A combustion system for a glass fiber tank furnace and a method of controlling the same

Abstract

This invention provides a combustion system for a fiberglass tank furnace, comprising a fuel delivery pipeline, a burner, a fiberglass tank furnace, and an intelligent control device. The fuel delivery pipeline includes a hydrogen pipeline, a natural gas pipeline, an oxygen pipeline, and a mixed-gas pipeline. The output ends of the hydrogen and natural gas pipelines are connected to the input end of the mixed-gas pipeline via a mixing device. The output ends of the mixed-gas pipeline and the oxygen pipeline are connected to the burner. The burner is located on the inner wall of the fiberglass tank furnace and is used to ignite the gases in the mixed-gas and oxygen pipelines to heat the fiberglass tank furnace. The intelligent control device is electrically connected to the fuel delivery pipeline and the fiberglass tank furnace and is used to adjust the flow rates of hydrogen, natural gas, and oxygen in the mixed-gas and oxygen pipelines respectively based on the electrical signals output by the fiberglass tank furnace. This solution not only achieves low carbon emissions but also accurately controls the temperature and combustion atmosphere in the fiberglass tank furnace, improving combustion efficiency.

Description

Technical Field

[0001] This invention relates to the field of glass fiber tank furnace drawing technology, and in particular to a combustion system and control method for a glass fiber tank furnace. Background Technology

[0002] Currently, glass fibers are often produced using the glass fiber tank furnace method. In the production process, a torch is usually installed on the arch or breast wall of the glass fiber tank furnace. The high-brightness flame and high-temperature flue gas generated by the torch are used to continuously heat the glass batch in the tank furnace until qualified glass melt is produced for glass fiber forming.

[0003] In the glass fiber tank furnace production process, the furnace combustion control system is a core piece of equipment that directly affects the production efficiency and cost of glass fiber. In related technologies, glass fiber tank furnace production typically utilizes the heat generated from the combustion of fossil fuels to melt the batch materials into molten glass. However, this method not only has low combustion efficiency but also consumes a large amount of fossil fuels and produces a significant amount of carbon dioxide gas. According to incomplete statistics, the melting section currently emits at least 400 kg of carbon dioxide gas to produce one ton of glass fiber. Therefore, energy conservation and carbon reduction in glass fiber production are urgently needed.

[0004] Therefore, based on the above problems, it is necessary to provide a combustion system and control method for a glass fiber tank furnace. Summary of the Invention

[0005] This invention provides a combustion system and control method for a glass fiber tank furnace, which can solve the technical problems of high energy consumption, strong pollution, and low combustion efficiency of the combustion system of glass tank furnaces in related technologies.

[0006] In a first aspect, the present invention provides a combustion system for a glass fiber tank furnace, the system comprising a fuel delivery pipeline 100, a combustion gun 200, a glass fiber tank furnace 300, and an intelligent control device 400; wherein:

[0007] The fuel delivery pipeline 100 includes a hydrogen pipeline 101, a natural gas pipeline 102, an oxygen pipeline 103, and a gas mixing pipeline 104. The output ends of the hydrogen pipeline 101 and the natural gas pipeline 102 are connected to the input end of the gas mixing pipeline 104 through a gas mixing device 1001. The output ends of the gas mixing pipeline 104 and the oxygen pipeline 103 are connected to the combustion gun 200.

[0008] The combustion gun 200 is located on the inner wall of the glass fiber furnace 300 and is used to ignite the gas in the gas mixing pipe 104 and the oxygen pipe 103 to heat the glass fiber furnace 300.

[0009] The intelligent control device 400 is electrically connected to the fuel delivery pipeline 100 and the glass fiber furnace 300, and is used to adjust the flow rates of hydrogen, natural gas and oxygen in the gas mixing pipeline 104 and the oxygen pipeline 103 respectively according to the electrical signal output by the glass fiber furnace 300.

[0010] Preferably, the glass fiber furnace 300 is equipped with a temperature detector 301 and a gas detector 302. The temperature detector 301 and the gas detector 302 are used to detect the temperature and oxygen content inside the glass fiber furnace 300 and output electrical signals to the intelligent control device 400, respectively.

