CN107500519A - A kind of glass plate steel process course control method for use - Google Patents
A kind of glass plate steel process course control method for use Download PDFInfo
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- CN107500519A CN107500519A CN201710667740.4A CN201710667740A CN107500519A CN 107500519 A CN107500519 A CN 107500519A CN 201710667740 A CN201710667740 A CN 201710667740A CN 107500519 A CN107500519 A CN 107500519A
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- heating element
- element heater
- glass plate
- threshold value
- heating
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
Abstract
A kind of glass plate steel process course control method for use, after glass plate is sent into heating furnace, monitoring unit monitors heating element heater running parameter in real time, and processing is filtered to heating element heater running parameter, then the heating element heater running parameter after handling after filtering is passed into control unit, the heating element heater running parameter received is compared control unit with the threshold value set, when heating element heater running parameter is after being most worth, when reaching the threshold value of setting during changing again, control unit sends instruction, control cooling blower is opened or is changed into working condition by idling mode.The present invention is monitored in real time by heating element heater running parameter after entering stove to glass, so as to cooling blower Startup time processed, is changed in conventional method using the time as according to estimation cooling blower Startup time.
Description
Technical field
The present invention relates to a kind of production technology of glass, more particularly, to a kind of glass plate steel process process control side
Method.
Background technology
In the tempering handling process of glass plate, first, glass plate is heated to softening temperature in heating furnace（Example
Such as, 600 DEG C to 700 DEG C）, then come out of the stove rapidly into tempering section, glass plate has quickly been cooled down by way of blower fan blowing
Into tempering processing.Wherein, in order to realize the quick cooling of glass plate, for glass plate before coming out of the stove, blower fan must reach one in advance
Fixed rotating speed simultaneously produces enough blast.In the prior art, it is common practice to：Added according to remaining in glass plate heating process
The hot time, the regular hour opens blower fan in advance or control blower fan is changed into working condition, this controlling party by idling mode
Following drawback existing for formula：First, the heat time of glass plate is to be multiplied by time coefficient according to the thickness of glass plate to estimate
, this heat time calculated by experience is very inaccurate, easily causes blower fan to open too early or open too late；When opening
When opening too early, a large amount of wastes of the energy being caused, improving production cost, when opening too late, blast does not reach requirement during tempering
Numerical value, glass finished-product tempering stress can be caused insufficient, product is directly scrapped.Secondly, control process transition relies on operating personnel
Experience and quality, not only increase cost of labor, and be unfavorable for product qualification rate raising and product quality it is steady in a long-term.
The content of the invention
For solution, cooling blower run time is drawn by estimation mode to the purpose of the present invention in the prior art, most
It is easily caused cooling blower to open too early or open too late, so easily causes the waste of the energy and product quality is underproof asks
A kind of topic, there is provided glass plate steel process course control method for use.
To solve the deficiency of above-mentioned technical problem, used technical scheme is the present invention：
A kind of glass plate steel process course control method for use, after glass plate is sent into heating furnace, monitoring unit monitors heating unit in real time
Part running parameter, and processing is filtered to heating element heater running parameter, then by the heating element heater work after handling after filtering
Control unit is passed to as parameter, the heating element heater running parameter received is compared control unit with the threshold value set,
When heating element heater running parameter is after being most worth, when reaching the threshold value of setting during changing again, control unit is sent out
Go out instruction, control cooling blower is opened or is changed into working condition by idling mode.
Described control unit is PLC or PC.
Described heating element heater uses electrical heating elements, and its running parameter is the general power of heating furnace heating element heater；It is described
Heating element heater use electrical heating elements, its running parameter is the general power of heating furnace heating element heater；Glass plate is sent into heating furnace
Afterwards, monitoring unit monitors the general power of heating element heater in real time, and is filtered processing to the general power of heating element heater, and will filtering
The general power of heating element heater is transferred in control unit and compared with the threshold value W1 set after processing, when the general power of heating element heater passes through
After crossing maximum, when being less than or equal to threshold value W1 during decline, control unit sends instruction, control cooling blower open or
Person is changed into working condition by idling mode.
Described monitoring unit is electric energy meter, and the general power of heating element heater is monitored by electric energy meter.
Described threshold value W1=W0K, W0=WOften·MwWherein, K is correction factor, and its span is 0.9≤K≤1.1,
W0For the level threshold value under normal temperature state, WOftenFor under normal temperature state, heating furnace Light Condition and heating when reaching operating temperature
General power, MwThe correction factor run in advance for cooling blower, Mw≥1.1。WOftenNeeded heating furnace no-load running when determining, and
The general power of heating element heater during to monitoring that heating furnace reaches operating temperature is repeatedly monitored, and takes the flat of multiple measurement results
Average, generally measurement 5 times.It is then determined that W0, cooling blower will run in advance before glass is come out of the stove, it is therefore desirable to right
WOftenIt is modified to run cooling blower in advance, using correction factor Mw。
Described heating element heater uses electrical heating elements, and its running parameter is the total current value of the heating element heater of heating furnace,
After glass plate is sent into heating furnace, monitoring unit detects the total current value of heating element heater in real time, and to the total current value of heating element heater
Processing is filtered, then compares the threshold value A 1 that the total current value after filtering process is transferred in control unit with setting, when
The total current value of heating element heater is after maximum, when being less than or equal to threshold value A 1 during decline, the control list of heating furnace
Member sends instruction, and control cooling blower is opened or is changed into working condition by idling mode.
