CN219635449U - Anti-ice self-climbing floating type offshore photovoltaic structure - Google Patents

Abstract

The utility model provides an anti-ice self-climbing floating type offshore photovoltaic structure, which comprises a floating type structural unit and a photovoltaic array arranged above the floating type structural unit; the floating type structural unit comprises a floating type foundation, a truss structure and an anchoring system for flexibly connecting the floating type structural unit with a seabed mud surface; the bottom of the truss structure is provided with a support leg part, the support leg part is connected with the upper part of the floating foundation, and the cross-sectional area of the top of the floating foundation is larger than the cross-sectional area of the bottom of the floating foundation which is submerged in the sea; the floating type offshore photovoltaic structure provided by the utility model has the characteristics of strong wind wave resistance and ice resistance under severe sea conditions, and simultaneously has the bottom-sitting capacity, so that the floating type offshore photovoltaic structure is suitable for shallow water tidal range sea areas which are easy to sit, the reliability of the structure is improved, the stability of the movement of the structure is ensured, and the risk is further reduced.

Description

Anti-ice self-climbing floating type offshore photovoltaic structure

Technical Field

The utility model relates to the technical field of offshore photovoltaic power generation, in particular to an anti-ice self-climbing floating type offshore photovoltaic structure.

Background

With the continuous development of the photovoltaic industry in China, the industries of land photovoltaic and water photovoltaic (lakes, reservoirs, rivers, shoals, gulfs and the like) are becoming mature. While Liu Shangguang volt power stations require a large amount of land for large-scale construction, in the middle eastern region, proper land resources are very short, water photovoltaics which occupy less land resources are emerging as photovoltaic power stations, and are widely focused in the industry in recent years, and offshore photovoltaics have wider water surface spaces than lakes, reservoirs and the like, and have wide development prospects.

The water photovoltaic is divided into floating water photovoltaic and piling water photovoltaic, when the water depth of a water area is deep, the water level change amplitude is large, the water bottom geology is unstable, the construction cost and the construction cost of the piling water photovoltaic can be increased sharply, and the floating water photovoltaic is more advantageous. At present, floating type photovoltaic power station construction on water is mainly concentrated in lakes, reservoirs, rivers, gulfs and other water areas protected by wave-preventing measures, the floating body structure is formed by adopting HDPE (high-strength polyethylene, high Density Polyethylene) in a blow molding mode, the floating body has shallow draft and a topside bottom, and the floating body is only suitable for sea areas with wave heights smaller than 1m for preventing wave attack on photovoltaic modules, however, the floating body material is weak in strength and difficult to resist the action of floating ice.

Therefore, the traditional HDPE floating type photovoltaic structure has a small application range aiming at marine environments under various conditions, can not resist severe sea conditions under the change of stormy waves, and is more inapplicable especially for areas with sea ice on the sea surface. In order to ensure the safety and risk problems of the photovoltaic structure during offshore operation, the simple and reliable floating type offshore photovoltaic structure is particularly important.

Disclosure of Invention

The utility model aims to provide a floating type offshore photovoltaic structure which is suitable for various sea conditions and has the capability of resisting wind waves and ice.

For this purpose, the utility model adopts the following technical scheme:

an anti-ice self-climbing floating offshore photovoltaic structure comprises a floating structural unit and a photovoltaic array arranged above the floating structural unit; the floating type structural unit comprises a floating type foundation, a truss structure and an anchoring system for flexibly connecting the floating type structural unit with a seabed mud surface; the bottom of the truss structure is provided with a support leg part, and the support leg part is connected with the upper part of the floating foundation, so that an anti-ice space is formed outside the floating foundation in a surrounding manner; the cross-sectional area of the top of the floating foundation is larger than that of the bottom of the floating foundation, so that a smooth transition ice climbing part is formed on the outer surface between the top and the bottom of the floating foundation; the bottom of the floating foundation forms an anti-icing portion that mates with the climbing portion thereon.

Further: the outer surface of the floating foundation is surrounded with an outer plate, the top and the bottom of the floating foundation are respectively provided with a top plate and a bottom plate, and the floating foundation is internally sealed by connecting the outer plate with the top plate and the bottom plate.

Further: and a supporting framework is arranged in the floating foundation.

Further: the truss structure lays the upper structure of the photovoltaic array with an inclination angle.

Further: the cross-sectional area of the top of the supporting leg part of the truss structure is larger than that of the bottom of the supporting leg part, so that the outer surface between the top and the bottom of the supporting leg part can be matched with the climbing ice part to form a transitional extension ice-driving part.

