A spiral cooling and heat dissipation structure and cooling method for substrate glass production

Abstract

This application discloses a spiral cooling structure and method for substrate glass production, belonging to the field of special glass manufacturing equipment technology. The cooling structure includes a vertical stirring tube, a spiral cooling tube, and a vertical discharge tube connected in sequence. The spiral cooling tube is made of platinum alloy material, and its overall orientation is a spatial spiral rising along a vertical axis, with a defined spiral diameter and pitch, and its cross-section is flat. This invention reconstructs the cooling tube into a spatial spiral shape, compressing the linear cooling process to a limited vertical height, significantly reducing the longitudinal space occupied in the factory. Simultaneously, it utilizes the self-supporting characteristics of the spiral to suppress the risk of high-temperature collapse, significantly improving the structural safety and operational reliability of the equipment.

Description

Technical Field

[0001] This application belongs to the field of special glass manufacturing equipment technology, specifically relating to a spiral cooling and heat dissipation structure and cooling method for substrate glass production. Background Technology

[0002] The global display industry is undergoing a transformation driven by cutting-edge technologies such as ultra-high definition and flexible folding, placing extremely high demands on the performance of substrate glass and simultaneously propelling production capacity towards larger scales. Increasing single-line throughput and reducing unit energy consumption and costs are key to enhancing companies' international competitiveness. The platinum channel, as a core component connecting the glass melting furnace and forming equipment, is responsible for the clarification, homogenization, temperature control, and transportation of molten glass; its processing capacity determines the upper limit of the production line's capacity. Currently, the mainstream equipment in the industry has a daily throughput of 20-40 tons; increasing this to 60 tons and above has become a crucial challenge that must be overcome in upgrading substrate glass production lines.

[0003] The cooling and heat dissipation section is a key functional section of the platinum channel. Its core task is to smoothly reduce the high-temperature clarified and homogenized molten glass to the required forming temperature according to a precise cooling curve, ensuring sufficient residence time for the molten glass to complete heat exchange. When the extraction rate increases significantly, in order to maintain the same cooling rate and residence time, the effective heat exchange length of the cooling tube needs to be increased. In traditional designs, the geometric dimensions of the cooling section will increase linearly with the increase in extraction rate.

[0004] Simply increasing the straight length of cooling pipes presents numerous engineering challenges. It not only lengthens the factory span and increases civil engineering costs, but also raises the difficulty of manufacturing and installing ultra-long platinum pipe fittings, while exacerbating the safety risk of pipe creep and collapse under high-temperature conditions. Existing local reinforcement measures cannot fundamentally solve the problem. Therefore, breaking through traditional straight-line design thinking and reconstructing the spatial topology of the cooling section to achieve a compact layout and improved safety performance has become a major technical challenge urgently needing breakthroughs in this field. Summary of the Invention

[0005] This application aims to overcome the shortcomings of the prior art and provide a spiral cooling and heat dissipation structure and cooling method for substrate glass production. By reconstructing the cooling pipe into a spatial spiral shape, a three-dimensional layout of the cooling path is achieved, thereby significantly reducing the space occupation while ensuring the effective heat exchange length, and using the self-supporting characteristics of the spiral to suppress the risk of high-temperature collapse.

[0006] To achieve the above objectives, this application adopts the following technical solution: In a first aspect, this application provides a spiral cooling and heat dissipation structure for substrate glass production, comprising: a vertical stirring tube, the outlet end of which is connected to the inlet end of a spiral cooling and heat dissipation tube, the overall orientation of which is a spatial spiral shape spiraling upward along a vertical axis; the spiral cooling and heat dissipation tube has a defined spiral diameter and spiral pitch, and the cross-section of which is a flat structure. The inlet end of the vertical discharge pipe is connected to the outlet end of the spiral cooling and heat dissipation pipe.

