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A tunnel energy-saving ventilation method based on fan air volume and power

A technology of fan air volume and ventilation method, which is applied in mine/tunnel ventilation, earthwork drilling, mechanical equipment, etc., and can solve problems such as lack of theoretical knowledge of on-site personnel, increased fan input costs, and inability to adjust fan frequency, etc.

Active Publication Date: 2021-09-14
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the design of the current tunnel ventilation scheme, the capacity of the fan is selected according to the air supply requirements in the most difficult period of ventilation, and the power of the fan generally selected is relatively large, resulting in an increase in the input cost of the fan; secondly, during the tunnel construction process , Fans generally operate at a relatively high frequency, and the on-site personnel lack the necessary theoretical knowledge. a lot of energy wasted

Method used

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  • A tunnel energy-saving ventilation method based on fan air volume and power
  • A tunnel energy-saving ventilation method based on fan air volume and power
  • A tunnel energy-saving ventilation method based on fan air volume and power

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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] The embodiment of the present invention discloses a tunnel energy-saving ventilation method based on the air volume and power of the fan. In the tunnel, an air duct 2 is erected horizontally along the excavation direction, and the air outlet of the air duct 2 is located at the face of the tunnel; Outside the tunnel, there is a fan 1 at the air inlet of the air duct 2, which is used to supply air to the tunnel, such as figure 1 Shown; It is characterized in that, the method is as follows:

[0018] S1. Calculate the maximum air volume required at 6 places on the face of the tunnel under the operation process, and determine the power of the required fan 1; at the same time, transmit the required maximum air volume to the remote management background 12;

[0019] S2. Measure the wind pressure and air volume at the air outlet of the air du...

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Abstract

The invention discloses a tunnel energy-saving ventilation method based on fan air volume and power. The remote management background compares the actual air volume with the maximum air volume obtained by S1, and compares the concentration of harmful gases in S3 with the set concentration value. If If the detected air volume is greater than the maximum air volume obtained by S1, and the detected concentration of harmful gases is lower than the set concentration value, the fan will supply air according to the maximum air volume; if the detected air volume is greater than the maximum air volume obtained by S1, and at the same time, the detected If the concentration value is fixed, increase the air supply volume of the fan until the detected concentration of harmful gas is less than the set concentration value; Then increase the air supply volume. While ensuring the air quality of the tunnel face, it also reduces the cost of tunnel ventilation.

Description

【Technical field】 [0001] The invention belongs to the technical field of tunnel construction ventilation, and in particular relates to an energy-saving ventilation method for tunnels based on the air volume and power of fans. 【Background technique】 [0002] Tunnel construction ventilation is a key link in the tunnel construction process, and the ventilation effect directly affects the speed of construction progress. In the design of the current tunnel ventilation scheme, the capacity of the fan is selected according to the air supply requirements in the most difficult period of ventilation, and the power of the fan generally selected is relatively large, resulting in an increase in the input cost of the fan; secondly, during the tunnel construction process , Fans generally operate at a relatively high frequency, and the on-site personnel lack the necessary theoretical knowledge. A great waste of energy consumption. 【Content of invention】 [0003] The purpose of the prese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F1/00E21F17/18F04D27/00
CPCE21F1/006E21F17/18F04D27/00F04D27/001
Inventor 王栋吴元金赵希望刘石磊裴真真张文新马国栋赵军喜朱俊峰黎建平邓小知朱建国朱行迁周川川
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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