CNWINNEX, deeply rooted in the safety and emergency response field, empowers life protection with professional technology. Our Explosion-Proof Pressurized Personnel Refuge Chamber is specifically designed for emergency evacuation in hazardous areas. Integrating advanced pressurized explosion-proof technology with comprehensive life support systems, it creates a mobile, rapidly deployable "Safe Haven for Life" within explosive gas or dust atmospheres. Using technological power to protect lives, this is the most solid and reliable sanctuary when danger strikes.
In flammable and explosive environments such as petroleum, chemical, military, and pharmaceutical industries, emergency situations like sudden leaks, fires, or explosions occur frequently, posing fatal threats to personnel safety. How to provide a safe, reliable, and sustainable temporary refuge for on-site workers during the golden rescue window has become a critical mission in safeguarding lives.
CNWINNEX, deeply rooted in the safety and emergency response field, empowers life protection with professional technology. Our Explosion-Proof Pressurized Personnel Refuge Chamber is specifically designed for emergency evacuation in hazardous areas. Integrating advanced pressurized explosion-proof technology with comprehensive life support systems, it creates a mobile, rapidly deployable "Safe Haven for Life" within explosive gas or dust atmospheres. Using technological power to protect lives, this is the most solid and reliable sanctuary when danger strikes.
Core Advantages: Life First, Safety Without Boundaries
● Pressurized Explosion-Proof, Isolating Hazards
Strictly compliant with ATEX and IECEx international explosion-proof standards (Ex p/px, py), utilizing continuous airflow pressurization protection principle. By continuously introducing clean air or nitrogen into the chamber, a stable positive pressure environment is established, fundamentally preventing the ingress of external explosive gases or dust. The system features automatic compensation, intelligent purge cycles, real-time pressure monitoring, and audible/visual alarm interlocks, ensuring safety inside the chamber at all times and eliminating any potential hazards.
● Life Support, Full Protection
Integrated with redundant air supply systems capable of supporting multiple personnel for extended refuge periods, with standard sustained air supply ≥2 hours, flexibly expandable based on customer requirements. Built-in oxygen concentration monitoring, CO₂ absorption devices, and air purification systems ensure air quality meets safety standards. Emergency lighting, two-way communication equipment, first aid kits, and more are fully equipped, providing comprehensive support for trapped personnel while awaiting rescue, safeguarding the lifeline.
● Robust Protection, Withstanding Extremes
The chamber features high-strength specialized steel construction with premium fire-resistant and thermal insulation layers, providing excellent impact resistance, fire protection, and corrosion resistance. With an IP65 enclosure rating, it confidently withstands dust, sand, rain, snow, solar radiation, and extreme temperature challenges. Whether in scorching desert oil fields, frigid polar mining areas, or complex offshore drilling platforms, it operates stably, offering a safe and comfortable refuge environment for occupants.
● Rapid Deployment, Flexible Adaptation
Constructed with modular integrated design, compact structure for easy transport, and quick lifting/installation based on site requirements, significantly reducing emergency response time. Chamber dimensions, internal layout, and interface positions can be customized to flexibly adapt to different emergency evacuation or temporary use scenarios, balancing practicality and convenience.
● Intelligent Monitoring, Remote Connectivity
Integrated with an advanced control system, it displays real-time key parameters such as internal pressure, temperature, oxygen levels, and battery status for clear visibility. Supports remote alarm transmission and DCS system integration, enabling the control room to monitor chamber conditions instantly and formulate precise rescue plans, improving rescue efficiency and gaining precious time for life-saving operations.
