Glass tin bath bottom cooling air system and control method

Abstract

The invention discloses a glass tin bath bottom cooling air system and a control method, a bath bottom plate is provided with a plurality of temperature control areas, and the cooling air system comprises a control system, a cooling fan and a plurality of temperature detection systems arranged in the temperature control areas in a one-to-one correspondence mode; the temperature detection system is used for transmitting the actual temperature value of the corresponding temperature control area to the control system; the air conveying end of the cooling fan communicates with a main air pipe, the main air pipe communicates with a plurality of first branch air pipes arranged in one-to-one correspondence with the temperature control areas, and the first branch air pipes are used for blowing cooling air to the corresponding temperature control areas; a first airflow regulating valve is arranged on each first branch air pipe; the control system is used for comparing the actual temperature value of each temperature control area with a set temperature value to obtain a first comparison result, and controlling the opening degree of the corresponding first airflow regulating valve according to the first comparison result; according to the invention, the temperatures of different positions of the tank bottom plate can be dynamically and accurately controlled to be basically kept at the same set temperature value according to the actual temperature value.

Description

Technical Field

[0001] This invention relates to the field of glass production technology, specifically to a cooling air system and control method for the bottom of a glass tin bath. Background Technology

[0002] The tin bath is one of the key pieces of equipment in float glass production. It contains molten tin, and molten glass flows into it from the furnace. The glass floats on the surface of the molten tin, spreads evenly, and is then drawn by drive rollers at a set speed to form glass of uniform thickness. The bottom of the tin bath is generally designed with a steel structure. Because the high temperature of the molten tin can corrode the steel structure at the bottom of the tin bath, causing tin leakage, existing tin baths typically have a cooling system at the bottom to control the temperature below 120°C and prevent corrosion.

[0003] Existing cooling systems typically use a fan to deliver cooling air to a main pipe, and then the cooling air is blown through multiple branch pipes to various locations on the bottom plate of the solder bath for cooling. The temperature varies at different locations on the bottom plate of the solder bath. Using branch pipes with the same airflow to blow air to different locations on the bottom plate of the solder bath makes it difficult to control the temperature at different locations on the bottom plate of the solder bath to remain basically consistent. Summary of the Invention

[0004] In view of this, the present invention provides a cooling air system and control method for the bottom of a glass tin bath, so as to solve the problem that existing cooling systems for the bottom of tin baths are not easy to control the temperature of different positions of the bottom plate of the tin bath to remain basically consistent.

[0005] In a first aspect, the present invention provides a cooling air system for the bottom of a glass tin bath, used to control the temperature of the bottom plate of the glass tin bath. The bottom plate is divided into multiple temperature control zones along its length. The cooling air system includes: Control system; Multiple temperature detection systems are set up one-to-one in multiple temperature control zones. The temperature detection systems are used to obtain the actual temperature value of the corresponding temperature control zone and transmit the actual temperature value to the control system. Cooling fan, used to output cooling air; The main air duct is connected to the air delivery end of the cooling fan; Multiple first branch air ducts are set up one-to-one with multiple temperature control zones. One end of the first branch air duct is connected to the main air duct, and the other end is used to blow cooling air to the corresponding temperature control zone. The first airflow regulating valve is installed in the first branch duct, and the first airflow regulating valve is electrically connected to the control system. The control system is used for: The actual temperature value of each temperature control zone is compared with the corresponding set temperature value to obtain a first comparison result, and the opening degree of the corresponding first airflow regulating valve is controlled according to the first comparison result.

[0006] The glass tin bath bottom cooling air system according to the present invention has at least the following beneficial effects: By installing temperature detection systems corresponding to multiple temperature control zones on the tank bottom plate, and a first branch duct corresponding to each temperature control zone on the main air duct, and a first airflow regulating valve on each first branch duct, the system first detects the temperature of the corresponding temperature control zone to obtain the actual temperature value of the control zone. Then, the control system compares the actual temperature value of the control zone with the corresponding set temperature value to obtain a first comparison result (i.e., the temperature difference). Based on the first comparison result, the system controls the opening of the first airflow regulating valve of the corresponding first branch duct. This allows for flexible control of the opening of the first airflow regulating valve of the corresponding first branch duct according to the actual temperature value of different temperature control zones. This enables dynamic and precise control of the temperature at different locations on the tank bottom plate to maintain a relatively consistent set temperature value (i.e., the temperature remains basically the same) based on the actual temperature value, while only using the same cooling fan as the air source, effectively preventing the tank bottom plate from being corroded by high temperature.

[0007] In one optional embodiment, the system further includes a frequency converter electrically connected to the control system and the cooling fan, the frequency converter being used to control the operating parameters of the cooling fan; the control system is further used to: The output frequency of the inverter is adjusted according to the first comparison result.

