A ventilation, air conditioning and smoke exhaust system and method for a subway distribution station

Abstract

The present invention discloses a ventilation, air-conditioning and smoke exhaust system of a subway distribution station, comprising a station hall layer arranged on the upper layer of the station and a platform layer arranged on the lower layer of the station, a ventilation and air-conditioning machine room one and a ventilation and air-conditioning machine room two are respectively arranged at the small end of the station hall layer and the large end of the station hall layer, and a combined air conditioner one and a combined air conditioner two are respectively arranged in the ventilation and air-conditioning machine room one and the ventilation and air-conditioning machine room two, a civil construction fresh air duct and an exhaust duct are arranged in the ventilation and air-conditioning machine room one, and no civil construction fresh air duct and exhaust duct are arranged in the ventilation and air-conditioning machine room two, air is supplied from the small end of the station hall public area and the small end of the platform public area through the ventilation and air-conditioning machine room one, air is supplied from the large end of the station hall public area and the large end of the platform public area through the ventilation and air-conditioning machine room two, and air is uniformly exhausted by smoke exhaust and exhaust fans in the station hall layer and the platform layer, and in the smoke exhaust and exhaust working condition, the system operates reliably, is simple to control, has a short smoke exhaust conveying distance, does not require a civil construction smoke exhaust duct and a conversion air chamber, and has a good smoke exhaust effect.

Description

Technical Field

[0001] The present invention belongs to the field of ventilation, air conditioning and smoke exhaust of subway distribution line stations, and in particular relates to a ventilation, air conditioning and smoke exhaust system and method of subway distribution line stations. Background Art

[0002] 1) The traditional air conditioning system in the public area of ​​the subway distribution station generally adopts a three-fan full air system, that is, a combined air conditioner, a fresh air fan, and a return exhaust fan are installed in the air conditioning room at both ends. There are many devices, the operating energy consumption is high, and the system control is complex.

[0003] 2) The small-end air conditioning room of a traditional subway distribution station is usually close to the public area, but the large-end air conditioning room is often far away from the public area of ​​the station, generally between 120-150 meters. There are problems such as long supply and return air distribution distances, high fan energy consumption, large heat loss, and difficulty in the comprehensive layout of air ducts passing through the large-end equipment area.

[0004] 3) When a fire occurs on the platform level of a traditional subway distribution station, smoke exhaust fans are installed in the public areas at both the small and large ends of the platform. However, the large-end smoke exhaust fan is generally 120-150 meters away from the public area, which results in the problem of too long smoke exhaust pipes, large smoke leakage, and difficulty in the comprehensive layout of the air duct passing through the large-end equipment area.

[0005] 4) When a fire occurs on the platform floor of a traditional subway distribution station, the TEF heat exhaust fans at both ends of the station need to be turned on for auxiliary smoke exhaust. The small-end TEF heat exhaust fan is generally installed in the station hall equipment area above the end door of the platform public area. An auxiliary smoke exhaust port is installed near the end door of the small-end public area of ​​the platform. The civil heat exhaust air chamber also serves as an auxiliary smoke exhaust conversion air chamber. The auxiliary smoke exhaust port is connected to the civil heat exhaust air chamber and merges into the TEF heat exhaust fan. However, for the public area at the large end of the platform, the large end TEF heat exhaust fan is generally between 120 and 150 meters away from the end door of the platform public area, and the auxiliary smoke exhaust port is set near the end door. It is necessary to set up a special civil construction smoke exhaust conversion air chamber near the end door, and switch the track top heat exhaust working condition and the auxiliary platform public area smoke exhaust working condition through the conversion air valve, and then connect to the TEF exhaust fan air chamber through the 120-150 meter long civil construction track top heat exhaust air duct. There are problems such as difficult plan layout of the special civil construction conversion air chamber, complicated switching of electric air valves, long civil construction smoke exhaust air duct, large air leakage, poor auxiliary smoke exhaust effect, and long construction period. Summary of the invention

[0006] The purpose of the present invention is to provide a ventilation and air conditioning combined with smoke exhaust system and method for a subway distribution station. The ventilation system is configured and operated with fewer ventilation and air conditioning equipment, has a high utilization rate, has a short air supply and return air transmission distance, is simple to control, and can significantly reduce energy consumption. When combined with smoke exhaust, the system operates reliably, is simple to control, has a short smoke exhaust transmission distance, does not require civil construction of rail top heat exhaust ducts and conversion air chambers, and has a good smoke exhaust effect.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a ventilation, air conditioning and smoke exhaust system for a subway distribution station, including a station hall layer arranged on the upper level of the station and a platform layer arranged on the lower level of the station, the two ends of the station are respectively a small end and a large end, a station hall public area is arranged in the station hall layer, and a platform public area is arranged in the platform layer, a ventilation and air conditioning machine room 1 and a ventilation and air conditioning machine room 2 are respectively arranged at the small end of the station hall layer and the large end of the station hall layer, and a combined air conditioner 1 and a combined air conditioner 2 are respectively arranged in the ventilation and air conditioning machine room 1 and the ventilation and air conditioning machine room 2, a civil construction fresh air duct and an exhaust duct are arranged in the ventilation and air conditioning machine room 1, the civil construction fresh air duct is connected to the fresh air booth through a fresh air valve 1, and the fresh air and return air After being treated by combined air conditioner one, air is supplied to the small end of the station hall public area and the small end of the platform public area. The smoke exhaust and exhaust fans are arranged in ventilation and air-conditioning room one, and the exhaust and smoke exhaust ducts are connected to the exhaust booths through the smoke exhaust and exhaust fans. There are several exhaust and smoke exhaust outlets in the station hall public area and the platform public area, and several exhaust and smoke exhaust outlets are connected to the smoke exhaust and exhaust fans through exhaust and smoke exhaust ducts; a station entrance and exit passage is arranged at the large end of the station hall floor, and a pressurized air supply inlet is arranged in the station entrance and exit passage, and the pressurized air supply inlet is connected to ventilation and air-conditioning room two through the pressurized air duct. Normally, the fresh air valve two is closed, and the return air is supplied to the large end of the station hall public area and the large end of the platform public area after being treated by combined air conditioner two.

