Efficient smoke exhaust system for public area of subway station and smoke exhaust method thereof

Abstract

The application discloses a high-efficiency smoke exhaust system for a public area of a subway station, and relates to the technical field of smoke exhaust systems. The application discloses a high-efficiency smoke exhaust system for a public area of a subway station, and relates to the technical field of smoke exhaust systems.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit subway station fire fighting technology, in particular to an efficient smoke exhaust system for public area of subway station and a smoke exhaust method thereof. BACKGROUND

[0002] Subway is widely used in many countries as an effective tool to relieve urban traffic tension. Due to the narrow space, high airtightness and large flow density of subway, once a fire occurs, it may cause disastrous consequences of mass casualties, which brings extremely adverse effects to the country and society. In fire casualties, smoke poisoning and asphyxiation is the main cause, and the proportion of people really burned to death in the fire is very low. The subway smoke control system plays a very key role in the safety rescue of personnel in subway fire.

[0003] The existing subway station fire smoke exhaust system has great limitations:

[0004] 1) The number of exhaust air outlets in the public area of the station large system is small, and the smoke exhaust area is limited. There is a large area of smoke exhaust blind area in the public area of the station, and the smoke exhaust effect is not ideal.

[0005] 2) In order to improve the smoke exhaust effect of the large area smoke exhaust blind area of the station, it is necessary to improve the smoke exhaust capacity and wind pressure of the smoke exhaust fan of the station large system, which results in large size of the smoke exhaust fan, causing great difficulty in installation and maintenance of the fan. Moreover, the starting peak current of the high-power smoke exhaust fan is large.

[0006] 3) In order to improve the smoke exhaust effect of the large area smoke exhaust blind area of the station, it is necessary to increase the smoke exhaust capacity, and then increase the specification of the smoke exhaust main pipe. Limited by the extremely limited space of the subway underground station, the installation of the comprehensive pipeline is extremely difficult.

[0007] 4) In order to improve the smoke exhaust effect of the large area smoke exhaust blind area of the station, it is necessary to increase the smoke exhaust outlet in the smoke exhaust blind area of the station public area, and increase the range of the smoke exhaust pipe in the public area, which causes great difficulty to the decoration professional of the public area.

[0008] 5) The smoke exhaust outlet in the public area of the station is usually a return air outlet. The increase of the smoke exhaust blind area leads to the short distance between the smoke exhaust outlet and the air supply outlet, causing the short circuit of the air conditioner. SUMMARY

[0009] In order to solve the above problems, the present application aims to provide a high-efficiency public area smoke exhaust system for a subway station, which does not change the original system pipeline, equipment and valve, only adjusts the original exhaust fan and return exhaust fan into double-speed fans, increases some pipeline and valve, and adds a high-efficiency public area smoke exhaust module to solve the technical problems in the background art.

[0010] The smoke exhaust system comprises a station hall layer and a platform layer, the station hall layer is provided with a public area smoke prevention partition one and a public area smoke prevention partition two, and the platform layer is provided with a public area smoke prevention partition three; the connection mode of the public area smoke prevention partition two and the public area smoke prevention partition three is the same as that of the public area smoke prevention partition one and the public area smoke prevention partition three; the interlocking control of the combined air conditioner, the exhaust fan and the return exhaust fan of the subway station is realized through a BAS system and an intelligent low-voltage system.

[0011] Preferably, one ventilation and air conditioning room is arranged at each end of the station, one combined air handling unit AHU-A1 / AHU-B1, one return exhaust fan HPF-A1 / HPF-B1, one exhaust fan PY-A1 / PY-B1, one fresh air fan XF-A1 / XF-B1 and corresponding valve pipelines are arranged in the ventilation and air conditioning room.

[0012] Preferably, the BAS system is specifically controlled in the following manner:

[0013] A. The electrically operated air damper DK-A2 and the air damper DT-A2 are at least one of them confirmed to be fully opened, and then the air handling unit AHU-A1 can be started; if both valves are closed or the opening degree does not reach 100%, the unit cannot be started;

[0014] B. The electrically operated air damper DT-A1 and the air damper DT-A2 are at least one of them confirmed to be fully opened, and then the return and exhaust fan HPF-A1 can be started; if both valves are closed or the opening degree does not reach 100%, the unit cannot be started;

[0015] C. The electrically operated air damper DK-B2 and the air damper DT-B2 are at least one of them confirmed to be fully opened, and then the air handling unit AHU-B1 can be started; if both valves are closed or the opening degree does not reach 100%, the unit cannot be started;

[0016] D. The electrically operated air damper DT-B1 and the air damper DT-B2 are at least one of them confirmed to be fully opened, and then the return and exhaust fan HPF-A1 can be started; if both valves are closed or the opening degree does not reach 100%, the unit cannot be started.