Technical Specifications & Application Scope
● Hazardous Area Classification: Suitable for Zone 1 and Zone 2 with IIA, IIB, IIC explosive gas atmospheres; and Zone 21 and Zone 22 with combustible dust atmospheres
● Temperature Class: T1 to T4
● Enclosure Rating: IP65 for both indoor and outdoor installation
● Target Industries: Petroleum, chemical, military, pharmaceutical, hazardous chemical warehousing, pipeline transportation, and various flammable/explosive environments
● Personnel Capacity: Customizable, standard configuration accommodates 2-6 persons (expandable)
● Sustained Air Supply: Standard ≥2 hours (upgradable as needed)
Typical Applications
● Petrochemical Plants: Provides emergency refuge space for on-site workers during sudden leaks or fires, avoiding toxic gases and high-temperature injuries
● Hazardous Chemical Terminals/Tank Farms: Serves as a temporary safety zone during loading/unloading operations, preventing safety risks from material leaks
● Military/Explosive Sites: Acts as a protective shelter during high-risk operations, ensuring personnel safety
● Pipeline/Well Site Emergency Repairs: Functions as both personnel refuge and temporary equipment shelter in field emergency repair scenarios
● Offshore Drilling Platforms: Equipped with special protection for marine hazardous conditions, achieving comprehensive emergency evacuation coverage
CNWINNEX explosion-proof systems are widely deployed in oil & gas, petrochemicals, pharmaceuticals, ports & terminals, mining, power generation, offshore platforms, and other areas where flammable gases or dusts are present. Typical applications include control room climate control, hazardous area logistics and access management, video surveillance & security, pressurized analyzer shelters, robotic inspection, as well as custom explosion-proof enclosures and system integration.
An explosion-proof air conditioner is a specialized HVAC unit designed for hazardous environments where flammable gases, vapors, or combustible dusts are present (e.g., petrochemical plants, gas stations, paint booths, pharmaceutical labs).
The most critical difference from a standard air conditioner lies in “active ignition prevention.” Standard units generate tiny sparks during normal operation – such as when relays open/close, compressors start/stop, or circuits make/break. While safe in normal air, these sparks can be deadly in an explosive atmosphere.
CNWINNEX’s explosion-proof design is based on the T4 temperature class. For high-temperature regions such as the Middle East or areas with extreme summer heat, we offer custom units rated for ambient temperatures up to 60°C (140°F) , ensuring reliable operation without overload in harsh tropical climates. For cold regions, we offer custom units rated for ambient temperatures as low as -50°C (-58°F) , guaranteeing safe operation in extreme arctic conditions.
The explosion-proof rating of CNWINNEX air conditioners is:
Ex 2 G D Ex db ib mb IIB T4 Gb / Ex 2 G D Ex db ib mb IIC T4 Gb / Ex ib mb tb IIIC T130°C Db
●For Gas (G): Ex db ib mb IIC T4 Gb
Suitable for IIC gas groups (including hydrogen, acetylene, etc.), using flameproof (db), intrinsic safety (ib), and encapsulated (mb) combined protection. Temperature class T4 (max surface temperature ≤135°C), Equipment Protection Level Gb.
●For Dust (D): Ex ib mb tb IIIC T130°C Db
Suitable for IIIC conductive dusts, using intrinsic safety (ib), encapsulation (mb), and dust-tight (tb) protection. Maximum surface temperature 130°C, Equipment Protection Level Db.
CNWINNEX products comply with international explosion-proof certification standards such as ISO, CNEX, ATEX, IECEx, SAA, EAC, ensuring safe use in different countries and regions., and BV or DNV (for offshore applications) . Depending on the product type and zone classification, we offer various protection concepts including Ex d, Ex e, Ex ib, and Ex nA, with ingress protection up to IP66/IP67, ensuring safe and compliant operation in hazardous environments worldwide.
Absolutely. Explosion-proof Custom Engineering is our sixth core business. From non-standard Ex components (special material junction boxes, intrinsically safe sensors, etc.) to integrated Ex systems (skid-mounted control rooms, pressurized cabins, legacy equipment retrofitting), we provide full-process custom services covering conceptual design, 3D simulation, compliance certification, manufacturing, and delivery. Simply share your operating parameters and functional needs, and we will engineer a dedicated explosion-proof safety solution for you.
Please give us a message