[0007] Furthermore, the spiral height of the spiral cooling pipe and the total length of the required cooling flow satisfy: H ≈ L × (Ls / (πD)) Where Ls is the length of the linear cooling process, D is the spiral diameter, L is the spiral pitch, and H is the spiral height.

[0008] Furthermore, the spiral diameter D is 1500-3000mm, and the spiral pitch L is 300-800mm.

[0009] Furthermore, the flat structure has an elliptical cross-section or a racetrack-shaped cross-section, the cross-sectional width of the spiral cooling pipe is 600-800mm, and the cross-sectional height of the spiral cooling pipe is 100-300mm.

[0010] Furthermore, the liquid level of the molten glass in the vertical stirring tube is 100-300mm above the top of the vertical stirring tube; the liquid level of the molten glass in the vertical discharge tube is 100-300mm above the top of the vertical discharge tube.

[0011] Furthermore, the spiral cooling heat dissipation pipe is assembled and welded from multiple pipe segment units that are segmented along a spiral path, and the central angle corresponding to each pipe segment unit is 30°-60°.

[0012] Furthermore, it also includes a modular support structure, which is composed of multiple refractory modules arranged in layers along the spiral direction, and each refractory module is provided with a receiving cavity that matches the local shape of the spiral cooling heat dissipation pipe.

[0013] Furthermore, a 2-5mm expansion gap is left between the receiving cavity and the tube body of the spiral cooling heat dissipation pipe, and the expansion gap is filled with ceramic fiber blanket; the outside of the modular support structure is successively covered with a heat insulation layer and a sealing steel plate, and the heat insulation layer includes an inner high-alumina fiber blanket and an outer microporous nano heat insulation board.

[0014] Secondly, this application provides a cooling method based on a spiral cooling and heat dissipation structure for substrate glass production, comprising the following steps: Connect the inlet end of the spiral cooling and heat dissipation pipe to the outlet end of the vertical stirring pipe, and connect the outlet end of the spiral cooling and heat dissipation pipe to the inlet end of the vertical discharge pipe. The molten glass flows sequentially through the vertical stirring tube, the spiral cooling and heat dissipation tube, and the vertical discharge tube. The liquid glass levels in the vertical stirring tube and the vertical discharge tube are controlled to maintain a safe height between the liquid glass level in the vertical stirring tube and the top of the vertical discharge tube.

[0015] Furthermore, the safety height is 100-300mm.

[0016] Compared with the prior art, this application has the following beneficial effects: This application provides a spiral cooling structure for substrate glass production. By reconstructing the cooling pipe into a spatial spiral shape that spirals upwards along the vertical axis, it fundamentally breaks through the traditional technical path where the straight length of the cooling section must be linearly extended due to the increase in heat output. In traditional designs, to meet the heat exchange process required by ultra-large heat output, the straight length of the cooling pipe needs to be extended to ten meters or even longer, resulting in a sharp increase in the longitudinal span of the factory building, a significant increase in civil engineering investment costs, and the long-span flat pipe is prone to creep and collapse at the top under high-temperature conditions, posing a serious safety risk. This application uses a spiral cooling pipe to replace the long straight pipe, "spatially folding" the cooling path that originally extended in the horizontal direction in the vertical direction, greatly reducing the longitudinal space required for the same cooling process length to within a limited vertical height.

[0017] Furthermore, the spiral diameter D is limited to 1500-3000mm and the spiral pitch L to 300-800mm, and a conversion relationship between the spiral height H and the cooling flow length Ls is established, enabling designers to flexibly select the optimal combination of spiral parameters based on specific production capacity requirements and plant space conditions. By limiting the cross-section of the spiral tube to an elliptical or racetrack-shaped flat structure with a width of 600-800mm and a height of 100-300mm, the path is extended while maintaining the same heat dissipation surface area as traditional straight tubes. Simultaneously, it allows the molten glass to form a shallow flow within the tube, which is beneficial for uniform internal temperature distribution. Controlling the distance between the molten glass surface and the top of the vertical stirring tube and vertical discharge tube within a safe height range of 100-300mm effectively prevents overflow or siphon accidents during process fluctuations, pressure adjustments, or temperature changes, ensuring long-term stable system operation.

