Combustion system for glass substrate
By introducing a compressed air pipeline connected to an oxygen pipeline into the glass substrate combustion system, and using a solenoid valve to control the compressed air cooling torch, the stability and precision issues of the melting process in the production of ultra-thin flexible glass were solved, achieving equipment safety protection and production stability.
Patent Information
- Application Number
- CN202423151432.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-19
AI Technical Summary
Maintaining long-term stability in the melting process of batch materials during glass substrate production is crucial, especially given the high precision requirements of the melting and clarifying process and the design challenges of the furnace combustion system in the production of ultra-thin flexible glass.
A compressed air line is added to the combustion system of the glass substrate and connected to the oxygen line. The compressed air is delivered to the burner for cooling when combustion stops, controlled by a solenoid valve, to ensure the burner is cooled and prevent the equipment from being damaged due to excessive temperature.
The cooling mechanism of the compressed air pipeline improves the stability of the combustion system and the precise control of the melting process, avoids equipment damage caused by excessively high burner temperature, and enhances production stability and safety.
Smart Images
Figure CN223674497U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of glass substrate production, and in particular to a combustion system for glass substrate. BACKGROUND
[0002] In the production of optoelectronic display glass substrates, such as OLED and LTPS glass substrates, and ultra-thin flexible glass substrates with a thickness less than 0.1 mm, the glass mixture is first put into a kiln for high-temperature melting by the overflow downdraw method. After stirring and clarifying through a platinum channel, the glass flows into a forming furnace and is formed into a glass ribbon after overflowing through overflow bricks and being drawn down. The glass ribbon is then cut into semi-finished products. Ultra-thin flexible glass has good bending properties, good transparency, heat resistance, and high hardness, but is more difficult to produce. The batch melting of optoelectronic display glass substrates, especially ultra-thin flexible glass, is difficult, and the melting and clarifying process requires high precision. The melting process requires long-term stability, and the design of the combustion system of the kiln is a difficulty. CONTENT OF THE UTILITY MODEL
[0003] One technical problem to be solved by the present disclosure is how to maintain the long-term stability of the batch melting process during the production of glass substrates.
[0004] To solve the above technical problem, the present disclosure provides a combustion system for glass substrate, comprising an oxygen pipeline for conveying oxygen, a fuel gas pipeline for conveying fuel gas, and a burner gun located at the merging point of the output end of the oxygen pipeline and the output end of the fuel gas pipeline. The mixed gas of oxygen and fuel gas is burned through the burner gun. The combustion system further comprises a compressed air pipeline connected to the oxygen pipeline, and an electromagnetic valve provided on the compressed air pipeline. When the combustion system stops burning, the electromagnetic valve is opened to convey compressed air to the oxygen pipeline, thereby cooling the burner gun.
[0005] In some embodiments, the oxygen pipeline comprises an oxygen main pipeline, an oxygen branch pipeline, an oxygen bypass pipeline, and an oxygen total pipeline; the fuel gas pipeline comprises a fuel gas main pipeline, a fuel gas branch pipeline, a fuel gas bypass pipeline, and a fuel gas total pipeline; and the compressed air pipeline comprises a compressed air main pipeline and a compressed air total pipeline.
[0006] In some embodiments, the combustion system further comprises a pressure switch disposed on the oxygen total pipeline and the fuel gas total pipeline, for setting the safe pressure range of the gas in the fuel gas pipeline and the oxygen pipeline; and a pressure detection device disposed on the oxygen total pipeline and the fuel gas total pipeline, for detecting the gas pressure in the oxygen pipeline and the fuel gas pipeline and feeding back the detected gas pressure to the combustion system.
[0007] In some embodiments, the combustion system further comprises: flow meters arranged on the oxygen pipeline, the gas branch pipeline, the gas pipeline and the compressed air pipeline, for detecting the flow of the gas in the gas pipeline, the oxygen pipeline and the compressed air pipeline, and feeding back the detected gas flow to the combustion system.