[0008] Furthermore, the ventilation and air-conditioning room 2 is close to the public area of ​​the station hall.

[0009] Furthermore, it also includes a plurality of air supply pipes, which are respectively a station hall branch pipe 1 and a platform branch pipe 1 connected to the combined air conditioner 1, and a station hall branch pipe 2 and a platform branch pipe 2 connected to the combined air conditioner 2. The station hall branch pipe 1, the platform branch pipe 1, the station hall branch pipe 2 and the platform branch pipe 2 are respectively provided with an electric air valve 1, an electric air valve 2, an electric air valve 3 and an electric air valve 4 for controlling the on-off thereof. The public area of ​​the station hall is provided with a staircase 1, a staircase 2 and a staircase 3 in sequence. The station hall branch pipe 1 is arranged around the staircase 1, and a A number of air supply outlets are arranged, a pressurized air supply branch pipe 1 is arranged on the upper branch of the station hall branch pipe 1, an electric air valve 5 is arranged on the pressurized air supply branch pipe 1, the pressurized air supply branch pipe 1 extends to the staircase 2, and an air supply nozzle is arranged at the end of the pressurized air supply branch pipe 1; the station hall branch pipe 2 is arranged around the staircase 3, and a number of air supply outlets are arranged on the station hall branch pipe 2; a pressurized air supply branch pipe 2 is arranged on the upper branch of the station hall branch pipe 1, an electric air valve 6 is arranged on the pressurized air supply branch pipe 2, the pressurized air supply branch pipe 2 extends to the staircase 3, and an air supply nozzle is arranged at the end of the pressurized air supply branch pipe 2.

[0010] Furthermore, a centralized return air outlet is provided at the small end of the station hall public area and the small end of the platform public area. The centralized return air outlet is connected to the combined air conditioner through a return air duct and a return air valve.

[0011] Furthermore, centralized return air outlet 2 is provided at the large end of the public area of ​​the station hall and the large end of the public area of ​​the platform. The centralized return air outlet 2 is connected to the combined air conditioner 2 through the return air duct and the return air valve 2.

[0012] Furthermore, the combined air conditioner 1 and the combined air conditioner 2 are both single-fan combined air conditioners.

[0013] Furthermore, there are two smoke and exhaust fans, and both of them are provided with interlocking air valves for starting and stopping interlocked therewith; the two smoke and exhaust fans are respectively smoke and exhaust fan one and smoke and exhaust fan two, and the several exhaust and smoke exhaust outlets are respectively exhaust and smoke exhaust outlet one and exhaust and smoke exhaust outlet two arranged in the small end of the public area of ​​the station hall and the small end of the public area of ​​the platform, and exhaust and smoke exhaust outlet three and exhaust and smoke exhaust outlet four arranged in the large end of the public area of ​​the station hall and the large end of the public area of ​​the platform; and the corresponding exhaust and smoke exhaust air ducts are provided in several numbers, including exhaust and smoke exhaust air duct one and exhaust and smoke exhaust air duct two. , exhaust and smoke exhaust duct three and exhaust and smoke exhaust duct four, exhaust and smoke exhaust port one and exhaust and smoke exhaust port two are connected to exhaust and exhaust fan one through exhaust and smoke exhaust duct one and exhaust and smoke exhaust duct two respectively, and electric air valve seven and electric air valve eight are installed on exhaust and smoke exhaust duct one and exhaust and smoke exhaust duct two respectively; exhaust and smoke exhaust port three and exhaust and smoke exhaust port four are connected to exhaust and exhaust fan two through exhaust and smoke exhaust duct three and exhaust and smoke exhaust duct four respectively, and electric air valve nine and electric air valve ten are installed on exhaust and smoke exhaust duct three and exhaust and smoke exhaust duct four respectively.

[0014] Furthermore, a centralized auxiliary smoke exhaust port is arranged at the small end of the platform public area, and the centralized auxiliary smoke exhaust port is close to the stair opening. The auxiliary smoke exhaust port is connected to the piston wind pavilion through an auxiliary smoke exhaust pipe, and the auxiliary smoke exhaust pipe is provided with a TVF tunnel fan and an electric air valve eleven.

