A building curtain wall structure for solar photovoltaic power generation

Abstract

The application provides a building curtain wall structure for solar photovoltaic power generation, and relates to the technical field of building curtain walls.A plurality of installation areas are formed on a frame at equal intervals in a first direction and a second direction, the first direction is a horizontal direction and is perpendicular to the second direction, the installation areas are used for installing photovoltaic glass, the frame is provided with a cleaning pipe with an axis parallel to the first direction, the cleaning pipe contains cleaning liquid and is movable along the second direction, a plurality of spray holes are formed in the pipe wall of the cleaning pipe, the surface of the photovoltaic glass is cleaned when the cleaning liquid is sprayed from the spray holes, and the outer wall of the cleaning pipe contacts and wipes the surface of the photovoltaic glass when the spray holes stop spraying the cleaning liquid.Combining the two cleaning methods of spraying and wiping, the surface of the photovoltaic glass is conveniently cleaned and maintained on a daily basis, the problem of a decrease in light transmittance caused by surface dust accumulation is alleviated, a high power generation power is ensured, the hot spot effect caused by long-term dust accumulation is avoided, and the service life of the component and the safety of the system are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building curtain wall, in particular to a building curtain wall structure for solar photovoltaic power generation. BACKGROUND

[0002] The photovoltaic unit integrated glass curtain wall is a kind of building structure that integrates the solar power generation system and the building outer envelope curtain wall. It usually integrates photovoltaic components (such as crystalline silicon or thin film cells) between double-layer glass to form a photovoltaic glass substrate with power generation function, and embeds the substrate as a basic unit of curtain wall in the curtain wall support system, thereby realizing the integration of power generation function and building envelope structure, and significantly improving the low-carbon environmental protection performance of the building. The photovoltaic glass curtain wall facade in high-rise buildings is mainly installed by fixed frames. A plurality of longitudinal beams and transverse beams are installed at equal intervals on the building outer wall to build a plurality of independent installation areas. Then, the photovoltaic glass is embedded in the matching frame, and the photovoltaic glass with the frame is placed in the installation area and mechanically anchored by bolt connection.

[0003] The existing photovoltaic curtain wall is difficult to realize convenient daily cleaning and maintenance due to installation location restrictions. The continuous accumulation of dust on the surface will cause the light transmittance to decrease, thereby causing the power generation power to attenuate. Long-term dust accumulation may also cause hot spot effect, affecting the service life of the components and the safety of the system.

[0004] The information disclosed in the background section of the present application is only intended to deepen the understanding of the general background of the present application, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. SUMMARY

[0005] Therefore, it is necessary to provide a building curtain wall structure for solar photovoltaic power generation in view of the problems existing in the current photovoltaic curtain wall.

[0006] The above-mentioned purpose is realized by the following technical scheme:

[0007] The utility model provides a kind of building curtain wall structure for solar photovoltaic power generation, including frame, multiple installation areas are formed with equal interval on the frame along first direction and second direction, the first direction is horizontal direction and is perpendicular to the second direction, the installation area is used to install photovoltaic glass, the plane where the first direction and the second direction are located is parallel to the plane where the photovoltaic glass is located, the frame is equipped with cleaning pipe, the axis of the cleaning pipe is parallel to the first direction, the cleaning pipe contains cleaning liquid and can move along the second direction, multiple spray holes are equipped on the pipe wall of the cleaning pipe and are spaced apart along the first direction, the cleaning pipe can be switched between first state and second state, when being in the first state, the spray hole sprays cleaning liquid, to clean the surface of the photovoltaic glass, when being in the second state, the spray hole stops spraying cleaning liquid, the outer wall of the cleaning pipe contacts and wipes the surface of the photovoltaic glass.

[0008] Further, the cleaning pipe is made of elastic material, the frame is equipped with pull block that can slide along the second direction, the pull block is spaced apart multiple along the first direction, and the pull block is located between adjacent two photovoltaic glasses, the pull block is equipped with through hole for the cleaning pipe to pass through;When the cleaning pipe is in the first state, the pull block and the through hole make the cleaning pipe located at the pull block bend towards the photovoltaic glass, and the outer wall of the cleaning pipe located between adjacent two pull blocks is spaced apart from the surface of the photovoltaic glass;When the cleaning pipe is switched from the first state to the second state, the two ends of the cleaning pipe are away from each other along the first direction to stretch, the outer wall of the cleaning pipe located between adjacent two pull blocks gradually approaches the surface of the photovoltaic glass, and the cleaning pipe located at the pull block gradually switches from bending to parallel to the first direction.

