JP7610692B2 - Smoke ventilation system for reverse-type underground station and method thereof - Google Patents

Description

The present invention relates to the technical field of railway transportation, and in particular to a ventilation and smoke exhaust system for an inverted underground station and a ventilation and smoke exhaust method thereof.

Conventional underground stations have a station building floor and a platform floor, with the station building floor located on the first basement floor and the platform floor located on the second basement floor. The station building floor is used by passengers to enter the station from outside and provides functions such as ticket gates, the platform floor provides a waiting area for passengers, and station tunnels are located on both sides of the platform.

In the case of an underground station like the one described above, if a fire breaks out on the platform, the design principle for ventilation, smoke exhaust and safe evacuation is to activate the smoke exhaust system in the station's public areas, exhaust smoke from the public areas of the platform, activate the tunnel smoke exhaust system, and open the platform doors to assist with smoke exhaust. The evacuation route for personnel is from the platform on the second basement floor to the station building on the first basement floor, through the entrance and exit, and then to the outside of the station (above ground). In order to ensure the safe evacuation of personnel, the current standard, the Subway Design Standard GB 50157-2013, clearly states that in the event of a fire on the platform, the air flow rate of the escalator from the station building to the platform must not be less than 1.5 m/s to prevent smoke from the platform from spreading to the station building. As a result, if a fire breaks out inside the station building, the ventilation and smoke exhaust system for the platform is stopped, the smoke exhaust system in the station's public areas is activated, smoke is exhausted from the public areas of the station, and air is naturally supplied from the entrance and exit. The evacuation route for personnel is from the platform on the second basement floor to the station building on the first basement floor, and then outside the station (above ground). The evacuation route in the event of a fire inside the station building is the same as the evacuation route in the event of a fire on the platform, but because the fire is occurring in the station building, there is no requirement that the air flow speed of the escalator from the station building to the platform be 1.5 m/s.

In practical application, the above-mentioned ventilation smoke exhaust method can be applied to the smoke exhaust of normal underground stations and can achieve high ventilation smoke exhaust efficiency, but with the rapid expansion of subway construction scale, various special station formats have appeared. The inverted underground station is one of them. The inverted underground station includes a platform floor, a station building floor, and a station tunnel located on the platform floor, the platform floor is located above the station building floor, an escalator is provided between the platform floor and the station building floor, a platform door is provided between the station tunnel and the platform on the platform floor, and the station building floor is provided with an entrance and exit that directly accesses the ground. The safe evacuation route of the inverted underground station is different from that of the conventional underground station, and it is from the platform on the first basement floor to the station building on the second basement floor, and then through a long passage to the outside of the station (ground), so the requirements for the ventilation smoke exhaust design of such a station do not match those of the conventional station as follows. Specifically, it is shown below.
In the event of a fire in a station building, the downward air flow speed from the station building to the escalators must not fall below 1.5 m/s to prevent smoke from the public areas of the station from spreading to the platform above. However, stations are usually only equipped with smoke exhaust fans for the public areas, and there are no ventilation openings on the platforms, making it difficult to ensure the downward air speed of 1.5 m/s for the escalators just by using the suction of the smoke exhaust fans for the public areas of the station building.

According to the Subway Design Standards GB 50157-2013, if a fire breaks out on the platform, the air flow speed of the escalator from the station building to the platform must not fall below 1.5 m/s during the platform fire period. However, because the station entrance is deep (located on the second basement floor), it is difficult to supply air, making it difficult to meet the requirement that the air speed of the escalator from the station building to the platform must be at least 1.5 m/s, which could lead to smoke spreading from the platform to the station building.

The present invention provides a ventilation and smoke exhaust system for an inverted underground station and a ventilation and smoke exhaust method thereof to solve the problem that conventional inverted underground stations have difficulty in providing ventilation and smoke exhaust in the event of a fire.

The present invention includes a public area smoke exhaust subsystem and a dual-purpose smoke exhaust subsystem,
the public area ventilation smoke exhaust subsystem includes a first platform public area ventilation smoke exhaust duct, a first station building public area ventilation smoke exhaust duct, and a first ventilation smoke exhaust device, the first platform public area ventilation smoke exhaust duct and the first station building public area ventilation smoke exhaust duct each communicate with the first ventilation smoke exhaust device, the heat dissipation/air exhaust dual-purpose smoke exhaust subsystem includes a train top smoke exhaust vent duct, a second platform public area ventilation smoke exhaust duct, a second station building public area ventilation smoke exhaust duct, and a second ventilation smoke exhaust device, the train top smoke exhaust vent duct, the second platform public area ventilation smoke exhaust duct, and the second station building public area ventilation smoke exhaust duct each communicate with the second ventilation smoke exhaust device.

According to the inverted underground station ventilation smoke exhaust system of the present invention, it further includes an entrance/exit passage ventilation smoke exhaust subsystem, which includes an entrance/exit passage ventilation smoke exhaust duct and a third ventilation smoke exhaust device, and the entrance/exit passage ventilation smoke exhaust duct is connected to the third ventilation smoke exhaust device.

According to the inverted underground station ventilation smoke exhaust system of the present invention, the system further includes a tunnel ventilation smoke exhaust subsystem, which includes a tunnel ventilation smoke exhaust outlet and a fourth ventilation smoke exhaust device, and the tunnel ventilation smoke exhaust outlet is connected to the fourth ventilation smoke exhaust device.

According to the inverted type underground station ventilation smoke exhaust system of the present invention, the system further includes a smoke blocking roll-up curtain installed on a station building floor of the underground station and having a squeezed state and an expanded state;
In the inverted underground station where no fire occurs, the smoke roll-up curtain is in a retracted state, and in the inverted underground station where a fire occurs, the smoke roll-up curtain is in an expanded state, and the smoke roll-up curtain is arranged to surround the left, right and rear sides of the escalator, exposing the escalator entrance at the front side of the escalator.

The reverse-type underground station ventilation and smoke exhaust system according to the present invention further includes a first fire detector, a second fire detector, and a third fire detector, the first fire detector being provided in the public area of the station, the second fire detector being provided in the public area of the platform, and the third fire detector being provided in the station tunnel.

The present invention also provides
In the event of a fire occurring in the public area of the station building, the public area ventilation and smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, the heat dissipation and ventilation dual-purpose smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem are controlled and started to exhaust smoke from the public area of the station building via the first station building public area ventilation and smoke exhaust duct, assist smoke exhaust with the entrance and exit passage ventilation and smoke exhaust duct, supply air to the platform public area via the second platform public area ventilation and smoke exhaust duct, supply air to the station building tunnel from the tunnel ventilation and smoke exhaust outlet, and deploy the smoke blocking roll-up curtain; or
The present invention provides a smoke exhaust method for a ventilation and smoke exhaust system of an inverted underground station as described in any one of the above, which includes, when a fire occurs in a public area of a station building, controlling and starting the public area ventilation and smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, the heat dissipation and ventilation dual-purpose smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem, exhausting smoke from the public area of the station building via the second station building public area ventilation and smoke exhaust duct, assisting the smoke exhaust with the entrance and exit passage ventilation and smoke exhaust duct, blowing air to the platform public area via the first platform public area ventilation and smoke exhaust duct, blowing air to the station building tunnel from the tunnel ventilation and smoke exhaust outlet, and deploying a smoke barrier roll-up curtain.

