Wind-resistant control device of photovoltaic support array

Abstract

The invention relates to a photovoltaic support array wind resistance control device, which comprises a base, a plurality of hydraulic push rods, a central support, a folding and unfolding assembly and a plurality of photovoltaic assemblies, and is characterized in that the lower ends of the plurality of hydraulic push rods are mounted on the base, and the upper ends of the plurality of hydraulic push rods are connected with the central support; the hydraulic push rods adjust the inclined state of the center support through telescopic movement of the output ends of the hydraulic push rods and deflection movement of the hydraulic push rods, and the folding and unfolding assembly is installed in the center of the center support. Through cooperative arrangement of the central support, the folding and unfolding assembly and the photovoltaic assemblies, when the photovoltaic support array encounters strong wind in the use process, the photovoltaic support array can adjust the plurality of photovoltaic assemblies from an application state in which the plurality of photovoltaic assemblies are located on the same plane to a wind-resistant state in which two adjacent photovoltaic assemblies form a group to form a convex corner. Therefore, when airflow passes through the photovoltaic support array, the wind power influence is reduced, and the stability of supporting arrangement of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaics, and in particular to a wind resistance control device for a photovoltaic support array. Background Art

[0002] As an important part of photovoltaic power stations, the stability and wind resistance of photovoltaic support arrays have an important impact on the safe operation and power generation efficiency of photovoltaic power stations. At present, with the continuous growth of global demand for renewable energy, the construction scale of photovoltaic power stations is expanding, and the wind resistance control problem of photovoltaic support arrays is becoming increasingly prominent.

[0003] Most traditional photovoltaic brackets adopt fixed structures, and their wind resistance is relatively weak. In strong wind weather, photovoltaic brackets are easily affected by wind pressure and deformed or damaged, thus affecting the normal operation of photovoltaic power stations. Although some photovoltaic brackets have adjustment functions, they usually require manual operation. When encountering sudden strong winds, it is often impossible to adjust the angle of the photovoltaic bracket in time, thus failing to effectively reduce wind resistance and reduce the impact of wind pressure on the photovoltaic bracket. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The present invention provides a wind resistance control device for a photovoltaic support array, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wind-resistant control device for a photovoltaic bracket array, comprising a base, a plurality of hydraulic push rods, a central support, a folding and unfolding assembly and a plurality of photovoltaic assemblies, the lower ends of the plurality of hydraulic push rods are mounted on the base, the upper ends of the plurality of hydraulic push rods are connected to the central support, the plurality of hydraulic push rods adjust the inclination state of the central support through the telescopic activity of their output ends and their own deflection activity, the folding and unfolding assembly is mounted at the center position of the central support, and the folding and unfolding assembly is provided with a plurality of supporting structures distributed on the outside of the central support and driven for deflection activity, the plurality of photovoltaic assemblies are distributed at intervals between the plurality of supporting structures of the folding and unfolding assembly, and each of the photovoltaic assemblies is respectively connected to two adjacent supporting structures, so that the photovoltaic assemblies adjust their position state by utilizing the activity of the supporting structures, the position states of the plurality of photovoltaic assemblies include an application state when they are all in the same plane, and a wind-resistant state in which two adjacent photovoltaic assemblies form a convex angle as a group.

[0008] Preferably, the central support includes an upper support section and a lower support section. The upper support section is formed on the top of the lower support section, and a plurality of top connection frames for cooperating and connecting with the expansion and retraction assembly are uniformly formed on the outer wall of the upper support section along its radial direction. A plurality of bottom connection frames for cooperating and connecting with the hydraulic push rods are uniformly formed on the bottom of the outer wall of the lower support section along its radial direction.

