Connecting structure and method for platinum channel expansion management

Abstract

The invention discloses a connecting structure and method for platinum channel expansion management, and aims to overcome the defect that in the prior art, flange connection operation is difficult in a high-temperature narrow space. According to the connecting structure, the connecting lugs with the L-shaped open type connecting holes are adopted, the bolts are radially placed in through the opening sections, then the bolts are horizontally pushed into the locking sections to complete positioning, and the operation difficulty of traditional axial penetrating of the bolts is thoroughly avoided. The double-step structure of the connecting lug is matched with the height difference design, so that the connecting lug bears the mechanical load after the flange faces are contacted preferentially to form sealing. According to the corresponding connecting method, bolt placing, positioning and fastening are completed in sequence through a step-by-step operation process, and it is ensured that flange faces are tightly attached in combination with real-time monitoring. According to the scheme, the operation efficiency and reliability of flange connection in the high-temperature narrow space are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of flat panel display substrate glass manufacturing technology, and specifically to a connection structure and method for platinum channel expansion management. Background Technology

[0002] As flat panel display technology advances towards higher resolution, larger sizes, and ultra-thin designs, higher demands are placed on the stability and precision of substrate glass production equipment. In the substrate glass manufacturing process, the management of temperature expansion of the hot-end equipment is a critical step. The system needs to be slowly heated from room temperature to a high-temperature operating state of 1200℃-1620℃ according to a preset curve. This process aims to ensure the orderly expansion of each component, avoid thermal shock, and ensure that the predetermined assembly position and sealing state are achieved at the designed temperature.

[0003] The platinum channel, as a core hot-end device, is responsible for the refining, homogenization, and conveying of molten glass. Its expansion behavior directly affects production safety and product quality. The mating area between the refining section and the cooling section is a critical part for expansion release, and a precisely calculated expansion gap must be reserved during cold installation. As the temperature rises, the gap gradually decreases. At operating temperature, the two flange faces should be completely fitted together, at which point a tight connection is required.

[0004] However, existing bolted connection methods have significant limitations. The compact structure and extremely limited operating space in this area make it difficult for personnel to quickly insert and reliably tighten the bolts. Extended operation time not only affects production efficiency but may also generate additional thermal stress due to localized temperature drops. Simultaneously, the limited operating angle makes bolt alignment difficult, easily introducing off-center loading and assembly stress, which may lead to loosening of connections, seal failure, or even structural damage during long-term operation, seriously threatening the stability and safety of the passageway. Therefore, there is an urgent need to develop a new connection structure and installation method that is open, easy to operate, and significantly improves connection efficiency and alignment accuracy. Summary of the Invention

[0005] The purpose of this invention is to provide a connection structure and method for platinum channel expansion management, so as to overcome the shortcomings of the prior art in the difficulty of flange connection operation in high temperature and confined space.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a connection structure for expansion management of a platinum channel, comprising a plurality of connecting lugs disposed on the platinum channel clarification outlet flange and the cooling inlet flange; the connecting lugs are provided with L-shaped open connecting holes, one end of the L-shaped open connecting hole being an open section forming a bolt insertion channel, and the other end being a locking section forming a bolt locking position; the connecting lugs are double-step structures, including a lower step surface connected to the flange and an upper step surface for bolt clamping, the lower step surface and the upper step surface being smoothly transitioned by an arc surface and forming a height difference.

[0007] The connecting lugs are made of pure copper and are fixed to the clarification outlet flange of the clarification section and the cooling inlet flange of the cooling section by silver brazing.

[0008] The width of the connecting ear is 12-15mm and the height is 30-35mm. The opening width of the L-shaped open connecting hole is 6mm and the height difference is 3-8mm.

[0009] Each set of connecting lugs includes two, one fixed at the corresponding position of the clarification outlet flange and the cooling inlet flange; the connecting lugs are arranged in a 90° circumferentially evenly distributed manner, and there are four sets in total.