[0015] A ventilation and smoke exhaust method for a subway distribution station, in air-conditioning working condition, a combined air conditioner 1 is turned on, a return air valve 1 and a fresh air valve 1 are automatically adjusted in opening according to the carbon dioxide concentration, a combined air conditioner 2 is turned on, the return air valve 2 is fully opened, the fresh air valve 2 is closed, and air-conditioning return air is provided to the station hall layer and the platform layer through a centralized return air port 2 in cooperation with the combined air conditioner 2, and the return air is treated by the combined air conditioner 2 and then supplied to the public area of ​​the station hall and the public area of ​​the platform through the station hall branch pipe 2 and the platform branch pipe 2, and the ratio of the fresh air and the return air entering the combined air conditioner 1 is adjusted by automatically adjusting the opening of the return air valve 1 and the fresh air valve 1, and the fresh air and the return air are mixed and treated by turning on the combined air conditioner 1, and then supplied to the public area of ​​the station hall and the public area of ​​the platform through the station hall branch pipe 1 and the platform branch pipe 1 to adjust the air quality;

[0016] In ventilation mode, turn off combined air conditioner 1 and combined air conditioner 2, turn on two smoke and exhaust fans, and mechanically exhaust the public areas of the station hall and platform through the exhaust and smoke exhaust ducts and exhaust and smoke exhaust ports. Use the negative pressure formed by mechanical exhaust to naturally introduce fresh air from the station entrances and exits.

[0017] In case of fire at the station hall level, turn off combined air conditioner 1 and combined air conditioner 2, and at the same time, close the electric air valve 8 and electric air valve 10 on the exhaust and smoke exhaust duct at the platform level, turn on the two smoke and exhaust fans and the electric air valve 7 and electric air valve 9 on the exhaust and smoke exhaust duct at the station hall level, exhaust smoke mechanically through the exhaust and smoke exhaust duct at the station hall level, and use the negative pressure formed by the smoke exhaust to naturally introduce fresh air from the station entrance and exit;

[0018] When a fire occurs in the public area of ​​the platform, open exhaust and smoke exhaust fan 1 and exhaust and smoke exhaust fan 2, close electric air valve 7 and electric air valve 9 on the exhaust and smoke exhaust duct at the station hall level, open electric air valve 11 on the auxiliary smoke exhaust duct, and at the same time open the TVF tunnel fan at the small end of the platform level to assist in smoke exhaust, and concentrate the auxiliary smoke exhaust outlet close to the staircase one to ensure the oncoming wind speed at the staircase one; open combined air conditioner 1 and combined air conditioner 2, close electric air valve 1, electric air valve 2, electric air valve 3 and electric air valve 4 on the supply air duct, close return air valve 1 and return air valve 2 to prevent return air, and open fresh air valve 1, fresh air valve 2, electric air valve 5 and electric air valve 6; combined air conditioner 1 pressurizes and supplies air to staircase two through pressurized air supply branch pipe 1 to ensure the oncoming wind speed at the staircase two; combined air conditioner 2 pressurizes and supplies air to staircase two through pressurized air supply branch pipe 3 to ensure the oncoming wind speed at the staircase three.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. No civil construction of new air ducts and exhaust ducts are set in the ventilation and air conditioning room 2. The small end of the station hall layer and the small end of the platform layer are supplied with air through the ventilation and air conditioning room 1, and the large end of the station hall layer and the large end of the platform layer are supplied with air through the ventilation and air conditioning room 2. The station hall layer and the platform layer are uniformly exhausted by the smoke exhaust and exhaust fans. In the smoke exhaust condition, the system operates reliably, the control is simple, the smoke exhaust conveying distance is short, and there is no need for civil construction of smoke exhaust ducts and conversion air chambers, and the smoke exhaust effect is good. 2. The ventilation and air conditioning room 2 is close to the public area of ​​the station hall. Compared with the traditional design of setting the ventilation and air conditioning room 2 in the public area of ​​the large end at the end of the equipment area, it avoids the air supply duct and the return air duct passing through the large end equipment area, reduces the ventilation and air conditioning system conveying distance by about 260 meters, reduces the fan energy consumption and the heat and cold loss during the conveying process, simplifies the comprehensive layout of the pipelines in the large end equipment area, and can reduce the height of the station hall layer 1 by about 300 mm. 3. Combined air conditioner 1 and combined air conditioner 2 are both single-fan combined air conditioners. Compared with the traditional three-fan system, the fresh air fan and return air fan are eliminated. A single fan is used to introduce fresh air and return air into the mixing chamber for mixing and discharge into the station, ensuring fresh air in the station and significantly reducing the energy consumption of the ventilation and air-conditioning system. The proportion of mixed air can be achieved by adjusting the opening of the electric air valve, simplifying the control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the system structure of the present invention;

[0021] Figure 2 This is the plan view of the station hall structure of the present invention;

[0022] Figure 3 This is a plan view of the platform structure of the present invention;

