Ltps substrate glass kiln tin electrode pushing method and system

Abstract

The present application relates to the technical field of glass production, in particular to a LTPS substrate glass kiln tin electrode advancing method and system, the predicted advancing amount of each electrode is calculated by the proportion of the loss of each electrode compared with all electrodes; meanwhile, the actual advancing amount of the electrode is determined according to the electrode working temperature and the loss proportion, on the one hand, the electrode over-advancing in the rear area of the kiln can be avoided to avoid under-advancing, so as to avoid the excessive joule heat generated by the electrode shrinkage and the erosion caused by the high-temperature glass liquid to the inner wall of the kiln pool, ensure the service life of the electrode and the kiln pool wall, and meet the actual production requirements; on the other hand, the electrode over-advancing in the front area of the kiln can be avoided, so as to reduce the electrode consumption, reduce the cost, reduce the contact area between the electrode and the material mountain, ensure the stable and reliable production, improve the service life of the electrode, and reduce the cost; finally, the length of each electrode is determined according to the actual advancing amount, so that each electrode can be replaced synchronously, and the influence frequency of electrode replacement on glass production is reduced.

Description

Technical Field

[0001] This invention relates to the field of glass production technology, specifically to a method and system for advancing tin electrodes in an LTPS substrate glass furnace. Background Technology

[0002] Glass products have always been widely used in the display field. From the traditional color picture tube industry to the current flat panel display industry, glass has always played a key role in display devices as a key component. With the increasing requirements for display quality, the technology has gradually shifted from traditional TFT-LCD substrate glass to high-resolution LTPS substrate glass obtained through high-temperature processes.

[0003] With the significant increase in the melting temperature of the kiln, the erosion rate of the electrodes at hot spots and the kiln pool wall has increased, and the erosion rate of the electrodes is often greater than that of the kiln pool wall. This causes the electrode tip to retract into the kiln pool wall after excessive erosion. At the same time, due to the increase in the electrode operating temperature, the Joule heat generated by the current accumulation increases, causing erosion inside the kiln pool wall, further increasing the erosion rate of the kiln pool wall and reducing its service life.

[0004] Although Chinese invention patent application number 202311803522.0 proposes an automatic electrode compensation system and method for TFT glass furnaces, which periodically advances the electrodes through an electrode advancing mechanism based on the calculated electrode advance amount; although pushing the electrodes can prevent the electrodes from shrinking inward and eroding the furnace wall, the existing electrode advancing method cannot effectively ensure that the electrode advance amount in the rear zone of the furnace meets the consumption amount, and will also lead to excessive electrode advance amount in the front zone of the furnace, increasing costs and causing the electrodes to come into contact with the material pile, affecting production. Summary of the Invention

[0005] The purpose of this invention is to provide a method and system for advancing tin electrodes in an LTPS substrate glass furnace, thereby solving the technical problem that current electrode advancement methods in LTPS substrate glass furnaces reduce the service life of the furnace walls.

[0006] The solution of the present invention to the above-mentioned technical problems is as follows:

[0007] A method for advancing tin electrodes in an LTPS substrate glass furnace includes the following steps:

[0008] S1. Obtain the loss of all electrodes during the operating cycle and determine the loss percentage of each electrode.

[0009] S2. Determine the loss of all electrodes by measuring the tin content in the glass product within a set time period.

[0010] S3. Determine the predicted propulsion amount of each electrode within a set time period based on the loss amount of all electrodes and the loss ratio of each electrode.

[0011] S4. Set the over-propellant conditions and determine whether each electrode has reached the over-propellant conditions. If yes, proceed to step S5; otherwise, proceed to step S6.

[0012] S5. Set the actual propulsion amount of the corresponding electrode, and determine the initial length of the corresponding electrode based on the actual propulsion amount, wherein the actual propulsion amount is greater than the predicted propulsion amount of the corresponding electrode;

[0013] S6. Set the actual propulsion amount of the corresponding electrode, and determine the initial length of the corresponding electrode based on the actual propulsion amount, wherein the actual propulsion amount is less than the predicted propulsion amount of the corresponding electrode.

