High-strength aluminum alloy photovoltaic curtain wall bonded and sealed by modified lignin

Abstract

The utility model relates to the technical field of photovoltaic curtain walls, in particular to a high-strength aluminum alloy photovoltaic curtain wall bonded and sealed by modified lignin, which comprises an aluminum alloy stand column, aluminum alloy cross beams are arranged on the left side and the right side of the aluminum alloy stand column through connecting inserting cores, and the aluminum alloy stand column is fixed on a wall surface through a steel connecting piece. Thin film power generation panels are installed on the surfaces of the aluminum alloy cross beams, sealant is filled between the thin film power generation panels, and buckle plate assemblies are installed on the surfaces of the thin film power generation panels. The buckle plate assembly comprises a fixed buckle plate, the fixed buckle plate is installed on the aluminum alloy stand column through a bolt, an installation hole is formed in the surface of the fixed buckle plate, a fixed plate is further installed on the surface of the fixed buckle plate, and adsorption cotton is arranged on the side, close to the thin film power generation panel, of the fixed plate. The adsorption cotton is attached to the surface of the thin film power generation panel. According to the utility model, sprayed rainwater can be adsorbed through the adsorption cotton.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic curtain walls, in particular to a high-strength aluminum alloy photovoltaic curtain wall that utilizes modified lignin for bonding and sealing. Background Art

[0002] Photovoltaic curtain walls are a new building material that combines solar photovoltaic technology with architectural curtain wall technology. Photovoltaic curtain walls utilize the photoelectric effect to convert sunlight photon energy into electrical energy. Solar cells use sunlight to move electrons in exposed electrolytes or semiconductor materials, generating voltage and current. This technology combines photovoltaic power generation with curtain wall technology, converting solar energy, which traditional curtain walls attempt to block from outside buildings, into electricity that is beneficial to people.

[0003] After a period of use, dust will accumulate on the surface of the photovoltaic curtain wall, affecting the photovoltaic conversion efficiency of the power generation panel;

[0004] An existing publicly available technical solution, with publication number CN220266946U, discloses a green building photovoltaic curtain wall comprising a wall and double-glazed glass mounted on the wall. The power generation panel is positioned between the inner and outer layers of the double-glazed glass. A flushing device is provided on the surface of the double-glazed glass. The flushing device comprises a water reservoir mounted on one side of the wall and a booster pump mounted on the side of the reservoir. The flushing device ensures that, during use, rainwater is collected in the reservoir and then pumped to a nozzle for spraying to flush the double-glazed glass, clearing dust.

[0005] When the above technical solution is actually implemented, the flushing device sprays the filtered rainwater on the curtain wall to achieve a cleaning effect. However, the sprayed water cannot be processed and will drip down the curtain wall, which is not very friendly to pedestrians and vehicles walking under the curtain wall. Summary of the Invention

[0006] The purpose of the utility model is to provide a high-strength aluminum alloy photovoltaic curtain wall that is bonded and sealed using modified lignin, which can absorb sprayed rainwater through adsorption cotton to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-strength aluminum alloy photovoltaic curtain wall using modified lignin bonding and sealing, comprising aluminum alloy columns, aluminum alloy crossbeams being provided on both left and right sides of the aluminum alloy columns via connecting inserts, the aluminum alloy columns being fixed to the wall surface via steel connectors, thin-film power generation panels being mounted on the surfaces of the aluminum alloy crossbeams, sealant being filled between the thin-film power generation panels, and gusset plate assemblies being mounted on the surfaces of the thin-film power generation panels;

[0008] The gusset plate assembly includes a fixed gusset plate, and the fixed gusset plate is installed on the aluminum alloy column by bolts. A mounting hole is opened on the surface of the fixed gusset plate. A fixing plate is also installed on the surface of the fixed gusset plate, and adsorption cotton is provided on the side of the fixed plate close to the thin-film power generation panel.

[0009] Preferably, the adsorption cotton is in contact with the surface of the thin-film power generation panel, and the fixing plate is fixed to the fixing buckle plate by bolts.

[0010] Preferably, the position of the adsorption cotton matches the position of the sealant.

[0011] Preferably, a spray assembly for spraying water is also provided on the gusset plate assembly, and a limiting assembly is provided between the spray assembly and the gusset plate assembly.

[0012] Preferably, the spray assembly includes a water spray pipe, a plurality of equidistant and evenly distributed water spray heads are installed below the water spray pipe, and a support rod is fixedly provided on one side of the water spray pipe.

