Overflow port structure of ultra-white rolled glass melting furnace

Abstract

The invention discloses an overflow port structure of an ultra-white rolled glass melting furnace in the technical field of glass melting furnaces. The overflow port structure comprises a branch passage, the overflow port is formed in one side of the tail end of the branch passage; the outlet arch is arranged above the overflow port; the first electric boosting piece is arranged at the bottom of the tail end of the branch path and is used for preventing the molten glass from crystallizing; the second electric boosting pieces are arranged on the overflow port pool walls on the two sides of the overflow port and are used for reducing the transverse temperature difference of the molten glass. According to the invention, an electric boosting mode is adopted, and the molten glass at the tail end of the branch path is integrally heated through the first electric boosting piece, so that the temperature of the molten glass at the tail end of the branch path can be increased, and a crystallization phenomenon is prevented; and the second electric fluxing piece is used for locally heating the glass liquid in the overflow port, so that the transverse temperature difference of the glass liquid in the overflow port is reduced, and the uniformity and the glass quality of the glass liquid are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass melting furnace, in particular to an overflow port structure of an ultra-white calendaring glass melting furnace. BACKGROUND

[0002] With the upgrading of the conventional size of silicon wafers in the ultra-white calendaring glass industry, the product line of large-size batteries and components will inevitably be the future development trend. At present, the specifications of conventional components on the market are 210 components, 182 components and 166 components, and large-size silicon wafers (210 components) can increase the output of silicon wafers, batteries and components, thereby reducing the production cost per watt. The large-component trend of silicon wafers will inevitably affect the matching of its industrial chain, especially photovoltaic glass, which needs to adapt to the width of the component from the original 1 meter to 1.3 meters, and the width of the glass original plate from the original two plates of 2.4 meters to the future four plates of 5.4 meters. Moreover, not only the width of a single branch line of calendaring glass becomes larger, but also the tonnage becomes larger, and some can even reach a drawing amount of 500 t / d per single branch line. However, the existing large-tonnage calendaring glass melting furnace often encounters the following problems:

[0003] 1. The temperature deviation of each branch line is large, and the temperature of some branch lines is too low due to the requirement of the forming process for the arrangement distance, which cannot reach the forming temperature or appears crystallization phenomenon, and the quality of the glass cannot be guaranteed.

[0004] 2. The glass liquid flow has a large transverse temperature difference at the overflow port outlet of the product with a large plate width, such as a 4.1 m original plate width, and the temperature in the middle is often too high, and the temperature on both sides is too low, which affects the glass cross-sectional stripes and ultimately affects the yield rate. In the future layout of 210 components, the calendaring glass melting furnace will develop towards large tonnage and large plate width, and the glass original plate width of each branch passage will reach 5.4 m.

[0005] Therefore, how to stabilize the temperature of the glass liquid in each branch passage at the overflow port and reduce the transverse temperature difference of the glass liquid entering the calendar roll of the overflow port has become a technical problem to be solved by those skilled in the art. SUMMARY

[0006] Therefore, the purpose of the present application is to provide an overflow port structure of an ultra-white calendaring glass melting furnace to reduce the transverse temperature difference of the glass liquid in the overflow port and prevent the crystallization phenomenon of the glass liquid.

[0007] The technical scheme adopted by the present application is as follows: an overflow port structure of an ultra-white calendaring glass melting furnace, comprising:

[0008] a branch passage;

[0009] an overflow port, which is arranged at one side of the end of the branch passage;

[0010] an outlet dome arranged above the overflow port;

[0011] a first electric melting aid arranged at the bottom end of the branch channel for preventing crystallization of the glass liquid;

[0012] a second electric melting aid arranged on the overflow port pool wall on both sides of the overflow port for reducing the lateral temperature difference of the glass liquid.

[0013] Preferably, the first electric melting aid comprises two first electrodes, and the two first electrodes are horizontally inserted into the branch channel from the branch pool wall on both sides of the branch channel one by one.

[0014] Preferably, the power of the first electrode is 80 KVA.

[0015] Preferably, the second electric melting aid comprises two second electrodes, and the two second electrodes are horizontally inserted into the overflow port from the overflow port pool wall on both sides of the overflow port one by one.

[0016] Preferably, the power of the second electrode is 20 KVA.

[0017] Preferably, the outlet dome comprises an arch dome section and a flat dome section, the flat dome section is directly above the overflow port, and the arch dome section is located on the upstream side of the flat dome section.