[0014] Further specifying, step S1 includes:

[0015] S1.1 Obtain the loss of each electrode during the operating cycle. ;

[0016] S1.2 Determine the loss percentage of each electrode. :

[0017]

[0018] in, For the first The percentage of loss per electrode For the first The amount of wear and tear on each electrode during the operating cycle. This represents the number of electrodes.

[0019] Further specifying, step S2 specifically includes:

[0020] S2.1 Measure the tin oxide content in the glass product within a set time period using electron-coupled plasma spectroscopy. ;

[0021] S2.2 Obtain the tin oxide content in the raw materials of the corresponding glass products. ;

[0022] S2.3 Determine the volatilization rate of tin oxide in the raw materials of the glass product within a set time period. and the volatility of all electrodes ;

[0023] S2.4 Calculate the loss of all electrodes within the set time period. :

[0024]

[0025] in, and The values ​​range from 4% to 6%.

[0026] Further specifying, the over-propulsion condition is: whether the electrode operating temperature reaches the critical temperature value of the pool wall, and whether the electrode loss ratio reaches the critical value of electrode loss.

[0027] Specifically, step S4 is as follows: if both the electrode operating temperature and the loss ratio reach the over-propulsion condition, then step S5 is executed; otherwise, step S6 is executed.

[0028] Further specifying, step S5 includes:

[0029] S5.1 Determine the actual propulsion amount of the electrode to achieve the over-propulsion condition based on the predicted propulsion amount of the electrode:

[0030]

[0031]

[0032] in, To achieve the propulsion coefficient of the electrode under the condition of excessive propulsion, The value range is 1.01 to 1.05. To achieve the predicted propulsion amount of the electrode under the condition of excessive propulsion, Electrodes required to achieve excessive propulsion conditions;

[0033] S5.2 Determine the initial length of the electrode to achieve the over-propulsion condition based on the actual propulsion amount. :

[0034]

[0035] in, This refers to the electrode replacement cycle.

[0036] Further specifying, step S6 includes:

[0037] S6.1 Determine the actual propulsion amount of the electrode that did not meet the over-propulsion condition based on the predicted propulsion amount of the electrode:

[0038]

[0039]

[0040] in, The propulsion coefficient of the electrode that did not meet the over-propulsion condition. The value range is 0.91 to 1. The predicted propulsion amount for the electrode that did not meet the over-propulsion condition;

[0041] S6.2 Determine the initial length of the electrode that has not reached the over-propulsion condition based on the actual propulsion amount. :

[0042]

[0043] in, This refers to the electrode replacement cycle.

[0044] A tin electrode propulsion system for an LTPS substrate glass furnace includes:

[0045] The electrode loss percentage calculation module is used to obtain the loss of all electrodes during the operating cycle and determine the loss percentage of each electrode.

[0046] The electrode loss calculation module is used to determine the loss of all electrodes by measuring the tin content in the glass product within a set time period.

[0047] The electrode prediction propulsion calculation module is used to determine the predicted propulsion of each electrode within a set time based on the loss of all electrodes and the loss ratio of each electrode.

[0048] The electrode propulsion judgment module is used to determine whether each electrode has reached the over-propulsion condition. If so, the rear propulsion module is executed; otherwise, the front propulsion module is executed.

[0049] The rear-area propulsion module is used to set the actual propulsion amount of the corresponding electrode and determine the initial length of the corresponding electrode based on the actual propulsion amount, wherein the actual propulsion amount is greater than the predicted propulsion amount of the corresponding electrode.

[0050] The front-area propulsion module is used to set the actual propulsion amount of the corresponding electrode and determine the initial length of the corresponding electrode based on the actual propulsion amount, wherein the actual propulsion amount is less than the predicted propulsion amount of the corresponding electrode.

[0051] Further specifying, the electrode loss ratio calculation module includes:

[0052] The electrode loss acquisition unit is used to acquire the loss of each electrode during the operating cycle. ;

[0053] The electrode loss ratio calculation unit is used to calculate the percentage of electrode loss based on the first... Percentage of losses per electrode and the The loss of each electrode during the operating cycle is calculated, and the loss percentage of each electrode is determined. , This represents the number of electrodes.