[0018] Furthermore, a segmented forming process is employed to divide the spiral pipe into multiple pipe segment units with central angles of 30°-60°, which are then pressed and welded together. This transforms the overall forming of the complex spatial curve into the precision machining and assembly of several simple units. The deviation of the cross-sectional dimensions can be controlled within ±2mm, and the deviation of the spiral trajectory can be controlled within ±5mm. This solves the manufacturing problem of ultra-long spiral irregular pipe fittings, and the segmented units facilitate transportation and on-site assembly. The matching modular support structure uses contoured refractory modules, with a 2-5mm expansion gap between the cavity and the pipe body, filled with ceramic fiber blankets, which can absorb thermal expansion and provide flexible support. The outer side is successively covered with high-alumina fiber blankets, microporous nano-insulation boards, and sealing steel plates, forming a highly efficient thermal insulation and sealing system that minimizes heat loss, ensures precise temperature control during the cooling process, and reduces installation difficulty and maintenance costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a spiral cooling and heat dissipation structure for substrate glass production according to this application.

[0021] Figure 2 This is a three-dimensional structural diagram of the spiral cooling heat dissipation pipe of this application.

[0022] Figure 3 This is a schematic diagram of the spiral diameter and spiral pitch parameters of the spiral cooling heat dissipation pipe of this application.

[0023] Explanation of reference numerals in the attached figures 1. Vertical stirring pipe; 2. Spiral cooling and heat dissipation pipe; 2-1. First pipe section unit; 2-2. Second pipe section unit; 3. Vertical discharge pipe. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] like Figure 1As shown, this application provides a spiral cooling and heat dissipation structure for substrate glass production, including a vertical stirring tube 1, a spiral cooling and heat dissipation tube 2, and a vertical discharge tube 3.

[0026] A vertical stirring tube 1 is located at the inlet end of the entire cooling and heat dissipation structure. The vertical stirring tube 1 is a vertically positioned, cylindrical, hollow tube, integrally cast from a platinum-rhodium alloy. The top of the vertical stirring tube 1 is open, used to connect to the upstream clarification and homogenization section equipment. The bottom of the vertical stirring tube 1 is closed. An outlet end is located near the bottom of the lower part of the tube wall of the vertical stirring tube 1, used to discharge the molten glass. An agitator is installed inside the vertical stirring tube 1, positioned along its axis and driven by an external motor to mechanically stir the molten glass inside, achieving homogenization of its composition and temperature.

[0027] The outlet end of the vertical stirring tube 1 is connected to the inlet end of the spiral cooling tube 2. Specifically, a short pipe fitting extending outward is provided at the outlet end of the vertical stirring tube 1, the outer diameter of which matches the inner diameter of the inlet end of the spiral cooling tube 2. During assembly, the inlet end of the spiral cooling tube 2 is fitted over the short pipe fitting of the vertical stirring tube 1, forming a nested fit. Subsequently, an argon arc welding process is used to perform all-position sealing welding along the circumference of the joint, forming a continuous and dense annular weld. This connection method ensures that the connection between the vertical stirring tube 1 and the spiral cooling tube 2 has sufficient mechanical strength and sealing performance.

[0028] The spiral cooling radiator 2 is made of platinum-based alloy. The overall orientation of the spiral cooling radiator 2 is a spatial spiral shape that spirals upwards along a vertical axis. Specifically, projecting the centerline of the spiral tube onto a horizontal plane forms a circular trajectory; viewed vertically, the spiral tube exhibits a uniform upward spiral trend from bottom to top. The purpose of this spatial spiral shape is to "fold" the cooling path, which would normally extend in a straight line horizontally, vertically, thereby significantly reducing the projected size of the equipment along the length of the plant while maintaining the same cooling flow length.

