CN213454053U - High-density hidden-hole pedestrian passageway fire protection system - Google Patents
High-density hidden-hole pedestrian passageway fire protection system Download PDFInfo
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- CN213454053U CN213454053U CN202022623019.5U CN202022623019U CN213454053U CN 213454053 U CN213454053 U CN 213454053U CN 202022623019 U CN202022623019 U CN 202022623019U CN 213454053 U CN213454053 U CN 213454053U
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Abstract
The utility model discloses a high density dark hole pedestrian passageway fire protection system, including blast pipe and the cloth wind subassembly that links to each other rather than, the cloth wind subassembly is located dark hole one side and lays along vertical continuous, and each cloth wind subassembly all includes energy dissipation cloth wind ware and attached cloth wind ware, and simultaneously, the dark hole top still has the pipe of discharging fume of vertical setting, and the interval is provided with the exhaust port on the pipe of discharging fume, through the exhaust port exhaust air and the air supply combined action of cloth wind subassembly, near the export of air supply branch pipe form a directional mobile clean air escape way. The utility model discloses simple structure, the cloth wind is reasonable, the construction of being convenient for, low investment can form the safe space that has relative clean air in the long and narrow region of dark hole one side height 1.8 meters, width 1.5 meters to provide enough stable fresh air for breathing to prevent the invasion of dirty flue gas, flee for the personnel and provide a clean air passageway fast.
Description
Technical Field
The utility model belongs to the technical field of the dark hole conflagration safety protection technique and specifically relates to a high density dark hole pedestrian passageway conflagration protection system is related to.
Background
Along with the development and progress of modern material civilization, the construction of urban subways, the increase of urban underground pedestrian passageways, natural mountainous water and natural rock caves in tourist attractions, various manually-excavated industrial storage underground passageways and the like are increased day by day, the hidden caves are used as both use spaces and traffic spaces, but have no natural lighting and ventilation, have no characteristics of natural ventilation and smoke exhaust of ground buildings, and once a fire disaster occurs, smoke with limited smoke cabin space is easy to diffuse, so that the smoke suction risk of people is increased, and casualties can be caused in serious cases. The subway tunnel and the highway tunnel are separated by a distance, and two holes of the fire door which is transversely communicated are used for escaping for standby in an accident safety area. However, a long-distance single hole is always a blind area for research, and no reference can be widely used.
Disclosure of Invention
In order to solve the problem, the utility model provides a can provide clean air's high density dark hole pedestrian passageway fire protection system specifically can take following technical scheme:
high density dark hole pedestrian passageway fire protection system, include
The air supply pipe is provided with an air supply main pipe which is arranged at the top of the blind hole along the longitudinal direction, a plurality of air supply branch pipes which extend downwards to one side of the blind hole are arranged on the air supply main pipe at intervals, and the air supply branch pipes are connected with the horizontal air outlet;
the air distribution component is arranged at the end part of the horizontal air outlet and comprises
The energy dissipation air distributor is provided with an arc air supply surface which forms an included angle of 30 degrees with the top surface of the horizontal air outlet, the arc air supply surface is provided with a first air supply outlet, a second air supply outlet, a third air supply outlet and a fourth air supply outlet which are arranged in rows, and the first air supply outlet, the second air supply outlet, the third air supply outlet and the fourth air supply outlet are sequentially arranged from top to bottom;
the attached air distributor is arranged below the arc air supply surface and is provided with a fourth air supply outlet which is vertically downward;
the smoke exhaust pipe is longitudinally arranged at the top of the blind hole and is provided with a plurality of smoke exhaust ports arranged at intervals;
wherein, through the combined action of the air exhaust of the smoke exhaust port and the air supply of the air distribution assembly, a clean air safety channel flowing directionally is formed near the outlet of the air supply branch pipe.
The wind distribution components are continuously arranged along the longitudinal direction, and the distance from the top surfaces of the wind distribution components to the ground is 1.8 m; the smoke outlets are arranged at intervals along the longitudinal direction, and the distance between every two adjacent smoke outlets is 20 m.
