Photovoltaic cable for water photovoltaic power generation system

Abstract

The invention discloses a photovoltaic cable for an overwater photovoltaic power generation system in the technical field of photovoltaic cables, and the photovoltaic cable comprises a cable and a plurality of floating plate assemblies, each floating plate assembly comprises a first floating plate and a second floating plate, the first floating plate is provided with four fixed seats and four first supporting plates, the second floating plate is provided with four fixed seats and a second supporting plate, and the first supporting plates and the second supporting plates are arranged on the cable. The floating plate assemblies are arranged in the length direction of the cable, the contact surface with the water surface is increased through the floating plate assemblies, the water photovoltaic cable is fixed and supported, and the cable is installed through the limiting plates, the installation bolts and other structures; when the first supporting plate and the second supporting plate are used, the positions of the first supporting plate and the second supporting plate are limited through the fixing base so that the first supporting plate and the second supporting plate can be kept in the horizontal state, the first floating plate, the second floating plate, the first supporting plate and the second supporting plate are fixed into a whole through the limiting plate and other structures, and the overall structure is more stable. The number of the first floating plates and the number of the second floating plates in each floating plate assembly can be increased according to using requirements, and assembling is flexible.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic cables, in particular to a photovoltaic cable for a water photovoltaic power generation system. Background Art

[0002] Water-based photovoltaic power stations mainly use water areas such as ponds, lakes, reservoirs, and reservoirs to set up floating platforms and other structures on the water surface, and install corresponding photovoltaic equipment on them. There is no need to dig support foundations and cable trenches, and there is no construction of on-site roads, which greatly reduces ground excavation and is conducive to soil and water conservation. In addition, the water surface is relatively open, which can effectively avoid the restriction of shadows on the efficiency of photovoltaic modules. The solar irradiation area is uniform and the illumination time is long. In addition, water has a cooling effect on solar panels, which can inhibit the rise of the surface temperature of the components.

[0003] The high voltage electricity output by the water photovoltaic power generation system is transmitted to the shore through cables. Therefore, the cable structure generally needs to include a floating structure to provide water support for the cable. Patent application number CN202320501208.6 is a floating body for floating photovoltaic power station cables. Its structure includes a floating body and a cable rack. A set of side wings are provided on the outside of the floating body. A set of springs are provided on both sides of the cable rack and the floating body. The cable passes through the cable rack and is fixed by the movable card plate thereon to provide buoyancy support for the cable.

[0004] However, when the above-mentioned float is in use, the contact area between the float and the side wings and the water surface is small, and part of the side wings are located above the structure and cannot play a corresponding role, thereby reducing the supporting effect of the water on the float and the cable structure.

[0005] Based on this, the present invention designs a photovoltaic cable for a water photovoltaic power generation system to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a photovoltaic cable for a water photovoltaic power generation system to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: A photovoltaic cable for a water photovoltaic power generation system comprises a cable line and a plurality of floating plate assemblies evenly arranged along the length direction of the cable line, wherein the cable line is installed in the middle of the floating plate assembly; The floating plate assembly includes a first floating plate and a second floating plate symmetrically arranged on the left and right sides of the cable line, two fixing seats are symmetrically fixed to both sides of the first floating plate and the second floating plate, a first support plate is arranged at positions corresponding to the four fixing seats on the first floating plate, a second support plate is arranged correspondingly on the second floating plate, and the first support plate and the second support plate are rotatably connected to the corresponding fixing seats respectively, the outer side edge spacing of the front and rear two first support plates is smaller than the inner side edge spacing of the front and rear two second support plates, and the side walls of the first support plate and the second support plate on the front side are in sliding contact, and the side walls of the first support plate and the second support plate on the rear side are in sliding contact; The first support plate and the second support plate located outside the first floating plate and the second floating plate are located on the top of the fixed seat, and the first support plate and the second support plate located between the first floating plate and the second floating plate are rotated to the bottom of the fixed seat and are in a horizontal state, and the top of the inner section contacts the bottom of the fixed seat; The cable is located on the first and second inner support plates, and two inverted U-shaped limit plates are provided on the front and back above. End plates are symmetrically fixed on both sides of the bottom of the limit plates. Four mounting bolts are symmetrically arranged on the two end plates, and two mounting threaded holes are correspondingly arranged on the first and second support plates. The limit plates are fixed to the first and second support plates by mounting bolts and mounting threaded holes.

