Tin bath atmosphere control system and glass manufacturing apparatus

Abstract

The utility model discloses a kind of tin bath protective gas control system and glass production equipment, it is related to glass production equipment technical field, wherein, tin bath protective gas control system is applied to tin bath, multiple Beis are equipped in tin bath, tin bath protective gas control system includes supply gas source, gas supply pipeline, regulating valve assembly and controller, gas supply pipeline is equipped with multiple, one end of each gas supply pipeline is communicated with gas supply source, the other end of each gas supply pipeline is communicated with each Beis;The regulating valve assembly is equipped with multiple, each regulating valve assembly is arranged in each gas supply pipeline, to control the gas flow of protective gas entering the Beis;The technical scheme of the utility model provides controller and regulating valve assembly to the protective gas that enters tin bath from gas supply pipeline accurately regulate and control, so, the gas flow of protective gas entering tin bath can be more flexible and accurately controlled, to reduce the defect generation in tin bath, improve glass yield.

Description

Technical Field

[0001] This utility model relates to the field of glass production equipment technology, and in particular to a tin bath protective gas control system and glass production equipment. Background Technology

[0002] In the process of producing glass using the float glass process, a protective gas (usually a mixture of nitrogen and hydrogen) is applied in the tin bath as a key process parameter to prevent oxidation of the molten tin and reduce the residence and condensation of tin vapor.

[0003] In current production practices, a single main gas pipe is often used to supply gas to the tin bath, which is then supplied through multiple branch pipes. Because the content of the protective gas entering the tin bath cannot be precisely controlled, the error in the amount of protective gas entering the tin bath is relatively large, and the gas in the tin bath is unstable, which seriously affects the yield of finished glass. Utility Model Content

[0004] The main purpose of this invention is to propose a tin bath protective gas control system, which aims to precisely regulate the protective gas entering the tin bath from the gas supply pipeline through a controller and regulating valve assembly. In this way, the gas flow rate of the protective gas entering the tin bath can be controlled more flexibly and accurately, and the pressure and flow rate of the gas supply can be kept stable, thereby reducing the generation of defects in the tin bath and improving the glass yield.

[0005] To achieve the above objectives, the tin bath protective gas control system proposed in this utility model includes:

[0006] A gas supply source is provided, and the gas supply source is equipped with a protective gas.

[0007] The gas supply pipeline is provided in multiple ways, with one end of each gas supply pipeline connected to the gas source and the other end of each gas supply pipeline connected to each of the shell areas.

[0008] A regulating valve assembly, wherein multiple regulating valve assemblies are provided, each of the regulating valve assemblies being located in each of the gas supply pipelines, to control the gas flow rate of the protective gas entering the shell area;

[0009] A controller, which is electrically connected to the regulating valve assembly.

[0010] In one embodiment, each of the gas supply lines includes a first gas supply line and a second gas supply line, one end of the first gas supply line is connected to the gas supply source, one end of the second gas supply line is connected to the other end of the first gas supply line, and the other end of the second gas supply line is connected to the shell area.

[0011] Each of the regulating valve assemblies includes a first regulating valve and a second regulating valve. The first regulating valve is located at the end of the first gas supply pipeline away from the gas supply source to regulate the outlet pressure of the first gas supply pipeline. The second regulating valve is located at the end of the second gas supply pipeline away from the first gas supply pipeline to regulate the flow rate of protective gas entering the second gas supply pipeline.

[0012] In one embodiment, the first regulating valve is a pressure regulating valve;

[0013] And / or, the second regulating valve is a pneumatic pressure regulating valve.

[0014] In one embodiment, the tin bath protective gas control system further includes three first on / off valves, two of which are electrically connected to the controller, wherein the two first on / off valves are spaced apart in the first gas supply pipeline to open and close the first gas supply pipeline, and the first regulating valve is located between the two first on / off valves.

[0015] The tin bath protective gas control system further includes a first bypass pipe, one end of which is connected to the first gas supply pipe near one of the first on / off valves, and the other end of which is connected to the first gas supply pipe near another of the first on / off valves, wherein one of the first on / off valves is located in the first bypass pipe.