[0029] In a more specific embodiment provided in this application, the spiral cooling pipe 2 has a defined spiral diameter and spiral pitch. The spiral diameter is the diameter of the cylindrical surface containing the centerline of the spiral pipe, i.e., the diameter of the horizontally projected circle of the spiral pipe. The spiral pitch is the vertical distance between corresponding points of two adjacent turns of the spiral pipe. By adjusting the spiral diameter and spiral pitch, the required linear cooling flow length can be converted into a compact spiral height. The purpose of this parameter design is to enable designers to flexibly select the optimal combination of spiral parameters according to specific production capacity requirements and plant space conditions, minimizing space occupation while ensuring the cooling flow length.

[0030] The inlet end of the vertical discharge pipe 3 is connected to the outlet end of the spiral cooling pipe 2. The vertical discharge pipe 3 is located at the outlet end of the entire cooling structure. The vertical discharge pipe 3 is a vertically arranged cylindrical hollow tube, integrally cast from platinum-rhodium alloy. The top of the vertical discharge pipe 3 is a closed end, and its inlet end is located at the upper part of the pipe wall. The bottom of the vertical discharge pipe 3 is an open end, used to discharge the cooled molten glass to the downstream forming equipment. The connection method between the outlet end of the spiral cooling pipe 2 and the inlet end of the vertical discharge pipe 3 is the same as described above: the outlet end of the spiral cooling pipe 2 is sleeved on the outside of the short pipe joint extending outward from the inlet end of the vertical discharge pipe 3, forming a nested fit, and then argon arc welding is used for all-position sealing welding.

[0031] Through the aforementioned three-section connection structure, the vertical stirring tube 1, the spiral cooling and heat dissipation tube 2, and the vertical discharge tube 3 together form a closed, continuous, and leak-free glass liquid flow channel. The glass liquid flows sequentially from upstream through the vertical stirring tube 1, the spiral cooling and heat dissipation tube 2, and the vertical discharge tube 3, completing the heat exchange and cooling process within the spiral cooling and heat dissipation tube 2.

[0032] This application achieves "spatial folding" of the cooling path by reconstructing the traditional straight-line cooling pipe into a spiral shape that ascends along the vertical axis. The cooling process, which originally required several meters or even more than ten meters of straight length, can be completed within a limited vertical height, significantly reducing the layout space along the length of the plant and lowering civil engineering investment costs. Simultaneously, the spiral shape transforms the self-weight load of the pipe and the internal molten glass from a single downward bending moment into circumferential stress distributed along the spiral path, fundamentally suppressing the risk of high-temperature collapse and significantly improving the structural safety and operational reliability of the equipment.

[0033] In a more specific embodiment provided in this application, such as Figure 3 As shown, the spiral cooling tube 2 has a defined spiral diameter D and spiral pitch L. The spiral height H of the spiral cooling tube 2 and the required linear cooling flow length Ls satisfy the following conversion relationship: H ≈ L × (Ls / (πD)). Wherein, Ls is the required linear cooling flow length in mm, determined by the target extraction amount and the cooling curve requirements of the molten glass; D is the spiral diameter in mm, which determines the horizontal projection range of the spiral structure; L is the spiral pitch in mm, which determines the tightness of the spiral structure; H is the spiral height in mm, i.e., the vertical space occupied by the spiral structure; π is pi, taken as 3.1416. The derivation logic of this formula is as follows: the unfolded length of each turn of the spiral tube is approximately equal to the circumference πD with the spiral diameter D as the diameter. Therefore, the total number of turns n required to achieve the linear cooling flow length Ls is n ≈ Ls / (πD); multiplying the number of turns n by the spiral pitch L gives the vertical height H occupied by the spiral tube.