[0008] Preferably, the cable includes a center line, three insulating core wires are evenly arranged on the outside of the center line, a tightening tape is commonly arranged on the outside of the three insulating core wires, a first filler is arranged between the insulating core wires and the tightening tape, an outer sleeve of the tightening tape is provided with an outer sheath, a second filler is arranged between the outer sheath and the tightening tape, and a waterproof layer is arranged on the outside of the outer sheath.

[0009] Preferably, a plurality of reinforcing ribs are evenly arranged in the second filler along the circumferential direction, and the reinforcing ribs are glass fiber reinforced plastic round rods.

[0010] Preferably, the first filler and the second filler are made of foamed polyolefin material.

[0011] Preferably, the waterproof layer is made of polyurethane material, and the outer sheath is made of radiation cross-linked polyolefin material.

[0012] Preferably, the insulating layer of the insulating core wire is made of radiation cross-linked polyolefin material.

[0013] Preferably, a buoyancy sleeve is provided on the outer side of the cable, the buoyancy sleeve is located between two adjacent floating plate assemblies, and a plurality of air cavities are evenly provided in the buoyancy sleeve along the circumferential direction.

[0014] Preferably, a slide bar and a slide groove are respectively provided on opposite sides of the first support plate and the second support plate, and the slide bar on the first support plate is slidably connected to the slide groove on the second support plate.

[0015] Preferably, a V-shaped limiting groove is provided on the top of the first support plate and the second support plate, the bottom of the cable is located in the limiting groove, and a plurality of spring grooves are evenly provided on the upper inner side surface of the limiting plate. A pressure block is connected to the spring groove through a plurality of evenly arranged springs, and the outer end of the pressure block contacts the upper part of the cable.

[0016] Preferably, a circular fixing platform is installed on the cable line at the outer side of the two second supporting plates on the same floating plate assembly, and a baffle is connected to the inner side of the fixing platform through a spring, and the baffle is located on the outer side of the second supporting plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention arranges a plurality of floating plate assemblies along the length direction of the cable, and installs the cable on the first support plate and the second support plate through structures such as a limit plate and a mounting bolt, and increases the contact surface with the water surface through the first floating plate and the second floating plate, so that the cable can be located on the water surface, thereby providing a fixing and supporting effect for the water photovoltaic cable through the floating plate assembly; 2. When the first support plate and the second support plate are used, the ends of the first support plate and the second support plate are located at the bottom of the fixing seat, and the positions of the first support plate and the second support plate are limited by the fixing seat to keep them in a horizontal state, and the first floating plate, the second floating plate, the first support plate and the second support plate are fixed into a whole through structures such as a limit plate, so that the overall structure is more stable and the supporting effect on the cable is ensured; 3. The present invention can increase the number of first floating plates and second floating plates in each floating plate assembly, assemble them at intervals, and install each cable between adjacent first floating plates and second floating plates, so that they can be assembled flexibly according to usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the structure of A of the present invention; Figure 3 A schematic diagram of the positions of the first support plate and the second support plate of the present invention; Figure 4 It is a structural schematic diagram of the cable of the present invention; Figure 5 It is a schematic diagram of the structure of the buoyancy sleeve of the present invention; Figure 6 It is a structural schematic diagram of the limiting plate of the present invention; Figure 7 It is a schematic diagram of the side structure of the first support plate and the second support plate of the present invention; Figure 8 It is a structural schematic diagram of the baffle of the present invention; Fig. 9 This is a schematic diagram of the state of assembly and use of the present invention.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1-cable line, 101-insulated core wire, 102-center line, 103-first filler, 104-tightening tape, 105-reinforcement rib, 106-second filler, 107-outer sheath, 108-waterproof layer; 2-first floating plate, 201-second floating plate, 202-fixed seat, 203-first supporting plate, 204-second supporting plate, 205-installation threaded hole, 206-limiting groove, 207-sliding bar, 208-sliding groove; 3-limiting plate, 301-end plate, 302-mounting bolt, 303-spring slot, 304-pressing block; 4-buoyancy sleeve, 401-air cavity; 5-fixed table, 501-baffle. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example 1

