Miniature temperature difference energy acquisition device for power transmission line

Abstract

The embodiment of the invention discloses a miniature temperature difference energy acquisition device for a power transmission line. The miniature temperature difference energy acquisition device comprises a synchronous centripetal structure and a miniature temperature difference power generation unit group, the synchronous centripetal structure comprises a self-adaptive adjusting clamping assembly and a sliding connection assembly, and the synchronous centripetal structure is used for being attached to the power transmission line through the linkage effect between the clamping assembly and the sliding connection assembly; the miniature thermoelectric power generation unit group comprises a plurality of miniature thermoelectric power generation units which are circumferentially arranged on the power transmission line in a surrounding manner, are fixed on the surface of the power transmission line through a synchronous centripetal structure, and are used for converting the temperature difference between the power transmission line and the environment into electric energy so as to supply power to a sensor on the power transmission line; and abnormal temperature change of the power transmission line is monitored based on the temperature difference change. According to the invention, power can be stably supplied to the sensor, real-time temperature monitoring and abnormal temperature change early warning of the power transmission line are realized, and the safety, reliability and monitoring management efficiency of the power transmission line are effectively improved.

Description

Technical Field

[0001] This application relates to the technical field of power systems, and particularly to a micro thermoelectric energy harvesting device for transmission lines. Background Art

[0002] At present, with the booming development of the power Internet of Things, a large number of sensing and monitoring nodes are widely distributed in all links of the power system. They shoulder the important task of real-time monitoring of the operating status of power equipment and surrounding environmental parameters to ensure the safe and stable operation of the equipment. In the engineering environment of the power transmission system, there are various available energy sources such as thermal energy, electromagnetic energy, vibration energy, and wind energy. As a key carrier of power transmission, the monitoring of the operating status of high-voltage transmission lines is of great importance.

[0003] However, traditional power supply methods have gradually become difficult to meet the power supply requirements of sensing nodes in the power system, especially in the face of the explosive growth of wireless sensing nodes. The power supply problem has become a key bottleneck restricting the construction of the power system sensing network. In the complex outdoor environment, there are a large number of sensing nodes distributed along the transmission lines, and the power supply stability of these nodes is difficult to guarantee. Once the power supply is interrupted, it will directly affect the monitoring effect of the transmission lines, and further threaten the safe and stable operation of the entire power system. In addition, during the operation of the transmission lines, temperature changes will occur due to various factors. For example, abnormal temperature changes will occur in the transmission lines due to abnormal conditions such as loose compression joints. If not monitored and warned in time, serious power failures may be caused, bringing huge losses to the power system.

[0004] The foregoing description is for the purpose of providing general background information and does not necessarily constitute prior art.

[0005] Application Content

[0006] The embodiments of this application provide a micro thermoelectric energy harvesting device for transmission lines, which can stably supply power to sensors, realize real-time monitoring of the temperature of transmission lines and early warning of abnormal temperature changes, and effectively improve the safety, reliability and monitoring management efficiency of transmission lines.

[0007] The embodiments of this application provide a micro thermoelectric energy harvesting device for transmission lines, including a synchronous centripetal structure and a micro thermoelectric power generation unit group;

[0008] The synchronous centripetal structure includes a clamping component with adaptive adjustment and a sliding connection component. The synchronous centripetal structure is used to achieve fitting with the transmission line through the linkage between the clamping component and the sliding connection component;

[0009] The micro thermoelectric power generation unit group includes a plurality of micro thermoelectric power generation units circumferentially arranged around the power transmission line and is fixed on the surface of the power transmission line through the synchronous centripetal structure, which is used to convert the temperature difference between the power transmission line and the environment into electric energy to supply power to the sensors on the power transmission line and monitor the abnormal temperature change of the power transmission line based on the temperature difference change.

[0010] Optionally, in some embodiments of the present application, the clamping assembly includes two symmetrically arranged support bottom plates and multiple groups of sliding blocks; wherein, the support bottom plates are respectively arranged on both sides of the power transmission line; the sliding blocks are circumferentially distributed in the sliding grooves of the support bottom plates and slide radially along the sliding grooves.

[0011] The sliding connection assembly includes a plurality of L-shaped support frames. The two ends of the support frame are respectively connected to adjacent sliding blocks and are matched with the grooves of the support bottom plate through convex columns, so that the sliding blocks move synchronously in the sliding grooves to adjust the clamping force.

[0012] Optionally, in some embodiments of the present application, the sliding blocks are divided into two groups, with six sliding blocks evenly distributed circumferentially in each group. Each sliding block is matched with the sliding groove through a guiding and limiting structure to limit the sliding direction of the sliding block to be radial.

[0013] Optionally, in some embodiments of the present application, the number of the L-shaped support frames is six groups. The two ends of each group of L-shaped support frames are inserted into the through holes of adjacent sliding blocks to form a linkage structure, so that the radial movement of the sliding blocks is synchronously transmitted to all the L-shaped support frames.

[0014] Optionally, in some embodiments of the present application, the micro thermoelectric power generation unit group includes a plurality of thermoelectric power generation chips and a heat sink. The inner surface of the heat sink is in contact with the power transmission line, and the outer surface of the heat sink is fixedly connected to the thermoelectric power generation chips, and the heat sink is an arc-shaped structure to match the outer surface curvature of the power transmission line.

[0015] Optionally, in some embodiments of the present application, the arc central angle of the heat sink is 60°, and the micro thermoelectric power generation unit group includes six micro thermoelectric power generation units evenly distributed circumferentially covering the power transmission line.

[0016] Optionally, in some embodiments of the present application, the thermoelectric power generation chips and the heat sink are bonded through a high thermal conductivity adhesive layer, and the heat sink is made of a metal matrix composite material.

[0017] Optionally, in some embodiments of the present application, when the synchronous centripetal mechanism is in a closed state, the radial displacement of the sliding blocks is adjusted through the linkage of the L-shaped support frames, so that the contact pressure between the micro thermoelectric power generation units and the surface of the power transmission line is evenly distributed.

