Photovoltaic glass edge fire combustion auxiliary device and control method thereof

Abstract

The invention discloses a photovoltaic glass side fire combustion auxiliary device and a control method thereof.The side fire combustion auxiliary device is applied between a kiln and an annealing kiln and comprises a controller and a natural gas side fire combustion auxiliary assembly, and the natural gas side fire combustion auxiliary assembly comprises a first gas uniform distributor; a gas inlet of the first gas uniform distributor is communicated with a gas pipeline; a gas outlet of the first gas uniform distributor is communicated with a first gas conveying branch pipe, one end, deviating from the first gas uniform distributor, of the first gas conveying branch pipe is communicated with a burner, and the burner is used for heating the transverse side of the raw glass sheet; and the first gas transmission branch pipe is provided with a first ball valve electrically connected with the controller. The invention can ensure that the production does not need to be interrupted when the calender has a fault that the temperature difference between the transverse side and the middle part of the raw glass sheet is relatively large.

Description

Technical Field

[0001] The invention relates to the technical field of glass production and manufacturing, and in particular to a photovoltaic glass edge fire combustion auxiliary device and a control method thereof. Background Art

[0002] Photovoltaic glass is a special glass that can generate electricity using solar radiation by pressing solar photovoltaic modules into it, and has relevant current extraction devices and cables. Photovoltaic glass is usually prepared by calendering. Its production process is mainly divided into two links: raw sheet production and deep processing. Raw sheet production is to obtain unprocessed photovoltaic raw sheet semi-finished products after the raw materials are mixed, melted, calendered, annealed and cut in five steps, and then deep processing is carried out.

[0003] The production of raw glass includes five processes: batching, melting, forming, annealing, and edge detection. Among them, melting, forming, and annealing are the core links of the raw glass production line. Any problem in any link will affect the quality and production rate of the product. The continuity of glass production is very strong. The finished photovoltaic glass products with poor quality need to be remelted and remade, which will bring additional costs to the production company. The normal production of raw glass products is 24 hours a day and cannot be stopped. If the product quality is unstable, the production will not be able to proceed normally.

[0004] Before the original glass sheet is transported to the annealing furnace for the annealing process, it is necessary to carry out the calendering process in the kiln. The calendering process is mainly completed in the calender. The performance of the calender and the control of the lateral temperature difference are the decisive factors for the quality of this process. At present, in the production of photovoltaic glass sheets, when the calender fails and causes a large temperature difference between the lateral side and the middle of the original glass sheet, the original glass sheet that has passed the calendering process will still be directly transported to the annealing furnace for annealing, resulting in insufficient quality of the finished glass. At this time, production needs to be interrupted, resulting in great losses. Therefore, there is an urgent need for an edge fire combustion auxiliary device that can intelligently compensate for the temperature of the lateral side of the calendered original glass sheet. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that there is a lack of an edge fire combustion auxiliary device that can intelligently compensate for the temperature of the rolled glass sheet along the lateral side, thereby providing a photovoltaic glass edge fire combustion auxiliary device and a control method thereof.

[0006] According to a first aspect of the present invention, a photovoltaic glass edge fire combustion auxiliary device is provided, which is applied between a kiln and an annealing kiln. The edge fire combustion auxiliary device comprises a controller and a natural gas edge fire combustion auxiliary component. The edge fire combustion auxiliary component comprises:

[0007] A first gas uniform distributor, the gas inlet of which is connected to a gas pipeline;

[0008] The first gas branch pipe is connected to the gas outlet of the first gas uniform distributor, and the end of the first gas branch pipe away from the first gas uniform distributor is connected to a burner, and the burner is used to heat the lateral side of the glass sheet; the first gas branch pipe is provided with a first ball valve, and the first ball valve is electrically connected to the controller.

