A design method for stable feeding of a large-lead overflow system and related device

Abstract

The application discloses a design method for stable feeding of a large-extraction-amount overflow system and a related device, and belongs to the technical field of glass substrate manufacturing. A reference overflow feeding system is selected, and related parameters of the reference overflow feeding system are acquired. The overflow feeding system comprises a feeding pipe and an L pipe. Then, related parameters of the L pipe are designed according to an L pipe pressure loss flow relationship of the reference overflow feeding system. Related parameters of a feeding bowl and the feeding pipe are designed according to a feeding pipe pressure loss flow relationship of the reference overflow feeding system, a free liquid level height of the feeding pipe and a free liquid level distance between the feeding pipe and the L pipe. The application establishes a design benchmark for the L pipe and the feeding pipe, provides more scientific design standards and evaluation standards for the design of the large-extraction-amount overflow feeding system, and meets the demand for higher generations and higher extraction amounts.

Description

Technical Field

[0001] This invention belongs to the field of glass substrate manufacturing technology, and relates to a design method and related apparatus for stable material supply of a large lead-out overflow system. Background Technology

[0002] In the manufacturing of flat panel displays such as TFT-LCDs (Thin Film Transistor Displays) and PDPs (Plasma Display Panels), glass substrates are typically manufactured using an overflow drawing method. Overflow forming, also known as natural forming, produces the highest quality glass substrates using a wedge-shaped overflow trough. The stirred and homogenized (physical, chemical, and thermal) molten glass is supplied to the overflow trough through a feed pipe and an L-tube. It then flows through an overflow weir to both sides, fuses at the root of the overflow brick, and is drawn downwards to form a glass substrate of the target thickness. The glass overflow and traction drawing process involves complex structural changes (physical dimensions and molecular level). By establishing relevant kinetic models, the thickness distribution and stress patterns below the overflow surface and root can be revealed. The flow of molten glass in the feed pipe or L-pipe depends entirely on the pressure difference of the molten glass. The initial stage is set at a higher temperature (relative to the design flow rate temperature), resulting in a lower viscosity of the molten glass than the design flow rate. This creates a pipeline pressure that forces the glass to overcome pipeline friction and flow forward. The temperature of the subsequent stage is set to the design flow rate temperature for entering the overflow tank. This ensures that the glass enters the overflow tank at the design flow rate and flows into the overflow tank homogeneously and stably. In summary, the purpose of the initial stage is to cool the glass and provide flow pressure, while the purpose of the subsequent stage is to provide a homogeneous and stable design flow rate of glass.

[0003] The insertion depth of the feed pipe represents the distance from the free surface of the L-tube to the outlet of the feed pipe, and is a process parameter for adjusting the flow rate (outflow) of the overflow system. Increasing the insertion depth of the feed pipe decreases the outflow of the glass substrate, and vice versa. As the molten glass propels from the near end to the far end of the overflow channel, it is driven by mass force and pressure in the direction of travel, overcoming laminar viscous resistance, and flows downwards from the overflow weir. The fluid dynamics equations based on this principle integrate the effects of these forces and form the basis of the overflow channel design. On the vertical overflow plane, the mass force and pressure are sufficiently large, and the viscosity is relatively low, so the influence of lateral surface tension is minimal, resulting in almost no lateral contraction. On the inclined plane, the components of the mass force and pressure along the inclined plane decrease significantly, and the viscosity gradually increases, highlighting the effect of lateral surface tension and producing significant lateral contraction.

[0004] The glass melt is almost completely wetted by platinum (in air). The horizontal wetting length provided by the wetting surface of the platinum guide plate is greater than the cut length of the overflow surface, spreading or thinning the glass flowing over it, effectively reducing the thickness of the longitudinal edge. The guide plate can counteract the effects of surface tension and volume forces on the width of the glass strip, making the glass strip wider. Optimizing the shape of the guide plate can improve the strip shrinkage and distribution stability, but will not significantly affect the distribution (flow rate) at the near and far ends of the glass strip. The uniformity of distribution depends on: (1) the overflow brick bottom curve; (2) the coordination of flow rate, viscosity and muffle furnace tilt angle; (3) the stability of flow rate, viscosity and temperature; and (4) the gradual creep of the overflow brick over time.