[0008] In some embodiments, the combustion system further comprises: cut-off valves arranged on the gas main pipeline and the oxygen main pipeline, which are closed to cut off the gas flow in the gas pipeline and the oxygen pipeline when the gas pressure in the gas pipeline and the oxygen pipeline exceeds the safe pressure range set by the pressure switch, and which are opened to allow the gas flow in the gas pipeline and the oxygen pipeline when the combustion system is running normally; and actuators arranged on the gas branch pipeline and the oxygen branch pipeline, which adjust the opening degree of the actuators according to the gas flow value detected by the flow meters to adjust the gas flow in the gas branch pipeline and the oxygen branch pipeline, and which are closed when the gas pressure in the gas pipeline and the oxygen pipeline exceeds the safe pressure range set by the pressure switch.
[0009] In some embodiments, the combustion system further comprises: ball valves arranged on the oxygen main pipeline, the oxygen branch pipeline, the oxygen bypass pipeline, the gas main pipeline, the gas branch pipeline, the gas bypass pipeline and the compressed air main pipeline, for adjusting the gas flow, wherein the ball valves on the oxygen main pipeline, the oxygen branch pipeline, the gas main pipeline, the gas branch pipeline and the compressed air main pipeline are opened, and the ball valves on the oxygen bypass pipeline and the gas bypass pipeline are closed when the combustion system is running normally; and needle valves arranged between the oxygen bypass pipeline and the oxygen branch pipeline, between the gas bypass pipeline and the gas branch pipeline, and on the compressed air main pipeline, for adjusting the gas flow, wherein the needle valves between the oxygen bypass pipeline and the oxygen branch pipeline, between the gas bypass pipeline and the gas branch pipeline are closed, and the needle valve on the compressed air main pipeline is opened when the combustion system is running normally.
[0010] In some embodiments, the combustion system further comprises one-way valves arranged on the oxygen branch pipeline, between the oxygen branch pipeline and the oxygen bypass pipeline, and between the gas branch pipeline and the gas bypass pipeline, for ensuring the one-way flow of the gas and preventing the backflow of different gases in the pipelines.
[0011] In some embodiments, the compressed air main pipeline is provided with two output ends, which are respectively connected to the output ends of the oxygen branch pipeline.
[0012] In some embodiments, a ball valve and a one-way valve are further arranged in front of the lance.
[0013] In some embodiments, when the combustion system is abnormal, switch to the bypass mode: the ball valve on the oxygen bypass path and the gas bypass path is opened, the ball valve on the oxygen branch path and the gas branch path is closed; the needle valve between the oxygen bypass path and the oxygen branch path, between the gas bypass path and the gas branch path is opened; and the ball valve on the compressed air main path is closed.
[0014] Through the above technical solution, the combustion system for glass substrates provided by the present disclosure adds a compressed air path to the existing combustion system. By connecting the compressed air path with the oxygen path, the compressed air is input into the torch through the output end of the oxygen path, ensuring that the torch is cooled in time and optimizing the cooling state, thereby avoiding damage to the equipment due to the high temperature of the torch when the combustion system fails, and effectively improving the stability of the batch melting process and the precise control of the melting process. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.
[0016] Figure 1 is a structural schematic diagram of the combustion system for glass substrates disclosed by the embodiments of the present disclosure;
[0017] Figure 2 is a structural schematic diagram of the compressed air path disclosed by the embodiments of the present disclosure;
[0018] Figure 3 is a structural schematic diagram of the kiln working principle disclosed by the embodiments of the present disclosure;
[0019] Figure 4 is a flowchart of the combustion system switching to the bypass mode disclosed by the embodiments of the present disclosure;
[0020] Figure 5 is a flowchart of the combustion system switching back to the branch gas supply mode disclosed by the embodiments of the present disclosure.