[0054] Further specifying, the electrode loss calculation module includes:

[0055] The tin oxide content acquisition unit in glass products is used to measure the tin oxide content in glass products within a set time period using electron-coupled plasma spectroscopy. ;

[0056] The tin oxide content acquisition unit for glass product raw materials is used to collect the tin oxide content in the corresponding glass product raw materials. ;

[0057] The total electrode loss calculation unit is used to calculate the total electrode loss based on... Calculate the loss of all electrodes within a set time period. , The evaporation rate of tin oxide in the raw materials for glass products. For the volatilization rate of all electrodes, and The values ​​range from 4% to 6%.

[0058] Further specifying, the over-propulsion condition is: whether the electrode operating temperature reaches the critical temperature value of the pool wall, and whether the electrode loss ratio reaches the critical value of electrode loss.

[0059] The rear propulsion module includes:

[0060] The rear zone actual propulsion calculation unit is used to calculate based on and Calculate the actual propulsion amount of the electrode that meets the over-propulsion condition;

[0061] in, To achieve the propulsion coefficient of the electrode under the condition of excessive propulsion, The value range is 1.01 to 1.05. To achieve the predicted propulsion amount of the electrode under the condition of excessive propulsion;

[0062] The initial length calculation unit for the rear electrode is used to calculate the initial length of the rear electrode based on... Calculate the initial length of the electrode to achieve the over-propulsion condition. , This refers to the electrode replacement cycle;

[0063] The front-area propulsion module includes:

[0064] The front zone actual propulsion calculation unit is used to calculate based on and Calculate the actual propulsion amount of the electrode that did not meet the over-propulsion condition;

[0065] in, The propulsion coefficient of the electrode that did not meet the over-propulsion condition. The value ranges from 0.91 to 1. The predicted propulsion amount for the electrode that did not meet the over-propulsion condition;

[0066] The front electrode initial length calculation unit is used to calculate the initial length of the front electrode based on... Calculate the initial length of the electrode when the over-propulsion condition is not met. , This refers to the electrode replacement cycle.

[0067] The beneficial effects of this invention are as follows:

[0068] This invention calculates the predicted advance amount of each electrode by comparing its wear ratio with that of all electrodes. Simultaneously, based on the electrode's operating temperature and wear ratio, it determines the actual advance amount. This ensures that electrodes in the rear zone of the furnace are over-pushed, avoiding under-push, thus preventing excessive Joule heating caused by electrode retraction and erosion of the furnace wall by high-temperature molten glass, guaranteeing the service life of both electrodes and the furnace wall, and meeting actual production needs. Furthermore, it avoids over-push of electrodes in the front zone of the furnace, reducing electrode consumption, lowering costs, reducing the contact area between the electrode and the slag heap, ensuring stable and reliable production, increasing electrode lifespan, and reducing costs. Finally, the length of each electrode is determined based on the actual advance amount, allowing for synchronous replacement of each electrode and reducing the frequency of electrode replacements affecting glass production. Attached Figure Description

[0069] Figure 1 This is a flowchart illustrating the steps of the LTPS substrate glass furnace tin electrode propulsion method of the present invention.

[0070] Figure 2 This is a schematic diagram of the tin electrode propulsion system for the LTPS substrate glass furnace of the present invention. Detailed Implementation

[0071] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0072] Example 1

[0073] refer to Figure 1 This invention provides a method for advancing tin electrodes in an LTPS substrate glass furnace, including...

[0074] S1. Obtain the loss of all electrodes during the operating cycle and determine the loss percentage of each electrode.

[0075] S2. Determine the loss of all electrodes by measuring the tin content in the glass product within a set time period.

[0076] S3. Determine the predicted propulsion amount of each electrode within a set time period based on the loss amount of all electrodes and the loss ratio of each electrode.

[0077] S4. Set the over-propellant conditions and determine whether each electrode has reached the over-propellant conditions. If yes, proceed to step S5; otherwise, proceed to step S6.

[0078] S5. Set the actual propulsion amount of the corresponding electrode, and determine the initial length of the corresponding electrode based on the actual propulsion amount. The actual propulsion amount is greater than the predicted propulsion amount of the corresponding electrode.

