主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2023, Vol. 42 ›› Issue (1): 9-12.

• • 上一篇    下一篇

升温模式对防火密封胶燃烧及理化性能的影响

张佳庆1 ，柯艳国2 ，黄玉彪1 ，蒋恭华3
  

  1. 1. 国网安徽省电力有限公司电力科学研究院 电力火灾与安全防护安徽省重点实验室(国家电网公司输变电设施火灾防护实验室)，安徽 合肥 230601；2. 国网安徽省电力有限公司，安徽 合肥 230061；3. 中国地质大学（武汉）工程学院，湖北 武汉 430074
  • 出版日期:2023-01-15 发布日期:2023-01-15
  • 作者简介:张佳庆（1987- ），男，安徽桐城人，国网安徽省电力有限公司电力科学研究院高级工程师，博士，主要从事电力火灾与安全防护研究与管理，安徽省合肥市经济技术开发区紫云路 299 号，230601。
  • 基金资助:
    国家电网公司科技项目（52120521000F）

The influence of fire heating modes on the combustion and physicochemical properties of fireproof sealant

Zhang Jiaqing1 , Ke Yanguo2 , Huang Yubiao1 , Jiang Gonghua3
  

  1. 1. State Grid Anhui Electric Power Research Institute, Anhui Province Key Laboratory of Electric Fire and Safety Protection (State Grid Laboratory of Fire Protection for Transmission and Distribution Facilities), Anhui Hefei 230601, China; 2. State Grid Anhui Electric Power Co., Ltd., Anhui Hefei 230061, China; 3. Faculty of Engineering, China University of Geosciences, Hubei Wuhan 430074, China
  • Online:2023-01-15 Published:2023-01-15

摘要：

为研究防火密封胶在不同火灾场景下的燃烧及理化性能变化，针对特高压直流换流站中可能出现的标准、电力及碳氢火灾情况，研究 3 种升温模式对防火密封胶燃烧过程的影响及燃烧后不同时刻的理化性能变化。燃烧过程重点关注质量变化，理化性能重点关注腐蚀性、耐水性、耐酸性、耐碱性、耐油性、耐湿热性和耐冻循环性等，进而比较 3 种升温模式对防火密封胶的影响。结果表明：电力和碳氢火灾的前期危险性远高于标准火灾。燃烧 120 min 后，3 种升温模式下防火密封胶的总失重率基本相同，均达到 85%。火灾升温后，防火密封胶的耐水性和耐酸性都被严重破坏。电力火灾和碳氢火灾较标准火灾对防火密封胶的耐湿热性和耐冻融循环性影响更大。

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Abstract:

In order to study the combustion and physicochemical properties of fireproof sealant in different fire scenarios, according to the standard, power and hydrocarbon fire that may occur in UHV DC converter stations, the effects of three fire heating modes on the combustion process of fireproof sealant were studied. Changes of physicochemical properties at different time after combustion were studied too. The mass loss was paid attention to during the combustion process. The corrosion resistance, water resistance, acid resistance, alkali resistance, oil resistance, humidity and heat resistance and freeze cycle resistance were focused more among all physicochemical properties. Then the effects of three fire heating modes on fireproof sealant were compared. The results show that the early danger of power and hydrocarbon fire is much higher than that of standard fire. After 120 minutes of combustion, the total mass loss rate of fireproof sealant under the three heating modes is basically the same, reaching 85% . After the fire, the water resistance and acid resistance are seriously damaged. Electric fire and hydrocarbon fire have a greater impact on the damp heat resistance and freeze- thaw cycle resistance of fireproof sealant than standard fire.

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