Described monitoring unit is ammeter, and the total current value of heating element heater is monitored by ammeter.
Described threshold value A1=A0K, A0=AOften·MAWherein, K is correction factor, and its span is 0.9≤K≤1.1,
A0For the level threshold value under normal temperature state, AOftenFor under normal temperature state, heating furnace Light Condition and total electricity when reaching operating temperature
Stream, MAThe correction factor run in advance for cooling blower, MA≥1.1。AOftenNeeded heating furnace no-load running when determining, and to prison
The total current value for measuring heating element heater when heating furnace reaches operating temperature is repeatedly monitored, and takes the average value of multiple measurement results
, generally measurement 5 times, it is then determined that A0, blower fan will run in advance before glass is come out of the stove, it is therefore desirable to AOftenRepaiied
Just to run blower fan in advance, using correction factor MA。
For described heating element heater using any one in electrical heating elements or gas heating element, its running parameter is to add
Opening for all heating element heaters is compared in hot stove, and described heating element heater is opened than the quantity for the heating element heater under working condition
Account for the percentage of the quantity of whole heating element heaters；After glass plate is sent into heating furnace, monitoring unit monitors opening for heating element heater in real time
Logical ratio, and opening for the heating element heater that monitoring is obtained is handled than being filtered, then by opening than transmitting after filtering process
Compared in control unit with threshold k 1, when opening than after maximum, being less than during decline or waiting for heating element heater
When threshold k 1, control unit sends instruction, and control cooling blower is opened or is changed into working condition by idling mode.
Described opens than after the quantity by the heating element heater under monitoring unit monitoring state, operation formula works
The total quantity of quantity/heating element heater of heating element heater under state, is calculated.
Described threshold k1=K0K, K0=KOften·MKWherein, K is correction factor, and its span is 0.9≤K≤1.1,
K0For the level threshold value under normal temperature state, KOftenFor under normal temperature state, heating furnace Light Condition is simultaneously open-minded when reaching operating temperature
Than MKThe correction factor run in advance for cooling blower, MK≥1.1。KOftenNeeded heating furnace no-load running when determining, and to prison
Opening than repeatedly being monitored for heating element heater when heating furnace reaches operating temperature is measured, takes the average value of multiple measurement results i.e.
Can, generally measurement 5 times.It is then determined that K0, cooling blower will run in advance before glass plate is come out of the stove, it is therefore desirable to KOftenEnter
Row amendment to run cooling blower in advance, using correction factor MK。
For described heating element heater using any one in electrical heating elements or gas heating element, its running parameter is to add
The disconnection ratio of all heating element heaters in hot stove, the disconnection of the heating element heater for the quantity of the heating element heater under off-state than accounting for
The percentage of the quantity of whole heating element heaters；After glass plate is sent into heating furnace, monitoring unit monitors the disconnection of heating element heater in real time
Than, and the disconnection ratio for monitoring obtained heating element heater is filtered processing, then the disconnection ratio after filtering process is transferred to
Compares with threshold value D1 in control unit, when the disconnection of heating element heater is compared after minimum value, be more than or equal in uphill process
During threshold value D1, control unit sends instruction, and control cooling blower is opened or is changed into working condition by idling mode.
After quantity of the described disconnection than passing through the heating element heater under monitoring unit monitoring state, formula is run：1-
The total quantity of quantity/heating element heater of heating element heater under working condition, is calculated.
Described threshold value D1=D0K, D0=DOften·MDWherein, K is correction factor, and its span is 0.9≤K≤1.1,
D0For the level threshold value under normal temperature state, DOftenFor under normal temperature state, heating furnace Light Condition and disconnection when reaching operating temperature
Than MDThe correction factor run in advance for cooling blower, MD≤0.9。DOftenNeeded heating furnace no-load running when determining, and to prison
Measure the disconnection of heating element heater when heating furnace reaches operating temperature to be monitored than repeatedly, take the average value of multiple measurement results i.e.