[0013] Preferably, a water inlet pipe is provided at the input end of the water spray pipe, and the end of the water inlet pipe is connected to a water storage bucket, and a limiting hole is provided at the top of the support rod.

[0014] Preferably, the limiting assembly includes a positioning rod passing through the limiting hole, the outside of the positioning rod is fixedly connected to an anti-slip plate, and a connecting spring is installed between the anti-slip plate and the fixed buckle plate, one side of the positioning rod is connected to a connecting block, and the connecting block passes through one end of the fixed buckle plate and is fixedly provided with a sliding block.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. Through the adsorption cotton set, the sprayed water can flow along the thin-film power generation panel to the adsorption cotton, which absorbs the water to prevent rainwater from dripping;

[0017] 2. The limit assembly is set to facilitate the disassembly of the spray assembly, and the spray assembly is installed on the gusset assembly without affecting the normal installation of the thin-film power generation panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is the overall structural view of the utility model;

[0020] Figure 2 This is a schematic structural diagram of a thin-film power generation panel of the present invention;

[0021] Figure 3 For the utility model Figure 1 A magnified view of middle A;

[0022] Figure 4 This is a structural diagram of the positioning rod of the utility model.

[0023] Description of reference numerals:

[0024] 1. Aluminum alloy column; 2. Aluminum alloy beam; 3. Clamp plate assembly; 301. Fixed clamp plate; 302. Mounting hole; 4. Spray assembly; 401. Water spray pipe; 402. Water spray head; 403. Support rod; 404. Limit hole; 5. Limit assembly; 501. Sliding block; 502. Connecting block; 503. Positioning rod; 504. Connecting spring; 505. Anti-slip plate; 6. Thin-film power generation panel; 7. Sealant; 8. Fixed plate; 9. Adsorption cotton. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] The utility model provides a technical solution:

[0027] See also Figures 1 to 2 A high-strength aluminum alloy photovoltaic curtain wall using modified lignin bonding and sealing, comprising an aluminum alloy column 1, with aluminum alloy crossbeams 2 provided on both sides of the aluminum alloy column 1 via connecting inserts, the aluminum alloy column 1 being fixed to the wall surface via steel connectors, thin-film power generation panels 6 being mounted on the surface of the aluminum alloy crossbeams 2, and sealant 7 being filled between the thin-film power generation panels 6, and gusset plate assemblies 3 being mounted on the surface of the thin-film power generation panels 6;

[0028] The gusset plate assembly 3 includes a fixed gusset plate 301, and the fixed gusset plate 301 is installed on the aluminum alloy column 1 by bolts. A mounting hole 302 is opened on the surface of the fixed gusset plate 301. A fixed plate 8 is also installed on the surface of the fixed gusset plate 301, and an adsorption cotton 9 is provided on the side of the fixed plate 8 close to the thin-film power generation panel 6.

[0029] The adsorption cotton 9 is in contact with the surface of the thin-film power generation panel 6 , and the fixing plate 8 is fixed to the fixing clip plate 301 by bolts. The position of the adsorption cotton 9 is adapted to the position of the sealant 7 .

[0030] By adopting the above technical solution, the sprayed water can flow along the thin-film power generation panel 6 to the adsorption cotton 9, and the adsorption cotton 9 absorbs the water to prevent rainwater from dripping. An aluminum alloy column 1 is installed on the wall of the building. The aluminum alloy column 1 is fixed to the wall through a steel link. Then, an aluminum alloy beam 2 is fixed on the left and right sides of the aluminum alloy column 1 through a connecting plug. After the thin-film power generation panel 6 is installed in the corresponding position, the positive and negative terminal heads of the component are embedded in the inside of the aluminum alloy column 1 through the small holes on the aluminum alloy column 1. Each terminal head is connected in turn, and the aluminum alloy pressure plate is fixed with bolts. Then, the gusset plate assembly 3 and the pressure block are installed in turn. Lignin-based adhesive is injected between the thin-film power generation panels 6 to form a sealant 7. The synthesis of lignin-based adhesive

[0031] First, 1 g of α-bromophenylacetic acid was dissolved in 20 mL of dichloromethane in a round-bottom flask. Next, 1.18 g of oxalyl chloride was slowly added dropwise to the flask at 0°C, and the mixture was stirred at 40°C for 5 h. Excess oxalyl chloride and dichloromethane were removed by evaporation to obtain α-bromophenylacetic acid chloride. Subsequently, α-bromophenylacetic acid chloride was dissolved in 5 mL of DMF and slowly added to the alkaline lignin solution (0.83 g) and DMAP (0.57 g). The mixture was stirred at 25°C for 24 h, precipitated in deionized water, and then repeatedly washed with deionized water, filtered, repeatedly washed with methanol, and dried under vacuum at 40°C until constant weight was achieved.