[0008] In one optional embodiment, each of the first branch ducts is provided with a first flow sensor, which is electrically connected to the control system; the first flow sensor is used to acquire the first actual airflow rate flowing through the corresponding first branch duct and transmit the first actual airflow rate to the control system; the control system is further used to: The first actual airflow of each of the first branch ducts is compared with the corresponding set airflow to obtain a second comparison result, and the opening degree of the corresponding first airflow regulating valve is controlled according to the second comparison result.

[0009] In one optional implementation, the machine learning module of the control system is used to record historical control data and establish a historical database based on the historical control data; the control system is also used to: The actual glass thickness of the glass being traction-formed and the actual pulling speed during the glass traction-formation process are obtained. Based on the actual glass thickness and the actual pulling speed, the corresponding control parameters in the historical database are obtained. Then, the output frequency of the frequency converter is controlled according to the control parameters, and the opening degree of each of the first airflow regulating valves is adjusted.

[0010] In an optional embodiment, a first temperature sensor electrically connected to the control system is further included. The first temperature sensor is used to acquire the actual outdoor temperature value and transmit the actual outdoor temperature value to the control system. A second temperature sensor is installed inside the main air duct. The second temperature sensor is used to acquire the actual air temperature value inside the main air duct and transmit the actual air temperature value to the control system. The control system is used to: The corresponding control parameters in the historical database are obtained based on the actual glass thickness, the actual pulling speed, the actual wind temperature value, and the actual outdoor temperature value.

[0011] In one alternative implementation, within the same temperature control zone, the temperature detection system includes multiple third temperature sensors, and the actual temperature value is calculated based on the temperature values ​​detected by the multiple third temperature sensors.

[0012] In one optional implementation, the end of the first branch duct away from the main duct is connected to a second branch duct; in the same temperature control zone, the second branch duct is provided with an air outlet corresponding to the position of the third temperature sensor.

[0013] In one optional embodiment, a vibration sensor is provided at the bearing of the cooling fan. The vibration sensor is used to acquire the actual vibration amplitude of the bearing of the cooling fan and transmit the actual vibration amplitude to the control system. The control system is further used to: The actual vibration amplitude is compared with the standard vibration amplitude. If the actual vibration amplitude is greater than the standard vibration amplitude, the warning device is controlled to issue an alarm.

[0014] In one optional embodiment, the main duct is equipped with a second airflow regulating valve, which is electrically connected to the control system; the control system is further configured to: The opening degree of the second airflow regulating valve is controlled based on the first comparison result.

[0015] In one optional embodiment, a first pressure sensor is provided inside each of the first branch ducts. The first pressure sensor is used to acquire the first actual air pressure inside the corresponding first branch duct and transmit the first actual air pressure to the control system. The control system is used to: The opening degree of the first airflow regulating valve is controlled according to the first comparison result and the first actual wind pressure.

[0016] In one optional embodiment, a second flow sensor is installed inside the main duct. The second flow sensor is used to acquire a second actual airflow rate inside the main duct and transmit the second actual airflow rate to the control system. The control system is used to: The opening degree of the first airflow regulating valve is controlled according to the first comparison result and the second actual airflow.

[0017] In one optional embodiment, a second pressure sensor is installed inside the main air duct. The second pressure sensor is used to acquire a second actual air pressure inside the main air duct and transmit the second actual air pressure to the control system. The control system is used to: The opening degree of the first airflow regulating valve is controlled according to the first comparison result and the second actual wind pressure.

[0018] Secondly, the present invention also provides a control method applied to the glass tin bath bottom cooling air system provided in the first aspect above, the control method comprising the following steps: The temperature detection system controls the detection of the corresponding temperature control zone and obtains the actual temperature value of the corresponding temperature control zone; The actual temperature value of each temperature control zone is compared with the corresponding set temperature value to obtain a first comparison result, and the opening degree of the corresponding first airflow regulating valve is controlled according to the first comparison result.

