Semi-transverse ventilation deeply-buried station access channel smoke control system and method

Abstract

The invention discloses a semi-transverse ventilation deeply-buried station access channel flue gas control system in the field of rail transit, and the system comprises a flue gas monitoring unit which is used for monitoring the flue gas concentration, temperature and visibility in a smoke prevention subarea; the central processing unit is used for receiving monitoring data of the flue gas monitoring unit and processing the data; the smoke exhaust channels are formed in all the smoke prevention subareas and used for providing channels for smoke exhaust, and all the smoke exhaust channels are connected to a smoke exhaust header pipe; the execution unit is arranged on the smoke exhaust main pipe and used for exhausting the smoke from the smoke exhaust channel, and the execution unit is electrically connected with the central processing unit; the invention further discloses a flue gas control method. The flue gas control system and the flue gas control method have the beneficial effects that by arranging the flue gas control system and the flue gas control method, the safety under the fire hazard condition is remarkably improved, and the casualty risk is reduced.

Description

Technical Field

[0001] The present invention relates to the field of rail transit technology, and in particular to a smoke control system and method for a semi-transversely ventilated deep-buried station access passage. Background Art

[0002] With the acceleration of urbanization, the urban population and economic scale continue to grow, and the traditional public transportation system can no longer meet people's needs for efficient and comfortable travel. To this end, many cities in my country have vigorously promoted the construction of urban rail transit to ease travel pressure. As of June 30, 2024, 58 cities in mainland China have opened urban rail transit, with a total mileage of more than 10,000 kilometers, of which subways dominate. Due to the dense urban population and ground traffic congestion, some urban rail transit stations are built in a deep buried way to reduce the impact on existing traffic and buildings. Deep buried stations are gradually increasing in mountainous cities. These stations usually have a large burial depth. As underground buildings, deep buried stations are mainly divided into separated structure type, multi-layer structure type and dark excavation structure type. Dark excavation structure stations construct station halls and platforms through large-section dark excavation, and are connected to the ground only through long entrance and exit passages. These passages have long travel distances and large inclination angles due to their deep burial depth, which increases the difficulty of smoke prevention and personnel evacuation during fires.

[0003] In case of fire, the chimney effect of the deep station entrance and exit passages will cause the smoke to spread and settle rapidly, affecting visibility and personnel psychology, and increasing the difficulty of evacuation and rescue. As the main circulation path, the entrance and exit passages may face uncertain safety factors such as malicious arson, so the setting of smoke prevention and exhaust facilities must be able to cope with various potential dangers to ensure personnel safety and rescue efficiency. Studies have shown that high-temperature smoke and toxic gases are the main factors that cause harm to personnel in fires, so a reasonable ventilation system is crucial to remove or control smoke.

[0004] To this end, we propose a smoke control system and method for the entrance and exit passages of deep-buried stations with semi-transverse ventilation. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a semi-transverse ventilation smoke control system for deep-buried station entrance and exit passages.

[0006] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0007] A semi-transversely ventilated smoke control system for a deep-buried station entrance and exit passage, comprising: a smoke monitoring unit, arranged in a smoke-proof partition of the deep-buried station entrance and exit passage, for monitoring smoke concentration, temperature and visibility in the smoke-proof partition; a central processing unit, for receiving monitoring data from the smoke monitoring unit and processing the data; a smoke exhaust channel, opened in each smoke-proof partition, for providing a channel for smoke exhaust, and all smoke exhaust channels are connected to a smoke exhaust main pipe; an execution unit, arranged on the smoke exhaust main pipe, for exhausting smoke from the smoke exhaust channel, and the execution unit and the central processing unit are electrically connected.

