CN219524193U - Wave-resistant type offshore floating type photovoltaic floating body structure in ice area - Google Patents

Abstract

The utility model discloses a wave-resistant type offshore floating photovoltaic floating body structure in an ice region, which comprises at least three floating boxes, wherein a connecting structure is arranged between every two adjacent floating boxes so that the floating boxes are connected end to form an annular structure, the connecting structure and the floating boxes form a steel frame, an HDPE floating body component is filled in the connecting structure to provide buoyancy, an ice breaking upright post is arranged at the top of each floating box, and a waterline is positioned on the ice breaking upright post when the floating body structure is arranged in sea water. The utility model can ensure the photovoltaic performance and safety under the conditions of low temperature, wind and wave load, ice load and the like.

Description

Wave-resistant type offshore floating type photovoltaic floating body structure in ice area

Technical Field

The utility model belongs to the technical field of offshore photovoltaic power generation, and particularly relates to a wave-resistant type offshore floating photovoltaic floating body structure in an ice region.

Background

In recent years, photovoltaic power generation is becoming the dominant in new energy industry due to the advantages of renewable, easy acquisition, no pollution, safety, reliability and the like. Liu Shangguang V power station construction area is big, and the waste of land is obvious, and relative, floating formula photovoltaic can be arranged in idle waters, like lake and reservoir top. Current inland water floating photovoltaics are no longer capable of providing sufficient water construction floating photovoltaic power plants. Therefore, increasingly tense land resources and limited inland water resources are becoming one of the key factors restricting the development of photovoltaic scale. The sea area of 300 ten thousand square kilometers is available in China, wherein the sea area suitable for the offshore floating type photovoltaic arrangement is about 71 ten thousand square kilometers, and the offshore photovoltaic can be theoretically installed to be about 7 hundred million kilowatts. Development of floating type photovoltaic at sea and combination with other forms of energy sources at sea (such as wind power at sea) are becoming one of the important strategies for energy structure transformation in China.

At present, the development of the floating type photovoltaic system at sea at home and abroad is in an early fumbling stage, no real commercial project of the floating type photovoltaic system at sea exists internationally, and the aimed sea area is mainly a middle-low dimension area. However, for floating type photovoltaic development on the sea in a cold ice area, not only the sea wave load is considered, but also sea ice load threat is faced, flat ice in winter can drift under the influence of sea current and wind load, larger horizontal ice extrusion force is generated, the larger the scale of the floating body structure at the waterline is, the larger the overall ice force is, the more obvious sea ice accumulation phenomenon is easily generated, and the serious threat is formed to the safe operation of the floating type photovoltaic module. The strength of the traditional HDPE floating body material cannot resist local high pressure generated by sea ice breaking, which is not beneficial to the structural safety.

In order to fully utilize the offshore resources of the cold ice region, research and development of a floating type photovoltaic floating body structure capable of guaranteeing photovoltaic performance and safety under the conditions of low temperature, wind and wave load, ice load and the like are needed, and a feasible scheme is provided for implementation and development of the offshore floating type photovoltaic in the ice region in China.

Disclosure of Invention

The utility model aims to solve the technical problems in the prior art and provides a wave-resistant type offshore floating photovoltaic floating body structure in an ice region, which can ensure photovoltaic performance and safety under the actions of low temperature, wind wave load, ice load and the like.

In order to solve the technical problems, the utility model adopts the following technical scheme:

an anti unrestrained formula marine showy formula photovoltaic body structure of ice district, its characterized in that: including at least three buoyancy tank, be equipped with connection structure between the adjacent buoyancy tank so that buoyancy tank end to end forms annular structure, connection structure and buoyancy tank form steel frame, and inside packing HDPE body subassembly provides buoyancy, and the top of buoyancy tank is equipped with opens ice the stand, and when the body structure was located in the sea water, the waterline was in on the stand of opening ice. The whole structure is triangle or square, and a connecting structure is arranged between 3-4 adjacent buoyancy tanks so that the buoyancy tanks are connected end to form an annular structure. The annular structure is generally a steel structure, which is beneficial to improving the overall rigidity and enhancing the capability of resisting the fatigue load of the wave force. The ice breaking upright post is arranged at the top of the buoyancy tank, so that the floating body structure is beneficial to the use of the buoyancy tank in the sea area in the ice area, and meanwhile, the ice breaking upright post is also used as a support of the upper photovoltaic module. The buoyancy tank reserves the ballast filling hole, and can adjust the water pressure and load, so that the lower annular floating body structure is semi-submerged below the sea level, the direct contact of the wide and large size of the floating body part with sea ice can be avoided, the generation of larger static ice force is avoided, and the integral ice load of the floating body structure is reduced. According to the basic principle of the offshore floating platform, the stability of the floating body is improved by increasing the water plane; the volume of the underwater floating body is increased, and the reserve buoyancy of the floating body is increased; by improving the floating body material, the capability of the floating body material to resist the fatigue load of wave force is enhanced.

Further, connection structure is the angle steel, and the steel frame that connecting rod and buoyancy tank are constituteed is formed with holds the district, holds and is equipped with the body subassembly in the district, through the setting of many connecting rods, can make to set up the body subassembly between the connecting rod, fills the body subassembly and can effectively promote the whole buoyancy of structure. The float assembly may be a HDPE float assembly or other watertight float assembly that provides buoyancy. The accommodation area that connecting rod and buoyancy tank formed bears the outside load such as most stormy waves, sea ice, can form effectual protection to inside HDPE body subassembly, can promote the durability of HDPE body subassembly to a certain extent. The inside is filled with a plurality of HDPE floating body components or equivalent floating body components formed by blow molding with the same size, so that the integral buoyancy of the structure is obviously improved, the steel consumption is greatly reduced, and the economical efficiency of the floating type photovoltaic floating body is enhanced. The floating body component can be filled with ballast, so that the gravity center of the structure can be effectively reduced, and the stability is improved. The floating body components can be connected through the connecting piece lug plates, so that the floating body components can be better installed in a frame formed by surrounding the connecting rod and the buoyancy tank, and the integrity of the floating foundation is improved.

Further, the section of the ice breaking upright post is triangular. The triangular section can effectively break ice, and the azimuth angle of the ice breaking upright post can be determined according to the actual sea area floating ice so as to achieve the optimal ice breaking effect; the specific size of the ice breaking upright post can be determined according to the required size of the floating body, but the side length of the ice breaking upright post is not suitable to exceed the width of the lower buoyancy tank.

Further, a stiffening plate is arranged between the icebreaking upright post and the buoyancy tank. The connection strength between the ice breaking upright post and the buoyancy tank can be improved through the stiffening plate.

Further, the buoyancy tank is provided with an ear plate. The otic placode sets up in the outside of flotation tank, can make things convenient for the connection of flotation tank and anchoring system, also can be convenient for simultaneously to connect between the adjacent body structure, forms the floating photovoltaic square matrix.

Further, the inner side of the buoyancy tank is provided with stiffening ribs. The inside stiffening rib that sets up of flotation tank can improve box rigidity, simultaneously because the flotation tank upside sets up the stand, consequently the atress of flotation tank upper portion is great, arranges the stiffening rib in order to strengthen its structural strength, makes it be difficult for taking place the buckling recess.

Further, the outer surface of the floating body component is provided with ribs. Through the setting of rib, can increase frictional force, can effectively reduce the dislocation risk between the body subassembly.

Furthermore, the vertical surfaces of the two outer sides of the buoyancy tank are welded with the lug plates, so that the buoyancy tank is connected with an anchor system or an adjacent floating body structure to form a floating type photovoltaic square matrix, and the stability of the floating body structure is improved.

Further, a stiffening sheet is arranged between the connecting rods, so that the connection strength between the connecting rods is improved, and angle steel is generally adopted for the connecting rods.

