A vertically distributed platinum channel cooling and feeding system and its usage method

Abstract

This invention discloses a vertically distributed platinum channel cooling and feeding system and its usage method, belonging to the field of TFT-LCD substrate glass technology. It includes a combined system, a secondary feeding system, an external heating / insulating module, and a supporting structure; the secondary feeding system is located below the combined system; the external heating / insulating module and the supporting structure are located outside the combined system and the secondary feeding system; the combined system includes a circular cooling transition pipe, a main cooling section, a primary feeding pipe, and a primary feeding outlet located at the bottom of the primary feeding pipe, arranged vertically from top to bottom; the secondary feeding system includes a secondary feeding pipe and a secondary feeding inlet located at the top of the secondary feeding pipe; the primary feeding outlet is connected to the secondary feeding inlet.

Description

Technical Field

[0001] This invention belongs to the field of TFT-LCD substrate glass technology, specifically relating to a vertically distributed platinum channel cooling and feeding system and its usage method. Background Technology

[0002] The platinum channel is the core hot-end equipment in the substrate glass manufacturing process, characterized by its large span and complex production control. Functionally, it mainly consists of several parts: heating, clarification, cooling, stirring, quenching, and feeding. The entire platinum channel unit is made of a precious metal alloy of Pt and Rh, with a single line using hundreds of kilograms of precious metals. The manufacturing process is complex, and the operating environment is harsh, requiring long-term operation within a high-temperature range of 1200℃ to 1650℃. Simultaneously, the high-temperature molten glass inside continuously erodes and scours the inner wall of the substrate. Therefore, the design of the platinum channel requires comprehensive consideration of equipment function, structural reliability, long-term lifespan, and cost. According to the traditional platinum channel structure, its rear section mainly includes three parts: stirring, cooling, and feeding, connected sequentially along the horizontal span. Each section presents its own design challenges and operational issues.

[0003] The mixing zone features a discharge pipe at its bottom, located at the lowest point of the entire rear section. This allows for emergency discharge and liquid level restoration, addressing systemic defects or severe blockages in the glass system. However, due to the emergency nature of the discharge pipe, the actual discharge process is slow and inefficient. The drop in the platinum level and exposure of the empty pipe at high temperatures pose a significant risk to the platinum itself. Prolonged discharge leads to temperature changes and oxidation / vaporization of the inner wall, significantly impacting the equipment. The cooling section, located after mixing, primarily functions for rapid heat dissipation. Therefore, the cross-sectional shape of this section is typically designed as a flat structure to reduce the distance between the heat source at the center of the molten glass and the heat dissipation surface, effectively improving heat dissipation. However, the flat pipe structure carries a significant risk of top collapse during the initial empty pipe stage of heating. This places extremely high demands on material thickness and strength. The varying degrees of collapse at the top of the flat pipe during this stage also indirectly damage the thermocouples, impacting the precise control of temperature and flow rate in subsequent production. Due to the heat dissipation method of the flat tubes in the cooling section and the structural characteristics of the laterally distributed cooling tubes (i.e., the system support mechanism is at the bottom of the flat tubes), uneven temperature distribution of the molten glass cross-section within the tubes is inevitable. The vertically distributed feeding system connected to the cooling section needs to convert the horizontally flowing molten glass into a vertical flow, and an open leveling pipe for balancing atmospheric pressure is reserved above it. However, due to the inherent properties of the structure, temperature and glass properties will inevitably vary in this area. Under abnormal conditions, disturbances in the top liquid surface area can easily lead to bright-line streaks or other defects.

[0004] Considering the shortcomings of the existing systems in each of the above sections, the entire integrated welded pipe body in the latter half cannot achieve continuous production and high-efficiency conversion at a low cost by expanding, replacing or upgrading local functions when a local section is damaged or the heat dissipation capacity reaches its limit. Summary of the Invention

[0005] To overcome the shortcomings of traditional platinum channel systems with horizontally distributed sections, such as equipment reliability issues, heat dissipation uniformity problems, and process control difficulties, the present invention aims to provide a vertically distributed platinum channel cooling and feeding system and its usage method. By redesigning the platinum channel layout, the system integrates stirring, cooling, feeding, and unloading, effectively improving equipment operation and production control levels.

