Offshore photovoltaic foundation

Abstract

The utility model provides an offshore photovoltaic foundation which comprises a base module and M supporting modules. The base module is arranged on a seabed foundation and used for bearing the M supporting modules. The base module comprises a plurality of stabilizing units which are arranged in a staggered manner; the M supporting modules are arranged at the corresponding intersection points of the multiple stabilizing units correspondingly, and the two stabilizing units corresponding to each intersection point are connected in a mortise and tenon joint mode. The two ends of each supporting module are connected with the base module and the photovoltaic support respectively, and the adjacent supporting modules are spaced by a first preset distance. Each supporting module comprises N bearing units arranged at intervals of a second preset distance and a plurality of net-shaped connecting units; the two ends of each bearing unit are connected with the base module and the photovoltaic support respectively. And each net-shaped connecting unit is arranged between the adjacent bearing units. According to the utility model, through the cooperation of the plurality of bearing units and the net-shaped connecting units, the pressure borne by the supporting module is dispersed, and the stability of the photovoltaic foundation is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of ocean engineering foundation structure, especially relates to a sea photovoltaic foundation. BACKGROUND

[0002] As a new solar energy utilization direction, the offshore photovoltaic power station emerges as the times require and develops rapidly. Compared with the onshore photovoltaic, the offshore photovoltaic power station not only can effectively utilize the vast ocean space and reduce the land cost, but also can be closer to the southeast coastal cities with large power demand and strong consumption capacity, which helps to reduce power transmission loss and improve energy utilization efficiency.

[0003] The offshore photovoltaic system usually covers the pile foundation driven into the seabed and the photovoltaic support structure installed thereon, and the existing offshore photovoltaic mostly uses PHC pipe pile or spiral steel pile as the pile foundation.

[0004] However, the existing offshore photovoltaic system, although can meet the basic stability and safety requirements to a certain extent, faces severe challenges in structural stability and durability when facing complex external forces (such as strong wind, huge wave, tidal change, etc.) or needs to bear large load (such as the weight of photovoltaic components, additional load under extreme weather conditions such as snow or hail, etc.), thereby significantly increasing the risk of structural damage and affecting the safe operation and long-term benefits of the photovoltaic power station. SUMMARY

[0005] To solve the above problems, the utility model provides a kind of offshore photovoltaic foundation.

[0006] The utility model provides a kind of offshore photovoltaic foundation, including base module and M support module;

[0007] The base module is arranged on the foundation on the seabed, for carrying the M support module;

[0008] The base module includes a plurality of stable units arranged alternately;

[0009] M support module is respectively arranged at the corresponding intersection of the plurality of stable units, and the mortise and tenon joint between the corresponding two stable units at each intersection;

[0010] The two ends of each support module are connected with the base module and photovoltaic support respectively, and the adjacent support modules are spaced by a first preset distance;

[0011] Each support module includes N bearing units and a plurality of net-shaped connection units arranged at a second preset distance;

[0012] The two ends of each bearing unit are connected with the base module and photovoltaic support respectively;

[0013] Each netted connecting unit is arranged between adjacent load-bearing units.

[0014] Preferably, each support module further comprises a positioning unit.

[0015] The positioning unit is arranged between the N load-bearing units and the photovoltaic support, and is used for connecting the N load-bearing units and the photovoltaic support.

[0016] Preferably, the positioning unit comprises a fixedly connected extension subunit and a fixing subunit.

[0017] The extension subunit is arranged on a side of the photovoltaic support facing the support module.

[0018] The fixing subunit is connected to a side of the N load-bearing units facing the photovoltaic support.

[0019] Preferably, the N load-bearing units are arranged around the extension subunit.

[0020] Preferably, each support module further comprises N reinforcing units.

[0021] The N reinforcing units are arranged at preset heights of the corresponding load-bearing units.

[0022] Preferably, each reinforcing unit comprises a thickened section with two open ends, a reinforcing ring and a reinforcing rib.

[0023] The thickened section is wrapped around the preset height of the corresponding load-bearing unit.

[0024] The reinforcing ring is sleeved on the corresponding load-bearing unit and connected to one end of the thickened section.

[0025] One end of the reinforcing rib is connected to the thickened section, and the other end is connected to the reinforcing ring.

