CN113047890B - 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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- CN113047890B CN113047890B CN202110289245.0A CN202110289245A CN113047890B CN 113047890 B CN113047890 B CN 113047890B CN 202110289245 A CN202110289245 A CN 202110289245A CN 113047890 B CN113047890 B CN 113047890B
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- 238000005192 partition Methods 0.000 claims abstract description 44
- 239000003570 air Substances 0.000 claims description 140
- 239000012080 ambient air Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009423 ventilation Methods 0.000 description 14
- 239000000779 smoke Substances 0.000 description 8
- 230000002457 bidirectional effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/003—Ventilation of traffic tunnels
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/10—Air doors
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Ventilation (AREA)
Abstract
The invention 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 tunnels are at least two tunnels separated by a partition wall, the fan module is arranged in the partition wall, the tunnel holes on one side of the partition wall are air suction channels of the fan module, and the tunnel holes on the other side of the partition wall are exhaust channels of the fan module. The invention solves the technical problem of poor fresh air replacement effect in the existing tunnel.
Description
Technical Field
The invention 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
Along with the modernization of the traffic system in China, the number of high-level railway highway tunnels penetrating through mountain bodies, low-level railway highway subway tunnels penetrating through large rivers and urban underground spaces and the like is increased, and the space concept and the traffic traveling mode of people about cities and between cities are fundamentally changed. Meanwhile, the ventilation problem of the tunnel and the fire rescue problem in the tunnel become important technical problems of tunnel engineering.
In large-scale tunnels with tunnel sections far larger than vehicle sections, such as highway tunnels with double lanes and above, the piston wind generated by vehicle running is very weak, and jet fans are widely introduced and applied to relay ventilation of tunnels.
Referring to FIG. 1, a jet fan is installed in a tunnel in a ceiling manner, and is conveyed in a relay manner to push air in the tunnel to flow forward.
However, because the jet fans are far apart and the sectional area of the jet fans is far smaller than that of the tunnel, the extracorporeal circulation that the air jet in the positive pressure area of the air outlet of the single jet fan flows back to the negative pressure area of the air suction inlet at the tail of the jet fans is caused, the actual efficiency of the relay conveying of the air flow in the tunnel is greatly reduced, and the fresh air replacement effect in the tunnel is poor, as shown in fig. 2.
Disclosure of Invention
In order to solve the problems, the invention 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 on one side of the partition wall is an air suction channel of the fan module, and the tunnel on the other side of the partition wall is an exhaust channel of the fan module.
Preferably, the partition wall is provided with at least one ventilation channel communicated with two tunnel holes, and one fan module is arranged in one ventilation channel.
Preferably, both ports of the ventilating duct are provided with hollowed-out partition plates.
Preferably, the partition is conical, and the diameter of the conical partition is reduced from outside to inside along the thickness direction of the partition; the conical partition plate is provided with an annular conical hole.
Preferably, an air door is arranged in the ventilating 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 in the air suction channel of the forward fan module and a fire alarm does not occur in 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 is in fire alarm and the air suction channel of the forward fan module is not in fire alarm, the reverse fan module does not work, and the forward fan module works.
Preferably, the fan module comprises a forward fan and a reverse fan, the rotation direction of the forward fan is opposite to that of the reverse fan, the air suction opening of the forward fan is the air outlet of the reverse fan, and the air outlet of the forward fan is the air suction opening of the reverse fan;
when a fire alarm occurs in a tunnel hole in which the air suction opening of the forward fan is positioned and a fire alarm does not occur in a tunnel hole in which the air suction opening of the reverse fan is positioned, the forward fan does not work, and the reverse fan works; when a fire alarm occurs in the tunnel hole where the air suction port of the reverse fan is located and a fire alarm does not occur in the tunnel hole where the air suction port 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 where the fire alarm is not located to exhaust air from the tunnel hole where the fire alarm is located.