[0009] A photovoltaic glass edge fire combustion auxiliary device according to the present invention has at least the following technical effects:

[0010] A burner is arranged between the kiln and the annealing kiln, and the burner is connected to the outlet of the first gas distributor through a first gas supply branch pipe with a first ball valve. When a calender fails and causes a temperature difference between the lateral side and the middle of the glass sheet to be too large, the controller can flexibly adjust the opening of the first ball valve according to the actual temperature difference, that is, control the amount of gas delivered to the burner per unit time, thereby adjusting the heat output by the burner to the lateral side of the glass sheet, performing heat compensation on the lateral side of the glass sheet so that the temperature of the lateral side of the glass sheet rises, and reducing the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet to meet the annealing requirements, ensuring that when a calender fails and causes a large temperature difference between the lateral side and the middle of the glass sheet, there is no need to interrupt production, thereby ensuring the continuity of production and avoiding large economic losses. A first gas distributor is connected between the first gas branch pipe of the natural gas edge fire combustion auxiliary component and the gas pipeline. The first gas distributor can evenly distribute the gas entering from the air inlet over the entire cross-section of the first gas distributor, thereby stabilizing the gas before entering the first gas branch pipe, ensuring that the burner stably outputs the set heat to the lateral side of the glass sheet, thereby ensuring that the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet is reduced to meet the annealing requirements.

[0011] Preferably, a plurality of gas outlets of the first gas uniform distributor are provided, and the gas outlets of the plurality of the first gas uniform distributors are connected to the corresponding first gas supply branch pipes, and the end of each of the first gas supply branch pipes away from the first gas uniform distributor is connected to the burner, and the plurality of burners are arranged at intervals along the conveying direction of the glass sheet, and the conveying direction is perpendicular to the horizontal direction.

[0012] Preferably, it also includes a compressed air edge fire combustion auxiliary component, and the compressed air edge fire combustion auxiliary component includes:

[0013] A second gas uniform distributor, the air inlet of which is connected to a compressed air pipeline;

[0014] Multiple second gas branch pipes have one end connected one-to-one with the multiple gas outlets of the second gas uniform distributor, and the other end connected with the multiple burners; each of the second gas branch pipes is provided with a second ball valve, and the second ball valve is electrically connected to the controller.

[0015] Preferably, the air inlet of the first gas uniform distributor is connected to the gas pipeline through a first air inlet pipeline, and a third ball valve is provided on the first air inlet pipeline, and the third ball valve is used to control the on-off of the first air inlet pipeline;

[0016] And / or, the air inlet of the second gas uniform distributor is connected to the compressed air pipeline through a second air inlet pipeline, and a fourth ball valve is provided on the second air inlet pipeline, and the fourth ball valve is used to control the opening and closing of the second air inlet pipeline.

[0017] Preferably, it also includes an installation cavity arranged under the ground, and one end of the first air inlet pipeline for connecting with the gas pipeline is hidden and embedded in the installation cavity;

[0018] And / or, it also includes an installation cavity arranged under the ground, and one end of the second air inlet pipeline used for connecting to the compressed air pipeline is hidden and embedded in the installation cavity.

[0019] Preferably, the first gas uniform distributor is provided with a first detection interface, and the detection interface is provided with a first pressure gauge;

[0020] And / or, the second gas uniform distributor is provided with a second detection interface, and the second detection interface is provided with a second pressure gauge.

[0021] Preferably, the first detection interface and the first pressure gauge are connected via a first branch pipe, and a first stop valve is provided on the first branch pipe, and the first stop valve is used to control the on and off of the first branch pipe;

[0022] The second detection interface and the second pressure gauge are connected via a second branch pipe, and a second stop valve is provided on the second branch pipe. The second stop valve is used to control the on and off of the second branch pipe.

[0023] Preferably, a first check valve is provided on the first gas transmission branch pipe;

[0024] And / or, a second check valve is provided on the second gas transmission branch pipe.

[0025] Preferably, six first gas transmission branch pipes are provided.

