Implementation method for multistage drainage of photovoltaic support

Abstract

The invention provides a photovoltaic support multi-stage drainage implementation method which comprises the following steps that S1, an oblique beam with an n-shaped section is arranged in the longitudinal direction of a roof and serves as a first-stage water catchment channel, and holes are formed in the beam bottoms of the two ends of the oblique beam and connected with drainage pipes; s2, transversely installing an n-shaped groove strip in the long edge direction of the photovoltaic module to serve as a second-stage water guide channel; the intersection of the n-shaped groove strip and the oblique beam is in butt joint through a water outlet, it is ensured that water flow can be longitudinally converged into the oblique beam, and a guide mechanism used for achieving inclination of the n-shaped groove strip is arranged on the side face of the oblique beam; s3, a plurality of flow dividing pieces used for achieving water flow guiding and flow dividing are arranged on the n-shaped groove strips at equal intervals, and the water flow guiding effect can be achieved; s4, transversely arranging and fixing the photovoltaic modules on the n-shaped groove strips at intervals of 3mm; the multi-stage water guide path integration is achieved, multi-stage ordered water guide is achieved, and the water drainage efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building integrated photovoltaics (BIPV), and particularly to a method for realizing multi-stage drainage of a photovoltaic support. BACKGROUND

[0002] With the wide application of solar photovoltaic power generation technology, the installation demand of photovoltaic support systems on various building roofs is increasing. During the operation of photovoltaic power stations, how to effectively drain rainwater and accumulated water is one of the key problems to ensure the long-term stable operation of the system. Especially on sloping roofs, if the drainage design is improper, rainwater may accumulate on the surface of photovoltaic modules or inside the support, which not only affects the power generation efficiency, but also may cause problems such as module hidden cracks, electrical safety hazards, and even structural corrosion.

[0003] At present, the common photovoltaic support drainage method mainly relies on the natural slope drainage of the roof or the design of a simple water guide groove. The traditional support system usually uses C-shaped or U-shaped steel as a guide rail, which has a certain water guide function, but the drainage path is single and the capacity is limited, and in rainy areas or heavy rain conditions, water overflow may occur due to poor drainage. Some systems attempt to leave gaps between modules for drainage, but lack a systematic multi-stage water guide structure, and water flow is easily dispersed, with low water guide efficiency, making it difficult to achieve orderly collection and rapid discharge.

[0004] Although there are some improvements in the existing drainage structure, such as opening drainage holes or installing water guide grooves on the guide rail, there are still the following technical defects: first, the structure is complex and inconvenient to install, increasing the construction difficulty and maintenance cost; second, the water guide continuity is poor, and the vertical and horizontal drainage paths do not connect smoothly, causing water flow to be easily blocked or scattered at the intersection of multiple paths; third, the installation gap of the photovoltaic module and the drainage function are not effectively integrated, and the drainage and structural support functions are separated, affecting the drainage efficiency and causing material waste; fourth, there is no adjustable guide mechanism, which cannot flexibly adjust the water guide angle according to the actual drainage demand. SUMMARY

[0005] To overcome the above problems, the purpose of the present application is to provide a method for realizing multi-stage drainage of a photovoltaic support with integrated multi-stage water guide paths, achieving multi-stage orderly water guide and high drainage efficiency.

[0006] The present application adopts the following scheme: a method for realizing multi-stage drainage of a photovoltaic support, the method comprising the following steps:

[0007] Step S1, arranging a diagonal beam with a H-shaped cross section along the longitudinal direction of the roof as a first-stage water collection channel, and opening holes in the beam bottom at both ends of the diagonal beam to connect the drainage pipe;

[0008] Step S2, install the inverted T-shaped groove as the secondary water guide channel in the long side direction of the photovoltaic module; the inverted T-shaped groove is connected with the inclined beam through the water outlet, which ensures that the water flow can be collected into the inclined beam, and the guide mechanism for realizing the inclination of the inverted T-shaped groove is arranged on the side of the inclined beam;

