CN201843630U - Road tunnel air purification and exhaust structure without exhaust shafts - Google Patents
Road tunnel air purification and exhaust structure without exhaust shafts Download PDFInfo
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- CN201843630U CN201843630U CN2010205968092U CN201020596809U CN201843630U CN 201843630 U CN201843630 U CN 201843630U CN 2010205968092 U CN2010205968092 U CN 2010205968092U CN 201020596809 U CN201020596809 U CN 201020596809U CN 201843630 U CN201843630 U CN 201843630U
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- air
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Abstract
The utility model discloses a road tunnel air purification and exhaust structure without exhaust shafts, which comprises an induced draft opening, an induced draft pipeline, a tunnel polluted air purifying device, a fan, an exhaust pipeline and an exhaust opening, wherein the induced draft pipeline is communicated with the induced draft opening, the tunnel polluted air purifying device is connected with the induced draft pipeline, the fan is connected with the road tunnel polluted air purifying device, the exhaust pipeline is communicated with the fan, and the exhaust opening is communicated with the exhaust pipeline. The road tunnel air purification and exhaust structure without exhaust shafts overcomes shortcomings of the scheme of arranging exhaust shafts and exhaust towers and the scheme of exhausting polluted air from openings directly, thoroughly eliminates difficulty in site selection of exhaust shafts and exhaust towers in road tunnels and adverse effect on landscapes, and reduces pollution of the atmosphere due to the tunnels greatly.
Description
Technical field
The utility model relates to a kind of tunnel air exhaust system, relates in particular to the contaminated air emission abatement system in a kind of roads and tunnels.
Background technology
Along with economic development, urban traffic contradiction becomes increasingly conspicuous, and intercity transport need is risen day by day, and roads and tunnels becomes an advantageous methods of transport solution contradiction, becomes the important component part of means of transportation.But, contain dust granules thing (PM), carbon monoxide (CO), hydrocarbon (HC) and nitrogen oxide (NO in the tunnel in the air because the tunnel is full-closed structure
X) wait pollutant.Particle PM in the tunnel air can cause the chromosome aberration of blood lymphocyte; CO combines with human body hemoglobin because of it, directly lowers blood band oxygen amount, makes the people headache, lethargic sleep, unbalanced sensation occur, can cause death during excessive concentration; HC meeting teratogenesis, carcinogenic, mutagenesis, and cause photochemical fog; NO
XCan damage vision, respiratory system, cause and suffocate, also can cause acid rain, cause photochemical fog.So,, will have a strong impact on the traffic safety of driver and crew in the tunnel and healthy as untimely discharging tunnel internal contamination air.
Up to now, the roads and tunnels that has been open to traffic, pollutant be the only ventilation system dilution by being provided with generally, though this can handle the tunnel internal pollution problem more effectively, but contaminated air still directly is disposed to and is caused secondary pollution in the atmospheric environment generally without purified treatment.General for the tunnel below the long 500m, regulation according to JTJ026.1 " highway tunnel ventilation illumination design standard " and DG/TJ08-2033 relevant specifications such as " roads and tunnels design specificationss ", normal, block under the operating mode, allow natural ventilation, contaminated air can directly be discharged from going out the hole.For the tunnel more than the 500m, when peripheral open, the tunnel face of its outlet when environment sensitive point (residential community, school, hospital, Office Area etc.) is far away, contaminated air can adopt the mode of all directly discharging from the hole.Do not allow tunnel portal directly to discharge under the condition of all contaminants at environment, can be by the exhaust blower of centralized collection tunnel internal contamination air be set, external environment requirement according to the hole, determine the amount of pollutant of hole discharging earlier, all the other most waste gas are concentrated by the air draft well, be discharged into by wind tower height sky and dilute pollutant in the atmosphere, also reduced the discharge amount of exhaust gas at hole simultaneously, make the outer sensitive spot of certain distance around wind tower and the tunnel face reach the requirement of relevant emission standards.