[0026] A control method provided according to the second aspect of the present invention is applied to the photovoltaic glass edge fire combustion auxiliary device provided in the first aspect, and the control method comprises the following steps:

[0027] Obtaining a first temperature difference between a lateral side and a middle portion of a glass sheet output from a furnace;

[0028] The controller compares the first temperature difference with the first standard temperature difference to obtain a first compensation adjustment value, and controls the opening of the first ball valve of the natural gas edge fire combustion auxiliary component according to the first compensation adjustment value.

[0029] A control method according to the present invention has at least the following technical effects:

[0030] A burner is arranged between the kiln and the annealing kiln, and the burner is connected to the outlet of the first gas distributor through a first gas supply branch pipe with a first ball valve. When a calender fails and causes a temperature difference between the lateral side of the glass sheet and the middle of the glass sheet to be too large, the controller compares the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet with the first standard temperature difference to obtain a first compensation adjustment value, and flexibly adjusts the opening of the first ball valve according to the first compensation adjustment value, that is, controls the amount of gas delivered to the burner per unit time, thereby adjusting the heat output by the burner to the lateral side of the glass sheet, performs heat compensation on the lateral side of the glass sheet so that the temperature of the lateral side of the glass sheet rises, and reduces the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet to meet the annealing requirements, ensuring that there is no need to interrupt production when a calender fails and causes a large temperature difference between the lateral side and the middle of the glass sheet, thereby ensuring the continuity of production and avoiding large economic losses. A first gas distributor is connected between the first gas branch pipe of the natural gas edge fire combustion auxiliary component and the gas pipeline. The first gas distributor can evenly distribute the gas entering from the air inlet over the entire cross-section of the first gas distributor, thereby stabilizing the gas before entering the first gas branch pipe, ensuring that the burner stably outputs the set heat to the lateral side of the glass sheet, thereby ensuring that the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet is reduced to meet the annealing requirements.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1It is a schematic structural diagram of a natural gas edge fire combustion auxiliary component in a photovoltaic glass edge fire combustion auxiliary device of this embodiment.

[0034] Description of reference numerals:

[0035] 1-first gas uniform distributor, 11-first detection interface;

[0036] 2-first gas transmission branch pipe, 21-first ball valve, 22-first check valve;

[0037] 3-first air intake pipeline, 31-third ball valve;

[0038] 4-ground, 41-installation cavity;

[0039] 5-First pressure gauge;

[0040] 6-first branch pipe, 61-first stop valve. DETAILED DESCRIPTION

[0041] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0045] Embodiment 1

[0046] like Figure 1 The present embodiment shows a photovoltaic glass edge fire combustion auxiliary device, which is applied between a kiln and an annealing kiln. The edge fire combustion auxiliary device includes a controller and a natural gas edge fire combustion auxiliary component. The natural gas edge fire combustion auxiliary component includes a first gas uniform distributor 1, and the air inlet of the first gas uniform distributor 1 is connected to a gas pipeline; the air outlet of the first gas uniform distributor 1 is connected to a first gas branch pipe 2, and the end of the first gas branch pipe 2 away from the first gas uniform distributor 1 is connected to a burner, and the burner is used to heat the lateral side of the glass sheet; the first gas branch pipe 2 is provided with a first ball valve 21, and the first ball valve 21 is electrically connected to the controller. The conveying direction described in the text is perpendicular to the lateral direction, and the conveying direction and the lateral direction are located in the same horizontal plane. The conveying direction refers to Figure 1 The conveying direction in.