[0005] The material distribution starts from the near end of the overflow weir. The glass flow pattern can be controlled by adjusting the inlet and outlet temperatures of the feed pipe and the MSU temperature, as well as their coordination. The near and far ends, surface, and bonding line of the glass substrate have corresponding positional relationships with the cross-sections of the feed pipe and L-tube. Utilizing the feeding and forming relationship, defects (irregular glass, bubbles) in the glass vortex region (such as the top of the feed trough, the junction of the feed pipe and L-tube) can be controlled to be directed to non-critical areas of the glass substrate (such as the near and far edge plates, bonding lines, etc.), minimizing their appearance in the useful areas of the glass substrate (especially the surface), thus preventing defects from periodically affecting the forming quality of the glass substrate. The feeding and forming relationship also allows for control of localized viscosity temperatures in the glass (such as L-tube heaters), providing limited means for controlling the flow pattern of the edge plates and overflow thickness. For example, controlling the local heating power of the feed pipe / L-tube can create temperature differences on the circumferential surface, thereby adjusting the glass flow rate (flow rate) towards the corresponding area of ​​the glass substrate.

[0006] Regarding the stable feeding of the overflow system, the design of the feeding system (especially the feeding pipe) and L-tube system structure is crucial, particularly the diameter and platinum length of the feeding pipe and L-tube. Secondly, the matching relationship between the feeding pipe and L-tube must be considered to provide a greater process margin for adjustments. The design of the feeding pipe and L-tube should achieve stable flow conditions based on the designed outflow and pressure loss correction, ensuring the molten glass is within the L-tube. A certain safety height must be maintained between the free liquid level and the pipe opening. All of these design considerations provide sufficient process means for subsequent stable glass flow, stable flow rate, stable sideplate flow, stable effective surface thickness distribution of the glass substrate, and stable process adjustments.

[0007] In recent years, to improve production line efficiency, glass substrate sizes have become increasingly larger, and lead-out rates have also increased. Existing feeding system design methods are struggling to meet the demands of higher generations and higher lead-out rates, especially the requirement to ensure the stability of the glass lead plates. Therefore, a feeding system that matches the overflow system has become one of the core design considerations. Summary of the Invention

[0008] The purpose of this invention is to solve the technical problem that the design of large-volume overflow feeding systems in the prior art is difficult to meet the needs of higher generations and higher volumes, and to provide a design method and related apparatus for stable feeding of large-volume overflow systems.

[0009] To achieve the above objectives, the present invention employs the following technical solution:

[0010] In a first aspect, the present invention provides a design method for stable material supply in a large-capacity overflow system, comprising the following steps:

[0011] A reference overflow feeding system is selected; the overflow feeding system includes a feeding pipe and an L-pipe;

[0012] The relevant parameters of the L-tube are designed based on the pressure loss and flow rate relationship of the L-tube in the reference overflow feeding system.

[0013] Based on the pressure loss and flow rate relationship of the feed pipe in the reference overflow feed system, the height of the free liquid surface in the feed pipe, and the distance between the feed pipe and the L-pipe, design the relevant parameters of the feed bowl and the feed pipe.

[0014] Secondly, the present invention provides a design system for stable material supply in a large-capacity overflow system, comprising:

[0015] The acquisition module is used to select a reference overflow feeding system; the overflow feeding system includes a feeding pipe and an L-pipe;

[0016] The L-tube design module is used to design the relevant parameters of the L-tube based on the L-tube pressure loss-flow relationship of the reference overflow feeding system.

[0017] The feed pipe design module is used to design the relevant parameters of the feed bowl and feed pipe based on the pressure loss and flow relationship of the feed pipe in the reference overflow feed system, the height of the free liquid surface in the feed pipe, and the distance between the feed pipe and the L-pipe free liquid surface.

[0018] Thirdly, the present invention provides a computer device including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method described above.

