CN106050291B - A kind of tunnel ventilation dynamic exhaust method and device - Google Patents
A kind of tunnel ventilation dynamic exhaust method and device Download PDFInfo
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- CN106050291B CN106050291B CN201610591028.6A CN201610591028A CN106050291B CN 106050291 B CN106050291 B CN 106050291B CN 201610591028 A CN201610591028 A CN 201610591028A CN 106050291 B CN106050291 B CN 106050291B
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- 238000009423 ventilation Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000003344 environmental pollutant Substances 0.000 claims description 18
- 231100000719 pollutant Toxicity 0.000 claims description 18
- 238000005265 energy consumption Methods 0.000 abstract description 14
- 239000003570 air Substances 0.000 description 91
- 238000013461 design Methods 0.000 description 7
- 239000010865 sewage Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 238000000205 computational method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000411 inducer Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000013439 planning Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004393 prognosis Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012384 transportation and delivery Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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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- Geology (AREA)
- Ventilation (AREA)
- Environmental & Geological Engineering (AREA)
Abstract
The invention belongs to highway tunnel ventilation field, and disclose a kind of tunnel ventilation dynamic exhaust method and device, it utilizes the dynamic air draft in the existing tunnel of two groups of integrated air exhaust causes for gossip in tunnel, one of which integrated air exhaust mouth is arranged on 100m~200m opening positions apart from tunnel exit, its air draft pattern is that bypass type ventilation shaft discharges formula, 15%~20% opening position that another group of integrated air exhaust mouth is arranged on tunnel exit distance is tunnel total length, its air draft pattern are that confluent type ventilation shaft discharges formula.The present invention can enrich tunnel exhaust way, realize the dynamic regulation of tunnel ventilation, both ensure that air quality in tunnel, and save fan operation energy consumption to greatest extent according to the exhaust way of traffic intelligent selection more low energy consumption.
Description
Technical field
The invention belongs to highway tunnel ventilation field, and in particular to be a kind of side of combined vcehicular tunnel mechanical exhaust
Method and device, more specifically, being to be related to a kind of tunnel ventilation dynamic exhaust method and device.
Background technology
In vcehicular tunnel, continuous emission when running car is in tunnel, cause CO, NOx and particulate matter in tunnel
Significantly raised Deng concentration of harmful substance.At present, it is hole directly discharge and wind tower that waste gas, which discharges the most frequently used method, in vcehicular tunnel
High altitude discharge.Wherein, hole is directly discharged suitable for the shorter urban transportation tunnel of mountain tunnel and length；Wind tower high altitude discharge
It is widely used in urban transportation tunnel, because city tunnel hole is often the environmental sensitive area such as business and residential block, uses
The mode of wind tower high altitude discharge can effectively protect surrounding environment sensitive spot, and overall cost is low, be a kind of simple and reliable air draft
Mode, and the main exhaust way that domestic city tunnel uses at present.
At present for wind tower high altitude discharge mode, air draft is generally determined according to requirements such as urban planning, landscape, environmental impact assessments first
Tower position, air draft Host equipment room is then determined by air draft tower position nearby again, finally determine to concentrate nearby by air draft Host equipment room
Exhaust outlet position, tunnel is divided into by two ventilation sections of entrance and outlet section by integrated air exhaust mouth, exhaust outlet can be located at away from
Tunnel exit is relatively near or opening position farther out.Blowdown mode is concentrated for wind tower, there are two kinds of fortune of wind tower shunt sewage discharge and interflow blowdown
Battalion's pattern, two ways independent operating, shunt sewage discharge mode are applied to the higher normal driving operating mode of road speed, collaborate blowdown
Operating mode is runed suitable for the relatively low retardance of road speed.