[0011] Along the input end to the output end, the middle of the hydrogen pipeline 101, the oxygen pipeline 103 and the natural gas pipeline 102 are each provided with a first pressure transmitter 105, a gas filter 106, a pressure regulator 107, a safety shut-off device 108, a calorific value detector 109, a flow meter 110, a second pressure transmitter 111 and a flow regulator 112.

[0012] Preferably, the intelligent control device 400 is electrically connected to the temperature detector 301, the gas detector 302 and the flow regulator 112 respectively, and is used to control the flow regulator 112 according to the electrical signals output by the temperature detector 301 and the gas detector 302, so as to adjust the flow rates of hydrogen, natural gas and oxygen in the gas mixing pipeline 104 and the oxygen pipeline 103 respectively.

[0013] Preferably, a one-way valve 113 is provided in the middle of the hydrogen pipeline 101 and the natural gas pipeline 102. The one-way valve 113 is located between the gas mixing device 1001 and the flow regulator 112 to prevent backflow of gas in the hydrogen pipeline 101 and the natural gas pipeline 102.

[0014] Preferably, gas leak detectors 114 are provided on the outside of the hydrogen pipeline 101, the oxygen pipeline 103 and the natural gas pipeline 102. The gas leak detectors 114 are electrically connected to the intelligent control device 400. The gas leak detectors 114 are used to detect the amount of gas leakage in the hydrogen pipeline 101, the oxygen pipeline 103 and the natural gas pipeline 102 and output electrical signals to the intelligent control device 400.

[0015] The intelligent control device 400 is electrically connected to the safety shut-off device 108 and is used to control the switching of the safety shut-off device 108 according to the electrical signal output by the gas leak detector 114.

[0016] Preferably, both the output end of the gas mixing pipe 104 and the output end of the oxygen pipe 103 are provided with a backfire prevention device 115, which is used to prevent the flame of the combustion gun 200 from spreading to the fuel delivery pipe 100.

[0017] In a second aspect, the present invention provides a method for controlling the combustion system of a glass fiber tank furnace according to any one of the first aspects, the method comprising:

[0018] Natural gas, hydrogen, and oxygen are respectively transported into the glass fiber furnace 300 through the gas mixing pipe 104 and the oxygen pipe 103 in a preset ratio.

[0019] The gas in the glass fiber tank furnace 300 is ignited by the combustion gun 200 to heat the glass fiber tank furnace 300;

[0020] Based on the electrical signal output from the glass fiber furnace 300, the flow rates of hydrogen, natural gas, and oxygen in the mixing pipeline 104 and the oxygen pipeline 103 are adjusted respectively.

[0021] Preferably, adjusting the flow rates of hydrogen, natural gas, and oxygen in the mixing pipe 104 and oxygen pipe 103 respectively according to the electrical signal output by the glass fiber furnace 300 includes:

[0022] The actual temperature and actual oxygen content in the glass fiber furnace 300 are detected by temperature detector 301 and gas detector 302 respectively, and the actual temperature and actual oxygen content are converted into electrical signals and fed back to the intelligent control device 400.

[0023] Based on the electrical signal, the preset temperature of the glass fiber furnace 300, and the preset combustion atmosphere of the glass fiber furnace 300, the flow rates of hydrogen, natural gas, and oxygen in the mixing pipeline 104 and the oxygen pipeline 103 are adjusted respectively.

[0024] Preferably, the gas flow rate in the mixing pipe is adjusted using the following formula:

[0025] V = k × |T1-T2|

[0026] In the formula, V is the gas flow rate in the mixing pipe, T1 is the actual temperature of the glass fiber furnace, T2 is the preset temperature of the glass fiber furnace, and k is a constant, ranging from 0.1 to 0.8.

[0027] Preferably, the hydrogen, natural gas, and oxygen in the gas mixing pipe and the oxygen pipe satisfy the following reaction equation:

[0028] mH2+(1-m)OH4+n*(2-1.5m)O2→(1-m)CO2+(2-m)H2O +(n-1)(2-1.5m)O2

[0029] In the formula, m is the volume percentage of hydrogen in the glass fiber tank furnace; when the combustion atmosphere of the glass fiber tank furnace is in a reducing state, n is 0.9 to 1; when the combustion atmosphere of the glass fiber tank furnace is in an oxidizing state, n is 1 to 1.15.