Can, generally measurement 5 times.It is then determined that D0, cooling blower will run in advance before glass plate is come out of the stove, it is therefore desirable to DOftenEnter
Row amendment, to run cooling blower in advance, using correction factor MD。
Described heating element heater uses gas heating element, and its running parameter is the gas flow of the heating element heater of heating furnace
Value；After glass plate is sent into heating furnace, monitoring unit monitors the combustion gas stream value of heating element heater in real time, and combustion gas stream value is carried out
Filtering process, then the threshold value R1 that the combustion gas stream value after filtering process is transferred in control unit with setting is compared, when adding
The combustion gas stream value of thermal element is after maximum, and when being less than or equal to threshold value R1 during decline, control unit sends finger
Order, control cooling blower are opened or are changed into working condition by idling mode.
Described monitoring unit is gas flowmeter, and the combustion gas stream value of heating element heater is monitored by gas flowmeter.
Described threshold value R1=R0K, R0=ROften·MRWherein, K is correction factor, and its span is 0.9≤K≤1.1,
R0For the level threshold value under normal temperature state, ROftenFor under normal temperature state, heating furnace Light Condition and combustion gas when reaching operating temperature
Flow value, MRThe correction factor run in advance for blower fan, MR≥1.1。ROftenNeeded heating furnace no-load running when determining, and to prison
The combustion gas stream value for measuring heating element heater when heating furnace reaches operating temperature is repeatedly monitored, and takes the flat of multiple measurement results
Average, generally measurement 5 times.It is then determined that R0, blower fan will run in advance before glass is come out of the stove, it is therefore desirable to ROftenEnter
Row amendment, to run cooling blower in advance, using correction factor MR。
Described threshold value by man-machine interface by being manually input to described control unit.According to corresponding to determining no-load running
Level threshold value, and correction factor corresponding to selection, K selection are adjusted according to environment temperature.Below with the total of heating element heater
Illustrate the choosing method of adjusted coefficient K exemplified by power.If environment temperature is higher than normal temperature, K is generally taken less than 1, because extraneous
Temperature is too high, and heating furnace radiating is reduced, therefore under Light Condition, heat reduction is distributed toward the external world, so as to reduce heating element heater
Caused heat, it is therefore desirable to adjust threshold value reduction；If environment temperature is less than normal temperature, K is generally taken more than 1, because extraneous
Temperature is too low, heating furnace radiating increase, therefore under Light Condition, heat increase is distributed toward the external world, so as to increase heating element heater
Caused heat, it is therefore desirable to adjust threshold value increase, if environment temperature is equal to normal temperature, K takes 1, and as threshold value does not adjust.
MR、MW、MA、MD、MKDetermination be that one of them start-up time the latest is determined according to experiment, then observe the moment
Corresponding gas flow, general power, total current, open than with disconnect ratio, then divided by level threshold value, so that it is determined that one the latest
The correction factor of unlatching.
After determining correction factor, corresponding threshold value is determined after being modified with corresponding level threshold value, then passes through operative employee
The threshold value is input in control unit by people.Or correction factor is input to control unit by operator by man-machine interface
In, control unit calculates corresponding threshold value according to formula.
Described filtering process is that digital filtering is handled or analog filtering is handled.
" operating temperature " in the present invention refers to：In glass plate tempering handling process, heating furnace is to variety classes glass
When plate is heated, set heating-up temperature, the heating-up temperature of the setting can be adjusted according to the species of glass plate, and this is
The common knowledge of those skilled in the art, so being not described in detail.
" threshold value for reaching setting " in the present invention refers to：Heating element heater running parameter is less than or equal to during decline
The threshold value；Or heating element heater running parameter is more than or equal to the threshold value in uphill process.
The beneficial effects of the invention are as follows：
1st, traditional control method of the art using the time as foundation has been broken, by entering heating element heater after stove to glass plate
Running parameter（The general power of heating element heater, total current, open gas flow than either disconnecting ratio or gas heating element
Value）Monitored in real time, when reaching cooling blower operation threshold according to heating element heater running parameter, send instruction control cooling wind
Machine run, change in traditional approach estimate cooling blower run time method, can more science, accurately control cooling
The run time of blower fan, so as to judge the time of running of cooling blower exactly, not only reduce in safety glass production process
Energy consumption, save original sheet glass, and improve the final product quality of safety glass.
2nd, the operation control process of cooling blower is relatively reliable, accurate, eliminates the reliance on experience, the quality of operating personnel, can
To reduce cost of labor；
3rd, equipment is more intelligent, operates, controls simpler, convenient, is advantageous to the stabilization of production technology and product quality.
Brief description of the drawings
Fig. 1 is the general power change curve that electrical heating elements are used in the present invention.
Fig. 2 is the total current change curve that electrical heating elements are used in the present invention.
Fig. 3 be the present invention in using electrical heating elements open than change curve.
Fig. 4 is the change curve of the disconnection ratio using electrical heating elements in the present invention.
Fig. 5 is the change curve of the combustion gas stream value using gas heating element in the present invention.
Embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing, embodiment is as follows：
Embodiment 1
As shown in figure 1, by taking the heating general power of electrical heating elements as an example, the control process of control method of the present invention is as follows：
First, heating furnace to be used is determined, according to the species of hot glass sheet to be added（Such as low radiation coated glass, white glass）、
Thickness information adjusts the operating temperature of heating furnace, and by heating furnace in the case where environment temperature is normal temperature state, no-load running reaches work
Temperature, the total power value of the heating element heater under the state is monitored, and measure five total power values at different moments, to five numerical value
Averaged, the average value is normal temperature threshold value WOften, it is then determined that the correction factor M run in advance according to cooling blowerW,
MWSpan be MW>=1.1, preferably 1.1≤MW≤1.3.Measuring environment temperature, compare correction factor form（The form
Middle correction factor is obtained by following computational methods：The heating furnace no-load running arrival work at a temperature of varying environment is detected respectively
The total power value of heating element heater during temperature, by each total power value divided by W0After be calculated）Correction factor is determined, according to amendment
COEFFICIENT K, MWAnd WOftenPass through formula threshold value W1=W0K, W0=WOften·MwThreshold value is calculated, operator should by man-machine interface
Threshold value W1It is input in control unit.
After glass plate enters heating furnace, monitor the general power of heating element heater in real time by electric energy meter, due to glass plate by
After low-temperature condition enters heating furnace, start to absorb heat, now heating in-furnace temperature will reduce, in order to keep the perseverance of heating furnace
Warm working condition, the heating element heater under working condition will increase, in order to provide more heats, the now heating of heating element heater
General power quickly increases, and reaches invariable after peak within a certain period of time；As glass sheet temperatures gradually rise, glass
Plate temperature progressively reduces with the temperature gap in burner hearth, and now glass draws slowing for heating furnace heat, in heating furnace
The temperature of glass plate tends to be constant, and the quantity under heating element heater is in running order gradually decreases, and the general power of heating element heater is in
Progressively downward trend, when the electric energy meter being connected with heating element heater monitors the general power of heating element heater after maximum, again
Less than or equal to setting threshold value W1 when, as monitor the general power of heating element heater less than or equal to setting during decline
Threshold value W1, that is, for the second time monitor heat general power be less than or equal to setting threshold value W1 when, that is, judge now glass
Plate not yet reaches heating-up temperature t1, but cooling blower reaches the time of running, and cooling blower is come out of the stove earlier than it and run constantly, this
When such as Fig. 1（Curve in this figure is according to the change of the general power of the heating element heater of monitoring, and then data and curves are filtered
Curve map after processing）, i.e., open in T1 moment, drive mechanism action control cooling blower or work be changed into by idling mode
Make state.
Embodiment 2
As shown in Fig. 2 by taking the total current of electrical heating elements as an example, the control process of control method of the present invention is as follows：
Heating furnace to be used is determined first, according to the species of hot glass sheet to be added（Such as low radiation coated glass, white glass）, it is thick
The operating temperature of information adjustment heating furnace is spent, by heating furnace in the case where environment temperature is normal temperature state, no-load running reaches work temperature
Degree, the total current of the heating element heater under the state is monitored, and measure five total currents at different moments, five numerical value are asked
Average value, the average value are normal temperature threshold value AOften, it is then determined that the correction factor M run in advance according to cooling blowerA, MATake
Value scope is MA>=1.1, preferably 1.1≤MA≤1.3.Measuring environment temperature, compare correction factor form（Corrected in the form
Coefficient is obtained by following computational methods：When the heating furnace no-load running at a temperature of detection varying environment reaches operating temperature respectively
The total current value of heating element heater, by each total current value divided by A0After be calculated）Determine correction factor, according to adjusted coefficient K,
MAAnd AOftenPass through formula threshold value A 1= A 0K, A0=AOften·MAIt is calculated threshold value, operator is by man-machine interface by the threshold
Value A 1It is input in control unit.
After glass plate enters heating furnace, monitor the total current of heating element heater in real time by ammeter, due to glass plate by
After low-temperature condition enters heating furnace, start to absorb heat, now heating in-furnace temperature will reduce, in order to keep the perseverance of heating furnace
Warm working condition, it is in running order under heating element heater will increase, in order to providing more heats, now heating element heater
Total current quickly increases, and reaches invariable after peak within a certain period of time；As glass sheet temperatures gradually rise, glass
Plate temperature progressively reduces with the temperature gap in burner hearth, and now glass draws slowing for heating furnace heat, in heating furnace
The temperature of glass plate tends to be constant, and the quantity under heating element heater is in running order gradually decreases, and the total current of heating element heater is in
Progressively downward trend, set when the electric energy meter being connected with heating element heater monitors that the total current of heating element heater is less than or equal to for the second time
During fixed threshold value A 1, threshold value A 1 of the total current less than or equal to setting of heating element heater is as monitored during decline, i.e.,
Judge that now glass plate not yet reaches heating-up temperature t1, but cooling blower reaches the time of running, cooling blower is earlier than it
Come out of the stove and run constantly, now such as Fig. 2（Curve in this figure be according to the change of the total current of the heating element heater of monitoring, it is then right
Data and curves are filtered the curve map after processing）, i.e., at the T1 moment, drive mechanism action control cooling blower open or by
Idling mode is changed into working condition.
