Subway evacuation staircase passage

Abstract

The present application discloses a subway evacuation staircase passage, which includes a staircase, a blower room and a blowing device. Among them, the staircase is used to connect the inside and outside of the subway station. The staircase has stairs and a top platform. The top platform is connected to the top steps of the stairs or matches the height of the top steps of the stairs. There is a remaining space formed within the evacuation height above the top platform. The blower room is arranged in the remaining space, and at least part of the blowing device is arranged in the blower room, and is used to pressurize and supply air to the inside of the staircase from outside the staircase. By arranging the blower room in the remaining space above the top platform, the height of the staircase is reduced, the floor area used when arranging the blower room separately on the ground is reduced, and the construction cost is saved.

Description

Technical Field

[0001] This application relates to the field of fire protection technology, and more specifically, to a subway evacuation staircase passageway. Background Art

[0002] According to the requirements of the new fire protection codes "Code for Fire Protection Design of Subways" GB 51298-2018 and "Technical Standard for Building Smoke Control and Exhaust Systems" GB 51251-2017 (referred to as the "Fire Code" and the "Smoke Code" respectively), the pressurization fan should be installed in an independent machine room. Before the promulgation of the "Fire Code" and the "Smoke Code", the pressurization fans on subway lines were often directly hoisted inside the evacuation staircase. Due to the requirements of the "Fire Code" and the "Smoke Code" for installing the pressurization fan in an independent machine room, as Figure 11 and Figure 12 shown, two common practices are often adopted: setting the air supply machine room 2 above the top of the staircase 1 or setting the air supply machine room 2 on the ground on one side of the staircase 1. However, these two layouts of the air supply machine room result in an increase in the floor area or an increase in the height of the staircase, increasing the construction cost. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide a subway evacuation staircase passageway to reduce the construction cost of the subway evacuation staircase passageway.

[0004] To solve the above problems, the embodiments of this application provide a subway evacuation staircase passageway, including:

[0005] A staircase, used to connect the inside and outside of the subway station, having stairs and a top platform, the top platform connecting the top steps of the stairs or matching the height of the top steps of the stairs, and a remaining space being formed within the evacuation height above the top platform;

[0006] An air supply machine room, arranged within the remaining space; and

[0007] An air supply device, at least partially arranged in the air supply machine room, for pressurizing and supplying air to the inside of the staircase from outside the staircase.

[0008] Further, the staircase is a double-run staircase, and the top platform includes a first platform connected to the top steps of the stairs and a second platform connected in parallel to the first platform. The first platform connects one of the two stair segments in opposite directions of the stairs, and the second platform is located above the other of the two stair segments in opposite directions of the stairs. The air supply machine room is arranged on the second platform.

[0009] Further, the staircase is a single-run staircase, the top platform is arranged at the end of the single-run staircase, matching the height of the top steps of the stairs, and the air supply machine room is arranged on the top platform.

[0010] Furthermore, the air supply machine room includes fireproof glass, which is used to separate the air supply equipment located in the air supply machine room from the staircase.

[0011] Furthermore, the air supply machine room includes:

[0012] An access door, which is arranged on the side of the staircase close to the outside of the subway station; and / or,

[0013] A louver, which is arranged on the side of the staircase close to the outside of the subway station and is used for the air supply equipment to suck air from outside the staircase.

[0014] Furthermore, when the staircase is a double - flight staircase, the opening direction of the access door faces outside the staircase; when the staircase is a single - flight staircase, the opening direction of the access door faces inside the air supply machine room.

[0015] Furthermore, the air supply equipment includes:

[0016] A pressurization fan, which is hoisted in the air supply machine room; and

[0017] An air supply assembly, which is connected to the pressurization fan, and at least part of the air supply assembly is exposed outside the staircase to supply air to the staircase.

[0018] Furthermore, the air supply machine room has a pipe - passing hole, and the air supply assembly includes:

[0019] An air supply pipe, one end of which is connected to the pressurization fan, and the other end passes through the pipe - passing hole and is exposed outside the staircase; and

[0020] A control valve, which is arranged in the air supply pipe to control the opening and closing of the air supply pipe or the air flow direction in the air supply pipe.

