CN114560621A - Production method of ultra-wide high-transmittance photovoltaic glass plate - Google Patents
Production method of ultra-wide high-transmittance photovoltaic glass plate Download PDFInfo
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- CN114560621A CN114560621A CN202210170829.0A CN202210170829A CN114560621A CN 114560621 A CN114560621 A CN 114560621A CN 202210170829 A CN202210170829 A CN 202210170829A CN 114560621 A CN114560621 A CN 114560621A
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- 239000011521 glass Substances 0.000 title claims abstract description 103
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 238000002834 transmittance Methods 0.000 title claims abstract description 29
- 239000011449 brick Substances 0.000 claims abstract description 110
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000003490 calendering Methods 0.000 claims abstract description 28
- 238000000137 annealing Methods 0.000 claims abstract description 24
- 238000004321 preservation Methods 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 13
- 230000000903 blocking effect Effects 0.000 claims abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 17
- 239000010935 stainless steel Substances 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 230000006872 improvement Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 7
- 239000000156 glass melt Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000006060 molten glass Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm 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
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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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
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- 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 invention discloses a production method of a photovoltaic glass plate with ultra-wide breadth and high transmittance, which comprises square bricks, guard bricks, a calender and a roller table which are arranged between a tank furnace and an annealing kiln, wherein the square bricks are sequentially provided with flame blocking bricks, hanging brick heat preservation devices and overflow port fire guns, lip bricks are laid between the guard bricks, and softening fire guns are arranged on the roller table. According to the invention, by means of the specially-designed special-shaped refractory square bricks, the hanging brick heat preservation device, the improved brick keeping and adjusting integrated device, the lengthened calendering roller with shallow patterns and the matched fire gun softening device, wide glass can be produced in the existing equipment through structural improvement of the equipment, and further by means of starting the forming process conditions of the equipment, the production of the photovoltaic glass with ultra-wide breadth and high transmittance is met from hardware facilities to software through temperature control and adjustment, so that the requirements of users on the glass plate with ultra-wide breadth and high transmittance are met, the production cost is reduced, and the yield is improved.
Description
Technical Field
The invention relates to the technical field of glass production equipment, in particular to a production method of a photovoltaic glass plate with an ultra-wide breadth and high transmittance.
Background
At present, with the development of modern industry, the global energy crisis and the problem of air pollution are increasingly prominent, solar energy is highly regarded as an ideal renewable clean energy source by people, and all countries in the world are dedicated to the development and utilization of solar energy resources. The solar cell can convert solar energy into electric energy by utilizing the photovoltaic effect, and the solar energy is fully and effectively utilized, 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. Along with the continuous deepening of people to solar energy application, also realize gradually that the input of the same fund under the general condition can increase along with the increase of photovoltaic glass board breadth area to the conversion rate of solar energy, can greatly improve the output input ratio of fund promptly, so the photovoltaic glass board of super wide breadth is receiving more and more favouring, and market demand is also bigger and more. However, due to various reasons such as the limitation of the design of the glass tank furnace, the technical reason of glass manufacturers and the like, according to the current glass production technology, the width of a glass plate produced in a double-width mode is 1048mm at most, and beyond the width, single-width production is required, so that the edge trimming width is increased, a large amount of good glass is removed, the production cost is greatly increased, and the requirements of users and market demands cannot be met. 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 is high or low, so that the photoelectric conversion efficiency of the solar cell is directly influenced, and the improvement of the light transmittance is also an important direction for the development of photovoltaic glass products.
In fact, for the breadth width of the glass plate, the restriction factors of the width of the channel of the furnace branch and the width of the liquid flow port of the tank, the effective pattern width of the calendering roller and the width of subsequent equipment are mainly the corresponding production process conditions, the former is the most basic production condition, the latter is fundamentally guaranteed in production, the two are complementary to each other and can not be used, especially, after the width of the glass plate reaches a certain degree, the production difficulty is more and more greater, and the method is particularly suitable for the glass plate surface with an ultra-wide breadth. Therefore, for the production method of the photovoltaic glass with ultra-wide breadth and high transmittance, the development of key equipment, supporting facilities, process conditions and the like needs to be started.