Embodiment 3
As shown in figure 3, opening than exemplified by by electrical heating elements, the control process of control method of the present invention is as follows：
Heating furnace to be used is determined first, according to the species of hot glass sheet to be added（Such as low radiation coated glass, white glass）, it is thick
The operating temperature of information adjustment heating furnace is spent, by heating furnace in the case where environment temperature is normal temperature state, no-load running reaches work temperature
Degree, monitor the heating element heater under the state opens ratio, and measure five at different moments open ratio, five numerical value are asked
Average value, the average value are normal temperature threshold kOften, it is then determined that the correction factor M that cooling blower is run in advanceK, MKValue model
Enclose for MK>=1.1, preferably 1.1≤MK≤1.3.Measuring environment temperature, compare adjusted coefficient K form（Correction factor in the form
K is obtained by following computational methods：Add when the heating furnace no-load running at a temperature of detection varying environment reaches operating temperature respectively
Thermal element opens ratio, and ratio divided by K are opened by each0After be calculated）Correction factor is determined, according to adjusted coefficient K, cooling
The correction factor M that blower fan is run in advanceKAnd KOftenPass through formula threshold k 1= K 0K, K0=KOften·MKThreshold value is calculated, operates
Worker is by man-machine interface by the threshold k 1It is input in control unit.
After glass plate enters heating furnace, pass through the quantity of the heating element heater under the real-time monitoring state of monitoring unit
Afterwards, formula is run：The total quantity of quantity/heating element heater of heating element heater under working condition, is calculated opening for heating element heater
Logical ratio.After entering heating furnace by low-temperature condition due to glass plate, start to absorb heat, now heating in-furnace temperature will reduce,
In order to keep constant temperature working condition, it is in running order under heating element heater will increase, opening for heating element heater increases than quick
Add, and reach constant after peak within a certain period of time；As glass sheet temperatures gradually rise, in glass sheet temperatures and burner hearth
Temperature gap progressively reduces, and now glass draws slowing for heating furnace heat, and the temperature of glass plate tends in heating furnace
Constant, the quantity under heating element heater is in running order is gradually decreased, and heating element heater is opened than in progressively downward trend, when adding
Thermal element is that heating element heater is monitored during decline when opening than second less than or equal to the threshold k 1 of setting
The threshold k 1 less than or equal to setting is opened, that is, judges that now glass plate not yet reaches heating-up temperature t1, but cooling blower arrives
The time of running is reached, cooling blower is come out of the stove earlier than it and run constantly, now such as Fig. 3（Curve in this figure is added according to monitoring
Thermal element open than change, then to data and curves be filtered processing after curve map）, i.e., in T1 moment, driving machine
Structure action control cooling blower is opened or is changed into working condition by idling mode.
Embodiment 4
As shown in figure 4, by taking the disconnection ratio of electrical heating elements as an example, the control process of control method of the present invention is as follows：
Heating furnace to be used is determined first, according to the species of hot glass sheet to be added（Such as low radiation coated glass, white glass）, it is thick
The operating temperature of information adjustment heating furnace is spent, by heating furnace in the case where environment temperature is normal temperature state, no-load running reaches work temperature
Degree, the disconnection ratio of the heating element heater under the state is monitored, and measure five disconnection ratios at different moments, five numerical value are asked
Average value, the average value are normal temperature threshold value DOften, it is then determined that the correction factor M that cooling blower is run in advanceD, MDValue model
Enclose for MD≤ 0.9, preferably 0.7≤MD≤0.9.Measuring environment temperature, compare correction factor form（Correction factor in the form
Obtained by following computational methods：Heated when the heating furnace no-load running at a temperature of detection varying environment reaches operating temperature respectively
The disconnection ratio of element, by each disconnection ratio divided by D0After be calculated）Correction factor is determined, according to adjusted coefficient K, cooling wind
The correction factor M that machine is run in advanceDAnd DOftenPass through formula threshold value D1= D 0K, D0=DOften·MDThreshold value, operator is calculated
By man-machine interface by threshold value D1It is input in control unit.
