An anti-icing device for a floating photovoltaic support structure at sea

Abstract

The utility model relates to the technical field of ocean engineering discloses an anti-ice device suitable for offshore floating photovoltaic support structure, including steel pipe, and fixed in rigid energy -absorbing buffer layer and the floating combination that can slide along steel pipe of steel pipe, and the floating combination is constituted by wedge-shaped anti-ice block and floater, between rigid energy -absorbing buffer layer and wedge-shaped anti-ice block, buffer rubber pad and giant spring are sequentially connected in series, and are guided through thin -walled cylinder. The utility model solves the problem that the existing device cannot adapt to the tide level and the problem of insufficient buffering. It drives the wedge-shaped anti-ice block to float with the tide level through the floater, and changes the damage mode of ice by using the wedge-shaped structure, at the same time, stably dissipates the impact energy through the multistage buffer system, greatly improves the safety and reliability of photovoltaic support structure in the ice area.

Description

Technical Field

[0001] This utility model relates to the field of marine engineering technology, and in particular to an anti-icing device suitable for floating photovoltaic support structures at sea. Background Technology

[0002] Floating photovoltaic (PV) power generation, as an emerging clean energy development model, is attracting increasing attention due to its advantages such as not occupying land resources and having excellent sunlight conditions. Extending PV power plants from land to the ocean is an important direction for future energy development.

[0003] However, in the cold waters where sea ice forms in winter, the survival and stable operation of floating photovoltaic facilities face severe natural challenges. Sea ice moves under the influence of ocean currents, wind, and tides, generating enormous dynamic ice forces. When these ice floes collide with the supporting structure of the photovoltaic power station, they generate huge impact, compression, and shear forces, directly threatening the structural safety of the entire facility.

[0004] To address this challenge, existing offshore platforms typically employ methods such as reinforcing structural foundations or installing simple rigid anti-collision devices for protection. However, in sea areas with significant tidal phenomena, water levels fluctuate periodically, exposing the fundamental limitations of this fixed-height protection method. At low tide, sea ice may pass beneath the protective device, directly impacting weak points in the structure; conversely, at high tide, the point of impact of sea ice is higher than the designed location of the protective device, rendering it ineffective. This protection mode, unable to adapt to dynamic water level changes, makes it difficult for existing ice-resistant structures to provide continuous and effective protection throughout the entire tidal cycle.

[0005] Furthermore, even if the issue of operational height is resolved, the key to successful protection lies in effectively absorbing and dissipating the immense impact energy of sea ice, rather than simply resisting it rigidly. A purely structurally robust approach not only subjectes the protective device and main structure to enormous instantaneous stress, easily leading to fatigue damage or even structural failure, but also significantly increases construction costs. Currently, there is a general lack of a comprehensive solution that integrates dynamic buoyancy adaptability to tidal changes with an efficient energy buffering and absorption mechanism.

[0006] Therefore, this utility model proposes an anti-icing device suitable for floating photovoltaic support structures at sea to overcome the shortcomings of the prior art. Utility Model Content

[0007] In view of the problems in the existing anti-icing devices applicable to floating photovoltaic support structures at sea, such as the inability to dynamically adjust the protective height with the rise and fall of tides and the lack of a multi-level buffer system that can stably and efficiently absorb and dissipate the huge impact energy of sea ice, this utility model aims to provide an anti-icing device with an improved structure that can effectively solve the above problems and is applicable to floating photovoltaic support structures at sea.

[0008] This utility model provides an anti-icing device suitable for floating photovoltaic support structures at sea, comprising: a steel pipe, a rigid energy-absorbing buffer layer, multiple thin-walled cylinders, a buffer rubber pad, a giant spring, a wedge-shaped anti-icing block, and a float.

[0009] The rigid energy-absorbing buffer layer is fixedly sleeved on the outer circumference of the steel pipe, and multiple thin-walled cylinders are fixed at one end and vertically connected to the upper surface of the rigid energy-absorbing buffer layer.

