Fire simulation experiment platform for tunnel

Abstract

The invention discloses a fire simulation experiment platform for a tunnel, which comprises a platform main body, a smoke control system, a fire source simulation system and a matched measurement and control system, wherein the platform main body can move horizontally, and at least two of the front surface, the upper surface and the back surface of the platform main body are made of fire-proof transparent materials; the smoke control system can simulate longitudinal wind in the tunnel; the fire source simulation system comprises a porous gas burner capable of controlling fuel flow rate; and the matched measurement and control system comprises a gas component measuring system and a smoke temperature measuring system, wherein the gas component measuring system is used for measuring gas components of burning products, and the smoke temperature measuring system is used for measuring the temperature in the tunnel. In the invention, the fire simulation experiment platform for the tunnel enables the inside of a simulated tunnel to have good visibility, can be used for conveniently and effectively observing the conditions in the tunnel and optically measuring the characteristics of the flow field through laser sheets, and can also realize the purpose of controlling the power of the fire source according to research needs.

Description

technical field [0001] The invention relates to the technical field of fire safety, in particular to an experiment and research equipment for simulating fire conditions in actual tunnels. Background technique [0002] In modern scientific research on tunnel fire, it is of great significance to ensure the efficient and safe operation of tunnels by using simulation experiments to study the smoke flow laws and ventilation strategies under fire conditions in tunnels to guide the design of ventilation and smoke exhaust modes. . However, due to the particularity of the tunnel structure and its huge aspect ratio, it is difficult to build a full-scale or large-scale test platform. Therefore, small-scale simulation test research is particularly important and widely used in research methods for tunnel fires. [0003] However, the reduced-scale tunnel fire simulation experiment platform in the current research has the following important defects: [0004] (1) Partially set glass win...

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Problems solved by technology

In this way, the experimental process is cumbersome, which will affect the efficiency of the experiment, and it is impossible to continuously adjust the power of the fire source

[0006] (3) Limited size

A bench of this size will struggle to meet some key similarity criteria (such as the Re number)

Moreover, it is impossible to study the spread behavior and characteristics of the smoke layer in the area far from the fire source. Due to the small cross-sectional area, the boundary layer effect will have an important negative impact on the parameter distribution of the smoke layer in the vertical direction.

[0007] (4) The adjustment and redistribution of the air volume is mainly realized through a simple adjustment plate with a fan-shaped air outlet and a rotating handle. In this way, the accuracy of the air volume and speed is too low, and it is difficult to realize the effective distribution of the air volume and velocity field in the experiment. control, thereby affecting the accuracy and effectiveness of the experiment

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