CN113816588B - Glass liquid platinum channel flow control method, device and system and storage medium - Google Patents
Glass liquid platinum channel flow control method, device and system and storage medium Download PDFInfo
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- CN113816588B CN113816588B CN202111013177.1A CN202111013177A CN113816588B CN 113816588 B CN113816588 B CN 113816588B CN 202111013177 A CN202111013177 A CN 202111013177A CN 113816588 B CN113816588 B CN 113816588B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/18—Stirring devices; Homogenisation
- C03B5/183—Stirring devices; Homogenisation using thermal means, e.g. for creating convection currents
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
- C03B7/005—Controlling, regulating or measuring
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
- C03B7/02—Forehearths, i.e. feeder channels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The embodiment of the invention provides a method, a device, a system and a storage medium for controlling the flow of a glass liquid platinum channel, and relates to the technical field of glass liquid flow control. The method comprises the following steps: acquiring liquid level height data of glass liquid in a feed pipe; and adjusting the temperature of the cooling pipe and the feeding pipe according to the liquid level height data until the liquid level height of the glass liquid in the feeding pipe reaches a liquid level height reference value. According to the technical scheme, the liquid level of the glass liquid in the feeding pipe is monitored in real time, the temperatures of the cooling pipe and the feeding pipe are adjusted based on the comparison result of the real-time liquid level of the glass liquid and the reference value, and the data feedback is not delayed, so that the flow of the glass liquid can be controlled more accurately compared with the prior art, and the yield of glass products is improved.
Description
Technical Field
The invention relates to the technical field of glass liquid flow control, in particular to a glass liquid platinum channel flow control method, a glass liquid platinum channel flow control device, a glass liquid platinum channel flow control system and a storage medium.
Background
In the manufacturing process of UTG glass substrate glass, TFT substrate glass, LTPS substrate glass and OLED substrate glass, the kiln procedure melts the batch into glass liquid, the glass liquid enters a platinum channel for clarification and adjustment, the glass liquid is sent to a forming procedure after being adjusted by the platinum channel procedure to be manufactured into substrate glass or semi-finished products in other shapes, the semi-finished products are manufactured into finished products after being processed, and then the semi-finished products can be sent to a customer manufacturer for use after being packaged and transported.
With the development of technology, the requirements on glass products are also higher and higher, especially in UTG glass products, because the glass thickness is between 0.03 and 0.1, the flow rate of glass liquid is slightly changed, the thickness of the substrate glass can generate great deviation, so that the products caused by thickness, stress and the like are abandoned, and in the production process of other substrate glass, the flow rate is often changed, so that the thickness change of the products causes the fluctuation of the quality of the products. In the conventional substrate glass process, the flow rate of the glass liquid is controlled by a platinum channel process, and the platinum channel is divided into a clarification section, a stirring section and a cooling feeding section. After flowing out of the channel cooling feeding section, glass liquid reaches a forming process, after the forming process is completed, a substrate is cut into glass plates with certain size according to requirements, then the glass plates can be accurately measured in weight, the weight is multiplied by the corresponding production takt time, the weight is converted into kilogram flow of each hour, the converted flow value is fed back to a platinum channel process, and the platinum channel adjusts the flow rate and the flow of the glass liquid through temperature adjustment of the cooling feeding section. However, since the substrate glass is weighed and converted, the data is generally delayed by 30 minutes or more due to the molding process, and the platinum channel is adjusted according to the data, which results in a certain hysteresis, and large flow deviation, and thus cannot satisfy the production of high quality glass products.
Disclosure of Invention
The embodiment of the invention aims to provide a method, a device, a system and a storage medium for controlling the flow of a glass liquid platinum channel, which are used for solving the problem that the flow of the glass liquid platinum channel is difficult to control accurately in the prior art.