Disclosure of Invention
The invention aims to provide a production method of a photovoltaic glass plate with ultra-wide breadth and high transmittance, which can realize batch production of the photovoltaic glass with the ultra-wide breadth and high transmittance, not only meets the requirement of users on the glass plate with the ultra-wide breadth and high transmittance, but also reduces the production cost and improves the yield.
The technical scheme adopted by the invention is as follows:
a production method of a photovoltaic glass plate with ultra-wide breadth and high transmittance is based on a production device of a photovoltaic glass plate with ultra-wide breadth and high transmittance, and comprises square bricks, brick guarding devices, calenders and roller tables which are arranged between a tank furnace and an annealing kiln, wherein the square bricks are sequentially provided with flame blocking bricks, brick hanging heat preservation devices and overflow port fire guns, lip bricks are laid between the brick guarding devices, softened fire guns are arranged on the roller tables, the square bricks are composite refractory square bricks and are respectively arranged on two sides of an outlet of the tank furnace, and one side of each square brick is provided with an arc-shaped trapezoidal table body; the composite refractory square brick comprises a stainless steel shell, a position adjusting screw rod and a sliding block, wherein the shape and the size of the stainless steel shell are matched with those of a refractory brick;
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 calendering roller on the calender is 100-400 mm longer than that of the original roller, and the calendering roller is provided with a shallow pattern consisting of regular triangular pyramid platforms; the method comprises the following steps:
a: after passing through the outlet of the tank furnace, the glass is subjected to heat preservation sequentially by a brick guarding device and a brick hanging heat preservation device, the integrated brick guarding device can realize the rapid adjustment of the width according to an adjusting device, and the glass enters a calender without falling slag in the adjusting process;
b: the method comprises the following steps of (1) calendering glass by a calender, calendering the glass by lengthened calendering rollers, enabling the running speed of the calendering rollers to be 500-750 cm/min, enabling an auxiliary roller to be 550-750 cm/min, enabling a roller table to be 550-800 cm/min, enabling main transmission to be 800-1200 cm/min, and enabling the glass to enter the roller table;
c: the softening fire guns on the roller table heat the edges of the glass to keep the high temperature of the edge glass, so that the damage on the roller table is avoided, and then the glass enters an annealing kiln;
d: after the glass enters an annealing kiln for returning goods, cooling a finished product; the temperature of the annealing furnace annealing curve A1 area is as follows: the temperature of the edge part is 500-600 ℃ and the temperature of the middle part is 500-650 ℃; temperature in zone a 2: the temperature of the edge part is 500-550 ℃ and the temperature of the middle part is 500-620 ℃; temperature in zone B: the temperature of the edge part is 400-500 ℃, and the temperature of the middle part is 400-550 ℃; temperature in zone C: the temperature of the side part is 300-400 ℃ and the temperature of the middle part is 300-450 ℃.
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 100-200 mm.
The thickness of the stainless steel shell is 5-50 mm.
The following steps: the regular triangular pyramid platforms with patterns on the bottom surface of the glass are arranged in order 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 frustum is 0.6-1.5 mm, the side length of the top surface is 0.4-1.0 mm, the radius of the smooth connection circular arc is 0.15-1.20 mm, and the height of the frustum is 0.05-0.20 mm.
The softening firearms include firearms adjusting support, the fixed firearms pipe that is provided with on the firearms adjusting support, the fixed firearms head that sets up of one end of firearms pipe, the other end respectively with gas pipeline and compressed air pipeline intercommunication, the gas pipeline on be provided with gas relief pressure valve, gas manometer and gas valve, the compressed air pipeline on be provided with compressed air valve, compressed air relief pressure valve and air pressure gauge.
According to the invention, by means of the specially-designed special-shaped refractory square bricks, the hanging brick heat preservation device, the improved brick keeping and adjusting integrated device, the lengthened calendering roller with shallow patterns and the matched fire gun softening device, wide glass can be produced in the existing equipment through structural improvement of the equipment, and further by means of starting the forming process conditions of the equipment, the production of the photovoltaic glass with ultra-wide breadth and high transmittance is met from hardware facilities to software through temperature control and adjustment, so that the requirements of users on the glass plate with ultra-wide breadth and high transmittance are met, the production cost is reduced, and the yield is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an apparatus for producing a photovoltaic glass sheet with ultra-wide width and high transmittance according to the present invention;
fig. 2 is a schematic structural diagram of the square brick of the present invention.
