Ice-resistant device for fixed offshore photovoltaic pile foundation in ice area and offshore photovoltaic pile foundation

Abstract

The utility model belongs to the technical field of ice-resistant devices, and provides an ice-resistant device for a fixed offshore photovoltaic pile foundation in an ice area and an offshore photovoltaic pile foundation, which comprises a floating layer and an ice knife arranged on the floating layer, the ice skate blade is arranged on the floating layer, the floating layer comprises two semicircular cavity structures, lug plates are arranged at the two ends of each semicircular cavity structure, bolt connecting holes are formed in the lug plates, the pile foundation is sleeved with the two semicircular cavity structures, and when seawater ascends and descends, the floating layer can ascend and descend along with changes of the sea water surface; the phenomenon that the whole ice-resistant device is located above or below the water surface is avoided; meanwhile, the ice skate blade comprises a plurality of tool bits which are arranged in a crossed mode, flowing ice in multiple directions can be damaged, and the protection effect on the pile foundation is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of ice-resistant devices, and in particular relates to an ice-resistant device for a fixed offshore photovoltaic pile foundation in an ice area and an offshore photovoltaic pile foundation. Background Art

[0002] With the advancement of the offshore photovoltaic industry, fixed offshore photovoltaics, as the main form of offshore photovoltaics, has developed rapidly. However, for fixed offshore photovoltaic projects in ice areas, the ice resistance of pile foundations is an important issue that needs to be solved urgently. The support structure of fixed offshore photovoltaic modules is generally divided into two parts, namely the upper part is a steel structure photovoltaic bracket, and the lower part is a steel pipe pile or PHC pipe pile foundation. The cross-section of the pile foundation is small, the lateral stiffness is small, and it cannot effectively resist the lateral impact of ice loads.

[0003] The inventors have discovered that the anti-ice device currently installed on the pile foundation cannot automatically rise and fall with the rise and fall of sea water, resulting in the anti-ice device being located above or below the water surface as a whole. At this time, the drifting ice on the water surface cannot be destroyed, and the pile foundation protection ability is lost; and, due to the uncertain wind direction, the impact direction of the drifting ice on the pile foundation is highly random, and the current anti-ice device cannot be used to destroy and protect drifting ice in multiple directions. Utility Model Content

[0004] In order to solve the above-mentioned problem, the utility model proposes an anti-ice device and an offshore photovoltaic pile foundation for a fixed offshore photovoltaic pile foundation in an ice area. The ice knife of the utility model is arranged on a floating layer, and the floating layer is sleeved on the pile foundation through two semicircular cavity structures. When the sea water rises and falls, the floating layer can rise and fall with the changes in the sea water level, thereby avoiding the phenomenon that the anti-ice device is located above or below the water surface as a whole; at the same time, the ice knife includes a plurality of cross-arranged blade heads, which can destroy drifting ice in multiple directions, thereby ensuring the protective effect on the pile foundation.

[0005] According to some embodiments, the first solution of the utility model provides an anti-icing device for a fixed offshore photovoltaic pile foundation in an ice area, which adopts the following technical solution:

[0006] An anti-ice device for a fixed offshore photovoltaic pile foundation in an ice area, comprising a floating layer, and an ice cutter arranged on the floating layer;

[0007] The floating layer includes two semicircular cavity structures, both ends of the two semicircular cavity structures are provided with ear plates, and the ear plates are provided with bolt connection holes; the ice skates include a plurality of cross-arranged blade heads.

[0008] Furthermore, the ice skates include a plurality of first blade heads, and a second blade head disposed between two adjacent first blade heads.

[0009] Furthermore, reinforcing ribs are provided inside the semi-circular cavity structure of the floating layer.

[0010] Furthermore, the two semi-circular cavity structures of the floating layer are sleeved on the pile foundation, and the ear plates at both ends of the two semi-circular cavity structures are connected by bolts.

[0011] Furthermore, a shock-absorbing layer is provided inside the floating layer.

[0012] Furthermore, a protective layer is provided inside the shock-absorbing layer.

[0013] Furthermore, the protective layer is a hard rubber layer.

[0014] Furthermore, at a preset distance from both ends of the floating layer, limit members fixed on the pile foundation are provided.

[0015] Furthermore, the limit members are limit rings or limit rods.

[0016] According to some embodiments, the second solution of the present utility model provides an offshore photovoltaic pile foundation, adopting the following technical solution:

[0017] An offshore photovoltaic pile foundation includes an ice-resistant device for an ice zone fixed offshore photovoltaic pile foundation as described in the first solution.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] In the present utility model, the ice blades are arranged on the floating layer. The floating layer includes two semi-circular cavity structures, and ear plates are provided at both ends of the two semi-circular cavity structures. Bolt connection holes are provided on the ear plates. By sleeving the two semi-circular cavity structures on the pile foundation, when the sea water rises and falls, the floating layer can rise and fall with the change of the sea surface, avoiding the phenomenon that the entire ice-resistant device is above or below the water surface; at the same time, the ice blades include a plurality of intersecting cutter heads, which can destroy the drifting ice in multiple directions and ensure the protection effect on the pile foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specification drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0021] Figure 1 is a schematic structural diagram of the ice-resistant device of the present utility model;

