Photovoltaic support and photovoltaic system for desert environment
Patent Information
- Application Number
- CN202520027292.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-06
AI Technical Summary
Desert photovoltaic power plants face wind and sand problems, including wind erosion pits under the photovoltaic panels and sand ridges in front of the panels, which leads to decreased foundation instability and increased operation and maintenance costs.
A perforated windbreak is used, which is set on the side of the photovoltaic support facing away from the mounting platform. It has multiple ventilation holes and can be adjusted in angle. By attenuating the kinetic energy of the airflow, it changes the airflow trajectory and reduces the airflow's ability to carry sand and dust and its redistribution capacity.
It effectively prevents the formation of wind erosion pits and sand dunes, improves the power generation efficiency of photovoltaic panels, extends the structural life, reduces operation and maintenance costs, and adapts to severe wind and sand environments.
Smart Images
Figure CN223713903U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a photovoltaic support and photovoltaic system for desert environment belong to solar power generation and desert photovoltaic power station wind sand prevention and treatment technical field. BACKGROUND
[0002] To cope with global climate change, China clearly proposed the "double carbon" goal of "carbon peak" and "carbon neutralization" in September 2020. This goal promotes the adjustment of China's industrial and energy structure and promotes the vigorous development of renewable energy. As a clean and renewable energy source, solar energy has a wide application prospect and great development potential. The desert, gobi and desert areas in northwest China are rich in sunshine and solar energy resources. Combined with the continuous innovation of photovoltaic technology and the reduction of photovoltaic cost under policy support, the scale of photovoltaic projects in these areas is expanding, and the number and capacity of construction are increasing year by year. In 2023, China accounted for more than 50% of the global increase in photovoltaic installed capacity, indicating that the planning and construction of large-scale photovoltaic bases in desert, gobi and desert areas and other solar energy industries are booming. Therefore, the development of photovoltaic projects in these areas plays an important role in global energy transformation, sustainable energy development, climate change response and economic growth.
[0003] However, due to the many wind and sand hazards in desert areas, there are many wind and sand problems in desert photovoltaic power stations, such as erosion under the panel, accumulation in front of the panel, dust on the panel, and strong winds that can cause photovoltaic structure instability. Especially after constructing photovoltaic projects on large-scale mobile dune surfaces, the photovoltaic panel array changes the surface roughness, affecting the wind and sand flow structure of the near-surface. When the airflow flows through the photovoltaic array, the upper airflow converges due to the convergence of the inclined panel surface, causing a "narrow tube" effect, increasing the wind speed under the photovoltaic panel, accelerating the erosion of the mobile sand surface, and forming wind erosion pits under the panel and sand ridges between the photovoltaic array. This erosion and accumulation effect on the one hand causes the photovoltaic foundation to be exposed, reducing stability; on the other hand, the sand ridges accumulated in front of the panel hinder the photovoltaic cleaning channel, and manual cleaning and removal of the accumulated sand ridges greatly increase the later operation and maintenance cost. UTILITY MODEL CONTENTS
[0004] The main purpose of the utility model is to provide a photovoltaic support and photovoltaic system for desert environment, thereby overcoming the deficiencies in the prior art.
[0005] To achieve the foregoing utility model purposes, the utility model adopts the technical scheme comprising:
[0006] The first aspect of the embodiment of the utility model provides a photovoltaic support for desert environment, include: support frame, the support frame has the installation platform for installing photovoltaic board, and, at least one porous wind barrier plate, the porous wind barrier plate sets up on the photovoltaic support and is located the side of facing away the installation platform, the porous wind barrier plate has a plurality of wind holes, the wind hole is along the thickness direction of the porous wind barrier plate and penetrates the porous wind barrier plate.
[0007] The second aspect of the embodiment of the utility model provides a photovoltaic system for desert environment, include: photovoltaic board and the photovoltaic support for desert environment, the photovoltaic board is fixed on the installation platform of support frame.
