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CN-121990123-A - Rigidity-adjustable stretching integral floating type photovoltaic system based on air sac type pressure regulation and control method

CN121990123ACN 121990123 ACN121990123 ACN 121990123ACN-121990123-A

Abstract

The invention belongs to the field of offshore new energy and space structure engineering, and particularly discloses an adjustable rigidity stretching integral floating type photovoltaic system based on air sac type pressure regulation and control and a control method, wherein the photovoltaic system comprises a stretching bearing structure, and the stretching bearing structure comprises a plurality of hinging rod assemblies and rope members connected with the hinging rod assemblies; the photovoltaic module comprises a tension bearing structure, a floating body, a photovoltaic module hanging unit, an air bag type constant tension module and a hinge rod assembly, wherein the floating body is arranged at the bottom of the tension bearing structure, the photovoltaic module hanging unit is matched with the tension bearing structure and used for bearing the photovoltaic module, the air bag type constant tension module is connected with the cable member and comprises an air bag, and the tension level of the cable member can be changed by adjusting the internal pressure of the air bag, so that the equivalent rigidity of the hinge rod assembly is adjusted. The invention can realize the adjustment of the equivalent rigidity of the whole structure so as to improve the adaptability and the structural safety of the floating type photovoltaic structure to the ocean environment load.

Inventors

  • WEI YANJI
  • XIN CHUANLONG

Assignees

  • 宁波东方理工大学

Dates

Publication Date
20260508
Application Date
20260304

Claims (10)

  1. 1. The utility model provides an adjustable rigidity stretch-draw whole floating photovoltaic system based on gasbag formula pressure regulation and control which characterized in that includes: A tension bearing structure comprising a plurality of articulated rod assemblies (10) and a cable member connected to the articulated rod assemblies (10); A floating body (19) arranged at the bottom of the tension bearing structure; the photovoltaic module hanging unit is matched with the tension bearing structure and used for bearing a photovoltaic module; The airbag type constant tension assembly (40) is connected with the cable member, the airbag type constant tension assembly (40) comprises an airbag (41), and the tension level of the cable member can be changed by adjusting the internal pressure of the airbag (41), so that the equivalent rigidity of the hinged rod assembly (10) is adjusted.
  2. 2. The photovoltaic system of claim 1, wherein the photovoltaic system is configured to, The airbag type constant tension assembly (40) is arranged between the hinged rod assembly (10) and the floating body (19); An upper baffle (42) and a lower baffle (43) are respectively arranged on the upper side and the lower side of the air bag (41), the air bag (41) can expand or contract to drive the lower baffle (43) to be far away from or close to the upper baffle (42), and the lower baffle (43) is connected with the rope member.
  3. 3. The photovoltaic system of claim 2, wherein the photovoltaic system is configured to, The air bag type constant tension assembly (40) is provided with a guide rod (45), one end of the guide rod (45) penetrates through the upper baffle plate (42) and is connected with the lower baffle plate (43), and the other end of the guide rod (45) is matched with the rope member.
  4. 4. The photovoltaic system of claim 1, wherein the photovoltaic system is configured to, The hinge rod assembly (10) comprises pressed rod pieces which are sequentially hinged and matched, the tail ends of the pressed rod pieces which are hinged and matched are hinged ends, and the tail ends of the pressed rod pieces which are not involved in the hinge are free ends; The hinge rod assemblies (10) are arranged in a vertically staggered manner, a plurality of groups of hinge rod assemblies (10) are inserted into each other to form a net structure, so that the hinge end positioned above in one adjacent hinge rod assembly (10) is opposite to the hinge end positioned below in the other adjacent hinge rod assembly (10), and the hinge end positioned below in the other adjacent hinge rod assembly (10) is opposite to the hinge end positioned above in the other adjacent hinge rod assembly (10); The cable member comprises an upper layer cable (14), a lower layer cable (15), an edge cable and a tensioning cable (16), wherein the upper layer cable (14) is used for connecting the hinge ends positioned above in the hinge rod assembly (10), the lower layer cable (15) is used for connecting the hinge ends positioned below in the hinge rod assembly (10), the edge cable is used for connecting the free ends in the hinge rod assembly (10), and the tensioning cable (16) is used for connecting the hinge ends oppositely arranged up and down in the hinge rod assembly (10).
  5. 5. The photovoltaic system of claim 4, wherein the photovoltaic system is configured to, The hinge rod assembly (10) is characterized in that the hinge end positioned below the hinge rod assembly is connected with a floating body (19), and the hinge end positioned above the hinge rod assembly (10) is matched with the photovoltaic assembly hanging unit.
  6. 6. The photovoltaic system of claim 4, wherein the photovoltaic system is configured to, Two tension bearing structures arranged adjacently are hinged and matched through a lap joint rod (60); The lap joint rod (60) is used for connecting the free end of the edge connecting rod (11) positioned above in one of the tension bearing structures with the hinged end positioned above in the other tension bearing structure along the arrangement direction of the two tension bearing structures, or connecting the free end of the edge connecting rod (11) positioned below in one of the tension bearing structures with the hinged end positioned below in the other tension bearing structure along the arrangement direction of the two tension bearing structures.
  7. 7. The photovoltaic system of claim 4, wherein the photovoltaic system is configured to, In the hinge rod assembly (10), an upper hinge seat (20) is arranged at the upper hinge end, and in the hinge rod assembly (10), a lower hinge seat (30) is arranged at the lower hinge end.
  8. 8. The photovoltaic system of claim 7, wherein the photovoltaic system is configured to, A first central connecting hole (21) and a first edge connecting hole (22) are arranged on one side, far away from the lower hinge seat (30), of the upper hinge seat (20), the first central connecting hole (21) is used for being connected with an upper layer rope (14), and the first edge connecting hole (22) is used for being connected with an edge rope or a photovoltaic module hanging unit; The upper hinging seat (20) is provided with a second center connecting hole (23) and a second edge connecting hole (24) at one side close to the lower hinging seat (30), the second center connecting hole (23) is used for being connected with the tensioning rope (16), and the second edge connecting hole (24) is used for being matched with the compression bar.
  9. 9. The photovoltaic system of claim 7, wherein the photovoltaic system is configured to, The lower hinge seat (30) is provided with a sliding shaft hole (34) for being matched with the tensioning rope (16); a third connecting edge connecting hole (31) is arranged on one side of the lower hinging seat (30) close to the upper hinging seat (20) and is used for being matched with the compression bar piece; A fourth central connecting hole (32) and a fourth edge connecting hole (33) are arranged on one side, far away from the upper hinging seat (20), of the lower hinging seat (30), the fourth central connecting hole (32) is used for being connected with a lower layer rope (15), and the fourth edge connecting hole (33) is used for being connected with an edge rope.
  10. 10. A method of controlling a photovoltaic system according to claim 1, comprising the steps of: Setting a preset number of tension bearing structures and placing the tension bearing structures in water; the floating body (19) is utilized to provide buoyancy, and the hinged rod assembly (10) tends to be unfolded under the action of gravity and buoyancy of the tension bearing structure, the air bag type constant tension assembly (40) is connected with the cable components, and the tension of the cable components connected with the air bag type constant tension assembly is regulated through the air bag type constant tension assembly (40) to realize the unfolding and shaping of the tension bearing structure; the cable component connected with the air bag type constant tension component (40) is separated, and meanwhile, the hinging rod component (10) in the tension bearing structure is folded inwards, so that the tension bearing structure is folded.

