Subway platform door directional ventilation system based on piston wind effect
By adopting a directional ventilation system based on piston wind effect on the subway platform door, the problem of cold air entering the existing system in winter is solved, and through real-time temperature monitoring and adjustment, the power consumption of air conditioners is reduced and the subway operation cost is reduced.
Patent Information
- Application Number
- CN202421991075.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-16
AI Technical Summary
The existing subway station door ventilation system lacks circulation direction, which leads to a large amount of outdoor cold air entering the station in winter, causing adverse thermal environments and relying on large air-conditioning facilities to consume a lot of electricity, increasing the cost of use.
The directional ventilation system of the subway platform door based on the piston wind effect is adopted. The system includes the main air duct, the temperature-controlled air valve, the alloy one-way blade, the air supply air duct and the exhaust air duct. Directional ventilation is achieved through the temperature sensor and the central controller in real time to monitor and adjust the opening and closing of the air duct.
In summer and winter, the air ducts are adjusted separately to adjust the platform temperature, reduce the output power of the air conditioner, save electricity, and reduce subway operating costs.
Smart Images
Figure CN222911875U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of subway directional ventilation equipment, in particular to a subway platform door directional ventilation system based on the piston wind effect. Background Art
[0002] With the acceleration of the urbanization process, the subway, as a large-capacity, high-efficiency, and low-pollution public transportation vehicle, has developed rapidly, and huge energy consumption has followed. As of the end of 2022, there are more than 5,000 operating subway stations in the inland of China, and the total power consumption has reached about 23 billion kWh. Among them, the energy consumption of the environmental control system accounts for as high as 30%-50%, which is the key to the subway's carbon reduction task. In addition to the existing traditional mechanical ventilation and air-conditioning systems, there is also a unique ventilation method of piston wind in underground subway projects. Piston wind ventilation refers to the generation of piston wind when a subway train runs in a restricted tunnel space, driving the air flow in the tunnel; when the train passes through a subway station, it can induce the air flow between the tunnel and the outdoor environment to flow through the subway station, thereby realizing the ventilation and air change of the subway space. This ventilation method can discharge the dirty air in the subway space without consuming additional energy. At the same time, it introduces fresh outdoor air to improve the air quality of the subway station. Therefore, the piston wind ventilation technology has great energy-saving potential. However, after the adjustable air vents of the existing subway platform doors are opened, their functions are similar to those of fixed grille air vents and do not have the circulation directivity. In winter, when the train enters the station, the piston wind drives the hot air in the tunnel into the platform, which can improve the thermal environment of the station; but when the train leaves the station, the piston wind entrains the air in the station, causing a large amount of outdoor cold air to enter the station, which is extremely unfavorable to the thermal environment of the station. In particular, with the northward shift of domestic subway construction, the construction and operation of subways in cold regions have gradually started. In regions such as Harbin and Hohhot, the problem of ensuring the thermal environment of subways in winter has attracted extensive attention.
[0003] To sum up, the existing subway generally adjusts the room temperature inside the subway station through air conditioners to reach a temperature suitable for the human body. Since large air-conditioning facilities are used inside the subway station, with high power and consuming a large amount of electric energy, a large amount of energy is lost, which in turn leads to the problem of increased subway operation costs. Content of the Utility Model
[0004] The utility model proposes a subway platform door directional ventilation system based on the piston wind effect to solve the problem that the existing subway generally adjusts the room temperature inside the subway station through air conditioners to reach a temperature suitable for the human body. Since large air-conditioning facilities are used inside the subway station, with high power and consuming a large amount of electric energy, a large amount of energy is lost, which in turn leads to the problem of increased subway operation costs.