In order to achieve the above object, in a first aspect of the present invention, there is provided a flow control method for a platinum channel of molten glass, the platinum channel includes a clarification section, a stirring section and a cooling feeding section connected in sequence, the cooling feeding section includes a cooling pipe and a feeding pipe, and molten glass flows through the clarification section, the stirring section, the cooling pipe and the feeding pipe in sequence and then reaches a glass forming apparatus; the method comprises the following steps:
s100, acquiring liquid level height data of molten glass in the feed pipe;
and S200, adjusting the temperature of the cooling pipe and the temperature of the feeding pipe according to the liquid level height data until the liquid level height of the glass liquid in the feeding pipe reaches a liquid level height reference value.
Optionally, adjusting the temperature of the cooling pipe and the feeding pipe according to the liquid level height data until the liquid level height of the glass liquid in the feeding pipe reaches a liquid level height reference value, including:
s210, judging the current liquid level height of glass liquid in a feed pipe according to the liquid level height data;
s220, if the current liquid level height of the glass liquid in the feeding pipe is not matched with the liquid level height reference value, adjusting the temperatures of the cooling pipe and the feeding pipe, and executing a step S230; if the current liquid level height of the glass liquid in the feed pipe is matched with the liquid level height reference value, executing step S240;
s230, after a set delay, executing a step S210;
s240, maintaining the current temperature of the cooling pipe and the feeding pipe.
Optionally, adjusting the temperature of the cooling pipe and the feeding pipe according to the liquid level height data includes:
if the current liquid level height of the glass liquid in the feeding pipe is judged to be lower than the liquid level height reference value according to the liquid level height data, controlling the temperature of the cooling pipe and the temperature of the feeding pipe to be reduced;
and if the current liquid level height of the glass liquid is higher than the liquid level height reference value according to the liquid level height data, controlling the temperature rise of the cooling pipe and the feeding pipe.
Optionally, adjusting the temperature of the cooling tube and the feed tube includes: and adjusting the temperature of the cooling pipe and the temperature of the feeding pipe by a predetermined temperature adjustment value.
Optionally, adjusting the temperature of the cooling pipe and the feeding pipe according to the liquid level height data includes:
determining a liquid level difference value between the current liquid level height of the glass liquid in the feed pipe and the liquid level height reference value according to the liquid level height data;
determining a temperature adjustment value corresponding to the liquid level height difference value according to the liquid level height difference value and a temperature adjustment curve; wherein the temperature adjustment curve at least comprises temperature adjustment values corresponding to different liquid level height differences;
and adjusting the temperature of the cooling pipe and the temperature of the feeding pipe according to the temperature adjustment value corresponding to the liquid level height difference value.
Optionally, adjusting the temperature of the cooling pipe and the feeding pipe according to the liquid level height data includes:
acquiring a first temperature of the cooling pipe and a second temperature of the feed pipe;
and respectively adjusting the temperature of the cooling pipe and the temperature of the feeding pipe according to the comparison result of the first temperature and the second temperature and the comparison result of the current liquid level height of the glass liquid in the feeding pipe and the reference value of the liquid level height.
Optionally, according to the comparison result of the first temperature and the second temperature and the comparison result of the current level height of the glass liquid in the feeding pipe and the level height reference value, respectively adjusting the temperature of the cooling pipe and the temperature of the feeding pipe, including:
if the current liquid level height of the glass liquid is lower than the liquid level height reference value and the first temperature is higher than the second temperature, controlling the temperature of the cooling pipe and the temperature of the feeding pipe to be reduced;
if the current liquid level height of the glass liquid is lower than the liquid level height reference value and the first temperature is lower than the second temperature, controlling the temperature of the cooling pipe to be reduced;
if the current liquid level height of the glass liquid is higher than the liquid level height reference value and the first temperature is higher than the second temperature, controlling the temperature of the cooling pipe to rise;
and if the current liquid level height of the glass liquid is higher than the liquid level height reference value and the first temperature is lower than the second temperature, controlling the temperature rise of the cooling pipe and the feeding pipe.
In a second aspect of the present invention, there is provided a device for controlling a flow rate of a platinum channel for molten glass, the device comprising:
the data acquisition module is configured to acquire liquid level height data of molten glass in the feed pipe;
and the control module is configured to adjust the temperature of the cooling pipe and the temperature of the feeding pipe according to the liquid level height data until the liquid level height of glass liquid in the feeding pipe reaches a liquid level height reference value.
