阅读说明：本技术 玻璃液铂金通道流量控制方法、装置、系统及存储介质 (Method, device and system for controlling flow of molten glass platinum channel and storage medium ) 是由 李青 李赫然 田红星 胡恒广 闫冬成 于 2021-08-31 设计创作，主要内容包括：本发明实施方式提供一种玻璃液铂金通道流量控制方法、装置、系统及存储介质,涉及玻璃液流量控制技术领域。方法包括：获取供料管中玻璃液的液位高度数据；依据液位高度数据调整冷却管及供料管的温度,直至供料管中玻璃液的液位高度达到液位高度基准值。本发明上述技术方案通过实时监测供料管中玻璃液的液位高度,基于玻璃液的实时液位高度与基准值的比较结果来调整冷却管及供料管的温度,数据反馈没有延时,相比现有技术能够更精确的控制玻璃液的流量,有利于提高玻璃制品的良品率。(The embodiment of the invention provides a method, a device and a system for controlling the flow of a molten glass platinum channel and a storage medium, and relates to the technical field of molten glass flow control. The method comprises the following steps: acquiring liquid level height data of glass liquid in the feeding pipe; and 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. According to the technical scheme, the liquid level height 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 height of the glass liquid and the reference value, data feedback is not delayed, the flow of the glass liquid can be controlled more accurately compared with the prior art, and the improvement of the yield of glass products is facilitated.)

1. A flow control method of a platinum channel of molten glass comprises the steps that the platinum channel comprises a clarification section, a stirring section and a cooling feeding section which are sequentially connected, the cooling feeding section comprises a cooling pipe and a feeding pipe, and the molten glass 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 glass liquid in the feeding pipe;

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.

2. The method for controlling the molten glass platinum channel flow according to claim 1, wherein the step of 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 molten glass in the feeding pipe reaches a liquid level height reference value comprises the following steps:

s210, judging the current liquid level height of the glass liquid in the feeding 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 reference value of the liquid level height, adjusting the temperature of the cooling pipe and the temperature of the feeding pipe, and executing the step S230; if the current liquid level height of the glass liquid in the feeding pipe is matched with the reference value of the liquid level height, executing the step S240;

s230, after the set time delay, executing the step S210;

s240, maintaining the current temperature of the cooling pipe and the feeding pipe.

3. The method for controlling the molten glass platinum channel flow according to claim 2, wherein adjusting the temperature of the cooling pipe and the temperature of the feeding pipe according to the liquid level height data comprises:

if the current liquid level height of the glass liquid in the feeding pipe is judged to be lower than the reference value of the liquid level height according to the liquid level height data, the temperature of the cooling pipe and the temperature of the feeding pipe are controlled to be reduced;

and if the current liquid level height of the glass liquid is judged to be 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.

4. The method of claim 3, wherein adjusting the temperature of the cooling tube and the supply tube comprises: adjusting the temperature of the cooling tube and the feed tube at a predetermined temperature adjustment value.

5. The molten glass platinum channel flow control method according to claim 3, wherein adjusting the temperature of the cooling tube and the feed tube according to the liquid level height data comprises:

determining a liquid level height difference value between the current liquid level height of the glass liquid in the feeding 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 the temperature adjustment curve; the temperature adjusting curve at least comprises temperature adjusting values corresponding to different liquid level height difference values;

and adjusting the temperature of the cooling pipe and the temperature of the feeding pipe according to the temperature adjusting value corresponding to the liquid level height difference value.

6. The molten glass platinum channel flow control method according to claim 3, 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 feeding 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.

7. The method of claim 6, wherein adjusting the temperature of the cooling tube and the temperature of the feed tube according to the comparison of the first temperature and the second temperature and the comparison of the current level height of the molten glass in the feed tube with the reference level height 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 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 of the cooling pipe and the temperature of the feeding pipe to rise.

8. A molten glass platinum channel flow control device applying the molten glass platinum channel flow control method as claimed in any one of claims 1 to 7, characterized in that the device comprises:

a data acquisition module configured to acquire liquid level height data of the molten glass in the feed pipe;

and the control module is configured to adjust the temperatures 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.

