CN113251534A - Scissor stair pressurization air supply system for fire evacuation of subway station - Google Patents
Scissor stair pressurization air supply system for fire evacuation of subway station Download PDFInfo
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- CN113251534A CN113251534A CN202110563498.2A CN202110563498A CN113251534A CN 113251534 A CN113251534 A CN 113251534A CN 202110563498 A CN202110563498 A CN 202110563498A CN 113251534 A CN113251534 A CN 113251534A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
- E04B1/942—Building elements specially adapted therefor slab-shaped
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/04—Air-ducts or air channels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
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- Combustion & Propulsion (AREA)
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- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
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- Environmental & Geological Engineering (AREA)
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- Emergency Lowering Means (AREA)
Abstract
The invention relates to a scissors stair pressurized air supply system for fire evacuation of a subway station, which comprises a subway station platform layer, a subway station hall layer, scissors stairs, a pressurized air supply pipe well and a plurality of pressurized air supplies; the pressurized air supply pipe is internally provided with a plurality of vertical metal pipelines connected with a pressurized air supply machine, and the vertical metal pipelines are used for independently pressurizing and supplying air to two staircases of the scissors staircases, a platform staircase front chamber and a station hall staircase front chamber respectively so as to ensure that the scissors staircases and the station hall staircases can keep indoor positive pressure when a fire disaster happens. Aiming at the problems of limited space of an underground station and the existing fire-fighting evacuation design, the invention provides a novel high-fall underground station scissor stair pressurized air supply system by utilizing the characteristics of mutual overlapping of scissor stairs, small number of front chambers and small air volume of the underground station under the condition of meeting the functional design, thereby optimizing the ventilation design, further ensuring the fire-fighting safety and reducing the civil engineering scale of the underground station.
Description
Technical Field
The invention relates to the field of subway station fire control, in particular to a scissor stair pressurized air supply system for subway station fire evacuation, which can effectively prevent smoke from entering the interior of a stair.
Background
Along with the continuous development of urban rail transit, urban underground space is increasingly tense, and scissors stairs with higher underground space utilization rate have higher application prospect in subway stations. However, the space of the scissor stairwell arranged inside the subway station is narrow, and the space of the traditional ventilation disaster prevention air port is limited, so that the popularization and the application of the scissor stairwell in the subway station are restricted.
On the basis, the invention provides a scissors stair pressurized air supply system for fire evacuation of a subway station, which combines the structural characteristics of scissors stairs, fully utilizes the transverse space of the scissors stairs, reasonably arranges an independent pressurized air supply system, and can effectively reduce the pressurized air supply quantity required by the stairs and reduce the energy consumption of the system on the premise of meeting the fire fighting function of the stairs; meanwhile, the civil scale of the staircase can be reduced, and the engineering investment is saved.
Disclosure of Invention
The invention provides a scissor stair pressurized air supply system for a subway station, which aims at the problems that the space between scissor stairs in the subway station is narrow, the setting space of a traditional ventilation disaster-prevention air port is limited and the design difficulty of pressurized air supply in an evacuation stair is high, and is particularly suitable for solving the fire-fighting and evacuation problems of a high-fall subway station.
The technical scheme adopted by the invention for solving the technical problems is as follows: a scissor stair pressurized air supply system for fire evacuation of a subway station comprises a subway station platform layer, a subway station hall layer and a scissor stair used for connecting the subway station platform layer and the subway station hall layer;
the scissors stairs comprise a first stair and a second stair which are arranged in a superposed mode, a station hall stair front chamber is arranged on the subway station hall layer, a station stair front chamber is arranged on the subway station platform layer, and the station hall stair front chamber and the station stair front chamber respectively comprise a first stair front chamber and a second stair front chamber;
a pressurized air supply pipe well is arranged on one side of the scissors stair, and a first vertical metal air pipe, a second vertical metal air pipe, a third vertical metal air pipe and a fourth vertical metal air pipe are respectively arranged in the pressurized air supply pipe well; wherein: the first vertical metal air pipe is connected with a first pressurizing air feeder, and the first pressurizing air feeder supplies air to the interior of the first stair in a pressurizing way through the first vertical metal air pipe; the second vertical metal air pipe is connected with a second pressurizing air feeder, and the second pressurizing air feeder supplies air to the inside of the second stair in a pressurizing way through the second vertical metal air pipe; the third vertical metal air pipe is connected with a third pressurizing air feeder, and the third pressurizing air feeder supplies air to the first stair front chamber of the subway station hall layer and the first stair front chamber of the station platform layer in a pressurizing way through the third vertical metal air pipe; the fourth vertical metal air pipe is connected with a fourth pressurizing air feeder, and the fourth pressurizing air feeder supplies air to the second stair front chambers of the subway station hall layer and the subway station platform layer in a pressurizing manner through the fourth vertical metal air pipe;
a plurality of pressure release valves are arranged on the side walls of the station hall stair front chamber and the station stair front chamber; the plurality of pressure release valves are respectively used for outputting air flows in the first stair staircase room and the second stair room to the station hall stair front room and the platform stair front room, and outputting air flows in the station hall stair front room and the platform stair front room to a public area.