[0008] By setting up a smoke monitoring unit, the fire situation in the smoke-proof partition is monitored and transmitted to the central processing unit. The central processing unit controls the opening and closing of the smoke exhaust channel according to the data to achieve accurate exhaust of smoke. In addition, by setting up a semi-transverse ventilation smoke exhaust system, the advantages of longitudinal ventilation and full transverse ventilation are taken into account at the same time. Setting up a smoke exhaust channel at the entrance and exit channels can discharge the smoke in the entrance and exit channels in time, will not affect the evacuation of personnel, and can also ensure the economy of system construction and operation and maintenance.

[0009] It is further defined that each smoke partition includes an inclined staircase and a ceiling located at the top of the staircase.

[0010] It is further defined that the smoke monitoring unit includes a smoke sensor, a temperature sensor and a visibility sensor, and the smoke sensor, the temperature sensor and the visibility sensor are all electrically connected to the central processing unit.

[0011] It is further defined that the smoke exhaust main pipe is arranged in the ceiling along the central axis of the channel of each smoke proof zone, a number of smoke exhaust channels are opened in each smoke proof zone, the smoke sensor, temperature sensor and visibility sensor are all arranged at the entrance of the smoke exhaust channel of the smoke proof zone, and the exhaust end of the smoke exhaust main pipe is connected with the execution unit; setting the smoke sensor, temperature sensor and visibility sensor at the smoke exhaust port of the smoke proof zone can improve the accuracy of the collected data.

[0012] It is further defined that the execution unit includes a fan room and a plurality of exhaust fans arranged in the fan room, the fan room is connected to an exhaust pipe connected to the outside of the room, and the exhaust fans are electrically connected to the central processing unit.

[0013] A smoke control method, using the above-mentioned semi-transverse ventilation deep-buried station access passage smoke control system, comprises the following steps:

[0014] S1: Divide the entrance and exit into several smoke-proof zones along the evacuation direction of the station entrance and exit, and define the evacuation direction as upstream and the direction opposite to the evacuation direction as downstream;

[0015] S2: The smoke monitoring unit in each smoke-proof zone monitors the smoke in the smoke-proof zone, and transmits the monitored smoke concentration, temperature, visibility data and the position code of the smoke-proof zone to the central processing unit;

[0016] S3: The central processing unit analyzes the received data and determines the location of the smoke-proof partition where the fire occurs;

[0017] S4: The smoke-proof partition where the fire occurs is defined as the fire section, and the smoke-proof partitions on both sides of the fire section are marked as the upstream fire section and the downstream fire section respectively;

[0018] S5: The central processing unit controls the smoke exhaust channel in the upstream fire section to remain closed and the smoke exhaust channel in the downstream fire section to open.

[0019] Through this control method, the operation mode of the smoke control system can be dynamically adjusted according to the fire development stage and changes in smoke characteristics, and the fire smoke can be discharged in time, which can effectively improve the efficiency of smoke discharge and enhance the safety of fire situations.

[0020] Further defined, step S3 specifically includes:

[0021] S31: When the smoke concentration in the smoke sensor data of a smoke-proof partition is greater than or equal to 100 ppm, the smoke concentration changes abnormally, and the central processing unit determines that the fire risk level of the smoke-proof partition is low;

[0022] S32: If the temperature of the smoke-proof partition rises by more than 10°C within 1 minute after the smoke data is monitored, the temperature changes abnormally, and based on step S31, the fire risk level of the smoke-proof partition is further determined to be medium;

[0023] S33: Based on steps S31 and S32, if the visibility of the smoke-proof partition changes abnormally and drops to 10m, the fire risk level of the smoke-proof partition is further determined to be high;

[0024] S34: When the fire risk level is determined to be high, it means that a fire has occurred in the smokeproof partition. After determining that the fire risk level of the smokeproof partition is high, the central processing unit calculates the fire source release rate Q′ in the smokeproof partition according to the received monitoring data:

[0025]

[0026] Where ΔT is the monitored flue gas temperature rise, h e is the equivalent height of the smoke plume, θ is the angle between the smoke plume and the vertical direction. Since the entrance and exit passages are composed of multiple horizontal sections and inclined sections, each smoke-proof partition also includes horizontal sections and inclined sections.

