Piston air damper device

Abstract

The utility model discloses a piston air damper device which comprises an air return baffle which is installed on the top of a tunnel, the air return baffle is provided with an air return part, and piston air generated by a train advancing in the tunnel can be guided through the air return part to generate backflow air. The backflow air can at least partially counteract piston air newly generated in the advancing process of the train, and the pressure intensity of the piston air generated when the train enters the station on a shielding door of the platform can be reduced. According to the utility model, the pressure of piston wind on the shielding door of the subway platform can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to a windshield device, in particular to a piston windshield device. Background Art

[0002] The transportation sector is a major carbon emitter and a key area for carbon reduction, with carbon emission control in urban transportation also receiving much attention. Among many urban transportation modes, the subway is known as "green transportation" for its advantages of speed, large capacity, low unit energy consumption and low pollution. However, there are some problems in its operation that need to be solved urgently. For example, when the subway is running at high speed, it will produce a "subway piston wind effect" in the tunnel. This "subway piston wind effect" will form a huge pressure difference inside and outside the fully enclosed platform screen door (hereinafter referred to as "screen door"), which may cause the screen door to burst and cause a safety accident. Among them, the "subway piston wind effect" refers to the phenomenon that when the train runs at high speed in the tunnel, it drives the air in the tunnel to flow at high speed, which in turn causes the air in the tunnel to compress or expand.

[0003] Therefore, it is necessary to study the impact of piston wind on subway platform screen doors to ensure the safe operation of subway trains. Utility Model Content

[0004] The utility model aims to provide a piston windshield device, which can effectively solve at least one defect of the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a piston wind windshield device, which includes: a return air baffle installed on the top of the tunnel, the return air baffle having a return air portion, through which the piston wind generated by the train traveling in the tunnel can be guided to generate return flow wind, and the return flow wind can at least partially offset the new piston wind generated by the train during its travel, and can reduce the pressure of the piston wind generated by the train when entering the station on the platform's screen door.

[0006] In some embodiments of the present invention, the air return portion extends downward in the tunnel and is inclined toward a horizontal center line of the tunnel.

[0007] In some embodiments of the present invention, the return air portion is inclined at an angle of 45° relative to a horizontal plane.

[0008] In some embodiments of the present invention, the return air baffle further has a wind shielding portion, which is arranged at at least one end of the return air portion along the traveling direction of the train.

[0009] In some embodiments of the present invention, the two wind shielding portions are respectively arranged at two ends of the air return portion along the traveling direction of the train.

[0010] In some embodiments of the present invention, the return air baffle is arranged at least in a train deceleration section of the tunnel adjacent to the platform.

[0011] In some embodiments of the present invention, the return air has a reverse force opposite to the traveling direction of the train, and the reverse force can act on the train to slow it down.

[0012] In some embodiments of the utility model, the piston wind wind shield device also includes: a power generation system, which includes an impeller arranged in the return air space formed by the return air baffle, and a generator drivingly connected to the impeller, and the power generation system can receive the piston wind through the impeller and convert the wind energy of the piston wind into electrical energy through the generator.

[0013] In some embodiments of the present invention, the power generation system further includes an energy storage device electrically connected to the generator, and the electrical energy output by the generator can be converted into chemical energy through the energy storage device.

[0014] In some embodiments of the present invention, the power generation system further includes an inverter unit electrically connected to the energy storage device, and the inverter unit can convert the chemical energy of the energy storage device into AC 220V mains electricity.

[0015] The piston wind windshield device of the utility model fully considers the action characteristics of the piston wind, and offsets the continuous influence of the piston wind by guiding the direction and utilizing its own effect, thereby greatly improving the safety factor of the shield door and reducing the influence and damage of the piston wind on the subway station facilities.

[0016] The piston wind shield device of the utility model can also react to the train when it needs to decelerate through the piston wind formed during the train acceleration, thereby forming a reverse force and producing an automatic braking effect, thereby reducing the braking consumption of the train and facilitating the braking of the train.

[0017] The piston wind windshield device of the utility model can also be equipped with a power generation system to utilize the difficult-to-use piston wind, convert kinetic energy into electrical energy, realize surplus energy recovery, reduce electricity consumption in subway stations, and comply with the current development trend of energy conservation and carbon reduction.