[0009] Further, the frame is equipped with liquid supply pipe for transporting cleaning liquid on both sides of the first direction, the liquid supply pipe is connected with the end of the cleaning pipe and is equipped with moving part at the connection, the moving part can move along the first direction and the second direction, and when the moving part moves along the first direction, the moving part pulls the end of the cleaning pipe, so that the two ends of the cleaning pipe are away from each other along the first direction to stretch.

[0010] Further, a ring groove is formed on the frame, the plane of the ring groove is parallel to the first direction and the second direction, the moving piece moves along the ring groove in a preset direction, the ring groove comprises a first section and a second section which are parallel to the second direction, the distance between the first section and the cleaning pipe is smaller than the distance between the second section and the cleaning pipe, the ring groove further comprises a transition section for corresponding communication between the end of the first section and the end of the second section; when the moving piece is in the first section, the cleaning pipe is in the first state, and when the moving piece is in the second section, the cleaning pipe is in the second state.

[0011] Further, the depth of the first section and the depth of the second section change in the second direction.

[0012] Further, a guide pin is arranged on the moving piece, the guide pin moves along the ring groove, and an anti-disengagement structure is arranged between the moving piece and the frame, the anti-disengagement structure is used to keep the end of the guide pin in the ring groove.

[0013] Further, the anti-disengagement structure comprises a compression spring and a top pin, a sliding hole is formed on the moving piece parallel to the guide pin, one end of the top pin extends into the sliding hole, the compression spring is arranged between the top pin and the moving piece, and the other end of the top pin abuts against the frame.

[0014] Further, the frame is provided with a winding roller capable of bidirectional rotation at both ends in the second direction, a pull rope is wound on the winding roller, the free end of the pull rope is connected with the moving piece to pull the moving piece to move in the second direction, and when the moving piece moves a preset distance in the second direction, the winding roller changes direction, and the moving piece moves reversely in the second direction.

[0015] Further, a plurality of cleaning pipes are arranged at equal intervals in the second direction, and when the cleaning pipe is in the first state, the cleaning pipe is located between two adjacent photovoltaic glasses in the second direction.

[0016] Further, the axis of the spray hole coincides with the radial direction of the cleaning pipe and is arranged at an angle with the surface of the photovoltaic glass, the spray hole is located below a first plane and faces the surface of the photovoltaic glass, and the first plane is a horizontal plane passing through the axis of the cleaning pipe.

[0017] The present application has at least the following beneficial effects:

[0018] (1) When the spray hole sprays the cleaning liquid, the photovoltaic glass surface can be cleaned, and when the spray hole stops spraying the cleaning liquid, the outer wall of the cleaning pipe contacts and wipes the photovoltaic glass surface, so as to combine the spraying and wiping cleaning methods, facilitate the daily cleaning and maintenance of the photovoltaic glass surface, alleviate the problem of light transmittance reduction caused by surface dust accumulation, ensure high power generation power, thereby avoiding the hot spot effect caused by long-term dust accumulation, and ensuring the component life and system safety.

[0019] (2) When the moving part moves along the first section or the second section, it drives the cleaning pipe as a whole to move relative to the photovoltaic glass in the second direction to spray or wipe the photovoltaic glass surface, and the first section and the second section with different depths can make the moving part reciprocate in the depth direction, so as to apply a small force to the end of the cleaning pipe in the depth direction, thereby enabling the cleaning pipe to be stretched or contracted in a small amplitude reciprocating or relaxation process, and realizing more uniform spraying or wiping cleaning of the photovoltaic glass surface, and improving the cleaning effect.

[0020] (3) When not cleaning, the cleaning pipe is located between two adjacent photovoltaic glasses in the second direction to block and store dust, avoid dust directly falling on the photovoltaic glass, and reduce the cleaning burden of the cleaning pipe. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure schematic view of the building curtain wall structure for solar photovoltaic power generation provided by the present application is shown in the figure.

[0022] Figure 2 The front view of the building curtain wall structure for solar photovoltaic power generation provided by the present application is shown in the figure. Figure 1

[0023] The sectional view of the building curtain wall structure for solar photovoltaic power generation provided by the present application is shown in the figure. Figure 3 Figure 2 The partial enlarged view of the building curtain wall structure for solar photovoltaic power generation provided by the present application is shown in the figure.

[0024] Figure 4 Figure 3 The partial enlarged view of the building curtain wall structure for solar photovoltaic power generation provided by the present application is shown in the figure.