[0027] If the fire occurs in the horizontal section of the smoke partition, the equivalent height h e The calculation formula is as follows:

[0028]

[0029] If the fire occurs at the inclined section of the smoke partition, the equivalent height h e The calculation formula is as follows:

[0030]

[0031] Where h is the clear height of the entrance and exit passage, L0 is the horizontal length of the smoke partition, L1 is the inclined length of the smoke partition, and L f is the distance between the smokeproof partition and the entrance of the access passage, α is the inclination angle of the inclined section in the smokeproof partition, and the calculation formula of θ is as follows:

[0032] cosθ=(0.69ΔH) -12

[0033] Where ΔH is the total lift height of the downstream fire section.

[0034] When the fire risk level is low, it means that a fire may occur in the smokeproof partition. When the fire risk level is medium, it is further determined that the abnormal smoke concentration in the smokeproof partition may be caused by a fire.

[0035] It is further defined that step S5 specifically includes: when the fire source release rate Q′ is less than 1500KW, the central processing unit determines the fire in the smoke proof partition as a minor fire, and controls the smoke exhaust port in the smoke proof partition to open, so as to reduce the impact on the non-fire area; when the fire source release rate Q′ is greater than or equal to 1500KW, the central processing unit determines the fire in the smoke proof partition as a serious fire, and controls the smoke exhaust port of the smoke proof partition located in the downstream section of the fire to open, so as to quickly discharge the smoke.

[0036] The beneficial effects of the present invention are as follows: by setting up the above-mentioned smoke control system and smoke control method, the safety in the event of a fire is significantly improved, the risk of casualties is reduced, and precise control can reduce the impact of the fire on areas where no fire has occurred. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the steps of the control method of the present invention;

[0038] Figure 2 It is a schematic diagram of the partitions of the upward viewing angle of the control system in the present invention;

[0039] Figure 3It is a schematic diagram of the partitions of the control system in the present invention from a frontal perspective. DETAILED DESCRIPTION

[0040] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0041] Example:

[0042] like Figure 1-Figure 3 As shown, a semi-transversely ventilated deep-buried station entrance and exit passage smoke control system includes a smoke monitoring unit, a central processing unit, a smoke exhaust channel and an execution unit; the smoke monitoring unit is arranged in the smoke-proof partition of the deep-buried station entrance and exit passage, and is used to monitor the smoke concentration, temperature and visibility in the smoke-proof partition, the smoke monitoring unit includes a smoke sensor, a temperature sensor and a visibility sensor, and the smoke sensor, the temperature sensor and the visibility sensor are all electrically connected to the central processing unit, and each smoke-proof partition includes an inclined staircase and a ceiling at the top of the staircase; the central processing unit is used to receive the monitoring data of the smoke monitoring unit and process the data; the smoke exhaust channel is opened In each smoke-proof partition, it is used to provide a channel for smoke exhaust. All smoke exhaust channels are connected to a smoke exhaust main pipe. The smoke exhaust main pipe is arranged in the ceiling along the central axis of the channel of each smoke-proof partition. Several smoke exhaust channels are opened in each smoke-proof partition. Smoke sensors, temperature sensors, and visibility sensors are all arranged at the entrance of the smoke exhaust channel of the smoke-proof partition. The exhaust end of the smoke exhaust main pipe is connected to the execution unit; the execution unit is arranged on the smoke exhaust main pipe and is used to exhaust smoke from the smoke exhaust channel. The execution unit includes a fan room and several exhaust fans arranged in the fan room. The fan room is connected with an exhaust pipe connected to the outside of the room. The exhaust fan and the central processing unit are electrically connected.