[0010] Furthermore, the buffer rubber pad has perforations corresponding to multiple thin-walled cylinders. The buffer rubber pad is slidably fitted onto the multiple thin-walled cylinders through its perforations and sits on the rigid energy-absorbing buffer layer. The giant spring sits on the buffer rubber pad, the bottom of the wedge-shaped anti-icing block abuts against the top of the giant spring, the float is fixedly connected to the bottom of the wedge-shaped anti-icing block, and the combination of the float and the wedge-shaped anti-icing block can be slidably fitted onto the outside of the steel pipe along the axial direction of the steel pipe.

[0011] Preferably, a cylinder is fixedly connected to the bottom of the wedge-shaped anti-ice block, and a groove adapted to the cylinder is opened on the top of the float, and the cylinder is riveted into the groove.

[0012] Preferably, the angle between the ice-facing surface of the wedge-shaped anti-ice block and the horizontal plane is 30 degrees.

[0013] Preferably, the rigid energy-absorbing buffer layer is made of shape memory alloy material.

[0014] Preferably, as a specific implementation, the rigid energy-absorbing buffer layer has a simple triangular prism stacked structure.

[0015] Preferably, the cushioning rubber pad is made of high-density polyisoprene material.

[0016] Preferably, the giant spring is made of spring steel.

[0017] Preferably, the float is made of high-density polyethylene material. This utility model has the following beneficial effects: 1. This utility model solves the problem that existing structures cannot adapt to changes in water level, resulting in destructive forces from ice layers at non-design heights, by setting up a floating body that can rise and fall with the tide and fixing the floating body to a wedge-shaped anti-ice block. This achieves the technical effect of ensuring that the anti-ice device can always be adapted to the sea level, effectively acting on the ice layer at different tide levels, and enhancing the environmental adaptability of the device.

[0018] 2. This utility model solves the problem that existing technologies typically resist the horizontal compression of sea ice with a specific tilt angle as the ice-facing surface, which is subject to huge impact forces and is prone to structural damage. It achieves the technical effect of changing the destruction mode of sea ice from compression destruction to bending destruction, significantly reducing the peak value of dynamic ice force, and realizing efficient and low-damage ice breaking.

[0019] 3. This utility model solves the problem that existing anti-icing structures lack an effective and stable energy absorption mechanism, which leads to direct damage to the main structure from impact kinetic energy. It achieves the technical effect of absorbing and dissipating sea ice impact energy in a phased and stable manner, greatly reducing the harmful forces transmitted to the photovoltaic structure foundation, and providing reliable protection for photovoltaic power plants. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of an anti-icing device for a floating photovoltaic support structure at sea, as proposed in this utility model. Figure 2 This utility model presents an assembly diagram of a buffer rubber and a rigid energy-absorbing buffer layer suitable for a floating photovoltaic support structure at sea. Figure 3 This is a schematic diagram of the floating structure of an anti-icing device suitable for offshore floating photovoltaic support structures proposed in this utility model; Figure 4 This is a schematic diagram of a thin-walled cylinder and a rigid energy-absorbing buffer layer structure suitable for a floating photovoltaic support structure at sea, as proposed in this utility model.

[0021] Legend: 1. Steel pipe; 2. Rigid energy-absorbing buffer layer; 3. Buffer rubber pad; 4. Giant spring; 5. Wedge-shaped anti-ice block; 6. Float; 7. Thin-walled cylinder; 8. Cylindrical body. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] Example: Please refer to Figures 1 to 4 This utility model provides an anti-icing device suitable for floating photovoltaic support structures at sea, which aims to solve the problem that existing marine photovoltaic structures lack a dedicated anti-icing protection structure that can adapt to tidal changes and integrate multi-level buffer energy absorption mechanisms to resist the impact of moving ice.

