备压式七氟丙烷灭火系统应用中存在的问题

Problems in the application of prepared pressure type heptafluoropropane extinguishing system

在分析储压式七氟丙烷灭火系统存在的问题基础上,阐述备压式七氟丙烷灭火系统产生的原因及必要性。并将备压式七氟丙烷与储压式七氟丙烷系统在设计参数、计算方法等方面进行比较。从设计计算方法、确定喷头的最低工作压力、灭火剂开始喷放时间、驱动气体的用量、组合分配系统中如何保证各防护区的实际喷放浓度达到规定要求等方面指出备压式七氟丙烷应用中存在的一些问题,并提出改进建议。

After analyzing the problems in accumulator-type heptafluoropropane extinguishing system,elaborate the reasons and necessity of prepared pressure type heptafluoropropane system.The prepared pressure type and accumulator type heptafluoropropane system were compared in design parameters and calculation methods.Problems in the application of prepared pressure type heptafluoropropane system,such as calculation method design,deciding the lowest working pressure of sprinkler,time of extinguishing agent starting to spray,amount of driving gas,making sure the actual concentration in each protection zone reach the requirement of standard in combined distribution system,et al.were put forward,and improving methods were suggested.