[0021] BRIEF DESCRIPTION OF DRAWINGS
[0022] 1, oxygen main pipeline; 2, fuel gas main pipeline; 3, compressed air main pipeline; 4, oxygen bypass pipeline; 5, fuel gas bypass pipeline; 6, cut-off valve; 7, ball valve; 8, needle valve; 9, flowmeter; 10, actuator; 11, check valve; 12, pressure switch; 13, pressure detection device; 14, temperature detection device; 15, pressure gauge; 16, solenoid valve; 17, pressure reducing valve; 18, oxygen main pipeline; 19, fuel gas main pipeline; 20, oxygen branch pipeline; 21, fuel gas branch pipeline; 22, compressed air main pipeline; 23, oxygen supply source; 24, fuel gas supply source; 25, compressed air supply source; 26, torch; 27, other oxygen branch pipeline; 28, other fuel gas branch pipeline; 29, other compressed air branch pipeline; 30, charging port; 31, material mountain; 32, electrode brick; 33, glass liquid level. DETAILED DESCRIPTION
[0023] The embodiments of the present disclosure will be described in further detail below with reference to the drawings and examples. The detailed description and drawings of the following examples are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure, and the present disclosure can be implemented in many different forms, not limited to the specific examples disclosed herein, but includes all technical solutions falling within the scope of the claims.
[0024] The present disclosure provides these examples in order to make the present disclosure thorough and complete, and fully express the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specified, the relative arrangement of components and steps, the composition of materials, numerical expressions and values set forth in these examples should be interpreted as merely exemplary, and not as a limitation.
[0025] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality of" is greater than or equal to two; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like is only for the purpose of facilitating the description of the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0026] In addition, "first", "second", and similar words used in the present disclosure do not indicate any order, number, or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.
[0027] It should be noted that, in the description of the present disclosure, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances. When it is described that a specific device is located between the first device and the second device, there can be or can not be an intermediate device between the specific device and the first device or the second device.
[0028] All the terms used in the present disclosure have the same meaning as understood by those skilled in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that the terms defined in general dictionaries should be interpreted to have meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or excessively formalized sense, unless specifically defined here.
[0029] The technologies, methods and devices known to those skilled in the relevant art can not be discussed in detail, but in appropriate cases, the technologies, methods and devices should be considered as part of the specification.
[0030] Embodiment
[0031] Figure 3 is a structural schematic diagram of the working principle of the kiln disclosed in the embodiments of the present disclosure. In the existing glass substrate production process, the batch material is melted by using the kiln. The batch material enters the inside of the cuboid-shaped kiln through the charging port 30 and is stacked into a material mountain 31, and the batch material is melted by heating together through multiple sets of electrode bricks 32 and multiple sets of burners 26 arranged on both sides of the kiln. The burner 26 is the output end of the combustion system of the kiln, and each set of burner 26 is composed of one gas pipeline and one oxygen pipeline. The mixed gas of the gas pipeline and the oxygen pipeline of the combustion system is burned through the burner 26 to melt the batch material, in which the gas is used for heating and the oxygen is used for combustion support.
[0032] The embodiments of the present disclosure improve the existing combustion system, and add a compressed air pipeline, Figure 1 is a structural schematic diagram of the combustion system for glass substrate disclosed in the embodiments of the present disclosure. As shown in Figure 1 The combustion system includes an oxygen pipeline for conveying oxygen, a gas pipeline for conveying gas, and a burner 26 located at the merging place of the output end of the oxygen pipeline and the output end of the gas pipeline, and the mixed gas of oxygen and gas is burned through the burner 26. The combustion system further comprises a compressed air pipeline connected with the oxygen pipeline, and an electromagnetic valve 16 is arranged on the compressed air pipeline. When the combustion system stops burning, the electromagnetic valve 16 is opened to convey compressed air to the oxygen pipeline, so as to cool the burner 26.
[0033] It can be understood that the increased compressed air pipeline is used to provide compressed air to achieve the cooling of the burner 26. When the burner 26 stops burning, the gas needs to be closed first and then the oxygen is closed to avoid the incomplete combustion of the gas into the flue gas pipeline to cause the gas leakage. The compressed air pipeline is connected with the oxygen pipeline, and the compressed air is provided to the burner 26 after the combustion system stops burning to ensure that the cooling of the burner is achieved after the complete combustion. Moreover, the electromagnetic valve 16 is arranged on the compressed air pipeline, when the combustion system normally operates, the burner 26 normally burns, the electromagnetic valve 16 is in the closed state, when the combustion system fails or stops burning, the burner 26 is closed, the electromagnetic valve 16 is opened, and the compressed air is delivered to the burner 26 to ensure that the burner 26 is cooled in time to avoid the damage of the equipment.