Compared with the prior art, the invention has the following technical effects:
1. integrates fresh air system resources
According to the invention, one of the two-way tunnels is set as the air suction channel, and the other tunnel is set as the exhaust channel, so that the two-way tunnels of the four inlets and the outlets 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
According to the invention, the two-way tunnels with four inlets and outlets are integrated into a unified fresh air system, one tunnel is used for air suction, the other tunnel is used for air exhaust, and the air suction and exhaust channels are mutually independent, so that the phenomenon of air flow short circuit of a jet fan main body in the traditional tunnel ventilation system is avoided, and the tunnel ventilation effect is improved;
3. the fire safety level of the tunnel is improved
According to the invention, after a fire alarm occurs in the tunnel and the smoke probe at the air suction port of the fan acquires a fire alarm signal, the reverse tunnel air suction from the fire alarm tunnel is implemented to exhaust the fire alarm tunnel, so that the distance of the fire alarm smoke discharged out of the tunnel is shortened, the diffusion of the fire alarm smoke to the reverse tunnel is blocked, and the fire safety level of the tunnel is improved.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. In the accompanying drawings:
FIG. 1 is a cross-sectional view of a tunnel with a jet blower;
FIG. 2 is a schematic diagram of a jet fan airflow short circuit;
fig. 3 is a schematic structural diagram of a side-suction side-discharge low-wind-speed high-wind-volume tunnel fresh air system provided in a preferred embodiment 1 of the present invention;
FIG. 4 is a schematic view of a set of fan modules according to embodiment 1 of the present invention;
FIG. 5 is a schematic diagram of a side-draught side-exhaust low-wind speed high-wind-volume tunnel fresh air system according to the preferred embodiment 1 of the present invention;
fig. 6 is a horizontal sectional view of a side suction side discharge low wind speed large wind volume tunnel fresh air system capable of switching wind direction when a fire alarm occurs in the tunnel according to the preferred embodiment 2 of the present invention.
Detailed Description
The following will describe in detail a side-draught side-exhaust low-wind-speed large-wind-volume tunnel fresh air system provided by the invention with reference to fig. 3 to 6, and the embodiment is implemented on the premise of the technical scheme of the invention, and a detailed implementation mode and a specific operation process are provided, but the protection scope of the invention is not limited to the following embodiment, and a person skilled in the art can modify and moisten the system without changing the spirit and content of the invention.
Example 1
Referring to fig. 3 to 5, the fresh air system for a side-suction side-discharge low-wind speed and large-wind-volume tunnel provided in this embodiment includes at least one fan module 2, wherein the tunnel 1 is at least two tunnels separated by a partition wall 12, i.e. at least two tunnels are included, and adjacent tunnels are separated by the partition wall 12. The invention does not limit the number of tunnel holes, and is generally a double-hole tunnel at present, wherein the double-hole tunnel is a bidirectional tunnel, namely 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 on the other side of the partition wall 12 is an exhaust duct of the fan module 2, that is, the tunnel hole is an exhaust tunnel hole 13.
In the embodiment, four vehicle flow inlets and outlets of a bidirectional tunnel are utilized, a fan module 2 is arranged in a tunnel system of the bidirectional four inlets and outlets, a tunnel hole on one side is used as an air suction duct, a tunnel hole on the other side is used as an exhaust duct, and a low-wind speed high-wind-volume tunnel fresh air system with side inlet and side exhaust is constructed.
In this embodiment, the number of fan modules 2 is not limited, and in the length direction of the tunnel, there may be one fan module (disposed at a middle position in the length direction of the tunnel), or there may be a plurality of fan modules (disposed at intervals along the length direction of the tunnel), and specifically, several fan modules 2 may be disposed at intervals along the length direction of the tunnel, where the longer the length of the tunnel is, the greater the number of fan modules 2 disposed. Similarly, one (disposed at the middle position in the height direction of the partition wall 12) or a plurality (disposed at intervals along the height direction of the partition wall 12) may be provided in the height direction of the partition wall 12, and a plurality of fan modules 2 may be provided in particular according to the height setting of the partition wall 12, the higher the height of the partition wall 12, the greater the number of fan modules 2 to be provided. In this embodiment, a set of fan modules may be provided, and referring to fig. 4, the set of fan modules includes a plurality of fan modules 2 to further increase the fresh air ventilation amount of the tunnel and reduce the wind speed.