However, there are following two drawbacks in the exhaust way of existing two kinds of independent operatings：
1) when exhaust outlet is nearer apart from tunnel exit, when the gas that can cause outlet section only with wind tower interflow blowdown mode
Flow short-circuit, the increase of operation energy consumption is caused, concrete reason is that speed is relatively low in tunnel under retardance operation operating mode, ventilation by trattic masterpiece
Consider for resistance, jet blower secondary ventilation need to be opened, because length at entry is much larger than exit length, therefore collaborate blowdown
When occur air flow shortcircuit, most of waste gas, by wind tower discharge, in order to meet entrance required airflow requirement, need to enter one by outlet
Step increase entrance jet blower opens exhaust air rate in number of units or increase wind tower, thus operating cost can be caused to increase；
2) exhaust outlet away from tunnel exit farther out when, when only with wind tower shunt sewage discharge mode can cause entrance, outlet
The increase of section and wind tower exhaust air rate, causes the increase of operating cost, concrete reason is due to that exit length is longer, in order to meet
The requirement of the ambient air quality of outlet section resh air requirement and tunnel portal, the ventilation for the section that need to increase export, and air draft should be reduced
Pollutant concentration at tower；Due to the reduction of pollutant concentration at wind tower, and the outlet of exhaust outlet distance is farther out, in order to ensure wind
The exhausted air quantity of tower discharge meets requirement, need to increase the exhaust air rate of wind tower, simultaneously because the pollutant concentration of wind tower discharge is relatively low, tunnel
The fresh air of road entrance fails, effectively using just discharge tunnel, to have further resulted in the waste of energy consumption；Further, since outlet section and
Air quantity increases simultaneously in exhaust chimney, therefore entrance air quantity also needs accordingly to increase.
To sum up, when exhaust outlet away from tunnel exit farther out or it is nearer when, collaborate blowdown mode or wind tower only with wind tower and shunt
Blowdown mode carries out tunnel blowdown, is required for increasing wind tower exhaust air rate, increases operation energy consumption and operating cost.Therefore, it is badly in need of setting
A kind of dynamic exhaust method and device suitable for tunnel ventilation is counted, while tunnel air draft needs are met, effectively reduces fortune
Row cost and energy consumption.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of tunnel ventilation dynamic exhaust method
And device, wherein with reference under different traffic operating modes the characteristics of tunnel air draft, the dynamic that respective design is applied to tunnel ventilation is arranged
Wind method and device, it at the two of tunnel by setting two groups of different integrated air exhaust mouths, with according to friendship different in tunnel
Logical operating mode enriches tunnel exhaust way, in fact to save and ensure that air quality enables different exhaust outlets as standard in tunnel
Show the dynamic regulation of tunnel ventilation, both ensure that air quality in tunnel, and save fan operation energy consumption to greatest extent,
With the easy to implement, advantage such as operation cost is low, and can effectively save.
To achieve the above object, according to one aspect of the present invention, it is proposed that a kind of tunnel ventilation dynamic exhaust method,
Offer two groups of integrated air exhaust mouths in tunnel, one of which is shunting exhaust outlet, its be arranged on the 100m apart from tunnel exit~
200m opening positions, the air draft pattern of the shunting exhaust outlet discharge formula for bypass type ventilation shaft；Another group of integrated air exhaust mouth is interflow
Exhaust outlet, 15%~20% opening position that it is arranged on the distance of tunnel exit is tunnel total length, the row of the interflow exhaust outlet
Wind pattern is that confluent type ventilation shaft discharges formula；When the average speed in tunnel is more than or equal to 40km/h, shunting exhaust outlet is opened
Using discharge mode progress air draft is shunted, when the speed in tunnel is less than 40km/h, to open interflow exhaust outlet with using conjunction
Flow discharge mode and carry out air draft.
As it is further preferred that the blowdown flow rate of shunting exhaust outlet is not less than 70%, the blowdown flow rate for collaborating exhaust outlet is
100%.
As it is further preferred that bypass type ventilation shaft discharge formula is specially：Row is used as using tunnel traffic draft power
Wind-power, a pollutant part is discharged from exhaust outlet in tunnel, and a part is discharged from tunnel exit.
As it is further preferred that confluent type ventilation shaft discharge formula is specially：Row is used as using tunnel traffic draft power
Wind resistance, pollutant is discharged from exhaust outlet in tunnel.