[0030] Compared with the prior art, the present invention has at least the following beneficial effects:

[0031] The combustion system of the glass fiber tank furnace in this invention uses a fuel delivery pipeline consisting of a hydrogen pipeline, a natural gas pipeline, and an oxygen pipeline. A combustion gun is located inside the glass fiber tank furnace. The combustion gun ignites the hydrogen, natural gas, and oxygen in the fuel delivery pipeline to heat the glass fiber tank furnace. The glass fiber tank furnace uses a mixture of hydrogen and natural gas with oxygen for combustion assistance, thus reducing fossil fuel consumption and achieving low carbon emissions. Furthermore, the combustion system includes an intelligent control device electrically connected to both the fuel delivery pipeline and the glass fiber tank furnace. During combustion, the intelligent control device can control the flow rates of hydrogen, natural gas, and oxygen in the fuel delivery pipeline and oxygen pipeline in real time based on electrical signals emitted from inside the glass fiber tank furnace. This allows for accurate control of the temperature and combustion atmosphere within the glass fiber tank furnace, improving combustion efficiency. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the combustion system structure of a glass fiber tank furnace provided in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the combustion system structure of another glass fiber tank furnace provided in an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the combustion system structure of another glass fiber tank furnace provided in an embodiment of the present invention;

[0036] Figure 4 This is a flowchart of a control method for a combustion system of a glass fiber tank furnace provided in an embodiment of the present invention;

[0037] In the diagram: 100-Fuel delivery pipeline; 200-Combustion gun; 300-Fiberglass furnace; 400-Intelligent control device; 1001-Gas mixing device; 101-Hydrogen pipeline; 102-Natural gas pipeline; 103-Oxygen pipeline; 104-Gas mixing pipeline; 301-Temperature detector; 302-Gas detector; 105-First pressure transmitter; 106-Gas filter; 107-Pressure regulator; 108-Safety shut-off device; 109-Calorific value detector; 110-Flow meter; 111-Second pressure transmitter; 112-Flow regulator; 113-Check valve; 114-Gas leak detector; 115-Backfire prevention device; 116-Diaphragm pressure regulator; 117-Low pressure switch; 118-High pressure switch. Detailed Implementation

[0038] 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 some embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] like Figure 1 As shown, the present invention provides a combustion system for a glass fiber tank furnace, including a fuel delivery pipe 100, a combustion gun 200, a glass fiber tank furnace 300, and an intelligent control device 400; wherein:

[0040] The fuel delivery pipeline 100 includes a hydrogen pipeline 101, a natural gas pipeline 102, an oxygen pipeline 103, and a mixing pipeline 104. The output ends of the hydrogen pipeline 101 and the natural gas pipeline 102 are connected to the input end of the mixing pipeline 104 through a mixing device 1001. The output ends of the mixing pipeline 104 and the oxygen pipeline 103 are connected to the combustion gun 200.

[0041] The combustion gun 200 is located on the inner wall of the glass fiber tank furnace 300 and is used to ignite the gas in the gas mixing pipe 104 and the oxygen pipe 103 to heat the glass fiber tank furnace 300.

[0042] The intelligent control device 400 is electrically connected to the fuel delivery pipeline 100 and the glass fiber furnace 300, and is used to adjust the flow rates of hydrogen, natural gas and oxygen in the gas mixing pipeline 104 and the oxygen pipeline 103 respectively according to the electrical signal output by the glass fiber furnace 300.

[0043] like Figure 1As shown, the combustion system of the glass fiber tank furnace in this embodiment uses a fuel delivery pipe 100 configured as a hydrogen pipe 101, a natural gas pipe 102, and an oxygen pipe 103. A combustion gun 200 is located inside the glass fiber tank furnace 300. The combustion gun 200 ignites the hydrogen, natural gas, and oxygen in the fuel delivery pipe 100 to heat the glass fiber tank furnace 300. The glass fiber tank furnace 300 uses a mixture of hydrogen and natural gas with oxygen for combustion assistance. Therefore, it not only reduces the consumption of fossil fuels but also achieves low carbon emissions. Furthermore, the combustion system of this invention also includes an intelligent control device 400, which is electrically connected to both the fuel delivery pipe 100 and the glass fiber tank furnace 300. During combustion, the intelligent control device 400 can control the flow rates of hydrogen, natural gas, and oxygen in the fuel delivery pipe 100 and the oxygen pipe 103 in real time based on electrical signals emitted from inside the glass fiber tank furnace 300. This improves combustion efficiency and accurately controls the temperature and combustion atmosphere within the glass fiber tank furnace 300.