[0016] In one embodiment, the tin bath protective gas control system further includes a flow meter electrically connected to the controller. The flow meter is located at one end of the second gas supply pipe near the first gas supply pipe to measure the flow rate of the protective gas passing through the second gas supply pipe. The second regulating valve is located at one end of the flow meter.

[0017] In one embodiment, the tin bath protective gas control system further includes three second on / off valves, wherein two second on / off valves are spaced apart in the second gas supply pipeline, and the flow meter and the second regulating valve are located between the two second on / off valves;

[0018] The tin bath protective gas control system further includes a second bypass pipe, one end of which is connected to the second gas supply pipe near one end of one of the second on / off valves, and the other end of which is connected to the second gas supply pipe near one end of another second on / off valve, wherein one of the second on / off valves is located in the second bypass pipe.

[0019] In one embodiment, the first on / off valve and the second on / off valve are either throttle valves or ball valves.

[0020] In one embodiment, the solder bath protective gas control system further includes a pressure sensor, the controller is electrically connected to the pressure sensor, and the pressure sensor is located at one end of the second gas supply pipe near the solder bath to detect the pressure of the protective gas entering the solder bath.

[0021] In one embodiment, the tin bath protective gas control system further includes a connecting pipe, one end of which is connected to the first gas supply pipe, and multiple second gas supply pipes are provided, which are arranged at intervals along the length of the connecting pipe.

[0022] This utility model also proposes a glass production equipment, which includes a tin bath and a tin bath protective gas control system as described in any of the above.

[0023] The technical solution of this utility model uses a controller and regulating valve assembly to precisely control the protective gas entering the tin bath from the gas supply pipeline. In this way, the flow rate of the protective gas entering the tin bath can be controlled more flexibly and accurately, and the pressure and flow rate of the gas supply can be kept stable, thereby reducing the generation of defects in the tin bath and improving the glass yield. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 A schematic diagram of an embodiment of the tin bath protective gas control system provided by this utility model;

[0026] Figure 2 A schematic diagram of the connection structure of the gas supply source, the first gas supply pipeline, and the second gas supply pipeline in an embodiment of the tin bath protective gas control system provided by this utility model.

[0027] Explanation of icon numbers:

[0028] 100. Solder bath protective gas control system; 1. Gas supply source; 2. Gas supply pipeline; 21. First gas supply pipeline; 22. Second gas supply pipeline; 3. Regulating valve assembly; 31. First regulating valve; 32. Second regulating valve; 6. First on / off valve; 7. First bypass pipeline; 8. Flow meter; 9. Second bypass pipeline; 11. Pressure sensor; 12. Connecting pipeline; 13. Second on / off valve; 200. Solder bath 0.

[0029] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] This invention proposes a tin bath protective gas control system, which aims to precisely regulate the protective gas entering the tin bath from the gas supply pipeline through a controller and regulating valve assembly. This allows for more flexible and precise control of the gas flow rate into the tin bath, ensuring stable gas pressure and flow, thereby reducing defects in the tin bath and improving the glass yield.

[0034] Please see Figure 1 and Figure 2 In one embodiment of this utility model, the solder bath protective gas control system 100 includes:

[0035] A gas supply source is provided, and the gas supply source is equipped with a protective gas.

[0036] Gas supply pipeline 2, wherein multiple gas supply pipelines 2 are provided, one end of each gas supply pipeline 2 is connected to the gas supply source, and the other end of each gas supply pipeline 2 is connected to each of the shell areas;

[0037] A regulating valve assembly 3 is provided, and each regulating valve assembly 3 is provided in each gas supply pipeline 2 to control the gas flow rate of the protective gas entering the shell area;

[0038] A controller, which is electrically connected to the regulating valve assembly 3.