[0026] Preferably, the offshore photovoltaic foundation further comprises a sinking module.

[0027] The sinking module is arranged on a side of the base module facing the foundation, and is used for sinking into the seabed by the negative pressure principle to provide stability for the base module.

[0028] Preferably, the offshore photovoltaic foundation further comprises a limiting module.

[0029] The limiting module is arranged on a side of the sinking module facing the base module, and is used for preventing relative displacement of the base module and the sinking module.

[0030] Compared with the prior art, the utility model has the following beneficial effects:

[0031] (1) The present invention sets the support module into multiple load-bearing units and sets a mesh connection unit between adjacent load-bearing units. Through the cooperation of multiple load-bearing units and mesh connection units, the pressure on the support module is dispersed, and the stability of the photovoltaic foundation is enhanced.

[0032] (2) The present invention sets up a mesh connection unit between adjacent load-bearing units, which enhances the stability of the photovoltaic foundation while reducing the weight. Reducing the weight not only helps to reduce the difficulty and cost of the installation process, but also reduces the pressure of the foundation on the seabed soil layer, which is conducive to environmental protection and sustainable development.

[0033] (3) By introducing a positioning unit, this utility model achieves precise connection between N load-bearing units and the photovoltaic bracket, which not only ensures the simplicity and accuracy of the installation process, but also significantly improves the stability and connection strength of the entire structure. This helps to resist the influence of external environmental factors (such as wind pressure, snow load, etc.) on the photovoltaic system and ensures the safety and reliability of long-term operation;

[0034] (4) This utility model achieves a reasonable layout and force distribution of the load-bearing unit by setting the extension sub-unit and the fixing sub-unit in the positioning unit on the photovoltaic bracket and the load-bearing unit respectively. This design can ensure that each load-bearing unit can effectively bear the weight of the photovoltaic module and the external force generated, and avoid structural damage or performance degradation caused by uneven force. The design of the positioning unit and the reinforcing unit makes installation and maintenance more convenient and efficient, and reduces the difficulty and time cost of on-site construction.

[0035] (5) By adding N reinforcing units to the support module, especially by utilizing the combined structure of thickened sections, reinforcing rings and reinforcing ribs, this utility model can significantly improve the load-bearing capacity of the load-bearing unit. These reinforcing units can distribute and bear a larger load, ensuring the safe operation of the photovoltaic system under extreme weather conditions. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0037] Figure 2 This is a structural schematic diagram of the support module of this utility model;

[0038] Figure 3 This is a structural schematic diagram of the base module of this utility model;

[0039] Figure 4 This is a structural schematic diagram of the reinforcing unit of this utility model;

[0040] Figure 5 This is a structural schematic diagram of the sinking module of this utility model;

[0041] Figure 6 This is a structural schematic diagram of the limiting module of this utility model;

[0042] Figure 7 This is a structural schematic diagram of the reinforcing unit of this utility model;

[0043] Figure 8 This is a connection structure diagram of the reinforcement unit, support module, and base module of this utility model;

[0044] Figure 9 This is a schematic diagram of the reinforcing component structure of this utility model.

[0045] In the diagram, 1 is the load-bearing unit; 2 is the first component; 3 is the second component; 4 is the transverse connection subunit; 5 is the inclined connection subunit; 6 is the fixed subunit; 7 is the extension subunit; 8 is the thickened section; 9 is the reinforcing rib; 10 is the reinforcing ring; 11 is the reinforcement unit; 12 is the column; 13 is the sinking module; and 14 is the limiting module. Detailed Implementation

[0046] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0047] like Figure 1 As shown, this utility model proposes a marine photovoltaic foundation, including a base module and M support modules;

[0048] The base module is set on the seabed foundation to support M support modules; the base module can be a large, sturdy steel plate or concrete panel, the size and shape of which are determined according to the scale of the photovoltaic system to be supported and the conditions of the seabed foundation.

[0049] Preferably, in one embodiment, the base module includes a plurality of staggered stabilizing units; M support modules are respectively disposed at the corresponding intersections of the plurality of stabilizing units, and the two stabilizing units corresponding to each intersection are mortise and tenon connected to ensure that the base module is stably placed on the seabed foundation; the top of the base module is provided with a plurality of connection points for connecting with the support modules.