Description

Rigidity-adjustable stretching integral floating type photovoltaic system based on air sac type pressure regulation and control method Technical Field The invention belongs to the field of offshore new energy and space structure engineering, and particularly relates to an adjustable rigidity stretching integral floating type photovoltaic system based on air bag type pressure regulation and control and a control method. Background Solar photovoltaic has become a mainstream form of global renewable energy development, is widely popularized by virtue of the advantages of strong resource universality, low carbon emission and the like, but the traditional land photovoltaic system is limited by the problems of scarcity of land resources, limitation of topography conditions, unstable lighting environment and the like, and the large-scale development space is gradually narrowed. The photovoltaic power station deployed on the sea can effectively save land resources, has more superior illumination conditions and small influence on land ecology, so that the floating type offshore photovoltaic technology becomes an important development direction for breaking through the limitation of the land photovoltaic. However, the current engineering application is still not mature, the core sign is that the existing floating photovoltaic structure scheme has a plurality of defects which are difficult to overcome, the large-scale application requirement cannot be met, and as the floating photovoltaic technology extends to offshore and open sea, the structural system needs to bear complex environmental loads such as wind, wave, current and the like for a long time, the requirements on structural flexibility and stability are raised, and the limitations of the existing structure are more and more remarkable. Most of the existing mainstream floating type photovoltaic structural schemes are difficult to adapt to offshore complex environments and large-scale application requirements. The rigid truss or the maritime work platform type structure has double defects of economy and adaptability, the platform has large self-weight, needs to consume a large amount of high-strength steel and other noble metal materials, needs to rely on large-scale special equipment for transportation, hoisting and field assembly, has long construction period and large difficulty, has fixed rigidity, cannot adapt to different sea conditions, namely, the material waste is easily caused by rigidity redundancy under calm sea conditions, has insufficient wave-crossing resistance under middle and high sea conditions, is easy to directly impact a photovoltaic panel by high-speed sea waves, and causes potential safety hazards such as mechanical damage, circuit short circuit and the like. The other type is a thin film flexible floating photovoltaic scheme represented by an ultra-large area thin film floating scheme, the scheme is designed in a light-weight manner, but has extremely poor wind wave resistance, the whole structure is lack of effective rigid support, the wind wave is slightly deformed severely, the phenomenon of wave overtop occurs, meanwhile, the superposition of an offshore salt fog environment and the overtopping residual seawater can cause rapid accumulation of salt on the surface of the photovoltaic panel, the lighting efficiency is influenced, the corrosion and ageing of components are accelerated, the cleaning maintenance is required to be carried out frequently, and the operation and maintenance cost is greatly increased. In order to solve the technical dilemma, the industry begins to explore a novel structural scheme, wherein a tensioning integral structure (TENSEGRITY STRUCTURE) has the advantages of self balance, light weight, high strength, expandability and the like by virtue of a unique structure formed by a compression rod piece and a tension rope member, has been researched and applied in the fields of building structures, space structures and the like, and provides a new idea for innovation of a floating type photovoltaic structure. However, the existing tension integral structure still has two core problems, so that the structure cannot be directly applied to the field of offshore floating type photovoltaics, firstly, the structure is generally of a rigid fixed design, the integral mechanical property is mainly dependent on initial geometric configuration and pretension setting, dynamic adjustment is difficult to be carried out according to offshore complex and changeable wind, wave and current environments in the service process, secondly, the existing tension integral structure does not have relevant application of offshore floating type photovoltaics, and lacks special adaptive design aiming at offshore severe environments and photovoltaic assembly installation and operation requirements, and cannot be directly adapted to the use requirements of a floating type offshore photovoltaic system. In addition, although some schemes in the p