[0009] Step S3, a plurality of shunt components for realizing the water flow guide and shunt are arranged on the inverted T-shaped groove at equal intervals, which can realize the water flow guide;

[0010] Step S4, the photovoltaic module is arranged and fixed on the inverted T-shaped groove with a gap of 3mm, and the gap is used as the water inlet gap,

[0011] The surface rainwater can flow into the lower groove, and the gap between the photovoltaic modules is provided with an auxiliary water groove as the tertiary water guide channel,

[0012] The auxiliary water groove is connected with the inverted T-shaped groove, which collects the rainwater at the edge of the module and guides it to the inclined beam;

[0013] Step S5, the collected rainwater is guided out to the building drainage system through the inclined beam.

[0014] Further, a plurality of mounting holes are arranged on the inverted T-shaped groove at equal intervals, and the photovoltaic module is arranged and fixed on the inverted T-shaped groove through the bolts.

[0015] Further, the guide mechanism comprises a first support block, a plurality of first support blocks are arranged on the front surface of the inclined beam at equal intervals, an L-shaped support block is arranged on the upper surface of the leftmost first support block, a first motor is arranged on the L-shaped support block, a worm is connected to the output end of the first motor, a rotating shaft is arranged on the L-shaped support block and extends to the rightmost first support block and is connected through a bearing seat, a worm wheel engaged with the worm is arranged on the left end of the rotating shaft, a guide rail is arranged on the left side of the inverted T-shaped groove, a sliding block is arranged in the guide rail, a connecting rod is rotatably connected to the sliding block, the connecting rod is sleeved on the rotating shaft, a second support block corresponding to the first support block is arranged on the rear surface of the rear end of the inclined beam at equal intervals, a fixed block is arranged on the upper surface of the left and right ends of the second support block, and the fixed blocks at the left and right ends are rotatably connected with the rear end of the inverted T-shaped groove through a rotating shaft.

[0016] Further, the shunt component comprises a connecting block, a plurality of connecting blocks are arranged on the inverted T-shaped groove at equal intervals, a second motor is arranged on the upper surface of the connecting block, a shunt block matched with the inverted T-shaped groove is arranged at the end of the output shaft of the second motor, and the shunt block is arranged in the inverted T-shaped groove.

[0017] Further, a sealing rubber strip is arranged at the end of the shunt block.

[0018] Further, the V-shaped groove is provided with a water outlet corresponding to the inclined beam at both ends.

[0019] Further, all the abutted parts of the grooves, gaps between components and connecting points are waterproofed by weather-resistant sealant, and the inclined beam interfaces are doubly sealed to ensure the overall waterproof reliability of the system.

[0020] The present application has the advantages that: the present application forms a multi-stage water guide channel through the inclined beam, the V-shaped groove and the auxiliary water groove, and realizes the orderly collection and rapid discharge of water flow in combination with the guide mechanism and the flow divider, solves the problems of single drainage path, low water guide efficiency and easy water accumulation in the traditional drainage path, and has the advantages of improving the drainage efficiency, optimizing the compactness of the structure, enhancing the waterproof reliability and realizing the multi-stage orderly water guide. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a method flowchart of the present application.

[0022] Figure 2 is a structure schematic diagram of the first state of the present application.

[0023] Figure 3 is a structure schematic diagram of the second state of the present application.

[0024] Figure 4 is a structure schematic diagram of the V-shaped groove.

[0025] Figure 5 is a structure schematic diagram of the flow divider. DETAILED DESCRIPTION

[0026] The present application will be further described below in combination with the drawings.