[0032] A lignin graft copolymer (L-PLMA) was prepared by photoinduced metal-free ATRP: L-Br (0.012 g, 0.01 mmol Br), oxalyl chloride (0.28 mg, 0.001 mmol), and LMA (0.508 g, 2 mmol) were used as an organic photocatalyst in a round-bottom flask. 10 mL of THF and 0.2 mL of DMF were added. After deoxygenation by nitrogen purging for 30 minutes, the metal-free ATRP of LMA was initiated by continuous stirring at room temperature for 4 hours under low-intensity UV LED light (0.02 mW cm²). The resulting lignin graft copolymer (L-PLMA) was precipitated in methanol, filtered, and vacuum-dried to a constant weight. Subsequently, a similar procedure was followed to prepare the lignin graft copolymer (LP) (LMA-FMA). The lignin graft copolymers were coded as LP (LMA-FMAx), where x represents the molar ratio of FMA to total monomers (60%, 70%, 80%, and 90%). In addition, linear copolymers MP (LMA-FMA8) were prepared using methyl -bromophenylacetate as the initiator;

[0033] Taking the preparation of LP(LMA-FMA8)-BMI10 as an example, 0.5 g of L-P(LMA-FMA8) (2.2 mmol furan groups) and 0.04 g of maleimide were dissolved in 10 mL of dichloromethane. The solution was then transferred to a polytetrafluoroethylene mold. After complete evaporation of the dichloromethane at room temperature, the resulting film was heated at 40°C in a vacuum for 72 h, forming the lignin-derived elastomer LP(LMA-FMA8)-BMI10 with a dynamically cross-linked network. Subsequently, a series of lignin-derived elastomers, LP(LMA-FMA8)-BMIx, were synthesized following similar procedures, where x represents the molar ratio of maleimide groups to furan groups (5%, 10%, 15%, and 20%).

[0034] Specifically, such as Figure 3 and Figure 4 As shown, a spray assembly 4 for spraying water is also provided on the gusset assembly 3, and a limiting assembly 5 is provided between the spray assembly 4 and the gusset assembly 3. The spray assembly 4 includes a water spray pipe 401, and a number of equidistant and evenly distributed water spray heads 402 are installed below the water spray pipe 401. A support rod 403 is fixedly provided on one side of the water spray pipe 401, and a water inlet pipe is provided at the input end of the water spray pipe 401, and a water storage bucket is connected to the end of the water inlet pipe. A limiting hole 404 is provided on the top of the support rod 403, and the limiting assembly 5 includes a positioning rod 503 passing through the inside of the limiting hole 404, and an anti-slip plate 505 is fixedly connected to the outside of the positioning rod 503, and a connecting spring 504 is installed between the anti-slip plate 505 and the fixed gusset plate 301, and a connecting block 502 is connected to one side of the positioning rod 503, and the connecting block 502 passes through one end of the fixed gusset plate 301 and is fixed with a sliding block 501.

[0035] By adopting the above technical solution, a water storage barrel is located on the top of the building to store rainwater, and a booster pump is also provided on the water inlet pipe to spray the rainwater in the water storage barrel through the sprinkler head 402 on the sprinkler pipe 401. The spraying direction of the sprinkler head 402 is toward the thin-film power generation panel 6. The sprinkler pipe 401 can be directly inserted into the interior of the mounting hole 302 through the support rod 403. At this time, the sliding block 501 moves upward, driving the positioning rod 503 to move upward. After squeezing the connecting spring 504, the support rod 403 can be directly inserted into the mounting hole 302. The sliding block 501 is released, and under the action of the connecting spring 504, the positioning rod 503 is inserted into the limiting hole 404 to fix the support rod 403.