[0018] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other features and advantages of the present invention will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

[0020] Figure 1This is a schematic diagram of the structure of the piston windshield device of the utility model installed in a tunnel;

[0021] Figure 2 This is a schematic structural diagram of the piston windshield device of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the piston windshield device of the utility model installed by bolts;

[0023] Figure 4 for Figure 3 Side view of;

[0024] Figure 5 It is a schematic diagram of the sections of the subway lines;

[0025] Figure 6 A schematic diagram of using the piston wind windshield device of the utility model to achieve piston wind offset;

[0026] Figure 7 It is an exploded view of the return air force of the return air baffle plate of the piston wind baffle device of the utility model;

[0027] Figure 8 This is a schematic diagram of the return air function of the piston windshield device of the utility model;

[0028] Fig. 9 It is a schematic diagram of the piston wind windshield device with a power generation system of the utility model using piston wind to generate electricity. DETAILED DESCRIPTION

[0029] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0030] When introducing the elements / components / etc. described and / or illustrated herein, the terms "a", "an", "the", "said", and "at least one" are used to indicate that there are one or more of the elements / components / etc. The terms "comprising", "including", and "having" are used to indicate an open-ended inclusive sense and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.

[0031] like Figure 1 , Figure 2As shown, the piston wind shield device 1000 provided by the utility model mainly includes a return wind shield 100, which can be installed on the top of the tunnel 200. The return wind shield 100 has a return wind portion 10, through which the piston wind FA generated by the train 300 traveling in the tunnel 200 can be guided to generate return wind FR, and the return wind FR can at least partially offset the piston wind F21 newly generated by the train 300 during the travel (see Figure 6 , Figure 8 As shown), and can reduce the pressure of the piston wind generated by the train 300 when entering the station on the platform screen door. Preferably, the return air baffle 100 can be made of a material with light weight, high strength and strong designability, but the utility model is not limited thereto.

[0032] In the present invention, the piston windshield device 1000 needs to be installed with consideration of the spatial distance between the top of the train 300 and the tunnel 200. Figure 1 As shown, the return air baffle 100 is installed at the top of the tunnel 200 , that is, at a position close to the upper part of the tunnel 200 , and its height can be spatially defined as being higher than the horizontal center line I of the tunnel 200 .

[0033] In some embodiments of the present invention, the return air baffle 100 may further include a wind shielding portion 20, which may be disposed at at least one end of the return air portion 10 along the traveling direction A of the train. Figure 2 In the illustrated embodiment, two wind shields 20 are respectively disposed at the two ends of the return air portion 10. The provision of the wind shield 20 is conducive to gathering and guiding the piston wind FA.

[0034] In some embodiments of the present invention, the return air baffle 100 may further include a mounting portion 30, and the return air baffle 100 may be fixed to the top of the tunnel 200 through the mounting portion 30. The return air baffle 100 may be fixed to the top of the tunnel 200 by a method including but not limited to bolt fixing, such as Figure 3 , Figure 4 As shown, the return air baffle 100 can be detachably mounted on the top of the tunnel, for example, by means of a plurality of bolts 32 mounted on the mounting portion 30 .

[0035] Understandably, Figure 1 The top of the tunnel 200 schematically shown in FIG. 1 is, for example, a flat top. Figure 2 The mounting portion 30 of the return air baffle 100 schematically shown in the figure is also correspondingly, for example, a flat plate. However, it can be understood that the shape of the top of the tunnel 200 is not limited to being flat, and it can also be an arc-shaped top. When the shape of the top of the tunnel 200 changes, the shape of the mounting portion 30 of the return air baffle 100 can also be changed accordingly, and these are not intended to limit the present invention.

[0036] Continue to refer Figure 1 and Figure 2 In some embodiments of the present invention, preferably, the return air portion 10 extends downward in the tunnel 200 and is tilted toward the horizontal center line I of the tunnel 200, that is, tilted toward the train 300, which is conducive to guiding the return air FR to flow toward the train 300. In the present invention, the return air portion 10 is tilted at an acute angle relative to the horizontal plane, and the tilt angle range is preferably, for example, 30° to 60°. More preferably, as shown in FIG. Figure 2 The plane where the mounting portion 30 of the flat plate is located is, for example, inclined at an angle of 45°.