The present invention also provides
In the event of a fire occurring in the public area of the platform, the public area ventilation and smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, the heat dissipation and ventilation dual-purpose smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem are controlled and activated to exhaust smoke from the public area of the platform via the second platform public area ventilation and smoke exhaust duct, assist smoke exhaust by the tunnel ventilation and smoke exhaust outlet, supply air to the public area of the station building via the first station building public area ventilation and smoke exhaust duct, supply air via the entrance and exit passage ventilation and smoke exhaust duct, and deploy a smoke blocking roll-up curtain; or
The present invention provides a smoke exhaust method for a ventilation and smoke exhaust system of an inverted underground station as described in any one of the above, which includes, when a fire occurs in the public area of the platform, controlling and starting the public area ventilation and smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, the heat dissipation and ventilation dual-purpose smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem, exhausting smoke from the public area of the platform via the first platform public area ventilation and smoke exhaust duct, assisting the smoke exhaust by the tunnel ventilation and smoke exhaust outlet, blowing air to the public area of the station building via the second station building public area ventilation and smoke exhaust duct, supplying air via the entrance and exit passage ventilation and smoke exhaust duct, and deploying a smoke barrier roll-up curtain.

The present invention also provides
In the event of a fire occurring in a station tunnel, control and start the public area ventilation and smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, the heat dissipation and ventilation dual-purpose smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem, exhaust smoke through the train top smoke exhaust vent duct, assist smoke exhaust through the tunnel ventilation and smoke exhaust outlet, exhaust smoke from the platform public area through the first platform public area ventilation and smoke exhaust duct, supply air through the entrance and exit passage ventilation and smoke exhaust duct, and deploy the smoke blocking roll-up curtain; or The present invention provides a smoke exhaust method for a ventilation and smoke exhaust system of an inverted underground station as described in any one of the above, which includes, when a fire occurs in a station tunnel, controlling and starting the public area ventilation and smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, the heat dissipation and ventilation dual-purpose smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem, exhausting smoke through the train top smoke exhaust vent duct, exhausting smoke from the platform public area through the second platform public area ventilation and smoke exhaust duct, assisting smoke exhaust by the tunnel ventilation and smoke exhaust outlet, blowing air to the station public area through the first station public area ventilation and smoke exhaust duct, supplying air through the entrance and exit passage ventilation and smoke exhaust duct, and deploying a smoke barrier roll-up curtain.

In the inverted underground station ventilation smoke exhaust system and method according to the present invention, a public area ventilation smoke exhaust subsystem and a dual-purpose heat dissipation and ventilation smoke exhaust subsystem are arranged based on the specific structure of the inverted underground station, thereby consolidating the design of the ventilation smoke exhaust system. In addition, in the event of a fire in the public area of the station, a stable airflow can be formed in the public area of the platform and from the public area of the station to the ground by selectively exhausting smoke from the public area of the station and exhausting smoke from the public area of the platform. In the event of a fire in the public area of the platform, a stable airflow can be formed from the ground, the public area of the station and from the public area of the platform to the external environment of the station by selectively exhausting air to the public area of the station and exhausting smoke from the public area of the platform. This facilitates ventilation smoke exhaust in the event of a fire in an inverted underground station and the evacuation of personnel inside the station, diversifies ventilation smoke exhaust patterns, and ensures high ventilation smoke exhaust efficiency.
In order to more clearly describe the technical solutions of the present invention or the prior art, the following briefly describes the drawings that need to be used in the description of the embodiments or the prior art. The drawings described in the following description are some embodiments of the present invention, and it is obvious that those skilled in the art can obtain other drawings from these drawings without creative efforts.

FIG. 2 is a schematic diagram of a ventilation smoke exhaust system for an inverted underground station according to the present invention. FIG. 2 is a schematic top view of a station floor according to the present invention. FIG. 2 is a schematic cross-sectional view of a reverse-type underground station when the smoke barrier roll-up curtain according to the present invention is in a drawn-out state. FIG. 2 is a schematic cross-sectional view of an inverted underground station when the smoke barrier roll-up curtain according to the present invention is in a deployed state.

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described clearly and completely below with reference to the drawings of the present invention, but it is clear that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art without creative labor based on the embodiments of the present invention fall within the protection scope of the present invention.

Below, the ventilation and smoke exhaust system for an inverted underground station and the ventilation and smoke exhaust method of the present invention will be described with reference to Figures 1 to 4.

As shown in FIG. 1, the inverted underground station shown in this embodiment includes a platform floor 2, a station building floor 1, and a station building tunnel 31 and a station building tunnel 32 located on the platform floor 2.

Station building tunnels 31 and 32 are provided on both sides of the platform, platform floor 2 is located above station building floor 1, escalators 51 and 52 are provided between platform floor 2 and station building floor 1, platform doors are provided between station building tunnels 31 and 32, and the platform on platform floor 2, and entrance/exit passages 41, 42, 43, and 44 are provided on station building floor 1, providing direct access to the ground.

In the event of a fire at an inverted underground station, the evacuation route for personnel would be from platform floor 2 to station floor 1, then via an entrance/exit passageway connected to station floor 1, to outside the station or above ground.

Regarding the ventilation and smoke exhaust of the above-mentioned inverted underground station and safe evacuation, the ventilation and smoke exhaust system of the inverted underground station in this embodiment is provided with a ventilation and smoke exhaust subsystem for public areas, a dual-purpose smoke exhaust subsystem for heat dissipation and ventilation, a ventilation and smoke exhaust subsystem for entrance and exit passages, and a ventilation and smoke exhaust subsystem for tunnels.

To achieve the ventilation and smoke exhaust function, each subsystem is equipped with an air-smoke exhaust device, which includes a silencer, an air-smoke exhaust fan, an interlock damper, and a cutter, which are provided in the air-smoke exhaust duct, and the silencer, the air-smoke exhaust fan, the interlock damper, and the cutter are provided sequentially in the extension direction of the air-smoke exhaust duct.

The exhaust smoke fan can run forward to extract smoke and reverse to blow air, and vice versa. The exhaust smoke fan is electrically interlocked with the interlock damper, i.e., when the exhaust smoke fan stops operating, the interlock damper is closed, and when the exhaust smoke fan is operating, the interlock damper is opened.

Depending on the functions of the subsystem, the ventilation and smoke exhaust fans may include a common area ventilation and smoke exhaust fan, a dual-purpose heat dissipation and ventilation smoke exhaust fan, a tunnel ventilation and smoke exhaust fan, and an entrance and exit passage ventilation and smoke exhaust fan.

For this reason, the interlock damper installed on the smoke exhaust fan for public areas is the first interlock damper, the interlock damper installed on the smoke exhaust fan for both heat dissipation and ventilation is the second interlock damper, the interlock damper installed on the smoke exhaust fan for tunnels is the third interlock damper, and the interlock damper installed on the smoke exhaust fan for entrance and exit passages is the fourth interlock damper.

The ventilation and smoke exhaust system described in this embodiment is further provided with a first fire detector, a second fire detector, and a third fire detector, the first fire detector being provided in the public area of the station, the second fire detector being provided in the public area of the platform, and the third fire detector being provided in the station tunnel, and each of the first fire detector, the second fire detector, and the third fire detector may be provided in multiples.

In order to achieve early fire warning and automated control of ventilation and smoke exhaust, in this embodiment, the first fire detector, the second fire detector, and the third fire detector are each connected to a control device, and the control device may be connected to a public area ventilation and smoke exhaust subsystem, a dual-purpose heat dissipation and ventilation smoke exhaust subsystem, an entrance and exit passage ventilation and smoke exhaust subsystem, and a tunnel ventilation and smoke exhaust subsystem, respectively.