[0022] Figure 2 is a top view of the ice-resistant device of the present utility model;

[0023] Wherein: 1. Ice skate; 101. First cutter head; 102. Second cutter head; 2. Floating layer; 201. Reinforcing rib; 202. Bolt connection hole; 3. Shock-absorbing layer; 4. Protective layer; 5. Limiting member; 6. Ear plate; 7. Bolt; 8. Nut; 9. Pile foundation. Detailed implementation mode

[0024] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0025] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further descriptions of the present utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0026] Fixed offshore photovoltaic: An offshore photovoltaic power generation system built on the sea with a fixed position of the power generation module.

[0027] Sea ice: All ice appearing on the sea is collectively referred to as sea ice.

[0028] Drift ice: Ice floating on the sea surface and drifting under the action of wind and current is called drift ice.

[0029] Embodiment 1:

[0030] As Figure 1 and Figure 2 shown, this embodiment provides an ice resistance device for a pile foundation of a fixed offshore photovoltaic in an ice area, including an ice skate 1, a floating layer 2, a shock-absorbing layer 3, a protective layer 4, a limiting member 5, etc.

[0031] The ice skate 1 is arranged on the floating layer 2 by bolt connection or other connection methods; the ice skate 1 includes a plurality of intersecting cutter heads. Optionally, the ice skate 1 includes a plurality of first cutter heads 101 and second cutter heads 102 arranged between adjacent two first cutter heads 101.

[0032] Specifically, the ice skate 1 includes a plurality of intersecting cutter heads, which can damage drift ice in multiple directions, ensuring the protection effect on the pile foundation. It can be understood that the layout with a plurality of intersecting cutter heads and cutter heads in multiple directions can damage drift ice in all directions.

[0033] In some embodiments, the ice skate 1 is made of a metal material or other composite materials. For example, it is disposed in a metal cavity with a corner mechanism, and the corner mechanism is a cutter head. Reinforcing ribs are arranged in the metal cavity to increase the stiffness of the ice skate 1. The length of the ice skate 1 should be greater than the extreme ice thickness within the service life of the pile foundation 9. The ice-facing surface area of the ice skate 1 is small, which can break up drifting ice and effectively reduce the ice load of the ice floe on the pile foundation 9. The ice skate 1 can be obtained by means such as welding or integral forming process, and the manufacturing quality is controllable. When the ice skate 1 with an integral forming structure is adopted, compared with forms such as steel structures, operations such as welding are reduced, the structural integrity is stronger, the corrosion resistance is better, the mechanical properties are more excellent, and the durability is better.

[0034] The floating layer 2 includes two semi-circular cavity structures, and ear plates 6 are arranged at both ends of the two semi-circular cavity structures; the two semi-circular cavity structures of the floating layer 2 are sleeved on the pile foundation 9.

[0035] Specifically, the floating layer 2 is sleeved on the pile foundation 9 through two semi-circular cavity structures. When the sea water rises and falls, the floating layer 2 can drive the ice skate 1 to rise and fall with the change of the sea surface, avoiding the phenomenon that the anti-icing device is entirely above or below the water surface.

[0036] Optionally, the two semi-circular cavity structures of the floating layer 2 can be set as sealed metal cavities or cavities of other materials, and can float on the sea surface through buoyancy.

[0037] Reinforcing ribs 201 are arranged in the semi-circular cavity structure of the floating layer 2; the reinforcing ribs 201 can adopt structures such as metal rods. For example, a plurality of inclined rods connected end to end are arranged in the semi-circular cavity structure, which improves the stability of the floating layer 2.

[0038] The main method of traditional anti-icing devices is to install them on the pile foundation 9 with fixed positions and cannot be effectively disassembled, resulting in insufficient flexibility of traditional anti-icing devices. Moreover, they cannot be disassembled after being damaged, resulting in the inability to repair and replace the anti-icing devices in time after being damaged. Based on this, bolt connection holes 202 are arranged on each ear plate 6. The two semi-circular cavity structures of the floating layer 2 are sleeved on the pile foundation 9, and the ear plates 6 at both ends of the two semi-circular cavity structures are connected by bolts 7 and nuts 8 arranged in the bolt connection holes 202; the detachable of the entire device on the pile foundation 9 is realized.

[0039] In some embodiments, optionally, the floating layer 2 is enclosed by an outer frame of a metal material or other composite materials, and reinforcing ribs 201 are arranged inside the floating layer 2 to increase the cavity stiffness. The presence of the floating layer 2 can ensure that the anti-icing device can float to the anti-icing position according to the water level change in seawater.