FIG. 3 is a schematic structural view of the hanging brick heat preservation device of the present invention.
Fig. 4 is a schematic structural diagram of the brick keeper of the present invention.
FIG. 5 is a schematic structural view of the firearm softening device of the present invention;
FIG. 6 is a flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, 2, 3, 4, 5 and 6, the invention relates to a photovoltaic glass plate production device based on ultra-wide breadth high transmittance, which comprises a brick guarding 6, a square brick 3, a calender and a roller table arranged between a tank furnace 1 and an annealing kiln 10, wherein the square brick 3 is sequentially provided with a flame blocking brick 2, a brick hanging heat preservation device 4 and an overflow port fire gun 5, a lip brick 11 is laid between the brick guarding 6, a softening fire 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, one opposite side is provided with a trapezoidal table body 301 with an arc 303, and a narrow part 302 of the trapezoidal table body is arranged at one side far away from the outlet; the smooth switching of the refractory bricks inside and the refractory bricks at the edges of the branch passages can be realized, the smooth transition between the overflow port and the brick guarding can be met, and the molten glass can flow stably without exception. 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 sequentially by a brick guarding device and a brick hanging heat preservation device, the integrated brick guarding device can realize the rapid adjustment of the width according to an adjusting device, and the glass enters a calender without falling slag in the adjusting process;
b: the method comprises the following steps of (1) calendering glass by a calender, calendering the glass by lengthened calendering rollers, enabling the running speed of the calendering rollers to be 500-750 cm/min, enabling an auxiliary roller to be 550-750 cm/min, enabling a roller table to be 550-800 cm/min, enabling main transmission to be 800-1200 cm/min, and enabling the glass to enter the roller table;
c: the softening fire guns on the roller table heat the edges of the glass to keep the high temperature of the edge glass, so that the damage on the roller table is avoided, and then the glass enters an annealing kiln;
d: after the glass enters an annealing kiln for returning goods, cooling a finished product; the temperature of the annealing furnace annealing curve A1 area is as follows: the temperature of the edge part is 500-600 ℃ and the temperature of the middle part is 500-650 ℃; temperature in zone a 2: the temperature of the edge part is 500-550 ℃ and the temperature of the middle part is 500-620 ℃; temperature in zone B: the temperature of the edge part is 400-500 ℃, and the temperature of the middle part is 400-550 ℃; temperature in zone C: the temperature of the side part is 300-400 ℃ and the temperature of the middle part is 300-450 ℃.
The above-mentioned each section is a general section of a general annealing furnace, and in practice, 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 a specific temperature in each section.
According to the device, the heating on the roller table can be realized according to the arrangement of the device, the zones are annealed, and the ultra-wide breadth high light transmittance of the photovoltaic glass is integrally realized.
The brick retaining 6 is a composite refractory brick and comprises a stainless steel shell, wherein the shape and the size of the stainless steel shell are matched with those of refractory bricks, the refractory bricks are 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 brick retaining also comprises an adjusting device base 606, a position adjusting lead 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 lead screw penetrates through the screw hole of the sliding block to be in screw connection; adjusting device has adjustment handle initial positioning and the serial hole of angular adjustment, can adjust and watch on brick initial positioning to make the adjustment width scope further enlarge, here can be through the fine realization of adjusting device to the nimble accurate quick adjustment of the position of guarding the brick and angle, provide the preparation of basis for producing broad width glass. Refer to the patent CN202022132446.3, which has been published in the prior art, and the detailed structure and principle will not be described herein. The brick guard is designed with a special connecting hole and a front-back movement mechanism which are 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 the top of the hanging bracket 402 is provided with a hanging hole 404, and two ends of the hanging bracket 402 are respectively provided with a hanging brick handle 401; through the setting of gallows and lewis hole, can make things convenient for quick installing and demolish hanging brick heat preservation device through the loop wheel machine, fine realization to glass preliminary heat preservation, with dedicated hoist and mount frame dress insulating brick in addition, wholly change to on the square brick on the whole length ground, compensate the heat change that channel glass melt flow state change brought and produce super wide breadth glass board limit portion because calorific loss brings the defect.