Further: a frame part is arranged at the joint of the truss structure and the photovoltaic array; a plurality of inhaul cables and connecting buckles which are in clamping fit with the inhaul cables are paved and connected in the frame part; the connecting buckle is connected with the bottom of the photovoltaic panel of the photovoltaic array, and the adjacent inhaul cable is matched with the connecting buckle to form a supporting state of the photovoltaic panel.

Further: and a bracket is connected between the connecting buckles on the adjacent inhaul cables.

Further: the floating structural unit can be suitable for the sea area with shallow water tidal range and large easy beach; the bottom of the floating foundation is a flat bottom surface, so that the floating foundation can form a sitting bottom state with the beach.

Further: a plurality of the floating structural units may be in an independent anchoring arrangement at the target sea area, or in a connected array anchoring arrangement.

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

the floating type offshore photovoltaic structure provided by the utility model has the characteristics of strong wind wave resistance and ice resistance under severe sea conditions, and simultaneously has the bottom-sitting capacity, so that the floating type offshore photovoltaic structure is suitable for a sea area with a shallow water tidal range and a large easy beach, the reliability of the structure is improved, the stability of the movement of the structure is ensured, and the risk is further reduced. Meanwhile, under the service working condition, the whole structure has small facing area and strong capability of resisting the wind, wave and current loads of the marine environment.

And secondly, the utility model realizes the optimization of the structural size, weight and arrangement of the photovoltaic module according to the utilization area of the steel truss structure under the condition of ensuring the installation of the photovoltaic module by the light-weight upper structure of the steel truss structure, thereby reducing the construction cost, realizing the saving of sea and further increasing the economy.

And thirdly, the floating type offshore photovoltaic structure has various and flexible arrangement modes according to the generation scale and the field space of the offshore photovoltaic field, the floating type offshore photovoltaic structure is flexibly combined into various photovoltaic arrays, and an anchoring system can be flexibly arranged according to the photovoltaic arrays so as to maintain the optimal photovoltaic generation efficiency of the photovoltaic arrays.

And fourthly, the elastic rope mooring system of the utility model enables the floating foundation to be suitable for sea areas with large shallow water tide and ensures the safety and reliability of the shallow water mooring system.

And fifthly, the large-span truss structure reduces the weight of the whole truss structure, thereby improving the offshore construction efficiency and reducing the offshore construction operation cost and risk.

Drawings

FIG. 1 is a schematic view of the overall structure of a floating structural unit of the present utility model;

FIG. 2 is a schematic view of the exterior and interior construction of the floating foundation of the present utility model;

FIG. 3 is a schematic view of the truss structure of the present utility model;

FIG. 4 is a schematic diagram of the structure of the photovoltaic panel and the inhaul cable of the present utility model;

FIG. 5 is a schematic view of the structure of the bracket of the present utility model;

FIG. 6 is a schematic view of the principle of ice resistance of the floating structural unit of the present utility model;

FIG. 7 is a towing schematic of a floating structural unit of the present utility model;

FIG. 8 is a schematic diagram of an arrangement of floating structural units according to the present utility model;

fig. 9 is a schematic view of the connector structure of the second arrangement of fig. 8 according to the present utility model.

The marks in the drawings are: the floating type structure unit a, the floating type foundation 1, the outer plate 11, the supporting framework 12, the connecting cable points 13, the truss structure 2, the stay cables 21, the brackets 22, the connecting buckles 23, the support leg parts 24, the anchoring cables 3, the anchor point foundation 4, the photovoltaic array 5, the photovoltaic panel 51, the connector 6, the spherical hinge support 61, the connecting rods 62, the connecting springs 63 and the connecting cables 7.

Detailed Description

The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.

As shown in fig. 1-9, an anti-ice self-climbing floating offshore photovoltaic structure comprises a floating structural unit a, and a photovoltaic array 5 arranged above the floating structural unit a; the floating structure unit a comprises a floating foundation 1, a truss structure 2 and an anchoring system for flexibly connecting the floating structure unit a with the seabed mud surface; the bottom of the truss structure 2 is provided with a support leg part 24, and the support leg part 24 is connected with the upper part of the floating foundation 1, so that an ice-resistant space is formed outside the floating foundation 1; the cross section area of the top of the floating foundation 1 is larger than that of the part of the floating foundation, so that the outer surface between the top and the bottom of the floating foundation 1 forms a smooth transition ice climbing part; the bottom of the floating foundation 1 forms an anti-ice portion that mates with the climbing ice portion thereon.

In this embodiment, the number of the floating foundation 1 and the number of the leg portions 24 matched with the floating foundation are four, and the outer shape of the truss structure 2 is rectangular, and the leg portions 24 are disposed at the end portions of the truss structure 2. The leg portions 24 are vertically provided above the floating foundation 1 along the center of the floating foundation 1.