[0018] Optionally, in some embodiments of the present application, the device further includes a temperature sensor, which is integrated on the support base plate of the synchronous centripetal mechanism and powered by the micro thermoelectric power generation unit, and is used to collect the surface temperature data of the transmission line in real time.

[0019] Optionally, in some embodiments of the present application, the micro thermoenergy collection device generates an abnormal temperature change warning signal by analyzing the correlation between the thermoenergy collection data and the breeze vibration of the wire, and transmits it to the remote monitoring terminal.

[0020] The embodiment of the present application provides a micro thermoenergy collection device for a transmission line, including a synchronous centripetal structure and a group of micro thermoelectric power generation units; wherein, the synchronous centripetal structure includes a clamping component with adaptive adjustment and a sliding connection component, and the synchronous centripetal structure is used to realize the fitting with the transmission line through the linkage between the clamping component and the sliding connection component; the group of micro thermoelectric power generation units includes a plurality of micro thermoelectric power generation units circumferentially arranged around the transmission line, and is fixed on the surface of the transmission line through the synchronous centripetal structure, and is used to convert the temperature difference between the transmission line and the environment into electric energy to supply power to the sensors on the transmission line, and monitor the abnormal temperature change of the transmission line based on the temperature difference change. The micro thermoenergy collection device for a transmission line provided by the present application uses the synchronous centripetal mechanism to dynamically fit the complex surface of the transmission line, ensures the close contact between the group of micro thermoelectric power generation units and the line, efficiently captures the temperature difference energy between the line and the environment, and converts it into electric energy, providing continuous and stable self-power supply for the sensors on the transmission line, and solving the bottleneck problem that the traditional power supply method is difficult to continuously supply power in the outdoor complex environment; by the group of thermoelectric power generation units, the temperature change characteristics of the transmission line are sensed in real time, and early warning of abnormal temperature change is realized, so as to improve the safety and operation and maintenance efficiency of the transmission line, and avoid the failure risk caused by local overheating or loosening. It can be seen that the present application can stably supply power to the sensors, realize the real-time monitoring of the temperature of the transmission line and the early warning of abnormal temperature change, and can effectively improve the safety, reliability and monitoring management efficiency of the transmission line. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of the micro thermoenergy collection device for a transmission line provided by the embodiment of the present application;

[0023] Figure 2It is a schematic diagram of the open state of the synchronous centripetal structure provided by an embodiment of the present application;

[0024] Figure 3 It is a schematic diagram of the closed state of the synchronous centripetal structure provided by an embodiment of the present application.

[0025] Illustration: 1 - Synchronous centripetal structure; 1a - Support base plate; 1b - Sliding block; 1c - L-shaped support frame; 2 - Micro thermoelectric power generation unit group. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application. Without conflict, the following various embodiments and their technical features can be combined with each other.

[0027] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including one..." does not exclude the existence of other identical elements in the process, method, article or device including the element. In addition, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanations in the specific embodiments or further in combination with the context in the specific embodiments.

[0028] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] In subsequent descriptions, the use of suffixes such as "module", "component" or "unit" to represent elements is only for the convenience of description of the present application, and it has no specific meaning in itself. Therefore, "module", "component" or "unit" can be used interchangeably.

[0030] The following will be described in detail respectively. It should be noted that the description order of the following embodiments does not limit the priority order of the embodiments.

[0031] Please refer to Figure 1 , Figure 1The figure is a schematic structural diagram of a micro thermoelectric energy harvesting device for a transmission line provided by an embodiment of the present application. The micro thermoelectric energy harvesting device for a transmission line includes a box body. Among them, as Figure 1 shown, the device may specifically include a synchronous centripetal structure 1 and a micro thermoelectric power generation unit group 2; among them,

[0032] The synchronous centripetal structure 1 includes an adaptively adjustable clamping component and a sliding connection component. The synchronous centripetal structure 1 is used to achieve fitting with the transmission line through the linkage between the clamping component and the sliding connection component;

[0033] Specifically, the synchronous centripetal structure 1 in this embodiment is composed of an adaptively adjustable clamping component and a sliding connection component. Among them, the clamping component is composed of two mirror-symmetrical support bottom plates 1a and multiple groups of sliding blocks 1b. The support bottom plates 1a are respectively located on both sides of the transmission line, and the sliding blocks 1b are circumferentially distributed in the chutes of the support bottom plates 1a and can slide radially along the chutes. Its function is to provide support for the entire device and achieve clamping of the transmission line through the sliding of the sliding blocks 1b, ensuring that the device can be closely attached to the transmission line. The sliding connection component is composed of multiple L-shaped support frames 1c. The two ends of the support frames are respectively connected to adjacent sliding blocks 1b and are matched with the grooves of the support bottom plates 1a through convex columns. Its function is to link the movement of the sliding blocks 1b, so that the sliding blocks 1b move synchronously in the chutes, thereby realizing the adjustment of the clamping force on the transmission line and ensuring the stability and tightness of the device on the transmission line. In addition, the support bottom plates 1a and the sliding blocks 1b can be made of high-strength and lightweight materials, such as aluminum alloy or composite materials, to improve the durability and portability of the device.

[0034] The micro thermoelectric power generation unit group 2 includes multiple micro thermoelectric power generation units circumferentially arranged around the transmission line and is fixed on the surface of the transmission line through the synchronous centripetal structure 1, and is used to convert the temperature difference between the transmission line and the environment into electrical energy to supply power to the sensors on the transmission line and monitor the abnormal temperature change of the transmission line based on the temperature difference change;

[0035] Specifically, the micro-thermoelectric power generation unit group 2 in this embodiment includes multiple micro-thermoelectric power generation units. These micro-thermoelectric power generation units are circumferentially arranged around the transmission line and fixed on the surface of the transmission line through the synchronous centripetal structure 1. Each micro-thermoelectric power generation unit consists of a thermoelectric generator and a heat spreader. The inner surface of the heat spreader is in contact with the transmission line for collecting the heat of the transmission line, and its outer surface is fixedly connected to the thermoelectric generator. The thermoelectric generator generates electric energy by using the temperature difference between the transmission line and the environment to power the sensors on the transmission line. The heat spreader is designed with an arc structure to match the outer surface curvature of the transmission line, ensuring good contact with the transmission line and improving the heat transfer efficiency. In addition, the arc structure of the heat spreader can be customized according to the diameters of different transmission lines to ensure the best heat transfer effect. Furthermore, heat dissipation fins can be added to the surface of the heat spreader to improve the heat dissipation efficiency and further enhance the thermoelectric power generation effect.