[0010] Secondly, the present invention also provides a connection method for platinum channel expansion management, the method using the above-described connection structure, comprising the following steps: S1, during cold installation, controls the reserved expansion gap between the clarifying outlet flange and the cooling inlet flange; S2, After the channel is heated to the working temperature and the flange faces at the clarified outlet flange and the cooling inlet flange are in contact, insert the bolts into the channel from the top opening of the L-shaped open connection hole opening section. S3, push the bolt horizontally into the locking section of the L-shaped open connection hole for positioning; S4, repeat S2-S3 to insert bolts into all L-shaped open connection holes in sequence; S5, tighten the bolts in sequence step by step, and monitor the flange face contact status of the clarifying outlet flange and the cooling inlet flange in real time during the tightening process.

[0011] The expansion gap reserved in S1 is 180mm-240mm; the working temperature in S2 is 1600℃±10℃; the step-by-step tightening in S4 includes first pre-tightening to 10N·m, and then finally tightening synchronously to 20N·m.

[0012] The step-by-step tightening in S4 adopts a cross-symmetrical sequence and is finally tightened synchronously in three gradients of 15 N·m, 18 N·m and 20 N·m, with each gradient held for 2 minutes.

[0013] The S5 uses a feeler gauge with an accuracy of 0.1mm to monitor the flange face contact status in real time, ensuring that the gap is no greater than 0.05mm.

[0014] In S2, an infrared thermal imager is used to confirm the flange surface fit; in S4, an extended-arm torque wrench is used for tightening.

[0015] It also includes using thermal insulation cotton to seal the connection area and maintain the temperature above 1600℃.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: Firstly, this invention provides a connection structure for platinum channel expansion management, which effectively overcomes the shortcomings of existing technologies in flange connection operations in high-temperature, confined spaces through innovative structural design. The L-shaped open connection hole on the connecting lug decomposes the traditional axial bolt insertion operation into two independent actions: the open section allows direct radial insertion of the bolt, completely avoiding the operational difficulties of precise axial alignment in confined spaces; subsequently, the horizontally pushed locking section completes the circumferential positioning of the bolt. This step-by-step operation significantly reduces the difficulty of the operation. The double-step structure, through its height difference design, creates a clear force sequence: during bolt tightening, the lower step surface ensures a stable flange connection, while the upper step surface performs the bolt clamping function. The height difference between the two ensures that the flange surfaces can make priority contact and form an effective seal before the connecting lug begins to bear mechanical loads. The smooth transition of the arc surface effectively avoids stress concentration and improves the structural reliability of the connecting lug under high-temperature conditions. The synergistic cooperation between the L-shaped open connection hole and the double-step structure solves the technical problem of difficult bolt installation in confined spaces and ensures the sealing reliability of the flange connection, providing structural protection for the stable operation of the platinum channel in high-temperature environments.

[0017] Secondly, this invention also provides a connection method for platinum channel expansion management. This method utilizes the aforementioned connection structure and effectively solves the technical problem of difficult flange connection operations in high-temperature, confined spaces through optimized operating procedures. The method first controls the reserved expansion gap during the cold installation stage, providing necessary compensation space for thermal expansion and ensuring precise flange contact after system heating. The operation of inserting bolts radially along the channel from the top opening of the L-shaped open connection hole section fully utilizes the open feature of the connection structure, avoiding the space limitations of axial bolt insertion required in traditional installations. The step of horizontally pushing the bolts into the locking section, through simple translational movement, completes the circumferential positioning of the bolts, significantly reducing operational difficulty. The process of sequentially inserting bolts into all connection holes before uniform tightening helps ensure uniform force distribution at each connection point. The step-by-step bolt tightening method effectively controls the application of preload, avoiding structural deformation that may be caused by one-time tightening. Real-time monitoring of the flange face contact status ensures that any gaps that may occur during tightening can be detected and adjusted promptly, guaranteeing a tight flange contact. This step-by-step operation method, together with the L-shaped open connection hole structure, forms a complete collaborative system. It not only leverages the advantage of the open connection hole for easy installation, but also ensures the final connection quality through process control, significantly improving assembly efficiency and reliability in high-temperature and confined spaces. Attached Figure Description

[0018] Figure 1 This is a front view of the connection structure used for platinum channel expansion management in an embodiment of the present invention.