Specifically, at least one ventilation channel 121 communicating with both tunnel holes is formed on the partition wall 12, and one fan module 2 is disposed in one ventilation channel 121. The fan module 2 belongs to the mature prior art, and this embodiment is not particularly limited. The fan module 2 generally includes a fan and a motor for driving the fan to rotate.
The air duct 121 includes an air duct main body, and a large-area air suction port and a large-area air exhaust port which are respectively communicated with the air duct main body and are positioned at two ends of the air duct main body, so that the large air quantity is realized, the low air speed is ensured, and the influence of fresh air flow on the running vehicles in the tunnel caused by crosswind is prevented. And, be equipped with the baffle of fretwork on large tracts of land induced draft port and the large tracts of land port of airing exhaust, through setting up the baffle at air flue 121, make the wind flue crooked 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 outside to 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 ventilating duct 121, the air door 15 and the fan are both positioned between the two partition plates, and when the tunnel needs to be ventilated, the air door 15 is opened; when no fresh air is 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 in the air suction inlet of the fan, pulls the ambient air to enter the tunnel from the two openings of the tunnel hole where the air suction inlet is positioned, namely the air suction tunnel hole 11, and is discharged into the air exhaust tunnel hole 13 after being boosted by the fan module 2, and then is discharged to the atmosphere from the two openings of the air exhaust tunnel hole 13, so that fresh air entering and dirty air discharging in the tunnel are realized.
The side-in side-out low-wind speed large-wind-volume tunnel fresh air system has the advantages that:
1. integrates fresh air system resources
In the embodiment, one tunnel in the two-way tunnels is set as the air suction channel, and the other tunnel is set as the exhaust channel, so that the two-way tunnels of the four inlets and the outlets 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
According to the embodiment, the two-way tunnels with the four inlets and the outlets are integrated into a unified fresh air system, one tunnel is used for sucking air, the other tunnel is used for exhausting air, the air suction and exhaust channels are mutually independent, the phenomenon of air flow short circuit of the jet fan main body in the traditional tunnel ventilation system is avoided, and the tunnel ventilation effect is improved.
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 port of the fan acquires a fire alarm signal, the fresh air module is set to suck air from the reverse tunnel of the fire alarm tunnel to exhaust the air of the fire alarm tunnel, so that the diffusion of the fire alarm smoke to the reverse tunnel is avoided.
As a first embodiment, referring to fig. 6, at least one forward fan module 2 'and at least one reverse fan module 2″ are disposed in the partition wall 12 at intervals, the forward fan module 2' and the reverse fan module 2″ are disposed in different air channels 121 respectively, the air suction channel of the forward fan module 2 'is the air exhaust channel of the reverse fan module 2", and the air exhaust channel of the forward fan module 2' is the air suction channel of the reverse fan module 2″;
when a fire alarm occurs in the air suction channel of the reverse fan module 2″ and no fire alarm occurs in 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 a fire alarm occurs in the air suction channel of the forward fan module 2 'and a fire alarm does not occur in the air suction channel of the reverse fan module 2", 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, where 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 a tunnel hole in which the air suction opening of the forward fan is positioned and a fire alarm does not occur in a tunnel hole in which the air suction opening of the reverse fan is positioned, the forward fan does not work, and the reverse fan works; when a fire alarm occurs in the tunnel hole where the air suction port of the reverse fan is located and a fire alarm does not occur in the tunnel hole where the air suction port 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 the function of forward and reverse rotation, so that the fan can rotate forward and also can rotate reversely. When a fire alarm occurs in the tunnel, the fan module sucks air from the tunnel hole where the fire alarm is not located to exhaust air to the tunnel hole where the fire alarm is located. In this embodiment, the switching between the suction tunnel hole and the exhaust tunnel hole can be completed by switching the steering of the fan motor.
After a fire alarm occurs in the tunnel, the smoke probe at the air suction port of the fan collects a fire alarm signal, and air suction is carried out on the fire alarm tunnel from the reverse tunnel of the fire alarm tunnel, so that the distance of the fire alarm smoke discharged out of the tunnel is shortened, the diffusion of the fire alarm smoke to the reverse tunnel is blocked, and the fire safety level of the tunnel is improved.
