Bidirectional damping device between flexible photovoltaic support rows

Abstract

The invention discloses a bidirectional damping device between flexible photovoltaic support rows, and the bidirectional damping device is installed between adjacent single-layer flexible photovoltaic supports, and comprises an adjustable damper and two springs. The two springs are arranged on the two sides of the adjustable damper respectively, and meanwhile the two springs are fixedly connected with the bearing cable steel strands of the adjacent single-layer flexible photovoltaic supports respectively. Vibration in the axial direction and the tangential direction can be controlled and reduced at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic supports, and in particular to a bidirectional damping device between rows of flexible photovoltaic supports. Background Art

[0002] The new energy industry has become a hot sector in recent years. The scale of photovoltaic installations has been expanding annually, while available land resources have been decreasing. Mountainous applications are becoming increasingly common. Flexible photovoltaic racks can span a variety of unfavorable mountainous terrains, enabling intensive land development. Mountainous terrain is generally complex, and single-layer flexible photovoltaic racks offer good adaptability. However, their resistance to rollover and torsion under wind loads is weaker than that of double-layer flexible photovoltaic racks, and the mid-span amplitude is relatively large. Adding complex structural measures would make it difficult to meet minimum ground clearance requirements.

[0003] Publication No. CN118971735A proposes a damping cable structure for a flexible photovoltaic support and a flexible photovoltaic support using a damper to connect photovoltaic modules to the foundation, reducing the adverse effects of vibration and wind loads on single-layer flexible photovoltaic supports. However, this device requires ground anchors for connection to the foundation, increasing the amount of foundation work and potentially failing to meet minimum ground clearance requirements. Furthermore, its advantages only apply vertically, failing to enhance the connection between lateral modules.

[0004] Publication No. CN119373832A proposes a load-bearing cable vibration reduction device and flexible photovoltaic support, which transfers vibration energy to the device, fixed to the load-bearing cable strands, to improve wind protection. However, this device fails to effectively reduce the mid-span amplitude of the flexible photovoltaic support and only helps reduce vibration in one direction, with little effect on vertical vibration control.

[0005] It can be seen from this that the existing damping or vibration reduction solutions applied to single-layer cable flexible photovoltaic supports cannot achieve two-way vibration control, and require increased foundation engineering volume, making it difficult to meet the minimum height from the ground. They are all limited to single-row support settings, without horizontal connection and no length adjustment function. There is room for improvement in the utilization efficiency of the device. Summary of the Invention

[0006] In view of this, the present invention provides a bidirectional damping device between rows of flexible photovoltaic supports, which can simultaneously control and reduce vibrations in both axial and tangential directions.

[0007] The technical solution adopted in the present invention is as follows:

[0008] A bidirectional damping device between rows of flexible photovoltaic supports, the bidirectional damping device being installed between adjacent single-layer flexible photovoltaic supports and comprising an adjustable damper and two springs;

[0009] The two springs are respectively arranged on both sides of the adjustable damper, and the two springs are respectively fixedly connected to the load-bearing cable steel strands of the adjacent single-layer flexible photovoltaic supports.

[0010] Furthermore, the spring is fixed to the adjustable damper via a spring sleeve;

[0011] The spring sleeve is a hollow spiral sleeve with the same rotation as the spring; one end of the spring sleeve is fixed on the adjustable damper, and the other end of the spring sleeve remains free; one end of the spring is fixedly connected to the single-layer flexible photovoltaic bracket, and the other end is screwed into the free end of the spring sleeve, and the length of the spring screw-in is adjustable.

[0012] Furthermore, a spring end plate is provided at the end of the spring connected to the single-layer flexible photovoltaic bracket. The spring end plate is provided with two circular holes for cooperating with U-shaped bolts to achieve connection with the single-layer flexible photovoltaic bracket.

[0013] Furthermore, the adjustable damper is a water tank, and a cover plate is provided on the top of the water tank, which serves as a water inlet and a water outlet, and the damping size is changed by the water level.