[0019] Figure 2 This is a side view of the connection structure used for platinum channel expansion management in an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the connection structure assembly for platinum channel expansion management in an embodiment of the present invention.

[0021] Figure 4 This is a layout diagram of the hot end equipment for the substrate glass.

[0022] Figure 5 This is a diagram showing the connection structure between the clarification section and the cooling section.

[0023] Figure 6 This is a diagram of an existing flange connection structure.

[0024] Figure 7 This is a flowchart of a connection method for platinum channel expansion management in an embodiment of the present invention.

[0025] In the diagram, 1. Kiln; 2. Heating section; 3. Clarification section; 4. Cooling section; 5. Stirring section; 6. Cooling section; 7. Feeding section; 8. Molding system; 9. Connecting bolts; 10. External refractory structure; 11. Clarification outlet flange; 12. Cooling inlet flange; 13. Flange; 14. Connecting lug; 15. Conductive busbar. Detailed Implementation

[0026] As flat panel display technology advances towards higher resolution, larger sizes, and ultra-thin designs, higher demands are placed on the stability and precision of substrate glass production equipment. The platinum channel, as a core hot-end component, has a crucial expansion release point at the interface between its refining and cooling sections; precisely calculated expansion gaps must be reserved during cold installation. After the system reaches its operating temperature, the two flange faces should be fully fitted and securely connected.

[0027] However, existing bolted connection methods have significant shortcomings. The area has a compact structure and extremely limited operating space, making it difficult for personnel to quickly insert and reliably tighten bolts. Extended operation time not only affects production efficiency but may also lead to localized temperature drops and additional thermal stress. Simultaneously, the limited operating angle makes bolt alignment difficult, easily introducing off-center loads and assembly stresses. Over long-term operation, this poses a risk of loose connections and seal failure, seriously threatening the stability and safety of the passageway.

[0028] Based on the above background, this invention provides a connection structure and method for platinum channel expansion management. The innovatively designed connecting lug structure effectively overcomes the shortcomings of existing technologies in flange connection operations within high-temperature, confined spaces, where difficulties are encountered. The L-shaped open connection hole, with its top-opening insertion channel, allows bolts to be inserted directly radially, completely avoiding the difficulties of axial bolt insertion required in traditional structures. The double-step structure, combined with the height difference design, ensures that the flange faces can preferentially contact and form sealing pressure before the connecting lug begins to bear mechanical loads. The corresponding installation method simplifies the bolt positioning process through a first-insert-then-push-in step. Combined with step-by-step tightening and real-time monitoring, it achieves a fast and reliable connection in confined spaces, significantly improving assembly accuracy and operational efficiency.

[0029] 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, 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 are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," 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 invention 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 invention.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a number" means two or more, unless otherwise explicitly specified.

[0033] Reference Figure 1 and Figure 2 The image shows a specific embodiment of the connection structure for platinum channel expansion management provided by the present invention, as follows: Figure 4 The diagram shows the layout of the hot-end equipment for the substrate glass. One end is a furnace 1, which is sequentially connected to the heating section 2, refining section 3, cooling section 4, stirring section 5, and cooling section 6 of the platinum channel. The glass is then output from the feeding section 7 to the forming system 8. The connection structure provided by this invention includes several sets of connecting ears 14 on the refining outlet flange 11 at the outlet of the refining section 3 in the platinum channel and on the cooling inlet flange 12 at the inlet of the cooling section in the platinum channel. Each connecting ear 14 has an L-shaped open connection hole, one end of which is an open section forming a bolt insertion channel, and the other end is a locking section forming a bolt locking position. The connecting ear 14 has a double-step structure, including a lower step surface connected to the flange 13 and an upper step surface for bolt clamping. The lower step surface and the upper step surface smoothly transition through an arc surface, forming a height difference.

