to adjustment module 5.
Particularly, control module 4 comprises: instruction generation unit and computing unit.
Wherein, the instruction generation unit is used for generating based on temperature control curve and comprises the controlled variable of setting or the temperature control instruction of revised controlled variable, and temperature control instruction is sent to adjustment module 5.Middle part temperature value when computing unit is used to calculate annealing furnace 6 and reaches steady state (SS) and the difference between the limit portion temperature value; And calculate according to the controlled variable that this difference pair is associated with subsequent control section in the temperature control curve, obtain revised controlled variable.Further; Difference appears because some parts of control system also can make between middle part temperature value and the limit portion temperature value when breaking down; And this difference can be bigger; Therefore rule of thumb preset threshold value (for example 15 degrees centigrade, in fact the value in 15 ~ 20 degrees centigrade of scopes can), so control module 4 also comprises judging unit and alarm unit.Whether the difference that judging unit is used to judge computing unit calculating is greater than threshold value; Computing unit calculates and the Correction and Control parameter when being less than or equal to this threshold value; Alarm unit then sends warning in judgment unit judges during greater than threshold value for this difference.
Wherein, annealing furnace 6 reach steady state (SS) be meant limit portion temperature value equal with temperature control curve in the situation of the controlled variable that is associated of current control section continued the preset time section at least.
Preferably, the control module 4 of present embodiment comprises man-machine interface 41 and PLC 42.
Further, adjustment module 5 comprises: detecting unit and regulon.Preferably, be respectively temperature instrument 51 and temperature control instrument 52.
Wherein, detecting unit is connected with PLC 42 and middle part temperature measuring unit, and promptly temperature instrument 51 is connected with PLC 42 and middle heat galvanic couple 31, be used to obtain middle part temperature value that middle heat galvanic couple 31 records and should in the middle part of temperature value be sent to PLC 42; Regulon is connected with PLC 42, limit portion temperature measuring unit (being limit portion thermopair 32) and power module 2; Be used to obtain the limit portion temperature value that limit portion thermopair 32 records and this limit portion temperature value is sent to PLC 42, also be used for regulating the output voltage of power module 2 according to the temperature control instruction that receives.
For above-mentioned each parts; Preferably; Man-machine interface 41 is connected through telecommunication cable with the RS232 communication port of programmable logic controller (PLC) PLC 42 via its proposed standard (RS232) communication port, and man-machine interface 41 is used for including to PLC 42 inputs the operating instruction of controlled variable.This controlled variable is the parameters such as lifting/lowering temperature time, temperature value and temperature retention time of each control section in the temperature control curve of formulating in advance.According to the actual process needs, a temperature control curve can be provided with a plurality of control sections, for example comprises at least one section that heats up, temperature descending section and fast cooling section at a slow speed, and wherein each section that heats up also can comprise soaking zone.
Makeover process comprises particularly: the controlled variable in this difference and the subsequent control section is calculated, obtained revised controlled variable.For example: PLC 42 accesses the controlled variable of subsequent control section from its storer, like the intensification desired temperature in the annealing temperature and the desired temperature of lowering the temperature at a slow speed, and on the basis of this desired temperature, increases above-mentioned difference, obtains revised controlled variable,
This steady state (SS) is meant: when limit portion temperature value arrive set be lower than a certain temperature value of annealing temperature the time; For example 200 degrees centigrade, 250 degrees centigrade etc.; With this temperature insulation a period of time (for example 30-60 minute) afterwards, can think and reach steady state (SS) in the stove.
Preferably; The RS485 communication port of temperature control instrument 52 is connected through twisted-pair feeder with the RS485 communication port of PLC 42; Its signal input part is connected with limit portion thermopair 32 through compensating wire, and its signal output part is connected through twisted-pair feeder with the signal input part of pressure regulator 21.Temperature control instrument 52 is used for the output voltage according to the temperature control instruction control pressure regulator 21 of PLC 42, thus the heating temp of controlling resistance silk 11; Temperature control instrument 52 also receives the limit portion temperature value that limit portion thermopair 32 records, and limit portion temperature value is sent to PLC 42.
Preferably, the signal input part of temperature instrument 51 also is connected through compensating wire with middle heat galvanic couple 31, and its RS485 communication port is connected through twisted-pair feeder with the RS485 communication port of PLC 42.Temperature instrument 51 is used to obtain the interior middle part temperature value of stove that middle heat galvanic couple 31 records, and the middle part temperature value is sent to PLC 42.