Below, with reference to Figures 1 to 4, the layout structure of the public area ventilation and smoke exhaust subsystem, the dual-purpose heat dissipation and ventilation smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem in an inverted underground station as shown in this embodiment will be specifically described.

In one example, the public area ventilation and smoke exhaust subsystem includes a first platform public area ventilation and smoke exhaust duct, a first station building public area ventilation and smoke exhaust device, and the first platform public area ventilation and smoke exhaust duct and the first station building public area ventilation and smoke exhaust duct are each connected to the first ventilation and smoke exhaust device.

Here, the first platform public area ventilation and smoke exhaust duct is provided at the top of the platform public area, and the first station building public area ventilation and smoke exhaust duct is provided at the top of the station building public area.

As shown in FIG. 1, in order to ensure the ventilation and smoke exhaust effect, the public area ventilation and smoke exhaust subsystem includes a first public area ventilation and smoke exhaust subsystem and a second public area ventilation and smoke exhaust subsystem, and these two public area ventilation and smoke exhaust subsystems are provided at both ends of the station building, respectively.

The first public area ventilation smoke exhaust subsystem includes first platform public area ventilation smoke exhaust ducts E7 and E8, first station building public area ventilation smoke exhaust ducts E1 and E2, and a first first ventilation smoke exhaust device. The first platform public area ventilation smoke exhaust ducts E7 and E8 are provided at a first end close to the platform public area, and the first station building public area ventilation smoke exhaust ducts E1 and E2 are provided at a first end close to the station building public area.

The first first ventilation smoke exhaust device includes a silencer B1, a public area ventilation smoke exhaust fan A1, a first interlock damper D1, and a cutter C1, which are provided in the ventilation smoke exhaust air duct, and the silencer B1, the public area ventilation smoke exhaust fan A1, the first interlock damper D1, and the cutter C1 are provided sequentially in the extension direction of the ventilation smoke exhaust air duct.

The first platform public area ventilation smoke exhaust ducts E7 and E8 are connected to the ventilation smoke exhaust duct of the first first ventilation smoke exhaust device by the third control damper D17. The first station building public area ventilation smoke exhaust ducts E1 and E2 are connected to the ventilation smoke exhaust duct of the first first ventilation smoke exhaust device by the first control damper D13.

The second public area ventilation smoke exhaust subsystem includes the first platform public area ventilation smoke exhaust ducts E9 and E10, the first station building public area ventilation smoke exhaust ducts E3 and E4, and a second first ventilation smoke exhaust device. The first platform public area ventilation smoke exhaust ducts E9 and E10 are provided at the second end close to the platform public area, and the first station building public area ventilation smoke exhaust ducts E3 and E4 are provided at the second end close to the station building public area.

The second first ventilation smoke exhaust device includes a silencer B2, a public area ventilation smoke exhaust fan A2, a first interlock damper D2, and a cutter C2, which are provided in the ventilation smoke exhaust air duct, and the silencer B2, the public area ventilation smoke exhaust fan A2, the first interlock damper D2, and the cutter C2 are provided sequentially in the extension direction of the ventilation smoke exhaust air duct.

The first platform public area ventilation smoke exhaust ducts E9 and E10 are connected to the ventilation smoke exhaust duct of the second first ventilation smoke exhaust device by the third control damper D18. The first station building public area ventilation smoke exhaust ducts E3 and E4 are connected to the ventilation smoke exhaust duct of the first first ventilation smoke exhaust device by the first control damper D14.

In one example, the dual-purpose heat dissipation and ventilation smoke exhaust subsystem includes a train top smoke exhaust vent duct, a ventilation smoke exhaust duct for the second platform public area, and a ventilation smoke exhaust duct for the second station building public area, and a second ventilation smoke exhaust device, and the train top smoke exhaust vent duct, the ventilation smoke exhaust duct for the second platform public area, and the ventilation smoke exhaust duct for the second station building public area are each connected to the second ventilation smoke exhaust device.

Here, the train top smoke exhaust vent duct is provided at the top of the station building tunnel, and is used mainly to remove heat generated when a train approaches the station and to assist in exhausting smoke from the platform in the event of a fire. The second platform public area ventilation smoke exhaust duct is provided at the top of the platform public area, and the second station building public area ventilation smoke exhaust duct is provided at the top of the station building public area.

As shown in FIG. 1, in order to ensure the ventilation and smoke exhaust effect, the dual-purpose smoke exhaust subsystem includes a first dual-purpose smoke exhaust subsystem and a second dual-purpose smoke exhaust subsystem, and these two dual-purpose smoke exhaust subsystems are installed at both ends of the station building, respectively.

Since two station building tunnels are usually provided on both sides of the platform, the first heat dissipation/air exhaust dual-purpose smoke exhaust subsystem of this embodiment includes train top smoke exhaust vent ducts E13 and E15, second platform public area air exhaust smoke exhaust duct E11, second station building public area air exhaust smoke exhaust duct E5, and the first second air exhaust smoke exhaust device. The train top smoke exhaust vent duct E15 is provided in the station building tunnel 31 and faces the first end position close to the platform public area, and the train top smoke exhaust vent duct E13 is provided in the station building tunnel 32 and faces the first end position close to the platform public area. The second platform public area air exhaust smoke exhaust duct E11 is provided at the first end close to the platform public area, and the second station building public area air exhaust smoke exhaust duct E5 is provided at the first end close to the station building public area.

The first second ventilation and smoke exhaust device includes a silencer B3, a dual-purpose smoke exhaust fan A3, a second interlock damper D3, and a cutter C3, which are provided in the ventilation and smoke exhaust air duct, and the silencer B3, the dual-purpose smoke exhaust fan A3, the second interlock damper D3, and the cutter C3 are provided sequentially in the extension direction of the ventilation and smoke exhaust air duct.

The train top smoke exhaust vent duct E15 is connected to the ventilation smoke exhaust duct of the first second ventilation smoke exhaust device by the fifth control damper D21. The train top smoke exhaust vent duct E13 is connected to the ventilation smoke exhaust duct of the first second ventilation smoke exhaust device by the fifth control damper D23. The second platform public area ventilation smoke exhaust duct E11 is connected to the ventilation smoke exhaust duct of the first second ventilation smoke exhaust device by the fourth control damper D19. The second station building public area ventilation smoke exhaust duct E5 is connected to the ventilation smoke exhaust duct of the first second ventilation smoke exhaust device by the second control damper D15.

For this reason, the second heat dissipation/air supply dual-purpose smoke exhaust subsystem includes train top smoke exhaust vent ducts E14 and E16, second platform public area air supply smoke exhaust duct E12, second station building public area air supply smoke exhaust duct E6, and a second second air supply smoke exhaust device. The train top smoke exhaust vent duct E16 is provided in the station building tunnel 31 and faces the second end position close to the platform public area, and the train top smoke exhaust vent duct E14 is provided in the station building tunnel 32 and faces the second end position close to the platform public area. The second platform public area air supply smoke exhaust duct E12 is provided at the second end close to the platform public area, and the second station building public area air supply smoke exhaust duct E6 is provided at the second end close to the station building public area.