[0034] In this specific embodiment, the L-shaped open connection hole design allows bolts to be inserted radially directly from the open section without needing to be inserted axially. This feature effectively solves the problem of difficult bolt alignment in high-temperature, confined spaces. The locking section provides reliable circumferential positioning for the bolt, preventing rotation or displacement during tightening. The double-step structure of the connecting lug 14 has a clear division of mechanical functions: the lower step surface achieves a stable connection with the flange 13, while the upper step surface serves as the bolt clamping function. The smooth transition between the two through the arc surface avoids stress concentration. The height difference design ensures that the flange surface can make priority contact and form an effective seal during bolt tightening, after which the connecting lug 14 begins to bear mechanical load. This segmented force-bearing mechanism ensures both a tight fit of the sealing surface and avoids flange surface gaps caused by premature stress on the connecting lug 14. The synergistic effect of the L-shaped open connection hole and the double-step structure achieves a balance between ease of bolt installation and connection reliability, providing effective structural protection for flange connections under high-temperature conditions.

[0035] In another specific embodiment of the present invention, the main feature dimensions of the L-shaped open connection hole on the connecting ear 14 have been carefully optimized, referring to... Figure 1Dimension A (width) is designed to be 12-15mm to ensure that the M10 bolt can be easily inserted; Dimension B (height) is 30-35mm to ensure that the bolt enters to a certain radial depth, so that the effective working surface of the bolt for the connecting lug 14 is relatively reliable; Dimension C (opening width) and the radius of the arc are both 6mm, so as to form a reasonable fit clearance with the M10 bolt. The significant advantage of this "L-shaped" open design is that it allows the operator to directly insert the bolt radially and then push it horizontally into the locking position, completely avoiding the difficulty of axial insertion of the bolt required by traditional structures.

[0036] From the side view of the connecting ear 14 in this specific embodiment, as shown... Figure 2 As shown, a double-plane stepped design with an arc transition is adopted. The lower stepped surface is reliably connected to the platinum-rhodium alloy flange 13 via silver brazing, with its outer surface flush with the flange face. The upper stepped surface serves as the bolt clamping area, and the two planes smoothly transition through an arc surface, forming a height difference of 3-8mm. This stepped design ensures that the flange face can make priority contact and form sufficient sealing pressure during tightening, after which the connecting lug 14 begins to bear mechanical loads. The thickness of the connecting lug 14 is designed to be 10mm, while the thickness of the flange 13 is typically between 1.2-2.0mm. This thickness is determined by both the internal platinum material and the external mechanical strength, ensuring both the material quantity and electrical characteristics of the internal flange 13 and the reliability of the external connection base. In terms of material selection, the flange 13 uses the same platinum-rhodium alloy as the platinum channel body to ensure high-temperature corrosion resistance, while the connecting lug 14 uses pure copper, which meets the high-temperature strength requirements and also takes into account certain high-temperature resistance characteristics. Figure 3 As shown, when the two flange faces of the clarifying outlet flange 11 and the cooling inlet flange 12 are joined, the flange faces are first ensured to make full contact and form a certain amount of extrusion deformation to produce a reliable sealing effect, and then the connecting lugs 14 begin to function. This design ensures the principle of sealing surface priority and completely eliminates the risk of glass melt leakage. The connecting bolts 917 use M10 standard bolts, and the four sets of connecting lugs 14 are symmetrically distributed at 90 degrees, providing the possibility for simultaneous operation on both sides.

