CN101463731A - High-speed thermal circulation air curtain construction method for tunnel portal - Google Patents
High-speed thermal circulation air curtain construction method for tunnel portal Download PDFInfo
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- CN101463731A CN101463731A CNA2008102052946A CN200810205294A CN101463731A CN 101463731 A CN101463731 A CN 101463731A CN A2008102052946 A CNA2008102052946 A CN A2008102052946A CN 200810205294 A CN200810205294 A CN 200810205294A CN 101463731 A CN101463731 A CN 101463731A
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Abstract
The invention relates to the field of fixed buildings, in particular to a construction method of a tunnel portal high-speed thermal-circulation air curtain applicable to track traffic positive line and access field line portals in high-latitude and high-cold areas. In the method, when a subway underground section is opened to the ground surface, a tunnel portal is provided with a thermal air curtain spouted at a high speed; a thick air curtain is formed at the tunnel portal, preventing sever cold air outside the tunnel from invading and reducing heat exchange; in a parallel-double-portal tunnel, a communicating channel and a circuitous channel are added and arranged in a partition wall of the tunnel, effectively channelizing train piston air; meanwhile, a circulated air channel, a break-of-gauge channel, a circulation chamber, and the like, are arranged to circulate hot air, thus effectively reducing the calorific requirement of an adjacent station, stabilizing the temperature in a station, and reducing the freezing of a hot-cold intersection of the portal and ensuring traffic safety.
Description
Technical field
The present invention relates to the fixed buildings class, concrete is to be suitable for high latitude extremely frigid zones track traffic main track and a kind of high-speed thermal circulation air curtain construction method for tunnel portal of the field wire portals of coming in and going out.
Background technology
In subway system, local interval down by underground when extending to ground, because the influence of the Piston Wind of train driving, train access tunnel portals or because the influence of contiguous tunnel train operation causes tunnel portal and outdoor air to exist air-flow to exchange.The highest instantaneous air-flow can surpass 15m/s in the tunnel that train directly travels, and also can reach several meter per seconds and be subjected to influence between proximity wind speed.
Be similar to the high latitude extremely frigid zones in Harbin, when outside air temperature is extremely low (is-26 ℃ as Border in Harbin Area winter heating temperature), the severe cold air feeds tunnel portal and enters subway system, must make contiguous station temperature be subjected to very big interference.Simultaneously, the subway internal temperature remains on more than 5 ℃ under the normal condition, and on the cold and hot handing-over of portals interface, the frequent turnover of air-flow makes tunnel portal freezing phenomenon occur, thereby influences traffic safety.
In China because it is less to be in the metropolis of high latitude severe cold areas, the subway system on ground such as Shenyang, Changchun, Harbin all also in planning or building, the prior art of not dealing with problems targetedly as yet.
Summary of the invention
The objective of the invention is for solving above-mentioned described problem, a kind of high-speed thermal circulation air curtain construction method for tunnel portal is provided, this method is when leading to ground in the underground interval of subway, at tunnel portal the cycling hot air curtain of ejection at a high speed is installed, form a stifled thick air curtain wall at tunnel portal, to stop the outside severe cold air intrusion in tunnel, reduce interchange of heat.
The object of the invention realizes being finished by following technical scheme:
A kind of high-speed thermal circulation air curtain construction method for tunnel portal, in tunnel portal one side one group of air treatment unit is installed, spray warm air curtain through air treatment unit heating air pressurized at a high speed via air outlet and the high speed nozzle that is connected air outlet, flow to the position at tunnel portal opposite side warm air curtain circulation air path is set, reflux heat air curtain self-loopa air channel is via the circulation chamber that rail air channel flow back into connects air treatment unit air intake vent of crossing that is arranged on tunnel upper, enter the air treatment unit again, finish the circulation of warm air curtain.The warm air curtain wind speed of described high speed nozzle ejection is not less than 20 meter per seconds, and the setting angle of high speed nozzle is as the criterion to guarantee the circulation air path inlet that warm air curtain flows to opposite side.
A kind of high-speed thermal circulation air curtain construction method for tunnel portal, one group of air treatment unit respectively is installed in the both sides, tunnel, air intake vent connection at the air treatment unit is provided with circulation chamber, spray at a high speed via air outlet and the high speed nozzle that is connected air outlet through air treatment unit heating air pressurized, produce the twice warm air curtain at tunnel portal, the warm air curtain that one side produces blows the circulation chamber toward opposite side, forms the cycling hot air curtain.The warm air curtain wind speed of described high speed nozzle ejection is not less than 20 meter per seconds, and the setting angle of high speed nozzle is as the criterion to guarantee the circulation chamber that warm air curtain flows to opposite side.
