High performance photovoltaic cable

Abstract

The utility model is suitable for photovoltaic cable technical field provides a kind of high-performance photovoltaic cable, including insulating ring;The inner chamber of the insulating ring is fixedly installed with conductor in annular array distribution, the outside of the insulating ring is sleeved with crosslinked polyethylene inner sheath, the outside of the crosslinked polyethylene inner sheath is wound with aluminium plastic cladding band, the outside of the aluminium plastic cladding band is sleeved with galvanized copper wire braiding cover.This scheme provides by being outside the multilayer protection structure of cable, additional composite protection mechanism consisting of inner bush, rubber strip, outer bush and buffer groove, when cable is extruded, stepped or impacted by outside, rubber strip will occur elastic deformation, the space of buffer groove is compressed, to effectively absorb and disperse impact energy, it and high-carbon galvanized iron strip mutually cooperate and constitute double-layer tensile and torsional structure, effectively improve the mechanical durability and fatigue resistance of cable under repeated bending, winding and adverse geological conditions.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic cable technology, and in particular relates to a high-performance photovoltaic cable. Background Technology

[0002] Solar energy technology will become one of the green energy technologies of the future. Solar energy or photovoltaic (PV) is being used more and more widely in China. In addition to the rapid development of government-supported photovoltaic power plants, private investors are also actively building factories and planning to put into production solar energy or photovoltaic modules for global sales. High-performance aluminum alloy conductor photovoltaic cables are one of the components in the photovoltaic field.

[0003] Chinese patent discloses a high-performance aluminum alloy conductor photovoltaic cable, publication number CN202122610440.7. The paper proposes "a rubber protective sleeve, wherein an isolation layer is provided on the inner side of the rubber protective sleeve, three aluminum alloy conductors are provided on the inner side of the isolation layer, a filling component is provided between the inner side of the isolation layer and the surface of the three aluminum alloy conductors, and a protective layer is provided on the outer side of the rubber protective sleeve. This improves the safety of the cable during use and can protect the aluminum alloy conductors when the cable is damaged by external force. At the same time, it can effectively prevent the cable from burning, so that users can use the cable with peace of mind, thereby improving the practicality of the cable."

[0004] However, in the above-mentioned solutions, existing photovoltaic cables are prone to being stretched or even broken due to their own weight, strong winds, snow loads, and traction forces during installation. This makes the cables unusable in harsh environments such as large ground power stations, coastal typhoon areas, and mountainous and hilly areas. Therefore, it is necessary to design a high-performance photovoltaic cable. Utility Model Content

[0005] This invention provides a high-performance photovoltaic cable, aiming to solve the problem that cables cannot be used normally in harsh environments such as large ground power stations, coastal typhoon areas, and mountainous and hilly areas.

[0006] This utility model is implemented as follows: a high-performance photovoltaic cable includes an insulating ring; conductors arranged in a ring array are fixedly installed in the inner cavity of the insulating ring; a cross-linked polyethylene inner sheath is sleeved on the outer side of the insulating ring; an aluminum-plastic coating tape is wound around the outer side of the cross-linked polyethylene inner sheath; a galvanized copper wire braided sleeve is sleeved on the outer side of the aluminum-plastic coating tape; a non-woven fabric wrapping sleeve is sleeved on the outer side of the galvanized copper wire braided sleeve; and an aramid fiber protective sleeve is sleeved on the outer side of the non-woven fabric wrapping sleeve; a composite protective mechanism is fixedly sleeved on the outer side of the aramid fiber protective sleeve, the composite protective mechanism being used to improve the tensile strength of the cable; and multi-angle connecting mechanisms are assembled at both ends of the composite protective mechanism, the multi-angle connecting mechanisms being used to improve the installation efficiency of the cable.

[0007] Preferably, the composite protective mechanism includes: an inner sleeve fixedly fitted onto the outside of the aramid fiber protective sleeve. The bushing has rubber strips arranged in a ring array fixed to the outer side wall of the inner bushing, and an outer bushing is fixed to the outer side of each rubber strip. Buffer grooves are formed between the rubber strips.

[0008] Preferably, the multi-angle connection mechanism includes: a first connection fixedly installed at both ends of the outer bushing. The sealing block is slidably inserted into the inner side of the buffer groove. One end of the sealing block is fixedly connected to an end plate. The outer side of the end plate is fixedly connected to a second connecting end distributed in a ring array. The inner sides of the first connecting end and the second connecting end are both threadedly connected to locking screws.

