Does the compressed air storage tank need to drain water?

Compressed air reservoir when not in use need to drain water to avoid equipment corrosion and safety hazards caused by moisture accumulation. The following is a detailed analysis:

source of Moisture in 1. Gas Tank

1. air compression process
   • when the air is compressed, the water vapor in the air will form condensed water under the action of high pressure and temperature rise.
   • The air storage tank is not only used to store compressed air, but also plays the role of preliminary cooling air. During the cooling process, water vapor in the air will condense into water droplets.
2. Environmental factors
   • in a humid environment, the moisture content in the air is higher, and more condensed water is produced after compression.
3. Equipment factors
   • if the automatic drainer of the air compressor is blocked or the automatic drainer of the air storage tank fails, the accumulated water cannot be discharged in time.
   • If the dryer is not installed or the dryer is not working properly, it will also increase the moisture content in the compressed air.

Maintenance Requirements for 2. Gas Storage Tank

1. daily use
   • drainage frequency: Drain the gas tank at least 2 times per shift.
   • Daily inspection: Check the indication value of the pressure gauge every day, check whether the safety valve is flexible and unblocked every month, and check whether the weld is firm and the sealing ring is aging every year.
2. Long-term idle
   • water release operation: Even if the gas storage tank is not used for a long time, it is necessary to remove the moisture in the tank to prevent the accumulation of moisture from causing corrosion and rust inside the tank.
   • Storage environment: Choose a dry, ventilated, non-corrosive gas indoor place for storage, avoid direct sunlight and rain.
   • Periodic inspection: Check whether the tank body is cracked, deformed, rusted and other abnormal conditions, whether the connection parts such as valves and pipes are fastened and reliable, and whether the safety accessories (such as pressure gauge and safety valve) are within the validity period.
   • Maintenance regularly clean the surface of the tank to remove dirt and rust; lubricate valves, pipes and other components; check and repair safety accessories.

Advice on management of gas storage tanks not used for a long time in 3.

• Idle time control: Try to avoid long idle time, so as to avoid corrosion, rust and other problems inside the tank.
• Special anti-corrosion measures: For long-term storage, special anti-corrosion measures should be considered to protect the integrity of the gas storage tank.

Conclusion: The compressed air storage tank also needs to be drained when not in use to prevent moisture accumulation from causing corrosion and rust inside the tank. At the same time, long-term idle gas storage tanks also need to pay attention to the storage environment, regular inspection and maintenance to ensure their safety performance and extend their service life.