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Road tunnel ventilation testing device

A test device and tunnel ventilation technology, which is applied in mine/tunnel ventilation, mining equipment, earth-moving drilling, etc., can solve the problems of deterioration of tunnel ventilation, poor space ventilation, and fast vehicle speed, and achieve accurate and reliable test results. The test is simple and convenient, and the test period is short.

Inactive Publication Date: 2009-11-25
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As highway tunnels are long and narrow passages with a large slenderness ratio, the space is relatively closed and the ventilation conditions are poor. The main harmful components in the exhaust gas of automobiles, such as nitrogen oxides, carbon monoxide, acrolein and oil fume, are easy to accumulate, resulting in ventilation conditions in the tunnel. In addition, the traffic density in the highway tunnel is high and the speed is fast. Once a fire occurs, it is easy to cause major personnel accidents and property losses, and even endanger the safety of the tunnel structure.

Method used

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Embodiment Construction

[0016] according to figure 1 , figure 2 , the highway tunnel ventilation test device of the present invention consists of a set of tracer gas inlet device, the first and second plexiglass tunnel models 1,2, the first and second axial fans 3,4, the first and second wind speed Instruments 5,6, first and second CO detectors 7,8, first and second baffles 9,10 and so on.

[0017] The first and second plexiglass tunnels 1 and 2 are customized by Wuhan Liansheng Plexiglass Co., Ltd., with a wall thickness of 1.5cm and a length of 1m for each section. The sections are bonded with strong glue and sealed with tape.

[0018] The first and second axial flow fans 3 and 4 are LDT axial flow fans produced by Wuhan Xingyi Fan Electric Co., Ltd., and their main parameters are:

[0019]

machine number

Rotating speed

/ r / min

motor

/ Kw-P

flow

/ m 3 / h

Full pressure

/ Pa

the noise

/ db(A)

blade angle

...

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Abstract

The invention discloses a road tunnel ventilation testing device comprising a tracer gas inlet device, an organic glass tunnel, an axial flow fan, a wind velocity indicator, a CO detecting instrument and a baffle plate, and is characterized in that the organic glass tunnel comprises two adjacent tunnels and is made of organic glass in segments, the axial flow fan is a ventilating device, the flow fan is connected with the organic glass tunnels, the wind velocity indicator is a wind velocity measuring instrument, the wind velocity indicator is positioned at the air outlet mouth of the organic glass tunnel, the CO detecting instrument is a tracer gas measuring instrument, the CO detecting instrument is positioned at the air outlet mouth of the organic glass tunnel, the baffle plate is positioned between the air inlet end and the air outlet end of the organic glass tunnel, and the tracer gas inlet device is connected with the first organic glass tunnel. The testing device in the invention has the advantages of low cost, good ventilation, simple structure, convenient and easy test, stable and reliable testing result, and the like.

Description

technical field [0001] The invention relates to a ventilation test device, in particular to a road tunnel ventilation test device, which is suitable for the simulation of ventilation mixed wind in tunnels adjacent to the road, the simulation of the distribution of pollutants in the ventilation of road tunnels, the fire simulation of road tunnels, and the like. Background technique [0002] In recent years, with the increase in investment in infrastructure such as road transportation in our country, a number of long road tunnels have emerged as the times require. As highway tunnels are long and narrow passages with a large slenderness ratio, the space is relatively closed and the ventilation conditions are poor. The main harmful components in the exhaust gas of automobiles, such as nitrogen oxides, carbon monoxide, acrolein and oil fume, are easy to accumulate, resulting in ventilation conditions in the tunnel. In addition, the traffic density in the highway tunnel is high an...

Claims

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Application Information

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IPC IPC(8): E21F1/02
Inventor 戴永浩陈卫忠
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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