[0047] The edge fire combustion auxiliary device of this embodiment is provided with a burner between the kiln and the annealing kiln, and the burner is connected to the outlet of the first gas uniform distributor 1 through the first gas supply branch pipe 2 with the first ball valve 21. When the calender fails and the temperature difference between the lateral side and the middle of the glass sheet is too large, the controller can flexibly adjust the opening of the first ball valve 21 according to the actual temperature difference, that is, control the amount of gas delivered to the burner per unit time, thereby adjusting the heat output by the burner to the lateral side of the glass sheet, performing heat compensation on the lateral side of the glass sheet so that the temperature of the lateral side of the glass sheet rises, and reducing the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet to meet the requirements of high-quality annealing, ensuring that there is no need to interrupt production when the calender fails and the temperature difference between the lateral side and the middle of the glass sheet is large, thereby ensuring the continuity of production and avoiding large economic losses. A first gas even distributor 1 is connected between the first gas branch pipe 2 of the natural gas edge fire combustion auxiliary component and the gas pipeline. The first gas even distributor 1 can evenly distribute the gas entering from the gas inlet over the entire cross-section of the first gas even distributor 1, thereby stabilizing the gas before entering the first gas branch pipe 2, ensuring that the burner stably outputs the set heat to the lateral side of the glass sheet, thereby ensuring that the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet is reduced to meet the requirements of high-quality annealing.

[0048] Optionally, the first gas uniform distributor 1 is provided with multiple gas outlets, and the multiple gas outlets of the first gas uniform distributor 1 are connected to a corresponding first gas branch pipe 2, and each of the first gas branch pipes 2 is connected to a burner at one end away from the first gas uniform distributor 1, and the multiple burners are arranged at intervals along the conveying direction of the glass sheet. By arranging multiple gas outlets at intervals along the conveying direction of the glass sheet on the first gas uniform distributor 1, and each gas outlet is connected to a burner through a first gas supply branch pipe 2 with a first ball valve 21. When a malfunction of the calender causes a large temperature difference between the lateral side and the middle of the glass sheet, the controller can flexibly adjust the opening of the first ball valve 21 located at different positions along the conveying direction according to the actual temperature difference, that is, control the amount of gas delivered to the burner per unit time, thereby adjusting the heat output by the burner to the lateral side of the glass sheet, performing heat compensation on the lateral side of the glass sheet so that the temperature of the lateral side of the glass sheet rises, and reducing the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet to meet the requirements of high-quality annealing, ensuring that there is no need to interrupt production when a malfunction of the calender causes a large temperature difference between the lateral side and the middle of the glass sheet, thereby ensuring the continuity of production and avoiding large economic losses. A first gas evenly distributed device 1 is also connected between multiple first gas branch pipes 2 of the natural gas edge fire combustion auxiliary component and the gas pipeline. The first gas evenly distributed device 1 can evenly distribute the gas entering from the gas inlet over the entire cross-section of the first gas evenly distributed device 1, thereby stabilizing the gas before entering each first gas branch pipe 2, and ensuring that the amount of gas delivered to the first gas branch pipes 2 located at different positions along the delivery direction is basically the same, ensuring that the burners located at different positions along the delivery direction stably output the same amount of heat to the lateral side of the glass sheet, thereby ensuring that the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet is reduced to meet the requirements of high-quality annealing.

[0049] It can be understood that when the temperature difference between the lateral side of the glass sheet output from the kiln and the middle of the glass sheet exceeds the standard temperature difference for ensuring annealing quality by a smaller amount, the first ball valves 21 of some of the first gas branch pipes 2 of the natural gas edge fire combustion auxiliary assembly can be closed, and only the first ball valves 21 of some of the first gas branch pipes 2 are left open at the set opening; when the temperature difference between the lateral side of the glass sheet output from the kiln and the middle of the glass sheet exceeds the standard temperature difference for ensuring annealing quality by a larger amount, all the first ball valves 21 of the natural gas edge fire combustion auxiliary assembly can be opened at the set opening.

[0050] It is understandable that existing photovoltaic glass is formed by calendering. The molten glass flows out from the branch lip brick of the kiln into the calender. The calender squeezes the solid glass sheet through two calender rollers. Since the temperature in the middle of the molten glass is high and the temperature on both sides is low when it flows out, it is bound to cause a lateral temperature difference. During the cooling process of the glass sheet in the annealing kiln, it is also necessary to ensure that the lateral temperature difference of the glass sheet is small to facilitate the annealing of the glass. If the temperature difference between the lateral side and the middle of the glass sheet is large, annealing in the annealing kiln will have a fatal impact on the final quality of the glass.