[0008] Compared with prior art, the utility model has the advantages of:
[0009] The photovoltaic system for desert environment provided by the embodiment of the utility model solves the wind erosion problem from the source by simply setting the porous wind barrier plate, the turbulent porous wind barrier plate can attenuate the kinetic energy of the incoming flow, change the airflow motion trajectory and turbulent intensity, and eliminate the negative effects caused by the "narrow pipe" effect.
[0010] The photovoltaic system for desert environment provided by the embodiment of the utility model reduces the airflow carrying dust capacity and redistribution capacity through the interception effect of the porous wind barrier plate, and realizes the change from "prevention" to "attack".
[0011] The photovoltaic system for desert environment provided by the embodiment of the utility model has the simple structure and is easy to operate, and does not need frequent maintenance in the later period, and the simple mechanical structure can adapt to the areas with serious wind and sand hazards, so it has important significance in the fields of solar power generation and desert photovoltaic power station wind and sand prevention and control.
[0012] The photovoltaic system for desert environment provided by the embodiment of the utility model forms the turbulent structure through the arrangement of the porous wind barrier plate, alleviates the desert photovoltaic wind and sand erosion problem, prolongs the service life of the photovoltaic structure, maintains the stability of the photovoltaic foundation, improves the power generation efficiency of the photovoltaic board, and reduces the operation and maintenance cost of the power station. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.
[0014] Figure 1 It is the schematic diagram of the photovoltaic board lower wind erosion pit formation and the sand accumulation in front of the board;
[0015] Figure 2 is a side view of a photovoltaic system for a desert environment provided in a typical embodiment case of the present application;
[0016] Figure 3 is a schematic diagram of the overall structure of a photovoltaic system for a desert environment provided in a typical embodiment case of the present application;
[0017] Figure 4 is a schematic diagram of the local structure of a photovoltaic system for a desert environment provided in a typical embodiment case of the present application. DETAILED DESCRIPTION
[0018] In view of the deficiencies in the prior art, the present inventors have long studied and practiced to propose the technical solution of the present application. The technical solution, its implementation process and principles will be further explained as follows.
[0019] The first aspect of the embodiment of the present application provides a photovoltaic support for a desert environment, comprising: a support frame, the support frame having a mounting table for mounting a photovoltaic panel, and at least one porous wind barrier plate, the porous wind barrier plate being arranged on the photovoltaic support and located on the side opposite to the mounting table, the porous wind barrier plate having a plurality of wind-permeable holes, the wind-permeable holes penetrating through the porous wind barrier plate along the thickness direction of the porous wind barrier plate.
[0020] Further, the porous wind barrier plate is movably connected with the support frame, and the included angle between the porous wind barrier plate and the mounting table can be adjusted.
[0021] Further, the porous wind barrier plate is rotatably connected with the support frame, and the support frame is further provided with a first limiting mechanism, the first limiting mechanism having a plurality of first functional structures, the porous wind barrier plate is further provided with a second limiting mechanism fixedly arranged thereon, the second limiting mechanism having a second functional structure, the second functional structure being separably connected with any one of the first functional structures.
[0022] When the second functional structure is connected with a selected first functional structure, the angle of the included angle between the porous wind barrier plate and the mounting table is fixed, and when the second functional structure is connected with a different first functional structure, the angle of the included angle between the porous wind barrier plate and the mounting table is different.
[0023] Further, the first functional structure and the second functional structure are at least one of a buckle connection structure, a magnetic adsorption structure, a negative pressure adsorption structure, a threaded connection structure, and a mortise and tenon structure.
[0024] In one specific embodiment, the first functional structure is a card slot, and the second functional structure is a card head.
[0025] Further, the porous wind barrier plate is rotationally connected with the support frame, and the support frame is further connected with the porous wind barrier plate through a third limiting mechanism, the third limiting mechanism is telescopic, and an included angle between the porous wind barrier plate and the mounting table changes with a length of the third limiting mechanism.
