China Suppliers: High-Voltage Power Equipment Shielding Cylinder Factory for Vacuum Interrupters
Product Description
As the "arc barrier" at the heart of vacuum interrupters, our shield cylinders are engineered with a sophisticated composite structure, combining high-purity oxygen-free copper and special-grade stainless steel.
High-purity oxygen-free copper brings exceptional electrical conductivity and heat absorption capabilities, while special stainless steel contributes superior resistance to arc erosion and mechanical durability, ensuring the shield cylinder can withstand the extreme conditions of high-voltage operations.
We employ advanced manufacturing processes: precision drawing first shapes the metal into the desired cylindrical form, ensuring structural integrity and uniform wall thickness, while subsequent CNC milling refines the inner surface to a mirror-like finish with a roughness of Ra0.4 or lower.
This meticulous surface treatment plays a pivotal role in the component's overall performance:
- Arc Energy Absorption: The ultra-smooth inner wall efficiently absorbs arc energy, preventing excessive heat buildup that could degrade surrounding components.
- Electric Field Uniformity: It helps to uniformize the distribution of the electric field within the vacuum interrupter, reducing the risk of localized field intensification that might lead to insulation breakdown.
- Metal Vapor Adhesion Control: Minimizes the adhesion of metal vapors generated during arc interruption, which in turn preserves the interrupter's insulation performance over time.
- Extended Service Life: These combined features enhance the vacuum interrupter's ability to safely and reliably interrupt current while extending its overall service life.
In response to the equipment requirements of different voltage levels, we can customize an integrated structure from the cylinder body to the flange. Leveraging our homologous manufacturing experience with core components such as bellows, we ensure perfect adaptation to overall equipment operating conditions.
| Parameter | Specification / Capability |
|---|---|
| Voltage Range Support | 12kV - 550kV |
| Vacuum Tightness | Leakage rate ≤ 1×10⁻⁹ Pa・m³/s (during 100,000 switching cycles) |
| Assembly Tolerance | Strictly controlled within ±0.02mm (between shield cylinder, contacts, and insulating pull rods) |
| Quality Control | Full-process: from raw material spectral inspection to finished product helium mass spectrometry leak detection |