[0043] By setting up a smoke monitoring unit, the fire situation in the smoke-proof partition is monitored and transmitted to the central processing unit. The central processing unit controls the opening and closing of the smoke exhaust channel according to the data to achieve accurate discharge of smoke. Setting up smoke exhaust channels at the entrance and exit channels can discharge the smoke in the entrance and exit channels in time without affecting the evacuation of personnel, and can also ensure the economy of system construction and operation and maintenance; installing smoke sensors, temperature sensors, and visibility sensors at the smoke exhaust outlet of the smoke-proof partition can improve the accuracy of the collected data.

[0044] A smoke control method, using the above-mentioned semi-transverse ventilation deep-buried station access passage smoke control system, comprises the following steps:

[0045] S1: Divide the entrance and exit into several smoke-proof zones along the evacuation direction of the station entrance and exit, and define the evacuation direction as upstream and the direction opposite to the evacuation direction as downstream;

[0046] S2: The smoke monitoring unit in each smoke-proof zone monitors the smoke in the smoke-proof zone, and transmits the monitored smoke concentration, temperature, visibility data and the position code of the smoke-proof zone to the central processing unit;

[0047] S3: The central processing unit analyzes the received data and determines the location of the smoke-proof partition where the fire occurs;

[0048] S31: When the smoke concentration in the smoke sensor data of a smoke-proof partition is greater than or equal to 100 ppm, the smoke concentration changes abnormally, and the central processing unit determines that the fire risk level of the smoke-proof partition is low;

[0049] S32: If the temperature of the smoke-proof partition rises by more than 10°C within 1 minute after the smoke data is monitored, the temperature changes abnormally, and based on step S31, the fire risk level of the smoke-proof partition is further determined to be medium;

[0050] S33: Based on steps S31 and S32, if the visibility of the smoke-proof partition changes abnormally and drops to 10m, the fire risk level of the smoke-proof partition is further determined to be high;

[0051] S34: When the fire risk level is determined to be high, it means that a fire has occurred in the smokeproof partition. After determining that the fire risk level of the smokeproof partition is high, the central processing unit calculates the fire source release rate Q′ in the smokeproof partition according to the received monitoring data:

[0052]

[0053] Where ΔT is the monitored flue gas temperature rise, h e is the equivalent height of the smoke plume, θ is the angle between the smoke plume and the vertical direction. Since the entrance and exit passages are composed of multiple horizontal sections and inclined sections, each smoke-proof partition also includes horizontal sections and inclined sections.

[0054] If the fire occurs in the horizontal section of the smoke partition, the equivalent height h e The calculation formula is as follows:

[0055]

[0056] If the fire occurs at the inclined section of the smoke partition, the equivalent height h e The calculation formula is as follows:

[0057]

[0058] Where h is the clear height of the entrance and exit passage, L0 is the horizontal length of the smoke partition, L1 is the inclined length of the smoke partition, and L f is the distance between the smokeproof partition and the entrance of the access passage, α is the inclination angle of the inclined section in the smokeproof partition, and the calculation formula of θ is as follows:

[0059] cosθ=(0.69ΔH) -12

[0060] Where ΔH is the total lift height of the downstream fire section;

[0061] S4: The smoke-proof partition where the fire occurs is defined as the fire section, and the smoke-proof partitions on both sides of the fire section are marked as the upstream fire section and the downstream fire section respectively;

[0062] S5: When the fire source release rate Q′ is less than 1500KW, the central processing unit determines the fire in the smoke proof partition as a minor fire and controls the smoke exhaust port in the smoke proof partition to open to reduce the impact on the non-fire area; when the fire source release rate Q′ is greater than or equal to 1500KW, the central processing unit determines the fire in the smoke proof partition as a serious fire and controls the smoke exhaust port of the smoke proof partition located in the downstream section of the fire to open to quickly discharge the smoke.

