Highly waterproof and salt mist resistant photovoltaic cable for water photovoltaic power station

Abstract

The invention provides a highly waterproof and salt mist resistant photovoltaic cable for an overwater photovoltaic power station, relates to a cable technology, and particularly discloses a plurality of core wire structures, a first protective sleeve and a steel wire, and the plurality of core wire structures are arranged in the first protective sleeve in a penetrating manner; the steel wire is arranged among the plurality of core wire structures, a blocking structure is installed on the outer side wall of the first protective sleeve, the blocking structure comprises a blocking sleeve, an annular blocking cavity is formed in the inner wall of the blocking sleeve, a plurality of blocking pieces are arranged in the blocking cavity, and the blocking cavity is divided into a plurality of blocking spaces by the blocking pieces; a plurality of buffer mechanisms are mounted between the first protective sleeve and the barrier sleeve, and a plurality of fixing structures for fixing a plurality of core wire structures are mounted in the first protective sleeve; the blocking structure comprises an annular blocking chamber and a plurality of blocking sheets, so that multilayer blocking is formed, moisture and salt mist are effectively prevented from permeating, and the service life of the cable is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and more particularly, to a highly waterproof and salt - fog - resistant photovoltaic cable for a floating photovoltaic power station. Background Art

[0002] With the development of submarine optical - electrical composite cables, the electricity used on offshore oil platforms can first be transmitted from land through submarine optical cables, and then transferred to the platform through power cables for marine electrical equipment, and then supplied to each system for application through transformer conversion, solving the disadvantages of high energy consumption, high noise, and large space occupied by the previous power generation by generator sets.

[0003] With the development of modern construction, higher requirements are put forward for wires and cables. The previous cables are prone to abrasion during use, the insulating layer is prone to breakdown, with poor reliability and short service life, and need to be frequently replaced, resulting in a relatively high cost for maintenance and repair.

[0004] Moreover, with the continuous improvement of the electrification and automation levels of ships, the usage amount of marine cables is increasing. The existing marine cables generally have problems such as poor waterproof and corrosion - resistant properties and weak salt - fog resistance. Summary of the Invention

[0005] The purpose of the present invention is to provide a highly waterproof and salt - fog - resistant photovoltaic cable for a floating photovoltaic power station, which can solve the problems raised in the above - mentioned background art in view of the deficiencies of the prior art.

[0006] The technical solution of the present invention is realized as follows:

[0007] The invention provides a highly waterproof and salt - fog - resistant photovoltaic cable for a floating photovoltaic power station, including a plurality of core wire structures, a first protective sleeve, and steel wires. The plurality of core wire structures are all disposed through the first protective sleeve;

[0008] The steel wires are disposed between the plurality of core wire structures. A barrier structure is installed on the outer side wall of the first protective sleeve. The barrier structure includes a barrier sleeve. An annular barrier chamber is formed on the inner wall of the barrier sleeve. A plurality of barrier sheets are provided in the barrier chamber. The barrier sheets divide the barrier chamber into a plurality of barrier spaces. A plurality of buffer mechanisms are installed between the first protective sleeve and the barrier sleeve. A plurality of fixing structures for fixing the plurality of core wire structures are installed in the first protective sleeve.

[0009] In some technical solutions of the present invention, a plurality of adsorption layers are installed in each of the barrier spaces. Both sides of the adsorption layer are connected to the barrier sheets on the same side as it.

[0010] In some technical schemes of the present invention, two limiting members are arranged in pairs in a fixed structure, and the two limiting members are ring-shaped after being spliced, and any core wire structure is located between the two limiting members in any fixed structure; a spring sheet is installed between any two adjacent fixed structures, and the two spring sheets located on both sides of the same fixed structure are detachably connected, and limiting grooves are provided on the opposite side walls of any two adjacent spring sheets, and the fixed structure is located within the area surrounded by the two limiting grooves; the spring sheet abuts against the inner wall of the first protective cover.