[0017] Preferably, the intelligent low-voltage system is specifically controlled in the following manner:

[0018] a. The electrically operated air damper DK-A1 and the fan XF-A1 are interlocked, if the electrically operated air damper DK-A1 is opened, the fan XF-A1 is opened; if the fan XF-A1 is closed, the electrically operated air damper DK-A1 is closed;

[0019] b. The electrically operated air damper DK-B1 and the fan XF-B1 are interlocked, if the electrically operated air damper DK-B1 is opened, the fan XF-B1 is opened; if the fan XF-B1 is closed, the electrically operated air damper DK-B1 is closed;

[0020] c. The electrically operated air damper DKH-A1 and the fan PY-A1 are interlocked, if the electrically operated air damper DKH-A1 is opened, the fan PY-A1 is opened; if the fan PY-A1 is closed, the electrically operated air damper DKH-A1 is closed;

[0021] d. The electrically operated air damper DKH-B1 and the fan PY-B1 are interlocked, if the electrically operated air damper DKH-B1 is opened, the fan PY-B1 is opened; if the fan PY-B1 is closed, the electrically operated air damper DKH-B1 is closed;

[0022] e. The electrically operated air damper DKH-A4 and the double-speed fan PY / HPF-A1 are interlocked, if the electrically operated air damper DKH-A4 is opened, the double-speed fan PY / HPF-A1 is opened; if the double-speed fan PY / HPF-A1 is closed, the electrically operated air damper DKH-A4 is closed;

[0023] f.Electric air valve DKH-B4 and double-speed fan PY / HPF-B1 interlock, if electric air valve DKH-B4 is on, double-speed fan PY / HPF-B1 is on; if double-speed fan PY / HPF-B1 is off, electric air valve DKH-B4 is off.

[0024] Preferably, the strong smoke exhaust module is increased by the intelligent low-voltage system corresponding interlocking relationship, electric air valve DKH-A4 and double-speed fan PY / HPF-A1 interlock, DKH-B4 and double-speed fan PY / HPF-B1 interlock.

[0025] Preferably, the smoke exhaust method includes the smoke exhaust method in fire condition, including normal smoke exhaust and strong smoke exhaust two modes; the strong smoke exhaust mode includes:

[0026] When the public area smoke prevention partition one catches fire, D6H mode is added: open smoke exhaust fan PY-A1, double-speed fan PY / HPF-A1, electric air valve DKH-A1, DKH-A2, DKH-A4, DKH-A5, DKH-A7 are opened;

[0027] When the public area smoke prevention partition two catches fire, D7H mode is added: open smoke exhaust fan PY-B1, double-speed fan PY / HPF-B1, electric air valve DKH-B1, DKH-B2, DKH-B4, DKH-B5, DKH-B7 are opened;

[0028] When the public area smoke prevention partition three catches fire, D8H mode is added: open smoke exhaust fan PY-A1, PY-A2, double-speed fan PY / HPF-A1, PY / HPF-B1, open electric air valve DKH-A1, DKH-A3, DKH-A4, DKH-A6, DKH-A7, DKH-B1, DKH-B3, DKH-B4, DKH-B6, DKH-B7.

[0029] Preferably, the smoke exhaust method further includes the smoke exhaust method in normal condition, the normal condition contains air conditioning small fresh air, air conditioning full fresh air, ventilation, winter four modes;

[0030] Air conditioning small fresh air condition:

[0031] Mode conversion condition: outdoor air enthalpy h W ≥ Station air enthalpy h A ;

[0032] AHU-A1, AHU-B1, HPF-A1, HPF-B1, XF-A1, XF-B1, DK-A1, DK-B1, DKH-A2, DKH-B2 are opened; DT-A1, DT-A2, DT-B1, DT-B1 are opened correspondingly, the opening angle is completed by on-site debugging, and the rest of the fans and dampers are closed.

[0033] Air conditioning full fresh air working condition:

[0034] Mode conversion condition: outdoor air enthalpy h W Station air enthalpy h A , outdoor temperature t W ≥18℃;

[0035] AHU-A1, AHU-B1, HPF-A1, HPF-B1, DK-A2, DK-B2, DKH-A2, DKH-B2 are opened; DT-A1, DT-A2, DT-B1, DT-B1 are opened correspondingly, the opening angle is completed by on-site debugging, and the rest of the fans and dampers are closed.

[0036] Ventilation working condition:

[0037] Mode conversion condition: outdoor temperature t W <18℃;

[0038] AHU-A1, AHU-B1, HPF-A1, HPF-B1, DK-A2, DK-B2, DKH-A2, DKH-B2 are opened; DT-A1, DT-B1 are opened correspondingly, the opening angle is completed by on-site debugging, and the rest of the fans and dampers are closed.