[0025] Figure 5 The partial enlarged view of the building curtain wall structure for solar photovoltaic power generation provided by the present application is shown in the figure. Figure 3

[0026] The exploded view of the building curtain wall structure for solar photovoltaic power generation provided by the present application is shown in the figure. Figure 6 Figure 1 The schematic view of the local structure of the building curtain wall structure for solar photovoltaic power generation provided by the present application is shown in the figure.

[0027] Figure 7 Figure 6 The schematic view of the local structure of the building curtain wall structure for solar photovoltaic power generation provided by the present application is shown in the figure.

[0028] Figure 8 The structure schematic view of the ring groove in the first embodiment of the present application is shown in the figure.

[0029] Figure 9 ​​​​Structure schematic diagram of the cleaning pipe and the liquid supply pipe;

[0030] Figure 10 Structure schematic diagram of the ring groove in the second embodiment of the present application.

[0031] Wherein:

[0032] 100, frame; 101, photovoltaic glass; 102, longitudinal beam; 103, cross beam; 104, fixing frame;

[0033] 201, cleaning pipe; 202, spray hole; 203, pull block; 204, liquid supply pipe; 205, moving piece; 206, ring groove; 207, first section; 208, second section; 209, transition section; 210, side frame; 211, guide pin; 212, compression spring; 213, ejector pin; 214, winding roller; 215, pull rope; 216, motor. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below by embodiments, and combined with the drawings. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0035] The serial numbers of components in this paper, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any order or technical meaning. And the "connection" and "coupling" in the present application, unless otherwise specified, include direct and indirect connection (coupling). In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] In the present application, unless otherwise expressly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] Embodiment one

[0038] As shown in Figures 1 to 9 , the embodiment of the present application provides a building curtain wall structure for solar photovoltaic power generation, which comprises a frame 100, a plurality of installation areas are formed on the frame 100 at equal intervals along a first direction and a second direction, the first direction is a horizontal direction and is perpendicular to the second direction, the installation areas are used for installing photovoltaic glass 101, the frame 100 is provided with a cleaning pipe 201 with an axis parallel to the first direction, the cleaning pipe 201 contains cleaning liquid and is capable of moving along the second direction, a plurality of spray holes 202 are formed on the pipe wall of the cleaning pipe 201 at intervals along the first direction, the cleaning pipe 201 is capable of switching between a first state and a second state, when in the first state, the spray holes 202 spray the cleaning liquid to clean the surface of the photovoltaic glass 101, when in the second state, the spray holes 202 stop spraying the cleaning liquid, and the outer wall of the cleaning pipe 201 contacts and wipes the surface of the photovoltaic glass 101.

[0039] When the spray holes 202 spray the cleaning liquid, the surface of the photovoltaic glass 101 can be cleaned, when the spray holes 202 stop spraying the cleaning liquid, the outer wall of the cleaning pipe 201 contacts and wipes the surface of the photovoltaic glass 101, so as to combine the two cleaning methods of spraying and wiping, facilitate the daily cleaning and maintenance of the surface of the photovoltaic glass 101, alleviate the problem of light transmittance reduction caused by surface dust accumulation, ensure high power generation power, thereby avoiding the hot spot effect caused by long-term dust accumulation, and ensure the service life of the component and the safety of the system.

[0040] Specifically, referring to Figure 1 , the frame 100 comprises a plurality of longitudinal beams 102 arranged at equal intervals along the first direction, a plurality of transverse beams 103 arranged at equal intervals along the second direction, and the longitudinal beams 102 and the transverse beams 103 intersect each other to form a plurality of installation areas for installing the photovoltaic glass 101. The uppermost end and the lowermost end of the frame 100 are provided with fixing frames 104, which are fixed to the building body by cooperating with fasteners such as bolts. The longitudinal beams 102 and the transverse beams 103 can form cavities therein for arranging wires corresponding to the photovoltaic glass 101.

[0041] In the embodiment, referring to Figure 1 and Figure 4The cleaning tube 201 is made of elastic material, the frame 100 is provided with a pulling block 203 capable of sliding in the second direction, a plurality of pulling blocks 203 are arranged at equal intervals in the first direction, and the pulling block 203 is located between two adjacent photovoltaic glasses 101, and the pulling block 203 is provided with a through hole for the cleaning tube 201 to pass through; when the cleaning tube 201 is in the first state, the pulling block 203 and the through hole make the cleaning tube 201 located at the pulling block 203 bend towards the photovoltaic glass 101, and the outer wall of the cleaning tube 201 located between two adjacent pulling blocks 203 forms a gap with the surface of the photovoltaic glass 101; when the cleaning tube 201 is switched from the first state to the second state, the two ends of the cleaning tube 201 are stretched away from each other in the first direction, and the outer wall of the cleaning tube 201 located between two adjacent pulling blocks 203 gradually approaches and presses the surface of the photovoltaic glass 101.