[0036] In addition, the device can collect the temperature data on the surface of the transmission line in real time and monitor the abnormal temperature change of the transmission line based on the temperature difference change. By analyzing the correlation between the temperature difference energy collection data and the aeolian vibration of the conductor, an abnormal temperature change warning signal is generated and transmitted to the remote monitoring terminal to realize the real-time monitoring and warning of the operating state of the transmission line, which helps to detect and handle potential faults in time and improve the safety and reliability of the transmission line.

[0037] In this embodiment, the temperature difference between the transmission line and the environment is converted into electric energy to provide a stable power supply for the sensors on the transmission line, solving the problem that the traditional power supply method is difficult to meet the power supply requirements of a large number of sensing nodes and ensuring the continuous and stable operation of the sensors. The adaptive adjustment design of the synchronous centripetal structure enables the device to closely fit transmission lines with different diameters and shapes, enhancing the versatility and adaptability of the device and ensuring stable operation under various complex environmental conditions. The reasonable design and layout of the micro-thermoelectric power generation unit group enable the device to make full use of the temperature difference energy around the transmission line, improve the energy conversion efficiency, and provide sufficient and stable power support for the sensors. And it has certain intelligent and automatic capabilities, which can automatically adjust the clamping force, collect data, analyze abnormalities and send warning signals, reducing manual intervention and improving the efficiency and accuracy of monitoring and management.

[0038] Optionally, in some embodiments, the clamping assembly includes two support bottom plates arranged symmetrically in mirror image and multiple groups of sliding blocks; wherein, the support bottom plates are respectively arranged on both sides of the transmission line; the sliding blocks are circumferentially distributed in the sliding grooves of the support bottom plates and slide radially along the sliding grooves;

[0039] The sliding connection assembly includes multiple L-shaped support frames. The two ends of the support frame are respectively connected to adjacent sliding blocks and cooperate with the grooves of the support bottom plate through convex columns, so that the sliding blocks move synchronously in the sliding grooves to adjust the clamping force.

[0040] Specifically, the clamping assembly consists of two support base plates arranged in mirror symmetry and multiple sliding blocks. These two support base plates are respectively arranged on both sides of the transmission line. The main function of the support base plate is to provide a stable support foundation for the entire device, ensuring the installation and fixation of the device on the transmission line. The sliding blocks are circumferentially distributed in the sliding grooves of the support base plate and can slide radially along the sliding grooves. The design of the sliding blocks enables the device to adaptively adjust according to the diameter and shape of the transmission line, ensuring that the device can closely fit the surface of the transmission line and improving the versatility and adaptability of the device. In addition, the support base plate can be made of high-strength and lightweight materials such as aluminum alloy or composite materials to improve the durability and portability of the device. At the same time, the surface of the support base plate can be specially treated, such as adding anti-slip textures or coatings, to enhance the friction with the transmission line and prevent the device from sliding during use. The sliding blocks can be made of self-lubricating materials such as polytetrafluoroethylene (PTFE) or its composite materials to reduce the frictional resistance during sliding and improve the smoothness and lifespan of sliding. In addition, the shape and size of the sliding blocks can be customized according to different diameters of the transmission line to achieve the best fitting effect.

[0041] Specifically, the sliding connection assembly consists of multiple L-shaped support frames. The two ends of each L-shaped support frame are respectively connected to adjacent sliding blocks. The L-shaped support frame is matched with the groove of the support base plate through a convex column. This design enables the movement of the sliding blocks in the sliding grooves to be synchronized, thereby realizing the adjustment of the uniform clamping force on the transmission line. The linkage effect of the L-shaped support frames ensures the synchronous movement of all sliding blocks, enabling the device to evenly fit on the surface of the transmission line and avoiding device instability or damage caused by uneven local pressure. In addition, the sliding grooves on the support base plate can be designed to have a certain elasticity or adjustability to adapt to transmission lines of different diameters. For example, the width of the sliding groove can be slightly larger than the thickness of the sliding block, allowing the sliding block to have a certain degree of freedom in the sliding groove, and at the same time realizing the precise positioning of the sliding block through elastic materials or adjustment mechanisms. The design of the L-shaped support frame can be further optimized, such as increasing the strength and rigidity of the support frame to withstand greater clamping forces. At the same time, the connection method of the L-shaped support frame can adopt a more reliable mechanical connection such as bolt connection or riveting to improve the stability and reliability of the device.

[0042] In a specific embodiment, sensors such as pressure sensors or displacement sensors can also be integrated in the clamping assembly or the sliding connection assembly to real-time monitor the position of the sliding blocks and the magnitude of the clamping force. By connecting to a control system, automatic adjustment of the clamping force is realized to ensure that the device is always in the best working state. Introducing an intelligent adjustment system, such as a control system based on a microcontroller or a single-chip microcomputer, can automatically adjust the position of the sliding blocks and the clamping force according to the real-time monitored data. This intelligent design can improve the adaptability and reliability of the device, reduce manual intervention, and improve work efficiency.

[0043] The linkage design of the clamping component and the sliding connection component in this embodiment enables the device to adaptively adjust according to the diameter and shape of the transmission line, ensuring that the device can closely fit different specifications of transmission lines, and improving the versatility and adaptability of the device. Through the linkage effect of the L-shaped support frame, the synchronous movement of the sliding blocks in the chute realizes a uniform clamping force distribution on the transmission line, avoiding device instability or damage caused by excessive or insufficient local pressure, and improving the stability and reliability of the device.

[0044] Optionally, in some embodiments, the sliding blocks are divided into two groups, with six sliding blocks evenly distributed circumferentially in each group. Each sliding block cooperates with the chute through a guiding and limiting structure to limit the sliding direction of the sliding block to the radial direction.