The utility model also provides an installation method of the wave-resistant type offshore floating photovoltaic floating body structure in the ice area, which is characterized by comprising the following steps:

s1: the buoyancy tank, the connecting structure and the ice breaking upright post are processed, manufactured, welded and assembled to form an annular structure;

s2: the HDPE floating body component is processed and manufactured and is arranged in a steel frame formed by the floating box and the connecting structure;

s3: towing the floating body structures to an engineering sea area through a towing boat, and connecting the floating body structures to form a photovoltaic array by adopting steel stranded wires or high-strength nylon ropes;

s4: the ear plates are connected with the anchoring system to finish the mooring positioning installation of the floating body structure.

The sources of steel structures such as the buoyancy tank, the connecting structure, the ice breaking upright post and the like and the HDPE floating body component are wide, the steel structures can be integrally welded in a processing plant, the manufacturing process is simple and mature, the actual size can be flexibly adjusted according to the capacity of the photovoltaic electric field to carry out large-scale purchase and production, and the cost is convenient to save; the whole floating body structure can be completely assembled in the land field, the production efficiency is effectively ensured, and the floating body structure is directly towed to an engineering sea area through a tugboat and then is connected with an anchor system to complete the installation, so that the installation steps are simple.

Due to the adoption of the technical scheme, the utility model has the following beneficial effects:

1. the structure has the advantages of larger underwater floating body, deeper draft, larger drainage, high stability, better stability of the floating body and better wind and wave resistance. Form traditional steel construction body and HDPE body and combine in form and function, when satisfying displacement and anti unrestrained ability of wind, reduce steel construction quantity greatly, reduce cost improves the economic nature.

2. The hollow part of the lower annular structure can be used as a damping pool, and has the effect of reducing and absorbing wave energy to the wave load of the external environment, so that the wave resistance of the floating body is improved.

3. The lower annular structure is submerged below the sea level, so that the direct contact of the large size of the floating body part with sea ice is avoided, the generation of large static ice force is avoided, the integral ice load of the floating body structure is reduced, and the capability of resisting ice is provided for the floating type steel structure.

4. The upper portion icebreaking upright post is used for connecting the lower portion floating body frame and the upper portion photovoltaic module, the section of the upright post is triangular, the dimension is small, icebreaking is facilitated, the ice force is small, and meanwhile, floating ice is not easy to accumulate before the upright post. Meanwhile, the upright posts are distributed at four corners of the floating body, the distance is large, smooth drifting of broken flat ice is facilitated, accumulation and blockage of sea ice above the floating body structure can be effectively avoided, and ice resistance of the structure can be remarkably improved.

5. The floating body structure mainly comprises the steel upright post, the steel plate, the angle steel and the HDPE floating body, the sources of the materials are wide, the manufacturing process is simple and mature, the large-scale purchase and production can be carried out according to the actual size, and the cost is convenient to save.

6. According to the utility model, the wind and wave resistance capability and the structural strength are greatly improved through the steel frame and the steel buoyancy tank, and the urgent demands of the dead weight of the upper photovoltaic system and the snow falling in winter on the buoyancy are solved by utilizing the HDPE floating body.

Drawings

The utility model is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of an ice area wave-resistant offshore floating photovoltaic floating body structure according to the present utility model;

FIG. 2 is a schematic view of the structure of the floating box provided with the ear plate in the utility model;

FIG. 3 is a schematic view of a floating body assembly according to the present utility model;

FIG. 4 is a schematic structural view of an icebreaking column and a buoyancy tank upper plate in the present utility model;

FIG. 5 is a schematic view of the connection between a buoyancy tank and a stiffening rib according to the present utility model.

In the figure, a 1-buoyancy tank; 2-connecting rods; 3-an ice breaking upright post; 4-stiffening ribs; 5-ear plates; a 6-float assembly; 7-prismatic bars; 8-ear plates; 9-stiffening plates; 10-stiffener.

