模块化数据中心感烟灭火装置优化设计

Optimal design of smoke fire extinguishing device in modular data center

针对模块化数据中心感烟灭火装置火灾探测灵敏度低、灭火介质效率低、储压式设计存在危险等问题,设计火灾探测与灭火一体化的感烟灭火装置。基于Mie散射原理,利用主动空气采样感烟探测技术进行早期火灾探测;利用光学仿真软件对探测暗室的光路进行模拟仿真,优化设计探测暗室结构;发明一种非储压式、洁净环保型全氟己酮灭火装置,装置具有多级报警设计。经测试,装置初、中、高级报警灵敏度分别为0.05,0.11,0.21 db/m。感烟灵敏度为Ⅰ级,灭火剂平均喷射时间为7.2 s,灭火时间平均为11.2 s,具有较高灵敏度和良好灭火能力,能够保障数据中心设备安全运行。

The paper designs the smoke-sensing fire-extinguishing device for fire detection and extinguishing,aiming at the problems of low sensitivity of fire detection,low efficiency of fire extinguishing medium,and danger in pressure storage design of modular data center.Based on Mie scattering principle,active air sampling smoke detection technology is used for early fire detection.The optical simulation software is used to simulate the optical path of the detection chamber,and the structure of the detection anechoic chamber is optimized.A non-pressurestoring,clean and environment-friendly perfluorohexanone fire extinguishing device was invented.The device has multi-level early warning and alarm design.According to the test,the concentrations of initial,medium and advanced early warning of the device are 0.05 db/m,0.11 db/m and 0.21 db/m respectively.The smoke sensitivity is class I,the average spraying time of fire extinguishing agent is 7.2 s,and the average extinguishing time is 11.2 s.It has high sensitivity and good fire extinguishing ability,which can ensure the safe operation of data center equipment.