[0011] In some technical solutions of the present invention, the buffer mechanism includes two buffer members arranged in pairs, both of which are arranged between the outer wall of the first protective sleeve and the inner wall of the barrier sleeve, one end of the buffer member is connected to the first protective sleeve, and the other end of the buffer member is connected to the barrier sleeve.

[0012] In some technical solutions of the present invention, a second protective sleeve is installed on the inner wall of the barrier sleeve, and a plurality of isolation sheets are installed between the second protective sleeve and the first protective sleeve, and any isolation sheet is connected to a buffer member in any buffer mechanism.

[0013] In some technical solutions of the present invention, the core wire structure includes a core wire and an inner protective sleeve, and the core wire is inserted into the inner protective sleeve.

[0014] In some technical solutions of the present invention, a support structure is installed between any two adjacent core wire structures.

[0015] In some technical solutions of the present invention, the support structure includes an elongated support bar, in which an installation chamber is opened along its extension direction, a plurality of airbags are arranged in the installation chamber along the extension direction of the support bar, and a support sheet is installed between any two adjacent airbags.

[0016] In some technical solutions of the present invention, an outer protective sleeve is provided on the outer side wall of the barrier sleeve, and a mesh-shaped covering structure is installed between the outer protective sleeve and the barrier sleeve.

[0017] In some technical solutions of the present invention, an armor layer is provided on the inner side wall of the inner protective sleeve.

[0018] Compared with the prior art, the present invention has at least the following advantages or beneficial effects:.

[0019] The barrier structure includes an annular barrier chamber and multiple barrier sheets, forming a multi-layer barrier to effectively prevent the penetration of moisture and salt spray, and extend the service life of the cable; the combination of the steel wire and the core wire structure forms a twisted wire harness, providing the function of an installation skeleton, ensuring the toughness of the cable, and preventing breakage and stress fatigue; the design of the fixing structure and the spring piece fixes the core wire structure, prevents the destruction of the structural strength during the twisting process, and maintains the flexibility of the cable; the design of the buffer mechanism and the isolation chamber improves the impact resistance of the cable in harsh environments and prevents the internal structure from breaking; the inner protective sleeve and the armor layer provide secondary protection for the core wire, enhancing the mechanical strength and the anti-electromagnetic interference ability; the outer protective sleeve and the mesh covering structure enhance the overall strength and prevent aging; the high mechanical strength of the armor layer resists external physical damage and ensures the long-term stable operation of the cable.

[0020] In summary, through the multi-layer protection and enhanced structure design, the present invention significantly improves the waterproof, salt spray resistant, tensile strength and service life of the cable for the floating photovoltaic power station, ensuring its reliability and stability in the harsh marine environment. Brief Description of the Drawings

[0021] Figure 1 It is the three-dimensional structure of the first perspective of the cable structure in the present invention.

[0022] Figure 2 It is the three-dimensional structure diagram of the second perspective of the cable structure in the present invention.

[0023] Figure 3 It is the schematic diagram of the radial sectional structure of the cable structure in the present invention.

[0024] Figure 4 It is the schematic diagram of the installation structure of the core wire structure in the present invention.

[0025] Figure 5 It is the schematic diagram of the axial sectional structure of the cable structure in the present invention.

[0026] Figure 6 It is the schematic diagram of the sectional structure of the support bar in the present invention.

[0027] Reference Signs:

[0028] 1. First protective sleeve; 2. Steel wire; 3. Barrier sleeve; 4. Barrier sheet; 5. Second protective sleeve; 6. Barrier space; 7. Buffer member; 8. Isolation sheet; 9. Limiting member; 10. Spring piece; 12. Support bar; 13. Airbag; 14. Support sheet; 15. Core wire; 16. Inner protective sleeve; 18. Outer protective sleeve. Detailed Description of the Invention

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0031] Embodiment

[0032] The present invention provides a highly waterproof and salt - fog - resistant photovoltaic cable for a floating photovoltaic power station, as Figures 1-6 shown

[0033] including a plurality of core wire 15 structures, a first protective sleeve 1, and steel wires 2. The plurality of core wire 15 structures are all disposed within the first protective sleeve 1; the first protective sleeve 1 is made of rubber material and has a good waterproof effect.