[0063] Through this control method, the operation mode of the smoke control system can be dynamically adjusted according to the fire development stage and changes in smoke characteristics, and the fire smoke can be discharged in time, which can effectively improve the efficiency of smoke discharge and improve the safety of fire situations. When the fire risk level is low, it means that a fire may occur in the smoke proof partition. When the fire risk level is medium, it is further determined that the abnormal smoke concentration in the smoke proof partition may be caused by a fire.

[0064] Each smoke exhaust channel is equipped with a status detection device, which can monitor the opening and closing status, fault conditions and whether it is blocked in real time. The central processing unit will regularly detect the working status of each smoke exhaust channel and record its performance data. If a smoke exhaust channel fails, the system will automatically enable the smoke exhaust channel in the adjacent area as a backup to ensure that the smoke exhaust efficiency is not affected. In addition, the system has a fault alarm function. When a fault is found in the smoke exhaust channel or monitoring equipment, the system will send a fault alarm message to the control center to remind maintenance personnel to intervene in time.

[0065] In the absence of a fire, the signal transmission frequency between the smoke monitoring unit and the central processing unit is once per minute, so as to monitor the temperature, smoke concentration and visibility in the channel in real time; when the smoke monitoring unit detects abnormal data, the signal transmission frequency between the smoke monitoring unit and the central processing unit is shortened to once every 10 seconds to ensure timely updating of data; when the central processing unit determines that it is a fire state based on the abnormal data, the signal transmission frequency between the smoke monitoring unit and the central processing unit is further shortened to once per second, ensuring that the central processing unit can receive data in real time and make accurate judgments. To ensure the reliability of signal transmission, the system is designed with a dual-channel communication protocol, that is, data is transmitted through both wired and wireless methods. When one of the transmission methods fails, the other method automatically takes over.

[0066] In addition, the central processing unit has a regular self-inspection function, which can automatically detect the working status of the smoke exhaust port, smoke monitoring device and signal transmission equipment, and store the self-inspection results; if certain components in the system are close to their design life or their performance has declined, the central processing unit will automatically issue a maintenance reminder to notify maintenance personnel to inspect or replace the equipment to ensure that the system can work normally when a fire occurs.

[0067] In actual use of the system, Figure 2 As shown, when the monitoring device in smoke zone I detects a severe fire, the system will automatically start the severe fire mode of smoke exhaust zone I to deal with possible severe fire emergencies;

[0068] After the severe fire mode is activated, all smoke exhaust channels in smoke-proof partition I, including those numbered 1, 2, 3, 4, 5 and 6, will be opened quickly; these smoke exhaust channels are opened to quickly exhaust the smoke in the area and prevent smoke accumulation, thereby providing a clear view and breathing space for personnel evacuation and fire rescue. At the same time, the actuators corresponding to these smoke exhaust channels will also be automatically opened to enhance the smoke exhaust effect and ensure that the smoke can be effectively extracted;

[0069] In addition, the system will automatically open all smoke exhaust channels in smoke exhaust zone II, including smoke exhaust channels numbered 7, 8, 9, 10, 11 and 12. This measure is because the strong chimney effect in the entrance and exit channels makes it difficult for smoke to meet the regulatory requirements - to suppress smoke in the fire-proof smoke zone. Therefore, it is necessary to open the downstream smoke exhaust channel for smoke exhaust, so as to protect more people and property safety;

[0070] Similarly, all smoke exhaust channels in smoke zone III and all downstream smoke zones, namely, smoke exhaust channels numbered 13, 14, 15, 16, 17 and 18, will also be automatically opened; such a linkage mechanism ensures that the entire building can respond quickly when a serious fire occurs, and reduce the damage to personnel and building structures caused by serious fires through effective smoke exhaust measures.