The highest point and the lowest point of the arc air supply surface are 75mm apart;
the air supply direction of the first air supply outlet is the same as the horizontal plane, and the distance between the adjacent first air supply outlets is 3 times of the aperture of the first air supply outlet;
the air supply direction of the second air supply outlet forms an included angle of 7.5 degrees with the horizontal plane, and the distance between every two adjacent second air supply outlets is 2.5 times of the aperture of each second air supply outlet;
the air supply direction of the third air supply outlet forms an included angle of 15 degrees with the horizontal plane, and the distance between every two adjacent third air supply outlets is 2 times of the aperture of each third air supply outlet;
the air supply direction of the fourth air supply outlet forms an included angle of 22.5 degrees with the horizontal plane, and the distance between every two adjacent fourth air supply outlets is 1.5 times of the aperture of the fourth air supply outlet.
And a pressure equalizing pipe is arranged in the fourth air supply outlet.
The width of the clean air safe channel is 1.2-1.8 m.
The blast pipe is coated with a heat insulating layer.
The air supply main pipe is connected with the air feeder, the smoke exhaust pipe is connected with the smoke exhaust fan, and the air feeder and the smoke exhaust fan are both arranged in the fan room.
The utility model provides a high density dark hole pedestrian passageway fire protection system, simple structure, the cloth wind is reasonable, the construction of being convenient for, low investment can form the safe space that has relative clean air in the long and narrow region of dark hole one side height 1.8 meters, width 1.5 meters, provides enough stable fresh air for breathing to prevent the invasion of dirty flue gas, provide a clean air passageway for the personnel flee for fast.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is an enlarged view of a portion B of fig. 2.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
As shown in FIGS. 1-3, high density blind hole pedestrian passageway fire protection system, including air supply mechanism and mechanism of discharging fume, air supply mechanism comprises forced draught blower, governing valve, the automatically controlled valve of air supply, the blast pipe and the cloth wind subassembly that the cladding has the rock wool heat insulation layer, mechanism of discharging fume comprises smoke exhaust fan, the automatically controlled valve of discharging fume, the pipe and the exhaust port of discharging fume. Wherein, the smoke exhaust fan is two, uses one under the normal operating mode, and two are opened fully during accident situation. The air blower and the smoke exhaust fan are both arranged in the fan room.
The blast pipe includes that the air supply is responsible for 1.1 and air supply branch pipe 1.2, and the air supply is responsible for 1.1 and is installed in the furred ceiling layer at the hidden tunnel top along vertically, and air supply branch pipe 1.2 is many, and the interval setting is responsible for on 1.1 and follow one side downwardly extending of hidden tunnel in the air supply, and every air supply branch pipe 1.2 all links to each other with horizontal air outlet 1.3, and every horizontal air outlet 1.3 all links to each other with a cloth wind subassembly, and the cloth wind subassembly sets up along the vertical continuation of hidden tunnel.
The air distribution components have the same structure and respectively comprise an energy dissipation air distributor and an attached air distributor. Specifically, the outlet end of the horizontal air outlet 1.3 is of a rectangular structure, and the top surface of the outlet is 1.8m away from the ground. The arc air supply surface 2.1 of the energy dissipation air distributor is connected with the upper edge of the rectangular structure, the arc air supply surface 2.1 is an arc surface which forms an included angle of 30 degrees with the top surface of the horizontal air outlet 1.3, and the highest point and the lowest point of the arc surface are 75mm apart. The arc air supply surface 2.1 is provided with a first air supply outlet 2.2, a second air supply outlet 2.3, a third air supply outlet 2.4 and a fourth air supply outlet 2.5 which are arranged in rows, and the first air supply outlet 2.2, the second air supply outlet 2.3, the third air supply outlet 2.4 and the fourth air supply outlet 2.5 are sequentially arranged from top to bottom. The air supply direction of the first air supply outlet is the same as the horizontal plane, the distance between the adjacent first air supply outlets is 3 times of the aperture of the first air supply outlet, and the air supply speed is 0.3 m/s; the air supply direction of the second air supply outlet forms an included angle of 7.5 degrees with the horizontal plane, the distance between every two adjacent second air supply outlets is 2.5 times of the aperture of the second air supply outlet, and the air supply speed is 0.5 m/s; the air supply direction of the third air supply outlet forms an included angle of 15 degrees with the horizontal plane, the distance between every two adjacent third air supply outlets is 2 times of the aperture of each third air supply outlet, and the air supply speed is 0.7 m/s; the air supply direction of the fourth air supply outlet forms an included angle of 22.5 degrees with the horizontal plane, the distance between every two adjacent fourth air supply outlets is 1.5 times of the aperture of the fourth air supply outlet, and the air supply speed is 0.9 m/s.