As shown in fig. 1, the cross-sectional area of the top of the leg portion 24 of the truss structure 2 is greater than the cross-sectional area of the bottom thereof, such that the outer surface between the top and bottom of the leg portion 24 may cooperate with the ice-climbing portion to form a transitional extended ice-displacement portion.

As shown in fig. 1 and 3, in this embodiment, the truss structure 2 is a large-span frame structure, and is formed by welding a plurality of small-diameter round steel pipes, and the leg portions 24 are also formed by encircling the round steel pipes, so that the round steel pipes on the leg portions 24 are smoothly connected with the outer surface of the outer plate 11, and the ice resistance of the floating structural unit a can be further enhanced.

As shown in fig. 1-2, an outer plate 11 is arranged around the outer surface of the floating foundation 1, a top plate and a bottom plate are respectively arranged at the top and the bottom of the floating foundation 1, and the floating foundation 1 is internally sealed by connecting the outer plate 11 with the top plate and the bottom plate. The top plate and the bottom plate are both sealing plates, so that a closed space is formed inside the floating foundation 1 to serve as a floating foundation.

As shown in fig. 2, a support frame 12 is provided in the floating foundation 1. The support frame 12 internally reinforces the floating foundation 1 so that the floating foundation 1 can withstand the weight of the truss structure 2 and the impact of sea ice moving with sea water.

As shown in fig. 1-2, in this embodiment, the floating foundation 1 has a truncated cone structure with a large top and a small bottom, and the outer plate 11 forms a smooth transition in all aspects, so that the acting force on sea ice can be reduced when the floating foundation contacts the sea ice, and therefore, an included angle exists between the side wall of the floating foundation 1 and the sea level, and the included angle ranges from 45 degrees to 70 degrees for good ice resistance. As shown in fig. 6, when the sea ice is contacted with the sea ice, the sea ice can slide into the water along the side wall of the outer plate 11, the side of the floating structural unit a contacted with the sea ice can be lifted by the sea ice, so that the acting force of the sea ice on the floating foundation 1 can be reduced, and in the process that the sea ice moves towards the center of the bottom of the floating structural unit a along with the sea water flow, the sea ice stretches into too much part to be tilted due to the contact with the floating foundation 1, and meanwhile, the tilted part of the sea ice is broken under the action of the pulling of the mooring cable 3 and the gravity of the floating structural unit a, so that the autonomous ice resisting effect of the floating structural unit a is achieved.

Wherein, the floating structural unit a can be suitable for the sea area of the shallow water tidal range large and easy to be beaten; the bottom of the floating foundation 1 is a flat bottom surface, and in shallow water with great change of tide level, the floating structural unit a can form a sitting bottom state with a beach through the floating foundation 1.

As shown in fig. 3-5, the truss structure 2 is provided with a frame portion at the junction with the photovoltaic array 5; a plurality of inhaul cables 21 are paved and connected in the frame part, and connecting buckles 23 which are in clamping fit with the inhaul cables 21 are arranged in the frame part; the connecting buckle 23 is connected with the bottom of the photovoltaic panel 51 of the photovoltaic array 5, and the adjacent guy ropes 21 are matched with the connecting buckle 23 to form a supporting state of the photovoltaic panel 51.

Wherein, a bracket 22 is connected between the connecting buckles 23 on the adjacent inhaul cables 21. The plurality of connecting buckles 23 are arranged around the bottom of the single photovoltaic panel 51, and the supporting points on four corners of the photovoltaic panel 51 are optimally provided for the photovoltaic panel 51 through the connecting buckles 23. The single photovoltaic panel 51 connects the two ends of the connecting buckle 23 through the brackets 22 on the adjacent inhaul cables 21, and the axial direction of the brackets 22 is perpendicular to the axial direction of the inhaul cables 21, and the height difference exists between the brackets 22 and the inhaul cables 21.

As shown in fig. 4-5, in this embodiment, a plurality of cables 21 are arranged and distributed in the frame portion, and the arrangement distance between adjacent cables 21 is the distance that can be matched with the photovoltaic panel 51 through the bracket 22, if the dimensions of the photovoltaic panel 51 are consistent, the arrangement distance between the cables 21 is optimally consistent, and the cables 21 are elastic cables, so as to ensure that the superstructure is light enough. Because the frame structure is light in weight and the available area of the upper structure is large, the unfolding size of the truss structure 2 can be flexibly designed according to the single size and the arrangement number of the photovoltaic panels 51, and the optimization of the size and the weight of the truss structure 2 and the arrangement of the photovoltaic modules 5 is realized, so that the construction cost is reduced, and the sea saving is realized.