[0045] Specifically, the sliding blocks in this embodiment can be divided into two groups, with six sliding blocks evenly distributed circumferentially in each group. This grouping design enables the sliding blocks to be evenly distributed around the transmission line, ensuring the balance and stability of the device in the circumferential direction. Each sliding block is evenly distributed circumferentially along the chute of the support base plate. This layout ensures that the sliding blocks can evenly transmit force during movement, avoiding device deformation or damage caused by excessive local force. The sliding blocks cooperate with the chute through a guiding and limiting structure, restricting the sliding direction of the sliding blocks to the radial direction. This guiding and limiting design ensures the precise movement of the sliding blocks in the chute, avoiding deviation or jamming of the sliding blocks during sliding, and improving the reliability and stability of the device. The sliding blocks slide radially along the chute, which means that the movement direction of the sliding blocks is consistent with the radial direction of the transmission line. This design enables the device to adaptively adjust according to the diameter of the transmission line, ensuring that the device closely fits the surface of the transmission line and improving the energy harvesting efficiency.

[0046] In addition, the sliding blocks can be made of self-lubricating materials such as polytetrafluoroethylene (PTFE) or its composite materials to reduce the frictional resistance during sliding, improve the smoothness and service life of sliding. In addition, the material should have good wear resistance and weather resistance to adapt to the complex environmental conditions of the transmission line. The surface of the sliding blocks is subjected to special treatment, such as adding a hard coating or texture, to enhance its wear resistance and self-cleaning ability, and reduce the influence of dust and debris on sliding. The manufacturing precision of the guiding and limiting structure can be further improved to ensure the precise fit of the sliding blocks in the chute. For example, high-precision processing techniques or precision molds are used to reduce the gap between the sliding blocks and the chute, improving the stability and reliability of sliding. An anti-jamming design is introduced into the guiding and limiting structure, such as adding a lubricant storage groove in the chute or using self-lubricating materials, to reduce the possibility of the sliding blocks jamming during sliding and improve the service life of the device.

[0047] In a specific embodiment, a position sensor, such as a magnetic induction sensor or an optoelectronic sensor, is integrated in the sliding block or the sliding groove to monitor the position and movement state of the sliding block in real time. By connecting to a control system, precise control and adjustment of the position of the sliding block are achieved to ensure that the device is always in the best working state. An automatic adjustment system, such as a control system based on a microcontroller or a single-chip microcomputer, is introduced to automatically adjust the position of the sliding block according to the real-time monitored data to adapt to transmission lines of different diameters, improving the adaptability and intelligence level of the device.

[0048] The grouping and circumferential uniform distribution design of the sliding blocks in this embodiment ensure the uniform transmission of force, avoiding device deformation or damage caused by excessive local stress, and improving the stability and reliability of the device. The guiding and limiting structure restricts the sliding direction of the sliding block to the radial direction, ensuring that the device can perform precise adaptive adjustment according to the diameter of the transmission line, and improving the fitting performance and energy harvesting efficiency of the device.

[0049] Optionally, in some embodiments, the number of L-shaped support frames is six groups. The two ends of each group of L-shaped support frames are inserted into the through holes of adjacent sliding blocks to form a linkage structure, so that the radial movement of the sliding blocks is synchronously transmitted to all L-shaped support frames.

[0050] Specifically, the L-shaped support frames in this embodiment can be set to six groups, and the two ends of each group of support frames are respectively inserted into the through holes of adjacent sliding blocks. This setting enables each L-shaped support frame to connect two adjacent sliding blocks, forming a linkage structure. The two ends of the L-shaped support frame are inserted into the through holes of the sliding blocks. Through this connection method, the radial movement of the sliding blocks can be synchronously transmitted to all L-shaped support frames. When the sliding blocks move in the sliding groove, the linkage effect of the L-shaped support frames ensures the synchronous movement of all sliding blocks, thereby realizing the adjustment of the uniform clamping force on the transmission line. Through the linkage of the L-shaped support frames, the radial movement of the sliding blocks can be synchronously transmitted to ensure that all sliding blocks move simultaneously. This synchronous movement is crucial for maintaining the balance and stability of the device on the transmission line. The linkage structure ensures the uniform distribution of the clamping force, avoiding device deformation or damage caused by excessive stress on individual sliding blocks, and improving the stability and reliability of the device.

[0051] In addition, the L-shaped support frame can be made of high-strength and lightweight materials, such as aluminum alloy or high-strength plastic, to improve its load-bearing capacity and durability. At the same time, the material should have good weather resistance and corrosion resistance to adapt to the complex environmental conditions where the transmission line is located. Surface treatment of the L-shaped support frame, such as plating or coating, can enhance its corrosion resistance and wear resistance, and extend its service life. The shape of the L-shaped support frame can be optimized according to actual needs, for example, by increasing the width or thickness of the support frame to improve its strength and rigidity. At the same time, the connection part of the support frame can be designed to be adjustable for easy installation and maintenance. An elastic design can be introduced into the L-shaped support frame, such as adding elastic elements at the connection of the support frame, which can absorb a certain amount of vibration and impact, and improve the stability and reliability of the device.

[0052] In a specific embodiment, a stress sensor can also be integrated into the L-shaped support frame to monitor the stress condition of the support frame in real time. By connecting to a control system, automatic adjustment of the clamping force can be realized to ensure that the device is always in the best working state. An automatic adjustment system, such as a control system based on a microcontroller or a single-chip microcomputer, can be introduced to automatically adjust the position of the sliding block and the clamping force according to the real-time monitored data, improving the intelligence level of the device.

[0053] The linkage design of the L-shaped support frame in this embodiment ensures the synchronous movement of the sliding block, realizes the adjustment of the uniform clamping force on the transmission line, and improves the stability and reliability of the device. Through the linkage effect, the clamping force is evenly distributed on the entire device, avoiding deformation or damage of the device caused by excessive local stress, and extending the service life of the device.

