A natural gas valve train, supplemental combustion lance, and edge-fire combustion assist

Abstract

The utility model relates to glass production equipment technical field discloses a kind of natural gas valve group, auxiliary combustion lance and side fire combustion auxiliary device, natural gas valve group is used for photovoltaic glass kiln side fire, comprising: baking kiln pipeline and first side fire pipeline;By sequentially setting second valve body, pressure monitoring element, flow monitoring element and regulating valve body on first side fire pipeline, the import and export pressure and gas flow of side fire pipeline can be monitored and feedback adjusted in real time, the precision and stability of side fire gas supply are improved, to ensure the uniformity of calendering area lateral temperature;Through the closed-loop control design of flow monitoring element and regulating valve body, according to the flow variation dynamic adjustment natural gas supply, improve system response speed and adjustment sensitivity, while ensuring the uniformity of calendering area lateral temperature, improve product quality.

Description

Technical Field

[0001] This utility model relates to the field of glass production equipment technology, specifically to a natural gas valve assembly, an auxiliary combustion nozzle, and a side-fire combustion auxiliary device. Background Technology

[0002] As a crucial component of photovoltaic modules, the quality of photovoltaic glass directly impacts the module's photoelectric conversion efficiency and lifespan. The production process of photovoltaic glass typically includes two main stages: raw material production and further processing. Raw material production primarily involves steps such as material preparation, melting, rolling, annealing, and cutting to obtain unprocessed photovoltaic glass sheets. Subsequent further processing involves edge grinding, tempering, and coating on the raw sheets to meet the requirements of module encapsulation.

[0003] In the production of photovoltaic glass, the calendering section, as a crucial link connecting the melting and annealing sections, significantly impacts the quality of the glass sheets due to its operational stability and temperature uniformity. Especially during the calendering process within the calender, excessive lateral temperature differences in the glass sheets not only affect the consistency of their morphology but may also lead to abnormal stress distribution during annealing, thereby reducing the yield rate and even causing the finished products to be scrapped. Given the highly continuous nature of photovoltaic glass production, the entire production line typically operates 24 hours a day. Therefore, any temperature control imbalance or equipment malfunction in the calendering section could cause widespread product quality problems, potentially forcing the production line to shut down and resulting in substantial economic losses.

[0004] Currently, natural gas flame-assisted heating is commonly used in the rolling section for transverse temperature difference control. However, existing natural gas flame heating systems still have room for improvement in terms of control accuracy, adjustment response speed, and flame uniformity. This can easily lead to uneven transverse temperature distribution in the rolling area, which has an adverse effect on the forming of the glass sheet and subsequent annealing. Utility Model Content

[0005] In view of this, the present invention provides a natural gas valve assembly, an auxiliary combustion nozzle, and a side-fire combustion auxiliary device to solve the problem of uneven lateral temperature distribution in the calendering zone in the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] In a first aspect, this utility model provides a natural gas valve assembly for side-fired photovoltaic glass kilns, comprising: a kiln-fired pipe and a first side-fired pipe; the kiln-fired pipe having a first valve body; the first side-fired pipe and the first valve body being connected in parallel, the first end of the first side-fired pipe being connected to the inlet end of the kiln-fired pipe, and the second end of the first side-fired pipe being connected to the outlet end of the kiln-fired pipe; along the natural gas flow direction, the first side-fired pipe is sequentially provided with a second valve body, a first pressure monitoring element, a flow monitoring element, a regulating valve body, and a second pressure monitoring element; the second valve body is located near the first end, and the second pressure monitoring element is located near the second end; in the first side-fired state, the first valve body is closed, the second valve body is open, the first pressure monitoring element is adapted to monitor the inlet pressure parameter of the first side-fired pipe, the second pressure monitoring element is adapted to monitor the outlet pressure parameter of the first side-fired pipe, and the flow monitoring element is adapted to monitor the flow parameter of the first side-fired pipe and provide feedback to regulate the regulating valve body.