After glass plate enters heating furnace, pass through the quantity of the heating element heater under the real-time monitoring state of monitoring unit
Afterwards, formula is run：The total quantity of quantity/heating element heater of heating element heater under 1- working conditions, is calculated heating element heater
Disconnect ratio.After entering heating furnace by low-temperature condition due to glass plate, start to absorb heat, now heating in-furnace temperature will drop
It is low, in order to keep constant temperature working condition, it is in running order under heating element heater will increase, the disconnection ratio of heating element heater subtracts
It is small, and reach constant after minimum value within a certain period of time；As glass sheet temperatures gradually rise, in glass sheet temperatures and burner hearth
Temperature gap progressively reduces, and now glass draws slowing for heating furnace heat, and the temperature of glass plate tends in heating furnace
Constant, the quantity under heating element heater is in running order gradually decreases, and the disconnection of heating element heater is compared in gradually rising trend, when adding
During the threshold value D1 that the disconnection of thermal element is greater than or equal to setting than second, heating element heater is as monitored in uphill process
Disconnect than the threshold value D1 greater than or equal to setting, that is, judge that now glass plate not yet reaches heating-up temperature t1, but cooling blower
The time of running is reached, wind cooling blower is come out of the stove earlier than it and run constantly, now such as Fig. 4（Curve in this figure is according to monitoring
Then data and curves are filtered the curve map after processing by the change of the disconnection ratio of heating element heater）, i.e., in T1 moment, driving
Mechanism action control cooling blower is opened or is changed into working condition by idling mode.
Embodiment 5
As shown in figure 5, by taking the gas flow of gas heating element as an example, the control process of control method of the present invention is as follows：
Heating furnace to be used is determined first, according to the species of hot glass sheet to be added（Such as low radiation coated glass, white glass）, it is thick
The operating temperature of information adjustment heating furnace is spent, by heating furnace in the case where environment temperature is normal temperature state, no-load running reaches work temperature
Degree, the gas flow of the heating element heater under the state is monitored, and measure five gas flows at different moments, five numerical value are entered
Row is averaged, and the average value is normal temperature threshold value ROften, it is then determined that the correction factor M that cooling blower is run in advanceR, MRTake
Value scope is MR>=1.1, preferably 1.1≤MR≤1.3.Measuring environment temperature, compare correction factor form（Corrected in the form
Coefficient is obtained by following computational methods：When the heating furnace no-load running at a temperature of detection varying environment reaches operating temperature respectively
The gas flow of heating element heater, by each combustion gas stream value divided by R0After be calculated）Correction factor is determined, according to correction factor
K, the correction factor M that blower fan is run in advanceRAnd R0Pass through formula threshold value R1= R 0K, R0=ROften·MRThreshold value is calculated, operates
Worker is by man-machine interface by threshold value R1It is input in control unit.
After glass plate enters heating furnace, total gas flow of heating element heater is monitored in real time by gas flowmeter, due to
After glass plate enters heating furnace by low-temperature condition, start to absorb heat, now heating in-furnace temperature will reduce, in order to keep adding
The constant temperature working condition of hot stove, it is in running order under heating element heater will increase, in order to provide more heats, now plus
The gas flow of thermal element quickly increases, and reaches invariable after peak within a certain period of time；With glass sheet temperatures by
Edge up height, and glass sheet temperatures progressively reduce with the temperature gap in burner hearth, and now glass draws the speed change of heating furnace heat
Slowly, the temperature of glass plate tends to be constant in heating furnace, and the quantity under heating element heater is in running order gradually decreases, gas flow
In progressively downward trend, when the gas flowmeter being connected with heating element heater monitors that the gas flow of heating element heater is less than for the second time
Or equal to setting threshold value R1 when, as monitor the gas flow of heating element heater less than or equal to setting during decline
Threshold value R1, that is, judge that now glass plate not yet reaches heating-up temperature t1, but cooling blower reaches the time of running, wind cooling blower
Come out of the stove earlier than it and run constantly, now such as Fig. 5（Curve in this figure is the change according to the gas flow of the heating element heater of monitoring
Change, then data and curves are filtered with the curve map after processing）, i.e., in T1 moment, drive mechanism action control cooling blower
Open or working condition is changed into by idling mode.
It should be noted that：" normal temperature " in the present invention refers to 25 DEG C, but those skilled in the art are readily apparent that " often
Temperature " replaces with other temperature, so as to obtain corresponding level threshold value.
Technical scheme and embodiment cited by the present invention and non-limiting, with the technical scheme cited by the present invention and
Embodiment is equivalent or effect same approach is all in the range of the present invention protects.
Claims (18)
- A kind of 1. glass plate steel process course control method for use, it is characterised in that：After glass plate is sent into heating furnace, monitoring unit is real When monitor heating element heater running parameter, and processing is filtered to heating element heater running parameter, after then handling after filtering Heating element heater running parameter pass to control unit, control unit is by the heating element heater running parameter received and the threshold of setting Value is compared, when heating element heater running parameter is after being most worth, when reaching the threshold value of setting during changing again, Control unit sends instruction, and control cooling blower is opened or is changed into working condition by idling mode.
