CN218477610U - Three-column semi-submersible offshore photovoltaic supporting system with outward-expanded platform - Google Patents

Abstract

The utility model provides a three-column semi-submersible offshore photovoltaic support system with an externally expanded platform, which comprises an offshore photovoltaic support platform and an anchoring system for connecting the offshore photovoltaic support platform with a seabed mud surface, wherein the offshore photovoltaic support platform comprises a semi-submersible floating body and a photovoltaic platform which is arranged on the semi-submersible floating body and bears a photovoltaic array; the bottom of the semi-submersible floating body is provided with a lower floating barrel; connecting floating cylinders are connected between the adjacent lower floating cylinders, and a triangular main buoyancy chassis part is formed by connecting the connecting floating cylinders and the lower floating cylinders; the main buoyancy chassis part is vertically extended from the upper part of the lower buoy at the end point of the main buoyancy chassis part and is provided with a stand column; ballast tanks are arranged in the lower buoy, the connecting buoy and the upright post; the utility model discloses a sufficient surface of water buoyancy and intensity have to through to its inside additional strengthening design, greatly strengthened abominable marine environment's adaptability.

Description

Three-column semi-submersible offshore photovoltaic supporting system with outward-expanded platform

Technical Field

The utility model relates to a marine photovoltaic power generation technical field, concretely relates to three stand semi-submerged marine photovoltaic braced systems of platform expand outward.

Background

Offshore photovoltaic is an important new field for new energy development, and has the advantages of large development potential, high comprehensive benefit and environmental friendliness. China has wide sea area and abundant ocean solar energy resources, and offshore photovoltaics will become the main battlefield in the future. At present, however, the support form of the offshore photovoltaic is mainly a fixed type, a prestressed concrete pipe pile is driven into a seabed mud surface, and a photovoltaic plate is fixed through a support on the pipe pile. The fixed offshore photovoltaic technology is relatively mature, and is already built and applied in saline-alkali soil, mudflat and offshore areas. With the continuous development of offshore photovoltaics to the middle and far seas, the fixed photovoltaic form can not meet the requirements, and the floating offshore photovoltaics are not limited by the depth of water and become the key direction of future development.

For example, patent No. (CN 208046527U) discloses a floating body structure form of an air cushion with a built-in elastic buffer as a floating photovoltaic bracket, which can play a role in buffering when wave heights on the left and right sides of a surge under the air cushion are different. Disclose a pin-connected panel marine photovoltaic power generation platform like patent No. (CN 109178227A), its bearing structure is reinforced concrete case, can realize that land prefabricates in batches, marine integration haulage is assembled. For example, patent No. (CN 113349129A) discloses a flexible assembly type offshore photovoltaic power generation and aquaculture net cage comprehensive development platform, adopts the array structure of little unit concatenation, possesses certain unrestrained ability of disappearing. However, the photovoltaic capacity of the device and the method is not large, and the structural strength under severe wind, wave and current sea conditions is uncertain.

Because the inland water surface photovoltaic is relatively stable in environment, the storm flow condition in the marine environment is severe, and the floating photovoltaic can not directly move the inland water surface photovoltaic scheme, the difficulty of the supporting structure system design is how to adapt to the severe marine environment, and the problem of how to ensure the photovoltaic array in the environment with any water depth and prevent the power generation influence of the sea water storm on the photovoltaic array is solved under the severe storm flow condition, and the problem of how to improve the power generation capacity of the photovoltaic array on the platform is also the problem that needs to be solved in the marine photovoltaic power generation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can guarantee that structural strength is reliable and use in the environment of arbitrary depth of water, prevent the sea water unrestrained semi-submerged formula marine photovoltaic braced system.

Therefore, the utility model adopts the following technical scheme:

a three-column semi-submersible offshore photovoltaic support system with an outward-extended platform comprises an offshore photovoltaic support platform and an anchoring system for connecting the offshore photovoltaic support platform with a seabed mud surface, wherein the offshore photovoltaic support platform comprises a semi-submersible floating body and a photovoltaic platform which is arranged on the semi-submersible floating body and bears a photovoltaic array; the bottom of the semi-submersible floating body is provided with a lower floating barrel; connecting floating cylinders are connected between the adjacent lower floating cylinders, and a triangular main buoyancy chassis part is formed by connecting the connecting floating cylinders and the lower floating cylinders; the main buoyancy chassis part is vertically extended from the upper part of the lower buoy at the end point of the main buoyancy chassis part and is provided with a stand column; ballast tanks are arranged in the lower buoy, the connecting buoy and the upright column, and the draft state and the buoyancy state of the semi-submersible floating body are adjusted by injecting and discharging seawater into and from the ballast tanks; a reinforcing structure is arranged in the semi-submersible floating body; the photovoltaic platform is arranged on the stand column, an outward-expanding connecting structure is arranged between the semi-submersible type floating body and the photovoltaic platform, and the outline of the photovoltaic platform is in an outward-expanding connecting state through the outward-expanding connecting structure.

And further: the reinforcing structure comprises a vertical column reinforcing frame arranged inside the vertical column, and the ballast tank in the vertical column is divided into a plurality of independent ballast tank cabins through the vertical column reinforcing frame.

Further: the additional strengthening is including setting up the inside flotation pontoon Framing of connecting the flotation pontoon, through the flotation pontoon Framing will in the connecting the flotation pontoon the ballast tank separates for a plurality of independent ballast tank cabins.

And further: and an upright post support rod is connected between the lower buoy or the upright post and the photovoltaic platform.

And further: the external expansion connecting structure comprises an external expansion inclined strut connected between the connecting floating barrel and the photovoltaic platform.

And further: the stand axis or with coaxial setting between the lower flotation pontoon axis, or with be outer form contained angle that expands between the lower flotation pontoon axis, the stand top court the outside direction of photovoltaic platform extends, increases the bearing area of photovoltaic platform.

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

the utility model has enough water surface buoyancy and strength for the offshore photovoltaic array, and greatly enhances the adaptability of severe marine environment by designing the internal reinforced structure; secondly, the ballast tank in the supporting system can meet the draft requirement of the photovoltaic supporting system in the processes of consignment, installation and operation by adjusting the ballast capacity, and can prevent seawater from rising; and the area of the photovoltaic platform is far larger than the marine projection area formed by the lower buoy and the connecting buoy in a mode of outward expansion of the platform, so that the platform has a larger area for array photovoltaic use, and the photovoltaic array is arranged by utilizing the characteristic that the semi-submersible floating body has a large inclination angle, so that the power generation capacity of a single photovoltaic support system is further improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a stress schematic view of the semi-submersible offshore photovoltaic support system provided by the present invention;

fig. 3 is a schematic view of the overall structure of the offshore photovoltaic support platform of the present invention;

FIG. 4 is a schematic view of the semi-submersible hull portion of the present invention;

FIG. 5 is a perspective view of the internal structure of the semi-submersible floating body part;

FIG. 6 is a schematic structural view of the column reinforcing frame of the present invention;

FIG. 7 is a schematic view of the structure of the reinforcing frame of the float bowl of the present invention;

fig. 8 is a schematic layout of the photovoltaic platform and array according to the present invention.

The labels in the figures are: 1-jacking the bolt; 2-fastening bolts; 3, pressing a plate; 31-a visor portion; 32-a cap top portion; 33-counterbores; 34-bolt holes; 35-a through hole; 4-a pressure-bearing bolt; 41-a pressure-bearing portion; 5-a drainage cone; 6-rotating wheel; 7-a rotating wheel main shaft; 701-main shaft head.

Detailed Description

The present invention will be further described with reference to the drawings and examples, which should not be construed as a limitation to the present invention.

