CN212079364U - Subway train platform - Google Patents

Abstract

The embodiment of the application provides a subway train platform, and this embodiment of the application discharges fume to the platform public area through the tunnel fan, need not add the smoke exhaust fan that is used for discharging fume specially. Because the smoke exhaust duct is positioned at the top of the rail-mounted area of the tunnel and is selectively communicated with the platform public area and the inner cavity of the first air chamber, when a fire disaster occurs in the platform public area, the inner cavity of the smoke exhaust duct and the inner cavity of the first air chamber are communicated, the inner cavity of the first air chamber is blocked with the rail-mounted area, and smoke in the platform public area is exhausted by the first fan through the second smoke exhaust duct and the first air chamber so as to realize smoke exhaust. The flue gas in the platform public area does not need to pass through the shield door, so the shield door does not need to be opened, and the risk that the evacuated personnel fall into the rail row area is avoided. The smoke exhaust air duct is positioned at the top of the rail traveling area, the space of a station public area is not required to be occupied, the layer height of a station layer cannot be increased due to the arrangement of the smoke exhaust air duct, and the arrangement difficulty of civil engineering scale and pipeline synthesis cannot be increased.

Description

Subway train platform

Technical Field

The application relates to the field of ventilation and smoke exhaust, in particular to a subway train platform.

Background

According to the provisions of the subway design Specification GB50157-2013 item 28.4.10 and the subway design fire protection Standard GB51298-2018 item 8.1.3, when a fire breaks out in a public area of a station platform, the air flow speed from the station hall to the platform and the staircase mouth must be downward not less than 1.5m/s, and smoke cannot enter an underground area. The shielding doors at two ends of the platform public area are opened, and the mode of utilizing the tunnel fan to discharge smoke in cooperation with the platform public area is the most common mode, but the risk that evacuation personnel fall off the rail area exists. In contrast, the current processing method without opening the shield door has the following defects: the arrangement of the smoke exhaust air duct causes the height of the platform layer to be larger, the civil scale is increased, and the comprehensive arrangement difficulty of pipelines is increased; or the space feeling and the permeability of a platform public area are influenced, the passenger waiting experience is reduced, and the personnel evacuation efficiency is influenced; or the comprehensive pipeline laying at the end part of the platform public area is influenced, and the arrangement of equipment at the two ends of the platform public area is influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiments of the present application are expected to provide a subway train platform, so that the subway train platform can discharge smoke in the platform public area without opening the shielding doors at two ends of the platform public area, and the problem of large platform layer height is not caused.

In order to achieve the above object, a first aspect of the embodiments of the present application provides a subway train platform, including a platform public area, a tunnel, a smoke exhaust duct, a first switching unit, a first air chamber, and a first fan;

the tunnel is positioned at least one side of the platform public area, the track area of the tunnel at each side is provided with the smoke exhaust duct and the first switching unit, and the smoke exhaust duct is positioned at the top of the track area;

the inner cavity of each smoke exhaust duct is selectively communicated with the inner cavity of the first air chamber and the platform public area through the corresponding first switching unit, the orbit area on each side is selectively communicated with the inner cavity of the first air chamber through the corresponding first switching unit, and the inner cavity of the first air chamber is connected with the first fan.

In one embodiment, the first switching unit includes:

the first on-off device is positioned between the inner cavity of the smoke exhaust duct and the platform public area so as to selectively communicate the inner cavity of the smoke exhaust duct with the platform public area, and the second on-off device is positioned between the inner cavity of the smoke exhaust duct and the inner cavity of the first air chamber so as to selectively communicate the inner cavity of the smoke exhaust duct with the inner cavity of the first air chamber; and

and the third air blocking device is positioned between the inner cavity of the first air chamber and the rail area so as to selectively communicate the inner cavity of the first air chamber with the rail area.

In one embodiment, the first on-off device is a first air valve, and is located on one side of the smoke exhaust duct facing the platform public area, and the first air valve is arranged on an air duct wall of the smoke exhaust duct.

In an embodiment, the second on-off device is a second air valve and is located at the top of the smoke exhaust duct, and the second air valve is arranged on the duct wall of the smoke exhaust duct.

In an embodiment, the third air valve is located at the top of the rail area, and the third air valve is disposed on the tunnel wall of the tunnel.

In one embodiment, the subway train platform further comprises a heat exhausting air duct, a second switching unit, a second air chamber and a second fan;

the heat exhausting air duct and the second switching unit are arranged in each orbital region, the heat exhausting air duct is positioned at the top of the orbital region, the inner cavity of the heat exhausting air duct at each side is selectively communicated with the inner cavity of the second air chamber through the second switching unit, and the inner cavity of the second air chamber is connected with the second fan;

each side of the rail area is communicated with the corresponding heat exhaust air passage.

In one embodiment, the subway train platform further comprises equipment rooms, the equipment rooms are located at two ends of the platform public area along the extension direction of the rail area, and the second air room is an interlayer formed at the top of the equipment rooms.

