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A mixed-flow wind-catching and exhausting system and method

A mixed flow and fan technology, applied in wind power generation, earthwork drilling, ventilation of mines/tunnels, etc., can solve the problems of substandard air sanitation, poor air quality, and low working effect of jet fans

Active Publication Date: 2022-05-17
CCCC ROAD & BRIDGE CONSULTANTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the working effect of the jet fan in the spiral tunnel is lower than that of the straight tunnel, and the conventional jet fan in the spiral tunnel will show the tendency of the airflow to flow along the outside of the spiral
If the wind speed distribution produces large inhomogeneity, this will have certain adverse consequences, and because the fan will form an island effect after working for the same position for a long time, resulting in good air around the fan, but the air quality in the outer edge of the island is still very poor. Poor air sanitation conditions in the tunnel are not up to standard, leading to CO poisoning accidents

Method used

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  • A mixed-flow wind-catching and exhausting system and method
  • A mixed-flow wind-catching and exhausting system and method
  • A mixed-flow wind-catching and exhausting system and method

Examples

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Embodiment 1

[0026] A mixed-flow wind catching and exhausting system, characterized in that it includes two parallel rows of tunnels, the tunnels are connected through compensation air passages, a compensation fan 1 is arranged in the compensation air passage, and an air chamber 2 is connected to each side of the compensation fan , a wind-catching fan 3 is respectively arranged on the outside of the air chamber;

[0027] The wind-catching fan consists of a coaxial double-drive stepper motor 3a1, a traverse rack, a traverse gear, an air collecting tube 3a2, and a flexible wind bag tube. Corresponding to the wind-catching fan, there are A traversing groove, the wind-catching fan is arranged in the groove, and a traversing rack 3a5 is equipped at the bottom of the groove. The double-drive stepping motor has an inner drive shaft 3a3 in the center and a drive shaft 3a3 located on the outer periphery of the inner drive shaft. The outer rotary shaft that rotates along the circumferential directio...

Embodiment 2

[0031] The implementation method of the present invention is a parallel axial flow tunnel fresh air compensation system, which includes two tunnels arranged in parallel, and the tunnels are connected through the compensation air channel, and a compensation fan is arranged in the compensation air channel, and the fan is a two-way fan. An integrated monitoring unit is hoisted in each tunnel,

[0032] Including the following steps:

[0033] S1. Collect fresh air information,

[0034] Each tunnel wind collection module collects the tunnel wind speed N, sulfur dioxide content M, oxygen content Q, dust content E, and dust particle content P larger than ten microns in the air at the time of the tunnel where it is located;

[0035] S2 pollution concentration analysis and comparison,

[0036] ①Assign a value, set the score interval A and the corresponding reference frame B, divide the value range of the reference frame B into the value range A, and divide the wind speed N, sulfur dio...

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Abstract

The invention discloses a mixed-flow wind-catching and counter-discharging system, which comprises two rows of tunnels arranged side by side, the tunnels are connected through a compensation air duct, and a compensation fan is arranged in the compensation air duct, and each side of the compensation fan is connected to an air chamber. There is a wind-catching fan on the outside of the gas chamber; the wind-catching fan consists of a coaxial double-drive stepping motor, a traverse rack, a traverse gear, an air collecting tube, and a flexible wind bag tube. There is a traverse groove on the side wall of each tunnel, and the described wind-catching fan is arranged in the groove, and is equipped with a traverse rack at the bottom of the groove, and the outer ring drive shaft of the double-drive stepping motor Connected with the traversing gear, the inner drive shaft of the double-drive stepping motor is connected with the collecting fan, and the collecting fan is assembled in the air collecting tube, and the described air collecting tube is connected to the corresponding The air chamber can be used to clean the area with high pollution concentration in the tunnel.

Description

technical field [0001] The invention belongs to the technical field of tunnel ventilation control, and in particular relates to a mixed-flow wind-catching and exhausting system and method. Background technique [0002] In recent years, the center of expressway construction is shifting from east to west. The terrain in the western region, especially the plateau region, is roughly high in the west and low in the east, with complex topography and diverse landforms. The spiral tunnel has the characteristics of slowing down the slope of the climbing tunnel and reducing the impact of geological disasters such as landslides and debris flows on the road, and will be very suitable for such areas. Spiral tunnel jet ventilation technology is different from low-altitude linear tunnel jet ventilation technology. [0003] At present, the most widely used ventilation method for tunnel ventilation in China is jet ventilation, which uses the boosting effect of the jet fan to push the jet g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F1/00E21F1/04E21F1/08E21F17/18F04D25/08F04D25/16F04D29/40
CPCE21F1/003E21F1/04E21F1/08E21F17/18F04D25/08F04D25/166F04D29/403Y02E10/72
Inventor 连晓飞黄永杰张先武高峰张斌胡伟锋
Owner CCCC ROAD & BRIDGE CONSULTANTS