CN114560621B - Production method of ultra-wide-breadth high-transmittance photovoltaic glass plate - Google Patents
Production method of ultra-wide-breadth high-transmittance photovoltaic glass plate Download PDFInfo
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- CN114560621B CN114560621B CN202210170829.0A CN202210170829A CN114560621B CN 114560621 B CN114560621 B CN 114560621B CN 202210170829 A CN202210170829 A CN 202210170829A CN 114560621 B CN114560621 B CN 114560621B
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- 239000011521 glass Substances 0.000 title claims abstract description 107
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 51
- 238000002834 transmittance Methods 0.000 title claims abstract description 32
- 239000011449 brick Substances 0.000 claims abstract description 100
- 238000000137 annealing Methods 0.000 claims abstract description 28
- 238000004321 preservation Methods 0.000 claims abstract description 24
- 238000003490 calendering Methods 0.000 claims abstract description 22
- 230000000903 blocking effect Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 26
- 229910001220 stainless steel Inorganic materials 0.000 claims description 19
- 239000010935 stainless steel Substances 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 14
- 238000005096 rolling process Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 230000006872 improvement Effects 0.000 abstract description 4
- 239000000156 glass melt Substances 0.000 description 9
- 230000008859 change Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000005357 flat glass Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 206010017472 Fumbling Diseases 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B13/00—Rolling molten glass, i.e. where the molten glass is shaped by rolling
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
- C03B35/162—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors combined with means for thermal adjustment of the rollers, e.g. cooling
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/26—Outlets, e.g. drains, siphons; Overflows, e.g. for supplying the float tank, tweels
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/42—Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
- C03B5/43—Use of materials for furnace walls, e.g. fire-bricks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The application discloses a production method of an ultra-wide-width high-transmittance photovoltaic glass plate, which comprises square bricks, a brick guard, a calender and a roller table, wherein the square bricks are arranged between a tank furnace and an annealing kiln, flame blocking bricks, a hanging brick heat preservation device and an overflow port fire gun are sequentially arranged on the square bricks, lip bricks are paved between the brick guard, and a softening fire gun is arranged on the roller table. According to the application, through the self-designed special-shaped refractory square bricks, a set of hanging brick heat preservation device, a set of improved integrated device for protecting bricks and adjusting, an elongated calendaring roller with shallow patterns and a matched fire gun softening device, the wide glass can be produced in the existing equipment through the structural improvement of the equipment, and further through the control and adjustment of the temperature, the production of the ultra-wide high-transmittance photovoltaic glass is satisfied from hardware facilities to software, the requirements of users on the ultra-wide high-transmittance glass plate are satisfied, the production cost is reduced, and the yield is improved.
Description
Technical Field
The application relates to the technical field of glass production equipment, in particular to a production method of an ultra-wide-width high-transmittance photovoltaic glass plate.
Background
At present, with the development of modern industry, the global energy crisis and the air pollution problem are increasingly prominent, solar energy is receiving high attention as ideal renewable clean energy, and the development and the utilization of solar energy resources are being pursued in various countries of the world. The solar cell can convert solar energy into electric energy by utilizing the photovoltaic effect, and fully and effectively utilizes the solar energy, so that the application range of the solar cell is increasingly wide along with the development of the photovoltaic industry, and the market scale is gradually enlarged. With the continuous deep solar energy application, it is gradually realized that the same capital investment is generally adopted, and the conversion rate of solar energy increases with the increase of the breadth area of the photovoltaic glass plate, that is, the output and input ratio of the capital is greatly improved, so that the ultra-wide photovoltaic glass plate is more and more favored, and the market demand is also more and more increased. However, according to the current glass production technology, the width of the glass sheet produced by the double-format process is 1048mm at maximum due to various reasons such as the limitation of the design of the glass tank furnace, the technical reasons of the glass manufacturer, etc., and beyond the size, the single-format process is necessary, which inevitably results in the increase of the width of the clean edge, a large amount of good glass is removed, and the production cost is greatly increased, but the production cost is also necessary for protecting users and meeting the market demands. Meanwhile, the photovoltaic cover plate glass serving as a solar cell module is an important raw material in the manufacturing process of the solar cell, and the solar light transmittance of the photovoltaic cover plate glass directly influences the photoelectric conversion efficiency of the solar cell, so that the improvement of the light transmittance is also an important direction for the development of photovoltaic glass products.
