The present application claims priority under 35 U.S.C. ยง 119 to Chinese Application No. 201720873651.0 filed July 18, 2017 and Chinese Application No. 201721275446.0, filed Sep. 29, 2017, the entire content of which is incorporated herein by reference in its entirety.
This application relates to the technical field of waterborne photovoltaic devices, and in particular to a photovoltaic module floating supporting structure.
In order to save land resources and make full use of the high reflectivity and low temperature properties of water surface to enhance the power generation rate, waterborne floating power stations are set up. The waterborne floating power station includes a photovoltaic module floating supporting structure and a photovoltaic module connected to the photovoltaic module floating supporting structure by a connecting assembly.
A conventional photovoltaic module floating supporting structure includes a floating body and a T-shaped connecting column base arranged on an upper surface of the floating body. An upright column of the connecting assembly is clamped at the T-shaped connecting column base to be fixed to the floating body. The T-shaped connecting column base has one end integrated with the floating body and another end engaged with the upright column. When manufacturing the photovoltaic module floating supporting structure, it first needs to make a T-shaped connecting slot by injection molding, and then pre-embed the T-shaped connecting slot into the floating body by blow molding, to allow the T-shaped connecting slot be integrally formed with the floating body.
However, since the T-shaped connecting column base of the floating body is a weak point for load bearing, and stress is concentrated at a root of the T-shaped connecting slot for a long term. With the aging and deterioration of the resin material, the stress concentration is becoming more and more serious. The root of the T-shaped connecting slot is apt to be broken, resulting in a short service life of the photovoltaic module floating supporting structure.
Therefore, a technical issue to be addressed urgently by the person skilled in the art is to prolong the service life of a photovoltaic module floating supporting structure.
An object of the present application is to provide a photovoltaic module floating supporting structure which has a prolonged service life.
In order to achieve the above object, a photovoltaic module floating supporting structure is provided according to the present application, which includes a floating body, and further includes a first supporting plate integrally formed with the floating body and configured to be connected to a connecting assembly. The first supporting plate has an upper surface smoothly connected to an upper surface of the floating body and a lower surface smoothly connected to a lower surface of the floating body.
Preferably, the photovoltaic module floating supporting structure further includes a second supporting plate integrally formed with the floating body and configured to be connected to the connecting assembly. An inner support groove is defined by the second supporting plate and the upper surface of the floating body.
Preferably, the first supporting plate and/or the second supporting plate are solid structures.
Preferably, the upper surface of the first supporting plate is provided with a first connection positioning hole and a first drainage groove in communication with the first connection positioning hole;
Preferably, the first supporting plate is arranged on a lateral side of the floating body, multiple first supporting plates are provided, and the multiple first supporting plates are symmetrically distributed at opposite sides of the floating body along a center line of the floating body.
Preferably, the upper surface of the floating body is provided with an inclined support groove configured to connect the first supporting plate to the second supporting plate.
Preferably, the floating body is provided with a cooling hole, and two ends of the cooling hole are respectively in communication with the upper surface of the floating body and the lower surface of the floating body.
Preferably, a side surface, for forming the cooling hole, of the floating body is provided with an inner sidewall reinforcing rib, multiple inner sidewall reinforcing ribs are provided, and the multiple inner sidewall reinforcing ribs are distributed at equal intervals in a peripheral direction of the cooling hole.
Preferably, the upper surface of the floating body is provided with a transverse reinforcing rib and a longitudinal reinforcing rib arranged perpendicularly to the transverse reinforcing rib, the transverse reinforcing rib is connected to the longitudinal reinforcing rib, a lateral side of the floating body is provided with an outer sidewall reinforcing rib, and the lower surface of the floating body is provided with a bottom reinforcing rib.
Preferably, each of the transverse reinforcing rib, the longitudinal reinforcing rib and the bottom reinforcing rib is recessed inward from the respective surface of the floating body.
Preferably, the upper surface of the floating body includes an arc-shaped reinforcing surface recessed toward the center of the upper surface of the floating body and a flat surface surrounding a periphery of the arc-shaped reinforcing surface, and the flat surface is smoothly connected to a side portion of the arc-shaped reinforcing surface.
Preferably, the photovoltaic module floating supporting structure further includes a connecting lug. The first supporting plate and the connecting lug are integrally formed, and a mounting surface of the connecting lug is coplanar with a mounting surface of the first supporting plate.
Preferably, the upper surface of the floating body is provided with a first drainage passage concaved inward from two ends of the floating body toward a center of the floating body and two second drainage passages respectively arranged at two opposite sides of a bottommost portion of the first drainage passage, and each of the second drainage passages has one end in communication with the first drainage passage and another end extending to an outer periphery of the floating body to form a drainage opening.
