CN201809411U - Large-sized plate vacuum annealing furnace multi-temperature zone temperature uniformity control system - Google Patents
Large-sized plate vacuum annealing furnace multi-temperature zone temperature uniformity control system Download PDFInfo
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- CN201809411U CN201809411U CN201020568344XU CN201020568344U CN201809411U CN 201809411 U CN201809411 U CN 201809411U CN 201020568344X U CN201020568344X U CN 201020568344XU CN 201020568344 U CN201020568344 U CN 201020568344U CN 201809411 U CN201809411 U CN 201809411U
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Abstract
The utility model discloses a large-sized plate vacuum annealing furnace multi-temperature zone temperature uniformity control system comprising a plurality of temperature controllers, a plurality of power regulators and an upper computer monitoring system, wherein the temperature controllers are correspondingly connected with a plurality of heating zones and control the temperature of the heating zones; the power regulators are respectively connected with the temperature controllers, are correspondingly connected with the heating zones of a vacuum annealing furnace and adjusts the heating power of the vacuum annealing furnace ; the upper computer monitoring system is correspondingly connected with the heating zones of the vacuum annealing furnace, connected with a temperature uniformity itinerant detector used for detecting the temperature of the heating zones and connected with the temperature controllers, the power regulators and the temperature uniformity itinerant detector through an RS485 bus and makes communication; and the upper computer monitoring system is an industrial personal computer for analyzing signals detected by the temperature uniformity itinerant detector and monitoring the working processes of each temperature controller and each power regulator. The utility model has high temperature control precision, good temperature uniformity, high reliability, good adaptivity and robustness and low cost and is easy to popularize and use.
Description
Technical field
The utility model belongs to the automatic control technology field, especially relates to a kind of many warm areas of large-sized sheet material vacuum annealing furnace uniform temperature Controlling System.
Background technology
In recent years, rare metal sheet material has been widely used in aerospace, navigation, nuclear power, field of petrochemical industry, and that these industries require the technical feature of rare metal sheet material is high, and plate surface can not have oxidative phenomena and require very tight to the aberrations in property of whole sheet material.And vacuum annealing is the important process process of rare metal board materials production, eliminates stress or recrystallization annealing under non-oxidation and pollution-free state, to eliminate work hardening and to recover plasticity.Different vacuum states and temperature, can produce distinct effect to material, this is a precision and complicated process, so homogeneity and vacuum tightness to the annealing furnace furnace temperature have harsh requirement, but the vacuum annealing furnace of the production rare metal sheet material of present domestic independent research, the capacious large-sized sheet material vacuum annealing furnace of furnace chamber particularly, since many, the Detection ﹠ Controling of heating warm area inconsistent with and control techniques and control method imperfection also, temperature-controlled precision is low, many warm areas uniform temperature is poor, also is difficult to adapt to the applied research and the development of rare metal sheet material industry.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, a kind of many warm areas of vacuum annealing furnace uniform temperature Controlling System and control method thereof are provided, its temperature-controlled precision height, uniform temperature is good, reliability is high, adaptivity and robustness are good, can well satisfy the manufacturing technique requirent of rare metal vacuum annealing furnace.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of many warm areas of large-sized sheet material vacuum annealing furnace uniform temperature Controlling System, it is characterized in that: comprise the corresponding a plurality of temperature controllers that join and the Heating temperature in each heating zone of vacuum annealing furnace is controlled with a plurality of heating zone of vacuum annealing furnace, join with a plurality of temperature controllers respectively and with the corresponding a plurality of power regulators that join and the heating power of vacuum annealing furnace is regulated in a plurality of heating zone of vacuum annealing furnace, the corresponding samming logging that joins and the temperature of each heating zone of vacuum annealing furnace is detected with a plurality of heating zone of vacuum annealing furnace and by RS485 bus and a plurality of temperature controller, the ipc monitor system that a plurality of power regulators and samming logging join and communicate, the industrial computer of described ipc monitor system for samming logging institute detection signal is carried out analyzing and processing and the working process of each temperature controller and each power regulator is monitored.