[0023] In the figure: 1. Station hall level, 2. Platform level, 3. Ventilation and air conditioning room 1, 4. Ventilation and air conditioning room 2, 5. Combined air conditioner 1, 6. Combined air conditioner 2, 7. Civil construction fresh air duct, 8. Exhaust duct, 9. Fresh air valve 1, 10. Fresh air booth, 11. Smoke exhaust and exhaust fan 1, 12. Smoke exhaust and exhaust fan 2, 13. Exhaust booth, 14. Station entrance and exit passage, 15. Pressurized air inlet, 16. Pressurized air duct, 17. Fresh air valve 2, 18. Station hall public area, 19. Platform public area, 20. Station hall branch pipe 1, 21. Platform branch pipe 1, 22. Station hall branch pipe 2, 23. Platform branch pipe 2, 24. Electric air valve 1, 25. Electric air valve 2, 26. Electric air valve 3 、27. Electric air valve 4、28. Stairway 1、29. Stairway 2、30. Stairway 3、31. Pressurized air supply branch pipe 1、32. Electric air valve 5、33. Pressurized air supply branch pipe 2、34. Electric air valve 6、35. Centralized return air outlet 1、36. Return air valve 1、37. Centralized return air outlet 2、38. Return air valve 2、39. Centralized auxiliary smoke exhaust outlet、40. Tunnel fan、41. Piston wind pavilion、42. Exhaust and smoke exhaust air duct 1、43. Exhaust and smoke exhaust air duct 2、44. Exhaust and smoke exhaust air duct 3、45. Exhaust and smoke exhaust air duct 4、46. Electric air valve 7、47. Electric air valve 8、48. Electric air valve 9、49. Electric air valve 10、50. Electric air valve 11. DETAILED DESCRIPTION

[0024] Reference Figures 1 to 3 A ventilation, air conditioning and smoke exhaust system for a subway distribution station, comprising a station hall layer 1 arranged on the upper level of the station and a platform layer 2 arranged on the lower level of the station, the two ends of the station are respectively a small end and a large end, a station hall public area 18 is arranged in the station hall layer, and a platform public area 19 is arranged in the platform layer, a ventilation and air conditioning machine room 1 3 and a ventilation and air conditioning machine room 2 4 are respectively arranged at the small end of the station hall layer 1 and the large end of the station hall layer 1, and a combined air conditioner 1 5 and a combined air conditioner 2 6 are respectively arranged in the ventilation and air conditioning machine room 1 3 and the ventilation and air conditioning machine room 2 4, a civil construction fresh air duct 7 and an exhaust duct 8 are arranged in the ventilation and air conditioning machine room 1 3, the civil construction fresh air duct 7 is connected to a fresh air booth 10 through a fresh air valve 1 9, and the return air of the fresh air fan is processed by the combined air conditioner 1 5 Air is supplied to the small end of the station hall public area 18 and the small end of the platform public area 19, the exhaust duct 8 is connected to the exhaust booth 13 through the smoke and exhaust fan, and a number of exhaust and smoke exhaust outlets are distributed in the station hall public area 18 and the platform public area 19, and the number of exhaust and smoke exhaust outlets are connected to the smoke and exhaust fan through exhaust and smoke exhaust air ducts; a station entrance and exit passage 14 is arranged at the large end of the station hall layer 1, and a pressurized air supply inlet 15 is arranged on the station entrance and exit passage 14, and the pressurized air supply inlet 15 is connected to the ventilation and air-conditioning room 2 4 through a pressurized air duct 16, and a fresh air valve 2 17 is arranged on the pressurized air duct 16. Normally, the fresh air valve 2 17 is closed, and the return air is processed by the combined air conditioner 2 6 and then supplied to the large end of the station hall public area 18 and the large end of the platform public area 19.

[0025] In the above scheme, no civil fresh air duct 7 and exhaust duct 8 are set in the ventilation and air-conditioning room 2 4, the small end of the station hall layer 1 and the small end of the platform layer 2 are supplied with air through the ventilation and air-conditioning room 1 3, the large end of the station hall layer 1 and the large end of the platform layer 2 are supplied with air through the ventilation and air-conditioning room 2 4, and the station hall layer 1 and the platform layer 2 are exhausted uniformly by the smoke exhaust and exhaust fans.

[0026] Furthermore, the ventilation and air conditioning room 24 is close to the station hall public area 18. Compared with the traditional design of setting the ventilation and air conditioning room 24 in the large-end public area at the end of the equipment area, it avoids the air supply duct and return air duct from passing through the large-end equipment area, reduces the ventilation and air conditioning system transmission distance by about 260 meters, reduces the fan energy consumption and the heat loss during the transmission process, simplifies the comprehensive layout of the pipelines in the large-end equipment area, and can reduce the height of the station hall layer 11 by about 300 mm.