[0014] Furthermore, the bottom of the water tank is flush with the bottom of the spring sleeve.

[0015] Furthermore, the adjustable damper is an adjustable viscous damper or an electronically controlled friction damper.

[0016] Beneficial effects:

[0017] 1. The present invention sets two springs between adjacent single-layer flexible photovoltaic supports, which work together with the adjustable damper to simultaneously control and reduce vibrations in the axial direction (along the length of the spring) and the tangential direction (perpendicular to the length of the spring), effectively reducing the amplitude of the photovoltaic module and suppressing the flipping of the photovoltaic module. Moreover, the present invention can be arranged continuously in the horizontal direction to form a horizontal system, providing inter-row connection, providing lateral stiffness for the flexible support photovoltaic array, and cooperating with adjacent row support structures to resist wind loads, effectively exerting a spatial effect, not limited to improving resistance within a single plane, and improving the efficiency of the device.

[0018] Secondly, the device of the present invention is not connected to the foundation, which reduces the amount of foundation engineering while effectively ensuring the minimum height requirement from the ground, which can not only save engineering construction costs but also help engineering projects meet policy requirements.

[0019] 2. The spring of the present invention is fixed on the damping adjuster through a spring sleeve. The screwing length of the spring into the spring sleeve is adjustable, which can avoid the collision problem between the front and rear rows of components, appropriately reduce the layout spacing of photovoltaic components, and improve the land area utilization rate of the flexible photovoltaic bracket; it has good feasibility for flexible photovoltaic brackets in complex mountainous areas with limited construction conditions and uncertain distance between the front and rear rows of photovoltaic components.

[0020] 3. The present invention uses a water tank as an adjustable damper. The water tank can be filled with water to adjust its own weight, that is, the size of the damping can be adjusted at the same time, thereby increasing the damping of the entire bracket, enhancing the energy dissipation of the bracket, accelerating vibration attenuation, suppressing the resonance of the photovoltaic module, and reducing the amplitude of the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the horizontal system formed by the present invention installed between rows of flexible photovoltaic supports.

[0022] Figure 2 for Figure 1 Top view.

[0023] Figure 3 This is a schematic diagram of the present invention installed between adjacent single-layer flexible photovoltaic supports.

[0024] Figure 4 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 5 Schematic diagram of the connection between the spring and the spring end plate.

[0026] Figure 6 Schematic diagram of the water tank structure.

[0027] Among them, 1-spring, 2-spring sleeve, 3-water tank, 4-cover plate, 5-spring end plate, 6-front photovoltaic bracket, 7-rear photovoltaic bracket, 8-photovoltaic module. DETAILED DESCRIPTION

[0028] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0029] The present invention provides a bidirectional damping device between rows of flexible photovoltaic supports, which is installed between adjacent single-layer flexible photovoltaic supports in the front and rear rows and can be arranged continuously in the horizontal direction to form a horizontal system, cooperating with the adjacent rows of support structures to resist wind loads. Figure 1 、 Figure 2 shown.

[0030] The bidirectional damping device includes an adjustable damper and two springs 1; the two springs 1 are respectively arranged on both sides of the adjustable damper, and the two springs 1 are respectively fixed to the load-bearing cable steel strands of the adjacent front photovoltaic bracket 6 and rear photovoltaic bracket 7.

[0031] Under wind load conditions, the photovoltaic modules 8 and the load-bearing cable strands on a single-layer flexible photovoltaic support will jointly produce coupled vibration and torsion motion. The springs 1 between the front and rear rows of the support can transfer loads through the load-bearing cable strands, providing flexible support for the photovoltaic modules 8 to effectively resist vibration and torsion. Under wind load, the photovoltaic modules 8 will vibrate and torsion. At this time, the dynamic load is transferred from the load-bearing cable strands to the springs 1. The restoring force generated by the deformation of the springs 1 acts in the opposite direction on the photovoltaic modules 8, reducing axial displacement (along the length of the spring). The water tank acts as a damping device to reduce tangential displacement (tangential and perpendicular to the axial direction), increasing the damping coefficient of the flexible photovoltaic support structure, reducing the maximum amplitude and accelerating vibration attenuation. When the photovoltaic modules 8 begin to torsion, the distance between the front and rear rows of photovoltaic modules 8 will increase, similarly transferring the dynamic load to the springs 1. The same principle is used to reduce displacement and suppress flipping of the photovoltaic modules 8.