The second second ventilation smoke exhaust device includes a silencer B4, a dual-purpose smoke exhaust fan A4 for both heat dissipation and ventilation, a second interlock damper D4, and a cutter C4, which are arranged in the ventilation smoke exhaust air duct, and the silencer B4, the dual-purpose smoke exhaust fan A4 for both heat dissipation and ventilation, the second interlock damper D4, and the cutter C4 are arranged sequentially in the extension direction of the ventilation smoke exhaust air duct.

The train top smoke exhaust vent duct E16 is connected to the ventilation smoke exhaust duct of the second second ventilation smoke exhaust device by the fifth control damper D22. The train top smoke exhaust vent duct E14 is connected to the ventilation smoke exhaust duct of the second second ventilation smoke exhaust device by the fifth control damper D24. The second platform public area ventilation smoke exhaust duct E12 is connected to the ventilation smoke exhaust duct of the second second ventilation smoke exhaust device by the fourth control damper D20. The second station building public area ventilation smoke exhaust duct E6 is connected to the ventilation smoke exhaust duct of the second second ventilation smoke exhaust device by the second control damper D16.

In one example, the entrance/exit passage ventilation smoke exhaust subsystem includes an entrance/exit passage ventilation smoke exhaust duct and a third ventilation smoke exhaust device, and the entrance/exit passage ventilation smoke exhaust duct is connected to the third ventilation smoke exhaust device. The station building is provided with at least two entrance/exit passages that directly access the ground, and one entrance/exit passage ventilation smoke exhaust subsystem is provided for each entrance/exit passage.

As shown in FIG. 1, the station building of this embodiment has four entrance and exit passages that directly access the ground, and the ventilation and smoke exhaust subsystems for the four entrance and exit passages are arranged in one-to-one correspondence with the four entrance and exit passages.

For example, in this embodiment, a first entrance/exit passage ventilation smoke exhaust subsystem is disposed in the entrance/exit passage 41, and the first entrance/exit passage ventilation smoke exhaust subsystem includes an entrance/exit passage ventilation smoke exhaust duct E17 and a first third ventilation smoke exhaust device.

The first third ventilation smoke exhaust device includes a silencer B9, an entrance/exit passage ventilation smoke exhaust fan A9, a fourth interlock damper D9, and a cutter C9, which are provided in the ventilation smoke exhaust air duct. The silencer B9, the entrance/exit passage ventilation smoke exhaust fan A9, the fourth interlock damper D9, and the cutter C9 are sequentially arranged in the extension direction of the ventilation smoke exhaust air duct.

The entrance/exit passage ventilation smoke exhaust duct E17 is provided at the top of the entrance/exit passage 41, and is provided in the extension direction of the entrance/exit passage 41. The entrance/exit passage ventilation smoke exhaust duct E17 is connected to the ventilation smoke exhaust air duct of the first third ventilation smoke exhaust device by the sixth control damper D25.

In this embodiment, a second entrance/exit passage ventilation smoke exhaust subsystem is disposed in the entrance/exit passage 42, and the second entrance/exit passage ventilation smoke exhaust subsystem includes an entrance/exit passage ventilation smoke exhaust duct E18 arranged along the entrance/exit passage 42, and the entrance/exit passage ventilation smoke exhaust duct E18 is connected to the second third ventilation smoke exhaust device by a sixth control damper D26. The second third ventilation smoke exhaust device includes a silencer B10 provided in the ventilation smoke exhaust air duct, an entrance/exit passage ventilation smoke exhaust fan A10, a fourth interlock damper D10, and a Kutawa C10.

In this embodiment, a third entrance/exit passage ventilation smoke exhaust subsystem is disposed in the entrance/exit passage 43, and the third entrance/exit passage ventilation smoke exhaust subsystem includes an entrance/exit passage ventilation smoke exhaust duct E19 arranged along the entrance/exit passage 43, and the entrance/exit passage ventilation smoke exhaust duct E19 is connected to the third third ventilation smoke exhaust device by a sixth control damper D27. The third third ventilation smoke exhaust device includes a silencer B11 provided in the ventilation smoke exhaust air duct, an entrance/exit passage ventilation smoke exhaust fan A11, a fourth interlock damper D11, and a Kutawa C11.

In this embodiment, a fourth entrance/exit passage ventilation smoke exhaust subsystem is disposed in the entrance/exit passage 44, and the fourth entrance/exit passage ventilation smoke exhaust subsystem includes an entrance/exit passage ventilation smoke exhaust duct E20 arranged along the entrance/exit passage 44, and the entrance/exit passage ventilation smoke exhaust duct E20 is connected to the fourth third ventilation smoke exhaust device by a sixth control damper D28. The fourth third ventilation smoke exhaust device includes a silencer B12 provided in the ventilation smoke exhaust air duct, an entrance/exit passage ventilation smoke exhaust fan A12, a fourth interlock damper D12, and a kutawa C12.

In one example, the tunnel ventilation smoke exhaust subsystem includes a tunnel ventilation smoke exhaust outlet and a fourth ventilation smoke exhaust device, and the tunnel ventilation smoke exhaust outlet is connected to the fourth ventilation smoke exhaust device.

As shown in FIG. 1, the fourth air-smoke exhaust device of the first tunnel air-smoke exhaust subsystem includes a tunnel air-smoke exhaust outlet F1 and a fourth air-smoke exhaust device, and the tunnel air-smoke exhaust outlet F1 is connected to the fourth air-smoke exhaust device.

Here, the fourth ventilation smoke exhaust device includes a silencer B5, a tunnel ventilation smoke exhaust fan A5, a third interlock damper D5, and a cutter C5, which are provided in the ventilation smoke exhaust air duct, and the silencer B5, the tunnel ventilation smoke exhaust fan A5, the third interlock damper D5, and the cutter C5 are provided sequentially in the extension direction of the ventilation smoke exhaust air duct, and the tunnel ventilation smoke exhaust outlet F1 is connected to the ventilation smoke exhaust air duct of the fourth ventilation smoke device.

Since station building tunnels 31 and 32 are provided on both sides of the platform, in this embodiment, four tunnel ventilation and smoke exhaust subsystems are provided for these two station building tunnels, and the tunnel ventilation and smoke exhaust outlet F1 of the first tunnel ventilation and smoke exhaust subsystem may be provided at the first end of station building tunnel 31.

For this reason, in this embodiment, the tunnel ventilation smoke exhaust outlet F2 of the second tunnel ventilation smoke exhaust subsystem is provided at the second end of the station tunnel 31. The second tunnel ventilation smoke exhaust subsystem includes the tunnel ventilation smoke exhaust outlet F2, silencer B7, tunnel ventilation smoke exhaust fan A7, third interlock damper D7, and Kutawa C7, which are provided in sequence along the ventilation smoke exhaust air duct.

For this reason, in this embodiment, the tunnel ventilation smoke exhaust outlet F3 of the third tunnel ventilation smoke exhaust subsystem is provided at the first end of the station building tunnel 32. The third tunnel ventilation smoke exhaust subsystem includes the tunnel ventilation smoke exhaust outlet F3, silencer B6, tunnel ventilation smoke exhaust fan A6, third interlock damper D6, and kutawa C6, which are provided in sequence along the ventilation smoke exhaust air duct.

For this reason, in this embodiment, the tunnel ventilation smoke exhaust outlet F4 of the fourth tunnel ventilation smoke exhaust subsystem is provided at the second end of the station building tunnel 32. The fourth tunnel ventilation smoke exhaust subsystem includes the tunnel ventilation smoke exhaust outlet F4, silencer B8, tunnel ventilation smoke exhaust fan A8, third interlock damper D8, and kutawa C8, which are provided in sequence along the ventilation smoke exhaust air duct.