[0034] The steel wire 2 is arranged between several core wire 15 structures. The steel rope can be combined with at least 3 core wire 15 structures and twisted to form a twisted wire harness structure, which serves as an installation skeleton for the installation of the core wire 15 structures, ensuring that the cable has a certain toughness and preventing problems such as fracture during later pulling; and preventing problems such as stress fatigue from occurring in the core wires 15 and the protective layer inside the core wire 15 structures. A barrier structure is installed on the outer side wall of the first protective sleeve 1. The barrier structure includes a barrier sleeve 3. An annular barrier chamber is formed on the inner wall of the barrier sleeve 3. The barrier structure is used to prevent external moisture, salt spray and other substances from entering the first protective sleeve 1 and causing corrosion of the core wire 15 structures, thereby improving the use effect of this structure at sea. The barrier structure includes a barrier sleeve 3. An annular barrier chamber is formed on the inner wall of the barrier sleeve 3. The provided barrier chamber enables the barrier sleeve 3 to achieve the purpose of double-layer barrier, improving the barrier effect of this structure on substances such as moisture or salt spray. A number of barrier sheets 4 are arranged in the barrier chamber. The barrier sheets 4 divide the barrier chamber into multiple barrier spaces 6, so that when one barrier space 6 is damaged, it will not affect other barrier spaces 6, avoiding the spread of moisture, salt spray and other substances in the barrier chamber and causing erosion of the cable structure. A number of buffer mechanisms are installed between the first protective sleeve 1 and the barrier sleeve 3. The provided buffer structure can protect the core wire 15 structures placed inside it in the harsh marine environment, preventing the risk of fracture of the internal structure of the cable. A number of fixing structures for fixing several core wire 15 structures are installed in the first protective sleeve 1. The fixing structure is used to fix the core wire 15 structures, preventing the core wire 15 structures from being affected by electricity or transmitting signals on the first protective support sheet.

[0035] Preferably, coatings are provided on both the inner and outer surfaces of the barrier sleeve 3. The coatings are of the structural and chemical composition of graphene nano-ceramic composite materials. Base materials: high-hardness ceramic materials such as alumina and silicon carbide. The graphene reinforcing material enhances the electrical conductivity, corrosion resistance and thermal stability. The above materials are compounded to form a coating with excellent properties.

[0036] In some technical solutions of the present invention, a number of adsorption layers are installed in the barrier spaces 6. Both sides of the adsorption layer are connected to the barrier sheets 4 on the same side as it. The provided adsorption layer forms a water-blocking band in the damaged barrier space 6 to prevent moisture from entering the barrier space 6.

[0037] Preferably, the provided adsorption layers are distributed in a layered manner and have at least 3 layers. The material is made of a hydrophobic material, which can make salts crystallize on its surface. Not shown in the drawings. Hydrophobic materials include polytetrafluoroethylene (PTFE), silane-modified materials and fluorocarbon resins, etc. These materials are known for their excellent hydrophobic properties and chemical corrosion resistance.

[0038] Preferably, a hydrophobic coating is also applied on the outer protective sleeve.

[0039] In some technical solutions of the present invention, two limiting members 9 of the fixed structure are arranged in pairs. After the two limiting members 9 are spliced, they form a ring shape. The material thereof is a metal plate or a rubber material with good toughness. The two limiting members 9 that form a ring shape after being spliced are fixedly connected in the form of glue or a buckle. Any core wire 15 structure is located in the annular space between the two limiting members 9 within any fixed structure; a spring piece 10 is installed between any two adjacent fixed structures. The two spring pieces 10 located on both sides of the same fixed structure are detachably connected. Limiting grooves are provided on the opposite side walls of any two adjacent spring pieces 10. The fixed structure is located within the area surrounded by the two limiting grooves; the spring piece 10 abuts against the inner side wall of the first protective sleeve 1. The provided spring piece 10 can prevent the fixing member from moving along with the torsion of the core wire 15 structure, and avoid the problem of reduced flexibility of the cable. The environmental structure composed of at least 3 spring pieces 10 can also support the inner wall of the first protective sleeve 1.