[0021] Furthermore, the control valve includes:

[0022] A check valve, which is used to control the air flow direction in the air supply pipe to supply air unidirectionally from outside the staircase to inside the staircase; and

[0023] A fire damper, which is located on the side of the check valve away from the pressurization fan.

[0024] Furthermore, the air supply equipment also includes fireproof caulking material, which is used to seal the gap between the air supply assembly passing through the pipe - passing hole.

[0025] The subway evacuation staircase passage provided by the embodiment of the present application includes a staircase, a blower room, and a blowing device. The staircase has a staircase and a top platform. A remaining space is formed within the evacuation height above the top platform. The blower room is arranged within the remaining space, and at least part of the blowing device is arranged within the blower room. The blowing device is used to pressurize and supply air to the staircase from outside the staircase. By arranging the blower room in the remaining space above the top platform of the staircase, the height of the staircase is reduced, the floor area used when arranging the blower room separately on the ground is decreased, and the construction cost is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 FIG. 6 is a three-dimensional schematic diagram of a subway evacuation staircase passage provided by the embodiment of the present application, where the staircase is a double-run staircase;

[0027] Figure 2 FIG. 10 is a three-dimensional schematic diagram of a subway evacuation staircase passage provided by the embodiment of the present application, where the staircase is a single-run staircase;

[0028] Figure 3 FIG. 14 is a structural schematic diagram of a subway evacuation staircase passage provided by the embodiment of the present application, where the staircase is a double-run staircase;

[0029] Figure 4 FIG. Figure 3 FIG. 20 is a structural schematic diagram of a subway evacuation staircase passage from another perspective in FIG. 14;

[0030] Figure 5 FIG. Figure 3 FIG. 26 is a top view of a subway evacuation staircase passage in FIG. 14;

[0031] Figure 6 FIG. Figure 3 FIG. 32 is a right view of a subway evacuation staircase passage in FIG. 14;

[0032] Figure 7 FIG. 36 is a structural schematic diagram of a subway evacuation staircase passage provided by the embodiment of the present application, where the staircase is a single-run staircase;

[0033] Figure 8 FIG. Figure 7 FIG. 42 is a structural schematic diagram of a subway evacuation staircase passage from another perspective in FIG. 36;

[0034] Figure 9 FIG. Figure 7 FIG. 48 is a top view of a subway evacuation staircase passage in FIG. 36;

[0035] Figure 10 FIG. Figure 7 FIG. 54 is a right view of a subway evacuation staircase passage in FIG. 36;

[0036] Figure 11It is a schematic structural diagram of a subway evacuation staircase passage in the prior art, where the air supply machine room is located above the top of the staircase; and

[0037] Figure 12 It is a schematic structural diagram of another subway evacuation staircase passage in the prior art, where the air supply machine room is located below the side ground of the staircase.

[0038] Explanation of reference numerals:

[0039] 1 - Staircase, 1a - Remaining space, 1c - Underground part, 1d - Wall, 1e - Roof, 1f - Evacuation door, 11 - Stairs, 11a - Top steps, 11b - Guardrail, 11c - Landing, 111 - First flight, 112 - Second flight, 12 - Top platform, 121 - First platform, 122 - Second platform;

[0040] 2 - Air supply machine room, 2a - Pipe passing hole, 21 - Fireproof glass, 22 - Inspection door, 23 - Louver;

[0041] 3 - Air supply equipment, 31 - Pressurization fan, 32 - Air supply assembly, 321 - Air supply pipe, 322 - Control valve, 322a - Check valve, 322b - Fire damper, 324 - Flexible air duct for fan, 325 - Square - round transition piece, 33 - Fireproof caulking material;

[0042] m - Outdoor ground level. Detailed implementation manners

[0043] The following describes in detail the specific implementation manners of the present application in conjunction with the drawings.

[0044] It should be noted that, without conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other. The detailed description in the specific implementation manners should be understood as an explanatory illustration of the purpose of the present application and should not be regarded as an improper limitation of the present application.

[0045] In the description of the present application, the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0046] As Figure 1 and Figure 2 shown, the embodiment of the present application provides a subway evacuation staircase passage, including a staircase 1, an air supply machine room 2, and air supply equipment 3. The staircase 1 is used to connect the inside and outside of the subway station. The staircase 1 has stairs 11 and a top platform 12, and the top platform 12 is connected to the top steps 11a of the stairs 11 (see Figure 1), the top platform 12 matches the height of the top step 11a of the staircase 11 (see Figure 2 ), a remaining space 1a is formed within the evacuation height above the top platform 12. The air supply machine room 2 is arranged within the remaining space 1a. The air supply equipment 3 is at least partially arranged within the air supply machine room 2, and the air supply equipment 3 is used to pressurize and supply air to the staircase from outside the staircase.

[0047] Specifically, the staircase 1 has a top platform 12 and a staircase 11. The staircase 11 includes a top step 11a, a guardrail 11b, and a landing 11c. The landing 11c and the top platform 12 are connected by the steps of the staircase 11. The landing 11c and the top platform 12 are used for people to stay and rest to relieve fatigue. The landing 11c and the top platform 13 are both connected to the steps of the staircase 11 to form an evacuation passage. The top platform 12 is arranged within the staircase 1 and is connected to the top step 11a of the staircase 11. When evacuating the crowd, the crowd goes from the staircase 1 through the landing 11c to the top platform 12 and walks outside the station through the evacuation door 1f.

[0048] By arranging the air supply machine room 2 within the remaining space 1a above the top platform 12 of the staircase 1, since there is no need to additionally increase the height above the staircase 1, the overall height of the subway evacuation staircase passage is reduced, or the floor area is reduced in the case where the air supply machine room 2 is arranged on the side of the staircase, saving the construction cost of the subway evacuation staircase passage.

[0049] It should be understood that the top step 11a is the highest step of the staircase 11 within the staircase 1. The height of the top platform 12 matches the height of the top step 11a. For example, the top platform 12 is arranged on the side adjacent to the evacuation door 1f within the remaining space 1a, and the height difference between the top platform 12 and the staircase 11 allows people to walk through normally without affecting the evacuation of the crowd.

[0050] In one embodiment, as Figures 3 to 6 shown, the staircase 1 is a double - flight staircase. The top platform 12 includes a first platform 121 connected to the top step 11a of the staircase 11 and a second platform 122 connected in parallel to the first platform 121. The first platform 121 is connected to one of the two opposite - direction stair segments of the staircase 11, and the second platform 122 is located above the other of the two opposite - direction stair segments of the staircase 11. The air supply machine room 2 is arranged on the second platform 122.

[0051] Specifically, the staircase 11 includes a first flight 111 and a second flight 112. The first flight 111 and the second flight 112 are in opposite directions within the staircase hall 1. For example, the crowd moves along a first direction on the first flight 111, with the height increasing. After passing through the landing 11c, the direction is changed. The crowd moves along a second direction on the second flight 112, with the height increasing. The first direction and the second direction are opposite. The crowd alternates between the first flight 111 and the second flight 112 and evacuates from inside the subway station to outside the subway station. The first platform 121 and the second platform 122 are connected in parallel to form the top platform 12. The first platform 121 is connected to one of the first flight 111 and the second flight 112 of the staircase 11. The second platform 122 is located above the other one of the first flight 111 and the second flight 112 of the staircase 11. The air supply machine room 2 is arranged on the second platform 122. For example, the first platform 121 connected to the top step 11a is connected to the first flight 111 of the staircase 11. The second platform 122 is located above the second flight 112, and the air supply machine room 2 is arranged on the second platform 122.

[0052] The air supply machine room 2 is arranged on the second platform 122. An evacuation passage is formed through the first flight 111, the second flight 112, the landing 11c, and the first platform 121, and evacuates to outside the subway station through the evacuation door 1f. Without increasing the height or floor area of the staircase hall 1, the staircase hall 1 has a smooth evacuation passage and also reduces the construction cost.

[0053] It should be understood that a double - flight staircase hall is a staircase hall provided with a first flight 111 and a second flight 112. When ascending the stairs on the first flight 111, it moves along a first direction, and when ascending the stairs on the second flight 112, it moves along a second direction. The first direction and the second direction are opposite. The arrangement of the first flight 111 and the second flight 112 in the double - flight staircase hall saves the space occupied by the staircase, enabling evacuation in a relatively small space.

[0054] In one embodiment, as Figures 7 to 10 shown, the staircase hall 1 is a single - flight staircase hall. The top platform 12 is arranged at the tail 1b of the single - flight staircase hall. The top platform 12 is matched in height with the top step 11a of the staircase 11. The air supply machine room 2 is arranged on the top platform 12.

[0055] Specifically, the single-run staircase has a staircase 11 and a landing 11c. Multiple landings 11c are connected by the steps of the staircase 11. The staircase 11 and the evacuation door 1f form an evacuation passage, and the crowd moves from the evacuation passage to outside the subway station. The evacuation door 1f is arranged on one side of the ground part of the single-run staircase. On the side opposite to the evacuation door 1f in the single-run staircase is the tail 1b of the single-run staircase. The top platform 12 is arranged on the tail 1b of the single-run staircase, and the air supply machine room 2 is arranged on the top platform 12. Since the top platform 12 is arranged on the tail 1b of the single-run staircase and the air supply machine room 2 is arranged on the top platform 12, the tail 1b of the single-run staircase is effectively utilized, reducing the space waste of the single-run staircase, thereby reducing the floor area when the air supply machine room 2 is adjacent to the single-run staircase, or the additional height when the air supply machine room 2 of the single-run staircase is arranged above the roof 1e.

[0056] It should be understood that the single-run staircase is the staircase 1 provided with the first flight 111. When going up the stairs on multiple first flights 111, one moves in the first direction, and multiple landings 11c are connected by the first flights 111. The tail 1b of the single-run staircase is the space arranged on the side opposite to the evacuation door 1f. The top platform 12 is height-matched with the top step 11a of the staircase 11. For example, the top platform 12 is at the same height as the top step 11a of the staircase 11, or there is a certain height difference between the top platform 12 and the top step 11a. It should be noted that the top platform 12 is higher than the first flight 111 of the staircase 11, meeting the fire evacuation height requirements, ensuring the height space during the crowd evacuation, and facilitating the crowd to walk and evacuate without hitting their heads.

[0057] As Figure 4 、 Figure 5 、 Figure 8 and Figure 9 shown, the air supply machine room 2 includes a fireproof glass 21, and the fireproof glass 21 is used to separate the air supply equipment 3 located in the air supply machine room 2 from the staircase 1.

[0058] Specifically, a blower room 2 is arranged on the top platform 12. According to the requirements of the "Fire Code" and the "Smoke Code" for the independent arrangement of the blower room 2, a fireproof glass 21 is used to separate the air supply equipment 3 from the staircase 1, forming an independent blower room 2. For example, a space that can accommodate the air supply equipment 3 is surrounded by fireproof glass on the periphery of the blower room 2 to separate the blower room 2 from the staircase 1. Or, one side of the blower room 2 shares one side wall 1d of the staircase 1, and the other sides around the blower room 2 are surrounded by fireproof glass 21, so that the blower room 2 is independently arranged on the top platform 12. Or, the blower room 2 is arranged at the corner of the staircase 1, both sides of the blower room 2 share both side walls 1d of the staircase 1, and the other sides of the blower room 2 are surrounded by fireproof glass 21, thereby separating it from the staircase 1. It should be understood that the fireproof glass 21 for separating the blower room can meet the fire prevention requirements of the "Fire Code" and the "Smoke Code". For example, the fireproof glass 21 uses 2h (hour) fireproof glass to meet the fire prevention requirements of the "Fire Code" and the "Smoke Code" in the staircase 1.

[0059] It should be understood that the above only gives several examples of the fireproof glass 21 surrounding the blower room. On the premise of not departing from the use of the fireproof glass 21 to separate the air supply equipment 3 from the staircase 1, the setting form of the fireproof glass 21 can match the wall 1d of the actual staircase 1. For example, if the cross-section of the staircase 1 is circular, oval, or polygonal, the form of the fireproof glass 21 surrounding it is also circular, oval, or polygonal.

[0060] In one embodiment, as Figures 5 to 6 and Figures 9 to 10 shown, the blower room 2 includes a maintenance door 22 and a louver 23. Among them, the maintenance door 22 is arranged on the side of the staircase 1 close to the outside of the subway station, and the louver 23 is arranged on the side of the staircase 1 close to the outside of the subway station. The louver 23 is used for the air supply equipment 3 to suck air from outside the staircase.

[0061] Specifically, the maintenance door 22 is arranged on the side of the stairwell 1 close to the outside of the subway station, facilitating the inspection and maintenance of the air supply equipment 3 in the air supply machine room 2. When maintaining the air supply equipment 3, for example, when replacing parts of the air supply equipment 3, the maintenance door 22 is opened, and the maintenance personnel enter the air supply machine room 2 from the maintenance door 22 to perform the operation of replacing parts. When the size of the maintenance door 22 is large, a large opening space is required. When the size of the maintenance door 22 is small, it is not conducive to the maintenance personnel entering from the maintenance door 22. Therefore, the size of the maintenance door 22 is preferably set to 0.9 m (width) × 1.2 m (height). It should be understood that the size of the maintenance door 22 can be adjusted according to the actual size of the stairwell 1. The louver 23 is arranged on the side of the stairwell 1 close to the outside of the subway station. The louver 23 is used for the air supply equipment 3 to suck air from outside the stairwell. In the case of crowd evacuation, in order to enable the stairwell 1 to obtain fresh air, the louver 23 is arranged on the side of the stairwell 1 close to the outside of the subway station. In order to make the ventilation volume of the stairwell 1 meet the requirements, the effective air passing area of the louver 23 is not less than 1 m 2 . It should be understood that the louver 23 also has a waterproof function. Through the arrangement of the louver 23, it is possible to prevent rainwater outside the station from falling into the air supply machine room 2 and damaging the air supply equipment 3.

[0062] In one embodiment, when the stairwell is a double-run stairwell, the opening direction of the maintenance door 22 faces outside the stairwell 1. When the stairwell is a single-run stairwell, the opening direction of the maintenance door 22 faces inside the air supply machine room 2.

[0063] Specifically, the air supply machine room 2 of the double-run stairwell is arranged on the top platform 12. The top platform 12 is also connected to the top step 11a of the stair 11. Since part of the space of the top platform 12 is used for evacuation, the evacuation door 1f needs to be set on the outdoor platform. The opening direction of the maintenance door 22 of the air supply machine room 2 faces outside the stairwell, and the outdoor platform of the evacuation door 1f can be borrowed, thereby saving the opening space of the maintenance door 22 of the air supply machine room 2 and leaving a relatively large layout space for the air supply equipment 3 arranged in the air supply machine room 2, facilitating the layout of the air supply equipment. The air supply machine room 2 of the single-run stairwell is arranged on the top platform 12. The evacuation door 1f needs to be set on the outdoor platform. The top platform 12 of the single-run stairwell is arranged on the side opposite to the evacuation door 1f, and the outdoor platform of the evacuation door 1f cannot be utilized. Moreover, the top platform 12 has a relatively large space. When arranging the maintenance door 22, the opening direction of the maintenance door 22 can face inside the air supply machine room 2, thereby reducing the need to separately add an outdoor platform for the maintenance door 22.

[0064] In one embodiment, the air supply equipment 3 includes a pressurized fan 31 and an air supply assembly 32. Among them, the pressurized fan 31 is hoisted in the air supply machine room 2, and the air supply assembly 32 is connected to the pressurized fan 31. At least part of the air supply assembly 32 is exposed outside the stairwell 1 to supply air to the stairwell 1.

[0065] Specifically, the pressurized air blower 31 is hoisted in the air supply machine room 2 and supplies air from outside the subway station into the station. One end of the pressurized air blower 31 is close to the louver 23, and the pressurized air blower 31 supplies air from outside the station into the station through the louver 23. The air supply assembly 32 is connected to the pressurized air blower 31. At least part of the air supply assembly 32 is exposed to the stairwell 1, and the pressurized air blower 31 supplies air to the stairwell 1 to provide sufficient fresh air for the stairwell 1. It should be understood that the air supply machine room 2 can share a stairwell roof 1e with the stairwell 1, and the pressurized air blower 31 is hoisted on the stairwell roof 1e. Or, the air supply machine room 2 has an independent roof and does not share a stairwell roof 1e with the stairwell 1, and the pressurized air blower 31 is hoisted on the roof of the air supply machine room 2.