In one embodiment, the two ends of the platform public area along the extension direction of the rail area are provided with the smoke exhaust duct, the second air chamber, the first switching unit and the second switching unit;

the heat exhausting air duct extends from one end of the platform public area along the extension direction of the rail line area to the other end of the platform public area along the extension direction of the rail line area;

the inner cavity of the second air chamber at each end is selectively communicated with the inner cavity of the heat exhaust air channel at each side through the corresponding second switching unit, and the inner cavity of the smoke exhaust air channel at each end is selectively communicated with the platform public area and the inner cavity of the first air chamber through the corresponding first switching unit.

In one embodiment, the second switching unit includes:

the connecting pipe is respectively connected with the second air chamber and the smoke exhaust air duct; and

and the fourth air valve is positioned at one end of the connecting pipe, is connected with the connecting pipe and selectively communicates the inner cavity of the second air chamber and the inner cavity of the heat exhaust air duct.

In the subway train platform according to the embodiment of the application, the inner cavity of the first air chamber is selectively communicated with the rail passing area of the tunnel, and the first air chamber is connected with the first fan, namely the first fan is a tunnel fan. This application embodiment discharges fume to the platform public area through the tunnel fan, need not add the smoke exhaust fan who is used for discharging fume specially. Because the smoke exhaust air duct is positioned at the top of the rail traveling area of the tunnel and is selectively communicated with the platform public area and the inner cavity of the first air chamber through the first switching unit, when a fire disaster occurs in the platform public area, the inner cavity of the smoke exhaust air duct and the inner cavity of the first air chamber are communicated through the first switching unit, the inner cavity of the first air chamber and the rail traveling area are blocked through the first switching unit, the first fan is started, and smoke in the platform public area is exhausted through the smoke exhaust air duct and the first air chamber by the first fan, so that smoke exhaust is realized. The flue gas in the platform public area does not need to pass through the shielding door, so the shielding doors at two ends of the platform public area do not need to be opened, and the risk that the evacuated personnel fall off the rail row area is avoided. The smoke exhaust duct is positioned at the top of the rail-mounted area, and the arrangement of the smoke exhaust duct does not occupy the space of the platform public area, so that the layer height of the platform layer cannot be increased due to the arrangement of the smoke exhaust duct, and the civil scale and the comprehensive arrangement difficulty of pipelines cannot be increased.

Drawings

Fig. 1 is a plan view of a structure of a subway train platform according to an embodiment of the present application;

FIG. 2 is a cross-sectional view taken at a position A-A in FIG. 1, in which only the smoke evacuation duct, the heat evacuation duct, the first switching unit and the second switching unit are shown;

fig. 3 is a plan view of a subway train platform at an upper level of the plan view of the subway train platform shown in fig. 1;

FIG. 4 is a cross-sectional view at location B-B in FIG. 1;

FIG. 5 is a cross-sectional view at location C-C in FIG. 1;

fig. 6 is a cross-sectional view at position D-D in fig. 1.

Description of reference numerals:

platform public area 1; a tunnel 2; a smoke exhaust duct 3;

a first switching unit 4; a first on-off device 41; a second switching device 42; a third shut-off device 43;

a first air chamber 5; a first fan 6; a heat exhausting air duct 7;

a second switching unit 8; a connection pipe 81; a fourth air valve 82;

a second air chamber 9; an equipment room 10; a first air hole 11; a second air hole 12; a shield door 13.

Detailed Description

It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.

In the description of the present application, "upper", "lower", "top", "bottom", orientation or positional relationship is based on the orientation or positional relationship shown in fig. 2 and 4, it being understood that such orientation terms are merely for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting of the present application.

In the description of the present application, the tracking area of the tunnel refers to the inner cavity of the tunnel, often referred to in the art as the tracking area.

Before describing the embodiments of the present application, it is necessary to analyze the cause of the defect of the smoke discharge at the platform of the subway train in the prior art, and obtain the technical solution of the embodiments of the present application through reasonable analysis.

In the prior art, shield doors at two ends of a platform public area are usually opened, and a tunnel fan is used for discharging smoke in cooperation with the platform public area, but the risk that evacuation personnel fall into a rail row area exists. At present, there are three ways of exhausting smoke to the public area without opening the shielding door: the first treatment mode is to select a large-air-volume smoke exhaust fan, smoke is exhausted through a smoke exhaust air channel arranged in a platform public area, the section area of the smoke exhaust air channel is usually large, the height of a platform layer is required to be larger, the civil construction scale is increased, and meanwhile, the comprehensive arrangement difficulty of pipelines is increased; the second processing mode is that the stair opening of the platform floor is set to be similar to a closed staircase form, which seriously affects the spatial sense and permeability of the platform public area, reduces the waiting experience of passengers and affects the evacuation efficiency of people; the third treatment mode is that two ends of the station floor public area are additionally provided with independent hot air exhaust chambers, and the side walls of the air exhaust chambers are connected with smoke exhaust air pipes to exhaust smoke. The equipment rooms at the two ends of the platform public area form equipment areas for storing equipment, and due to the fact that pipeline arrangement at the connecting positions of the platform public area and the equipment areas is quite complex, the mode that the independent hot air exhausting chambers are additionally arranged at the two ends of the platform public area influences comprehensive pipeline laying at the end portions of the platform public area, and meanwhile influences arrangement and functional use of the equipment rooms at the two ends of the platform public area.