[0026] Further, the photovoltaic support comprises a plurality of the porous wind barrier plates, the plurality of the porous wind barrier plates are combined into a plurality of porous wind barrier plate groups, the plurality of the porous wind barrier plate groups are sequentially and spacedly arranged along a first direction, each of the porous wind barrier plate groups comprises at least one porous wind barrier plate, and a plate surface of the porous wind barrier plate is arranged transversely to the first direction.
[0027] Further, each of the porous wind barrier plate groups comprises a plurality of porous wind barrier plates, the plurality of porous wind barrier plates comprised by the porous wind barrier plate group are sequentially arranged along a second direction, and a plate surface of the porous wind barrier plate is parallel to the second direction.
[0028] Further, the plurality of air-permeable holes on the porous wind barrier plate are arranged in an array.
[0029] Further, the air-permeable holes in the same row of the plurality of the air-permeable holes have the same hole diameter, and the air-permeable holes in different rows have different hole diameters.
[0030] Further, the hole diameters of the plurality of the air-permeable holes are gradually changed along a column direction.
[0031] Further, the distribution structures of the air-permeable holes of the plurality of the porous wind barrier plates comprised by the same porous wind barrier plate group are the same, and the distribution structures of the air-permeable holes of the porous wind barrier plates comprised by adjacent two porous wind barrier plate groups are opposite.
[0032] Further, the row direction of the plurality of the air-permeable holes is parallel to the second direction.
[0033] Further, the mounting table is inclined.
[0034] Further, the mounting table is inclined along the first direction.
[0035] The second aspect of the embodiment of the utility model provides a photovoltaic system for desert environment, include: photovoltaic board and the photovoltaic support for desert environment, the photovoltaic board is fixed on the mounting table of the support frame.
[0036] The technical scheme, its implementation process and principles will be further explained and described as follows by combining with the drawings and specific implementation cases.
[0037] Embodiment
[0038] A photovoltaic system for desert environment, comprising a photovoltaic support and a photovoltaic panel, the photovoltaic support comprises a support frame, the support frame has a mounting table for mounting the photovoltaic panel, the photovoltaic panel is fixedly mounted on the mounting table of the support frame, and the support frame can be fixed on the ground or the like foundation.
[0039] Referring to Figure 1 , the photovoltaic panel 1 fixed on the photovoltaic support is inclined, generally inclined downward along the main wind direction. When the airflow flows through the photovoltaic panel 1, part of the main wind direction airflow 14 bypasses the top of the photovoltaic panel 1, and part of the airflow 1401 converges downward of the photovoltaic panel 1. Due to the inclined structure of the photovoltaic panel 1 and the lower position of the front edge, the outlet cross section is reduced, and the airflow is accelerated due to the "narrow tube" effect. Therefore, the wind erosion pit 15 is formed below the photovoltaic panel 1, and the sand accumulation 1501 is formed by moving the eroded sand particles in front of the panel.
[0040] Referring to Figure 2 , Figure 3 and Figure 4 , in order to reduce / avoid wind erosion, the utility model is arranged with a plurality of porous windbreak plates 9 on the side of the support frame opposite to the mounting table / photovoltaic panel. The porous windbreak plate 9 can attenuate the kinetic energy of the incoming airflow, and at the same time, reduce the sand-carrying capacity, carrying capacity and redistribution capacity of the airflow through interception. Specifically, the porous windbreak plate 9 has a plurality of air-permeable holes penetrating in the thickness direction, and the porous windbreak 9 is rotatably connected with the support frame, and the included angle between the porous windbreak plate 9 and the mounting table can be adjusted.