[0019] According to a control method of the present invention, at least the following beneficial effects are achieved: By installing temperature detection systems corresponding to multiple temperature control zones on the tank bottom plate, and a first branch duct corresponding to each temperature control zone on the main air duct, and a first airflow regulating valve on each first branch duct, the system first detects the temperature of the corresponding temperature control zone to obtain the actual temperature value of the control zone. Then, the control system compares the actual temperature value of the control zone with the corresponding set temperature value to obtain a first comparison result (i.e., the temperature difference). Based on the first comparison result, the system controls the opening of the first airflow regulating valve of the corresponding first branch duct. This allows for flexible control of the opening of the first airflow regulating valve of the corresponding first branch duct according to the actual temperature value of different temperature control zones. This enables dynamic and precise control of the temperature at different locations on the tank bottom plate to maintain a relatively consistent set temperature value (i.e., the temperature remains basically the same) based on the actual temperature value, while only using the same cooling fan as the air source, effectively preventing the tank bottom plate from being corroded by high temperature. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a glass tin bath bottom cooling air system applied to the bottom plate of the bath according to an embodiment of the present invention; Figure 2 This is a bottom view of the temperature detection system and the tank bottom plate assembly in an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures: 100-Tank bottom plate, 110-Temperature control zone, 200-Control system, 300-Temperature detection system, 310-Third temperature sensor, 400-Cooling fan, 510-Main air duct, 511-Second temperature sensor, 512-Second airflow regulating valve, 513-Second flow sensor, 514-Second pressure sensor, 520-First branch air duct, 521-First airflow regulating valve, 522-First flow sensor, 523-First pressure sensor, 530-Second branch air duct, 531-Air outlet, 600-Frequency converter, 700-First temperature sensor, 800-Vibration sensor, 900-Pull speed sensor, 1000-Thickness detection sensor. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this embodiment, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this embodiment. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this embodiment, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment according to the specific circumstances.

[0026] The following is combined Figure 1 and Figure 2 The following describes embodiments of the present invention.

[0027] According to a first aspect of the present invention, a glass tin bath bottom cooling air system is provided for controlling the temperature of a glass tin bath bottom plate 100. The bottom plate 100 is divided into multiple temperature control zones 110 along its length. The cooling air system includes a control system 200, a cooling fan 400 electrically connected to the control system 200, and multiple temperature detection systems 300. The multiple temperature detection systems 300 are correspondingly arranged in the multiple temperature control zones 110, and are used to acquire the temperature of the corresponding temperature control zone. The actual temperature value of 110 is obtained and transmitted to the control system 200; the air outlet of the cooling fan 400 is connected to the main air duct 510 and is used to output cooling air. The main air duct 510 is connected to multiple first branch air ducts 520. The ends of the multiple first branch air ducts 520 opposite to the main air duct 510 are set to correspond one-to-one with multiple temperature control zones 110 and are used to blow cooling air to the corresponding temperature control zone 110; each first branch air duct 520 is equipped with a first airflow regulating valve 521, and the first airflow regulating valve 521 is electrically connected to the control system 200. Control system 200 is used for: The actual temperature value of each temperature control zone 110 is compared with the corresponding set temperature value to obtain a first comparison result, and the opening degree of the corresponding first airflow regulating valve 521 is controlled according to the first comparison result.

[0028] In this embodiment, the cooling air system has a temperature detection system 300 corresponding to each of the multiple temperature control zones 110 on the bottom plate 100. A first branch duct 520 is installed on the main duct 510 corresponding to each temperature control zone 110, and a first airflow regulating valve 521 is installed in each first branch duct 520. During operation, the temperature detection system 300 first detects the temperature of the corresponding temperature control zone 110 to obtain the actual temperature value. Then, the control system 200 compares the actual temperature value of the temperature control zone 110 with the corresponding set temperature value. The comparison yields a first comparison result (i.e., the magnitude of the temperature difference). Based on the first comparison result, the opening degree of the first airflow regulating valve 521 corresponding to the first branch duct 520 is controlled. This allows for flexible control of the opening degree of the first airflow regulating valve 521 corresponding to the first branch duct 520 according to the actual temperature values ​​of different temperature control zones 110. This enables dynamic and precise control of the temperature at different locations of the tank bottom plate 100 to be kept at the same set temperature value (i.e., the temperature remains basically consistent) based on the actual temperature value, while only using the same cooling fan 400 as the air source. This effectively prevents the tank bottom plate 100 from being corroded by high temperature.

[0029] It should be noted that the set temperature value mentioned in the text refers to the temperature value of the tank bottom plate 100 when there is no risk of high-temperature corrosion. Specifically, since the temperature of the tank bottom plate 100 is controlled within 120℃, it can effectively prevent the corrosion of the tank bottom plate 100 due to excessive temperature. Therefore, the set temperature value can be set within 120℃. In specific applications, the set temperature value can be set to 90℃, 95℃, 98℃, 100℃, 105℃, 110℃, etc.

[0030] It is understandable that the cooling air system of this embodiment needs to be activated for cooling only when the actual temperature value of the temperature control zone 110 of the bottom plate 100 is greater than the set temperature value. Therefore, the temperature difference obtained by subtracting the set temperature value from the actual temperature value is used as the first comparison result. If the temperature difference between the actual temperature value and the set temperature value of a certain temperature control zone 110 is large, the opening of the first airflow regulating valve 521 of the first branch duct 520 corresponding to the temperature control zone 110 needs to be opened to a larger range. If the temperature difference between the actual temperature value and the set temperature value of a certain temperature control zone 110 is small, the opening of the first airflow regulating valve 521 of the first branch duct 520 corresponding to the temperature control zone 110 needs to be opened to a smaller range.