When a large amount of environment sensitive point is arranged around tunnel face and ventilating shaft, the wind tower, when adopting the empty discharging of wind tower height also can't solve the tunnel external environment to influence problem, especially Japanese abroad, occurred adopting electrostatic precipitator ESP, the removal of removing particle PM in the tunnel contaminated air only to account for NO
X5% NO
2Denitration purifying device.Japanese patent application JP4346852 and JP5015810 disclose two kinds of tunnel electrostatic precipitator respectively, according to demands such as the size in tunnel, Design of ventilation, institute's required airflows, take large-scale independent machine room arrangement, tunnel side line arrangement and tunnel top arrangement.Said apparatus is installed in the tunnel integrated air exhaust system, and contaminated air is through part pollutant (PM, NO
2) purify other NO, HC, SO
2Nuisance is unprocessed, still needs by air draft well, the empty discharging of wind tower height.
Because China's current mobility tail gas discharge standard is lower than the foreign standard same period, make tunnel endoparticle pollutant, CO, NO
XHigher with HC airborne concentration in the tunnel, exploitation is fit to the control and the improvement technology of China's air pollutants of roads and tunnels characteristics, to satisfy the demand of tunnel air pollutant discharging, is extremely necessary.
CN101455929A discloses a kind of high wind-speed tunnel air electric dust-collection system, comprise cleaning module, detection module and cleaning treatment module, the input of cleaning module and detection module all receives tunnel air, the cleaning treatment module is connected with the cleaning module that comprises fore filter, air distributor, electrostatic precipitator, trough filter and post-filter, wherein the input of fore filter receives tunnel air, and the output of post-filter is disposed to atmosphere.This device is mainly used in removes particulate pollutant.
CN101380539A discloses a kind of tunnel air pollutant purification apparatus, this device collection electrostatic precipitation, CO room-temperature catalytic oxidation, HC and NO
XAbsorption/catalytic purification is an one, specifically comprise: electrostatic precipitation module, the air circulation module, the three-effect catalysis module, control module, at least one cleaning module and at least one adsorption module, wherein: the input of electrostatic precipitation module receives tunnel air, the output of electrostatic precipitation module connects the input of cleaning module and the air inlet port of air circulation module respectively, the output of cleaning module connects the input of adsorption module, the output of adsorption module connects the exhaust opening of air circulation module and the input of three-effect catalysis module respectively, and the exhaust opening of the output of three-effect catalysis module and air circulation module directly is disposed to atmosphere.Be connected between this covering device and main tunnel, air channel, ventilating shaft, the wind tower, satisfied the requirement that tunnel air pollutant is administered preferably, the problem that air draft well, exhaust chimney are got rid of tunnel internal contamination air need be set but solve roads and tunnels.
In sum, in the prior art, do not allow under the direct exhaust emission conditions of air of roads and tunnels mouth, need that still the air draft well is set, exhaust chimney is got rid of the contaminated air in the tunnel, and atmospheric environment, view are brought adverse effect at environment.Therefore, being badly in need of a kind of roads and tunnels of exploitation does not have air draft well, exhaust chimney purification air draft structure, can overcome the deficiency that existing tunnel is provided with air draft well, the direct exhaust emission air of exhaust chimney scheme and hole scheme.
The utility model content
The purpose of this utility model is to provide a kind of roads and tunnels not have the air draft well, exhaust chimney purifies the air draft structure.
In order to realize this purpose, roads and tunnels of the present utility model purifies the air draft structure and comprises: air-vent, with the air inducing pipeline of air-vent UNICOM, the tunnel contaminated air purifier that is connected with the air inducing pipeline, the blower fan that is connected with tunnel contaminated air purifier, with the exhaust duct of blower fan UNICOM and with the gas discharge outlet of exhaust duct UNICOM.
Particularly, roads and tunnels of the present utility model purifies the air draft structure, comprising: air-vent 2, air inducing pipeline 3, the tunnel contaminated air purifier 4 that is connected with described air inducing pipeline 3, the blower fan 5 that is connected with described tunnel contaminated air purifier 4 with described air-vent 2 UNICOMs, and the exhaust duct 6 of described blower fan 5 UNICOMs and with the gas discharge outlet 7 of described exhaust duct 6 UNICOMs.