[0006] To achieve the above objectives, the present invention employs the following technical solution:

[0007] This invention provides a vertically distributed platinum channel cooling and feeding system, including a combined system, a two-stage feeding system, an external heating / insulation module, and a supporting structure;

[0008] The secondary feeding system is located below the combined system; the peripheral heating / insulation module and the supporting structure are located outside the combined system and the secondary feeding system.

[0009] The combined system includes a circular cooling transition pipe, a cooling main section, a primary feed pipe, and a primary feed outlet located at the bottom of the primary feed pipe, arranged vertically from top to bottom.

[0010] The secondary feeding system includes a secondary feeding pipe and a secondary feeding inlet located at the top of the secondary feeding pipe;

[0011] The primary material outlet is connected to the secondary material inlet.

[0012] In the specific implementation process, the single-sided gap of the inner diameter distance combination system of the peripheral heating / insulation module and the tube body of the secondary feeding system is 15mm.

[0013] In practice, the supporting structure includes an outer wrapping part and a segmented bottom support part;

[0014] The outer wrapping portion is located in the straight section of the cooling transition pipe, the main cooling section, the primary feeding pipe, and the secondary feeding pipe;

[0015] The segmented bottom support is located at the connection point between the cooling transition pipe, the main cooling section, the primary feeding pipe, and the secondary feeding pipe.

[0016] In the specific implementation process, several temperature monitoring structures are equidistantly arranged on the combined system and the secondary feeding system.

[0017] In the specific implementation process, a cooling interface is provided at the top of the cooling transition pipe; a docking flange is fixedly connected to the cooling interface.

[0018] In the specific implementation process, the lower end of the primary material supply outlet is provided with a part without refractory material wrapping.

[0019] In practice, the diameter of the secondary feeding inlet is larger than the diameter of the primary feeding outlet; the combined system and the secondary feeding system are connected by insertion.

[0020] The present invention also provides a method for using a vertically distributed platinum channel cooling and feeding system, comprising the following steps:

[0021] The front section of the platinum channel cooling and feeding system stops feeding, and the rear section of the platinum channel cooling and feeding system is pulled out. After being pulled out, the outlet of the secondary feeding pipe that has been separated and is flowing out of the glass melt is cooled to slow down the flow rate of the glass melt flowing through the cooling transition pipe, the cooling main section, and the primary feeding pipe.

[0022] Once the cross-sectional area of ​​the molten glass is reduced to 30mm, a receiving trough is placed below the forming device in advance. The forming device is then moved to one side, the cooling air is removed, and the power of the external heating / insulation module is increased. The outlet flow rate of the secondary feeding pipe is also increased to drain the molten glass in the rear area, thus completing the emergency unloading.

[0023] It also includes a local cold repair step, which is as follows:

[0024] After emergency unloading is completed, the target section is horizontally withdrawn through the combined system and the external support structure of the secondary feeding system to complete the local cold repair.

[0025] It also includes a replacement cold repair step, which is as follows:

[0026] After emergency unloading is completed, the cooling transition pipe and cooling main section of the combined system are removed and replaced while the pipe is empty. Then, feeding is resumed to re-establish the liquid level and complete the replacement cold repair.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] This invention provides a vertically distributed platinum channel cooling and feeding system. First, the system adopts a vertically distributed circular cooling structure, with the cooling sections designed as circular tubes and distributed vertically in multiple stages. Combined with an external heating / insulation module and a supporting structure, it forms a complete cooling system. Second, the system adopts a multi-stage feeding structure, divided into two parts. One part is located on the upper cooling structure, and the other part is designed separately to form a buffer surface to weaken the disturbance effect of the outflow fluctuation on the top stirring liquid surface.

[0029] The aforementioned vertically distributed platinum channel cooling and feeding system can meet the needs of emergency unloading, partial cold repair, and cold repair by replacing heat dissipation capacity. It can match new structures and methods to meet the functional requirements of the three actual production processes. It can achieve single or multiple functions through the independent or combined use of each part, effectively improving the diversity of production efficiency requirements. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the vertically distributed platinum channel cooling and feeding system of the present invention.

[0031] Figure 2 This is a schematic diagram of the combined system structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the secondary feeding system of the present invention.