[0031] It should be noted that in this embodiment, when the temperature difference between the actual temperature value and the set temperature value of the temperature control zone 110 is within a certain range, it is only necessary to control and adjust the opening of each of the first airflow regulating valves 521 separately. There is no need to control and adjust the operating parameters such as the working frequency and speed of the cooling fan 400. This allows for dynamic and precise control of the temperature at different positions of the tank bottom plate 100 to be basically kept at the same set temperature value. This reduces the energy consumption generated during the frequent control and adjustment of the operating parameters such as the working frequency and speed of the cooling fan 400, thereby reducing the energy consumption of the cooling fan 400. Furthermore, the absence of control and adjustment of the operating frequency and speed of the cooling fan 400 facilitates the calculation and periodic statistics of the power consumption of the cooling fan 400. This enables the identification of early fault characteristics through AI diagnosis, providing early warnings and reducing unplanned downtime.

[0032] It is understood that the length direction and the width direction of the bottom plate 100 are perpendicular to each other. For ease of description, let's use... Figure 2 The first and second directions are described as the length direction and width direction of the bottom plate 100, respectively, but are not used to specifically limit the length direction and width direction of the bottom plate 100.

[0033] In specific applications, the first airflow regulating valve 521 is selected as a louvered electric airflow regulating valve.

[0034] like Figure 1 As shown, in some embodiments, the cooling air system further includes a frequency converter 600 electrically connected to the control system 200 and the cooling fan 400, the frequency converter 600 being used to control the operating parameters of the cooling fan 400; the control system 200 is also used for: The output frequency of inverter 600 is adjusted based on the first comparison result.

[0035] Considering that even if the opening of the first airflow regulating valve 521 is adjusted to the maximum, the cooling airflow blown by the first branch duct 520 to the corresponding temperature control zone 110 cannot reduce the actual temperature value of the temperature control zone 110 to the set temperature value under the premise that the airflow of the cooling fan 400 remains constant per unit time, the ideal cooling effect cannot be achieved. In this embodiment, the operating parameters of the cooling fan 400 are controlled and adjusted by the frequency converter 600. When the first comparison result (i.e., the temperature difference between the actual temperature value and the set temperature value) is detected to exceed the upper limit of the cooling effect that can be achieved by adjusting the opening of the first airflow regulating valve 521 to the maximum, the output frequency of the frequency converter 600 is precisely controlled, thereby increasing the operating parameters of the cooling fan 400 such as voltage, current, power, frequency, and speed, and thus increasing the cooling airflow through the main duct 510 per unit time. This is suitable for effectively cooling the temperature control zone 110 with a wider range of first comparison results.

[0036] Understandably, when the opening of the first airflow regulating valve 521 is adjusted to the lower limit while ensuring that the cooling airflow passes through the first branch duct 520, the cooling airflow blown from the first branch duct 520 to the corresponding temperature control zone 110 achieves the ideal cooling effect and there is still excess cooling airflow. At this point, the output frequency of the frequency converter 600 can be precisely controlled, thereby reducing the operating parameters of the cooling fan 400, such as voltage, current, power, frequency, and speed, and thus reducing the cooling airflow passing through the main duct 510 per unit time; thus satisfying the requirement of reducing energy consumption while achieving the ideal cooling effect.

[0037] It should be noted that the operating parameters of the cooling fan 400, such as voltage, current, power, frequency, and speed, can be transmitted to the control system 200 via the frequency converter 600. This data is used to assess energy efficiency, motor health, system regulation, and other conditions. Combined with AI diagnostics, the system can identify early fault characteristics, provide early warnings, and reduce unplanned downtime.

[0038] It should be noted that the control system 200 is also used to calculate and periodically track the continuous and cumulative operating time of the cooling fan 400; and combined with AI diagnostics, it identifies early fault characteristics, provides early warnings, and reduces unplanned downtime.

[0039] like Figure 1 As shown, in some embodiments, each first branch duct 520 is provided with a first flow sensor 522, which is electrically connected to the control system 200. The first flow sensor 522 is used to obtain the first actual airflow rate flowing through the corresponding first branch duct 520 and transmit the first actual airflow rate to the control system 200. The control system 200 is also used to: The first actual airflow of each first branch duct 520 is compared with the corresponding set airflow to obtain a second comparison result, and the opening degree of the corresponding first airflow regulating valve 521 is controlled according to the second comparison result.

[0040] In this embodiment, after the cooling air system initially controls and adjusts the opening of the first airflow regulating valve 521 based on the first comparison result, it also uses the first flow sensor 522 to detect and obtain the first actual airflow through the corresponding first branch duct 520 in real time. When there is a difference between the first actual airflow and the set airflow due to blockage or other reasons inside the first branch duct 520 (i.e., the second comparison result), the system further controls and adjusts the opening of the first airflow regulating valve 521 based on the second comparison result. This ensures that the cooling airflow blown through the first branch duct 520 to the corresponding temperature control zone 110 accurately reduces the temperature control zone 110 from the actual temperature value to the set temperature value, thereby achieving the ideal cooling effect.