In the above scheme, the air pressure in the first stair and the second stair and the air pressure in the station hall stair front room and the station stair front room all need to meet the design requirements, and the specific requirements are as follows: the pressure in the scissors stair does not exceed 50Pa, and the pressure in the station hall and the pressure in the room in front of the platform stair does not exceed 30 Pa.
Furthermore, first normally closed air ports are respectively arranged on first stair front chambers of the subway station hall layer and the station platform layer, and the first normally closed air ports are connected with the third vertical metal air pipe through a corridor air pipe; and second normally closed air ports are respectively arranged on second stair front chambers of the subway station hall layer and the station platform layer and are connected with the fourth vertical metal air pipe through a corridor air pipe.
Preferably, the outer side of the corridor air pipe is coated with a fireproof plate.
Furthermore, a first stair normally-open air port is arranged on an interlayer of a wall body on one side of the first stair and is connected with a first vertical metal air pipe arranged in the pressurized air supply pipe well through a pipeline; a second stair normally-open air port is arranged on an interlayer of a wall body on one side of the second stair and is connected with a second vertical metal air pipe arranged in the pressurized air supply pipe well through a pipeline; a plurality of first stair normally open wind gap and a plurality of second stair normally open wind gap homonymy sets up.
Preferably, the height between the first and second elevator normally open air ports and the floor platform is set to be 0.5 m.
Preferably, the first, second, third, and fourth forced draft fans are provided in a dedicated forced draft machine room.
Preferably, the scissors stair pressurized air supply system further comprises a plurality of manual air valves and 70 ℃ fire valves.
Compared with the prior art, the invention has the following advantages and effects:
1. the scissors stair pressurized air supply system for subway station fire evacuation is characterized in that scissors stairs which are mutually overlapped are arranged between a station hall layer and a station platform layer of a subway station to serve as a fire evacuation channel, a pressurized air supply pipe well is arranged in a reserved space on one side of each scissors stair, and four independent pressurized air supply metal pipelines are arranged in each pipe well and are used for respectively pressurizing and supplying air to two staircases of each scissors stair and front stairs in the station platform layer and the station hall layer; simultaneously through set up a plurality of relief valves on station floor and station hall intraformational stair antechamber side wall or the fire door of standing, in order to ensure that the air current in the scissors staircase can be to station hall stair antechamber and platform stair antechamber output, the indoor air current of station hall stair antechamber and platform stair antechamber can be to public district output, in order to avoid the conflagration to take place, inside flue gas air current gets into scissors stair and stair antechamber, then for under the conflagration operating mode, subway station inside personnel's safety escape provides the guarantee.
2. In the scissor stair pressurized air supply system for subway station fire evacuation, the scissor stairs are mutually overlapped, the number of front chambers of the subway station stairs is small, and the air volume is small, so that the problem of fire evacuation in the subway station with limited underground space can be effectively solved; meanwhile, the pressurization air supply system which is correspondingly matched with the pressurization air supply system is reasonable in design, small in required pressurization air supply air quantity, and has the advantage of energy saving in operation.
3. According to the scissors stair pressurized air supply system for subway station fire evacuation, on the premise that the scissor stair fire-fighting function is met, under the fire working condition, the normally closed air ports of the station hall and the platform stair front chamber are opened, the design and calculation of pressurized air supply of the station stair front chamber do not need to consider the air leakage amount of a door seam and the air leakage amount of an unopened normally closed air supply valve, the pressurized air supply amount required by a staircase can be effectively reduced, and the energy consumption of the system is reduced.