[0050] This invention significantly strengthens the foundation of the entire structure by setting the base module as multiple staggered stabilizing units and configuring support modules at the intersections of these stabilizing units. This design ensures that the photovoltaic foundation has greater resistance to wind, waves, and settling in the complex and ever-changing marine environment.

[0051] like Figure 2 As shown, the stabilizing unit includes a precast concrete strip-shaped first component 2 and a second component 3; the middle sections of the first component 2 and the second component 3 have two cubic slots, and the first component 2 and the second component 3 are connected by the slots with reference to the mortise and tenon structure.

[0052] The precast concrete component of this invention has a large bottom area, which can better distribute the load on the upper photovoltaic support to the foundation, making it suitable for foundations with poor geological conditions such as silt.

[0053] Each support module is connected to the base module and the photovoltaic bracket at both ends, and adjacent support modules are spaced apart by a first preset distance.

[0054] Each support module includes N load-bearing units 1 spaced at a second preset distance and multiple mesh connection units;

[0055] Preferably, each support module also includes a positioning unit;

[0056] The positioning unit is set between the N load-bearing units 1 and the photovoltaic bracket, and is used to connect the N load-bearing units 1 and the photovoltaic bracket.

[0057] Preferably, the positioning unit includes an extension subunit 7 and a fixed subunit 6 that are fixedly connected;

[0058] The extension subunit 7 is located on the side of the photovoltaic bracket facing the support module;

[0059] The fixed subunit 6 is connected to the side of the N load-bearing units 1 facing the photovoltaic bracket.

[0060] Both the extension subunit 7 and the fixing subunit 6 can be a single steel plate with bolt holes, and their dimensions and shapes are matched. The fixing subunit 6 is fastened to the extension subunit 7 using bolts and nuts, thereby securely fixing the photovoltaic bracket to the support module.

[0061] Preferably, N load-bearing units 1 are arranged around the extension subunit 7.

[0062] Each load-bearing unit 1 is connected to the base module and the photovoltaic bracket at both ends, respectively;

[0063] Each mesh connection unit is positioned between adjacent load-bearing units 1.

[0064] Each mesh connection unit includes multiple lateral connection subunits 4 and multiple inclined connection subunits 5;

[0065] Multiple horizontal sub-connecting units are spaced at preset heights and connected between adjacent load-bearing units 1, dividing load-bearing unit 1 into multiple load-bearing sections;

[0066] Multiple inclined connecting subunits 5 are staggered between each transverse connecting subunit 4. For example... Figure 1 As shown, the number of inclined connecting sub-units 5 and the number of horizontal connecting sub-units 4 can be the same or different, and there is no strict numerical correspondence. The inclined connecting sub-units 5 are arranged in an alternating manner between each horizontal connecting sub-unit 4, forming a stable triangular structure, which further improves the strength and stability of the support module.

[0067] In one embodiment, the support module is a jacket structure, with load-bearing unit 1 as the main rod. At a certain height, horizontal bars support the four main rods, and diagonal braces connect adjacent main rods on all four facades. The overall structure of the support module has fewer horizontal and diagonal braces in the same load-bearing section, facilitating manufacturing and ensuring sufficient strength.

[0068] like Figure 3 As shown, four cylindrical holes are provided in the middle of the slot in the second component 3. The diameter of these holes is slightly larger than the cross-section of the corresponding main rod. During installation, each main rod is inserted into the corresponding hole for a certain degree of fixation. The first component 2, however, has no holes to prevent the entire support module from sinking too deep into the foundation. The second component 3 has slots and holes, which provide positioning for the installation of the foundation and support module, facilitating assembly; the cylindrical holes can be formed during the prefabrication of components to enable mass production of components.

[0069] Furthermore, the fixed subunit 6 is a flat plate; the top of the support module is also equipped with four diagonal connecting rods extending to the flat plate. The top of the flat plate has a cylindrical slot and pre-embedded studs. When installing the upper bracket, the extension section of the upper bracket (i.e., the extension subunit 7) is inserted into the upper end of the flat plate and connected by bolts through a flange. Bolts can be used to connect the extension subunit of the upper bracket to the flange.

