SF6 Gas Recovery and Purification System
The ZWLH-7Y is a comprehensive SF6 gas handling unit designed for the reliable recovery, purification, vacuuming, and storage of SF6 gas in high-voltage switchgear.
It features a 50 kg liquid storage capacity and advanced freezing liquefaction technology for efficient GIS maintenance.
Product Overview
The ZWLH-7Y SF6 Gas Recovery System is an essential maintenance solution tailored for SF6 insulated electrical equipment manufacturing and substation servicing. By utilizing a robust refrigeration compressor and advanced regenerative filtration, it effectively extracts SF6 gas, removes toxic arcing byproducts and moisture, and stores it safely. This prevents environmental emissions while significantly reducing the operational costs associated with purchasing new SF6 gas.
Functions and Value:
1. Comprehensive Gas Handling: Integrates vacuum pumping, gas recovery, high-efficiency purification, liquid storage, and cylinder filling into a single mobile unit, perfectly optimizing the workflow for electrical maintenance.
2. Advanced Liquefaction Technology: Utilizes an R22 refrigeration system to rapidly cool and condense high-pressure SF6 gas into liquid form, enabling compact and safe internal storage of up to 50 kg.
3. High-Efficiency Purification: Employs multi-stage oil separators and a regenerative molecular sieve drying system to reduce gas moisture to below 8 PPM and oil content to below 10 PPM.
4. Reliable Safety Mechanisms: Features automatic high-pressure shut-off controllers, overpressure safety relief valves, and phase sequence protection to ensure operator safety and extend compressor lifespan.
5. Mobile and Intuitive Design: Mounted on heavy-duty casters for effortless indoor and outdoor mobility, with a centralized electronic control box and clear pressure monitoring gauges for straightforward operation.
Technical Details
| Parameter | Specification |
|---|---|
| Model | ZWLH-7Y |
| Storage Capacity | 50 kg (Volume: 0.051 m³) |
| Final Recovery Pressure | ≤ 2 KPa |
| Ultimate Vacuum Limit | ≤ 10 Pa |
| Purification Moisture | < 8 PPM (weight) |
| Purification Oil Content | < 10 PPM (weight) |
| Annual Leakage Rate | ≤ 1% |
| Operating Temperature | -10°C to +40°C |
| Power Supply | 3-Phase AC 380 V ±10%, 50 Hz |
| Power Consumption | ≤ 7 kW |
| ≤ 7 kW | Approx. 400 kg |
| Dimensions | 1450 × 810 × 1200 mm |
Model Selection Guide
| Item NO. | Max Current | Measuring Range | Main Features | Recommended Application |
|---|---|---|---|---|
| GDZR-10A | 10A | 100μΩ - 20KΩ | Portable, built-in discharge alarm | Small to medium distribution transformers |
| GDZR-20A | 20A | 10μΩ - 10KΩ | High-speed testing, heat dissipation | Medium-sized power transformers |
| GDZR-40A | 40A | 1μΩ - 2KΩ | Dual-channel measurement, high current | Large-scale power transformers |
| GDZR-40A | Three-Phase 10A | 100μΩ - 10KΩ | Three-phase simultaneous measurement | Yn-type transformers, time-saving |
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Parts List
| Item NO. | Max Current | Measuring Range | Main Features | Recommended Application |
|---|---|---|---|---|
| GDZR-10A | 10A | 100μΩ - 20KΩ | Portable, built-in discharge alarm | Small to medium distribution transformers |
| GDZR-20A | 20A | 10μΩ - 10KΩ | High-speed testing, heat dissipation | Medium-sized power transformers |
| GDZR-40A | 40A | 1μΩ - 2KΩ | Dual-channel measurement, high current | Large-scale power transformers |
| GDZR-40A | Three-Phase 10A | 100μΩ - 10KΩ | Three-phase simultaneous measurement | Yn-type transformers, time-saving |
Product Video
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Certificate
Frequently Asked Questions
Contact our engineers for technical support and application guidance.
The system features a built-in storage container capable of safely holding up to 50 kg of liquefied SF6 gas, with a physical volume of 0.051 m³.
The unit can process SF6 gas with initial moisture levels up to 1000 PPM, accurately purifying it to achieve less than 8 PPM of moisture and less than 10 PPM of oil content by weight.
No, it is equipped with an automated high-pressure controller and safety relief valves that will automatically pause the compressor if discharge limits are exceeded, ensuring maximum operational safety.
Yes, the internal drying filter incorporates a heating device that allows for vacuum regeneration of the molecular sieve, enabling it to be effectively rejuvenated and used repeatedly over time.
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