[0042] The pulling block 203 and the through hole make the cleaning tube 201 located at the pulling block 203 bend towards the photovoltaic glass 101, and the outer wall of the cleaning tube 201 located between two adjacent pulling blocks 203 forms a gap with the surface of the photovoltaic glass 101, at this time the cleaning tube 201 keeps the original length; the cleaning tube 201 can make its two ends stretched away from each other in the first direction due to the bending section, and the outer wall of the cleaning tube 201 located between two adjacent pulling blocks 203 gradually approaches the surface of the photovoltaic glass 101 until it contacts and presses the surface of the photovoltaic glass 101. In addition, when the cleaning tube 201 is in the first state, the outer wall thereof forms a gap with the surface of the photovoltaic glass 101, and the cleaning liquid is sprayed to the surface of the photovoltaic glass 101 at a certain interval, thereby improving the cleaning effect.

[0043] Specifically, the longitudinal beam 102 is provided with a T-shaped slot in the second direction, and the pulling block 203 is formed with a T-shaped anti-falling block corresponding to the T-shaped slot, so that the pulling block 203 can only slide in the second direction, and the sliding connection between the pulling block 203 and the longitudinal beam 102 is avoided from being invalid through the cooperation of the T-shaped slot and the T-shaped anti-falling block. Of course, in other embodiments, the T-shaped slot and the T-shaped anti-falling block can also be replaced by a dovetail-shaped slot and a dovetail-shaped anti-falling block.

[0044] It can be understood that the cleaning tube 201 can wipe the surface of the photovoltaic glass 101 during the movement in the second direction, and can also wipe the surface of the photovoltaic glass 101 in the first direction during the stretching and contraction in the first direction. The material of the cleaning tube 201 can be TPU or silicone rubber, and the application does not limit the material of the cleaning tube 201, which can stretch and contract when subjected to external force, and can wipe and clean the surface of the photovoltaic glass 101 when in sliding contact with the photovoltaic glass 101.

[0045] It can be understood that the plurality of pull blocks 203 are arranged, so that the plurality of bending sections are formed between the cleaning tubes 201, and the bending sections and the non-bending sections are arranged alternately, the bending sections make the cleaning tubes 201 have the length allowance in the first direction, and pulling the two ends of the cleaning tubes 201 can make the cleaning tubes 201 lengthen in the first direction.

[0046] In the embodiment, referring to Figure 1 and Figure 5 , the frame 100 is provided with the liquid supply pipes 204 on both sides in the first direction for supplying the cleaning liquid, the liquid supply pipes 204 are connected with the ends of the cleaning tubes 201 and are provided with the moving members 205 at the connection positions, the moving members 205 can move in the first direction and the second direction, and when the moving members 205 move in the first direction, the moving members 205 pull the ends of the cleaning tubes 201, so that the two ends of the cleaning tubes 201 move away from each other in the first direction to stretch.

[0047] When the moving members 205 move in the first direction, the moving members 205 pull the ends of the cleaning tubes 201, so that the two ends of the cleaning tubes 201 move away from each other in the first direction to stretch, and when the moving members 205 move in the second direction, the moving members 205 drive the cleaning tubes 201 to move relative to the photovoltaic glass 101 as a whole to spray or wipe the surface of the photovoltaic glass 101. The moving members 205 can drive the cleaning tubes 201 to stretch in the first direction and move in the second direction, so that the structure is compact and reasonable.

[0048] The liquid supply pipes 204 are made of elastic material to adapt to the movement of the cleaning tubes 201 in the first direction and the second direction. One end of the liquid supply pipes 204 is closed, and the other end is open and can be connected with an external liquid supply device through a corrugated pipe, the external liquid supply device is provided with a corresponding power supply and a controller to control the start and stop, the liquid supply pressure and the liquid supply amount, and when the cleaning tubes 201 are in the first state and move in the second direction, the controller controls the spray holes 202 to spray the cleaning liquid, and when the cleaning tubes 201 are switched from the first state to the second state and move in the second direction in the reverse direction, the controller controls the spray holes 202 to stop spraying the cleaning liquid.

