Does the air compressor room need explosion-proof design?

Whether the air compressor room needs explosion-proof design depends onCompression media, environmental risks, equipment typeandregulatory requirements, the specific judgment is as follows:

1. Scenarios requiring explosion-proof design

1. compressed combustible gas
   • If the air compressor is used to compress flammable gases such as hydrogen, natural gas, and coal gas, the machine room needs to press theATEX/NFPA Explosion-proof StandardsDesign.
   • measures: Adopt explosion-proof motors, explosion-proof electrical components, and equipped with gas leakage monitoring and alarm system.
2. Explosive substances in the environment
   • In petrochemicals, coal mines and other environments containing oil, gas and dust, even compressed air requires explosion-proof design.
   • measures: Positive pressure ventilation in the machine room (keep the internal pressure higher than the external pressure) to prevent the infiltration of external combustible gases.
3. Special process requirements
   • Industries that use solvents such as spraying and pharmaceuticals require explosion-proof treatment if the air compressor is connected to the process gas pipeline.

2. Conventional scenarios that do not require explosion protection

• compressed air: Ordinary industrial scenarios (such as manufacturing workshops) compress clean air, and the machine room does not need to be explosion-proof.
• Independent computer room: Keep away from explosive environments and there is no risk of leakage of combustible gases.

3. Key elements of explosion-proof design

1. equipment selection
   • Motor: Select Ex d IIB T3 explosion-proof rating (suitable for most combustible gases).
   • Pipe: Use galvanized steel pipes or stainless steel pipes to avoid sparks.
2. ventilation system
   • The ventilation volume needs to meet: room volume × air changes (≥8 times/hour).
   • Inlet/exhaust outlet locations need to avoid accumulation of combustible gases.
3. Grounding and anti-static
   • Equipment grounding resistance ≤4Ω, and anti-static floor shall be laid.
4. monitoring and alarm
   • Install combustible gas detectors (range 0-100%LEL) and link explosion-proof fans.

4. Legal basis

• China standard: GB50058 Code for the Design of Electrical Installations in Explosive Hazardous Environments
• International standards: ATEX 94/9/EC (EU), NFPA 497 (North America)

Note: Explosion-proof design requires risk assessment and certification by professional organizations and cannot be judged based on experience alone.