[0034] Preferably, the spiral diameter D is 1500-3000mm, and the spiral pitch L is 300-800mm. Within this parameter range, the traditional 6-8 meter linear cooling process can be compressed to a vertical height of 2-4 meters. For example, when Ls=10000mm, D=2000mm, and L=500mm, n≈10000 / (3.14×2000)≈1.59 turns, H≈500×1.59=795mm, meaning that a cooling process that originally required a 10-meter linear length can be achieved with a vertical height of less than 0.8 meters using this structure. If the vertical space of the factory is relatively large but the horizontal space is limited, a smaller helical diameter, such as D=1500mm, and a larger helical pitch, such as L=700mm, can be selected to make the helical shape more "slender and tall". Conversely, if the vertical space is limited but the horizontal space is large, a larger helical diameter, such as D=2800mm, and a smaller helical pitch, such as L=350mm, can be selected to make the helical shape more "short and wide". This flexibility in parameter design allows this application to adapt to the layout requirements of different factory conditions.

[0035] In a more specific embodiment provided in this application, the flat structure of the spiral cooling pipe 2 is either an elliptical cross-section or a racetrack-shaped cross-section. An elliptical cross-section refers to a closed cross-sectional shape enclosed by an elliptical curve, with the major axis of the ellipse pointing horizontally and the minor axis pointing vertically. A racetrack-shaped cross-section refers to a closed cross-sectional shape enclosed by two parallel straight line segments and two semicircular arcs connecting the ends of the two straight line segments. Regardless of the cross-sectional shape, the cross-sectional width of the spiral cooling pipe 2 is 600-800 mm, and the cross-sectional height is 100-300 mm. This size range is consistent with the cross-sectional dimensions of traditional straight-section cooling pipes. The purpose is to ensure that the heat dissipation surface area of ​​the spiral cooling pipe 2 is the same as that of the straight-section cooling pipe, thereby increasing the cooling flow length by changing the pipe's orientation without altering the heat exchange efficiency. The flat cross-section of the spiral cooling pipe 2 maintains directional consistency during its spiral ascent: the width direction of the cross-section always points radially towards the cylindrical surface where the centerline of the spiral pipe is located, and the height direction of the cross-section is always perpendicular to the tangent to the axis of the spiral pipe. The purpose of this directional design is to ensure that the wide side of the flat cross-section always faces outwards, increasing the heat dissipation surface area and its contact with the external space, thereby improving heat exchange efficiency.

[0036] In a more specific embodiment provided in this application, the liquid glass level in the vertical stirring tube 1 is 100-300 mm above the top of the vertical stirring tube 1. Similarly, the liquid glass level in the vertical discharge tube 3 is 100-300 mm above the top of the vertical discharge tube 3. The mechanism of this safety height is as follows: when the system experiences pressure fluctuations, temperature changes, or start-up / shutdown, the liquid glass level may rise or fall instantaneously. The 100-300 mm safety height provides a buffer space to prevent the liquid glass from overflowing from the tube opening or being sucked into the air. When determining the overall height of the spiral cooling pipe 2 and its interface positions with the upstream and downstream vertical pipes, the above safety height requirements must be considered. Specifically, the inlet height of the spiral cooling pipe 2 should match the outlet height of the vertical stirring tube 1, and the outlet height of the spiral cooling pipe 2 should match the inlet height of the vertical discharge tube 3. Through this system-level matching design, the liquid level safety of the entire channel is reliably guaranteed. If the safety height is less than 100mm, the safety margin is insufficient, and even minor pressure fluctuations can lead to overflow. If the safety height is greater than 300mm, it means the vertical pipe section is too long, increasing both the amount of platinum used and the structural height, resulting in unnecessary waste. Therefore, 100-300mm is the optimal safety range verified by long-term production practice.