[0027] Please refer to Figure 1 The present application is a kind of photovoltaic support multi-stage drainage implementation method, the method comprises the following steps:

[0028] Step S1, the inclined beam 1 of V-shaped section is arranged along the longitudinal direction of the roof as a first-stage water collection channel, the beam bottom of the both ends of the inclined beam 1 is provided with a hole, and the drainage pipe 2 is connected;

[0029] Step S2, the V-shaped groove 3 is installed transversely in the long side direction of the photovoltaic module as a second-stage water guide channel; the V-shaped groove 3 is connected to the inclined beam 1 through the water outlet at the intersection, which ensures that the water flow can be longitudinally collected into the inclined beam 1, and the guide mechanism 4 for realizing the inclination of the V-shaped groove 3 is arranged on the side of the inclined beam 1;

[0030] Step S3, a plurality of flow dividers 5 for realizing the flow direction and distribution are arranged on the V-shaped groove 3 at equal intervals, which can realize the flow direction effect;

[0031] Step S4, the photovoltaic module is fixed on the Z-shaped groove 3 with a 3mm gap, which is used as a water inlet gap to make the surface rainwater flow into the lower groove. The gap between the photovoltaic modules is provided with an auxiliary water groove 6 as a third water guide channel. The auxiliary water groove 6 is connected with the Z-shaped groove 3 to collect the rainwater at the edge of the module and guide it to the inclined beam.

[0032] Step S5, the collected rainwater is guided out to the building drainage system through the inclined beam.

[0033] Step S1, the water flow is drained through the auxiliary water groove to step S2, the Z-shaped groove and the inclined beam drain water through the bottom opening. The inclined beam drains water through the bottom opening and through the drain pipe to the falling water area.

[0034] The Z-shaped inclined beam refers to a metal member with a cross-section in the shape of continuous wave peaks and troughs, which can be made by cold bending forming process. The groove space forms a continuous drainage channel. This structure increases the water section to improve the drainage efficiency, and the wave peak provides structural support.

[0035] The Z-shaped groove refers to a water guide member arranged horizontally. It can be made of aluminum alloy extrusion forming, and the internal cavity forms a flow guide path with the lower water outlet of the inclined beam. This design realizes the connection of regional water collection and longitudinal water transport functions.

[0036] The flow distribution device refers to a guide device arranged in the groove. It can be a rotatable baffle structure, which controls the direction of water flow by adjusting the angle of the baffle. This device optimizes water flow distribution to avoid local accumulation.

[0037] The gap between photovoltaic modules refers to the water inlet channel reserved between adjacent modules, which can be controlled within the range of 3-5mm. This gap cooperates with the auxiliary water groove to form a surface runoff collection system.

[0038] The auxiliary water groove refers to a water guide member installed below the gap between the modules. It can be a U-shaped plastic groove with an inclination angle consistent with the water guide direction of the groove. This structure guides the surface rainwater into the secondary water guide system.

[0039] Specifically, the roof rainwater first enters the auxiliary water groove through the gap between the photovoltaic modules, forming the initial collection of the third water guide channel. The auxiliary water groove guides the water flow to the horizontally arranged Z-shaped groove, which is evenly distributed to different sections under the action of the flow distribution device. When the water flow reaches the intersection of the groove and the inclined beam, it enters the longitudinal main drainage channel through the downward inclined flow guide plate. The internal continuous space of the inclined beam collects water from different regions, and finally drains into the building drainage system through the bottom drain pipe. The guide mechanism optimizes the water flow speed by adjusting the inclination angle of the groove, and the sealing strip prevents interface leakage. The weather-resistant sealing treatment ensures the waterproof reliability of the system.

[0040] Compared with the prior art, the traditional single-stage drainage structure only relies on longitudinal guide rail drainage, and the present scheme realizes the hierarchical treatment of surface runoff, regional water collection and main discharge through a three-stage water guide system. In the prior art, the gap between components is only used as a drainage channel, and the present scheme innovatively combines gap drainage with water guide groove structure to form a three-dimensional drainage network. Compared with the traditional fixed water guide structure, the guide mechanism provided in the present scheme can dynamically adjust the water guide angle according to the amount of drainage, thereby avoiding the splashing problem caused by excessive water flow speed.