[0039] Winter working condition:

[0040] Mode conversion condition: station air t N <12℃;

[0041] AHU-A1, AHU-B1, HPF-A1, HPF-B1, XF-A1 / XF-B1, DK-A1, DK-B1, DK-A2, DK-B2, DKH-A2, DKH-B2 are opened; DT-A1, DT-A2, DT-B1, DT-B2 are opened correspondingly, the opening angle is completed by on-site debugging; the corresponding fans and combined air conditioners are frequency conversion, and the rest of the fans and dampers are closed.

[0042] Preferably, the normal smoke exhaust mode of the fire condition comprises:

[0043] D6 mode:

[0044] Mode conversion condition: fire in the public area smoke prevention partition one;

[0045] The smoke exhaust fan PY-A1 is opened, the electric air valve DKH-A1 and DKH-A2 are opened, and the rest of the combined air conditioner, fan and air valve are closed;

[0046] D7 mode:

[0047] Mode conversion condition: fire in the public area smoke prevention partition two;

[0048] The smoke exhaust fan PY-B1 is opened, the electric air valve DKH-B1 and DKH-B2 are opened, and the rest of the combined air conditioner, fan and air valve are closed;

[0049] D8 mode:

[0050] Mode conversion condition: fire in the public area smoke prevention partition three;

[0051] The smoke exhaust fan PY-A1 and PY-B1 are opened, the electric air valve DKH-A1, DKH-A3, DKH-B1 and DKH-B3 are opened, and the rest of the combined air conditioner, fan and air valve are closed.

[0052] Compared with the prior art, the beneficial effects of the present application are:

[0053] The strong smoke exhaust module of the present application is converted into a smoke exhaust mode under a fire condition, and uses the air pipe at the end of the station air supply system and the double-layer shutter air supply port. The strong exhaust mode is opened during a fire, and under the strong exhaust mode, the smoke exhaust amount is larger, the smoke exhaust range is wider, and the smoke exhaust effect is good. The smoke exhaust effect of a large area smoke exhaust blind area of the station is improved, and at the same time, a large amount of space is not occupied and modification is not required. The strong exhaust mode can still be guaranteed to disperse a large amount of smoke. BRIEF DESCRIPTION OF DRAWINGS

[0054] Figure 1 It is a standard underground two-story station smoke prevention and exhaust plane schematic diagram.

[0055] Figure 2 It is a standard underground two-story station public area smoke exhaust system principle diagram.

[0056] Figure 3 It is a high-efficiency smoke exhaust system principle diagram of the underground two-story station public area of the present application.

[0057] Figure 4 It is a standard underground two-story station public area smoke prevention and exhaust system plane schematic diagram.

[0058] Figure 5The figure is a plane schematic diagram of the smoke exhaust system of the public area of the underground two-layer station of the present application. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0060] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The embodiments will be described below according to the overall structure of the present application.

[0061] Please refer to the following figure, the present application provides a technical solution: the standard underground two-layer station public area is divided into three smoke prevention partitions, two station hall layers, one public area smoke prevention partition one, one public area smoke prevention partition two, one platform layer, and one public area smoke prevention partition three. The standard underground two-layer station smoke prevention plane schematic diagram is shown in detail in Figure 1 .

[0062] The application provides the following technical scheme: a high-efficiency smoke exhaust system for a public area of a subway station, which comprises a fresh air shaft in a public area smoke prevention partition one, the fresh air shaft being connected with parallelly connected fan XF-A1 and air valves DK-A1 and DK-A2, the air valve DK-A2 being sequentially connected with a combined air conditioner AHU-A1, an electric air valve DKH-A9, an electric air valve DKH-A5 and a station hall air supply and smoke exhaust pipe, the electric air valve DKH-A9 being further sequentially connected with an electric air valve DKH-A6, a platform air supply and smoke exhaust pipe in a public area smoke prevention partition three; the fresh air shaft is further connected with an electric air volume regulating valve DT-A2 in a strong smoke exhaust module, the electric air volume regulating valve DT-A2 being sequentially connected with an electric air valve DKH-A4, the electric air valve DKH-A4 being sequentially connected with an electric air valve DKH-A10, an electric air volume regulating valve DT-A1 and the combined air conditioner AHU-A1, the electric air valve DKH-A4 being sequentially connected with a double-speed fan PY / HPF-A1 and an electric air valve DKH-A7, the electric air valve DKH-A7 being connected between the electric air valve DKH-A9 and the electric air valve DKH-A5, the double-speed fan PY / HPF-A1 being further sequentially connected with an electric air valve DKH-A8, an electric air valve DKH-A2 and a station hall air exhaust and smoke exhaust pipe; the fresh air shaft is further connected with an electric air valve DKH-A1 in the strong smoke exhaust module, the electric air valve DKH-A1 being sequentially connected with a smoke exhaust fan PY-A1 and an electric air valve DKH-A2, the smoke exhaust fan PY-A1 being sequentially connected with an electric air valve DKH-A3 and a platform air exhaust and smoke exhaust pipe in the public area smoke prevention partition three.