[0032] Specifically, if Figure 3 、 Figure 4 As shown, spring 1 is secured to the adjustable damper via spring sleeve 2. Spring sleeve 2 is a hollow, spiral tube with the same degree of rotation as spring 1. One end of spring sleeve 2 is secured to the damping adjuster, while the other end remains free. One end of spring 1 is fixed to the load-bearing cable strand of the single-layer flexible photovoltaic support, while the other end is screwed into the free end of spring sleeve 2. The length of the screwed-in spring 1 is adjustable.

[0033] like Figure 5 As shown, the end of the spring 1 connected to the single-layer flexible photovoltaic support is equipped with a spring end plate 5. The spring end plate 5 has two circular holes. Fixing hardware is used to connect the spring end plate 5 to the load-bearing cable strand. In this embodiment, the spring end plate 5 is a square flat plate that is connected to the load-bearing cable strand by using U-bolts.

[0034] In this embodiment, the damping regulator is a water tank 3, and the bottom of the water tank 3 is flush with the bottom of the spring sleeve 2 to prevent the bottom of the water tank 3 from protruding from the bottom of the spring 1, which affects the passing rate of the channel between the rows of flexible photovoltaic brackets; Figure 6 As shown, a cover plate 4 is provided on the top of the water tank 3, which serves as a water inlet and a water outlet. The dead weight is adjusted by the water level, that is, the damping size is changed at the same time, thereby increasing the damping of the entire bracket, thereby enhancing the energy dissipation of the photovoltaic component 8, accelerating the vibration attenuation, suppressing the resonance of the photovoltaic component 8, and reducing the amplitude of the photovoltaic component 8.

[0035] The damping adjuster may also be other variable damping devices, such as an adjustable viscous damper or an electronically controlled friction damper.

[0036] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flexible photovoltaic support inter-row bidirectional damping device, characterized in that: The bidirectional damping device is installed between adjacent single-layer flexible photovoltaic supports, and the bidirectional damping device includes an adjustable damper and two springs; The two springs are respectively arranged on both sides of the adjustable damper, and the two springs are respectively fixedly connected to the load-bearing cable steel strands of the adjacent single-layer flexible photovoltaic supports.

2. The flexible photovoltaic support inter-row bidirectional damping device according to claim 1, characterized in that: The spring is fixed to the adjustable damper via a spring sleeve; The spring sleeve is a hollow spiral sleeve with the same rotation as the spring; one end of the spring sleeve is fixed on the adjustable damper, and the other end of the spring sleeve remains free; one end of the spring is fixedly connected to the single-layer flexible photovoltaic bracket, and the other end is screwed into the free end of the spring sleeve, and the length of the spring screw-in is adjustable.

3. The flexible photovoltaic support inter-row bidirectional damping device according to claim 2, characterized in that: The end of the spring connected to the single-layer flexible photovoltaic bracket is provided with a spring end plate, and the spring end plate is provided with two circular holes for cooperating with U-shaped bolts to achieve connection with the single-layer flexible photovoltaic bracket.

4. The flexible photovoltaic support inter-row bidirectional damping device according to claim 2 or 3, characterized in that: The adjustable damper is a water tank with a cover plate on the top serving as a water inlet and a water outlet, and the damping size is changed by the water level.

5. The flexible photovoltaic support inter-row bidirectional damping device according to claim 4, characterized in that: The bottom of the water tank is flush with the bottom of the spring sleeve.

6. The flexible photovoltaic support inter-row bidirectional damping device according to claim 2, characterized in that: The adjustable damper is an adjustable viscous damper or an electronically controlled friction damper.

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