CN205477703U - Tunnel ventilation structure - Google Patents

Abstract

The utility model discloses a tunnel ventilation structure, which comprises a drainage ditch and an air outlet channel. The drainage ditch is set at the junction of the inner wall of the tunnel and the ground. There are several air outlet channels arranged at intervals on the inner wall of the tunnel; The air outlet channel is mainly composed of a number of inclined semicircular arc-shaped sheets. The two ends of each semi-circular arc-shaped sheet are respectively fixed on the inner wall of the tunnel above the ground and in the drainage ditch below the ground. Consistent with the ventilation direction; the ventilation structure adopts a semi-horizontal type, which improves the utilization rate of the underground space by combining the drainage ditches in the tunnel with the semicircular ventilation system; and optimizes the layout and structure of the air outlet holes in the air outlet channel , which improves the effect of natural ventilation, reduces the power consumption of the fan, and realizes energy saving and cost reduction.

Description

tunnel ventilation structure

technical field

The utility model belongs to the technical field of tunnel ventilation, in particular to a tunnel ventilation structure.

Background technique

The air state in the tunnel has an important impact on driving safety. The tunnel ventilation system is an important part of the safe operation of the tunnel. The air flow is mainly increased by the wind, so as to control the concentration of harmful gases and achieve the effect of dilution.

The ventilation system in the tunnel is generally divided into natural ventilation and mechanical ventilation. Natural ventilation is to discharge the smoke out of the tunnel by relying on the piston action of the driving vehicle and the combined effect of its residual energy and natural wind without fan equipment. Mechanical ventilation is to use mechanical equipment such as fans to achieve the purpose when natural ventilation does not meet the smoke exhaust requirements. The above-mentioned ventilation systems can be divided into three categories in terms of form, namely vertical, horizontal and semi-horizontal. Among them, the vertical type is to introduce fresh air from one end of the tunnel (or the end of the section), and the smoke is discharged from the other end; the horizontal type is to divide the tunnel into several small sections, and send fresh air from one side of each small section of the tunnel. Dilute the smoke in the tunnel and then discharge it from the other end of the tunnel; the semi-transverse type is between the horizontal type and the vertical type, introducing fresh air from one or both ends of the tunnel, and the smoke passes through the tunnel outside the section. Vent discharge.

Although there are many types of existing ventilation systems, none of them effectively combine the tunnel structure with the ventilation system, which is not conducive to the reduction of fan consumption.

Contents of the invention

In view of this, the purpose of the utility model is to provide a tunnel ventilation structure which can optimize the air inlet channel and reduce the power consumption of the fan.

In order to achieve the above purpose, the utility model provides the following technical solutions: a tunnel ventilation structure, including a drainage ditch and an air outlet channel, the drainage ditch is set at the junction of the inner wall of the tunnel and the ground, and there are several air outlet channels, They are arranged at intervals on the inner wall of the tunnel; each air outlet channel is mainly composed of several inclined semicircular arc-shaped sheets. The inclination direction of the semicircular arc-shaped sheet is consistent with the ventilation direction.

Further, each of the air outlet channels includes six semicircular arc-shaped pieces, and each semicircular arc-shaped piece is evenly spaced.

Further, the water ditch cover plate is also included, and the water ditch cover plate is set above the drainage ditch and connected with the semicircular arc-shaped piece.

Further, half of the air outlet channel is located in the drainage ditch, and the other half is located above the drainage ditch.

Further, each semicircular arc-shaped sheet is also provided with an inclined surface, and the inclined direction of the inclined surface is consistent with the ventilation direction.

The beneficial effect of the utility model is that: the ventilation structure adopts a semi-horizontal type, and the utilization rate of the underground space is improved by combining the drainage ditches in the tunnel with the semicircular ventilation system; The optimization of the structure improves the effect of natural ventilation, reduces the power consumption of the fan, and realizes energy saving and cost reduction.

Description of drawings

In order to make the purpose, technical solutions and beneficial effects of the utility model clearer, the utility model provides the following drawings for illustration:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the front view of Fig. 1;

FIG. 3 is an enlarged view of part A of FIG. 1 .

detailed description

The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

As shown in the figure, the tunnel ventilation structure in the utility model includes a drainage ditch 1 and an air outlet channel 2. The drainage ditch 1 is set at the junction of the tunnel inner wall 3 and the ground 4. The air outlet channel 2 has several , arranged at intervals on the tunnel inner wall 3; each air outlet channel 2 is mainly composed of several semicircular arc-shaped sheets 21 arranged obliquely, and the two ends of each semi-circular arc-shaped sheet 21 are respectively fixed on the tunnel inner wall 3 above the ground 4 and ground 4 In the drainage ditch 1 below, the inclination direction of each of the semicircular arc-shaped pieces 21 is consistent with the ventilation direction.

Specifically, the air outlet channel 2 includes two parts above the ground and underground, wherein the underground half (ie, the downwind channel 22) is located in the drainage ditch 1, and the upper half (ie, the upwind channel 23) is located above the drainage ditch 1 as an air outlet. The semicircular arc-shaped sheet 21 has a certain inclination angle during installation, which can effectively improve the ventilation effect.

In this embodiment, each air outlet channel 2 includes six semi-arc-shaped slices 21 and the semi-arc-shaped slices 21 are evenly spaced, so that the air can be evenly distributed, thus ensuring the ventilation effect.

As a further improvement of the above solution, a gutter cover 5 is also included. The gutter cover 5 is covered above the drainage ditch 1 and connected with the semicircular arc piece 21, which can effectively prevent debris from entering the drainage ditch 1.

As a further improvement of the above solution, each semicircular arc-shaped piece 21 is also provided with an inclined surface, and the inclined direction of the inclined surface is consistent with the ventilation direction, which can effectively improve the ventilation effect.

Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that it can be described in the form Various changes can be made in the above and in the details without departing from the scope defined by the claims of the present invention.

Claims (5)

1. A tunnel ventilation structure, comprising a drainage ditch and an air outlet channel, the drainage ditch is set at the junction of the inner wall of the tunnel and the ground, and it is characterized in that: there are several air outlet channels, which are arranged at intervals on the inner wall of the tunnel; Each air outlet channel is mainly composed of several semicircular arc-shaped sheets which are arranged obliquely. The direction is consistent with the ventilation direction. 2 . The tunnel ventilation structure according to claim 1 , wherein each of the air outlet channels includes six semicircular arc-shaped pieces, and the semicircular arc-shaped pieces are evenly spaced. 3. The tunnel ventilation structure according to claim 2, characterized in that it further comprises a water ditch cover plate, the water ditch cover plate is set above the drainage ditch and connected with the semicircular arc piece. 4. The tunnel ventilation structure according to claim 3, characterized in that: half of the air outlet channel is located in the drainage ditch, and the other half is located above the drainage ditch. 5. The tunnel ventilation structure according to any one of claims 1-4, characterized in that: each semicircular arc-shaped piece is further provided with an inclined surface, and the inclined direction of the inclined surface is consistent with the ventilation direction.