[0037] The hot-end equipment of the substrate glass is a highly integrated and complex system, such as Figure 4As shown, the system mainly comprises three major systems: furnace 1, platinum channel, and forming system 8. Furnace 1 is responsible for melting the raw materials into molten glass; forming system 8 is responsible for the final shaping of the high-quality molten glass that has undergone multiple processes; the platinum channel, as the key link connecting the two, undertakes important functions such as clarifying, homogenizing, conveying, and temperature regulating the molten glass. The platinum channel is functionally divided into a heating section 2, a clarifying section 3, a cooling section 4, a stirring section 5, a cooling section 6, and a feeding section 7. This invention focuses on solving the expansion management problem in the interface area between the clarifying section 3 and the cooling section 4, specifically the reliability of the connection between the clarifying outlet flange 11 and the cooling inlet flange 12. During the heating process of the hot-end equipment, the thermal expansion generated by the entire front system from the rear wall of furnace 1, heating section 2, clarifying section 3 to cooling section 4 ultimately needs to be released and compensated in the interface area between the clarifying section 3 and the cooling section 4. This reserved expansion gap is the result of precise thermodynamic calculations and continuous correction and optimization based on feedback from expansion data in long-term production practice. In high-generation equipment, this gap is usually controlled between 180mm and 240mm. The accuracy of this value is directly related to whether the entire hot-end equipment can safely and stably reach the predetermined working position and ensure the absolute safety of the equipment.

[0038] Although the calculation of the reserved gap is quite accurate, it still faces many shortcomings in the actual flange connection operation after heating. For example... Figure 5 As shown, most of the main sections before and after the clarifying outlet flange 11 and the cooling inlet flange 12 are surrounded by the platinum channel external fire-resistant structure 10. The external fire-resistant structure 10 typically leaves only a narrow space of 50-120mm in the flange area, and the radial depth from the outer contour of the external fire-resistant structure 10 to the flange face reaches 20-100mm. This limited operating space poses certain challenges to traditional bolted connections. For example... Figure 6 The existing connection structure shown uses a straight-section enclosed connecting lug 14 directly connected to the flange 13, and a conductive busbar 15 is also installed near the flange 13. Operators need to precisely align the bolts and insert them into the holes of the connecting lug 14 within an extremely limited space. In actual operation, problems such as bolts falling off and difficulty in alignment frequently occur. This not only significantly extends the operation time (usually requiring more than 45 minutes), but more seriously, prolonged operation in high-temperature environments can lead to localized temperature drops, generating additional thermal stress and affecting connection quality. Simultaneously, due to the limited operating angle, bolts often cannot be directly aligned with the holes, easily generating assembly stress, which may lead to loosening of the connection and seal failure during long-term operation.

[0039] In a specific embodiment of the present invention, a connection method for platinum channel expansion management is also provided. This method uses the connection structure described above, with reference to... Figure 7 As shown, it includes the following steps: S1, during cold installation, control the reserved expansion gap between the clarifying outlet flange 11 and the cooling inlet flange 12; S2, after the channel is heated to the working temperature and the flange faces at the clarified outlet flange 11 and the cooling inlet flange 12 are in contact, insert the bolts into the channel from the top opening of the L-shaped open connection hole opening section. S3, push the bolt horizontally into the locking section of the L-shaped open connection hole for positioning; S4, repeat S2-S3 to insert bolts into all L-shaped open connection holes in sequence; S5, tighten the bolts in sequence step by step, and monitor the flange face contact status of the clarifying outlet flange 11 and the cooling inlet flange 12 in real time during the tightening process.

[0040] In this specific embodiment, the connection method, through a step-by-step operation process and a dedicated connection structure, achieves reliable installation of flange connections in high-temperature, confined spaces. During the cold installation phase, a pre-reserved expansion gap is controlled to provide necessary compensation space for thermal expansion, ensuring precise fit of the flange surfaces after the system heats up. The operation method of inserting bolts radially along the channel from the top opening of the L-shaped open connection hole section fully utilizes the open feature of the connection structure, completely avoiding the space constraints of axial bolt insertion required in traditional installations. The step of horizontally pushing the bolt into the locking section allows for circumferential positioning of the bolt through a simple translational movement, significantly reducing the operational difficulty.