In some examples, the present embodiment of the ventilation smoke exhaust system further includes a smoke-blocking roll-up curtain located on the station floor of the underground station and near the escalator.

As shown in Figures 2 to 4, when escalators 51 and 52 are provided between the station building and the platform, smoke-blocking roll-up curtains 61, 62, and 63 are provided on the left, right, and rear sides, respectively, of escalator 51. Smoke-blocking roll-up curtains 64, 65, and 66 are provided on the left, right, and rear sides, respectively, of escalator 52.

Here, the smoke roll-up curtain has a retracted state and an expanded state. In an inverted underground station where no fire occurs, the smoke roll-up curtain is in the retracted state and is located at the top of the station floor.

In an inverted underground station where a fire has broken out, the smoke curtain is in an unfolded state, the upper end of the smoke curtain is located at the top of the station floor, the lower end of the smoke curtain falls to the bottom of the station floor, and the lower end of the smoke curtain may be configured to contact the ground corresponding to the bottom of the station floor, so that the smoke curtain surrounds the left, right, and rear sides of the escalator and exposes the escalator entrance at the front of the escalator, thereby ensuring the flow speed of the airflow inside the station when it flows along the escalator, and contributing to the rapid evacuation of personnel on the platform to the station using the escalator.

In view of the above, in the present invention, a ventilation and smoke exhaust subsystem for public areas, a dual-purpose ventilation and heat exhaust subsystem, a ventilation and smoke exhaust subsystem for entrance and exit passages, and a ventilation and smoke exhaust subsystem for tunnels are provided, and by cooperation of these subsystems, if a fire occurs in the public area of the station building of an inverted underground station, the flow direction of the airflow within the station building can be changed from station building tunnel → platform public area → station building public area → entrance and exit passage → ground level, and the flow speed from the platform to the escalator of the station building can be increased to more than 1.5 m/s, and if a fire occurs in the public area of the platform, the flow direction of the airflow within the station building can be changed from ground level → entrance and exit passage → station building public area → platform public area → station building tunnel, and the upward flow speed from the platform to the escalator of the station building can be increased to more than 1.5 m/s, ensuring the safe evacuation of personnel within the station.

Furthermore, the present invention consolidates the design of the station building's ventilation and smoke exhaust system, facilitates ventilation and smoke exhaust in the event of a fire in an inverted underground station, diversifies ventilation and smoke exhaust patterns, and ensures high ventilation and smoke exhaust efficiency.

According to the reverse-type underground station ventilation and smoke exhaust system shown in the above embodiment, if a fire breaks out in the public area of the station, this embodiment exhausts smoke from the public area of the station, exhausts smoke from the entrance and exit passages, blows air to the public area of the platform, and blows air to the station tunnel, thereby changing the flow direction of airflow within the station from the station tunnel → public area of the platform → public area of the station → entrance and exit passages → ground level, and increases the downward flow speed of airflow from the platform to the escalator in the station to more than 1.5 m/s.

In the first example, the smoke exhaust method for a fire in a public area of a station in this embodiment is as follows:
In the event of a fire occurring in the public area of the station building, the system controls and starts the public area ventilation and smoke exhaust subsystem, the entrance/exit passage ventilation and smoke exhaust subsystem, the heat dissipation and ventilation dual-purpose smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem, to exhaust smoke from the public area of the station building via the first station building public area ventilation and smoke exhaust duct, assist smoke exhaust with the entrance/exit passage ventilation and smoke exhaust duct, blow air to the platform public area via the second platform public area ventilation and smoke exhaust duct, blow air to the station tunnel from the tunnel ventilation and smoke exhaust outlet, and deploy the smoke-blocking roll-up curtain.

As shown in FIG. 1, if a fire breaks out in the public area of the station building as a result of detection by the first fire detector, in this embodiment, specifically, the following smoke exhaust method may be adopted.

By using an interlocking system, the public area ventilation smoke exhaust fans A1 and A2 and the first interlock dampers D1 and D2 that correspond one-to-one to the public area ventilation smoke exhaust fans A1 and A2 are automatically started, and the first control dampers D13 and D14 are opened to exhaust smoke from the public area of the station building through the station building public area ventilation smoke exhaust ducts E1 to E4.

The interlocking system automatically starts the entrance/exit passage ventilation smoke exhaust fans A9-A12 and the fourth interlock dampers D9-D12 that correspond one-to-one to the entrance/exit passage ventilation smoke exhaust fans A9-A12, and opens the sixth control dampers D25-D28 to assist in smoke exhaust through the entrance/exit passage ventilation smoke exhaust ducts E17-E20.

By using an interlocking system, the dual-purpose smoke exhaust fans A3 and A4 for heat dissipation and ventilation, and the second interlock dampers D3 and D4 that correspond one-to-one to the dual-purpose smoke exhaust fans A3 and A4 for heat dissipation and ventilation are automatically started, and the fourth control dampers D19 and D20 are opened to blow air into the public area of the platform via the second smoke exhaust ducts E11 and E12 for the public area of the platform.

The interlocking system automatically starts the tunnel ventilation and smoke exhaust fans A5-A8 and the third interlock dampers D5-D8, which correspond one-to-one to the tunnel ventilation and smoke exhaust fans A5-A8, and blows air into the station tunnel through the tunnel ventilation and smoke exhaust fan outlets F1-F4, allowing the air in the station tunnel to enter the public area on the platform through the gaps between the platform doors, thereby maintaining a positive air pressure in the public area on the platform.

The second control dampers D15 and D16, the third control dampers D17 and D18, and the fifth control dampers D21 to D24 are automatically closed using an interlocking system.

The interlocking system automatically controls the smoke-blocking roll-up curtains 61-66 to deploy, exposing only the escalator entrances at the front of the escalators 51 and 52, ensuring that the air in the public area of the platform flows downward along the extension direction of the escalators 51 and 52 into the public area of the station building, creating a stable airflow field with a flow velocity exceeding 1.5 m/s.

In the second example, the smoke exhaust method for a fire in a public area of a station building according to the present embodiment is as follows:
In the event of a fire occurring in the public area of the station building, the system controls and starts the public area ventilation and smoke exhaust subsystem, the entrance/exit passage ventilation and smoke exhaust subsystem, the heat dissipation and ventilation dual-purpose smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem, exhausting smoke from the public area of the station building via the second station building public area ventilation and smoke exhaust duct, assisting in the smoke exhaust by the entrance/exit passage ventilation and smoke exhaust duct, blowing air to the platform public area via the first platform public area ventilation and smoke exhaust duct, blowing air to the station tunnel from the tunnel ventilation and smoke exhaust outlet, and deploying the smoke-blocking roll-up curtain.

As shown in FIG. 1, if a fire breaks out in the public area of the station building as a result of detection by the first fire detector, in this embodiment, specifically, the following smoke exhaust method may be adopted.

By using an interlocking system, the dual-purpose smoke exhaust fans A3 and A4 and the second interlock dampers D3 and D4 that correspond one-to-one to the dual-purpose smoke exhaust fans A3 and A4 are automatically started, and the second control dampers D15 and D16 are opened to exhaust smoke from the public area of the station building through the second smoke exhaust ducts E5 and E6 for the public area of the station building.