[0041] In this embodiment, the support frame comprises a transverse support 2 extending in a second direction, a longitudinal support 3 extending in a first direction, a first fixed frame 11 and a second fixed frame 13 extending in a third direction, the transverse support 2 and the longitudinal support 3 are cross arranged and fixedly connected to form a mounting table, the first fixed frame 11 and the second fixed frame 13 are arranged in the first direction, the first fixed frame 11, the second fixed frame 13 are fixedly connected with the transverse support 2 and / or the longitudinal support 3, and the photovoltaic foundation 12 is fixed to the bottom of the first fixed frame 11 and the second fixed frame 13.
[0042] It should be noted that the specific structure of the transverse support 2, the longitudinal support 3, the first fixing frame 11 and the second fixing frame 13 is not limited here, and the first fixing frame 11 and the second fixing frame 13 can include one or more columns and the like, which are mainly used for supporting the mounting table and being fixed to the ground or other base. In order to improve the overall structural strength of the support frame, the support frame can further include a diagonal beam 10, which can be fixed between at least one of the first fixing frame 11 and the second fixing frame 13 and at least one of the transverse support 2 and the longitudinal support 3. The photovoltaic foundation 12 can be a concrete table / column or the like, which is mainly used to be combined with the ground or other base to improve the overall structural stability of the photovoltaic system.
[0043] In the present embodiment, the link rod 4 is fixedly arranged on the porous windbreak plate 9, the sleeve 5 is fixed on the side of the transverse support 2 and / or the longitudinal support 3 which is opposite to the photovoltaic panel 1, and the sleeve 5 is arranged in the sleeve 5 of the link rod 4. The link rod 4 and the sleeve 5 are movably connected, and the porous windbreak plate 9 can rotate around the link rod 4, so that the inclination angle of the porous windbreak plate 9 can be adjusted. It should be noted that the inclination angle of the porous windbreak plate 9 can be represented by the angle between the porous windbreak plate 9 and the horizontal plane / vertical plane / mounting table.
[0044] In the present embodiment, the inclination angle of the porous windbreak plate 9 can be controlled and adjusted. Specifically, the support frame is further provided with a first limiting mechanism 7 having a plurality of clamping grooves, and the second limiting mechanism 8 is further fixedly arranged on the porous windbreak plate 9, one end of the second limiting mechanism 8 is provided with a clamping head, and the clamping head of the second limiting mechanism 8 can be detachably inserted into any clamping groove, so that the second limiting mechanism 8 is connected with the first limiting mechanism 7. By changing the connection position of the first limiting mechanism 7 and the second limiting mechanism 8, the inclination angle of the porous windbreak plate 9 can be changed. In the present embodiment, the first limiting mechanism 7 can be a limiting plate having a plurality of clamping grooves, and the limiting plate can be fixed on the transverse support 2 or the longitudinal support 3 by a connecting member such as a bolt 6. The plurality of clamping grooves are arranged in the first direction in sequence, and the second limiting mechanism 8 can be a limiting rod or the like. Of course, the inclination angle adjustment of the porous windbreak plate 9 can also be realized by using other structures or methods as described above, which will not be described here. In actual application, the change of the inclination angle of the porous windbreak plate 9 by changing the connection position of the first limiting mechanism 7 and the second limiting mechanism 8 can adapt to different complex environments and other sand prevention, maintenance and construction operations. In the present embodiment, the angle between the porous windbreak plate 9 and the mounting table can be 0° at the minimum and less than 180° at the maximum, for example, it can be 90°.
[0045] In the embodiment, the plate surface of the porous wind barrier plate 9 is parallel to the second direction and intersects the first direction. Specifically, the plurality of air-permeable holes on the porous wind barrier plate 9 are arranged in an array, and the plurality of air-permeable holes in the same row have the same hole diameter, and the plurality of air-permeable holes in different rows have different hole diameters. Specifically, the hole diameters of the plurality of air-permeable holes gradually change along the column direction, that is, the hole diameters of the air-permeable holes in each column gradually change along the column direction. In addition, it should be noted that the row direction is parallel to the second direction.