[0040] A shock-absorbing layer 3 and a protective layer 4 are sequentially arranged inside the floating layer 2; it can be understood that the protective layer 4 is arranged on the pile foundation 9 by bonding or other connection methods; the shock-absorbing layer 3 is arranged on the protective layer 4 by bonding or bolt connection or other methods; a gap is reserved between the floating layer 2 and the shock-absorbing layer 3 to ensure that the floating layer 2 can move up and down. Alternatively, the shock-absorbing layer 3 is arranged on the protective layer 4 by bonding or bolt connection or other methods, and the shock-absorbing layer 3 is connected to the floating layer 2 by bonding or bolt connection or other methods; a gap is reserved between the protective layer 4 and the pile foundation 9 to ensure that the entire ice-resistant device can move up and down.

[0041] In some embodiments, the shock-absorbing layer 3 is an energy-absorbing shock-absorbing layer, which can be made of shock-absorbing materials such as rubber. Its function is to absorb and dissipate the energy generated by the impact of ice floes, reduce the vibration and displacement of the pile foundation 9 caused by the impact of ice floes, and ensure that the photovoltaic panels on top of the pile foundation 9 will not be affected by excessive vibration and deformation caused by the impact of ice floes and thus affect their power generation efficiency.

[0042] In some embodiments, the protective layer 4 is a hard rubber layer, which is arranged at the junction of the ice-resistant device and the pile foundation 9. Its main function is to prevent the moving ice from hitting the ice-resistant device and thus causing a collision between the device and the pile foundation 9, resulting in damage to the ice-resistant device or the pile 9.

[0043] Optionally, at a preset distance at both ends of the floating layer 2, a limiting member 5 fixed on the pile foundation 9 is provided. Optionally, the limiting member 9 is a limiting ring or a limiting rod arranged on the pile foundation 9 by welding or bolt connection or other connection methods.

[0044] The floating range of the ice-resistant device is defined by the limiting member 9. The limiting member 9 ensures that the ice-resistant device floats between the high and low water levels in winter (i.e., within the range of the impact of moving ice in winter), ensuring that when the moving ice comes, it hits the ice-resistant device, so that the ice-resistant device plays its due role.

[0045] In some embodiments, the ear plate 6 can also be set as a connecting flange. The ice-resistant device is installed on the pile foundation 9 by bolt 7 connection. The ice-resistant device is divided into two halves, and the two halves are connected by bolt 7, which is convenient for later disassembly, operation and maintenance.

[0046] The ice-resistant device in this embodiment has the advantages of good durability and convenient disassembly of the device, which is convenient for later maintenance and replacement; it can effectively reduce the ice load, reduce the impact force of the horizontal ice load on the pile foundation, and ensure the safety of the structure under the action of the ice load. Through the ice-resistant device in this embodiment, it is beneficial to weaken the ice load of sea ice on the offshore photovoltaic pile foundation in the ice area, thereby optimizing the pile foundation usage and reducing the construction cost; it makes up for the deficiencies of the existing pile foundation ice-resistant devices, can well cope with complex offshore ice-resistant conditions, and reduces the pressure of later operation and maintenance.

[0047] Embodiment 2:

[0048] This embodiment provides an offshore photovoltaic pile foundation, including an ice-resistant device for the fixed offshore photovoltaic pile foundation in ice areas as described in Embodiment 1; other components of the offshore photovoltaic pile foundation can be realized by conventional technologies and will not be elaborated here.

[0049] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An anti-icing device for fixed offshore photovoltaic pile foundations in ice areas, characterized in that, It includes a floating layer and ice skates arranged on the floating layer; The floating layer includes two semi-circular cavity structures. At both ends of the two semi-circular cavity structures, there are ear plates provided with bolt connection holes; the ice skates include a plurality of cross-set blade tips.

2. The anti-icing device for the fixed offshore photovoltaic pile foundation in ice area according to claim 1, characterized in that, The ice skates include a plurality of first blade tips and second blade tips arranged between two adjacent first blade tips.

3. The anti-icing device for the fixed offshore photovoltaic pile foundation in ice area according to claim 1, characterized in that, Reinforcing ribs are arranged in the semi-circular cavity structure of the floating layer.

4. The anti-icing device for the fixed offshore photovoltaic pile foundation in ice area according to claim 1, characterized in that, The two semi-circular cavity structures of the floating layer are sleeved on the pile foundation, and the ear plates at both ends of the two semi-circular cavity structures are connected by bolts.

5. The anti-icing device for the fixed offshore photovoltaic pile foundation in ice area according to claim 1, wherein A shock-absorbing layer is arranged in the floating layer.

6. The anti-icing device for the fixed offshore photovoltaic pile foundation in ice area according to claim 5, characterized in that, A protective layer is arranged in the shock-absorbing layer.

7. The anti-icing device for the fixed offshore photovoltaic pile foundation in ice area according to claim 6, characterized in that, The protective layer is a hard rubber layer.

8. The ice resistance device for the fixed offshore photovoltaic pile foundation in ice area according to claim 1, characterized in that, At a preset distance from both ends of the floating layer, there are limiters fixed on the pile foundation.

9. The anti-icing device for the fixed offshore photovoltaic pile foundation in ice area according to claim 8, characterized in that, The limiter is a limit ring or a limit rod.

10. Offshore photovoltaic pile foundation, characterized in that, It includes an ice-resistant device for an ice zone fixed offshore photovoltaic pile foundation according to any one of claims 1-9.

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