4. According to the invention, according to the structural characteristics of the scissor stairs of the subway station, the transverse space of the scissor stairs is fully utilized, the independent pressurized air supply pipe well is reasonably arranged, the civil construction scale of the staircase is effectively reduced on the premise of meeting the design function, and the engineering investment is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic plan view of a station hall layer in a scissor stair pressurized air supply system for fire evacuation in a subway station according to an embodiment of the present invention.
Fig. 2 is a schematic plan view of a standard floor of a scissors stair according to an embodiment of the invention.
Fig. 3 is another schematic plan view of the standard stairway of the scissors according to the embodiment of the invention.
Fig. 4 is a longitudinal section view of a scissors stair of a subway station according to an embodiment of the present invention.
Fig. 5 is a schematic plan view of a platform layer in the scissors stair pressurized air supply system for fire evacuation in a subway station according to the embodiment of the present invention.
Description of reference numerals: 1. a first pressure blower; 2. a second booster fan; 3. a third booster fan; 4. a fourth booster fan; 5. a manual air valve; 6. a 70 ℃ fire damper; 7. a pressure relief valve; 8. a first normally closed tuyere; 9. a second normally closed tuyere; 10. a fire-proof plate; 11. a vertical metal air duct; 12. a first staircase; 13. a second staircase; 14. a first stair normally open air port; 15. a second stair normally open air port; 16. pressurizing the air supply pipe well; 17. a station hall stair front room; 18. platform stair pre-chambers.
Detailed Description
The present invention will be described in further detail with reference to examples, which are illustrative of the present invention and are not to be construed as being limited thereto.
Example 1: as shown in fig. 1 to 5, a scissor stair pressurized air supply system for fire evacuation of a subway station comprises a subway station hall layer, a subway station platform layer and a scissor stair for connecting the subway station platform layer and the subway station hall layer; wherein:
the scissor stairs comprise a first stair 12 and a second stair 13 which are arranged in a superposed mode, a station hall stair front chamber 17 is arranged on a subway station layer, a station stair front chamber 18 is arranged on a subway station layer, and the station hall stair front chamber 17 and the station stair front chamber 18 respectively comprise a first stair front chamber and a second stair front chamber;
scissors stair one side is equipped with pressurization blast pipe well 16, be equipped with a plurality of vertical metal tuber pipes 11 in the pressurization blast pipe well 16, be first vertical metal tuber pipe, the vertical metal tuber pipe of second, the vertical metal tuber pipe of third and the vertical metal tuber pipe of fourth respectively, wherein:
the first vertical metal air pipe is connected with a first pressurizing air feeder 1, and the first pressurizing air feeder 1 supplies air to the interior of the first stair 12 in a pressurizing way through the first vertical metal air pipe;
the second vertical metal air pipe is connected with a second pressurizing air feeder 2, and the second pressurizing air feeder 2 supplies air to the inside of the second stair 13 in a pressurizing way through the second vertical metal air pipe;
the third vertical metal air pipe is connected with a third pressurizing air feeder 3, and the third pressurizing air feeder 3 supplies air to the first stair front chamber of the subway station hall layer and the first stair front chamber of the station platform layer in a pressurizing way through the third vertical metal air pipe;
the fourth vertical metal air pipe is connected with a fourth pressurizing air feeder 4, and the fourth pressurizing air feeder 4 supplies air to the second stair front chambers of the subway station hall layer and the subway platform layer in a pressurizing manner through the fourth vertical metal air pipe;
a plurality of pressure release valves 7 are arranged on the side walls or fire doors of the station hall stair front chamber 17 and the station stair front chamber 18; the pressure release valves 7 are respectively used for outputting the airflows in the first stair 12 and the second stair 13 to the station hall stair front chamber 17 and the platform stair front chamber 18 and outputting the airflows in the station hall stair front chamber 17 and the platform stair front chamber 18 to a public area; finally, the air pressure in the first stair 12 and the second stair 13, the station hall stair front room 17 and the station stair front room 18 meet the design requirements, specifically: the air pressure in the scissors stair does not exceed 50Pa, and the pressure in the station hall and the pressure in the room in front of the platform stair does not exceed 30 Pa.