Described temperature controller and power regulator are five.
Described temperature controller is inner Continental Europe 3504 temperature controllers that are integrated with the PID controller.
Described power regulator is a KTY3S thyristor power regulating eqiupment.
The utility model compared with prior art has the following advantages:
1, the utility model is at many warm area heating of large-sized sheet material vacuum annealing furnace and the unstable characteristics of interference of electrical network, designed many warm areas uniform temperature Controlling System based on industrial computer IPC+ Continental Europe 3504 temperature controllers+KTY3S thyristor power regulating eqiupment+temperature polling instrument, heat-processed realizes monitoring by the ipc monitor system and by RS485 communication temperature control curve and fuzzy-PID control strategy is passed on Continental Europe 3504 temperature controllers of five warm areas together at present, and, the ipc monitor system can also be with the start stop signal of field apparatus, spacing feedback, the warning amount, controlled variable in alarming value and Continental Europe 3504 temperature controllers and the KTY3S thyristor power regulating eqiupment is all gathered up and is presented in the good picture of respective design, can also carry out record, storage, print and on-line operation, intelligent degree height, use simple operation, realized the optimal control of many warm areas of vacuum annealing furnace uniform temperature.
2, the utility model has solved the big difficult problem of many warm areas of large-sized sheet material vacuum annealing furnace Heating temperature tolerance range control difficulty, improved temperature-controlled precision greatly, at the low thermophase below 100 ℃, temperature-controlled precision≤± 5.6 ℃, when the process design temperature after 200 ℃, each warm area temperature can be followed the tracks of the variation of set(ting)value quickly and accurately, and temperature-controlled precision≤± 0.7 ℃ is kept in the constant temperature stage in temperature-controlled precision≤± 2 ℃.
3, the utility model has solved the big difficult problem of the many warm areas of large-scale vacuum annealing furnace heating uniform temperature control difficulty, has improved the furnace temperature uniformity coefficient greatly, in different goal-setting values, and axial furnace temperature uniformity coefficient≤± 2.0 ℃, radially furnace temperature uniformity coefficient≤± 2.0 ℃.
4, improve the tolerance range of large-sized sheet material vacuum annealing furnace heating and temperature control, it is bigger to be subjected to the unstable interferential influence of mains by harmonics, and the utility model adopts KTY3S thyristor power regulating eqiupment to realize the closed loop minute adjustment of vacuum annealing furnace heating power is controlled.The inner master loop of KTY3S thyristor power regulating eqiupment adopts thyristor inverse parallel structure, takes the Power Regulation mode of zero cross fired, and output waveform is the complete cycle ripple, and electrical network is not had harmonic interference.
5, the utility model dynamic response is fast, and stability, adaptivity and robustness are good, can satisfy the manufacturing technique requirent of rare metal vacuum annealing furnace well, has wide practical use at rare metal manufacture fields such as titanium, zirconiums.
In sum, the utlity model has very high temperature-controlled precision and uniform temperature, good reliability and adaptivity and robustness, high and the use simple operation of intelligent degree, satisfy the requirement high of rare metal annealing process to hardware, software and control accuracy, dynamic response is fast, to improving state of the art, stabilized product quality, cutting down the consumption of energy has remarkable economical and social benefit.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Description of reference numerals:
The 1-vacuum annealing furnace; The 2-temperature controller; The 3-power regulator;
4-samming logging; 5-ipc monitor system.
