An adaptive fine water mist and perfluorohexone composite fire extinguishing method and system based on fire scene thermal imaging dynamic feedback
Patent Information
- Application Number
- CN202611411449.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-09-11
- Publication Date
- 2026-10-16
AI Technical Summary
[0004]为了克服现有技术缺乏基于火势动态特征的自适应策略调整和双介质时序协同机制，无法实现闭环反馈优化等问题，本发明公开一种基于火场热成像动态反馈的自适应细水雾与全氟己酮复合灭火方法及灭火系统能有效解决上述技术问题
[0046]Compared with existing technologies, the beneficial effects of this invention are as follows: By constructing a multi-dimensional dynamic thermal zone map that includes temperature gradient distribution, thermal zone centroid coordinates and drift trajectory, thermal zone area expansion rate, and temperature field entropy, this invention can comprehensively quantify the spatial distribution characteristics and temporal evolution of fire, thereby overcoming the lag and misjudgment risk of traditional single temperature threshold judgment methods. Based on this, the invention identifies the current fire stage based on the dynamic thermal zone map and determines the pulsed synergistic spray strategy of fine water mist and perfluorohexanone according to different stages. This allows the spray parameters to dynamically adapt to the fire stage, avoiding the problem of decreased fire extinguishing efficiency when fixed-parameter spraying changes in fire intensity. Simultaneously, by establishing a preset phase difference relationship between the fine water mist pulse and the perfluorohexanone pulse, the synergistic coupling of the two extinguishing media in the spray sequence is achieved. This allows for both in-phase synergistic mode to achieve dual-media energy superposition to suppress rapidly spreading fires and out-of-phase synergistic mode to achieve energy superposition of the two media. The alternative mode fully leverages the chemical inhibition advantages of perfluorohexanone and the physical cooling advantages of fine water mist to cope with high-load fires in the fully developed stage. Furthermore, this invention continuously acquires real-time thermal field response data during the spraying process and adjusts the spraying strategy in a closed loop accordingly, forming a fully closed-loop fire extinguishing control link of monitoring, decision-making, execution, feedback, and adjustment. When the rate of thermal zone area contraction is insufficient, the perfluorohexanone pulse frequency and duty cycle are actively increased to enhance the chemical inhibition effect. When the rate of temperature field entropy decrease is insufficient, the fine water mist pulse width and spray pressure are increased to enhance the physical cooling effect. When the centroid of the thermal zone drifts, the nozzle pointing angle is adjusted in real time to achieve tracking fire extinguishing. When a local temperature rebound occurs, a perfluorohexanone emergency compensation pulse is triggered to quickly suppress the reignition trend, until the fire is completely suppressed. This improves the adaptive ability of the composite fire extinguishing system to complex fire scene environments and the fire extinguishing success rate, while effectively reducing the ineffective spraying and waste of extinguishing agents.