[0079] S6. Set the actual propulsion amount of the corresponding electrode, and determine the initial length of the corresponding electrode based on the actual propulsion amount. The actual propulsion amount is less than the predicted propulsion amount of the corresponding electrode.

[0080] To further explain, step S1 includes:

[0081] S1.1 Obtain the loss of each electrode during the operating cycle. ;

[0082] Specifically, because the electrodes are located in different positions in the furnace, the corresponding operating temperatures are different, and the flow rates of the molten glass are different, the amount of loss of each electrode in the furnace is different. After the operation cycle is completed, the furnace is disassembled, and the amount of loss of each electrode during the operation cycle is obtained by weighing the remaining electrodes or measuring the length of the remaining electrodes.

[0083] S1.2 Determine the loss percentage of each electrode. :

[0084]

[0085] in, For the first The percentage of loss per electrode For the first The amount of wear and tear on each electrode during the operating cycle. The number of electrodes;

[0086] Specifically, the total loss of all electrodes during the operating cycle is obtained, and then the loss percentage of each electrode is determined.

[0087] For example, depending on the process, the number of electrodes in the glass furnace of LTPS substrates varies. When the coefficient is 6, the operating temperature and loss ratio of each electrode are shown in Table 1:

[0088] Table 1 Operating data of 6 electrodes in LTPS substrate glass furnace

[0089]

[0090] when When the value is 8, the operating temperature and loss ratio of each electrode are shown in Table 2:

[0091] Table 2 Operating data of 8 electrodes in LTPS substrate glass furnace

[0092]

[0093] As shown in Tables 1 and 2, the percentage of electrode loss is not directly related to its operating temperature.

[0094] To further explain, step S2 specifically involves:

[0095] S2.1 Measure the tin oxide content in the glass product within a set time period using electron-coupled plasma spectroscopy. .

[0096] S2.2 Obtain the tin oxide content in the raw materials of the corresponding glass products. .

[0097] S2.3 Determine the volatilization rate of tin oxide in the raw materials of the glass product within a set time period. and the volatility of all electrodes .

[0098] S2.4 Calculate the loss of all electrodes within the set time period. :

[0099]

[0100] in, and The values ​​range from 4% to 6%.

[0101] Specifically, by obtaining the tin oxide content in glass products Tin oxide content in raw materials for glass products The amount of tin oxide lost through evaporation is then used to calculate the amount of tin oxide lost by all electrodes within a set time.

[0102] Volatilization rate and volatility The value is determined based on empirical values ​​given by the actual production process.

[0103] To further explain, step S3 specifically involves:

[0104] pass This allows us to obtain the predicted propulsion amount of each electrode within a set time period: , For the first Predicted propulsion amount for each electrode.

[0105] To further explain, step S4 specifically involves:

[0106] Since the front zone of the LTPS substrate glass furnace mainly contains the molten glass and the glass melt flow rate is relatively slow, although the temperature gradient of the electrodes in the front zone is large, the temperature in the front zone is lower than the temperature of the hot spots in the rear zone. Therefore, the erosion of the electrodes in the front zone is slow, and the electrodes are not easy to retract into the furnace wall. Even if the electrodes in the front zone are eroded and retracted into the furnace wall, the Joule heat generated is low, and the temperature of the glass melt outside the electrodes in the front zone is lower than that of the glass melt in the rear zone. As a result, the erosion of the furnace wall by the retraction of the electrodes in the front zone is not obvious. Therefore, the erosion effect of the front zone electrodes on the furnace wall when the electrode advance amount is slightly less than the consumption amount can be ignored.

[0107] Conversely, the rear zone of the LTPS substrate glass furnace is mainly composed of fully molten glass, which has a high temperature and increased flow rate. Therefore, the erosion and loss of the electrodes in the rear zone are more pronounced. When the feed rate is less than the loss rate, electrode shrinkage is very likely to occur. At this time, under the influence of the scouring effect of the molten glass, the high temperature environment, and the higher Joule heat generated by the current accumulation inside the furnace wall, the erosion of the LTPS substrate glass furnace becomes more severe and prominent, significantly reducing the service life of the furnace wall and affecting production efficiency and quality.