[0005] The directional ventilation system for subway platform doors based on the piston wind effect of the present utility model comprises a main air duct 1, a temperature control air valve 2, an alloy one-way blade 3, a supply air duct 4, an exhaust air duct 5 and a ferromagnetic small blade 6;
[0006] One end of the supply air duct 4 and the exhaust air duct 5 is connected in parallel with one end of the main air duct 1. The other end of the main air duct 1 is connected to the outside of the subway platform. The other ends of the supply air duct 4 and the exhaust air duct 5 are connected to the inside of the subway platform. A temperature control air valve 2 is respectively provided at the connection of the supply air duct 4 and the exhaust air duct 5 with the main air duct 1. An alloy one-way blade 3 is respectively provided inside the supply air duct 4 and the exhaust air duct 5. The surface of the alloy one-way blade 3 is evenly processed with n ventilation holes, where n is a positive integer, and a ferromagnetic small blade 6 is provided at each ventilation opening, and the ferromagnetic small blade 6 is hinged to the edge of the ventilation opening;
[0007] Furthermore, the alloy one-way blade 3 inside the supply air duct 4 forms an angle of 70° with the axis of the main air duct 1, and the alloy one-way blade 3 is inclined to the right inside the supply air duct 4;
[0008] Furthermore, the alloy one-way blade 3 inside the exhaust air duct 5 forms an angle of 70° with the axis of the main air duct 1, and the alloy one-way blade 3 is inclined to the left inside the supply air duct 4;
[0009] Furthermore, the number n of ventilation holes on the alloy one-way blade 3 is n = 10;
[0010] Furthermore, the directional ventilation system for subway platform doors based on the piston wind effect further comprises a temperature sensor and a central controller. The temperature sensor is arranged on the wall inside the subway station. The temperature signal output end of the temperature sensor is connected to the temperature signal input end of the central controller. The drive signal of the central controller is connected to the temperature control air valve 2;
[0011] Furthermore, the central controller adopts a Siemens PLC controller;
[0012] Further, during use, in summer, the temperature sensor will monitor the temperature inside the subway station in real time. When the detected temperature is higher than the set temperature value, the temperature sensor will transmit the temperature signal to the central controller, and the central controller will then transmit the drive signal to the temperature control air valve 2 in the air supply duct 4 to close the temperature control air valve 2 in the air supply duct 4. The central controller will then transmit the drive signal to the temperature control air valve 2 in the exhaust duct 5 to open the temperature control air valve 2 in the exhaust duct 5. As a result, the air volume outside the subway station can normally pass through the main duct 1 and be conveyed into the subway station, while the air volume conveyed from the subway tunnel to the platform is reduced. Only the ferromagnetic small blades 6 on the alloy one-way blade 3 inside the exhaust duct 5 can be opened, allowing this air volume to enter the subway platform interior through the ventilation openings on the alloy one-way blade 3, thereby conveying more cooler air volume into the subway platform and adjusting the platform temperature to a suitable temperature in summer.
[0013] In winter, when the detected temperature is lower than the set temperature value, the temperature sensor will transmit the temperature signal to the central controller, and the central controller will then transmit the drive signal to the temperature control air valve 2 in the exhaust duct 5 to close the temperature control air valve 2 in the exhaust duct 5. The central controller will then transmit the drive signal to the temperature control air valve 2 in the air supply duct 4 to open the temperature control air valve 2 in the air supply duct 4. As a result, the air conveyed from the subway tunnel to the subway platform interior can normally pass through, while the air volume conveyed from the outdoor environment to the platform is reduced, thereby conveying more warmer air volume into the subway station and adjusting the platform temperature to a suitable temperature in winter.
[0014] The utility model has the following beneficial effects compared with the prior art:
[0015] The utility model overcomes the shortcomings of the prior art. One end of the air supply duct and the exhaust duct is connected in parallel with one end of the main duct, the other end of the main duct is connected to the outside of the subway platform, and the other ends of the air supply duct and the exhaust duct are evenly connected to the inside of the subway platform. A temperature control air valve is respectively provided at the connection of the air supply duct and the exhaust duct with the main duct. An alloy one-way blade is respectively provided inside the air supply duct and the exhaust duct. A plurality of ventilation holes are evenly processed on the surface of the alloy one-way blade, and a ferromagnetic small blade is provided at each ventilation opening, and the ferromagnetic small blade is hingedly connected to the edge of the ventilation opening. The temperature inside the subway station can be monitored in real time through the temperature sensor, and the opening and closing angles of the temperature control air valves inside the air supply duct and the exhaust duct can be controlled by using the central controller, so as to adjust the temperature inside the station in summer or winter, thereby assisting the air conditioner inside the subway station, reducing the output power of the air conditioner, saving electric energy, and further reducing the operating cost of the subway. Description of the Drawings
[0016] Figure 1It is a schematic structural diagram of the platform door directional ventilation system based on the piston wind effect described in the present utility model;
[0017] Figure 2 It is a schematic structural diagram of the series connection use state of multiple platform door directional ventilation systems based on the piston wind effect described in the present utility model;