[0044] like Figure 2 As shown, according to some preferred embodiments, the glass fiber furnace 300 is equipped with a temperature detector 301 and a gas detector 302. The temperature detector 301 and the gas detector 302 are used to detect the temperature and oxygen content inside the glass fiber furnace 300 and output electrical signals to the intelligent control device 400, respectively.

[0045] Along the input end to the output end, the middle of the hydrogen pipeline 101, oxygen pipeline 103 and natural gas pipeline 102 are each provided with a first pressure transmitter 105, a gas filter 106, a pressure regulator 107, a safety shut-off device 108, a calorific value detector 109, a flow meter 110, a second pressure transmitter 111 and a flow regulator 112.

[0046] It should be noted that in this embodiment, the input ends of the hydrogen pipeline 101, natural gas pipeline 102, and oxygen pipeline 103 are respectively connected to the hydrogen source, natural gas source, and oxygen source. The gas source can be pipeline gas, liquid hydrogen, liquid natural gas, or liquid oxygen. The supply pressure of the gas source should be greater than the pressure at the combustion gun 200. The pressure of hydrogen should be greater than 100 kPa, and the pressure of natural gas and oxygen should be greater than 70 kPa. In particular, the pressure of hydrogen should be greater than the pressure of natural gas.

[0047] According to some preferred embodiments, the intelligent control device 400 is electrically connected to the temperature detector 301, the gas detector 302 and the flow regulator 112 respectively, and is used to control the flow regulator 112 according to the electrical signals output by the temperature detector 301 and the gas detector 302, so as to adjust the flow rates of hydrogen, natural gas and oxygen in the gas mixing pipeline 104 and the oxygen pipeline 103 respectively.

[0048] In this embodiment, as Figure 2 As shown, a temperature detector 301 and a gas detector 302 can be respectively installed on the top of the glass fiber furnace 300. Flow regulators 112 are installed at the ends of the hydrogen pipeline 101, oxygen pipeline 103, and natural gas pipeline 102 in the fuel delivery pipeline 100. During combustion, the temperature detector 301 can detect the temperature in the melting space of the glass fiber furnace 300 in real time, and the gas detector 302 can detect the concentrations of hydrogen, carbon monoxide, and oxygen in the melting space of the glass fiber furnace 300 to determine the combustion atmosphere inside the glass fiber furnace 300. The temperature detector 301 and the gas detector 302 transmit the detected data to the intelligent control device 400 in the form of electrical signals. The intelligent control device 400 adjusts the mixing ratio of natural gas-hydrogen mixture and oxygen by controlling the flow regulators 112 at the ends of the hydrogen pipeline 101, oxygen pipeline 103, and natural gas pipeline 102, thereby achieving real-time control of the temperature and combustion atmosphere of the glass fiber furnace 300.

[0049] Continue to refer to Figure 2 Along the fuel delivery pipeline from the inlet to the outlet, the hydrogen pipeline 101, oxygen pipeline 103, and natural gas pipeline 102 are each sequentially equipped with a pressure transmitter, a gas filter 106, a pressure regulator 107, a safety shut-off device 108, a calorific value detector 109, a flow meter 110, and a flow controller 112. The pressure transmitter converts the sensed gas pressure parameters in the pipeline into a standard electrical signal, which is then used to supply secondary instruments such as indicators, recorders, and controllers for measurement, indication, and process regulation. The gas filter 106 filters the gases in the hydrogen pipeline 101, oxygen pipeline 103, and natural gas pipeline 102 respectively to remove gas... Impurities in the gas; the pressure regulator 107 ensures that the gas in the pipeline has a stable pressure during transportation. In this embodiment, the pressure regulator 107 is a manual adjustment device. The safety shut-off device 108 is electrically connected to the intelligent control device 400. In order to ensure the normal operation of each solenoid valve, pressure switch, detection device and intelligent control device 400 in the fuel system, when a power failure occurs, the safety shut-off device 108 can open in time to prevent the transportation of hydrogen, natural gas and oxygen in the fuel transportation pipeline 100; the calorific value detector 109 is electrically connected to the intelligent control device 400. During the combustion process, the calorific value detector 109 detects the calorific value of the gas in real time and transmits the detection data to the intelligent control device 400.