Embodiment
As shown in Figure 1, the utility model comprises the corresponding a plurality of temperature controllers 2 that join and the Heating temperature in vacuum annealing furnace 1 each heating zone is controlled with a plurality of heating zone of vacuum annealing furnace 1, join with a plurality of temperature controllers 2 respectively and with the corresponding a plurality of power regulators 3 that join and the heating power of vacuum annealing furnace 1 is regulated in a plurality of heating zone of vacuum annealing furnace 1, the corresponding samming logging 4 that joins and the temperature of vacuum annealing furnace 1 each heating zone is detected with a plurality of heating zone of vacuum annealing furnace 1 and by RS485 bus and a plurality of temperature controller 2, the ipc monitor system 5 that a plurality of power regulators 3 and samming logging 4 join and communicate, the industrial computer of described ipc monitor system 5 for 4 detection signals of samming logging are carried out analyzing and processing and the working process of each temperature controller 2 and each power regulator 3 is monitored.
In the present embodiment, described temperature controller 2 and power regulator 3 are five.Described temperature controller 2 is inner Continental Europe 3504 temperature controllers that are integrated with the PID controller, Continental Europe 3504 temperature controller controlled variable precision are high and have a parameter self-tuning function, can in system, set many group pid parameters, can pass through process values PV, set(ting)value SP, deviate Error, output valve OP, the modes such as Set, outside input value Rem of manually setting decide uses for which group pid parameter.Described power regulator 3 is a KTY3S thyristor power regulating eqiupment, and the inner master loop of KTY3S thyristor power regulating eqiupment adopts thyristor inverse parallel structure, takes the Power Regulation mode of zero cross fired, and output waveform is the complete cycle ripple, and electrical network is not had harmonic interference.
Working process of the present utility model is: 1, in ipc monitor system 5 system data is carried out initialize; 2, ipc monitor system 5 receives the Heating temperature set(ting)value L (n) of input, and make poorly of the Heating temperature sampled value y (n) that Heating temperature set(ting)value L (n) and current samming logging 4 are collected, and calculate the absolute value of each sampling instant temperature deviation e (n) | e (n) |=| L (n)-y (n) | and the absolute value of temperature deviation velocity of variation ec (n) | ec (n) |=| e (n)-e (n-1) |; 3, adopt fuzzy reasoning method that the controlled variable that the PID controller will use is carried out on-line tuning: at first, in ipc monitor system 5, use the absolute value of the language of obfuscation with temperature deviation e (n) | e (n) | with the absolute value of temperature deviation velocity of variation ec (n) | ec (n) | scope dwindle, obtain two fuzzy language variable e (n) and ec (n), and elect the language value of e (n) as B
1, M
1, S
1Third gear is with fuzzy set { B
1, M
1, S
1Represent B wherein
1Representative is big, M
1In the representative, S
1Represent little, i.e. e (n)={ B
1, M
1, S
1, elect the language value of ec (n) as B
2, M
2, S
2Third gear is with fuzzy set { B
2, M
2, S
2Represent B wherein
2Representative is big, M
2In the representative, S
2Represent little, i.e. e (n)={ B
2, M
2, S
2; Then, absolute value at different temperature deviation e (n) | e (n) | with the absolute value of temperature deviation velocity of variation ec (n) | ec (n) |, put out the fuzzy reasoning strategy of pid control parameter in order and in ipc monitor system 5, the fuzzy reasoning strategy is written as fuzzy reasoning software, the fuzzy reasoning strategy can be described as: when | e (n) | when big, in order to make system have tracking performance preferably, should get bigger K
pWith less T
d, for fear of system response bigger overshoot appears simultaneously, and the reply integral action is limited, and gets T usually
i=0; When | e (n) | and | ec (n) | when moderate, have less overshoot, K for making system
pShould obtain littler, in this case, T
dValue bigger to the influence of system, T
iValue want suitably; As | e (n) | hour, have stability preferably, K for making system
pAnd T
iAll should obtain big, simultaneously for avoiding system near set(ting)value, to occur vibrating, and the taking into account system interference free performance, as | ec (n) | T than greatly the time