Preferably, the lower surface of the floating body is provided with a reinforcement supporting member, the reinforcement supporting member is integrally formed with the floating body, and the reinforcement supporting member has two ends respectively connected to the upper surface and the lower surface of the floating body.
Preferably, the reinforcement supporting member is located at a center of the floating body, the lower surface of the floating body is provided with a bottom supporting strip surrounding the reinforcement supporting member, and the bottom supporting strip is integrally formed with the floating body.
In the above technical solutions, the photovoltaic module floating supporting structure according to the present application includes a floating body and a first supporting plate integrally formed with the floating body and configured to be connected to a connecting assembly, The first supporting plate has an upper surface smoothly connected to an upper surface of the floating body, and has a lower surface smoothly connected to a lower surface of the floating body. In use, the connecting assembly is installed on the first supporting plate and the photovoltaic module is installed on the connecting assembly.
According to the above description, in the photovoltaic module floating supporting structure according to the present application, the first supporting plate is integrally formed with the floating body, and the connecting assembly is connected to the first supporting plate, thus stress concentration is avoided, the strength of connection between the photovoltaic module floating supporting structure and the connecting assembly is improved, the safety of the power generation of the photovoltaic module is ensured, and the service life of the photovoltaic module floating supporting structure is effectively prolonged.
For more clearly illustrating embodiments of the present application or the technical solutions in the conventional technology, drawings referred to describe the embodiments or the conventional technology will be briefly described hereinafter. Apparently, the drawings in the following description are only examples of the present application, and for the person skilled in the art, other drawings may be obtained based on the drawings provided without any creative efforts.
1 floating body,
11 air blowing port,
12 transverse reinforcing rib,
13 longitudinal reinforcing rib,
14 outer sidewall reinforcing rib,
15 inner sidewall reinforcing rib,
16 arc-shaped reinforcing surface,
17 flat surface,
18 bottom reinforcing rib,
19 upper reinforcing rib;
110 first drainage passage;
111 second drainage passage;
112 reinforcement supporting member;
113 bottom supporting strip;
2 first supporting plate,
21 cantilevered reinforcing rib,
3 connecting lug,
31 connecting lug positioning hole,
32 anti-reverse rotating hole,
4 cooling hole,
5 first connection positioning hole,
6 first drainage groove,
7 inclined support groove,
8 second supporting plate;
91 rear support leg,
92 front support leg,
93 photovoltaic module,
94 transverse guide rail,
95 tie rod,
96 pressing block,
97 floating bodies for convergence boxes and string inverters,
98 bolt-nut connecting pair,
99 floating walkway.
A photovoltaic module floating supporting structure is provided according to the present application, which has an prolonged service life.
For enabling the person skilled in the art to better understand the technical solution of the present application, the present application will be described in detail further with reference to the drawings and embodiments.
Referring to
A connecting lug 3 may be arranged independently with respect to the first supporting plate 2. The connecting lugs 3 are provided at corners of two ends of the floating body 1. The first supporting plate 2 is arranged on the lateral side of the floating body 1, and there are multiple first supporting plates 2, and the multiple first supporting plates 2 are symmetrically distributed on opposite lateral sides of the floating body 1 along the center line of the floating body 1. Generally, the floating body 1 is a rectangular solid overall, and preferably, four connecting lugs 3 are arranged on the floating body 1, and the first supporting plates 2 are provided on the lateral sides of the floating body 1, and the specific number and position of the first supporting plates 2 are set according to practical installation requirements. As shown in
As shown in
In use, the connecting assembly is installed on the first supporting plate 2, and a photovoltaic module 93 is installed on the connecting assembly. Support legs are fixed to the first supporting plates 2, and the first supporting plates 2 at opposite sides of the floating body 1 are reliably connected to front support legs 92 and rear support legs 91, respectively, by means of bolt sets via the first connection positioning holes 5. There is a certain height difference between the front support legs 92 and the rear support legs 91, thereby forming a certain angle therebetween, and the angle is adapted to the requirement of the photovoltaic module 93 for maximizing power generation.