[0063] The fresh air well in the public area smoke prevention partition two is connected with parallel fan XF-B1 and air valve DK-B1, DK-B2, DK-B2 is connected with combined air conditioner AHU-B1, electric air valve DKH-B9, electric air valve DKH-B5 and station hall air supply and smoke exhaust pipe in sequence, electric air valve DKH-B9 is further connected with electric air valve DKH-B6, station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three; the fresh air well is further connected with electric air volume adjusting valve DT-B2 in the strong smoke exhaust module, electric air volume adjusting valve DT-B2 is connected with electric air valve DKH-B4 in sequence, electric air valve DKH-B4 is connected with electric air valve DKH-B10, electric air volume adjusting valve DT-B1 and combined air conditioner AHU-B1 in sequence, electric air valve DKH-B4 is connected with double-speed fan PY / HPF-B1 and electric air valve DKH-B7 in sequence, electric air valve DKH-B7 is connected between electric air valve DKH-B9 and electric air valve DKH-B5, double-speed fan PY / HPF-B1 is further connected with electric air valve DKH-B8, electric air valve DKH-B2 and station hall air supply and smoke exhaust pipe in sequence; the fresh air well is further connected with electric air valve DKH-B1 in the strong smoke exhaust module, electric air valve DKH-B1 is connected with smoke exhaust fan PY-B1 and electric air valve DKH-B2 in sequence, smoke exhaust fan PY-B1 is connected with electric air valve DKH-B3 and station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three in sequence.

[0064] The standard underground two-layer station public area ventilation and air conditioning system adopts a full-air primary return air system, and air conditioning return air and exhaust air are used as smoke exhaust systems. One ventilation and air conditioning machine room is arranged at each end of the station, and one combined air handling unit AHU-A1 / AHU-B1, one return and exhaust fan HPF-A1 / HPF-B1, one smoke exhaust fan PY-A1 / PY-B1 and one fresh air fan XF-A1 / XF-B1, and corresponding air valve pipelines are arranged in the single-end ventilation and air conditioning machine room. The functions and control requirements of the air valve are shown in Table 1.

[0065] The standard underground two-layer station public area ventilation and air conditioning-smoke exhaust system principle diagram is shown in Figure 2 .

[0066] The original smoke exhaust fan PY-A1 / PY-B1 and return and exhaust fan HPF-A1 / HPF-B1 are adjusted to double-speed fan PY / HPF-A1, PY / HPF-B1 on the basis of the original station ventilation and air conditioning / smoke exhaust system. A strong smoke exhaust module is added, that is, two double-speed fans PY / HPF-A1, PY / HPF-B1, high-temperature-resistant electric air valves DKH-A4-A, DKH-B4-B9 and part of the pipelines. The underground two-layer public area ventilation and air conditioning-smoke exhaust system principle diagram of the application is shown in Figure 3 .

[0067] In view of the different fire resistance limits of the smoke exhaust system and the air supply system of the subway station, the air duct, air outlet and air valve of the air supply system of the original subway station participating in the forced exhaust mode need to use products that meet the corresponding fire resistance limit.

[0068] The double-speed fan PY / HPF-A1, PY / HPF-B1 at both ends needs to be set in the smoke exhaust room.

[0069]

[0070] Table 1 Function and control requirements of air valve

[0071] The operation mode of the ventilation and air conditioning-smoke control system in the public area of the station is shown in the table:

[0072] The operation mode of the ventilation and air conditioning-smoke control system in the public area of the standard underground two-story station is shown in Table 2, which is mainly divided into normal working condition, fire working condition and system shutdown, a total of 8 modes D1-D8.

[0073] The D1-D5 modes in the normal working condition and system shutdown of the station are realized through the BAS system, and the D6-D8 modes in the fire working condition are realized through the FAS system.

[0074]

[0075] Note: "K" means open; "G" means closed; "K*" means electric air volume control valve opening control, completed by field debugging;

[0076] Table 2 Operation table of smoke exhaust system in public area of underground two-story station

[0077] (1) System shutdown:

[0078] D1 mode (system shutdown):

[0079] (2) Normal working condition is divided into air conditioning, ventilation and winter working condition, a total of 4 modes D2-D5:

[0080] D2 mode (air conditioning small fresh air working condition):

[0081] Mode conversion condition: outdoor air enthalpy h W ≥ Station air enthalpy h A .

[0082] The two-end combined air conditioner AHU-A1, AHU-B1, return exhaust fan HPF-A1, HPF-B1, fan XF-A1, XF-B1 are opened, and the electric air valve DK-A1, DK-B1 is opened accordingly. The electric air volume regulating valve DT-A1, DT-A2, DT-B1, DT-B1 is opened accordingly, and the opening angle is completed by field debugging. The rest of the fan and air valve are closed.

[0083] D3 mode (air conditioner full fresh air condition) :

[0084] Mode conversion condition: outdoor air enthalpy h W <Station air enthalpy h A , outdoor temperature t W ≥ 18℃.

