Explosion Proof Hydrogen Cooler For Hazardous Area Generator Room
Application & Hazard Zone Definition
Specially engineered for hydrogen-filled generator room (flammable H₂ atmosphere, Gas Group IIC per IEC60079):
Zone 1: Hydrogen may leak under normal operation (near generator stator, sealing points) → ATEX II2G Ex db IIC T4 / IECEx Ex d IIC T4
Zone 2: Hydrogen only releases under abnormal leakage (main generator room surrounding space) → ATEX II3G Ex e IIC T4 / Class I Div2 Group B (NEC US/Canada standard)
Core Use Case: 200MW/300MW/600MW/1000MW hydrogen-cooled turbo generator; coal-fired, combined cycle, nuclear & green hydrogen power plants across APAC, Middle East, Southeast Asia petro-power station.
Explosion-Proof Core Design (2 Key Parts: Heat Exchanger Body + Explosion-Proof Auxiliary Components)
① Cooler Thermal Core (Fin Tube Structure, Leakproof for H₂ containment)
Tube material: CuNi90/10 / Admiralty Brass / TP2 Copper / 316L SS; tube expanded + full argon arc welding, zero hydrogen permeation & leakage; helium leak test 100% before shipment
Fins: Helical wound aluminum/copper anti-corrosion fin, low surface temp ≤135℃ (T4 temperature class, no hot spot ignition risk for hydrogen)
Shell & water box: Carbon steel clad / cast gunmetal; reinforced pressure structure, H₂ side design pressure 0.4~0.8MPa, cooling water side 1.0~1.6MPa
② Full Explosion-Proof Electrical & Auxiliary Parts (Critical for Hazardous Area)
All electric accessories comply with IIC hydrogen explosion-proof grade:
Cooling water circulating pump: Ex d IIC T4 flameproof motor
Temperature/pressure transmitters & H₂ leakage sensors: Ex ia IIC T4 intrinsic safety (Zone0/1 available)
Control cabinet: Ex p pressurized cabinet / Ex d flameproof enclosure, positive nitrogen purge to block hydrogen ingress
Drain valves, vent fittings: Anti-spark stainless steel structure, static elimination design
Available Product Range
Vertical/Horizontal Standard Explosion-proof H₂ Cooler: 200MW~1000MW conventional thermal/nuclear generator
Compact Custom Explosion-proof Cooler: Small captive power plant, synchronous condenser hydrogen cooling system
Aftermarket Service: Explosion-proof cooler core retubing, spare Ex sensors/pumps, on-site overhaul for in-operation hazardous power rooms
Contact for Quotation
Please provide: Generator MVA rating, OEM part no., site hazardous zone classification (Zone1/Zone2 / Class I Div1/Div2), required certification standard
Email: [email protected]