The support 22 adopts a C-shaped steel structure, and the photovoltaic panel 51 is arranged above the inhaul cable 21 through the cooperation of the support 22 and the bottom of the photovoltaic panel 51. The connecting buckle 23 is provided with a first connecting piece and a second connecting piece which can be matched in a split way, and the first connecting piece and the second connecting piece are fixedly connected or separated from the inhaul cable 21 through clamping fit.

In this embodiment, the cable 21 is pre-tensioned during installation, so as to ensure that the cable has sufficient rigidity, and can effectively avoid shaking and wind-induced vibration caused by movement of the lower floating body. The tension monitor and tensioner are installed on the connection section of the stay cable 21 with the truss structure 2, and when the tension is monitored to be small during operation and maintenance, the operation and maintenance personnel can re-tension the stay cable 21.

As shown in fig. 1-3, the upper structure of the truss structure 2, which lays the photovoltaic array 5, has an inclination angle. Furthermore, the photovoltaic panel 51 can be fully laid on the surface of the truss structure 2, so that the problem that the distance is additionally increased due to shielding caused by the inclination angle needs to be avoided when the conventional photovoltaic is paved is avoided, and the generated energy of the photovoltaic array 5 is increased.

As shown in fig. 1, the mooring system comprises a mooring line 3 and an anchor foundation 4 driven into the mud surface of the sea floor; the outer plate 11 of the floating foundation 1 is provided with a cable connection point 13 to which the mooring cable 3 is connected. The anchor point foundation 4 adopts a steel pipe pile.

In this embodiment, the mooring cable 3 uses an elastic cable to provide a restoring force of the photovoltaic array 5 under the operation condition, and the floating structural unit a is suitable for the sea area with large shallow water tide by the reserved length of the mooring cable 3 and the elastic expansion and contraction capability of the elastic cable, so as to ensure the safety and reliability of the mooring system. The elastic rope of the mooring line 3 has enough strength to resist the pushing force of ice or cut off the ice surface when being acted on by sea ice. The proper anchoring mode can be flexibly selected according to the sea condition, the floating foundation 1 and the stress condition of the photovoltaic array 5 formed on the floating foundation 1, wherein the anchoring mode comprises a towing anchor, a suction anchor, a concrete gravity anchor, a pile anchor and the like.

As shown in fig. 8, a plurality of floating structural units a have a variety of arrangements, including individual mooring arrangements that can be in the target sea area, as well as connected array mooring arrangements. The specific anchoring arrangement is as follows:

in the arrangement mode (I), the four-point distribution anchors of the single floating structural unit a are independently arranged;

in the arrangement mode (II), a plurality of floating structural units a form an array, the adjacent floating structural units a are connected by connectors 6 or cables 7, and an anchoring system is arranged at the periphery of the array;

in the arrangement mode (III), the single floating structural unit a is anchored at four points and shares an anchoring foundation 4 with the adjacent units.

As shown in fig. 8 and 9, in the arrangement (two), the connector 6 between the floating structural units a includes a spherical hinge support 61 and a mating member; the spherical hinge brackets 61 are provided at end point portions of the adjacent floating structural units a in pairs; the spherical hinge supports 61 on the two sides are connected through the matching piece; the mating member adopts a connecting rod 62 or a connecting spring 63. Under the matching form of the spherical hinge support 61 and the connecting rod 62, the spherical hinge support 61 ensures that the heave between the floating structural units a can move freely, and the connecting rod 62 ensures the relative distance between the floating structural units a; in the form of the cooperation of the spherical hinge support 61 and the connecting spring 63, the spherical hinge support 61 ensures the freedom of the heave movement between the floating structural units a, and the connecting spring 63 ensures the flexibility of the horizontal movement between the floating structural units a.

Referring to fig. 1-9, in the offshore construction installation and operation of a floating offshore photovoltaic structure, the specific manner and steps are as follows:

s1: the construction of the floating foundation 1 and the truss structure 2 is accomplished separately and solely on land;

s2: the construction of an anchoring system is carried out in advance in the target sea area, and the connection between an anchoring cable 3 and an anchor position buoy on an anchor point foundation 4 is completed;

