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Highway tunnel energy-saving ventilation control method based on wind speed

A control method, wind speed and wind direction technology, applied in mine/tunnel ventilation, pump control, earthwork drilling and mining, etc., can solve the problems of easy fluctuation of fans, frequent start and stop, waste of electric energy, etc.

Inactive Publication Date: 2017-10-24
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the traffic volume changes at any time, various indicators in the tunnel vary greatly. Therefore, this control method is prone to fluctuations in the control of the fan, and frequent start and stop, which not only shortens the service life of the fan, but also wastes a lot of electric energy.
Moreover, due to the time delay of the detection data feedback, it may happen that a certain indicator has exceeded the standard and the number of fans is increased, or a certain indicator has been lower than the target value but the number of fans has not been reduced, resulting in waste of electric energy and ventilation. Unsatisfactory effect
[0005] The fixed program method does not consider the changes of various indicators, but pre-programs the operation of the fan according to time and interval. This method cannot adapt to the changes of traffic flow and various indicators, and is mainly used in the ventilation control of municipal highway tunnels

Method used

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  • Highway tunnel energy-saving ventilation control method based on wind speed
  • Highway tunnel energy-saving ventilation control method based on wind speed
  • Highway tunnel energy-saving ventilation control method based on wind speed

Examples

Experimental program
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Effect test

Embodiment 1

[0037] refer to figure 2 and Figure 4 , an energy-saving ventilation control method for highway tunnels based on wind speed, in which multiple groups of jet fans and wind speed and direction sensors are dispersed in the tunnel from front to back. The tunnel ventilation adopts full-jet longitudinal ventilation. The controller controls the start and stop of the jet fan through data processing according to the detection value of the wind speed and direction detector and the historical value:

[0038] 1) at t n At time, the detected wind speed value of the detection point is v n =2.5m / s, n sampling period before t 1 At time, the wind speed value of the detection point is v 1 = 4.0 m / s.

[0039] 2) by figure 2 It can be seen that t n Instantaneous wind speed value v n less than the target wind speed value v 0 =3.0m / s, and the rate of change of wind speed value during the period

[0040] 3) Turn on a group of jet fans before and after the detection point. If the fan ...

Embodiment 2

[0047] refer to image 3 and Figure 4 , an energy-saving ventilation control method for highway tunnels based on wind speed, in which multiple groups of jet fans and wind speed and direction sensors are dispersed in the tunnel from front to back. The tunnel ventilation adopts full-jet longitudinal ventilation. The controller controls the start and stop of the jet fan through data processing according to the detection value of the wind speed and direction detector and the historical value:

[0048] 1) at t n At time, the detected wind speed value of the detection point is v n=3.5m / s, n sampling period before t 1 At time, the wind speed value of the detection point is v 1 = 2.0 m / s.

[0049] 2) by image 3 It can be seen that t n Instantaneous wind speed value v n greater than the target wind speed value v 0 =3.0m / s, and the rate of change of wind speed value during the period

[0050] 3) Close one set of jet fans before and after the detection point. If the fans a...

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Abstract

The invention relates to a highway tunnel energy-saving ventilation control method based on the wind speed. Multiple sets of jet fans and wind speed and wind direction detectors are arranged in a tunnel in sequence from front to back in a distributed mode; the wind speed is detected through the wind speed and wind direction detectors; and the start-stop states of the jet fans in the tunnel are controlled through a data processing and control system according to the detecting result. A control method of the jet fans comprises the steps that a wind speed detecting value, detected by the corresponding wind speed and wind direction detector, of a certain point in the tunnel is collected, and start and stop of the corresponding jet fans are controlled by a controller according to the wind speed detecting value and the change rate calculated by the historical data. The starting number of the jet fans is controlled according to the detected wind speed historical data and the change trend of the speed historical data, the ventilation effect is achieved, meanwhile, the service life of the fans can be prolonged, and energy consumption is reduced.

Description

technical field [0001] The invention relates to the field of road tunnel ventilation, in particular to a wind speed-based energy-saving ventilation control method for road tunnels. Background technique [0002] There are many types of tunnel ventilation methods, which can be roughly divided into natural ventilation and mechanical ventilation according to the air flow in the lane space. Mechanical ventilation is divided into four types: longitudinal ventilation, semi-horizontal ventilation, full-horizontal ventilation and combined ventilation. The longitudinal ventilation is divided into jet ventilation, centralized feeding ventilation, and vertical (inclined) well ventilation. Ventilation methods, vertical (inclined) well exhaust ventilation, electrostatic dust suction ventilation, etc.; semi-horizontal ventilation is divided into air supply semi-horizontal and exhaust semi-horizontal ventilation. [0003] Effective ventilation control is an important measure to realize the...

Claims

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Application Information

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IPC IPC(8): E21F1/00E21F17/18F04D27/00
CPCE21F1/003E21F17/18F04D27/00
Inventor 邹宇晨万萌彭李乔
Owner GUANGDONG UNIV OF TECH
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