[0054] Optionally, in some embodiments, the micro thermoelectric power generation unit group includes a plurality of thermoelectric power generation chips and a heat sink. The inner surface of the heat sink is in contact with the transmission line, the outer surface of the heat sink is fixedly connected to the thermoelectric power generation chips, and the heat sink is of an arc structure to match the outer surface curvature of the transmission line.

[0055] Specifically, the micro thermoelectric power generation unit group of this embodiment may include multiple thermoelectric power generation chips. A thermoelectric power generation chip is a key component that converts thermal energy into electrical energy using the Seebeck Effect. Each thermoelectric power generation chip is usually composed of two different thermoelectric materials. When there is a temperature difference between the two ends of the thermoelectric power generation chip, an electromotive force will be generated inside it, thereby realizing the conversion of thermal energy into electrical energy. The heat pipe is another important component of the micro thermoelectric power generation unit group. The inner surface of the heat pipe contacts the power transmission line, which is used to collect the heat of the power transmission line and transfer it evenly to the thermoelectric power generation chips. The design of the heat pipe helps to improve the efficiency of heat transfer, ensuring that the thermoelectric power generation chips can effectively utilize the temperature difference between the power transmission line and the environment for power generation. The heat pipe adopts an arc-shaped structure design to match the outer surface curvature of the power transmission line. This design ensures good contact between the heat pipe and the power transmission line and improves the efficiency of heat transfer. The arc-shaped structure of the heat pipe can not only adapt to the circular cross-section of the power transmission line but also absorb and disperse the vibration and deformation generated during the operation of the power transmission line to a certain extent, improving the stability and reliability of the device. The outer surface of the heat pipe is fixedly connected to the thermoelectric power generation chips, and this fixed connection method ensures that heat can be efficiently transferred from the heat pipe to the thermoelectric power generation chips. The fixed connection can be achieved by welding, bonding, or other reliable connection methods to ensure the stability of the structure and the efficiency of heat transfer.

[0056] In addition, the arc-shaped structure of the heat pipe can be customized according to the diameters of different power transmission lines to achieve the best heat transfer effect. Furthermore, microstructures or coatings can be added to the surface of the heat pipe to enhance its heat dissipation performance or reduce heat loss. Optimize the layout of the thermoelectric power generation chips on the heat pipe so that they can cover the surface of the heat pipe more evenly, improving the overall power generation efficiency. An array layout or a staggered layout can be adopted to make full use of the limited space.

[0057] In a specific embodiment, a temperature sensor can be integrated into the heat pipe or the thermoelectric power generation chips to monitor the working temperature of the thermoelectric power generation unit in real time. By connecting to a control system, automatic adjustment of the thermoelectric power generation unit can be realized. For example, by adjusting the operating state of the heat dissipation device, the power generation efficiency can be optimized. An energy management system is introduced to effectively manage and distribute the electrical energy generated by the thermoelectric power generation unit. The electrical energy can be stored in a storage battery or directly supply power to sensors and other devices while monitoring the usage of the electrical energy to ensure the stable operation of the system.

[0058] In this embodiment, through the reasonable design and layout of the heat pipe and the thermoelectric generator, the device can efficiently convert the temperature difference between the transmission line and the environment into electrical energy, providing a stable power supply for the sensors on the transmission line, and solving the problem that the traditional power supply method is difficult to meet the power supply requirements of a large number of sensing nodes. The arc-shaped structure design of the heat pipe ensures good contact with the transmission line, improves the heat transfer efficiency, and enhances the stability and reliability of the device on the transmission line. The device can adapt to the operating environment and mechanical vibration of the transmission line to ensure long-term stable operation. The thermoelectric power generation unit group can not only supply power for the sensors, but also realize real-time monitoring and early warning of abnormal temperature changes on the transmission line by monitoring the temperature difference changes. Combined with the temperature sensor and the energy management system, the device can timely detect potential faults of the transmission line and improve the safety and reliability of the transmission line.

[0059] Optionally, in some embodiments, the arc central angle of the heat pipe is 60°, and the micro-thermoelectric power generation unit group includes six micro-thermoelectric power generation units circumferentially and evenly distributed covering the transmission line.

[0060] Specifically, the micro-thermoelectric power generation unit group in this embodiment may include six micro-thermoelectric power generation units, which are circumferentially and evenly distributed around the transmission line, ensuring that the heat around the transmission line can be evenly collected and converted into electrical energy. The heat pipe in each micro-thermoelectric power generation unit adopts an arc-shaped structure with an arc central angle of 60°, enabling the heat pipe to closely fit the outer surface of the transmission line and improving the heat transfer efficiency. The inner surface of the heat pipe contacts the transmission line to collect heat, and the outer surface is fixedly connected to the thermoelectric generator to transfer the heat to the generator.

[0061] In this embodiment, through six circumferentially and evenly distributed micro-thermoelectric power generation units, the device can make full use of the temperature difference energy around the transmission line, improve the energy conversion efficiency, and provide a stable power supply for the sensors. The 60° arc design of the heat pipe ensures good contact with the transmission line, improves the uniformity and efficiency of heat transfer, avoids local overheating or overcooling, and improves the stability of power generation. The circumferentially and evenly distributed layout enables the device to adapt to transmission lines with different diameters and shapes, enhancing the versatility and adaptability of the device.

[0062] Optionally, in some embodiments, the thermoelectric generator is bonded to the heat pipe through a high thermal conductivity adhesive layer, and the heat pipe is made of a metal matrix composite material.

[0063] Specifically, the thermoelectric power generation chip is bonded to the heat spreader through a high thermal conductivity adhesive layer. The function of the high thermal conductivity adhesive layer is to ensure that heat can be efficiently transferred from the heat spreader to the thermoelectric power generation chip. The high thermal conductivity adhesive has good heat conduction performance, which can reduce the thermal resistance between the heat spreader and the thermoelectric power generation chip and improve the heat transfer efficiency. The heat spreader is made of a metal matrix composite material. The metal matrix composite material has a high thermal conductivity, good mechanical strength and corrosion resistance, which can effectively collect and transfer the heat of the transmission line, and at the same time provide sufficient structural stability to adapt to the operating environment of the transmission line.