[0041] The sequential placement of bolts into all connection holes before unified tightening ensures uniform stress distribution at each connection point. This step-by-step tightening method effectively controls the application of preload, preventing structural deformation that might result from a single tightening. Real-time monitoring of the flange face contact status ensures timely detection and adjustment of any gaps during tightening, guaranteeing a tight fit between the flange faces. This step-by-step operation, combined with the L-shaped open connection holes and the double-step connecting lug 14 structure, forms a complete collaborative system. It leverages the ease of installation offered by the open connection holes while ensuring the final connection quality through process control, effectively guaranteeing the reliable operation of the platinum channel under high-temperature conditions.

[0042] In another specific embodiment of the invention, the provided connection method first precisely controls the reserved expansion gap between the flanges of the clarifying section and the cooling section during cold installation to ensure that the two flange faces can be completely fitted after heating. After the channel is heated to the working temperature and the flange faces are completely fitted, two operators simultaneously operate on both sides of the channel. An M10 bolt is inserted from the open side of the L-shaped hole opening section of the connecting lug, and then horizontally pushed into the locking section to complete the initial positioning. Tightening is performed in two steps using a torque wrench: first, pre-tightening to 10 N·m to ensure alignment, and finally simultaneously tightening to 20 N·m. Throughout the tightening process, the flange face contact status needs to be monitored in real time to ensure there are no visible gaps. Finally, high-temperature insulation cotton is used to quickly seal the connection area, maintaining the internal temperature above 1600℃. This installation method reduces the operation time from the traditional 45 minutes or more to less than 10 minutes, while improving the flange face contact uniformity to over 95%, significantly improving connection reliability and operational safety.

[0043] Specifically, during the cold installation phase of the equipment, a laser rangefinder is first used to accurately measure and adjust the reserved expansion gap between the clarifying outlet flange 11 and the cooling inlet flange 12 to ensure that it is strictly controlled within the design range of 180mm±5mm (for specific production line specifications). This value is determined based on historical thermal expansion data and finite element simulation results. Four sets of connecting lugs are welded to the outside of the flange in a 90° circumferential distribution using silver brazing filler metal with a silver content of ≥45%. During the welding process, a fixture is used to ensure that the lower step surface of the connecting lug is flush with the outer side of the flange 13, and the weld height is controlled within 1.5mm ± 0.2mm. After the channel is heated to the working temperature (1600℃±10℃) and kept at that temperature for 2 hours, an infrared thermal imager is used to confirm that the two flange surfaces are completely in contact and the temperature is uniform. Then, two operators use a special extended arm torque wrench (600mm in length) to work simultaneously from both sides of the channel. First, insert the M10 bolt (made of 310S stainless steel) into the L-shaped hole opening of the connecting lug. Then, use a magnetic guide tool to push the bolt horizontally into the locking section until the bolt head initially contacts the stepped surface of the connecting lug. Use a cross-symmetrical tightening sequence: first, pre-tighten the two bolts on the diagonal to 10 N·m, then pre-tighten the other two diagonal bolts to the same torque, and repeat this process three times to eliminate stress concentration; In the final synchronous tightening stage, a torque wrench with a digital display is used to apply load in three gradients (15 N·m, 18 N·m, 20 N·m). It is preferable to use an extended arm torque wrench (600 mm in length). Each gradient is held for 2 minutes to allow stress redistribution. At the same time, the contact status is monitored in real time by a 0.1 mm precision feeler gauge embedded in the flange face to ensure that the flange face gap is no greater than 0.05 mm. Immediately after tightening, a multi-layer composite insulation cotton (generally 1260 type ceramic fiber blanket) is used for rapid sealing. The filling and compaction are completed within 5 minutes, keeping the temperature fluctuation in the connection area within ±5℃. The entire insulation operation can be completed in 8-10 minutes with two people working together, which is more than 4 times more efficient than traditional methods.

