Cable tunnel fire experiment based on linear temperature sensing fire detectors

DING Hong-jun; FAN Dian; YAO Hao-wei

doi:10.3788/OPE.20132109.2225

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Cable tunnel fire experiment based on linear temperature sensing fire detectors

更新时间：2020-08-12

- Cable tunnel fire experiment based on linear temperature sensing fire detectors
- Optics and Precision Engineering Vol. 21, Issue 9, Pages: 2225-2230(2013)
- 作者机构：
  
  1. ．武汉理工大学光纤传感技术国家工程实验室，湖北武汉 430070
  2. 中山大学广东省消防科学技术重点实验室，广东广州 510006
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20132109.2225
  CLC： TP212.11;X932
- Received：11 March 2013，
  
  Revised：06 May 2013，
  
  Published Online：30 September 2013，
  
  Published：15 September 2013
- 稿件说明：
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丁宏军范典姚浩伟. 基于线型感温火灾探测器的电缆隧道火灾实验[J]. 光学精密工程, 2013,21(9): 2225-2230

DING Hong-jun FAN Dian YAO Hao-wei. Cable tunnel fire experiment based on linear temperature sensing fire detectors[J]. Editorial Office of Optics and Precision Engineering, 2013,21(9): 2225-2230
丁宏军范典姚浩伟. 基于线型感温火灾探测器的电缆隧道火灾实验[J]. 光学精密工程, 2013,21(9): 2225-2230 DOI： 10.3788/OPE.20132109.2225.

DING Hong-jun FAN Dian YAO Hao-wei. Cable tunnel fire experiment based on linear temperature sensing fire detectors[J]. Editorial Office of Optics and Precision Engineering, 2013,21(9): 2225-2230 DOI： 10.3788/OPE.20132109.2225.

摘要

研究了线型感温火灾探测器应用于电缆隧道场所电缆火灾早期探测的工程适用性。以电缆隧道为应用环境，基于现有的线型感温火灾元件：感温电缆、光纤拉曼感温探测器和光纤光栅感温探测器，建立了实验平台，设定了不同火灾的实验场景，记录了火灾模拟试验中的温度变化和探测器响应时间。实验显示，对于初起无明火的小规模火灾，其热辐射量小，除了与其直接接触的感温火灾探测器能做出报警响应外，其余非接触式的探测器均无法响应。对大规模火灾，光纤拉曼感温探测器和光纤光栅感温探测器的报警反应时间均在30 s左右，热电偶记录的火灾发生上方60 s以内的温度都在35 ℃以下，而3 m内的温升都超过5 ℃/min。根据3种探测器的技术特点，分析了典型线型感温火灾探测器应用于电缆隧道场所火灾早期探测的工程适用性，为规范编写《火灾报警设计规范》的相关条款提供了技术支持。

Abstract

The engineering suitability of typical linear heat detectors for early fire detection in cable tunnels was explored. In cable tunnel environments

an experimental platform was established based on exiting linear temperature fire detectors

including temperature sensing cables

fiber Raman detectors and fiber grating detectors

then two different fire experimental scenes were set up

and the temperature variation and fire detector response time were recorded in the processing of fire simulation. The experiments show that only directly contacting heat detectors can give an alarm response and other non-contact detectors are unable to respond the small-scale fire because a small amount of thermal radiation has no flame for the beginning of the fire. Furthermore

for massive fire

the alarm response time of both fiber Raman sensing heat fire detector and fiber grating sensing fire detector is about 30 s

the temperature over the fire recorded by a thermocouple is less than 35 ℃ in 60 s

while the temperature rising is more than 5 ℃/min within the range of 3 m. According to the technical characteristics of the three detectors

the engineering suitability of the typical linear heat detectors in cable tunnels early fire detection is analyzed

which can provide technical support for establishing the design specifications of fire alarm.

关键词

Keywords

references

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