The length of the calendering roller on the calender is 100-400 mm longer than that of the original roller, and the calendering roller is provided with a shallow pattern 703 consisting of regular triangular pyramid platforms.
One side or two side walls of the stainless steel shell comprise arc-shaped missing parts. The arc-shaped missing part can enable the overall structure to be lighter, meanwhile, the disassembly and the assembly of the brick and the stainless steel shell are convenient, and the efficiency is improved.
The radius of the arc-shaped missing part is 100-200 mm. The thickness of the stainless steel shell is 5-50 mm. Can be selected according to actual requirements, i.e.
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 platforms with patterns on the bottom surface of the glass are arranged in order 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 frustum is 0.6-1.5 mm, the side length of the top surface is 0.4-1.0 mm, the radius of the smooth connection arc is 0.15-1.20 mm, and the height of the frustum is 0.05-0.20 mm; the arrangement of patterns and the design of the lengthened calendering roller with the shallow patterns can reduce the depth of the patterns so as to produce the glass with the shallow patterns and further increase the light transmittance of the glass.
The softening firearms comprise firearms adjusting supports 809, firearms tubes 802 are fixedly arranged on the firearms adjusting supports, firearms heads 801 are fixedly arranged at one ends of the firearms 802, the other ends of the firearms 802 are 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. The glass plate and strip can be prevented from tilting due to process change by the arrangement of the softening fire gun.
When the invention is actually used, the specific process is as follows, the hot end production flow of the photovoltaic rolled glass is as follows: smelting furnace, transverse passage, branch passage, overflow port, calendering, annealing in annealing kiln, etc. Due to the requirements of traditional market users on the width of the glass sheet, traditional design, installation and the like, the width of the overflow port has certain requirements, corresponding forming equipment is mainly manufactured and used in a matched mode, and relatively mature technological conditions exist in production for many years. To meet the large demand of the ultra-wide format by the users on the market today, many improvements from equipment facilities to process conditions are necessary, and for ease of illustration, the production of ultra-wide glass sheets with a thickness of 2.5mm is now described in detail.
And (3) installing the special-shaped refractory square bricks 3. The square brick is the key for connecting the branch passage and the overflow port of the tank furnace, a pair of square bricks at 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, the special-shaped refractory square bricks are installed, the inner end surface 301 of the square brick is stably connected with the inside of the branch passage, the outer end surface 302 of the square brick is stably connected with the guarding brick 601, the normality is confirmed, the arc surface of the inner side surface 303 of the square brick is utilized, the whole structure is smooth and stable, no space for retaining glass to cause temperature inconsistency exists, the flow of glass melt is smooth, and the normal requirements for the production uniformity and consistency of the glass are ensured. Due to the special-shaped structure, the outer end face is reduced by about 250mm in width, and the width can be increased by about 500mm on both sides. Because the temperature is above 1200 ℃, preheating is needed before the square bricks are fixedly installed in order to prevent the square bricks from cracking due to sudden heating.
And installing the brick guarding 6 and the adjusting integrated device. The ultra-wide glass plate needs a large adjusting space for brick guarding and adjusting integrated devices, in the invention, the adjusting device is provided with an adjusting handle initial positioning and angle adjusting series of holes 603, the innermost hole position can be fixed on an adjusting support by bolts, thus the initial position of the brick can be greatly widened, and then the adjusting width range can be further enlarged by adjusting the handle 602, the position adjusting screw 604, the movable block 605 and the adjusting device base 606.
And (5) installing the hanging brick heat preservation device 3. The glass melting furnace has the main function of ensuring the temperature of the glass melt at the overflow port and meeting the defects of ultra-wide glass, particularly the edge part of the ultra-wide glass caused by insufficient heat. The brick hanging blocks 403 are strung on the brick hanging framework 402, the brick hanging heat preservation device 3 is hung on the overflow port through the hanging holes 404 to be preheated, and then the brick hanging handle 401 is used for placing the brick hanging heat preservation device 3 on the special-shaped refractory square brick 3 after the brick hanging frame reaches a certain degree, so that heat dissipation is well shielded, the temperature of the glass melt of the whole overflow port is raised by 20-30 ℃ compared with that before covering, and the requirement of production on temperature is guaranteed.