[0041] Through the above technical scheme, the present application effectively solves the problem of poor drainage of photovoltaic support under rainy conditions, and realizes the rapid collection and discharge of roof rainwater. The three-stage water guide structure significantly improves the capacity of the drainage system and prevents water accumulation on the surface of the components. The connection design of the groove and the inclined beam optimizes the water flow path and avoids the risk of blockage caused by the intersection of multi-directional water flow. The synergistic effect of the component gap and the water guide groove ensures the structural strength while achieving efficient drainage, reducing the use of additional water guide components. The adjustable guide mechanism ensures the adaptability of the drainage of roofs with different slopes, and the sealing treatment improves the reliability of the system during long-term operation.

[0042] Please continue to refer to Figures 2 to 4 As shown in the figure, in an embodiment of the present application, a plurality of mounting holes 31 are arranged at equal intervals on the U-shaped groove 3, and the photovoltaic components are fixed on the U-shaped groove 3 through bolt installation around the four sides.

[0043] Among them, the mounting hole refers to a through-hole structure opened on the surface of the U-shaped groove at a predetermined interval, which can be realized by stamping or drilling process, and is used to provide a fixed point for the bolt to pass through.

[0044] Among them, the bolt installation and fixation refers to the rigid connection of the photovoltaic component and the groove through a threaded fastener, which can be realized by using stainless steel bolts with lock washers, and is used to ensure that the component and the water guide structure form a stable whole.

[0045] Specifically, the mounting holes are evenly distributed along the length direction of the groove, and their interval can be adaptively adjusted according to the size of the component. During installation, the frame edge of the photovoltaic component is attached to the surface of the groove, and the bolt is sequentially passed through the preset hole of the component frame and the mounting hole of the groove, and the nut is tightened to complete the fixation. This structure makes the component installation position adjustable, while maintaining the continuity of the groove water guide channel.

[0046] Compared with the prior art, the existing photovoltaic support mostly uses welding or buckle type connection, which has the problems of high installation precision requirement and difficulty in maintenance. The present scheme combines standard mounting holes with bolts, which not only reduces the dependence on the machining precision of the groove, but also realizes non-destructive disassembly, facilitating the replacement or maintenance of the components in the later stage.

[0047] By the technical scheme, the application solves the complex construction problem caused by separation of the traditional water guide groove and the assembly mounting structure, and realizes integrated design of the water guide function and the support function. The bolt fixing mode avoids shielding of the water guide section of the groove while ensuring the structural strength, and ensures smooth flow of rainwater along the inner cavity of the groove.

[0048] Please continue to see Figures 2 to 4 As shown in the drawings, in an embodiment of the application, the guide mechanism 4 comprises a first support block 41, a plurality of first support blocks 41 are arranged equidistantly on the front surface of the front end of the inclined beam, an L-shaped support block 42 is arranged on the upper surface of the leftmost first support block 41, a first motor (not shown) is arranged on the L-shaped support block 42, a worm 43 is connected to the output end of the first motor, a rotating shaft 44 is arranged on the L-shaped support block 42 and extends to the rightmost first support block 41 and is connected by a bearing seat, a worm wheel 45 engaged with the worm 43 is arranged on the left end of the rotating shaft 44, a guide rail 46 is arranged on the left side of the H-shaped groove 3 at the front end, a sliding block 47 is arranged in the guide rail 46, a connecting rod 48 is rotatably connected to the sliding block 47, the connecting rod 48 is sleeved on the rotating shaft 44 at the end, a plurality of second support blocks 48 corresponding to the first support blocks 41 are arranged equidistantly on the rear surface of the rear end of the inclined beam 1, a fixing block 49 is arranged on the upper surface of each second support block 48 at the left and right ends, and the fixing blocks 49 at the left and right ends are rotatably connected to the rear end of the H-shaped groove 3 through a rotating shaft.