As shown in fig. 1-8, a three-column semi-submersible offshore photovoltaic support system with extended platform comprises an offshore photovoltaic support platform and an anchoring system for connecting the offshore photovoltaic support platform with a seabed mud surface, wherein the offshore photovoltaic support platform comprises a semi-submersible floating body 1 and a photovoltaic platform 16 arranged on the semi-submersible floating body 1 and used for bearing a photovoltaic array 19; the bottom of the semi-submersible floating body 1 is provided with a lower buoy 11; a connecting buoy 13 is welded between the adjacent lower buoys 11, and a triangular main buoyancy chassis part is formed by connecting the connecting buoy 13 and the lower buoys 11; the main buoyancy chassis part is vertically extended from the upper part of a lower buoy 11 at the end point of the main buoyancy chassis part and is provided with a vertical column 12; ballast tanks are arranged in the lower buoy 11, the connecting buoy 13 and the upright post 12, the draft state and the buoyancy state of the semi-submersible floating body 1 are adjusted by injecting and discharging seawater into and from the ballast tanks, and the floating height of one side of the semi-submersible floating body 1 on the sea can be adjusted by the ballast tanks, so that the photovoltaic array 19 is arranged by utilizing the characteristic that the semi-submersible floating body 1 has a large inclination angle, and the power generation amount of the photovoltaic array 19 is improved; a reinforcing structure is arranged in the semi-submersible floating body 1, and the reinforcing structure can independently separate the ballast tank; photovoltaic platform 16 sets up on stand 12, sets up outer expanding connection structure between semi-submerged body 1 and the photovoltaic platform 16, is outer expanding connection state to the photovoltaic platform outline through outer expanding connection structure, and the bearing area of laying photovoltaic array 19 on the photovoltaic platform 16 is greater than the cross sectional area that semi-submerged body 1 encloses to establish and form.

In this embodiment, the number of the lower float 11, the connecting float 13 and the upright post 12 is three, and the lower float 11 makes the main buoyancy chassis part better enclose an equilateral triangle structure form through the connection of the connecting float 13, and the main buoyancy chassis part has higher support strength due to the equilateral triangle structure. Meanwhile, the cross-sectional area of the lower buoy 11 is larger than the cross-sectional area of the upright 12, so that the main supporting buoyancy for the upright 12 is provided by the lower buoy 11.

The shape of the lower buoy 11 can be in the structural form of a cylinder, a circular truncated cone, a prism and a frustum of a pyramid, and meanwhile, the shape of the upright 12 can also be in the structural form of a cylinder, a circular truncated cone, a prism and a frustum of a pyramid, and the shape of the lower buoy 11 is the best when the shape of the lower buoy is the same as that of the upright 12. The waterline area of the whole offshore photovoltaic supporting platform mainly comprises the upright posts 12, and the smaller waterline area can avoid the frequency interval of most ocean waves so as to avoid the structural resonance of the offshore photovoltaic supporting platform.

As shown in fig. 1-5, the axis of the upright post 12 is coaxial with or parallel to the axis of the lower buoy 11, or forms an outward-expanding obtuse included angle with the axis of the lower buoy 11, the top end of the upright post 12 extends towards the outside of the photovoltaic platform 16, so as to increase the connection strength around the outer contour of the photovoltaic platform 16, and simultaneously, the seating position of the outer contour of the photovoltaic platform 16 can be enlarged to increase the bearing area of the photovoltaic platform 16.

In this embodiment, the photovoltaic platform 16 is in the form of a disk, the photovoltaic platform 16 is a steel truss structure, and the photovoltaic array 19 is disposed on a photovoltaic support of the truss structure. Therefore, the bearing area of the photovoltaic platform can be increased, so that the arrangement number of the photovoltaic arrays 19 is increased, and the photovoltaic power generation capacity in a single offshore photovoltaic supporting platform is improved. Photovoltaic platform 16 connects a plurality of stands 12 top and forms triangle-shaped linking bridge, and when photovoltaic platform 16 area was far greater than the area of enclosing between three stand 12 and establishing, photovoltaic platform 16 was last to set up and to form sharp brace rod of being connected alone with single stand 12, and photovoltaic platform 16 forms triangle-shaped linking bridge to external expansion bracing 15 and its coupling part equally simultaneously, and welded connection forms the hexagonal shape and strengthens the support between two sets of triangle-shaped linking bridge.

As shown in fig. 6, the reinforcing structure includes a column reinforcing frame 17 provided inside the column 12, and the ballast tank inside the column 12 is partitioned into a plurality of independent ballast tank compartments by the column reinforcing frame 17. To improve the overall structural strength of the column 12 and to provide for staged injection and discharge of ballast water within the column 12.

As shown in fig. 7, the reinforcing structure includes a pontoon reinforcement frame 18 provided inside the connecting pontoon 13, and the ballast tank inside the connecting pontoon 13 is partitioned into a plurality of independent ballast tank compartments by the pontoon reinforcement frame 18. To improve the overall structural strength of connecting buoy 13 and to provide for a staged filling and draining of ballast water in connecting buoy 13.