In a third aspect of the present invention, there is provided a molten glass platinum channel flow control system, the system comprising:
the liquid level sensor is used for collecting liquid level height data of glass liquid in the feed pipe; and
the glass liquid platinum channel flow control device.
In a fourth aspect of the present invention, there is provided a storage medium storing a computer program which, when processed and executed, implements the above-described glass-liquid platinum channel flow control method.
According to the technical scheme, the liquid level of the glass liquid in the feeding pipe is monitored in real time, the temperatures of the cooling pipe and the feeding pipe are adjusted based on the comparison result of the real-time liquid level of the glass liquid and the reference value, and the data feedback is not delayed, so that the flow of the glass liquid can be controlled more accurately compared with the prior art, and the yield of glass products is improved.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain, without limitation, the embodiments of the invention. In the drawings:
FIG. 1 is a flow chart of a method for controlling the flow rate of a platinum channel of molten glass according to a preferred embodiment of the present invention;
FIG. 2 is a schematic view of a platinum channel structure provided in a preferred embodiment of the present invention;
fig. 3 is a schematic block diagram of a flow control device for a platinum glass channel according to a preferred embodiment of the present invention.
Description of the reference numerals
1-clarification section, 2-stirring section, 3-cooling feeding section, 301-cooling pipe, 302-feeding pipe, 401-radioactive source, 402-receiver.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
As shown in fig. 1, in a first aspect of the present embodiment, a flow control method for a platinum channel of molten glass is provided, where the platinum channel includes a fining section 1, a stirring section 2 and a cooling supply section 3 connected in sequence, the cooling supply section 3 includes a cooling pipe 301 and a supply pipe 302, and molten glass flows through the fining section 1, the stirring section 2, the cooling pipe 301 and the supply pipe 302 in sequence and then reaches a glass forming apparatus; the method comprises the following steps:
s100, acquiring liquid level height data of molten glass in a feed pipe 302;
and S200, adjusting the temperature of the cooling pipe 301 and the temperature of the feeding pipe 302 according to the liquid level height data until the liquid level height of the glass liquid in the feeding pipe 302 reaches a liquid level height reference value.
In this way, according to the embodiment, the liquid level of the glass liquid in the feeding pipe 302 is monitored in real time, the temperatures of the cooling pipe 301 and the feeding pipe 302 are adjusted based on the comparison result of the real-time liquid level of the glass liquid and the reference value, and the data feedback is not delayed, so that the flow of the glass liquid can be controlled more accurately than the prior art, and the yield of glass products is improved.
Specifically, as shown in fig. 2, the platinum channel is divided into a fining section 1, a stirring section 2 and a cooling supply section 3, wherein the cooling supply section 3 comprises a cooling pipe 301 and a supply pipe 302, in the process of manufacturing the substrate glass, glass liquid sequentially flows through the fining section 1, the stirring section 2 and finally flows out of the channel cooling supply section 3, and then reaches a forming process, after the substrate is drawn, the formed substrate is cut into glass plates with certain size according to requirements, the glass flow rate of the platinum channel is adjusted by weighing and converting the formed substrate glass in the prior art, but due to the fact that the data has long time hysteresis, the hysteresis is generally more than 30 minutes, and if abnormal conditions affecting the flow rate occur in the 30 minutes, the situation that the adjustment is opposite occurs, and larger fluctuation is caused to the production. The flow of the glass liquid is regulated by adopting a weighing conversion method, the flow deviation is about +/-3 kg, even about +/-5 kg, the deviation can cause great influence on the production of high-quality glass products, and particularly on the substrate glass with high flow deviation precision and small deviation, the traditional control mode can not meet the production requirement. In addition, if the forming equipment fails and cannot be drawn into a plate, and the weighing equipment fails and cannot be weighed, hysteresis and deviation of feedback data can be further amplified, after the forming process is recovered or the weighing equipment fails and is removed, the time is usually up to several hours or days, at this time, a platinum channel cannot be used for flow adjustment according to the feedback data, seven pairs of flow adjustment can