In addition; Take place unusual for annealing process; For example the annealing case when unusual such as outage takes place in power module 2, thus then eliminated unusual recover normal after, the computing unit in the control module 3 comes the Correction and Control parameter according to taking place to be positioned at which control section when unusual.It is that example describes that present embodiment takes place unusually with power module 2.
Particularly; If when occurring in the intensification section in the temperature control curve unusually; Then according to the limit portion temperature value that recovers just often the heating-up time of this intensification section is revised, so that the heating rate of this intensification section remains unchanged, annealing furnace can heat up according to this heating rate;
If when occurring in the fast cooling section in the temperature control curve unusually; Then the temperature fall time of this fast cooling section is revised according to the limit portion temperature value that recovers just often; So that the rate of temperature fall of this fast cooling section remains unchanged, annealing furnace can be lowered the temperature according to this rate of temperature fall; And
If when occurring in the temperature descending section at a slow speed in the temperature control curve unusually; Then confirm in the temperature control curve adjacent in this intensification section before temperature descending section at a slow speed; And according to the middle part temperature value, the limit portion temperature value that recover just often the controlled variable of this intensifications section is revised, so that can section get into this temperature descending section at a slow speed once more via this intensification.
For example, if the initial temperature of the section that heats up is 100 °, end temp is 500 °, and heating rate is v1, and the limit portion temperature value when power module 2 generations are unusual is 400 °, promptly occurs in the section that heats up unusually.When power module 2 recovers just often, no matter the limit portion temperature value of this moment is positioned at this intensifications section or is positioned at other control section, and computing unit is all revised the heating-up time according to recovery limit portion temperature value and v1 just often.Instruct generation unit to generate temperature control instruction then based on this revised controlled variable; And this temperature control instruction is sent to adjustment module 5; Adjustment module 5 is according to this temperature control instruction control heating arrangement, makes annealing furnace to be heated up and got into next control section by this intensifications section speed with v1.
If the initial temperature of temperature descending section is 500 ° at a slow speed, end temp is 300 °, and control section the last period of temperature descending section is the section that heats up at a slow speed, and heating rate is v2, and the limit portion temperature value when power module 2 generations are unusual is 350 °, promptly occurs in temperature descending section at a slow speed unusually.When power module 2 recovers just often, no matter which control section at this moment limit portion temperature value has dropped to, and computing unit is all revised the heating-up time according to the middle part temperature value and the limit portion temperature value that recover just often.Instruct generation unit to generate temperature control instruction then based on this revised controlled variable; And this temperature control instruction is sent to heating arrangement; Make annealing furnace to heat up by the speed of this intensification section with v2; When temperature is elevated to 500 ° again, and, get into temperature descending section at a slow speed again through predetermined temperature retention time.
Above control procedure is accomplished automatically, thereby reduced annealing process the manpower and materials when unusual takes place, and can guarantee the yields of annealing, and enhances productivity.
Present embodiment based on principle be: the glass actual temperature is approaching in middle part temperature value and the stove, can represent glass temperature with the middle part temperature value; The temperature of limit portion temperature value and the resistance wire heating of limit portion is approaching, can represent the temperature in the controlled variable with limit portion temperature value; But because there is thermal capacitance in glass, therefore the middle part temperature value can lag behind limit portion temperature value (when for example limit portion temperature value is 220 degrees centigrade, representing the middle part temperature value of glass annealing temperature possibly only reach 200 degrees centigrade).Therefore need to measure the middle part temperature value in real time, and utilize the middle part temperature value to go the Correction and Control parameter, thereby realize accuracy control over temperature in the stove is improved the annealing quality of optical glass.
Details are as follows for the principle of work of the control system of the annealing furnace that present embodiment provides:
The user is contained the operating instruction of controlled variable to PLC 42 inputs through man-machine interface 41; PLC 42 generates according to this operating instruction and comprises the temperature control instruction of controlled variable and be sent to temperature control instrument 52; Temperature control instrument 52 makes the output voltage of pressure regulator 21 can guarantee that resistance wire 11 produces suitable heat glass in the stove is heated according to the output of temperature control instruction control pressure regulator 21.Temperature instrument 51 reads the middle part temperature value that middle heat galvanic couple 31 records in real time and is sent to PLC 42; Temperature control instrument 52 reads the limit portion temperature value that limit portion thermopair 32 records in real time and is sent to PLC 42, makes PLC 42 can monitor the progress of annealing process.When glass reaches steady state (SS) in the stove; The middle part temperature value under PLC 42 these steady state (SS)s of calculating and the difference of limit portion temperature value are judged according to the threshold value of storage, if this time difference value exceeds threshold value then; Explain that then some parts possibly break down in this annealing furnace, then report to the police; Wherein this threshold value can be for once the value of testing, for example the 15-20 degree; If do not exceed threshold value; Then PLC 42 accesses the controlled variable of subsequent control section from its storer, utilizes the middle part temperature value that this controlled variable is proofreaied and correct, and obtains revised controlled variable; And the temperature control instruction that will include revised controlled variable is sent to temperature control instrument 52; Temperature control instrument 52 is regulated the output of pressure regulator 21 according to this revised controlled variable, thereby regulates the degree of heat of resistance wire 11, the temperature of regulating glass in the stove.
