Offshore floating foundation and offshore floating photovoltaic system

Abstract

The invention discloses an offshore floating foundation and an offshore floating photovoltaic system, and relates to the technical field of offshore photovoltaic power generation. The offshore floating foundation comprises a floating frame, a floating net and a plurality of floating cylinders, the floating frame comprises a frame body provided with a connecting frame, and the floating net comprises a plurality of first connecting pieces, a plurality of second connecting pieces and a plurality of third connecting pieces; the first connecting pieces and the second connecting pieces are perpendicularly arranged in a staggered mode and connected with the connecting frame, each first connecting piece comprises a plurality of second connecting sections with the ends connected with the third connecting pieces, and each second connecting piece comprises a plurality of fourth connecting sections with the ends connected with the third connecting pieces. The multiple floating cylinders are arranged on the second connecting section and the fourth connecting section correspondingly. According to the offshore floating foundation, the steel consumption can be reduced, so that the offshore floating foundation is lighter in dead weight under the same construction scale and convenient to process, the production and transportation cost can be reduced, the connection strength of the floating cylinder in the floating foundation is ensured, and the offshore floating foundation is safe and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore photovoltaic power generation, and in particular to an offshore floating foundation and an offshore floating photovoltaic system. Background Art

[0002] As photovoltaic power generation systems develop towards deep sea areas, photovoltaic foundations fixed by pile foundations can no longer meet the support requirements, and offshore floating photovoltaic foundations have been vigorously developed.

[0003] In the related art, the floating photovoltaic foundation is provided with a floating frame and a floating cylinder is fixed on the floating frame, and the buoyancy of the floating cylinder in the seawater makes the entire photovoltaic foundation float on the sea surface. However, in the process of using this method, a connecting rod for installing the floating cylinder needs to be provided on the floating frame, which further increases the steel consumption and the number of floating cylinders of the entire floating frame. The overall manufacturing cycle is long, the transportation cost is high, and the labor cost is high. In addition, the floating cylinder is fixed on the floating frame later. The wave load on the offshore floating foundation is very complex and extreme sea conditions occur frequently. In the process of use, there is a hidden danger that the floating cylinder will be separated from the floating frame, and the safety and reliability are low. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention proposes an offshore floating foundation, which can reduce the amount of steel used to make the weight lighter under the same construction scale, is easy to process, can reduce production and transportation costs, and ensures the connection strength of the buoy in the floating foundation, which is safe and reliable.

[0006] The embodiment of the present invention further provides an offshore floating photovoltaic system.

[0007] The offshore floating foundation according to an embodiment of the present invention comprises:

[0008] A floating frame, the floating frame comprising a frame body and a support platform, the frame body comprising a connecting frame arranged at an end, the connecting frame being rectangular, the support platform being fixedly arranged at one end of the frame body away from the connecting frame and being used for installing photovoltaic modules;

[0009] A floating net, the floating net comprising a plurality of first connecting members, a plurality of second connecting members and a plurality of third connecting members, the plurality of first connecting members extending in a transverse direction and spaced apart in a longitudinal direction, the plurality of second connecting members extending in a longitudinal direction and spaced apart in a transverse direction, the third connecting member being arranged at a position where the first connecting member and the second connecting member intersect, the first connecting member comprising two first connecting segments and a plurality of second connecting segments, the two ends of the first connecting segment being respectively connected to the connecting frame and the third connecting member, the two ends of the second connecting segment being respectively connected to the two corresponding third connecting members, the second connecting member comprising two third connecting segments and a plurality of fourth connecting segments, the two ends of the third connecting segment being respectively connected to the connecting frame and the third connecting member, the two ends of the fourth connecting segment being respectively connected to the two corresponding third connecting members;

[0010] A plurality of floating cylinders are respectively arranged at the second connecting section and the fourth connecting section.

[0011] The offshore floating foundation of the embodiment of the present invention can reduce the amount of steel used to make it lighter under the same construction scale, is easy to process, can reduce production and transportation costs, and ensures the connection strength of the buoy in the floating foundation, which is safe and reliable.