[0041] It should be noted that the set airflow mentioned in the text refers to the airflow that flows through the corresponding first branch duct 520 after the opening of the corresponding first airflow regulating valve 521 is controlled and adjusted according to the first comparison result; the set airflow has different corresponding values ​​depending on different first comparison results.

[0042] Understandably, the difference between the actual airflow and the set airflow is used as the second comparison result.

[0043] In some embodiments, the machine learning module of the control system 200 is used to record historical control data and establish a historical database based on the historical control data; the control system 200 is also used to: The actual glass thickness of the glass to be traction-formed and the actual pulling speed during the glass traction-formation process are obtained. Based on the actual glass thickness and the actual pulling speed, the corresponding control parameters in the historical database are obtained. Then, the output frequency of the frequency converter 600 is controlled according to the control parameters, and the opening degree of each first airflow regulating valve 521 is adjusted.

[0044] The cooling air system in this embodiment obtains the closest control parameters corresponding to the glass thickness and drawing speed from the historical database in advance, based on the actual glass thickness and drawing speed during the tin bath process. The system then uses the frequency converter 600 to control the voltage, current, power, frequency, and speed of the cooling fan 400 in the initial state according to these control parameters. Furthermore, the system adjusts the opening of the first airflow regulating valve 521 in the initial state according to the control parameters, pre-adjusting the cooling air volume blown by the first branch duct 520 to the corresponding temperature control zone 110. This avoids delays and prevents significant temperature differences between the actual and set temperatures in the temperature control zone 110 before adjustment, thus reducing energy consumption and operating costs.

[0045] It should be noted that the machine learning module optimizes the recorded historical regulation data (specifically, by filtering and removing abnormal data) and forms a historical regulation dataset, which is then normalized to establish a historical database.

[0046] In specific applications, such as Figure 1 As shown, in this embodiment, the actual pulling speed during the glass traction forming process is detected by the pulling speed sensor 900 and transmitted to the control system 200; the actual glass thickness of the traction-formed glass is detected by the thickness detection sensor 1000; in another alternative embodiment, the actual pulling speed and actual glass thickness can be transmitted to the control system 200 via an external input keyboard.

[0047] like Figure 1As shown, specifically, the cooling air system also includes a first temperature sensor 700 electrically connected to the control system 200. The first temperature sensor 700 is used to acquire the actual outdoor temperature value and transmit the actual outdoor temperature value to the control system 200. A second temperature sensor 511 is installed inside the main air duct 510. The second temperature sensor 511 is used to acquire the actual air temperature value inside the main air duct 510 and transmit the actual air temperature value to the control system 200. The control system 200 is used for: The corresponding control parameters are obtained from the historical database based on the actual glass thickness, actual drawing speed, actual wind temperature value, and actual outdoor temperature value.

[0048] Because the air intake of the cooling fan 400 draws in gas from the external environment (atmosphere), different outdoor temperatures will achieve different cooling effects based on the same cooling air volume blown into the temperature control zone 110. The cooling air system of this embodiment comprehensively considers four types of influencing factors: actual glass thickness, actual drawing speed, actual air temperature value, and actual outdoor temperature value. It obtains the corresponding control parameters from the historical database to ensure that the operating parameters of the cooling fan 400 in the initial state and the opening degree of the first airflow regulating valve 521 in the initial state are accurately preset. This ensures that the pre-adjusted cooling air volume blown by the first branch duct 520 into the corresponding temperature control zone 110 achieves the ideal cooling effect and avoids lag. Adjustment is only made after the temperature difference between the actual temperature value and the set temperature value of the temperature control zone 110 becomes significant. This embodiment is beneficial to reducing energy consumption and operating costs.

[0049] like Figure 2 As shown, in some embodiments, within the same temperature control zone 110, the temperature detection system 300 includes multiple third temperature sensors 310, and the actual temperature value is calculated based on the temperature values ​​detected by the multiple third temperature sensors 310. Considering that there may be some temperature deviations at different locations within the same temperature control zone 110, this embodiment arranges multiple third temperature sensors 310 in each temperature control zone 110 and calculates the actual temperature value of the temperature control zone 110 based on the temperature values ​​detected by the multiple third temperature sensors 310. This facilitates precise control and adjustment of the opening of the first airflow regulating valve 521 of the corresponding first branch duct 520, achieving dynamic and precise control of the temperature at different locations of the tank bottom plate 100 to maintain a basically the same set temperature value based on the actual temperature value, using only the same cooling fan 400 as the air source.

