CN-224232377-U - Dampproofing photovoltaic cable structure

CN224232377UCN 224232377 UCN224232377 UCN 224232377UCN-224232377-U

Abstract

The utility model discloses a dampproof photovoltaic cable structure, which comprises a conductor, wherein an aluminum foil shielding layer is arranged on the outer wall of the conductor, an inner dampproof mechanism is arranged between the conductor and the aluminum foil shielding layer, a crosslinked polyethylene inner sheath is arranged on the outer wall of the aluminum foil shielding layer, an intermediate reinforcing structure is arranged between the aluminum foil shielding layer and the crosslinked polyethylene inner sheath, and an outer protective structure is arranged on the outer wall of the crosslinked polyethylene inner sheath. According to the utility model, the inner-layer moistureproof mechanism is arranged to isolate moisture from a conductor through the conductor insulating layer, the moisture absorption expansion belt expands in volume after meeting water, gaps are filled to block moisture diffusion, and the aluminum foil shielding layer forms a physical moistureproof barrier through metal adhesion. The nano waterproof coating of the enhanced dampproof mechanism forms a film outside the moisture absorption expansion band, water molecules are repelled by nano surface tension, and the water blocking yarns are spirally wound on the surface of the crosslinked polyethylene inner sheath and form a longitudinal water blocking band after being expanded by water, so that the water is prevented from penetrating along the axial direction of the cable.

Inventors

JI YUEBIN
WANG PEIYUAN
HAN BAO
Ji Tianchang

Assignees

安徽华网电缆有限公司

Dates

Publication Date: 20260512
Application Date: 20250611

Claims (5)

1. The utility model provides a dampproofing photovoltaic cable structure, includes conductor (1), its characterized in that, conductor (1) outer wall is provided with aluminium foil shielding layer (5), be provided with the dampproofing mechanism of inlayer between conductor (1) and aluminium foil shielding layer (5), aluminium foil shielding layer (5) outer wall is provided with crosslinked polyethylene inner sheath (9), be provided with middle additional strengthening between aluminium foil shielding layer (5) and crosslinked polyethylene inner sheath (9), crosslinked polyethylene inner sheath (9) outer wall is provided with outer protective structure, conductor (1) outer wall is provided with the dampproofing mechanism of reinforcing.
2. The dampproof photovoltaic cable structure according to claim 1, wherein the inner layer dampproof mechanism comprises a conductor insulating layer (2) and a hygroscopic expansion belt (4), the conductor insulating layer (2) is wrapped on the outer side of the conductor (1), the hygroscopic expansion belt (4) is wrapped on the outer side of the conductor insulating layer (2), and the aluminum foil shielding layer (5) is tightly attached to the hygroscopic expansion belt (4).
3. The dampproof photovoltaic cable structure according to claim 2, wherein the middle reinforcing structure comprises an aramid fiber woven layer (7) and a polyurethane buffer layer (8), the aramid fiber woven layer (7) is wound on the outer side of the aluminum foil shielding layer (5), and the polyurethane buffer layer (8) is coated on the surface of the aramid fiber woven layer (7).
4. The dampproof photovoltaic cable structure according to claim 3, wherein the outer protective structure comprises a corrugated aluminum sheath (14) and an anti-UV polyethylene outer sheath (13), the cross-linked polyethylene inner sheath (9) is wrapped on the outer side of the polyurethane buffer layer (8), a silicone rubber sealant (12) is coated at a joint of the corrugated aluminum sheath (14), the anti-UV polyethylene outer sheath (13) is wrapped on the outer side of the corrugated aluminum sheath (14), and an anti-ultraviolet auxiliary agent is added on the surface of the anti-ultraviolet photovoltaic cable structure.
5. The dampproofing photovoltaic cable structure of claim 4, wherein the dampproofing mechanism of reinforcing includes nanometer waterproof coating (6), humidity sensing strip (11), fire-retardant filling layer (3) and water blocking yarn (10), nanometer waterproof coating (6) are coated between moisture absorption expansion belt (4) and aluminium foil shielding layer (5), humidity sensing strip (11) inlay in ripple aluminium sheath (14) inner wall, fire-retardant filling layer (3) are filled in the clearance between conductor insulating layer (2) and moisture absorption expansion belt (4), water blocking yarn (10) spiral winding is in crosslinked polyethylene inner sheath (9) surface, UV resistant polyethylene oversheath (13) outer wall printing has warning sign layer (15).

