Oil cleaning system HZLY-75A

Product overview
Huazheng HZLY series Vacuum Transformer Oil Dehydration and Purification Plant is an industrial unit for removing free and dissolved water, dissolved gases and solid contaminants from insulating oils to restore dielectric strength and insulation properties for high-voltage applications.
Key functions and applications

• Removal of free and dissolved water, gases and mechanical impurities from transformer and insulating oils.
• Restores dielectric strength and improves insulation performance for transformer oil, capacitor oil and refrigeration oil.
• Suitable for oil treatment in high and extra-high voltage equipment (examples: up to 500 kV and 220 kV transformers) and for preventive maintenance or oil recovery operations.

Technical features

• Horizontal double vacuum separation (Huazheng technology) to double evaporation area and improve gas removal efficiency.
• Coalescing oil-spray separator for reliable gas and emulsion separation.
• Fine filtration element (imported) with nominal fineness 5 μm and high separation efficiency (β ≥ 1000).
• Thermal radiation heating with constant temperature control (American heating technique as specified).
• Low-noise, long-life oil transport system and robust mechanical components.
• Automatic level control using float valve and photoelectric sensors.
• French anti-foaming technique to reduce risk of oil leakage and improve stability.
• Digital automatic control via PLC; major electrical apparatus listed as imported for control reliability.

Design, operation and maintenance

• Compact layout for easy integration into transformer substations and reduced footprint.
• User-oriented design for simplified operation, PLC interface for automated sequences and safety interlocks.
• Accessible components and standardized filters to facilitate routine maintenance and minimize downtime.

Characteristics / technical specifications

• Series: HZLY series (double-stage, high-efficiency vacuum oil purifier).
• Main functions: dehydration (free & dissolved water removal), degassing, solid particle removal.
• Filtration: fine filter element, 5 μm, β ≥ 1000.
• Separation: horizontal double vacuum separation with coalescing oil-spray separator.
• Heating: thermal radiation with constant temperature control.
• Controls: PLC-based digital automatic control; float valve and photoelectric oil level control.
• Anti-foaming: implemented French de-foaming technique.
• Applications: transformer oil purification, capacitor oil, refrigeration oil; applicable up to high-voltage transformer systems (examples: 220 kV / 500 kV).