[0050] like Figure 2As shown, specifically, in the same temperature control zone 110, multiple third temperature sensors 310 are arranged in an array, so that the value calculated based on the temperature values ​​detected by the multiple third temperature sensors 310 can better reflect the actual temperature value of the temperature control zone 110.

[0051] In specific applications, within the same temperature control zone 110, the mode of the temperature values ​​detected by multiple third temperature sensors 310 can be selected as the actual temperature value, or the average value of the temperature values ​​detected by multiple third temperature sensors 310 can be selected as the actual temperature value, or the median value of the temperature values ​​detected by multiple third temperature sensors 310 can be selected as the actual temperature value.

[0052] In specific applications, the size of the temperature control zone 110 varies in different locations, and correspondingly, the number of third temperature sensors 310 in different temperature control zones 110 also varies. That is, the number of third temperature sensors 310 in the temperature control zone 110 is reasonably selected according to the size of the temperature control zone 110.

[0053] like Figure 1 As shown, in some embodiments, the end of the first branch duct 520 facing away from the main duct 510 is connected to a second branch duct 530; in the same temperature control zone 110, the second branch duct 530 is provided with an air outlet 531 corresponding to the position of the third temperature sensor 310. By providing an air outlet 531 corresponding to the area where each third temperature sensor 310 is located, different positions in each temperature control zone 110 are effectively cooled, ensuring that the temperature of different positions of the tank bottom plate 100 is dynamically and accurately controlled to basically maintain the same set temperature value based on the actual temperature value, using only the same cooling fan 400 as the air source.

[0054] like Figure 1 As shown, in some embodiments, a vibration sensor 800 is provided at the bearing of the cooling fan 400. The vibration sensor 800 is used to obtain the actual vibration amplitude of the bearing of the cooling fan 400 and transmit the actual vibration amplitude to the control system 200. The control system 200 is also used for: The actual vibration amplitude is compared with the standard vibration amplitude. If the actual vibration amplitude is greater than the standard vibration amplitude, the control and early warning equipment will sound an alarm.

[0055] In this embodiment, the vibration sensor 800 acquires the actual vibration amplitude at the bearing of the cooling fan 400 in real time. When the actual vibration amplitude at the bearing of the cooling fan 400 matches the early fault characteristics of the cooling fan 400, the system controls the early warning device to issue an alarm, providing an early warning to the user and reminding them of the potential risk of failure of the cooling fan 400.

[0056] It should be noted that the standard vibration amplitude mentioned in the article refers to the vibration amplitude of the bearing of the cooling fan 400 when the cooling fan 400 exhibits early failure characteristics.

[0057] In practical applications, the early warning device selected is an audible and visual alarm.

[0058] like Figure 1 As shown, in some embodiments, the main air duct 510 is equipped with a second airflow regulating valve 512, which is electrically connected to the control system 200; the control system 200 is also used for: The opening degree of the second airflow regulating valve 512 is controlled based on the first comparison result.

[0059] In this embodiment, the cooling air system uses a second airflow regulating valve 512 on the main air duct 510. When the first comparison results of each temperature control zone 110 are consistent, only the opening of the second airflow regulating valve 512 needs to be controlled and adjusted. There is no need to control and adjust the opening of each first airflow regulating valve 521. This allows the temperature of different positions of the bottom plate 100 to be dynamically and accurately controlled to remain at the same set temperature value based on the actual temperature value, using only the same cooling fan 400 as the air source. This makes the control simpler.

[0060] In specific applications, the second airflow regulating valve 512 is selected as a louvered electric airflow regulating valve.

[0061] like Figure 1 As shown, in some embodiments, each first branch duct 520 is provided with a first pressure sensor 523. The first pressure sensor 523 is used to obtain the first actual air pressure inside the corresponding first branch duct 520 and transmit the first actual air pressure to the control system 200. The control system 200 is used to: The opening degree of the first airflow regulating valve 521 is controlled according to the first comparison result, the first actual flow rate, and the first actual wind pressure.

[0062] The cooling air system of this embodiment, by comprehensively considering the first comparison result of each temperature control zone 110 and the first actual flow rate and first actual air pressure of the corresponding first branch duct 520, can more accurately control and adjust the opening of the first airflow regulating valve 521 of the corresponding first branch duct 520, which is conducive to dynamically and accurately controlling the temperature of different positions of the bottom plate 100 to basically maintain the same set temperature value.

[0063] like Figure 1 As shown, in some embodiments, a second flow sensor 513 is provided inside the main air duct 510. The second flow sensor 513 is used to obtain the second actual airflow inside the main air duct 510 and transmit the second actual airflow to the control system 200. The control system 200 is used to: The opening degree of the first airflow regulating valve 521 is determined based on the first comparison result and the second actual airflow control.

