Intelligent self-locking overhead line connection device

Abstract

The present invention discloses an intelligent self-locking overhead line connection device, which belongs to the field of overhead line connection. The intelligent self-locking overhead line connection device comprises an upper outer frame, a lower outer frame is arranged at the lower end of the upper outer frame, and connecting sleeves are welded inside the lower outer frame and the upper outer frame, and first bolts are rotatably arranged between the front and rear ends of the upper outer frame corresponding to the connecting sleeve, and a connecting block is welded around the outside of the first bolt. The present invention solves the problem that the shaking and loosening of the existing line connection hardware during daily use will reduce the tightness of the connection between the fastening bolt and the self-locking nut, resulting in poor stability of the hardware connection. The present invention can actively make the limiting arm fit the connecting block through the elasticity of the spring coil, and limit the transmission plate through the limiting block, which can further realize the self-locking of the first bolt and improve the tightness of the two connecting sleeves.

Description

Technical Field

[0001] The invention relates to the field of overhead line connection, in particular to an intelligent self-locking overhead line connection device. Background Art

[0002] Overhead line connection device refers to a special device used to connect, branch or continue overhead wires in the power system. It is usually made of metal materials with good electrical conductivity and has good mechanical strength and electrical properties to ensure the stability and safety of power transmission. These devices are widely used in the construction and maintenance of transmission lines and can effectively transmit electric energy from power stations to various power consumption points;

[0003] A Chinese patent with publication number CN210867116U discloses a self-locking overhead line connection fitting, including an upper frame, a wire clamp assembly, a self-locking assembly and an open-and-close clamp. A lower frame is provided at the bottom of the upper frame. By adding a self-locking assembly and a self-locking nut inside the fitting, the problem of loosening of traditional wire clamps during application as the use time increases is better solved. During the application of the fitting, since sleeves are provided at the top and bottom of the wire clamp and a support rod is installed inside the sleeve, the support rod can apply an outward force to the upper and lower sleeves when the wire clamps are combined and fixed together.

[0004] During the connection process, the line connection fittings of the above patent are connected by rotating the fastening bolts and the self-locking nuts. However, the shaking and loosening generated during daily use will reduce the tightness of the connection between the fastening bolts and the self-locking nuts, resulting in poor stability of the fitting connection. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligent self-locking overhead line connection device, which can actively make the limiting arm fit the connecting block through the elasticity of the spring coil, and limit the transmission plate by the limiting block, so as to further realize the self-locking of the first bolt, improve the tightness of the fit of the two connecting sleeves, and solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent self-locking overhead line connection device, comprising an upper outer frame, a lower outer frame is arranged at the lower end of the upper outer frame, connecting sleeves are welded inside the lower outer frame and the upper outer frame, a first bolt is rotatably arranged between the front and rear ends of the upper outer frame corresponding to the connecting sleeve, a connecting block is welded around the outside of the first bolt, a bracket is arranged on one side of the outside of the connecting block, a limiting arm rotatably connected through a transmission plate is arranged inside the bracket, the bracket and the connecting sleeve corresponding to the upper outer frame are welded and fixed through a base, and a limiting block connected with a slot is arranged at the upper end of the base.

[0007] Preferably, a limiting strip is provided at the lower end of the limiting block toward the upper end of the interior of the transmission plate, a groove is provided inside the transmission plate, and the groove position of the transmission plate is connected to the external slot of the limiting strip, and the limiting strip is embedded in the groove inside the transmission plate to fix the position of the transmission plate and the limiting arm.

[0008] Preferably, a second bolt is provided passing through the interior of the limiting block, and the exterior of the second bolt cooperates with the internal thread of the base. The limiting block can be fixed by the second bolt passing through the limiting block and embedding into the interior of the base. After the limiting block is fixed, the rotation of the transmission plate can be limited.

[0009] Preferably, a spring ring is arranged around the outside of the position where the transmission plate passes through the bracket, and the two ends of the spring ring are respectively welded and fixed to the bracket and the transmission plate. The elasticity of the spring ring can actively make the limiting arm continuously fit the connecting block, thereby fitting the connecting block and limiting the rotation of the connecting block, thereby preventing the connection between the two connecting sleeves from loosening after the first bolt rotates due to the rotation of the connecting block.