In particular, for the width of the glass plate, the restriction factors are mainly the width of the branch passage and the liquid outlet of the tank furnace, the effective pattern width of the calendaring rollers and the width of the follow-up equipment, and the corresponding production process conditions are adopted, the former is the most basic production condition, the latter is the basic guarantee of production, the two complement each other, and especially when the width of the glass plate reaches a certain degree, the production difficulty is more and more large, and for the ultra-wide glass plate surface, the production difficulty is more and more large. Therefore, the production method of the ultra-wide-width high-transmittance photovoltaic glass needs to be started from the aspects of development of key equipment, supporting facilities, process conditions and the like.
Disclosure of Invention
The application aims to provide a production method of ultra-wide-format high-transmittance photovoltaic glass plates, which can realize mass production of the ultra-wide-format high-transmittance photovoltaic glass, not only meets the requirements of users on the ultra-wide-format high-transmittance photovoltaic glass plates, but also reduces the production cost and improves the yield.
The application adopts the technical scheme that:
the ultra-wide high-transmittance photovoltaic glass plate production device comprises square bricks, a brick guard, a calender and a roller table, wherein the square bricks are arranged between a tank furnace and an annealing furnace, flame blocking bricks, a hanging brick heat preservation device and an overflow port flame gun are sequentially arranged on the square bricks, lip bricks are further paved between the brick guard, a softening flame gun is arranged on the roller table, the square bricks are composite fireproof square bricks which are respectively arranged on two sides of an outlet of the tank furnace, and the opposite sides of the square bricks are arc-shaped trapezoidal tables; the composite fireproof square brick comprises a stainless steel shell, wherein the shape and the size of the stainless steel shell are matched with those of a fireproof material brick, the fireproof material brick is placed in the stainless steel shell, an adjusting handle is fixedly arranged on one side of the stainless steel shell, a plurality of positioning holes are formed in the adjusting handle, an adjusting device base is further included, a position adjusting screw rod and a sliding block are horizontally arranged on the adjusting device base, a screw hole is formed in the sliding block, and the position adjusting screw rod penetrates through the screw hole of the sliding block to be connected in a screw mode;
the hanging brick heat preservation device comprises a hanging bracket and hanging bricks, wherein a hanging hole is formed in the top of the hanging bracket, and hanging brick handles are respectively arranged at two ends of the hanging bracket; the length of the rolling roller on the calender is 100-400 mm longer than that of the original roller, and shallow patterns formed by regular triangular pyramid tables are arranged on the rolling roller; the method comprises the following steps:
a: after passing through the outlet of the tank furnace, the glass is subjected to heat preservation by a brick-protecting and brick-hanging heat preservation device in sequence, the integrated brick-protecting device can realize rapid adjustment of the width according to an adjusting device, slag is not dropped in the adjusting process, and the glass enters a calender;
b: the method comprises the steps that a calender is used for calendering glass, the glass is calendered through lengthened calendering rollers, the running speed of the calendering rollers is 500-750 cm/min, the running speed of auxiliary rollers is 550-750 cm/min, the running speed of a roller table is 550-800 cm/min, the running speed of main transmission is 800-1200 cm/min, and then the glass enters the roller table;
c: the softening fire gun on the roller table heats the edges of the glass, so that the edges of the glass are kept at high temperature, damage on the roller table is avoided, and the glass enters an annealing kiln;
d: after the glass enters an annealing kiln for annealing, cooling the finished product; the temperature of the annealing curve A1 area of the annealing kiln is as follows: the temperature of the edge is 500-600 ℃ and the temperature of the middle 500-650 ℃; a2 zone temperature: the temperature of the edge is 500-550 ℃ and the temperature of the middle is 500-620 ℃; zone B temperature: the temperature of the edge is 400-500 ℃ and the temperature of the middle edge is 400-550 ℃; zone C temperature: 300-400 ℃ at the edge and 300-450 ℃ in the middle.
One side or two side walls of the stainless steel shell comprise arc-shaped missing parts.
The radius of the arc-shaped missing part is 100-200mm.
The thickness of the stainless steel shell is 5-50mm.