[0022] Please refer to the accompanying drawings, the present invention provides a technical solution: A photovoltaic cable for a water photovoltaic power generation system comprises a cable line 1 and a plurality of floating plate assemblies evenly arranged along the length direction of the cable line 1, wherein the cable line 1 is installed in the middle of the floating plate assembly; The floating plate assembly includes a first floating plate 2 and a second floating plate 201 symmetrically arranged on the left and right sides of the cable 1, two fixing seats 202 are symmetrically fixed to both sides of the first floating plate 2 and the second floating plate 201, a first support plate 203 is provided on the first floating plate 2 at positions corresponding to the four fixing seats 202 thereon, a second support plate 204 is correspondingly provided on the second floating plate 201, and the first support plate 203 and the second support plate 204 are rotatably connected to the corresponding fixing seats 202 respectively, the outer side edge spacing of the front and rear two first support plates 203 is smaller than the inner side edge spacing of the front and rear two second support plates 204, and the side walls of the front first support plate 203 and the second support plate 204 are in sliding contact, and the side walls of the rear first support plate 203 and the second support plate 204 are in sliding contact; The first support plate 203 and the second support plate 204 located outside the first floating plate 2 and the second floating plate 201 are located on the top of the fixed seat 202, and the first support plate 203 and the second support plate 204 located between the first floating plate 2 and the second floating plate 201 are rotated to the bottom of the fixed seat 202 and are in a horizontal state, and the top of the inner section is in contact with the bottom of the fixed seat 202; The cable 1 is located on the inner first support plate 203 and the second support plate 204, and two inverted U-shaped limit plates 3 are provided on the front and back above. End plates 301 are symmetrically fixed on both sides of the bottom of the limit plates 3. Four mounting bolts 302 are symmetrically provided on the two end plates 301, and two mounting threaded holes 205 are correspondingly provided on the first support plate 203 and the second support plate 204. The limit plates 3 are fixed to the first support plate 203 and the second support plate 204 by the mounting bolts 302 and the mounting threaded holes 205.

[0023] When laying the photovoltaic cable on water, a floating plate assembly is arranged on the cable 1 along its length direction, and the cable 1 is installed on the first support plate 203 and the second support plate 204 through structures such as the limit plate 3 and the mounting bolts 302, so as to complete the installation of the cable 1 and the floating plate assembly; When the first support plate 203 and the second support plate 204 are in use, their ends are rotated to the bottom of the fixed seat 202, and are restricted by the ends and the fixed seat 202 to maintain a horizontal state, and the first floating plate 2, the second floating plate 201, the first support plate 203 and the second support plate 204 are fixed into a whole through structures such as the limiting plate 3, thereby increasing the contact area with the water surface and providing a fixed support for the cable 1, wherein the first support plate 203 and the second support plate 204 adopt the same material structure as the first floating plate 2 and the second floating plate 201 to increase buoyancy support.

[0024] When multiple parallel cables 1 need to be laid, the number of first floating plates 2 and second floating plates 201 can be increased in each group of floating plate assemblies according to usage needs, and they can be assembled at intervals, and each cable 1 can be installed between adjacent first floating plates 2 and second floating plates 201, so that they can be flexibly assembled according to usage needs.

[0025] Among them, the cable line 1 includes a center line 102, three insulating core wires 101 are evenly arranged on the outside of the center line 102, and a tightening tape 104 is commonly arranged on the outside of the three insulating core wires 101, and a first filler 103 is arranged between the insulating core wire 101 and the tightening tape 104, an outer sheath 107 is sleeved on the outer side of the tightening tape 104, a second filler 106 is arranged between the outer sheath 107 and the tightening tape 104, and a waterproof layer 108 is arranged on the outside of the outer sheath 107. By arranging the first filler 103 and the second filler 106, the weight of the cable line 1 is reduced, the buoyancy is increased, and a certain buffer protection effect is played, and the outer sheath 107 and the waterproof layer 108 provide protection and waterproof functions, so that the photovoltaic cable can be laid on the water. Example 2

[0026] The structure of this embodiment is basically the same as that of the first embodiment, except that a plurality of reinforcing ribs 105 are evenly arranged in the circumferential direction in the second filler 106 to improve the overall strength of the cable 1. The reinforcing ribs 105 are glass fiber reinforced plastic round rods, which have the characteristics of smaller specific gravity and higher strength than the steel wires commonly used in cables, and are suitable for offshore photovoltaic cables.