dCan obtain littler, | ec (n) | hour, T
dDesirable big; At last, select five kinds of different working ordeies of vacuum annealing furnace 1 to debug, five kinds of different working ordeies are respectively: A, the 500 ℃ of unloaded operation in vacuum annealing furnace 1 body of heater stage casing; 500 ℃ of unloaded operation of fire door before B, the vacuum annealing furnace 1; C, 500 ℃ of unloaded operation of vacuum annealing furnace 1 back fire door; D, the 500 ℃ of bands charging tray work of vacuum annealing furnace 1 body of heater stage casing; E, vacuum annealing furnace 1 body of heater stage casing 500 ℃ of bands charging tray and material work, ipc monitor system 5 call the fuzzy reasoning software real-time online of writing adjust draw five groups of pid control parameters K '
P1, T '
I1, T '
D1, K '
P2, T '
I2, T '
D2, K '
P3, T '
I3, T '
D3, K '
P4, T '
I4, T '
D4And K '
P5, T '
I5, T '
D5, and the five groups of pid control parameters that draw of will adjusting are exported to temperature controller 2; 4, temperature controller 2 reception ipc monitor systems 5 export to its five groups of pid control parameters and utilize the parameter self-tuning function that himself has to adjust and draw five groups of pid control parameter { K
P1, T
I1, T
D1, { K
P2, T
I2, T
D2, { K
P3, T
I3, T
D3, { K
P4, T
I4, T
D4And { K
P5, T
I5, T
D5; 5, temperature controller 2 is realized the conversion of five groups of pid control parameters according to ipc monitor system 5 given outside input values, select wherein one group of pid control parameter and manipulated variable be converted to 4-20mA continually varying control signal to export to power regulator 3, power regulator 3 reception temperature controllers 2 are exported to its control signal and the output heating power are regulated, and realize the control to vacuum annealing furnace 1 heating power; Particularly, power regulator 3 will receive the 4-20mA continually varying control signal by temperature controller 2 outputs, sending into cycle switch modulates, cycle switch exports that a series of pulse widths are fixed, the switching value signal of variable period, control thyristor switching time ratio, change the heating power of vacuum annealing furnace 1.The cycle of being characterized in follows the setter outward current and changes, has good linear relationship, make the size of synthetic square-wave voltage by signalling current, the mean power of vacuum annealing furnace 1 heating is regulated on ratio ground continuously in the 0%-100% scope, to keep furnace temperature constant; 6, the temperature of 4 pairs of vacuum annealing furnace 1 each heating zone of temperature polling instrument is gathered and the temperature signal that collects is sent to ipc monitor system 5; Particularly, place the warm support of mark in vacuum annealing furnace 1 body of heater, and 15 temperature thermocouples evenly are installed on support, wherein 5 temperature thermocouples distribute along the vacuum annealing furnace axis, each warm area is installed one, other 10 temperature thermocouples are divided into two-layer, 5 every layer, be evenly distributed in the stove on the central cross-section by M shape, samming logging 4 is gathered the temperature signal of five heating zone in the measured body of heater of temperature thermocouple and is fed back to the ipc monitor system after treatment, constitutes whole heating closed loop control system; 7, ipc monitor system 5 receive the temperature signal of each heating zone that temperature polling instruments 4 are collected and the temperature of each heating zone is done in twos poor, when temperature head during greater than 5 ℃, ipc monitor system 5 is called after the part of finishing in advance adjusts software pid control parameter is carried out part adjustment; Otherwise, when temperature head all is not more than 5 ℃, do not carry out part adjustment.
In addition, ipc monitor system 5 has not only realized the on-line optimization adjustment of pid control parameter by establishment fuzzy reasoning software and local adjustment software, controlled variable in the start stop signal of field apparatus, spacing feedback, warning amount, alarming value and temperature controller 2 and the power regulator 3 all can also be gathered up and is presented in the good picture of respective design, can also write down, store, printing and on-line operation.