[0019] Fourthly, the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the method described above.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This invention discloses a design method and related apparatus for stable feeding of a large-volume overflow system. The invention selects a mature overflow feeding system (including a feed pipe and an L-pipe) as a design reference, and obtains relevant parameters of the reference overflow feeding system, including: reference discharge volume; reference overflow brick inlet groove width, inlet groove height, overflow height, etc.; reference feed pipe free liquid level height, average feed viscosity, feed bowl diameter, feed bowl length, feed pipe length, feed pipe diameter, etc.; and reference L-pipe average feed viscosity, inlet horizontal coordinate, inlet vertical coordinate, L-pipe free liquid level height, L-pipe longitudinal length, L-pipe transverse length, and L-pipe corner length, etc. L-pipe design modules and feed pipe design modules are established respectively, thereby completing the overall feeding system design. This method, based on the pressure loss-flow relationship of the L-tube, completes the analysis of the designed L-tube diameter, designed total platinum length of the L-tube, designed longitudinal platinum length of the L-tube, designed transverse platinum length of the L-tube, designed corner platinum length of the L-tube, designed horizontal coordinates of the L-tube inlet, designed vertical coordinates of the L-tube inlet, and designed free liquid level height of the L-tube. Based on the pressure loss-flow relationship of the feed pipe, the free liquid level height of the feed pipe, and the distance between the feed pipe and the L-tube free liquid level, it completes the analysis of the designed feed bowl length, designed feed bowl diameter, designed feed pipe diameter, and designed feed pipe length. It establishes structural design benchmarks for the L-tube and feed pipe, providing more scientific design and evaluation standards for the design of large-output overflow feed systems. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, 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 the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a flowchart of the method of the present invention;

[0024] Figure 2 This is a schematic diagram of the system of the present invention;

[0025] Figure 3 This is a front view schematic diagram of the kiln structure and electrode configuration according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the overflow feeding system according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the computer device structure of the present invention.

[0028] Wherein: 1-overflow brick; 2-overflow trough; 3-L-pipe of glass liquid supply device; 4-root of overflow brick; 5-drain plate; 6-supply pipe; 7-L-pipe. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present 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, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0035] The present invention will now be described in further detail with reference to the accompanying drawings:

[0036] See Figure 1 This invention discloses a design method for stable material supply in a large-capacity overflow system, comprising the following steps:

[0037] S1, Select a reference overflow feeding system; the overflow feeding system includes a feeding pipe and an L-pipe;

[0038] S2, Design the relevant parameters of L-pipe based on the pressure loss and flow rate relationship of L-pipe in the reference overflow feeding system;

[0039] S3. Based on the pressure loss and flow rate relationship of the feed pipe in the reference overflow feed system, the height of the free liquid surface in the feed pipe, and the distance between the feed pipe and the L pipe, design the relevant parameters of the feed bowl and the feed pipe.

[0040] In one feasible embodiment of the present invention, the relevant parameters of the L-tube specifically include: L-tube lead-out amount, L-tube diameter, L-tube platinum length, L-tube longitudinal platinum length, L-tube transverse platinum length, L-tube corner platinum length, L-tube inlet horizontal coordinate, and L-tube inlet vertical coordinate.

[0041] The calculation process for the L-tube lead-out quantity Q is as follows:

[0042]

[0043] Where ρ is the density of the molten glass, g is the acceleration due to gravity, and η L To design the average feed viscosity of L-tube, D L The design diameter of tube L is given, where L is the design platinum length of tube L, and FSL1 is the free liquid level height of tube L. 12 To design the platinum length of the L-pipe bend, w is the design width of the overflow brick inlet groove, h is the design height of the overflow brick inlet groove, and Z... h To design the overflow height of the overflow bricks;

[0044] In one feasible embodiment of the present invention, the average feed viscosity η of the designed L-tube is... L for:

[0045] η L =η Lref

[0046] Where, η Lref The average feed viscosity is used as a reference for L-tube.

[0047] In one feasible embodiment of the present invention, the specific calculation formula for the diameter of the L-shaped tube is as follows:

[0048]

[0049] Among them, D L To design the diameter of L-shaped pipe; DLref For reference, L represents the pipe diameter, w is the designed width of the overflow brick inlet groove; h is the designed height of the overflow brick inlet groove, w ref For reference, the width of the overflow brick inlet groove; h ref The height of the overflow brick inlet channel is used as a reference.

[0050] The specific formula for calculating the platinum length of the L-tube design is as follows:

[0051] L = FSL1 + L 12 +L2

[0052] Wherein, L2 is the horizontal platinum length of the designed L-tube;

[0053] The specific formula for calculating the longitudinal platinum length L1 of the designed L-tube is as follows:

[0054] L1 = YL 12 ·cos(45°)+L2

[0055] Where L2 is the horizontal platinum length of the designed L-tube; Y is the vertical coordinate of the inlet of the designed L-tube;

[0056] The specific formula for calculating the transverse platinum length L2 of the designed L-tube is as follows:

[0057]

[0058] Among them, L 2ref For reference, the transverse platinum length of the L-tube;

[0059] The design L-tube corner platinum length L 12 The specific calculation formula is as follows:

[0060]

[0061] Where X is the horizontal coordinate of the inlet of the designed L-tube;

[0062] The specific formula for calculating the horizontal coordinate X of the L-pipe inlet is as follows:

[0063] X = X ref +ΔX

[0064] Among them, X ref For reference, the horizontal coordinate of the L-tube inlet is used, and ΔX is the lateral adjustment amount of the L-tube inlet.