[0064] The cooling air system of this embodiment, by comprehensively considering the first comparison result of each temperature control zone 110 and the second actual flow rate of the main air duct 510, can more accurately control and adjust the opening of the first airflow regulating valve 521 of the corresponding first branch air duct 520, which is conducive to dynamically and accurately controlling the temperature of different positions of the bottom plate 100 to basically maintain the same set temperature value.

[0065] like Figure 1 As shown, specifically, a second pressure sensor 514 is installed inside the main air duct 510. The second pressure sensor 514 is used to obtain the second actual air pressure inside the main air duct 510 and transmit the second actual air pressure to the control system 200. The control system 200 is used for: The opening degree of the first airflow regulating valve 521 is controlled according to the first comparison result, the second actual airflow, and the second actual air pressure.

[0066] The cooling air system of this embodiment, by comprehensively considering the first comparison result of each temperature control zone 110 and the second actual flow rate and second actual air pressure of the main air duct 510, can more accurately control and adjust the opening of the first airflow regulating valve 521 of the corresponding first branch air duct 520, which is conducive to dynamically and accurately controlling the temperature of different positions of the bottom plate 100 to basically maintain the same set temperature value.

[0067] In specific applications, the first flow sensor 522, the first pressure sensor 523, the second flow sensor 513, and the second pressure sensor 514 can respectively acquire the internal airflow of the first branch duct 520, the internal pressure of the first branch duct 520, the internal airflow of the main duct 510, and the internal pressure of the main duct 510, and transmit them to the control system 200 for recording, so as to identify early fault characteristics through AI diagnosis, provide early warning, and reduce unplanned downtime.

[0068] According to a second aspect of the present invention, a control method is also provided, applied to the glass tin bath bottom cooling air system provided in the first aspect of the present invention. The control method includes the following steps: The temperature detection system 300 controls the temperature detection of the corresponding temperature control zone 110 and obtains the actual temperature value of the corresponding temperature control zone 110. The actual temperature value of each temperature control zone 110 is compared with the corresponding set temperature value to obtain a first comparison result, and the opening degree of the corresponding first airflow regulating valve 521 is controlled according to the first comparison result.

[0069] The control method of this embodiment involves setting a temperature detection system 300 corresponding to each of the multiple temperature control zones 110 on the bottom plate 100. A first branch duct 520 is installed on the main duct 510 corresponding to each temperature control zone 110, and a first airflow regulating valve 521 is installed in each first branch duct 520. During use, the temperature detection system 300 first detects the temperature of the corresponding temperature control zone 110 to obtain the actual temperature value of that temperature control zone 110. Then, the control system 200 compares the actual temperature value of the temperature control zone 110 with the corresponding set temperature value. The first comparison result (i.e., the temperature difference value) is obtained, and then the opening degree of the first airflow regulating valve 521 corresponding to the first branch duct 520 is controlled according to the first comparison result. This realizes that the opening degree of the first airflow regulating valve 521 corresponding to the first branch duct 520 can be flexibly controlled according to the actual temperature value of different temperature control zones 110. This achieves dynamic and precise control of the temperature of different positions of the tank bottom plate 100 to basically maintain the same set temperature value (i.e., the temperature is basically consistent) based on the actual temperature value, which only requires the same cooling fan 400 as the air source, effectively preventing the tank bottom plate 100 from being corroded by high temperature.

[0070] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the present invention.

Claims

1. A cooling air system for the bottom of a glass tin bath, characterized in that, The cooling system is used to control the temperature of the bottom plate (100) of a glass tin bath. The bottom plate (100) is divided into multiple temperature control zones (110) along its length. The cooling system includes: Control system (200); Multiple temperature detection systems (300) are set in multiple temperature control zones (110) in a one-to-one correspondence. The temperature detection system (300) is used to obtain the actual temperature value of the corresponding temperature control zone (110) and transmit the actual temperature value to the control system (200). Cooling fan (400), used to output cooling air; The main air duct (510) is connected to the air delivery end of the cooling fan (400); Multiple first branch air ducts (520) are set one-to-one with multiple temperature control zones (110). One end of the first branch air duct (520) is connected to the main air duct (510), and the other end is used to blow cooling air to the corresponding temperature control zone (110). The first airflow regulating valve (521) is installed in the first branch duct (520) in a one-to-one correspondence. The first airflow regulating valve (521) is electrically connected to the control system (200). The control system (200) is used for: The actual temperature value of each temperature control zone (110) is compared with the corresponding set temperature value to obtain a first comparison result, and the opening degree of the corresponding first airflow regulating valve (521) is controlled according to the first comparison result.

2. The glass tin bath bottom cooling air system according to claim 1, characterized in that, It also includes a frequency converter (600) electrically connected to the control system (200) and the cooling fan (400), the frequency converter (600) being used to control the operating parameters of the cooling fan (400); the control system (200) is further used for: The output frequency of the inverter (600) is adjusted according to the first comparison result.