[0050] According to some preferred embodiments, a one-way valve 113 is also provided in the middle of the hydrogen pipeline 101 and the natural gas pipeline 102. The one-way valve 113 is located between the gas mixing device 1001 and the flow regulator 112 to prevent gas backflow in the hydrogen pipeline 101 and the natural gas pipeline 102.

[0051] In this embodiment, as Figure 3 As shown, the hydrogen pipeline 101, natural gas pipeline 102, and oxygen pipeline 103 are each equipped with multiple diaphragm pressure devices 116, low-pressure switches 117, and high-pressure switches 118 in their middle sections. The low-pressure switch 117 is located between the pressure regulator 107 and the safety shut-off device 108, and the high-pressure switch 118 is located between the calorific value detector 109 and the safety shut-off device 108. The low-pressure and high-pressure switches can promptly transmit signals to the intelligent control device when the pipeline pressure exceeds the limit, enabling the safety shut-off device to respond in a timely manner. For example, the hydrogen pipeline 101 may include four diaphragm pressure devices 116: one diaphragm pressure device 116 is located between the pressure transmitter and the gas filter 106, one diaphragm pressure device 116 is located between the gas filter 106 and the pressure regulator 107, one diaphragm pressure device 116 is located between the pressure regulator 107 and the low-pressure switch 117, and one diaphragm pressure device 116 is located between the high-pressure switch 118 and the flow meter 110.

[0052] According to some preferred embodiments, gas leak detectors 114 are provided on the outside of hydrogen pipeline 101, oxygen pipeline 103 and natural gas pipeline 102. The gas leak detectors 114 are electrically connected to the intelligent control device 400. The gas leak detectors 114 are used to detect the amount of gas leakage in hydrogen pipeline 101, oxygen pipeline 103 and natural gas pipeline 102 and output electrical signals to the intelligent control device 400.

[0053] The intelligent control device 400 is electrically connected to the safety shut-off device 108 and is used to control the switching of the safety shut-off device 108 according to the electrical signal output by the gas leak detector 114.

[0054] In this embodiment, gas leak detectors 114 can be installed outside the hydrogen pipeline 101, oxygen pipeline 103, and natural gas pipeline 102, or outside the fiberglass furnace 300. The gas leak detectors 114 can detect the amount of gas leakage outside the pipeline or outside the fiberglass furnace 300 in real time and transmit the detection value to the intelligent control device 400. When the amount of gas leakage reaches the explosion limit range of natural gas and hydrogen, the intelligent control device 400 can promptly open the safety shut-off device 108 in the pipeline and issue an alarm. The explosion limit of natural gas is 5% to 15%, and the explosion limit of hydrogen is 4% to 75%.

[0055] According to some preferred embodiments, both the output end of the gas mixing pipe 104 and the output end of the oxygen pipe 103 are provided with a backfire prevention device 115, which is used to prevent the flame of the combustion gun 200 from spreading to the fuel delivery pipe 100.

[0056] In this embodiment, backfire prevention devices 115 are installed at the output ends of the gas mixing pipe 104 and the oxygen pipe 103 before they are connected to the combustion gun 200, respectively. These devices can prevent the flame in the combustion gun 200 from propagating backward and prevent safety issues from occurring.

[0057] like Figure 4 As shown, the present invention also provides a control method for the combustion system of the glass fiber tank furnace 300 described in any of the above claims, the control method comprising:

[0058] Natural gas, hydrogen, and oxygen are respectively transported into the glass fiber furnace 300 through the gas mixing pipe 104 and the oxygen pipe 103 in a preset ratio.

[0059] The gas in the glass fiber tank furnace 300 is ignited by the combustion gun 200 to heat the glass fiber tank furnace 300;

[0060] The intelligent control device 400 adjusts the flow rates of hydrogen, natural gas, and oxygen in the mixing pipeline 104 and the oxygen pipeline 103 respectively based on the electrical signal output by the glass fiber furnace 300.

[0061] In this embodiment, natural gas and hydrogen in a specific ratio are introduced into the mixing pipe 104 through the mixing device 1001. The oxygen in the oxygen pipe 103 and the natural gas and hydrogen in the mixing pipe 104 are transported to the glass fiber furnace 300 and ignited by the combustion gun 200. Combustion forms a flame to heat the glass fiber furnace 300. During the combustion process, the intelligent control device 400 can monitor the temperature and combustion atmosphere inside the glass fiber furnace 300 in real time and adjust the gas flow rate in the fuel delivery pipe 100, thereby achieving accurate control of the temperature regime and combustion atmosphere parameters inside the glass fiber furnace 300.