It is another aspect of this invention to provide that providing a kind of tunnel ventilation dynamic air exhausting device, the device includes being located at tunnel
Two groups of integrated air exhaust mouths in road, one of which integrated air exhaust mouth are shunting exhaust outlet, and it is arranged on apart from tunnel exit
100m~200m opening positions, the air draft pattern of this group of exhaust outlet discharge formula for bypass type ventilation shaft；Another group of integrated air exhaust mouth be
Collaborate exhaust outlet, 15%~20% opening position that it is arranged on tunnel exit distance is tunnel total length, the row of this group of exhaust outlet
Wind pattern is that confluent type ventilation shaft discharges formula；One end of two groups of integrated air exhaust mouths is connected with tunnel, and the other end passes through contact
Air channel is connected with air draft computer room and exhaust chimney.
As it is further preferred that the shunting exhaust outlet is preferably provided at the 150m opening positions apart from tunnel exit.
As it is further preferred that it is tunnel total length that the interflow exhaust outlet, which is preferably provided at tunnel exit distance,
18% opening position.
As it is further preferred that when the average speed in tunnel is more than or equal to 40km/h, open shunting exhaust outlet with
Air draft is carried out using shunting discharge mode, when the speed in tunnel is less than 40km/h, interflow exhaust outlet is opened and is collaborated with using
Discharge mode carries out air draft.
In general, by the contemplated above technical scheme of the present invention compared with prior art, mainly possess following
Technological merit：
1. the present invention sets two groups of special exhaust outlets by not existed together in tunnel, and is respectively used to wind tower interflow blowdown
With wind tower shunt sewage discharge, and can select to open the exhaust outlet under corresponding operating mode according to tunnel difference operation ventilation operating mode, it is effectively real
The energy-saving run of existing Tunnel Ventilation System, compared to tradition ventilation mode, for its fractional energy savings up to 5%~10%, practicality is stronger.
2. the present invention is obtained the optimal setting positions of two groups of exhaust outlets, set wherein shunting exhaust outlet by research and experiment
Put in 100m~200m opening positions apart from tunnel exit, it is tunnel total length that interflow exhaust outlet, which is arranged on tunnel exit distance,
15%~20% opening position, and obtain the optimal parameter of air draft pattern switching, i.e., alternatively arranged with the average speed in tunnel
The foundation of wind pattern, the optimal air draft in tunnel can be achieved, and energy consumption is minimum.
3. the present invention uses wind tower shunt sewage discharge mode in normally driving operating mode, shunting exhaust outlet is opened, closes interflow
Exhaust outlet, wind tower blowdown flow rate are no less than the 70% of the tunnel total length total amount of pollutant；Using wind tower interflow row during retardance driving operating mode
Dirty mode, shunting exhaust outlet is closed, open interflow exhaust outlet, different exhaust outlets is correspondingly opened according to different ventilation operating modes, can
The dynamic regulation of Tunnel Ventilation System is effectively realized, shaping modes are simple and convenient to operate.
4. the present invention have it is vdiverse in function simple in construction the advantages of, the present invention functionally can not only realize shunt sewage discharge but also
Interflow blowdown can be realized, need to only increase by one group of exhaust outlet compared to traditional removing shaft in structure, under two kinds of air draft patterns
A set of exhaust blower is shared, two groups of exhaust outlets cooperate and coordinated, and realize the Intelligent Dynamic air draft in tunnel.
5. the present invention can select the pattern more saved to be run using artificial intelligence under any traffic, and
And operational mode is modified according to actual filth-discharging effect, the air quality in tunnel has also been ensured while energy-conservation.
6. the present invention interflow exhaust outlet selection on taken into full account energy-conservation target, using pressure at both sides equalization point as
Exhaust outlet mount point, avoid pressure imbalance under typical obstruction operating mode and open the increased power consumption of jet blower.
Brief description of the drawings
Fig. 1 is a kind of structural representation of tunnel ventilation dynamic air exhausting device provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Conflict can is not formed each other to be mutually combined.
The general principle of the present invention is to utilize the dynamic air draft in the existing tunnel of two groups of integrated air exhaust causes for gossip in tunnel, its
In one group be applied to shunting discharge operating mode, another group is applied to interflow discharge operating mode, according to traffic operating mode different in tunnel, closes
Exhaust outlet corresponding to the unlatching of reason, realize wind tower interflow blowdown and the reasonable utilization of two kinds of blowdown modes of shunt sewage discharge, Jin Ershi
The dynamic regulation of existing tunnel ventilation, has easy to adjust, and operation cost is low, the advantages that good energy-conserving effect.
