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Mixed flow wind-catching opposite-discharging system and method

A mixed-flow and fan technology, which is applied in wind power generation, earthwork drilling, mine/tunnel ventilation, etc., can solve problems such as low working effect of jet fans, substandard air sanitation conditions, poor air quality, etc., and reduce labor intensity of personnel , Realize the effect of energy-saving operation and effective control

Active Publication Date: 2020-12-08
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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  • Mixed flow wind-catching opposite-discharging system and method
  • Mixed flow wind-catching opposite-discharging system and method
  • Mixed flow wind-catching opposite-discharging system and method

Examples

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Effect test

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 opposite-discharging system. The mixed flow wind-catching opposite-discharging system comprises two columns of tunnels arranged in parallel, the tunnels are communicated with each other through a compensation air duct, a compensation fan is arranged in the compensation air duct, the two sides of the compensation fan are connected with air chambers, and the outer sides of the air chambers are provided with wind-catching fans. The wind-catching fans comprise coaxial dual-drive stepping motors, transverse moving racks, transverse moving gears, wind collecting cylinders and flexible wind bag pipes. Transverse moving grooves are formed in the side walls, corresponding to the wind catching fans, of each tunnel, the wind-catching fans are arranged in the grooves, the transverse moving racks are assembled at the bottoms of the grooves, outer ring driving shafts of the dual-drive stepping motors are connected with the transverse moving gears, inner driving shafts of the dual-drive stepping motors are connected with air collecting fans, the air collecting fans are assembled in the wind collecting cylinders, the wind collecting cylinders areconnected to the corresponding air chambers through the flexible wind bag pipes, and return air draft cleaning can be carried out in a targeted mode for areas with large pollution concentration in thetunnels.

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 Applications(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