Experimental device for gas leakage and diffusion of underground pipe gallery

Abstract

The invention provides an experimental device for gas leakage and diffusion of an underground pipe gallery. The experimental device comprises a gas cabin of the underground pipe gallery, a digital display system, a ventilation system, a gas supply system, and a tail gas treatment device. One end of the top surface of the gas cabin of the underground pipe gallery is connected with the ventilation system, and the bottom side of the end of the gas cabin of the underground pipe gallery is connected with the gas supply system. The digital display system comprises a display, a synchronous controller, and a particle image velocimeter. The particle image velocimeter is arranged outside the cabin body of the gas cabin of the underground pipe gallery. The particle image velocimeter, the ventilationsystem and the gas supply system are respectively connected with the synchronous controller. The experimental device of the invention can be used for researching and analyzing the dynamic change ruleof the gas leakage and diffusion flow field of the gas cabin of the underground pipe gallery, and has important application value on the safety and control for the gas leakage accident of the underground pipe gallery.

Description

technical field [0001] The invention belongs to the field of urban public safety, and in particular relates to an experimental device for gas leakage and diffusion in a comprehensive utility gallery. Background technique [0002] The urban underground comprehensive pipe gallery is an important infrastructure to ensure the city's energy supply and stable operation of the city. It integrates various engineering pipelines such as electricity, communications, gas, heating, water supply and drainage, etc. Excavation, improving the appearance of the city and ensuring the safety of the city all play an important role. With the continuous acceleration of my country's urbanization process and the increasing demand for public facilities, urban underground comprehensive utility corridors, as a way to solve the layout of various urban pipelines and facilities, have received more and more attention in my country. However, since the integrated pipe gallery centrally arranges various haza...

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Problems solved by technology

[0003] At present, there are few experiments on the leakage and diffusion of dangerous gases in the gas cabin of the integrated pipeline gallery, and there is also a lack of a corresponding well-designed experimental system, which has caused serious problems for the research on the dynamic change law of the gas leakage and diffusion flow field in the gas cabin of the integrated pipeline gallery. In order to facilitate the research on the dynamic change law of gas leakage and diffusion in the gas cabin of the comprehensive pipeline gallery and the corresponding prevention and control measures, and to make up for the shortcomings of the current experimental model system and experimental research, a gas leakage and diffusion experiment in the gas cabin of the comprehensive pipeline gallery is designed. The device is used to conduct relevant research on the gas leakage and diffusion in the gas cabin of the comprehensive utility gallery, and provides important technical support for the safety prevention and control of gas leakage accidents in the comprehensive utility gallery, emergency decision-making, etc., and has important research value and application value

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