As shown in figure 1, a kind of tunnel ventilation dynamic air exhausting device provided in an embodiment of the present invention, the device are arranged in tunnel
1 inside, for realizing the ventilation in tunnel, the tunnel 1 is provided with tunnel entrance 2 and tunnel exit 3, and direction of traffic enters from tunnel
Mouth extends to tunnel exit, and the air exhausting device includes two groups of integrated air exhaust mouths in tunnel, one of which integrated air exhaust
Mouth is arranged on 100m~200m opening positions apart from tunnel exit 3, is preferably provided at the 150m opening positions apart from tunnel exit 3,
Its air draft pattern for using confluent type ventilation shaft to discharge carries out air draft, and the exhaust outlet is referred to as to shunt exhaust outlet 5.
Specifically, bypass type ventilation shaft discharge formula is specifically using tunnel traffic draft power as air draft power, it is dirty in tunnel
Contaminate a thing part to discharge from exhaust outlet, a part is discharged from tunnel exit, and its blowdown flow rate is not less than 70%.
Wherein, the selection for shunting 5 specific set location of exhaust outlet is determined in the following way：
(1) it is known：Tunnel information, vehicle flowrate, speed
(2) assume：Tunnel portal section is 1 section at exhaust outlet, and exhaust outlet section to tunnel outlet section is 2 sections, and exhaust outlet arrives
Exhaust chimney outlet is 3 sections, sets pollutant concentration sensor respectively at tunnel entrance, exhaust outlet and tunnel exit, measures
Pollutant concentration is respectively c0、c1、c2, entrance and the actual ventilation of outlet section are respectively Q1、Q2。
(3) design calculates：The determination of separation panel tuyere position
(3.1) to ensure hole environmental requirement, usual wind tower blowdown flow rate is not less than 70% of the total amount of pollutant in tunnel, by
Higher in speed in tunnel, Piston Action Wind caused by vehicle traveling is larger, and remaining pollutant is discharged by tunnel portal, then is had：
Exhaust outlet pollutant discharge rate/tunnel entirety pollutant yield >=70%
(3.2) influence of the exhaust outlet position to permanent ventilation of tunnel energy consumption is considered, it is assumed that exhaust outlet is respectively in L1, L '1, and
And there is L '1<L1, pollutant concentration is considered by Tunnel Design concentration at tunnel exit under two kinds of operating modes, and wind tower blowdown flow rate is pressed
70% considers；
It can be obtained by Tunnel Design concentration conditions according to exit pollutant concentration:c2=c '2
Due to L '1<L1, therefore have：Q′2>Q2, c '1≤c1
Two kinds of operating modes are calculated into vertical shaft blowdown flow rate according to a respectively, then had：
As c '1<c1When, abbreviation above formula can obtain：
It can be seen that：L1It is bigger, that is, exhaust blower, closer to tunnel exit, vertical shaft air quantity is smaller, more saves.
As c '1=c1When, abbreviation above formula can obtain：
It can be seen that：L1It is bigger, that is, exhaust outlet, closer to tunnel exit, vertical shaft air quantity is smaller, more saves.Pass through above-mentioned reason
It is can be found that by calculating：In the case of identical wind tower filth-discharging effect, for exhaust outlet closer to tunnel exit, vertical shaft air quantity is smaller,
More save.
Consider in above-mentioned calculating by vehicle flowrate for constant wagon flow, because wagon flow constantly changes in actual conditions,
Outlet section do not have car by when, short circuit occurs in tunnel exit air-flow, from wind tower discharge, therefore, exhaust outlet should not be arranged on tunnel
Road is exported, and the installation site for drawing shunting exhaust outlet according to the engineering experience of reality is arranged on away from tunnel exit 100m-200m
Exhaust effect is optimal.
Another group of integrated air exhaust mouth is arranged on 15%~20% that the distance between tunnel exit 3 is the total length of tunnel 1
Place is put, is preferably provided at 18% opening position that the distance between tunnel exit 3 is tunnel total length, it uses confluent type ventilation shaft
Air draft pattern discharges air draft, and the exhaust outlet is referred to as to collaborate exhaust outlet 6.