lose basis, the adjustment can only be stabilized according to experience, when the production is recovered, the glass flow value often deviates greatly, exceeds +/-5 kg and even reaches +/-20 kg, at this time, the flow needs to be re-stabilized from a kiln process to a channel process, after the flow is stabilized, the forming process can only have production conditions, the whole stabilizing process is influenced by experience of staff, the production influence is usually up to more than 2 days, and the quality and the production efficiency of the substrate glass are greatly influenced. Therefore, in order to solve the technical problem, the method for controlling the flow rate of the glass liquid platinum channel according to the present embodiment monitors the liquid level of the glass liquid in the feed pipe 302 in real time and adjusts the temperatures of the cooling pipe 301 and the feed pipe 302 according to the liquid level, and the feedback data for temperature adjustment, that is, the real-time liquid level data, has no data lag problem, thereby realizing closed-loop control of the temperature of the cooling feed section 3, thoroughly solving the above-mentioned problems in the prior art, and effectively improving the flow rate control precision. The flow rate of the glass liquid can be monitored by installing a liquid level meter above the feed pipe 302, for example, a non-contact type ray liquid level meter can be adopted, the radioactive source 401 and the receiver 402 of the liquid level meter are symmetrically installed on the pipe wall of the feed pipe 302, the installation height of the radioactive source 401 and the installation height of the receiver 402 are predetermined liquid level height reference values, thus the liquid level height of the glass liquid in the feed pipe 302 can be monitored in real time by the liquid level meter and is located above or below the liquid level height reference values, and the temperature control of the cooling pipe 301 and the feed pipe 302 can be further determined according to the liquid level height of the glass liquid in the feed pipe 302 and the position above or below the liquid level height reference values. As the viscosity of the glass liquid is affected by the temperature, the lower the temperature is, the higher the viscosity of the glass liquid is, and the smaller the flow of the glass liquid is; conversely, the higher the temperature, the lower the viscosity of the glass liquid, the larger the flow rate of the glass liquid, so the current flow rate of the glass liquid can be judged by the liquid level height of the glass liquid in the feed pipe 302, and the temperatures of the cooling pipe 301 and the feed pipe 302 can be further judged. Therefore, in step S200, the temperature adjustment of the cooling tube 301 and the feeding tube 302 according to the liquid level data includes: if the current liquid level of the glass liquid in the feeding pipe is judged to be lower than the liquid level reference value according to the liquid level height data, controlling the temperature of the cooling pipe 301 and the temperature of the feeding pipe 302 to be reduced; if the current liquid level of the glass liquid is higher than the liquid level reference value according to the liquid level height data, the temperature rise of the cooling pipe 301 and the feeding pipe 302 is controlled. For example, if the level of the glass liquid in the feed pipe 302 is higher than the level reference value, it indicates that the flow rate of the glass liquid is too small, the temperatures of the cooling pipe 301 and the feed pipe 302 need to be raised to reduce the viscosity of the glass liquid, thereby increasing the flow rate of the glass liquid; conversely, if the level of the molten glass in the feed pipe 302 is lower than the level reference value, the flow rate of the molten glass is larger, and the temperatures of the cooling pipe 301 and the feed pipe 302 need to be reduced to increase the viscosity of the molten glass, thereby reducing the flow rate of the molten glass. In order to ensure the accuracy of flow control, for temperature control, the height variation range of the liquid level is controlled within +/-1 mm according to each temperature adjustment, for example, corresponding data of the temperature adjustment and the liquid level height variation of the glass liquid in the feed pipe 302 can be obtained through experimental test in advance, a fitting curve is generated, and then the temperature value which should be adjusted each time when the liquid level height variation range is within +/-1 mm is determined. In order to further improve the control accuracy, as a more preferable parameter, a temperature value corresponding to a height variation range of the liquid level controlled within ±0.5mm is used as the temperature adjustment value for each adjustment of the temperature. Meanwhile, the weight and the converted value of the hysteresis feedback can be used as references for further correcting and adjusting the temperature value.