[0027] The first filler 103 and the second filler 106 are made of foamed polyolefin material. Since the foamed polyolefin material is light in weight and has excellent mechanical impact resistance and waterproof effects, the first filler 103 and the second filler 106 made of this material can effectively reduce the damage to the insulating core wire 101 caused by physical collision, and at the same time can reduce the self-weight of the cable 1. When the cable 1 is laid and operated, it can float on the water surface, effectively reducing the contact area between the cable 1 and the water.

[0028] The waterproof layer 108 is made of polyurethane material, and the outer sheath 107 is made of radiation cross-linked polyolefin material.

[0029] The insulating layer of the insulated core wire 101 is made of radiation cross-linked polyolefin material. Example 3

[0030] The structure of this embodiment is basically the same as that of the first embodiment, except that a slide bar 207 and a slide groove 208 are respectively provided on the opposite sides of the first pallet 203 and the second pallet 204, and the slide bar 207 on the first pallet 203 is slidably connected to the slide groove 208 on the second pallet 204, and the relative position of the first pallet 203 and the second pallet 204 is further limited by the slide bar 207 and the slide groove 208, so that the positions of the first pallet 203, the second pallet 204 and the cable 1 thereon are more stable.

[0031] A V-shaped limiting groove 206 is provided on the top of the first support plate 203 and the second support plate 204, and the bottom of the cable 1 is located in the limiting groove 206, so as to quickly determine the position of the cable 1 and facilitate subsequent fixation. A plurality of spring grooves 303 are evenly provided on the upper part of the inner side surface of the limiting plate 3, and a pressure block 304 is connected to the spring groove 303 through a plurality of evenly arranged springs, and the outer end of the pressure block 304 contacts the upper part of the cable 1, thereby improving the clamping effect on the cable 1. Example 4

[0032] The structure of this embodiment is basically the same as that of the first embodiment, except that a buoyancy sleeve 4 is provided on the outside of the cable 1, the buoyancy sleeve 4 is located between two adjacent floating plate assemblies, and a plurality of air cavities 401 are evenly provided in the buoyancy sleeve 4 along the circumferential direction, which play a role in supplementing buoyancy and improving the position stability of the cable 1 located between the two floating plate assemblies. Example 5

[0033] The structure of this embodiment is basically the same as that of the first embodiment, except that a circular fixed platform 5 is installed on the outer side of the two second support plates 204 on the same floating plate assembly corresponding to the cable 1, and a baffle 501 is connected to the inner side of the fixed platform 5 through a spring, and the baffle 501 is located on the outer side of the second support plate 204. Through the fixed platform 5 and the baffle 501, the corresponding section of the cable 1 can be quickly clamped between the two second support plates 204 to facilitate subsequent positioning operations, etc.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", 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 representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A photovoltaic cable for a water photovoltaic power generation system, comprising a cable line (1) and a plurality of floating plate assemblies evenly arranged along the length direction of the cable line (1), wherein the cable line (1) is installed in the middle of the floating plate assembly, and is characterized in that: The floating plate assembly comprises a first floating plate (2) and a second floating plate (201) symmetrically arranged on the left and right sides of the cable (1); two fixing seats (202) are symmetrically fixed to both sides of the first floating plate (2) and the second floating plate (201); a first support plate (203) is provided at positions corresponding to the four fixing seats (202) on the first floating plate (2); a second support plate (204) is provided correspondingly on the second floating plate (201); the first support plate (203) and the second support plate (204) are respectively rotatably connected to the corresponding fixing seats (202); the outer side edge spacing of the front and rear two first support plates (203) is smaller than the inner side edge spacing of the front and rear two second support plates (204); the side walls of the front first support plate (203) and the second support plate (204) are in sliding contact; and the side walls of the rear first support plate (203) and the second support plate (204) are in sliding contact; The first support plate (203) and the second support plate (204) located outside the first floating plate (2) and the second floating plate (201) are located on the top of the fixed seat (202), and the first support plate (203) and the second support plate (204) located between the first floating plate (2) and the second floating plate (201) are rotated to the bottom of the fixed seat (202) and are in a horizontal state, and the top of the inner section is in contact with the bottom of the fixed seat (202); The cable (1) is located on the first support plate (203) and the second support plate (204) on the inner side, and two inverted U-shaped limiting plates (3) are arranged on the front and rear upper sides, and end plates (301) are symmetrically fixed on both sides of the bottom of the limiting plates (3), and four mounting bolts (302) are symmetrically arranged on the two end plates (301), and two mounting threaded holes (205) are correspondingly arranged on the first support plate (203) and the second support plate (204), and the limiting plates (3) are fixed on the first support plate (203) and the second support plate (204) through the mounting bolts (302) and the mounting threaded holes (205).