When for the parallel double cave tunnel of two-wire operation, on the tunnel divider wall on warm air curtain is flowed through route passage is set, and on passage, fire curtain is installed.
Circuitous air channel is set on the divider wall in parallel double cave tunnel.
Advantage of the present invention is, this method is used to stop that severe cold cool exterior air in winter invades underground interval and contiguous station, thereby reaches two purposes: (1) effectively reduce contiguous station calorific requirement, stablize the station temperature; (2) reduce the freezing phenomenon that the cold and hot intersection of portals produces, make traffic safety.
Description of drawings
Fig. 1 is the embodiment of the invention one a unit group construction schematic diagram;
Fig. 2 is the embodiment of the invention two a two-shipper groups construction schematic diagram.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail, so that technician's of the same trade understanding:
Shown in Fig. 1-2, label 1-11 represents respectively: tunnel portal 1, air treatment unit 2, air treatment unit air outlet 3, high speed nozzle 4, circulation air path inlet 5, circulation air path 6, mistake rail air channel 7, circulation chamber 8, air treatment unit air intake vent 9, path 10, circuitous air channel 11, tunnel divider wall 12.
Embodiment one: as shown in Figure 1, present embodiment is installed one group of air treatment unit 2 in tunnel portal 1 one sides, spray warm air curtain through air treatment unit 2 heating air pressurized at a high speed via air outlet 3 and the high speed nozzle 4 that is connected air outlet, flow to the position at tunnel opposite side warm air curtain circulation air path 6 is set, warm air curtain passes through circulation air path 6 successively, crosses the circulation chamber 8 that rail air channel 7 flow back intos connect air treatment unit air intake vent 9, enter air treatment unit 2 again, finish the circulation of warm air curtain.
Wherein, the warm air curtain wind speed of high speed nozzle 1 ejection must be not less than 20 meter per seconds, has certain thick high high velocity air to eject, and forms thick warm air curtain at portals, intercepts outside cold wind invasion; If when the main track of two-wire operation is interval, then on the tunnel divider wall 12 that warm air curtain is flowed through, path 10 is installed, and the circuitous air channel 11 of about 30 square metres of sizes is installed on the divider wall 12 in parallel double cave tunnel, the train Piston Wind is dredged.Like this, employing stops and dredges to work along both lines and reduce the cold air intrusion of portals.For guaranteeing safety, fire curtain can be installed on passage.
For realizing the circulation of warm air curtain, when being installed, high speed nozzle must adjust nozzle angle, guarantee that warm air curtain flows to the circulation air path inlet 5 of opposite side, finishes and backflows.
Embodiment two: as shown in Figure 2, one group of air treatment unit 2, high speed nozzle 4 and circulation chamber 8 respectively are installed in the both sides, tunnel in the present embodiment, produce the twice warm air curtain at tunnel portal, wherein the warm air curtain of side generation blows the circulation chamber 8 toward opposite side, forms the cycling hot air curtain.The warm air curtain wind speed of high speed nozzle 4 ejections must be not less than 20 meter per seconds equally, and the setting angle of high speed nozzle 4 must guarantee that warm air curtain flows to the circulation chamber 8 of opposite side.
When for the parallel double cave tunnel of two-wire operation, on the tunnel divider wall 12 that warm air curtain is flowed through, path 10 is set, on the path 10 fire curtain can be installed.Circuitous air channel 11 is set on the divider wall 12 in parallel double cave tunnel.
The present invention has obtained application in the construction of Subway Line 1, Harbin, about 300,000 yuan/cover of cost has solved relevant issues, obtains positive effect.
Adopt the inventive method, can reach following effect:
(1) prevents that nearly portals station is excessively cold
If do not take to stop cold air invasion measure at tunnel portal, form a large amount of during train turnover portals Piston Action Wind. During the train departures, a large amount of warm air are taken out of subway by train, cause the station entrance-exit to be advanced Entering cold wind affects the station, makes the expensive heat of a large amount of guarantor of subway internal loss; On the other hand, when train enters the station, Carry again a large amount of outdoor severe cold air and enter the station. Like this, the temperature at station can not guarantee. Portals After setting up high-speed thermal circulation air curtain, the train Piston Action Wind is dredged and stopped, force Piston Action Wind on ground Circulation in the iron system, even the cold wind invasion is arranged, through the preheating of warm air curtain, temperature also is increased to necessarily Temperature, thereby stablize the station temperature, prevent that the station is excessively cold.
