A tensile and bend-resistant photovoltaic cable

Abstract

The utility model relates to photovoltaic cable technical field especially is a kind of tensile bending-resistant photovoltaic cable, including insulating protective layer, the outer circle surface of insulating protective layer is bonded with first outer sheath, the outer circle surface of first outer sheath is bonded with steel wire braided cover, the outside fixed connection of steel wire braided cover has outer protruding support piece, the outer circle surface of outer protruding support piece is bonded with second outer sheath, the outside of second outer sheath is equipped with outer protruding wear rib, in the utility model, through the outer protruding wear rib, first outer sheath, steel wire braided cover and second outer sheath being set, it will be convenient that this tensile bending-resistant photovoltaic cable can be laid in situ before use, triple outer protective structure can be added to the inside of insulating protective layer in production stage, so that triple outer protective structure can be used with the cooperation of multiple outer protruding outer protruding wear rib, to reduce and isolate the wear and tear received during the photovoltaic cable laying dragging, prolong the service life of the photovoltaic cable.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic cable technology, specifically to a tensile and bending resistant photovoltaic cable. Background Technology

[0002] Photovoltaic cables are special cables used in photovoltaic power generation systems. They are mainly used to connect solar panels, inverters, distribution boxes and other equipment to realize the transmission and distribution of electrical energy. Some special cables, such as tensile and bending resistant photovoltaic cables, can use tinned copper wire or aluminum alloy conductors as the core, combined with irradiated cross-linked polyolefin insulation and sheath, to ensure that they can maintain stable performance under frequent bending and stretching scenarios.

[0003] Currently, existing tensile and bending resistant photovoltaic cables can be used with a composite structure of insulation and sheath to enable the cable to withstand bending. However, in some cases, photovoltaic cables need to be laid on the ground. Once the photovoltaic cable is dragged and rubbed against the ground for a long distance, the sheath layer is easily worn and thinned, reducing the overall service life of the cable. Therefore, a tensile and bending resistant photovoltaic cable is proposed to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a tensile and bending resistant photovoltaic cable to solve the problem mentioned in the background art that the sheath layer of the existing tensile and bending resistant photovoltaic cable is easily worn and thinned during installation and use.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A tensile and bending resistant photovoltaic cable includes an insulating protective layer, a first outer sheath bonded to the outer surface of the insulating protective layer, a steel wire braided sleeve bonded to the outer surface of the first outer sheath, an externally protruding support member fixedly connected to the outside of the steel wire braided sleeve, a second outer sheath bonded to the outer surface of the externally protruding support member, an externally protruding wear-resistant rib provided on the outside of the second outer sheath, and an insulating mixture filling the inside of the externally protruding support member.

[0007] Preferably, a shielding layer is bonded to the inner ring surface of the insulating protective layer, and a tin-plated copper conductor is provided on the inner side of the shielding layer. The outer surface of the tin-plated copper conductor and the inner surface of the shielding layer are tightly fitted together.

[0008] Preferably, the thickness of the insulating protective layer is greater than the thickness of the shielding layer, and the center point of the insulating protective layer coincides with the center point of the tin-plated copper conductor.

[0009] Preferably, the thickness of the steel wire braided sleeve is less than the thickness of the first outer sheath and the second outer sheath, the second outer sheath and the protruding wear-resistant rib are integrally formed, the number of protruding wear-resistant ribs corresponds one-to-one with the number of protruding support members, and the outer surface of the protruding support member and the inner surface of the protruding wear-resistant rib are tightly fitted together.

[0010] Preferably, the insulating mixture and the steel wire braided sleeve are bonded together.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, the protruding wear-resistant ribs, the first outer sheath, the steel wire braided sleeve, and the second outer sheath facilitate the addition of a triple outer protection structure, consisting of the first outer sheath, the steel wire braided sleeve, and the second outer sheath, to the insulation layer during the production stage before the tensile and bending resistant photovoltaic cable is laid and used on-site. This allows the triple outer protection structure to work in conjunction with the multiple protruding wear-resistant ribs to reduce and isolate the wear and tear on the photovoltaic cable during installation and dragging, preventing the photovoltaic cable from becoming thinner due to long-term wear and extending its service life. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the overall internal structure of this utility model.

[0015] In the diagram: 1. Insulating protective layer; 2. First outer sheath; 3. Steel wire braided sheath; 4. Outer protruding support; 5. Outer protruding wear-resistant rib; 6. Insulating mixture; 7. Shielding layer; 8. Tin-plated copper conductor core; 9. Second outer sheath. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-2 This utility model provides a technical solution:

[0018] A tensile and bending resistant photovoltaic cable includes an insulating protective layer 1, a first outer sheath 2 bonded to the outer ring surface of the insulating protective layer 1, a steel wire braided sleeve 3 bonded to the outer ring surface of the first outer sheath 2, an outer protruding support member 4 fixedly connected to the outside of the steel wire braided sleeve 3, a second outer sheath 9 bonded to the outer ring surface of the outer protruding support member 4, an outer protruding wear-resistant rib 5 provided on the outside of the second outer sheath 9, and an insulating mixture 6 filled inside the outer protruding support member 4.