[0071] When the monitoring device in the smoke partition II detects a severe fire, the system will automatically start the severe fire mode of the smoke partition II to deal with the potential severe fire threat;

[0072] After the severe fire mode is activated, all smoke exhaust channels in smoke zone II, including those numbered 7, 8, 9, 10, 11 and 12, will be opened quickly; these smoke exhaust channels are opened to quickly remove smoke from the area and reduce the obstruction of smoke to personnel evacuation and fire rescue operations. At the same time, the actuators corresponding to these smoke exhaust channels will also be automatically opened to enhance the smoke exhaust effect and ensure that the smoke can be effectively extracted;

[0073] In order to further control the spread of smoke, the system will automatically open all smoke exhaust channels in and downstream of smoke control zone III; this includes smoke exhaust channels numbered 13, 14, 15, 16, 17 and 18; such a linkage mechanism helps to form an effective smoke exhaust network, directing smoke to a safe area, thereby protecting more people and property safety;

[0074] At the same time, in order to prevent smoke from spreading through unaffected areas, the system will close all smoke exhaust channels in smoke-proof partition I. This includes smoke exhaust channels numbered 1, 2, 3, 4, 5 and 6, which are usually closed under normal working conditions; closing these smoke exhaust channels is to prevent the upstream smoke exhaust channels from affecting the thermal pressure effect, thereby causing more turbulent smoke flow in the channels. At the same time, it is easy to inhale smoke into the upstream smoke-proof partition, making the evacuation environment worse.

[0075] When the monitoring device in smoke zone III detects a severe fire, the system will automatically start the severe fire mode of smoke exhaust zone III to deal with possible severe fire emergencies;

[0076] After the severe fire mode is activated, all smoke exhaust channels in smoke zone III, including those numbered 13, 14, 15, 16, 17 and 18, will be opened quickly; these smoke exhaust channels are opened to quickly remove smoke in the area and reduce the obstruction of smoke to personnel evacuation and fire rescue operations; at the same time, the execution units corresponding to these smoke exhaust channels will also be automatically opened to enhance the smoke exhaust effect and ensure that the smoke can be effectively extracted;

[0077] In order to further control the spread of smoke, the system will automatically open all downstream smoke exhaust channels. Such a linkage mechanism helps to form an effective smoke exhaust network, guide the smoke to a safe area, and thus protect more people and property safety;

[0078] At the same time, in order to prevent the spread of smoke through unaffected areas, the system will close all smoke exhaust channels in smoke partitions I and II; this includes smoke exhaust channels numbered 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12, which are usually closed under normal working conditions; closing these smoke exhaust channels is to prevent the smoke from being affected by the smoke exhaust upstream of the fire source, thereby avoiding deterioration of the safety environment in the channels.

Claims

1. A semi-transverse ventilation deep buried station access passage smoke control system, characterized in that: include: The smoke monitoring unit is installed in the smoke-proof partition of the deep-buried station entrance and exit passage and is used to monitor the smoke concentration, temperature and visibility in the smoke-proof partition; A central processing unit, used for receiving the monitoring data of the flue gas monitoring unit and processing the data; A smoke exhaust channel is provided in each of the smoke-proof partitions and is used to provide a channel for smoke exhaust, and all of the smoke exhaust channels are connected to a smoke exhaust main pipe; The execution unit is arranged on the smoke exhaust main pipe and is used to exhaust the smoke from the smoke exhaust channel. The execution unit is electrically connected to the central processing unit.

2. The semi-transverse ventilation deep-buried station access passage smoke control system according to claim 1 is characterized in that: Each of the smoke-proof partitions includes an inclined staircase and a ceiling located at the top of the staircase.

3. The semi-transverse ventilation deep-buried station access passage smoke control system according to claim 2 is characterized in that: The smoke monitoring unit comprises a smoke sensor, a temperature sensor and a visibility sensor, and the smoke sensor, the temperature sensor and the visibility sensor are all electrically connected to the central processing unit.

4. The semi-transverse ventilation deep-buried station access passage smoke control system according to claim 3 is characterized in that: The smoke exhaust main pipe is arranged in the ceiling along the central axis of the channel of each smoke-proof partition. A plurality of smoke exhaust channels are opened in each smoke-proof partition. The smoke sensor, temperature sensor and visibility sensor are all arranged at the entrance of the smoke exhaust channel of the smoke-proof partition. The exhaust end of the smoke exhaust main pipe is connected to the execution unit.

