Tunnel piston wind power generation early warning device and method

Abstract

The invention belongs to the technical field of tunnel operation, and particularly relates to a tunnel piston wind power generation early warning device and method. The tunnel piston wind power generation early warning device comprises a fixed frame; the power assembly is rotationally arranged on the fixed frame, and the power assembly is constructed to be capable of rotating after being pushed by piston air; the power generation assembly is arranged on the fixed frame, a power assembly is in transmission connection with the power generation assembly, and the power generation assembly is constructed to be capable of converting rotation mechanical energy of the power assembly into electric energy; the sensor is used for measuring the wind speed of the piston wind, and the sensor is electrically connected with the power generation assembly, so that the power generation assembly supplies power to the sensor.

Description

Technical Field

[0001] The present invention belongs to the technical field of tunnel operation, and in particular, relates to a tunnel piston wind power generation early warning device and a tunnel piston wind power generation early warning method. Background Art

[0002] When a train passes through a tunnel at high speed, the front of the train pushes against the air ahead, creating a positive pressure flow. The rear of the train forms a negative pressure zone, pulling the air behind the train. Combined with the restraining effect of the tunnel walls, this creates a strong air flow known as piston wind. This phenomenon is particularly pronounced in long and large tunnels and at high speeds. It is often accompanied by problems such as acoustic pollution, poor tunnel air quality, structural vibration of auxiliary facilities, and safety concerns for tunnel workers. Effectively utilizing the wind energy generated by piston wind and providing early warning of wind speeds within tunnels are key research areas in the field of high-speed railway tunnel aerodynamics.

[0003] In recent years, with the development of clean energy technologies, the utilization of renewable energy sources such as wind power has gradually attracted attention. Piston wind, as a wind source with high kinetic energy, has potential for power generation applications. Harnessing piston wind power generation not only improves energy efficiency but also reduces air pressure fluctuations within tunnels by strategically placing generators to guide airflow.

[0004] In view of this, the present invention aims to provide a new type of tunnel piston wind power generation early warning device and early warning method to solve the problems in the existing technology that the kinetic energy of high-speed railway piston wind is not effectively utilized and there is a lack of real-time monitoring and early warning means. Summary of the Invention

[0005] In response to the technical problems mentioned above, the present invention aims to propose a tunnel piston wind power generation early warning device, which can effectively utilize the kinetic energy of the piston wind.

[0006] The present invention also proposes a tunnel piston wind power generation early warning method, which can monitor the piston wind in real time.

[0007] According to the present invention, a tunnel piston wind power generation early warning device is provided, comprising:

[0008] Fixed frame;

[0009] A power assembly rotatably disposed on the fixed frame, the power assembly being configured to rotate after being pushed by piston wind;

[0010] a power generation assembly disposed on the fixed frame, the power assembly being in transmission connection with the power generation assembly, the power generation assembly being configured to convert rotational mechanical energy of the power assembly into electrical energy; and

[0011] A sensor for measuring the wind speed of the piston wind is electrically connected to the power generation component, so that the power generation component supplies power to the sensor.

[0012] In a specific embodiment, the fixing frame includes:

[0013] a base plate, wherein the power assembly is rotatably disposed on the base plate;

[0014] A rectifier sleeved on the outside of the power assembly, wherein the lower portion of the rectifier is fixedly connected to the bottom plate;

[0015] A top plate disposed on top of the fairing; and

[0016] A protective shell is arranged at the lower part of the bottom plate, and the power generation component is arranged in the protective shell.

[0017] In a specific embodiment, the power assembly includes a rotating shaft rotatably arranged on the base plate, and a plurality of blades are arranged on the rotating shaft along a circumferential array.

[0018] In a specific embodiment, the power generation assembly includes a generator fixedly arranged in the protective shell, a first gear is provided on the input shaft of the generator, the lower end of the rotating shaft extends to the lower side of the base plate and is connected to a second gear, and the first gear is engaged with the second gear.

[0019] In a specific embodiment, the output end of the generator is electrically connected to the sensor through a current regulating element.

[0020] In a specific embodiment, the output end of the generator is electrically connected to the energy storage device through a current regulating element.

[0021] In a specific embodiment, the current regulating element includes an AC / DC rectifier for rectification and a DC-DC converter for voltage regulation.

[0022] In a specific embodiment, the sensor obtains the wind speed of the piston wind by measuring the rotation speed of the power assembly.