[0037] Figure 5 The schematic diagram of the segmentation of the subway operation line is shown. Taking the train running from the right platform S1 to the left platform S2 as an example (that is, the train's running direction A is from right to left), the train's running in the tunnel section 201 between the two platforms S1 and S2 can be divided into a train acceleration section 201a, a train uniform speed section 201b, and a train deceleration section 201c along the running direction A. In some embodiments of the utility model, the return air baffles 100 can be evenly arranged in the tunnel according to the on-site conditions. Preferably, for example, at least the train deceleration section 201c adjacent to the platform of the tunnel is arranged. In some other embodiments, when Figure 5 The running direction of the train A is from left to right (i.e. Figure 5 When the driving direction A is opposite to that shown in Figure 5 The train acceleration section 201a adjacent to the platform S1 on the right side of the middle becomes a "train deceleration section". That is, when the driving direction A is from left to right, the return air damper 100 is arranged in the train deceleration section adjacent to the platform S1 (i.e. corresponding to Figure 5 In other words, for a tunnel capable of bidirectional travel, the return air damper 100 of the present invention may be provided in each train deceleration section adjacent to the platform.

[0038] like Figure 6As shown, it shows the principle of using the piston wind windshield device of the utility model to achieve piston wind offset. The piston wind of the subway is caused by the high-speed flow of air in the tunnel driven by the train when it runs at high speed in the tunnel, which then causes the air in the tunnel to compress or expand. Taking the driving direction A from right to left as an example, the wind direction of the piston wind generated by the train when it is running is consistent with the travel direction A of the train. For example, when the piston wind F1 generated by the train when it is running encounters the return air baffle 100, part of the piston wind FA is diverted through the return air baffle 100 along the D1 direction (parallel to the extension direction of the return air baffle 100), generating a return wind FR along the D2 direction (opposite to the D1 direction). The return wind FR generates a force with the travel direction A of the train, which can at least partially offset the newly generated piston wind F2, for example, offset each other with the piston wind F21 along the D1 direction, thereby reducing the pressure of the piston wind generated when the train enters the station on the shield door and reducing safety risks. The utility model can make the piston wind in the tunnel flow back in the direction opposite to the traveling direction of the train by reasonably arranging the return air baffle, and interact with the newly generated piston wind to offset it, thereby reducing the pressure of the piston wind on the subway station shield door.

[0039] In some embodiments of the present invention, the return air may have a reverse force opposite to the traveling direction of the train, and the reverse force may act on the train and decelerate it. Figure 7 As shown in FIG. 1 , the return air FR after being guided by the return air baffle can be decomposed into two directions of force: the reverse force FR1 and the reverse force FR2. The reverse force FR1 and the train's travel direction A (combined with reference Figure 6 On the contrary, it can form a braking force on the train, which can automatically slow down the train and reduce braking consumption. The overall effect is as follows Figure 8 As shown, the wind force offset effect is achieved by using the return air function of the return air baffle 100 of the utility model. The utility model can form a decelerating force on the train through the return piston wind, and can generate a reverse thrust force on the train during the train deceleration stage, thereby achieving the effect of automatic deceleration.

[0040] In some embodiments of the present invention, Figure 1 , Figure 2As shown, the piston wind shield device 1000 of the utility model may also include a power generation system 40, which may include an impeller 41 disposed in the return air space 101 formed by the return air baffle 100, and a generator 42 connected to the impeller 41. The power generation system 40 can receive the piston wind through the impeller 41, and convert the wind energy of the piston wind into electrical energy through the generator 42. Preferably, the impeller 41 can be fixedly installed by an impeller fixing device 411. The impeller fixing device 411 can be, for example, a speed limiting safety mechanism. The generator 42 can be connected to the impeller 41 through a transmission device 421. The transmission device 421 can be, for example, a generator head, and the rotor of the generator head can be a permanent magnet, and the stator winding can generate electrical energy by cutting magnetic lines of force. The electrical energy generated by the power generation system 40 can be incorporated into the power grid system 400 (including but not limited to the lighting system) inside the subway station, thereby reducing the electricity cost of the subway station.

[0041] In some embodiments of the present invention, the power generation system 40 may further include an energy storage device (not shown) electrically connected to the generator 42, and the energy storage device can convert the electrical energy output by the generator into chemical energy. The electrical energy output by the generator 42, for example, may be alternating current, which may be rectified and then used to charge the energy storage device, thereby converting the electrical energy generated by the generator 42 into chemical energy.