[0040] Preferably, a limiting hole is provided in the middle of the spring piece 10, and a limiting protrusion is provided on the inner side wall of the first protective sleeve 1. A part of the limiting protrusion is embedded in the limiting hole, and the limiting protrusion is integrally formed with the inner side wall of the first protective sleeve 1. In this way, the fixed structure can be fixed in the first protective sleeve 1.

[0041] In some technical solutions of the present invention, the buffer mechanism includes two buffer members 7 arranged in pairs. Both of the two buffer members 7 are arranged between the outer side wall of the first protective sleeve 1 and the inner side wall of the barrier sleeve 3. One end of the buffer member 7 is connected to the first protective sleeve 1, and the other end of the buffer member 7 is connected to the barrier sleeve 3. A second protective sleeve 5 is installed on the inner side wall of the barrier sleeve 3. A plurality of isolation sheets 8 are installed between the second protective sleeve 5 and the first protective sleeve 1. Any one isolation sheet 8 is connected to the buffer member 7 within any one buffer mechanism.

[0042] Any two adjacent isolation sheets 8 and the second protective sleeve 5 form an isolation chamber. The provided isolation chamber is perpendicular to the barrier space 6, forming an interleaved buffer area and an area for blocking water mist and salt mist, which can further improve the buffer effect of the present structure and the blocking effect on the above two substances. And the mutually perpendicular isolation chamber and the barrier space 6 divide the cable structure into multiple barrier areas, extending the path for water mist and salt mist to enter the first protective sleeve 1, effectively blocking the problem that moisture and salt mist enter the inner wall of the cable and corrode the metal components on the inner wall of the cable, ensuring that the metal components within the present structure are in a good working state, and improving the service life of the present structure.

[0043] In some technical solutions of the present invention, the core wire 15 structure includes a core wire 15 and an inner protective sleeve 16, and the core wire 15 is disposed inside the inner protective sleeve 16. The inner protective sleeve 16 is arranged on the outer side of the core wire 15, and the material of the inner protective sleeve 16 can provide secondary protection for the core wire 15, ensuring that the core wire 15 is not easily damaged by external forces and improving its bending effect.

[0044] Preferably, a composite layer structure formed by a shielding layer and a water stop belt is further provided on the outer side wall of the inner protective sleeve 16.

[0045] In some technical solutions of the present invention, a support structure is installed between any two adjacent core wire 15 structures.

[0046] In some technical solutions of the present invention, the support structure includes a strip-shaped support bar 12. An installation chamber is formed in the support bar 12 along its extending direction, and a plurality of air bags 13 are arranged in the installation chamber along the extending direction of the support bar 12. A support piece 14 is installed between any two adjacent air bags 13. This enables the support bar 12 to have a space for buffer deformation and improves the support effect of this structure.

[0047] In some technical solutions of the present invention, an outer protective sleeve 18 is provided on the outer side wall of the barrier sleeve 3, and a net-shaped coating structure is installed between the outer protective sleeve 18 and the barrier sleeve 3. The coating structure is woven from a shape memory metal skeleton. The coating structure is used to improve the structural strength of this structure and prevent the outer protective sleeve 18 from aging prematurely under long-term heat and cold alternation. And the coating layer is in a net-shaped structure, and the heat transfer effect is not obvious.

[0048] In some technical solutions of the present invention, an armor layer is provided on the inner side wall of the inner protective sleeve 16. The armor layer is woven from metal strips or metal wires and has extremely high mechanical strength. This enables the cable to withstand greater tensile force, pressure and extrusion during use and effectively resist the damage of external physical factors. And the armor layer is made of metal and has good electrical conductivity and magnetic permeability, and can effectively absorb and reflect external electromagnetic interference signals, creating favorable conditions for signal transmission and power transmission inside the cable.