Purify in the concrete enforcement of air draft structure at roads and tunnels of the present utility model, preferred air-vent 2 is connected with tunnel 1.Roads and tunnels described in the utility model comprises road tunnel, various totally-enclosed or partially enclosed running car road.
Purify in the concrete enforcement of air draft structure at roads and tunnels of the present utility model, preferred gas outlet opening 7 is connected with the tunnel portal 8 with contaminated air discharge function.
Purify in the preferred implementation of air draft structure at roads and tunnels of the present utility model, the air-flow of gas discharge outlet 7 is parallel consistent with the direction of the air-flow of tunnel portal 8, and the wind speed of gas discharge outlet 7 is 8～10m/s; Distance 〉=the 50m of air-vent 2 and gas discharge outlet 7, preferred 50m～200m.Such design can reduce to greatest extent and discharge the backflow of air-flow to air-vent 2, helps the discharge of pollutant.
Purify in the concrete enforcement of air draft structure at roads and tunnels of the present utility model, preferred blower fan 5 variable air volume runnings can guarantee that centralized collection arrives the pollutant in the tunnel under the different operating speeds.
Purify in the preferred implementation of air draft structure at roads and tunnels of the present utility model, tunnel portal 8 can be the hole that in automobile single flow route tunnel, also can be to adopt the hole of the automobile double of half horizontal air supply system to the travel tunnel.
When roads and tunnels of the present utility model purifies the concrete enforcement of air draft structure, can be arranged at the side or the top in tunnel.Preferred air inducing pipeline 3, tunnel contaminated air purifier 4, blower fan 5 and exhaust duct 6 are positioned at the side or the top in described tunnel 1.
The space 9 that the fire smoke in roads and tunnels purification air draft structure of the present utility model and tunnel 1 is flowed through is independent respectively to be provided with.The space 9 that flue gas is flowed through can be the tunnel body, also can be the independent mechanical smoke extraction air channel that is provided with.
Purify in the air draft structure at roads and tunnels of the present utility model, preferred tunnel contaminated air purifier 4 along airflow direction successively by the high-pressure electrostatic precipitation unit, efficiently remove NO
X, HC, SO
2Unit and efficient normal temperature remove CO unit and ancillary service composition.Purify in the concrete enforcement of air draft structure at roads and tunnels of the present utility model, contaminated air flows through the wind speed≤3m/s in the cross section of described tunnel contaminated air purifier 4.
Preferably, NO
X, HC, SO
2Can adopt absorption/in and nano material purify, CO can adopt efficient room-temperature catalytic oxidation nano material to purify.CN101530828A discloses a kind of method that air pollutants of roads and tunnels purifies that is used for, and this method can be eliminated the airborne dust of roads and tunnels, CO, NO simultaneously
XAnd HC, by collection electrostatic precipitation, CO room-temperature catalytic oxidation, NO
XForm with HC absorption/catalytic purification unit.It is incorporated herein by reference in full.The device that tunnel of the present utility model contaminated air purifier preferably uses the method among the CN101530828A to obtain.But,, when concrete enforcement of the present utility model, do not get rid of and use the higher contaminated air purification technics device of other purification efficiency along with the development of tunnel air purification technics.
Preferably, each processing unit of described tunnel contaminated air purifier is as follows:
1) high-pressure electrostatic precipitation unit
Adopt pipe electrostatic field structure high-pressure electrostatic precipitation unit, utmost point formula two-region, behind tunnel contaminated air process filter screen, charging area, accumulation area, the absorption net, a large amount of particle PM obtain removing.
2) efficiently remove NO
X, HC, SO
2The unit
Sorbent material is carried on the integral honeycomb carrier, is used for NO
X, HC, SO
2Room temperature absorption, HC, NO and SO
2Diffuse to adsorbent, be attracted in the duct of adsorbent; Alkali lye soaks into/is carried on the integral honeycomb carrier, is used for NO
XNeutralization purifies.The tunnel contaminated air is through honeycomb substrate, adsorbed NO
X, HC etc., most of through chemical reaction, gas phase catalysis, generate nontoxic product.
