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Roof fire collapse early warning device based on temperature field and positioning and using method

A technology of early warning device and temperature field, which is applied in the field of emergency rescue of building fire accidents, can solve the problems of deflection deformation, difficulty in capturing and determining the deformation process and its value, and difficult observation of the ground, so as to increase reliability, scientificity and Safety, easy debugging effects

Pending Publication Date: 2020-10-09
应急管理部天津消防研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The present invention overcomes the problems in the prior art: the devices, technologies and methods used to solve the problem of collapse warning in building fire accidents all focus on the collapse of multi-storey and high-rise buildings under fire (mainly due to horizontal inclination deformation), but not for large space places This kind of roof structure with a large planar area usually collapses under fire (it is not easy to observe around the ground, mainly due to deflection deformation), and the collapse development process of this large-span roof structure is passed through the current method. It is difficult to capture and determine the deformation process and magnitude by observing the lateral deformation of the supporting walls around the building.

Method used

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  • Roof fire collapse early warning device based on temperature field and positioning and using method
  • Roof fire collapse early warning device based on temperature field and positioning and using method
  • Roof fire collapse early warning device based on temperature field and positioning and using method

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Experimental program
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Effect test

Embodiment 1

[0149] S1. After arriving at the building site where the fire broke out, place the disposal unit 2 in a ground safety area around the building where the fire broke out and supply power;

[0150] S2. The fire investigators immediately learned that the oil barrels on fire were stored in a large warehouse with an area of ​​A. sp =575m 2 And the building plane is rectangular, with two roller shutter doors diagonally opposite to the north and south, and the south side has been fully opened. It is a flat quadrangular pyramid grid structure, and the surface of the rods is coated with a 25mm thick fireproof coating according to the design. The time of fire is about 11 minutes before the fire, and the fire location is roughly located on the west side of the center of the ground inside the building. Oil storage tank fire q≈2.5MW / m 2 , inputting the above investigation information into the building and roof structure information input module of the disposal unit 2;

[0151] S3. Two pe...

Embodiment 2

[0169] S1, S2 steps of embodiment 2 are the same as S1, S2 steps of embodiment 1;

[0170] S3. Set up the existing supporting projection equipment in the suitable area on the ground around the building on fire, use the existing unmanned reconnaissance equipment to observe the shape of the roof and infrared thermal imaging, and select at least three near the edge of the roof, and the connection line can include the seriousness of the roof. The center of the area affected by the fire and the corresponding roof position in the grid avoiding the main load-bearing structure of the roof are used as detection points. Fix one of the detection parts 1 on the projection equipment through the projection joint assembly 1-6, after further moving and adjusting the detection part 1 to the predetermined projection position, drive the projection equipment to separate from the projection joint assembly 1-6, and the detection part 1 passes through the roof The piercing assembly 1-1 pierces and i...

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Abstract

The invention relates to a roof fire collapse early warning device based on a temperature field and positioning and a using method. Arriving at a fire construction site, a fire detector inputs basic information to a building and roof structure information input module; a roof forcible entry person pierces the roof at a detection point and arranges at least three detection parts; a disposal part receives signals sent by the detection parts, and the three detection parts form a triangle including the center of a severely affected area of the roof, or projection equipment is used, and a wirelesscommunication machine of a rescuer is connected with a fire-fighting rescuer position dynamic acquisition module; in the collapse early warning monitoring process, a fire scene rescue commander pays attention to on-site fire behavior development condition information, an early warning grading module automatically determines the early warning level in real time and transmits an early warning instruction to an early warning sending module, a light display elevation recognition assisting assembly displays deformation of the detection point; and finally personnel threatened by collapse evacuate toa safe area. The device and method are provided for fire extinguishing rescue and related experiments, and huge social public safety benefits are achieved.

Description

technical field [0001] The invention relates to the field of emergency rescue (disposal) of building fire accidents, in particular to a roof collapse pre-warning device under fire based on temperature field and positioning and its use method, which is aimed at the roof structure of large space places based on the temperature field near the roof in the inner space of the building A roof structure collapse warning device under fire and a corresponding use method for the spatial positioning of the roof structure seriously affected by fire. Background technique [0002] In a fire accident, there is a risk of collapse (collapse) of the building structure, which will threaten the safety of users who are not evacuated in time and firefighting and rescue personnel, and will increase property losses at the same time. Forecasting the collapse of building structures in fire accidents is a realistic demand for emergency response to building fire accidents, but it is also a worldwide pro...

Claims

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Application Information

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IPC IPC(8): G08B21/18G08B25/10G08B7/06G01K7/02G01K1/14G01C5/00G01B21/00
CPCG08B21/182G08B25/10G08B7/06G01K7/02G01K1/14G01C5/00G01B21/00
Inventor 尹亮
Owner 应急管理部天津消防研究所
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