[0033] Wherein: 1-Agitator; 2-Agitator tank 2; 3-Agitator insulation structure; 4-Combined system; 4-1-Cooling interface; 4-2-Cooling transition pipe; 4-3-Cooling main section; 4-4-Primary feeding pipe; 4-5-Primary feeding outlet; 4-6-Combined system peripheral heating / insulation module; 4-7-Combined system support structure; 4-8-Combined system temperature monitoring structure; 5-Secondary feeding system; 5-1-Secondary feeding inlet; 5-2-Secondary feeding pipe; 5-3-Secondary feeding system peripheral heating / insulation module; 5-4-Secondary feeding system support structure; 5-5-Secondary system temperature monitoring structure. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] The present invention will now be described in further detail with reference to the accompanying drawings:

[0037] See Figure 1 , Figure 2 as well as Figure 3 This invention provides a vertically distributed platinum channel cooling and feeding system, which mainly includes a circular cooling structure and a multi-stage feeding structure. The multi-stage feeding structure includes a first-stage feeding structure and a second-stage feeding structure. The first-stage feeding structure is mounted on the cooling structure, and the two together form a combined system 4. The second-stage feeding structure forms a second-stage feeding system 5. Both the combined system 4 and the second-stage feeding system 5 are externally equipped with heating / insulation modules and supporting structures. Several temperature monitoring structures are equidistantly arranged on the combined system 4 and the second-stage feeding system 5. The second-stage feeding system 5 is located below the combined system 4.

[0038] like Figure 1 As shown, a vertically distributed platinum channel cooling and feeding system also includes a stirring system consisting of a stirrer 1, a stirring tank 2, and a stirring insulation structure 3. The stirring system is an inherent structure of traditional platinum channels and is a mature stirring system structure, which will not be described in detail here. The present invention is a vertically distributed platinum channel cooling and feeding system that is built below and connected to the entire stirring system.

[0039] like Figure 2 As shown, the combined system 4 of the vertically distributed platinum channel cooling and feeding system of the present invention includes a cooling transition pipe 4-2, a cooling main section 4-3, a primary feeding pipe 4-4, a cooling interface 4-1 at the top of the cooling transition pipe 4-2, a primary feeding outlet 4-5 at the bottom of the primary feeding pipe 4-4, a combined system peripheral heating / insulation module 4-6, a combined system support structure 4-7, and a combined system temperature monitoring structure 4-8. The combined system 4 is mainly divided into two parts in terms of overall function: a cooling part and a primary feeding adjustment part.

[0040] The diameter and length of each segment in the above-mentioned combined system 4 are based on the flow rate range of 917 kg / h to 1083 kg / h commonly used in current substrate manufacturing, and the height of the liquid surface is based on the height difference of 150 mm between the top of the stirring liquid surface and the upper end of the stirring surface. The system is designed using the pipeline pressure loss formula, taking into account the characteristics of the glass viscosity-temperature curve and process requirements. Based on this system, detailed structural dimensions can also be designed to match different flow rate requirements. The system layout and structural rules remain consistent with the core content described in this invention.

[0041] The combined system 4 is connected to the upper mixing system by flange connection. The flange connection does not require bolt connection, only the upper and lower flange faces need to contact. The actual connection gap is required to be 0.5mm to 1.0mm. The flange is a circular structure with a width of 30mm and a thickness of 1.5mm. The material selected is PtRh20 with good strength. The mixing flange is welded to the bottom of the mixing outlet, and the cooling inlet flange is welded to the cooling interface 4-1 and kept flush with its end.

[0042] The cooling transition pipe 4-2 in the combined system 4 is the connecting pipe that supports the stirring and cooling main section 4-3. The glass temperature in this area is required to be around 1400℃. At this temperature, due to the low viscosity of the glass, the pipe diameter and length have little impact on the pressure loss. Therefore, the pipe diameter is 300mm, the length is 500mm, the wall thickness is 1.2mm, and the material selected is PtRh10. The cooling main section 4-3 in the combined system 4 is the main area for cooling and heat dissipation. It needs to uniformly reduce the stirring temperature from above 1400℃ to around 1200℃. Therefore, the length and diameter of this area first meet the requirement of a stirring liquid level height difference of 150mm in the system pressure loss design mentioned above. After calculation, the pipe diameter of this circular pipe is designed to be 250mm and the length is designed to be 3000mm. Then, combined with the system heat dissipation and insulation principle, the thickness of the external refractory material is checked, and the system dimensions of this area are determined. More importantly, since the cooling main section 4-3 adopts a circular vertically distributed pipe body, the problems of body collapse and uneven heat dissipation in all directions that exist in the horizontal distribution of traditional cooling pipes are eliminated.