[0036] Working principle: Install aluminum alloy columns 1 on the wall of the building, and fix the aluminum alloy columns 1 to the wall through steel connectors. Then, install aluminum alloy crossbeams 2 on the left and right sides of the aluminum alloy columns 1 through connecting plugs. After the thin-film power generation panel 6 is installed in the corresponding position, embed the positive and negative terminal blocks of the component into the inside of the aluminum alloy column 1 through the small holes on the aluminum alloy column 1. Connect each terminal block in turn, fix the aluminum alloy pressure plate with bolts, and then install the gusset plate assembly 3 and the pressure block in turn. Inject lignin-based adhesive between the thin-film power generation panels 6 to form a sealant 7. The water spray pipe 401 can be directly inserted into the inside of the installation hole 302 through the support rod 403. The sliding block 501 moves upward, driving the positioning rod 503 to move upward. After squeezing the connecting spring 504, the support rod 403 can be directly inserted into the mounting hole 302. The sliding block 501 is released, and under the action of the connecting spring 504, the positioning rod 503 is inserted into the limiting hole 404 to fix the support rod 403. The water storage barrel is located on the top of the building to store rainwater. A booster pump is also provided on the water inlet pipe to spray the rainwater in the water storage barrel through the sprinkler head 402 on the sprinkler pipe 401. The spraying direction of the sprinkler head 402 is toward the thin-film power generation panel 6. The sprayed water can flow along the thin-film power generation panel 6 to the adsorption cotton 9. The adsorption cotton 9 absorbs the water to prevent rainwater from dripping.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-strength aluminum alloy photovoltaic curtain wall using modified lignin bonding and sealing, comprising aluminum alloy columns (1), characterized in that: Aluminum alloy crossbeams (2) are provided on both left and right sides of the aluminum alloy column (1) via connecting inserts; the aluminum alloy column (1) is fixed to the wall surface via steel linking members; thin-film power generation panels (6) are installed on the surface of the aluminum alloy crossbeams (2); sealant (7) is filled between the thin-film power generation panels (6); and a gusset plate assembly (3) is installed on the surface of the thin-film power generation panels (6); The gusset plate assembly (3) comprises a fixed gusset plate (301), and the fixed gusset plate (301) is mounted on the aluminum alloy column (1) by means of bolts, a mounting hole (302) is provided on the surface of the fixed gusset plate (301), a fixed plate (8) is further mounted on the surface of the fixed gusset plate (301), and adsorption cotton (9) is provided on a side of the fixed plate (8) close to the thin-film power generation panel (6).

2. The high-strength aluminum alloy photovoltaic curtain wall using modified lignin bonding and sealing according to claim 1, characterized in that: The adsorption cotton (9) and the surface of the thin-film power generation panel (6) are bonded to each other, and the fixing plate (8) is fixed to the fixing buckle plate (301) by means of bolts.

3. The high-strength aluminum alloy photovoltaic curtain wall using modified lignin bonding and sealing according to claim 1, characterized in that: The position of the adsorption cotton (9) matches the position of the sealant (7).

4. The high-strength aluminum alloy photovoltaic curtain wall using modified lignin bonding and sealing according to claim 1, characterized in that: The gusset plate assembly (3) is further provided with a spray assembly (4) for spraying water, and a limit assembly (5) is provided between the spray assembly (4) and the gusset plate assembly (3).

5. The high-strength aluminum alloy photovoltaic curtain wall using modified lignin for bonding and sealing according to claim 4, characterized in that: The spray assembly (4) comprises a water spray pipe (401), a plurality of equidistant and evenly distributed water spray heads (402) are installed below the water spray pipe (401), and a support rod (403) is fixedly provided on one side of the water spray pipe (401).

6. The high-strength aluminum alloy photovoltaic curtain wall using modified lignin for bonding and sealing according to claim 5, characterized in that: The input end of the water spray pipe (401) is provided with a water inlet pipe, and the end of the water inlet pipe is connected to a water storage bucket. The top of the support rod (403) is provided with a limiting hole (404).

7. The high-strength aluminum alloy photovoltaic curtain wall using modified lignin bonding and sealing according to claim 6, characterized in that: The limiting assembly (5) comprises a positioning rod (503) passing through the inside of the limiting hole (404); the outside of the positioning rod (503) is fixedly connected to an anti-slip plate (505); a connecting spring (504) is installed between the anti-slip plate (505) and the fixed buckle plate (301); one side of the positioning rod (503) is connected to a connecting block (502); and one end of the connecting block (502) passing through the fixed buckle plate (301) is fixedly provided with a sliding block (501).

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