[0049] The first support block refers to a support structure fixed on the front surface of the inclined beam, which can be realized by welding or bolt connection, and is used to bear the L-shaped support block and the transmission component.

[0050] The L-shaped support block refers to a metal member with vertical and horizontal extension surfaces, which can be formed by bending a steel plate and provides a mounting space for the first motor.

[0051] The worm and the worm wheel refer to transmission components engaged with each other, which can be realized by steel gears with a module of 0.8-1.2, and are used to convert the motor power into the rotary motion of the rotating shaft.

[0052] The guide rail and the sliding block refer to guide components in sliding cooperation, which can be realized by a T-shaped slot aluminum profile combined with a nylon sliding block, and are used to constrain the transverse movement trajectory of the H-shaped groove.

[0053] The connecting rod refers to a connecting rod with the left and right ends hinged to the sliding block and the rotating shaft, respectively, which can be formed by a stainless steel round rod, and is used to convert the rotary motion of the rotating shaft into the linear displacement of the sliding block.

[0054] The second support block and the fixed block refer to the support structure arranged on the rear surface of the inclined beam, which can be a symmetrical welded part with the first support block, and provides a rotating fulcrum for the rear end of the Z-shaped groove strip through the rotating shaft.

[0055] Specifically, when the first motor drives the worm to rotate, the worm gear drives the rotating shaft to rotate synchronously, and the displacement of the end of the connecting rod causes the sliding block to move transversely along the guide rail. The linear displacement of the sliding block is transmitted to the front end of the Z-shaped groove strip through the connecting rod, causing the Z-shaped groove strip to deflect around the rotating shaft fulcrum at the rear end, thereby adjusting the overall inclination angle of the groove strip. The rotating shaft connection structure formed by the second support block and the fixed block at the rear end keeps the position stable during the inclination of the groove strip, ensuring the continuity of the water guide path.

[0056] Compared with the prior art, the water guide groove angle of the traditional photovoltaic support is fixed and cannot be adjusted according to the actual drainage requirements. The present scheme combines the worm gear transmission mechanism driven by the motor with the sliding guide rail to achieve dynamic adjustment of the water guide angle. In the prior art, the water guide groove and the support structure are rigidly connected, which can easily cause poor drainage due to installation errors. The present scheme allows the groove strip to adaptively adjust within a certain range through the cooperation of the rotating shaft connection and the hinged connecting rod, avoiding the influence of structural deformation on the drainage performance.

[0057] Through the above technical scheme, the present application can flexibly adjust the inclination angle of the water guide channel according to the roof slope or rainfall intensity, ensuring that the water flow is quickly collected into the primary water collection channel; through the synergistic effect of mechanical transmission and sliding guide, the problem of poor connection of the water guide path in the multi-stage drainage system is solved; the rotating shaft connection structure reduces the installation precision requirement and avoids the failure of water guide function caused by support deformation.

[0058] Please continue to refer to Figures 2 to 5 As shown in the figure, in an embodiment of the present application, the flow dividing piece 5 includes a connecting block 51, a plurality of connecting blocks 51 are arranged equidistantly on the Z-shaped groove strip 3, a second motor 52 is arranged on the upper surface of the connecting block 51, a flow dividing block 53 cooperating with the Z-shaped groove strip 3 is arranged at the end of the output shaft of the second motor 52, and the flow dividing block 53 is arranged in the Z-shaped groove strip 3.

[0059] The connecting block refers to a support structure fixed on the surface of the Z-shaped groove strip, which can be realized by metal stamping parts or injection molded parts, and is used to bear the second motor and maintain the relative position of the flow dividing block and the groove strip.

[0060] The second motor refers to a power device for driving the flow dividing block to rotate, which can be realized by a micro stepping motor or a servo motor, and transmits torque through the output shaft to adjust the angle of the flow dividing block.