[0046] In the embodiment, the porosity of the porous wind barrier plate 9 can be within 40%. The hole type of the air-permeable hole can be a circular hole, a square hole, a polygonal hole, or a combination thereof, and the specific structure of the porous wind barrier plate 9 can be determined according to different wind conditions of the photovoltaic power station.
[0047] In the embodiment, the material of the porous wind barrier plate can be a new type of composite rigid material with high strength and light weight, or a plastic net, a flexible material such as fiber, etc.
[0048] In the embodiment, the photovoltaic support includes a plurality of porous wind barrier plates 9, the plurality of porous wind barrier plates 9 are combined into a plurality of porous wind barrier plate groups, the plurality of porous wind barrier plate groups are sequentially and spaced apart along the first direction, and each porous wind barrier plate group includes a plurality of porous wind barrier plates sequentially arranged along the second direction. Figures 2-4 Two porous wind barrier plate groups are shown in the figure. Specifically, the distribution structure of the air-permeable holes of the plurality of porous wind barrier plates included in the same porous wind barrier plate group is the same, and the distribution structure of the air-permeable holes of the porous wind barrier plates included in the adjacent two porous wind barrier plate groups is opposite.
[0049] In the embodiment, since the mounting table is inclined along the first direction, the horizontal height of the porous wind barrier plate 9 included in the plurality of porous wind barrier plate groups also changes along the first direction.
[0050] The photovoltaic system for desert environment provided by the embodiment of the utility model can change the airflow on the upper and lower sides of the photovoltaic panel by arranging the porous wind barrier plate with air-permeable holes, and the inclination angle of the porous wind barrier plate can be changed, and the combination of multiple sets of porous wind barrier plate groups can adapt to more complex wind and sand environment. In addition, the inclination angle of the porous wind barrier plate can be adjusted to 0° in still wind, and the space below the photovoltaic panel is increased for other wind and sand prevention and maintenance operations.
[0051] The photovoltaic system for desert environment provided by the embodiment of the utility model reduces the flow velocity of airflow under the photovoltaic panel from the root, and further prevents the formation of wind erosion pits and sand accumulation in front of the panel, simultaneously, the interception of the porous wind barrier plate reduces the sand-carrying capacity, carrying capacity and redistribution capacity of the airflow, effectively prevents the diffusion and deposition of sand and dust around the photovoltaic panel, and improves the power generation efficiency.
[0052] Compared with the conventional prevention and control measures of changing the properties of the underlying surface such as laying grass checkerboard and nylon net sand barrier, and laying gravel, the photovoltaic system for desert environment provided by the embodiment of the utility model solves the problem of wind erosion from the source by simply setting the porous wind barrier plate, the porous wind barrier plate can attenuate the kinetic energy of the incoming airflow, change the airflow trajectory and turbulence intensity, and eliminate the negative effects caused by the "narrow pipe" effect, simultaneously, the interception of the porous wind barrier plate reduces the sand-carrying capacity and redistribution capacity of the airflow, realizes the change from "prevention" to "attack", in addition, the porous wind barrier plate has simple structure and is easy to operate, does not need frequent maintenance in the later period, and the simple mechanical structure can adapt to the areas with serious wind and sand hazards, and therefore, has important significance in the field of wind and sand prevention and control of solar power generation and desert photovoltaic power station.
[0053] The photovoltaic system for desert environment provided by the embodiment of the utility model forms the flow disturbance structure by arranging the porous wind barrier plate, alleviates the problem of wind and sand erosion and accumulation of the desert photovoltaic, prolongs the service life of the photovoltaic structure, maintains the stability of the photovoltaic foundation, improves the power generation efficiency of the photovoltaic panel, and reduces the operation and maintenance cost of the power station.