In step S200, adjusting the temperature of the cooling pipe 301 and the feeding pipe 302 according to the liquid level data until the liquid level of the glass liquid in the feeding pipe 302 reaches the liquid level reference value, including:
s210, judging the current liquid level height of glass liquid in a feed pipe according to the liquid level height data;
s220, if the current liquid level height of the glass liquid in the feeding pipe is not matched with the liquid level height reference value, adjusting the temperatures of the cooling pipe 301 and the feeding pipe 302, and executing step S230; if the current liquid level height of the glass liquid in the feed pipe is matched with the liquid level height reference value, executing step S240;
s230, after a set delay, executing a step S210;
s240, maintaining the current temperature of the cooling pipe 301 and the feeding pipe 302.
In order to avoid the influence of temperature adjustment, after each time of temperature adjustment, the time delay needs to be set at intervals to perform the next adjustment, for example, the time delay can be set to be 10-20 minutes, after the time delay is set, after the influence caused by the last time of temperature adjustment is stable, the next adjustment is performed again until the liquid level height of the glass liquid in the feed pipe 302 is consistent with the height corresponding to the liquid level height reference value or is within a certain set range of +/-Xmm of the liquid level height reference value, the temperature of the cooling pipe 301 and the feed pipe 302 is not adjusted any more, and the current temperatures of the cooling pipe 301 and the feed pipe 302 are maintained. By controlling the interval time of temperature adjustment, the influence of temperature control adjustment can be effectively buffered, and the control accuracy is improved.
Further, adjusting the temperature of the cooling tube 301 and the feeding tube 302 includes: the temperature of the cooling pipe 301 and the temperature of the feed pipe 302 are adjusted by a predetermined temperature adjustment value. For example, each time the temperature adjustment range may be ±0.1 ℃, ±0.2 ℃, ±0.3 ℃, ±0.4 ℃ or ±0.5 ℃, the adjustment range may be determined according to the control accuracy of the liquid level height variation, which is not limited herein.
In order to improve the control accuracy, the present embodiment determines a temperature value for each adjustment according to a level difference between a level and a level reference value, and adjusts the temperatures of the cooling pipe 301 and the feed pipe 302 according to the level data, including: determining a liquid level difference value between the current liquid level height of glass liquid in the feed pipe and a liquid level height reference value according to the liquid level height data; determining a temperature adjustment value corresponding to the liquid level height difference value according to the liquid level height difference value and the temperature adjustment curve; wherein the temperature adjustment curve at least comprises temperature adjustment values corresponding to different liquid level height differences; the temperature of the cooling pipe 301 and the temperature of the feeding pipe 302 are adjusted according to the temperature adjustment value corresponding to the liquid level height difference. For example, if the deviation value of the level height of the glass liquid in the feed pipe 302 from the level height reference value is within ±0.5mm, the temperature adjustment range may be ±0.1 ℃, ±0.2 ℃ or ±0.3 ℃, and the greater the deviation value, the greater the adjustment corresponding range, for example, if the deviation value is 0.3mm, the temperature adjustment range is ±0.1 ℃, and if the deviation value is 0.4mm, the temperature adjustment range is ±0.2 ℃, so that the level height can be rapidly adjusted when the level deviation value is greater. If the deviation value is outside + -0.5 mm, for example within + -1 mm, the temperature adjustment amplitude may be + -0.3 deg.c, -0.4 deg.c, -0.5 deg.c, and the larger the deviation value, the larger the adjustment corresponding amplitude. In the present embodiment, when the liquid level is within a certain range above and below the liquid level reference value, it is considered that the influence of fluctuation in the flow rate of the glass liquid is negligible, and at this time, temperature adjustment is not required. For example, if the deviation between the level height of the glass liquid in the feed pipe 302 and the level height reference value is smaller than a certain threshold value, for example, smaller than 0.2mm, it is considered that the fluctuation of the flow rate has a small influence, and no adjustment is required, it is possible to set the temperature adjustment value corresponding to the level height difference to 0 when the level height difference is smaller than 0.2mm, that is, no temperature adjustment is performed at this time. It can be understood that when the difference between the liquid level height and the liquid level height reference value is specifically smaller than the threshold, the temperature adjustment is not needed, and the control requirement of the actual product can be customized.