Detailed Description

As shown in fig. 1 to 5, the wave-resistant type offshore floating photovoltaic floating body structure in an ice region comprises at least three floating boxes 1, wherein a connecting structure is arranged between every two adjacent floating boxes 1 so that the floating boxes 1 are connected end to form an annular structure, the connecting structure and the floating boxes 1 form a steel frame, an HDPE floating body component 6 is filled in the connecting structure to provide buoyancy, an ice breaking upright post 3 is arranged at the top of the floating boxes 1, and when the floating body structure is arranged in sea water, a waterline is positioned on the ice breaking upright post 3. Four buoyancy tanks 1 are generally adopted to form a 'back' floating body structure. The buoyancy tank 1 is connected through the connecting structure to form an integral structure, so that the integral rigidity can be improved, the buoyancy tank 1 is generally of a steel structure, and the capability of resisting the fatigue load of wave force is enhanced. The top sets up icebreaking upright post 3, can realize icebreaking effect, does benefit to the use of body structure in ice district sea area, and icebreaking upright post 3 also can be as upper portion photovoltaic module's support. The ice breaking upright post 3 can be integrally rolled by adopting a seamless steel pipe or a steel plate. The annular structure can improve the overall stability and the wave resistance. The buoyancy tank 1 retains ballast filling holes, and can adjust water ballast. The whole structure can be integrally prefabricated in a land processing manufacturing factory, and the offshore site construction is not needed.

The inner side of the buoyancy tank 1 is provided with stiffening ribs 4. The stiffening rib 4 is arranged on the inner side of the buoyancy tank 1, so that the rigidity of the tank body can be improved, and meanwhile, as the upright post is arranged on the upper side of the buoyancy tank 1, the upper part of the buoyancy tank 1 is stressed greatly, and the stiffening rib 4 is arranged to strengthen the structural strength of the buoyancy tank, so that buckling sinking is not easy to occur.

The buoyancy tank 1 is provided with an ear plate 5. The otic placode 5 sets up in the outside of flotation tank 1, can make things convenient for the connection of flotation tank 1 and anchoring system, also can be convenient for the connection between the adjacent body structure simultaneously, forms the floating photovoltaic square matrix.

The connection structure is connecting rod 2, and connecting rod 2 generally adopts the angle steel, is formed with between a plurality of connecting rods 2 and the buoyancy tank 1 and holds the district, is equipped with body subassembly 6 in holding the district, through the setting of many connecting rods 2, can make to set up body subassembly 6 between the connecting rod 2, fills body subassembly 6 and can effectively promote the whole buoyancy of structure. The float assembly 6 may be a HDPE float assembly 6 or other water-tight float assembly 6 that provides buoyancy. The accommodation area formed by the connecting rod 2 can form effective protection for the inner HDPE floating body component 6, and the durability of the HDPE floating body component 6 can be improved to a certain degree. The inside is filled with a plurality of HDPE floating body components 6 or equivalent floating body components 6 which are formed by blow molding with equal size, the integral buoyancy of the structure is obviously improved, the steel consumption is greatly reduced, and the economical efficiency of the floating type photovoltaic floating body is enhanced. The floating body assembly 6 can be filled with ballast, so that the gravity center of the structure can be effectively lowered, and the stability is improved. The floating body components 6 can be connected through the connecting piece lug plates 5, so that the floating body components can be better installed in the frame formed by the connecting rod 2 and the buoyancy tank 1, and the integrity of the floating foundation is improved.

The outer surface of the float assembly 6 is provided with ribs 7. By means of the provision of the ribs 7, the friction can be increased, and the risk of dislocation between the floating body components 6 can be effectively reduced.

The float assembly 6 is provided with an ear plate 8. The arrangement of the ear plate 8 can facilitate the connection and fixation between the floating body component 6 and the connecting rod 2, and the overall stability is improved.

The section of the ice breaking upright post 3 is triangular. The triangular section can effectively break ice, and the azimuth angle of the ice breaking upright post 3 can be determined according to the actual sea area floating ice so as to achieve the optimal ice breaking effect; the specific size of the ice breaking upright post 3 can be determined according to the required size of the floating body, but the side length of the ice breaking upright post 3 is not suitable to exceed the width of the lower buoyancy tank 1, and the floating ice is not easy to accumulate before the ice breaking upright post and is used as a support of the upper photovoltaic module.