The interlocking system automatically starts the entrance/exit passage ventilation smoke exhaust fans A9-A12 and the fourth interlock dampers D9-D12 that correspond one-to-one to the entrance/exit passage ventilation smoke exhaust fans A9-A12, and opens the sixth control dampers D25-D28 to assist in smoke exhaust through the entrance/exit passage ventilation smoke exhaust ducts E17-E20.

By using an interlocking system, the public area ventilation smoke exhaust fans A1 and A2 and the first interlock dampers D1 and D2 that correspond one-to-one to the public area ventilation smoke exhaust fans A1 and A2 are automatically started, and the third control dampers D17 and D18 are opened to blow air into the public area of the platform via the first platform public area ventilation smoke exhaust ducts E7 to E10.

The interlocking system automatically starts the tunnel ventilation and smoke exhaust fans A5-A8 and the third interlock dampers D5-D8, which correspond one-to-one to the tunnel ventilation and smoke exhaust fans A5-A8, and blows air into the station tunnel through the tunnel ventilation and smoke exhaust fan outlets F1-F4, allowing the air in the station tunnel to enter the public area on the platform through the gaps between the platform doors, thereby maintaining a positive air pressure in the public area on the platform.

The first control dampers D13 and D14, the fourth control dampers D19 and D20, and the fifth control dampers D21 to D24 are automatically closed using an interlocking system.

The interlocking system automatically controls the smoke-blocking roll-up curtains 61-66 to deploy, exposing only the escalator entrances at the front of the escalators 51 and 52, ensuring that the air in the public area of the platform flows downward along the extension direction of the escalators 51 and 52 into the public area of the station building, creating a stable airflow field with a flow velocity exceeding 1.5 m/s.

According to the reverse-type underground station ventilation and smoke exhaust system shown in the above embodiment, if a fire breaks out in the public area of the platform, in this embodiment, smoke is exhausted from the public area of the platform, air is sent to the public area of the station building, air is sent to the entrance and exit passages, and smoke is exhausted from the station building tunnel, so that the direction of air flow within the station building can be changed from ground level to entrance and exit passages to the public area of the station building to the public area of the platform to the station building tunnel, and the upward flow speed of the air flow from the station building to the escalator on the platform can be increased to more than 1.5 m/s.

In the first example, the smoke exhaust method for a fire in a public area of a platform according to the present embodiment is as follows:
In the event of a fire occurring in the public area of the platform, the system controls and starts the public area ventilation and smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, the dual-purpose heat dissipation and ventilation smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem, exhausting smoke from the public area of the platform via the second platform public area ventilation and smoke exhaust duct, assisting in the exhaust of smoke by the tunnel ventilation and smoke exhaust outlet, blowing air to the public area of the station building via the first station building public area ventilation and smoke exhaust duct, supplying air via the entrance and exit passage ventilation and smoke exhaust duct, and deploying a smoke-blocking roll-up curtain.

As shown in FIG. 1, if a fire occurs in the public area of the platform as a result of detection by the second fire detector, in this embodiment, specifically, the following smoke exhaust method may be adopted.

By using an interlocking system, the dual-purpose smoke exhaust fans A3 and A4 for heat dissipation and ventilation, and the second interlock damper that corresponds one-to-one to the dual-purpose smoke exhaust fans A3 and A4 for heat dissipation and ventilation are automatically started, and the fourth control dampers D19 and D20 are opened to exhaust smoke from the public area of the platform via the second smoke exhaust ducts E11 and E12 for the public area of the platform.

The interlocking system automatically starts the tunnel exhaust smoke fans A5-A8 and the third interlock dampers D5-D8, which correspond one-to-one to the tunnel exhaust smoke fans A5-A8, to help exhaust smoke through the tunnel exhaust smoke fan outlets F1-F4, so that smoke in the public area of the platform enters the station tunnel through the gaps between the platform doors and is then exhausted outside the station tunnel by the action of the tunnel exhaust smoke fans A5-A8.

By using the interlocking system, the public area ventilation smoke exhaust fans A1 and A2 and the first interlock dampers D1 and D2 that correspond one-to-one to the public area ventilation smoke exhaust fans A1 and A2 are automatically started, and the first control dampers D13 and D14 are opened to blow air into the public area of the station building through the first station building public area ventilation smoke exhaust ducts E1 to E4.

The interlocking system automatically starts the entrance/exit passage ventilation smoke exhaust fans A9-A12 and the fourth interlock dampers D9-D12 that correspond one-to-one to the entrance/exit passage ventilation smoke exhaust fans A9-A12, opens the sixth control dampers D25-D28, and supplies air through the entrance/exit passage ventilation smoke exhaust ducts E17-E20.

The third control dampers D17 and D18, the second control dampers D15 and D16, and the fifth control dampers D21 to D24 are automatically closed using an interlocking system.

The interlocking system automatically controls the smoke-blocking roll-up curtains 61-66 to deploy, exposing only the escalator entrances at the front of the escalators 51 and 52, ensuring that the air in the public area of the station flows upward along the extension direction of the escalators 51 and 52 to the public area of the platform, creating a stable airflow field with a flow velocity exceeding 1.5 m/s.

In the second example, the smoke exhaust method for a fire in a public area of a platform according to the present embodiment is as follows:
In the event of a fire occurring in the public area of the platform, the system controls and starts the public area ventilation and smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, the dual-purpose heat dissipation and ventilation smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem, to exhaust smoke from the public area of the platform via the first platform public area ventilation and smoke exhaust duct, to assist in the exhaust of smoke by the tunnel ventilation and smoke exhaust outlet, to supply air to the public area of the station building via the second station building public area ventilation and smoke exhaust duct, to supply air via the entrance and exit passage ventilation and smoke exhaust duct, and to deploy a smoke-blocking roll-up curtain.

As shown in FIG. 1, if a fire occurs in the public area of the platform as a result of detection by the second fire detector, in this embodiment, specifically, the following smoke exhaust method may be adopted.

By using an interlocking system, the public area ventilation smoke exhaust fans A1 and A2 and the first interlock dampers D1 and D2 that correspond one-to-one to the public area ventilation smoke exhaust fans A1 and A2 are automatically started, and the third control dampers D17 and D18 are opened to exhaust smoke from the public area of the platform via the first public area ventilation smoke exhaust ducts E7 to E10.

The interlocking system automatically starts the tunnel exhaust smoke fans A5-A8 and the third interlock dampers D5-D8, which correspond one-to-one to the tunnel exhaust smoke fans A5-A8, to help exhaust smoke through the tunnel exhaust smoke fan outlets F1-F4, so that smoke in the public area of the platform enters the station tunnel through the gaps between the platform doors and is then exhausted outside the station tunnel by the action of the tunnel exhaust smoke fans A5-A8.

By using an interlocking system, the dual-purpose smoke exhaust fans A3 and A4 and the second interlock dampers D3 and D4 that correspond one-to-one to the dual-purpose smoke exhaust fans A3 and A4 are automatically started, and the second control dampers D15 and D16 are opened to blow air into the public area of the station building through the second smoke exhaust ducts E5 and E6 for the public area of the station building.

The interlocking system automatically starts the entrance/exit passage ventilation smoke exhaust fans A9-A12 and the fourth interlock dampers D9-D12 that correspond one-to-one to the entrance/exit passage ventilation smoke exhaust fans A9-A12, opens the sixth control dampers D25-D28, and supplies air through the entrance/exit passage ventilation smoke exhaust ducts E17-E20.

The first control dampers D13 and D14, the fourth control dampers D19 and D20, and the fifth control dampers D21 to D24 are automatically closed using an interlocking system.