[0039] As is known, the temperature varies in different areas of the tin bath, such as the high-temperature zone, the medium-temperature zone, and the low-temperature zone. Each zone requires a different amount of protective gas. Therefore, in order to accurately control the amount of protective gas entering each zone, the tin bath is divided into multiple bays, and each gas supply pipeline is connected to each bay. This allows for precise control of the gas flow rate of the protective gas entering the bay and ensures the stability of the gas supply pressure and flow rate, thereby reducing defects in the tin bath and improving the glass yield.

[0040] In this embodiment, the solder bath protective gas control system 100 includes a gas supply source and multiple gas supply pipelines 2. The gas supply source contains protective gas, which is a mixture of N2 and H2. One end of each gas supply pipeline 2 is connected to the gas supply source, and the other end of each gas supply pipeline 2 is connected to the corresponding bay area of ​​the solder bath. That is, the protective gas in the gas supply source enters the solder bath through multiple gas supply pipelines 2.

[0041] Specifically, the tin bath protective gas control system also includes a regulating valve assembly 3 and a controller. Multiple regulating valve assemblies 3 are provided, each located on each gas supply line 2, to regulate the outlet pressure of the gas supply line 2, ensuring stable pressure of the protective gas in the gas supply line 2, and to regulate the flow rate of the protective gas entering the gas supply line 2, so that the flow rate of the protective gas is adjusted to a set amount, ensuring stable flow. Furthermore, the controller is electrically connected to the regulating valve assembly 3. Through the controller and the regulating valve assembly 3, the protective gas entering the tin bath is precisely controlled via the gas supply line 2. This allows for more flexible and precise control of the gas flow rate entering the tin bath, ensuring stable pressure and flow, thereby reducing defects in the tin bath and improving the glass yield.

[0042] In one embodiment, each of the gas supply lines 2 includes a first gas supply line 21 and a second gas supply line 22. One end of the first gas supply line 21 is connected to the gas supply source, one end of the second gas supply line 22 is connected to the other end of the first gas supply line 21, and the other end of the second gas supply line 22 is connected to the shell area.

[0043] Each of the regulating valve assemblies 3 includes a first regulating valve 31 and a second regulating valve 32. The first regulating valve 31 is located at the end of the first gas supply pipe 21 away from the gas supply source to regulate the outlet pressure of the first gas supply pipe 21. The second regulating valve 32 is located at the end of the second gas supply pipe 22 away from the first gas supply pipe 21 to regulate the flow rate of the protective gas entering the second gas supply pipe 22. The first regulating valve 31 and the second regulating valve 32 are used to precisely control the gas content of the protective gas entering the tin bath, so as to ensure the stability of the gas supply pressure and flow rate.

[0044] In this embodiment, in order to facilitate the connection between the gas supply pipeline 2, the gas supply source and the solder bath, each gas supply pipeline 2 includes a first gas supply pipeline 21 and a second gas supply pipeline 22. One end of the first gas supply pipeline 21 is connected to the gas supply source, one end of the second gas supply pipeline 22 is connected to the other end of the first gas supply pipeline 21, and the other end of the second gas supply pipeline 22 is connected to the shell area. That is, the protective gas of the gas supply source enters the solder bath in sequence through the first gas supply pipeline 21 and the second gas supply pipeline 22.

[0045] Meanwhile, each regulating valve assembly 3 also includes a first regulating valve 31 and a second regulating valve 32. The first regulating valve 31 is located at the end of the first gas supply pipe 21 away from the gas supply source to regulate the outlet pressure of the first gas supply pipe 21. The second regulating valve 32 is located at the end of the second gas supply pipe 22 away from the first gas supply pipe 21 to regulate the flow rate of the protective gas entering the second gas supply pipe 22. Furthermore, the controller is electrically connected to the first regulating valve 31 and the second regulating valve 32. Through the controller and the first regulating valve 31 and the second regulating valve 32, the protective gas entering the solder bath can be precisely regulated by the first gas supply pipe 21 and the second gas supply pipe 22, respectively. In this way, the flow rate of the protective gas entering the solder bath can be controlled more flexibly and accurately, and the pressure and flow rate of the gas supply can be kept stable, thereby reducing the generation of defects in the solder bath and improving the glass yield.