When the height of the offshore photovoltaic supporting platform 16 relative to the sea surface is adjusted, the offshore photovoltaic supporting platform can be adjusted by filling and draining ballast tanks in the upright post 12, the lower buoy 11 and the connecting buoy 13. The ballast water is injected into the ballast tanks in the upright post 12, the lower buoy 11 and the connecting buoy 13 in the sequence of water injection, namely, the ballast tank of the lower buoy 11 is injected with water, the ballast tank of the connecting buoy 13 is injected with water, and finally the ballast tank of the upright post 12 is injected with water; and need to guarantee when the water injection that a plurality of ballast tank cabins in the same type structure are water injection simultaneously or carry out symmetrical formula water injection one by one to a plurality of ballast tank cabins along same hour hand direction to guarantee photovoltaic bearing structure's stability. And the order of the water discharge in the ballast tank compartments is reversed.

The ballast water in the ballast tank of the column 12 is injected from the bottom up, the water injection process from the lower end ballast tank compartment to the upper end ballast tank compartment is performed in sequence, and the discharge sequence is reversed. The ballast water in the ballast tanks of the connecting buoy 13 is injected into the ballast tank compartments at the first two ends and the middle ballast tank compartment at the last, in a symmetrical manner, and the discharge sequence is reversed.

In this embodiment, the column reinforcing frame 17 and the pontoon reinforcing frame 18 are reinforcing partition plates that communicate with a plurality of ballast tank compartments when workers pass therethrough and partition and seal the ballast tank compartments when water is poured or drained, and the reinforcing partition plates have openable and closable passage holes therein.

As shown in fig. 3-5, a column brace 14 is connected between the lower pontoon 11 or the column 12 and the photovoltaic platform 16, and the column brace 14 on the adjacent lower pontoon 11 or the column 12 is arranged in an included angle, the included angle between the two is partially connected with the bottom of the photovoltaic platform 16, and the extending direction of the column brace 14 is consistent with the axial direction of the connecting pontoon 13. The column stay 14 may be disposed on the upper surface of the lower buoy 11, or may be disposed on the outer surface of the bottom of the column 12.

As shown in fig. 3, the flaring connection structure includes a flaring brace 15 connected between the connection buoy 13 and the photovoltaic platform 16. The number of the outward-expanding inclined struts 15 is three, and the outward-expanding inclined struts 15 are arranged in the middle of the connecting buoy 13.

The upright post stay bar 14 and the outward-expanding diagonal brace 15 are high-strength circular steel tubes. The installation angle and the length of the outward-expanding inclined strut 15 are related to the position of the outer contour of the photovoltaic platform 16, so that the corresponding angle and the length can be adjusted and determined according to the bearing area of the photovoltaic platform 16.

As shown in fig. 1, the mooring system comprises mooring lines 2 and anchor piles 3; the anchor piles 3 are fixedly arranged in the seabed mud surface, and the mooring cables 2 are connected between the lower buoy 11 and the anchor piles 3. The anchor pile 3 is of a reinforced concrete structure, and the bottom of the anchor pile 3 is driven into the mud surface to a certain depth. The mooring cable 2 is a steel chain or tension cable, which provides a mooring restoring force by chain weight or elastic tension, respectively.

In this embodiment, when the water depth condition is within the middle and far sea, catenary mooring or tension mooring may be selected, and when the water depth condition is the deep and far sea, semi-tension mooring or tension mooring may be selected.

As shown in fig. 2, the stress of the semi-submersible offshore photovoltaic support system is indicated, the floating center of the offshore photovoltaic support platform can be positioned above the stable center by adjusting the water storage amount in the ballast tank, and the whole offshore photovoltaic support platform has a stable floating state and is not easy to overturn. In addition, the anchor point that three mooring cable 2 produced is great from the vertical distance of center of buoyancy and focus for marine photovoltaic supporting platform has great restoring force moment, can have great restoring force under big wave effect.

