Piston air duct structure of subway station

Abstract

The utility model discloses a piston air duct structure of subway station, including main piston air duct, one side fixed mounting of main piston air duct bottom end has first auxiliary piston air duct, the other side fixed mounting of main piston air duct bottom end has second auxiliary piston air duct, and the bottom of second auxiliary piston air duct and first auxiliary piston air duct all are fixed with the overhauling air duct, and the one end fixed of overhauling air duct away from first auxiliary piston air duct has the air inlet channel, and the one end fixed of overhauling air duct away from second auxiliary piston air duct has the air outlet channel, and the top fixed mounting of main piston air duct has nut seat, and the top screw installation of nut seat has screw rod, and the bottom extension of screw rod reaches the inside of nut seat and rotates and installs the air duct block. The utility model not only has reached the purpose of easily adjusting piston air flow rate, has also reduced the phenomenon that personnel misenters piston air duct structure, and has improved air quality, and has reached the purpose of easily overhauling maintenance to piston air duct structure.

Description

Technical Field

[0001] This utility model relates to the technical field of urban rail transit ventilation systems, specifically a piston duct structure for subway stations. Background Technology

[0002] When a subway train runs at high speed in a tunnel, its body strongly compresses the air in front of it, forming a high-pressure wave. At the same time, the rear of the train generates a negative pressure wave due to insufficient air supply. This periodic pressure change is transmitted through the tunnel to the station platform, concourse, and entrance passages, causing pressure shocks and affecting passenger comfort. Therefore, developing a piston duct structure for subway stations is of great practical significance.

[0003] Referring to the piston ventilation structure of a subway station (CN220828264U), the subway station has both open-cut and cut-and-cover structures. The piston ventilation structure includes: a first piston ventilation hole located on the tunnel sidewall in the cut-and-cover structure; a first piston ventilation duct located inside the tunnel sidewall in the cut-and-cover structure, with its inlet end connected to the first piston ventilation hole; a second piston ventilation duct located in the open-cut structure, with its inlet end connected to the outlet end of the first piston ventilation duct; and a second piston ventilation hole located on the ground and connected to the outlet end of the second piston ventilation duct. As can be seen from the above, although this piston ventilation structure can be well applied, it is generally not convenient to adjust the opening and closing size of the ventilation duct as needed, and it is difficult to adjust the flow rate of the piston air, requiring further improvement. Utility Model Content

[0004] The purpose of this utility model is to provide a piston air duct structure for subway stations, so as to solve the problem that although the piston air duct structure mentioned in the background art can be well applied, it is usually not convenient to adjust the opening and closing size of the air duct as needed, and it is difficult to adjust the piston air flow rate.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a piston air duct structure for a subway station, comprising a main piston air duct, a first auxiliary piston air duct fixedly installed on one side of the bottom end of the main piston air duct, and a second auxiliary piston air duct fixedly installed on the other side of the bottom end of the main piston air duct. Both the second and first auxiliary piston air ducts have maintenance air ducts fixedly installed at their bottom ends. An air inlet channel is fixedly installed at the end of the maintenance air duct away from the first auxiliary piston air duct, and an air outlet channel is fixedly installed at the end of the maintenance air duct away from the second auxiliary piston air duct. A nut seat is fixedly installed at the top end of the main piston air duct, and a screw is threadedly installed at the top end of the nut seat. The bottom end of the screw extends into the interior of the nut seat and is rotatably fitted with an air duct baffle. A closed cavity is provided at the bottom of the main piston air duct below the air duct baffle, and a handle is installed at the top end of the screw.

[0006] Preferably, a first filter screen is installed at the upper end of the first auxiliary piston air duct, and a second filter screen is installed at the upper end of the second auxiliary piston air duct. The arrangement of the second filter screen and the first filter screen is to filter the circulating piston air.

[0007] Preferably, a perforated air inlet plate is installed at the bottom of the air inlet channel, and a perforated air outlet plate is installed at the bottom of the air outlet channel. The perforated air outlet plate and the perforated air inlet plate reduce the risk of people accidentally entering the air outlet channel and the air inlet channel.

[0008] Preferably, a first air duct opening is provided at the bottom of the main piston air duct above the first auxiliary piston air duct, and a second air duct opening is provided at the bottom of the main piston air duct above the second auxiliary piston air duct. The arrangement of the second air duct opening and the first air duct opening allows piston air to flow into or out of the main piston air duct.

[0009] Preferably, a rectangular panel is installed on the outer wall of one side of the maintenance air duct, and a viewing window is fixedly installed inside the rectangular panel. The rectangular panel is used to block and close the opening on the outer wall of the maintenance air duct.