[0051] Optionally, the edge fire combustion auxiliary device also includes a compressed air edge fire combustion auxiliary component, and the compressed air edge fire combustion auxiliary component includes a second gas distributor, and the air inlet of the second gas distributor is connected to a compressed air pipeline; the number of the air outlets of the second gas distributor is the same as the number of the burners, and the air outlet of the second gas distributor is connected to the corresponding burner through a second gas branch pipe, and the second gas branch pipe is provided with a second ball valve, and the second ball valve is electrically connected to the controller. By arranging multiple air outlets at intervals along the conveying direction of the glass sheet on the second gas uniform distributor, and each air outlet of the second gas uniform distributor is connected to a burner through a second gas supply branch pipe with a second ball valve. When a malfunction of the calender causes a large temperature difference between the lateral side and the middle of the glass sheet, the controller can flexibly adjust the opening of the second ball valve located at different positions along the conveying direction according to the actual temperature difference, that is, control the amount of compressed air delivered to the burner per unit time, adjust the combustion state of the burner, and thus adjust the heat output by the burner to the lateral side of the glass sheet, perform heat compensation on the lateral side of the glass sheet so that the temperature of the lateral side of the glass sheet rises, and reduce the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet to meet the requirements of high-quality annealing, ensuring that production does not need to be interrupted when a malfunction of the calender causes a large temperature difference between the lateral side and the middle of the glass sheet, thereby ensuring the continuity of production and avoiding large economic losses. A second gas uniform distributor is also connected between multiple second gas branch pipes of the compressed air edge fire combustion auxiliary component and the compressed air pipeline. The second gas uniform distributor can evenly distribute the compressed air entering from the air inlet over the entire cross-section of the second gas uniform distributor, thereby stabilizing the compressed air before entering each second gas branch pipe, and ensuring that the compressed air delivered to the second gas branch pipes located at different positions along the conveying direction is basically the same, ensuring that the burners located at different positions along the conveying direction stably output the same heat to the lateral side of the glass sheet, thereby ensuring that the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet is reduced to meet the requirements of high-quality annealing.

[0052] Optionally, six first gas delivery branches 2 are provided. According to actual needs, the first ball valves 21 of one, two, three, four, five or six first gas delivery branches 2 of the natural gas edge fire combustion auxiliary component can be opened according to a set opening to meet different heat compensation requirements and have a wider range of applications.

[0053] In specific applications, the number of first gas branch pipes 2 can be reasonably increased or decreased according to different heat compensation requirements. For example, in other embodiments, the natural gas edge fire combustion auxiliary component is provided with two, three, four, five or seven other numbers of first gas branch pipes 2.

[0054] Optionally, six second gas delivery branches are provided. According to actual needs, the second ball valves of one, two, three, four, five or six second gas delivery branches of the compressed air edge fire combustion auxiliary assembly can be opened according to a set opening to meet different heat compensation requirements and have a wider range of applications.

[0055] In specific applications, the number of second gas branches can be reasonably increased or decreased according to different heat compensation requirements. For example, in other embodiments, the compressed air edge fire combustion auxiliary component is provided with two, three, four, five or seven other numbers of second gas branches.

[0056] Optionally, the air inlet of the first gas distributor 1 is connected to the gas pipeline through the first air inlet pipeline 3, and the first air inlet pipeline 3 is provided with a third ball valve 31, and the third ball valve 31 is used to control the on-off of the first air inlet pipeline 3. When there is no need to perform heat compensation on the lateral side of the original glass sheet, the third ball valve 31 is closed to disconnect the first air inlet pipeline 3, ensuring that the gas in the gas pipeline will not be delivered to the first gas distributor 1, so that the edge fire combustion auxiliary device of this embodiment can be reliably and accurately switched to the closed state. It is also possible to control the opening of the third ball valve 31 when performing heat compensation on the lateral side of the original glass sheet, so as to control the amount of gas delivered to the first gas distributor 1 per unit time, thereby adjusting the heat output by the burner to the lateral side of the original glass sheet to meet different temperature compensation requirements.