[0108] Therefore, by checking whether the electrode operating temperature reaches the critical temperature value of the pool wall and whether the electrode loss ratio reaches the set electrode loss critical value, it can be determined whether the electrode is over-pushed or under-pushed during actual advancement.

[0109] For example, when When the value is 6, based on empirical values, the critical temperature of the pool wall is taken as 1600℃ and the critical value of electrode loss is taken as 15%; therefore, electrodes 1 and 2 do not meet the over-propellant condition, while electrodes 3 to 6 meet the over-propellant condition.

[0110] when When the value is 8, based on empirical values, the critical temperature of the pool wall is taken as 1640℃ and the critical value of electrode loss is taken as 11%; therefore, electrodes 1 to 3 do not meet the over-propellant condition, while electrodes 4 to 8 meet the over-propellant condition.

[0111] At the same time, when When =6, electrodes 1 and 2 are both in the slag heap region, while electrodes 3 to 6 are all in the molten glass region; similarly, when When =8, electrodes 1 to 3 are all in the material pile area, while electrodes 4 to 8 are all in the molten glass area. The material pile area in the LTPS substrate glass furnace is the front area, and the molten glass area is the back area. Therefore, it is also possible to simply judge according to the area where the electrode is located. If the electrode is located in the front area, then step S6 is executed; if the electrode is located in the back area, then step S5 is executed.

[0112] To further explain, step S5 includes:

[0113] S5.1 Determine the actual propulsion amount of the electrode to achieve the over-propulsion condition based on the predicted propulsion amount of the electrode:

[0114]

[0115]

[0116] in, To achieve the propulsion coefficient of the electrode under the condition of excessive propulsion, The value range is 1.05 to 1.2. To achieve the predicted propulsion amount of the electrode under the condition of excessive propulsion;

[0117] Specifically, because there are hot spot electrodes (electrodes with the highest operating temperature) in the rear area of ​​the LTPS substrate glass furnace, the temperature of the surrounding molten glass is relatively high. At the same time, the flow rate of molten glass in the rear area of ​​the LTPS substrate glass furnace increases. Although the operating temperature of the electrodes near the flow hole decreases, the high temperature and fast flow rate of the molten glass at their location will increase erosion. Therefore, the advancement coefficient of each electrode in the rear area of ​​the LTPS substrate glass furnace is different, and the advancement coefficient of each electrode is greater than 1. The specific advancement coefficient is determined based on empirical values, so as to obtain the actual advancement amount of the corresponding electrode within a set time, and avoid the electrode shrinking inward due to under-propulsion, which will affect the service life of the furnace tank wall.

[0118] In actual production, electrode propulsion equipment can be used to uniformly propel the electrode according to the actual propulsion amount of the corresponding electrode within a set time, or it can be selected to propel the corresponding actual propulsion amount within a specified time; for example, if the set time is 1 month, it can be propulsed uniformly within 1 month according to the actual propulsion amount. The corresponding electrode can be advanced evenly, or the advancement of the corresponding length of electrode can be completed within 5 days.

[0119] S5.2 Determine the initial length of the electrode to achieve the over-propulsion condition based on the actual propulsion amount. :

[0120]

[0121] in, This refers to the electrode replacement cycle;

[0122] Specifically, because the actual advance amount of the rear electrode in the LTPS substrate glass furnace is greater than that of the front electrode, the current practice of using electrodes of the same length will lead to an increased replacement frequency of the rear electrode in the LTPS substrate glass furnace. Furthermore, the asynchronous replacement frequencies of the front and rear electrodes in the LTPS substrate glass furnace can easily cause frequent shutdowns of the LTPS substrate glass furnace, affecting glass production efficiency and quality, and failing to meet actual production needs. Therefore, based on the electrode replacement cycle, for example, 5 years, the length of each electrode in the rear zone of the LTPS substrate glass furnace is calculated as 5 × 12 months = 70 months.