[0070] Preferably, each support module also includes N reinforcing units;

[0071] N reinforcing units are set at the preset height of the corresponding load-bearing unit 1.

[0072] Preferably, each reinforcing unit includes a thickened section 8 with openings at both ends, a reinforcing ring 10, and a reinforcing rib 9;

[0073] The thickened section 8 is wrapped around the preset height of the corresponding load-bearing unit 1;

[0074] The reinforcing ring 10 is fitted onto the corresponding load-bearing unit 1 and connected to one end of the thickened section 8;

[0075] One end of the reinforcing rib 9 is connected to the thickened section 8, and the other end is connected to the reinforcing ring 10. The thickened section 8 reinforces the load-bearing unit 1, while the reinforcing ring 10 and the reinforcing rib 9 form a stable triangular or trapezoidal support structure, effectively preventing deformation and instability of the support module.

[0076] like Figure 4 As shown, the lower section of the load-bearing unit 1 has a thickened section 8 of a certain length to prevent damage to the load-bearing unit 1 due to load. A reinforcing ring 10 is located in the middle of the thickened section 8, and reinforcing ribs 9 on the reinforcing ring 10 to prevent damage. The reinforcing ring 10 provides support for the load-bearing unit 1, preventing damage to the lower end of the load-bearing unit 1, and provides vertical positioning during installation to ensure the load-bearing unit 1 is properly installed.

[0077] Preferably, the offshore photovoltaic foundation also includes a sunken module 13;

[0078] The sinking module 13 is located on the side of the base module facing the ground and is used to sink into the seabed through the principle of negative pressure to provide stability for the base module.

[0079] like Figure 5 , Figure 6 In the illustrated embodiment, the sinking module 13 is a suction tank. First, four suction tanks are placed at predetermined positions on the seabed foundation. The diameter and height of these suction tanks are determined based on the seabed geological conditions and required stability. A drainage operation is performed through valves on the suction tanks to create a negative pressure environment inside. After drainage and confirmation that the suction tanks have stably sunk to the seabed, the precast concrete components (i.e., the base module) are accurately placed in place according to the positioning auxiliary plate.

[0080] Preferably, the offshore photovoltaic foundation also includes a limiting module 14;

[0081] like Figure 9 As shown, the limiting module 14 is disposed on the side of the sinking module 13 facing the base module to prevent relative displacement between the base module and the sinking module 13. In this embodiment, the limiting module 14 consists of four opposing limiting blocks, with the distance and angle between the limiting blocks designed to accommodate the corresponding stabilizing unit. The limiting module 14 ensures precise alignment between the base module and the suction barrel. This design helps reduce safety hazards caused by structural loosening or deformation, improving the overall performance and safety of the photovoltaic system.

[0082] This invention introduces a sinking module 13, which utilizes the principle of negative pressure to enable the base module to sink smoothly into the seabed. This not only simplifies the installation process but also improves the accuracy and efficiency of the installation. The close cooperation between the sinking module 13 and the base module ensures the stable positioning of the photovoltaic foundation on the seabed and avoids the risk of displacement caused by water erosion or geological changes.

[0083] The following is another embodiment of this utility model, such as... Figure 7 , Figure 8 As shown, the difference from the above embodiment is that the support module is a column 12, and the base module also includes M reinforcing units 11;

[0084] Each reinforcement unit 11 is disposed between the corresponding support module and the stabilizing unit.

[0085] like Figure 9 As shown, the reinforcing unit 11 is a steel reinforcing component. The diameter of the circular hole in each reinforcing component is slightly larger than that of the corresponding support module. During installation, it is fitted onto the corresponding support module and lowered onto the upper surface of the precast second component 3. Grouting is performed at the gaps to ensure that all parts are tightly connected. This operation ensures that the support module will not come out when subjected to vertical loads and helps the support module resist horizontal loads.

[0086] The four reinforcing legs of the reinforcement are inserted at the angle between the first component 2 and the second component 3, which can strengthen the connection between the concrete component and the support module.

[0087] The addition of each reinforcement unit 11 further enhances the connection between the support module and the stabilizing unit, improving the stability and durability of the overall structure.