[0034] Figure 2 is a structural schematic diagram of the compressed air pipeline disclosed by the embodiment of the present disclosure. In combination with Figure 1 and Figure 2 It is shown that in the embodiment of the present disclosure, the oxygen pipeline includes an oxygen main pipeline 18, an oxygen branch pipeline 20, and an oxygen bypass pipeline 4; the gas pipeline includes a gas main pipeline 19, a gas branch pipeline 21, and a gas bypass pipeline 5; and the compressed air pipeline includes a compressed air main pipeline 22 and a compressed air main pipeline 3. Wherein, the gas pipeline, the oxygen pipeline, and the compressed air pipeline are respectively supplied by a gas supply source 24, an oxygen supply source 23, and a compressed air supply source 25. Since the burner 26 is located at the merging point of the output end of the oxygen pipeline and the output end of the gas pipeline, and the burners 26 of the kiln are distributed on both sides of the kiln, the oxygen pipeline and the gas pipeline are divided into two oxygen branch pipelines 20 and two gas branch pipelines 21. The output end of each oxygen branch pipeline 20 and gas branch pipeline 21 corresponds to one burner 26, and each set of oxygen pipeline and gas pipeline corresponds to one set of burners 26.
[0035] The oxygen supply source 23 is arranged at one end of the oxygen main pipeline 1 to provide oxygen to the oxygen pipeline. The oxygen main pipeline 1 is provided with a pressure switch 12, a pressure detection device 13, a temperature detection device 14, and a pressure gauge 15. The oxygen main pipeline 18 is sequentially provided with a ball valve 7 and a cut-off valve 6. The two oxygen branch pipelines 20 are symmetrically distributed with a ball valve 7, a flowmeter 9, an actuator 10, a ball valve 7, and a check valve 11. The oxygen bypass pipeline 4 is sequentially provided with a ball valve 7, a needle valve 8, a flowmeter 9, and a ball valve 7. The oxygen bypass pipeline 4 is located in the middle, and the two oxygen branch pipelines 20 are symmetrically distributed on both sides of the oxygen bypass pipeline 4 and connected with the output end of the oxygen bypass pipeline 4. The needle valve 8 and the check valve 11 are arranged between the oxygen bypass pipeline 4 and the oxygen branch pipeline 20.
[0036] The gas supply source 24 is arranged at one end of the gas main pipeline 2 to provide gas to the gas pipeline. The gas main pipeline 2 is provided with a pressure switch 12, a pressure detection device 13, a temperature detection device 14 and a pressure gauge 15. The gas main pipeline 19 is provided with a ball valve 7 and a cut-off valve 6 in sequence. The two gas branch pipelines 21 are symmetrically provided with a ball valve 7, a flowmeter 9, an actuator 10 and a ball valve 7. The gas bypass pipeline 5 is provided with a ball valve 7, a needle valve 8, a flowmeter 9 and a ball valve 7 in sequence. The gas bypass pipeline 5 is located in the middle, and the two gas branch pipelines 21 are symmetrically distributed on both sides of the gas bypass pipeline 5. The gas branch pipeline 21 is connected to the output end of the gas bypass pipeline 5. The needle valve 8 and the one-way valve 11 are arranged between the gas bypass pipeline 5 and the gas branch pipeline 21. The structure of the gas pipeline is basically the same as that of the oxygen pipeline, except that the oxygen branch pipeline 20 is additionally provided with a one-way valve 11 at the upper part, which is used to prevent the compressed air from entering the oxygen pipeline due to insufficient oxygen in the oxygen pipeline when the oxygen pipeline and the compressed air pipeline intersect. A one-way valve 11 and a ball valve 7 are arranged in front of the torch 26 at the merging position of the output end of the oxygen pipeline and the output end of the gas pipeline, which are used to prevent the occurrence of torch backfire phenomenon.