[0037] In a more specific embodiment provided in this application, such as Figure 2 As shown, the spiral cooling and heat dissipation pipe 2 is assembled from multiple pipe segment units welded along a spiral path. The diagram illustrates two pipe segment units as an example, including the first pipe segment unit 2-1 and the second pipe segment unit 2-2. The first pipe segment unit 2-1 and the second pipe segment unit 2-2 are sequentially joined end-to-end along the spiral trajectory and fixed by argon arc welding to form a complete spiral cooling and heat dissipation pipe 2. The central angle corresponding to each pipe segment unit is 30°-60°. When the central angle corresponding to each pipe segment unit is 30°, a complete spiral pipe (360°) is divided into 12 pipe segment units; when the corresponding central angle is 45°, it is divided into 8 pipe segment units; and when the corresponding central angle is 60°, it is divided into 6 pipe segment units. The division principle is to minimize the number of units while ensuring that each pipe segment unit can be accurately formed by mold pressing, thereby reducing the risk of welding deformation and manufacturing costs.

[0038] In a more specific embodiment provided in this application, each pipe segment unit has the following characteristics: the pipe segment unit has a preset radius of curvature equal to half the helical diameter D, a preset torsion angle equal to the central angle corresponding to the unit, a flat cross-sectional shape, and dimensions of 600-800mm width and 100-300mm height that remain consistent throughout the entire length. Both ends of the pipe segment unit are beveled for subsequent welding connections. Each pipe segment unit is formed using a precision mold pressing process: after heating a platinum-rhodium alloy sheet to a certain temperature, it is placed in a mold with the corresponding curvature and torsion angle, and pressed by a press to precisely fit the sheet against the mold surface, forming the required pipe segment unit shape. The formed pipe segment units are transported to the installation site. A dedicated welding jig is set up on-site, and the jig is precisely machined with positioning grooves according to the designed helical line. Each pipe segment unit is placed sequentially in the positioning groove, ensuring that the spatial orientation of each unit, including position, direction, and tilt angle, is consistent with the designed helical trajectory. The butt welds between adjacent pipe segment units are welded using argon arc welding, with strict control of welding heat input to reduce thermal deformation.

[0039] In a more specific embodiment provided in this application, the cooling and heat dissipation structure further includes a modular support structure. The modular support structure consists of multiple refractory modules arranged in layers along a spiral direction. Each refractory module is prefabricated using high-purity alumina or zirconium oxide refractory material. Each refractory module is designed to conform to the spiral curvature of its location, and its interior has a receiving cavity that matches the local shape of the spiral cooling and heat dissipation pipe 2. A concave-convex positioning structure is used between adjacent refractory modules to achieve precise engagement; the gap between the tenon and the groove is controlled within 0.5mm to ensure that relative slippage does not occur between the modules. Multiple modules are sequentially built from bottom to top, and their receiving cavities are connected in series to form a complete and continuous spiral channel.

[0040] A 2-5mm expansion gap is maintained between the receiving cavity and the spiral cooling heat dissipation pipe 2, and this gap is filled with a ceramic fiber blanket. The purpose of the expansion gap is to absorb the dimensional changes caused by the thermal expansion of the pipe body and prevent excessive compressive stress between the pipe body and the supporting structure. The ceramic fiber blanket is made of high-alumina fiber needle-punched, which has good compression resilience. When the pipe body expands due to heat, it is compressed but still maintains a certain supporting force. When the pipe body cools and contracts, it rebounds and always fills the gap.

[0041] In a more specific embodiment provided in this application, the outer side of the modular support structure is sequentially covered with an insulation layer and a sealing steel plate. The insulation layer comprises an inner high-alumina fiber blanket and an outer microporous nano-insulation board. The high-alumina fiber blanket, with a thickness of 10-30 mm, is directly wrapped around the outer surface of the refractory module and has excellent thermal insulation performance, effectively preventing heat conduction outward. The microporous nano-insulation board, with a thickness of 20-50 mm, is wrapped around the outer side of the high-alumina fiber blanket. Its main components are fumed silica and a light-blocking agent, and its thermal conductivity is extremely low (≤0.025 W / (m·K), significantly reducing heat loss. The sealing steel plate, with a thickness of 2-5 mm, is wrapped around the outer side of the microporous nano-insulation board and is made of stainless steel. It is connected by welding or bolts to form a sealed metal shell, providing mechanical protection for the internal insulation material, preventing the insulation layer from getting damp or damaged, and simultaneously forming a sealed insulation space to suppress heat loss caused by air convection.

