15KW High Pressure Booster Air Compressor

There are two main types: air-cooled and water-cooled.

• Water-cooled systems: More common and highly efficient; suitable for most industrial applications, but require a stable on-site cooling water supply.
• Air-cooled systems: Suitable for situations where cooling water is unavailable or system simplification is desired. Modern "plug-and-play" high-pressure air-cooled solutions are also available, offering easier installation.
• Special designs: Some ultra-high-pressure units utilize the cooling effect generated by the expansion of the driving gas to achieve self-cooling, thereby enhancing energy efficiency and environmental friendliness.

Selection requires a comprehensive assessment of the following factors:

• Pressure and flow requirements: Determine the final pressure and gas consumption required by the process. Generally, thicker-walled or larger bottles require higher pressures.
• Compression medium: Select a model with materials and processing techniques compatible with the specific gas (e.g., compressed air, nitrogen, or oxygen).
• Site conditions: Consider factors such as ambient temperature, altitude, and the cooling water source (air-cooled vs. water-cooled).
• System layout: To save on the high cost of high-pressure piping, consider low-noise, low-vibration booster compressors that can be installed near the point of use (distributed or hybrid layout).
• Energy efficiency and cost: Focus on the "Total Cost of Ownership" rather than just the initial purchase price. Energy consumption and maintenance costs usually constitute the bulk of long-term expenses. Equipment featuring variable speed drives or multi-stage compression is often more energy-efficient.

Pre-start checks are crucial for equipment safety and longevity; the following items are essential:

• Manual rotation check: Manually rotate the mechanism 2–3 times to ensure moving parts are free of binding or abnormal noises.
• Lubrication system: Check that the oil level is above the midpoint of the oil gauge and that the oil color and viscosity are normal. For initial startups or restarts after long periods of inactivity, the oil pump must be started first for pre-lubrication (start the main unit only after oil pressure stabilizes).
• Cooling system: For water-cooled models, check the cooling water inlet pressure and flow rate to ensure the water circuit is unobstructed and valves are fully open; for air-cooled models, check that the radiator surface is clean.
• Air Intake System: Ensure the intake valve is fully open and check that the filter pressure drop indicator is within the normal range.
• Piping and Valves: Confirm the discharge piping is unobstructed, the discharge valve is open, and there are no signs of leakage at any connections.
• Electrical and Instrumentation: Check the power supply voltage; ensure there are no alarms on the control panel, all instruments show normal readings, and safety protection devices are active.
• Drain Valves: Confirm that the drain valves on all stages of gas-liquid separators are closed (or closed after condensate has been fully drained).
• Principle: Spending five extra minutes on checks before startup is better than spending five hours on repairs after a breakdown.

The equipment has entered the window for a major overhaul when the following signs appear:

• Discharge capacity steadily declines and cannot be restored by replacing valves; after ruling out external factors, this usually indicates severe wear on piston rings and cylinder liners.
• Lube oil consumption increases abnormally and significant oil carryover occurs in the discharge piping, indicating piston ring seal failure or oil scraper ring wear.
• Vibration levels increase significantly, potentially indicating excessive clearance in main bearings, connecting rod bearings, or crosshead guides.
• Compression ratio distribution becomes severely unbalanced, with inter-stage pressures deviating from design values and unable to be restored through valve adjustments.
• Frequent temperature or pressure alarms occur during operation, and underlying issues can no longer be resolved through routine maintenance.

Recommendation: Establish a preventive overhaul plan and schedule major overhauls based on the manufacturer's recommended operating hours (typically 8,000–12,000 hours) rather than waiting for the equipment to break down completely. During the overhaul, fully replace wear parts such as piston rings, rider rings, valves, sealing packing, and bearings, and inspect critical components-such as cylinder liners, piston rods, and crankshafts-for wear.