[0065] The specific formula for calculating the vertical coordinate Y of the inlet of the L-tube design is as follows:

[0066] Y = Y ref +(D L -D Lref )

[0067] Among them, Yref For reference, the vertical coordinate of the L-pipe inlet, D L To design the diameter of L-shaped pipe; D Lref For reference, the diameter of tube L;

[0068] The difference between the free liquid level height of the L-tube and the longitudinal platinum length of the L-tube is:

[0069] δ=L1-FSL1≥160

[0070] Wherein, δ is the difference between the free liquid level height of tube L and the longitudinal platinum length of tube L.

[0071] In one feasible embodiment of the present invention, the relevant parameters of the feeding bowl and the feeding pipe specifically include: the feed pipe outlet length, the feeding bowl length, the feeding bowl diameter, the feeding pipe diameter, and the feeding pipe length.

[0072] In a feasible embodiment of the present invention, the designed feed pipe lead-out amount Q satisfies the following formula:

[0073]

[0074] Where ρ is the density of the molten glass, g is the acceleration due to gravity, and η DC To determine the average feed viscosity of the feed pipe, H is the design height of the free liquid level in the feed pipe, L0 is the design length of the feed bowl, and L... DC To design the feed tube length, ΔH is the distance between the designed feed tube and the free liquid surface of the glass in the designed L-tube; D C To design the diameter of the feed pipe;

[0075] The average feed viscosity η of the designed feed pipe DC for:

[0076] η DC =η Dcref

[0077] Where, η DCref The average viscosity of the feed material is used as a reference in the feed pipe.

[0078] In one feasible embodiment of the present invention, the length L0 of the feeding bowl is:

[0079] L0 = L 0ref

[0080] Among them, L 0ref For reference, the length of the feeding bowl is required;

[0081] The diameter of the feeding bowl for:

[0082]

[0083] in, For reference, the diameter of the feeding bowl is used.

[0084] The specific formula for calculating the diameter of the designed feed pipe is as follows:

[0085]

[0086] Among them, D L To design the diameter of L-shaped pipe; D Lref For reference, L represents the pipe diameter; D C For designing the feed pipe diameter; D Cref For reference, the diameter of the feed pipe is used.

[0087] See Figure 2 This invention discloses a design system for stable material supply in a large-capacity overflow system, comprising:

[0088] The acquisition module is used to select a reference overflow feeding system; the overflow feeding system includes a feeding pipe and an L-pipe;

[0089] The L-tube design module is used to design the relevant parameters of the L-tube based on the L-tube pressure loss-flow relationship of the reference overflow feeding system.

[0090] The feed pipe design module is used to design the relevant parameters of the feed bowl and feed pipe based on the pressure loss and flow relationship of the feed pipe in the reference overflow feed system, the height of the free liquid surface in the feed pipe, and the distance between the feed pipe and the L-pipe free liquid surface.

[0091] This invention discloses a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the design method for stable material supply of the large outflow overflow system.

[0092] See Figure 5 This invention discloses a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the design method for stable material supply of a large-volume overflow system.

[0093] Example:

[0094] like Figure 3 and Figure 4 As shown, the overflow system is composed of an overflow brick 1 and a glass melt supply device 3 connected together; an overflow groove 2 is provided in the overflow brick 1, and the bottom of the overflow brick 1 is the root of the overflow brick 1; when the glass substrate is manufactured by molten overflow, in the forming process, the glass melt melted by the glass melting furnace is supplied to the glass melt supply device 3 in the molten overflow forming device, and overflows along the overflow groove 2 through both sides of the overflow brick 1, forming the glass substrate from below the root 4 of the overflow brick 1.

[0095] Overflow forming, also known as natural forming, produces the highest quality glass substrates using a wedge-shaped overflow trough. The stirred and homogenized (physical, chemical, and thermal) molten glass is supplied to the overflow trough via a feed pipe and an L-tube. It then flows through an overflow weir, splitting to both sides and fusing at the root of the overflow brick before being pulled downwards to form a glass substrate of the target thickness. The glass overflow and downward pulling process involves complex structural changes (physical dimensions and molecular level). By establishing relevant kinetic models, the thickness distribution and stress patterns below the overflow surface and root can be revealed. The flow of molten glass in the feed pipe or L-tube depends entirely on the pressure difference of the molten glass. The initial temperature is set higher (relative to the design flow rate temperature), the molten glass viscosity is lower than the design flow rate viscosity, and the glass flow rate is higher than the design flow rate. This provides pipeline pressure, forcing the glass to overcome pipeline friction and flow forward. The final temperature is set to the design flow rate temperature entering the overflow trough, ensuring that the glass enters the overflow trough at the design flow rate and flows into the overflow trough homogeneously and stably. In general, the purpose of the front end is to cool down and provide glass flow pressure, while the purpose of the back end is to provide a homogeneous and stable glass design flow rate.

[0096] The insertion depth of the feed pipe represents the distance from the free surface of the L-tube to the outlet of the feed pipe, and is a process parameter for adjusting the flow rate (outflow) of the overflow system. Increasing the insertion depth of the feed pipe decreases the outflow of the glass substrate, and vice versa. As the molten glass propels from the near end to the far end of the overflow channel, it is driven by mass force and pressure in the direction of travel, overcoming laminar viscous resistance, and flows downwards from the overflow weir. The fluid dynamics equations based on this principle integrate the effects of these forces and form the basis of the overflow channel design. On the vertical overflow plane, the mass force and pressure are sufficiently large, and the viscosity is relatively low, so the influence of lateral surface tension is minimal, resulting in almost no lateral contraction. On the inclined plane, the components of the mass force and pressure along the inclined plane decrease significantly, and the viscosity gradually increases, highlighting the effect of lateral surface tension and producing significant lateral contraction.

[0097] The material distribution starts from the near end of the overflow weir. The glass flow pattern can be controlled by adjusting the inlet and outlet temperatures of the feed pipe and the MSU temperature, as well as their coordination. The near and far ends, surface, and bonding line of the glass substrate have corresponding positional relationships with the cross-sections of the feed pipe and L-tube. Utilizing the feeding and forming relationship, defects (irregular glass, bubbles) in the glass vortex region (such as the top of the feed trough, the junction of the feed pipe and L-tube) can be controlled to be directed to non-critical areas of the glass substrate (such as the near and far edge plates, bonding lines, etc.), minimizing their appearance in the useful areas of the glass substrate (especially the surface), thus preventing defects from periodically affecting the forming quality of the glass substrate. The feeding and forming relationship also allows for control of localized viscosity temperatures in the glass (such as L-tube heaters), providing limited means for controlling the flow pattern of the edge plates and overflow thickness. For example, controlling the local heating power of the feed pipe / L-tube can create temperature differences on the circumferential surface, thereby adjusting the glass flow rate (flow rate) towards the corresponding area of ​​the glass substrate.

[0098] Regarding the stable feeding of the overflow system, the design of the feeding system (especially the feeding pipe) and L-tube system structure is crucial, particularly the diameter and platinum length of the feeding pipe and L-tube. Secondly, the matching relationship between the feeding pipe and L-tube must be considered to provide a greater process margin for adjustments. The design of the feeding pipe and L-tube should achieve stable flow conditions based on the designed outflow and pressure loss correction, ensuring the molten glass is within the L-tube. A certain safety height must be maintained between the free liquid level and the pipe opening. All of these design considerations provide sufficient process means for subsequent stable glass flow, stable flow rate, stable sideplate flow, stable effective surface thickness distribution of the glass substrate, and stable process adjustments.

[0099] In recent years, to improve production line efficiency, glass substrate sizes have become increasingly larger, and lead-out rates have also increased. To meet the demands of higher generations and higher lead-out rates, and especially to ensure the stability of the glass lead plates, a feeding system that matches the overflow system has become one of the core design considerations.

[0100] The design of the L-tube lead-out amount should satisfy the following formula:

[0101]

[0102] Where ρ is the density of the molten glass, g is the acceleration due to gravity, and η L To design the average feed viscosity of L-tube, D L The design diameter of tube L is given, where L is the design platinum length of tube L, and FSL1 is the free liquid level height of tube L. 12 For the design of L-pipe bend length, w is the design overflow brick inlet groove width, h is the design overflow brick inlet groove height, and Z is the design overflow brick inlet groove height. h The overflow height of the overflow brick is designed.