[0012] In some embodiments, the third connecting member includes a connecting plate and a fixing bolt, the connecting plate is provided with four first through holes at equal intervals along the circumferential direction, the first connecting segment, the second connecting segment, the third connecting segment and the fourth connecting segment are provided with a connecting block at one end for connecting with the third connecting member, the connecting block is provided with a second through hole, and the fixing bolt is used to pass through the first through hole and the second through hole to fix the connecting plate and the connecting block.

[0013] In some embodiments, a avoidance groove is provided on the connection disk corresponding to the first through hole, the connection block is assembled in the avoidance groove, and the connection block and the connection disk are stopped and matched in the radial direction of the connection disk.

[0014] In some embodiments, the float is integrally formed, the float is provided with a through hole extending along the axis, and the float has a filling cavity filled with a composite foam material.

[0015] In some embodiments, the floating tube includes a middle section and guide sections arranged at both ends of the middle section, the guide sections are conical, and the outer diameter of the cross section of the guide sections decreases in a direction away from the middle section.

[0016] In some embodiments, the second connecting segment and the fourth connecting segment have the same length, one floating tube is sleeved on each of the second connecting segments, and one floating tube is sleeved on each of the fourth connecting segments.

[0017] In some embodiments, an extension line of the side surface of the guide section is arranged at a first angle with the axis of the float, and the angle of the first angle is not greater than 45°.

[0018] In some embodiments, a plurality of fourth connecting members are included, two connecting portions are symmetrically provided on the middle section along the radial direction, and two ends of the fourth connecting member are respectively connected to connecting portions of two adjacent floating tubes arranged in the transverse or longitudinal direction.

[0019] In some embodiments, a plurality of anchor chains are provided on the floating frame at intervals along the circumferential direction, and sinking anchors are provided at the ends of the anchor chains.

[0020] The offshore floating photovoltaic system according to the embodiment of the present invention includes the offshore floating foundation according to any one of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of an offshore floating foundation according to an embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of the connection of the floating net in the offshore floating foundation according to an embodiment of the present invention.

[0023] Figure 3 It is a schematic structural diagram of a floating net in an offshore floating foundation according to an embodiment of the present invention.

[0024] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0025] Figure 5 It is a connection schematic diagram of the third connecting member in the offshore floating foundation according to an embodiment of the present invention.

[0026] Figure 6 It is a schematic structural diagram of a floating tube in an offshore floating foundation according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] Floating frame 1; frame body 11; connecting frame 111; supporting platform 12;

[0029] floating net 2; first connecting member 21; first connecting section 211; second connecting section 212; second connecting member 22; third connecting section 221; fourth connecting section 222; third connecting member 23; connecting plate 231; first through hole 2311; avoidance groove 2312; fixing bolt 232; connecting block 24; second through hole 241;

[0030] Floating cylinder 3; mounting hole 31; middle section 32; guide section 33;

[0031] Photovoltaic module 4;

[0032] Anchor chain 5. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0034] like Figures 1 to 6 As shown, the offshore floating foundation of the embodiment of the present invention includes a floating frame 1, a floating net 2 and a plurality of floating tubes 3. The floating frame 1 includes a frame body 11 and a support platform 12. The frame body 11 includes a connecting frame 111 arranged at an end portion. The connecting frame 111 is rectangular. The support platform 12 is fixedly arranged at one end of the frame body 11 away from the connecting frame 111 and is used to install the photovoltaic module 4. The floating net 2 includes a plurality of first connecting members 21, a plurality of second connecting members 22 and a plurality of third connecting members 23. The plurality of first connecting members 21 extend in the transverse direction and are arranged at intervals in the longitudinal direction. The plurality of second connecting members 22 extend in the longitudinal direction and are arranged at intervals in the transverse direction. The third connecting member 23 is arranged between the first connecting member 21 and the second At the intersection of the connecting members 22, the first connecting member 21 includes two first connecting segments 211 and multiple second connecting segments 212, the two ends of the first connecting segment 211 are respectively connected to the connecting frame 111 and the third connecting member 23, the two ends of the second connecting segment 212 are respectively connected to the corresponding two third connecting members 23, the second connecting member 22 includes two third connecting segments 221 and multiple fourth connecting segments 222, the two ends of the third connecting segment 221 are respectively connected to the connecting frame 111 and the third connecting member 23, the two ends of the fourth connecting segment 222 are respectively connected to the corresponding two third connecting members 23, and multiple floating tubes 3 are respectively arranged on the second connecting segment 212 and the fourth connecting segment 222.

[0035] The offshore floating foundation of the embodiment of the present invention is connected to the connecting frame 111 through the ends of the first connecting member 21 and the second connecting member 22, so as to realize the connection of the floating net 2 on the floating frame 1. The first connecting member 21 includes a first connecting section 211 and a second connecting section 212. When installing the first connecting member 21, the first connecting section 211 is installed first, and then the second connecting sections 212 are connected in sequence through the third connecting member 23 until the last second connecting section 212 is connected to the corresponding first connecting section 211. When installing each second connecting section 212, the floating drum 3 is installed on the second connecting section 212. The second connecting member 22 includes a third connecting section 221 and a fourth connecting section 222. The third connecting section 221 is installed first, and the third connecting section 221 is connected to the corresponding third connecting member 23. The fourth connecting portion is installed on two adjacent third connecting members 23 along the extension direction of the installed third connecting section 221, and the floating drum 3 is installed on the fourth connecting section 222 until the floating net 2 and the floating drum 3 are installed.

[0036] The offshore floating foundation of the embodiment of the present invention reduces the use of steel through the first connecting member 21 and the second connecting member 22. Compared with other floating foundations of the same construction scale, the self-weight is lighter, it is easy to process, and the production and transportation costs can be reduced. The first connecting member 21 is divided into two first connecting segments 211 and a plurality of second connecting segments 212, and the second connecting member 22 is divided into two third connecting segments 221 and a plurality of fourth connecting segments 222. The third connecting member 23 is used to connect the adjacent first connecting segments 211, the second connecting segments 212, the third connecting segments 221 and the fourth connecting segments 222. The connection of the connecting section 222 ensures the connection reliability of the first connecting member 21 and the third connecting member 23, avoids the failure of the connection of the entire first connecting member 21 or the second connecting member 22 when a break occurs somewhere in the first connecting member 21 or the second connecting member 22, and improves the connection reliability of the floating net 2. By setting the third connecting member 23, the floating cylinder 3 can be limited to avoid the floating cylinder 3 from moving relative to the extension direction of the first connecting member 21 or the second connecting member 22, reducing the stress concentration problem on the first connecting member 21 and the second connection, which is safe and reliable.

[0037] Optionally, the first connecting member 21 and the second connecting member 22 are both made of steel wire ropes or steel cable chains.

[0038] In some embodiments, Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the third connecting member 23 includes a connecting plate 231 and a fixing bolt 232. Four first through holes 2311 are circumferentially evenly spaced on the connecting plate 231. One end of the first connecting segment 211, the second connecting segment 212, the third connecting segment 221 and the fourth connecting segment 222 for connecting with the third connecting member 23 is provided with a connecting block 24. The connecting block 24 is provided with a second through hole 241. The fixing bolt 232 is used to pass through the first through hole 2311 and the second through hole 241 to fix the connecting plate 231 and the connecting block 24.

[0039] Specifically, a connecting block 24 is provided at one end of the first connecting section 211, and the other end of the first connecting section 211 is connected to the connecting frame 111, both sections of the second connecting section 212 are provided with a connecting block 24, one end of the third connecting section 221 is provided with a connecting block 24, and the other end of the third connecting section 221 is connected to the connecting frame 111, and both ends of the fourth connecting section 222 are provided with connecting blocks 24, and the first connecting section 211, the second connecting section 212, the third connecting section 221 and the fourth connecting section 222 can be respectively connected to the positions of the four first through holes 2311 of the connecting disk 231 through the connecting blocks 24, and one of the first connecting section 211, the second connecting section 212, the third connecting section 221 and the fourth connecting section 222 can be loaded and unloaded respectively, the operation is convenient, safe and reliable, and the second connecting member 22 and the fourth connecting member can be quickly replaced.

[0040] In some embodiments, Figure 4 and Figure 5 As shown, an avoidance groove 2312 is provided on the connecting disk 231 corresponding to the first through hole 2311, the connecting block 24 is assembled in the avoidance groove 2312, and the connecting block 24 and the connecting disk 231 are stopped in the radial direction of the connecting disk 231. By setting the avoidance groove 2312, the connection strength between the connecting block 24 and the connecting plate is increased, and the connection reliability between the connecting block 24 and the connecting disk 231 is ensured.

[0041] Optionally, the cross section of the avoidance groove 2312 is T-shaped, and the cross section of the connecting block 24 is T-shaped.

[0042] In some embodiments, the third connecting member 23 is a connecting ring, and one end of the first connecting segment 211, the second connecting segment 212, the third connecting segment 221 and the fourth connecting segment 222 for connecting to the third connecting member 23 is provided with a U-shaped connecting lug, a limiting groove is provided on the connecting lug, and a fastening bolt is provided on the connecting lug. After the ring segment of the connecting ring is fitted into the limiting groove, the fastening bolt is installed, and the connecting lug and the connecting ring are connected together by the fastening bolt.

[0043] In some embodiments, Figure 6 As shown, the float 3 is integrally formed, and the float 3 is provided with a through hole 31 extending along the axis. The float 3 has a filling cavity, and the filling cavity is filled with a composite foam material. By forming the float 3 as a whole, the float structure strength is higher than that of the float assembled with two halves, and the assembly work is reduced, and the installation is convenient. By filling the filling cavity with composite foam material, the self-weight of the float 3 is reduced and the effective buoyancy that the float 3 can provide is guaranteed.

[0044] Optionally, the float 3 is made of strong high molecular polyethylene material.

[0045] In some embodiments, Figure 6 As shown, the float 3 includes a middle section 32 and guide sections 33 arranged at both ends of the middle section 32. The guide section 33 is in a conical cylinder shape, and the outer diameter of the cross section of the guide section 33 decreases in the direction away from the middle section 32. By setting the guide section 33, it is convenient to fill the filling cavity densely, and stress concentration at the intersection of the end faces of the float 3 can be avoided, thereby increasing the impact resistance of the float 3 and extending the effective service life of the float 3.

[0046] In some embodiments, Figure 2 and Figure 3As shown, the second connecting section 212 and the fourth connecting section 222 have the same length, a floating cylinder 3 is sleeved on each second connecting section 212, and a floating cylinder 3 is sleeved on each fourth connecting section 222. The floating cylinders 3 on the second connecting section 212 or the fourth connecting section 222 are restricted by two adjacent third connecting members 23 to reduce the relative movement of the floating cylinders 3. In addition, the number of floating cylinders 3 that can be installed can be increased under the same area of ​​the floating net 2, thereby improving the bearing capacity of the floating foundation.

[0047] In some embodiments, Figure 6 As shown, the extension line of the side of the guide section 33 is set at a first angle with the axis of the floating tube 3, and the angle of the first angle is not greater than 45°. By constraining the taper of the guide section 33, the interference between two adjacent floating tubes 3 with vertical axes is reduced, which facilitates increasing the volume of the floating tube 3 within the effective area to increase the bearing capacity of the floating foundation.

[0048] In some embodiments, a plurality of fourth connecting members are included, and two connecting portions are symmetrically provided in the radial direction on the middle section 32, and both ends of the fourth connecting member are respectively connected to the connecting portions of two buoys 3 arranged adjacent to each other in the transverse or longitudinal direction. By providing the fourth connecting member, the connection of the buoys 3 in the transverse or longitudinal direction can be increased on the basis of the floating net 2, thereby strengthening the connection strength between the buoys 3 and the connecting frame 111, and enhancing the reliability of the floating foundation.

[0049] Optionally, the floating tube 3 located outside is connected to the connecting frame 111 through a fifth connecting member.

[0050] In some embodiments, Figure 1 As shown, a plurality of anchor chains 5 are provided at intervals along the circumferential direction on the floating frame 1, and a sinking anchor is provided at the end of the anchor chain 5. The sinking anchor is used to sink to the seabed, and the floating frame 1 is towed by the anchor chain 5 to fix the position of the floating frame 1, thereby improving the floating stability of the floating foundation on the sea surface.

[0051] The offshore floating photovoltaic system according to an embodiment of the present invention is described below.

[0052] The offshore floating photovoltaic system according to the embodiment of the present invention includes the offshore floating foundation according to any one of the above embodiments.

[0053] The offshore floating photovoltaic system of the embodiment of the present invention can reduce the amount of steel used to make it lighter under the same construction scale, is easy to process, can reduce production and transportation costs, and ensures the connection strength of the buoy in the floating foundation, which is safe and reliable.

[0054] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0059] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An offshore floating foundation, characterized in that: include: A floating frame, the floating frame comprising a frame body and a support platform, the frame body comprising a connecting frame arranged at an end, the connecting frame being rectangular, the support platform being fixedly arranged at one end of the frame body away from the connecting frame and being used for installing photovoltaic modules; A floating net, the floating net comprising a plurality of first connecting members, a plurality of second connecting members and a plurality of third connecting members, the plurality of first connecting members extending in a transverse direction and spaced apart in a longitudinal direction, the plurality of second connecting members extending in a longitudinal direction and spaced apart in a transverse direction, the third connecting member being arranged at a position where the first connecting member and the second connecting member intersect, the first connecting member comprising two first connecting segments and a plurality of second connecting segments, the two ends of the first connecting segment being respectively connected to the connecting frame and the third connecting member, the two ends of the second connecting segment being respectively connected to the two corresponding third connecting members, the second connecting member comprising two third connecting segments and a plurality of fourth connecting segments, the two ends of the third connecting segment being respectively connected to the connecting frame and the third connecting member, the two ends of the fourth connecting segment being respectively connected to the two corresponding third connecting members; A plurality of floating cylinders are respectively arranged at the second connecting section and the fourth connecting section.

2. The offshore floating foundation according to claim 1, characterized in that: The third connecting member includes a connecting plate and a fixing bolt, the connecting plate is provided with four first through holes at equal intervals along the circumferential direction, the first connecting segment, the second connecting segment, the third connecting segment and the fourth connecting segment are provided with a connecting block at one end for connecting with the third connecting member, the connecting block is provided with a second through hole, and the fixing bolt is used to pass through the first through hole and the second through hole to fix the connecting plate and the connecting block.

3. The offshore floating foundation according to claim 2, characterized in that: An avoidance groove is provided on the connection disk corresponding to the first through hole, the connection block is assembled in the avoidance groove, and the connection block and the connection disk are blocked and matched in the radial direction of the connection disk.

4. The offshore floating foundation according to claim 1, characterized in that: The float tube is integrally formed, and is provided with a through hole extending along an axis. The float tube has a filling cavity, and the filling cavity is filled with a composite foam material.

5. The offshore floating foundation according to claim 4, characterized in that: The floating cylinder comprises a middle section and guide sections arranged at two ends of the middle section. The guide sections are cone-shaped, and the outer diameter of the cross section of the guide sections decreases in a direction away from the middle section.

6. The offshore floating foundation according to claim 5, characterized in that: The second connecting section and the fourth connecting section have the same length, one floating tube is sleeved on each of the second connecting sections, and one floating tube is sleeved on each of the fourth connecting sections.

7. The offshore floating foundation according to claim 6, characterized in that: An extension line of the side surface of the guide section is arranged at a first angle with the axis of the floating tube, and the angle of the first angle is not greater than 45°.

8. The offshore floating foundation according to claim 5, characterized in that: It comprises a plurality of fourth connecting members, two connecting parts are symmetrically arranged in the radial direction on the middle section, and two ends of the fourth connecting member are respectively connected to the connecting parts of two adjacent floating tubes arranged in the transverse direction or the longitudinal direction.

9. The offshore floating foundation according to claim 1, characterized in that: A plurality of anchor chains are arranged at intervals along the circumferential direction on the floating frame, and sinking anchors are arranged at the ends of the anchor chains.

10. An offshore floating photovoltaic system, characterized in that: The invention comprises the offshore floating foundation as described in any one of claims 1 to 9.

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