[0023] In a specific embodiment, the fairing includes at least one fairing plate arranged outside the power assembly, and the fairing plate is constructed as a grid structure.

[0024] According to the present invention, a tunnel piston wind power generation early warning method is also provided. The tunnel piston wind power generation early warning device proposed according to the present invention is set in the tunnel. The piston wind is converted into electrical energy through the power component and the power generation component, and the sensor is powered. The wind speed of the piston wind is measured by the sensor. When the wind speed exceeds a preset value, a warning signal is issued.

[0025] Compared with the prior art, the advantages of this application are as follows.

[0026] The present invention electrically connects a sensor for measuring piston wind speed to a generator assembly, which, in response to the piston wind, powers the sensor. With this setup, when there's no piston wind in the tunnel, the sensor is powered off. When there is piston wind, the sensor is powered on and measures the wind speed. This allows for timely monitoring of piston wind and extends the sensor's service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be described below with reference to the accompanying drawings.

[0028] Figure 1 A schematic diagram showing an embodiment of a tunnel piston wind power generation early warning device according to the present invention;

[0029] Figure 2 It shows a schematic diagram of the appearance of the tunnel piston wind power generation early warning device according to the present invention;

[0030] Figure 3 A schematic diagram of a power assembly according to the present invention is shown.

[0031] The reference numerals in the figures are as follows:

[0032] 1. Fixed frame; 11. Bottom plate; 12. Rectifier; 121. Rectifier plate; 13. Top plate; 14. Protective shell;

[0033] 2. Power assembly; 21. Rotating shaft; 22. Blades;

[0034] 3. Power generation assembly; 31. Generator; 32. First gear; 33. Second gear;

[0035] 4. Sensor;

[0036] 100. Tunnel piston wind power generation early warning device.

[0037] In this application, all drawings are schematic drawings, which are only used to illustrate the principles of the present invention and are not drawn to scale. DETAILED DESCRIPTION

[0038] The present invention will be described below with reference to the accompanying drawings.

[0039] It should be noted that the directional terms and qualifiers "upper," "lower," "front," "rear," "left," and "right" used in this application are intended to refer to the accompanying drawings. They are not intended to limit the absolute positions of the components involved and may vary depending on the specific circumstances.

[0040] Figure 1 The structure of the tunnel piston wind power generation early warning device 100 according to the present invention is shown. Figure 1 As shown, the tunnel piston wind power generation early warning device 100 mainly includes a fixed frame 1, a power component 2, a power generation component 3 and a sensor 4.

[0041] Power assembly 2 is rotatably mounted within fixed frame 1 and is configured to rotate when propelled by piston wind. Power generation assembly 3 is mounted within fixed frame 1 and is in transmission connection with power assembly 2. When power assembly 2 rotates relative to fixed frame 1 in response to piston wind, it activates power generation assembly 3, which converts the rotational mechanical energy of power assembly 2 into electrical energy. Sensor 4 measures the wind speed of the piston wind and is electrically connected to power generation assembly 3, allowing power generation assembly 3 to supply power to sensor 4.

[0042] Under this setting, when the tunnel piston wind power generation warning device 100 is stationary, the sensor 4 is in a power-off state. When the power assembly 2 rotates under the action of the piston wind, the power generation assembly 3 converts the mechanical energy of the power assembly 2 into electrical energy and supplies power to the sensor 4. At this time, the sensor 4 starts to detect the wind speed of the piston wind. The electrical energy generated by the piston wind is used to supply the sensor 4 to measure the wind speed of the piston wind. On the one hand, the sensor 4 is in an intermittent working state, which can greatly extend the service life of the sensor 4 and reduce energy consumption. On the other hand, this method can ensure that when the piston wind exists, the sensor 4 is in a powered-on state, avoiding the situation where the piston wind is missed due to power failure of the sensor 4.

[0043] In this embodiment, the fixing frame 1 includes a bottom plate 11 , a fairing 12 , a top plate 13 and a protective shell 14 .

[0044] like Figure 2 As shown, the bottom plate 11, the fairing 12, and the top plate 13 are interconnected to form a rectangular cavity structure. That is, the bottom plate 11 and the top plate 13 respectively constitute the bottom and top of the rectangular cavity structure. The fairing 12 connects the bottom plate 11 and the top plate 13 and encloses the space between the bottom plate 11 and the top plate 13. The protective shell 14 is provided at the lower portion of the bottom plate 11.