(2) prevent that tunnel portal is freezing
Severe cold winter, on the cold and hot air interface of indoor and outdoor, warm room air meet cold after, sky Condensation of moisture Cheng Shuan in the gas, gather at the portals surface of wall, form thick frost zone after long-time. If tunnel portal forms and freezes layer, must affect traffic safety. At tunnel portal the high speed warm air curtain is installed, Effectively stop cold and hot air exchange, thereby extenuated the freezing phenomenon of portals.
Claims (6)
1. high-speed thermal circulation air curtain construction method for tunnel portal, it is characterized in that one group of air treatment unit being installed in tunnel portal one side, through air treatment unit heating air pressurized via the air outlet of described air treatment unit and be connected the high speed nozzle of this air outlet, spray warm air curtain at a high speed, flow to the position at described tunnel portal tunnel wall opposite side warm air curtain circulation air path is set, the reflux heat air curtain connects the circulation chamber of air treatment unit air intake vent via the flow back into of rail air channel excessively that is arranged on tunnel upper from described circulation air path, flow into the air treatment unit again, finish the circulation of warm air curtain.
2. a kind of high-speed thermal circulation air curtain construction method for tunnel portal according to claim 1, the warm air curtain wind speed that it is characterized in that the ejection of described high speed nozzle is not less than 20 meter per seconds, and the setting angle of high speed nozzle is as the criterion to guarantee the circulation air path inlet that warm air curtain flows to opposite side.
3. high-speed thermal circulation air curtain construction method for tunnel portal, it is characterized in that one group of air treatment unit respectively being installed in same tunnel portal both sides, air intake vent connection at the air treatment unit is provided with circulation chamber, through air treatment unit heating air pressurized via the air outlet of described air treatment unit and be connected the high speed nozzle of air outlet, ejection at a high speed, produce the twice warm air curtain at tunnel portal, wherein the warm air curtain of side generation blows the circulation chamber toward opposite side, forms the cycling hot air curtain.
4. a kind of high-speed thermal circulation air curtain construction method for tunnel portal according to claim 3, the warm air curtain wind speed that it is characterized in that the ejection of described high speed nozzle is not less than 20 meter per seconds, and the setting angle of high speed nozzle is as the criterion to guarantee the circulation chamber that warm air curtain flows to opposite side.
5. according to claim 1 or 3 described a kind of high-speed thermal circulation air curtain construction method for tunnel portal, it is characterized in that on the tunnel divider wall on warm air curtain is flowed through route passage being set.
6. a kind of high-speed thermal circulation air curtain construction method for tunnel portal according to claim 5 is characterized in that being provided with circuitous air channel on described divider wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810205294 CN101463731B (en) | 2008-12-31 | 2008-12-31 | High-speed thermal circulation air curtain construction method for tunnel portal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200810205294 CN101463731B (en) | 2008-12-31 | 2008-12-31 | High-speed thermal circulation air curtain construction method for tunnel portal |
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| CN101463731A true CN101463731A (en) | 2009-06-24 |
| CN101463731B CN101463731B (en) | 2011-02-09 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425443A (en) * | 2011-11-11 | 2012-04-25 | 上海市隧道工程轨道交通设计研究院 | Tunnel smoke control device for supplying air from parallel tunnels |
| CN102644994A (en) * | 2012-05-08 | 2012-08-22 | 同济大学 | Large-scale underground space frequency conversion combined ventilation system |
