New Valve System Boosts Tunnel Fire Safety

In the confined environment of long tunnels, controlling fire outbreaks quickly and effectively presents unique challenges for protecting both lives and infrastructure. Water spray systems serve as a critical defense mechanism, with their automatic valves playing a pivotal role in system reliability and response time.

A newly developed automatic valve specifically designed for tunnel water spray systems has recently been introduced, marking a significant advancement in tunnel fire safety. This innovative device not only offers remote control capabilities but also addresses several limitations of conventional valves in tunnel environments.

The valve is primarily designed for large-scale tunnel water spray fire suppression systems, including AA-class tunnels. Its core function involves rapid activation during fire incidents, dispersing water in fine mist form to suppress fire spread while protecting tunnel structures and equipment from damage. Housed within dedicated valve compartments, these remotely controlled units enable precise firefighting operations.

• Secondary Pressure Auto-Regulation: The valve maintains consistent spray performance through automatic secondary pressure adjustment, compensating for primary water supply fluctuations to ensure uniform mist distribution and optimal fire suppression.
• Water Hammer Mitigation: Its specially engineered valve body structure effectively absorbs hydraulic shock waves during closure, preventing pipeline damage and reducing maintenance requirements.
• Negative Pressure Lockout: A high-tension spring mechanism combined with hydraulic pressure ensures valve closure during monitoring. This prevents accidental openings caused by transient negative pressure in supply lines.
• Power Failure Protection: An innovative pilot valve design maintains open operation during power outages caused by fires, ensuring continuous water discharge to support evacuation and firefighting efforts.
• Dual Control Operation: The system offers both remote electrical control through pilot valves and manual override capability, providing operational flexibility in diverse emergency scenarios.

This technological advancement establishes a robust safety barrier for tunnel fire protection. The valve's enhanced efficiency, stability, and reliability are expected to significantly reduce fire-related losses while safeguarding public safety and critical infrastructure.