The process flow diagram of the control method of the annealing furnace that Fig. 3 provides for another embodiment of the present invention, this control method may further comprise the steps:
Step S11, control module generate the temperature control instruction that comprises controlled variable according to predetermined temperature control curve, and this temperature control instruction is sent to the adjustment module;
Step S12, adjustment module are used for voltage that annealing furnace is heated according to the temperature control instruction control power module output that receives, and the adjustment module is also obtained in the stove that temperature measurement module records middle part temperature value and limit portion temperature value and is sent to control module; The adjustment module is regulated the output voltage of power module according to revised controlled variable;
Step S13, control module judge whether all control sections of this temperature CONTROL PROCESS are accomplished, are then to finish, otherwise execution in step S14;
Step S14, control module judge whether to take place unusual; Be execution in step S15 then, otherwise execution in step S16;
It is normal that step S15, control module judge whether to recover; Be execution in step S18 then, otherwise continue to detect whether recovered normal;
Step S16, control module judge whether annealing process reaches steady state (SS) in current control section, are execution in step S17 then, otherwise execution in step S12;
Middle part temperature value when step S17, control module reach steady state (SS) according to annealing furnace and limit portion temperature value are revised controlled variable, generate then to include the temperature control instruction of revised controlled variable and be sent to the adjustment module;
Step S18, control module come the Correction and Control parameter according to the middle part temperature value and the limit portion temperature value that the control section that is positioned at when unusual take place and recover after normal, and generate the temperature control instruction that comprises revised controlled variable; Execution in step S12 then.
The control system of annealing furnace provided by the invention and control method; Middle part temperature value through in the annealing furnace is revised predefined controlled variable automatically; Can realize accurate control, eliminate the temperature difference that causes owing to the glass thermal capacitance, improve the annealing yields of product glass temperature in the stove; Thereby improved production efficiency, saved manpower.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
Claims (12)
1. the control system of an annealing furnace is characterized in that, comprising:
Temperature measurement module is arranged in the said annealing furnace, and as limit portion temperature value, and the said middle part temperature value that will record and said limit portion temperature value send the temperature that is used to measure middle part in the said annealing furnace as the temperature of middle part temperature value and said annealing furnace inner edge portion;
The adjustment module; Be connected with said temperature measurement module; Said middle part temperature value that is used for receiving and said limit portion temperature value feed back to control module, also are used for heating arrangement that said annealing furnace is heated according to the temperature control instruction control from said control module; And
Said control module is used for comprising the temperature control instruction of controlled variable and said temperature control instruction being sent to said adjustment module based on predetermined temperature control curve generation; Also be used for the controlled variable set based on said temperature control curve according to said middle part temperature value, the temperature value correction of said limit portion, and generate the temperature control instruction that comprises revised controlled variable.
2. the control system of annealing furnace according to claim 1 is characterized in that, said control module comprises:
The instruction generation unit; Be connected with said adjustment module; Be used for comprising the controlled variable of said setting or the temperature control instruction of said revised controlled variable, and said temperature control instruction is sent to said adjustment module based on said temperature control curve generation; And
Computing unit; Be connected with said adjustment module; Difference when being used to calculate said annealing furnace and reaching steady state (SS) between said middle part temperature value and the said limit portion temperature value; And revise according to the controlled variable that said difference pair is associated with subsequent control section in the said temperature control curve, to obtain said revised controlled variable.
3. the control system of annealing furnace according to claim 2; It is characterized in that, said annealing furnace reach steady state (SS) be meant said limit portion temperature value equal with said temperature control curve in the situation of the controlled variable that is associated of current control section continued the preset time section at least.
4. according to the control system of claim 2 or 3 described annealing furnaces, it is characterized in that said control module also comprises:
Judging unit is connected with said computing unit, is used to judge that whether said difference is greater than predetermined threshold value; And
Alarm unit is connected with said judging unit, is used for when being judged as said difference greater than said threshold value, sends expression unusual warning has taken place.
