CN204419226U - Point row formula subway tunnel ventilation smoke extraction system - Google Patents
Point row formula subway tunnel ventilation smoke extraction system Download PDFInfo
- Publication number
- CN204419226U CN204419226U CN201420814435.5U CN201420814435U CN204419226U CN 204419226 U CN204419226 U CN 204419226U CN 201420814435 U CN201420814435 U CN 201420814435U CN 204419226 U CN204419226 U CN 204419226U
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- smoke
- tunnel
- flue gas
- vertical shaft
- duct
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Abstract
A kind of some row formula subway tunnel ventilation smoke extraction system, comprise the vertical shaft (6) at subway sectional tunnel two ends, tunnel top between the vertical shaft (6) at two ends, tunnel is provided with smoke duct (1), and the port of smoke duct (1) is in communication with the outside through vertical shaft (6); The bottom of smoke duct (1) is axially equidistantly furnished with smoke evacuation air port (4) to be opened/closed, and near smoke evacuation air port (4), position is provided with flue gas monitoring sensor (7); Exhaust blower (5) is arranged on smoke duct (1) inner chamber near port; Smoke evacuation air port (4), flue gas monitoring sensor (7) and exhaust blower (5) are all electrically connected with central control unit.This system shortens the propagation distance of high-temperature flue gas in tunnel, and effectively stop high-temperature flue gas in the diffusion of tunnel space, smoke exhaust efficiency is high.
Description
Technical field
The utility model relates to underground railway tunnel fire aeration technology field, particularly one point row formula subway tunnel ventilation smoke extraction system.
Background technology
Current subway sectional tunnel (tunnels between two platforms) Fire Ventilation mode adopts longitudinal ventilation usually.Namely, when train catches fire, from running tunnel one end, unidirectional longitudinally air-supply stops that high-temperature flue gas is to the backflow of air-supply end, and then high-temperature flue gas is discharged tunnel from the vertical shaft in air-supply front.It exists following not enough: although effectively can stop smoke backflow, fire position is when train near middle, and some passenger is in high-temperature flue gas concentrated area and comes to harm all the time; To longer running tunnel, then high-temperature flue gas may be pushed to another train of the running tunnel that coexists, the passenger of another train is caused damage.And high-temperature flue gas is full of the front of running tunnel air supply section, cause the air pollution of tunnel larger area, also can cause damage to the equipment in tunnel, facility.
Utility model content
The purpose of this utility model is the deficiency existed for domestic underground railway tunnel fire draft type, provides a kind of some row formula subway tunnel ventilation smoke extraction system.Flue gas can be discharged to the exterior space by this system effectively, and smoke exhaust efficiency is high.
The technical solution that the utility model adopts is: a kind of some row formula subway tunnel ventilation smoke extraction system, comprise the exhaust blower near the vertical shaft at subway sectional tunnel two ends, vertical shaft, wherein: the tunnel top between the vertical shaft at described two ends, tunnel is provided with smoke duct, the port of smoke duct is in communication with the outside through vertical shaft; The bottom of smoke duct is axially equidistantly furnished with smoke evacuation air port to be opened/closed, and near smoke evacuation air port, position is provided with flue gas monitoring sensor; Exhaust blower is arranged on smoke duct inner chamber near port.Smoke evacuation air port, flue gas monitoring sensor and exhaust blower are all and central control unit electrical connection.
Described smoke duct is enclosed by the wall of tunnel top and fire proofing wood flitch and forms; Fire proofing wood flitch is connected by expansion bolt with tunnel top wall, and is sealed by high temperature fireproof sealing material.
Described adjacent smoke evacuation draught interval is 60-120m.
The course of work of the present utility model and principle are:
When not having fire to occur, exhaust blower and all smoke evacuation air ports are closed, and system is in standby monitoring state.
When flue gas monitoring sensor has detected that flue gas produces, and the flue gas concentration that detects of one of them flue gas monitoring sensor apparently higher than remaining flue gas monitoring sensor time, then central control unit judges that ignition point is positioned at this sensor proximity, open the smoke evacuation air port of this flue gas monitoring sensor proximity, open two exhaust blowers simultaneously; High-temperature flue gas enters smoke duct by smoke evacuation air port rapidly, under the swabbing action of exhaust blower, discharge tunnel by vertical shaft.Fresh air is supplemented by two ends, tunnel.