In view of this, in order to enable the subway train platform to exhaust smoke of the platform public area 1 without opening the shielding doors 13 at the two ends of the platform public area 1 and without causing the problem of large platform floor height, the embodiment of the present application provides a subway train platform, please refer to fig. 1-6, which includes the platform public area 1, a tunnel 2, a smoke exhaust duct 3, a first switching unit 4, a first air chamber 5 and a first fan 6. The tunnel 2 is positioned at least one side of the platform public area 1, the rail-row area of the tunnel 2 at each side is provided with a smoke exhaust duct 3 and a first switching unit 4, and the smoke exhaust duct 3 is positioned at the top of the rail-row area; the inner cavity of each side smoke exhaust duct 3 is respectively and selectively communicated with the inner cavity of a first air chamber 5 and the platform common area 1 through a corresponding first switching unit 4, each side rail area is selectively communicated with the inner cavity of the first air chamber 5 through a corresponding first switching unit 4, and the inner cavity of the first air chamber 5 is connected with a first fan 6.

Since the first plenum 5 is in selective communication with the trackzone of the tunnel 2, the first plenum 5 is connected to a first fan 6, meaning that the first fan 6 in the embodiment of the present application is a tunnel fan. This application embodiment discharges fume to platform public area 1 through the tunnel fan, need not add the smoke exhaust fan who is used for discharging fume specially. Because the smoke exhaust duct 3 is positioned at the top of the orbit region of the tunnel 2, and the smoke exhaust duct 3 is selectively communicated with the platform public region 1 and the inner cavity of the first air chamber 5 through the first switching unit 4, when a fire disaster occurs in the platform public region 1, the inner cavities of the smoke exhaust duct 3 and the inner cavity of the first air chamber 5 are communicated through the first switching unit 4, the inner cavity of the first air chamber 5 and the orbit region are blocked through the first switching unit 4, and the first fan 6 is started, smoke in the platform public region 1 is exhausted by the first fan 6 through the smoke exhaust duct 3 and the first air chamber 5, thereby realizing smoke exhaust. The flue gas in the platform public area 1 does not need to pass through the shielding door 13, so the shielding doors 13 at the two ends of the platform public area 1 do not need to be opened, and the risk that the evacuated personnel fall into the rail area is avoided. The smoke exhaust duct 3 is located at the top of the rail traveling area, and the arrangement of the smoke exhaust duct 3 does not occupy the space of the platform public area 1, so that the layer height of a platform layer cannot be increased due to the arrangement of the smoke exhaust duct 3, the civil engineering scale and the comprehensive arrangement difficulty of pipelines cannot be increased, and the space utilization rate of the platform public area 1 is improved.

In the subway train platform of the embodiment of the application, the smoke of the platform public area 1 is extracted by the first fan 6 through the inner cavity of the smoke exhaust duct 3 and the inner cavity of the first air chamber 5, so that the smoke exhaust of the platform public area 1 is realized. The platform escalator opening is not required to be arranged in a manner similar to a closed staircase in order to discharge smoke to the platform public area 1, so that the waiting experience of passengers is not reduced, and the evacuation efficiency of people is not influenced.

In an embodiment, referring to fig. 1, 2, 3 and 6, the first switching unit 4 includes a first switching device 41, a second switching device 42 and a third switching device 43. The first on-off device 41 is located between the inner cavity of the smoke evacuation duct 3 and the platform public area 1 to selectively communicate the inner cavity of the smoke evacuation duct 3 with the platform public area 1. The second opening and closing means 42 is provided between the inner cavity of the flue gas duct 3 and the inner cavity of the first air chamber 5 to selectively communicate the inner cavity of the flue gas duct 3 with the inner cavity of the first air chamber 5. The third shut-off device 43 is positioned between the interior chamber of the first plenum 5 and the orbiting region to selectively communicate the interior chamber of the first plenum 5 with the orbiting region. In this way, the first and second on-off devices 41 and 42 respectively control the connection and disconnection of the corresponding chambers by the third on-off device 43.

Specifically, when a fire breaks out in the platform public area 1, the first on-off device 41 is opened to communicate the inner cavity of the smoke exhaust duct 3 with the platform public area 1, the second on-off device 42 is opened to communicate the inner cavity of the smoke exhaust duct 3 with the inner cavity of the first air chamber 5, the third on-off device 43 is closed to stop the inner cavity of the first air chamber 5 from the orbiting area, and the first fan 6 is started to exhaust smoke in the platform public area 1.