[0123] To further explain, step S6 includes:

[0124] S6.1 Determine the actual propulsion amount of the electrode that did not meet the over-propulsion condition based on the predicted propulsion amount of the electrode:

[0125]

[0126]

[0127] in, The propulsion coefficient of the electrode that did not meet the over-propulsion condition. The predicted propulsion amount for the electrode that did not meet the over-propulsion condition. The value range is 0.85 to 1;

[0128] Specifically, although the temperature gradient in the front zone of the LTPS substrate glass furnace is relatively large, it is all below the critical value of the furnace wall. Therefore, the temperature change has a small but significant impact on electrode erosion and loss. Meanwhile, the flow rate of molten glass around the electrode gradually increases as it gets closer to the rear zone of the LTPS substrate glass furnace. As a result, the electrode erosion and loss rate is different at different locations in the front zone of the LTPS substrate glass furnace, and their propagation coefficients are different. The propagation coefficient of the corresponding electrode can be determined based on empirical values.

[0129] Compared to existing electrode advancement schemes, this invention unifies the advancement amount of each electrode. On the one hand, it can reduce the advancement amount of the electrodes in the front zone of the LTPS substrate glass furnace, avoiding excessive advancement and increased contact area with the material pile, which would affect the electrode life. At the same time, it can reduce electrode consumption and reduce costs. On the other hand, it can ensure that the electrodes in the rear zone of the LTPS substrate glass furnace are over-propelled, avoiding electrode shrinkage and erosion damage to the furnace wall, meeting actual production needs, and ensuring stable and reliable LTPS substrate glass production.

[0130] For example, when When the value is 6, the propulsion amount of each electrode is shown in Table 3:

[0131] Table 3. Advancement of 6 electrodes in LTPS substrate glass furnace

[0132]

[0133] when When the value is 8, the propulsion amount of each electrode is shown in Table 4:

[0134] Table 4. Advancement of 8 electrodes in LTPS substrate glass furnace

[0135]

[0136] S6.2 Determine the initial length of the electrode for which the over-propulsion condition has not been met based on the actual propulsion amount. :

[0137]

[0138] in, This refers to the electrode replacement cycle.

[0139] Specifically, by setting a uniform replacement cycle for the tin electrodes in the LTPS substrate glass furnace and determining the actual length of each electrode, it is possible to ensure that the advancement of the electrodes does not affect production efficiency and quality, while also improving the service life of the furnace wall and meeting actual production needs.

[0140] Example 2

[0141] refer to Figure 2 This embodiment provides a tin electrode propulsion system for an LTPS substrate glass furnace, comprising:

[0142] The electrode loss percentage calculation module is used to obtain the loss of all electrodes during the operating cycle and determine the loss percentage of each electrode.

[0143] The electrode loss calculation module is used to determine the loss of all electrodes by measuring the tin content in the glass product within a set time period.

[0144] The electrode prediction propulsion calculation module is used to determine the predicted propulsion of each electrode within a set time based on the loss of all electrodes and the loss ratio of each electrode.

[0145] The electrode propulsion judgment module is used to determine whether each electrode has reached the over-propulsion condition. If so, the rear propulsion module is executed; otherwise, the front propulsion module is executed. The over-propulsion condition is: whether the electrode operating temperature reaches the critical temperature value of the pool wall, and whether the electrode loss ratio reaches the critical value of electrode loss.

[0146] The rear-area propulsion module is used to set the actual propulsion amount of the corresponding electrode and determine the initial length of the corresponding electrode based on the actual propulsion amount, wherein the actual propulsion amount is greater than the predicted propulsion amount of the corresponding electrode.

[0147] The front-area propulsion module is used to set the actual propulsion amount of the corresponding electrode and determine the initial length of the corresponding electrode based on the actual propulsion amount, wherein the actual propulsion amount is less than the predicted propulsion amount of the corresponding electrode.

[0148] Further specifying, the electrode loss ratio calculation module includes:

[0149] The electrode loss acquisition unit is used to acquire the loss of each electrode during the operating cycle. ;

[0150] The electrode loss ratio calculation unit is used to calculate the percentage of electrode loss based on the first... Percentage of losses per electrode and the The loss of each electrode during the operating cycle is calculated, and the loss percentage of each electrode is determined. , This represents the number of electrodes.