[0046] In one implementation, please refer to Figure 1 and Figure 2 The first regulating valve 31 is a pressure regulating valve, which makes it easy to control the pressure of the first gas supply pipeline 21 and ensure the stability of the protective gas pressure of the first gas supply pipeline 21.

[0047] Furthermore, the second regulating valve 32 is a pneumatic pressure regulating valve, which regulates the flow rate of protective gas into the second gas supply pipeline 22 so that the flow rate of protective gas is regulated to the set amount to ensure stable flow.

[0048] In one implementation, please refer to Figure 1 and Figure 2The tin bath protective gas control system 100 also includes three first on / off valves 6. Two of the first on / off valves 6 are electrically connected to the controller. The two first on / off valves 6 are spaced apart from the first gas supply pipeline 21 to switch the first gas supply pipeline 21 on and off. The first regulating valve 31 is located between the two first on / off valves 6.

[0049] The tin bath protective gas control system 100 also includes a first bypass pipe 7. One end of the first bypass pipe 7 is connected to the first gas supply pipe 21 near one of the first on / off valves 6, and the other end of the first bypass pipe 7 is connected to the first gas supply pipe 21 near another of the first on / off valves 6. One of the first on / off valves 6 is located in the first bypass pipe 7. By setting the first bypass pipe 7, it is convenient for staff to perform maintenance or replacement operations on the first regulating valve 31.

[0050] In this embodiment, the tin bath protective gas control system 100 also includes three first on / off valves 6. Two of the first on / off valves 6 are electrically connected to the controller. The two first on / off valves 6 are spaced apart from the first gas supply pipeline 21 to open and close the first gas supply pipeline 21. The first regulating valve 31 is located between the two first on / off valves 6. That is, when the two first on / off valves 6 on both sides of the first regulating valve 31 are closed, the protective gas cannot enter the first regulating valve 31. At this time, the first regulating valve 31 can be repaired or replaced. The operation is simple and practical.

[0051] Specifically, to ensure normal airflow through the first gas supply pipe 21, the tin bath protective gas control system 100 also includes a first bypass pipe 7. One end of the first bypass pipe 7 is connected to the end of the first gas supply pipe 21 near one of the first on-off valves 6, and the other end of the first bypass pipe 7 is connected to the end of the first gas supply pipe 21 near the other first on-off valve 6. One of the first on-off valves 6 is located in the first bypass pipe 7. That is, when both first on-off valves 6 on both sides of the first regulating valve 31 are closed, the protective gas will enter the second gas supply pipe 22 through the first bypass pipe 7. In this way, even if the first regulating valve 31 is repaired or replaced, the normal delivery of the protective gas can be ensured. Of course, after the first regulating valve 31 is repaired or replaced, the two first on-off valves 6 on both sides of the first regulating valve 31 are reopened, and the first on-off valve 6 of the first bypass pipe 7 is closed. The protective gas will then flow through the first regulating valve 31 to the second gas supply pipe 22.

[0052] In one implementation, please refer to Figure 1 and Figure 2The tin bath protective gas control system 100 also includes a flow meter 8, which is electrically connected to the controller. The flow meter 8 is located at one end of the second gas supply pipe 22 near the first gas supply pipe 21 to measure the flow rate of the protective gas passing through the second gas supply pipe 22. The second regulating valve 32 is located at one end of the flow meter 8.

[0053] In this embodiment, the solder bath protective gas control system 100 also includes a flow meter 8, which is electrically connected to the controller. The flow meter 8 is located at one end of the second gas supply pipe 22 near the first gas supply pipe 21 to measure the flow rate of the protective gas passing through the second gas supply pipe 22. A second regulating valve 32 is located at one end of the flow meter 8. When the flow rate passing through the flow meter 8 exceeds the flow rate set by the flow meter 8, the controller controls the second regulating valve 32 to adjust the flow rate passing through the second regulating valve 32, thereby ensuring that the protective gas enters the solder bath 200 at the set flow rate.

