Rapid On-Site Nitrogen Pressurization for High-Pressure Accumulators
Standard commercial nitrogen cylinders typically arrive with 12 to 15 MPa of gas pressure. As gas is transferred into an accumulator, cylinder pressure rapidly equalizes and drops, leaving up to 50% of the purchased nitrogen trapped unusable inside the commercial supply cylinder. The SCHWERLL Mobile Nitrogen Gas Booster Cart solves this costly inefficiency by utilizing a high-efficiency pneumatic gas booster pump to scavenge remaining gas from supply cylinders and boost it up to 40 MPa (400 bar / 5,800 PSI), saving thousands of dollars in gas consumption while eliminating the need for expensive third-party refilling services.
Key Operational Advantages
- Pneumatically Driven & Explosion-Proof: Driven entirely by standard industrial compressed shop air (0.4–0.8 MPa / 60–116 PSI). Contains zero electrical motors or switchgear, making it intrinsically safe for ATEX / Class 1 Div 2 hazardous zones, refineries, offshore rigs, and paint shops.
- Piston Accumulator Buffer: Equipped with an internal SCHWERLL high-pressure piston accumulator that smooths out pressure pulsations, delivers continuous laminar gas flow, and cuts total charging time by up to 60%.
- Automatic Auto-Stop Pressure Control: Pilot-operated pressure switch automatically shuts down the booster pump once the preset accumulator target pressure is reached, preventing over-pressurization.
- Heavy-Duty All-Terrain Skid Chassis: Constructed from powder-coated tubular steel with heavy-duty solid rubber wheels, lifting crane eyes, and integrated hose storage racks for harsh mining and construction environments.
Technical Specifications
| Parameter | Specification / Metric Value | Imperial Equivalent |
|---|---|---|
| Model Code | N2-BC-40-M (Mobile Series) | Heavy-Duty Mobile Cart |
| Drive Air Pressure Requirement | 0.4 – 0.8 MPa (Clean Shop Air) | 58 – 116 PSI |
| Drive Air Consumption | 0.8 – 1.6 Nm³/min | 28 – 56 SCFM |
| Nitrogen Inlet Pressure Range | 1.5 – 15.0 MPa | 217 – 2,175 PSI |
| Maximum Output Gas Pressure | 40.0 MPa (400 bar) | 5,800 PSI |
| Pressure Ratio | 40:1 High-Pressure Intensifier | 40:1 Boost Ratio |
| Gas Displacement Rate | 180 – 350 NL/min (Depending on Inlet) | 6.4 – 12.4 SCFM |
| Integrated Accumulator Volume | 10 Liters (Forged Alloy Steel) | 2.6 Gallons |
| Filtration Rating | 5 Micron Sintered Stainless Gas Filter | 5 Micron Particulate |
| Hose Assemblies Included | 6m Drive Air + 6m High-Pressure N2 Hose | 20 ft Heavy-Duty Hose Set |
| Overall Dimensions & Dry Weight | 850 × 680 × 1150 mm / 82 kg | 33.5″ × 26.8″ × 45.3″ / 180 lbs |