[0027] Furthermore, it also includes a plurality of air supply pipes, which are respectively a hall branch pipe 1 20 connected to the combined air conditioner 1 5, a platform branch pipe 1 21, and a hall branch pipe 2 22 and a platform branch pipe 2 23 connected to the combined air conditioner 2 6. The hall branch pipe 1 20, the platform branch pipe 1 21, the hall branch pipe 2 22, and the platform branch pipe 2 23 are respectively provided with an electric air valve 1 24, an electric air valve 2 25, an electric air valve 3 26, and an electric air valve 4 27 for controlling the on-off thereof. The public area 18 of the station hall is provided with a staircase 1 28, a staircase 2 29, and a staircase 3 30. The hall branch pipe 1 20 is arranged around the staircase 1 28, and is A plurality of air supply outlets are arranged on the station hall branch pipe 20. A pressurized air supply branch pipe 31 is arranged on the branch of the station hall branch pipe 20. An electric air valve 5 32 is arranged on the pressurized air supply branch pipe 31. The pressurized air supply branch pipe 31 extends to the staircase 29, and an air supply nozzle is arranged at the end of the pressurized air supply branch pipe 31; the station hall branch pipe 22 is arranged around the staircase 30, and a plurality of air supply outlets are arranged on the station hall branch pipe 22; the station hall branch pipe 20 is arranged on the branch of the pressurized air supply branch pipe 2 33. An electric air valve 6 34 is arranged on the pressurized air supply branch pipe 2 33. The pressurized air supply branch pipe 2 33 extends to the staircase 30, and an air supply nozzle is arranged at the end of the pressurized air supply branch pipe 2 33.

[0028] In order to ensure the air quality inside the station and save energy. A centralized return air vent 1 35 is set at the small end of the station hall public area 18 and the small end of the platform public area 19. The centralized return air vent 1 35 is connected to the combined air conditioner 1 5 through the return air duct and the return air valve 1 36; a centralized return air vent 2 37 is set at the large end of the station hall public area 18 and the large end of the platform public area 19. The centralized return air vent 2 37 is connected to the combined air conditioner 2 6 through the return air duct and the return air valve 2 38. The combined air conditioner consists of a mixed air section, an efficient filtration section, an electrostatic dust removal section, a sterilization and disinfection section, a surface cooling section, a fan section, a flow equalization section, and an air outlet section, so that the return air and the fresh air are mixed and processed by the combined air conditioner enthalpy and humidity, and then discharged to the station hall layer 1 and the platform layer 2 to ensure the air quality. In air-conditioning mode, the combined air conditioner 15 is turned on, and the return air valve 136 and the fresh air valve 19 are automatically adjusted according to the carbon dioxide concentration. The combined air conditioner 26 is turned on, the return air valve 238 is fully opened, and the fresh air valve 217 is closed. The air return air is conditioned and returned to the station hall layer 1 and the platform layer 2 through the centralized return air port 237 in cooperation with the combined air conditioner 26. After the return air is processed by the combined air conditioner 26, it is conditioned and supplied to the station hall public area 18 and the platform public area 19 through the station hall branch pipe 222 and the platform branch pipe 23. The opening of the return air valve 136 and the fresh air valve 19 is automatically adjusted to adjust the ratio of the fresh air and the return air entering the combined air conditioner 15. After the fresh air and the return air are mixed and processed by turning on the combined air conditioner 15, they are conditioned and supplied to the station hall public area 18 and the platform public area 19 through the station hall branch pipe 120 and the platform branch pipe 121 to adjust the air quality.

[0029] Furthermore, the combined air conditioner 1 5 and the combined air conditioner 2 6 are both single-fan combined air conditioners. Compared with the traditional three-fan system, the fresh air fan and the return air fan are eliminated, which significantly reduces the energy consumption of the ventilation and air conditioning system and simplifies the control system.

[0030] Furthermore, there are two smoke and exhaust fans, and both of them are provided with interlocking air valves for starting and stopping interlocked therewith; the two smoke and exhaust fans are respectively smoke and exhaust fan one 11 and smoke and exhaust fan two 12, and the plurality of exhaust and smoke exhaust outlets are respectively exhaust and smoke exhaust outlet one and exhaust and smoke exhaust outlet two arranged in the small end of the station hall public area 18 and the small end of the platform public area 19, and exhaust and smoke exhaust outlet three and exhaust and smoke exhaust outlet four arranged in the large end of the station hall public area 18 and the large end of the platform public area 19; and the corresponding exhaust and smoke exhaust air ducts are provided in a plurality of numbers, including exhaust and smoke exhaust air duct one 42, exhaust and smoke exhaust air duct two 43, exhaust and smoke exhaust air duct The exhaust and smoke exhaust port 3 44 and the exhaust and smoke exhaust air duct 4 45, the exhaust and smoke exhaust port 1 and the exhaust and smoke exhaust port 2 are connected to the smoke exhaust and exhaust fan 11 through the exhaust and smoke exhaust air duct 1 42 and the exhaust and smoke exhaust air duct 2 43 respectively, and the electric air valve 7 46 and the electric air valve 8 47 are installed on the exhaust and smoke exhaust air duct 1 42 and the exhaust and smoke exhaust air duct 2 43 respectively; the exhaust and smoke exhaust port 3 and the exhaust and smoke exhaust port 4 are connected to the smoke exhaust and exhaust fan 2 12 through the exhaust and smoke exhaust air duct 3 44 and the exhaust and smoke exhaust air duct 45 respectively, and the electric air valve 9 48 and the electric air valve 10 49 are installed on the exhaust and smoke exhaust air duct 3 44 and the exhaust and smoke exhaust air duct 45 respectively. When a fire occurs on the hall level 1, turn off the combined air conditioner 1 5 and the combined air conditioner 2 6, and at the same time close the electric air valve 8 47 and the electric air valve 10 49 on the exhaust and smoke exhaust duct on the platform level 2, turn on the two smoke and exhaust fans and the electric air valve 7 46 and the electric air valve 9 48 on the exhaust and smoke exhaust duct on the hall level 1, and mechanically exhaust the smoke through the exhaust and smoke exhaust duct on the hall level 1, and use the negative pressure formed by the smoke exhaust to naturally introduce fresh air from the station entrances and exits.