[0061] The shunt block refers to a rotatable flow guide component arranged inside the groove strip, which can be realized by injection molding or aluminum alloy machining, and its cross-sectional shape matches the inner cavity of the groove strip, and the water flow path is changed by rotation.

[0062] Specifically, connection blocks are installed on the surface of the groove strip at a predetermined interval, and a second motor is fixed on the top of each connection block. The output shaft of the motor extends vertically downward into the interior of the groove strip, and the end is connected to the shunt block. The initial position of the shunt block is parallel to the inner wall of the groove strip, so that the water flows longitudinally along the groove strip. When shunting is required, the motor drives the shunt block to rotate around the output shaft to an inclined state, guiding the water flow to the drain at the side wall of the groove strip. The rotation angle of the shunt block can be adjusted by the motor control module, for example, the inclination angle is increased to speed up drainage during heavy rain, and the inclination angle is kept flat to maintain stable water flow during light rain.

[0063] Compared with the prior art, the shunt structure of the traditional water guide groove is mostly fixed baffle or opening, which cannot dynamically adjust the water flow direction according to the actual drainage demand, and is easy to cause local water accumulation or insufficient drainage efficiency. The present scheme realizes active control of the water flow direction by driving the rotatable shunt block by the motor, avoids the problem of reduced flow guide efficiency caused by dispersed water flow, and reduces the frequency of manual maintenance.

[0064] Through the above technical scheme, the present application can dynamically adjust the angle of the shunt block according to the rainfall variation, ensure that the water flow is orderly converged into the inclined beam, and avoid water accumulation in the interior of the groove strip; the close fit of the shunt block and the inner cavity of the groove strip can reduce water leakage and improve the flow guide efficiency; the modular design facilitates installation and maintenance, and reduces the risk of component corrosion caused by poor drainage.

[0065] Please continue to refer to Figure 5 As shown in the figure, in an embodiment of the present application, the end of the shunt block 53 is provided with a sealing rubber strip 54.

[0066] The shunt block refers to an adjustable flow guide component arranged inside the groove strip, which can be realized by injection molding of engineering plastic parts or stamping of metal parts, and the end extends to the inner wall of the groove strip to form a flow guide surface. The sealing rubber strip refers to an elastic sealing component attached to the end of the flow guide component, which can be realized by using ethylene propylene diene rubber or silicone material, and is fixed to the end edge of the shunt block by in-mold forming or gluing process.

[0067] Specifically, when the second motor drives the shunt block to rotate in the groove strip, the sealing rubber strip forms a flexible contact with the inner wall of the groove strip. During the flow guide process, the sealing rubber strip deforms under pressure to fill the assembly gap between the shunt block and the inner wall of the groove strip, forming a continuous sealing interface. When the water flow is guided along the inclined surface of the shunt block, the sealing rubber strip can prevent water from leaking from the contact gap between the flow guide surface and the side wall of the groove strip, and at the same time, it can buffer the mechanical vibration generated by the shunt block when it moves.

[0068] Compared with the prior art, the traditional flow guide member adopts rigid contact mode, which has leakage problem caused by assembly tolerance, and is prone to metal collision noise in frequent adjustment process. The elastic compensation characteristics of the end sealing rubber strip can not only eliminate the water leakage path, but also reduce the mechanical wear of the moving parts.

[0069] Through the above technical scheme, the present application effectively solves the water leakage problem caused by the loose contact between the flow guide member and the inner wall of the groove, and ensures the continuous flow state of the water flow during the guiding process. The buffering effect of the sealing rubber strip prolongs the service life of the flow dividing mechanism, reduces the noise caused by water flow impact, and improves the operation stability of the multi-stage drainage system.

[0070] Please continue to see Figure 4 As shown in the figure, in an embodiment of the present application, the V-shaped groove 3 is provided with a water outlet 7 corresponding to the inclined beam 1 at the front and rear ends, and the water outlet 7 is provided with a downward inclined flow guide plate 71.