9. A molten glass platinum channel flow control system, the system comprising:

the liquid level height sensor is used for acquiring liquid level height data of the glass liquid in the feeding pipe; and

the molten glass platinum channel flow control device of claim 8.

10. A storage medium storing a computer program, wherein the computer program is configured to implement the method for controlling a flow rate of a platinum channel in molten glass according to any one of claims 1 to 7 when the computer program is executed.

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, a kiln process melts batch materials into glass liquid, the glass liquid enters a platinum channel for clarification and adjustment, the glass liquid is adjusted by the platinum channel process and then is sent to a forming process to be made into substrate glass or semi-finished products in other shapes, the semi-finished products are processed into finished products, and then the finished products are packaged and transported to a client manufacturer for use.

With the development of technology, the demand for glass products is increasing, and particularly in UTG glass products, since the thickness of glass is between 0.03 and 0.1, the flow rate of molten glass changes slightly, the thickness of substrate glass generates large deviation, which causes product abandonment due to thickness, stress and the like, and in the production process of other substrate glass, the flow rate changes frequently occur, which causes the condition that the thickness change of the product causes product quality fluctuation. In a conventional glass substrate manufacturing process, the flow rate of molten glass is controlled by a platinum channel process, and the platinum channel is divided into a clarification section, a stirring section and a cooling and feeding section. The glass liquid flows out from the channel cooling feeding section and then reaches the forming process, after the forming is finished, the base plate is cut into glass plates with certain sizes according to requirements, then the glass plates can be accurately measured for weight, then the weight is multiplied by the corresponding production beat and converted into kilogram flow per hour, the converted flow value is fed back to the platinum channel process, and the flow speed and flow of the glass liquid are adjusted by the platinum channel through adjusting the temperature of the cooling feeding section. However, since the substrate glass is weighed and converted, and the molding process is already performed, the data usually lags behind by 30 minutes or more, and the platinum channel is adjusted according to the data, which causes a certain hysteresis, and thus, the flow rate deviation is large, and the production of high-quality glass products cannot be satisfied.

Disclosure of Invention

The invention aims to provide a method, a device and a system for controlling flow based on a glass liquid platinum channel and a storage medium, so as to solve the problem that the flow of the glass liquid platinum channel is difficult to accurately control in the prior art.

In order to achieve the above object, in a first aspect of the present invention, there is provided a method for controlling a flow rate of a platinum channel for molten glass, the platinum channel comprises a fining section, a stirring section and a cooling feeding section which are connected in sequence, the cooling feeding section comprises a cooling pipe and a feeding pipe, and molten glass flows through the fining 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 glass liquid in the feeding pipe;

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 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, including:

s210, judging the current liquid level height of the glass liquid in the feeding 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 reference value of the liquid level height, adjusting the temperature of the cooling pipe and the temperature of the feeding pipe, and executing the step S230; if the current liquid level height of the glass liquid in the feeding pipe is matched with the reference value of the liquid level height, executing the step S240;

s230, after the set time delay, executing the 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 temperature of 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 reference value of the liquid level height according to the liquid level height data, the temperature of the cooling pipe and the temperature of the feeding pipe are controlled to be reduced;

and if the current liquid level height of the glass liquid is judged to be 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 comprises: adjusting the temperature of the cooling tube and the feed tube at a predetermined temperature adjustment value.

Optionally, adjusting the temperature of the cooling pipe and the temperature of the feeding pipe according to the liquid level height data includes:

determining a liquid level height difference value between the current liquid level height of the glass liquid in the feeding 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 the temperature adjustment curve; the temperature adjusting curve at least comprises temperature adjusting values corresponding to different liquid level height difference values;

and adjusting the temperature of the cooling pipe and the temperature of the feeding pipe according to the temperature adjusting value corresponding to the liquid level height difference value.

Optionally, adjusting the temperature of the cooling pipe and the temperature of 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 feeding 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, adjusting the temperature of the cooling pipe and the temperature of the feeding pipe respectively 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 molten glass in the feeding pipe and the reference value of the liquid level height includes:

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 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 of the cooling pipe and the temperature of the feeding pipe to rise.