[0010] Preferably, heat conducting plates are provided on both sides of the upper end of the connecting sleeve corresponding to the upper outer frame, and the two ends of the heat conducting plates are respectively welded and fixed to the inner wall of the connecting sleeve. The material of the heat conducting plates is copper, and the copper material can be easily deformed and adapted to the shape of the circuit, so that the heat of the circuit can be quickly transferred to the heat conducting plates, and the temperature of the circuit can be accurately detected through the heat conducting plates.

[0011] Preferably, a SAW temperature sensor is provided at the upper end of the two heat conducting plates, and the outer wall of the SAW temperature sensor is welded and fixed to the connecting sleeve corresponding to the upper outer frame, so that the temperature transferred by the heat conducting plate can be directly detected by the fixed SAW temperature sensor.

[0012] Preferably, a nut that matches the thread of the first bolt is welded between the connecting sleeve corresponding to the lower outer frame and the interior of the lower outer frame. The rotation of the first bolt can be embedded in the nut to complete the fit between the two connecting sleeves, and the restriction of the connecting block can limit the rotation of the first bolt, so that the first bolt can continue to be embedded in the nut and complete the fit between the two connecting sleeves.

[0013] The present invention provides another technical solution: an intelligent self-locking overhead line connection device, further comprising a fixing box at one end between the two SAW temperature sensors, wherein the fixing box has a built-in temperature monitoring system, and the temperature monitoring system comprises:

[0014] SAW temperature sensor detection module: used to accurately measure temperature. The SAW temperature sensor detection module can sense the temperature changes inside the connected device or the surrounding environment, and convert the temperature information into recognizable electrical signals or other forms of signals through surface acoustic wave technology;

[0015] SAW antenna module: responsible for receiving and sending signals related to the SAW temperature sensor detection module. It can transmit the detected temperature signal to other devices wirelessly, or receive instructions and other information sent by external devices;

[0016] Communication protocol conversion module: used to convert the communication protocol used by the SAW antenna module into a protocol that can be recognized by other devices. It can convert the data format and transmit and share it between different devices.

[0017] Microcontroller module: used to process the temperature data transmitted by the SAW temperature sensor detection module and determine whether the temperature data is abnormal according to the preset logic rules;

[0018] Data replication and storage module: used to replicate and store data transmitted by the SAW antenna module. Local storage can facilitate subsequent unified retrieval of data;

[0019] Power management module: used to distribute power to the SAW temperature sensor detection module and SAW antenna module to ensure that each module can obtain a stable power supply.

[0020] Preferably, it also includes an auxiliary temperature monitoring system for monitoring the temperature rise of the overhead line, and the auxiliary temperature monitoring system includes:

[0021] The ambient temperature sensor includes a plurality of ambient temperature sensors fixedly arranged at intervals on the outer wall of the upper outer frame or the lower outer frame at the monitoring node of the overhead line, and used to obtain the ambient temperature value at the monitoring node, and each ambient temperature sensor and the monitoring node form a one-to-one matching identifier;

[0022] Cruise UAV, infrared UAV is equipped with GPS positioning module and infrared thermal imaging module. The infrared thermal imaging module is used to obtain infrared images of monitoring nodes during the cruise process, and the GPS positioning module is used to obtain the location information of each monitoring node during the cruise;

[0023] The data acquisition module is used to collect the real-time temperature values ​​detected by each ambient temperature sensor, as well as the position information and infrared images of each monitoring node obtained by the cruise drone during the cruise process;

[0024] The imaging modeling unit uses 3D imaging technology to integrate the real-time temperature values ​​and location information of each monitoring stage, as well as infrared images, into a three-dimensional virtual scene map.

[0025] A fault monitoring module is used to monitor the ambient temperature value at each monitoring node. When the ambient temperature value exceeds a preset ambient temperature threshold, the corresponding monitoring node is identified as a suspected fault monitoring node.

[0026] The fault location module obtains the information of each suspected fault monitoring node, locates the corresponding suspected fault monitoring node in the three-dimensional virtual scene graph, and renders it in red;

[0027] The first fault notification module notifies the user of the information of the suspected fault monitoring node through the system alarm screen, sound effect, action trigger, E-mail, and text message.