[0045] It should be noted that although the fixed frame 1 in this embodiment is constructed as a rectangular cavity structure, this is not used to show the scope of protection of the present invention. Any shape that can accommodate the power component 2 should be within the scope of protection of the present invention, such as a polygonal three-dimensional cavity structure, a cylindrical cavity structure, etc.

[0046] In a specific embodiment, the rectifying member 12 includes at least one rectifying plate 121, which can allow the piston wind to pass through and rectify the piston wind. That is, after the piston wind is rectified by the rectifying plate 121, it flows through the power assembly 2 and provides power to the power assembly 2. The rectified piston wind can provide power to the power assembly 2 more efficiently. Figure 2 As shown, the rectifying plate 121 is constructed as a mesh structure.

[0047] When the tunnel piston wind power generation early warning device 100 is installed on the tunnel floor, the protective shell 14 is fixed to the tunnel floor, and the four surfaces of the rectifier 12 can be configured as rectifier plates 121. When the tunnel piston wind power generation early warning device 100 is installed on the tunnel wall, one of the rectifier plates 121 can be replaced with a solid panel (mounting plate) and anchored to the tunnel wall through the solid panel.

[0048] like Figure 1 As shown, the power assembly 2 is arranged in a rectangular parallelepiped cavity formed by a bottom plate 11, a fairing 12 and a top plate 13. Specifically, as Figure 3 As shown, the power assembly 2 includes a rotating shaft 21 and blades 22. The rotating shaft 21 is rotatably mounted on the bottom plate 11 and the top plate 13. A plurality of blades 22 are arranged in a circumferential array on the rotating shaft 21. When piston wind flows through the blades 22, it pushes the blades 22, thereby driving the rotating shaft 21 to rotate relative to the bottom plate 11.

[0049] In a specific embodiment, the blades 22 are made of a lightweight and high-strength composite material, and the inclination angle of each blade 22 is aerodynamically optimized to maximize the capture of piston wind energy.

[0050] The power generation assembly 3 is disposed in the protective shell 14 and is in transmission connection with the rotating shaft 21. When the rotating shaft 21 rotates relative to the base plate 11, it can transmit power to the power generation assembly 3, and the power generation assembly 3 can convert the mechanical energy of the rotating shaft 21 into electrical energy.

[0051] Specifically, the power generation assembly 3 includes a generator 31 fixedly mounted within the protective housing 14. A first gear 32 is mounted on the input shaft of the generator 31. The lower end of the rotating shaft 21 extends to the underside of the base plate 11 and is connected to a second gear 33. The first gear 32 meshes with the second gear 33. This arrangement achieves a transmission connection between the power generation assembly 3 and the rotating shaft 21.

[0052] Furthermore, the first gear 32 and the second gear 33 are bevel gears, and the central axis of the generator 31 is perpendicular to the central axis of the rotating shaft 21. Multiple generators 31 can be arranged in an array along the circumferential direction within the protective shell 14, and different generators 31 can be connected to different electrical devices.

[0053] According to the present invention, the output end of the generator 31 is electrically connected to the sensor 4 through the current regulating element, thereby supplying power to the sensor 4. Figure 1 As shown, the sensor 4 is arranged on the base plate 11 and can measure the rotational speed of the rotating shaft 21. Since the rotational speed of the rotating shaft 21 is related to the wind speed of the piston wind, the wind speed of the piston wind can be obtained according to the rotational speed of the rotating shaft 21. The calculation method of obtaining the wind speed of the piston wind according to the rotational speed of the rotating shaft 21 is well known to those skilled in the art and will not be repeated here.

[0054] In one embodiment, the output of generator 31 can also be electrically connected to an energy storage device (not shown) via a current regulating element, thereby storing excess electrical energy in the energy storage device. Specifically, the energy storage device can be a battery. The battery can be connected to a power control cabinet (the power control cabinet is located within the tunnel chamber and is a permanent device in the railway tunnel, providing power to ancillary facilities within the tunnel).

[0055] In one embodiment, the output end of the generator 31 can also be electrically connected to other electrical devices through a current regulating element, thereby providing power to the other electrical devices.

[0056] In one specific embodiment, the current regulating element includes an AC / DC rectifier for rectification and a DC-DC converter for voltage regulation. The AC power generated by the generator 31 is converted to DC power via the AC / DC rectifier. The rectified DC power then passes through a bidirectional DC-DC converter to regulate the DC voltage.

[0057] In a preferred embodiment, the generator 31 is a low starting speed model to adapt to the fluctuation of piston wind.