5. the control system of annealing furnace according to claim 4 is characterized in that, said computing unit also is used for, thereby saidly recovers under the normal situation unusually having eliminated,
If the said control section that occurs in conduct intensification section in the said temperature control curve unusually; Then the said limit portion temperature value when recovering is revised the controlled variable as the heating-up time of this intensifications section, so that the heating rate of this intensification section remains unchanged;
If the said control section that occurs in unusually in the said temperature control curve as the fast cooling section; Then the said limit portion temperature value when recovering is revised the controlled variable as temperature fall time of this fast cooling section, so that the rate of temperature fall of this fast cooling section remains unchanged; And
If said occurring in unusually in the said temperature control curve as the control section of temperature descending section at a slow speed; Then confirm in the said temperature control curve as adjacent in this control section of the intensification section before the temperature descending section at a slow speed; And the said middle part temperature value when recovering, said limit portion temperature value revise the controlled variable of this intensifications section, so that can section get into this temperature descending section at a slow speed once more via this intensification.
6. the control system of annealing furnace according to claim 1 is characterized in that, said temperature measurement module comprises:
The middle part temperature measuring unit is arranged on the middle part in the said annealing furnace, is used to measure said middle part temperature value; And
Limit portion temperature measuring unit is arranged on the limit portion in the said annealing furnace, is used to measure said limit portion temperature value.
7. the control system of annealing furnace according to claim 6 is characterized in that, said adjustment module comprises:
Detecting unit is connected with said control module and said middle part temperature measuring unit, is used for the middle part temperature value from said middle part temperature measuring unit is sent to said control module; And
Regulon; Be connected with said control module and said limit portion temperature measuring unit; Be used for and be sent to said control module from the limit portion temperature value of said limit portion temperature measuring unit, also be used for being used for said heating arrangement that said annealing furnace is heated according to temperature control instruction control from said control module.
8. the control method of an annealing furnace is characterized in that, may further comprise the steps:
Generate the temperature control instruction that comprises controlled variable based on predetermined temperature control curve;
Control is used for heating arrangement that said annealing furnace is heated according to said temperature control instruction;
The temperature of obtaining middle part in the said annealing furnace as the temperature of middle part temperature value and said annealing furnace inner edge portion as limit portion temperature value;
Controlled variable correction step is revised the controlled variable of setting based on said temperature control curve according to said middle part temperature value, said limit portion temperature value;
Generation comprises the temperature control instruction of revised controlled variable; And
Be used for heating arrangement that said annealing furnace is heated according to the temperature control instruction control that comprises said revised controlled variable.
9. the control method of annealing furnace according to claim 8 is characterized in that, said controlled variable correction step specifically comprises:
Difference when calculating said annealing furnace and reaching steady state (SS) between said middle part temperature value and the said bottom temp value;
When said difference is not more than predetermined threshold value, revise according to the controlled variable that said difference pair is associated with subsequent control section in the said temperature control curve, to obtain said revised controlled variable, perhaps
When said difference during, send expression unusual warning has taken place greater than said threshold value.
10. the control method of annealing furnace according to claim 9 is characterized in that, said threshold value is 15 degrees centigrade.
11. the control method of each described annealing furnace is characterized in that according to Claim 8-10,
Said annealing furnace reach steady state (SS) be meant said limit portion temperature value equal with said temperature control curve in the situation of the controlled variable that is associated of current control section continued the preset time section at least.