[0009] Preferably, the inner liner and the outer liner are integrally injection molded, and the outer liner is slidably inserted into the outside of the aramid fiber protective sleeve through the inner liner.

[0010] Preferably, high-carbon galvanized iron wire strips arranged in a ring array are fixedly connected to the outer side wall of the outer bushing, and the two ends of the high-carbon galvanized iron wire strips are respectively fixedly connected to the first connecting ends on both sides.

[0011] Preferably, an extension connecting piece is rotatably connected to the outer side of the second connecting end, and a connecting extension groove is formed on the inner side of the extension connecting piece.

[0012] Preferably, a tensile metal strip is fixed to the inner side of the inner cavity of the insulating ring, and the tensile metal strip is installed at the center of the inner cavity of the insulating ring.

[0013] Compared with related technologies, the high-performance photovoltaic cable provided by this utility model has the following beneficial effects: By adding a composite protective mechanism consisting of an inner liner, rubber strip, outer liner, and buffer groove to the cable's multi-layer protective structure, when the cable is subjected to external compression, stepping, or impact, the rubber strip will undergo elastic deformation, and the space of the buffer groove will be compressed, thereby effectively absorbing and dispersing the impact energy. It works together with the high-carbon galvanized iron wire strip to form a double-layer tensile and torsional structure, which effectively improves the cable's mechanical durability and fatigue resistance under repeated bending, winding, and harsh geological conditions.

[0014] The rotatable and adjustable connection mechanism consists of a first connection end, a second connection end, a locking screw, and a rotatable extension connection piece. The extension connection piece allows installers to flexibly adapt to different angles of the mounting surface by rotating it, and then quickly fix it using the locking screw. The connection extension groove allows the cable to be adjusted at a small angle after it is fixed, effectively avoiding the torque caused by rigid fixing at the connection point, thus protecting the cable end structure and greatly improving the installation efficiency and connection reliability in complex photovoltaic arrays. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the overall structure of this utility model; Figure 3 This is a side view of the internal connection structure of the outer bushing of this utility model; Figure 4 This is a diagram showing the unfolded internal connection structure of the outer bushing of this utility model; Figure 5 This is a diagram showing the connection structure between the outer bushing and the end plate of this utility model.

[0016] In the diagram: 1. Insulating ring; 2. Conductor; 3. Cross-linked polyethylene inner sheath; 4. Aluminum-plastic coated tape; 5. Galvanized copper wire braided sleeve; 6. Non-woven fabric wrapping sleeve; 7. Aramid fiber protective sleeve; 8. Composite protective mechanism; 81. Inner liner; 82. Rubber strip; 83. Outer liner; 84. Buffer groove; 9. Multi-angle connection mechanism; 91. First connection end; 92. Sealing block; 93. End plate; 94. Second connection end; 95. Locking screw; 10. High-carbon galvanized iron wire strip; 11. Extension connecting piece; 12. Tensile metal strip. Detailed Implementation

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0018] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Example 1

[0019] A preferred embodiment of the high-performance photovoltaic cable provided by this utility model is as follows: Figures 1 to 5 As shown: A high-performance photovoltaic cable includes an insulating ring 1; conductors 2 arranged in a ring array are fixedly installed in the inner cavity of the insulating ring 1; a cross-linked polyethylene inner sheath 3 is sleeved on the outside of the insulating ring 1; an aluminum-plastic coating tape 4 is wound around the outside of the cross-linked polyethylene inner sheath 3; a galvanized copper wire braided sleeve 5 is sleeved on the outside of the aluminum-plastic coating tape 4; a non-woven fabric wrapping sleeve 6 is sleeved on the outside of the galvanized copper wire braided sleeve 5; and an aramid fiber protective sleeve 7 is sleeved on the outside of the non-woven fabric wrapping sleeve 6; a composite protection mechanism 8 is fixedly sleeved on the outside of the aramid fiber protective sleeve 7, the composite protection mechanism 8 is used to improve the tensile strength of the cable; and multi-angle connection mechanisms 9 are assembled at both ends of the composite protection mechanism 8, the multi-angle connection mechanisms 9 are used to improve the installation efficiency of the cable.