5. The semi-transverse ventilation deep-buried station access passage smoke control system according to claim 4 is characterized in that: The execution unit includes a fan room and a plurality of exhaust fans arranged in the fan room. The fan room is connected with an exhaust pipe connected to the outside of the room. The exhaust fans are electrically connected to the central processing unit.

6. A smoke control method, using the semi-transverse ventilation deep-buried station access passage smoke control system as claimed in any one of claims 1 to 5, characterized in that: The steps include: S1: Divide the entrance and exit into several smoke-proof zones along the evacuation direction of the station entrance and exit, and define the evacuation direction as upstream and the direction opposite to the evacuation direction as downstream; S2: The smoke monitoring unit in each smoke-proof zone monitors the smoke in the smoke-proof zone, and transmits the monitored smoke concentration, temperature, visibility data and the position code of the smoke-proof zone to the central processing unit; S3: The central processing unit analyzes the received data and determines the location of the smoke-proof partition where the fire occurs; S4: The smoke-proof partition where the fire occurs is defined as the fire section, and the smoke-proof partitions on both sides of the fire section are marked as the upstream fire section and the downstream fire section respectively; S5: The central processing unit controls the smoke exhaust channel in the upstream fire section to remain closed and the smoke exhaust channel in the downstream fire section to open.

7. A smoke control method according to claim 6, characterized in that: The step S3 specifically includes: S31: When the smoke concentration in the smoke sensor data of a smoke-proof partition is greater than or equal to 100 ppm, the smoke concentration changes abnormally, and the central processing unit determines that the fire risk level of the smoke-proof partition is low; S32: If the temperature of the smoke-proof partition rises by more than 10°C within 1 minute after the smoke data is monitored, the temperature changes abnormally, and based on step S31, the fire risk level of the smoke-proof partition is further determined to be medium; S33: Based on steps S31 and S32, if the visibility of the smoke-proof partition changes abnormally and drops to 10m, the fire risk level of the smoke-proof partition is further determined to be high; S34: When the fire risk level is determined to be high, it means that a fire has occurred in the smokeproof partition. After determining that the fire risk level of the smokeproof partition is high, the central processing unit calculates the fire source release rate Q′ in the smokeproof partition according to the received monitoring data: Where ΔT is the monitored flue gas temperature rise, h e is the equivalent height of the smoke plume, θ is the angle between the smoke plume and the vertical direction. Since the entrance and exit passages are composed of multiple horizontal sections and inclined sections, each smoke-proof partition also includes horizontal sections and inclined sections. If the fire occurs in the horizontal section of the smoke partition, the equivalent height h e The calculation formula is as follows: If the fire occurs at the inclined section of the smoke partition, the equivalent height h e The calculation formula is as follows: Where h is the clear height of the entrance and exit passage, L0 is the horizontal length of the smoke partition, L1 is the inclined length of the smoke partition, and L f is the distance between the smokeproof partition and the entrance of the access passage, α is the inclination angle of the inclined section in the smokeproof partition, and the calculation formula of θ is as follows: cosθ=(0.69ΔH) -12 Where ΔH is the total lift height of the downstream fire section.

8. A smoke control method according to claim 6, characterized in that: The step S5 specifically includes: when the fire source release rate Q' is less than 1500KW, the central processing unit determines the fire in the smoke-proof partition as a light fire and controls the smoke exhaust port in the smoke-proof partition to open, so as to reduce the impact on the non-fire area; when the fire source release rate Q' is greater than or equal to 1500KW, the central processing unit determines the fire in the smoke-proof partition as a severe fire and controls the smoke exhaust port of the smoke-proof partition located in the downstream section of the fire to open, so as to quickly discharge the smoke.

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