[0024] like Figure 1 As shown, the anti-icing device applicable to floating photovoltaic support structures at sea includes a steel pipe 1 as the core support and guide, and an anti-icing assembly arranged around the steel pipe 1. The anti-icing assembly mainly includes a buffer base part fixed to the steel pipe 1 and a floating ice-breaking part that can slide along the axial direction of the steel pipe 1. Specifically, the core of the buffer base part is a rigid energy-absorbing buffer layer 2, which is fixedly sleeved on the outer periphery of the steel pipe 1 to receive and dissipate impact energy. Multiple thin-walled cylinders 7 are also connected to the rigid energy-absorbing buffer layer 2. The core of the floating icebreaking section is a combination of wedge-shaped anti-ice blocks 5 and floats 6 fixedly connected together. The bottom of the wedge-shaped anti-ice blocks 5 is also connected to a cylinder 8. This combination can slide up and down along the axial direction of the steel pipe 1 and be fitted onto the outside of the steel pipe 1. It is used to directly interact with sea ice and provide buoyancy for the device. The buffer base and the floating icebreaking section are connected by a multi-stage buffer mechanism to realize the transmission and buffering of force. The multi-stage buffer mechanism consists of a giant spring 4 and a buffer rubber pad 3 connected in series from top to bottom, thus forming a complete mechanical structure that can effectively transmit the impact force from the floating icebreaking section to the buffer base section and finally act on the steel pipe 1.

[0025] The core buffer energy absorption structure of the anti-icing device consists of a rigid energy absorption buffer layer 2, a buffer rubber pad 3, a giant spring 4, and a thin-walled cylinder 7. Through specific structural cooperation and connection, a stable and efficient force transmission and energy dissipation channel is formed between the floating ice-breaking part and the buffer base part.

[0026] Please refer to the following carefully. Figures 3 to 4 The following is a detailed description of the buffer energy absorption structure: The rigid energy-absorbing buffer layer 2 is made of shape memory alloy material, and its interior has a simple triangular prism stacking structure to achieve final micro-energy absorption. On the upper surface of this rigid energy-absorbing buffer layer 2, one end is fixedly and vertically connected to multiple thin-walled cylinders 7. The buffer rubber pad 3 is made of high-density polyisoprene material, and has perforations corresponding to the multiple thin-walled cylinders 7. In the assembled state, the buffer rubber pad 3 slides onto the multiple thin-walled cylinders 7 through its perforations and sits on the rigid energy-absorbing buffer layer 2. This sliding fit guiding structure ensures… To ensure that the buffer rubber pad 3 remains stable during compression and rebound without lateral displacement, the giant spring 4, made of spring steel, sits on top of the buffer rubber pad 3 as the primary energy-absorbing element. The bottom of the wedge-shaped anti-ice block 5 abuts against the top of the giant spring 4, directly transferring the impact force from the sea ice to the giant spring 4. Through this series-connected hierarchical structure, the impact force of the sea ice acts sequentially on the giant spring 4, the buffer rubber pad 3, and the rigid energy-absorbing buffer layer 2, forming a phased energy absorption and ensuring that the impact force is dissipated smoothly.

[0027] Based on the above embodiments, the present invention may further include the following preferred technical solutions: As a preferred connection implementation, to achieve a stable and fixed connection between the wedge-shaped anti-ice block 5 and the float 6, please refer to... Figure 1 The bottom of the wedge-shaped anti-ice block 5 is fixedly connected to a cylinder 8, and the top of the float 6 is provided with a groove that matches the cylinder 8. By riveting the cylinder 8 into the groove, the wedge-shaped anti-ice block 5 and the float 6 are combined into a rigid whole. As a preferred implementation of structural parameters, in order to effectively change the ice destruction mode, the angle between the ice-facing surface of the wedge-shaped anti-ice block 5 and the horizontal plane is set to 30°. As a specific material and structural implementation, the rigid energy-absorbing buffer layer 2 is made of shape memory alloy material, and its overall structure is a simple triangular prism stacked structure. As a further optimization of the materials of each component, the buffer rubber pad 3 is made of high-density polyisoprene material, the giant spring 4 is made of spring steel material, and the float 6 is made of high-density polyethylene material.