[0037] The compressed air supply source 25 is arranged at one end of the compressed air main pipeline 3 to provide compressed air to the compressed air pipeline. The compressed air main pipeline 3 is provided with a pressure gauge 15, a temperature detection device 14 and a pressure reducing valve 17. The compressed air main pipeline 22 is provided with a ball valve 7, a needle valve 8, a flowmeter 9 and a solenoid valve 16 in sequence. The compressed air main pipeline 22 is provided with two output ends, each of which is provided with a needle valve 8 and a one-way valve 11 in sequence. The output ends of the compressed air pipeline are merged into one path with the output ends of the oxygen branch pipeline 20. The combustion system shown in the embodiment is powered by a group of two torches. The oxygen other branch 27, the gas other branch 28 and the compressed air other branch 29 provide power sources for other groups of torches 26. The structure and function are the same as those of the embodiment, and are not described here. The above-mentioned combustion system is connected to the computer host through power lines and signal lines to realize monitoring and control of the combustion system.
[0038] During normal operation of the combustion system disclosed by the embodiments of the present disclosure, the oxygen supply source 23 and the fuel gas supply source 24 normally supply oxygen, at this time, the ball valves 7 and the shut-off valves 6 on the oxygen main pipeline 18 and the fuel gas main pipeline 19 are opened; the upper and lower ball valves 7 on the two oxygen branch pipelines 20 and the two fuel gas branch pipelines 21 are opened; the upper and lower ball valves 7 and the needle valves 8 on the oxygen bypass pipeline 4 and the fuel gas bypass pipeline 5 are closed; the needle valves 8 between the oxygen branch pipeline 20 and the oxygen bypass pipeline 4 and between the fuel gas branch pipeline 21 and the fuel gas bypass pipeline 5 are closed; the ball valve 7 before the lance is opened; the ball valve 7 and the needle valve 8 of the compressed air main pipeline 3 are opened; the needle valve 8 on the output end of the compressed air pipeline is opened; the electromagnetic valve 16 of the compressed air main pipeline 3 is set to an automatic mode, when the lance 26 normally burns, the electromagnetic valve 16 is in a closed state, when the lance 26 is closed, the electromagnetic valve 16 is opened to pass in compressed air.
[0039] The pressure switches 12 in the oxygen main pipeline 1 and the fuel gas main pipeline 2 can manually set the safe pressure range of the pipeline, and then detect and feedback the oxygen and fuel gas pressure in the oxygen pipeline and the fuel gas pipeline through the pressure detection device 13. When the oxygen and fuel gas pressure in the pipeline exceeds the safe pressure range set by the pressure switch 12, in order to ensure the safety of the equipment and personnel, the combustion system will close the shut-off valve 6 and the actuator 10 to stop the combustion system. At the same time, the compressed air main pipeline 3 opens the electromagnetic valve 16 in the pipeline through the stop burning instruction fed back by the combustion system, passes in compressed air to the two oxygen branch pipelines 20 and transports it to the front of the lance 26 to protectively cool the lance 26, so as to ensure the safety of the equipment.
[0040] The combustion system provided by the embodiments of the present disclosure supplies gas through the oxygen branch pipeline 20 and the fuel gas branch pipeline 21 during normal operation, and the oxygen bypass pipeline 4 and the fuel gas bypass pipeline 5 are closed, and when the combustion system is abnormal, it is switched to a bypass mode. The abnormality of the combustion system is, for example, that the oxygen, fuel gas and compressed air supply is normal, and the power system is normal during the period, the lance 26 is extinguished, at this time, the bypass mode needs to be switched, Figure 4 It is a flowchart of switching the combustion system to a bypass mode disclosed by the embodiments of the present disclosure, and the specific operation steps are shown in steps S101-S108.
