Core Functions of Air vessels

1.Buffer Pressure Fluctuations and Prolong Equipment Life
When the air compressor operates, air pressure fluctuates drastically due to the start/stop of gas-using equipment or changes in flow rate. The air vessel stores compressed air, effectively absorbing airflow pulsation and reducing frequent loading/unloading of the air compressor. This minimizes wear and tear on components like motors and valves.

For example, when gas consumption surges, the tank releases stored air to prevent the compressor from overloading. Conversely, when consumption decreases, excess gas is stored to maintain stable system pressure.

2.Energy Saving and Cost Reduction
Frequent start/stop of the air compressor wastes electricity (especially for line frequency motors, starting current can reach 7 times the rated value). By balancing air pressure, the air vessel extends the interval between compressor shutdowns and reduces no-load operation time. Data shows that reasonable tank configuration can cut energy consumption by 10%-20%.

3.Cooling, Debris Removal, and Air Quality Improvement
Compressed air generated by the compressor is high in temperature and contains moisture, oil mist, and particles. The large surface area and internal swirl structure of the tank accelerate air cooling, prompting moisture and impurities to settle at the bottom, which are then discharged via the drain valve.

This alleviates the burden on subsequent dryers and filters, enhances compressed air cleanliness, and prevents precision equipment from damage due to impurities.

4.Meet Sudden Demands and Ensure Production Continuity

When gas-using equipment suddenly requires a large amount of compressed air (e.g., rapid production line startup or equipment emergency repair), the tank serves as an emergency air source to avoid production interruptions caused by insufficient compressor supply. This is particularly crucial during unstable power supply or compressor maintenance.

5.Safety Protection Against Backflow Risks

If the compressor stops without an air vessel, compressed air in the pipeline may flow backward, damaging internal parts (e.g., rotors, seals). The tank physically isolates the system to block backflow risks.

Additionally, safety valves, pressure gauges, and other devices on the tank monitor pressure in real time to prevent overpressure explosions.

How to Choose air vessel

1.Volume Selection: Match Compressor Discharge

The tank volume is typically 10%-20% of the compressor's discharge. For example, a compressor with a discharge of 10 m³/min is recommended to use a 1-2 m³ tank. If gas consumption fluctuates significantly (e.g., intermittent production), the volume can exceed 20%.

2.Material and Standards: Safety First

Choose products compliant with Steel Pressure Vessels standards, and prioritize enterprises with pressure vessel manufacturing qualifications.

Stainless steel tanks offer strong corrosion resistance, suitable for high-humidity or chemical environments; carbon steel tanks have lower costs, ideal for general industrial scenarios.

3.Environmental Requirements

Install the tank in a ventilated, shaded area. For outdoor installation, add a rain cover.

4.Maintenance Specifications

Daily: Drain water at the tank bottom to prevent corrosion and bacterial growth.

Yearly: Calibrate safety valves and pressure gauges to ensure sensitivity.

Every 3-5 years: Conduct regular pressure vessel inspections to check for cracks or deformations.

Common Questions

Small air compressors don’t need air vessels

Even for micro compressors, a tank protects the motor by stabilizing air pressure. Some micro-devices integrate the tank with the compressor, also serving as an installation base.

1.Larger tank volume is always better

Excessive volume prolongs compressed air retention, increasing condensate generation. Calculate the reasonable volume based on peak gas consumption.

For limited space, choose horizontal tanks or split multi-tank parallel designs to flexibly adapt to production needs.