Test result shows, the utlity model has very high temperature-controlled precision and uniform temperature, good reliability and adaptivity and robustness, high and the use simple operation of intelligent degree, satisfy the requirement high of rare metal annealing process to hardware, software and control accuracy, dynamic response is fast, to improving state of the art, stabilized product quality, cutting down the consumption of energy has remarkable economical and social benefit, is convenient to promote the use of.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of technical solutions of the utility model according to the utility model technical spirit.
Claims (4)
1. many warm areas of large-sized sheet material vacuum annealing furnace uniform temperature Controlling System, it is characterized in that: comprise the corresponding a plurality of temperature controllers (2) that join and the Heating temperature in each heating zone of vacuum annealing furnace (1) is controlled with a plurality of heating zone of vacuum annealing furnace (1), join with a plurality of temperature controllers (2) respectively and with the corresponding a plurality of power regulators (3) that join and the heating power of vacuum annealing furnace (1) is regulated in a plurality of heating zone of vacuum annealing furnace (1), the corresponding samming logging (4) that joins and the temperature of each heating zone of vacuum annealing furnace (1) is detected with a plurality of heating zone of vacuum annealing furnace (1) and by RS 485 buses and a plurality of temperature controller (2), the ipc monitor system (5) that a plurality of power regulators (3) and samming logging (4) join and communicate, the industrial computer of described ipc monitor system (5) for samming logging (4) institute detection signal is carried out analyzing and processing and the working process of each temperature controller (2) and each power regulator (3) is monitored.
2. according to many warm areas of the described large-sized sheet material vacuum annealing furnace of claim 1 uniform temperature Controlling System, it is characterized in that: described temperature controller (2) and power regulator (3) are five.
3. according to claim 1 or 2 described many warm areas of large-sized sheet material vacuum annealing furnace uniform temperature Controlling System, it is characterized in that: described temperature controller (2) is inner Continental Europe 3504 temperature controllers that are integrated with the PID controller.
4. according to claim 1 or 2 described many warm areas of large-sized sheet material vacuum annealing furnace uniform temperature Controlling System, it is characterized in that: described power regulator (3) is a KTY3S thyristor power regulating eqiupment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020568344XU CN201809411U (en) | 2010-10-19 | 2010-10-19 | Large-sized plate vacuum annealing furnace multi-temperature zone temperature uniformity control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020568344XU CN201809411U (en) | 2010-10-19 | 2010-10-19 | Large-sized plate vacuum annealing furnace multi-temperature zone temperature uniformity control system |
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| CN201809411U true CN201809411U (en) | 2011-04-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104451119A (en) * | 2014-10-27 | 2015-03-25 | 山东钢铁股份有限公司 | Temperature control system and method of gas car-bottom heat treating furnace |
| CN104911330A (en) * | 2015-05-28 | 2015-09-16 | 中国兵器工业新技术推广研究所 | Gas type roller hearth furnace temperature control method and device |
| CN108955249A (en) * | 2018-07-20 | 2018-12-07 | 无锡中工热控科技有限公司 | A kind of continuous tunnel furnace temperature control system and control method |
-
2010
- 2010-10-19 CN CN201020568344XU patent/CN201809411U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104451119A (en) * | 2014-10-27 | 2015-03-25 | 山东钢铁股份有限公司 | Temperature control system and method of gas car-bottom heat treating furnace |
| CN104911330A (en) * | 2015-05-28 | 2015-09-16 | 中国兵器工业新技术推广研究所 | Gas type roller hearth furnace temperature control method and device |
| CN104911330B (en) * | 2015-05-28 | 2017-05-17 | 中国兵器工业新技术推广研究所 | Gas type roller hearth furnace temperature control method and device |
| CN108955249A (en) * | 2018-07-20 | 2018-12-07 | 无锡中工热控科技有限公司 | A kind of continuous tunnel furnace temperature control system and control method |
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| Date | Code | Title | Description |
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| 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: 20110427 Termination date: 20131019 |