The method comprises the following steps: the regular triangular pyramid tables with patterns on the bottom surface of the glass are orderly arranged in the transverse direction and the longitudinal direction, and the mutual gap of the three-dimensional patterns is 0.02-0.2 mm.
The side length of the bottom surface of the regular triangular pyramid table is 0.6-1.5 mm, the side length of the top surface of the regular triangular pyramid table is 0.4-1.0 mm, the radius of a smooth connecting circular arc is 0.15-1.20 mm, and the height of the frustum is 0.05-0.20 mm.
The softening fire gun comprises a fire gun adjusting support, a fire gun barrel is fixedly arranged on the fire gun adjusting support, a fire gun head is fixedly arranged at one end of the fire gun barrel, the other end of the fire gun barrel is respectively communicated with a gas pipeline and a compressed air pipeline, a gas pressure reducing valve, a gas pressure gauge and a gas valve are arranged on the gas pipeline, and a compressed air valve, a compressed air pressure reducing valve and an air pressure gauge are arranged on the compressed air pipeline.
According to the application, through the self-designed special-shaped refractory square bricks, a set of hanging brick heat preservation device, a set of improved integrated device for protecting bricks and adjusting, an elongated calendaring roller with shallow patterns and a matched fire gun softening device, the wide glass can be produced in the existing equipment through the structural improvement of the equipment, and further through the control and adjustment of the temperature, the production of the ultra-wide high-transmittance photovoltaic glass is satisfied from hardware facilities to software, the requirements of users on the ultra-wide high-transmittance glass plate are satisfied, the production cost is reduced, and the yield is improved.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of a photovoltaic glass plate production device with ultra-wide format and high transmittance according to the application;
fig. 2 is a schematic structural view of the square brick according to the present application.
Fig. 3 is a schematic structural view of the hanging brick heat preservation device.
Fig. 4 is a schematic structural view of the brick according to the present application.
FIG. 5 is a schematic view of the structure of the flame gun softening device according to the present application;
fig. 6 is a flow chart of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without any inventive effort, are intended to be within the scope of the application.
As shown in fig. 1, 2, 3, 4, 5 and 6, the photovoltaic glass plate production device based on ultra-wide high transmittance comprises a guard brick 6, a square brick 3, a calender and a roller table which are arranged between a tank furnace 1 and an annealing furnace 10, wherein a flame shielding brick 2, a hanging brick heat preservation device 4 and an overflow port flame gun 5 are sequentially arranged on the square brick 3, a lip brick 11 is also paved between the guard bricks 6, a softening flame gun 8 is arranged on the roller table 9, the square bricks 3 are respectively arranged at two sides of an outlet of the tank furnace, the opposite sides of the square bricks are provided with trapezoid table bodies 301 of circular arc shapes 303, and a narrow part 302 of the trapezoid bodies is arranged at one side far from the outlet; the smooth transition between the inside and the refractory bricks at the edge of the branch passage can be realized, the smooth transition between the inside and the refractory bricks at the edge of the branch passage after the overflow port is widened can be met, and meanwhile, the glass melt can smoothly flow without abnormality. A production method based on claim 9, comprising the steps of:
a: after passing through the outlet of the tank furnace, the glass is subjected to heat preservation by a brick-protecting and brick-hanging heat preservation device in sequence, the integrated brick-protecting device can realize rapid adjustment of the width according to an adjusting device, slag is not dropped in the adjusting process, and the glass enters a calender;
b: the method comprises the steps that a calender is used for calendering glass, the glass is calendered through lengthened calendering rollers, the running speed of the calendering rollers is 500-750 cm/min, the running speed of auxiliary rollers is 550-750 cm/min, the running speed of a roller table is 550-800 cm/min, the running speed of main transmission is 800-1200 cm/min, and then the glass enters the roller table;
c: the softening fire gun on the roller table heats the edges of the glass, so that the edges of the glass are kept at high temperature, damage on the roller table is avoided, and the glass enters an annealing kiln;
d: after the glass enters an annealing kiln for annealing, cooling the finished product; the temperature of the annealing curve A1 area of the annealing kiln is as follows: the temperature of the edge is 500-600 ℃ and the temperature of the middle 500-650 ℃; a2 zone temperature: the temperature of the edge is 500-550 ℃ and the temperature of the middle is 500-620 ℃; zone B temperature: the temperature of the edge is 400-500 ℃ and the temperature of the middle edge is 400-550 ℃; zone C temperature: 300-400 ℃ at the edge and 300-450 ℃ in the middle.
