烟和热控制系统. 第7部分: 烟道节段

[中文适用范围]： 本文件适用于市场上的排烟管道部分，旨在作为压差系统或排烟排热系统的一部分运行。 本文件规定了要求并参考了为防烟管道部分及其相关部件（例如，吊架和在测试时经过验证的其他物品）定义的测试方法，这些部件旨在安装在建筑物的此类系统中。 此外，本文件中还提供了有关这些产品的安装和维护的标记和信息。 注：为避免重复，参考了各种其他标准。 为此，本文件可结合 EN 1366-8、EN 1366-9 和 ISO 6944-1 来了解耐火测试的详细信息，并结合 EN 13501-4 来了解相应的分类。 本文件没有详细考虑大气中存在的工艺化学品可能引起的有害和/或腐蚀影响，这些化学品有意或无意地通过系统吸入。 本文件还管理与防烟管道部分一起使用的相关组件，例如转向叶片和消音器，但自然和动力排烟通风机和防烟风阀除外，它们由单独的标准涵盖。 本文件不涵盖用于排烟和排热/控制系统以外用途的管道。 [外文原描述]： ISO 21927-7:2017 applies to smoke control duct sections placed on the market and intended to operate as part of a pressure differential system or smoke and heat exhaust system. This document specifies requirements and gives reference to the test methods defined for smoke control duct sections and their associated components (for example, hangers and other items proven at the time of testing), which are intended to be installed in such systems in buildings. Furthermore, marking and information on installation and maintenance of these products are also given in this document. NOTE To avoid duplication, reference is made to a variety of other standards. To this end, this document can be read in conjunction with EN 1366‑8, EN 1366‑9 and ISO 6944‑1, for details of the fire resistance testing and EN 13501‑4 for corresponding classification. ISO 21927-7:2017 has not considered in detail the detrimental and/or corrosive effects that may be caused by process chemicals present in the atmosphere, which are drawn through the system intentionally or inadvertently. ISO 21927-7:2017 also governs associated components used together with smoke control duct sections such as turning vanes and silencers, with the exception of natural and powered smoke ventilators and smoke control dampers, which are covered by separate standards. Ducts for use other than in smoke and heat exhaust/control systems are not covered by this document.