[0020] It should be noted that some existing high-performance photovoltaic cables still have certain shortcomings in actual use. According to the comparison documents, the cables cannot be used normally in harsh environments such as large ground power stations, coastal typhoon areas, and mountainous and hilly areas.

[0021] In this embodiment, during the use of the device, the conductor 2 is wrapped by a cross-linked polyethylene inner sheath 3 to create a uniform electric field, prevent internal corona discharge, and provide basic insulation protection. The outer aluminum-plastic sheath 4 prevents moisture from penetrating along the longitudinal and radial directions of the cable. The galvanized copper wire braided sleeve 5 serves as a channel for fault current, improving the cable's anti-interference capability. The non-woven fabric wrapping sleeve 6 protects the current shielding layer, i.e., the galvanized copper wire braided sleeve 5, preventing it from directly rubbing against the external structure. Finally, the aramid fiber protective sleeve 7 provides impact resistance to the internal cable structure, ensuring the cable's stability. The laying provides a buffer. Through the setting of the reset protection mechanism, the rubber strip 82 and the buffer groove 84 can serve as a buffer and shock absorption component for the cable. When the cable is stepped on, hit by gravel or squeezed, the interlayer can absorb and disperse the impact energy through deformation, avoiding damage to the internal core insulation layer and conductor 2. At the same time, the high carbon galvanized iron wire strip 10 set on the outside and the aramid fiber protective sleeve 7 inside form a double-layer tensile structure, making the cable less prone to permanent deformation or sheath cracking when repeatedly bent and wound, thus extending its service life near the adjustable photovoltaic bracket.

[0022] In a further preferred embodiment of the present invention, the inner liner 81 and the outer liner 83 are both integrally injection molded, and the outer liner 83 is slidably inserted into the outer side of the aramid fiber protective sleeve 7 through the inner liner 81.

[0023] In this embodiment, the inner bushing 81 and the outer bushing 83 provide outer wall protection for the cable, providing the cable with impact and pressure resistance when soil subsidence or rock compression occurs.

[0024] In a further preferred embodiment of the present invention, high-carbon galvanized iron wire strips 10 arranged in a ring array are fixedly connected to the outer side wall of the outer bushing 83, and the two ends of the high-carbon galvanized iron wire strips 10 are respectively fixedly connected to the first connecting ends 91 on both sides.

[0025] In this embodiment, a high-carbon galvanized iron wire strip 10 is used to assist the outer sheath 83 in providing an anti-twisting effect for the cable.

[0026] In a further preferred embodiment of the present invention, an extension connecting piece 11 is rotatably connected to the outer side of the second connecting end 94, and a connecting extension groove is provided on the inner side of the extension connecting piece 11.

[0027] In this embodiment, the rotatable extension connecting piece 11 on the outer side of the second connecting end 94 facilitates the installation of the cable by rotating the extension connecting piece 11 to fix one end of the cable to the irregular installation end with screws. At the same time, the setting of the extension groove allows the cable to be adjusted at a certain angle after fixing, preventing the cable from generating torque at the connection and protecting the cable end structure. Example 2

[0028] Based on Example 1, the present invention provides a preferred embodiment of a high-performance photovoltaic cable. For example Figures 1 to 5 As shown: The composite protective mechanism 8 includes: an inner liner 81 fixedly sleeved on the outside of the aramid fiber protective sleeve 7, rubber strips 82 arranged in a ring array fixedly connected to the outer wall of the inner liner 81, an outer liner 83 fixedly connected to the outer side of each rubber strip 82, and buffer grooves 84 provided between the rubber strips 82.

[0029] In this embodiment, the inner bushing 81 and the outer bushing 83 are connected by a rubber strip 82 to provide double protection for the cable body. At the same time, the buffer groove 84 and the rubber strip 82 can also prevent the cable from being permanently deformed or cracked when repeatedly bent and wound, thus extending the service life of the cable.

[0030] In a further preferred embodiment of this utility model, the multi-angle connection mechanism 9 includes: fixedly installed on the... The first connecting ends 91 at both ends of the outer bushing 83 are slidably inserted into the sealing blocks 92 inside the buffer groove 84. One end of the sealing block 92 is fixedly connected to an end plate 93. The outer side of the end plate 93 is fixedly connected to a second connecting end 94 arranged in a ring array. The inner sides of the first connecting end 91 and the second connecting end 94 are both threadedly connected to locking screws 95.