[0049] In the embodiment, referring to Figure 8 , the frame 100 is provided with the ring groove 206, the plane where the ring groove 206 is located is parallel to the first direction and the second direction, the moving members 205 move in the ring groove 206 in a preset direction, the ring groove 206 includes the first section 207 and the second section 208 which are parallel to the second direction, the distance between the first section 207 and the cleaning tubes 201 is smaller than the distance between the second section 208 and the cleaning tubes 201, and the ring groove 206 further includes the transition section 209 for making the ends of the first section 207 and the second section 208 correspondingly communicate; when the moving members 205 are in the first section 207, the cleaning tubes 201 are in the first state, and when the moving members 205 are in the second section 208, the cleaning tubes 201 are in the second state.

[0050] When the moving member 205 moves along the first section 207 or the second section 208, the cleaning tube 201 is driven to move as a whole relative to the photovoltaic glass 101 in the second direction, so as to spray or wipe clean the surface of the photovoltaic glass 101. When the moving member 205 moves from the first section 207 to the second section 208 through the transition section 209, the moving member 205 gradually moves away from the cleaning tube 201, so as to pull the end of the cleaning tube 201 in the first direction, and the two ends of the cleaning tube 201 are pulled away from each other in the first direction to stretch the cleaning tube 201.

[0051] Specifically, the frame 100 is provided with a side frame 210 in the shape of a C at both ends in the first direction, and the length direction of the side frame 210 is parallel to the second direction, and the ring groove 206 is arranged on the side frame 210. The ring grooves 206 on both sides in the first direction are symmetrically arranged, so that the corresponding moving member 205 and the cleaning tube 201 have the same motion state.

[0052] In other embodiments, a first component can be provided, and the moving member 205 is arranged on the first component. A first driving mechanism is arranged on the frame 100 to drive the first component to move in the second direction, and a second driving mechanism is arranged on the first component to drive the moving member 205 to move in the first direction. The first driving mechanism and the second driving mechanism can be linear driving structures, such as a screw nut structure.

[0053] In the present embodiment, the depth of the first section 207 and the depth of the second section 208 are changed in the second direction.

[0054] When the moving member 205 moves along the first section 207 or the second section 208, the cleaning tube 201 is driven to move as a whole relative to the photovoltaic glass 101 in the second direction, so as to spray or wipe clean the surface of the photovoltaic glass 101. Meanwhile, the first section 207 and the second section 208 with different depths can enable the moving member 205 to reciprocate in the depth direction, so as to apply a small force to the end of the cleaning tube 201 in the depth direction, thereby enabling the cleaning tube 201 to be stretched or contracted in a small amplitude reciprocating manner, and realizing more uniform spraying or wiping cleaning of the surface of the photovoltaic glass 101, and improving the cleaning effect. The depth direction of the first section 207 and the second section 208 is perpendicular to the planes where the first direction and the second direction are located.

[0055] In other embodiments, the depth of the first section 207 and the depth of the second section 208 can also be consistent in the second direction.

[0056] In the present embodiment, referring to Figure 5 and Figure 7The moving piece 205 is provided with a guide pin 211 which moves along the ring groove 206, and the moving piece 205 and the frame 100 are provided with an anti-disengagement structure which is used to make the end of the guide pin 211 always be located in the ring groove 206.

[0057] Specifically, the elastic structure comprises a compression spring 212 and a top pin 213, the elastic force of the compression spring 212 can be selected according to the requirement, and the compression spring 212 with a larger elastic force is preferred. The moving piece 205 is provided with a sliding hole which is parallel to the guide pin 211, and the top pin 213 is installed in the sliding hole of the moving piece 205 through the compression spring 212, one end of the top pin 213 extends into the sliding hole and moves along the sliding hole, and the other end of the top pin 213 abuts against the side frame 210.

[0058] In other embodiments, the anti-disengagement structure has the following structure: for example, the cross section of the ring groove 206 can be T-shaped, and the cross section of the end of the guide pin 211 is also T-shaped, and of course the end of the guide pin 211 is a circular truncated cone at this time, so that the end of the guide pin 211 is always located in the ring groove 206.

[0059] In the embodiment, the frame 100 is provided with two winding rollers 214 which can rotate bidirectionally at both ends in the second direction, the winding roller 214 is provided with a pull rope 215, the free end of the pull rope 215 is connected with the moving piece 205, so as to pull the moving piece 205 to move in the second direction; when the moving piece 205 moves in the second direction by a preset distance, the winding roller 214 reverses, and the moving piece 205 reverses in the second direction.

[0060] The two winding rollers 214 are controlled to reverse, so as to control the moving piece 205 to move bidirectionally in the second direction, when the moving piece 205 moves in the second direction by a preset distance, the winding roller 214 reverses, and the transition section 209 makes the moving piece 205 reverse in the second direction, so as to make the moving piece 205 move in the ring groove 206 in a preset direction.