[0151] Further specifying, the electrode loss calculation module includes:

[0152] The tin oxide content acquisition unit in glass products is used to measure the tin oxide content in glass products within a set time period using electron-coupled plasma spectroscopy. ;

[0153] The tin oxide content acquisition unit for glass product raw materials is used to collect the tin oxide content in the corresponding glass product raw materials. ;

[0154] The total electrode loss calculation unit is used to calculate the total electrode loss based on... Calculate the loss of all electrodes within a set time period. , The evaporation rate of tin oxide in the raw materials for glass products. For the volatilization rate of all electrodes, and The values ​​range from 4% to 6%.

[0155] Further specifying, the rear-area propulsion module includes:

[0156] The rear zone actual propulsion calculation unit is used to calculate based on and Calculate the actual propulsion amount of the electrode that meets the over-propulsion condition;

[0157] in, To achieve the propulsion coefficient of the electrode under the condition of excessive propulsion, The value range is 1.01 to 1.05. To achieve the predicted propulsion amount of the electrode under the condition of excessive propulsion;

[0158] The initial length calculation unit for the rear electrode is used to calculate the initial length of the rear electrode based on... Calculate the initial length of the electrode to achieve the over-propulsion condition. , This refers to the electrode replacement cycle.

[0159] Further specifying, the front zone advance module includes:

[0160] The front zone actual propulsion calculation unit is used to calculate based on and Calculate the actual propulsion amount of the electrode that did not meet the over-propulsion condition;

[0161] in, The propulsion coefficient of the electrode that did not meet the over-propulsion condition. The value ranges from 0.91 to 1. The predicted propulsion amount for the electrode that did not meet the over-propulsion condition;

[0162] The front electrode initial length calculation unit is used to calculate the initial length of the front electrode based on... Calculate the initial length of the electrode when the over-propulsion condition is not met. , This refers to the electrode replacement cycle.

[0163] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

Claims

1. A method for advancing tin electrodes in an LTPS substrate glass furnace, characterized in that, The method comprises the following steps: S1, acquiring the loss amount of all electrodes in a running period to determine the loss proportion of each electrode; S2, determining the loss amount of all electrodes by measuring the tin content in the glass product within a set time; S3, determining the predicted advancing amount of each electrode within a set time according to the loss amount of all electrodes and the loss proportion of each electrode; S4, setting an excessive advancing condition to determine whether each electrode meets the excessive advancing condition, if yes, executing step S5; if no, executing step S6; S5, setting the actual advancing amount of the corresponding electrode, and determining the initial length of the corresponding electrode according to the actual advancing amount, wherein the actual advancing amount is greater than the predicted advancing amount of the corresponding electrode; S6, setting the actual advancing amount of the corresponding electrode, and determining the initial length of the corresponding electrode according to the actual advancing amount, wherein the actual advancing amount is less than the predicted advancing amount of the corresponding electrode; The step S1 comprises: S1.1, obtaining the amount of loss of each electrode in a running cycle ; S1.2, determining the loss proportion of each electrode : wherein, is the loss ratio of the first electrode, is the loss amount of the first electrode in the operation cycle, is the number of electrodes; The excessive advancing condition is that whether the electrode operating temperature reaches the critical temperature value of the pool wall and whether the electrode loss proportion reaches the critical value of electrode loss; The step S4 specifically comprises: if the electrode operating temperature and the loss proportion both meet the excessive advancing condition, executing step S5; if not, executing step S6; The step S5 comprises: S5.1, determining the actual advancing amount of the electrode meeting the excessive advancing condition according to the predicted advancing amount of the electrode: wherein, a propulsion coefficient of the electrode to achieve the over-propulsion condition, a value range of 1.01~1.05, a predicted propulsion amount of the electrode to achieve the over-propulsion condition, an electrode to achieve the over-propulsion condition; S5.

2. determining an initial length of the over-boost condition electrode based on the actual boost amount : wherein, is the replacement period of the electrode; The step S6 comprises: S6.1, determining the actual advancing amount of the electrode not meeting the excessive advancing condition according to the predicted advancing amount of the electrode: wherein, is the coefficient of propulsion of the electrode not reaching the over-propulsion condition, is in the range of 0.91 to 1, is the predicted amount of propulsion of the electrode not reaching the over-propulsion condition; S6.