The interlocking system controls the smoke-blocking roll-up curtains 61-66 to be deployed, exposing only the escalator entrances at the front of the escalators 51 and 52, thereby ensuring that the air in the public area of the station flows upward along the extension direction of the escalators 51 and 52 to the public area of the platform, creating a stable airflow field with a flow velocity exceeding 1.5 m/s.

According to the reverse-type underground station ventilation and smoke exhaust system shown in the above embodiment, if a fire breaks out in the station tunnel, this embodiment exhausts smoke from the station tunnel, exhausts smoke from the public area of the platform, blows air to the public area of the station, and blows air to the entrance and exit passages, so that the airflow direction within the station can be changed from ground level to entrance and exit passages to the public area of the station to the public area of the platform to the station tunnel.

Under these operating conditions, it is generally not required that the upward airflow velocity from the platform to the station escalator exceed 1.5 m/s.

In the first example, the smoke exhaust method for a station tunnel fire of this embodiment is as follows:
In the event of a fire in a station tunnel, the system controls and starts the public area ventilation and smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, the dual-purpose heat dissipation and ventilation smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem, exhausting smoke via the smoke vent duct on the top of the train, assisting in smoke exhaust by the tunnel ventilation and smoke exhaust outlet, exhausting smoke from the public area of the platform via the first platform public area ventilation and smoke exhaust duct, supplying air via the entrance and exit passage ventilation and smoke exhaust duct, and deploying the smoke-blocking roll-up curtain.

As shown in FIG. 1, if a fire breaks out in the station tunnel 31 as a result of detection by the third fire detector, in this embodiment, specifically, the following smoke evacuation method may be adopted.

By using an interlocking system, the dual-purpose smoke exhaust fans A3 and A4, as well as the second interlock dampers D3 and D4, which correspond one-to-one to the dual-purpose smoke exhaust fans A3 and A4, are automatically started, and the fifth control dampers D21 and D22 are opened to exhaust smoke through the smoke exhaust vent ducts E15 and E16 on the top of the train.

The interlocking system automatically starts tunnel ventilation smoke exhaust fans A5 and A7, as well as D5 and D7, which correspond one-to-one to tunnel ventilation smoke exhaust fans A5 and A7, and assists in smoke exhaust through tunnel ventilation smoke outlets F1 and F2.

Here, in consideration of the possibility that smoke may spread from the station tunnel into the public area of the platform when the platform doors are opened to allow passengers to evacuate, the system automatically activates the public area smoke exhaust fans A1 and A2 and the first interlock dampers D1 and D2, which correspond one-to-one to the public area smoke exhaust fans A1 and A2, by using an interlocking system, and opens the third control dampers D17 and D18 to exhaust smoke from the public area of the platform via the first platform public area smoke exhaust ducts E7 to E10.

The interlocking system automatically starts the entrance/exit passage ventilation smoke exhaust fans A9-A12 and the fourth interlock dampers D9-D12 that correspond one-to-one to the entrance/exit passage ventilation smoke exhaust fans A9-A12, opens the sixth control dampers D25-D28, and supplies air through the entrance/exit passage ventilation smoke exhaust ducts E17-E20.

The interlocking system automatically closes the tunnel ventilation smoke exhaust fans A6 and A8, and the third interlock dampers D6 and D8 that correspond one-to-one to the tunnel ventilation smoke exhaust fans A6 and A8.

The interlocking system automatically closes the first control dampers D13 and D14, the fourth control dampers D19 and D20, the second control dampers D15 and D16, and the fifth control dampers D23 to D24.

The interlocking system controls the smoke-blocking roll-up curtains 61-66 to deploy, exposing only the escalator entrances at the front of escalators 51 and 52, thereby ensuring that air in the public area of the station flows upward along the extension direction of escalators 51 and 52 to the public area of the platform, facilitating the evacuation of personnel in the station.

In the second example, the smoke exhaust method for a station tunnel fire of this embodiment is as follows:
In the event of a fire in a station tunnel, the system controls and starts the public area ventilation and smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, the dual-purpose heat dissipation and ventilation smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem, exhausting smoke through the smoke exhaust vent duct on the top of the train, exhausting smoke from the platform public area through the second platform public area ventilation and smoke exhaust duct, assisting smoke exhaust by the tunnel ventilation and smoke exhaust outlet, blowing air to the station public area through the first station public area ventilation and smoke exhaust duct, supplying air through the entrance and exit passage ventilation and smoke exhaust duct, and deploying the smoke-blocking roll-up curtain.

As shown in FIG. 1, if a fire breaks out in the station tunnel 31 as a result of detection by the third fire detector, in this embodiment, specifically, the following smoke evacuation method may be adopted.

By using an interlocking system, the dual-purpose smoke exhaust fans A3 and A4 for heat dissipation and ventilation, and the second interlock dampers D3 and D4 that correspond one-to-one to the dual-purpose smoke exhaust fans A3 and A4 for heat dissipation and ventilation are automatically started, the fifth control dampers D21 and D22 are opened to exhaust smoke through the train top smoke exhaust vent ducts E15 and E16, and the fourth control dampers D19 and D20 are opened to exhaust smoke from the public area of the platform through the second platform public area ventilation smoke exhaust ducts E11 and E12.

The interlocking system automatically starts the tunnel ventilation smoke exhaust fans A5 and A7, as well as the third interlock dampers D5 and D7 that correspond one-to-one to the tunnel ventilation smoke exhaust fans A5 and A7, and assists in smoke exhaust through the tunnel ventilation smoke outlets F1 and F2.

By using the interlocking system, the public area ventilation smoke exhaust fans A1 and A2 and the first interlock dampers D1 and D2 that correspond one-to-one to the public area ventilation smoke exhaust fans A1 and A2 are automatically started, and the first control dampers D13 and D14 are opened to blow air into the public area of the station building through the first station building public area ventilation smoke exhaust ducts E1 to E4.

The interlocking system automatically starts the entrance/exit passage ventilation smoke exhaust fans A9-A12 and the fourth interlock dampers D9-D12 that correspond one-to-one to the entrance/exit passage ventilation smoke exhaust fans A9-A12, opens the sixth control dampers D25-D28, and supplies air through the entrance/exit passage ventilation smoke exhaust ducts E17-E20.

The interlocking system automatically closes the tunnel ventilation smoke exhaust fans A6 and A8, and the third interlock dampers D6 and D8 that correspond one-to-one to the tunnel ventilation smoke exhaust fans A6 and A8.

The third control dampers D17 and D18, the second control dampers D15 and D16, and the fifth control dampers D23 to D24 are automatically closed using an interlocking system.

The interlocking system automatically controls the smoke-blocking roll-up curtains 61-66 to deploy, exposing only the escalator entrances at the front of escalators 51 and 52, thereby ensuring that air in the public area of the station flows upward along the extension direction of escalators 51 and 52 to the public area of the platform, facilitating the evacuation of personnel in the station.

It should be noted that the above examples are only used to explain the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the above examples, those skilled in the art should understand that the technical solutions described in each of the above examples can be modified or some of the technical features can be replaced with equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each of the embodiments of the present invention.