[0064] In addition, at the interface between the thermoelectric power generation chip and the heat spreader, special micro-nano structures can be designed, such as increasing the roughness of the interface or manufacturing micro-nano level contact points, to improve the heat transfer efficiency. This interface optimization design helps to reduce the thermal resistance and improve the speed and effect of heat transfer. According to the actual heat transfer requirements and the diameter of the transmission line, optimize the thickness and shape of the heat spreader. A thinner heat spreader can reduce the distance of heat transfer and improve the heat transfer efficiency, but sufficient mechanical strength needs to be ensured. At the same time, the shape of the heat spreader can be fine-tuned according to the curvature of the transmission line to achieve the best fitting effect and heat transfer performance.

[0065] In this embodiment, through the use of the high thermal conductivity adhesive layer and the metal matrix composite material, it is ensured that heat can be efficiently transferred from the heat spreader to the thermoelectric power generation chip, improving the efficiency of thermoelectric power generation and providing a more stable power supply for the sensor. The heat spreader made of the metal matrix composite material has good mechanical strength and corrosion resistance, can adapt to the operating environment and mechanical vibration of the transmission line, and improves the stability and reliability of the device.

[0066] Optionally, in some embodiments, when the synchronous centripetal mechanism is in the closed state, the radial displacement of the sliding block is adjusted through the linkage of the L-shaped support frame, so that the contact pressure between the micro thermoelectric power generation unit and the surface of the transmission line is evenly distributed.

[0067] Specifically, when the synchronous centripetal mechanism is in the closed state, the slider can perform radial displacement, which is achieved by the slider sliding in the chute of the support base plate. The moving direction of the slider is consistent with the radial direction of the transmission line, which means that the movement of the slider can directly adjust the distance between it and the surface of the transmission line. The radial displacement of the slider is adjusted through the linkage of the L-shaped support frame. The L-shaped support frame connects adjacent sliders. When one slider undergoes radial movement, through the transmission of the L-shaped support frame, this movement will be synchronized to other sliders. This linkage design ensures the synchronous movement of all sliders, thereby achieving uniform clamping of the transmission line. Through the above-mentioned linkage adjustment mechanism, the contact pressure between the micro thermoelectric power generation unit and the surface of the transmission line can be evenly distributed. The uniform contact pressure ensures good thermal contact between the thermoelectric power generation unit and the transmission line, improves the heat transfer efficiency, and at the same time avoids device damage or damage to the surface of the transmission line caused by excessive local pressure. In addition, elastic materials such as rubber or spring steel can be introduced at the connection parts of the L-shaped support frame or the slider, which can absorb certain vibrations and impacts and improve the stability and reliability of the device during the operation of the transmission line.

[0068] In a specific embodiment, a pressure sensor can also be integrated in the slider or the L-shaped support frame to monitor the contact pressure between the micro thermoelectric power generation unit and the surface of the transmission line in real time. By connecting to the control system, automatic adjustment of the contact pressure is realized to ensure that it always remains within the optimal range. An intelligent adjustment system based on a microcontroller or a single-chip microcomputer is introduced to automatically adjust the position and clamping force of the slider according to the feedback data of the pressure sensor. This intelligent design can improve the adaptability and reliability of the device, reduce manual intervention, and improve work efficiency.

[0069] In this embodiment, through the linkage adjustment of the L-shaped support frame, it is ensured that the contact pressure between the micro thermoelectric power generation unit and the surface of the transmission line is evenly distributed, the heat transfer efficiency is improved, and at the same time, device damage or damage to the surface of the transmission line caused by excessive local pressure is avoided. The uniform contact pressure ensures good thermal contact between the thermoelectric power generation unit and the transmission line, improves the stability and efficiency of energy conversion, and provides a more reliable power supply for the sensor.

[0070] In a specific embodiment, please refer to Figure 2 and Figure 3 , Figure 2 which is a schematic diagram of the synchronous centripetal structure in the open state, Figure 3 and

[0071] is a schematic diagram of the synchronous centripetal structure in the closed state. Figure 2As shown, in the open state of the synchronous centripetal structure, the sliding block is located outside the chute of the support base plate. At this time, the convex column of the L-shaped support frame is located outside the groove of the support base plate, ensuring that the sliding block can move freely. The sliding block slides outward in the chute, away from the transmission line. This movement increases the distance between the two support base plates of the synchronous centripetal structure, providing sufficient space for the installation or disassembly of the device. The L-shaped support frame plays a guiding and supporting role during the movement of the sliding block. Through the connection of the L-shaped support frame, the movement of the sliding blocks remains synchronized, ensuring the stability and balance of the entire structure.

[0072] As Figure 3 shown, in the closed state of the synchronous centripetal structure, the sliding block is located inside the chute of the support base plate. At this time, the convex column of the L-shaped support frame is located inside the groove of the support base plate, ensuring that the sliding block can closely fit the transmission line. The sliding block slides inward in the chute, close to the transmission line. This movement reduces the distance between the two support base plates of the synchronous centripetal structure, realizing the tight clamping of the transmission line. The L-shaped support frame plays a linkage and adjustment role during the movement of the sliding block. Through the connection of the L-shaped support frame, the movement of the sliding blocks remains synchronized, ensuring the stability of the entire structure and the uniform distribution of the clamping force.

[0073] It can be seen that the open and closed states of the synchronous centripetal structure in this embodiment can be adaptively adjusted according to the diameter and shape of the transmission line, ensuring that the device can closely fit transmission lines of different specifications, improving the versatility and adaptability of the device; through the linkage of the L-shaped support frame, the synchronous movement of the sliding blocks in the chute realizes the uniform distribution of the clamping force on the transmission line, avoiding instability or damage of the device caused by excessive or too small local pressure, and improving the stability and reliability of the device. In addition, the open state of the synchronous centripetal structure provides sufficient space for the installation and maintenance of the device, reducing the operation difficulty and improving the work efficiency. The closed state ensures the stability and safety of the device during operation. The closed state of the synchronous centripetal structure enables the micro thermoelectric power generation unit to closely fit the transmission line, improving the heat transfer efficiency, thereby realizing efficient energy conversion and providing a stable power supply for the sensor.

[0074] Optionally, in some embodiments, the device further includes a temperature sensor, which is integrated on the support base plate of the synchronous centripetal mechanism and powered by the micro thermoelectric power generation unit, and is used to collect the surface temperature data of the transmission line in real time.

[0075] Specifically, the micro-thermoelectric energy harvesting device for transmission lines in this embodiment further includes a temperature sensor, which is integrated on the support base plate of the synchronous centripetal mechanism. The support base plate, as the main structural component of the device, provides a stable installation position for the temperature sensor. This integrated design enables the temperature sensor to closely adhere to the surface of the transmission line and collect its temperature data in real time. The temperature sensor is powered by the micro-thermoelectric power generation unit. This power supply method solves the problem of difficult power supply for traditional sensors in the transmission line environment, ensuring that the sensor can work stably for a long time without external power support. Additionally, an integrated wireless transmission module enables the temperature sensor to transmit the collected data to the remote monitoring terminal in real time. Wireless communication technologies such as ZigBee, LoRa, or NB-IoT can be used. These technologies have low power consumption, long-distance transmission, and good penetration ability, and are suitable for complex environments such as transmission lines.

[0076] In a specific embodiment, intelligent early warning is performed based on the collected temperature data. By setting temperature thresholds and anomaly detection algorithms, when the surface temperature of the transmission line exceeds the normal range or shows abnormal changes, the system can automatically send out early warning signals. This intelligent early warning mechanism can timely detect potential fault hazards and improve the safety and reliability of the transmission line. The collected temperature data is deeply analyzed and processed, combined with historical data and environmental information, to establish a temperature change model. Through data analysis, the operating state and potential problems of the transmission line can be predicted, providing a scientific basis for maintenance and management.

[0077] The integration of the temperature sensor in this embodiment realizes the real-time monitoring of the surface temperature of the transmission line, providing important data support for the operating state of the transmission line. By obtaining temperature information in a timely manner, faults caused by abnormal temperatures can be effectively prevented, improving the safety and reliability of the transmission line. The micro-thermoelectric power generation unit provides a stable power source for the temperature sensor, solving the problem of difficult power supply for traditional sensors in the transmission line environment. This self-powered method reduces the dependence on batteries or external power sources, lowering the maintenance cost and workload. The use of high-precision and high-reliability temperature sensors and wireless transmission technologies improves the accuracy of temperature measurement and the stability of data transmission. The optimized energy management and intelligent early warning system further enhance the overall performance and reliability of the device.

[0078] Optionally, in some embodiments, the micro-thermoelectric energy harvesting device generates an abnormal temperature change early warning signal by analyzing the correlation between the thermoelectric energy harvesting data and the conductor's aeolian vibration, and transmits it to the remote monitoring terminal.

[0079] Specifically, the micro thermoelectric energy harvesting device can generate an abnormal temperature change warning signal by analyzing the correlation between the thermoelectric energy harvesting data and the micro-vibration of the wire. The device has the capabilities of data acquisition, processing, and analysis, can monitor the temperature change of the transmission line in real time, and combine with the micro-vibration condition of the wire to determine whether there is an abnormal temperature change. The warning signal will be transmitted to the remote monitoring terminal for maintenance personnel to monitor and analyze in real time. The remote monitoring terminal can be a computer system, mobile device, or other monitoring platforms in the control center, receive the warning signal through wireless communication technology, and perform further processing and decision-making.

[0080] In addition, the thermoelectric energy harvesting data and the micro-vibration data of the wire can be fused and processed. Through multi-sensor data fusion algorithms, the accuracy and reliability of abnormal detection can be improved. Methods such as Kalman filtering and neural networks can be used to process and analyze the data. Machine learning algorithms are used to analyze and model the historical data to establish normal temperature change and micro-vibration patterns. By comparing the real-time data with the model, abnormal situations can be detected in a timely manner and warnings can be issued. Classification algorithms such as support vector machines and decision trees can be used for abnormal detection. According to different environmental conditions and operating states, the warning threshold can be dynamically adjusted. For example, in high-temperature or strong-wind weather, the warning thresholds for temperature and vibration are appropriately adjusted to avoid false alarms and missed alarms. Advanced wireless communication technologies such as 5G and LoRaWAN are adopted to ensure that the warning signal can be transmitted to the remote monitoring terminal quickly and stably. These technologies have the characteristics of high bandwidth, low latency, and long-distance transmission, and are suitable for complex environments such as transmission lines.

[0081] Through the analysis of the thermoelectric energy harvesting data and the micro-vibration data of the wire in this embodiment, the device can monitor the temperature change of the transmission line in real time, detect abnormal temperature changes in a timely manner and issue warning signals, which helps to take measures in advance to prevent the occurrence of faults and improve the safety and reliability of the transmission line. The intelligent warning system can automatically analyze data, judge abnormalities, and issue warnings, reducing the workload of manual intervention and monitoring. Through machine learning and data analysis, the accuracy and reliability of the warning are improved, and the risks of false alarms and missed alarms are reduced. The introduction of the remote monitoring terminal enables maintenance personnel to monitor the operating state of the transmission line in real time at a place far away from the transmission line, improving the efficiency and convenience of management. Warnings can be responded to in a timely manner, corresponding maintenance measures can be taken, and the fault downtime can be reduced. Through the timely warning and processing of abnormal temperature changes, the device can effectively prevent transmission line faults caused by abnormal temperatures, improve the reliability and safety of the transmission line. The economic losses and social impacts caused by faults are reduced.

[0082] In summary, the micro-temperature difference energy collection device for a transmission line provided in an embodiment of the present application includes: a synchronous centripetal structure and a micro-temperature difference power generation unit group; wherein the synchronous centripetal structure includes an adaptively adjustable clamping component and a sliding connection component, and the synchronous centripetal structure is used to achieve fitting with the transmission line through the linkage between the clamping component and the sliding connection component; the micro-temperature difference power generation unit group includes a plurality of micro-temperature difference power generation units circumferentially arranged around the transmission line, and fixed to the surface of the transmission line through the synchronous centripetal structure, and is used to convert the temperature difference between the transmission line and the environment into electrical energy, so as to power sensors on the transmission line, and monitor abnormal temperature changes of the transmission line based on temperature difference changes.