[0041] Step S101: The lance 26 is abnormally extinguished, and the extinguishing reason is confirmed;
[0042] Step S102: The state of each valve in the oxygen pipeline and the fuel gas pipeline is confirmed;
[0043] Step S103: The shut-off valve 6 of the oxygen main pipeline 18 is in a manual state, and the shut-off valve 6 is opened;
[0044] Step S104: open the ball valve 7 of the oxygen bypass path 4, close the upper and lower ball valves 7 in the oxygen branch path 20, and adjust the needle valve 8 between the oxygen branch path 20 and the oxygen bypass path 4 to a fully open state;
[0045] Step S105: close the ball valve 7 of the compressed air main path 22, and open the needle valve 8 of the oxygen bypass path 4 to a normal gas flow state;
[0046] Step S106: set the shut-off valve 6 of the gas main path 19 to a manual state, and open the shut-off valve 6;
[0047] Step S107: open the ball valve 7 of the gas bypass path 5, close the upper and lower ball valves 7 in the gas branch path 21, and adjust the needle valve 8 between the gas branch path 21 and the gas bypass path 5 to a fully open state;
[0048] Step S108: open the needle valve 8 of the gas bypass path 5 to a normal gas flow state.
[0049] It should be noted that when switching the bypass mode, the oxygen bypass path 4 needs to be opened first, and then the gas bypass path 5 is opened, so as to avoid the insufficient combustion gas entering the flue gas pipeline and causing gas leakage.
[0050] Figure 5 is a flowchart of the combustion system disclosed in the embodiments of the present disclosure switching back to the branch gas supply from the bypass mode. After the failure of the combustion system is eliminated, the bypass path needs to be switched back to the branch path for gas supply, and the specific operation steps are shown in steps S201-S206.
[0051] Step S201: confirm that the failure is eliminated, and the equipment can be normally started;
[0052] Step S202: close the shut-off valve 6 of the gas main path 19, and set the shut-off valve 6 to an automatic state;
[0053] Step S203: close the ball valve 7 and the needle valve 8 of the gas bypass path 5, close the needle valve 8 between the gas branch path 21 and the gas bypass path 5, and open the upper and lower ball valves 7 of the gas branch path 21;
[0054] Step S204: close the shut-off valve 6 of the oxygen main path 18, set the shut-off valve 6 to an automatic state, open the ball valve of the compressed air main path 22, and adjust the opening degree of the needle valve 8 of the compressed air main path 22;
[0055] Step S205: close the ball valve 7 and the needle valve 8 of the oxygen bypass path 4, close the needle valve 8 between the oxygen branch path 20 and the oxygen bypass path 4, and open the upper and lower ball valves 7 of the oxygen branch path 20;
[0056] Step S206: simultaneously open the shut-off valves 6 of the oxygen main path 18 and the gas main path 19, and restore the gas state.
[0057] It should be noted that when switching back to the mode of supplying gas from the branch pipe from the bypass mode, the gas bypass pipe 5 needs to be closed first and then the oxygen bypass pipe 4 is closed to avoid the incomplete combustion of gas entering the flue gas pipeline causing gas leakage. The above-mentioned gas pipeline, oxygen pipeline and compressed air pipeline can be adjusted by adjusting the needle valve 8 on each pipeline to achieve accurate adjustment of the supply amount of each gas of a single or a group of burners in different modes, so as to achieve the purpose of optimizing the combustion or cooling state.
[0058] In some embodiments, the combustion system further comprises: a pressure switch 12 disposed on the oxygen main pipeline 1 and the gas main pipeline 2 for setting the safe pressure range of the gas in the gas pipeline and the oxygen pipeline; a pressure detection device 13 disposed on the oxygen main pipeline 1 and the gas main pipeline 2 for detecting the gas pressure in the oxygen pipeline and the gas pipeline and feeding back the detected gas pressure to the combustion system.
[0059] In some embodiments, the combustion system further comprises: a flow meter 9 disposed on the oxygen branch pipeline 20, the oxygen bypass pipeline 4, the gas branch pipeline 21, the gas bypass pipeline 5 and the compressed air main pipeline 22 for detecting the gas flow in the gas pipeline, the oxygen pipeline and the compressed air pipeline and feeding back the detected gas flow to the combustion system.