[0010] Preferably, a plurality of locking bolts are installed at the edge of the outer wall of the rectangular panel. One end of the locking bolt passes through the rectangular panel and is threadedly connected to the outer wall of the maintenance air duct. By having one end of the locking bolt pass through the rectangular panel and screw it into the outer wall of the maintenance air duct, the rectangular panel is bolted and installed on the outer wall of the maintenance air duct.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the piston air duct structure of the subway station not only achieves the purpose of easy adjustment of piston air flow rate, but also reduces the phenomenon of people accidentally entering the piston air duct structure, improves air quality, and achieves the purpose of easy inspection and maintenance of piston air duct structure.

[0012] (1) By twisting the handle, the screw is driven to rotate and slide inside the nut seat, so that the screw drives the nut seat to move up and down. The opening and closing size of the main piston air passage can be adjusted as needed. When the air passage block moves down into the closed cavity, the main piston air passage can be closed, thereby achieving the purpose of easily adjusting the piston air flow rate.

[0013] (2) By setting perforated air inlet plates and perforated air outlet plates at the bottom of the air inlet and air outlet channels respectively, the air inlet and air outlet channels are blocked while satisfying the piston air flow. Furthermore, the first and second filters are used to filter the circulating piston air, thereby reducing the phenomenon of personnel accidentally entering the piston air duct structure and improving air quality.

[0014] (3) By tightening the locking bolt, one end of the locking bolt is screwed out to the outside of the maintenance air duct, so that the rectangular panel can be removed from the outer wall of the maintenance air duct, so that the opening of the outer wall of the maintenance air duct is in an open or closed state, making it easier for personnel to enter the interior of the piston air duct structure through this opening, thereby achieving the purpose of easy maintenance of the piston air duct structure. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a frontal cross-sectional view of the present invention.

[0017] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0018] Figure 4 This is a top view of the structure of the first auxiliary piston air duct of this utility model;

[0019] Figure 5 This is a schematic diagram of the air inlet channel structure from below.

[0020] In the diagram: 1. Main piston air duct; 2. First auxiliary piston air duct; 201. First filter screen; 3. Maintenance air duct; 4. Air inlet channel; 401. Hollowed-out air inlet plate; 5. Second auxiliary piston air duct; 501. Second filter screen; 6. Air outlet channel; 601. Hollowed-out air outlet plate; 7. Nut seat; 8. Screw; 9. Handle; 10. Air duct baffle; 11. Closed cavity; 12. First air duct opening; 13. Second air duct opening; 14. Rectangular panel; 15. Viewing window; 16. Locking bolt. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] Please see Figure 1-5 An embodiment of this utility model is provided: a piston air duct structure for a subway station, including a main piston air duct 1, a first auxiliary piston air duct 2 fixedly installed on one side of the bottom end of the main piston air duct 1, a first filter screen 201 installed at the upper end of the interior of the first auxiliary piston air duct 2, and a second filter screen 501 installed at the upper end of the interior of the second auxiliary piston air duct 5.

[0023] In use, the second filter 501 and the first filter 201 are set together to filter the circulating piston air.

[0024] The bottom of the main piston air duct 1 above the first auxiliary piston air duct 2 is provided with a first air duct opening 12, and the bottom of the main piston air duct 1 above the second auxiliary piston air duct 5 is provided with a second air duct opening 13.

[0025] In use, the second air duct 13 and the first air duct 12 are set so that the piston air flows into or out of the main piston air duct 1.

[0026] A second auxiliary piston air duct 5 is fixedly installed on the other side of the bottom of the main piston air duct 1. Both the bottom of the second auxiliary piston air duct 5 and the first auxiliary piston air duct 2 are fixed with maintenance air duct 3. A rectangular panel 14 is installed on the outer wall of one side of the maintenance air duct 3. A viewing window 15 is fixedly installed inside the rectangular panel 14.

[0027] In use, the rectangular panel 14 is set to block and close the opening on the outer wall of the maintenance air duct 3.

[0028] Several locking bolts 16 are installed at the edge of the outer wall of the rectangular panel 14. One end of the locking bolt 16 passes through the rectangular panel 14 and is threadedly connected to the outer wall of the maintenance air duct 3.

[0029] In use, one end of the locking bolt 16 passes through the rectangular panel 14 and is screwed into the outer wall of the maintenance air duct 3 so that the rectangular panel 14 can be bolted and installed on the outer wall of the maintenance air duct 3.

[0030] An air inlet channel 4 is fixed at the end of the maintenance air duct 3 away from the first auxiliary piston air duct 2. A hollow air inlet plate 401 is installed at the bottom of the air inlet channel 4, and a hollow air outlet plate 601 is installed at the bottom of the air outlet channel 6.

[0031] In use, the perforated air outlet plate 601 and the perforated air inlet plate 401 are designed to reduce the risk of people accidentally entering the air outlet channel 6 and the air inlet channel 4.