| CN104879155A (en) * | 2015-04-30 | 2015-09-02 | 中国有色集团抚顺红透山矿业有限公司 | Method and system for mine air flow quality monitoring and alarming on basis of controllable circulating air |
| CN106401644A (en) * | 2016-10-27 | 2017-02-15 | 石家庄铁道大学 | Air curtain heat preservation heating system for tunnels in cold region |
| CN109190246A (en) * | 2018-08-31 | 2019-01-11 | 淮阴工学院 | A kind of calculation method that cold area's railway tunnel air curtain heat preservation is theoretical |
| CN109236344A (en) * | 2018-11-21 | 2019-01-18 | 重庆大学 | Tunnel wind field regulator control system by the island subway platform of underground |
| CN110440359A (en) * | 2019-08-22 | 2019-11-12 | 南方电网调峰调频发电有限公司 | Coastal waters underground engineering utilizes the air-treatment and transportation system of access tunnel air inlet |
| CN110617078A (en) * | 2019-09-27 | 2019-12-27 | 广州地铁设计研究院股份有限公司 | Embedded air duct type rail passing structure |
| CN111111905A (en) * | 2019-12-31 | 2020-05-08 | 河南职业技术学院 | Subway air monitoring and purifying system |
| CN111764948A (en) * | 2020-07-28 | 2020-10-13 | 重庆交通大学 | Highway tunnel crowd disaster prevention system |
| CN111779527A (en) * | 2020-06-29 | 2020-10-16 | 中铁第一勘察设计院集团有限公司 | Self-air curtain system with platform for horseshoe tunnel to reduce air invasion |
| CN113790067A (en) * | 2021-09-13 | 2021-12-14 | 廊坊康平空调制造有限公司 | Multi-stage airflow combination cold and warm air isolation and heat preservation system for cold region tunnel |
-
2008
- 2008-12-31 CN CN 200810205294 patent/CN101463731B/en active Active
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425443A (en) * | 2011-11-11 | 2012-04-25 | 上海市隧道工程轨道交通设计研究院 | Tunnel smoke control device for supplying air from parallel tunnels |
| CN102425443B (en) * | 2011-11-11 | 2014-01-01 | 上海市隧道工程轨道交通设计研究院 | Tunnel smoke control device for supplying air from parallel tunnels |
| CN102644994A (en) * | 2012-05-08 | 2012-08-22 | 同济大学 | Large-scale underground space frequency conversion combined ventilation system |
| CN104879155A (en) * | 2015-04-30 | 2015-09-02 | 中国有色集团抚顺红透山矿业有限公司 | Method and system for mine air flow quality monitoring and alarming on basis of controllable circulating air |
| CN106401644A (en) * | 2016-10-27 | 2017-02-15 | 石家庄铁道大学 | Air curtain heat preservation heating system for tunnels in cold region |
| CN109190246A (en) * | 2018-08-31 | 2019-01-11 | 淮阴工学院 | A kind of calculation method that cold area's railway tunnel air curtain heat preservation is theoretical |
| CN109190246B (en) * | 2018-08-31 | 2023-03-10 | 淮阴工学院 | Computing method for air curtain heat preservation theory of railway tunnel in cold region |
| CN109236344A (en) * | 2018-11-21 | 2019-01-18 | 重庆大学 | Tunnel wind field regulator control system by the island subway platform of underground |
| CN110440359B (en) * | 2019-08-22 | 2021-05-04 | 南方电网调峰调频发电有限公司 | Air treatment and conveying system for offshore underground engineering by utilizing air intake of traffic hole |
| CN110440359A (en) * | 2019-08-22 | 2019-11-12 | 南方电网调峰调频发电有限公司 | Coastal waters underground engineering utilizes the air-treatment and transportation system of access tunnel air inlet |
| CN110617078A (en) * | 2019-09-27 | 2019-12-27 | 广州地铁设计研究院股份有限公司 | Embedded air duct type rail passing structure |
| CN110617078B (en) * | 2019-09-27 | 2021-05-18 | 广州地铁设计研究院股份有限公司 | Embedded air duct type rail passing structure |
| CN111111905A (en) * | 2019-12-31 | 2020-05-08 | 河南职业技术学院 | Subway air monitoring and purifying system |
| CN111779527A (en) * | 2020-06-29 | 2020-10-16 | 中铁第一勘察设计院集团有限公司 | Self-air curtain system with platform for horseshoe tunnel to reduce air invasion |
| CN111764948A (en) * | 2020-07-28 | 2020-10-13 | 重庆交通大学 | Highway tunnel crowd disaster prevention system |
| CN113790067A (en) * | 2021-09-13 | 2021-12-14 | 廊坊康平空调制造有限公司 | Multi-stage airflow combination cold and warm air isolation and heat preservation system for cold region tunnel |
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| Publication number | Publication date |
|---|---|
| CN101463731B (en) | 2011-02-09 |
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