Specifically, confluent type ventilation shaft air-exhaust type, using tunnel traffic draft power as exhaust resistance, pollutant is equal in tunnel
Discharged from exhaust outlet, its blowdown flow rate is 100%.
Wherein, the selection for collaborating 6 specific set location of exhaust outlet is determined in the following way：
(1) it is known：Tunnel information, vehicle flowrate, speed
(2) assume：Tunnel portal section is 1 section at exhaust outlet, and exhaust outlet section to tunnel outlet section is 2 sections, and exhaust outlet arrives
Exhaust chimney outlet is 3 sections
(3) design calculates：Collaborate the determination of exhaust outlet position
Position due to collaborating exhaust outlet can influence the pressure distribution and exhaust outlet flow of air port both sides, and letter is led according to mathematics
Several property be known that when collaborate exhaust outlet be placed in can make pressure at both sides balance position when, the actual ventilation of both sides with
It is equal to design required airflow, now exhaust outlet air quantity is minimum, is the design required airflow of tunnel total length, and ventilating system energy consumption is minimum, should
Air port is optimal location.
(3.1) when not considering jet blower in tunnel, the total head computational methods behind ventilation bottom interflow are：
Total head=gravity-flow ventilation power+tunnel traffic draft power-tunnel ventilation resistance；
P=Δs pg1+Δpt1-Δpr1=Δ pg2+Δpt2-Δpr2；
(3.2) gravity-flow ventilation power Δ pg1With Δ pg2Computational methods be：
In formula：ρ is atmospheric density；ζeFor tunnel portal and the coefficient of partial resistance of outlet；λrIt is tunnel along resistance coefficient；
L1And L2Tunnel length respectively at left and right sides of blower fan；DrFor tunnel cross-section equivalent diameter, Dr=4Ar/Cr；ArBreak for tunnel clearance
Area；CrFor tunnel cross-section girth；vnDesirable 2-3m/s；For known tunnel, natural wind resistance and L1And L2It is relevant.
(3.3) tunnel traffic draft power Δ pt1With Δ pt2Computational methods be：
In formula：AmFor automobile equiva lent impedance area；v1And v2Ventilation wind speed respectively at left and right sides of tunnel；n+1Enter for tunnel
In mouthful section and v1Vehicle number in the same direction, n+1=NL1/3600/vt；vtFor each operating mode speed；N is tunnel hourly traffic volume；n-2For
Interior and v on the left of tunnel2Reverse vehicle number, n-2=NL2/3600/vt；It is fixed in speed and vehicle flowrate for known tunnel
In the case of, traffic ventilation force and v1And v2Relevant, in order that exhaust outlet air quantity is minimum, inducer and outlet section ventilation are equal to
Required airflow is designed, and required airflow is relevant with road gradient in highway tunnel, length, the volume of traffic, speed, geographical position etc., in road gradient in highway tunnel, traffic
In the case of known to amount, speed etc., required airflow is only relevant with length, therefore v1And v2It is only relevant with length, and then traffic ventilation force
Only with length L1And L2It is relevant.
(3.4) tunnel ventilation resistance Δ pr1With Δ pr2Computational methods be：
In formula：WithThe loss coefficient of the left and right sides respectively on the basis of wind speed in ventilation shaft；v3It is logical
Section mean wind speed in ventilating shaft；According to v1And v2And air quantity conserva-tion principle, v can be extrapolated3, then flowing resistance only and L1
And L2It is relevant.
(3.5) formula in (3.2), (3.3), (3.4) is substituted into (3.1) equation, by abbreviation, L can be obtained1With
L2A linear equation in two unknowns, and then L can be obtained1And L2Relativeness, obtain the position of optimal exhaust outlet.
(4) result of calculation：In the case of known to tunnel vehicle flowrate and speed, the optimal location for collaborating exhaust outlet can root
Upper result of calculation obtains according to this.According to tunnel prognosis traffic volume and road speed, the air draft under every kind of different operating modes is calculated
Mouth position,, can be true from the point of view of the operation of round-the-clock energy saving of system with reference to the time-sharing ratio example under different road speeds
Surely the optimal installation site of exhaust outlet is collaborated.It is of the invention by optimal exhaust outlet according to the results of calculation of multiple typical projects
It is arranged on and is equal to the distance at tunnel exit in the range of the 15%-20% of tunnel total length.