[0054] Although the utility model has been described with reference to the illustrative embodiments, those skilled in the art will understand that various other changes, omissions and / or additions can be made without departing from the spirit and scope of the utility model, and elements of the embodiments can be replaced with substantially equivalent elements. In addition, many modifications can be made to adapt a particular situation or material to the teachings of the utility model without departing from the scope of the utility model. Therefore, this document does not intend to limit the utility model to the disclosed specific embodiments for performing the utility model, but intends to make the utility model include all embodiments within the scope of the appended claims. In addition, unless specifically stated, any use of the terms first, second, etc. does not represent any order or importance, but the terms first, second, etc. are used to distinguish one element from another element.
[0055] It should be understood that the above embodiments are only to illustrate the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.
Claims
1. A photovoltaic support for desert environments, characterized in that, include: A support frame having a mounting platform for mounting photovoltaic panels, and at least one perforated windbreak plate disposed on the photovoltaic support frame and located on the side opposite to the mounting platform, the perforated windbreak plate having a plurality of ventilation holes penetrating the perforated windbreak plate along its thickness direction.
2. The photovoltaic racking for desert environments of claim 1, wherein: The perforated windbreak is movably connected to the support frame, and the angle between the perforated windbreak and the mounting platform is adjustable.
3. The photovoltaic racking for desert environments of claim 2, wherein: The porous windbreak is rotatably connected to the support frame, and the support frame is also provided with a first limiting mechanism, which has multiple first functional structures. The porous windbreak is also fixedly provided with a second limiting mechanism, which has a second functional structure. The second functional structure can be detachably connected to any of the first functional structures. When the second functional structure is connected to a selected first functional structure, the angle between the perforated windbreak and the mounting platform is fixed, and when the second functional structure is connected to different first functional structures, the angle between the perforated windbreak and the mounting platform is different.
4. The photovoltaic racking for desert environments of claim 3, wherein: The first functional structure and the second functional structure are at least one of the following: snap-fit connection structure, magnetic adsorption structure, negative pressure adsorption structure, threaded connection structure, and mortise and tenon structure.
5. The photovoltaic racking for desert environments of claim 3, wherein: The first functional structure is a card slot, and the second functional structure is a card head.
6. The photovoltaic racking for desert environments of claim 2, wherein: The perforated windbreak is rotatably connected to the support frame, and the support frame is also connected to the perforated windbreak via a third limiting mechanism. The third limiting mechanism itself is telescopic, and the included angle between the perforated windbreak and the mounting platform changes with the length of the third limiting mechanism itself.
7. The photovoltaic racking for desert environments according to any one of claims 1-6, characterized in that, The photovoltaic support includes a plurality of porous windbreaks, which are combined into a plurality of porous windbreak groups. The plurality of porous windbreak groups are arranged at intervals along a first direction. Each porous windbreak group includes at least one porous windbreak, and the surface of the porous windbreak is arranged to intersect with the first direction. And / or, each of the porous windbreak assembly includes a plurality of porous windbreaks, the plurality of porous windbreaks in the porous windbreak assembly being arranged sequentially along the second direction, and the surface of the porous windbreaks being parallel to the second direction.
8. The photovoltaic racking for desert environments of claim 7, wherein: The multiple ventilation holes on the porous windbreak are arranged in an array; And / or, the ventilation holes in the same row of the plurality of ventilation holes have the same diameter, and the ventilation holes in different rows have different diameters; And / or, the diameter of the plurality of ventilation holes gradually changes along the column direction; And / or, the distribution structure of the ventilation holes of the multiple porous windbreaks included in the same porous windbreak group is the same, and the distribution structure of the ventilation holes of the porous windbreaks included in two adjacent porous windbreak groups is opposite. And / or, the row direction of the plurality of ventilation holes is parallel to the second direction.
9. The photovoltaic racking for desert environments of claim 7, wherein: The mounting platform is tilted; And / or, the mounting platform is tilted along the first direction.
10. A photovoltaic system for desert environments, characterized in that, include: Photovoltaic panels and photovoltaic supports for desert environments according to any one of claims 1-9, said photovoltaic panels being fixed to the mounting table of said support.