Claims (4)
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 by a partition wall, the fan module is arranged in the partition wall, the tunnel on one side of the partition wall is an air suction channel of the fan module, and the tunnel on the other side of the partition wall is an exhaust channel of the fan module;
at least one ventilating duct communicated with the two tunnel holes is formed in the partition wall, and one fan module is arranged in one ventilating duct; the ventilating duct comprises a ventilating duct main body, and a large-area air suction port and a large-area air exhaust port which are respectively communicated with the ventilating duct main body and are positioned at two ends of the ventilating duct main body;
the large-area air suction port and the large-area air exhaust port are provided with hollowed-out partition plates;
the partition plate is conical, and the diameter of the conical partition plate is reduced from outside to inside along the thickness direction of the partition wall; the conical partition plate is provided with an annular conical hole;
an air door is arranged in the ventilating duct;
the fan module on the partition wall generates negative pressure in the air suction opening of the fan module, pulls ambient air to enter the tunnel from the two openings of the air suction channel, is discharged into the exhaust channel after being boosted by the fan module, and is discharged to the atmosphere from the two openings of the exhaust channel, so that fresh air entering the tunnel and dirty air are discharged.
2. The side-draught side-exhaust low-wind-speed large-wind-volume tunnel fresh air system according to claim 1, comprising at least one forward fan module and at least one reverse fan module which are arranged in the partition wall at intervals, wherein the air suction duct of the forward fan module is an air suction duct of the reverse fan module, and the air suction duct of the forward fan module is an air suction duct of the reverse fan module;
when a fire alarm occurs in the air suction channel of the forward fan module and a fire alarm does not occur in 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 is in fire alarm and the air suction channel of the forward fan module is not in fire alarm, the reverse fan module does not work, and the forward fan module works.
3. The side-draught side-exhaust low-wind-speed large-wind-volume tunnel fresh air system according to claim 1, wherein the fan module comprises a forward fan and a reverse fan, the forward fan and the reverse fan are opposite in rotation direction, an air inlet of the forward fan is an air outlet of the reverse fan, and an air outlet of the forward fan is an air inlet of the reverse fan;
when a fire alarm occurs in a tunnel hole in which the air suction opening of the forward fan is positioned and a fire alarm does not occur in a tunnel hole in which the air suction opening of the reverse fan is positioned, the forward fan does not work, and the reverse fan works; when a fire alarm occurs in the tunnel hole where the air suction port of the reverse fan is located and a fire alarm does not occur in the tunnel hole where the air suction port of the forward fan is located, the reverse fan does not work, and the forward fan works.
4. The side-draught side-exhaust low-wind-speed high-wind-volume tunnel fresh air system according to claim 1, wherein the fan module comprises a fan with positive and negative double wind directions, and when a fire alarm occurs in a tunnel, the fan sucks air from a tunnel hole in which the fire alarm is not located to exhaust air to the tunnel hole in which the fire alarm is located.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110045706X | 2021-01-13 | ||
| CN202110045706 | 2021-01-13 |
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| CN113047890A CN113047890A (en) | 2021-06-29 |
| CN113047890B true CN113047890B (en) | 2023-07-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1580493B (en) * | 2004-05-20 | 2010-06-09 | 陆懋成 | Two-hole one-way side-pressure ventilation smoke-discharging method for road tunnel |
| CN102287213A (en) * | 2011-06-29 | 2011-12-21 | 中交第二公路勘察设计研究院有限公司 | Double-hole complementary network ventilation experimental model |
| CN104675424B (en) * | 2015-02-10 | 2017-12-08 | 招商局重庆交通科研设计院有限公司 | A kind of submerged tunnel ventilating system and method for ventilation |
| KR101568349B1 (en) * | 2015-03-31 | 2015-11-12 | 창전이앤시 주식회사 | Device cutting off car entering tunnel during tunnel fire |
| CN104775840A (en) * | 2015-04-10 | 2015-07-15 | 天津大学 | Long and big subway tunnel longitudinal ventilation and smoke discharging system with mutually-standby smoke discharging air passages at two sides |
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