[0008] It has the following advantages: By sequentially installing a second valve body, pressure monitoring element, flow monitoring element, and regulating valve body on the first sidefire pipeline, the inlet and outlet pressure and gas flow of the sidefire pipeline can be monitored and adjusted in real time to improve the accuracy and stability of the sidefire gas supply and ensure the uniformity of the transverse temperature in the calendering area; the first and second valve bodies are installed on the kiln pipeline and the sidefire pipeline, and the configuration of "first valve body closed, second valve body open" is adopted in the first sidefire state, which can effectively prevent the sidefire gas supply from being affected when the kiln pipeline is abnormal, thereby enhancing the system's safety protection capability; through the closed-loop control design of the flow monitoring element and regulating valve body, the natural gas supply is dynamically adjusted according to the flow change, improving the system's response speed and adjustment sensitivity, while ensuring the uniformity of the transverse temperature in the calendering area and improving product quality.

[0009] According to a first aspect of the present invention, the first side-fire pipeline is further provided with a third valve body and a fourth valve body, the third valve body being disposed between the first pressure monitoring element and the flow monitoring element, and the fourth valve body being disposed between the regulating valve body and the second pressure monitoring element;

[0010] When the kiln is in operation, the first valve body is open, and the second, third, and fourth valve bodies are closed. The second pressure monitoring element is adapted to monitor the pressure parameters of the kiln pipeline during the kiln's operation.

[0011] According to a first aspect of the present invention, the natural gas valve assembly further includes a controller, wherein the first valve body, the second valve body, the third valve body, the fourth valve body, the flow monitoring element, and the regulating valve body are all communicatively connected to the controller.

[0012] According to a first aspect of the present invention, the first side-burning pipeline is further provided with a third pressure monitoring element and a shut-off valve. The third pressure monitoring element and the shut-off valve are both communicatively connected to the controller. The third pressure monitoring element is located at the rear end of the second pressure monitoring element and close to the second end. The shut-off valve is located between the flow monitoring element and the third valve body. The third pressure monitoring element is provided with a pressure threshold. In the first side-burning state, if the third pressure monitoring element detects that the pressure parameter exceeds the pressure threshold, the controller controls the shut-off valve to close, thereby ending the first side-burning state.

[0013] According to a first aspect of the present invention, the natural gas valve assembly further includes a second sidefire pipe, which is arranged in parallel with the first sidefire pipe. The second sidefire pipe has a third end and a fourth end. The third end is located at the rear end of the second valve body and communicates with the first sidefire pipe, and the fourth end is located at the front end of the third pressure monitoring element and communicates with the first sidefire pipe.

[0014] The second sidefire pipeline is equipped with a fifth valve body. In the second sidefire state, the first valve body, the third valve body and the fourth valve body are closed, and the second valve body and the fifth valve body are open. The second pressure monitoring element is adapted to monitor the pressure parameters of the second sidefire pipeline.

[0015] According to a first aspect of the present invention, the first valve body, the second valve body, the third valve body and the fourth valve body are all electric ball valves; the fifth valve body is a manual ball valve.

[0016] According to a first aspect of the present invention, the first pressure monitoring element and the second pressure monitoring element are field pressure gauges, and the third pressure monitoring element is a pressure sensor.

[0017] According to a first aspect of the present invention, the flow monitoring element is a flow sensor or a flow meter.

[0018] Secondly, this utility model also provides an auxiliary combustion spray gun, which is used for side fire combustion in photovoltaic glass kilns, including a spray gun body, wherein the air inlet end of the spray gun body is connected to a natural gas valve group.