The above-mentioned each partition is a general partition of a general annealing furnace, and actually, the requirements of each kind of glass plate on the annealing curve can be set according to the actual requirements, so that each kind of glass plate has respective specific temperature in each partition.
According to the device, heating on the roller table can be realized according to the arrangement of the device, and annealing is performed on the partition, so that the ultra-wide-width high light transmittance of the photovoltaic glass is realized as a whole.
The guard brick 6 is a composite fireproof brick and comprises a stainless steel shell, the shape and the size of the stainless steel shell are matched with those of the fireproof material guard brick, the fireproof material guard brick is placed in the stainless steel shell 601, an adjusting handle 602 is fixedly arranged on one side of the stainless steel shell 601, a plurality of positioning holes 603 are formed in the adjusting handle 602, the fireproof brick also comprises an adjusting device base 606, a position adjusting screw 604 and a sliding block 605 are horizontally arranged on the adjusting device base 606, a screw hole is formed in the sliding block 605, and the position adjusting screw penetrates through the screw hole of the sliding block to be screwed; the adjusting device is provided with an initial positioning hole and an angle adjusting hole of the adjusting handle, and the initial positioning of the guarding bricks can be adjusted, so that the adjusting width range is further enlarged, the position and the angle of the guarding bricks can be flexibly, accurately and rapidly adjusted through the adjusting device, and the preparation of a foundation is provided for producing wide glass. Referring specifically to the prior published patent CN202022132446.3, a device for adjusting width of glass plate, the specific structure and principle will not be described here again. The guard brick is designed with a special connecting hole and a front-back movement mechanism and is connected into a whole through bolts, so that the width adjustment range of the glass plate can be enlarged.
The hanging brick heat preservation device comprises a hanging bracket 402 and hanging bricks 403, wherein a hanging hole 404 is formed in the top of the hanging bracket 402, and hanging brick handles 401 are respectively arranged at two ends of the hanging bracket; through the setting of gallows and hanging hole, can be convenient quick install and demolish to hanging brick heat preservation device through the loop wheel machine, fine realization is to the preliminary heat preservation of glass, installs the insulating brick with dedicated hoist and mount frame moreover, wholly lead to the long ground and change on the square brick, compensate the heat change that the change of passageway glass melt flow state brought and the defect that production ultra wide breadth glass board limit portion is because heat loss brings.
The length of the rolling roller on the rolling machine is 100-400 mm longer than that of the original roller, and shallow patterns formed by regular triangular pyramids are arranged on the rolling roller.
One side or two side walls of the stainless steel shell comprise arc-shaped missing parts. The arc missing part can make the overall structure lighter, and simultaneously, make things convenient for the dismantlement and the installation of guard brick and stainless steel shell, raise the efficiency.
The radius of the arc-shaped missing part is 100-200mm. The thickness of the stainless steel shell is 5-50mm. Can be selected according to actual requirements, namely
The actual requirements are selected, so that the requirements can be met, raw materials can be saved, and the weight is reduced.
The regular triangular pyramid tables with patterns on the bottom surface of the glass are orderly arranged in the transverse direction and the longitudinal direction, and the mutual gap of the three-dimensional patterns is 0.02-0.2 mm. The side length of the bottom surface of the regular triangular pyramid table is 0.6-1.5 mm, the side length of the top surface of the regular triangular pyramid table is 0.4-1.0 mm, the radius of a smooth connecting circular arc is 0.15-1.20 mm, and the height of the frustum is 0.05-0.20 mm; the pattern depth can be reduced by arranging patterns and designing lengthened calendaring rollers with shallow patterns so as to produce the shallow pattern glass, and further increase the light transmittance of the glass.