The attached air distributor is positioned below the arc air supply surface 2.1 and is provided with a fifth air supply outlet 2.6 which is vertically downward and internally provided with a pressure equalizing pipe 2.7, and the air supply speed of the fifth air supply outlet 2.6 is 1 m/s.
Through the air supply of the first air supply opening 2.2, the second air supply opening 2.3, the third air supply opening 2.4, the fourth air supply opening 2.5 and the fifth air supply opening 2.6, the surrounding area can be prevented from being disturbed by outside dirty air, and a relatively stable positive pressure air supply area is formed.
The smoke exhaust pipes 3.1 are longitudinally arranged in the suspended ceiling layer at the top of the hidden hole, and smoke exhaust ports 3.2 are arranged on the smoke exhaust pipes every 20 m. Under the action of the smoke exhaust fan, a large negative pressure is formed near the smoke exhaust port 3.2, and smoke around the smoke exhaust port is absorbed into the smoke exhaust port and is rapidly exhausted out of the hidden hole.
Through the combined action of air supply of the air distribution assembly and air exhaust of the exhaust port, a clean air safety channel flowing directionally can be formed near the air supply port of the air distribution assembly, the width of the clean air safety channel is 1.2-1.8m, and a relatively clean breathing area can be provided for evacuation escape personnel in a dark hole under an accident state.
The air supply frequencies of the first air supply outlet 2.2, the second air supply outlet 2.3, the third air supply outlet 2.4, the fourth air supply outlet 2.5 and the fifth air supply outlet 2.6 are all 0.6 times/minute, and the flow ratio of the total air supply amount of the first air supply outlet 2.2, the second air supply outlet 2.3, the third air supply outlet 2.4 and the fourth air supply outlet 2.5 to the fifth air supply outlet 2.6 is 1: 4. The ratio of the total air supply amount of the first air supply outlet 2.2, the second air supply outlet 2.3, the third air supply outlet 2.4, the fourth air supply outlet 2.5 and the fifth air supply outlet 2.6 to the smoke discharge amount of the corresponding smoke discharge outlet 3.2 is 55: 100.
The working principle of the utility model is as follows:
under the action of a blower, fresh air outside the tunnel is distributed to each energy dissipation air distributor and each attached air distributor, a space with the height of 1.8m and the width of 1.5 m on one side rock wall of the whole hidden tunnel forms a clean and fresh flowing air river, the air distributors are in a structural form of stepped speed reduction from inside to outside, entrainment of dirty and turbid air outside the region is avoided, meanwhile, continuous fresh air supplement can be ensured within a certain air supply distance, the air river is further stabilized against the invasion of smoke outside the region, and an invisible isolation zone is formed; meanwhile, under the action of a smoke exhaust fan, a negative pressure area is arranged around each smoke exhaust port 3.2, the balanced positive pressure air supply area at the lower part of the hidden tunnel is matched with the airflow organization of the negative pressure area at the upper part of the side of the hidden tunnel, the effect of preventing smoke from diffusing to a personnel activity area can be achieved, and the organization layout structure can control the smoke at an accident point within the range of 20 meters no matter where a fire source is located in the tunnel.
Compared with the prior art, high density blind hole pedestrian passageway fire protection system have following advantage:
1. outside the smoke outlet and the ignition source, micro-positive pressure air supply sections are formed, and as long as the smoke outlet escapes to the direction of the non-ignition source, windward sides are formed to facilitate the breathing and escape of people;
2. the energy dissipation wind distributor and the attached wind distributor are continuously wrapped and covered along the longitudinal hole wall of the hidden hole to form a clean air channel to help the escape personnel to have clean breathing air;
3. the two smoke exhaust fans are arranged, one fan is used for exhausting air under normal working conditions, all fans are put into operation according to an alarm instruction during an accident, smoke exhaust does not have lag time, time is won for evacuation of personnel, the smoke diffusion area is reduced, the volume of a smoke storage bin is reduced, and the excavation earth volume of a cavern is saved;
4. the protection system is normally used for uniformly supplying air and exhausting air as a dark hole at ordinary times, and the sanitation and safety requirements of tourists are met.
