Intelligent monitoring device for vibration of self-powered power transmission line

Abstract

The invention provides an intelligent monitoring device for vibration of a self-powered power transmission line. The intelligent monitoring device comprises an end cover, a barrel, a wire clamp, a supporting beam, a piezoelectric energy capture module, a friction energy capture module, an energy capture conversion module and a signal transmitting module, the piezoelectric energy capture module comprises a cantilever beam and a piezoelectric plate, the piezoelectric energy capture module is fixed on the periphery of the cylinder body, and the friction energy capture module is located at the tail end of the cantilever beam; the friction energy capture module comprises response plates, a fixing plate and a friction power generation film, the response plates and the fixing plate are located at the tail end of the cantilever beam, and the response plates are correspondingly arranged with the fixing plate as the symmetry axis. According to the device, a piezoelectric energy capture mode and a friction energy capture mode are combined, the kinetic energy of the power transmission line is fully utilized, and the energy capture efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of energy capture, and in particular to a self-powered transmission line vibration intelligent monitoring device. Background Art

[0002] In recent years, with the rapid development of power grid construction and the gradual expansion of scale, intelligent transmission line status monitoring has become increasingly important. As the primary and key components in the automatic control system, sensors can collect various information such as environmental temperature and humidity, gas concentration, vibration, acceleration, current and voltage, and send the information to other monitoring devices. It is a reliable way to detect the operating status of transmission lines. Existing sensors generally require continuous power supply from external power supplies. Traditional chemical batteries are large in size and have a limited service life. They are difficult to repair and replace after being damaged in the working environment. After being abandoned, they will cause irreversible pollution to the environment and endanger human health. Therefore, it has become a challenge to find a way to provide continuous power supply for sensors and ensure their uninterrupted operation. Researchers have proposed using environmental energy as an alternative energy source for sensor nodes to achieve sustainable power supply by obtaining energy from the surrounding environment. Vibration energy is ubiquitous in the environment and easy to obtain. It can be converted into electrical energy through piezoelectric cantilever beams and friction structures, which can provide reliable power for smart grid wireless sensor nodes. Based on this, we propose a self-powered transmission line vibration intelligent monitoring device. Its main principle is to obtain energy from the environment, convert this energy into electrical energy, power the signal transmission module, and realize intelligent monitoring of power grid transmission lines. The self-powered transmission line vibration intelligent monitoring device has a broad application prospect in the field of transmission line monitoring Summary of the invention

[0003] The purpose of the present invention is to address the deficiencies of the prior art and thereby provide a composite energy capture method that fully utilizes the vibration energy in the environment to realize a continuous self-powered intelligent monitoring device for transmission lines.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a self-powered transmission line vibration intelligent monitoring device, including an end cover, a cylinder, a wire clamp, a support beam, a piezoelectric energy capture module, a friction energy capture module, an energy capture conversion module and a signal transmission module;

[0005] The end cover is fixed to the cylinder by a bolt structure, the wire clamp and the support beam are fixed to the cylinder, the support beam has a cylindrical structure in the middle, four square columns are evenly distributed around the cylinder, the inner wall surface of the cylinder has a base for fixing the cantilever beam, the connecting surfaces on both sides of the cylinder have protruding mounting interfaces, and the connecting surface of the end cover has protruding mounting interfaces;

[0006] The piezoelectric energy capture module includes a friction energy capture module, a cantilever beam, and a piezoelectric sheet. The friction energy capture module is located at the end of the cantilever beam. The fixed end of the cantilever beam is fixed to the base of the cylinder using a bolt structure. The piezoelectric sheet is installed on one side or both sides of the cantilever beam. During the vibration of the cylinder, the base on the cylinder drives the cantilever beam to swing, and the piezoelectric sheet is connected to the energy capture conversion module.

[0007] The friction energy capture module includes a response plate, a fixed plate, and a friction power generation film. The response plate and the fixed plate are located at the ends of the cantilever beam. The response plate is arranged correspondingly with the fixed plate as the symmetry axis. The friction power generation films are fixed in pairs on the opposite surfaces of the response plate and the fixed plate respectively. The swing of the cantilever beam drives the response plate to perform a flapping action. The friction power generation film is connected to the energy capture conversion module through a wire.

[0008] The energy capture conversion module converts the alternating current generated by the piezoelectric energy capture module and the friction energy capture module into direct current through a rectifier circuit to supply power to the signal transmission module.

[0009] Based on the above, the end cover is connected to the two side surfaces of the cylinder through a bolt structure, and the support beam, piezoelectric energy capture module, friction energy capture module and energy capture conversion module are sealed in the cylinder.

[0010] Based on the above, the wire clamp and the support beam are fixed on the cylinder, the middle of the support beam is a circular ring structure, and four square columns are distributed on the circumference of the circular ring to strengthen the rigidity of the cylinder structure.

[0011] As mentioned above, there are 4 bases on the inner wall surface of the cylinder for fixing the cantilever beam, wherein a groove matching the width of the cantilever beam is chiseled in the middle of the base for limiting the position, screw holes are drilled on the upper and lower surfaces, and the angle between the central axis of the base and the axis of the square column of the supporting beam is 45°, and 4 mounting interfaces are protruding from the connecting surfaces on both sides of the cylinder.

[0012] Based on the above, the cylinder vibrates when the transmission line swings with the wind, and the cantilever beam is driven to swing through the base in the cylinder.

[0013] Based on the above, the response plate and the fixed plate of the friction energy capture module are located at the end of the cantilever beam. The vibration of the cantilever beam drives the response plate to perform a flapping action. The friction power generation film is connected to the energy capture conversion module through a wire, and the energy capture conversion module provides electrical energy for the signal transmission module.

[0014] Based on the above, the cantilever beam array in the piezoelectric energy capture module is distributed to capture vibration energy in all directions.

[0015] Based on the above, the cantilever beam is connected to the base in the cylinder through a bolt structure.

[0016] Compared with the prior art, the present invention has outstanding substantive features and significant progress. Specifically, the present invention utilizes the wind-induced vibration energy of the transmission line and designs a device that combines piezoelectric sheet power generation and friction power generation in a composite power generation mode, which can fully utilize the vibration kinetic energy of the transmission line and realize the function of continuously supplying power to the signal transmission module through energy collection. Because the vibration of the transmission line is ubiquitous, the invention can be applied in a wide range of scenarios and has good promotion and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the schematic diagrams of the structural principle of the self-powered transmission line vibration intelligent monitoring device in Example 1 of the present invention.

[0018] Figure 2 This is the second schematic diagram of the structural principle of the self-powered transmission line vibration intelligent monitoring device in Example 1 of the present invention.

[0019] Figure 3 It is a schematic diagram of the internal structure of the self-powered transmission line vibration intelligent monitoring device in Example 1 of the present invention.

[0020] Figure 4 It is a schematic diagram of the piezoelectric energy capture module and the friction energy capture module in the present invention.

[0021] Figure 5 It is a structural schematic diagram of the end cover in the present invention.

[0022] In the figure: 1. End cover; 2. Cylinder; 3. Wire clamp; 4. Support beam; 5. Cantilever beam; 6. Response plate; 7. Fixing plate; 8. Bolt structure; 9. Piezoelectric sheet; 10. Power generation film; 11. Installation interface; DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described in detail below through specific implementation methods.

[0024] A self-powered transmission line vibration intelligent monitoring device comprises an end cover, a cylinder, a wire clamp, a support beam, a piezoelectric energy capture module, a friction energy capture module, an energy capture conversion module and a signal transmission module.

[0025] The energy capture conversion module is used to collect, convert and manage the collected energy, and the signal transmission module is used to transmit the monitored transmission line vibration signal to a ground receiver.

[0026] Example 1

[0027] like Figure 1-Figure 5As shown, the end cover 1 is fixed to the cylinder 2 by a bolt structure 8, the wire clamp 3 and the support beam 4 are fixed to the cylinder 2, the support beam 4 is a cylindrical structure in the middle, and four square columns are evenly distributed around the cylinder. The inner wall surface of the cylinder 2 has a base for fixing the cantilever beam 5, and the connecting surfaces on both sides of the cylinder 2 protrude the mounting interface 11, and the connecting surface of the end cover 1 protrudes the mounting interface 11;

[0028] The piezoelectric energy capture module includes a friction energy capture module, a cantilever beam 5, and a piezoelectric sheet 9. The friction energy capture module is located at the end of the cantilever beam. The fixed end of the cantilever beam is fixed to the base of the cylinder 2 using a bolt structure 8. The piezoelectric sheet 9 is installed on one side or both sides of the cantilever beam 5. The cylinder 2 is connected to the power transmission line through the wire clamp 3. When the power transmission line vibrates, the cylinder 2 is driven to vibrate. The base on the cylinder 2 drives the cantilever beam 5 to swing. The piezoelectric sheet 9 is connected to the energy capture conversion module.

[0029] The friction energy capture module includes a response plate 6, a fixed plate 7, and a friction power generation film 10. The response plate 6 and the fixed plate 7 are located at the ends of the cantilever beam 5. The response plate 6 is arranged correspondingly with the fixed plate 7 as the symmetry axis. The friction power generation films 10 are fixed in pairs on the opposite surfaces of the response plate 6 and the fixed plate 7, respectively. The swing of the cantilever beam 5 drives the response plate 6 to perform a flapping action. The friction power generation film 10 is connected to the energy capture conversion module through a wire.

[0030] The self-powered transmission line vibration intelligent monitoring device is installed on the transmission line through a wire clamp 3. When the transmission line is vibrated by natural wind disturbance, the cylinder 2 of the self-powered transmission line vibration intelligent monitoring device on it is driven to vibrate. The cylinder 2 drives the cantilever beam 5 to vibrate through the base thereon. The vibration of the cantilever beam 5 causes the piezoelectric sheet 9 on its surface to deform and generate voltage, which is connected to the energy capture conversion module through a wire. At the same time, the vibration of the cantilever beam 5 drives the response plate 6 at its end to flap on both sides of the fixed plate 7, and the power generation film 10 on the opposite surface generates voltage through friction, which is connected to the energy capture conversion module through a wire. The energy conversion module provides electrical energy to the signal transmission module.

[0031] Example 2

[0032] In this embodiment, the cantilever beam is fixed on the inner base groove of the cylinder at equal angles along the circumferential direction, and the end of the cantilever beam is a swing end. In a natural environment, no matter in which direction the wind acts on the self-powered transmission line vibration intelligent monitoring device, it can efficiently capture energy through its multi-angle adaptive design, thereby ensuring that under complex and changeable natural conditions, a continuous power support is provided for the operation of the intelligent monitoring system.

[0033] Example 3

[0034] In this embodiment, the self-powered transmission line vibration intelligent monitoring device can be installed on the inclined cable of the bridge. When wind flows over the surface of the inclined cable and forms alternating vortices on both sides to cause the inclined cable to vibrate, the piezoelectric energy capture module and the friction energy capture module convert the vibration kinetic energy into electrical energy through the energy conversion module to power the signal transmission module. No external power supply is required, thereby realizing real-time monitoring of key parameters such as vibration, stress, and temperature of the bridge inclined cable, ensuring the safety of the bridge structure and extending the service life of the bridge.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A self-powered transmission line vibration intelligent monitoring device, characterized in that: It includes an end cover, a cylinder, a wire clamp, a support beam, a piezoelectric energy capture module, a friction energy capture module, an energy capture conversion module and a signal transmission module; The end cover is fixed to the cylinder by a bolt structure, the wire clamp and the support beam are fixed to the cylinder, the support beam has a cylindrical structure in the middle, four square columns are evenly distributed around the cylinder, the inner wall surface of the cylinder has a base for fixing the cantilever beam, the connecting surfaces on both sides of the cylinder have protruding mounting interfaces, and the connecting surface of the end cover has protruding mounting interfaces; The piezoelectric energy capture module includes a cantilever beam and a piezoelectric sheet. The fixed end of the cantilever beam is fixed to the base of the cylinder using a bolt structure. The piezoelectric sheet is installed on one side or both sides of the cantilever beam. During the vibration of the cylinder, the base on the cylinder drives the cantilever beam to swing. The piezoelectric sheet is connected to the energy capture conversion module. The friction energy capture module includes a response plate, a fixed plate, and a friction power generation film. The response plate and the fixed plate are located at the ends of the cantilever beam. The response plate is arranged correspondingly with the fixed plate as the symmetry axis. The friction power generation films are fixed in pairs on the opposite surfaces of the response plate and the fixed plate respectively. The swing of the cantilever beam drives the response plate to perform a flapping action. The friction power generation film is connected to the energy capture conversion module through a wire. The energy capture conversion module converts the alternating current generated by the piezoelectric energy capture module and the friction energy capture module into direct current through a rectifier circuit to supply power to the signal transmission module.

2. The self-powered transmission line vibration intelligent monitoring device according to claim 1, characterized in that: The end cover is connected to the two side surfaces of the cylinder through a bolt structure, and the support beam, the piezoelectric energy capture module, the friction energy capture module and the energy capture conversion module are sealed in the cylinder.

3. The self-powered transmission line vibration intelligent monitoring device according to claim 1, characterized in that: The wire clamp and the support beam are fixed on the cylinder. The middle of the support beam is a circular ring structure, and four square columns are distributed on the circumference of the circular ring to strengthen the rigidity of the cylinder structure.

4. The self-powered transmission line vibration intelligent monitoring device according to claim 1, characterized in that: There are four bases on the inner wall surface of the cylinder for fixing the cantilever beam. A groove matching the width of the cantilever beam is chiseled in the middle of the base for limiting the position. Screw holes are drilled on the upper and lower surfaces. The angle between the central axis of the base and the axis of the square column of the supporting beam is 45°. Four mounting interfaces are protruding from the connecting surfaces on both sides of the cylinder.

5. The self-powered transmission line vibration intelligent monitoring device according to claim 1, characterized in that: The cylinder body vibrates when the transmission line swings with the wind, and the cantilever beam is driven to swing through the base in the cylinder body.

6. The self-powered transmission line vibration intelligent monitoring device according to claim 1, characterized in that: The cantilever beam array in the piezoelectric energy capture module is distributed to capture vibration energy in all directions.

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