Simulation experiment device and experiment method for mixed ventilation system of metro depot
A technology for simulating experimental devices and subway depots, which is applied in the field of simulating experimental devices for hybrid ventilation systems in subway depots, can solve the problem that it is difficult to completely and accurately reflect the movement characteristics of flue gas, lack of experimental data, and the overall operating characteristics of the hybrid ventilation system. It is difficult to study the rules in depth and other problems, so as to achieve the effect of improving the accuracy of the results, being convenient and simple to use, and improving the scope of application.
Inactive Publication Date: 2017-05-31
NANJING UNIV OF TECH
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Problems solved by technology
, due to the lack of experimental research, it is difficult to conduct in-depth research on the overall operating characteristics of the hybrid ventilation system and the law of airflow in the building. Completely and accurately reflect the movement characteristics of smoke in the building when the mixed ventilation system is running
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[0031] Such as Figure 1-6 As shown, a simulation experiment device of a mixed ventilation system in a subway depot includes a building structure simulation device, a data acquisition device 3, a flow guide device 4, a ventilation device 5, a combustion device 9, a computer 13, and a temperature measurement device 14. The building structure simulation device is an upper and lower double-layer structure building model with a size of 2.2m in length, 1.4m in width, and 0.39m in height. The building structure simulation device includes a bottom layer 2 and a mezzanine 1 located above it; the bottom layer 2 It includes a bottom plate 21 and a top plate 22 parallel to it. The bottom plate 21 and the top plate 22 are connected by four side plates 23 to form a hollow rectangular parallelepiped structure. The interlayer 1 includes a cover plate 11 and a number of support columns 12, so The cover plate 11 is arranged above the top plate 22 in parallel, and the cover plate 11 is connected...
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The invention relates to a simulation experiment device and an experiment method for a mixed ventilation system of a metro depot. The device comprises a building structure simulation device, and temperature measurement devices, ventilation devices, flow guide devices and a burning device arranged therein. A data collection device collects data detected by the temperature measurement devices and sends the data to a computer, rules of temperature distribution, smoke diffusion speed, smoke descent speed and the like under the action of the mixed ventilation system when a fire occurs inside a building are researched, and a basic theoretical support is provided for the development of a relevant numerical simulation technology. The simulation experiment device and the experiment method for the mixed ventilation system of the metro depot have the beneficial effects that the device is convenient and simple to use, low in cost, and capable of accurately measuring the situation of temperature change in the building; the experiment device is of a totally transparent structure, and an airflow path can be observed and analyzed by means of tracer particles, and is conveniently compared with a numerical simulation result.
Description
Technical field [0001] The invention relates to the research field of the working efficiency of the smoke exhaust system of a subway depot mixed ventilation system used for a covered property in a fire situation, and in particular relates to a simulation experiment device and an experimental method of a subway depot mixed ventilation system. Background technique [0002] In recent years, with the increasing number of subway depots containing superstructures, the ventilation system used in this type of building has also been continuously developed, and a mixed ventilation mode has evolved from the traditional natural ventilation and mechanical ventilation. For large-scale public buildings, we must first ensure their ability to control the smoke layer under fire conditions, the ability to suppress smoke diffusion, and the efficiency of smoke exhaust. The current research on the safety of building ventilation systems is mainly through experimental devices and numerical values. Simul...
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IPC IPC(8): G09B25/00
CPCG09B25/00
Inventor 潘旭海汪志雷郭鑫鑫杨娟华敏蒋军成
Owner NANJING UNIV OF TECH