[0083] The micro temperature difference energy collection device for the transmission line provided in the embodiment of the present application utilizes a synchronous centripetal mechanism to dynamically fit the complex surface of the transmission line, ensures that the micro temperature difference power generation unit group is in close contact with the line, efficiently captures the temperature difference energy between the line and the environment, and converts it into electrical energy, providing continuous and stable self-power supply for the sensors on the transmission line, and solves the bottleneck problem that the traditional power supply method is difficult to continuously supply power in a complex outdoor environment; through the temperature difference power generation unit group, the temperature change characteristics of the transmission line are sensed in real time, and early warning of abnormal temperature change is achieved, thereby improving the safety and operation and maintenance efficiency of the transmission line, and avoiding the risk of failure caused by local overheating or loosening. It can be seen that the present application can provide stable power supply for the sensor, realize real-time monitoring of the temperature of the transmission line and early warning of abnormal temperature change, and can effectively improve the safety, reliability and monitoring and management efficiency of the transmission line.

[0084] That is, the above description is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present application, such as the mutual combination of technical features between the embodiments, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

[0085] In addition, for structural elements with the same or similar characteristics, the present application may use the same or different reference numerals for identification. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0086] In this application, the word "for example" is used to mean "used as an example, illustration or explanation". Any embodiment described as "for example" in this application is not necessarily interpreted as being more preferred or more advantageous than other embodiments. In order to enable any person skilled in the art to implement and use the present application, the present application provides the above description. In the above description, various details are listed for the purpose of explanation.

[0087] It should be understood that those skilled in the art will recognize that the present application can be implemented without using these specific details. In other embodiments, well-known structures and processes will not be elaborated in detail to avoid unnecessary details that make the description of the present application obscure. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest range of principles and features disclosed in the present application.

[0088] The above is a detailed introduction to a micro temperature difference energy collection device for a power transmission line provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, according to the idea of the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A micro thermoelectric energy harvesting device for transmission lines, characterized in that, It includes a synchronous centripetal structure and a micro-thermoelectric power generation unit group; The synchronous centripetal structure includes a clamping component and a sliding connection component with adaptive adjustment. The synchronous centripetal structure is used to achieve fitting with the transmission line through the linkage between the clamping component and the sliding connection component; The micro-thermoelectric power generation unit group includes a plurality of micro-thermoelectric power generation units circumferentially arranged around the transmission line and is fixed on the surface of the transmission line through the synchronous centripetal structure, which is used to convert the temperature difference between the transmission line and the environment into electric energy to supply power to the sensors on the transmission line and monitor the abnormal temperature change of the transmission line based on the temperature difference change.

2. The micro thermoelectric energy harvesting device for transmission lines according to claim 1, characterized in that, The clamping component includes two symmetrically arranged support bottom plates and multiple groups of sliding blocks; among them, the support bottom plates are respectively arranged on both sides of the transmission line; the sliding blocks are circumferentially distributed in the sliding grooves of the support bottom plates and slide radially along the sliding grooves; The sliding connection component includes a plurality of L-shaped support frames. The two ends of the support frames are respectively connected to adjacent sliding blocks and cooperate with the grooves of the support bottom plates through convex columns, so that the sliding blocks move synchronously in the sliding grooves to adjust the clamping force.

3. The micro thermoelectric energy harvesting device for a transmission line according to claim 2, wherein The sliding blocks are divided into two groups, with six sliding blocks evenly distributed circumferentially in each group. Each sliding block cooperates with the sliding groove through a guiding and limiting structure to limit the sliding direction of the sliding block to the radial direction.

4. The micro thermoelectric energy harvesting device for a transmission line according to claim 2, characterized in that The number of the L-shaped support frames is six groups. The two ends of each group of L-shaped support frames are inserted into the through holes of adjacent sliding blocks to form a linkage structure, so that the radial movement of the sliding blocks is synchronously transmitted to all the L-shaped support frames.

5. The micro thermoelectric energy harvesting device for a power transmission line according to claim 1, characterized in that, The micro-thermoelectric power generation unit group includes a plurality of thermoelectric power generation chips and a heat sink. The inner surface of the heat sink is in contact with the transmission line, the outer surface of the heat sink is fixedly connected to the thermoelectric power generation chips, and the heat sink is an arc-shaped structure to match the outer surface curvature of the transmission line.

6. The micro thermoelectric energy harvesting device for transmission lines according to claim 5, characterized in that, The arc central angle of the heat sink is 60°, and the micro-thermoelectric power generation unit group includes six micro-thermoelectric power generation units evenly distributed circumferentially covering the transmission line.

7. The micro thermoelectric energy harvesting device for a power transmission line according to claim 5, wherein, The thermoelectric power generation chips and the heat sink are bonded through a high thermal conductivity adhesive layer, and the heat sink is made of a metal matrix composite material.

8. The micro thermoelectric energy harvesting device for transmission lines according to claim 2, characterized in that When the synchronous centripetal mechanism is in the closed state, the radial displacement of the sliding blocks is adjusted through the linkage of the L-shaped support frames, so that the contact pressure between the micro-thermoelectric power generation units and the surface of the transmission line is evenly distributed.

9. The micro thermoelectric energy harvesting device for transmission lines according to claim 1, characterized in that, The device also includes a temperature sensor, which is integrated on the support bottom plate of the synchronous centripetal mechanism and is powered by the micro-thermoelectric power generation unit, and is used to collect the surface temperature data of the transmission line in real time.

10. The micro thermoelectric energy harvesting device for transmission lines according to claim 1, characterized in that, The micro-thermoelectric energy collection device generates an abnormal temperature change warning signal by analyzing the correlation between the thermoelectric energy collection data and the aeolian vibration of the wire and transmits it to the remote monitoring terminal.

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