[0057] Optionally, the air inlet of the second gas distributor is connected to the compressed air pipeline through the second air inlet pipeline, and a fourth ball valve is provided on the second air inlet pipeline, and the fourth ball valve is used to control the on-off of the second air inlet pipeline. When there is no need to perform heat compensation on the lateral side of the glass sheet, the fourth ball valve is closed to disconnect the second air inlet pipeline, ensuring that the compressed air in the compressed air pipeline will not be delivered to the second gas distributor, so that the edge fire combustion auxiliary device of this embodiment can be reliably and accurately switched to the closed state. It is also possible to control the opening of the fourth ball valve when performing heat compensation on the lateral side of the glass sheet, thereby controlling the amount of compressed air delivered to the second gas distributor per unit time, thereby adjusting the heat output by the burner to the lateral side of the glass sheet to meet different temperature compensation requirements.

[0058] Optionally, the edge-fire combustion auxiliary device further includes an installation cavity 41 disposed under the ground 4, and one end of the first air intake pipeline 3 used for connecting to the gas pipeline is hidden and embedded in the installation cavity 41, and one end of the second air intake pipeline used for connecting to the compressed air pipeline is hidden and embedded in the installation cavity 41. In this arrangement, the gas pipeline and the compressed air pipeline are both arranged under the ground 4, and the end of the first air intake pipeline 3 connected to the gas pipeline and the end of the second air intake pipeline connected to the compressed air pipeline are both hidden and arranged under the ground 4, which can avoid occupying the layout space of the air duct and water pipe of other processes and optimize the layout space.

[0059] Optionally, the first gas distributor 1 is provided with a first detection interface 11, and the first detection interface 11 is provided with a first pressure gauge 5; the second gas distributor is provided with a second detection interface, and the second detection interface is provided with a second pressure gauge. The first pressure gauge 5 and the second pressure gauge respectively display the pressure inside the first gas distributor 1 and the second gas distributor, so that the operator can observe and detect whether there are leakage problems in the first gas distributor 1 and the second gas distributor, and adjust the pressure ratio of the gas pipeline and the compressed air pipeline.

[0060] Optionally, the first detection interface 11 and the first pressure gauge 5 are connected via a first branch pipe 6, and a first stop valve 61 is provided on the first branch pipe 6, and the first stop valve 61 is used to control the on and off of the first branch pipe 6. When the first pressure gauge 5 is damaged and the first pressure gauge 5 is removed for repair or replacement, the first stop valve 61 can be closed to disconnect the first branch pipe 6, effectively preventing the gas in the first gas uniform distributor 1 from leaking to the outside through the first branch pipe 6 during the process of removing the first pressure gauge 5 for repair or replacement.

[0061] Optionally, the second detection interface and the second pressure gauge are connected via a second branch pipe, and a second stop valve is provided on the second branch pipe, and the second stop valve is used to control the on and off of the second branch pipe. When the second pressure gauge is damaged and the second pressure gauge is removed for repair or replacement, the second stop valve can be closed to disconnect the second branch pipe, effectively preventing the compressed air in the gas uniform distributor from leaking to the outside through the second branch pipe during the process of removing the second pressure gauge for repair or replacement.

[0062] Optionally, a first check valve 22 is provided on the first gas branch pipe 2. The first check valve 22 can prevent the gas from flowing back or reversely from the burner through the first gas branch pipe 2 to the first gas distributor 1, ensuring that the gas can only flow in one direction in the first gas branch pipe 2, ensuring the safety and stability of the edge fire combustion auxiliary device of this embodiment.

[0063] Optionally, a second check valve is provided on the second gas branch pipe. The second check valve can prevent the compressed air from flowing back or counter-flowing from the burner through the second gas branch pipe to the second gas uniform distributor, ensuring that the compressed air can only flow in one direction in the second gas branch pipe, thereby ensuring the safety and stability of the edge fire combustion auxiliary device of this embodiment.