[0085] Both ends of the combined air conditioner AHU-A1, AHU-B1, return and exhaust fan HPF-A1, HPF-B1, electric air valve DK-A2, DK-B2, DKH-A2, DKH-B2 are opened. Electric air volume regulating valve DT-A1, DT-A2, DT-B1, DT-B1 is opened accordingly, and the opening angle is completed by on-site debugging. The rest of the fans and air valves are closed.

[0086] D4 mode (ventilation condition) :

[0087] Mode conversion condition: outdoor temperature t W <18℃.

[0088] Both ends of the combined air conditioner AHU-A1, AHU-B1, return and exhaust fan HPF-A1, HPF-B1, electric air valve DK-A2, DK-B2, DKH-A2, DKH-B2 are opened. Electric air volume regulating valve DT-A1, DT-B1, is opened accordingly, and the opening angle is completed by on-site debugging. The rest of the fans and air valves are closed.

[0089] D5 mode (winter condition) :

[0090] Mode conversion condition: station air t N <12℃.

[0091] Both ends of the combined air conditioner AHU-A1, AHU-B1, return and exhaust fan HPF-A1, HPF-B1, fan XF-A1 / XF-B1, electric air valve DK-A1, DK-B1, DK-A2, DK-B2, DKH-A2, DKH-B2 are opened. Electric air volume regulating valve DT-A1, DT-A2, DT-B1, DT-B2 is opened accordingly, and the opening angle is completed by on-site debugging; the corresponding fan and combined air conditioner are frequency converted. The rest of the fans and air valves are closed.

[0092] (3) Fire condition, a total of 3 modes (D6-D8) :

[0093] D6 mode (fire condition) :

[0094] Mode conversion condition: fire occurs in public area smoke partition one (station hall layer).

[0095] Exhaust fan PY-A1 is opened, electric damper DKH-A1, DKH-A2 is opened. The rest of the combined air conditioner, fan, damper is closed.

[0096] D7 mode (fire condition):

[0097] Mode conversion condition: fire in public area smoke zone two (station hall layer).

[0098] Exhaust fan PY-B1 is opened, electric damper DKH-B1, DKH-B2 is opened. The rest of the combined air conditioner, fan, damper is closed.

[0099] D8 mode (fire condition):

[0100] Mode conversion condition: fire in public area smoke zone three (platform layer).

[0101] Exhaust fan PY-A1, PY-B1 is opened, electric damper DKH-A1, DKH-A3, DKH-B1, DKH-B3 is opened. The rest of the combined air conditioner, fan, damper is closed.

[0102]

[0103] Note: 'K' means open, 'G' means close, 'K*' means electric damper opening control, completed by field debugging,

[0104] Table 3 Operation table of the underground two-story station public area smoke exhaust system of the application

[0105] The operation modes D0-D8 of the station public area ventilation and air conditioning-smoke prevention and exhaust system of the application are the same as above, and three strong smoke exhaust modes (D6H-D8H) are added in the fire condition. See Table 3 for details.

[0106] The strong smoke exhaust modes (D6H-D8H) newly added in the fire condition of the application are realized through the FAS system.

[0107] D6H mode (fire condition):

[0108] Mode conversion condition: fire in public area smoke zone one (station hall layer).

[0109] Exhaust fan PY-A1, double-speed fan PY / HPF-A1 is opened, electric damper DKH-A1, DKH-A2, DKH-A4, DKH-A5, DKH-A7 is opened. The rest of the combined air conditioner, fan, damper is closed.

[0110] D7H mode (fire condition):

[0111] Mode conversion condition: fire in public area smoke zone two (station hall layer).

[0112] Exhaust fan PY-B1, double-speed fan PY / HPF-B1, electric damper DKH-B1, DKH-B2, DKH-B4, DKH-B5, DKH-B7 are opened. The rest of the combination air conditioner, fan, damper are closed.

[0113] D8H mode (fire condition):

[0114] Mode conversion condition: fire occurs in the third public area smoke control zone (platform layer).

[0115] Exhaust fan PY-A1, PY-A2, double-speed fan PY / HPF-A1, PY / HPF-B1, electric damper DKH-A1, DKH-A3, DKH-A4, DKH-A6, DKH-A7, DKH-B1, DKH-B3, DKH-B4, DKH-B6, DKH-B7 are opened. The rest of the combination air conditioner, fan, damper are closed.

[0116] The plane schematic diagram of the ventilation and air conditioning / anti-smoke exhaust system of the standard underground two-story station public area is shown in Figure 4 . The yellow air pipe is the return / exhaust air pipe, the air conditioning working condition return air pipe, and the fire working condition smoke exhaust pipe. The upper air outlet of the yellow air pipe is the side exhaust air outlet. The blue air pipe is the air supply pipe in the air conditioning working condition, and the air pipe upper air outlet is the double-layer louver air outlet.