[0019] Thirdly, this utility model also provides a side-fire combustion auxiliary device, including an auxiliary combustion spray gun. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a natural gas valve assembly provided in the first aspect embodiment of the present utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Kiln piping; 11. First valve body; 2. First side-fire piping; 21. Second valve body; 22. First pressure monitoring element; 23. Second pressure monitoring element; 24. Third pressure monitoring element; 25. Regulating valve body; 26. Flow monitoring element; 27. Third valve body; 28. Fourth valve body; 29. ​​Shut-off valve; 3. Second side-fire piping; 31. Fifth valve body. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] Reference Figure 1 As shown, in a first aspect of this utility model, a natural gas valve assembly is provided for side-fired operation in a photovoltaic glass kiln, comprising: a kiln firing pipe 1 and a first side-fired pipe 2; the kiln firing pipe 1 is provided with a first valve body 11; the first side-fired pipe 2 is connected in parallel with the first valve body 11, the first end of the first side-fired pipe 2 is connected to the inlet end of the kiln firing pipe 1, and the second end of the first side-fired pipe 2 is connected to the outlet end of the kiln firing pipe 1; along the natural gas flow direction, the first side-fired pipe 2 is sequentially provided with a second valve body 21, a first pressure monitoring element 22, and a flow... The system includes a flow monitoring element 26, a regulating valve body 25, and a second pressure monitoring element 23. The second valve body 21 is located near the first end, and the second pressure monitoring element 23 is located near the second end. In the first side-burning state, the first valve body 11 is closed, the second valve body 21 is open, the first pressure monitoring element 22 is adapted to monitor the inlet pressure parameter of the first side-burning pipe 2, the second pressure monitoring element 23 is adapted to monitor the outlet pressure parameter of the first side-burning pipe 2, and the flow monitoring parameter is adapted to monitor the flow parameter of the first side-burning pipe 2 and provide feedback to adjust the regulating valve body 25.

[0029] Specifically, by sequentially installing a second valve body 21, a pressure monitoring element, a flow monitoring element 26, and a regulating valve body 25 on the first sidefire pipeline 2, the inlet and outlet pressures and gas flow of the sidefire pipeline can be monitored and adjusted in real time to improve the accuracy and stability of the sidefire gas supply and ensure the uniformity of the transverse temperature in the calendering area. The first valve body 11 and the second valve body 21 are installed on the kiln pipeline 1 and the sidefire pipeline, and the configuration of "first valve body 11 closed and second valve body 21 open" is adopted in the first sidefire state, which can effectively prevent the sidefire gas supply from being affected when the kiln pipeline 1 is abnormal, thereby enhancing the system's safety protection capability. Through the closed-loop control design of the flow monitoring element 26 and the regulating valve body 25, the natural gas supply is dynamically adjusted according to the flow rate change, improving the system's response speed and adjustment sensitivity, while ensuring the uniformity of the transverse temperature in the calendering area and improving product quality.

[0030] In a first aspect of this utility model, the first side-fire pipe 2 is further provided with a third valve body 27 and a fourth valve body 28. The third valve body 27 is disposed between the first pressure monitoring element 22 and the flow monitoring element 26, and the fourth valve body 28 is disposed between the regulating valve body 25 and the second pressure monitoring element 23.

[0031] When the kiln is in operation, the first valve body 11 is open, and the second valve body 21, the third valve body 27 and the fourth valve body 28 are closed. The second pressure monitoring element 23 is adapted to monitor the pressure parameters of the kiln pipeline 1 when the kiln is in operation.

[0032] Specifically, by setting a third valve body 27 and a fourth valve body 28 on the first side fire pipeline 2, with the second valve body 21, the third valve body 27 and the fourth valve body 28 in the closed state, the first valve body 11 is opened, and natural gas flows through the kiln pipeline 1 to realize the kiln working state. Since the fourth valve body 28 is set between the regulating valve body 25 and the second pressure monitoring element 23, and the second pressure monitoring element 23 is located at the rear end, the second pressure monitoring element 23 is connected to the kiln pipeline 1 at this time. The second pressure monitoring element 23 can monitor the pressure parameters of the kiln pipeline 1 to ensure the stability and safety of the system.

[0033] Understandably, the parallel design of the side-fire pipeline and the kiln pipeline 1 allows the second pressure monitoring element 23 to monitor the pipeline pressure under different operating conditions, ensuring system stability and safety. The parallel structure makes the system compact, facilitating control, operation, installation, and subsequent maintenance, and reducing costs.

[0034] In a first aspect of this utility model, the natural gas valve assembly further includes a controller, and the first valve body 11, the second valve body 21, the third valve body 27, the fourth valve body 28, the flow monitoring element 26 and the regulating valve body 25 are all communicatively connected to the controller.

[0035] Specifically, by setting up a controller, automated control can be achieved, improving system response speed and adjustment sensitivity, and ensuring system stability and security.