1 Station floor 2 Platform floor 31-32 Station tunnel 41-44 Entrance/exit passage 51-52 Escalator 61-66 Smoke-blocking roll-up curtain A1-A2 Public area smoke exhaust fan A3-A4 Dual-purpose heat dissipation/exhaust smoke fan A5-A8 Tunnel smoke exhaust fan A9-A12 Entrance/exit passage smoke exhaust fan B1-B12 Silencer C1-C12 Kutawa D1-D2 1st interlock damper D3-D4 2nd interlock damper D5-D8 3rd interlock damper D9-D12 4th interlock damper D13-D14 1st control damper D15-D16 2nd control damper D17-D18 3rd control damper D19-D20 4th control damper D21-D24 Fifth control damper D25~D28 Sixth control damper E1~E4 Air supply smoke exhaust duct for public areas of the first station building E5~E6 Air supply smoke exhaust duct for public areas of the second station building E7~E10 Air supply smoke exhaust duct for public areas of the first platform E11~E12 Air supply smoke exhaust duct for public areas of the second platform E13~E16 Smoke exhaust vent duct on top of train E17~E20 Air supply smoke exhaust duct for entrance/exit passages F1~F4 Air supply smoke exhaust outlet for tunnel

Claims (8)

A ventilation and smoke exhaust system for an inverted underground station, comprising:
Includes a smoke exhaust subsystem for public areas and a smoke exhaust subsystem for both heat and ventilation,
the public area ventilation smoke exhaust subsystem includes a first platform public area ventilation smoke exhaust duct, a first station building public area ventilation smoke exhaust duct, and a first ventilation smoke exhaust device, the first platform public area ventilation smoke exhaust duct and the first station building public area ventilation smoke exhaust duct each communicate with the first ventilation smoke exhaust device,
the heat dissipation/air supply dual-purpose smoke exhaust subsystem includes a train top smoke exhaust vent duct, a second platform public area air supply smoke exhaust duct, a second station building public area air supply smoke exhaust duct, and a second air supply smoke exhaust device, the train top smoke exhaust vent duct, the second platform public area air supply smoke exhaust duct, and the second station building public area air supply smoke exhaust duct each communicate with the second air supply smoke exhaust device;
This is a smoke exhaust ventilation system for an inverted underground station. further comprising an entrance passageway ventilation smoke exhaust subsystem;
The entrance/exit passage ventilation smoke exhaust subsystem includes an entrance/exit passage ventilation smoke exhaust duct and a third ventilation smoke exhaust device, and the entrance/exit passage ventilation smoke exhaust duct is connected to the third ventilation smoke exhaust device.
The ventilation and smoke exhaust system for an inverted underground station according to claim 1. a tunnel ventilation smoke exhaust subsystem;
The tunnel ventilation smoke exhaust subsystem includes a tunnel ventilation smoke exhaust outlet and a fourth ventilation smoke exhaust device, and the tunnel ventilation smoke exhaust outlet is connected to the fourth ventilation smoke exhaust device.
The ventilation and smoke exhaust system for an inverted underground station according to claim 1. The inverted underground station further includes a smoke blocking roll-up curtain installed on the station floor and having a drawn-out state and an expanded state;
In the inverted underground station where no fire occurs, the smoke-blocking roll-up curtain is in a drawn-out state, and in the inverted underground station where a fire occurs, the smoke-blocking roll-up curtain is in an expanded state, and the smoke-blocking roll-up curtain is provided to surround the left side, right side, and rear side of the escalator, and exposes the escalator entrance at the front side of the escalator.
The ventilation and smoke exhaust system for an inverted underground station according to claim 1. The train further includes a first fire detector, a second fire detector, and a third fire detector, wherein the first fire detector is provided in a station public area, the second fire detector is provided in a platform public area, and the third fire detector is provided in a station tunnel.
The ventilation and smoke exhaust system for an inverted underground station according to claim 1. A smoke exhaust method for a ventilation and smoke exhaust system of an inverted underground station according to any one of claims 1 to 5,
In the event of a fire occurring in the public area of the station building, control and start the public area ventilation and smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, the heat dissipation and ventilation dual-purpose smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem, exhausting smoke from the public area of the station building via the first station building public area ventilation and smoke exhaust duct, assisting in smoke exhaust with the entrance and exit passage ventilation and smoke exhaust duct, blowing air to the platform public area via the second platform public area ventilation and smoke exhaust duct, blowing air to the station building tunnel from the tunnel ventilation and smoke exhaust outlet, and deploying the smoke blocking roll-up curtain, or When a fire breaks out in the public area of the station building, the system controls and starts the public area ventilation and smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, the dual-purpose heat dissipation and ventilation smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem, exhausting smoke from the public area of the station building through the second station building public area ventilation and smoke exhaust duct, assisting in smoke exhaust with the entrance and exit passage ventilation and smoke exhaust duct, blowing air to the platform public area through the first platform public area ventilation and smoke exhaust duct, blowing air to the station building tunnel from the tunnel ventilation and smoke exhaust outlet, and deploying the smoke blocking roll-up curtain.
A smoke exhaust method for a ventilation smoke exhaust system of an inverted type underground station. A smoke exhaust method for a ventilation and smoke exhaust system of an inverted underground station according to any one of claims 1 to 5,
In the event of a fire occurring in the public area of the platform, control and start the public area ventilation and smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, the heat dissipation and ventilation dual-purpose smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem, exhausting smoke from the public area of the platform via the second platform public area ventilation and smoke exhaust duct, assisting in the exhaust of smoke by the tunnel ventilation and smoke exhaust outlet, blowing air to the public area of the station building via the first station building public area ventilation and smoke exhaust duct, supplying air via the entrance and exit passage ventilation and smoke exhaust duct, and deploying the smoke blocking roll-up curtain; or When a fire breaks out in the public area of the platform, the system controls and starts the public area ventilation and smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, the heat dissipation and ventilation dual-purpose smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem, exhausting smoke from the public area of the platform through the first platform public area ventilation and smoke exhaust duct, assisting in the smoke exhaust by the tunnel ventilation and smoke exhaust outlet, blowing air to the public area of the station building through the second station building public area ventilation and smoke exhaust duct, supplying air through the entrance and exit passage ventilation and smoke exhaust duct, and deploying the smoke blocking roll-up curtain.
A smoke exhaust method for a ventilation smoke exhaust system of an inverted type underground station. A smoke exhaust method for a ventilation and smoke exhaust system of an inverted underground station according to any one of claims 1 to 5,
In the event of a fire occurring in a station tunnel, control and start the public area ventilation and smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, the heat dissipation and ventilation dual-purpose smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem, exhaust smoke through the train top smoke exhaust vent duct, assist smoke exhaust through the tunnel ventilation and smoke exhaust outlet, exhaust smoke from the platform public area through the first platform public area ventilation and smoke exhaust duct, supply air through the entrance and exit passage ventilation and smoke exhaust duct, and deploy the smoke blocking roll-up curtain; or In the event of a fire occurring in a station tunnel, the system controls and starts the public area ventilation and smoke exhaust subsystem, the entrance and exit passage ventilation and smoke exhaust subsystem, the dual-purpose heat dissipation and ventilation smoke exhaust subsystem, and the tunnel ventilation and smoke exhaust subsystem, exhausting smoke through the train top smoke exhaust vent duct, exhausting smoke from the platform public area through the second platform public area ventilation and smoke exhaust duct, assisting smoke exhaust through the tunnel ventilation and smoke exhaust outlet, blowing air to the station public area through the first station public area ventilation and smoke exhaust duct, supplying air through the entrance and exit passage ventilation and smoke exhaust duct, and deploying the smoke blocking roll-up curtain.
A smoke exhaust method for a ventilation smoke exhaust system of an inverted type underground station.