[0028] Preferably, the overhead line between the previous monitoring node and the next monitoring node is located on both sides according to the position of the suspected fault monitoring node, and is set as the line to be detected, and the line surface temperature values ​​t detected by all SAW temperature sensors on the line to be detected are obtained. n ,

[0029] Calculate the average line surface temperature value T of the line to be tested according to the following formula c :

[0030]

[0031] Where n is the number of all SAW temperature sensors on the circuit to be detected;

[0032] Obtain the conductor current value and conductor resistance value of the line to be tested, and calculate the steel core temperature value of the line using the following formula:

[0033]

[0034] Among them, T s is the steel core temperature of the line, I is the conductor current of the line, R is the conductor resistance of the line, λ is the radial thermal conductivity, D 1 is the steel core diameter of the line, D is the steel core aluminum stranded wire diameter of the line,

[0035] When the calculated steel core temperature value exceeds the preset steel core safety temperature threshold, it is judged that there is a safety hazard in the operating temperature of the line to be detected, and the line to be detected is identified as a fault monitoring line. The corresponding fault monitoring line is located in the three-dimensional virtual scene diagram and rendered yellow; at the same time, the fault monitoring line information is notified to the user through the system alarm screen, sound effect, action trigger, E-mail, and SMS through the second fault notification module;

[0036] When the line to be detected is determined to be a fault monitoring line, the overhead lines between the previous monitoring node and the next monitoring node adjacent to the line to be detected are further monitored and determined based on the monitoring node until all overhead lines with faults are determined.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. When the first bolt is twisted, the first bolt rotates in the direction pointed by the limiting arm. During the rotation of the first bolt, the limiting arm will continue to be embedded in the connecting block around the first bolt due to the resilience of the spring coil. The rotation of the first bolt is directly limited by the limiting arm, so as to avoid loosening due to slight rotation between the first bolt and the nut inside the connecting sleeve corresponding to the lower outer frame during daily use. On the other hand, after the connecting block is rotated and the two connecting sleeves are completely fitted, a limiting block is longitudinally pressed and installed on the upper end of the outer side of the base, and the limiting strip protruding inside the limiting block is embedded in the recessed position inside the transmission plate. By limiting the transmission plate and the limiting arm connected at one end, the rotation of the connecting block and the first bolt is further locked, thereby improving the precision of the connection.

[0039] 2. The present invention provides a heat conductive sheet at the upper end of the connecting sleeve inside the upper outer frame. The heat conductive sheet can fit the connected circuit after the two connecting sleeves are clamped together. The heat conductive sheet is made of copper. Through extrusion, the heat conductive sheet can be deformed and fit the clamped circuit. When the circuit generates high temperature, the temperature will be transmitted to the SAW temperature sensor connected to the upper end of the heat conductive sheet. The temperature is detected by the SAW temperature sensor, which is convenient for subsequent inspection and maintenance of the high-temperature position and adjustment of the circuit connection.

[0040] 3. The present invention has a built-in temperature monitoring system in the fixed box. The SAW temperature sensor detection module built into the temperature monitoring system can detect temperature anomalies in time to prevent safety issues such as fire and line damage. By monitoring the temperature data for a long time, the operating performance of the overhead line connection device can be evaluated. Subsequently, the SAW antenna module can remotely transmit the temperature data of the overhead line connection device to the monitoring center, which is convenient for operation and maintenance personnel to understand the operating status of the device in time and realize remote monitoring and management. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a stereoscopic diagram of the overall external structure of the present invention;

[0042] Figure 2 It is a cross-sectional view of the internal structure of the upper outer frame of the present invention;

[0043] Figure 3 It is a front view of the internal structure of the upper outer frame of the present invention;

[0044] Figure 4 For the present invention Figure 3 A partial enlarged view of the middle A area;

[0045] Figure 5 An exploded view of the limiting block installation structure of the present invention;

[0046] Figure 6 A cross-sectional view of the internal structure of the support of the present invention;

[0047] Figure 7 For the present invention Figure 6 A partial enlarged view of the middle B area;

[0048] Figure 8 Schematic diagram of the temperature monitoring system of the present invention.

[0049] In the figure: 1. upper outer frame; 2. lower outer frame; 3. filling block; 4. connecting sleeve; 5. heat conducting plate; 6. sleeve; 7. fixing rod; 8. plug rod; 9. first bolt; 10. connecting block; 11. limiting arm; 12. base; 13. limiting block; 14. second bolt; 15. bracket; 16. SAW temperature sensor; 17. transmission plate; 18. limiting strip; 19. spring ring; 20. fixing box. DETAILED DESCRIPTION

[0050] The present invention is further described below in conjunction with specific embodiments.