In a second aspect of the present invention, there is provided a molten glass platinum channel flow control device, to which the above molten glass platinum channel flow control method is applied, the device including:

a data acquisition module configured to acquire liquid level height data of the molten glass in the feed pipe;

and the control module is configured to adjust the temperatures 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.

In a third aspect of the invention, there is provided a molten glass platinum channel flow control system, the system comprising:

the liquid level height sensor is used for acquiring liquid level height data of the glass liquid in the feeding 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 executed by a processor, implements the above-described method for controlling a flow rate of a molten glass platinum channel.

According to the technical scheme, the liquid level height 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 height of the glass liquid and the reference value, data feedback is not delayed, the flow of the glass liquid can be controlled more accurately compared with the prior art, and the improvement of the yield of glass products is facilitated.

Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the 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 the embodiments of the invention without limiting the embodiments of the invention. In the drawings:

FIG. 1 is a flow chart of a method for controlling the flow of a molten glass platinum channel according to a preferred embodiment of the present invention;

FIG. 2 is a schematic diagram of a platinum channel structure provided in a preferred embodiment of the present invention;

fig. 3 is a schematic block diagram of a molten glass platinum channel flow control device 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 detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

As shown in fig. 1, in a first aspect of the present embodiment, there is provided a method for controlling a flow rate of a platinum channel for molten glass, the platinum channel includes a fining section 1, a stirring section 2 and a cooling and feeding section 3 which are connected in sequence, the cooling and feeding section 3 includes a cooling pipe 301 and a feeding pipe 302, and molten glass reaches a glass forming apparatus after flowing through the fining section 1, the stirring section 2, the cooling pipe 301 and the feeding pipe 302 in sequence; the method comprises the following steps:

s100, acquiring liquid level height data of glass liquid in a feeding pipe 302;

s200, adjusting the temperatures of the cooling pipe 301 and 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.

So, this embodiment is through the liquid level height of glass liquid in real-time supervision feeder pipe 302, adjusts the temperature of cooling tube 301 and feeder pipe 302 based on the comparison result of the real-time liquid level height of glass liquid and benchmark value, and data feedback does not have the time delay, compares the flow of the control glass liquid that prior art can be more accurate, is favorable to improving glassware's yields.