[0117] The periphery of the station hall layer is the air conditioning working condition return / exhaust air, and the middle is the air conditioning working condition return / exhaust air and the fire working condition no air supply.

[0118] The air supply pipe and the return / exhaust air pipe of the platform layer are separated at both ends of the station. In the air conditioning working condition, one end supplies air and one end returns / exhausts air. In the fire working condition, one end exhausts smoke, and the other end does not supply air.

[0119] As can be seen, the middle part of the station hall layer and one end of the platform layer of the standard underground two-story station do not have smoke exhaust air pipes and air outlets. The public area smoke exhaust system has a large range of smoke exhaust blind area, and the smoke exhaust effect is poor. In view of the above disadvantages, the plane schematic diagram of the ventilation and air conditioning / anti-smoke exhaust system of the underground two-story station public area of the present application is shown in Figure 5 .

[0120] The air conditioning working condition is the same as described above, and the fire working condition increases three kinds of strong smoke exhaust modes (D6H-D8H). At this time, the station hall layer is provided with smoke exhaust air pipes and air outlets at all positions, and the platform layer is provided with smoke exhaust air pipes and air outlets at both ends. In the strong smoke exhaust working condition, the smoke exhaust range is wide and the effect is good.

[0121] Realization of the station combination air conditioner and fan control logic:

[0122] The combined air conditioner, smoke exhaust fan, return air fan and interlocking control of smoke exhaust fan in subway station are realized by BAS system and intelligent low pressure system. The control relationship of the combined air conditioner and fan in the public area of standard underground two-story station ventilation and air conditioning / smoke control system is as follows:

[0123] (1) BAS system

[0124] The air conditioning unit AHU-A1 can be started only when at least one of the electrically operated air valve DK-A2 and the air valve DT-A2 is confirmed to be fully opened; if both valves are closed or the opening degree does not reach 100%, the unit cannot be started;

[0125] The return air fan HPF-A1 can be started only when at least one of the electrically operated air valve DT-A1 and the air valve DT-A2 is confirmed to be fully opened; if both valves are closed or the opening degree does not reach 100%, the unit cannot be started;

[0126] The air conditioning unit AHU-B1 can be started only when at least one of the electrically operated air valve DK-B2 and the air valve DT-B2 is confirmed to be fully opened; if both valves are closed or the opening degree does not reach 100%, the unit cannot be started;

[0127] The return air fan HPF-A1 can be started only when at least one of the electrically operated air valve DT-B1 and the air valve DT-B2 is confirmed to be fully opened; if both valves are closed or the opening degree does not reach 100%, the unit cannot be started;

[0128] The above logical control relationship is realized by BAS system.

[0129] (2) Intelligent low pressure system

[0130] The electrically operated air valve DK-A1 and the fan XF-A1 are interlocked, if the electrically operated air valve DK-A1 is opened, the fan XF-A1 is opened; if the fan XF-A1 is closed, the electrically operated air valve DK-A1 is closed;

[0131] The electrically operated air valve DK-B1 and the fan XF-B1 are interlocked, if the electrically operated air valve DK-B1 is opened, the fan XF-B1 is opened; if the fan XF-B1 is closed, the electrically operated air valve DK-B1 is closed;

[0132] The electrically operated air valve DKH-A1 and the fan PY-A1 are interlocked, if the electrically operated air valve DKH-A1 is opened, the fan PY-A1 is opened; if the fan PY-A1 is closed, the electrically operated air valve DKH-A1 is closed;

[0133] The electrically operated air valve DKH-B1 and the fan PY-B1 are interlocked, if the electrically operated air valve DKH-B1 is opened, the fan PY-B1 is opened; if the fan PY-B1 is closed, the electrically operated air valve DKH-B1 is closed;

[0134] The above logical control relationship is realized by intelligent low pressure system.

[0135] The application adds a strong smoke exhaust module to the original ventilation and air conditioning / smoke exhaust system of the station, and accordingly increases the interlocking relationship as follows:

[0136] The electric air valve DKH-A4 is interlocked with the double-speed fan PY / HPF-A1, and if the air valve DKH-A4 is opened, the double-speed fan PY / HPF-A1 is opened; if the double-speed fan PY / HPF-A1 is closed, the air valve DKH-A4 is closed.

[0137] The electric air valve DKH-B4 is interlocked with the double-speed fan PY / HPF-B1, and if the electric air valve DKH-B4 is opened, the double-speed fan PY / HPF-B1 is opened; if the double-speed fan PY / HPF-B1 is closed, the electric air valve DKH-B4 is closed.

[0138] The above logical control relationship is realized by an intelligent low-voltage system.

[0139] Compared with the current subway station air conditioning system, the application is a high-efficiency subway station public area smoke exhaust technology based on the original subway station public area ventilation and air conditioning / smoke exhaust system and adding a strong smoke exhaust module.