[0061] Specifically, the frame 100 is provided with a motor 216, and is provided with a corresponding power supply and a controller, so as to control the start and stop and the operation condition, the output end of the motor 216 is fixed with the winding roller 214, the output end of the motor 216 is controlled to reverse, so as to control the winding roller 214 to reverse, thereby winding or unwinding the pull rope 215. In other embodiments, other driving modes can be used to make the moving piece 205 move along the ring groove 206, for example, the moving piece 205 is provided with a power source and a gear, the power source drives the gear to rotate, and a gear ring is arranged along the path of the ring groove 206, and the gear is engaged with the gear ring.

[0062] Referring to Figure 8, the preset direction is shown by arrow D, the first direction is left-right direction, the second direction is up-down direction, the left side is closer to the cleaning pipe 201 and is inner side, the right side is farther from the cleaning pipe 201 and is outer side, thus the inner side is the first section 207, the outer side is the second section 208, the up and down sides are transition sections 209 with opposite inclined directions, and in the second direction, the length of the first section 207 is equal to the sum of the lengths of the second section 208 and the two transition sections 209 projected in the second direction, equal to the preset distance. The depths of the track direction of the annular groove 206 are different, specifically, points a and b in the annular groove 206 are the highest points (the shallowest depth), and points c and d are the lowest points (the deepest depth), gradually decreasing from the highest points to the lowest points, wherein one group of the highest point b and the lowest point d are located on the two sides of the lower end of the first section 207 and the lower transition section 209, respectively, wherein the highest point b is located on the first section 207, and the lowest point d is located on the lower transition section 209; another group of the highest point a and the lowest point c are located on the two sides of the upper end of the first section 207 and the upper transition section 209, respectively, wherein the highest point a is located on the upper transition section 209, and the lowest point c is located on the first section 207.

[0063] In implementation, for example, both of the two winding rollers 214 rotate in the same direction, the moving part 205 is driven by the pull rope 215 to move along the first section 207 downward under the guide of the guide pin 211, when the guide pin 211 moves to the communication position of the lower end of the first section 207 and the lower transition section 209, the winding roller 214 stops rotating, because the depth gradually decreases from the highest point b to the lowest point d, and under the action of the compression spring 212, the tendency (or probability) of the guide pin 211 moving to the point d is greater than that of moving to the point b, when the winding roller 214 switches to reverse rotation, the guide pin 211 moves to the point d along the lower transition section 209, then moves to the second section 208, and continues to move upward; when the guide pin 211 moves to the communication position of the upper end of the first section 207 and the upper transition section 209 along the second section 208, the winding roller 214 stops rotating, because the depth gradually decreases from the highest point a to the lowest point c, and under the action of the compression spring 212, the tendency (or probability) of the guide pin 211 moving to the point c is greater than that of moving to the point a, when the winding roller 214 switches to forward rotation, the guide pin 211 moves to the point c along the upper transition section 209, then moves to the first section 207, and continues to move downward, thus completing the cycle, so that the moving part 205 moves along the annular groove 206 in the preset direction.

[0064] In the embodiment, a plurality of cleaning pipes 201 are arranged at equal intervals in the second direction, and in the first state, the cleaning pipe 201 is located between two adjacent photovoltaic glasses 101 in the second direction.

[0065] When not cleaning, the cleaning pipe 201 is located between two adjacent photovoltaic glasses 101 in the second direction to block and store dust, so as to avoid the dust directly falling on the photovoltaic glass 101 and reduce the cleaning burden of the cleaning pipe 201.

[0066] It can be understood that each cleaning pipe 201 is configured with corresponding ring groove 206 and moving piece 205 and the like. The upper end of the pull rope 215 is connected with the uppermost moving piece 205, and the lower end of the pull rope 215 is connected with the lowermost moving piece 205.

[0067] In the embodiment, referring to Figure 9 , the axis of the spray hole 202 coincides with the radial direction of the cleaning pipe 201 and is arranged at an angle with the surface of the photovoltaic glass 101. The spray hole 202 is located below the first plane and faces the surface of the photovoltaic glass 101. The first plane is a horizontal plane passing through the axis of the cleaning pipe 201. The dust flows along the surface of the photovoltaic glass 101 under the action of gravity of the cleaning liquid, so as to improve the cleaning effect.