[0031] Furthermore, a centralized auxiliary smoke exhaust port 39 is provided at the small end of the platform public area 19, and the centralized auxiliary smoke exhaust port 39 is close to the staircase 28. The auxiliary smoke exhaust port is connected to the piston wind pavilion 41 through the auxiliary smoke exhaust pipe, and the auxiliary smoke exhaust pipe is provided with a TVF tunnel fan 40 and an electric air valve 11 50. When a fire occurs in the platform public area 19, the exhaust and smoke exhaust fan 1 and the exhaust and smoke exhaust fan 2 are opened, and the electric air valve 7 46 and the electric air valve 9 48 on the exhaust and smoke exhaust air duct of the station hall layer 1 are closed. The centralized auxiliary smoke exhaust port 39 is close to the staircase 28, and the electric air valve 11 50 on the auxiliary smoke exhaust air duct is opened. At the same time, the TVF tunnel fan 40 at the small end of the platform layer 2 is opened to assist in smoke exhaust; the combined air conditioner 1 5 and the combined air conditioner 2 6 are opened, and the electric air valves 1 24 and 1 26 on the air supply pipe are closed. Electric air valve 25, electric air valve 3 26 and electric air valve 4 27 close return air valve 1 36 and return air valve 2 38 to prevent return air, and open fresh air valve 1 9, fresh air valve 2 17, electric air valve 5 32 and electric air valve 6 34, and pressurize air supply to staircase 1 28 and staircase 3 30 through pressurized air supply branch pipe 1 31 and pressurized air supply branch pipe 2 33, so as to meet the requirement that the oncoming wind speed of staircase 1 28, staircase 2 29 and staircase 3 30 is not less than 1.5m / s in case of platform fire. Compared with the traditional design of using TEF exhaust fans on both sides to assist smoke exhaust through the heat exhaust duct on the top of the civil track, this system has good smoke exhaust effect, simple control, small civil construction scale, and reduces the heat exhaust duct on the top of the civil track by about 260 meters.

[0032] A ventilation and smoke exhaust method for a subway distribution station, in air-conditioning working condition, the combined air conditioner 15 is turned on, the return air valve 136 and the fresh air valve 19 are automatically adjusted according to the carbon dioxide concentration, the combined air conditioner 26 is turned on, the return air valve 238 is fully opened, the fresh air valve 217 is closed, and the air conditioning return air is provided to the station hall layer 1 and the platform layer 2 through the centralized return air port 237 in cooperation with the combined air conditioner 26, and the return air is treated by the combined air conditioner 26, and then the air conditioning is provided to the station hall public area 18 and the platform public area 19 through the station hall branch pipe 22 and the platform branch pipe 23, and the ratio of the fresh air and the return air entering the combined air conditioner 15 is adjusted by automatically adjusting the opening of the return air valve 36 and the fresh air valve 9, and the fresh air and the return air are mixed and treated by turning on the combined air conditioner 5, and then the air quality is adjusted by the station hall branch pipe 120 and the platform branch pipe 121 to the station hall public area 18 and the platform public area 19;

[0033] In ventilation mode, the combined air conditioner 1 5 and the combined air conditioner 2 6 are turned off, and two smoke and exhaust fans are turned on to mechanically exhaust the station hall public area 18 and the platform public area 19 through the exhaust and smoke exhaust duct and the exhaust and smoke exhaust port, and the negative pressure formed by the mechanical exhaust is used to naturally intake fresh air from the station entrance and exit;

[0034] When a fire occurs on the hall level 1, turn off the combined air conditioner 1 5 and the combined air conditioner 2 6, and at the same time, turn off the electric air valve 8 47 and the electric air valve 10 49 on the exhaust and smoke exhaust duct on the platform level 2, turn on the two smoke and exhaust fans and the electric air valve 7 46 and the electric air valve 9 48 on the exhaust and smoke exhaust duct on the hall level 1, and exhaust smoke mechanically through the exhaust and smoke exhaust duct on the hall level 1, and use the negative pressure formed by the smoke exhaust to naturally introduce fresh air from the station entrance and exit;