[0064] Specifically, the edge fire combustion auxiliary device also includes a conveying assembly for connecting the kiln and the annealing furnace, and the conveying assembly is used to convey the glass sheet from the outlet of the kiln to the inlet of the annealing furnace; the two edge fire combustion auxiliary assemblies are arranged on both sides of the conveying assembly in a lateral direction. The glass sheet output from the kiln is automatically conveyed to the annealing furnace by the conveying assembly, and in this process, the lateral side heating of the glass sheet is coordinated by the natural gas edge fire combustion auxiliary assembly and the compressed air edge fire combustion auxiliary assembly to compensate for the heat, so that the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet is restored to meet the requirements of high-quality annealing. More specifically, the conveying assembly is configured as a roller conveyor.

[0065] Embodiment 2

[0066] like Figure 1 A control method provided in this embodiment is shown, which is applied to the photovoltaic glass edge fire combustion auxiliary device described in Example 1. The control method includes the following steps:

[0067] Obtaining a first temperature difference between a lateral side and a middle portion of a glass sheet output from a furnace;

[0068] The controller compares the first temperature difference with the first standard temperature difference to obtain a first compensation adjustment value, and controls the opening of the first ball valve 21 of the natural gas edge fire combustion auxiliary component according to the first compensation adjustment value.

[0069] The control method of this embodiment is achieved by arranging a burner between the kiln and the annealing kiln, and the burner is connected to the outlet of the first gas uniform distributor 1 through a first gas supply branch pipe 2 with a first ball valve 21. When a calender fails and causes the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet to be too large, the controller compares the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet with the first standard temperature difference to obtain a first compensation adjustment value, and flexibly adjusts the opening of the first ball valve 21 according to the first compensation adjustment value, that is, controls the amount of gas delivered to the burner per unit time, thereby adjusting the heat output by the burner to the lateral side of the glass sheet, performing heat compensation on the lateral side of the glass sheet so that the temperature of the lateral side of the glass sheet rises, and reducing the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet to meet the requirements of high-quality annealing, ensuring that there is no need to interrupt production when a calender fails and causes a large temperature difference between the lateral side and the middle of the glass sheet, thereby ensuring the continuity of production and avoiding large economic losses. A first gas even distributor 1 is connected between the first gas branch pipe 2 of the natural gas edge fire combustion auxiliary component and the gas pipeline. The first gas even distributor 1 can evenly distribute the gas entering from the gas inlet over the entire cross-section of the first gas even distributor 1, thereby stabilizing the gas before entering the first gas branch pipe 2, ensuring that the burner stably outputs the set heat to the lateral side of the glass sheet, thereby ensuring that the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet is reduced to meet the requirements of high-quality annealing.

[0070] Specifically, the first standard temperature difference refers to the temperature difference between the lateral side and the middle of the glass sheet that meets the high-quality annealing requirements.

[0071] It should be noted that the lateral side temperature and the middle temperature of the glass sheet output from the kiln are respectively detected by the first temperature sensor and the second temperature sensor, and the first temperature sensor and the second temperature sensor respectively transmit the two measured temperature values ​​to the controller, and the controller calculates the first temperature difference based on the two temperature values.

[0072] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A photovoltaic glass edge fire combustion auxiliary device, used between a kiln and an annealing kiln, characterized in that: The edge fire combustion auxiliary device comprises a controller and a natural gas edge fire combustion auxiliary component, and the natural gas edge fire combustion auxiliary component comprises: A first gas uniform distributor (1), the gas inlet of which is connected to a gas pipeline; The first gas branch pipe (2) is connected to the gas outlet of the first gas uniform distributor (1); one end of the first gas branch pipe (2) away from the first gas uniform distributor (1) is connected to a burner, and the burner is used to heat the lateral side of the glass sheet; the first gas branch pipe (2) is provided with a first ball valve (21), and the first ball valve (21) is electrically connected to the controller.

