China Suppliers and Factory: Oil-Free Oxygen Compressor for Safe and Pure Compressed Oxygen
Oxygen Diaphragm Compressor Advantages
Absolutely Oil-Free & Ultimate Purity Assurance
The structure of the diaphragm compressor ensures that oxygen is 100% free from contact with any lubricating oil during compression, perfectly complying with the absolute oil prohibition rule for oxygen compression. This not only prevents violent oxidation reactions and explosion risks but also guarantees the purity of the outlet oxygen, making it particularly suitable for medical oxygen generation, high-purity oxygen preparation, and fine chemical processes with stringent oil-free requirements.
Zero Leakage Static Seal Safety
Utilizing static seal structures such as diaphragm isolation and O-rings, zero leakage from the gas side to the environment is achieved. This is crucial for preventing the accumulation of oxygen in the compressor room, which could create an oxygen-enriched environment (an oxygen concentration >23% significantly increases fire risk), providing the highest level of safety protection for operators and equipment.
Key Design Points for Oxygen Diaphragm Compressors
Special Material Selection & Strict Degreasing Treatment
All wetted parts in contact with oxygen, such as the cylinder head, diaphragm, gas valves, and piping, must be made of materials that are oxidation-resistant, low-friction, and do not produce dangerous reactions through incompatibility. Stainless steel (e.g., 304, 316L) or nickel-based alloys are typically selected. Before manufacturing and assembly, all components must undergo thorough degreasing cleaning to remove any grease residue. This is fundamental for preventing auto-ignition incidents.
Diaphragm Safety Monitoring & Redundant Design
A three-layer diaphragm structure is adopted, integrated with a diaphragm rupture alarm system. Once an outer diaphragm is damaged, the pressure change in the middle layer immediately triggers a pressure switch, producing an audible and visual alarm and automatically initiating an interlock shutdown. This prevents oxygen from entering the oil system or hydraulic oil from contaminating the gas, forming a critical safety barrier.
Optimized Oil Circuit & Cooling System Design
The precise hydraulic oil circuit system must ensure stable oil pressure that is always slightly higher than the gas pressure to protect the diaphragm and ensure compression efficiency. Simultaneously, efficient inter-stage coolers and an after-cooler must be configured to strictly control the discharge temperature at each stage, preventing excessive temperature rise of the oxygen that could exacerbate material oxidation risks or become an ignition source. The cooling system typically needs to be equipped with flow and temperature monitoring and interlock protection.
Certificates
Model Selection
| No. | Model | Cooling Water | Flow | Inlet Pressure | Outlet Pressure | Dimensions L×W×H | Weight | Motor Power |
|---|---|---|---|---|---|---|---|---|
| (L/h) | (Nm³/h) | (MPa) | (MPa) | (≈mm) | (≈kg) | (kW) | ||
| 1 | GZ-12/（30-50）-70 | 1000 | 12 | 3-5 | 7 | 1400×850×1320 | 900 | 7.5 |
| 2 | GZ-15/6-30 | 1000 | 15 | 0.6 | 3 | 1400×850×1320 | 900 | 11 |
| 3 | GZ-35/7-20 | 1000 | 35 | 0.7 | 2 | 1400×850×1320 | 1000 | 11 |
| 4 | GV-18/（13-20）-200 | 1000 | 18 | 1.3~2 | 20 | 1250×900×1200 | 1020 | 11 |
| 5 | GV-8/6-150 | 800 | 8 | 0.6 | 15 | 2200×1650×1450 | 1000 | 7.5 |
| 6 | GV-30/16-200 | 1500 | 30 | 1.6 | 20 | 2600×1800×1700 | 3000 | 15 |
| 7 | GV-30/（7-18）-300 | 2000 | 30 | 0.7-1.8 | 30 | 2600×1800×1700 | 3000 | 18.5 |
| 8 | GV-40/50-500 | 2000 | 40 | 5 | 50 | 2600×1800×1700 | 3000 | 22 |
| 9 | GD-100/（0.25-4）-350 | 8000 | 100 | 0.025-0.4 | 35 | 4000×2300×2000 | 5000 | 75 |
| 10 | GD-60/（5-10）-350 | 6000 | 60 | 0.5-1 | 35 | 3200×2300×1500 | 4000 | 55 |
| 11 | GD-100/17-400 | 7000 | 100 | 1.7 | 40 | 3600×2300×1800 | 6000 | 55 |
| 12 | GD-300/8-200 | 12000 | 300 | 0.8 | 20 | 4000×2300×2000 | 10000 | 132 |
CASE STUDY
Frequently Asked Questions (FAQ)
Why is an oil-free design critical for oxygen diaphragm compressors?
Oxygen is highly reactive under pressure. Any contact with lubricating oil can trigger violent oxidation reactions and explosion hazards. The oil-free design ensures absolute operation safety and guarantees the ultimate purity of the output oxygen gas.
How does the static seal design prevent oxygen leakage?
By utilizing diaphragm isolation and high-grade O-rings, the compressor forms a static seal that prevents gas from leaking into the ambient air. This keeps the room below 23% oxygen concentration, avoiding fire risks associated with oxygen-enriched environments.
What wetted materials are used in these compressors?
We strictly select oxidation-resistant, low-friction materials such as stainless steel (304 or 316L) and nickel-based alloys. Furthermore, all components undergo a strict degreasing cleaning treatment to remove grease residues prior to assembly.
How does the diaphragm rupture alarm system work?
It features a three-layer diaphragm design. If any diaphragm layer is damaged, the pressure change in the middle layer triggers a pressure switch. This instantly alerts operators via an alarm and initiates an automatic interlock shutdown to prevent contamination.
What cooling methods are available for the compressors?
Depending on the specific model and operational requirements, both water-cooled and air-cooled systems are available. Inter-stage and after-coolers are configured to keep discharge temperatures low and prevent thermal risks.
How do I decode the model numbers for selection?
The model name indicates the compressor type, piston stroke, flow rate, inlet pressure, and outlet pressure. For example, "GZ-12/(30-50)-70" signifies a diaphragm type compressor (G) with a 70mm piston stroke (Z), a flow rate of 12 Nm³/h, an inlet pressure of 30-50 barg, and an outlet pressure of 70 barg.