Utility tunnel fire experiment platform system and experiment method

Abstract

The invention disclose a utility tunnel fire experiment platform system and an experiment method. A linear fire source experiment frame with freely-adjustable positions and a high-power fire source calorimeter system suitable for pipe gallery fire are arranged in a utility tunnel fire simulation laboratory; the flame height measuring and smoke layer thickness measuring device is arranged outside the utility tunnel fire simulation laboratory, and is used for preforming high-definition video recording on a utility tunnel combustion chamber area, and processing the recorded video to obtain a curve of flame height and smoke layer thickness changing with time; and the linear fire source experimental frame with freely-adjustable positions is arranged in the utility tunnel fire simulation laboratory, and thus the accurate movement and positioning in the horizontal direction and the vertical direction can be realized. The system and the method can realize simulation experiments of internal fires in utility tunnel under multiple spatial positions, measure data such as mass loss rate of fire source, heat release rate, flame height of fire source, thickness of smoke layer in pipe gallery andthe like in real time, and lay a foundation for scientific research of fires in the utility tunnel.

Description

technical field [0001] The invention relates to a simulated fire experiment system, in particular to a comprehensive pipe gallery fire experiment platform system and an experiment method, belonging to the technical field of fire safety. Background technique [0002] The urban comprehensive pipe gallery, also known as the common ditch, is a modern and intensive urban infrastructure that is built in the underground tunnel space and integrates a variety of municipal pipelines. This comprehensive pipe gallery includes electricity, telecommunications, water supply and drainage, gas, etc. All kinds of professional pipelines, especially cable and natural gas pipeline warehouses are prone to fire, gas leakage and other accidents, so there are great fire safety hazards. [0003] At present, there are few domestic researches on the law of fire in integrated utility corridors and relevant research on prevention and control technologies. Compared with other underground spaces, the cross...

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Problems solved by technology

[0002] The urban comprehensive pipe gallery, also known as the common ditch, is a modern and intensive urban infrastructure that is built in the underground tunnel space and integrates a variety of municipal pipelines. This comprehensive pipe gallery includes electricity, telecommunications, water supply and drainage, gas, etc. All kinds of professional pipelines, especially cable and natural gas pipeline warehouses are prone to fire, gas leakage and other accidents, so there are great fire safety hazards

[0003] At present, there are few domestic researches on the law of fire in integrated utility corridors and relevant research on prevention and control technologies. Compared with other underground spaces, the cross-section of utility corridors is smaller and divided into several cabins, which is not conducive to the development of fire fighting and rescue. Therefore, Fire prevention is crucial

Most of the current fire alarm devices are installed with sensors on the top of the power cabin and connected to the control center. The fire monitoring is not accurate and the response is slow. False alarms occur frequently or the control center can only be activated after the fire spreads in a large area. The fire alarm missed the best time for fire rescue; and according to the cable arrangement of the cable compartment of the integrated pipe gallery, the fire source may occur at various positions in the cross section of the pipe gallery, but the existing technology lacks comprehensive simulation experimental instruments , for the heat release rate of the high-power fire source in the integrated pipe gallery, the existing public calorimetry methods and equipment are difficult to meet the heat measurement requirements of the pipe gallery fire

Chinese patent document CN201510957424.1 discloses a cone calorimeter based on the principle of oxygen consumption, but the disclosed flue gas collection method is difficult to meet the flue gas generated by a long and narrow high-power fire source, which will cause the flue gas to overflow. Seriously affects the accuracy of the calorimetric system

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