[0044] The connection structure and method of this invention have been verified through practical application on an ultra-high generation substrate glass production line, achieving significant technical effects. First, the flange connection operation time has been stably reduced from over 45 minutes using the traditional method to less than 10 minutes, improving efficiency by approximately 77.8%. Second, due to the significant reduction in operation time, the temperature fluctuation in the connection area during installation has been significantly reduced from over 150°C before implementation to less than 50°C, effectively avoiding thermal stress problems caused by sudden temperature drops. Third, according to a coordinate measuring machine, the parallelism error of the flange surface after installation is controlled within 0.05mm, improving accuracy by 60% compared to the traditional method. Finally, no glass melt leakage or contamination accidents caused by connection problems occurred during the entire verification period, and the continuous operation stability of the equipment improved by 35%, providing a reliable technical guarantee for the high-volume stable production of ultra-high generation substrate glass production lines. These measured data fully demonstrate the significant advantages and reliability of this invention in engineering applications.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connection structure for platinum channel expansion management, characterized in that, Includes several sets of connecting lugs (14) on the flanges (13) of the platinum channel clarification outlet flange (11) and cooling inlet flange (12). The connecting lug (14) is provided with an L-shaped open connecting hole. One end of the L-shaped open connecting hole is an open section, which forms a bolt insertion channel, and the other end is a locking section, which forms a bolt locking position. The connecting lug (14) is a double-step structure, including a lower step surface connected to the flange (13) and an upper step surface for bolt clamping. The lower step surface and the upper step surface are smoothly transitioned by an arc surface and form a height difference.

2. The connection structure for platinum channel expansion management according to claim 1, characterized in that, The connecting lug (14) is made of pure copper and is fixed to the clarification outlet flange (11) of the clarification section (3) and the cooling inlet flange (12) of the cooling section (4) by silver brazing.

3. The connection structure for platinum channel expansion management according to claim 2, characterized in that, The width of the connecting ear (14) is 12-15mm, the height is 30-35mm, the opening width of the L-shaped open connecting hole is 6mm, and the height difference is 3-8mm.

4. A connection structure for platinum channel expansion management according to any one of claims 2, characterized in that, Each set of connecting ears (14) includes two, one fixed at the corresponding position of the clarification outlet flange (11) and the cooling inlet flange (12); the connecting ears (14) are arranged in a 90° circumferentially evenly distributed manner, and there are four sets.

5. A connection method for platinum channel expansion management, characterized in that, The method uses a connection structure for platinum channel expansion management according to any one of claims 1 to 4, and includes the following steps: S1, during cold installation, control the reserved expansion gap between the clarifying outlet flange (11) and the cooling inlet flange (12); S2, after the channel is heated to the working temperature and the flange faces of the clarified outlet flange (11) and cooling inlet flange (12) are in contact, insert the bolts into the channel from the top opening of the L-shaped open connection hole opening section; S3, push the bolt horizontally into the locking section of the L-shaped open connection hole for positioning; S4, repeat S2-S3 to insert bolts into all L-shaped open connection holes in sequence; S5, tighten the bolts in sequence step by step, and monitor the flange face contact status of the clarifying outlet flange (11) and the cooling inlet flange (12) in real time during the tightening process.

6. The connection method for platinum channel expansion management according to claim 5, characterized in that, The reserved expansion gap mentioned in S1 is 180mm-240mm; the working temperature mentioned in S2 is 1600℃±10℃; the step-by-step tightening mentioned in S4 includes first pre-tightening to 10N·m, and then finally tightening synchronously to 20N·m.

7. The connection method for platinum channel expansion management according to claim 6, characterized in that, The step-by-step tightening in S4 adopts a cross-symmetrical sequence and is finally tightened synchronously in three gradients of 15 N·m, 18 N·m and 20 N·m, with each gradient held for 2 minutes.

8. A connection method for platinum channel expansion management according to any one of claims 5, characterized in that, The S5 uses a feeler gauge with an accuracy of 0.1mm to monitor the flange face contact status in real time, ensuring that the gap is no greater than 0.05mm.

9. A connection method for platinum channel expansion management according to any one of claims 5, characterized in that, In S2, an infrared thermal imager is used to confirm the flange surface fit; in S4, an extended-arm torque wrench is used for tightening.

10. A connection method for platinum channel expansion management according to any one of claims 5, characterized in that, It also includes using thermal insulation cotton to seal the connection area and maintain the temperature above 1600℃.

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