[0042] In another embodiment provided in this application, a cooling method for a spiral cooling and heat dissipation structure used in substrate glass production is also provided. For example... Figure 1 As shown, before performing the cooling operation, the components are first fixedly connected in the following order. The inlet end of the spiral cooling radiator 2 is fixedly connected to the outlet end of the vertical stirring pipe 1 by welding: the inlet end of the spiral cooling radiator 2 is fitted onto the outside of the short pipe joint at the outlet end of the vertical stirring pipe 1, forming a nested fit. Argon arc welding is used to perform all-position sealing welding along the circumference of the joint, forming a circumferential weld. After welding, X-ray inspection is used for non-destructive testing of the weld. The outlet end of the spiral cooling radiator 2 is fixedly connected to the inlet end of the vertical discharge pipe 3 by welding, in the same manner as before. Then, a modular support structure is constructed around the spiral cooling radiator 2: refractory modules are built layer by layer from bottom to top. Each layer is hoisted into place, and the corresponding spiral pipe segment unit is spliced ​​and welded on the assembly welding jig. Ceramic fiber blankets are inserted into the expansion gap between the receiving cavity and the pipe body. Finally, high-alumina fiber blankets, microporous nano-insulation boards, and sealing steel plates are sequentially wrapped around the outside of the support structure.

[0043] After the system is started, the high-temperature glass melt, which has undergone upstream clarification and homogenization treatment and has a temperature of approximately 1300-1500℃, enters the top inlet of the vertical stirring tube 1 through a pipe and flows vertically downward into the inner cavity of the vertical stirring tube 1. The stirrer inside the vertical stirring tube 1 is driven to rotate by an external motor, which mechanically stirs the glass melt to achieve homogenization of its composition and temperature.

[0044] After being stirred and homogenized, the molten glass enters the inlet of the spiral cooling and heat dissipation pipe 2 through the outlet end of the vertical stirring tube 1. The molten glass flows upward along the inner cavity of the spiral cooling and heat dissipation pipe 2 in a spiral trajectory. During this process, the molten glass dissipates heat to the external environment through the pipe wall, and the temperature of the molten glass inside the pipe gradually decreases according to a preset cooling curve, for example, from 1300℃ at the inlet to 1100℃ at the outlet. The spiral shape of the spiral cooling and heat dissipation pipe 2 makes the flow path length of the molten glass much greater than its vertical height, thus achieving sufficient heat dissipation residence time within a limited vertical space. Simultaneously, the flat cross-section allows the molten glass to form a shallow flow within the pipe, which is beneficial for the uniform distribution of internal temperature.

[0045] After being cooled, the molten glass enters the inlet of the vertical discharge pipe 3 through the outlet end of the spiral cooling heat dissipation pipe 2, flows vertically downward into the inner cavity of the vertical discharge pipe 3, and is finally discharged downstream to the forming equipment such as the overflow tank through the bottom outlet of the vertical discharge pipe 3.

[0046] During the flow of molten glass, the liquid levels in the vertical stirring tube 1 and the vertical discharge tube 3 are continuously monitored and controlled. The liquid level in the vertical stirring tube 1 is controlled by adjusting the upstream feed rate, maintaining a safe height of 100-300 mm from the top of the tube. Similarly, the liquid level in the vertical discharge tube 3 is controlled by adjusting the downstream discharge rate, maintaining a safe height of 100-300 mm from the top of the tube. During system operation, level sensors such as laser level gauges, ultrasonic level gauges, or electrical contact level gauges can be used to monitor the liquid level in real time. When the liquid level deviates from the set range, the opening of the upstream feed valve or the downstream discharge valve is adjusted to restore the liquid level to the safe range.