A calender 7 equipped with an elongated calender roll with a shallow pattern is used. After the calendering roller is modified, the width of the calendering roller is lengthened by 100-400 mm, the flower pattern of the calendering roller adopts a shallow pattern, the side length of the bottom surface of the regular triangular frustum with the shallow pattern 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 the frustum is 0.05-0.20 mm; the regular triangular pyramid platforms with patterns on the bottom surface of the glass are arranged in order in the transverse direction and the longitudinal direction, and the mutual gap of the three-dimensional patterns is 0.02-0.2 mm. This ensures, on the one hand, the need for an ultra wide width and, at the same time, increases the light transmission of the glass sheet.
And (4) installing and adjusting the softening fire gun 8. The long-term production knowledge of the photovoltaic glass shows that on the premise that the temperature of the overflow port glass melt is constant, one glass plate strip is produced by the pressure of the pressing bar, and the other glass plate strip is produced by dragging, namely the increase of the overall traction rate, but the new problem after the increase of the traction rate is that the glass plate strip is easy to be in a suspended state, namely the tilting phenomenon, so that new defects on the plate surface are generated. After the softening fire gun device 8 is installed, the hard glass is softened during heating and falls onto the conveying roller again, and the glass stably enters the annealing kiln for annealing.
And (5) developing production process condition parameters. Installation of equipment and facilities is a prerequisite, and development of products suitable for each variety, thickness and specification by using these hardware requires development of respective production process condition parameters. By groping and summarizing, the following is basically:
the running speed of the calendering roller is 500-750 cm/min, the secondary roller is 550-750 cm/min, the roller table is 550-800 cm/min, and the main transmission is 800-1200 cm/min.
Annealing kiln annealing curve a1 zone temperature: the temperature of the edge part is 500-600 ℃ and the temperature of the middle part is 500-650 ℃; temperature in zone a 2: the temperature of the edge part is 500-550 ℃ and the temperature of the middle part is 500-620 ℃; temperature in zone B: the temperature of the edge part is 400-500 ℃, and the temperature of the middle part is 400-550 ℃; temperature in zone C: the temperature of the edge is 300-400 ℃ and the temperature of the middle is 300-450 ℃.
Through the development of equipment facilities, relevant process conditions and the like, the ultra-wide photovoltaic glass plate with high transmittance is realized, the width of a single glass plate produced in a double-width mode can reach more than 1200mm (the 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 is increased by 0.2% compared with that of a common photovoltaic glass plate.
This application designs one set of special-shaped refractory square brick of special design: the smooth switching of the refractory bricks inside and the refractory bricks at the edges of the branch passages can be realized, the smooth transition between the overflow port and the brick guarding can be met, and the molten glass can flow stably without exception. Designing a set of hanging brick heat preservation device: the heat-insulating brick is installed on a special hoisting frame and is integrally changed on a square brick in a full length mode, and the heat-insulating brick has the function of making up for the heat change caused by the change of the flowing state of channel glass melt and the defect caused by heat loss at the edge of the ultra-wide glass plate. Designing a brick guarding and adjusting integrated device: the brick guard is designed with a special connecting hole and a front-back movement mechanism which are connected into a whole through bolts, so that the width adjustment range of the glass plate can be enlarged. Designing an elongated calendering roll with shallow patterns: the depth of the patterns is reduced to produce the light pattern glass and increase the transmittance. A special fire gun heating device is designed to prevent the glass plate belt from tilting caused by process change. According to the method, the production process parameters of the ultra-wide breadth glass plate are developed, so that the requirement of mass production of the ultra-wide breadth glass plate is well met.
In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.