Specifically, as shown in fig. 1 and 4, in this embodiment 1, first normally closed air ports 8 are respectively arranged in first stairway front chambers of the subway station hall layer and the station platform layer, and the first normally closed air ports 8 are connected with the third vertical metal air pipes through corridor air pipes; second normally closed air ports 9 are respectively arranged on second stair front chambers of the subway station hall layer and the station platform layer, and the second normally closed air ports 9 are connected with the fourth vertical metal air pipe through a corridor air pipe; the outer side of the corridor air pipe passing through the staircase is coated with a fireproof plate 10 with the fireproof limit not lower than 2 h.
Further, as shown in fig. 2, 3, and 4, in this embodiment 1, a first stair normally open air opening 14 is disposed in an interlayer on a wall on one side of the first stair 12, and the first stair normally open air opening 14 is connected to a first vertical metal air duct disposed in the pressurized air supply duct well 16 through a pipeline; a second stair normally-open air opening 15 is arranged on an interlayer of a wall body on one side of the second stair 13, and the second stair normally-open air opening 15 is connected with a second vertical metal air pipe arranged in a pressurized air supply pipe well 16 through a pipeline; as shown in fig. 4, the plurality of first stair normally open air openings 14 and the plurality of second stair normally open air openings 15 are arranged on the same side; preferably, the height between the first and second elevator normally open air ports 14 and 15 and the landing is set to be 0.5 m.
Example 2: as shown in fig. 1 and 5, as a preferred embodiment of example 1, the scissors stair pressurized air supply system further includes a plurality of manual air valves 5 and 70 ℃ fire prevention valves 6, the manual air valves 5 are respectively disposed at the corridor air duct, the first normally closed air opening 8 and the second normally closed air opening 9, and the 70 ℃ fire prevention valves 6 are respectively disposed at the fire prevention door side of the station hall floor or the station floor or at the first normally closed air opening 8 and the second normally closed air opening 9.
Further, in the embodiments 1 to 2, the first pressure air blower 1, the second pressure air blower 2, the third pressure air blower 3 and the fourth pressure air blower 4 may be disposed in a dedicated pressure machine room to ensure that the pressure air blowers are not damaged by erosion and can be operated reliably in case of fire.
As shown in fig. 4, the scissors stair pressurized air supply system according to embodiments 1 and 2 of the present invention is particularly suitable for a subway station with a large height difference between a station hall layer and a station platform layer, and utilizes the characteristics of overlapping of scissors stairs and a small number of front stairs of the subway station, so as to design a pressurized air supply system capable of effectively ensuring positive pressure inside scissors stairs and positive pressure inside a station hall layer and a front stairs of the station platform layer of the subway station, thereby overcoming the problems of limited underground space and high design difficulty of pressurized air supply of the existing subway station, and providing possibility for safe escape of personnel inside the subway when a fire occurs.
In addition, it should be noted that the specific embodiments described in the present specification may differ in the shape of the components, the names of the components, and the like. All equivalent or simple changes of the structure, the characteristics and the principle of the invention which are described in the patent conception of the invention are included in the protection scope of the patent of the invention. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (8)
1. A scissor stair pressurized air supply system for fire evacuation of a subway station is characterized by comprising a subway station platform layer, a subway station hall layer and scissor stairs for connecting the subway station platform layer and the subway station hall layer;
the scissors stairs comprise a first stair and a second stair which are arranged in a superposed mode, a station hall stair front chamber is arranged on the subway station hall layer, a station stair front chamber is arranged on the subway station platform layer, and the station hall stair front chamber and the station stair front chamber respectively comprise a first stair front chamber and a second stair front chamber;
a pressurized air supply pipe well is arranged on one side of the scissors stair, and a first vertical metal air pipe, a second vertical metal air pipe, a third vertical metal air pipe and a fourth vertical metal air pipe are respectively arranged in the pressurized air supply pipe well; wherein: the first vertical metal air pipe is connected with a first pressurizing air feeder, and the first pressurizing air feeder supplies air to the interior of the first stair in a pressurizing way through the first vertical metal air pipe; the second vertical metal air pipe is connected with a second pressurizing air feeder, and the second pressurizing air feeder supplies air to the inside of the second stair in a pressurizing way through the second vertical metal air pipe; the third vertical metal air pipe is connected with a third pressurizing air feeder, and the third pressurizing air feeder supplies air to the first stair front chamber of the subway station hall layer and the first stair front chamber of the station platform layer in a pressurizing way through the third vertical metal air pipe; the fourth vertical metal air pipe is connected with a fourth pressurizing air feeder, and the fourth pressurizing air feeder supplies air to the second stair front chambers of the subway station hall layer and the subway station platform layer in a pressurizing manner through the fourth vertical metal air pipe;
a plurality of pressure release valves are arranged on the side walls of the station hall stair front chamber and the station stair front chamber or the fireproof door; the plurality of pressure release valves are respectively used for outputting the air flows in the first stair and the second stair to the station hall stair front chamber and the platform stair front chamber, and outputting the air flows in the station hall stair front chamber and the platform stair front chamber to a public area.