[0068] Embodiment two

[0069] In the embodiment, referring to Figure 10 , the difference between the embodiment and the embodiment one is that the lengths of the first section 207 and the second section 208 in the second direction are consistent, and the bending transition sections 209 are arranged on the upper side and the lower side. The upper transition section 209 protrudes upward, and the two ends thereof are respectively communicated with the upper end of the first section 207 and the second section 208. The lower transition section 209 protrudes downward, and the two ends thereof are respectively communicated with the lower end of the first section 207 and the second section 208. In other words, the ring groove 206 in the embodiment is in a hexagonal structure. One group of the highest point b' and the lowest point d' are respectively located on the two sides of the bending position of the lower transition section 209. The highest point b' is located near the first section 207 of the lower transition section 209, and the lowest point c' is located near the second section 208 of the lower transition section 209. Another group of the highest point a' and the lowest point c' are respectively located on the two sides of the bending position of the upper transition section 209. The highest point a' is located near the second section 208 of the upper transition section 209, and the lowest point c' is located near the first section 207 of the upper transition section 209.

[0070] In implementation, for example, the upper and lower winding rollers 214 are both rotating forward, the moving piece 205 is driven by the pull rope 215 to move downward along the first section 207 with the guide pin 211, when the guide pin 211 moves to the bending position of the lower transition section 209, the winding roller 214 stops rotating, since it gradually declines from the highest point b' to the lowest point d', and under the action of the compression spring 212, the tendency (or probability) of the guide pin 211 moving to the d' point is greater than that of moving to the b' point, when the winding roller 214 switches to reverse rotation, the guide pin 211 moves to the d' point along the lower transition section 209, then moves to the second section 208, and continues to move upward; when the guide pin 211 moves to the bending position of the upper transition section 209, the winding roller 214 stops rotating, since it gradually declines from the highest point a' to the lowest point c', and under the action of the compression spring 212, the tendency (or probability) of the guide pin 211 moving to the c' point is greater than that of moving to the a' point, when the winding roller 214 switches to forward rotation, the guide pin 211 moves to the c' point along the upper transition section 209, then moves to the first section 207, and continues to move downward, thus completing the cycle, so that the moving piece 205 moves in the preset direction along the ring groove 206.

[0071] The working process of the present application is as follows:

[0072] The frame 100 is installed on the building body through the fixing frame 104, and the photovoltaic glass 101 is installed in the installation area. When it is necessary to clean the surface of the photovoltaic glass 101, the motor 216 is started, the output end of the motor 216 drives the winding roller 214 to rotate bidirectionally to wind or unwind the pull rope 215, so as to drive the moving piece 205 to move in the preset direction along the ring groove 206 with the guide pin 211, so as to drive the cleaning pipe 201 to clean the photovoltaic glass 101, and the combination of spraying and wiping cleaning methods facilitates daily cleaning and maintenance of the surface of the photovoltaic glass 101, alleviates the problem of light transmittance reduction caused by surface dust accumulation, ensures high power generation power, thereby avoiding hot spot effect caused by long-term dust accumulation, and ensuring component life and system safety.

[0073] Specifically, taking the first embodiment as an example, when the guide pin 211 moves along the first section 207 from top to bottom, the cleaning tube 201 keeps the original length, the pull block 203 and the through hole make the cleaning tube 201 at the pull block 203 bend towards the photovoltaic glass 101, and the outer wall of the cleaning tube 201 between two adjacent pull blocks 203 forms a gap with the surface of the photovoltaic glass 101, so that the cleaning liquid is sprayed to the surface of the photovoltaic glass 101 at a certain interval to clean. When the guide pin 211 moves to the lower transition section 209, i.e. moves a preset distance, the winding roller 214 stops rotating, because it gradually descends from the highest point b to the lowest point d, and under the action of the compression spring 212, the guide pin 211 has a greater tendency (or probability) to move to the point d than to the point b, when the winding roller 214 switches to reverse rotation, the guide pin 211 moves to the point d through the lower transition section 209, then moves to the second section 208, and continues to move upwards.

[0074] In the process that the guide pin 211 moves to the point d through the lower transition section 209 and moves to the second section 208, the moving piece 205 pulls the end of the cleaning tube 201, so that the two ends of the cleaning tube 201 stretch away from each other in the first direction, the outer wall of the cleaning tube 201 between two adjacent pull blocks 203 gradually approaches the surface of the photovoltaic glass 101, until it contacts and presses the surface of the photovoltaic glass 101, and the spray hole 202 stops spraying the cleaning liquid. In the process that the guide pin 211 moves along the second section 208 from bottom to top, the cleaning tube 201 contacts and wipes the surface of the photovoltaic glass 101. When the guide pin 211 moves to the upper transition section 209 along the second section 208, i.e. moves a preset distance, the winding roller 214 stops rotating, because it gradually descends from the highest point a to the lowest point c, and under the action of the compression spring 212, the guide pin 211 has a greater tendency (or probability) to move to the point c than to the point a, when the winding roller 214 switches to forward rotation, the guide pin 211 moves to the point c along the upper transition section 209, then moves to the first section 207, and continues to move downwards, so as to complete the cycle, so that the moving piece 205 moves along the ring groove 206 in the preset direction, thereby driving the cleaning tube 201 to perform the combined cleaning process of spraying and wiping on the photovoltaic glass 101.