- A kind of 2. glass plate steel process course control method for use according to claim 1, it is characterised in that：Described heating Element uses electrical heating elements, and its running parameter is the general power of heating furnace heating element heater；After glass plate is sent into heating furnace, monitoring Unit monitors the general power of heating element heater in real time, and is filtered processing to the general power of heating element heater, and by after filtering process The general power of heating element heater is transferred in control unit and compared with the threshold value W1 set, when the general power of heating element heater is by maximum After value, when being less than or equal to threshold value W1 during decline, control unit sends instruction, and control cooling blower is opened or by idle Fast state is changed into working condition.
- A kind of 3. glass plate steel process course control method for use according to claim 2, it is characterised in that：Described monitoring Unit is electric energy meter.
- A kind of 4. glass plate steel process course control method for use according to claim 2, it is characterised in that：Described threshold value W1=W0K, W0=WOften·MwWherein, K is correction factor, and its span is 0.9≤K≤1.1, W0For the mark under normal temperature state Quasi- threshold value, WOftenFor under normal temperature state, heating furnace Light Condition and heating general power when reaching operating temperature, MwFor cooling blower The correction factor run in advance, Mw≥1.1。
- A kind of 5. glass plate steel process course control method for use according to claim 1, it is characterised in that：Described heating Element uses electrical heating elements, and its running parameter is the total current value of the heating element heater of heating furnace, after glass plate is sent into heating furnace, Monitoring unit detects the total current value of heating element heater in real time, and is filtered processing to the total current value of heating element heater, then will Total current value after filtering process is transferred in control unit and compared with the threshold value A 1 set, when the total current value of heating element heater passes through After crossing maximum, when being less than or equal to threshold value A 1 during decline, the control unit of heating furnace sends instruction, control cooling wind Machine is opened or is changed into working condition by idling mode.
- A kind of 6. glass plate steel process course control method for use according to claim 5, it is characterised in that：Described monitoring Unit is ammeter.
- A kind of 7. glass plate steel process course control method for use according to claim 5, it is characterised in that：Described threshold value A1=A0K, A 0= AOften·MAWherein, K is correction factor, and its span is 0.9≤K≤1.1, W0For under normal temperature state Level threshold value, AOftenFor under normal temperature state, heating furnace Light Condition and total current value when reaching operating temperature, MAFor cooling blower The correction factor run in advance, MA≥1.1。
- A kind of 8. glass plate steel process course control method for use according to claim 1, it is characterised in that：Described heating For element using any one in electrical heating elements or gas heating element, its running parameter is all heating element heaters in heating furnace Open ratio, the number opened than accounting for whole heating element heaters for the quantity of the heating element heater under working condition of described heating element heater The percentage of amount；After glass plate is sent into heating furnace, monitoring unit monitors the ratio of opening of heating element heater in real time, and will monitor what is obtained Heating element heater is opened than being filtered processing, then by opening than being transferred in control unit and threshold k 1 after filtering process Compare, when opening than after maximum, when being less than or equal to threshold k 1 during decline, control unit is sent out for heating element heater Go out instruction, control cooling blower is opened or is changed into working condition by idling mode.
- A kind of 9. glass plate steel process course control method for use according to claim 8, it is characterised in that：Described is open-minded After the quantity by the heating element heater under monitoring unit monitoring state, formula is run:Heating element heater under working condition Quantity/heating element heater total quantity, be calculated.
- A kind of 10. glass plate steel process course control method for use according to claim 8, it is characterised in that：Described threshold Value K1=K0K, K 0= KOften·MKWherein, K is correction factor, and its span is 0.9≤K≤1.1, K0For under normal temperature state Level threshold value, KOftenFor under normal temperature state, heating furnace Light Condition simultaneously opens ratio, M when reaching operating temperatureKFor cooling blower The correction factor run in advance, MK≥1.1。
- A kind of 11. glass plate steel process course control method for use according to claim 1, it is characterised in that：Described adds For thermal element using any one in electrical heating elements or gas heating element, its running parameter is all heating units in heating furnace The disconnection ratio of part, the number disconnected than accounting for whole heating element heaters for the quantity of the heating element heater under off-state of the heating element heater The percentage of amount；After glass plate is sent into heating furnace, monitoring unit monitors the disconnection ratio of heating element heater in real time, and will monitor what is obtained The disconnection ratio of heating element heater is filtered processing, is then transferred to the disconnection ratio after filtering process in control unit and threshold value D1 Compare, when the disconnection of heating element heater is compared after minimum value, and threshold value D1 is more than or equal in uphill process, control unit hair Go out instruction, control cooling blower is opened or is changed into working condition by idling mode.
- A kind of 12. glass plate steel process course control method for use according to claim 11, it is characterised in that：Described is disconnected Open than after the quantity by the heating element heater under monitoring unit monitoring state, running formula：Heating under 1- working conditions The total quantity of quantity/heating element heater of element, is calculated.