[0062] According to some preferred embodiments, the intelligent control device 400 adjusts the flow rates of hydrogen, natural gas, and oxygen in the mixing pipeline 104 and oxygen pipeline 103 respectively based on the electrical signal output from the glass fiber furnace 300, including:

[0063] The actual temperature and actual carbon monoxide, hydrogen and oxygen content in the glass fiber furnace 300 are detected by temperature detector 301 and gas detector 302 respectively. The actual temperature and actual gas content are converted into electrical signals and fed back to intelligent control device 400.

[0064] The intelligent control device 400 adjusts the flow rates of hydrogen, natural gas, and oxygen in the mixing pipeline 104 and oxygen pipeline 103 respectively based on the electrical signal, the preset temperature of the glass fiber furnace 300, and the preset combustion atmosphere of the glass fiber furnace 300.

[0065] In the glass fiber tank furnace production process, the temperature regime and combustion atmosphere within the glass fiber tank furnace 300 are crucial for the stable operation of the furnace. In this embodiment, a temperature detector 301 and a gas detector 302 are installed on the arch of the glass fiber tank furnace 300. During combustion, the temperature detector 301 and the gas detector 302 can detect the temperature and gas content within the glass fiber tank furnace 300 in real time and transmit the detected values ​​to the intelligent control device 400. The intelligent control device 400 can monitor the temperature and combustion atmosphere within the glass fiber tank furnace 300 in real time based on the values ​​transmitted by the temperature detector 301 and the gas detector 302. When the temperature and combustion atmosphere within the glass fiber tank furnace 300 do not match the preset temperature and preset combustion atmosphere, the intelligent control device 400 can adjust the flow rate of each gas in the fuel delivery pipeline 100 in real time, thereby further realizing the control of the temperature and combustion atmosphere of the glass fiber tank furnace 300.

[0066] According to some preferred embodiments, the gas flow rate in the mixing pipeline is adjusted using the following formula:

[0067] V = k × |T1 - T2|

[0068] In the formula, V is the gas flow rate in the mixing pipe, T1 is the actual temperature of the glass fiber furnace, T2 is the preset temperature of the glass fiber furnace, and k is a constant, ranging from 0.1 to 0.8.

[0069] In this embodiment, when the temperature of the glass fiber furnace 300 is controlled, the temperature detector 301 can transmit the detected actual temperature data inside the glass fiber furnace 300 to the intelligent control device 400. When the actual temperature is greater than the preset temperature, the intelligent control device 400 can reduce the flow supply by decreasing the opening of the natural gas and hydrogen flow regulators 112, while the opening of the oxygen flow regulator 112 is adjusted proportionally to the amount of natural gas and hydrogen reduction. When the actual temperature is less than the preset temperature, the intelligent control device 400 can increase the flow supply by increasing the opening of the natural gas and hydrogen flow regulators 112, while the opening of the oxygen flow regulator 112 is adjusted proportionally to the amount of natural gas and hydrogen increase.

[0070] In this embodiment, the gas flow rate in the mixing pipe 104 is adjusted according to the above formula. It is important to note that due to the response time of temperature changes in the glass fiber furnace 300, if it is necessary to quickly bring the temperature inside the glass fiber furnace 300 back to the set temperature, k can be 0.5. To prevent over-adjustment of the temperature, the maximum value of k should not exceed 0.8. Simultaneously, to achieve more precise temperature control of the glass fiber furnace 300, the range of parameter k can be dynamically adjusted according to the temperature difference during the actual temperature control process. When the absolute value of the difference between the actual temperature and the preset temperature inside the glass fiber furnace 300 is 0–50℃, k is 0.1–0.5; when the absolute value of the difference between the actual temperature and the preset temperature inside the glass fiber furnace 300 is greater than 50℃, k is 0.5–0.8. Through the above control methods, the temperature fluctuation inside the glass fiber furnace 300 can be controlled within ±0.5℃ (k is 0.1), resulting in a more precise and rapid temperature response for the entire combustion system.