It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. 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.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the application of the principles of the technology. It will be understood by those skilled in the art that the present invention 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 invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the specific embodiments described herein, and may include more effective embodiments without departing from the spirit of the present invention, and the scope of the present invention 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 photovoltaic glass plate production device comprises square bricks, a brick guarding device, a calender and a roller table which are arranged between a tank furnace and an annealing kiln, wherein the square bricks are sequentially provided with a flame blocking brick, a brick hanging heat preservation device and an overflow port fire gun; the composite refractory square brick comprises a stainless steel shell, the shape and the size of the stainless steel shell are matched with those of a refractory brick, the refractory 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, and the composite refractory square brick further comprises an adjusting device base, a position adjusting lead screw 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 lead screw penetrates through the screw hole of the sliding block to be in screw connection;
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 calendering roller on the calender is 100-400 mm longer than that of the original roller, and the calendering roller is provided with a shallow pattern consisting of regular triangular pyramid platforms; the method comprises the following steps:
a: after passing through the outlet of the tank furnace, the glass is subjected to heat preservation sequentially by a brick guarding device and a brick hanging heat preservation device, the integrated brick guarding device can realize the rapid adjustment of the width according to an adjusting device, and the glass enters a calender without falling slag in the adjusting process;
b: the method comprises the following steps of (1) calendering glass by a calender, calendering the glass by lengthened calendering rollers, enabling the running speed of the calendering rollers to be 500-750 cm/min, enabling an auxiliary roller to be 550-750 cm/min, enabling a roller table to be 550-800 cm/min, enabling main transmission to be 800-1200 cm/min, and enabling the glass to enter the roller table;
c: the softening fire guns on the roller table heat the edges of the glass to keep the high temperature of the edge glass, so that the damage on the roller table is avoided, and then the glass enters an annealing kiln;
d: after the glass enters an annealing kiln for returning goods, cooling a finished product; the temperature of the annealing furnace annealing curve A1 area is as follows: the temperature of the edge part is 500-600 ℃ and the temperature of the middle part is 500-650 ℃; temperature in zone a 2: the temperature of the edge part is 500-550 ℃ and the temperature of the middle part is 500-620 ℃; temperature in zone B: the temperature of the edge part is 400-500 ℃, and the temperature of the middle part is 400-550 ℃; temperature in zone C: the temperature of the side part is 300-400 ℃ and the temperature of the middle part is 300-450 ℃.
2. A method of producing an ultra-wide high transmittance photovoltaic glass sheet in accordance with claim 1, wherein: one side or two side walls of the stainless steel shell comprise arc-shaped missing parts.
3. A method of producing an ultra-wide high transmittance photovoltaic glass sheet in accordance with claim 2, wherein: the radius of the arc-shaped missing part is 100-200 mm.
4. A method of producing ultra-wide width high transmittance photovoltaic glass sheets in accordance with claim 3, wherein: the thickness of the stainless steel shell is 5-50 mm.
5. A method of producing an ultra-wide high transmittance photovoltaic glass sheet in accordance with claim 1, wherein: the method comprises the following steps: the regular triangular pyramid platforms with patterns on the bottom surface of the glass are arranged in order 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 of claim 5, wherein the method comprises the steps of: the side length of the bottom surface of the regular triangular frustum is 0.6-1.5 mm, the side length of the top surface is 0.4-1.0 mm, the radius of the smooth connection arc is 0.15-1.20 mm, and the height of the frustum is 0.05-0.20 mm.
7. A method of producing ultra-wide-width high-transmittance photovoltaic glass sheets as claimed in any one of claims 1 to 6, wherein: the softening firearms include firearms adjusting support, the fixed firearms pipe that is provided with on the firearms adjusting support, the fixed firearms head that sets up of one end of firearms pipe, the other end respectively with gas pipeline and compressed air pipeline intercommunication, the gas pipeline on be provided with gas relief pressure valve, gas manometer and gas valve, the compressed air pipeline on be provided with compressed air valve, compressed air relief pressure valve and air pressure gauge.
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| CN202210170829.0A CN114560621B (en) | 2022-02-24 | 2022-02-24 | Production method of ultra-wide-breadth high-transmittance photovoltaic glass plate |
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| CN202210170829.0A CN114560621B (en) | 2022-02-24 | 2022-02-24 | Production method of ultra-wide-breadth high-transmittance photovoltaic glass plate |
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| CN114560621B (en) | 2023-10-24 |
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