[0066] In an embodiment, the air supply machine room 2 has a pipe passing hole 2a, and the air supply assembly 32 includes an air supply pipe 321 and a control valve 322. Among them, one end of the air supply pipe 321 is connected to the pressurized air blower 31, and the other end passes through the pipe passing hole 2a and is exposed to the stairwell 1. The control valve 322 is arranged in the air supply pipe 321 to control the opening and closing of the air supply pipe 321 or the air flow direction in the air supply pipe 321.

[0067] Specifically, the air supply pipe 321 passes through the pipe passing hole 2a on the air supply machine room 2, and part of the air supply pipe 321 is exposed to the stairwell. The air supply pipe 321 is connected to the pressurized air blower 31. The control valve 322 is arranged in the air supply pipe 321 to control the opening and closing of the air supply pipe 321 or the air flow direction of the air supply pipe 321. For example, the control valve 322 is arranged at one end of the air supply pipe 321 connected to the pressurized air blower 31. Under normal circumstances, the pressurized air blower 31 is in an unstarted state, and the control valve 322 is in a closed state. In case of a fire or other emergencies, the pressurized air blower 31 starts, and the control valve 322 opens, so that the pressurized air blower 31 is communicated with the air supply pipe 321, and fresh air is blown into the station from outside the station for the use of the evacuated crowd.

[0068] In an embodiment, the control valve 322 includes a check valve 322a and a fire damper 322b. Among them, the check valve 322a is used to control the air flow direction in the air supply pipe 321 to supply air unidirectionally from outside the stairwell 1 into the stairwell 1, and the fire damper 322b is located on the side of the check valve 322a away from the pressurized air blower 31.

[0069] Specifically, under normal circumstances, the pressurized air blower 31 is in an unstarted state, the check valve 322a is in a closed state, the fire damper 322b is in an open state, and the air supply duct 321 is not connected to the outside of the station. In case of a fire or other emergencies, the pressurized air blower 31 starts, and the check valve 322a opens under the action of the wind blown by the pressurized air blower 31. The pressurized air blower 31 sucks fresh air from outside the station and blows it into the station through the air supply duct 321 for the use of the evacuated crowd. It can be understood that in order to improve the efficiency of the pressurized air blower 31 in sucking fresh air, the louver 23 is arranged to face the air suction port of the pressurized air blower 31 to facilitate the air suction of the pressurized air blower.

[0070] In one embodiment, the air supply device 3 further includes a fireproof sealing material 33, which is used to seal the gap between the air supply assembly 32 passing through the pipe holes 2a. Specifically, the air supply assembly 32 passes through the gap between the pipe holes 2a. For example, the air supply duct 321 passes through the pipe holes 2a, and the control valve 322 is arranged in the air supply duct. The gap between the air supply duct 321 and the pipe holes 2a is sealed with the fireproof sealing material 33. It should be understood that the pipe holes 2a are holes provided on the air blower room 2 for passing through the air supply duct 321. For example, the pipe holes 2a are opened on the wall of the air blower room 2 for passing through the air supply duct 321.

[0071] To better understand the subway evacuation staircase passage of the embodiment of the present application, the situation of a fire occurring and the crowd evacuating will be further described below.

[0072] The air supply device 3 includes a pressurized air blower 31 and an air supply assembly 32. The air supply assembly 32 includes an air supply duct 321 and a control valve 322, for example, a check valve 322a and a fire damper 322b. The pressurized air blower 31 is hoisted in the air blower room 2, and the air suction port of the pressurized air blower 31 faces the louver 23 to facilitate the air suction of the pressurized air blower 31. The fan flexible joint 324, the square-to-round transition 325, the check valve 322a, and the fire damper 322b are sequentially arranged in the air supply duct 321 and are sequentially connected. The air supply duct 321 is connected to the pressurized air blower 31, and the air path of the air supply duct 321 is controlled to be closed or opened through the check valve 322a and the fire damper 322b.