[0071] According to some preferred embodiments, the hydrogen, natural gas, and oxygen in the gas mixing pipeline and the oxygen pipeline satisfy the following reaction equation:

[0072] mH2+(1-m)OH4+n*(2-1.5m)O2→(1-m)CO2+(2-m)H2O+(n-1)(2-1.5m)O2

[0073] In the formula, m is the volume percentage of hydrogen in the gas mixing pipe; when the combustion atmosphere of the glass fiber tank furnace is in a reducing state, n is 0.9 to 1; when the combustion atmosphere of the glass fiber tank furnace is in an oxidizing state, n is 1 to 1.15.

[0074] In this embodiment, the present invention mixes natural gas and hydrogen and uses pure oxygen for combustion. In actual use, carbon emissions are effectively reduced as the proportion of hydrogen added increases. When the intelligent control device 400 adjusts the natural gas, oxygen, and hydrogen in the mixing pipeline 104 and the oxygen pipeline 103, it must ensure that the hydrogen, natural gas, and oxygen contents in the glass fiber furnace 300 meet the above reaction equation. In this way, the combustion atmosphere inside the glass fiber furnace 300 can be controlled by adjusting the proportion of natural gas, hydrogen, and oxygen, thereby ensuring the stability of the glass fiber production process.

[0075] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0076] 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 them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A combustion system for a glass fiber tank furnace, characterized by, Includes a fuel delivery pipeline (100), a combustion lance (200), a glass fiber tank furnace (300), and an intelligent control device (400); wherein: The fuel delivery pipeline (100) includes a hydrogen pipeline (101), a natural gas pipeline (102), an oxygen pipeline (103), and a mixing pipeline (104). The output ends of the hydrogen pipeline (101) and the natural gas pipeline (102) are connected to the input end of the mixing pipeline (104) via a mixing device (1001). The output ends of the mixing pipeline (104) and the oxygen pipeline (103) are connected to the combustion gun (200). The input ends of the pipeline are connected to hydrogen, natural gas, and oxygen sources, respectively. The pressure of the hydrogen source is greater than that of the natural gas source. The middle of each hydrogen, natural gas, and oxygen pipeline is equipped with multiple diaphragm pressure gauges, low-pressure switches, and high-pressure switches. The low-pressure switch is located between the pressure regulator and the safety shut-off device, and the high-pressure switch is located between the calorific value detector and the safety shut-off device. The low-pressure and high-pressure switches can transmit signals to the intelligent control device in a timely manner after the pipeline pressure exceeds the limit, so that the safety shut-off device can respond promptly. The combustion gun (200) is located on the inner wall of the glass fiber tank furnace (300) and is used to ignite the gas in the gas mixing pipe (104) and the oxygen pipe (103) to heat the glass fiber tank furnace (300). The intelligent control device (400) is electrically connected to the fuel delivery pipeline (100) and the glass fiber furnace (300), and is used to adjust the flow rates of hydrogen, natural gas and oxygen in the gas mixing pipeline (104) and the oxygen pipeline (103) respectively according to the electrical signal output by the glass fiber furnace (300); the gas flow rate in the gas mixing pipeline is adjusted by the following formula: In the formula, V is the gas flow rate in the mixing pipe, T1 is the actual temperature of the glass fiber furnace, T2 is the preset temperature of the glass fiber furnace, and k is a constant, ranging from 0.1 to 0.

8. When the absolute value of the difference between the actual temperature and the preset temperature in the glass fiber furnace is 0 to 50℃, k is 0.1 to 0.5; when the absolute value of the difference between the actual temperature and the preset temperature in the glass fiber furnace is greater than 50℃, k is 0.5 to 0.

8. The hydrogen, natural gas, and oxygen in the gas mixing pipeline and the oxygen pipeline satisfy the following reaction equation: In the formula, m is the volume percentage of hydrogen in the gas mixing pipe; when the combustion atmosphere of the glass fiber furnace is in a reducing state, n is 0.9~1; when the combustion atmosphere of the glass fiber furnace is in an oxidizing state, n is 1~1.

15.

