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Unpowered ventilation device and tunnel

A technology for power ventilation and ventilation pipes, which is applied in the direction of pump devices, mine/tunnel ventilation, engines, etc. It can solve problems such as weak ventilation capacity, high power consumption, and inability to meet the ventilation requirements of the tunnel body, and achieve stable fan direction , The effect of gas flow stability

Pending Publication Date: 2019-04-16
GUANGZHOU ENG CO LTD OF CHINA RAILWAY 19TH BUREAU GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The air retention in the tunnel body will seriously affect the air quality in the inner cavity of the tunnel body, which is unfavorable to the health of passers-by, especially for some narrow and long tunnel bodies, the deeper the inner cavity of the tunnel body is, the more air in the inner cavity of the tunnel body will be. less gas exchange between the air and the atmosphere outside the tunnel body, resulting in poorer air quality in the inner cavity of the tunnel body
[0003] In order to solve the above problems, various ventilation devices have been proposed in the prior art. However, most of the existing ventilation devices rely on external electric power to drive fans to ventilate the tunnel body. The cost of traffic operation is poor, and the economy is poor; there are also some ventilation devices without external drive, and their ventilation capacity is very weak, which cannot meet the ventilation requirements of the tunnel body

Method used

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  • Unpowered ventilation device and tunnel
  • Unpowered ventilation device and tunnel
  • Unpowered ventilation device and tunnel

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Experimental program
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Effect test

Embodiment 1

[0043] Please refer to Figure 1 to Figure 4 The tunnel provided by this embodiment includes a tunnel body and the aforementioned unpowered ventilation device, the ventilation duct 1 is arranged along the extension direction of the tunnel body, the first tuyere 101 is located outside the tunnel body, and the second tuyere 102 is located in the inner cavity of the tunnel body, The vortex impeller 202 is located in the inner cavity of the tunnel body, and the rotation axis of the vortex impeller 202 is perpendicular to the extending direction of the tunnel body.

[0044]Because the tunnel body 6 is generally a long and narrow space, the closer to the exit of the tunnel body 6 in the long and narrow space of the tunnel body 6, the more the gas exchanges with the gas outside the tunnel body 6, and the farther away the gas at the position of the tunnel body 6 exit is. The less the exchange with the gas outside the tunnel body 6; the worse the gas quality is at the position farther ...

Embodiment 2

[0050] The tunnel provided by this embodiment includes a tunnel body and at least two sets of the aforementioned non-powered ventilation devices. Each ventilation duct 1 is arranged along the extension direction of the tunnel body. External environment; each vortex impeller 202 is located in the inner cavity of the tunnel main body, and the rotation axis of each vortex impeller 202 is perpendicular to the extension direction of the tunnel main body; in some non-powered ventilation devices, the rotating fan 201 is from the outside of the tunnel main body to the inside of the tunnel main body The direction of the cavity; in another part of the non-powered ventilation device, the rotating fan 201 fans the direction from the inner cavity of the tunnel body to the outside of the tunnel body. Due to the adoption of the aforementioned unpowered ventilation device, the vortex impeller 202 is used to rotate with the airflow outside the ventilation duct 1, so that even if the airflow dir...

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Abstract

The invention relates to the technical field of ventilation of mines or tunnels, and provides an unpowered ventilation device and tunnel, which comprise a ventilation duct and a blower assembly, wherein a first air inlet and a second air inlet are arranged on the ventilation duct; the blower assembly comprises a rotary fan and a vortex impeller, the rotary fan is arranged in an inner cavity of theventilation duct, a fan direction of the rotary fan is in an extending direction of the ventilation duct, the vortex impeller is arranged outside the ventilation duct, and the rotary fan is in transmission connection with the vortex impeller; and the vortex impeller is driven by air flow of the ventilation duct to rotate unidirectionally, and the rotary fan is driven by the vortex impeller to rotate unidirectionally. The vortex impeller rotates along with the air flow outside the ventilation duct, so that the fan direction of the rotary fan is guaranteed to be stable, and an air flow direction in the ventilation duct is guaranteed to be stable; in addition, the blower assembly can transfer kinetic energy of the air flow in different directions outside the ventilation duct to the rotary fan, so that the efficiency of the blower assembly is improved and the ventilation efficiency in the ventilation duct is improved.

Description

technical field [0001] The invention relates to the technical field of ventilation in mines or tunnels, in particular to a non-powered ventilation device and a tunnel. Background technique [0002] The air retention in the tunnel body will seriously affect the air quality in the inner cavity of the tunnel body, which is unfavorable to the health of passers-by, especially for some narrow and long tunnel bodies, the deeper the inner cavity of the tunnel body is, the more air in the inner cavity of the tunnel body will be. The less gas exchange there is between the air and the atmosphere outside the tunnel body, resulting in poorer air quality in the inner cavity of the tunnel body. [0003] In order to solve the above problems, various ventilation devices have been proposed in the prior art. However, most of the existing ventilation devices rely on external electric power to drive fans to ventilate the tunnel body. The cost of transportation operation is poor, and the economy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F1/08F04D25/04F04D25/16F03D9/28
CPCE21F1/08F03D9/28F04D25/045F04D25/166Y02E10/72
Inventor 蔡天成夏时光
Owner GUANGZHOU ENG CO LTD OF CHINA RAILWAY 19TH BUREAU GRP
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