[0103] The designed average feed viscosity for L-tube is:

[0104] η L =η Lref

[0105] Where, η L and η Lref These are the design L-tube average feed viscosity and the reference L-tube average feed viscosity, respectively.

[0106] The specific formula for designing the diameter of L-tube is:

[0107]

[0108] Among them, D L and D Lref These are the design L-pipe diameter and the reference L-pipe diameter, respectively. w and h are the design overflow brick inlet channel width and inlet channel height, respectively. ref and h ref These are the reference overflow brick inlet groove width and inlet groove height, respectively.

[0109] The specific formula for designing the platinum length of the L-tube is:

[0110] L = FSL1 + L 12 +L2

[0111] Where L2 is the horizontal platinum length of the designed L-tube.

[0112] The specific formula for designing the longitudinal platinum length of the L-tube is as follows:

[0113] L1 = YL 12 ·cos(45°)+L2

[0114] Where L2 is the horizontal platinum length of the designed L-tube.

[0115] The specific formula for designing the transverse platinum length of the L-tube is as follows:

[0116]

[0117] Among them, L 2ref For reference, the horizontal platinum length of the L-tube.

[0118] The specific formula for designing the platinum length at the corner of the L-tube is as follows:

[0119]

[0120] The specific formula for designing the horizontal coordinates of the L-tube inlet is:

[0121] X = X ref +ΔX

[0122] Among them, X and X refThese are the horizontal coordinates of the designed L-tube inlet and the reference L-tube inlet, respectively, with ΔX representing the lateral adjustment amount of the L-tube inlet.

[0123] The specific formula for designing the vertical coordinates of the L-tube inlet is:

[0124] Y = Y ref +(D L -D rref )

[0125] Among them, Y and Y ref These are the vertical coordinates of the design L-tube inlet and the reference L-tube inlet, respectively. L and D Lref These are the design L-tube diameter and the reference L-tube diameter, respectively.

[0126] The difference between the free liquid level height of the L-tube and the longitudinal platinum length of the L-tube is designed to be:

[0127] δ=L1-FSL1≥160

[0128] Among them, the δ value ensures the safety of the free liquid surface in the L-tube.

[0129] The design of the feed pipe outlet diameter must satisfy the following formula:

[0130]

[0131] Where ρ is the density of the molten glass, g is the acceleration due to gravity, and η DC To determine the average feed viscosity of the feed pipe, H is the design height of the free liquid level in the feed pipe, L0 is the design length of the feed bowl, and L... DC The design feed pipe length is given, and ΔH is the distance between the design feed pipe and the free liquid surface of the glass in the design L-tube.

[0132] The design parameters for the average feed viscosity, feed bowl length, and feed bowl diameter are as follows:

[0133] η DC =η Dcref

[0134] L0 = L 0ref

[0135]

[0136] Where, η Dc and η Dcref These represent the average feed viscosity of the design feed pipe and the average feed viscosity of the reference feed pipe, respectively, L0 and L 0ref These are the design feed bowl length and the reference feed bowl length, respectively. and These are the design feed bowl diameter and the reference feed bowl diameter, respectively.

[0137] The specific formula for designing the diameter of the feed pipe is:

[0138]

[0139] Among them, D L and D Lref D represents the design L-tube diameter and the reference L-tube diameter, respectively. c and D Cref These are the design feed pipe diameter and the reference feed pipe diameter, respectively.

[0140] Table 1 shows the reference overflow feeding system and the design overflow feeding system structure and related parameters of this embodiment.

[0141] Table 1: Structure and related parameters of the reference overflow feeding system and the designed overflow feeding system in this embodiment.

[0142]

[0143] The method in this embodiment provides a more scientific design standard and evaluation standard for the stable feeding design of large-output overflow systems, which can meet the needs of higher generations and higher output.