Experiments prove that the control accuracy of the glass flow rate in the manufacture of the substrate glass can be effectively improved and the reject ratio of related products can be reduced by controlling the glass flow rate based on the change of the liquid level height of the glass in the feed pipe 302. The experimental comparison results of the method provided in this embodiment and the conventional process for controlling the flow rate of molten glass are shown in tables 1, 2 and 3:
TABLE 1
TABLE 2
TABLE 3 Table 3
According to the experimental example, by adopting the method provided by the embodiment, the glass flow control precision is effectively improved, the defective rate of the product is obviously reduced, and the production efficiency is obviously improved.
To further improve the control accuracy, the temperature of the cooling pipe 301 and the feed pipe 302 is adjusted according to the liquid level height data, including: acquiring a first temperature of the cooling pipe 301 and a second temperature of the feed pipe 302; according to the comparison result of the first temperature and the second temperature and the comparison result of the current level height of the glass liquid in the feeding pipe and the level height reference value, the temperature of the cooling pipe 301 and the temperature of the feeding pipe 302 are respectively adjusted. Further, according to the comparison result of the first temperature and the second temperature and the comparison result of the current level height of the glass liquid in the feed tube and the level height reference value, the temperature of the cooling tube 301 and the temperature of the feed tube 302 are respectively adjusted, including: if the current liquid level of the glass liquid is lower than the liquid level height reference value and the first temperature is higher than the second temperature, controlling the temperature of the cooling pipe 301 and the feeding pipe 302 to be reduced; if the current liquid level height of the glass liquid is lower than the liquid level height reference value and the first temperature is lower than the second temperature, controlling the temperature of the cooling pipe 301 to be reduced; if the current liquid level height of the glass liquid is higher than the liquid level height reference value and the first temperature is higher than the second temperature, controlling the temperature of the cooling pipe 301 to rise; if the current level of the molten glass is higher than the level reference value and the first temperature is lower than the second temperature, the temperature of the cooling pipe 301 and the feeding pipe 302 are controlled to be increased.
Since the temperatures of the cooling pipe 301 and the feeding pipe 302 may deviate, and thus the flow rates of the cooling pipe 301 and the feeding pipe 302 are different, in order to further improve the control accuracy, in one embodiment of the present invention, the temperature sensors disposed on the cooling pipe 301 and the feeding pipe 302 are used to collect the first temperature of the cooling pipe 301 and the second temperature of the feeding pipe 302, and the temperature of the cooling pipe 301 or the temperature of the feeding pipe 302 are controlled according to the temperature of the cooling pipe 301 and the temperature of the feeding pipe 302. Since the glass flow rate of the feed pipe 302 is affected by the glass flow rate of the cooling pipe 301, the glass flow rate can be controlled by taking the temperature of the cooling pipe 301 as a reference, for example, if the current level of the glass is lower than the level reference value, the glass flow rate is larger, if the first temperature is higher than the second temperature, the glass viscosity of the cooling pipe 301 is lower than the glass viscosity of the feed pipe 302, that is, the glass flow rate of the cooling pipe 301 is higher than the glass flow rate of the feed pipe 302, and under the condition that the outlet of the feed pipe 302 is certain, the glass liquid level of the feed pipe 302 is still lower than the level reference value, the flow rates of the cooling pipe 301 and the feed pipe 302 are higher and are at a higher value, and at the same time, the temperature reduction of the cooling pipe 301 and the feed pipe 302 can be controlled simultaneously, so that the liquid level of the feed pipe 302 is fast close to the level reference value; on this basis, if the first temperature is lower than the second temperature, which means that the viscosity of the glass liquid in the cooling tube 301 is higher than that of the glass liquid in the feeding tube 302, that is, the flow rate of the glass liquid