[0075] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0076] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A building curtain wall structure for solar photovoltaic power generation, characterized by, The frame is provided with a cleaning tube with an axis parallel to the first direction, the cleaning tube contains cleaning liquid and is movable along the second direction, the pipe wall of the cleaning tube is provided with a plurality of spray holes spaced apart along the first direction, the cleaning tube can be switched between a first state and a second state, in the first state, the spray holes spray cleaning liquid to clean the surface of the photovoltaic glass, in the second state, the spray holes stop spraying cleaning liquid, the outer wall of the cleaning tube contacts and wipes the surface of the photovoltaic glass; The cleaning tube is made of elastic material, the frame is provided with a pull block that can slide along the second direction, the pull block is provided with a plurality of pull blocks spaced apart along the first direction, and the pull block is located between two adjacent photovoltaic glasses, the pull block is provided with a through hole for the cleaning tube to pass through; when the cleaning tube is in the first state, the pull block and the through hole make the cleaning tube located at the pull block bend towards the photovoltaic glass, and the outer wall of the cleaning tube located between two adjacent pull blocks is spaced apart from the surface of the photovoltaic glass; when the cleaning tube is switched from the first state to the second state, the two ends of the cleaning tube are stretched away from each other along the first direction, the outer wall of the cleaning tube located between two adjacent pull blocks gradually approaches the surface of the photovoltaic glass, and the cleaning tube located at the pull block gradually switches from bending to being parallel to the first direction; The frame is provided with a liquid supply pipe on both sides of the first direction for transporting cleaning liquid, the liquid supply pipe is connected with the end of the cleaning tube and is provided with a moving part at the connection, the moving part can move along the first direction and the second direction, and when the moving part moves along the first direction, the moving part pulls the end of the cleaning tube, so that the two ends of the cleaning tube are stretched away from each other along the first direction; The frame is provided with a ring groove, the plane of the ring groove is parallel to the first direction and the second direction, the moving part moves along the ring groove in a predetermined direction, the ring groove includes a first section and a second section parallel to the second direction, the distance between the first section and the cleaning tube is less than the distance between the second section and the cleaning tube, and the ring groove further includes a transition section for connecting the ends of the first section and the second section; when the moving part is in the first section, the cleaning tube is in the first state, and when the moving part is in the second section, the cleaning tube is in the second state.

2. The building curtain wall structure for solar photovoltaic power generation according to claim 1, characterized in that, The depth of the first section and the depth of the second section change in the second direction. 3.The building curtain wall structure for solar photovoltaic power generation of claim 1, wherein, The moving piece is provided with a guide pin which moves along the annular groove, and a anti-disengagement structure is arranged between the moving piece and the frame, which is used to keep the end of the guide pin in the annular groove.

4. The building curtain wall structure for solar photovoltaic power generation according to claim 3, characterized in that, The anti-disengagement structure comprises a compression spring and a top pin, a sliding hole is arranged on the moving piece in parallel to the guide pin, one end of the top pin extends into the sliding hole, the compression spring is arranged between the top pin and the moving piece, and the other end of the top pin abuts against the frame. 5.The building curtain wall structure for solar photovoltaic power generation of claim 2, wherein, Both ends of the frame in the second direction are provided with winding rollers which can rotate in two directions, the winding rollers are provided with pull ropes, and the free ends of the pull ropes are connected with the moving piece to pull the moving piece to move in the second direction; when the moving piece moves a preset distance in the second direction, the winding rollers change direction, and the moving piece moves reversely in the second direction.

6. The building curtain wall structure for solar photovoltaic power generation according to claim 5, characterized in that, A plurality of cleaning tubes are arranged at equal intervals in the second direction, and in the first state, the cleaning tubes are located between two adjacent photovoltaic glasses in the second direction.

7. The building curtain wall structure for solar photovoltaic power generation according to any one of claims 1 to 6, characterized in that, The axis of the spray hole coincides with the radial direction of the cleaning tube and is arranged at an angle with the surface of the photovoltaic glass, the spray hole is located below a first plane and faces the surface of the photovoltaic glass, and the first plane is a horizontal plane passing through the axis of the cleaning tube.

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