[0071] The water outlet refers to an opening structure formed at the front and rear ends of the groove and connected with the longitudinal drainage channel of the inclined beam, which can be a rectangular or circular hole formed at the bottom of the groove by stamping process, used to realize the water flow transmission between the horizontal groove and the longitudinal inclined beam.

[0072] The flow guide plate refers to a metal or plastic sheet installed inside the water outlet and inclined at an angle, which can be connected with the inner wall of the water outlet by bolt fixation or welding, and the inclination angle can be set to 15-30 degrees, used to guide the water flow into the inclined beam in the preset direction.

[0073] Specifically, when the rainwater flows horizontally to the intersection area with the inclined beam through the groove, the water flow enters the first water collection channel of the inclined beam through the water outlet formed at the front and rear ends of the groove. The downward inclined structure of the flow guide plate forms a directional flow path under the action of gravity, avoiding splashing or stagnation of water flow at the intersection due to impact force dispersion. The sealed connection between the flow guide plate and the inner wall of the water outlet can prevent water leakage into the joint gap between the groove and the inclined beam, and the inclination angle can be adjusted according to the actual drainage demand to ensure the drainage efficiency under different rainfall intensities.

[0074] Compared with the prior art, the connection between the groove and the inclined beam in the traditional drainage structure usually adopts straight-through opening design, which is prone to flow disorder when the water flow directly discharges, causing water accumulation or splashing problems. The present application adds a flow guide plate inside the water outlet, which forms a controllable directional flow at the intersection, reducing the erosion of the inner wall of the inclined beam by water flow impact, and avoiding the decrease of drainage efficiency caused by disordered flow.

[0075] By the technical scheme, the application effectively solves the poor water guide continuity caused by poor connection of the longitudinal and transverse drainage paths in the prior art, and ensures that the water flow quickly and orderly completes path switching at the intersection of the multi-stage drainage channels through the directional guiding effect of the flow guide plate, reduces the risk of water accumulation caused by local blockage of the drainage system, and reduces the impact damage of the water flow to the support structure.

[0076] All groove strip abutments, component gaps, and connection points are waterproofed with weather-resistant sealant; the inclined beam interface is double-sealed to ensure the overall waterproof reliability of the system.

[0077] The weather-resistant sealant refers to an elastic sealing material that is resistant to ultraviolet light and temperature, and can be implemented using a silicone-based sealant, which can maintain long-term sealing performance when the photovoltaic support is exposed to outdoor environments. Double sealing refers to a combined structure using two different sealing methods, which can be implemented by setting a rubber sealing strip in combination with sealant filling. This design effectively blocks the possibility of rainwater penetrating from different directions.

[0078] Specifically, the abutment parts of the groove strips and the inclined beams, the gaps between the photovoltaic modules, and the fixed bolt connection points are filled with weather-resistant sealant using an injection process to form a continuous and uninterrupted waterproof layer. At the inclined beam interface, a prefabricated rubber sealing strip is first installed for physical blocking, and then weather-resistant sealant is applied to the outside of the joint for secondary protection, forming a complementary waterproof barrier with the two sealing methods. When the photovoltaic modules are arranged horizontally, the auxiliary water groove at the 3mm gap is treated with sealant filling at the connection part of the groove strip to prevent water from seeping into the support from the connection gap.

[0079] Compared with the prior art, traditional support systems often use single-layer treatment with ordinary sealant or rely solely on structural lap waterproofing, which is prone to cracking and leakage under the effects of thermal expansion and contraction and ultraviolet light. This scheme uses weather-resistant materials and a double-sealing structure to significantly improve the sealing durability of the joints while maintaining ease of construction, especially suitable for use in environments with large diurnal temperature differences and frequent rainfall.

[0080] Through the above technical scheme, the application effectively solves the technical defects of insufficient sealing performance at the joints of traditional photovoltaic support systems, prevents rainwater from seeping into the support through groove strip connection points, component gaps, and inclined beam interfaces, reduces the risk of metal component corrosion and electrical short circuits, and ensures the long-term operational reliability of the drainage system under complex climate conditions.