2. determining an initial length of the over-boost condition electrode based on the actual boost amount : wherein, is the replacement period of the electrode. 2.The LTPS substrate glass kiln tin electrode pushing method according to claim 1, wherein, The step S2 specifically comprises: S2.

1. Measuring the content of tin oxide in the glass product over time by electron coupling plasmon spectroscopy ; S2.2, obtaining the content of tin oxide in the raw material of the glass product ; S2.3, determining the volatilization rate of tin oxide in the glass product raw material within a set time and the volatilization rate of all electrodes ; S2.4, calculating the amount of loss of all electrodes within the set time : wherein, with each of the ranges of values of R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 3. A LTPS substrate glass kiln tin electrode propulsion system, characterized by, Comprises: The electrode loss proportion calculation module is configured to acquire the loss amount of all electrodes in a running period to determine the loss proportion of each electrode; The electrode loss amount calculation module is configured to determine the loss amount of all electrodes by measuring the tin content in the glass product within a set time; The electrode predicted advancing amount calculation module is configured to determine the predicted advancing amount of each electrode within a set time according to the loss amount of all electrodes and the loss proportion of each electrode; The electrode advancing judgment module is configured to determine whether each electrode meets the excessive advancing condition, if yes, executing the rear zone advancing module; if not, executing the front zone advancing module; The rear zone advancing module is configured to set the actual advancing amount of the corresponding electrode, and determine the initial length of the corresponding electrode according to the actual advancing amount, wherein the actual advancing amount is greater than the predicted advancing amount of the corresponding electrode; The front zone advancing module is configured to set the actual advancing amount of the corresponding electrode, and determine the initial length of the corresponding electrode according to the actual advancing amount, wherein the actual advancing amount is less than the predicted advancing amount of the corresponding electrode; The electrode loss proportion calculation module comprises: an electrode loss amount acquisition unit configured to acquire a loss amount of each electrode in a running period ; The electrode loss ratio calculation unit is used to calculate the percentage of electrode loss based on the first... Percentage of losses per electrode and the The loss of each electrode during the operating cycle is calculated, and the loss percentage of each electrode is determined. , The number of electrodes; The excessive advancing condition is that whether the electrode operating temperature reaches the critical temperature value of the pool wall and whether the electrode loss proportion reaches the critical value of electrode loss; The rear zone advancing module comprises: The rear zone actual propulsion amount calculating unit is configured to calculate the actual propulsion amount of the electrode reaching the over-propulsion condition, based on and the actual propulsion amount of the electrode reaching the over-propulsion condition wherein, to achieve the over-propulsion condition of the electrode, the value range is 1.01~1.05, to achieve the over-propulsion condition of the electrode; a rear zone electrode initial length calculation unit for calculating an initial length of the electrode in the rear zone based on the calculated initial length of the electrode in the front zone , the replacement period of the electrode; The front zone advancing module comprises: The front zone actual advance amount calculating unit is configured to calculate the actual advance amount of the electrode that has not reached the over-advance condition, based on and the actual advance amount of the electrode that has reached the over-advance condition. wherein, is the coefficient of propulsion for the electrode that has not reached the over-propulsion condition, is in the range of 0.91 to 1, is the predicted amount of propulsion for the electrode that has not reached the over-propulsion condition; a front zone electrode initial length calculation unit for calculating an initial length of the electrode in the front zone based on calculating an initial length of the electrode not reaching the over-propulsion condition , is the replacement period of the electrode.

4. The LTPS glass furnace tin electrode propulsion system of claim 3, wherein, The electrode loss amount calculation module comprises: A unit for collecting the content of tin oxide in a glass product for measuring the content of tin oxide in a glass product within a set time by electron-coupled plasma spectroscopy ; The glass product raw material tin oxide content collection unit is used for collecting the content of tin oxide in the corresponding glass product raw material ; electrode total loss amount calculation unit for calculating the loss amount of all electrodes within the set time according to the loss amount of all electrodes within the set time , the volatilization rate of tin oxide in the raw material of the glass product, the volatilization rate of all electrodes, and the value range of both is 4%~6%.

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