- A kind of 13. glass plate steel process course control method for use according to claim 11, it is characterised in that：Described threshold Value D1=D0K, D 0= DOften·MDWherein, K is correction factor, and its span is 0.9≤K≤1.1, D0For under normal temperature state Level threshold value, DOftenFor under normal temperature state, heating furnace Light Condition and disconnection ratio when reaching operating temperature, MDFor cooling blower The correction factor run in advance, MD≤0.9。
- A kind of 14. glass plate steel process course control method for use according to claim 1, it is characterised in that：Described adds Thermal element uses gas heating element, and its running parameter is the combustion gas stream value of the heating element heater of heating furnace；Glass plate, which is sent into, to be added After hot stove, monitoring unit monitors the combustion gas stream value of heating element heater in real time, and is filtered processing to combustion gas stream value, then will Combustion gas stream value after filtering process is transferred in control unit and compared with the threshold value R1 set, when the gas flow of heating element heater Value is after maximum, and when being less than or equal to threshold value R1 during decline, control unit sends instruction, and control cooling blower is opened Open or working condition is changed into by idling mode.
- A kind of 15. glass plate steel process course control method for use according to claim 14, it is characterised in that：Described prison Survey unit is gas flowmeter.
- A kind of 16. glass plate steel process course control method for use according to claim 14, it is characterised in that：Described threshold Value R1=R0K, R 0= ROften·MRWherein, K is correction factor, and its span is 0.9≤K≤1.1, R0For under normal temperature state Level threshold value, ROftenFor under normal temperature state, heating furnace Light Condition and combustion gas stream value when reaching operating temperature, MRFor cooling The correction factor that blower fan is run in advance, MR≥1.1。
- 17. a kind of steel process course control method for use according to claim 1,2,4,5,7,8,10,11,13,14 or 16, It is characterized in that：Described threshold value by man-machine interface by being manually input to described control unit.
- A kind of 18. glass plate steel process process approach according to claim 1,2,5,8,11 or 14, it is characterised in that： Described filtering process is that digital filtering is handled or analog filtering is handled.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019029180A1 (en) * | 2017-08-07 | 2019-02-14 | 洛阳兰迪玻璃机器股份有限公司 | Method for controlling discharging of glass plate in glass plate tempering technology process |
| CN114115387A (en) * | 2021-11-24 | 2022-03-01 | 湖南开启时代生物科技有限责任公司 | Constant temperature control method for portable medical heat-preservation transfer box |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4807144A (en) * | 1986-12-02 | 1989-02-21 | Glasstech International L.P. | Temperature control system for glass sheet furnace |
| CN104817261A (en) * | 2015-04-28 | 2015-08-05 | 洛阳北方玻璃技术股份有限公司 | Method for controlling glass cooling process during glass toughening |
| CN104891796A (en) * | 2015-05-18 | 2015-09-09 | 洛阳兰迪玻璃机器股份有限公司 | Glass toughening method |
| CN105573350A (en) * | 2015-12-28 | 2016-05-11 | 佛山市索奥斯玻璃技术有限公司 | Frequency automatic tracking control method of cooling fan of glass tempering furnace |
| CN105910648A (en) * | 2016-05-30 | 2016-08-31 | 安瑞装甲材料（芜湖）科技有限公司 | Toughened glass cooling process monitoring system |
-
2017
- 2017-08-07 CN CN201710667740.4A patent/CN107500519B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4807144A (en) * | 1986-12-02 | 1989-02-21 | Glasstech International L.P. | Temperature control system for glass sheet furnace |
| CN104817261A (en) * | 2015-04-28 | 2015-08-05 | 洛阳北方玻璃技术股份有限公司 | Method for controlling glass cooling process during glass toughening |
| CN104891796A (en) * | 2015-05-18 | 2015-09-09 | 洛阳兰迪玻璃机器股份有限公司 | Glass toughening method |
| CN105573350A (en) * | 2015-12-28 | 2016-05-11 | 佛山市索奥斯玻璃技术有限公司 | Frequency automatic tracking control method of cooling fan of glass tempering furnace |
| CN105910648A (en) * | 2016-05-30 | 2016-08-31 | 安瑞装甲材料（芜湖）科技有限公司 | Toughened glass cooling process monitoring system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019029180A1 (en) * | 2017-08-07 | 2019-02-14 | 洛阳兰迪玻璃机器股份有限公司 | Method for controlling discharging of glass plate in glass plate tempering technology process |
| EP3657295A4 (en) * | 2017-08-07 | 2020-07-22 | Luoyang Landglass Technology Co., Ltd. | Method for controlling discharging of glass plate in glass plate tempering technology process |
| US11667556B2 (en) | 2017-08-07 | 2023-06-06 | Luoyang Landglass Technology Co., Ltd. | Method for controlling discharging of glass plate in glass plate tempering technology process |
| CN114115387A (en) * | 2021-11-24 | 2022-03-01 | 湖南开启时代生物科技有限责任公司 | Constant temperature control method for portable medical heat-preservation transfer box |
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