2. A photovoltaic glass edge fire combustion auxiliary device according to claim 1, characterized in that: The first gas uniform distributor (1) is provided with a plurality of gas outlets, and the plurality of gas outlets of the first gas uniform distributor (1) are connected to corresponding first gas supply branch pipes (2), and one end of each first gas supply branch pipe (2) away from the first gas uniform distributor (1) is connected to the burner, and the plurality of burners are arranged at intervals along the conveying direction of the glass sheet, and the conveying direction is perpendicular to the transverse direction.

3. A photovoltaic glass edge fire combustion auxiliary device according to claim 2, characterized in that: It also includes a compressed air edge fire combustion auxiliary component, the compressed air edge fire combustion auxiliary component includes: A second gas uniform distributor, the air inlet of which is connected to a compressed air pipeline; Multiple second gas branch pipes have one end connected one-to-one with the multiple gas outlets of the second gas uniform distributor, and the other end connected with the multiple burners; each of the second gas branch pipes is provided with a second ball valve, and the second ball valve is electrically connected to the controller.

4. The photovoltaic glass edge fire combustion auxiliary device according to claim 3, characterized in that: The air inlet of the first gas uniform distributor (1) is connected to the fuel gas pipeline via a first air inlet pipeline (3); a third ball valve (31) is provided on the first air inlet pipeline (3); the third ball valve (31) is used to control the on-off of the first air inlet pipeline (3); And / or, the air inlet of the second gas uniform distributor is connected to the compressed air pipeline through a second air inlet pipeline, and a fourth ball valve is provided on the second air inlet pipeline, and the fourth ball valve is used to control the opening and closing of the second air inlet pipeline.

5. The photovoltaic glass edge fire combustion auxiliary device according to claim 4, characterized in that: It also comprises an installation cavity (41) arranged under the ground (4), and one end of the first air inlet pipeline (3) for connecting to the gas pipeline is concealed and embedded in the installation cavity (41); And / or, it also includes an installation cavity (41) arranged under the ground (4), and one end of the second air inlet pipeline for connecting to the compressed air pipeline is hidden and embedded in the installation cavity (41).

6. The photovoltaic glass edge fire combustion auxiliary device according to claim 3, characterized in that: The first gas uniform distributor (1) is provided with a first detection interface (11), and the first detection interface (11) is provided with a first pressure gauge (5); And / or, the second gas uniform distributor is provided with a second detection interface, and the second detection interface is provided with a second pressure gauge.

7. The photovoltaic glass edge fire combustion auxiliary device according to claim 6, characterized in that: The first detection interface (11) and the first pressure gauge (5) are connected via a first branch pipe (6), and a first stop valve (61) is provided on the first branch pipe (6), and the first stop valve (61) is used to control the opening and closing of the first branch pipe (6); And / or, the second detection interface and the second pressure gauge are connected via a second branch pipe, and a second stop valve is provided on the second branch pipe, and the second stop valve is used to control the opening and closing of the second branch pipe.

8. The photovoltaic glass edge fire combustion auxiliary device according to claim 3, characterized in that: The first gas transmission branch pipe (2) is provided with a first check valve (22); And / or, a second check valve is provided on the second gas transmission branch pipe.

9. A photovoltaic glass edge fire combustion auxiliary device according to claim 2 or 3, characterized in that: Six first gas transmission branch pipes (2) are provided.

10. A control method, applied to the photovoltaic glass edge fire combustion auxiliary device according to any one of claims 1 to 9, characterized in that: The control method comprises the following steps: Obtaining a first temperature difference between a lateral side and a middle portion of a glass sheet output from a furnace; The controller compares the first temperature difference with a first standard temperature difference to obtain a first compensation adjustment value, and controls the opening of a first ball valve (21) of the natural gas edge fire combustion auxiliary component according to the first compensation adjustment value.

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