[0018] Figure 3 It is a front view of the alloy one-way blade in the platform door directional ventilation system based on the piston wind effect described in the present utility model. Detailed implementation mode
[0019] Detailed implementation mode one: Combining Figures 1 to 3 To illustrate this implementation mode, the platform door directional ventilation system based on the piston wind effect described in this implementation mode includes a main air duct 1, a temperature control air valve 2, an alloy one-way blade 3, a supply air duct 4, an exhaust air duct 5, and a ferromagnetic small blade 6;
[0020] One end of the supply air duct 4 and the exhaust air duct 5 is connected in parallel with one end of the main air duct 1. The other end of the main air duct 1 is connected to the outside of the subway platform. The other ends of the supply air duct 4 and the exhaust air duct 5 are connected to the inside of the subway platform. A temperature control air valve 2 is respectively provided at the connection of the ends of the supply air duct 4 and the exhaust air duct 5 with the main air duct 1. An alloy one-way blade 3 is respectively provided inside the supply air duct 4 and the exhaust air duct 5. N ventilation holes are evenly processed on the surface of the alloy one-way blade 3, where n is a positive integer, and a ferromagnetic small blade 6 is provided at each ventilation opening, and the ferromagnetic small blade 6 is hingedly connected to the edge of the ventilation opening;
[0021] In this specific implementation mode, during use, in summer, the temperature sensor will monitor the temperature inside the subway station in real time. When the detected temperature is higher than the temperature set value, the temperature sensor will transmit the temperature signal to the central controller, and the central controller will then transmit the drive signal to the temperature control air valve 2 in the supply air duct 4 to close the temperature control air valve 2 in the supply air duct 4. The central controller will then transmit the drive signal to the temperature control air valve 2 in the exhaust air duct 5 to open the temperature control air valve 2 in the exhaust air duct 5, so that the air volume outside the subway station can pass through the main air duct 1 to the inside of the subway station normally, and the air volume transported from the subway tunnel to the platform is reduced, and only the ferromagnetic small blade 6 on the alloy one-way blade 3 inside the exhaust air duct 5 can be opened, so that the air volume can enter the subway platform through the ventilation opening on the alloy one-way blade 3, and then more air with lower temperature is transported into the subway platform, adjusting the platform temperature to the appropriate temperature in summer;
[0022] In winter, when the detected temperature is lower than the set temperature value, the temperature sensor transmits the temperature signal to the central controller. The central controller then transmits the driving signal to the temperature control air valve 2 in the exhaust air duct 5, causing the temperature control air valve 2 in the exhaust air duct 5 to close. The central controller then transmits the driving signal to the temperature control air valve 2 in the supply air duct 4, causing the temperature control air valve 2 in the supply air duct 4 to open. As a result, the air transported from the subway tunnel to the inside of the subway platform can pass through normally, and the amount of air transported from the outdoor environment to the platform decreases. Furthermore, more air with a higher temperature is transported to the inside of the subway station, adjusting the platform temperature to an appropriate temperature in winter.
[0023] Specific Embodiment 2: In combination with Figures 1 to 3 To illustrate this embodiment, this embodiment is a further limitation on the ventilation system described in Specific Embodiment 1. For the subway platform door directional ventilation system based on the piston wind effect described in this embodiment, the alloy one-way blade 3 inside the supply air duct 4 forms a 70° angle with the axis of the main air duct 1, and the alloy one-way blade 3 is inclined to the right inside the supply air duct 4;
[0024] In this specific embodiment, such a setting can ensure the smooth passage of the piston wind from the subway tunnel to the subway platform. A ferromagnetic small blade 6 structure is provided on the alloy one-way blade 3, and the ferromagnetic small blade 6 is attracted to the alloy one-way blade 3. The wind from the platform to the tunnel blows open the ferromagnetic small blade 6, ensuring that the wind can pass through.
[0025] Specific Embodiment 3: In combination with Figures 1 to 3 To illustrate this embodiment, this embodiment is a further limitation on the ventilation system described in Specific Embodiment 1. For the subway platform door directional ventilation system based on the piston wind effect described in this embodiment, the alloy one-way blade 3 inside the exhaust air duct 5 forms a 70° angle with the axis of the main air duct 1, and the alloy one-way blade 3 is inclined to the left inside the supply air duct 4;
[0026] In this specific embodiment, such a setting can ensure the smooth passage of the piston wind from the platform to the tunnel. A ferromagnetic small blade 6 structure is provided on the alloy one-way blade 3, and the wind from the tunnel to the platform blows open the ferromagnetic small blade 6, ensuring that the wind can pass through.
[0027] Specific Embodiment 4: In combination with Figures 1 to 3 To illustrate this embodiment, this embodiment is a further limitation on the ventilation system described in Specific Embodiment 1. For the subway platform door directional ventilation system based on the piston wind effect described in this embodiment, the number n of ventilation holes on the alloy one-way blade 3, n = 10;
[0028] In this specific embodiment, with such a setting, when the amount of air passing through the ferromagnetic small blade 6 is less than the amount of air passing through the alloy one-way blade 3, the amount of air passing through can be controlled, realizing the function of adjusting the temperature.