[0140] The application first adds a strong smoke exhaust module to the original station ventilation and air conditioning / smoke exhaust system, namely two double-speed fans PY / HPF-A1 and PY / HPF-B1 at both ends, high-temperature-resistant electric air valves DKH-A4-A, DKH-B4-B9, and part of the pipeline. The strong smoke exhaust module of the station is connected in parallel with the air conditioning air supply system inlet in the environmental control room, and is switched to the smoke exhaust mode under fire conditions. The air pipe at the end of the station air supply system and the double-layer shutter air supply outlet are used, and the strong exhaust mode is opened during a fire. Under the strong exhaust mode, the smoke exhaust capacity is larger, the smoke exhaust range is wider, and the smoke exhaust effect is better.

[0141] The strong smoke exhaust module added to the original station ventilation and air conditioning / smoke exhaust system needs to increase the interlocking relationship through an intelligent low-voltage system, and the electric air valve DKH-A4 is interlocked with the double-speed fan PY / HPF-A1, and the electric air valve DKH-B4 is interlocked with the double-speed fan PY / HPF-B1.

[0142] The application first adds three strong smoke exhaust modes (D6H-D8H) to the fire condition of the operation mode of the station public area ventilation and air conditioning-smoke exhaust system when a fire occurs in the station public area, which is realized through the station FAS system.

[0143] When a fire occurs in the station hall (public area smoke control partition one), the D6H mode is added: the smoke exhaust fan PY-A1 and the double-speed fan PY / HPF-A1 are opened, and the electric air valves DKH-A1, DKH-A2, DKH-A4, DKH-A5, and DKH-A7 are opened.

[0144] When a fire occurs in the station hall (the second smoke prevention and control area of the public area), the D7H mode is added: the smoke exhaust fan PY-B1 and the double-speed fan PY / HPF-B1 are started, and the electric air valves DKH-B1, DKH-B2, DKH-B4, DKH-B5 and DKH-B7 are opened;

[0145] When a fire occurs in the platform layer (the third smoke prevention and control area of the public area), the D8H mode is added: the smoke exhaust fans PY-A1 and PY-A2 and the double-speed fans PY / HPF-A1 and PY / HPF-B1 are started, and the electric air valves DKH-A1, DKH-A3, DKH-A4, DKH-A6, DKH-A7, DKH-B1, DKH-B3, DKH-B4, DKH-B6 and DKH-B7 are opened.

[0146] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application, and therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than the above description, and therefore, all changes falling within the meaning and range of equivalency of the claims are intended to be embraced therein, and any reference signs in the claims should not be considered as limiting the claims to which they relate.

Claims

1. A high efficiency smoke exhaust system for a public area of a subway station, characterized in that, The fresh air shaft in the public area smoke prevention partition one is connected with the fan XF-A1 and the air valve DK-A1 and the air valve DK-A2, the air valve DK-A2 is connected with the combined air conditioner AHU-A1, the electric air valve DKH-A9, the electric air valve DKH-A5 and the station hall air supply and smoke exhaust pipe in sequence, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air valve DKH-A6, the station platform air supply and smoke exhaust pipe in the public area smoke prevention partition three, the electric air valve DKH-A9 is further connected with the electric air ​ ​ ​ ​ ​ ​ ​ Electric air valve DK-A1 and fan XF-A1 interlock, if electric air valve DK-A1 open, then fan XF-A1 open; if fan XF-A1 off, then electric air valve DK-A1 off; Electric air valve DK-B1 and fan XF-B1 interlock, if electric air valve DK-B1 open, then fan XF-B1 open; if fan XF-B1 off, then electric air valve DK-B1 off; Electric air valve DKH-A1 and fan PY-A1 interlock, if electric air valve DKH-A1 open, then fan PY-A1 open; if fan PY-A1 off, then electric air valve DKH-A1 off; Electric air valve DKH-B1 and fan PY-B1 interlock, if air valve DKH-B1 open, then fan PY-B1 open; if fan PY-B1 off, then air valve DKH-B1 off; Electric air valve DKH-A4 and double-speed fan PY / HPF-A1 interlock, if air valve DKH-A4 open, then double-speed fan PY / HPF-A1 open; if double-speed fan PY / HPF-A1 off, then air valve DKH-A4 off; Electric air valve DKH-B4 and double-speed fan PY / HPF-B1 interlock, if electric air valve DKH-B4 open, then double-speed fan PY / HPF-B1 open; if double-speed fan PY / HPF-B1 off, then electric air valve DKH-B4 off.

2. The high efficient smoke exhaust system for public area of subway station according to claim 1, characterized in that, One ventilation and air conditioning room is arranged at each end of the station, one combined air handling unit AHU-A1 / AHU-B1, one return and exhaust fan HPF-A1 / HPF-B1, one exhaust fan PY-A1 / PY-B1, one fresh air fan XF-A1 / XF-B1, and corresponding air valve pipeline are arranged in the ventilation and air conditioning room.