Further, the one end for shunting exhaust outlet 5 and interflow exhaust outlet 6 is connected with tunnel 1, will by exhaust outlet with this
In tunnel exhaust emission suction dynamic air exhausting device in, shunting exhaust outlet 5 and interflow exhaust outlet 6 the other end with contact
Air channel 7 is connected, and the contact air channel 7 is connected with air draft computer room 4, exhaust chimney 8 is provided with the air draft computer room 4, thus through exhaust outlet
Waste gas into air exhausting device enters in air draft computer room 4 through getting in touch with air channel 7, then discharges tunnel through exhaust chimney 8.
Specifically, contact air channel 7 is used to normal driving exhaust outlet 5 and obstruction driving exhaust outlet 6 being integrated in air draft computer room 4
On, two groups of exhaust outlets only need a set of air draft computer room, reduce installation cost, simplify apparatus structure.
The present invention can carry out energy-conservation judgement, intelligent selection air draft pattern is closed with opening for any one traffic operating mode
Suitable exhaust outlet, the energy-saving run of realization device, wherein the following logic of the process Main Basiss run is carried out：According to shunting and close
The position of exhaust outlet under stream mode, exhaust chimney air quantity and blower fan resistance are determined, and carry out energy-conservation judgement, selection is using shunting discharge
Or interflow discharge mode carries out air draft, it is determined that the open position of specific exhaust outlet.Specifically, after air exhausting device installation, it is shunted
The position of exhaust outlet and interflow exhaust outlet is fixed, determines that shunting hinders with exhaust chimney air quantity under the pattern of interflow and blower fan according to the position
Power, calculate ventilating system energy consumption under both of which, air draft pattern of the less pattern of energy consumption as system.
According to the correlation computations of multiple engineerings and by verifying repeatedly, it is found that air draft pattern is mainly relevant with speed, work as car
(normally referred to as normal driving operating mode) uses shunting discharge mode to carry out air draft and more saved when speed is more than or equal to 40km/h, when
(normally referred to as blocking operating mode) is more saved using interflow discharge mode progress air draft when speed is less than 40km/h, therefore this hair
The bright road speed according in tunnel can intelligence selection air draft pattern, open corresponding exhaust outlet.
The concrete operations mode of the tunnel ventilation dynamic air exhausting device of the present invention is described in detail below.
For a specific tunnel, first, determine that the ventilating opening of optimal shunting discharge and interflow discharge mode is set
Position, to shunting discharge mode and the air draft fan delivery, total head and the ventilating system operation energy consumption that collaborate discharge mode both of which
Calculated, the minimum pattern of operation energy consumption is the air draft pattern that system uses, and then determines to open shunting exhaust outlet or unlatching
Collaborate exhaust outlet.During practical operation, suitable exhaust outlet is determined according to the average speed in tunnel, when the average speed in tunnel
During more than or equal to 40km/h, shunting exhaust outlet is opened to carry out air draft using shunting discharge mode, when the speed in tunnel is less than
During 40km/h, interflow exhaust outlet is opened to carry out air draft using interflow discharge mode.
The present invention realizes the dynamic air draft of vcehicular tunnel operation ventilation, can be opened according to the different operation operating modes in tunnel are corresponding
Corresponding exhaust outlet, normally during driving operating mode, interflow exhaust outlet is closed, opens and shunts exhaust outlet, when blocking driving operating mode, closed
Exhaust outlet is shunted, opens interflow exhaust outlet, more more energy efficient than tradition ventilation mode under same Management plan, fractional energy savings is reachable
5%~10%.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included
Within protection scope of the present invention.