It should be noted that in the description of the present invention, terms of orientation or positional relationship such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Claims (7)
1. The utility model provides a high density dark hole pedestrian passageway fire protection system which characterized in that: comprises that
The air supply pipe is provided with an air supply main pipe which is arranged at the top of the blind hole along the longitudinal direction, a plurality of air supply branch pipes which extend downwards to one side of the blind hole are arranged on the air supply main pipe at intervals, and the air supply branch pipes are connected with the horizontal air outlet;
the air distribution component is arranged at the end part of the horizontal air outlet and comprises
The energy dissipation air distributor is provided with an arc air supply surface which forms an included angle of 30 degrees with the top surface of the horizontal air outlet, the arc air supply surface is provided with a first air supply outlet, a second air supply outlet, a third air supply outlet and a fourth air supply outlet which are arranged in rows, and the first air supply outlet, the second air supply outlet, the third air supply outlet and the fourth air supply outlet are sequentially arranged from top to bottom;
the attached air distributor is arranged below the arc air supply surface and is provided with a fourth air supply outlet which is vertically downward;
the smoke exhaust pipe is longitudinally arranged at the top of the blind hole and is provided with a plurality of smoke exhaust ports arranged at intervals;
wherein, through the combined action of the air exhaust of the smoke exhaust port and the air supply of the air distribution assembly, a clean air safety channel flowing directionally is formed near the outlet of the air supply branch pipe.
2. The high-density blind hole pedestrian passageway fire protection system of claim 1, wherein: the wind distribution components are continuously arranged along the longitudinal direction, and the distance from the top surfaces of the wind distribution components to the ground is 1.8 m; the smoke outlets are arranged at intervals along the longitudinal direction, and the distance between every two adjacent smoke outlets is 20 m.
3. The high-density blind hole pedestrian passageway fire protection system of claim 1, wherein:
the highest point and the lowest point of the arc air supply surface are 75mm apart;
the air supply direction of the first air supply outlet is the same as the horizontal plane, and the distance between the adjacent first air supply outlets is 3 times of the aperture of the first air supply outlet;
the air supply direction of the second air supply outlet forms an included angle of 7.5 degrees with the horizontal plane, and the distance between every two adjacent second air supply outlets is 2.5 times of the aperture of each second air supply outlet;
the air supply direction of the third air supply outlet forms an included angle of 15 degrees with the horizontal plane, and the distance between every two adjacent third air supply outlets is 2 times of the aperture of each third air supply outlet;
the air supply direction of the fourth air supply outlet forms an included angle of 22.5 degrees with the horizontal plane, and the distance between every two adjacent fourth air supply outlets is 1.5 times of the aperture of the fourth air supply outlet.
4. The high-density blind hole pedestrian passageway fire protection system of claim 1, wherein: and a pressure equalizing pipe is arranged in the fourth air supply outlet.
5. The high-density blind hole pedestrian passageway fire protection system of claim 1, wherein: the width of the clean air safe channel is 1.2-1.8 m.
6. The high-density blind hole pedestrian passageway fire protection system of claim 1, wherein: the blast pipe is coated with a heat insulating layer.
7. The high-density blind hole pedestrian passageway fire protection system of claim 1, wherein: the air supply main pipe is connected with the air feeder, the smoke exhaust pipe is connected with the smoke exhaust fan, and the air feeder and the smoke exhaust fan are both arranged in the fan room.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022623019.5U CN213454053U (en) | 2020-11-13 | 2020-11-13 | High-density hidden-hole pedestrian passageway fire protection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022623019.5U CN213454053U (en) | 2020-11-13 | 2020-11-13 | High-density hidden-hole pedestrian passageway fire protection system |
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| CN213454053U true CN213454053U (en) | 2021-06-15 |
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| CN202022623019.5U Active CN213454053U (en) | 2020-11-13 | 2020-11-13 | High-density hidden-hole pedestrian passageway fire protection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197390A (en) * | 2020-11-13 | 2021-01-08 | 黄河勘测规划设计研究院有限公司 | High-density hidden-hole pedestrian passageway fire protection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197390A (en) * | 2020-11-13 | 2021-01-08 | 黄河勘测规划设计研究院有限公司 | High-density hidden-hole pedestrian passageway fire protection system |
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