The softening fire gun comprises a fire gun adjusting bracket 809, a fire gun barrel 802 is fixedly arranged on the fire gun adjusting bracket, a fire gun head 801 is fixedly arranged at one end of the fire gun barrel 802, the other end of the fire gun barrel is respectively communicated with a gas pipeline and a compressed air pipeline, a gas pressure reducing valve 804, a gas pressure gauge 808 and a gas valve 806 are arranged on the gas pipeline, and a compressed air valve 805, a compressed air pressure reducing valve 803 and an air pressure gauge 807 are arranged on the compressed air pipeline. By means of the softening fire gun, the glass plate belt can be prevented from tilting due to process variation.
When the photovoltaic calendaring glass is actually used, the specific process is as follows: furnace, transverse passage, branch passage, overflow port, calendaring, annealing in annealing kiln, etc. The width of the overflow port is required to be certain due to the reasons of the width of the glass sheet required by the users in the traditional market, the traditional design and installation and the like, the corresponding forming equipment is also basically matched for manufacturing and use, and the production for many years has correspondingly mature process conditions, but once the ultra-wide glass sheet is produced, the production of the ultra-wide glass sheet is not realized except the single-width production without cost due to the special characteristics of the glass production and the strict requirements on the temperature. To meet the great demands of current market users for ultra-wide format, a number of improvements from equipment facilities to process conditions are necessary, and for ease of illustration, a detailed description will now be made of the production of ultra-wide glass sheets having a thickness of 2.5 mm.
And (5) installing the special-shaped refractory square bricks 3. The square bricks are the key for connecting the branch passage and the overflow port of the tank furnace, the pair of square bricks on two sides of the branch passage are also the key for determining the width of the whole overflow port, the original square bricks are removed, special-shaped refractory square bricks are installed, the inner end faces 301 of the square bricks are stably connected with the inside of the branch passage, the outer end faces 302 of the square bricks are stably connected with the gate-on brick 601, and the normal connection is confirmed, so that the whole structure is smooth and stable by utilizing the arc faces of the inner side faces 303 of the square bricks, the space with inconsistent temperature caused by glass retention is avoided, the glass melt flows smoothly, and the normal requirements of the uniformity and consistency of glass production are ensured. The outer end face is reduced by about 250mm in width due to the special-shaped structure, and the total width of the two sides can be increased by about 500 mm. Because the temperature is above 1200 ℃, the square bricks are preheated before being fixedly installed in order to prevent cracks from occurring due to the sudden heating of the square bricks.
And (5) installing the brick 6 and the adjusting integrated device. The ultra-wide glass plate needs a large adjusting space of the integrated device for blocking and adjusting, and in the application, the adjusting device is provided with an adjusting handle initial positioning and angle adjusting series hole 603, the innermost hole position of the ultra-wide glass plate can be fixed on an adjusting support by bolts, thus the initial position of the blocking can be greatly widened, and then the adjusting width range can be further enlarged by an adjusting handle 602, a position adjusting screw 604, a movable speed 605 and an adjusting device base 606.
And (5) installing the hanging brick heat preservation device 4. The glass melting device has the main function of ensuring the temperature of the glass melt at the overflow port and meeting the defects of ultra-wide glass, especially the edge of the ultra-wide glass caused by insufficient heat. Hanging bricks 403 are strung onto a hanging frame 402, a hanging brick heat preservation device 4 is hung above an overflow port by using hanging holes 404 to preheat, and after the hanging brick heat preservation device is to a certain extent, the hanging brick heat preservation device is placed on a special-shaped refractory square brick 3 by using a hanging brick handle 401, so that heat emission is well shielded, the temperature of glass melt of the whole overflow port is increased by 20-30 ℃ compared with that before the glass melt is covered, and the production requirement on the temperature is ensured.
A calender 7 with elongated shallow pattern calender rolls is used. After the calendering roller is refitted, the width of 100-400 mm is prolonged, the pattern of the calendering roller adopts shallow patterns, the side length of the bottom surface of a shallow pattern regular triangular pyramid table is 0.6-1.5 mm, the side length of the top surface is 0.4-1.0 mm, the radius of a smooth connecting circular arc is 0.15-1.20 mm, and the height of a frustum is 0.05-0.20 mm; the regular triangular pyramid tables with patterns on the bottom surface of the glass are orderly arranged in the transverse direction and the longitudinal direction, and the mutual gap of the three-dimensional patterns is 0.02-0.2 mm. On the one hand, the requirement for ultra-wide breadth is ensured, and meanwhile, the light transmittance of the glass sheet is increased.