[0054] In one implementation, please refer to Figure 1 and Figure 2 The tin bath protective gas control system 100 also includes three second on / off valves 13, wherein two second on / off valves 13 are spaced apart in the second gas supply pipeline 22, and the flow meter 8 and the second regulating valve 32 are located between the two second on / off valves 13.

[0055] The tin bath protective gas control system 100 further includes a second bypass pipe 9, one end of which is connected to the second gas supply pipe 22 near one of the second on / off valves 13, and the other end of which is connected to the second gas supply pipe 22 near another second on / off valve 13, wherein one of the second on / off valves 13 is located in the second bypass pipe 9.

[0056] In this embodiment, the tin bath protective gas control system 100 also includes three second on / off valves 13, wherein two second on / off valves 13 are spaced apart from each other in the second gas supply pipeline 22 to open and close the second gas supply pipeline 22, and the flow meter 8 and the second regulating valve 32 are located between the two second on / off valves 13; that is, when the two second on / off valves 13 on both sides of the second regulating valve 32 are closed, the protective gas cannot enter the second regulating valve 32, and at this time, the second regulating valve 32 can be repaired or replaced, which is simple and practical to operate.

[0057] Specifically, to ensure the normal flow of air through the second air supply pipe 22, the solder bath protective gas control system 100 also includes a second bypass pipe 9. One end of the second bypass pipe 9 is connected to the end of the second air supply pipe 22 near one of the second on-off valves 13, and the other end of the second bypass pipe 9 is connected to the end of the second air supply pipe 22 near the other second on-off valve 13. One of the second on-off valves 13 is located in the second bypass pipe 9. That is, when both second on-off valves 13 on both sides of the second regulating valve 32 are closed, the protective gas will enter the solder bath 200 through the second bypass pipe 9. In this way, even if the second regulating valve 32 is repaired or replaced, the normal supply of protective gas can be ensured. Of course, after the second regulating valve 32 is repaired or replaced, the two second on-off valves 13 on both sides of the second regulating valve 32 are reopened, and the second on-off valve 13 of the second bypass pipe 9 is closed. The protective gas will then flow into the solder bath 200 through the second regulating valve 32.

[0058] In one implementation, please refer to Figure 1 and Figure 2 The first on / off valve 6 and the second on / off valve 13 are either throttle valves or ball valves. This configuration ensures that the flow of protective gas can be smoothly cut off, facilitating the maintenance or replacement of the first regulating valve 31 and the second regulating valve 32.

[0059] In one implementation, please refer to Figure 1 and Figure 2 The tin bath protective gas control system 100 also includes an alarm, which is electrically connected to the controller. When the flow meter 8 outputs a current flow value that exceeds a certain limit, the controller controls the alarm to sound an alarm and prompt manual intervention. It should be noted that the alarm is existing technology and is not limited in this application.

[0060] In one implementation, please refer to Figure 1 and Figure 2 The solder bath protective gas control system 100 also includes a pressure sensor 11. The controller is electrically connected to the pressure sensor 11. The pressure sensor 11 is located at one end of the second gas supply pipe 22 near the solder bath 200 to detect the pressure of the protective gas entering the solder bath 200 and transmit the relevant signal to the controller. When the pressure of the protective gas passing through the pressure sensor 11 exceeds the pressure set by the pressure sensor 11, the controller issues an alarm to prompt manual intervention.

[0061] In one implementation, please refer to Figure 1 and Figure 2The tin bath protective gas control system 100 also includes a connecting pipe 12, one end of which is connected to the first gas supply pipe 21. Multiple second gas supply pipes 22 are provided, and the multiple second gas supply pipes 22 are arranged at intervals along the length of the connecting pipe 12. By setting multiple second gas supply pipes 22, the amount of protective gas entering the tin bath 200 is ensured to be stable and uniform, thereby ensuring the forming quality of the glass and improving the glass yield.

