论文部分内容阅读
1前言尽管长期以来,人们都知道防护区的密封性和灭火剂喷放过程中,建筑结构不受破坏的承压能力是灭火系统设计时必须考虑的两个基本因素,但是,有关气体灭火剂喷放过程中防护区内压力变化状况的资料却很少。洁净气体灭火剂喷放过程中室内压力的变化与灭火系统及防护区结构的许多因素有关,其中影响室内压力变化的一个主要因素是洁净气体本身的性质。惰性气体灭火剂的喷放特性是:防护区内的压力快速上升直到最大压力,然后随时间延长逐渐缓慢的减少。然而,卤代烃类灭火剂喷放时由于防护区及其中的物体被冷却,使其喷放特点是:开始时防护区内形成快速
1 Foreword Although it has been known for a long time that the pressure-bearing ability of a building structure to be undamaged during the sealing of a protected area and the discharge of an extinguishing agent is two basic factors that must be taken into account when designing a fire extinguishing system. However, There is very little information on the pressure changes in the protection zone during the discharge process. The change of indoor pressure during the discharge of clean gas fire extinguishing agent is related to many factors such as the fire extinguishing system and the structure of the protective zone. One of the main factors affecting the indoor pressure change is the nature of the clean gas itself. The discharge characteristics of the inert gas extinguishing agent are: the pressure in the protection zone rises rapidly up to the maximum pressure and then slowly decreases over time. However, the release of halogenated hydrocarbon fire extinguishing agent due to the protection zone and its objects are cooled, so that the discharge characteristics are: the beginning of the formation of rapid protection zone