When flue gas monitoring sensor has detected that flue gas produces, and wherein the flue gas concentration difference that detects of two flue gas monitoring sensors is little, time again apparently higher than remaining flue gas monitoring sensor, then central control unit judges that ignition point is between these two sensors, open the smoke evacuation air port of these two flue gas monitoring sensor proximity, open two exhaust blowers simultaneously; High-temperature flue gas enters smoke duct by smoke evacuation air port rapidly, under the swabbing action of exhaust blower, discharge tunnel by vertical shaft.Fresh air is supplemented by two ends, tunnel.
Compared with prior art, the beneficial effects of the utility model are:
When fire occurs, high-temperature flue gas directly enters independent smoke duct from one or two smoke evacuation air port neighbouring, and pumps out tunnel rapidly, farthest shortens the propagation distance of high-temperature flue gas in tunnel, more effectively prevent the diffusion of high-temperature flue gas at whole tunnel space, smoke exhaust efficiency is high.High-temperature flue gas is discharged from the smoke duct at top, existing longitudinal ventilation is avoided to damage the passenger on the train in air-supply front, more can not damage the passenger of adjacent train, also mitigate the thermal etching to equipment in tunnel simultaneously, farthest decrease fire damage.
Accompanying drawing explanation
Fig. 1 is structure and the air draft schematic diagram (ignition point of fire is positioned near a smoke evacuation air port) of the utility model embodiment;
Fig. 2 is structure and the air draft schematic diagram (ignition point of fire is between two smoke evacuation air ports) of the utility model embodiment;
In Fig. 1 and Fig. 2,8 is ignition point position, and 9 is fire smoke.
Detailed description of the invention:
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1-2 illustrates, a kind of detailed description of the invention of the present utility model is, a kind of some row formula subway tunnel ventilation smoke extraction system, comprise the exhaust blower 5 near the vertical shaft 6 at subway sectional tunnel two ends, vertical shaft 6, wherein: the tunnel top between the vertical shaft 6 at described two ends, tunnel is provided with smoke duct 1, the port of smoke duct 1 is communicated with vertical shaft 6; The bottom of smoke duct 1 is axially equidistantly furnished with smoke evacuation air port 4 to be opened/closed, and near smoke evacuation air port 4, position is provided with flue gas monitoring sensor 7; Exhaust blower 5 is arranged on smoke duct 1 inner chamber near port.Smoke evacuation air port 4, flue gas monitoring sensor 7 and exhaust blower 5 are all and central control unit electrical connection.
Described smoke duct 1 is enclosed by the wall 2 of tunnel top and fire proofing wood flitch 3 and forms; Fire proofing wood flitch is connected by expansion bolt with tunnel top wall, and is sealed by high temperature fireproof sealing material.
Described adjacent smoke evacuation draught interval is 60-120m.
The course of work and the principle of the present embodiment are:
When not having fire to occur, exhaust blower 5 and all smoke evacuation air ports 4 are closed, and system is in standby monitoring state.
Fig. 1 illustrates, when flue gas monitoring sensor 7 has detected that flue gas produces, and the flue gas concentration that detects of one of them flue gas monitoring sensor 7 apparently higher than remaining flue gas monitoring sensor 7 time, then central control unit judges that ignition point is positioned near this sensor 7, open the smoke evacuation air port 4 near this flue gas monitoring sensor 7, open two exhaust blowers 5 simultaneously; High-temperature flue gas enters smoke duct 1 by smoke evacuation air port 4 rapidly, under the swabbing action of exhaust blower 5, discharge tunnel by vertical shaft 6.Fresh air is supplemented by two ends, tunnel.
Fig. 2 illustrates, when flue gas monitoring sensor 7 has detected that flue gas produces, and wherein the flue gas concentration difference that detects of two flue gas monitoring sensors 7 is little, time again apparently higher than remaining flue gas monitoring sensor 7, then central control unit judges that ignition point is between these two sensors 7, open the smoke evacuation air port 4 near these two flue gas monitoring sensors 7, open two exhaust blowers 5 simultaneously; High-temperature flue gas enters smoke duct 1 by smoke evacuation air port 4 rapidly, under the swabbing action of exhaust blower 5, discharge tunnel by vertical shaft 6.Fresh air is supplemented by two ends, tunnel.