Specifically, as shown in fig. 2, the platinum channel is divided into a fining section 1, a stirring section 2 and a cooling feeding section 3, wherein the cooling feeding section 3 includes a cooling pipe 301 and a feeding pipe 302, in the substrate glass manufacturing process, the molten glass sequentially passes through the fining section 1 and the stirring section 2, and finally flows out from the channel cooling feeding section 3, and then reaches the forming process, and the formed substrate is cut into a glass plate with a certain size as required after being drawn, and the glass flow of the platinum channel is adjusted by weighing and converting the formed substrate glass in the prior art, but because the generation of the data has a long time lag, the lag usually reaches more than 30 minutes, and if an abnormal condition affecting the flow occurs within the 30 minutes, an opposite condition occurs, and a larger fluctuation is caused to the production. The flow of the glass liquid is adjusted by adopting a weighing and converting method, the flow deviation is usually about +/-3 kg, even can reach about +/-5 kg, the deviation can cause great influence on the production of high-quality glass products, and particularly for substrate glass requiring high flow deviation and small deviation, the traditional control mode can not meet the production requirement. In addition, if the forming equipment fails and the plate can not be drawn, and the weighing equipment fails and the plate can not be weighed, the hysteresis and deviation of the feedback data are further amplified, and after the molding process is recovered or the weighing equipment is cleared, the time usually reaches several hours or several days, the platinum channel can not adjust the flow according to the feedback data, the seven flow adjustments lose the basis and can only be stabilized according to experience, when the production is recovered, the glass flow value is often greatly deviated and exceeds +/-5 kg or even reaches more than +/-20 kg, the flow needs to be re-stabilized from the kiln process to the channel process, after the flow is stabilized, the forming process can have production conditions, the whole stable process is also influenced by the experience of workers, the production influence usually reaches 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, in the method for controlling the flow rate of the platinum channel in the molten glass according to the embodiment, the liquid level height of the molten glass in the feeding pipe 302 is monitored in real time, and the temperatures of the cooling pipe 301 and the feeding pipe 302 are adjusted according to the liquid level height, so that there is no data lag in feedback data for temperature adjustment, that is, in real time, the liquid level height data, and thus closed-loop control of the temperature of the cooling and feeding section 3 is realized, the above-mentioned problems in the prior art can be thoroughly solved, and the flow rate control precision is effectively improved. The flow monitoring of the glass liquid can be realized by installing a liquid level meter above the feeding pipe 302, for example, a non-contact ray liquid level meter can be adopted, the radiation source 401 and the receiver 402 of the liquid level meter are symmetrically installed on the pipe wall of the feeding pipe 302, the installation height of the radiation source 401 and the receiver 402 is a predetermined liquid level height reference value, thus, the liquid level height of the glass liquid in the feeding pipe 302 can be monitored in real time through the liquid level meter to be located above or below the liquid level height reference value, and then the temperature control of the cooling pipe 301 and the feeding pipe 302 can be determined according to the liquid level height of the glass liquid in the feeding pipe 302 and the upper or lower part of the liquid level height reference value. The viscosity of the glass liquid is influenced by the temperature, and the lower the temperature is, the higher the viscosity of the glass liquid is, and the smaller the flow rate of the glass liquid is; on the contrary, the higher the temperature is, the lower the viscosity of the glass liquid is, the larger the flow rate of the glass liquid is, so that the current flow rate of the glass liquid can be determined by the liquid level height of the glass liquid in the feed pipe 302, and the temperature of the cooling pipe 301 and the feed pipe 302 can be determined. Therefore, the adjusting the temperature of the cooling pipe 301 and the feeding pipe 302 according to the liquid level height data in step S200 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, the temperature of the cooling pipe 301 and the temperature of the feeding pipe 302 are controlled to be reduced; and if the current liquid level height of the glass liquid is judged to be higher than the liquid level height 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 rise. For example, if the liquid level of the molten glass in the feeding pipe 302 is higher than the reference value of the liquid level height, which indicates that the flow rate of the molten glass is too small, the temperature of the cooling pipe 301 and the feeding pipe 302 needs to be raised to reduce the viscosity of the molten glass, thereby increasing the flow rate of the molten glass; on the contrary, if the liquid level of the glass liquid in the feeding pipe 302 is lower than the liquid level reference value, which indicates that the glass liquid flow is too large, the temperature of the cooling pipe 301 and the feeding pipe 302 needs to be lowered to increase the viscosity of the glass liquid, thereby reducing the flow of the glass liquid. In order to ensure the accuracy of the flow control, for the temperature control, the height variation range of the liquid level is controlled within ± 1mm for each temperature adjustment, for example, the corresponding data of the temperature adjustment and the liquid level height variation of the glass liquid in the supply pipe 302 can be obtained through experimental tests in advance, a fitting curve is generated, and then the temperature value to be adjusted each time when the liquid level height variation range is within ± 1mm is determined. In order to further improve the control accuracy, as a more preferable parameter, a temperature value corresponding to the range of the height variation of the liquid level controlled within ± 0.5mm per temperature adjustment is used as a temperature adjustment value. Meanwhile, the weight and the converted value of the lag feedback can be used as references for further correcting and adjusting the temperature value.

In step S200, adjusting the temperatures of the cooling pipe 301 and 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 the liquid level height reference value, including:

s210, judging the current liquid level height of the glass liquid in the feeding 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 reference value of the liquid level height, adjusting the temperature of the cooling pipe 301 and the temperature of the feeding pipe 302, and executing the step S230; if the current liquid level height of the glass liquid in the feeding pipe is matched with the reference value of the liquid level height, executing the step S240;

s230, after the set time delay, executing the step S210;

and 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 temperature adjustment is performed each time, next adjustment can be performed only by setting a time delay at intervals, for example, the set time delay may be 10 to 20 minutes, and after the set time delay, and after the influence caused by the previous temperature adjustment is stable, 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 the liquid level height reference value ± Xmm, the temperature of the cooling pipe 301 and the feed pipe 302 is not adjusted any more, and the current temperature of the cooling pipe 301 and the feed pipe 302 is 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 pipe 301 and the feeding pipe 302 includes: the temperatures of the cooling pipe 301 and the supply pipe 302 are adjusted by a predetermined temperature adjustment value. For example, each temperature adjustment range may be ± 0.1 ℃, ± 0.2 ℃, ± 0.3 ℃, ± 0.4 ℃ or ± 0.5 ℃, and 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 the temperature value for each adjustment according to the liquid level height difference between the liquid level height and the liquid level height reference value, and adjusts the temperatures of the cooling pipe 301 and the supply pipe 302 according to the liquid level height data, including: determining a liquid level height difference value between the current liquid level height of the glass liquid in the feeding 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; the temperature adjusting curve at least comprises temperature adjusting values corresponding to different liquid level height difference values; and adjusting the temperature of the cooling pipe 301 and the temperature of the feeding pipe 302 according to the temperature adjusting value corresponding to the liquid level height difference. For example, if the deviation value of the liquid level height of the glass liquid in the supply pipe 302 from the reference value of the liquid level height is within ± 0.5mm, the temperature adjustment range may be ± 0.1 ℃, ± 0.2 ℃ or ± 0.3 ℃, and the larger the deviation value, the larger the adjustment 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 ℃, which enables the liquid level height to be adjusted quickly when the liquid level deviation value is large. If the deviation is outside of ± 0.5mm, for example within ± 1mm, the temperature adjustment range may be ± 0.3 ℃, ± 0.4 ℃, ± 0.5 ℃, and the larger the deviation is, the larger the adjustment corresponding range is. In the present embodiment, it is also possible to set that, when the liquid level height is within a certain range above or below the liquid level height reference value, if the influence of fluctuation in the glass liquid flow rate is considered negligible, temperature adjustment is not necessary at this time. For example, if the deviation value between the liquid level height of the glass liquid in the supply pipe 302 and the liquid 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 is small and adjustment is not necessary, and it may be set that when the liquid level height difference is smaller than 0.2mm, the temperature adjustment value corresponding to the liquid level height difference is 0, that is, temperature adjustment is not performed. It can be understood that the difference value between the liquid level height and the reference value of the liquid level height is specifically smaller than which threshold value, temperature adjustment is not needed, and the difference value can be customized according to the product control requirements of actual products.

Experiments prove that the control precision of the glass flow in the substrate glass manufacturing process can be effectively improved and the reject ratio of related products is reduced by controlling the glass flow 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 by the embodiment and the conventional process on the control precision of the glass liquid flow are shown in tables 1, 2 and 3:

TABLE 1

TABLE 2

TABLE 3

According to the experimental example, the method provided by the embodiment has the advantages that the flow control precision of the glass is effectively improved, the reject ratio of products is obviously reduced, and the production efficiency is obviously improved.

In order to further improve the control accuracy, the temperature of the cooling pipe 301 and the temperature of the feeding pipe 302 are adjusted according to the liquid level height data, and the method comprises the following steps: acquiring a first temperature of the cooling pipe 301 and a second temperature of the feeding pipe 302; and respectively adjusting the temperature of the cooling pipe 301 and the temperature of the feeding pipe 302 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. Further, adjusting the temperature of the cooling pipe 301 and the temperature of the feeding pipe 302 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 molten glass in the feeding pipe and the reference value of the liquid level height, respectively, includes: 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 301 and the temperature of 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 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; and if the current liquid level of the molten glass is higher than the liquid level reference value and the first temperature is lower than the second temperature, controlling the temperature of the cooling pipe 301 and the temperature of the feeding pipe 302 to rise.