Mounting and adjusting the softening flame gun 8. The long-term production knowledge of the photovoltaic glass can know that under the premise of a certain temperature of glass melt at an overflow port, the production of the glass plate belt is realized by the pressure of a pressing bar and the increase of the whole traction rate by dragging, but the new problem after the traction rate is increased is that the glass plate belt is easy to generate a suspended state, namely a tilting phenomenon, so that new defects on the plate surface are generated. After the softening fire gun device 8 is installed, the glass which is hardened by heating becomes soft and falls onto the conveying roller again, and the glass enters the annealing kiln steadily for annealing.
Development of production process condition parameters. Installation of equipment and the like is a precondition, and development of products suitable for each variety, thickness, and specification using these hardware requires development of respective production process condition parameters. By fumbling and summarizing, the following is basically:
the operation speed of the calendaring roller is 500-750 cm/min, the auxiliary roller is 550-750 cm/min, the roller table is 550-800 cm/min, and the main transmission is 800-1200 cm/min.
Annealing furnace annealing curve A1 zone temperature: the temperature of the edge is 500-600 ℃ and the temperature of the middle 500-650 ℃; a2 zone temperature: the temperature of the edge is 500-550 ℃ and the temperature of the middle is 500-620 ℃; zone B temperature: the temperature of the edge is 400-500 ℃ and the temperature of the middle edge is 400-550 ℃; zone C temperature: 300-400 ℃ at the edge and 300-450 ℃ in the middle.
Through development of equipment and related process conditions and the like, the ultra-wide-width high-transmittance photovoltaic glass plate is realized, the single-sheet width of double-width production of the glass plate can reach more than 1200mm (original maximum width is 1048 mm), the effective width reaches more than 2500, the edge cleaning loss is reduced to 5.8%, the market demand is met, and the production cost is reduced; on the other hand, the light transmittance can reach 91.7% -91.8%, and the light transmittance is increased by 0.2% compared with that of a common photovoltaic glass plate.
The application designs a special-shaped refractory square brick: the smooth transition between the inside and the refractory bricks at the edge of the branch passage can be realized, the smooth transition between the inside and the refractory bricks at the edge of the branch passage after the overflow port is widened can be met, and meanwhile, the glass melt can smoothly flow without abnormality. Designing a set of hanging brick heat preservation device: the insulating brick is mounted on the special lifting frame, and the whole insulating brick is changed on the square brick in a whole length manner, so that the heat change caused by the change of the flowing state of the glass melt in the channel and the defect caused by heat loss at the edge of the ultra-wide-format glass plate are overcome. Design a kind of brick and adjust the integrated device: the guard brick is designed with a special connecting hole and a front-back movement mechanism and is connected into a whole through bolts, so that the width adjustment range of the glass plate can be enlarged. Designing an elongated calendaring roller with shallow patterns: the depth of the pattern is reduced to produce the shallow pattern glass and the transmittance is increased. A special fire gun heating device is designed to prevent the glass plate from tilting due to process variation. The application well meets the requirement of mass production of the ultra-wide-format glass plates by developing the production process parameters of the ultra-wide-format glass plates.
In the description of the present application, it should be noted that, for the azimuth words such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present application that the device or element referred to must have a specific azimuth configuration and operation.
It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Note that the above is only a preferred embodiment of the present application and uses technical principles. It will be understood by those skilled in the art that the present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the application. Therefore, while the present application has been described in connection with the above embodiments, it is to be understood that the application is not limited to the specific embodiments disclosed and that many other and equally effective embodiments may be devised without departing from the spirit of the application, and the scope thereof is determined by the scope of the appended claims.