[0036] In a first aspect embodiment of the present invention, the first side-burning pipe 2 is further provided with a third pressure monitoring element 24 and a shut-off valve 29. The third pressure monitoring element 24 and the shut-off valve 29 are both communicatively connected to the controller. The third pressure monitoring element 24 is located at the rear end of the second pressure monitoring element 23 and close to the second end. The shut-off valve 29 is located between the flow monitoring element 26 and the third valve body 27. The third pressure monitoring element 24 is provided with a pressure threshold. In the first side-burning state, if the third pressure monitoring element 24 detects that the pressure parameter exceeds the pressure threshold, the controller controls the shut-off valve 29 to close, thereby ending the first side-burning state.

[0037] Specifically, to ensure system safety, a third pressure monitoring element 24 is installed near the second end. The third pressure monitoring element 24 is connected to the controller and monitors the pressure parameters and feeds them back to the controller. Based on the comparison between the pressure parameters and the pressure threshold, when the pressure parameters are greater than the set pressure threshold, the controller controls the shut-off valve 29 to close, thereby blocking the flow of natural gas in the first side fire pipeline 2 to improve safety performance.

[0038] In a first aspect of the present invention, the natural gas valve assembly further includes a second sidefire pipe 3, which is connected in parallel with the first sidefire pipe 2. The second sidefire pipe 3 has a third end and a fourth end. The third end is located at the rear end of the second valve body 21 and communicates with the first sidefire pipe 2. The fourth end is located at the front end of the third pressure monitoring element 24 and communicates with the first sidefire pipe 2.

[0039] The second side-fire pipeline 3 is provided with a fifth valve body 31. In the second side-fire state, the first valve body 11, the third valve body 27 and the fourth valve body 28 are closed, and the second valve body 21 and the fifth valve body 31 are open. The second pressure monitoring element 23 is adapted to monitor the pressure parameters of the second side-fire pipeline 3.

[0040] Specifically, a second sidefire pipeline 3 is connected in parallel to the first sidefire pipeline 2. The second sidefire pipeline 3 is equipped with a fifth valve body 31. When a leak or control failure occurs in the first sidefire pipeline 2, the first valve body 11, the third valve body 27, and the fourth valve body 28 are closed, while the second valve body 21 and the fifth valve body 31 are opened. Since the third valve body is located at the rear end of the second valve body 21, natural gas flows through the second valve body 21, into the second sidefire pipeline 3, and then through the second pressure monitoring element 23, achieving the second sidefire state. This bypass configuration improves system reliability, ensures stable system operation, and reduces downtime costs during maintenance.

[0041] In a first aspect of this utility model, the first valve body 11, the second valve body 21, the third valve body 27 and the fourth valve body 28 are all electric ball valves; the fifth valve body 31 is a manual ball valve.

[0042] The fifth valve body 31 is configured as a manual ball valve, while the first valve body 11, the second valve body 21, the third valve body 27, and the fourth valve body 28 are configured as electric ball valves, ensuring efficient system operation while improving system stability and reliability.

[0043] In a first aspect of this utility model, the first pressure monitoring element 22 and the second pressure monitoring element 23 are field pressure gauges, and the third pressure monitoring element 24 is a pressure sensor.

[0044] In a first aspect of this utility model, the flow monitoring element 26 is a flow sensor or a flow meter.

[0045] Specifically, the first pressure monitoring element 22 and the second pressure monitoring element 23 are used to display the pipeline pressure, the third pressure monitoring element 24 is used to realize feedback and negative feedback regulation, and the flow monitoring element 26 is used for both display and feedback control regulation.

[0046] Secondly, this utility model also provides an auxiliary combustion spray gun, which is used for side fire combustion in photovoltaic glass kilns, including a spray gun body, wherein the air inlet end of the spray gun body is connected to a natural gas valve group.

[0047] Thirdly, this utility model also provides a side-fire combustion auxiliary device, including an auxiliary combustion spray gun.