[0009] More preferably, the expansion and retraction assembly includes a linear drive source, a jacking member, a plurality of hanging frames, collars, and deflection shafts in twice the number of the hanging frames. The linear drive source is installed at the central position of the central support, and the output end of the linear drive source is connected to the jacking member. A plurality of protruding connection parts equal in number to the hanging frames are uniformly formed on the outer wall of the jacking member along its radial direction. Each of the protruding connection parts is rotatably connected to the top end of an adjacent hanging frame. The bottom end of each hanging frame is rotatably connected to a collar. One end of a plurality of deflection shafts close to the central support is rotatably connected between adjacent top connection frames. A plurality of collars are respectively sleeved on adjacent deflection shafts and are fixedly connected thereto.

[0010] More preferably, the photovoltaic module includes an outer frame, a first collar, a second collar, and a photovoltaic panel. The photovoltaic panel is fixedly installed inside the outer frame. The first collar and the second collar are respectively formed on the outer walls of opposite sides of the outer frame, and the first collar and the second collar are respectively rotatably sleeved on adjacent deflection shafts.

[0011] More preferably, the number of the photovoltaic modules is set to be an even number. A plurality of purlins are fixedly connected inside each outer frame at intervals along the length direction of the outer frame, and the plurality of purlins are used for installing, fixing, and supporting the photovoltaic panel.

[0012] More preferably, the deflection shafts constitute the support structure of the expansion and retraction assembly, and a limit baffle is formed at one end of the deflection shaft away from the central support. The first collar or the second collar sleeved on each deflection shaft is located between the collar and the limit baffle.

[0013] More preferably, the base includes a load-bearing part, a plurality of mounting brackets, and movable seats. The plurality of mounting brackets are formed on the top of the load-bearing part, and the top end of each mounting bracket is rotatably connected to a movable seat. The lower end of each hydraulic push rod is fixedly connected to a movable seat, and the upper end of each hydraulic push rod is rotatably connected to an adjacent bottom connection frame.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a wind resistance control device for a photovoltaic support array, having the following beneficial effects:

[0016] Through the coordinated arrangement of the central support, the retractable and unfolded components and the photovoltaic components, when the photovoltaic bracket array encounters strong winds during use, several photovoltaic components can be adjusted from the application state in the same plane to the wind-resistant state in which two adjacent photovoltaic components form a convex angle as a group, thereby reducing the impact of wind when the airflow passes through the photovoltaic bracket array and improving the stability of the device support setting.

[0017] In addition, through the coordinated setting of the base, hydraulic push rod and center support, when the photovoltaic bracket array encounters strong winds during use, the inclination of the center support, the retraction and expansion assembly and the entire photovoltaic assembly can be adjusted to avoid the illuminated surface or the back of the photovoltaic assembly facing the direction of the airflow, thereby reducing the force area of ​​the photovoltaic bracket array and improving the stability of the device support setting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a wind resistance control device for a photovoltaic support array according to an implementation scheme;

[0019] Figure 2 It is a schematic diagram of the coordination structure of the central support, the stowage and deployment assembly and the photovoltaic assembly according to the implementation scheme;

[0020] Figure 3 for Figure 2 A schematic diagram of the coordination structure of the central support, the retractable and unfolded assembly and the photovoltaic assembly at another angle;

[0021] Figure 4 It is a schematic diagram of the matching structure of the base, the hydraulic push rod and the center support according to the implementation scheme;

[0022] Figure 5 is a schematic structural diagram of a photovoltaic module according to an embodiment.

[0023] In the figure: 10, base; 11, load-bearing part; 12, mounting bracket; 13, movable seat; 20, hydraulic push rod; 30, central support; 31, upper section of support; 311, top connecting frame; 32, lower section of support; 321, bottom connecting frame; 40, retractable and unfolding assembly; 41, linear drive source; 42, lifting piece; 421, protruding connection part; 43, hanger; 44, deflection axis; 45, ring; 50, photovoltaic module; 51, outer frame; 52, first ring; 53, second ring; 54, photovoltaic panel. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1 A wind-resistant control device for a photovoltaic support array includes a base 10, a plurality of hydraulic push rods 20, a central support 30, a retracting and extending assembly 40, and a plurality of photovoltaic assemblies 50. During the installation and use of the photovoltaic support array, the lower ends of the plurality of hydraulic push rods 20 are installed on the base 10, and the upper ends of the plurality of hydraulic push rods 20 are connected to the central support 30, so that the plurality of hydraulic push rods 20 can adjust the tilt state of the central support 30 through the telescopic activity of their output ends and their own deflection activities. The retracting and extending assembly 40 is installed at the center position of the central support 30, and the retracting and extending assembly 40 is provided with a plurality of supporting structures distributed outside the central support 30 and can be driven to deflect. A plurality of photovoltaic assemblies 50 are distributed at intervals between the plurality of supporting structures of the retracting and extending assembly 40, and each photovoltaic assembly 50 is respectively connected to two adjacent supporting structures, so that the photovoltaic assembly 50 can adjust its own position state by utilizing the activity of the supporting structure. During the adjustment process, when the positions of the photovoltaic modules 50 are all in the same plane, the photovoltaic modules 50 can be placed in an application state to receive light; and when two adjacent photovoltaic modules 50 in the photovoltaic modules 50 are deflected as a group to form a convex angle, the photovoltaic modules 50 can be placed in a wind-resistant state. In addition, during the above adjustment process, the inclination of the central support 30 can be adjusted to adjust the orientation of the photovoltaic modules 50 when they are in the application state, so as to better receive light; and when the photovoltaic modules 50 are in the wind-resistant state, the central support 30 can be adjusted to a vertical state, so as to prevent the photovoltaic modules 50 from tilting toward the direction of the airflow.

[0026] See also Figure 4 The base 10 includes a weight-bearing portion 11, a plurality of mounting brackets 12 and a movable seat 13. The plurality of mounting brackets 12 are formed on the top of the weight-bearing portion 11, and the top of each mounting bracket 12 is rotatably connected to a movable seat 13. The lower end of each hydraulic push rod 20 is fixedly connected to a movable seat 13, so that each hydraulic push rod 20 can use the mounting bracket 12 to generate a deflection movement.

[0027] See also Figure 3The central support 30 includes a support upper section 31 and a support lower section 32, wherein the support upper section 31 is formed at the top of the support lower section 32. The bottom of the outer wall of the support lower section 32 is uniformly formed with a plurality of bottom connecting frames 321 that are connected to the hydraulic push rods 20 along its radial direction, so that the upper end of each hydraulic push rod 20 is rotatably connected to the adjacent bottom connecting frames 321, thereby utilizing the deflection of the hydraulic push rod 20 itself and the telescopic activity of its output end to push the central support 30 to tilt.

[0028] See also Figure 2 , a plurality of top connecting frames 311 which are connected to the retracting and unfolding assembly 40 are uniformly formed on the outer wall of the upper section 31 of the support along its radial direction. The retracting and unfolding assembly 40 includes a linear driving source 41, a lifting member 42, a plurality of hangers 43 and a collar 45, and a deflection shaft 44 twice the number of the hangers 43. The linear driving source 41 is installed at the center position of the central support 30, and the output end of the linear driving source 41 is connected to the lifting member 42, so that it can drive the lifting member 42 to move along a straight line. The linear driving source 41 can adopt a driving device with an output end that can move along a straight line, such as an electric push rod, a hydraulic push rod or a pneumatic push rod in the prior art. The outer wall of the lifting member 42 is uniformly formed with protruding connecting parts 421 equal to the number of hangers 43 along its radial direction. Each protruding connecting part 421 is rotatably connected to the top end of the adjacent hanger 43, and the bottom end of each hanger 43 is rotatably connected to a collar 45. One end of a plurality of deflection shafts 44 close to the center support 30 is rotatably connected to the adjacent top connection frame 311, and a plurality of collars 45 are respectively sleeved on the adjacent deflection shafts 44 and fixedly connected thereto. Thus, when the lifting member 42 is driven to move, the collars 45 connected thereto can be driven by the hanger 43, so that the deflection shafts 44 sleeved with the collars 45 generate deflection activities with the connection between the deflection shafts 44 and the top connection frame 311 as the deflection center.

[0029] See also Figure 2 and Figure 5, the number of photovoltaic modules 50 is set to an even number, and each photovoltaic module 50 includes an outer frame 51, a first ring 52, a second ring 53 and a photovoltaic panel 54. The interior of each outer frame 51 is fixedly connected to a plurality of purlins spaced along the length direction of the outer frame 51, and the plurality of purlins are used to install, fix and support the photovoltaic panel 54, so that the photovoltaic panel 54 can be installed and fixed on the inner side of the outer frame 51. The first ring 52 and the second ring 53 are respectively formed on the outer walls of the two opposite sides of the outer frame 51, and the first ring 52 and the second ring 53 are respectively deflectably sleeved on the adjacent deflection shaft 44, so that when the deflection shaft 44 sleeved with the ring 45 deflects and moves, the photovoltaic module 50 can be driven to move accordingly, and the two photovoltaic modules 50 as a group can be deflected upward to form a cone-shaped distribution between the two. When the airflow flows through the convex angle position formed by the two photovoltaic modules 50 as a group, a vortex will be formed at this position. This vortex lifts the incoming flow, showing a certain "vortex cushion" effect. This effect helps the airflow to flow quickly to the upper and rear of the object, thereby reducing the direct contact area and friction time between the airflow and the object. Due to the existence of the vortex, the airflow can change direction more smoothly when flowing through the convex corner, reducing the turbulence and resistance caused by the sharp turn of the airflow. The vortex at the convex corner not only affects the direction of the airflow, but also changes the structure of the flow field. Under the action of the vortex, the flow of the airflow in front of the convex corner becomes smoother, reducing the additional resistance caused by the turbulence of the airflow. At the same time, the vortex also makes the distribution of the airflow behind the convex corner more uniform, reducing the turbulence intensity. From a macroscopic perspective, the vortex effect at the convex corner and the change in the flow field structure work together to enable the airflow to pass more smoothly when flowing through the object, thereby reducing wind resistance. From a microscopic perspective, the particles in the airflow are also affected by the vortex when flowing through the convex corner, and their motion trajectory and velocity distribution change, thereby reducing the friction and collision between the particles and the surface of the object and reducing wind resistance.

[0030] In this embodiment, the deflection shaft 44 constitutes the supporting structure of the stowage and expansion assembly 40, and a limiting baffle is formed at one end of the deflection shaft 44 away from the central support 30, and the first ring 52 or the second ring 53 sleeved on each deflection shaft 44 is located between the ring 45 and the limiting baffle.

[0031] In this embodiment, a comprehensive observation system integrating various meteorological element measurement devices available in the prior art may also be included. The comprehensive observation system may include components such as anemometers and wind direction sensors, so that it can monitor relevant meteorological parameters such as wind speed and wind direction.

[0032] The system of the present invention may also include a control system for receiving meteorological parameters monitored by the integrated observation system, and for controlling the driving operation of the linear drive source and the hydraulic push rod to automatically adjust the application state and wind resistance state of the photovoltaic module. It should be understood that the control system has no particular limitation and can be implemented by the control technology in the prior art, which will not be described in detail here.

[0033] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A wind resistance control device for a photovoltaic support array, comprising a base (10), a plurality of hydraulic push rods (20), a central support (30), a retracting and unfolding assembly (40) and a plurality of photovoltaic assemblies (50), The lower ends of the plurality of hydraulic push rods (20) are mounted on the base (10), the upper ends of the plurality of hydraulic push rods (20) are connected to the central support (30), and the plurality of hydraulic push rods (20) adjust the tilting state of the central support (30) through the telescopic movement of their output ends and their own deflection movement; The folding and unfolding assembly (40) is installed at the center position of the central support (30), and the folding and unfolding assembly (40) is provided with a plurality of supporting structures distributed outside the central support (30) and capable of being driven to deflect and move; A plurality of the photovoltaic components (50) are distributed at intervals between a plurality of support structures of the stowage and deployment component (40), and each of the photovoltaic components (50) is respectively connected to two adjacent support structures, so that the photovoltaic components (50) can adjust their position state by utilizing the movement of the support structures; The position states of the plurality of photovoltaic components (50) include an application state when they are all in the same plane, and a wind-resistant state in which two adjacent photovoltaic components (50) form a group to form a convex angle.

2. The wind resistance control device for a photovoltaic support array according to claim 1, characterized in that: The central support (30) comprises a support upper section (31) and a support lower section (32), wherein the support upper section (31) is formed at the top of the support lower section (32), and a plurality of top connecting frames (311) are evenly formed along the radial direction on the outer wall of the support upper section (31) and are connected to the retracting and unfolding assembly (40), and a plurality of bottom connecting frames (321) are evenly formed along the radial direction on the bottom of the outer wall of the support lower section (32) and are connected to the hydraulic push rod (20).

3. The wind resistance control device for a photovoltaic support array according to claim 2, characterized in that: The retracting and extending assembly (40) comprises a linear drive source (41), a lifting member (42), a plurality of hangers (43) and collars (45), and a deflection shaft (44) twice the number of the hangers (43). The linear drive source (41) is installed at the center position of the central support (30), and the output end of the linear drive source (41) is connected to the lifting member (42). The outer wall of the lifting member (42) is uniformly formed with the same number of the hangers (43) along its radial direction. ) have an equal number of protruding connection parts (421), each of the protruding connection parts (421) is rotatably connected to the top end of an adjacent hanger (43), the bottom end of each hanger (43) is rotatably connected to a collar (45), one end of a plurality of deflection shafts (44) close to the central support (30) is rotatably connected to adjacent top connection frames (311), and a plurality of collars (45) are respectively sleeved on adjacent deflection shafts (44) and fixedly connected thereto.

4. The wind resistance control device for a photovoltaic support array according to claim 3, characterized in that: The photovoltaic assembly (50) comprises an outer frame (51), a first ring (52), a second ring (53) and a photovoltaic panel (54); the photovoltaic panel (54) is mounted and fixed on the inner side of the outer frame (51); the first ring (52) and the second ring (53) are respectively formed on two opposite outer walls of the outer frame (51); and the first ring (52) and the second ring (53) are respectively rotatably sleeved on adjacent deflection axes (44).

5. The wind resistance control device for a photovoltaic support array according to claim 4, characterized in that: The number of the photovoltaic components (50) is set to an even number.

6. A wind resistance control device for a photovoltaic support array according to claim 4 or 5, characterized in that: A plurality of purlins spaced apart along the length direction of the outer frame (51) are fixedly connected to the interior of each outer frame (51), and the plurality of purlins are used to install, fix and support the photovoltaic panels (54).

7. The wind resistance control device for a photovoltaic support array according to claim 4, characterized in that: The deflection shaft (44) constitutes a supporting structure of the retractable and unfoldable assembly (40), and a limit baffle is formed at one end of the deflection shaft (44) away from the central support (30), and the first sleeve ring (52) or the second sleeve ring (53) sleeved on each deflection shaft (44) is located between the sleeve ring (45) and the limit baffle.

8. The wind resistance control device for a photovoltaic support array according to claim 2, characterized in that: The base (10) comprises a weight-bearing portion (11), a plurality of mounting brackets (12) and a movable seat (13); the plurality of mounting brackets (12) are formed on the top of the weight-bearing portion (11), and the top end of each mounting bracket (12) is rotatably connected to a movable seat (13).

9. The wind resistance control device for a photovoltaic support array according to claim 8, characterized in that: The lower end of each hydraulic push rod (20) is fixedly connected to a movable seat (13), and the upper end of each hydraulic push rod (20) is rotatably connected to an adjacent bottom connecting frame (321).

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