[0062] This utility model also proposes a glass production equipment, which includes a tin bath 200 and a tin bath protective gas control system 100. The specific structure of the tin bath protective gas control system 100 is as described in the above embodiments. Since this glass production equipment adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0063] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A tin bath protective gas control system, characterized in that, Applied to a solder bath, wherein multiple spaced-apart regions are formed within the solder bath, the solder bath protective gas control system includes: A gas supply source is provided, and the gas supply source is equipped with a protective gas. The gas supply pipeline is provided in multiple ways, with one end of each gas supply pipeline connected to the gas supply source and the other end of each gas supply pipeline connected to each of the shell areas. A regulating valve assembly, wherein multiple regulating valve assemblies are provided, each of the regulating valve assemblies being located in each of the gas supply pipelines, to control the gas flow rate of the protective gas entering the shell area; A controller, which is electrically connected to the regulating valve assembly.

2. The tin bath protective gas control system as described in claim 1, characterized in that, Each of the gas supply lines includes a first gas supply line and a second gas supply line, one end of the first gas supply line is connected to the gas supply source, one end of the second gas supply line is connected to the other end of the first gas supply line, and the other end of the second gas supply line is connected to the shell area. Each of the regulating valve assemblies includes a first regulating valve and a second regulating valve. The first regulating valve is located at the end of the first gas supply pipeline away from the gas supply source to regulate the outlet pressure of the first gas supply pipeline. The second regulating valve is located at the end of the second gas supply pipeline away from the first gas supply pipeline to regulate the flow rate of protective gas entering the second gas supply pipeline.

3. The tin bath protective gas control system as described in claim 2, characterized in that, The first regulating valve is a pressure regulating valve; And / or, the second regulating valve is a pneumatic pressure regulating valve.

4. The tin bath protective gas control system as described in claim 3, characterized in that, The tin bath protective gas control system also includes three first on / off valves, two of which are electrically connected to the controller. The two first on / off valves are spaced apart in the first gas supply pipeline to open and close the first gas supply pipeline. The first regulating valve is located between the two first on / off valves. The tin bath protective gas control system further includes a first bypass pipe, one end of which is connected to the first gas supply pipe near one of the first on / off valves, and the other end of which is connected to the first gas supply pipe near another of the first on / off valves, wherein one of the first on / off valves is located in the first bypass pipe.

5. The tin bath protective gas control system as described in claim 4, characterized in that, The tin bath protective gas control system also includes a flow meter, which is electrically connected to the controller. The flow meter is located at one end of the second gas supply pipeline near the first gas supply pipeline to measure the flow rate of the protective gas passing through the second gas supply pipeline. The second regulating valve is located at one end of the flow meter.

6. The solder bath protective gas control system as described in claim 5, characterized in that, The tin bath protective gas control system also includes three second on / off valves, wherein two second on / off valves are spaced apart in the second gas supply pipeline, and the flow meter and the second regulating valve are located between the two second on / off valves; The tin bath protective gas control system further includes a second bypass pipe, one end of which is connected to the second gas supply pipe near one end of one of the second on / off valves, and the other end of which is connected to the second gas supply pipe near one end of another second on / off valve, wherein one of the second on / off valves is located in the second bypass pipe.

7. The solder bath protective gas control system as described in claim 6, characterized in that, The first on / off valve and the second on / off valve are either throttle valves or ball valves.

8. The solder bath protective gas control system as described in any one of claims 2 to 7, characterized in that, The solder bath protective gas control system also includes a pressure sensor. The controller is electrically connected to the pressure sensor, which is located at one end of the second gas supply pipe near the solder bath to detect the pressure of the protective gas entering the solder bath.

9. The solder bath protective gas control system as described in any one of claims 2 to 7, characterized in that, The tin bath protective gas control system also includes a connecting pipe, one end of which is connected to the first gas supply pipe. Multiple second gas supply pipes are provided, and the multiple second gas supply pipes are arranged at intervals along the length of the connecting pipe.

10. A glass production equipment, characterized in that, The glass production equipment includes a tin bath and a tin bath protective gas control system as described in any one of claims 1-9.

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