Solusyon sa Single-Core Shielded Thin-Wall High-Voltage Cable
- Abstract
Ang solusyon kini nag-atiman sa mga karanihang pagsubok sa industriya sama sa pisikal nga pinsala, kimikal nga korosyon, ug elektromagnetiko nga interferensiya nga gipangahasonan ngadto sa mataas nga tension nga kable sa komplikado nga kalibutan. Ang sentral nga bahin sa solusyon mao ang bag-ong single-core shielded thin-wall high-voltage cable. Pinaagi sa inobatibo nga double-layer XLPE protection, composite shielding structure, ug opsyonal nga optimized outer sheath design, maoy ipahibalo og extraordinary nga mechanical protection, insulation performance, shielding effectiveness, ug extended service life, naghatag og safe, reliable, ug efficient connectivity alang sa power transmission systems.
II. Teknikal nga Background ug Utility Model Purpose
- Teknikal nga Background
Ang mga wire ug kable, isip core fundamental nga produkto para sa transmision sa power, pagpakay sa impormasyon, ug pag-enable sa electromagnetic energy conversion, kasagaran gitawag isip ang "blood vessels" ug "nerves" sa national economy. Ang ilang reliability direktang critical sa stable nga operasyon sa tanang sistema. Gayondili, ang eksistente nga high-voltage cables kasagaran naa sa severe nga pagsubok:
• Biological ug Environmental Erosion: Susceptible sa pinsala gikan sa rodents, insects, o external moisture, acids, alkalis, ug uban pang chemicals, potensyal nga mogulid sa insulation failure, short circuits, o tungod pa sa fire hazards.
• Mechanical Damage: Sa kondisyon sama sa installation pulling, wind, ug sun exposure, ang outer insulation layer prone sa wear ug cracking, exposing the core ug compromising power transmission while posing safety risks.
• Inadequate Shielding: Suboptimal electromagnetic shielding nagbutang sa mga kable vulnerable sa external interference o radiation, affecting signal quality ug transmission stability. - Utility Model Purpose
Ang solusyon mao ang maghatag og single-core shielded thin-wall high-voltage cable nga may ingeniously rational structural design, excellent protective performance, long service life, ug superior shielding capabilities, thoroughly addressing the aforementioned existing problems and meeting stringent requirements for various complex application scenarios.
III. Core Cable Structure ug Technical Parameters
Ang kable nag-adop sa precision multi-layer structure gikan sa inside out, samtang ang bawg layer nagsilbi sa specific nga functions aron synergistically enhance overall performance.
(I) Basic Structure (Layers from Inside to Out)
|
Structural Layer |
Material / Composition |
Thickness Range (Preferred Value) |
Core Function |
|
Conductor Core |
Stranded high-purity oxygen-free copper wires |
- |
Conductive core, responsible for efficient power transmission. |
|
XLPE Inner Sheath Layer |
Cross-linked polyethylene (XLPE) |
9.9~10.3mm (10.1mm) |
Inner layer of dual protection. Provides excellent primary insulation, heat resistance, mechanical strength, and resistance to acids, alkalis, and oils. Ensures core safety even if the outer sheath is accidentally damaged. |
|
Binding Tape Layer |
High-performance flame-retardant tape |
0.3~0.4mm (0.3mm) |
Secures and tightens the internal structure to prevent loosening; enhances overall flame retardancy, reducing fire risk. |
|
Tinned Copper Braid Layer |
Braided tinned copper wires |
0.2~0.3mm (0.2mm) |
Improves cable roundness, enhances radial compression resistance, and provides basic electromagnetic shielding. |
|
Aluminum Foil Layer |
Aluminum foil (with adhesive backing) |
0.1~0.2mm (0.2mm) |
Key layer for composite shielding. Works synergistically with the tinned copper braid to significantly enhance shielding effectiveness. The adhesive layer (facing the XLPE outer sheath) ensures tight, gap-free adhesion. |
|
XLPE Outer Sheath Layer |
Cross-linked polyethylene (XLPE) |
13.9~14.5mm (14.2mm) |
Outer layer of dual protection. Serves as the first line of defense against external environments, forming a safety redundancy with the inner sheath. The outer surface provides a foundation for optimized structures. |
(II) Optional Optimized Structures (Configurable Based on Application Scenarios)
To address extreme or special environments, the following optimized structures can be added outside the XLPE outer sheath:
- Axial Ribs:
- Structure: Axially extending ribs are provided on the outer sheath surface, with an embedded grounding wire inside.
- Function: One end of the grounding wire connects to the internal tinned copper braid, and the other end is reliably grounded, forming an efficient discharge path that greatly enhances shielding and anti-interference capabilities. The rib structure also increases the cable's tensile strength and reduces direct wear on the outer sheath.
- Annular Protuberances:
- Structure: Annular protuberances are spaced on the outer sheath surface, with embedded ferrite magnetic rings inside.
- Function: The ferrite rings effectively suppress high-frequency electromagnetic interference, further optimizing the shielding spectrum. The annular protuberances also provide compression resistance and reduce wear.
- Polyester Fiber Braided Layer:
- Structure: A high-strength polyester fiber braided net is applied as the outermost layer.
- Function: Provides comprehensive environmental protection, effectively resisting UV radiation, high temperatures, humidity, low temperatures, acidic/alkaline gases, and other erosive factors. It also mitigates mechanical impact, ensuring long-term safe operation in harsh environments.
IV. Technical Advantages and Value
- Dual Protection, Safe and Reliable:
- The dual-layer XLPE insulation design forms a redundant safety system. Even if the outer sheath is severely damaged accidentally, the inner sheath remains intact, significantly reducing the risk of power outages and short circuits and ensuring power supply continuity.
- Stable Structure, High Flame Retardancy:
- The compact binding tape layer ensures the structural integrity and stability of the cable, preventing internal loosening. Its high flame-retardant properties significantly enhance the product's fire safety rating.
- Efficient Composite Shielding, Excellent Anti-Interference Capability:
- The composite shielding structure formed by the tinned copper braid and aluminum foil layer ("metal braid + full coverage") provides 360° flawless shielding, effectively isolating internal and external electromagnetic interference. The optional grounding wire and ferrite rings can address interference issues in specific frequency bands.
- Exceptional Durability, Wide Application Range:
- Through the design of ribs and protuberances on the outer sheath and the outermost polyester braided layer, the cable's resistance to wear, tearing, and weathering is qualitatively leapfrogged. Its service life is significantly extended, making it suitable for a wide range of complex and harsh environments such as industrial parks, field installation, tunnels, and underground mines, reducing overall maintenance costs.