Claims (3)
1. a some row formula subway tunnel ventilation smoke extraction system, comprise the exhaust blower (5) near the vertical shaft (6) at subway sectional tunnel two ends, vertical shaft (6), it is characterized in that: the tunnel top between the vertical shaft (6) at described two ends, tunnel is provided with smoke duct (1), the port of smoke duct (1) is in communication with the outside through vertical shaft (6); The bottom of smoke duct (1) is axially equidistantly furnished with smoke evacuation air port (4) to be opened/closed, and near smoke evacuation air port (4), position is provided with flue gas monitoring sensor (7); Exhaust blower (5) is arranged on smoke duct (1) inner chamber near port; Smoke evacuation air port (4), flue gas monitoring sensor (7) and exhaust blower (5) are all electrically connected with central control unit.
2. one point row formula subway tunnel ventilation smoke extraction system according to claim 1, is characterized in that: described smoke duct (1) is enclosed by the wall (2) of tunnel top and fire proofing wood flitch (3) and forms; Fire proofing wood flitch is connected by expansion bolt with tunnel top wall, and is sealed by high temperature fireproof sealing material.
3. one point row formula subway tunnel ventilation smoke extraction system according to claim 1, is characterized in that: described adjacent smoke evacuation draught interval is 60-120m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420814435.5U CN204419226U (en) | 2014-12-18 | 2014-12-18 | Point row formula subway tunnel ventilation smoke extraction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420814435.5U CN204419226U (en) | 2014-12-18 | 2014-12-18 | Point row formula subway tunnel ventilation smoke extraction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204419226U true CN204419226U (en) | 2015-06-24 |
Family
ID=53469608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420814435.5U Expired - Fee Related CN204419226U (en) | 2014-12-18 | 2014-12-18 | Point row formula subway tunnel ventilation smoke extraction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204419226U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533498A (en) * | 2014-12-18 | 2015-04-22 | 西南交通大学 | Point exhaust type subway tunnel fire ventilation and smoke exhaust system |
| CN106121707A (en) * | 2016-08-19 | 2016-11-16 | 中铁隧道勘测设计院有限公司 | The most two-tube municipal administration and highway are grown up the ventilating system of shield tunnel and method of ventilation |
| CN110374658A (en) * | 2019-08-22 | 2019-10-25 | 中南大学 | Tunnel active formula tilts ceiling smoke evacuation system and method |
| CN111720939A (en) * | 2020-05-29 | 2020-09-29 | 中和华丰建设有限责任公司 | Dormitory corridor ventilation system of discharging fume |
| CN112127932A (en) * | 2020-08-24 | 2020-12-25 | 东南大学 | Lateral smoke exhaust auxiliary flow guide control device and method |
-
2014
- 2014-12-18 CN CN201420814435.5U patent/CN204419226U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533498A (en) * | 2014-12-18 | 2015-04-22 | 西南交通大学 | Point exhaust type subway tunnel fire ventilation and smoke exhaust system |
| CN106121707A (en) * | 2016-08-19 | 2016-11-16 | 中铁隧道勘测设计院有限公司 | The most two-tube municipal administration and highway are grown up the ventilating system of shield tunnel and method of ventilation |
| CN106121707B (en) * | 2016-08-19 | 2019-04-19 | 中铁第六勘察设计院集团有限公司 | Underwater two-tube municipal administration and highway are grown up the ventilating system and method for ventilation of shield tunnel |
| CN110374658A (en) * | 2019-08-22 | 2019-10-25 | 中南大学 | Tunnel active formula tilts ceiling smoke evacuation system and method |
| CN110374658B (en) * | 2019-08-22 | 2024-02-27 | 中南大学 | Tunnel movable inclined ceiling smoke exhausting system and method |
| CN111720939A (en) * | 2020-05-29 | 2020-09-29 | 中和华丰建设有限责任公司 | Dormitory corridor ventilation system of discharging fume |
| CN111720939B (en) * | 2020-05-29 | 2021-10-08 | 中和华丰建设有限责任公司 | Dormitory corridor ventilation system of discharging fume |
| CN112127932A (en) * | 2020-08-24 | 2020-12-25 | 东南大学 | Lateral smoke exhaust auxiliary flow guide control device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20171218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |