Product Overview
An Oil-Injected High Pressure Screw Air Compressor is a rotary screw compressor engineered to deliver compressed air above conventional industrial pressure thresholds (typically exceeding 10 bar up to 30+ bar). The system utilizes optimized single-stage or multi-stage rotary screw airends to achieve stable, high-pressure output.
Oil injection serves a triple function during compression: internal lubrication, volumetric sealing, and immediate heat dissipation. Because the discharge air contains residual oil, downstream separation stages and air-treatment configurations must be integrated according to specific purity demands.
Technical Parameters Table
|
Parameter Category |
Technical Specification |
|
Model Series |
HPS-Series (High Pressure Single/Multi-Stage Screw Compressor) |
|
Working Pressure |
1.0 MPa – 3.0 MPa (10 bar to 30 bar gauge) |
|
Volume Flow Rate (Capacity) |
2.0 m³/min to 40.0 m³/min (Customizable for heavy industrial demands) |
|
Drive Type |
Direct-Driven via Flexible Coupling / Gear-Driven Transmission |
|
Cooling Method |
Air-Cooled / Water-Cooled (Equipped with oversized industrial heat exchangers) |
|
Motor Specifications |
IE3 / IE4 High-Efficiency Motor, IP55 Enclosure, Insulation Class F |
|
Lubrication System |
Synthetic High-Pressure Compressor Oil with Integrated Thermostatic Valve |
|
Oil Carryover Rate |
< 3 ppm |
|
Control System |
Programmable Logic Controller (PLC) with Multi-Language Touchscreen Display |
|
Ambient Temperature |
-5°C to +45°C (Optional tropicalized variant available up to 50°C) |
|
Starting Method |
Star-Delta / Soft Starter / Variable Frequency Drive (VFD optional) |
|
Noise Level |
78 – 85 dB(A) depending on model capacity |
Key Performance Advantages
Reinforced Airend Design: Precision-machined rotor profiles engineered with tighter tolerances to handle heavy radial loads and elevated pressure differentials.
Advanced Oil Separation System: Multi-stage centrifugal separation and high-efficiency coalescing filters ensuring oil carryover is kept to minimal parts per million (ppm).
Intelligent Load Management: Automated modulation matching air supply strictly to operational demand, reducing energy consumption during partial-load cycles.
Robust Thermal Control: Integrated thermostatic control valves governing oil temperature to prevent moisture condensation within the lubricant sump.
Typical Applications
PET Bottle Blowing
High-pressure air injection for packaging manufacturing lines requiring stable cycle consistency.
Industrial Pressure Testing
Controlled pressure supply for hydrostatic or pneumatic testing of pressure vessels and piping.
High-Pressure Pneumatic Machinery
Specialized industrial automation and heavy-duty pneumatic equipment.
Process Air Systems
Centralized high-pressure utility networks supplying multi-machine production floors.
Marine & Offshore Auxiliary Systems
High-pressure starting and control air systems.
Safety, Compliance & Site Preparation
High-pressure rotating equipment and pressure vessels must comply with recognized international design and manufacturing standards to ensure structural integrity and operator safety. When evaluating equipment for global deployment, verify compliance with:
Pressure Equipment Directives or local pressure vessel certification codes
Electrical safety standards for control panels and drive motors
Safety relief valve sizing and certification for maximum allowable operating pressure (MAOP)
Installation & Site Preparation Guidelines
Proper site preparation is critical for stable high-pressure compressor operation:
Foundation: Solid, level concrete flooring capable of supporting total operational weight and dampening rotational vibration.
Ventilation: Adequate ambient airflow exchange or dedicated ducting to dissipate total thermal rejection from air-cooled or water-cooled heat exchangers.
Piping Integrity: Seamless steel piping or heavy-wall rated distribution networks with appropriate expansion loops and condensate drainage points.
Service Clearance: Minimum perimeter clearance around the enclosure for safe access to air/oil filters, separator elements, and cooler maintenance points.
FAQ
Q: What are the primary performance differences between high-pressure and conventional low-pressure screw compressors?
A: High-pressure screw compressors utilize specialized, heavily reinforced airends and multi-stage compression configurations designed to withstand pressure thresholds from 10 bar up to 30+ bar, whereas standard industrial compressors typically operate within the 7 to 10 bar range.
Q: Why is strict control over intake and ambient temperatures critical for high-pressure compressor systems?
A: Higher operating pressure ratios generate significantly elevated adiabatic compression temperatures; maintaining controlled ambient and intake conditions prevents thermal degradation or coking of the lubricating oil and avoids unexpected thermal shutdown events.
Q: What key maintenance procedures are required to ensure long-term operational reliability?
A: Routine maintenance focuses on the timely replacement of air filters, oil filters, and oil-gas separator elements, along with regular lubricant analysis and safety valve functionality checks.
Q: How does multi-stage compression improve overall operational stability in high-pressure applications?
A: Dividing the compression ratio across multiple stages reduces the thermal load per stage, minimizes internal leakage, and optimizes mechanical efficiency for continuous high-pressure delivery.
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