[0081] The above is only a preferred embodiment of the application, and any changes and modifications made within the scope of the application should be included in the scope of the application.

Claims

1. A method for implementing multi-stage drainage of a photovoltaic support, characterized in that, The method comprises the following steps: Step S1, arranging a slope beam with a Chinese character-shaped section along the longitudinal direction of the roof as a first-level water collection channel, and opening holes in the beam bottom at both ends of the slope beam to connect the drain pipe; Step S2, transversely installing a Chinese character-shaped groove strip in the long side direction of the photovoltaic module as a second-level water guide channel, and ensuring that the water flow can be longitudinally collected into the slope beam through the water outlet at the intersection of the Chinese character-shaped groove strip and the slope beam, and a guide mechanism for realizing the inclination of the Chinese character-shaped groove strip is arranged on the side surface of the slope beam; Step S3, a plurality of shunt pieces for realizing the water flow guide and shunt are arranged at equal intervals on the Chinese character-shaped groove strip, so that the water flow guide effect can be realized; Step S4, the photovoltaic module is transversely arranged and fixed on the Chinese character-shaped groove strip with a gap of 3 mm; the gap serves as a water inlet gap, so that the surface rainwater can flow into the lower groove strip, and an auxiliary water groove is arranged between the photovoltaic modules as a third-level water guide channel; The auxiliary water groove is connected with the Chinese character-shaped groove strip to collect the rainwater at the edge of the module and guide it to the slope beam; Step S5, the collected rainwater is guided out to the building drainage system through the slope beam.

2. The method of claim 1, wherein: A plurality of mounting holes are arranged at equal intervals on the Chinese character-shaped groove strip, and the photovoltaic module is bolted and fixed around the Chinese character-shaped groove strip.

3. The method of claim 1, wherein: The guide mechanism comprises a first support block, a plurality of first support blocks are arranged at equal intervals on the front surface of the slope beam at the front end, an L-shaped support block is arranged on the upper surface of the first support block at the leftmost end, a first motor is arranged on the L-shaped support block, a worm is connected to the output end of the first motor, a rotating shaft is arranged on the L-shaped support block and extends to the first support block at the rightmost end and is connected through a bearing seat, a worm wheel engaged with the worm is arranged on the left end of the rotating shaft, a guide rail is arranged on the left side surface of the Chinese character-shaped groove strip at the front end, a sliding block is arranged in the guide rail, a connecting rod is rotatably connected to the sliding block, the connecting rod is sleeved on the rotating shaft at the end, a plurality of second support blocks corresponding to the first support blocks are arranged at equal intervals on the rear surface of the slope beam at the rear end, a fixing block is arranged on the upper surface of each second support block at the left and right ends, and the fixing blocks at the left and right ends are rotatably connected to the rear end of the Chinese character-shaped groove strip through a rotating shaft.

4. The method of claim 1, wherein: The shunt piece comprises a connecting block, a plurality of connecting blocks are arranged at equal intervals on the Chinese character-shaped groove strip, a second motor is arranged on the upper surface of the connecting block, a shunt block matched with the Chinese character-shaped groove strip is arranged at the end of the output shaft of the second motor, and the shunt block is arranged in the Chinese character-shaped groove strip.

5. The method of claim 4, wherein: A sealing rubber strip is arranged at the end of the shunt block.

6. The method of claim 1, wherein: Corresponding water outlets are arranged in the Chinese character-shaped groove strip at the front and rear ends, and a downward inclined flow guide plate is arranged in the water outlet.

7. The method of claim 1, wherein: Weatherproof sealing glue is used for waterproof treatment at the joint of all groove strips, the gap between modules and the connecting points; double sealing is adopted at the interface of the slope beam to ensure the overall waterproof reliability of the system.

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