[0049] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A highly waterproof and salt-fog proof photovoltaic cable for a water photovoltaic power station, characterized in that: It comprises a plurality of core wire (15) structures, a first protective cover (1) and a steel wire (2), wherein the plurality of core wire (15) structures are all inserted into the first protective cover (1); The steel wire (2) is arranged between a plurality of the core wire (15) structures; a barrier structure is installed on the outer wall of the first protective sleeve (1); the barrier structure comprises a barrier sleeve (3); an inner wall of the barrier sleeve (3) is provided with an annular barrier chamber; a plurality of barrier sheets (4) are arranged in the barrier chamber; the barrier sheets (4) divide the barrier chamber into a plurality of barrier spaces (6); a plurality of buffer mechanisms are installed between the first protective sleeve (1) and the barrier sleeve (3); a plurality of fixing structures for fixing the plurality of core wire (15) structures are installed in the first protective sleeve (1).

2. The highly waterproof and salt-fog proof photovoltaic cable for a water photovoltaic power station according to claim 1, characterized in that: A plurality of adsorption layers are installed in the barrier space (6), and both sides of the adsorption layer are connected to the barrier sheet (4) located on the same side.

3. A highly waterproof and salt-fog proof photovoltaic cable for a water photovoltaic power station according to claim 1 or 2, characterized in that: The fixed structure has two limit members (9) arranged in pairs, and the two limit members (9) are annular after being spliced ​​together. Any one of the core wire (15) structures is located between the two limit members (9) in any one of the fixed structures. A spring sheet (10) is installed between any two adjacent fixed structures. The two spring sheets (10) located on both sides of the same fixed structure are detachably connected. Limiting grooves are provided on the opposite side walls of any two adjacent spring sheets (10). The fixed structure is located within the area surrounded by the two limiting grooves. The spring sheet (10) abuts against the inner wall of the first protective cover (1).

4. The highly waterproof and salt-fog proof photovoltaic cable for a water photovoltaic power station according to claim 3, characterized in that: The buffer mechanism comprises two buffer members (7) arranged in pairs, the two buffer members (7) being arranged between the outer wall of the first protective sleeve (1) and the inner wall of the barrier sleeve (3), one end of the buffer member (7) being connected to the first protective sleeve (1), and the other end of the buffer member (7) being connected to the barrier sleeve (3).

5. The highly waterproof and salt-fog proof photovoltaic cable for a water photovoltaic power station according to claim 4, characterized in that: A second protective sleeve (5) is installed on the inner side wall of the barrier sleeve (3), and a plurality of isolation sheets (8) are installed between the second protective sleeve (5) and the first protective sleeve (1), and any one of the isolation sheets (8) is connected to any one of the buffer components (7) in the buffer mechanism.

6. The highly waterproof and salt-fog proof photovoltaic cable for a water photovoltaic power station according to claim 3, characterized in that: The core wire (15) structure comprises a core wire (15) and an inner protective sleeve (16), and the core wire (15) is inserted into the inner protective sleeve (16).

7. A highly waterproof and salt-fog proof photovoltaic cable for a floating photovoltaic power station according to claim 6, characterized in that: A supporting structure is installed between any two adjacent core wire (15) structures.

8. The highly waterproof and salt-fog proof photovoltaic cable for a water photovoltaic power station according to claim 7, characterized in that: The support structure comprises a long support strip (12), wherein an installation chamber is provided in the support strip (12) along its extension direction, wherein a plurality of air bags (13) are provided in the installation chamber along the extension direction of the support strip (12), and a support sheet (14) is installed between any two adjacent air bags (13).

9. The highly waterproof and salt-fog proof photovoltaic cable for a floating photovoltaic power station according to claim 4, characterized in that: An outer protective sleeve (18) is provided on the outer side wall of the barrier sleeve (3), and a mesh-shaped covering structure is installed between the barrier sleeve (3) and the outer protective sleeve (18).

10. The highly waterproof and salt-fog proof photovoltaic cable for a floating photovoltaic power station according to claim 6, characterized in that: An armor layer is provided on the inner side wall of the inner protective sleeve (16).

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