Solusyon sa Single-Core Shielded Thin-Wall High-Voltage Cable
- Abstract
Ang solusyon na ito ay tumutugon sa mga karaniwang hamon ng industriya tulad ng pisikal na pinsala, kemikal na korosyon, at elektromagnetikong interferensiya na hinaharap ng mataas na tensyon na mga kable sa mga komplikadong kapaligiran. Ang pundamental na bahagi ng solusyon ay isang bagong disenyo ng single-core shielded thin-wall high-voltage cable. Sa pamamagitan ng inobatibong double-layer XLPE proteksyon, composite shielding structure, at opsyonal na optimized outer sheath design, ito ay nagbibigay ng katangi-tanging mekanikal na proteksyon, insulasyon performance, shielding effectiveness, at pahabang serbisyo, nagbibigay ng ligtas, maasahan, at epektibong koneksyon para sa power transmission systems.
II. Teknikal na Background at Layunin ng Utility Model
- Teknikal na Background
Ang mga wire at kable, bilang core fundamental products para sa pagpapadala ng enerhiya, paghahatid ng impormasyon, at pag-enable ng electromagnetic energy conversion, ay kadalasang tinatawag na ang "blood vessels" at "nerves" ng ekonomiya ng bansa. Ang kanilang reliabilidad ay direktang kritikal sa stable operation ng buong sistema. Gayunpaman, ang mga umiiral na high-voltage cables ay kadalasang naghaharap sa matinding mga hamon:
• Biological at Environmental Erosion: Susceptible sa pinsala mula sa mga daga, insekto, o panlabas na moisture, asido, alkali, at iba pang kemikal, na maaaring magresulta sa insulasyon failure, short circuits, o kahit na fire hazards.
• Mechanical Damage: Sa kondisyon tulad ng installation pulling, hangin, at sun exposure, ang panlabas na insulasyon layer ay madaling mawalan ng lakas at sumira, na nagpapakita ng core at nagpapahina ng power transmission habang nagbibigay din ng mga safety risks.
• Inadequate Shielding: Suboptimal electromagnetic shielding ay nagpapahina sa mga kable sa panlabas na interference o radiation, na nakakaapekto sa kalidad ng signal at stability ng transmission. - Layunin ng Utility Model
Ang solusyong ito ay may layuning magbigay ng single-core shielded thin-wall high-voltage cable na may mapagkukunan at rasyonal na disenyo ng estruktura, katangi-tanging protective performance, mahabang serbisyo, at superior shielding capabilities, na lubusang sumasagot sa nabanggit na umiiral na mga problema at nagpapatupad ng mahigpit na mga requirement para sa iba't ibang komplikadong application scenarios.
III. Core Cable Structure at Teknikal na Parameters
Ang kable ay gumagamit ng precision multi-layer structure mula sa loob hanggang sa labas, na bawat layer ay may tiyak na mga tungkulin upang synergetically i-enhance ang 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)
Para tugunan ang extreme o espesyal na kapaligiran, ang mga sumusunod na optimized structures ay maaaring idagdag sa labas ng 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. Teknikal na Advantages at 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.