[0060] In some embodiments, the combustion system further comprises: a shut-off valve 6 disposed on the gas main pipeline 19 and the oxygen main pipeline 18, which is closed when the gas pressure in the gas pipeline and the oxygen pipeline exceeds the safe pressure range set by the pressure switch 12 to cut off the gas flow in the gas pipeline and the oxygen pipeline, and which is opened when the combustion system is normally running to allow the gas flow in the gas pipeline and the oxygen pipeline; an actuator 10 disposed on the gas branch pipeline 21 and the oxygen branch pipeline 20, which adjusts the opening of the actuator 10 according to the gas flow value detected by the flow meter 9 to adjust the gas flow in the gas branch pipeline 21 and the oxygen branch pipeline 20, and which is closed when the gas pressure in the gas pipeline and the oxygen pipeline exceeds the safe pressure range set by the pressure switch.
[0061] In some embodiments, the combustion system further comprises: ball valves 7 disposed on the oxygen main pipeline 18, the oxygen branch pipeline 20, the oxygen bypass pipeline 4, the fuel gas main pipeline 19, the fuel gas branch pipeline 21, the fuel gas bypass pipeline 5, and the compressed air main pipeline 22, for adjusting the flow of gas; when the combustion system is in normal operation, the ball valves 7 on the oxygen main pipeline 19, the oxygen branch pipeline 20, the fuel gas main pipeline 19, the fuel gas branch pipeline 21, and the compressed air main pipeline 22 are opened, and the ball valves 7 on the oxygen bypass pipeline 4 and the fuel gas bypass pipeline 5 are closed; needle valves 8 disposed between the oxygen bypass pipeline 4 and the oxygen branch pipeline 20, between the fuel gas bypass pipeline 5 and the fuel gas branch pipeline 21, and on the compressed air main pipeline 22, for adjusting the flow of gas; when the combustion system is in normal operation, the needle valves 8 between the oxygen bypass pipeline 4 and the oxygen branch pipeline 20, and between the fuel gas bypass pipeline 5 and the fuel gas branch pipeline 21 are closed, and the needle valve 8 on the compressed air main pipeline 22 is opened.
[0062] Specifically, the needle valves 8 have more precise flow adjustment capability than the ball valves 7, and the supply amount of oxygen and fuel gas in the bypass mode and the flow of compressed air for cooling the lance 26 during the closing of the lance 26 can be adjusted by manually adjusting the opening degree of the needle valves 8. In this way, when abnormality occurs in the electrical components of the branch pipelines or power supply abnormality occurs, the combustion system can be controlled through the bypass pipelines, thereby improving the safety and stability of the combustion system.
[0063] In some embodiments, the combustion system further comprises one-way valves 11 disposed on the oxygen branch pipeline 20, between the oxygen branch pipeline 20 and the oxygen bypass pipeline 4, and between the fuel gas branch pipeline 21 and the fuel gas bypass pipeline 5, for ensuring one-way flow of gas and preventing backflow of different gases in the pipelines.
[0064] In some embodiments, ball valves 7 and one-way valves 11 are further disposed in front of the lance 26.
[0065] So far, the embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.
[0066] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be replaced equivalently without departing from the scope and spirit of the present disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way.
Claims
1. A combustion system for a glass substrate comprising an oxygen line for delivering oxygen, a fuel gas line for delivering fuel gas, and a lance (26) located at the junction of the output of the oxygen line and the output of the fuel gas line through which a mixture of the oxygen and the fuel gas is combusted, characterised in that, The combustion system further comprises: A compressed air pipeline connected to the oxygen pipeline, and an electromagnetic valve (16) arranged on the compressed air pipeline, which is opened to deliver compressed air to the oxygen pipeline when the combustion system stops burning, so as to cool the lance (26).
2. The combustion system according to claim 1, wherein The oxygen pipeline comprises an oxygen main pipeline (1), an oxygen main pipeline (18), an oxygen branch pipeline (20), and an oxygen bypass pipeline (4); The gas pipeline comprises a gas main pipeline (2), a gas main pipeline (19), a gas branch pipeline (21), and a gas bypass pipeline (5); and The compressed air pipeline comprises a compressed air main pipeline (3) and a compressed air main pipeline (22).
3. The combustion system of claim 2, wherein, The combustion system further comprises: A pressure switch (12) arranged on the oxygen main pipeline (1) and the gas main pipeline (2) to set a safe pressure range of the gas in the gas pipeline and the oxygen pipeline; A pressure detection device (13) arranged on the oxygen main pipeline (1) and the gas main pipeline (2) to detect the gas pressure in the oxygen pipeline and the gas pipeline and feed back the detected gas pressure to the combustion system.