2. The system of claim 1, wherein, The glass fiber tank furnace (300) is equipped with a temperature detector (301) and a gas detector (302). The temperature detector (301) and the gas detector (302) are used to detect the temperature and oxygen content inside the glass fiber tank furnace (300) and output electrical signals to the intelligent control device (400). Along the input end to the output end, the middle of the hydrogen pipeline (101), the oxygen pipeline (103) and the natural gas pipeline (102) are each provided with a first pressure transmitter (105), a gas filter (106), a pressure regulator (107), a safety shut-off device (108), a calorific value detector (109), a flow meter (110), a second pressure transmitter (111) and a flow regulator (112).

3. The system of claim 2, wherein, The intelligent control device (400) is electrically connected to the temperature detector (301), the gas detector (302) and the flow regulator (112) respectively, and is used to control the flow regulator (112) according to the electrical signals output by the temperature detector (301) and the gas detector (302) to adjust the flow rates of hydrogen, natural gas and oxygen in the gas mixing pipeline (104) and the oxygen pipeline (103) respectively.

4. The system of claim 2, wherein, A one-way valve (113) is also provided in the middle of the hydrogen pipeline (101) and the natural gas pipeline (102). The one-way valve (113) is located between the gas mixing device (1001) and the flow regulator (112) to prevent gas backflow in the hydrogen pipeline (101) and the natural gas pipeline (102).

5. The system of claim 2, wherein, Gas leak detectors (114) are provided on the outside of the hydrogen pipeline (101), the oxygen pipeline (103), and the natural gas pipeline (102). The gas leak detectors (114) are electrically connected to the intelligent control device (400). The gas leak detectors (114) are used to detect the amount of gas leakage in the hydrogen pipeline (101), the oxygen pipeline (103), and the natural gas pipeline (102) and output electrical signals to the intelligent control device (400). The intelligent control device (400) is electrically connected to the safety shut-off device (108) and is used to control the switching of the safety shut-off device (108) according to the electrical signal output by the gas leak detector (114).

6. The system of claim 1, wherein, Both the output end of the gas mixing pipe (104) and the output end of the oxygen pipe (103) are provided with a backfire prevention device (115), which is used to prevent the flame of the combustion gun (200) from spreading to the fuel delivery pipe (100).

7. A method of controlling a combustion system of a glass fiber tank furnace (300) according to any one of claims 1 to 6, characterized in that, The control method includes: Natural gas, hydrogen, and oxygen are supplied to the glass fiber furnace (300) through the mixing pipe (104) and oxygen pipe (103) respectively according to the preset ratio; The gas in the glass fiber tank furnace (300) is ignited by a burner (200) to heat the glass fiber tank furnace (300). Based on the electrical signal output from the glass fiber furnace (300), the flow rates of hydrogen, natural gas, and oxygen in the mixing pipeline (104) and oxygen pipeline (103) are adjusted respectively; the gas flow rates in the mixing pipeline are adjusted using the following formula: In the formula, V is the gas flow rate in the mixing pipe, T1 is the actual temperature of the glass fiber furnace, T2 is the preset temperature of the glass fiber furnace, and k is a constant, ranging from 0.1 to 0.

8. When the absolute value of the difference between the actual temperature and the preset temperature in the glass fiber furnace is 0 to 50℃, k is 0.1 to 0.5; when the absolute value of the difference between the actual temperature and the preset temperature in the glass fiber furnace is greater than 50℃, k is 0.5 to 0.

8. The hydrogen, natural gas, and oxygen in the gas mixing pipeline and the oxygen pipeline satisfy the following reaction equation: In the formula, m is the volume percentage of hydrogen in the gas mixing pipe; when the combustion atmosphere of the glass fiber furnace is in a reducing state, n is 0.9~1; when the combustion atmosphere of the glass fiber furnace is in an oxidizing state, n is 1~1.

15.

8. The control method according to claim 7, characterized by, The step of adjusting the flow rates of hydrogen, natural gas, and oxygen in the mixing pipeline (104) and oxygen pipeline (103) respectively according to the electrical signal output from the glass fiber furnace (300) includes: The actual temperature and actual oxygen content in the glass fiber furnace (300) are detected by temperature detector (301) and gas detector (302) respectively, and the actual temperature and actual oxygen content are converted into electrical signals and fed back to the intelligent control device (400). Based on the electrical signal, the preset temperature of the glass fiber furnace (300), and the preset combustion atmosphere of the glass fiber furnace (300), the flow rates of hydrogen, natural gas, and oxygen in the mixing pipeline (104) and the oxygen pipeline (103) are adjusted respectively.

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