The utility model provides an installation construction method of three-column semi-submerged formula marine photovoltaic braced system that platform expands outward, through carrying out marine fixed point position installation to marine photovoltaic braced platform to and improve 16 utilization ratios of photovoltaic platform, increase photovoltaic power generation area's mode, includes the following step:

s1: the assembly connection of the offshore photovoltaic supporting platform is completed on the land, the photovoltaic platform 16 is installed through the assembly connection of the lower buoy 11, the upright post 12 and the connecting buoy 13, and the upright post brace 14 and the outward-expanding diagonal brace 15 are connected;

s2: injecting water into ballast tanks in a lower buoy 11 and a connecting buoy 13 in the offshore photovoltaic supporting platform, and injecting water into the ballast tanks in all the lower buoys 11 simultaneously when injecting water into the lower buoy 11, and injecting water into the ballast tanks in all the connecting buoys 13 simultaneously when connecting the ballast tanks in the connecting buoy 13, wherein the water injection sequence is that ballast tank compartments at two ends are firstly injected, and then ballast tank compartments in the middle are secondly injected; the towing working condition requirement of the offshore photovoltaic supporting platform is met by changing the water storage capacity of the ballast tank;

s3: dragging the offshore photovoltaic supporting platform to a target sea area through a tugboat, further injecting water into the ballast tanks in the upright columns 12 to meet the operation condition, sequentially carrying out water injection process of switching the ballast tank compartments on the upper layer after water injection of the ballast tank compartments on the lower ends is finished, wherein the injection sequence of ballast water in the ballast tanks of the upright columns 12 is from bottom to top;

s4: fixing anchor piles 3 in the seabed mud surface, and connecting the anchor piles with the bottoms of the lower floating cylinders 11 at the corresponding positions through mooring cables 2 to enable the offshore photovoltaic supporting platform to keep the middles surrounded by the anchor piles 3;

s5: the photovoltaic array 19 on the photovoltaic platform 16 is installed and the electrical system is arranged for the photovoltaic array 19.

The above embodiments are merely preferred technical solutions of the present invention, and it should be understood by those skilled in the art that modifications or substitutions of technical solutions or parameters in the embodiments can be made without departing from the principles and essential conditions of the present invention, and all the modifications or substitutions should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides a three-column semi-submerged marine photovoltaic braced system that platform expands outward which characterized in that: the marine photovoltaic support platform comprises a marine photovoltaic support platform and an anchoring system for connecting the marine photovoltaic support platform with a seabed mud surface, wherein the marine photovoltaic support platform comprises a semi-submersible floating body (1) and a photovoltaic platform (16) which is arranged on the semi-submersible floating body (1) and bears a photovoltaic array (19);

the bottom of the semi-submersible floating body (1) is provided with a lower buoy (11); a connecting buoy (13) is connected between the adjacent lower buoys (11), and a triangular main buoyancy chassis part is formed by connecting the connecting buoy (13) and the lower buoys (11); the main buoyancy chassis part is vertically extended from the upper part of the lower buoy (11) at the end point of the main buoyancy chassis part and is provided with a vertical column (12);

ballast tanks are arranged in the lower buoy (11), the connecting buoy (13) and the upright post (12); a reinforcing structure is arranged in the semi-submersible floating body (1);

photovoltaic platform (16) set up in on stand (12), semi-submerged body (1) with set up between photovoltaic platform (16) and expand connection structure outward.

2. The platform-flared three-column semi-submersible offshore photovoltaic support system of claim 1, wherein: the reinforcing structure comprises a column reinforcing frame (17) arranged inside the column (12), and the ballast tank in the column (12) is separated into a plurality of independent ballast tank chambers by the column reinforcing frame (17).

3. The three-column semi-submersible offshore photovoltaic support system with the extended platform according to claim 1, characterized in that: the reinforcing structure comprises a buoy reinforcement frame (18) arranged inside the connecting buoy (13), and the ballast tank in the connecting buoy (13) is separated into a plurality of independent ballast tank cabins through the buoy reinforcement frame (18).

4. The platform-flared three-column semi-submersible offshore photovoltaic support system of claim 1, wherein: the lower buoy (11) or the upright column (12) and the photovoltaic platform (16) are connected with an upright column stay bar (14).

5. The platform-flared three-column semi-submersible offshore photovoltaic support system of claim 1, wherein: the external expansion connecting structure comprises an external expansion inclined strut (15) connected between the connecting buoy (13) and the photovoltaic platform (16).

6. The platform-flared three-column semi-submersible offshore photovoltaic support system of claim 1, wherein: stand (12) axis or with coaxial setting between lower flotation pontoon (11) axis, or with be outer form contained angle that expands between lower flotation pontoon (11) axis, stand (12) top court photovoltaic platform (16) outside direction extends, increases the bearing area of photovoltaic platform (16).

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