[0035] In case of fire in the platform public area 19, open the exhaust and smoke exhaust fan 1 and the exhaust and smoke exhaust fan 2, close the electric air valve 7 46 and the electric air valve 9 48 on the exhaust and smoke exhaust duct on the station hall layer 1, open the electric air valve 11 50 on the auxiliary smoke exhaust duct, and at the same time open the TVF tunnel fan 40 at the small end of the platform layer 2 to assist in smoke exhaust, and centralize the auxiliary smoke exhaust port 39 close to the staircase 28 to ensure the oncoming wind speed at the staircase 28; open the combined air conditioner 1 5 and the combined air conditioner 2 6, and close the electric air valve on the air supply duct One 24, electric air valve two 25, electric air valve three 26 and electric air valve four 27, close return air valve one 36 and return air valve two 38 to prevent return air, and open fresh air valve one 9, fresh air valve two 17, electric air valve five 32 and electric air valve six 34, combined air conditioner one 5 pressurizes and supplies air to staircase two 29 through pressurized air supply branch pipe one 31 to ensure the oncoming wind speed at staircase two 29, combined air conditioner two 6 pressurizes and supplies air to staircase three 30 through pressurized air supply branch pipe two 33 to ensure the oncoming wind speed at staircase three 30.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A ventilation, air conditioning and smoke exhaust system for a subway distribution station, characterized by: It includes a station hall layer arranged on the upper level of the station and a platform layer arranged on the lower level of the station. The two ends of the station are respectively a small end and a large end. A station hall public area is arranged in the station hall layer, and a platform public area is arranged in the platform layer. Ventilation and air conditioning machine room 1 and ventilation and air conditioning machine room 2 are arranged at the small end of the station hall layer and the large end of the station hall layer respectively, and combined air conditioners 1 and 2 are arranged in the ventilation and air conditioning machine room 1 and the ventilation and air conditioning machine room 2 respectively. A civil construction fresh air duct and an exhaust duct are arranged in the ventilation and air conditioning machine room 1. The civil construction fresh air duct is connected to the fresh air pavilion through a fresh air valve 1. The fresh air and return air are processed by the combined air conditioner 1 and then discharged to the small station hall public area. The smoke and exhaust fans are arranged in the ventilation and air-conditioning room 1, and the exhaust and smoke exhaust duct is connected to the exhaust booth through the smoke and exhaust fan. There are several exhaust and smoke exhaust outlets in the station hall public area and the platform public area, and several exhaust and smoke exhaust outlets are connected to the smoke and exhaust fan through the exhaust and smoke exhaust duct; the station entrance and exit passage is arranged at the large end of the station hall layer, and the pressurized air supply inlet is arranged in the station entrance and exit passage, and the pressurized air supply inlet is connected to the ventilation and air-conditioning room 2 through the pressurized air duct, and the pressurized air supply inlet is connected to the ventilation and air-conditioning room 2 arranged in the combined air conditioner 2. The fresh air valve 2 is arranged on the pressurized air duct, which is usually closed, and the return air is The air is supplied to the large end of the station hall public area and the large end of the platform public area after being processed by the combined air conditioner. There are two smoke and exhaust fans, and both of them are provided with interlocking air valves for interlocking start and stop. The two smoke and exhaust fans are respectively smoke and exhaust fan one and smoke and exhaust fan two, and the several exhaust and smoke exhaust outlets are respectively exhaust and smoke exhaust outlet one and exhaust and smoke exhaust outlet two arranged in the small end of the station hall public area and the small end of the platform public area, and exhaust and smoke exhaust outlet three and exhaust and smoke exhaust outlet four arranged in the large end of the station hall public area and the large end of the platform public area; the exhaust and smoke exhaust air ducts are correspondingly provided with several, including exhaust and smoke exhaust air ducts Duct one, exhaust and smoke exhaust duct two, exhaust and smoke exhaust duct three and exhaust and smoke exhaust duct four, exhaust and smoke exhaust port one and exhaust and smoke exhaust port two are connected to exhaust and exhaust fan one through exhaust and smoke exhaust duct one and exhaust and smoke exhaust duct two respectively, and electric air valve seven and electric air valve eight are installed on exhaust and smoke exhaust duct one and exhaust and smoke exhaust duct two respectively; exhaust and smoke exhaust port three and exhaust and smoke exhaust port four are connected to exhaust and exhaust fan two through exhaust and smoke exhaust duct three and exhaust and smoke exhaust duct four respectively, and electric air valve nine and electric air valve ten are installed on exhaust and smoke exhaust duct three and exhaust and smoke exhaust duct four respectively.

2. The ventilation, air conditioning and smoke exhaust system for a subway distribution station according to claim 1 is characterized by: The second ventilation and air-conditioning room is close to the public area of ​​the station hall.

3. The ventilation, air conditioning and smoke exhaust system for a subway distribution station according to claim 2 is characterized by: The station hall also includes a plurality of air supply pipes, which are a station hall branch pipe 1 connected to a combined air conditioner 1 and a platform branch pipe 1, and a station hall branch pipe 2 and a platform branch pipe 2 connected to a combined air conditioner 2. The station hall branch pipe 1, the platform branch pipe 1, the station hall branch pipe 2 and the platform branch pipe 2 are respectively provided with electric air valves 1, 2, 3 and 4 for controlling the on-off thereof. A staircase 1, a staircase 2 and a staircase 3 are sequentially provided in the public area of ​​the station hall. The station hall branch pipe 1 is arranged around the staircase 1, and a plurality of air supply pipes are provided on the station hall branch pipe 1. Dry air supply outlet, a pressurized air supply branch pipe 1 is arranged on the branch of the station hall branch pipe 1, an electric air valve 5 is arranged on the pressurized air supply branch pipe 1, the pressurized air supply branch pipe 1 extends to the staircase 2, and an air supply nozzle is arranged at the end of the pressurized air supply branch pipe 1; the station hall branch pipe 2 is arranged around the staircase 3, and a number of air supply outlets are arranged on the station hall branch pipe 2; a pressurized air supply branch pipe 2 is arranged on the branch of the station hall branch pipe 1, an electric air valve 6 is arranged on the pressurized air supply branch pipe 2, the pressurized air supply branch pipe 2 extends to the staircase 3, and an air supply nozzle is arranged at the end of the pressurized air supply branch pipe 2.