[0031] In this embodiment, the first connecting end 91 and the second connecting end 94 are fixed by a locking screw 95, which effectively ensures that the sealing plug 92 and the end plate 93 are tightly fitted after entering the buffer groove 84, so that the buffer groove 84 is in a sealed state, and the buffer groove 84 forms a structure similar to a buffer airbag, which provides buffer against the compression and collision of the cable. At the same time, the end plate 93 mainly provides a connection port for the subsequent connection of the cable.

[0032] In a further preferred embodiment of the present invention, a tensile metal strip 12 is fixedly connected to the inner side of the inner cavity of the insulating ring 1, and the tensile metal strip 12 is installed at the center of the inner cavity of the insulating ring 1.

[0033] In this embodiment, the tensile metal strip 12 is used to plasticize the entire cable, providing a basic force to resist curling and torsional deformation.

[0034] In summary, this effectively improves the mechanical durability and fatigue resistance of cables under repeated bending, winding, and harsh geological conditions, and effectively avoids the torsional force caused by rigid fixing at the connection, thereby protecting the cable end structure.

[0035] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0036] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units described above is only a logical functional division for a high-performance photovoltaic cable. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A high-performance photovoltaic cable, characterized in that, include: Insulating ring (1); The inner cavity of the insulating ring (1) is fixedly installed with conductors (2) arranged in a ring array. The outer side of the insulating ring (1) is fitted with a cross-linked polyethylene inner sheath (3). The outer side of the cross-linked polyethylene inner sheath (3) is wrapped with an aluminum-plastic coating tape (4). The outer side of the aluminum-plastic coating tape (4) is fitted with a galvanized copper wire braided sleeve (5). The outer side of the galvanized copper wire braided sleeve (5) is fitted with a non-woven fabric wrapping sleeve (6). The outer side of the non-woven fabric wrapping sleeve (6) is fitted with an aramid fiber protective sleeve (7). A composite protective mechanism (8) is fixedly sleeved on the outside of the aramid fiber protective sleeve (7), and the composite protective mechanism (8) is used to improve the tensile strength of the cable. The multi-angle connection mechanism (9) is assembled at both ends of the composite protection mechanism (8) to improve the installation efficiency of the cable.

2. The high-performance photovoltaic cable as described in claim 1, characterized in that, The composite protective mechanism (8) includes: An inner liner (81) is fixedly fitted onto the outside of the aramid fiber protective sleeve (7). Rubber strips (82) arranged in a ring array are fixed to the outer side wall of the rubber strip (82), and outer bushings (83) are fixed to the outer side of each rubber strip (82). Buffer grooves (84) are provided between the rubber strips (82).

3. A high-performance photovoltaic cable as described in claim 2, characterized in that, The multi-angle connection mechanism (9) includes: The first connecting ends (91) are fixedly installed at both ends of the outer bushing (83) and slidably inserted into the buffer groove. (84) The inner sealing block (92) has an end plate (93) fixedly connected to one end of the sealing block (92), and a second connecting end (94) arranged in a ring array fixedly connected to the outer side of the end plate (93). The inner sides of the first connecting end (91) and the second connecting end (94) are both threadedly connected with locking screws (95).

4. A high-performance photovoltaic cable as described in claim 2, characterized in that, The inner liner (81) and the outer liner (83) are both integrally injection molded, and the outer liner (83) is slidably inserted into the outside of the aramid fiber protective sleeve (7) through the inner liner (81).

5. A high-performance photovoltaic cable as described in claim 3, characterized in that, The outer sleeve (83) has high carbon galvanized iron wire strips (10) arranged in a ring array fixedly connected to the outer side wall, and the two ends of the high carbon galvanized iron wire strips (10) are respectively fixedly connected to the first connecting ends (91) on both sides.

6. A high-performance photovoltaic cable as described in claim 3, characterized in that, The outer side of the second connecting end (94) is rotatably connected with an extension connecting piece (11), and the inner side of the extension connecting piece (11) is provided with a connecting extension groove.

7. A high-performance photovoltaic cable as described in claim 1, characterized in that, A tensile metal strip (12) is fixed to the inner side of the inner cavity of the insulating ring (1), and the tensile metal strip (12) is installed at the center of the inner cavity of the insulating ring (1).

Images