in the cooling tube 301 is smaller than that of the glass liquid in the feeding tube 302, the lower liquid level in the feeding tube 302 may be caused by the higher temperature in the feeding tube 302, so as to avoid that the liquid level in the feeding tube 302 exceeds the reference value of the liquid level due to the excessively large adjustment range, and only the temperature of the feeding tube 302 is controlled to be reduced. Similarly, if the current liquid level of the glass liquid is higher than the liquid level height reference value, the flow rate of the glass liquid is smaller, and if the first temperature is higher than the second temperature, the flow rate of the glass liquid is higher than the temperature of the feeding pipe 302 possibly due to the lower temperature of the feeding pipe, so as to avoid that the liquid level of the feeding pipe 302 is lower than the liquid level height reference value due to overlarge adjustment amplitude, and only the temperature of the feeding pipe 302 is controlled to be increased at the moment; if the first temperature is lower than the second temperature, it indicates that the temperatures of the cooling pipe 301 and the feeding pipe 302 are both lower and at a lower value, at this time, the temperatures of the cooling pipe 301 and the feeding pipe 302 can be controlled to be increased simultaneously, so as to increase the flow rates of the cooling pipe 301 and the feeding pipe 302 to make the liquid level of the feeding pipe 302 quickly approach the liquid level reference value.
As shown in fig. 3, in a second aspect of the present invention, there is provided a device for controlling a flow rate of a platinum glass channel, where the device includes: the data acquisition module is configured to acquire liquid level height data of molten glass in the feed pipe; and the control module is configured to adjust the temperature of the cooling pipe and the temperature of the feeding pipe according to the liquid level height data until the liquid level height of the glass liquid in the feeding pipe reaches a liquid level height reference value.
In a third aspect of the present invention, there is provided a molten glass platinum channel flow control system, the system comprising: the liquid level sensor is used for collecting liquid level height data of glass liquid in the feed pipe; the glass liquid platinum channel flow control device.
In a fourth aspect of the present invention, there is provided a storage medium storing a computer program which, when processed and executed, implements the above-described glass-liquid platinum channel flow control method.
In summary, the defects of the prior art greatly plagues the production of the traditional glass products and restrict the quality of the products, especially in the production process of UTG substrate glass, the flow rate of glass liquid is far smaller than that of TFT and LTPS, the thickness of UTG substrate glass is only about one tenth of that of TFT and LTPS substrate glass, and the influence of the precision and stability of the flow rate on the substrate glass is particularly critical, so the defects of the prior art are more obvious and the influence on the production efficiency is more serious. The invention adopts a completely different technical scheme from the prior art, changes the adjustment basis of the glass flow, takes the difference value of the glass liquid level height of the feed pipe and the liquid level height reference value as the adjustment basis, takes the weight of the hysteresis feedback as the reference, effectively improves the timeliness of the glass liquid flow adjustment, solves the problem of no weight feedback caused by forming and weighing faults and the problem of longer production recovery process time, obviously improves the control accuracy of the flow and integrally improves the production efficiency.
The alternative embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the embodiments of the present invention are not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the embodiments of the present invention within the scope of the technical concept of the embodiments of the present invention, and all the simple modifications belong to the protection scope of the embodiments of the present invention.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations of embodiments of the invention are not described in detail.
In addition, any combination of the various embodiments of the present invention may be made, so long as it does not deviate from the idea of the embodiments of the present invention, and it should also be regarded as the disclosure of the embodiments of the present invention.