4. The combustion system of claim 3, wherein, The combustion system further comprises: A flow meter (9) arranged on the oxygen branch pipeline (20), the oxygen bypass pipeline (4), the gas branch pipeline (21), the gas bypass pipeline (5), and the compressed air main pipeline (22) to detect the gas flow in the gas pipeline, the oxygen pipeline, and the compressed air pipeline and feed back the detected gas flow to the combustion system.
5. The combustion system of claim 4, wherein, The combustion system further comprises: A shut-off valve (6) arranged on the gas main pipeline (19) and the oxygen main pipeline (18) to be closed to cut off the gas flow in the gas pipeline and the oxygen pipeline when the gas pressure in the gas pipeline and the oxygen pipeline exceeds the safe pressure range set by the pressure switch (12), The shut-off valve (6) is opened to make the gas flow in the gas pipeline and the oxygen pipeline when the combustion system is normally running; An actuator (10) arranged on the gas branch pipeline (21) and the oxygen branch pipeline (20) to adjust the opening of the actuator (10) according to the gas flow value detected by the flow meter (9) to adjust the gas flow in the gas branch pipeline (21) and the oxygen branch pipeline (20), and The actuator (10) is closed when the gas pressure in the gas pipeline and the oxygen pipeline exceeds the safe pressure range set by the pressure switch (12).
6. The combustion system of claim 2, wherein The combustion system further comprises: A ball valve (7) arranged on the oxygen main pipeline (18), the oxygen branch pipeline (20), the oxygen bypass pipeline (4), the gas main pipeline (19), the gas branch pipeline (21), the gas bypass pipeline (5), and the compressed air main pipeline (22) to adjust the gas flow, When the combustion system is normal, the ball valves (7) on the oxygen main pipeline (18), the oxygen branch pipeline (20), the gas main pipeline (19), the gas branch pipeline (21) and the compressed air main pipeline (22) are opened, and the ball valves (7) on the oxygen bypass pipeline (4) and the gas bypass pipeline (5) are closed; Needle valves (8) are arranged between the oxygen bypass pipeline (4), the oxygen branch pipeline (20) and the oxygen bypass pipeline (4), between the gas bypass pipeline (5), the gas branch pipeline (21) and the gas bypass pipeline (5), and in the compressed air main pipeline (22) for adjusting the flow of gas, When the combustion system is normal, the needle valves (8) between the oxygen bypass pipeline (4), the oxygen branch pipeline (20) and the oxygen bypass pipeline (4), between the gas bypass pipeline (5), the gas branch pipeline (21) and the gas bypass pipeline (5) are closed, and the needle valve (8) of the compressed air main pipeline (22) is opened.
7. The combustion system of claim 2, wherein The combustion system further comprises one-way valves (11) arranged in the oxygen branch pipeline (20), between the oxygen branch pipeline (20) and the oxygen bypass pipeline (4), between the gas branch pipeline (21) and the gas bypass pipeline (5) for ensuring one-way flow of gas and preventing backflow of different gases in the pipelines.
8. The combustion system of claim 2, wherein, The compressed air main pipeline (22) is provided with two output ends connected to the output end of the oxygen branch pipeline (20) respectively.
9. The combustion system of claim 1, wherein The lance (26) is further provided with a ball valve (7) and a one-way valve (11) in front of the lance (26).
10. The combustion system of claim 6, wherein, When the combustion system is abnormal, the bypass mode is switched to: The ball valves (7) on the oxygen bypass pipeline (4) and the gas bypass pipeline (5) are opened, and the ball valves (7) on the oxygen branch pipeline (20) and the gas branch pipeline (21) are closed; The needle valves (8) between the oxygen bypass pipeline (4), the oxygen branch pipeline (20) and the oxygen bypass pipeline (4), between the gas bypass pipeline (5), the gas branch pipeline (21) and the gas bypass pipeline (5) are opened; and The ball valve (7) on the compressed air main pipeline (22) is closed.