4. A ventilation, air conditioning and smoke exhaust system for a subway distribution station according to claim 3, characterized in that: A centralized air return vent is provided at the small end of the public area of ​​the station hall and the small end of the public area of ​​the platform. The centralized air return vent is connected to a combined air conditioner through a return air duct and a return air valve.

5. A ventilation, air conditioning and smoke exhaust system for a subway distribution station according to claim 4, characterized in that: Centralized air return vents 2 are provided at the large ends of the public areas of the station hall and the platform. Centralized air return vents 2 are connected to combined air conditioners 2 through return air ducts and return air valves 2.

6. The ventilation, air conditioning and smoke exhaust system for a subway distribution station according to claim 5, characterized in that: Combined air conditioner 1 and combined air conditioner 2 are both single-fan combined air conditioners.

7. A ventilation, air conditioning and smoke exhaust system for a subway distribution station according to claim 6, characterized in that: A centralized auxiliary smoke exhaust port is arranged at the small end of the platform public area, and is close to the stair opening. The auxiliary smoke exhaust port is connected to the piston wind pavilion through an auxiliary smoke exhaust pipe, and the auxiliary smoke exhaust pipe is provided with a TVF tunnel fan and an electric air valve 11.

8. A ventilation and smoke exhaust method for a subway distribution line station, using the ventilation, air conditioning and smoke exhaust system for a subway distribution line station according to claim 1, characterized in that: When the air-conditioning is in operation, the combined air conditioner 1 is turned on, and the return air valve 1 and the fresh air valve 1 are automatically adjusted in opening according to the carbon dioxide concentration. The combined air conditioner 2 is turned on, and the return air valve 2 is fully opened. The fresh air valve 2 is closed, and the station hall layer and the platform layer are returned to the air conditioner through the centralized return air outlet 2 in cooperation with the combined air conditioner 2. After the return air is processed by the combined air conditioner 2, it is supplied to the public areas of the station hall and the platform through the station hall branch pipe 2 and the platform branch pipe 2. The ratio of the fresh air and the return air entering the combined air conditioner 1 is adjusted by automatically adjusting the opening of the return air valve 1 and the fresh air valve 1. After the fresh air and the return air are mixed and processed by turning on the combined air conditioner 1, they are supplied to the public areas of the station hall and the platform through the station hall branch pipe 1 and the platform branch pipe 1 to adjust the air quality. In ventilation mode, turn off combined air conditioner 1 and combined air conditioner 2, turn on two smoke and exhaust fans, and mechanically exhaust the public areas of the station hall and platform through the exhaust and smoke exhaust ducts and exhaust and smoke exhaust ports. Use the negative pressure formed by mechanical exhaust to naturally introduce fresh air from the station entrances and exits. In case of fire at the station hall level, turn off combined air conditioner 1 and combined air conditioner 2, and at the same time, close the electric air valve 8 and electric air valve 10 on the exhaust and smoke exhaust duct at the platform level, turn on the two smoke and exhaust fans and the electric air valve 7 and electric air valve 9 on the exhaust and smoke exhaust duct at the station hall level, exhaust smoke mechanically through the exhaust and smoke exhaust duct at the station hall level, and use the negative pressure formed by the smoke exhaust to naturally introduce fresh air from the station entrance and exit; When a fire occurs in the public area of ​​the platform, open exhaust and smoke exhaust fan 1 and exhaust and smoke exhaust fan 2, close electric air valve 7 and electric air valve 9 on the exhaust and smoke exhaust duct at the station hall level, open electric air valve 11 on the auxiliary smoke exhaust duct, and at the same time open the TVF tunnel fan at the small end of the platform level to assist in smoke exhaust, and concentrate the auxiliary smoke exhaust outlet close to the staircase one to ensure the oncoming wind speed at the staircase one; open combined air conditioner 1 and combined air conditioner 2, close electric air valve 1, electric air valve 2, electric air valve 3 and electric air valve 4 on the supply air duct, close return air valve 1 and return air valve 2 to prevent return air, and open fresh air valve 1, fresh air valve 2, electric air valve 5 and electric air valve 6; combined air conditioner 1 pressurizes and supplies air to staircase two through pressurized air supply branch pipe 1 to ensure the oncoming wind speed at the staircase two; combined air conditioner 2 pressurizes and supplies air to staircase two through pressurized air supply branch pipe 3 to ensure the oncoming wind speed at the staircase three.

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