[0042] In some embodiments of the present invention, the power generation system 40 may further include an inverter unit (not shown) electrically connected to the energy storage device, and the chemical energy of the energy storage device can be converted into AC 220V mains electricity through the inverter unit. The inverter unit may be, for example, an inverter power supply with a protection circuit, which can convert the chemical energy in the energy storage device into AC 220V mains electricity, thereby providing stable electric energy.

[0043] Fig. 9 This is a schematic diagram of the piston wind shield device with a power generation system of the utility model using piston wind to generate electricity. Fig. 9 As shown, the impeller 41 of the power generation system can be set at multiple return air baffles 100 in the tunnel. When the piston wind FA flows in, it drives the impeller 41 to rotate, generating a power generation effect, converting the wind energy of the piston wind into electrical energy, thereby realizing the recovery of surplus energy. The generated electrical energy can be used for functions including but not limited to subway station lighting, saving electricity consumption. By setting a power generation system at the return air baffle, the utility model can use the kinetic energy of the piston wind to drive the impeller to rotate, generate electrical energy, and save electricity costs.

[0044] The piston wind windshield device of the utility model fully considers the action characteristics of the piston wind, and offsets the continuous influence of the piston wind by guiding the direction and utilizing its own effect, thereby greatly improving the safety factor of the shield door and reducing the influence and damage of the piston wind on the subway station facilities.

[0045] The piston wind shield device of the utility model can also react to the train when it needs to decelerate through the piston wind formed during the train acceleration, thereby forming a reverse force and producing an automatic braking effect, thereby reducing the braking consumption of the train and facilitating the braking of the train.

[0046] The piston wind windshield device of the utility model can also be equipped with a power generation system to utilize the difficult-to-use piston wind, convert kinetic energy into electrical energy, realize surplus energy recovery, reduce electricity consumption in subway stations, and comply with the current development trend of energy conservation and carbon reduction.

[0047] The piston wind windshield device of the utility model can utilize the piston wind's own force to reduce the impact of the piston wind on the subway station shield door, while providing deceleration resistance for incoming trains and reducing braking consumption. The piston wind can also be used to generate electricity for subway station lighting, etc. It is an energy recycling system that is adapted to local conditions and has promotion value.

[0048] The exemplary embodiments of the present invention are specifically shown and described above. It should be understood that the present invention is not limited to the disclosed embodiments, but rather, the present invention is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. A piston windshield device, characterized in that: include: A return air baffle is installed on the top of the tunnel. The return air baffle has a return air portion, through which the piston wind generated by the train traveling in the tunnel can be diverted to generate return flow wind. The return flow wind can at least partially offset the new piston wind generated by the train during its movement, and can reduce the pressure of the piston wind generated by the train when entering the station on the platform's screen door.

2. The piston wind shield device according to claim 1, characterized in that: The air return portion extends downward in the tunnel and is inclined toward the horizontal center line of the tunnel.

3. The piston wind shield device according to claim 2, characterized in that: The return air portion is inclined at an angle of 45° relative to the horizontal plane.

4. The piston wind shield device according to claim 1, characterized in that: The return air baffle further comprises a wind shielding portion, which is arranged at at least one end of the return air portion along the traveling direction of the train.

5. The piston wind shield device according to claim 4, characterized in that: The two wind shielding parts are respectively arranged at two ends of the air return part along the traveling direction of the train.

6. The piston wind shield device according to claim 1, characterized in that: The return air damper is arranged at least in the train deceleration section of the tunnel adjacent to the platform.

7. The piston wind shield device according to claim 1, characterized in that: The return air has a reverse force opposite to the traveling direction of the train, and the reverse force can act on the train to decelerate the train.

8. The piston wind shield device according to claim 1, characterized in that: Also includes: The power generation system includes an impeller arranged in the return air space formed by the return air baffle, and a generator drivingly connected to the impeller. The power generation system can receive the piston wind through the impeller and convert the wind energy of the piston wind into electrical energy through the generator.

9. The piston wind shield device according to claim 8, characterized in that: The power generation system further comprises an energy storage device electrically connected to the generator, and the electrical energy output by the generator can be converted into chemical energy through the energy storage device.

10. The piston wind shield device according to claim 9, characterized in that: The power generation system further comprises an inverter unit electrically connected to the energy storage device, and the inverter unit can convert the chemical energy of the energy storage device into AC 220V mains electricity.

Images