Claims (6)
1. a kind of tunnel ventilation dynamic exhaust method, it is characterised in that two groups of integrated air exhaust mouths are offered in tunnel, wherein one
Group is shunting exhaust outlet, and it is arranged on 100m~200m opening positions apart from tunnel exit, the air draft pattern of the shunting exhaust outlet
Formula is discharged for bypass type ventilation shaft, it is using tunnel traffic draft power as air draft power, and a pollutant part is from air draft in tunnel
Mouth discharge, a part are discharged from tunnel exit；Another group of integrated air exhaust mouth is interflow exhaust outlet, and it is arranged on and tunnel exit
Distance is 15%~20% opening position of tunnel total length, and the air draft pattern of the interflow exhaust outlet discharges formula for confluent type ventilation shaft,
It is using tunnel traffic draft power as exhaust resistance, and pollutant is discharged from exhaust outlet in tunnel；When the average speed in tunnel
During more than or equal to 40km/h, shunting exhaust outlet is opened to carry out air draft using shunting discharge mode, when the speed in tunnel is less than
During 40km/h, interflow exhaust outlet is opened to carry out air draft using interflow discharge mode.
2. tunnel ventilation dynamic exhaust method as claimed in claim 1, it is characterised in that the blowdown flow rate for shunting exhaust outlet is not small
In 70%, the blowdown flow rate for collaborating exhaust outlet is 100%.
3. a kind of tunnel ventilation dynamic air exhausting device, it is characterised in that the device includes two groups of integrated air exhausts in tunnel
Mouthful, one of which integrated air exhaust mouth is shunting exhaust outlet, and it is arranged on 100m~200m opening positions apart from tunnel exit, the group
The air draft pattern of exhaust outlet is that bypass type ventilation shaft discharges formula, and it is dirty in tunnel using tunnel traffic draft power as air draft power
Contaminate a thing part to discharge from exhaust outlet, a part is discharged from tunnel exit；Another group of integrated air exhaust mouth is interflow exhaust outlet, and it sets
Put and lead to 15%~20% opening position that tunnel exit distance is tunnel total length, the air draft pattern of this group of exhaust outlet for confluent type
Ventilating shaft discharges formula, and it is using tunnel traffic draft power as exhaust resistance, and pollutant is discharged from exhaust outlet in tunnel；Two groups of concentrations
One end of exhaust outlet is connected with tunnel (1), and the other end is by getting in touch with air channel (7) and air draft computer room (4) and exhaust chimney (8)
It is connected.
4. tunnel ventilation dynamic air exhausting device as claimed in claim 3, it is characterised in that it is described shunting exhaust outlet be arranged on away from
From the 150m opening positions of tunnel exit.
5. tunnel ventilation dynamic air exhausting device as claimed in claim 4, it is characterised in that it is described interflow exhaust outlet be arranged on
Tunnel exit distance is 18% opening position of tunnel total length.
6. the tunnel ventilation dynamic air exhausting device as described in claim any one of 3-5, it is characterised in that when being averaged in tunnel
When speed is more than or equal to 40km/h, shunting exhaust outlet is opened to carry out air draft using shunting discharge mode, when the speed in tunnel
During less than 40km/h, interflow exhaust outlet is opened to carry out air draft using interflow discharge mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610591028.6A CN106050291B (en) | 2016-07-26 | 2016-07-26 | A kind of tunnel ventilation dynamic exhaust method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610591028.6A CN106050291B (en) | 2016-07-26 | 2016-07-26 | A kind of tunnel ventilation dynamic exhaust method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106050291A CN106050291A (en) | 2016-10-26 |
| CN106050291B true CN106050291B (en) | 2018-01-26 |
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| CN101429870A (en) * | 2008-12-04 | 2009-05-13 | 浙江省交通规划设计研究院 | Fan setting method for road tunnel multi-silo system |
| CN202170803U (en) * | 2011-08-01 | 2012-03-21 | 湖南省交通规划勘察设计院 | Very long, deep-buried highway tunnel parallel adit ventilation operation system |
| CN104265347B (en) * | 2014-07-25 | 2016-08-24 | 天津市市政工程设计研究院 | A kind of multiparameter tunnel ventilation control method based on rate of discharge and concentration |
| CN205297617U (en) * | 2015-11-25 | 2016-06-08 | 天津瑞茂名果科技有限公司 | A air purification ventilation unit for tunnel |
| CN205135690U (en) * | 2015-11-30 | 2016-04-06 | 四川省交通运输厅公路规划勘察设计研究院 | Energy -conserving ventilation shaft in tunnel of growing up |
| CN205840905U (en) * | 2016-07-26 | 2016-12-28 | 中铁第四勘察设计院集团有限公司 | A kind of dynamic air exhausting device of tunnel ventilation |
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