3. The glass tin bath bottom cooling air system according to claim 1 or 2, characterized in that, Each of the first branch ducts (520) is equipped with a first flow sensor (522), which is electrically connected to the control system (200). The first flow sensor (522) is used to acquire the first actual airflow rate flowing through the corresponding first branch duct (520) and transmit the first actual airflow rate to the control system (200). The control system (200) is also used to: The first actual airflow of each of the first branch ducts (520) is compared with the corresponding set airflow to obtain a second comparison result, and the opening degree of the corresponding first airflow regulating valve (521) is controlled according to the second comparison result.

4. The glass tin bath bottom cooling air system according to claim 2, characterized in that, The machine learning module of the control system (200) is used to record historical control data and establish a historical database based on the historical control data; the control system (200) is also used for: The actual glass thickness of the glass to be traction-formed and the actual pulling speed during the glass traction-formation process are obtained. Based on the actual glass thickness and the actual pulling speed, the corresponding control parameters in the historical database are obtained. Then, the output frequency of the frequency converter (600) is controlled according to the control parameters, and the opening degree of each of the first airflow regulating valves (521) is adjusted.

5. The glass tin bath bottom cooling air system according to claim 4, characterized in that, It also includes a first temperature sensor (700) electrically connected to the control system (200), the first temperature sensor (700) being used to acquire the actual outdoor temperature value of the outdoor environment and transmit the actual outdoor temperature value to the control system (200); a second temperature sensor (511) is provided inside the main air duct (510), the second temperature sensor (511) being used to acquire the actual air temperature value inside the main air duct (510) and transmit the actual air temperature value to the control system (200); the control system (200) is used for: The corresponding control parameters in the historical database are obtained based on the actual glass thickness, the actual pulling speed, the actual wind temperature value, and the actual outdoor temperature value.

6. The glass tin bath bottom cooling air system according to claim 1, characterized in that, In the same temperature control zone (110), the temperature detection system (300) includes a plurality of third temperature sensors (310), and the actual temperature value is calculated based on the temperature values ​​detected by the plurality of third temperature sensors (310).

7. The glass tin bath bottom cooling air system according to claim 6, characterized in that, The first branch duct (520) is connected to a second branch duct (530) at the end opposite to the main duct (510); in the same temperature control zone (110), the second branch duct (530) is provided with an air outlet (531) at the position corresponding to the third temperature sensor (310).

8. The glass tin bath bottom cooling air system according to claim 1, 2, 4, 5, 6, or 7, characterized in that, A vibration sensor (800) is installed at the bearing of the cooling fan (400). The vibration sensor (800) is used to acquire the actual vibration amplitude of the bearing of the cooling fan (400) and transmit the actual vibration amplitude to the control system (200). The control system (200) is also used to: The actual vibration amplitude is compared with the standard vibration amplitude. If the actual vibration amplitude is greater than the standard vibration amplitude, the early warning device is controlled to issue an alarm. And / or, the main air duct (510) is provided with a second airflow regulating valve (512), the second airflow regulating valve (512) being electrically connected to the control system (200); the control system (200) is further configured to: The opening degree of the second airflow regulating valve (512) is controlled according to the first comparison result.

9. The glass tin bath bottom cooling air system according to claim 1, characterized in that, Each of the first branch ducts (520) is equipped with a first pressure sensor (523). The first pressure sensor (523) is used to acquire the first actual air pressure inside the corresponding first branch duct (520) and transmit the first actual air pressure to the control system (200). The control system (200) is used to: Based on the first comparison result and the opening degree of the first airflow regulating valve (521) corresponding to the first actual wind pressure control; And / or, a second flow sensor (513) is provided inside the main air duct (510). The second flow sensor (513) is used to acquire the second actual airflow inside the main air duct (510) and transmit the second actual airflow to the control system (200). The control system (200) is used to: Based on the first comparison result and the opening degree of the first airflow regulating valve (521) corresponding to the second actual airflow control; And / or, a second pressure sensor (514) is provided inside the main air duct (510). The second pressure sensor (514) is used to obtain the second actual air pressure inside the main air duct (510) and transmit the second actual air pressure to the control system (200). The control system (200) is used to: The opening degree of the first airflow regulating valve (521) is determined based on the first comparison result and the second actual wind pressure control.

10. A control method applied to the glass tin bath bottom cooling air system according to any one of claims 1 to 9, characterized in that, The control method includes the following steps: The temperature detection system (300) detects the corresponding temperature control zone (110) and obtains the actual temperature value of the corresponding temperature control zone (110); The actual temperature value of each temperature control zone (110) is compared with the corresponding set temperature value to obtain a first comparison result, and the opening degree of the corresponding first airflow regulating valve (521) is controlled according to the first comparison result.

Images