12. the control method of annealing furnace according to claim 9 is characterized in that, said controlled variable correction step also comprises, thereby saidly recovers under the normal situation unusually having eliminated:
If the said control section that occurs in conduct intensification section in the said temperature control curve unusually; Then the said limit portion temperature value when recovering is revised the controlled variable as the heating-up time of this intensifications section, so that the heating rate of this intensification section remains unchanged;
If the said control section that occurs in unusually in the said temperature control curve as the fast cooling section; Then the said limit portion temperature value when recovering is revised the controlled variable as temperature fall time of this fast cooling section, so that the rate of temperature fall of this fast cooling section remains unchanged; And
If said occurring in unusually in the said temperature control curve as the control section of temperature descending section at a slow speed; Then confirm in the said temperature control curve as adjacent in this control section of the intensification section before the temperature descending section at a slow speed; And the said middle part temperature value when recovering, said limit portion temperature value revise the controlled variable of this intensifications section, so that can section get into this temperature descending section at a slow speed once more via this intensification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210221918.XA CN102759939B (en) | 2012-06-29 | 2012-06-29 | Control system and control method of annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210221918.XA CN102759939B (en) | 2012-06-29 | 2012-06-29 | Control system and control method of annealing furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102759939A true CN102759939A (en) | 2012-10-31 |
| CN102759939B CN102759939B (en) | 2014-07-16 |
Family
ID=47054417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210221918.XA Active CN102759939B (en) | 2012-06-29 | 2012-06-29 | Control system and control method of annealing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102759939B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927830A (en) * | 2012-11-01 | 2013-02-13 | 西安电炉研究所有限公司 | Measurement and control system with discriminative tracking for temperature of high-temperature resistance furnace and monitoring method thereof |
| CN103243214A (en) * | 2013-05-07 | 2013-08-14 | 韶关市第二高级技工学校实习工厂 | Heat treatment control system and control method thereof |
| CN104057606A (en) * | 2013-03-18 | 2014-09-24 | 克朗斯股份公司 | Apparatus For Controlling Tempering Device Of Blow-molding Machine And Method For Controlling Tempering Device Of Blow-molding Machine |
| CN104328273A (en) * | 2014-11-24 | 2015-02-04 | 湖北江山重工有限责任公司 | Control method for temperature of thermal treatment heating furnace |
| CN105182768A (en) * | 2015-08-17 | 2015-12-23 | 惠州莫思特科技有限公司 | Intelligent control system |
| CN105423769A (en) * | 2015-12-25 | 2016-03-23 | 蒋全欣 | Silicon controlled rectifier intelligent temperature control device and temperature control method for electric heating kiln |
| CN111459201A (en) * | 2020-04-09 | 2020-07-28 | 蚌埠凯盛工程技术有限公司 | Method and device for coordinately controlling speed of calender and annealing kiln |
| CN114791229A (en) * | 2022-03-30 | 2022-07-26 | 彩虹显示器件股份有限公司 | System and method for detecting inflow airflow at fire hole of glass forming annealing furnace |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055317C (en) * | 1996-08-27 | 2000-08-09 | 宝山钢铁(集团)公司 | Online controlling method for continuously annealing furnace |
| CN2839274Y (en) * | 2005-11-18 | 2006-11-22 | 成都光明光电股份有限公司 | Automatic control system for optical glass fast annealing resistor furnace |
| CN201154976Y (en) * | 2008-01-05 | 2008-11-26 | 佛山市顺德区精艺万希铜业有限公司 | Well annealing furnace |
| CN100491548C (en) * | 2007-06-08 | 2009-05-27 | 武汉钢铁(集团)公司 | Method of controlling temperature of high-temperature ring annealing furnace |
| CN201749349U (en) * | 2010-06-29 | 2011-02-16 | 哈尔滨金鑫电气有限责任公司 | Control system for industrial fuel annealing furnace |
| CN201828840U (en) * | 2010-09-14 | 2011-05-11 | 河南省电力公司安阳供电公司 | Automatic temperature control system of annealing furnace |
| CN202694181U (en) * | 2012-06-29 | 2013-01-23 | 湖北新华光信息材料有限公司 | Control system of annealing furnace |
-
2012
- 2012-06-29 CN CN201210221918.XA patent/CN102759939B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055317C (en) * | 1996-08-27 | 2000-08-09 | 宝山钢铁(集团)公司 | Online controlling method for continuously annealing furnace |
| CN2839274Y (en) * | 2005-11-18 | 2006-11-22 | 成都光明光电股份有限公司 | Automatic control system for optical glass fast annealing resistor furnace |
| CN100491548C (en) * | 2007-06-08 | 2009-05-27 | 武汉钢铁(集团)公司 | Method of controlling temperature of high-temperature ring annealing furnace |
| CN201154976Y (en) * | 2008-01-05 | 2008-11-26 | 佛山市顺德区精艺万希铜业有限公司 | Well annealing furnace |