[0032] An air outlet channel 6 is fixed at the end of the maintenance air duct 3 away from the second auxiliary piston air duct 5. A nut seat 7 is fixedly installed at the top of the main piston air duct 1. A screw 8 is threadedly installed at the top of the nut seat 7. The bottom end of the screw 8 extends into the interior of the nut seat 7 and is rotatably installed with an air duct baffle 10. A closed cavity 11 is provided at the bottom of the main piston air duct 1 below the air duct baffle 10. A handle 9 is installed at the top of the screw 8.

[0033] In this embodiment, the piston air duct structure is first installed on the wall of a subway station, with the air inlet duct 4 at the front end and the air outlet duct 6 at the rear end. When the train is moving, a high-pressure piston airflow is formed in front of the train, and a low-pressure piston airflow is formed behind the train. During this process, the piston airflow at the front of the train flows into the main piston air duct 1 through the air inlet duct 4 and the first auxiliary piston air duct 2. Subsequently, this portion of the piston airflow flows into the rear of the train through the second auxiliary piston air duct 5 and the air outlet duct 6 to facilitate the flow of the piston airflow. A perforated air inlet plate 401 and a perforated air outlet plate 601 are respectively installed at the bottom of the air inlet duct 4 and the air outlet duct 6 to seal the air inlet duct 4 and the air outlet duct 6 while ensuring the flow of the piston airflow. Furthermore, the first filter screen 201 and the second filter screen 501 filter the flowing piston airflow, thereby effectively reducing the occurrence of personnel accidentally entering the piston air duct structure and effectively improving air quality. Then, by turning the handle 9, the drive screw 8 is rotated and slid inside the nut seat 7, causing the screw 8 to move the nut seat 7 up and down. This allows the opening and closing size of the main piston air duct 1 to be adjusted as needed. When the air duct baffle 10 moves down into the closed cavity 11, the main piston air duct 1 can be closed, making it easier to adjust the flow rate of the piston air. Furthermore, the handle 9 is located in a closed control chamber to reduce the possibility of accidental activation or self-rotation of the handle 9. If further assurance is needed regarding the operation of the handle 9... To prevent accidental activation when stationary, a locking mechanism can be installed between the handle 9 and the main piston air duct 1. This will not be described in detail here. Finally, by turning the locking bolt 16, one end of the locking bolt 16 is screwed out to the outside of the maintenance air duct 3, and the rectangular panel 14 can be removed from the outer wall of the maintenance air duct 3. This allows the opening on the outer wall of the maintenance air duct 3 to be in an open or closed state, making it easier for personnel to enter the interior of the piston air duct structure through this opening for maintenance work, thus completing the use of the piston air duct structure.

Claims

1. A piston ventilation duct structure for a subway station, characterized in that: The system includes a main piston air duct (1), a first auxiliary piston air duct (2) fixedly installed on one side of the bottom end of the main piston air duct (1), and a second auxiliary piston air duct (5) fixedly installed on the other side of the bottom end of the main piston air duct (1). Both the second auxiliary piston air duct (5) and the first auxiliary piston air duct (2) have maintenance air ducts (3) fixedly installed at their bottom ends. An air inlet channel (4) is fixed to the end of the maintenance air duct (3) furthest from the first auxiliary piston air duct (2). One end of the auxiliary piston air duct (5) is fixed with an air outlet channel (6). The top end of the main piston air duct (1) is fixedly installed with a nut seat (7). The top end of the nut seat (7) is threaded with a screw (8). The bottom end of the screw (8) extends into the interior of the nut seat (7) and is rotatably installed with an air duct baffle (10). The bottom of the main piston air duct (1) below the air duct baffle (10) is provided with a closed cavity (11). The top end of the screw (8) is installed with a handle (9).

2. The piston ventilation duct structure for a subway station according to claim 1, characterized in that: A first filter screen (201) is installed at the upper end of the first auxiliary piston air duct (2), and a second filter screen (501) is installed at the upper end of the second auxiliary piston air duct (5).

3. The piston ventilation duct structure for a subway station according to claim 1, characterized in that: The bottom end of the air inlet channel (4) is equipped with a perforated air inlet plate (401), and the bottom end of the air outlet channel (6) is equipped with a perforated air outlet plate (601).

4. The piston ventilation duct structure for a subway station according to claim 1, characterized in that: The bottom of the main piston duct (1) above the first auxiliary piston duct (2) is provided with a first duct opening (12), and the bottom of the main piston duct (1) above the second auxiliary piston duct (5) is provided with a second duct opening (13).

5. The piston ventilation duct structure for a subway station according to claim 1, characterized in that: A rectangular panel (14) is installed on the outer wall of one side of the maintenance air duct (3), and a viewing window (15) is fixedly installed inside the rectangular panel (14).

6. The piston ventilation duct structure for a subway station according to claim 5, characterized in that: Several locking bolts (16) are installed at the edge of the outer wall of the rectangular panel (14). One end of the locking bolt (16) passes through the rectangular panel (14) and is threadedly connected to the outer wall of the maintenance air duct (3).

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