[0073] When a fire occurs, the crowd moves from Staircase 11 towards Evacuation Door 1f and leaves through Evacuation Door 1f. For example, the crowd moves alternately on the first flight 111 and the second flight 112 of the double-run staircase, passes through the landing 11c, the top platform 12 and the top steps 11a, and leaves through Evacuation Door 1f. It should be noted that the top platform 12 includes a first platform 121 and a second platform 122. The second platform 122 is connected in parallel with the first platform 121. The first platform 121 is connected to the top steps 11a of Staircase 11. The crowd leaves from the top steps 11a and the first platform 121 through Evacuation Door 1f, and the air supply machine room 2 is arranged on the second platform 122. Alternatively, in a single-run staircase, the crowd moves along multiple first flights 111, passes through the landing 11c and the top steps 11a, and leaves through Evacuation Door 1f. It should be noted that the top platform 12 is arranged at the end 1b of the single-run staircase. The height between the top platform 12 and the staircase 11 below the top platform 12 allows the crowd to walk normally, and the air supply machine room 2 is arranged on the top platform 12.

[0074] The pressurizing fan 31 located in the air supply machine room 2 is started, and a part of the air supply duct 321 is exposed outside the staircase 1. The control valve 322 is opened so that fresh air is blown from outside the station into the station through the air supply duct 321. For example, the check valve 322a is opened under the action of wind when the pressurizing fan 31 is started. The pressurizing fan 31 is in communication with the air path of the air supply duct 321 to supply air to the crowd in the staircase 1.

[0075] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions required to be protected by the present application.

Claims

1. A subway evacuation staircase passage, characterized in that, Comprising: A stairwell for connecting inside and outside the subway station, having stairs and a top platform, the top platform being connected to the top steps of the stairs or matching the height of the top steps of the stairs, and a remaining space being formed within the evacuation height above the top platform; A blower room provided within the remaining space; And A blowing device, at least part of which is arranged within the blower room, for pressurized blowing into the stairwell from outside the stairwell; The stairwell is a double - flight stairwell, the top platform includes a first platform connected to the top steps of the stairs and a second platform connected in parallel to the first platform, the first platform is connected to one of the two stair segments in opposite directions of the stairs, the second platform is located above the other of the two stair segments in opposite directions of the stairs, and the blower room is arranged on the second platform; or, The stairwell is a single - flight stairwell, the top platform is arranged at the tail of the single - flight stairwell, matching the height of the top steps of the stairs, and the blower room is arranged on the top platform.

2. The subway evacuation staircase passage according to claim 1, wherein The blower room includes fire - resistant glass for separating the blowing device located within the blower room from the stairwell.

3. The subway evacuation staircase passage according to claim 1, characterized in that, The blower room includes: An access door arranged on the side of the stairwell close to the outside of the subway station; and / or, Louvers arranged on the side of the stairwell close to the outside of the subway station for the blowing device to suck air from outside the stairwell.

4. The subway evacuation staircase passage according to claim 3, characterized in that, When the stairwell is a double - flight stairwell, the opening direction of the access door faces outside the stairwell; When the stairwell is a single - flight stairwell, the opening direction of the access door faces inside the blower room.

5. The subway evacuation staircase passage according to claim 1, wherein The blowing device includes: A pressurizing fan hoisted within the blower room; and A blowing assembly connected to the pressurizing fan, at least part of the blowing assembly being exposed outside the stairwell for blowing air into the stairwell.

6. The subway evacuation staircase passage according to claim 5, wherein The blower room has a pipe - passing hole, and the blowing assembly includes: A blower duct, one end of which is connected to the pressurizing fan, and the other end passes through the pipe - passing hole and is exposed outside the stairwell; and A control valve arranged within the blower duct for controlling the opening and closing of the blower duct or controlling the air flow direction within the blower duct.

7. The subway evacuation staircase passage according to claim 6, characterized in that, The control valve includes: A check valve for controlling the air flow direction within the blower duct to blow air unidirectionally from outside the stairwell into the stairwell; and A fire damper located on the side of the check valve away from the pressurizing fan.

8. The subway evacuation staircase passage according to claim 6, characterized in that, The blowing device further includes fire - resistant sealing material for sealing the gap between the blowing assembly passing through the pipe - passing hole.

Images