[0043] The primary feed pipe 4-4 in the combined system 4 performs preliminary flow regulation for the glass melt with the viscosity and temperature meeting the standard. Based on the system pressure loss design, the pipe diameter is 135mm, the length is designed to be 1000mm, the wall thickness is 1.2mm, and the material selected is PtRh10.

[0044] The aforementioned flow regulation, under the premise of fixed structural design of the equipment, mainly controls the change of flow rate by adjusting the temperature.

[0045] Since the primary feed outlet 4-5 in the combined system 4 needs to be inserted into the secondary feed system 5 below, a 300mm non-resin-coated area is designed at its end to allow it to be inserted into the molten glass and maintain the purity of the molten glass.

[0046] The peripheral heating / insulation module 4-6 in the combined system 4 is designed to match the diameter of the platinum tube, with a 15mm gap between the inner diameter and one side of the tube. This gap is used to fill powder or slurry, primarily to improve the density of the platinum surface and inhibit its oxidation and volatilization. The thickness is related to the heat dissipation and insulation process mentioned above, and is currently designed to be 70mm. The peripheral heating / insulation module 4-6 can be configured with different groups depending on the length of the heating tube, and the length of each group can also be designed differently for multi-level control. Based on the current cooling tube dimensions, it is designed with 20 groups. The peripheral heating / insulation module 4-6 is made of alumina, possessing strength and a certain degree of heat dissipation. The main purpose of arranging the heating modules in the heat dissipation functional area is to achieve bidirectional temperature control and controllable cooling and flow rate adjustment.

[0047] The combined system support structure 4-7 in the combined system 4 mainly combines the platinum tube body and the external heater structure, namely the combined system peripheral heating / insulation module 4-6, to fix and limit it, so as to prevent it from shaking and displacement during heating or production.

[0048] The combined system temperature monitoring structure 4-8 in combined system 4 has multiple welded thermocouples evenly distributed on the platinum tube body to monitor the temperature of the glass melt at different locations and provide feedback for the adjustment of the heat of the external heater.

[0049] like Figure 3 As shown, the secondary feeding system 5 of the vertically distributed platinum channel cooling and feeding system of the present invention includes a secondary feeding pipe 5-2, a secondary feeding inlet 5-1 disposed at the top of the secondary feeding pipe 5-2, a heating / insulation module 5-3 on the periphery of the secondary feeding system, a supporting structure 5-4 for the secondary feeding system, and a temperature monitoring structure 5-5 for the secondary system.

[0050] The secondary feeding system 5 is connected to the upper combined system 4 via an insertion method to establish a small-scale equilibrium liquid level, thus mitigating the impact of lower discharge flow fluctuations on the liquid level of the upper mixing system. The secondary feeding inlet 5-1 and the primary feeding outlet 4-5 are connected to the secondary feeding inlet 5-1. To achieve the aforementioned equilibrium liquid level, the pipe diameter is designed to be larger than the diameter of the primary feeding outlet 4-5, specifically 310mm, to create sufficient free liquid surface. Its length is 200mm, providing ample insertion space for the primary feeding outlet 4-5. The wall thickness is 1.2mm, and the material used is PtRh10.

[0051] The secondary feeding pipe 5-2 in the secondary feeding system 5, after further pressure loss design, has a final pipe diameter of 122mm, a length of 1.5mm, a wall thickness of 1.2mm, and is made of PtRh10 material. The secondary feeding pipe 5-2 is designed to extend 400mm beyond the heating / insulation module 5-3 of the secondary feeding system for docking and insertion with the pipe body in the forming process.

[0052] The heating / insulation module 5-3, the supporting structure 5-4, and the temperature monitoring structure 5-5 of the secondary feeding system 5 have the same function and design principle as the combined system 4 mentioned above, and will not be further explained here.

[0053] Specifically, the inner diameter of the outer heating / insulation module is 15mm away from the single-sided gap between the tube body of the combined system 4 and the secondary feeding system 5. The supporting structure includes an outer wrapping part and a segmented bottom support part; the outer wrapping part is located in the straight section of the cooling transition pipe 4-2, the main cooling section 4-3, the primary feeding pipe 4-4, and the secondary feeding pipe 5-2; the segmented bottom support part is located at the interconnection parts of the cooling transition pipe 4-2, the main cooling section 4-3, the primary feeding pipe 4-4, and the secondary feeding pipe 5-2. Several temperature monitoring structures are equidistantly arranged on the combined system 4 and the secondary feeding system 5.

[0054] The main material of the support structure is SUS304 stainless steel. In terms of structural function, it is mainly divided into two parts. One part is the outer wrapping and fixing part, which prevents the refractory material from tilting outward. Its thickness is generally designed to be 3mm. The other part is the segmented bottom support part, which prevents the refractory material from being damaged locally due to the downward pressure of its own weight. Its thickness is generally designed to be 10mm.

[0055] The present invention provides a vertically distributed platinum channel cooling and feeding system, which mainly addresses the problems of equipment reliability, heat dissipation uniformity, and process control that exist in the traditional horizontal distribution of platinum channels. By redesigning the platinum channel layout, the system integrates stirring, cooling, feeding, and unloading, effectively improving the level of equipment operation and production control.

[0056] The above system can be used in various ways, including emergency unloading, local cold repair, and heat dissipation capacity replacement cold repair. It can achieve a single function independently or multiple functions in combination, effectively improving the diversity of production efficiency requirements.

[0057] Based on the above system, the present invention also provides a method for using a vertically distributed platinum channel cooling and feeding system, including the following steps:

[0058] The front section of the platinum channel cooling and feeding system stops feeding, and the rear section of the platinum channel cooling and feeding system is pulled out. After being pulled out, the outlet of the secondary feeding pipe 5-2, which has been separated and is flowing out of the glass melt, is cooled to slow down the flow rate of the glass melt flowing through the cooling transition pipe 4-2, the cooling main section 4-3, and the primary feeding pipe 4-4.

[0059] Once the cross-sectional area of ​​the molten glass is reduced to 30mm, a receiving trough is placed below the forming device in advance. The forming device is then moved to one side, the cooling air is removed, and the power of the external heating / insulation module is increased. The outlet flow rate of the secondary feeding pipe 5-2 is also increased to drain the molten glass in the rear area and complete the emergency unloading.

[0060] It also includes a local cold repair step, which is as follows:

[0061] After emergency unloading is completed, the target section is horizontally withdrawn through the external support structure of combined system 4 and secondary feeding system 5 to complete local cold repair.

[0062] It also includes a replacement cold repair step, the replacement step being as follows:

[0063] After emergency unloading is completed, the cooling transition pipe 4-2 and the cooling main section 4-3 in the combined system 4 are removed and replaced while the pipe is empty. Then, feeding is resumed to re-establish the liquid level and complete the replacement cold repair.

[0064] More specifically, the aforementioned emergency unloading method When production faces serious defects and process disorder in the back-end system, emergency unloading and liquid level reconstruction are required. This structure is simple to operate. First, the front-end feeding is stopped, and the forming platinum tube is pulled out at the rear end. After pulling it out, cooling air is used to cool the outlet of the secondary feed tube 5-2, which is detached from the upper part and is flowing out of molten glass, so that the flow rate of molten glass is slowed down. However, after the cross-sectional area of ​​molten glass is reduced to 30mm, a receiving trough is placed under the forming process in advance, the forming furnace is moved to one side, the cooling air is removed, and the power of the heating module is increased to increase the outlet flow rate. According to the diameter of the secondary feed tube, the molten glass in the back-end will be completely drained within 2 hours, which is several times faster than the original structure.

[0065] The above-mentioned local cold repair method can replace the cooling and primary or secondary feeding system based on the damage and abnormalities after long-term operation in the rear area. The premise is the same as above: first, unload the material in the rear area, and then remove the corresponding replacement section horizontally. This can be achieved on the outer support structure. It is different from the traditional channel structure in terms of space advantage, that is, the space security mechanism distributed vertically on both sides is sufficient.

[0066] The above-mentioned heat dissipation capacity replacement method is currently known to be limited to heat dissipation capacity within a certain range. Traditional process methods can only increase the output volume to a certain extent within a certain range. However, when facing new and larger flow demand, the cost of rebuilding the production line will increase sharply. Therefore, within the range of flow increase of 100kg / h to 130kg / h, the structure of the cooling section can be replaced only. The specific method is as described above. First, unload the material, design different specifications of platinum cooling pipe system in advance according to the flow demand, remove and replace the area in the empty pipe state, and then gradually restore the material feeding to rebuild the liquid level.

[0067] The system developed in this invention for cooling and feeding platinum channels will play an important role in the subsequent manufacturing of substrate glass with larger flow rates, and also provides key support in terms of production costs and project construction costs.

[0068] Example

[0069] This embodiment provides a vertically distributed platinum channel cooling and feeding system, including a stirring system consisting of a stirrer 1, a stirring tank 2, and a stirring insulation structure 3; a combined system 4; and a secondary feeding system 5. The combined system 4 includes eight parts arranged vertically from top to bottom: a cooling transition pipe 4-2, a cooling main section 4-3, a primary feeding pipe 4-4, a cooling interface 4-1 at the top of the cooling transition pipe 4-2, a primary feeding outlet 4-5 at the bottom of the primary feeding pipe 4-4, a combined system peripheral heating / insulation module 4-6, a combined system support structure 4-7, and a combined system temperature monitoring structure 4-8. The secondary feeding system 5 includes five parts: a secondary feeding pipe 5-2, a secondary feeding inlet 5-1 at the top of the secondary feeding pipe 5-2, a secondary feeding system peripheral heating / insulation module 5-3, a secondary feeding system support structure 5-4, and a secondary system temperature monitoring structure 5-5.

[0070] This embodiment provides a vertically distributed platinum channel cooling and feeding system, which consists of a stirring system, a combined system 4, and a secondary feeding system 5 from top to bottom. The combined system 4 and the secondary feeding system 5 are respectively equipped with a combined system peripheral heating / insulation module 4-6, a combined system support structure 4-7, a secondary feeding system peripheral heating / insulation module 5-3, and a secondary feeding system support structure 5-4. The combined system temperature monitoring structure 4-8 and the secondary system temperature monitoring structure 5-5 are respectively installed on them.

[0071] The combined system 4 is connected to the upper mixing system via flanges. No bolts are required for the flange connections, and the gap between flanges should be 0.5mm to 1.0mm. The flanges are annular in shape, with a width of 30mm to 50mm and a thickness of 1.5mm. The cooling transition pipe 4-2 has a diameter of 300mm, a length of 500mm, and a wall thickness of 1.2mm. The main cooling section 4-3 is a circular pipe with a diameter of 250mm and a length of 3000mm. The primary feed pipe 4-4 has a diameter of 135mm, a designed length of 1000mm, and a wall thickness of 1.2mm. The primary feed outlet 4-5 has a 300mm un-refractory material-covered area at its end. The secondary feed inlet 5-1 has a diameter larger than the primary feed outlet 4-5. The secondary feeding inlet 5-1 has a pipe diameter of 310mm, a length of 200mm, and a wall thickness of 1.2mm; the secondary feeding pipe 5-2 has a pipe diameter of 122mm, a length of 1.5mm, and a wall thickness of 1.2mm. The secondary feeding pipe 5-2 is designed to extend 400mm beyond the heating / insulation module 5-3 of the secondary feeding system.

[0072] The material of cooling interface 4-1 is PtRh20, the material of cooling transition pipe 4-2, primary feed pipe 4-4 and secondary feed pipe 5-2 is PtRh10, and the material of primary feed outlet 4-5 and secondary feed inlet 5-1 is PtRh10.

[0073] The inner diameter of the peripheral heating / insulation module 4-6 of the combined system and the peripheral heating / insulation module 5-3 of the secondary feeding system have a single-sided gap of 15mm and a thickness of 70mm from the tube body, and the material is preferably alumina. There are 20 sets of peripheral heating / insulation modules 4-6. The peripheral heating / insulation modules and the supporting structure are circular heaters and insulation bricks. The material of the supporting structure 4-7 of the combined system and the supporting structure 5-4 of the secondary feeding system is SUS304 stainless steel. The structure has two parts: one part is the outer wrapping fixation, which is 3mm thick, and the other part is the segmented bottom support, which is 10mm thick. The temperature monitoring structure 4-8 of the combined system and the temperature monitoring structure 5-5 of the secondary system consist of multiple welded thermocouples evenly distributed on the platinum tube body.

[0074] The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solution based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A vertically distributed platinum channel cooling and feeding system, characterized in that, Includes a combined system (4), a secondary feeding system (5), an external heating / insulation module, and a supporting structure; The secondary feeding system (5) is located below the combined system (4); the peripheral heating / insulation module and the supporting structure are located outside the combined system (4) and the secondary feeding system (5); The combined system (4) includes a circular cooling transition pipe (4-2), a cooling main section (4-3), a primary feeding pipe (4-4), and a primary feeding outlet (4-5) located at the bottom of the primary feeding pipe (4-4) arranged vertically from top to bottom. The secondary feeding system (5) includes a secondary feeding pipe (5-2) and a secondary feeding inlet (5-1) located at the top of the secondary feeding pipe (5-2). The primary feeding outlet (4-5) is connected to the secondary feeding inlet (5-1).

2. The vertically distributed platinum channel cooling and feeding system according to claim 1, characterized in that, The single-sided gap of the tube body of the outer heating / insulation module inner diameter distance combination system (4) and the secondary feeding system (5) is 15mm.

3. The vertically distributed platinum channel cooling and feeding system according to claim 1, characterized in that, The supporting structure includes an outer wrapping part and a segmented bottom support part; The outer wrapping part is located in the straight section of the cooling transition pipe (4-2), the main cooling section (4-3), the primary feeding pipe (4-4), and the secondary feeding pipe (5-2); The segmented bottom support is located at the connection between the cooling transition pipe (4-2), the main cooling section (4-3), the primary feeding pipe (4-4), and the secondary feeding pipe (5-2).

4. The vertically distributed platinum channel cooling and feeding system according to claim 1, characterized in that, Several temperature monitoring structures are equidistantly arranged on the combined system (4) and the secondary feeding system (5).

5. The vertically distributed platinum channel cooling and feeding system according to claim 1, characterized in that, The top end of the cooling transition pipe (4-2) is provided with a cooling interface (4-1); a docking flange is fixedly connected to the cooling interface (4-1).

6. The vertically distributed platinum channel cooling and feeding system according to claim 1, characterized in that, The lower end of the primary feed outlet (4-5) is provided with a part without refractory material wrapping.

7. The vertically distributed platinum channel cooling and feeding system according to claim 1, characterized in that, The diameter of the secondary feeding inlet (5-1) is larger than the diameter of the primary feeding outlet (4-5); the combined system (4) and the secondary feeding system (5) are connected by insertion.

8. A method of using a vertically distributed platinum channel cooling and feeding system, characterized in that, The vertically distributed platinum channel cooling and feeding system as described in claim 1 includes the following steps: The front section of the platinum channel cooling and feeding system stops feeding, and the rear section of the platinum channel cooling and feeding system is pulled out. After being pulled out, the outlet of the secondary feeding pipe (5-2) that has been separated and is flowing out of the glass melt is cooled, so that the flow rate of the glass melt flowing through the cooling transition pipe (4-2), the cooling main section (4-3), and the primary feeding pipe (4-4) is slowed down. Once the cross-sectional area of ​​the molten glass is reduced to 30mm, a receiving trough is placed below the forming device in advance. The forming device is then moved to one side, the cooling air is removed, and the power of the external heating / insulation module is increased. The outlet flow rate of the secondary feeding pipe (5-2) is increased to drain the molten glass in the rear area and complete the emergency unloading.

9. The method of using the vertically distributed platinum channel cooling and feeding system according to claim 8, characterized in that, It also includes a local cold repair step, which is as follows: After emergency unloading is completed, the target section is horizontally withdrawn through the external support structure of the combined system (4) and the secondary feeding system (5) to complete the local cold repair.

10. The method of using the vertically distributed platinum channel cooling and feeding system according to claim 8, characterized in that, It also includes a replacement cold repair step, which is as follows: After completing the emergency unloading, the cooling transition pipe (4-2) and cooling main section (4-3) in the combined system (4) are removed and replaced in the empty pipe state, and then feeding is resumed to re-establish the liquid level and complete the replacement cold repair.

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