3. The high efficient smoke exhaust system for public area of subway station according to claim 1, characterized in that, The strong exhaust smoke module increases the interlocking relationship through the intelligent low-voltage system, electric air valve DKH-A4 and double-speed fan PY / HPF-A1 interlock, DKH-B4 and double-speed fan PY / HPF-B1 interlock.

4. A smoke exhaust method using the high-efficiency smoke exhaust system for a public area of a subway station according to any one of claims 1 to 3, characterized in that, The exhaust smoke method includes normal exhaust smoke and strong exhaust smoke modes; the strong exhaust smoke mode includes: When fire occurs in the public area smoke prevention partition one, the D6H mode is added: open exhaust fan PY-A1 and double-speed fan PY / HPF-A1, open electric air valves DKH-A1, DKH-A2, DKH-A4, DKH-A5 and DKH-A7; When fire occurs in the public area smoke prevention partition two, the D7H mode is added: open exhaust fan PY-B1 and double-speed fan PY / HPF-B1, open electric air valves DKH-B1, DKH-B2, DKH-B4, DKH-B5 and DKH-B7; When fire occurs in the public area smoke prevention partition three, the D8H mode is added: open exhaust fans PY-A1 and PY-A2, open double-speed fans PY / HPF-A1 and PY / HPF-B1, and open electric air valves DKH-A1, DKH-A3, DKH-A4, DKH-A6, DKH-A7, DKH-B1, DKH-B3, DKH-B4, DKH-B6 and DKH-B7.

5. The method of claim 4, wherein The smoke exhaust method also comprises a normal condition smoke exhaust method, and the normal condition comprises four modes of air conditioning small fresh air, air conditioning full fresh air, ventilation, and winter; Air conditioning small fresh air condition: Mode conversion condition: outdoor air enthalpy hW≥ station air enthalpy hA; Two-end combined air conditioners AHU-A1 and AHU-B1, return and exhaust fans HPF-A1 and HPF-B1, fans XF-A1 and XF-B1, corresponding electric air valves DK-A1 and DK-B1, and electric air volume adjusting valves DT-A1 and DT-A2 and DT-B1 and DT-B1 are opened, and the opening angle is completed by on-site debugging, and the rest of the fans and air valves are closed; Air conditioning full fresh air condition: Mode conversion condition: outdoor air enthalpy hW<station air enthalpy hA, and outdoor temperature tW≥18℃; Two-end combined air conditioners AHU-A1 and AHU-B1, return and exhaust fans HPF-A1 and HPF-B1, electric air valves DK-A2, DK-B2, DKH-A2, and DKH-B2 are opened; electric air volume adjusting valves DT-A1, DT-A2, DT-B1, and DT-B1 are opened, and the opening angle is completed by on-site debugging, and the rest of the fans and air valves are closed; Ventilation condition: Mode conversion condition: outdoor temperature tW<18℃; Two-end combined air conditioners AHU-A1 and AHU-B1, return and exhaust fans HPF-A1 and HPF-B1, electric air valves DK-A2, DK-B2, DKH-A2, and DKH-B2 are opened; electric air volume adjusting valves DT-A1, DT-B1, and corresponding electric air valves are opened, and the opening angle is completed by on-site debugging, and the rest of the fans and air valves are closed; Winter condition: Mode conversion condition: station air tN<12℃; Two-end combined air conditioners AHU-A1 and AHU-B1, return and exhaust fans HPF-A1 and HPF-B1, fans XF-A1 / XF-B1, electric air valves DK-A1, DK-B1, DK-A2, DK-B2, DKH-A2, and DKH-B2 are opened; electric air volume adjusting valves DT-A1, DT-A2, DT-B1, and DT-B2 are opened, and the opening angle is completed by on-site debugging; corresponding fans and combined air conditioners are frequency converted, and the rest of the fans and air valves are closed.

6. The method of claim 4, wherein, The normal smoke exhaust mode of the fire condition comprises: D6 mode: Mode conversion condition: fire occurs in the public area smoke prevention partition one; Smoke exhaust fan PY-A1 is opened, electric air valves DKH-A1 and DKH-A2 are opened, and the rest of the combined air conditioners, fans, and air valves are closed; D7 mode: Mode conversion condition: fire occurs in the public area smoke prevention partition two; Smoke exhaust fan PY-B1 is opened, electric air valves DKH-B1 and DKH-B2 are opened, and the rest of the combined air conditioners, fans, and air valves are closed; D8 mode: Mode conversion condition: fire occurs in the public area smoke prevention partition three; The exhaust fan PY-A1 and PY-B1 are opened, the electric air valve DKH-A1, DKH-A3, DKH-B1 and DKH-B3 are opened, and the rest of the combined air conditioner, fan and air valve are closed.

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