Solusyon ng 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 interference na hinaharap ng high-voltage cables sa komplikadong kapaligiran. Ang puso ng solusyon ay isang bagong single-core shielded thin-wall high-voltage cable. Sa pamamagitan ng inobatibong double-layer XLPE protection, composite shielding structure, at opsyonal na optimized outer sheath design, ito ay nagbibigay ng walang tatalunang mechanical protection, insulation performance, shielding effectiveness, at extended service life, nagbibigay ng ligtas, maasahan, at mabisa na koneksyon para sa power transmission systems.
II. Teknikal na Background at Layunin ng Utility Model
- Teknikal na Background
Ang mga wire at cables, bilang core fundamental products para sa pagpapadala ng power, paghahatid ng impormasyon, at pag-enable ng electromagnetic energy conversion, kadalasang tinatawag na ang "blood vessels" at "nerves" ng national economy. Ang kanilang reliabilidad ay direktang kritikal sa matatag na operasyon ng buong sistema. Gayunpaman, ang mga umiiral na high-voltage cables kadalasang nakakaranas ng mahihirap na hamon:
• Biological at Environmental Erosion: Nakakaranas ng pinsala mula sa mga daga, insekto, o panlabas na moisture, acids, alkalis, at iba pang kemikal, na maaaring magresulta sa insulation failure, short circuits, o kahit na fire hazards.
• Mechanical Damage: Sa kondisyon tulad ng installation pulling, hangin, at sun exposure, ang outer insulation layer ay madaling mawalan ng lakas at sumira, na nagpapahiwatig ng core at nagsisimula ng safety risks.
• Inadequate Shielding: Ang hindi sapat na electromagnetic shielding ay nagpapahina sa mga cables sa external interference o radiation, na nakakaapekto sa kalidad ng signal at stability ng transmission. - Layunin ng Utility Model
Ang solusyon na ito ay may layuning magbigay ng single-core shielded thin-wall high-voltage cable na may ingeniously rational structural design, excellent protective performance, long service life, at superior shielding capabilities, na lubos na tugon sa nabanggit na umiiral na problema at pagtugon sa mahigpit na mga requirement para sa iba't ibang komplikadong application scenarios.
III. Core Cable Structure at Teknikal na Parameters
Ang cable ay gumagamit ng precision multi-layer structure mula sa loob patungo sa labas, kung saan ang bawat layer ay may tiyak na tungkulin upang synergetically enhance ang overall performance.
(I) Basic Structure (Layers mula sa Loob patungo sa Labas)
|
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 ng dual protection. Nagbibigay ng excellent primary insulation, heat resistance, mechanical strength, at resistance sa acids, alkalis, at oils. Nag-aasikaso ng core safety kahit ang outer sheath ay accidentally damaged. |
|
Binding Tape Layer |
High-performance flame-retardant tape |
0.3~0.4mm (0.3mm) |
Nagse-secure at nagtitighten ng internal structure upang iwasan ang loosening; nagpapataas ng overall flame retardancy, na nagbabawas ng fire risk. |
|
Tinned Copper Braid Layer |
Braided tinned copper wires |
0.2~0.3mm (0.2mm) |
Nagpapabuti ng roundness ng cable, nagpapataas ng radial compression resistance, at nagbibigay ng basic electromagnetic shielding. |
|
Aluminum Foil Layer |
Aluminum foil (with adhesive backing) |
0.1~0.2mm (0.2mm) |
Key layer para sa composite shielding. Nagtutulungan simbahan ng tinned copper braid upang significantly enhance ang shielding effectiveness. Ang adhesive layer (facing the XLPE outer sheath) nagaseguro ng tight, gap-free adhesion. |
|
XLPE Outer Sheath Layer |
Cross-linked polyethylene (XLPE) |
13.9~14.5mm (14.2mm) |
Outer layer ng dual protection. Nagsisilbing unang line of defense laban sa external environments, na nagfo-form ng safety redundancy kasama ang inner sheath. Ang outer surface nagbibigay ng foundation para sa optimized structures. |
(II) Optional Optimized Structures (Configurable Based on Application Scenarios)
Upang tugunan ang extreme o special environments, 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.