s3: after the construction is completed, the wharf is hoisted, closed and welded by a portal crane, and then the installation and the debugging of the photovoltaic array 5 at the upper part of the truss structure 2 are carried out, so that the land integral assembly mode is adopted, the offshore operation time is shortened, the construction period is shortened, and the offshore construction operation efficiency is improved; then the combined floating structural unit a is hoisted to a port by a portal crane and is put down in sea water or hoisted to a deck barge; meanwhile, after the assembly in the dock is completed, the whole tug is wet-towed to the offshore construction site, and a large barge and a ship lifting machine are not required to be dispatched, so that the cost and risk of the offshore construction operation are greatly reduced; under the wet towing installation working condition, the horizontal span of the whole structure is large, the restoring moment is large, and the wet towing installation working condition has better stability;

s4: a construction site transported to a target sea area by a deck barge: the towing operation of this embodiment is shown in fig. 7, in which the floating structure unit a floats on the water surface through the floating foundation 1, and the floating structure unit a is towed by the towing vessel, so that the site construction is performed from the port to the offshore operation site;

s5: the construction arrangement is carried out according to the selected arrangement mode of the floating structural unit a, and after the floating structural unit a is transported to the installation position, the floating structural unit a is installed through completing the connection between the connecting cable points 13 of the floating structural unit a and the anchoring cables 3 on the anchor position buoy;

s6: the photovoltaic panels 51 are arranged on the frame structure through the buckles 23, the photovoltaic array 5 is installed, and under the service working condition, the whole structure has small facing area and strong capability of resisting the ocean environment wind, wave and current loads.

The above embodiment is only one preferred technical solution of the present utility model, and it should be understood by those skilled in the art that modifications and substitutions can be made to the technical solution or parameters in the embodiment without departing from the principle and essence of the present utility model, and all the modifications and substitutions are covered in the protection scope of the present utility model.

Claims (9)

1. An anti-ice self-climbing floating offshore photovoltaic structure comprising a floating structural unit (a), and a photovoltaic array (5) arranged above the floating structural unit (a); the method is characterized in that: the floating structural unit (a) comprises a floating foundation (1) and a truss structure (2), and an anchoring system for flexibly connecting the floating structural unit (a) with a seabed mud surface;

the bottom of the truss structure (2) is provided with a support leg part (24), and the support leg part (24) is connected with the upper part of the floating foundation (1);

the cross-sectional area of the top of the floating foundation (1) is larger than that of the bottom of the floating foundation, so that a smooth transition ice climbing part is formed on the outer surface between the top and the bottom of the floating foundation (1);

the bottom of the floating foundation (1) forms an anti-icing part which is matched with the climbing part on the floating foundation.

2. An anti-ice self-climbing floating offshore photovoltaic structure according to claim 1, wherein: the outer surface of the floating foundation (1) is surrounded by an outer plate (11), the top and the bottom of the floating foundation (1) are respectively provided with a top plate and a bottom plate, and the floating foundation (1) is internally sealed by connecting the outer plate (11) with the top plate and the bottom plate.

3. An anti-ice self-climbing floating offshore photovoltaic structure according to claim 1, wherein: a supporting framework (12) is arranged in the floating foundation (1).

4. An anti-ice self-climbing floating offshore photovoltaic structure according to claim 1, wherein: the upper structure of the truss structure (2) is provided with an inclination angle for arranging the photovoltaic array (5).

5. An anti-ice self-climbing floating offshore photovoltaic structure according to claim 1, wherein: the cross-sectional area of the tops of the leg portions (24) of the truss structure (2) is larger than that of the bottoms thereof, so that the outer surfaces between the tops and the bottoms of the leg portions (24) can be matched with the climbing ice portion to form a transitional extension ice-driving portion.

6. An anti-ice self-climbing floating offshore photovoltaic structure according to claim 1, wherein: a frame part is arranged at the matching position of the truss structure (2) and the photovoltaic array (5); a plurality of inhaul cables (21) and connecting buckles (23) which are in clamping fit with the inhaul cables (21) are paved and connected in the frame part; the connecting buckle (23) is connected with the bottom of the photovoltaic panel (51) of the photovoltaic array (5), and the adjacent inhaul cables (21) are matched with the connecting buckle (23) to form a supporting state for the photovoltaic panel (51).

7. The anti-ice self-climbing floating offshore photovoltaic structure according to claim 6, wherein: a bracket (22) is connected between the connecting buckles (23) on the adjacent inhaul cables (21).

8. An anti-ice self-climbing floating offshore photovoltaic structure according to claim 1, wherein: the floating structural unit (a) can be suitable for the sea area with shallow water tidal range and large easy beach; the bottom of the floating foundation (1) is a flat bottom surface, so that the floating foundation can form a sitting bottom state with a beach.

9. An anti-ice self-climbing floating offshore photovoltaic structure according to claim 1, wherein: a plurality of said floating structural units (a) may be in an independent anchoring arrangement at the target sea area, as well as in a connected array anchoring arrangement.