3) efficient normal temperature removes the CO unit
Adopt catalyzer such as cellular load type nano gold or palladium, i.e. loading type Pd/the C of transition metal oxide modification and Pd/Al
2O
3Catalyzer, catalyst powder efficiently are coated on the integral honeycomb carrier, can work under low concentration, normal temperature humidity and higher wind conditions.The tunnel contaminated air changes into CO through the integral honeycomb carrier with the direct at normal temperatures Catalytic Oxygen of CO
2, reduce CO content in the air.
Preferably, tunnel contaminated air purifier 4 is arranged in and purifies in the machine room 10.The tunnel contaminated air purifies purifier 4 and comprises cleaning equipment and ancillary service.Wherein cleaning equipment comprises the high-pressure electrostatic precipitation unit, efficiently removes NO
X, HC, SO
2Unit and efficient normal temperature remove the CO unit.
Preferably, roads and tunnels of the present utility model purifies the air draft structure and comprises the mechanical air-vent that is connected with tunnel 1, the mechanical air inducing pipeline that links with mechanical air-vent, the tunnel contaminated air purifier that is connected with mechanical air inducing pipeline, the blower fan that is connected with tunnel contaminated air purifier, the mechanical exhaust pipeline that is connected with blower fan, the mechanical outlet opening that is connected with the mechanical exhaust pipeline, the tunnel portal that is connected with mechanical outlet opening with contaminated air discharge function.
When roads and tunnels of the present utility model purified the concrete enforcement of air draft structure, blower fan can be provided with a plurality of according to the design needs.
It is to carry out tunnel internal contamination air purification as follows to discharge that roads and tunnels of the present utility model purifies the air draft structure: the tunnel contaminated air is through air-vent 2, concentrate efficient the collection to introduce in the air inducing pipeline 3 by blower fan 5, through tunnel contaminated air purifier 4 purified treatment, remove a large amount of hazardous substancess (PM, NO
X, CO, HC, SO
2) after, through exhaust duct 6, gas discharge outlet 7, be discharged into atmosphere by tunnel portal 8.
The beneficial effect of roads and tunnels purification air draft structure of the present utility model is as follows:
1, the utility model with roads and tunnels internal contamination air centralized collection purification treatment after, directly be discharged to the open section of tunnel portal and then discharge the tunnel, do not need to be provided with special air draft well, exhaust chimney discharging tunnel contaminated air.
2, the utility model has overcome the shortcoming that air draft well, the direct exhaust emission air of exhaust chimney scheme and hole scheme are set, thoroughly solved roads and tunnels air draft well exhaust chimney addressing difficulty, to the adverse effect of view, greatly degree has reduced the pollution problem of tunnel to atmospheric environment.
Description of drawings
Fig. 1 is the top plan view that roads and tunnels of the present utility model purifies the air draft structure.
Fig. 2 is the sectional drawing that roads and tunnels of the present utility model purifies the air draft structure.
The specific embodiment
Below in conjunction with accompanying drawing roads and tunnels of the present utility model being purified the air draft structure elaborates.
Embodiment 1
As shown in Figure 1, roads and tunnels of the present utility model purifies the air draft structure and comprises the mechanical air-vent 2 that joins with tunnel 1, the mechanical air inducing pipeline 3 that links with mechanical air-vent 2, the tunnel contaminated air purifier 4 that joins with mechanical air inducing pipeline 3, the blower fan 5 that is connected with tunnel contaminated air purifier 4, mechanical exhaust pipeline 6 with blower fan 5 UNICOMs, the mechanical outlet opening 7 that is connected with mechanical exhaust pipeline 6, the tunnel portal with contaminated air discharge function 8 that is connected with mechanical outlet opening 7.