Description

Dampproofing photovoltaic cable structure Technical Field The utility model relates to the technical field of cables, in particular to a dampproof photovoltaic cable structure. Background As a key component of a solar power generation system, a photovoltaic cable needs to be exposed outdoors for a long time, and risks of rainwater penetration, moisture invasion and the like are faced. The traditional photovoltaic cable generally adopts single insulating layer design, and the dampproof performance is limited, especially easily causes insulation ageing and short circuit trouble because of the humidification at epidermis damaged point, influences photovoltaic system's stability and life. Therefore, there is a need to design a multi-layer protection, high-efficiency moisture-proof photovoltaic cable structure. Disclosure of utility model The utility model aims to solve the defects in the prior art, and provides a dampproof photovoltaic cable structure. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The utility model provides a dampproofing photovoltaic cable structure, includes the conductor, the conductor outer wall is provided with the aluminium foil shielding layer, be provided with inlayer dampproofing mechanism between conductor and the aluminium foil shielding layer, the aluminium foil shielding layer outer wall is provided with crosslinked polyethylene inner sheath, be provided with middle additional strengthening between aluminium foil shielding layer and the crosslinked polyethylene inner sheath, crosslinked polyethylene inner sheath outer wall is provided with outer protective structure, the conductor outer wall is provided with the dampproofing mechanism of reinforcing. Preferably, the inner layer moisture-proof mechanism comprises a conductor insulating layer and a moisture-absorbing expansion belt, the conductor insulating layer is wrapped on the outer side of the conductor, the moisture-absorbing expansion belt is wrapped on the outer side of the conductor insulating layer, and the aluminum foil shielding layer is tightly attached to the moisture-absorbing expansion belt. Preferably, the middle reinforcing structure comprises an aramid fiber woven layer and a polyurethane buffer layer, wherein the aramid fiber woven layer is wound on the outer side of the aluminum foil shielding layer, and the polyurethane buffer layer is coated on the surface of the aramid fiber woven layer. Preferably, the outer protective structure comprises a corrugated aluminum sheath and an anti-UV polyethylene outer sheath, wherein the crosslinked polyethylene inner sheath is wrapped on the outer side of the polyurethane buffer layer, the joint of the corrugated aluminum sheath is coated with silicone rubber sealant, the anti-UV polyethylene outer sheath is wrapped on the outer side of the corrugated aluminum sheath, and an anti-ultraviolet auxiliary agent is added on the surface of the anti-UV polyethylene outer sheath. Preferably, the enhanced dampproof mechanism comprises a nano waterproof coating, a humidity sensing strip, a flame-retardant filling layer and water-blocking yarns, wherein the nano waterproof coating is coated between the moisture absorption expansion belt and the aluminum foil shielding layer, the humidity sensing strip is embedded in the inner wall of the corrugated aluminum sheath, the flame-retardant filling layer is filled in a gap between the conductor insulating layer and the moisture absorption expansion belt, the water-blocking yarns are spirally wound on the surface of the crosslinked polyethylene inner sheath, and the warning mark layer is printed on the outer wall of the UV-resistant polyethylene outer sheath. The beneficial effects of the utility model are as follows: Moisture and conductors are isolated through the conductor insulating layer by the inner-layer dampproof mechanism, the moisture absorption expansion belt expands in volume after meeting water, gaps are filled to block moisture diffusion, and the aluminum foil shielding layer forms a physical dampproof barrier through metal adhesion. The nano waterproof coating of the enhanced dampproof mechanism forms a film outside the moisture absorption expansion band, water molecules are repelled by nano surface tension, and the water blocking yarns are spirally wound on the surface of the crosslinked polyethylene inner sheath and form a longitudinal water blocking band after being expanded by water, so that the water is prevented from penetrating along the axial direction of the cable. The aramid fiber weaving layer with the middle reinforcing structure prevents the cable from being damaged in the outer layer due to external force pulling, and the polyurethane buffer layer absorbs kinetic energy such as stone impact through elastic deformation, so that the damage risk of the inner layer structure is reduced. In the outer layer protection structure, the corrugated aluminum sheath is s