[0029] Specific Embodiment Five: In combination with Figures 1 to 3 This specific embodiment will be described. This specific embodiment further limits the ventilation system described in the first specific embodiment. The platform door directional ventilation system based on the piston wind effect described in this specific embodiment further includes a temperature sensor and a central controller. The temperature sensor is arranged on the wall inside the subway station. The temperature signal output end of the temperature sensor is connected to the temperature signal input end of the central controller, and the drive signal of the central controller is connected to the temperature control air valve 2.
[0030] Specific Embodiment Six: In combination with Figures 1 to 3 This specific embodiment will be described. This specific embodiment further limits the ventilation system described in the fifth specific embodiment. The central controller of the platform door directional ventilation system based on the piston wind effect described in this specific embodiment uses a Siemens PLC controller.
[0031] Working principle
[0032] When in use, in summer, the temperature sensor will monitor the temperature inside the subway station in real time. When the detected temperature is higher than the temperature set value, the temperature sensor will transmit the temperature signal to the central controller. The central controller then transmits the drive signal to the temperature control air valve 2 in the air supply duct 4, so that the temperature control air valve 2 in the air supply duct 4 closes. The central controller then transmits the drive signal to the temperature control air valve 2 in the exhaust duct 5, so that the temperature control air valve 2 in the exhaust duct 5 opens. Thus, the air volume outside the subway station is normally conveyed into the subway station through the main duct 1, and the air volume conveyed from the subway tunnel to the platform is reduced. And only the ferromagnetic small blades 6 on the alloy one-way blades 3 inside the exhaust duct 5 can be opened, so that this air volume enters the subway platform through the ventilation openings on the alloy one-way blades 3, and then conveys more air with a lower temperature into the subway platform, adjusting the platform temperature to tend to the suitable temperature in summer;
[0033] In winter, when the detected temperature is lower than the temperature set value, the temperature sensor will transmit the temperature signal to the central controller. The central controller then transmits the drive signal to the temperature control air valve 2 in the exhaust duct 5, so that the temperature control air valve 2 in the exhaust duct 5 closes. The central controller then transmits the drive signal to the temperature control air valve 2 in the air supply duct 4, so that the temperature control air valve 2 in the air supply duct 4 opens. Thus, the air conveyed from the subway tunnel to the subway platform can pass through normally, and the air volume conveyed from the outdoor environment to the platform is reduced. And then more air with a higher temperature is conveyed into the subway station, adjusting the platform temperature to tend to the suitable temperature in winter.
Claims
1. The subway platform door directional ventilation system based on piston wind effect is characterized by: It comprises a main air duct (1), a temperature control air valve (2), an alloy one-way blade (3), an air supply air duct (4), an air exhaust air duct (5) and a ferromagnetic small blade (6); One end of the air supply duct (4) and the exhaust duct (5) is connected in parallel with one end of the main duct (1), the other end of the main duct (1) is connected to the outside of the subway platform, and the other ends of the air supply duct (4) and the exhaust duct (5) are evenly connected to the inside of the subway platform. A temperature control air valve (2) is respectively provided at the connection between the end of the air supply duct (4) and the exhaust duct (5) and the main duct (1). An alloy unidirectional blade (3) is respectively provided inside the air supply duct (4) and the exhaust duct (5). The surface of the alloy unidirectional blade (3) is evenly processed with n ventilation holes, where n is a positive integer, and each ventilation opening is provided with a small ferromagnetic blade (6), and the small ferromagnetic blade (6) is hingedly connected to the edge of the ventilation opening.
2. The subway platform door directional ventilation system based on piston wind effect according to claim 1 is characterized by: The alloy one-way blades (3) inside the air supply duct (4) form an angle of 70° with the axis of the main air duct (1), and the alloy one-way blades (3) are arranged to be tilted to the right inside the air supply duct (4).
3. The subway platform door directional ventilation system based on piston wind effect according to claim 1 is characterized by: The alloy one-way blade (3) inside the exhaust air duct (5) forms an angle of 70° with the axis of the main air duct (1), and the alloy one-way blade (3) is arranged to be tilted to the left inside the air supply air duct (4).
4. The subway platform door directional ventilation system based on piston wind effect according to claim 1 is characterized by: The number n of ventilation holes on the alloy unidirectional blade (3) is n=10.
5. The subway platform door directional ventilation system based on piston wind effect according to claim 1 is characterized by: It also includes a temperature sensor and a central controller. The temperature sensor is arranged on a wall inside the subway station. The temperature signal output end of the temperature sensor is connected to the temperature signal input end of the central controller. The driving signal of the central controller is connected to the temperature control air valve (2).
6. The subway platform door directional ventilation system based on piston wind effect according to claim 5 is characterized by: The central controller adopts Siemens PLC controller.