Claims (7)
1. A production method of a photovoltaic glass plate with ultra-wide breadth and high transmittance is characterized by comprising the following steps: the ultra-wide high-transmittance photovoltaic glass plate production device comprises square bricks, a brick blocking device, a brick hanging heat preservation device and an overflow port fire gun which are arranged between a tank furnace and an annealing furnace, wherein lip bricks are further paved between the brick blocking device and the brick hanging heat preservation device, and a softening fire gun is arranged on the roller table; the composite fireproof square brick comprises a stainless steel shell, wherein the shape and the size of the stainless steel shell are matched with those of a fireproof material brick, the fireproof material brick is placed in the stainless steel shell, an adjusting handle is fixedly arranged on one side of the stainless steel shell, a plurality of positioning holes are formed in the adjusting handle, an adjusting device base is further included, a position adjusting screw rod and a sliding block are horizontally arranged on the adjusting device base, a screw hole is formed in the sliding block, and the position adjusting screw rod penetrates through the screw hole of the sliding block to be connected in a screw mode;
the hanging brick heat preservation device comprises a hanging bracket and hanging bricks, wherein a hanging hole is formed in the top of the hanging bracket, and hanging brick handles are respectively arranged at two ends of the hanging bracket; the length of the rolling roller on the calender is 100-400 mm longer than that of the original roller, and shallow patterns formed by regular triangular pyramid tables are arranged on the rolling roller; the method comprises the following steps:
a: after passing through the outlet of the tank furnace, the glass is subjected to heat preservation by a brick-protecting and brick-hanging heat preservation device in sequence, the integrated brick-protecting device can realize rapid adjustment of the width according to an adjusting device, slag is not dropped in the adjusting process, and the glass enters a calender;
b: the method comprises the steps that a calender is used for calendering glass, the glass is calendered through lengthened calendering rollers, the running speed of the calendering rollers is 500-750 cm/min, the running speed of auxiliary rollers is 550-750 cm/min, the running speed of a roller table is 550-800 cm/min, the running speed of main transmission is 800-1200 cm/min, and then the glass enters the roller table;
c: the softening fire gun on the roller table heats the edges of the glass, so that the edges of the glass are kept at high temperature, damage on the roller table is avoided, and the glass enters an annealing kiln;
d: after the glass enters an annealing kiln for annealing, cooling the finished product; the temperature of the annealing curve A1 area of the annealing kiln is as follows: the temperature of the edge is 500-600 ℃ and the temperature of the middle 500-650 ℃; a2 zone temperature: the temperature of the edge is 500-550 ℃ and the temperature of the middle is 500-620 ℃; zone B temperature: the temperature of the edge is 400-500 ℃ and the temperature of the middle edge is 400-550 ℃; zone C temperature: 300-400 ℃ at the edge and 300-450 ℃ in the middle.
2. The method for producing the ultra-wide-format high-transmittance photovoltaic glass plate according to claim 1, wherein the method comprises the following steps: one side or two side walls of the stainless steel shell comprise arc-shaped missing parts.
3. The method for producing the ultra-wide-format high-transmittance photovoltaic glass plate according to claim 2, wherein the method comprises the following steps: the radius of the arc-shaped missing part is 100-200mm.
4. A method for producing ultra-wide format high transmittance photovoltaic glass panels according to claim 3, characterized in that: the thickness of the stainless steel shell is 5-50mm.
5. The method for producing the ultra-wide-format high-transmittance photovoltaic glass plate according to claim 1, wherein the method comprises the following steps: the method comprises the following steps: the regular triangular pyramid tables with patterns on the bottom surface of the glass are orderly arranged in the transverse direction and the longitudinal direction, and the mutual gap of the three-dimensional patterns is 0.02-0.2 mm.
6. The method for producing the ultra-wide-format high-transmittance photovoltaic glass plate according to claim 5, which is characterized in that: the side length of the bottom surface of the regular triangular pyramid table is 0.6-1.5 mm, the side length of the top surface of the regular triangular pyramid table is 0.4-1.0 mm, the radius of a smooth connecting circular arc is 0.15-1.20 mm, and the height of the frustum is 0.05-0.20 mm.
7. The method for producing ultra-wide format high transmittance photovoltaic glass panels according to any one of claims 1 to 6, characterized in that: the softening fire gun comprises a fire gun adjusting support, a fire gun barrel is fixedly arranged on the fire gun adjusting support, a fire gun head is fixedly arranged at one end of the fire gun barrel, the other end of the fire gun barrel is respectively communicated with a gas pipeline and a compressed air pipeline, a gas pressure reducing valve, a gas pressure gauge and a gas valve are arranged on the gas pipeline, and a compressed air valve, a compressed air pressure reducing valve and an air pressure gauge are arranged on the compressed air pipeline.
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