[0048] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A natural gas valve assembly for use in the side fire of a photovoltaic glass kiln, characterized in that, include: The kiln pipe (1) is equipped with a first valve body (11); The first side-fire pipe (2) is arranged in parallel with the first valve body (11). The first end of the first side-fire pipe (2) is connected to the air inlet of the kiln pipe (1), and the second end of the first side-fire pipe (2) is connected to the air outlet of the kiln pipe (1). Along the natural gas flow direction, the first sidefire pipeline (2) is sequentially provided with a second valve body (21), a first pressure monitoring element (22), a flow monitoring element (26), a regulating valve body (25), and a second pressure monitoring element (23); the second valve body (21) is located near the first end, and the second pressure monitoring element (23) is located near the second end; In the first side-burning state, the first valve body (11) is closed and the second valve body (21) is open. The first pressure monitoring element (22) is adapted to monitor the inlet pressure parameter of the first side-burning pipe (2), the second pressure monitoring element (23) is adapted to monitor the outlet pressure parameter of the first side-burning pipe (2), and the flow monitoring element (26) is adapted to monitor the flow parameter of the first side-burning pipe (2) and provide feedback to adjust the regulating valve body (25).

2. The natural gas valve assembly according to claim 1, characterized in that, The first side-fire pipeline (2) is also provided with a third valve body (27) and a fourth valve body (28). The third valve body (27) is located between the first pressure monitoring element (22) and the flow monitoring element (26), and the fourth valve body (28) is located between the regulating valve body (25) and the second pressure monitoring element (23). When the kiln is in operation, the first valve body (11) is open, and the second valve body (21), the third valve body (27) and the fourth valve body (28) are closed. The second pressure monitoring element (23) is adapted to monitor the pressure parameters of the kiln pipeline (1) when the kiln is in operation.

3. The natural gas valve assembly according to claim 2, characterized in that, It also includes a controller, and the first valve body (11), the second valve body (21), the third valve body (27), the fourth valve body (28), the flow monitoring element (26) and the regulating valve body (25) are all communicatively connected to the controller.

4. The natural gas valve assembly according to claim 3, characterized in that, The first side-burning pipe (2) is also provided with a third pressure monitoring element (24) and a shut-off valve (29). The third pressure monitoring element (24) and the shut-off valve (29) are both connected to the controller. The third pressure monitoring element (24) is located at the rear end of the second pressure monitoring element (23) and close to the second end. The shut-off valve (29) is located between the flow monitoring element (26) and the third valve body (27). The third pressure monitoring element (24) is provided with a pressure threshold. In the first side-burning state, if the third pressure monitoring element (24) detects that the pressure parameter exceeds the pressure threshold, the controller controls the shut-off valve (29) to close, so as to end the first side-burning state.

5. The natural gas valve assembly according to claim 4, characterized in that, It also includes a second sidefire pipe (3), which is connected in parallel with the first sidefire pipe (2). The second sidefire pipe (3) has a third end and a fourth end. The third end is located at the rear end of the second valve body (21) and is connected to the first sidefire pipe (2). The fourth end is located at the front end of the third pressure monitoring element (24) and is connected to the first sidefire pipe (2). The second sidefire pipe (3) is provided with a fifth valve body (31). In the second sidefire state, the first valve body (11), the third valve body (27) and the fourth valve body (28) are closed, and the second valve body (21) and the fifth valve body (31) are open. The second pressure monitoring element (23) is suitable for monitoring the pressure parameters of the second sidefire pipe (3).

6. The natural gas valve assembly according to claim 5, characterized in that, The first valve body (11), the second valve body (21), the third valve body (27) and the fourth valve body (28) are all electric ball valves; the fifth valve body (31) is a manual ball valve.

7. The natural gas valve assembly according to claim 4, characterized in that, The first pressure monitoring element (22) and the second pressure monitoring element (23) are field pressure gauges, and the third pressure monitoring element (24) is a pressure sensor.

8. The natural gas valve assembly according to claim 1, characterized in that, The flow monitoring element (26) is a flow sensor or a flow meter.

9. An auxiliary combustion spray gun, used for side-fire combustion in a photovoltaic glass kiln, characterized in that, It includes a spray gun body, the air inlet of which is connected to the natural gas valve assembly according to any one of claims 1-8.

10. A side-fire combustion auxiliary device, characterized in that, Includes the auxiliary combustion spray gun as described in claim 9.

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