2. The photovoltaic cable for the water photovoltaic power generation system according to claim 1, characterized in that: The cable (1) comprises a center line (102), three insulating core wires (101) are evenly arranged on the outside of the center line (102), a tightening band (104) is commonly arranged on the outside of the three insulating core wires (101), a first filler (103) is arranged between the insulating core wires (101) and the tightening band (104), an outer sheath (107) is arranged on the outer side of the tightening band (104), a second filler (106) is arranged between the outer sheath (107) and the tightening band (104), and a waterproof layer (108) is arranged on the outer side of the outer sheath (107).

3. The photovoltaic cable for the water photovoltaic power generation system according to claim 2, characterized in that: A plurality of reinforcing ribs (105) are evenly arranged in the second filler (106) along the circumferential direction, and the reinforcing ribs (105) are glass fiber reinforced plastic round rods.

4. The photovoltaic cable for the water photovoltaic power generation system according to claim 2, characterized in that: The first filler (103) and the second filler (106) are made of foamed polyolefin material.

5. The photovoltaic cable for the water photovoltaic power generation system according to claim 2, characterized in that: The waterproof layer (108) is made of polyurethane material, and the outer sheath (107) is made of radiation cross-linked polyolefin material.

6. The photovoltaic cable for the water photovoltaic power generation system according to claim 2, characterized in that: The insulating layer of the insulating core wire (101) is made of radiation cross-linked polyolefin material.

7. The photovoltaic cable for a water photovoltaic power generation system according to claim 1, characterized in that: A buoyancy sleeve (4) is provided on the outer side of the cable (1); the buoyancy sleeve (4) is located between two adjacent floating plate assemblies; and a plurality of air cavities (401) are evenly provided in the buoyancy sleeve (4) along a circumferential direction.

8. The photovoltaic cable for a water photovoltaic power generation system according to claim 1, characterized in that: A sliding bar (207) and a sliding groove (208) are respectively provided on opposite sides of the first support plate (203) and the second support plate (204), and the sliding bar (207) on the first support plate (203) is slidably connected to the sliding groove (208) on the second support plate (204).

9. The photovoltaic cable for a water photovoltaic power generation system according to claim 1, characterized in that: A V-shaped limiting groove (206) is provided on the top of the first supporting plate (203) and the second supporting plate (204), the bottom of the cable (1) is located in the limiting groove (206), a plurality of spring grooves (303) are evenly provided on the upper part of the inner side surface of the limiting plate (3), a pressure block (304) is connected to the spring groove (303) via a plurality of evenly arranged springs, and the outer end of the pressure block (304) is in contact with the upper part of the cable (1).

10. The photovoltaic cable for a water photovoltaic power generation system according to claim 1, characterized in that: A circular fixing platform (5) is installed on the cable (1) at an outer position corresponding to two second supporting plates (204) on the same floating plate assembly, and a baffle (501) is connected to the inner side of the fixing platform (5) via a spring, and the baffle (501) is located on the outer side of the second supporting plate (204).

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