[0019] A shielding layer 7 is bonded to the inner surface of the insulating protective layer 1. A tin-plated copper conductor 8 is located inside the shielding layer 7. The outer surface of the tin-plated copper conductor 8 is tightly fitted to the inner surface of the shielding layer 7. This design ensures the overall tensile strength of the photovoltaic cable when using the tin-plated copper conductor 8 as the conductor. The thickness of the insulating protective layer 1 is greater than that of the shielding layer 7, and the center point of the insulating protective layer 1 coincides with the center point of the tin-plated copper conductor 8. This structure facilitates the photovoltaic cable's shielding against electromagnetic interference and provides insulation protection during use. The thickness of the steel wire braided sheath 3 is smaller than... The thickness of the first outer sheath 2 and the second outer sheath 9 are integrally formed between the second outer sheath 9 and the protruding wear-resistant rib 5. The number of protruding wear-resistant ribs 5 corresponds one-to-one with the number of protruding support members 4. The outer surface of the protruding support member 4 and the inner surface of the protruding wear-resistant rib 5 are tightly fitted together. When the protruding wear-resistant rib 5 isolates the sheath assembly from direct friction with the ground, the protruding support member 4 can provide internal support and structural reinforcement for the protruding wear-resistant rib 5, preventing the protruding wear-resistant rib 5 from collapsing under pressure. The insulating mixture 6 and the steel wire braided sleeve 3 are bonded together. The insulating mixture 6 serves to fill and support the protruding support member 4.

[0020] Workflow: In the actual production of the photovoltaic cable of this utility model using a composite process, after the shielding layer 7 and the insulating protective layer 1 are wrapped around the tin-plated copper conductor core 8 from the inside out, the photovoltaic cable can achieve the functions of shielding electromagnetic interference and insulating protection through the added shielding layer 7 and insulating protective layer 1. Then, the first outer sheath 2, which is made of irradiated cross-linked halogen-free flame-retardant polyolefin (XLPO), is added to the outside of the insulating protective layer 1. After that, the steel wire braided sleeve 3 is added to the outside of the first outer sheath 2, and an appropriate amount of insulating mixture 6 is filled inside the outer protruding support 4. Finally, the TPU or TPE-E material is added. The second outer sheath 9 made of elastomeric material and multiple protruding wear-resistant ribs 5 are added to the outside of the steel wire braided sleeve 3. The protruding support 4 will fit tightly with the protruding wear-resistant ribs 5 and provide auxiliary internal support. At this time, the protrusion of multiple protruding wear-resistant ribs 5 can directly isolate the outer sheath assembly from direct wear by the ground during the laying of photovoltaic cables. The entire photovoltaic cable can minimize the drag wear caused by the photovoltaic cable through the triple outer protection structure composed of the first outer sheath 2, the steel wire braided sleeve 3 and the second outer sheath 9, thus extending the service life of the photovoltaic cable.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensile and bending resistant photovoltaic cable, comprising an insulating protective layer (1), characterized in that: The outer ring surface of the insulating protective layer (1) is bonded with a first outer sheath (2), the outer ring surface of the first outer sheath (2) is bonded with a wire braided sleeve (3), the outer side of the wire braided sleeve (3) is fixedly connected with an outer protruding support (4), the outer ring surface of the outer protruding support (4) is bonded with a second outer sheath (9), the outer side of the second outer sheath (9) is provided with an outer protruding wear-resistant rib (5), and the inner side of the outer protruding support (4) is filled with insulating mixture (6).

2. The tensile and bending resistant photovoltaic cable according to claim 1, characterized in that: The inner ring surface of the insulating protective layer (1) is bonded with a shielding layer (7), and the inner side of the shielding layer (7) is provided with a tin-plated copper conductor (8). The outer surface of the tin-plated copper conductor (8) and the inner surface of the shielding layer (7) are tightly fitted together.

3. The tensile and bending resistant photovoltaic cable according to claim 2, characterized in that: The thickness of the insulating protective layer (1) is greater than the thickness of the shielding layer (7), and the center point of the insulating protective layer (1) coincides with the center point of the tin-plated copper conductor (8).

4. The tensile and bending resistant photovoltaic cable according to claim 1, characterized in that: The thickness of the steel wire braided sleeve (3) is less than the thickness of the first outer sheath (2) and the second outer sheath (9). The second outer sheath (9) and the outer convex wear-resistant rib (5) are integrally formed. The number of the outer convex wear-resistant ribs (5) and the number of the outer convex support (4) are in one-to-one correspondence. The outer surface of the outer convex support (4) and the inner surface of the outer convex wear-resistant rib (5) are tightly fitted together.

5. The tensile and bending resistant photovoltaic cable according to claim 1, characterized in that: The insulating mixture (6) and the wire braided sleeve (3) are bonded together.

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