When no fire occurs in the platform public area 1, the first on-off device 41 is closed to stop the inner cavity of the smoke exhaust duct 3 from the platform public area 1, and the second on-off device 42 is closed to stop the inner cavity of the smoke exhaust duct 3 from the inner cavity of the first air chamber 5. Therefore, the airflow of the platform public area 1 cannot flow to the inner cavity of the first air chamber 5, so that the interference of the airflow of the platform public area 1 on the normal work in a fire-free state is avoided, and the platform public area 1 is completely isolated from the whole smoke exhaust channel; the third breaking device 43 is opened to communicate the inner cavity of the first air chamber 5 with the rail-mounted area, so that the first fan 6 can perform the normal function of the tunnel fan under the condition that no fire occurs in the platform public area 1, the rail-mounted area is ventilated, and the first fan 6 can be closed according to the actual condition.

In an embodiment, referring to fig. 1, fig. 2 and fig. 3, a first air hole 11 is formed on an air duct wall of the smoke exhaust duct 3, the first air hole 11 is located at the top of an inner cavity of the smoke exhaust duct 3, and the second cut-off device 42 covers the first air hole 11.

In one embodiment, referring to fig. 1 and 3, the tunnel wall of the tunnel 2 is formed with a second air hole 12, the second air hole 12 is located at the top of the track area of the tunnel 2, and the third breaking device 43 covers the second air hole 12.

In an embodiment, the first on-off device 41 may not be provided, the inner cavity of the exhaust duct 3 is in a communication state with the platform public area 1, and the second on-off device 42 and the third on-off device 43 are used to control the communication stop state of the other cavities.

Specifically, when a fire breaks out in the platform public area 1, the second opening/closing device 42 is opened to communicate the inner cavity of the smoke exhaust duct 3 with the inner cavity of the first air chamber 5, and the third opening/closing device 43 is closed to stop the inner cavity of the first air chamber 5 from the rail area, so that the inner cavity of the smoke exhaust duct 3 is always in a communication state with the platform public area 1 due to the absence of the first opening/closing device 41, and smoke is exhausted from the platform public area 1 under the suction action of the first fan 6.

When no fire occurs in the platform public area 1, the second on-off device 42 is closed to stop the inner cavity of the smoke exhaust duct 3 from the first air chamber 5, and the third on-off device 43 is opened to communicate the inner cavity of the first air chamber 5 with the rail-running area. Although the inner cavity of the smoke exhaust duct 3 and the inner cavity common to the platform are always in a communicated state because the first on-off device 41 is not arranged, the inner cavity of the smoke exhaust duct 3 is not communicated with the inner cavity of the first air chamber 5, even if part of air flow of the platform common area 1 enters the inner cavity of the smoke exhaust duct 3, the air flow can be retained in the inner cavity of the smoke exhaust duct 3 and can not flow to the inner cavity of the first air chamber 5, and therefore interference of the air flow of the platform common area 1 on normal work in a fire-free state is avoided.

In one embodiment, the second opening/closing device 42 may not be provided, the inner cavity of the exhaust duct 3 and the inner cavity of the first air chamber 5 may be always in a communication state, and the communication/closing state of the remaining chambers may be controlled by the first opening/closing device 41 and the third opening/closing device 43.

Specifically, when a fire breaks out in the platform public area 1, the first on-off device 41 is opened to communicate the inner cavity of the smoke exhaust duct 3 with the platform public area 1, the third on-off device 43 is closed to stop the inner cavity of the first air chamber 5 from the orbiting area, and since the second on-off device 42 is not provided, the inner cavity of the smoke exhaust duct 3 and the inner cavity of the first air chamber 5 are always in a communicated state, and smoke is exhausted from the platform public area 1 under the suction action of the first fan 6.

When no fire occurs in the platform public area 1, the first on-off device 41 is closed to stop the inner cavity of the smoke exhaust duct 3 from the platform public area 1, and the third on-off device 43 is opened to communicate the inner cavity of the first air chamber 5 with the rail running area. Although the inner cavity of the smoke exhaust duct 3 is always in a communication state with the inner cavity of the first air chamber 5 because the second opening/closing device 42 is not provided, the inner cavity of the smoke exhaust duct 3 is not communicated with the platform public area 1, and the air flow of the platform public area 1 cannot flow to the inner cavity of the first air chamber 5 through the inner cavity of the smoke exhaust duct 3, so that the interference of the air flow of the platform public area 1 to the normal work in the state of no fire occurrence is avoided.

In one embodiment, the first on-off device 41 is a first air valve, which is located on the side of the smoke evacuation duct 3 facing the platform public area 1, and is disposed on the duct wall of the smoke evacuation duct 3. In this way, the first air valve can control the communication or cut-off between the inner cavity of the smoke exhaust duct 3 and the platform public area 1. The first air valve is directly arranged on the air duct wall, other installation parts for supporting the first air valve are not needed, and the space occupied by the whole first on-off device 41 can be saved to a certain extent.

It will be appreciated that the flue duct 3 is located at the top of the rail section, and the duct walls of the flue duct 3 are located higher than the screen door 13. The first on/off device 41 is located above the screen door 13.

In one embodiment, the first air valve may be an electric air valve.

In one embodiment, the second cut-off device 42 is a second air valve, which is located at the top of the smoke evacuation duct 3 and is disposed on the duct wall of the smoke evacuation duct 3. In this way, the connection or disconnection between the inner cavity of the smoke exhaust duct 3 and the inner cavity of the first air chamber 5 can be controlled by the second air valve. The second air valve is directly arranged on the air duct wall, other installation parts for supporting the second air valve are not needed, and the space occupied by the whole second on-off device 42 can be saved to a certain extent.

In an embodiment the third shut-off means 43 is a third air flap, which is located at the top of the orbiting region and which is arranged in the tunnel wall of the tunnel 2. In this way, the communication and the cut-off of the inner cavity of the first air chamber 5 and the orbit area can be controlled by the third air valve. The third air valve is directly installed on the tunnel wall, other installation parts for supporting the third air valve are not needed, and the space occupied by the whole third air valve breaking device 43 can be saved to a certain extent.

In an embodiment, referring to fig. 1 to 6, the subway train platform further includes a heat exhausting air duct 7, a second switching unit 8, a second air compartment 9 and a second fan. Each side rail area is provided with a heat exhaust air duct 7 and a second switching unit 8, the heat exhaust air duct 7 is positioned at the top of the rail area, the inner cavity of each side heat exhaust air duct 7 is selectively communicated with the inner cavity of a second air chamber 9 through the second switching unit 8, and the inner cavity of the second air chamber 9 is connected with a second fan. Each side rail section is communicated with a corresponding heat exhaust air passage 7. By adopting the structure, the inner cavity of the first air chamber 5 can be used for discharging heat to the rail running area, smoke is not discharged during heat discharging, heat is not discharged during smoke discharging, and heat discharging and smoke discharging are not interfered with each other.

Specifically, when no fire occurs in the platform public area 1, the inner cavity of the heat exhausting air duct 7 is communicated with the inner cavity of the second air chamber 9 through the second switching unit 8, the inner cavity of the first air chamber 5 is communicated with the rail running area through the first switching unit 4, the second fan is started, under the suction action of the second fan, external air flows through the inner cavity of the first air chamber 5 to enter the rail running area, enters the heat exhausting air duct 7 through the rail running area, enters the second air chamber 9 through the heat exhausting air duct 7, and the second fan exhausts air flow of the second air chamber 9, so that heat is exhausted from the rail running area.

When a fire breaks out in the platform public area 1, the inner cavity of the first air chamber 5 and the orbit area are blocked by the first switching unit 4, so that even if the second fan is started to suck the airflow in the orbit area, the airflow in the inner cavity of the first air chamber 5 is not influenced, and the smoke discharge of the first fan 6 to the platform public area 1 is not influenced. Therefore, when a fire breaks out in the platform public area 1, the inner cavity of the heat exhausting air duct 7 and the inner cavity of the second air chamber 9 can be cut off by the second switching unit 8, and the second fan is turned off, which is usually adopted; the inner cavity of the heat exhausting air duct 7 can be communicated with the inner cavity of the second air chamber 9 through the second switching unit 8, and the second fan is started.

In one embodiment, referring to fig. 1 and 4, the subway train platform further includes equipment rooms 10, the equipment rooms 10 are located at both ends of the platform public area 1 along the extension direction of the platform public area, and the second air room 9 is a sandwich layer formed at the top of the equipment room 10. Generally, the equipment rooms 10 are arranged at the two ends of the platform public area 1, the second air chamber 9 is an interlayer formed at the top of the equipment room 10, independent air chambers for heat extraction do not need to be arranged at the two ends of the platform public area 1, the influence on the arrangement pattern and the use function of the equipment rooms 10 at the two ends of the platform public area 1 is small, the influence on the laying of comprehensive pipelines at the two ends of the platform public area 1 is small, the civil engineering scale is saved, and the flexibility and the utilization rate of the arrangement of the equipment rooms are improved.

In one embodiment, the two ends of the platform public area 1 along the extension direction of the moving area are provided with a smoke exhaust duct 3, a second air chamber 9, a first switching unit 4 and a second switching unit 8. The heat exhausting duct 7 extends from one end of the platform common area 1 along the extending direction of the rail area to the other end of the platform common area 1 along the extending direction of the rail area. The inner cavity of the second air chamber 9 at each end is selectively communicated with the inner cavity of the heat exhausting air channel 7 at each side through the corresponding second switching unit 8, and the inner cavity of the smoke exhausting air channel 3 at each end is selectively communicated with the inner cavities of the platform public area 1 and the first air chamber 5 through the corresponding first switching unit 4. So, when the conflagration takes place for platform public area 1, under the suction effect of first fan 6, the flue gas of platform public area 1 concentrates to 3 departments of the wind channel of discharging fume at 1 both ends of platform public area, can effectually control the flue gas in the area of waiting, avoids the visibility that the flue gas diffusion arouses to reduce or the emergence of secondary disaster, is favorable to safe sparse. When no fire disaster happens in the platform public area 1, the second air chambers 9 at two ends can radiate the heat of the rail-mounted area through the heat exhausting air ducts 7.

In one embodiment, referring to fig. 1 and 4, the second switching unit 8 includes a connection pipe 81 and a fourth air valve 82. The connection pipe 81 is connected to the second air compartment 9 and the smoke evacuation duct 3, respectively. The fourth air valve 82 is positioned at one end of the connection pipe 81, the fourth air valve 82 is connected with the connection pipe 81, and the fourth air valve 82 selectively communicates the inner cavity of the second air chamber 9 and the inner cavity of the heat exhaust air duct 7. When heat extraction of the heat exhausting air ducts 7 at two sides is required, a certain distance is formed between the heat exhausting air ducts 7 and the second air chamber 9, the heat exhausting air ducts 7 and the second air chamber 9 are connected through the connecting pipe 81, and the connection or the disconnection of the inner cavity of the second air chamber 9 and the inner cavity of the heat exhausting air ducts 7 is controlled by the fourth air valve 82.

In one embodiment, referring to fig. 1 and 4, a fourth air valve 82 may be disposed at an end of the connection pipe 81 facing the second air compartment 9.

In one embodiment, the fourth air valve 82 may also be disposed at an end of the connection pipe 81 facing the smoke evacuation duct 3.

In one embodiment, the connection pipe 81 may be a metal pipe.

In one embodiment, the connection pipe 81 may be a concrete pipe.

In one embodiment, the fourth air valve 82 may be an electric air valve.

The embodiment of the application provides a method of discharging fume of subway train platform, is applied to any kind of above-mentioned subway train platform, includes: when a fire disaster occurs in the platform public area 1, the inner cavity of the smoke exhaust duct 3 and the inner cavity of the first air chamber 5 are communicated through the first switching unit 4, and the inner cavity of the first air chamber 5 is stopped from the orbit area through the first switching unit 4; the first fan 6 is activated to discharge smoke to the platform public area 1. Therefore, when a fire disaster occurs in the platform public area 1, the smoke in the platform public area 1 is exhausted by the first fan 6 through the inner cavity of the smoke exhaust duct 3 and the inner cavity of the first air chamber 5, so that the smoke exhaust of the platform public area 1 is realized.

It can be understood that, when a fire occurs in the platform public area 1, because the first switching unit 4 blocks the inner cavity of the first air chamber 5 and the rail running area, the air flow in the rail running area cannot enter the inner cavity of the first air chamber 5, even if the corresponding subway train platform includes the heat exhausting air duct 7, the second switching unit 8, the second air chamber 9 and the second fan, the working state of the second fan and the communication state of the inner cavity of the heat exhausting air duct 7 and the inner cavity of the second air chamber 9 will not affect the first fan 6 to suck the smoke in the platform public area 1. Therefore, when the first fan 6 is started to suck the smoke in the platform public area 1, the second fan can be started and the inner cavity of the exhaust air passage 7 and the inner cavity of the second air chamber 9 are communicated through the second switching unit 8. When the first fan 6 is started to suck the smoke in the platform public area 1, the second fan can also be closed, and the inner cavity of the heat exhausting air duct 7 and the inner cavity of the second air chamber 9 are cut off through the second switching unit 8, which is usually adopted.

Specifically, when a fire breaks out in the platform public area 1, the first on-off device 41 can be opened to communicate the platform public area 1 with the inner cavity of the smoke exhaust duct 3, the second on-off device 42 can be opened to communicate the inner cavity of the smoke exhaust duct 3 with the inner cavity of the first air chamber 5, the third on-off device 43 can be closed to stop the inner cavity of the first air chamber 5 from the orbiting area, and the first fan 6 is started. The smoke in the platform public area 1 is exhausted by the first fan 6 through the inner cavity of the smoke exhaust duct 3 and the inner cavity of the first air chamber 5, so that the smoke exhaust of the platform public area 1 is realized.

Because the third cut-off device 43 cuts off the inner cavity of the first air chamber 5 and the rail running area, the working state of the second fan of the corresponding subway train platform and the communication state of the inner cavity of the heat exhausting air duct 7 and the inner cavity of the second air chamber 9 do not affect the first fan 6 to suck the smoke in the platform public area 1. Therefore, the second switching unit 8 can be closed to cut off the inner cavity of the exhaust air duct 7 and the inner cavity of the second air chamber 9, and the second fan is closed. Or the second switching unit 8 can be opened to communicate the inner cavity of the hot air exhaust channel 7 with the inner cavity of the second air chamber 9, and the second fan is started.

The fourth air valve may be opened to open the second switching unit 8, or closed to close the second switching unit 8.

The embodiment of the application provides a method of discharging fume of subway train platform, is applied to above-mentioned corresponding subway train platform, includes: when a fire disaster occurs in the platform public area 1, the inner cavity of the smoke exhaust duct 3 and the inner cavity of the first air chamber 5 are communicated through the first switching unit 4, and the inner cavity of the first air chamber 5 is stopped from the orbit area through the first switching unit 4; starting a first fan 6 to discharge smoke to the platform public area 1;

when no fire occurs in the platform public area 1, the platform public area 1 is stopped from the inner cavity of the first air chamber 5 through the first switching unit 4, the inner cavity of the first air chamber 5 is communicated with the rail running area through the first switching unit 4, and the inner cavity of the second air chamber 9 is communicated with the heat exhaust air passage 7 through the second switching unit 8; the first fan 6 is turned off and the second fan is turned on to reject heat to the trackside area.

Therefore, when a fire disaster occurs in the platform public area 1, the first fan 6 is used for discharging smoke to the platform public area 1, and the smoke in the platform public area 1 is exhausted by the first fan 6 through the inner cavity of the smoke discharge air duct 3 and the inner cavity of the first air chamber 5. When no fire disaster occurs in the platform public area 1, the second fan is used for discharging heat to the orbit area, outside air flows through the inner cavity of the first air chamber 5, the orbit area, the inner cavity of the heat discharging air channel 7 and the inner cavity of the second air chamber 9 and is pumped away by the second fan, and the air flow passing through the orbit area carries away heat of the orbit area.

It can be understood that when no fire occurs in the platform public area 1, the second fan is started to discharge heat to the track area, and the first fan 6 is usually required to be turned off, so as to avoid heat that the external air flow is difficult to enter the track area running area through the inner cavity of the first air chamber 5 under the suction action of the first fan 6.

It can be understood that, during the heat removal process of the second fan to the orbiting region, the inner cavities of the platform common region 1 and the first air chamber 5 need to be cut off, so as to avoid that the air flow of the platform common region 1 enters the inner cavity of the first air chamber 5 to affect the heat removal process of the second fan to the orbiting region.

The first switching unit 4 may be configured to block the inner cavity of the platform common area 1 and the inner cavity of the first air chamber 5, or the first switching unit 4 may be configured to block the inner cavity of the first air chamber 5 and the inner cavity of the flue gas duct 3, and block the inner cavity of the flue gas duct 3 and the platform common area 1.

The first switching unit 4 may be configured to block the platform common area 1 and the inner cavity of the first air chamber 5, or the first switching unit 4 may be configured to block the inner cavity of the first air chamber 5 and the inner cavity of the flue gas duct 3.

The first switching unit 4 may be configured to block the inner cavities of the platform common area 1 and the first air chamber 5, or the first switching unit 4 may be configured to block the inner cavity of the exhaust air duct 3 from the platform common area 1.

It can be understood that, when a fire breaks out in the platform public area 1, since the first switching unit 4 blocks the inner cavity of the first air chamber 5 and the rail-bound area, the air flow in the rail-bound area cannot enter the inner cavity of the first air chamber 5, and the working state of the second fan and the communication state of the inner cavity of the heat exhausting duct 7 and the inner cavity of the second air chamber 9 do not affect the suction of the smoke in the platform public area 1 by the first fan 6. Therefore, when the first fan 6 is started to suck the smoke in the platform public area 1, the second fan can be started, and the inner cavity of the heat exhausting air duct 7 and the inner cavity of the second air chamber 9 are communicated through the second switching unit 8. When the first fan 6 is started to suck the smoke in the platform public area 1, the second fan can also be closed, and the inner cavity of the heat exhausting air duct 7 and the inner cavity of the second air chamber 9 are cut off through the second switching unit 8, which is usually adopted.

Specifically, when a fire breaks out in the platform public area 1, the first on-off device 41 can be opened to communicate the inner cavity of the smoke exhaust duct 3 with the platform public area 1, the second on-off device 42 can be opened to communicate the inner cavity of the smoke exhaust duct 3 with the inner cavity of the first air chamber 5, the third on-off device 43 can be closed to stop the inner cavity of the first air chamber 5 from the orbiting area, and the first fan 6 is started. The smoke in the platform public area 1 is exhausted through the inner cavity of the smoke exhaust duct 3 and the inner cavity of the first air chamber 5 by the first fan 6.

The third cut-off device 43 cuts off the inner cavity of the first air chamber 5 and the orbit area, so that the working state of the second fan and the communication state between the inner cavity of the second air chamber 9 and the inner cavity of the heat exhaust air passage 3 do not affect the smoke exhaust of the first fan 6 to the platform public area 1. When a fire disaster occurs in the platform public area 1, the second switching unit 8 can be closed to cut off the inner cavity of the heat exhaust air passage 7 and the inner cavity of the second air chamber 9, and the second fan is closed. Or the second switching unit 8 can be opened to communicate the inner cavity of the hot air exhaust channel 7 with the inner cavity of the second air chamber 9, and the second fan is started.

When no fire happens in the platform public area 1, the first on-off device 41 can be closed to stop the platform public area 1 and the inner cavity of the smoke exhaust duct 3, the second on-off device 42 is closed to stop the inner cavity of the smoke exhaust duct 3 and the inner cavity of the first air chamber 5, the third on-off device 43 is opened to communicate the inner cavity of the first air chamber 5 with the rail running area, the second switching unit 8 is opened to communicate the inner cavity of the second air chamber 9 with the inner cavity of the heat exhaust duct 7, the first fan 6 is closed, and the second fan is started. The external air flows to the second fan through the inner cavity of the first air chamber 5, the orbit region, the inner cavity of the heat exhaust air duct 7 and the inner cavity of the second air chamber 9, and the flowing air carries the heat of the orbit region to exhaust heat to the orbit region, which is generally adopted.

It is understood that as long as the internal cavities of the platform public area 1 and the first air chamber 5 are cut off, the air flow of the platform public area 1 does not enter the internal cavity of the first air chamber 5 to affect the heat discharge of the second fan to the orbit area, so that when no fire occurs in the platform public area 1, only one of the first on-off device 41 and the second on-off device 42 can be turned off.

For example, when the platform public area 1 is not in fire, the first on-off device 41 may be closed to block the internal cavities of the platform public area 1 and the first air chamber 5, and the second on-off device 42 may be in an open state.

For example, when the platform public area 1 is not in fire, the second opening/closing device 42 may be closed to block the internal cavities of the platform public area 1 and the first air chamber 5, and the first opening/closing device 41 may be in an open state.

The fourth air valve may be opened to open the second switching unit 8, or closed to close the second switching unit 8.

The various embodiments/implementations provided herein may be combined with each other without contradiction.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (9)

1. A subway train platform is characterized by comprising a platform public area, a tunnel, a smoke exhaust duct, a first switching unit, a first air chamber and a first fan;

the tunnel is positioned at least one side of the platform public area, the track area of the tunnel at each side is provided with the smoke exhaust duct and the first switching unit, and the smoke exhaust duct is positioned at the top of the track area;

the inner cavity of each smoke exhaust duct is selectively communicated with the inner cavity of the first air chamber and the platform public area through the corresponding first switching unit, the orbit area on each side is selectively communicated with the inner cavity of the first air chamber through the corresponding first switching unit, and the inner cavity of the first air chamber is connected with the first fan.

2. The subway train platform as claimed in claim 1, wherein said first switching unit comprises:

the first on-off device is positioned between the inner cavity of the smoke exhaust duct and the platform public area so as to selectively communicate the inner cavity of the smoke exhaust duct with the platform public area, and the second on-off device is positioned between the inner cavity of the smoke exhaust duct and the inner cavity of the first air chamber so as to selectively communicate the inner cavity of the smoke exhaust duct with the inner cavity of the first air chamber; and

and the third air blocking device is positioned between the inner cavity of the first air chamber and the rail area so as to selectively communicate the inner cavity of the first air chamber with the rail area.

3. A subway train platform as claimed in claim 2, wherein said first on-off device is a first air valve located on the side of said smoke evacuation duct facing said platform public area, said first air valve being disposed on the duct wall of said smoke evacuation duct.

4. A subway train platform as claimed in claim 2, wherein said second cut-off device is a second air valve located at the top of said smoke evacuation duct, said second air valve being provided on the duct wall of said smoke evacuation duct.

5. A subway train platform as claimed in claim 2, wherein said third cut-off device is a third air valve located at the top of said rail section, said third air valve being provided on the tunnel wall of said tunnel.

6. The subway train platform as claimed in any one of claims 1 to 5, further comprising a heat exhausting air duct, a second switching unit, a second air chamber and a second fan;

the heat exhausting air duct and the second switching unit are arranged in each orbital region, the heat exhausting air duct is positioned at the top of the orbital region, the inner cavity of the heat exhausting air duct at each side is selectively communicated with the inner cavity of the second air chamber through the second switching unit, and the inner cavity of the second air chamber is connected with the second fan;

each side of the rail area is communicated with the corresponding heat exhaust air passage.

7. The subway train platform as claimed in claim 6, further comprising equipment rooms located at both ends of said platform common area in an extending direction of said rail zone, said second air room being an interlayer formed on top of said equipment rooms.

8. The subway train platform as claimed in claim 6, wherein said smoke evacuation duct, said second air chamber, said first switching unit and said second switching unit are provided at both ends of said platform common area in the extension direction of said rail-bound area;

the heat exhausting air duct extends from one end of the platform public area along the extension direction of the rail line area to the other end of the platform public area along the extension direction of the rail line area;

the inner cavity of the second air chamber at each end is selectively communicated with the inner cavity of the heat exhaust air channel at each side through the corresponding second switching unit, and the inner cavity of the smoke exhaust air channel at each end is selectively communicated with the platform public area and the inner cavity of the first air chamber through the corresponding first switching unit.

9. The subway train platform as claimed in claim 6, wherein said second switching unit comprises:

the connecting pipe is respectively connected with the second air chamber and the smoke exhaust air duct; and

and the fourth air valve is positioned at one end of the connecting pipe, is connected with the connecting pipe and selectively communicates the inner cavity of the second air chamber and the inner cavity of the heat exhaust air duct.

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