Following mask body illustrates:
The long 2.0km in road tunnel tunnel, unidirectional two tracks, tunnel clear span 11m is provided with tunnel contaminated air purifier 4 couples of PM, NO at tunnel top
X, CO, HC, SO
2Purify.The purification air quantity is 210m
3/ s, the two typhoon amounts that dispose are 115m
3The frequency conversion axial flow blower 5 of/s, for guaranteeing purification efficiency, the cross section wind speed that contaminated air flows through cleaning equipment is 3m/s, the equipment cross sectional area is 70m
2, determine length 40m (not containing blower fan) according to purification efficiency and scavenging material configuration.Therefore, choose the cleaning equipment of 11m (wide) x6.4m (height) x40m (length), along airflow direction, contaminated air is flowed through successively, and the PM of cleaning equipment purifies, NO
X, HC, SO
2Purification and CO clean unit obtain purification in various degree.Blower fan 5 variable frequency control variable air volume runnings.The area of machinery outlet opening 7 is not less than the 10m/s configuration by the outlet wind speed, and net area is 21m
2The length (air-vent 2 is to the distance of mechanical outlet opening 7) of whole air draft structure is controlled between 50～200m and arranges.
The air-flow of gas discharge outlet 7 is parallel consistent with the direction of the air-flow of tunnel portal 8.
The device that tunnel contaminated air purifier 4 adopts the method among the CN101530828A to obtain.Particularly, this installs along airflow direction successively by high-pressure electrostatic precipitation unit, nitrogen oxide NO
XWith total hydrocarbon THC absorption/in and clean unit and CO constant temperature catalyzing clean unit and ancillary service form, purifier 4 is arranged in and purifies in the machine room 10, purifies also to be furnished with in the machine room 10 to purify machine hall, high pressure generator chamber, Sewage Disposal, control room, maintenance and transport channel capital equipment room.
Each processing unit of tunnel contaminated air purifier 4 is as follows:
1) high-pressure electrostatic precipitation unit
Adopt pipe electrostatic field structure high-pressure electrostatic precipitation unit, utmost point formula two-region, behind tunnel contaminated air process filter screen, charging area, accumulation area, the absorption net, a large amount of particle PM obtain removing.
2) nitrogen oxide NO
XWith total hydrocarbon THC absorption/in and clean unit
Sorbent material is carried on the integral honeycomb carrier, is used for the absorption of NO/THC room temperature, and HC and NO diffuse to adsorbent, are attracted in the duct; Alkali lye soaks into/is carried on the integral honeycomb carrier, is used for NO
XNeutralization purifies.The tunnel contaminated air is through honeycomb substrate, adsorbed NO
XAnd THC, most of through chemical reaction, gas phase catalysis, generate nontoxic product.
3) CO constant temperature catalyzing clean unit
Adopt catalyzer such as cellular load type nano gold or palladium, i.e. loading type Pd/the C of transition metal oxide modification and Pd/Al
2O
3Catalyzer, catalyst powder efficiently are coated on the integral honeycomb carrier, can work under low concentration, normal temperature humidity and higher wind conditions.The tunnel contaminated air changes into CO through the integral honeycomb carrier with the direct at normal temperatures Catalytic Oxygen of CO
2, reduce CO content in the air.
Because each clean unit of the tunnel contaminated air purifier 4 that uses in the present embodiment has obtained the Demonstration Application of certain scale in the tunnel, measured data (coming from national science and technology supporting plan " the roads and tunnels air administers key technology research and demonstration project is used " project) shows the purification efficiency of particle PM＞90%, NO
X＞80%, CO＞85%, total HC＞62%, SO
2＞95%, comprehensive regulation efficient＞82%.
Therefore, after roads and tunnels of the present utility model purifies the air draft structure, can remove in the tunnel contaminated air 50% pollutant at least, remaining pollutant can directly be discharged in the atmosphere by being discharged to tunnel portal 8, and does not need to be provided with ventilating shaft, the discharging of wind tower.
Should be appreciated that those of ordinary skill in the art need not creative work and just can make many modifications and variations according to design of the present utility model.Therefore, all those skilled in the art comply with design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in by the determined protection domain of claims of the present utility model.