[0028] The working principle of this utility model's anti-icing device for offshore floating photovoltaic support structures is as follows: In the initial state, the combination of the wedge-shaped anti-ice block 5 and the float 6 relies on the buoyancy provided by the float 6 to freely fit on the outside of the steel pipe 1, and automatically adjusts its height with the rise and fall of the tide, so that the ice-facing surface of the wedge-shaped anti-ice block 5 is always kept at a suitable height with the sea ice action surface. When the sea ice is impacted by the ocean current, it first comes into contact with the ice-facing surface of the wedge-shaped anti-ice block 5. Due to the 30° angle design between the ice-facing surface and the horizontal plane, the horizontal compressive force is effectively decomposed, changing the sea ice destruction mode from compression destruction to bending destruction, thereby significantly reducing the peak value of the impact force, and the broken ice blocks slide down the slope.

[0029] The impact force of sea ice is transmitted to the multi-stage buffer energy absorption mechanism through the wedge-shaped anti-ice block 5. First, the giant spring 4 is compressed, rapidly converting most of the impact kinetic energy into elastic potential energy. Next, the remaining impact force is transmitted to the buffer rubber pad 3, which undergoes stable compression deformation under the guidance of the thin-walled cylinder 7, further buffering and absorbing energy. Finally, the remaining small impact energy acts on the rigid energy-absorbing buffer layer 2 fixedly sleeved on the steel pipe 1. The simple triangular prism stacking structure and shape memory alloy material properties inside completely dissipate this part of the energy. Through the synergistic effect of floating ice breaking, force mode transformation and multi-stage buffer energy absorption, this utility model smoothly transmits and dissipates the huge kinetic energy of sea ice, greatly reducing the direct harmful force on the supporting steel pipe 1 and solving the problem of insufficient ice resistance of existing structures.

[0030] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An anti-icing device suitable for offshore floating photovoltaic support structures, comprising a steel pipe (1), characterized in that, Also includes: A rigid energy-absorbing buffer layer (2) is fixedly sleeved on the outer periphery of the steel pipe (1); Multiple thin-walled cylinders (7) are fixed at one end and vertically connected to the upper surface of the rigid energy-absorbing buffer layer (2); The buffer rubber pad (3) has perforations corresponding to the multiple thin-walled cylinders (7). The buffer rubber pad (3) is slidably fitted onto the multiple thin-walled cylinders (7) through its perforations and sits on the rigid energy-absorbing buffer layer (2). A giant spring (4) is situated on the cushioning rubber pad (3); A wedge-shaped anti-ice block (5) has its bottom abutting against the top of the giant spring (4); And a float (6), which is fixedly connected to the bottom of the wedge-shaped anti-ice block (5), and the combination of the float (6) and the wedge-shaped anti-ice block (5) can be slidably mounted on the outside of the steel pipe (1) along the axial direction of the steel pipe (1).

2. The anti-icing device for offshore floating photovoltaic support structures according to claim 1, characterized in that, The bottom of the wedge-shaped anti-ice block (5) is fixedly connected to a cylinder (8), and the top of the float (6) is provided with a groove that matches the cylinder (8), and the cylinder (8) is riveted into the groove.

3. The anti-icing device for offshore floating photovoltaic support structures according to claim 1, characterized in that, The angle between the ice-facing surface of the wedge-shaped anti-ice block (5) and the horizontal plane is 30°.

4. The anti-icing device for offshore floating photovoltaic support structures according to claim 1, characterized in that, The rigid energy-absorbing buffer layer (2) is made of shape memory alloy material.

5. The anti-icing device for offshore floating photovoltaic support structures according to claim 4, characterized in that, The rigid energy-absorbing buffer layer (2) has a simple triangular prism stacked structure.

6. The anti-icing device for offshore floating photovoltaic support structures according to claim 1, characterized in that, The cushioning rubber pad (3) is made of high-density polyisoprene material.

7. The anti-icing device for offshore floating photovoltaic support structures according to claim 1, characterized in that, The giant spring (4) is made of spring steel.

8. The anti-icing device for offshore floating photovoltaic support structures according to claim 1, characterized in that, The float (6) is made of high-density polyethylene material.

Images