| CN201749349U (en) * | 2010-06-29 | 2011-02-16 | 哈尔滨金鑫电气有限责任公司 | Control system for industrial fuel annealing furnace |
| CN201828840U (en) * | 2010-09-14 | 2011-05-11 | 河南省电力公司安阳供电公司 | Automatic temperature control system of annealing furnace |
| CN202694181U (en) * | 2012-06-29 | 2013-01-23 | 湖北新华光信息材料有限公司 | Control system of annealing furnace |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927830B (en) * | 2012-11-01 | 2014-05-21 | 西安电炉研究所有限公司 | Measurement and control system with discriminative tracking for temperature of high-temperature resistance furnace and monitoring method thereof |
| CN102927830A (en) * | 2012-11-01 | 2013-02-13 | 西安电炉研究所有限公司 | Measurement and control system with discriminative tracking for temperature of high-temperature resistance furnace and monitoring method thereof |
| CN104057606B (en) * | 2013-03-18 | 2017-01-11 | 克朗斯股份公司 | Apparatus For Controlling Tempering Device Of Blow-molding Machine And Method For Controlling Tempering Device Of Blow-molding Machine |
| CN104057606A (en) * | 2013-03-18 | 2014-09-24 | 克朗斯股份公司 | Apparatus For Controlling Tempering Device Of Blow-molding Machine And Method For Controlling Tempering Device Of Blow-molding Machine |
| CN103243214A (en) * | 2013-05-07 | 2013-08-14 | 韶关市第二高级技工学校实习工厂 | Heat treatment control system and control method thereof |
| CN104328273A (en) * | 2014-11-24 | 2015-02-04 | 湖北江山重工有限责任公司 | Control method for temperature of thermal treatment heating furnace |
| CN105182768A (en) * | 2015-08-17 | 2015-12-23 | 惠州莫思特科技有限公司 | Intelligent control system |
| CN105423769A (en) * | 2015-12-25 | 2016-03-23 | 蒋全欣 | Silicon controlled rectifier intelligent temperature control device and temperature control method for electric heating kiln |
| CN105423769B (en) * | 2015-12-25 | 2018-01-19 | 蒋全欣 | A kind of electric heating kiln controllable silicon intelligent temperature control device and temperature control method |
| CN111459201A (en) * | 2020-04-09 | 2020-07-28 | 蚌埠凯盛工程技术有限公司 | Method and device for coordinately controlling speed of calender and annealing kiln |
| CN111459201B (en) * | 2020-04-09 | 2022-12-02 | 蚌埠凯盛工程技术有限公司 | Method and device for coordinately controlling speed of calender and annealing kiln |
| CN114791229A (en) * | 2022-03-30 | 2022-07-26 | 彩虹显示器件股份有限公司 | System and method for detecting inflow airflow at fire hole of glass forming annealing furnace |
| CN114791229B (en) * | 2022-03-30 | 2024-05-14 | 彩虹显示器件股份有限公司 | System and method for detecting inflow air flow of furnace mouth of glass forming annealing furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102759939B (en) | 2014-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102759939B (en) | Control system and control method of annealing furnace | |
| CN108147647B (en) | Heating control method for glass melting furnace | |
| CN104503510A (en) | Temperature synchronizing system and method used for metallurgic performance measuring device | |
| CN111156817B (en) | Method and system for controlling sintering temperature of roller kiln | |
| CN106951012A (en) | A kind of temprature control method of baking box | |
| CN104281179A (en) | Controlling system and data collecting/displaying method | |
| CN113403678A (en) | Single crystal welding method, device, equipment and computer readable storage medium | |
| CN103279146B (en) | Method and system for temperature rise based on PID control | |
| KR102280818B1 (en) | How to control the discharging of the glass plate in the glass plate strengthening process | |
| CN102351190B (en) | Reducing furnace control method and device | |
| CN202694181U (en) | Control system of annealing furnace | |
| CN103323483A (en) | Double-wire test method for melting and crystallization properties | |
| EP3650412B1 (en) | Actuating mechanism control method for glass plate tempering process | |
| CN102081416B (en) | Method for accurately controlling temperature during high-frequency heating | |
| CN112279507A (en) | Temperature control method and device, electronic equipment and system | |
| CN115852138A (en) | Automatic control system for heat treatment processing | |
| CN105385843B (en) | A kind of hot rolling slab method for heating and controlling based on the last temperature of section | |
| CN202166904U (en) | Medium frequency-induction heating intelligent temperature control device | |
| CN107562024A (en) | A kind of glass plate steel process course control method for use | |
| CN202529851U (en) | Reduction furnace control device | |
| CN210999570U (en) | Automatic viscosity adjusting device for capsule solution tank | |
| CN202075603U (en) | Top temperature measurement compensating system of regenerative chamber of coke oven | |
| CN116182564B (en) | Intelligent control system for ignition furnace of sintering machine | |
| CN203333725U (en) | Heat treatment control system | |
| CN102645940B (en) | The method of full closed loop control electric upset forging temperature and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |