CN215761754U - Side-suction side-discharge low-wind-speed large-wind-volume tunnel fresh air system - Google Patents
Side-suction side-discharge low-wind-speed large-wind-volume tunnel fresh air system Download PDFInfo
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- CN215761754U CN215761754U CN202120556473.5U CN202120556473U CN215761754U CN 215761754 U CN215761754 U CN 215761754U CN 202120556473 U CN202120556473 U CN 202120556473U CN 215761754 U CN215761754 U CN 215761754U
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Abstract
The utility model relates to a side-suction side-discharge low-wind-speed large-wind-volume tunnel fresh air system which comprises at least one fan module, wherein the tunnel is at least two tunnels separated by a partition wall, the fan module is arranged in the partition wall, the tunnel hole on one side of the partition wall is an air suction channel of the fan module, and the tunnel hole on the other side of the partition wall is an air exhaust channel of the fan module. The utility model solves the technical problem of poor fresh air replacement effect in the existing tunnel.
Description
Technical Field
The utility model relates to the technical field of tunnel ventilation, in particular to a side-suction side-discharge low-wind-speed large-wind-volume tunnel fresh air system.
Background
With the modernization of the traffic system in China, more and more high-level railway and highway tunnels passing through mountains, low-level railway and highway subway tunnels passing through large rivers and urban underground spaces and the like fundamentally change the space concept and traffic traveling mode of people between cities. Meanwhile, the tunnel ventilation problem and the fire rescue problem in the tunnel become important technical problems of tunnel engineering.
In a large-scale tunnel with the tunnel section far larger than that of a vehicle, such as a highway tunnel with two lanes or above, piston wind generated by the running of the vehicle is very weak, and a jet fan is widely introduced and applied to relay ventilation of the tunnel.
Referring to fig. 1, the jet fan is installed in the tunnel in a ceiling manner, and is operated before or after the jet fan is operated, so that the jet fan is conveyed in a relay manner to push the air in the tunnel to flow in the forward direction.
However, as the jet fans are far apart from each other and the sectional area of the jet fans is far smaller than that of the tunnel, the external circulation that air at the positive pressure region at the air outlet of a single jet fan flows back to the negative pressure region at the air suction opening at the tail of the jet fan is caused, the actual efficiency of air flow relay conveying inside the tunnel is greatly reduced, and the effect of replacing fresh air in the tunnel is poor, please refer to fig. 2.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a side-suction side-discharge low-wind-speed large-wind-volume tunnel fresh air system which comprises at least one fan module, wherein the tunnel is at least two tunnels separated by a partition wall, the fan module is arranged in the partition wall, the tunnel hole on one side of the partition wall is a suction duct of the fan module, and the tunnel hole on the other side of the partition wall is an exhaust duct of the fan module.
Preferably, the partition wall is provided with at least one ventilation channel communicated with both of the two tunnel holes, and the fan module is arranged in the ventilation channel.
Preferably, hollow-out partition plates are arranged at two ports of the air duct.
Preferably, the partition is conical, and the diameter of the conical partition becomes smaller from outside to inside along the thickness direction of the partition wall; and the conical clapboard is provided with an annular conical hole.
Preferably, a damper is arranged in the air duct.
Preferably, the air conditioner comprises at least one forward fan module and at least one reverse fan module which are arranged in the partition wall at intervals, wherein an air suction channel of the forward fan module is an air exhaust channel of the reverse fan module, and an air exhaust channel of the forward fan module is an air suction channel of the reverse fan module;
when a fire alarm occurs on the air suction channel of the forward fan module and a fire alarm does not occur on the air suction channel of the reverse fan module, the forward fan module does not work and the reverse fan module works; when the air suction channel of the reverse fan module generates a fire alarm and the air suction channel of the forward fan module does not generate a fire alarm, the reverse fan module does not work, and the forward fan module works.
Preferably, the fan module includes a forward fan and a reverse fan, the forward fan and the reverse fan rotate in opposite directions, the air inlet of the forward fan is an air outlet of the reverse fan, and the air outlet of the forward fan is an air inlet of the reverse fan;
when a fire alarm occurs in the tunnel hole where the air suction opening of the forward fan is located and no fire alarm occurs in the tunnel hole where the air suction opening of the reverse fan is located, the forward fan does not work and the reverse fan works; when a fire alarm occurs in the tunnel hole where the air suction opening of the reverse fan is located and a fire alarm does not occur in the tunnel hole where the air suction opening of the forward fan is located, the reverse fan does not work, and the forward fan works.
Preferably, the fan module comprises a fan with positive and negative double wind directions, and when a fire alarm occurs in the tunnel, the fan sucks air from the tunnel hole in which the fire alarm is absent and exhausts air to the tunnel hole in which the fire alarm is present.
Compared with the prior art, the utility model has the following technical effects:
1. integrates the fresh air system resource
One of the two-way tunnels is set as an air suction duct, and the other tunnel is set as an air exhaust duct, so that the four inlet and outlet two-way tunnels are integrated into a unified fresh air system, and the utilization efficiency of facility equipment resources is improved;
2. the ventilation effect of the tunnel is improved
The utility model integrates the four inlet and outlet bidirectional tunnels into a unified fresh air system, one tunnel sucks air, the other tunnel exhausts air, and air suction and exhaust channels are mutually independent, thereby avoiding the phenomenon of short circuit of the airflow of the main body of the jet fan in the traditional tunnel ventilation system and improving the tunnel ventilation effect;
3. improve the fire safety level of the tunnel
According to the utility model, after a fire alarm occurs in the tunnel and the smoke probe at the air suction inlet of the fan collects a fire alarm signal, reverse tunnel air suction from the fire alarm tunnel is implemented to exhaust air to the fire alarm tunnel, so that the distance of the fire alarm smoke from the fire alarm tunnel is shortened, the fire alarm smoke is blocked from diffusing to the reverse tunnel, and the fire fighting safety level of the tunnel is improved.
Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. In the drawings:
FIG. 1 is a cross-sectional view of a tunnel with a jet fan;
FIG. 2 is a schematic diagram of airflow short circuit of a jet fan;
fig. 3 is a schematic structural diagram of a side-suction side-discharge low-wind-speed large-wind-volume tunnel fresh air system according to preferred embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of a group of fan modules according to preferred embodiment 1 of the present invention;
fig. 5 is an operation diagram of a side-suction side-discharge low-wind-speed large-wind-volume tunnel fresh air system according to preferred embodiment 1 of the present invention;
fig. 6 is a horizontal cross-sectional view of a side-suction side-discharge low-wind-speed large-wind-volume tunnel fresh air system capable of switching wind directions when a fire alarm occurs in a tunnel according to the preferred embodiment 2 of the present invention.
Detailed Description
The following will describe in detail a side-suction side-discharge low-wind-speed large-wind-volume tunnel fresh air system provided by the present invention with reference to fig. 3 to 6, and this embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiment, and those skilled in the art can modify and color the system without changing the spirit and content of the present invention.
Example 1
Referring to fig. 3 to 5, the side-suction side-discharge low-wind-speed large-wind-volume tunnel fresh air system provided in the present embodiment includes at least one fan module 2, the tunnel 1 is at least two tunnels separated by a partition wall 12, that is, at least two tunnel holes, and adjacent tunnel holes are separated by the partition wall 12. The utility model does not limit the number of tunnel holes, at present, the tunnel is generally a double-hole tunnel, the double-hole tunnel is a bidirectional tunnel, that is, each tunnel hole is a unidirectional line, and the lane directions of the two tunnel holes are opposite. The tunnel hole at one side of the partition wall 12 is an air suction channel of the fan module 2, namely the tunnel hole is an air suction tunnel hole 11; the tunnel hole at the other side of the partition wall 12 is an exhaust duct of the fan module 2, i.e., the tunnel hole is an exhaust tunnel hole 13.
In the embodiment, the fresh air system of the low-wind-speed large-wind-volume tunnel with side entry and side exit is constructed by utilizing four traffic flow exit and entrance of a bidirectional tunnel, arranging the fan modules 2 in the tunnel system with the four two-way exit and entrance, and taking the tunnel hole on one side as an air suction duct and the tunnel hole on the other side as an air exhaust duct.
The number of the fan modules 2 is not limited in the embodiment, and in the length direction of the tunnel, the number of the fan modules 2 may be one (arranged in the middle of the length direction of the tunnel) or multiple (arranged at intervals along the length direction of the tunnel), specifically, several fan modules are arranged and can be set according to the length of the tunnel, the longer the length of the tunnel is, the more the number of the fan modules 2 is, and the fan modules 2 are arranged at intervals along the length direction of the tunnel. Similarly, in the height direction of the partition wall 12, one (disposed at the middle position of the height direction of the partition wall 12) or a plurality of (disposed at intervals along the height direction of the partition wall 12) may be disposed, and specifically, several of the plurality of the fan modules 2 may be set according to the height of the partition wall 12, and the higher the height of the partition wall 12 is, the more the number of the fan modules 2 is. In this embodiment, a set of fan modules may be provided, please refer to fig. 4, where the set of fan modules includes a plurality of fan modules 2 to further increase the ventilation volume of the tunnel fresh air and reduce the wind speed.
Specifically, the partition wall 12 is provided with at least one ventilation duct 121 communicated with both of the two tunnel holes, and one fan module 2 is disposed in one ventilation duct 121. The fan module 2 belongs to the mature prior art, and the embodiment is not limited to this specifically. The fan module 2 generally includes a fan and a motor for driving the fan to rotate.
The air duct 121 comprises an air duct main body, and a large-area air suction port and a large-area air exhaust port which are communicated with the air duct main body and are located at two ends of the air duct main body respectively, so that low wind speed is guaranteed while large wind quantity is achieved, and the influence of fresh air flow on cross wind generated by running vehicles in the tunnel is prevented. And, be equipped with the baffle of fretwork on the port of large tracts of land induced draft and the port of large tracts of land air exhaust, through set up the baffle at air duct 121, make the wind channel bending in order to keep apart the photoelectric pollution of opposite tunnel vehicle.
Further, the partition is conical, and the diameter of the conical partition 14 decreases from the outside to the inside along the thickness direction of the partition wall 12; the conical partition 14 is provided with an annular conical hole 141.
An air door 15 is further arranged in the ventilation channel 121, the air door 15 and the fan are both positioned between the two partition plates, and when fresh air needs to be introduced into the tunnel, the air door 15 is opened; when ventilation is not required, the damper 15 is closed.
When the side-in side-out low-wind-speed large-wind-volume tunnel fresh air system provided by the embodiment operates, as shown in fig. 5, the fan module 2 on the partition wall 12 generates negative pressure at the air suction opening for air suction, pulls ambient air from the tunnel hole where the air suction opening is located, namely, two ends of the tunnel hole 11 for air suction to enter the tunnel, and discharges the ambient air into the air exhaust tunnel hole 13 after the ambient air is boosted by the fan module 2, and then discharges the ambient air from the two ends of the air exhaust tunnel hole 13 to the atmosphere, so that fresh air in the tunnel enters and dirty air is discharged.
The side-in side-out low-wind-speed large-wind-volume tunnel fresh air system has the advantages that:
1. integrates the fresh air system resource
In the embodiment, one of the two-way tunnels is set as the air suction duct, and the other tunnel is set as the air exhaust duct, so that the two-way tunnels with the four inlets and the four outlets are integrated into a uniform fresh air system, and the utilization efficiency of facility equipment resources is improved;
2. the ventilation effect of the tunnel is improved
The two-way tunnel integration of four imports and exports is unified new trend system for this embodiment, and a tunnel induced drafts, and another tunnel is aired exhaust, and the passageway of airing exhaust is independent each other, has stopped among the traditional tunnel ventilation system efflux fan main part air current short circuit phenomenon, has improved tunnel ventilation effect.
Example 2
The embodiment provides a side-in side-out low-wind-speed large-wind-volume tunnel fresh air system, which is provided with a forward and reverse fan module as shown in fig. 6; if a fire alarm occurs in the tunnel, after the smoke probe at the air suction inlet of the fan collects a fire alarm signal, the fresh air module is set to be air-sucked from the reverse tunnel of the fire alarm tunnel to exhaust air of the fire alarm tunnel, and the diffusion of the smoke of the fire alarm to the reverse tunnel is avoided.
As a first embodiment, please refer to fig. 6, at least one forward fan module 2 'and at least one backward fan module 2 "are arranged in the partition wall 12 at intervals, the forward fan module 2' and the backward fan module 2" have opposite fan rotation directions and are respectively arranged in different air ducts 121, the air suction duct of the forward fan module 2 'is an air discharge duct of the backward fan module 2 ", and the air discharge duct of the forward fan module 2' is an air suction duct of the backward fan module 2";
when a fire alarm occurs on the air suction channel of the reverse fan module 2 'and a fire alarm does not occur on the air suction channel of the forward fan module 2', the reverse fan module 2 'does not work, and the forward fan module 2' works; when the air suction channel of the forward fan module 2 'generates a fire alarm and the air suction channel of the reverse fan module 2' does not generate a fire alarm, the forward fan module 2 'does not work, and the reverse fan module 2' works.
As a second embodiment, the same fan module includes two independent fan sub-modules, that is, the fan module 2 includes a forward fan and a reverse fan, the forward fan and the reverse fan are disposed in the same air duct 121, but the rotation directions of the two fans are opposite, the air inlet of the forward fan is the air outlet of the reverse fan, and the air outlet of the forward fan is the air inlet of the reverse fan;
when a fire alarm occurs in the tunnel hole where the air suction opening of the forward fan is located and no fire alarm occurs in the tunnel hole where the air suction opening of the reverse fan is located, the forward fan does not work and the reverse fan works; when a fire alarm occurs in the tunnel hole where the air suction opening of the reverse fan is located and a fire alarm does not occur in the tunnel hole where the air suction opening of the forward fan is located, the reverse fan does not work, and the forward fan works.
As a third embodiment, the fan motor in the fan module has a forward and reverse rotation function, so that the fan can rotate forward and reverse. When a fire alarm occurs in the tunnel, the fan module sucks air from the tunnel hole in which the fire alarm is absent and exhausts air to the tunnel hole in which the fire alarm is present. The embodiment can complete the exchange of the air suction tunnel hole and the air exhaust tunnel hole only by switching the rotation direction of the fan motor.
The fire alarm takes place in the tunnel, and after the fire alarm signal was gathered to fan inlet scoop smoke probe, the reverse tunnel of implementing from the fire alarm tunnel induced drafts and airs exhaust to the fire alarm tunnel, has shortened the distance in fire alarm smog discharge tunnel to block fire alarm smog to reverse tunnel diffusion, improved tunnel fire control safety level.
Claims (8)
1. The side-suction side-discharge low-wind-speed large-wind-volume tunnel fresh air system is characterized by comprising at least one fan module, wherein the tunnel is at least two tunnels separated through a partition wall, the fan module is arranged in the partition wall, the tunnel hole on one side of the partition wall is a suction channel of the fan module, and the tunnel hole on the other side of the partition wall is an exhaust channel of the fan module.
2. The side-draft side-discharge low-wind-speed high-wind-volume tunnel fresh air system as claimed in claim 1, wherein at least one ventilation duct is formed in the partition wall and communicates with both of the tunnel holes, and one of the fan modules is disposed in one of the ventilation ducts.
3. The side-suction side-discharge low-wind-speed large-wind-volume tunnel fresh air system as claimed in claim 2, wherein hollow-out partition plates are arranged at two ports of the air duct.
4. The side-draft side-discharge low-wind-speed high-wind-volume tunnel fresh air system as claimed in claim 3, wherein the partition is conical, and the diameter of the conical partition becomes smaller from outside to inside along the thickness direction of the partition; and the conical clapboard is provided with an annular conical hole.
5. The side-draft side-discharge low-wind-speed high-wind-volume tunnel fresh air system as claimed in claim 2, wherein a damper is provided in the ventilation duct.
6. The side-draft side-discharge low-wind-speed large-wind-volume tunnel fresh air system as claimed in any one of claims 1 to 5, comprising at least one forward fan module and at least one backward fan module which are arranged in the partition wall at intervals, wherein the air suction duct of the forward fan module is the air discharge duct of the backward fan module, and the air discharge duct of the forward fan module is the air suction duct of the backward fan module;
when a fire alarm occurs on the air suction channel of the forward fan module and a fire alarm does not occur on the air suction channel of the reverse fan module, the forward fan module does not work and the reverse fan module works; when the air suction channel of the reverse fan module generates a fire alarm and the air suction channel of the forward fan module does not generate a fire alarm, the reverse fan module does not work, and the forward fan module works.
7. The side-draft side-discharge low-wind-speed large-wind-volume tunnel fresh air system as claimed in any one of claims 1 to 5, wherein the fan module comprises a forward fan and a reverse fan, the forward fan and the reverse fan rotate in opposite directions, the air inlet of the forward fan is the air outlet of the reverse fan, and the air outlet of the forward fan is the air inlet of the reverse fan;
when a fire alarm occurs in the tunnel hole where the air suction opening of the forward fan is located and no fire alarm occurs in the tunnel hole where the air suction opening of the reverse fan is located, the forward fan does not work and the reverse fan works; when a fire alarm occurs in the tunnel hole where the air suction opening of the reverse fan is located and a fire alarm does not occur in the tunnel hole where the air suction opening of the forward fan is located, the reverse fan does not work, and the forward fan works.
8. The side-draft side-discharge low-wind-speed large-wind-volume tunnel fresh air system as claimed in any one of claims 1 to 5, wherein the fan module comprises a fan having both forward and reverse wind directions, and when a fire alarm occurs in the tunnel, the fan sucks air from the tunnel hole in which the fire alarm is absent to discharge air to the tunnel hole in which the fire alarm is present.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120090887 | 2021-01-13 | ||
| CN2021200908873 | 2021-01-13 |
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| Publication Number | Publication Date |
|---|---|
| CN215761754U true CN215761754U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120556473.5U Active CN215761754U (en) | 2021-01-13 | 2021-03-18 | Side-suction side-discharge low-wind-speed large-wind-volume tunnel fresh air system |
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| CN (1) | CN215761754U (en) |
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2021
- 2021-03-18 CN CN202120556473.5U patent/CN215761754U/en active Active
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