After the front support legs 92 and the rear support legs 91 are connected to the first supporting plates 2, the front support legs 92 are connected to a transverse guide rail 94 by means of bolt sets, and the rear support legs 91 are connected to another transverse guide rail 94 by means of bolt sets. Each of the transverse guide rails 94 is provided with several pressing blocks 96, and an upper rubber strip and a lower rubber strip are provided between the transverse guide rail 94 and the pressing blocks 96. The photovoltaic module 93 is clamped between the upper and lower rubber strips. The photovoltaic module 93 and the transverse guide rails 94, the support legs (the front support legs 92 and the rear support legs 91) and the floating body 1 are reliably connected to form an integral structure by the bolt sets. A tie rod 95 and a connecting pair are provided between the transverse guide rails 94 or between the support legs for position limiting, to prevent the floating body 1 from transmitting the deformation, caused by thermal expansion, to the transverse guide rails 94, the rear support leg 91, the front support leg 92 and the pressing blocks 96, and eliminates the risk of falling off of the connecting assembly caused by insufficient clamping area of the pressing blocks 96.
The photovoltaic module floating supporting structures, floating walkways 99, floating bodies for convergence boxes and string inverters 97, and bolt-nut connecting pairs 32 are connected contiguously. The photovoltaic modules 93 are installed on the photovoltaic module floating supporting structures by means of bracket assemblies, to achieve reliable arrangement of components of a floating square array, and achieve operability and maintainability of all parts of the floating square array.
According to the above description, in the photovoltaic module floating supporting structure according to the present application, since the first supporting plate 2 is integrally formed with the floating body 1, the first supporting plate 2 has a solid structure, and the first supporting plate 2 is provided with the first connection positioning hole 5, thus the stress concentration is avoided, and the strengths of the first supporting plate 2 and the connecting assembly are improved, and even though the first connection positioning hole 5 is broken, it can be repaired, thereby ensuring the safety of power generation of the photovoltaic module, and effectively prolonging the service life of the photovoltaic module floating supporting structure.
Further, the photovoltaic module floating supporting structure further includes a second supporting plate 8 integrally formed with the floating body 1. A second connection positioning hole is provided in the second supporting plate 8 for facilitating mounting the connecting assembly for the worker. The number of the first connection positioning hole 5 and the number of the second connection positioning hole can be determined according to the practical requirements. In order to improve the connection strength, it is preferable that multiple first connection positioning holes 5 and multiple second connection positioning holes are provided. In order to facilitate the formation of the second supporting plate 8 and improve the connection strength, it is preferable that the second supporting plate 8 has a solid structure. In order to improve the overall stability, it is preferable that an inner support groove is formed by the second supporting plate 8 and the upper surface of the floating body 1, and an inclined support, arranged in the inner support groove, of the end of the connecting assembly transmits an action force of the photovoltaic module in a north-south direction into the inner support groove of the floating body 1. Preferably, the upper surface of the first supporting plate 2 is provided with a first drainage groove 6 in communication with the first connection positioning hole 5 and/or an upper surface of the second supporting plate 8 is provided with a second drainage groove in communication with the second connection positioning hole, and accumulated water can be discharged through the first drainage groove 6 and the second drainage groove. The front and rear supports are connected by support connecting pairs in the form of bolts. The floating body 1 has several first supporting plates 2 and several second supporting plates 8. The first supporting plates 2 are configured to transmit the vertical load of the photovoltaic module 93 and the second supporting plates 8 are configured to transmit transverse loads of the photovoltaic module 93 and the connecting assembly, thereby enhancing the stability of the photovoltaic module when suffered from the wind.
The floating body 1, the first supporting plates 2 and the second supporting plates 8 are integrally formed, and the first supporting plates 2, the second supporting plates 8 and the floating body 1 are integrally molded by blow molding to form a solid region.
The upper surface of the floating body 1 is provided with an inclined support groove 7 configured to connect the first supporting plate 2 to the second supporting plate 8. The photovoltaic module floating supporting structure and the photovoltaic module 93 are reliably secured to form an integral structure by the front support legs 92, the rear support legs 91, the transverse guide rails 94, and the pressing blocks 96, and a certain angle of inclination is formed between the photovoltaic module floating supporting structure and the photovoltaic module 93, and the above combined integral structure and floating bodies of other specifications are spliced together by the connecting lugs 3 to form a square array, and to eventually form a floating photovoltaic power generation array. The inclined support groove 7 is configured to assist the force transmission between the floating body 1 and the front support of the connecting assembly as well as between the floating body 1 and the inclined support of the connecting assembly, to enhance the transverse resistance of the photovoltaic assembly when subjected from the wind, to improve the stability of the photovoltaic assembly in the north-south direction, and to improve the wind resistance. By providing the second supporting plate 8 and the inclined support of the connecting assembly, the possibility that the positioning portion of the floating body is subjected to a stress for a long time and has a creep deformation accordingly is reduced.