A stiffening plate 9 is arranged between the ice breaking upright post 3 and the buoyancy tank 1. The connection strength between the icebreaking upright post 3 and the buoyancy tank 1 can be improved through the stiffening plate 9.

A stiffening piece 10 is arranged between the connecting rods 2 connected with each other, so that the connection strength between the connecting rods 2 is improved, and angle steel is generally adopted for the connecting rods 2.

In the construction process, a mode of prefabricating a single floating body can be adopted. Pre-machining a single unit floating body in a machining field; after the units are transported to a target sea area by adopting a pontoon or a barge, assembling a photovoltaic array; the assembled photovoltaic array is connected with the mooring system and the connecting lines through the side ear plates 5, and the concrete implementation scheme is as follows:

1. and determining the number of the adopted photovoltaic floating body structures according to the planned photovoltaic capacity and the size of the adopted photovoltaic plates, and assembling the floating body structures in a processing field. Firstly, adopting a plate frame structure to construct floating boxes 1 at four corners, and connecting four floating boxes 1 by angle steel to form a frame structure; the upper part of the square steel buoyancy tank 1 is welded and connected with an upper ice breaking upright post 3; eight perforated lug plates 5 at four corners are connected in a special welding or high-strength welding mode and serve as connecting holes and mooring cable guide holes; the HDPE floating body is placed in the frame structure formed by the angle steel.

2. Towing the floating body structure to an engineering sea area through a towing boat, and assembling the floating body structure in the water; and steel stranded wires or high-strength nylon ropes are adopted to connect all floating body structures to form a photovoltaic array. It should be noted here that the floating body structure is set to be square according to the present utility model, and the side length scale can be adjusted accordingly according to the actual situation. The number of photovoltaic arrays arranged can also be adjusted accordingly by the actual requirements.

3. And the photovoltaic array is assembled by adopting the floating body structure, and meanwhile, the supporting structure of the upper photovoltaic panel and the photovoltaic panel are installed. The photovoltaic support is connected with the upright post in a welding mode.

4. And connecting the upper ends of mooring ropes which are pre-installed in the target sea area, and completing the connection work of the floating body and the mooring system.

The above is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any simple changes, equivalent substitutions or modifications and the like made on the basis of the present utility model to solve the substantially same technical problems and achieve the substantially same technical effects are included in the scope of the present utility model.

Claims (4)

1. An anti unrestrained formula marine showy formula photovoltaic body structure of ice district, its characterized in that: including at least three buoyancy tank, adjacent be equipped with connection structure between the buoyancy tank so that buoyancy tank end to end forms annular structure, connection structure with the buoyancy tank forms steel frame, and inside packing HDPE body subassembly provides buoyancy, the top of buoyancy tank is equipped with the icebreaking stand, when the body structure is located in the sea water, the waterline is in on the icebreaking stand.

2. The ice-area wave-resistant type offshore floating photovoltaic floating body structure according to claim 1, wherein: the angle steel is adopted between the buoyancy tanks as a connecting structure, the HDPE floating body component adopts a watertight floating body component capable of providing buoyancy as a substitute, the buoyancy is provided for the integral mechanism, the HDPE floating body component reserves a ballast filling hole, and a space is reserved for adjusting the integral floating state after installation.

3. The ice-area wave-resistant type offshore floating photovoltaic floating body structure according to claim 1, wherein: the upper part of the floating box top plate is directly welded with the ice breaking upright post, the section of the ice breaking upright post is triangular and is used for breaking ice and bearing ice load, and floating ice is not easy to accumulate before the ice breaking upright post and is used as a support of an upper photovoltaic module.

4. The ice-area wave-resistant type offshore floating photovoltaic floating body structure according to claim 1, wherein: ear plates are welded on the vertical surfaces of the two outer sides of the buoyancy tank, and are used for being connected with an anchoring system or an adjacent floating body structure to form a floating type photovoltaic square matrix.