2. The scissor stair pressurizing and air supplying system for fire evacuation at a subway station as claimed in claim 1, wherein air pressure in the first stair and the second stair is less than or equal to 50 Pa; the air pressure in the station hall stair front chamber and the station stair front chamber is less than or equal to 30 Pa.
3. The scissor stair pressurized air supply system for fire evacuation in a subway station as claimed in claim 1, wherein the first stair front chambers of the subway station hall layer and the platform layer are respectively provided with a first normally closed air port, and the first normally closed air port is connected with the third vertical metal air pipe through a corridor air pipe; and second normally closed air ports are respectively arranged on second stair front chambers of the subway station hall layer and the station platform layer and are connected with the fourth vertical metal air pipe through a corridor air pipe.
4. The scissors stair pressurized air supply system for fire evacuation at a subway station as claimed in claim 3, wherein a fire-proof plate is coated outside said corridor air duct.
5. The scissor stair pressurized air supply system for fire evacuation in a subway station as claimed in claim 1, wherein a first stair normally open air port is arranged in an interlayer on a wall body on one side of the first stair, and the first stair normally open air port is connected with a first vertical metal air pipe arranged in the pressurized air supply pipe well through a pipeline; a second stair normally-open air port is arranged on an interlayer of a wall body on one side of the second stair and is connected with a second vertical metal air pipe arranged in the pressurized air supply pipe well through a pipeline; a plurality of first stair normally open wind gap and a plurality of second stair normally open wind gap homonymy sets up.
6. The scissor stair pressurized air supply system for fire evacuation at subway stations as claimed in claim 5, wherein the height between the first and second normally open air openings and the floor platform is set to 0.5 m.
7. The scissors stair pressurized air blowing system for fire evacuation at a subway station as claimed in claim 1, wherein said first, second, third and fourth pressurized air blowers are disposed in a dedicated pressurized machine room.
8. The scissors stair pressurized air supply system for subway station fire evacuation as claimed in claim 1, wherein said scissors stair pressurized air supply system further comprises a plurality of manual air valves and 70 ℃ fire valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110563498.2A CN113251534A (en) | 2021-05-21 | 2021-05-21 | Scissor stair pressurization air supply system for fire evacuation of subway station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110563498.2A CN113251534A (en) | 2021-05-21 | 2021-05-21 | Scissor stair pressurization air supply system for fire evacuation of subway station |
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| Publication Number | Publication Date |
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| CN113251534A true CN113251534A (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110563498.2A Pending CN113251534A (en) | 2021-05-21 | 2021-05-21 | Scissor stair pressurization air supply system for fire evacuation of subway station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135963A (en) * | 2021-11-18 | 2022-03-04 | 郑州地铁集团有限公司 | New wind channel and urgent sparse mouthful co-construction structure for subway |
| CN114353232A (en) * | 2021-12-31 | 2022-04-15 | 广州地铁设计研究院股份有限公司 | Pressurized air supply system and pressure relief method for staircase |
-
2021
- 2021-05-21 CN CN202110563498.2A patent/CN113251534A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135963A (en) * | 2021-11-18 | 2022-03-04 | 郑州地铁集团有限公司 | New wind channel and urgent sparse mouthful co-construction structure for subway |
| CN114353232A (en) * | 2021-12-31 | 2022-04-15 | 广州地铁设计研究院股份有限公司 | Pressurized air supply system and pressure relief method for staircase |
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