Preferably, the upper surface of the floating body 1 is provided with an upper reinforcing rib 19, and the number of the reinforcing rib 19 is determined according to the practical requirements. Preferably, the reinforcing rib 19 extends along a length direction of the floating body 1, and in the case that multiple reinforcing ribs 19 are provided, the multiple reinforcing ribs 19 are arranged sequentially at equal intervals. By providing the reinforcing ribs 19, the photovoltaic module floating supporting structures can be stressed uniformly when being stacked for transportation, to prevent the situation that the photovoltaic module floating supporting structure is deformed by non-uniform force and damaged accordingly when the photovoltaic module floating supporting structures are stacked too high in transportation.
On the basis of the above solutions, as shown in
As shown in
As shown in
Preferably, the reinforcement supporting member 112 is located at the center of the floating body 1, the lower surface of the floating body 1 is provided with a bottom supporting strip 113 surrounding the reinforcement supporting member 112, and the bottom supporting strip 113 is integrally formed with the floating body 1. Preferably, the lower surface of the floating body 1 is concaved inward from the outer periphery toward the center, and the bottom end of the reinforcement supporting member 112 flushes with the lower surface of the floating body 1. Preferably, the bottom supporting strip 113 includes a transverse supporting strip and a longitudinal supporting strip crossing each other at right angles. Specifically, the number of the transverse supporting strip and the longitudinal supporting strip can be determined according to the actual requirements, which will not be limited herein. By providing the bottom supporting strip 113, the overall intensity of the photovoltaic module floating supporting structure is further increased, which further prolongs the service life of the photovoltaic module floating supporting structure.
Certainly, multiple reinforcement supporting members 112 may be provided. Preferably, the multiple reinforcement supporting members 112 are arranged in matrix.
Further, a side surface, for forming the cooling hole 4, of the floating body 1 is provided with an inner sidewall reinforcing rib 15. Preferably, the inner sidewall reinforcing rib 15 is arranged transversely, multiple inner sidewall reinforcing ribs 15 are provided, and the multiple inner sidewall reinforcing ribs 15 are distributed at equal intervals in a peripheral direction of the cooling hole 4. Preferably, the inner sidewall reinforcing rib 15 is arranged horizontally, and the service life of the floating body 1 is effectively prolonged by providing the inner sidewall reinforcing ribs 15.
Further, as shown in
The connecting lug 3 has several anti-reverse rotating holes 32, each of the anti-reverse rotating holes 32 has a step-shaped side wall, to prevent the free rotation of the bolt set and achieve the purpose of preventing loosening of the connection structure. Preferably, the anti-reverse rotating holes 32 are distributed along a peripheral direction of the connecting lug positioning hole 31 of the connecting lug 3.
As shown in
The floating body 1 has an approximate rectangular structure as a whole, and the floating body has a simple configuration, is easy to manufacture and easy to control the quality. The components of the floating body 1 are simple and can be mounted fast.
On the basis of the above solutions, it is preferable that the upper surface of the floating body 1 includes an arc-shaped reinforcing surface 16 recessed toward the center of the upper surface of the floating body 1 and a flat surface 17 surrounding the periphery of the arc-shaped reinforcing surface 16, and the flat surface 17 is smoothly connected to a side portion of the arc-shaped reinforcing surface 16. The upper surface of the floating body 1 has the arc-shaped reinforcing surface 16, which improves the bending resistance of the upper surface of the floating body 1 which eliminates the swelling of the upper surface of the floating body 1 caused by the temperature rise, and the swelling may cause deviation of the positioning dimension. The provision of the flat surface 17 facilitates the transportation of the photovoltaic module floating supporting structures in the stacked state, and the bottom of an upper photovoltaic module floating supporting structure corresponds to the flat surface 17 of a lower photovoltaic module floating supporting structure, to prevent an irreversible deformation of the photovoltaic module floating supporting structure in the process of transportation, thereby improving the stability of the transportation and facilitating the transportation of the photovoltaic module floating supporting structures which are bound together.
As shown in
The above embodiments are described in a progressive manner. Each of the embodiments is mainly focused on describing its differences from other embodiments, and references may be made among these embodiments with respect to the same or similar portions among these embodiments.
Based on the above description of the disclosed embodiments, the person skilled in the art is capable of carrying out or using the present application. It is obvious for the person skilled in the art to make many modifications to these embodiments. The general principle defined herein may be applied to other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to these embodiments illustrated herein, but should be defined by the broadest scope consistent with the principle and novel features disclosed herein.
Number | Date | Country | Kind |
---|---|---|---|
201720873651.0 | Jul 2017 | CN | national |
201721275446.0 | Sep 2017 | CN | national |