Claims (7)
1. The platinum channel comprises a clarification section, a stirring section and a cooling feeding section which are sequentially connected, wherein the cooling feeding section comprises a cooling pipe and a feeding pipe, and glass liquid sequentially flows through the clarification section, the stirring section, the cooling pipe and the feeding pipe and then reaches glass forming equipment; characterized in that the method comprises:
s100, acquiring liquid level height data of molten glass in the feed pipe;
s210, judging the current liquid level height of glass liquid in a feed pipe according to the liquid level height data;
s220, if the current liquid level height of the glass liquid in the feeding pipe is not matched with the liquid level height reference value, adjusting the temperatures of the cooling pipe and the feeding pipe, and executing a step S230; if the current liquid level height of the glass liquid in the feed pipe is matched with the liquid level height reference value, executing step S240;
s230, after a set delay, executing a step S210;
s240, maintaining the current temperature of the cooling pipe and the feeding pipe;
adjusting the temperature of the cooling pipe and the feeding pipe according to the liquid level height data, comprising:
if the current liquid level height of the glass liquid in the feeding pipe is judged to be lower than the liquid level height reference value according to the liquid level height data, controlling the temperature of the cooling pipe and the temperature of the feeding pipe to be reduced;
if the current liquid level height of the glass liquid is higher than the liquid level height reference value according to the liquid level height data, controlling the temperature rise of the cooling pipe and the feeding pipe;
adjusting the temperature of the cooling pipe and the feeding pipe according to the liquid level height data, comprising:
determining a liquid level difference value between the current liquid level height of the glass liquid in the feed pipe and the liquid level height reference value according to the liquid level height data;
determining a temperature adjustment value corresponding to the liquid level height difference value according to the liquid level height difference value and a temperature adjustment curve; wherein the temperature adjustment curve at least comprises temperature adjustment values corresponding to different liquid level height differences;
and adjusting the temperature of the cooling pipe and the temperature of the feeding pipe according to the temperature adjustment value corresponding to the liquid level height difference value.
2. The method of claim 1, wherein adjusting the temperature of the cooling tube and the feed tube comprises: and adjusting the temperature of the cooling pipe and the temperature of the feeding pipe by a predetermined temperature adjustment value.
3. The method of claim 1, wherein adjusting the temperature of the cooling tube and the feed tube according to the liquid level height data comprises:
acquiring a first temperature of the cooling pipe and a second temperature of the feed pipe;
and respectively adjusting the temperature of the cooling pipe and the temperature of the feeding pipe according to the comparison result of the first temperature and the second temperature and the comparison result of the current liquid level height of the glass liquid in the feeding pipe and the reference value of the liquid level height.
4. The method according to claim 3, wherein adjusting the temperature of the cooling tube and the temperature of the supply tube according to the comparison result of the first temperature and the second temperature and the comparison result of the current level height of the molten glass in the supply tube and the level height reference value, respectively, comprises:
if the current liquid level height of the glass liquid is lower than the liquid level height reference value and the first temperature is higher than the second temperature, controlling the temperature of the cooling pipe and the temperature of the feeding pipe to be reduced;
if the current liquid level height of the glass liquid is lower than the liquid level height reference value and the first temperature is lower than the second temperature, controlling the temperature of the feeding pipe to be reduced;
if the current liquid level height of the glass liquid is higher than the liquid level height reference value and the first temperature is higher than the second temperature, controlling the temperature of the feeding pipe to rise;
and if the current liquid level height of the glass liquid is higher than the liquid level height reference value and the first temperature is lower than the second temperature, controlling the temperature rise of the cooling pipe and the feeding pipe.
5. A glass liquid platinum channel flow control device, applying the glass liquid platinum channel flow control method of any one of claims 1-4, characterized in that the device comprises:
the data acquisition module is configured to acquire liquid level height data of molten glass in the feed pipe;
and the control module is configured to adjust the temperature of the cooling pipe and the temperature of the feeding pipe according to the liquid level height data until the liquid level height of glass liquid in the feeding pipe reaches a liquid level height reference value.
6. A platinum channel flow control system for a molten glass, the system comprising:
the liquid level sensor is used for collecting liquid level height data of glass liquid in the feed pipe; and
the molten glass platinum channel flow control apparatus of claim 5.
7. A storage medium storing a computer program, wherein the computer program when executed is configured to implement the glass-liquid platinum channel flow control method according to any one of claims 1 to 4.
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