[0088] Compared with the prior art, the present invention has the following beneficial effects:

[0089] (1) The present invention sets the support module into multiple load-bearing units and sets a mesh connection unit between adjacent load-bearing units. Through the cooperation of multiple load-bearing units and mesh connection units, the pressure on the support module is dispersed, and the stability of the photovoltaic foundation is enhanced.

[0090] (2) The present invention sets up a mesh connection unit between adjacent load-bearing units to enhance the stability of the photovoltaic foundation while reducing its weight;

[0091] (3) By introducing a positioning unit, this utility model achieves precise connection between N load-bearing units and the photovoltaic bracket, which not only ensures the simplicity and accuracy of the installation process, but also significantly improves the stability and connection strength of the entire structure. This helps to resist the influence of external environmental factors (such as wind pressure, snow load, etc.) on the photovoltaic system and ensures the safety and reliability of long-term operation;

[0092] (4) This utility model achieves a reasonable layout and force distribution of the load-bearing unit by setting the extension sub-unit and the fixing sub-unit in the positioning unit on the photovoltaic bracket and the load-bearing unit respectively. This design can ensure that each load-bearing unit can effectively bear the weight of the photovoltaic module and the external force generated, and avoid structural damage or performance degradation caused by uneven force. The design of the positioning unit and the reinforcing unit makes installation and maintenance more convenient and efficient, and reduces the difficulty and time cost of on-site construction.

[0093] (5) This utility model significantly improves the load-bearing capacity of the load-bearing unit by adding N reinforcing units to the support module, especially by utilizing a combination structure of thickened sections, reinforcing rings, and reinforcing ribs. These reinforcing units can distribute and bear a larger load, ensuring the safe operation of the photovoltaic system under extreme weather conditions;

[0094] (6) By optimizing the configuration of the stabilizing unit, the support module and the reinforcement unit, this utility model can adapt to complex environments such as different water depths and different wave conditions.

[0095] The above description is merely a few embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and all fall within the scope of the technical solution.

Claims

1. Offshore photovoltaic foundation, characterized in that, The base module and M support modules are included; The base module is arranged on the foundation of seabed, used for carrying the M support modules; The base module includes a plurality of stable units arranged staggeredly; The M support modules are arranged at corresponding intersection points of the plurality of stable units respectively, and the corresponding two stable units at each intersection point are connected by mortise and tenon joint; Two ends of each support module are connected with the base module and photovoltaic support respectively, and adjacent support modules are spaced by a first preset distance; Each support module includes N bearing units arranged at a second preset distance and a plurality of net-shaped connection units; Two ends of each bearing unit are connected with the base module and photovoltaic support respectively; Each net-shaped connection unit is arranged between adjacent bearing units.

2. Offshore photovoltaic foundation according to claim 1, characterized in that, Each support module further includes a positioning unit; The positioning unit is arranged between the N bearing units and the photovoltaic support, used for connecting the N bearing units and the photovoltaic support.

3. The offshore photovoltaic foundation according to claim 2, characterized in that, The positioning unit includes a fixedly connected extension subunit and a fixed subunit; The extension subunit is arranged on a side of the photovoltaic support facing the support module; The fixed subunit is connected to a side of the N bearing units facing the photovoltaic support.

4. The offshore photovoltaic foundation according to claim 3, characterized in that, The N bearing units are arranged around the extension subunit.

5. The offshore photovoltaic foundation of claim 1, wherein, Each support module further includes N reinforcing units; The N reinforcing units are arranged at a preset height of the corresponding bearing unit.

6. The offshore photovoltaic foundation according to claim 5, characterized in that, Each reinforcing unit includes a thickened section with two open ends, a reinforcing ring and a reinforcing rib; The thickened section is wrapped at the preset height of the corresponding bearing unit; The reinforcing ring is sleeved on the corresponding bearing unit and connected with one end of the thickened section; One end of the reinforcing rib is connected with the thickened section, and the other end is connected with the reinforcing ring.

7. Offshore photovoltaic foundation according to any of claims 1-6, characterized in that, Further including a sinking module; The sinking module is arranged on a side of the base module facing the foundation, used for sinking into the seabed by negative pressure principle to provide stability for the base module.

8. The offshore photovoltaic foundation of claim 7, wherein, Further including a limiting module; The limiting module is arranged on a side of the sinking module facing the base module, used for preventing relative displacement of the base module and the sinking module.

Images