Claims (10)
1. a roads and tunnels purifies the air draft structure, comprising: air-vent [2], air inducing pipeline [3], the tunnel contaminated air purifier [4] that is connected with described air inducing pipeline [3], the blower fan [5] that is connected with described tunnel contaminated air purifier [4] with described air-vent [2] UNICOM, and the exhaust duct [6] of described blower fan [5] UNICOM and with the gas discharge outlet [7] of described exhaust duct [6] UNICOM.
2. roads and tunnels according to claim 1 purifies the air draft structure, and it is characterized in that: described air-vent [2] is connected with tunnel [1].
3. roads and tunnels according to claim 1 purifies the air draft structure, and it is characterized in that: described gas discharge outlet [7] is connected with the tunnel portal with contaminated air discharge function [8].
4. roads and tunnels according to claim 3 purifies the air draft structure, it is characterized in that: described air-vent [2] is 50m～200m with the distance of described gas discharge outlet [7].
5. purify the air draft structure according to claim 3 or 4 described roads and tunnels, it is characterized in that: described tunnel portal [8] is the hole that in single flow route tunnel, or adopts the hole of the two way roads and tunnels of half horizontal air supply system.
6. roads and tunnels according to claim 1 purifies the air draft structure, and it is characterized in that: described air inducing pipeline [3], described tunnel contaminated air purifier [4], described blower fan [5] and described exhaust duct [6] are positioned at the side or the top in described tunnel [1].
7. roads and tunnels according to claim 6 purifies the air draft structure, it is characterized in that: described roads and tunnels purifies independent respectively setting the in space [9] that air draft is constructed and the fire smoke in described tunnel [1] is flowed through.
8. roads and tunnels according to claim 7 purifies the air draft structure, it is characterized in that:
The space that described flue gas is flowed through [9] is the tunnel body, or the independent mechanical smoke extraction air channel that is provided with.
9. roads and tunnels according to claim 1 purifies the air draft structure, it is characterized in that:
Described tunnel contaminated air purifier [4] is by the high-pressure electrostatic precipitation unit, efficiently except that NO
X, HC, SO
2Unit and efficient normal temperature remove CO unit and ancillary service composition.
10. roads and tunnels according to claim 9 purifies the air draft structure, it is characterized in that: described tunnel contaminated air purifier [4] is arranged in and purifies in the machine room [10].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205968092U CN201843630U (en) | 2010-11-08 | 2010-11-08 | Road tunnel air purification and exhaust structure without exhaust shafts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205968092U CN201843630U (en) | 2010-11-08 | 2010-11-08 | Road tunnel air purification and exhaust structure without exhaust shafts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843630U true CN201843630U (en) | 2011-05-25 |
Family
ID=44038523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205968092U Expired - Lifetime CN201843630U (en) | 2010-11-08 | 2010-11-08 | Road tunnel air purification and exhaust structure without exhaust shafts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201843630U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080559A (en) * | 2010-11-08 | 2011-06-01 | 上海市城市建设设计研究院 | Exhaust airway-free purifying exhaust structure for road tunnel |
| WO2014119952A1 (en) * | 2013-02-04 | 2014-08-07 | Royal Industrial Tech Corp. | Design method of fine dust filtering system for large underground electric facility using induced voltage electrostatic precipitating apparatus |
-
2010
- 2010-11-08 CN CN2010205968092U patent/CN201843630U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080559A (en) * | 2010-11-08 | 2011-06-01 | 上海市城市建设设计研究院 | Exhaust airway-free purifying exhaust structure for road tunnel |
| WO2014119952A1 (en) * | 2013-02-04 | 2014-08-07 | Royal Industrial Tech Corp. | Design method of fine dust filtering system for large underground electric facility using induced voltage electrostatic precipitating apparatus |
| CN104093491A (en) * | 2013-02-04 | 2014-10-08 | 皇家工业技术株式会社 | Design method of fine dust filtering system for large underground electric facility using induced voltage electrostatic precipitating apparatus |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110525 |
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| CX01 | Expiry of patent term |