[0018] Advantages of the present application:

[0019] The present application adopts the electric melting mode, a first electric melting aid is installed at the bottom end of the branch channel, the glass liquid at the end of the branch channel is heated as a whole through the first electric melting aid, the temperature of the glass liquid at the end of the branch channel can be improved, and the crystallization phenomenon can be prevented; a second electric melting aid is installed on the overflow port pool wall on both sides of the overflow port, the glass liquid in the overflow port can be locally heated through the second electric melting aid, so as to reduce the lateral temperature difference of the glass liquid in the overflow port, improve the uniformity of the glass liquid and the quality of the glass. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Fig. 1 is a structural schematic view of the overflow port structure of the ultra-white calendaring glass melting furnace of the present application;

[0021] Figure 2 Fig. 2 is the A-A view in Fig. 1. Figure 1

[0022] Fig. 3 is a structural schematic view of the overflow port structure of the ultra-white calendaring glass melting furnace of the present application.Fig. 4 is the A-A view in Fig. 3.

[0023] 10, branch channel;

[0024] 20, overflow port; 21, overflow port pool wall;

[0025] 30, outlet crown; 31, crown segment; 32, flat crown segment;

[0026] 40, first electric melting aid;

[0027] 50, second electric melting aid. DETAILED DESCRIPTION

[0028] The specific embodiments of the present application will be further described in conjunction with the drawings. These embodiments are only used to illustrate the present application, and are not intended to limit the present application.

[0029] In the description of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In addition, in the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0032] Embodiments, such as Figure 1 and Figure 2 As shown in the drawings, an overflow port structure of an ultra-white calendaring glass melting furnace includes a branch passage 10, an overflow port 20, an outlet crown 30, a first electric melting aid 40, and a second electric melting aid 50.

[0033] The overflow port 20 is arranged at the end side of the branch passage 10.

[0034] The outlet crown 30 is arranged above the overflow port 20, and is used to reduce the heat dissipation of the glass liquid.

[0035] The first electric melting aid 40 is arranged at the bottom of the end of the branch passage 10, and is used to prevent the crystallization of the glass liquid.

[0036] The second electric melting aid 50 is arranged on the overflow port pool wall 21 on both sides of the overflow port 20, and is used to reduce the transverse temperature difference of the glass liquid.

[0037] The first electric melting aid 40 is arranged at the bottom of the end of the branch channel 10, and the glass liquid at the end of the branch channel 10 is heated as a whole through the first electric melting aid 40, so that the temperature of the glass liquid at the end of the branch channel 10 is increased, and the crystallization phenomenon is prevented; the second electric melting aid 50 is arranged on the overflow port pool wall 21 on both sides of the overflow port 20, and the glass liquid in the overflow port 20 is heated locally through the second electric melting aid 50, so that the transverse temperature difference of the glass liquid in the overflow port 20 is reduced, and the uniformity of the glass liquid and the quality of the glass are improved.

[0038] Specifically, as shown in Figure 1 and Figure 2 , an overflow port structure of an ultra-white calendaring glass melting furnace, the overflow port structure comprising: a branch channel 10, an overflow port 20, an outlet arch 30, a first electric melting aid 40 and a second electric melting aid 50.

[0039] The overflow port 20 is fixedly arranged at one side of the end of the branch channel 10, and the flow direction of the glass liquid in the overflow port 20 is consistent with the flow direction of the glass liquid in the branch channel 10.

[0040] It should be noted that the specific structure of the overflow port 20 can refer to the photovoltaic calendaring glass melting furnace and the overflow port structure thereof disclosed in CN3603337B.

[0041] The outlet arch 30 is fixedly arranged above the overflow port 20, and the outlet arch 30 comprises an arch segment 31 and a flat arch segment 32. The flat arch segment 32 is fixedly arranged directly above the overflow port 20, so as to reduce the distance between the arch brick and the liquid surface of the glass liquid, to press the flame space, to reduce the heat dissipation of the glass liquid, and to increase the temperature of the glass liquid at the outlet of the overflow port 20; the arch segment 31 is located on the upstream side of the flat arch segment 32, and the arch segment 31 is located directly above the inlet of the overflow port 20, that is, directly above the second electric melting aid 50, and the arch segment 31 is fixedly connected with the flat arch segment 32.

[0042] The first electric melting aid 40 is arranged on the branch channel pool wall on both sides of the bottom of the end of the branch channel 10, and the first electric melting aid 40 comprises two first electrodes, which are inserted into the branch channel 10 from the branch channel pool wall on both sides of the branch channel 10 horizontally one by one, and the power of the first electrode is 80KVA, which is used to heat the glass liquid at the bottom of the end of the branch channel 10.

[0043] The reason for such arrangement is that before the glass liquid flows from the branch channel 10 into the overflow port 20, the first electrode is added at the bottom of the end of the branch channel 10 to heat the glass liquid as a whole, so that the crystallization phenomenon caused by low temperature is reduced.

[0044] The second electric melting aid 50 is installed on the overflow port pool wall 21 on both sides of the overflow port 20, and the second electric melting aid 50 comprises two second electrodes, which are inserted into the interior of the overflow port 20 from the overflow port pool wall 21 on both sides of the overflow port 20 horizontally one by one, and the power of the second electrode is 20 KVA, which is used for heating the glass liquid on the horizontal two sides in the interior of the overflow port 20.

[0045] The reason for such arrangement is that the transverse temperature difference of the glass liquid flow can be reduced by properly heating the glass liquid in the overflow port 20 by a pair of first electrodes with smaller power.

[0046] Compared with the prior art, the present application has at least the following beneficial technical effects:

[0047] The present application adopts the electric melting method to locally heat the glass liquid on both sides of the overflow port, reduces the transverse temperature difference of the glass liquid in the overflow port, improves the uniformity of the glass liquid, and improves the glass quality.

[0048] The present application is installed with an electric melting aid at the bottom of the end of the branch passage, and the glass liquid in the branch passage is heated as a whole by the electric melting method, which improves the temperature of the glass liquid at the end of the branch passage, and solves the problem that the temperature of the glass liquid at the outlet of the branch passage is low due to the process layout and the long passage, which affects the glass forming and causes the crystallization phenomenon.

[0049] The present application adopts the electric melting method to improve the temperature of the glass liquid, has the advantages of large adjustment range, low energy consumption, and convenient installation, and can better and more flexibly adapt to various calender glass with different widths, especially after the green electricity generated by using the waste heat of the glass factory replaces the traditional gas heating means, the energy consumption can be reduced.

[0050] The present application lowers the flame space by matching the flat bottom structure at the upper part of the overflow port, reduces the heat dissipation, further improves the temperature of the glass liquid in the overflow port, and reduces the energy consumption.

[0051] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and replacements can be made without departing from the technical principles of the present application, and these improvements and replacements should also be regarded as the protection scope of the present application.

Claims

1. An overflow port structure of an ultra-white rolled glass melting furnace, characterized in that: include: branch passage (10); an overflow port (20), the overflow port (20) being arranged at one end of the branch passage (10); An outlet arch (30), the outlet arch (30) being arranged above the overflow port (20); a first electric fluxing member (40), which is arranged at the bottom of the end of the branch passage (10) and is used to prevent crystallization of the glass liquid; The second electric fluxing member (50) is arranged on the overflow pool wall (21) on both sides of the overflow port (20) and is used to reduce the lateral temperature difference of the glass liquid.

2. The overflow port structure of the ultra-white rolled glass melting furnace according to claim 1, characterized in that: The first electric fluxing element (40) comprises two first electrodes, and the two first electrodes are horizontally inserted into the branch passage (10) from the branch passage pool walls on both sides of the branch passage (10) in a one-to-one correspondence.

3. The overflow port structure of the ultra-white rolled glass melting furnace according to claim 2, characterized in that: The power of the first electrode is 80KVA.

4. The overflow port structure of the ultra-white rolled glass melting furnace according to claim 1, characterized in that: The second electric fluxing member (50) comprises two second electrodes, and the two second electrodes are horizontally inserted into the overflow port (20) from the overflow port pool walls (21) on both sides of the overflow port (20) in a one-to-one correspondence.

5. The overflow port structure of the ultra-white rolled glass melting furnace according to claim 4, characterized in that: The power of the second electrode is 20KVA.

6. The overflow port structure of the ultra-white rolled glass melting furnace according to claim 1, characterized in that: The outlet arch (30) comprises an arch arch section (31) and a flat arch section (32), wherein the flat arch section (32) is located directly above the overflow port (20), and the arch arch section (31) is located on the upstream side of the flat arch section (32).

Images