[0047] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0048] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0049] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0050] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A spiral cooling and heat dissipation structure for substrate glass production, characterized in that, include: A vertical stirring tube (1) is provided, the outlet end of which is connected to the inlet end of a spiral cooling and heat dissipation tube (2). The spiral cooling and heat dissipation tube (2) has an overall spiral shape that spirals upward along the vertical axis. The spiral cooling and heat dissipation tube (2) has a defined spiral diameter and spiral pitch, and the cross-section of the spiral cooling and heat dissipation tube (2) is a flat structure. The inlet end of the vertical discharge pipe (3) is connected to the outlet end of the spiral cooling heat dissipation pipe (2).

2. The spiral cooling and heat dissipation structure for substrate glass production according to claim 1, characterized in that, The spiral height of the spiral cooling pipe (2) and the total length of the required cooling flow satisfy the following: H ≈ L × (Ls / (πD)) Where Ls is the length of the linear cooling process, D is the spiral diameter, L is the spiral pitch, and H is the spiral height.

3. The spiral cooling and heat dissipation structure for substrate glass production according to claim 2, characterized in that, The diameter D of the helix is ​​1500-3000mm, and the pitch L of the helix is ​​300-800mm.

4. The spiral cooling and heat dissipation structure for substrate glass production according to claim 1, characterized in that, The flat structure has an elliptical cross section or a racetrack-shaped cross section. The cross-sectional width of the spiral cooling heat dissipation pipe (2) is 600-800mm, and the cross-sectional height of the spiral cooling heat dissipation pipe (2) is 100-300mm.

5. A spiral cooling and heat dissipation structure for substrate glass production according to claim 1, characterized in that, The glass liquid level in the vertical stirring tube (1) is 100-300mm above the top of the vertical stirring tube (1); the glass liquid level in the vertical discharge tube (3) is 100-300mm above the top of the vertical discharge tube (3).

6. The spiral cooling and heat dissipation structure for substrate glass production according to claim 1, characterized in that, The spiral cooling heat dissipation pipe (2) is assembled and welded from multiple pipe segment units that are segmented along the spiral path, and the central angle of each pipe segment unit is 30°-60°.

7. The spiral cooling and heat dissipation structure for substrate glass production according to claim 1, characterized in that, It also includes a modular support structure, which is composed of multiple refractory modules arranged in layers along the spiral direction. Each refractory module is provided with a receiving cavity that matches the local shape of the spiral cooling heat dissipation pipe (2).

8. A spiral cooling and heat dissipation structure for substrate glass production according to claim 7, characterized in that, An expansion gap of 2-5mm is left between the receiving cavity and the tube body of the spiral cooling heat dissipation pipe (2), and the expansion gap is filled with ceramic fiber blanket; the outside of the modular support structure is covered with a heat insulation layer and a sealing steel plate in sequence, and the heat insulation layer includes an inner high-alumina fiber blanket and an outer microporous nano heat insulation board.

9. A cooling method based on the spiral cooling and heat dissipation structure for substrate glass production according to any one of claims 1 to 8, characterized in that, Includes the following steps: Connect the inlet end of the spiral cooling heat dissipation pipe (2) to the outlet end of the vertical stirring pipe (1), and connect the outlet end of the spiral cooling heat dissipation pipe (2) to the inlet end of the vertical discharge pipe (3). The molten glass flows sequentially through the vertical stirring tube (1), the spiral cooling and heat dissipation tube (2), and the vertical discharge tube (3). Control the glass liquid level in the vertical stirring tube (1) and the vertical discharge tube (3) so that the glass liquid level in the vertical stirring tube (1) is kept at a safe height from the top of the vertical stirring tube (1), and the glass liquid level in the vertical discharge tube (3) is kept at a safe height from the top of the vertical discharge tube (3).

10. A cooling method for a spiral cooling and heat dissipation structure used in substrate glass production according to claim 9, characterized in that, The safe height is 100-300mm.

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