[0144] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0145] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0146] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0147] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0148] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A design method for stable material supply in a large-output overflow system, characterized in that, Includes the following steps: A reference overflow feeding system is selected; the overflow feeding system includes a feeding pipe and an L-pipe; The relevant parameters of the L-tube are designed based on the pressure loss and flow rate relationship of the L-tube in the reference overflow feeding system. Based on the pressure loss-flow relationship of the feed pipe in the reference overflow feed system, the height of the free liquid surface in the feed pipe, and the distance between the feed pipe and the L-pipe, design the relevant parameters of the feed bowl and the feed pipe. The relevant parameters of the L-tube specifically include: L-tube lead-out amount, L-tube diameter, L-tube platinum length, L-tube longitudinal platinum length, L-tube transverse platinum length, L-tube corner platinum length, L-tube inlet horizontal coordinate, and L-tube inlet vertical coordinate; design L-tube lead-out amount. The calculation formula is as follows: in, The density of the molten glass, It is the acceleration due to gravity. To design the average feed viscosity of L-tube, To design the diameter of L-shaped pipe, To design the L-shaped platinum tube, To design the free liquid level height of the L-tube, To design the platinum length of the L-shaped tube corner, To design the width of the overflow brick inlet channel, To design the overflow brick inlet channel height, To design the overflow height of the overflow bricks; The average feed viscosity of the L-tube design for: in, The average feed viscosity is referenced for tube L; The specific formula for calculating the diameter of the L-tube in the design is as follows: in, To design the diameter of the L-shaped pipe; For reference, the diameter of tube L, To design the width of the overflow brick inlet groove; To design the overflow brick inlet channel height, For reference, the width of the overflow brick inlet groove; For reference, the height of the overflow brick inlet channel; The specific formula for calculating the platinum length of the L-tube design is as follows: in, To design the transverse platinum length of the L-tube; The design L-tube longitudinal platinum length The specific calculation formula is as follows: in, To design the transverse platinum length of the L-tube; To design the vertical coordinates of the L-tube inlet; The design L-tube has a transverse platinum length. The specific calculation formula is as follows: in, For reference, the transverse platinum length of the L-tube; The design L-tube corner platinum length The specific calculation formula is as follows: in, To design the horizontal coordinates of the L-tube inlet; The horizontal coordinate of the L-tube inlet of the design The specific calculation formula is as follows: in, For reference, the horizontal coordinates of the L-pipe inlet, This refers to the lateral adjustment amount at the L-tube inlet; The vertical coordinate of the L-tube inlet in the design The specific calculation formula is as follows: in, For reference, the vertical coordinate of the L-pipe inlet, To design the diameter of the L-shaped pipe; For reference, the diameter of tube L; The difference between the free liquid level height of the L-tube and the longitudinal platinum length of the L-tube is: in, This is the difference between the free liquid level height of tube L and the longitudinal platinum length of tube L.

2. The design method for stable material supply in a large-capacity overflow system according to claim 1, characterized in that, The relevant parameters of the feeding bowl and feeding pipe specifically include: feeding pipe lead-out amount, feeding bowl length, feeding bowl diameter, feeding pipe diameter, and feeding pipe length.

3. The design method for stable material supply of a large-capacity overflow system according to claim 2, characterized in that, Design feed pipe lead-out amount Satisfy the following formula: in, The density of the molten glass, It is the acceleration due to gravity. To design the average feed viscosity of the feed pipe, To design the free liquid level height in the feed pipe, To design the length of the feeding bowl, To design the length of the feed pipe, The distance between the design feed pipe and the design L-tube glass free liquid surface; To design the diameter of the feed pipe; The average feed viscosity of the designed feed pipe for: in, The average viscosity of the feed material is used as a reference in the feed pipe.

4. The design method for stable material supply of a large-capacity overflow system according to claim 2, characterized in that, The length of the feeding bowl for: in, For reference, the length of the feeding bowl; The diameter of the feeding bowl for: in, For reference, the diameter of the feeding bowl is used. The specific formula for calculating the diameter of the designed feed pipe is as follows: in, To design the diameter of the L-shaped pipe; For reference, the diameter of tube L; To design the diameter of the feed pipe; For reference, the diameter of the feed pipe.

5. A design system for stable material supply in a large-capacity overflow system, characterized in that, A design method for stable material supply in a large-capacity overflow system according to any one of claims 1 to 4 includes: The acquisition module is used to select a reference overflow feeding system; the overflow feeding system includes a feeding pipe and an L-pipe; The L-tube design module is used to design the relevant parameters of the L-tube based on the L-tube pressure loss-flow relationship of the reference overflow feeding system. The feed pipe design module is used to design the relevant parameters of the feed bowl and feed pipe based on the pressure loss and flow relationship of the feed pipe in the reference overflow feed system, the height of the free liquid surface in the feed pipe, and the distance between the feed pipe and the L-pipe free liquid surface.

6. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method as described in any one of claims 1-5.

7. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1-5.

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