[0058] The tunnel piston wind power generation warning device 100 can be deployed in the tunnel chamber, around tunnel lighting, or within the tunnel's auxiliary tunnels. When located within the auxiliary tunnel, the number of generators 31 or the size of the device can be appropriately increased, as wind speeds are generally higher there.

[0059] According to the invention, a tunnel piston wind power generation early warning method is also provided. The tunnel piston wind power generation early warning device 100 provided by the present invention is set in the tunnel. The piston wind is converted into electrical energy through the power component 2 and the power generation component 3, and the sensor 4 is powered. The wind speed of the piston wind is measured by the sensor 4. When the wind speed exceeds the preset value, a warning signal is issued.

[0060] Furthermore, the wind speed time-course data collected by sensor 4 is transmitted to a host computer (not shown) via an IMC (data acquisition system). This monitors the real-time piston wind speed in the tunnel. When the wind speed exceeds a preset value, the host computer issues an early warning signal. Remedial measures can then be taken based on actual needs, such as closing the auxiliary tunnel or remotely contacting the train driver to slow the train.

[0061] In a specific embodiment, the preset value is set according to the allowable value specified in the Railway Tunnel Design Code (TB 10003-2016), for example, the preset value is set to 8 m / s.

[0062] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0063] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0064] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0065] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A tunnel piston wind power generation early warning device, characterized in that: include: Fixed frame (1); A power assembly (2) rotatably arranged on the fixed frame (1), the power assembly (2) being configured to rotate after being pushed by piston wind; A power generation assembly (3) is arranged on the fixed frame (1), the power assembly (2) is in transmission connection with the power generation assembly (3), and the power generation assembly (3) is configured to convert the rotational mechanical energy of the power assembly (2) into electrical energy; and A sensor (4) for measuring the wind speed of the piston wind, wherein the sensor (4) is electrically connected to the power generation component (3), so that the power generation component (3) supplies power to the sensor (4).

2. The tunnel piston wind power generation early warning device according to claim 1 is characterized in that: The fixed frame (1) comprises: a bottom plate (11), the power assembly (2) being rotatably arranged on the bottom plate (11); a flow-rectifying member (12) sleeved on the outside of the power assembly (2), wherein the lower portion of the flow-rectifying member (12) is fixedly connected to the bottom plate (11); a top plate (13) disposed on top of the fairing (12); and A protective shell (14) is provided at the lower portion of the base plate (11), and the power generation component (3) is provided in the protective shell (14).

3. The tunnel piston wind power generation early warning device according to claim 2 is characterized in that: The power assembly (2) comprises a rotating shaft (21) rotatably arranged on the base plate (11), and a plurality of blades (22) are arranged on the rotating shaft (21) in a circumferential array.

4. The tunnel piston wind power generation early warning device according to claim 3 is characterized in that: The power generation assembly (3) includes a generator (31) fixedly arranged in the protective shell (14); a first gear (32) is provided on the input shaft of the generator (31); the lower end of the rotating shaft (21) extends to the lower side of the bottom plate (11) and is connected to a second gear (33); the first gear (32) is meshed with the second gear (33).

5. The tunnel piston wind power generation early warning device according to claim 4 is characterized in that: The output end of the generator (31) is electrically connected to the sensor (4) via a current regulating element.

6. The tunnel piston wind power generation early warning device according to claim 4, characterized in that: The output end of the generator (31) is electrically connected to the energy storage device through a current regulating element.

7. The tunnel piston wind power generation early warning device according to claim 5 or 6, characterized in that: The current regulating element includes an AC / DC rectifier for rectification and a DC-DC converter for voltage regulation.

8. The tunnel piston wind power generation early warning device according to any one of claims 1 to 6, characterized in that: The sensor (4) obtains the wind speed of the piston wind by measuring the rotation speed of the power component (2).

9. The tunnel piston wind power generation early warning device according to any one of claims 2 to 6, characterized in that: The fairing (12) comprises at least one fairing plate (121) arranged outside the power assembly (2), and the fairing plate (121) is constructed as a grid structure.

10. A tunnel piston wind power generation early warning method, characterized in that: A tunnel piston wind power generation warning device according to any one of claims 1 to 9 is set in the tunnel, and the piston wind is converted into electrical energy through the power component and the power generation component, and the sensor is powered. The wind speed of the piston wind is measured by the sensor, and when the wind speed exceeds a preset value, a warning signal is issued.

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