防护呼吸设备性能对比和分析

Comparative Analysis of the Protective Breath Equipment Performance

本文对比分析了化学氧源PBE和高压气氧PBE这两种典型的防护呼吸设备的性能,并总结了两类PBE的特点和PBE的通用性能需求,进而分析了两类PBE的差异。由于使用的氧源不同,两类PBE在质量、体积、运输方式和激活方式等方面均有不同。化学氧PBE激活不当可能引起着火,高压气氧PBE的小氧气瓶可能发生爆炸,两类PBE均是飞机上的危险源。化学氧PBE有有效的防护措施,而高压气氧PBE没有,因此选择高压气氧PBE通过适航验证是有难度的。

This paper firstly compares and analyses the performance of two kinds of PBE：PBE with chemical oxygen source and PBE with high pressure oxygen source,then summarizes their characteristics,the general perfurmance requirements and differences. Due to the different oxygen source. there are performance difterences between the two kinds of PBE,eg.weight,volume,actigation mode.PBE with chemical oxygen source may cause fire if activation mode is improper.high pressure oxygen bottle of PBE with high pressure oxygen somx^e may be exploded in certain circumstances.They m^y both be hazard source on aircraft.Othewise,PBE with chemical oxygen source has effective protection measures for firc,PBE with high pressure oxygen source doesn＇t have any protection measures.So it may be difficulty to pass the certification of CAAC.