Since the temperatures of the cooling pipe 301 and the feeding pipe 302 may be different, and thus the flow rates of the cooling pipe 301 and the feeding pipe 302 are different, in an embodiment of the present embodiment, in order to further improve the control accuracy, the temperature sensors disposed on the cooling pipe 301 and the feeding pipe 302 respectively collect the first temperature of the cooling pipe 301 and the second temperature of the feeding pipe 302, and respectively control the temperature of the cooling pipe 301 or the temperature of the feeding pipe 302 according to the temperature of the cooling pipe 301 and the temperature of the feeding pipe 302. Since the glass flow rate of the supply pipe 302 is affected by the glass flow rate of the cooling pipe 301, therefore, the flow rate of the molten glass may be controlled with reference to the temperature of the cooling pipe 301, for example, if the current liquid level of the molten glass is lower than the reference liquid level value, indicating that the flow rate of the molten glass is large, if the first temperature is higher than the second temperature, it indicates that the viscosity of the molten glass of the cooling pipe 301 is less than that of the molten glass of the feed pipe 302, that is, the glass flow rate of cooling pipe 301 is larger than the glass flow rate of feed pipe 302, and in the case where the outlet of feed pipe 302 is constant, the glass level height of the feed pipe 302 is still lower than the level height reference value, it means that the flow rates of the cooling pipe 301 and the feeding pipe 302 are both higher and at a higher value, and the temperature of the cooling pipe 301 and the feeding pipe 302 can be controlled to decrease at the same time, so as to simultaneously reduce the flow rates of the cooling pipe 301 and the feed pipe 302, so that the liquid level height of the feed pipe 302 is quickly close to the liquid level height reference value; on this basis, if the first temperature is lower than the second temperature, it is indicated that the viscosity of the glass liquid of the cooling pipe 301 is higher than the viscosity of the glass liquid of the feeding pipe 302, that is, the flow rate of the glass liquid of the cooling pipe 301 is smaller than the flow rate of the glass liquid of the feeding pipe 302, and the liquid level height of the feeding pipe 302 may be lower due to the higher temperature of the feeding pipe 302, so as to avoid that the liquid level height of the feeding pipe 302 exceeds the liquid level height reference value due to the excessively large adjustment range, at this time, only the temperature of the feeding pipe 302 is controlled to be lower. Similarly, if the current liquid level height of the molten glass is higher than the liquid level height reference value, it indicates that the flow rate of the molten glass is smaller, and if the first temperature is higher than the second temperature, it indicates that the higher flow rate of the molten glass may be caused by the lower temperature of the feed pipe 302, and in order to avoid that the liquid level height of the feed pipe 302 is lower than the liquid level height reference value due to the excessively large adjustment range, the temperature of the feed pipe 302 is controlled to be increased first; if the first temperature is lower than the second temperature, it indicates that the temperatures of the cooling pipe 301 and the supply pipe 302 are both low and at a lower value, and at this time, the temperatures of the cooling pipe 301 and the supply pipe 302 can be controlled to increase simultaneously, so as to increase the flow rates of the cooling pipe 301 and the supply pipe 302, so that the liquid level height of the supply pipe 302 quickly approaches the liquid level height reference value.

As shown in fig. 3, in a second aspect of the present invention, there is provided a molten glass platinum channel flow rate control device, to which the above molten glass platinum channel flow rate control method is applied, the device including: the data acquisition module is configured to acquire liquid level height data of the glass liquid in the feeding pipe; and the control module is configured to adjust the temperatures 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.

In a third aspect of the invention, there is provided a molten glass platinum channel flow control system, the system comprising: the liquid level height sensor is used for acquiring liquid level height data of the glass liquid in the feeding 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 executed, implements the above-described method for controlling a molten glass platinum channel flow rate.

In conclusion, the defects of the prior art cause great troubles to the production of traditional glass products and limit the quality of the products, and particularly, in the production process of UTG substrate glass, because the flow rate of molten glass 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 precision and stability of the flow rate have critical influence on the substrate glass, the defects of the prior art are more obvious, and the influence on the production efficiency is more serious. The invention adopts a technical scheme completely different from the prior art, changes the adjustment basis of the glass flow, effectively improves the timeliness of the adjustment of the glass flow by taking the difference value of the glass liquid level height of the feeding pipe and the liquid level height reference value as the adjustment basis and the weight of the lag feedback as the reference, solves the problems of no weight feedback caused by molding and weighing faults and longer time of the production recovery process, obviously improves the control accuracy of the flow, and integrally improves the production efficiency.

While the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications are within the scope of the embodiments of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention will not be described separately for the various possible combinations.

In addition, any combination of the various embodiments of the present invention is also possible, and the same shall be considered as disclosed in the embodiments of the present invention as long as it does not depart from the spirit of the embodiments of the present invention.