[0051] Example 1

[0052] like Figure 1 As shown, the intelligent self-locking overhead line connection device of this embodiment includes an upper outer frame 1, a lower outer frame 2 is provided at the lower end of the upper outer frame 1, and a connecting sleeve 4 is welded inside the lower outer frame 2 and the upper outer frame 1. After the upper outer frame 1 and the lower outer frame 2 are attached, the two connecting sleeves 4 can be attached to clamp and connect the line, and a conductive material is provided on a layer of the connecting sleeve 4 facing the outside, and an insulating material is provided on a layer of the connecting sleeve 4 facing the inside. The conductive material enables the clamped line to be conductive and connected, and the insulating material can prevent the current from being transmitted to the external upper outer frame 1, and prevent the installer from being electrocuted after holding the upper outer frame 1 with his hand;

[0053] In order to improve the stability of the connection between the upper outer frame 1 and the lower outer frame 2, as shown in FIG. Figure 2 and Figure 3 As shown, both sides of the upper end of the lower outer frame 2 are provided with plug rods 8, and the plug rods 8 are welded and fixed to the lower outer frame 2, and grooves are provided on both sides of the interior of the upper outer frame 1, and the positions of the grooves are connected to the external slots of the plug rods 8. When the upper outer frame 1 and the lower outer frame 2 are combined, the plug rods 8 will be inserted into the grooves, which can improve the stability of the connection between the upper outer frame 1 and the lower outer frame 2;

[0054] Wherein, sleeves 6 are provided on both sides of the connecting sleeve 4, and the sleeves 6 are welded and fixed to the connecting sleeves 4. When the two connecting sleeves 4 are combined, the center positions of the two connecting sleeves 4 and the connecting sleeves 6 overlap. The two sleeves 6 are provided with fixing rods 7 inside. When the upper outer frame 1 and the lower outer frame 2 are combined, the fixing rods 7 are inserted into the sleeves 6 in advance. After the upper outer frame 1 and the lower outer frame 2 are combined, the fixing rods 7 will be embedded between the two sleeves 6. The upper outer frame 1 and the lower outer frame 2 can be connected and combined by the fixing rods 7 to avoid gaps and looseness between the upper outer frame 1 and the lower outer frame 2.

[0055] In order to facilitate the connection of the two connecting sleeves 4, as shown in FIG. Figure 2 As shown, the connecting sleeve 4 corresponding to the upper outer frame 1 is provided with a first bolt 9 at both ends facing the interior of the upper outer frame 1, and the outer portion of the first bolt 9 is rotatably connected with the inner portion of the connecting sleeve 4, and the connecting sleeve 4 corresponding to the lower outer frame 2 is provided with a nut facing the interior of the lower outer frame 2, and the nut is welded to the outer wall of the connecting sleeve 4, the center position of the first bolt 9 overlaps with the nut position, and the outer portion of the first bolt 9 cooperates with the internal thread of the nut, and the rotation of the first bolt 9 can be embedded in the nut and realize the connection of the two connecting sleeves 4;

[0056] Among them, a connecting block 10 is arranged around the outside of the first bolt 9, and the connecting block 10 is welded and fixed to the first bolt 9. When the first bolt 9 is rotated and installed, the connecting block 10 will be driven to rotate. Figure 5 and Figure 6 As shown, a bracket 15 is provided on one side of the outside of the connection block 10, and a limiting arm 11 is provided inside the bracket 15, and the limiting arm 11 is embedded in the inside of the connection block 10 and is rotatably connected to the inside of the bracket 15, and the limiting arm 11 is rotatably connected to the inside of the bracket 15 through a transmission sheet 17, and the transmission sheet 17 passes through the bracket 15 and extends to the upper end of the outside of the bracket 15, and the angle of the limiting arm 11 can be adjusted through the transmission sheet 17, and the rotation of the limiting arm 11 facilitates the removal of the first bolt 9;

[0057] In addition, if Figure 6 and Figure 7 As shown, a spring ring 19 is arranged around the outer part of the position where the transmission plate 17 passes through the bracket 15, and the two ends of the spring ring 19 are respectively welded and fixed to the bracket 15 and the transmission plate 17. When the first bolt 9 is rotated and embedded in the nut, the rotation of the connection block 10 will push the limiting arm 11 that is fitted due to the elasticity of the spring ring 19, and the first bolt 9 rotates toward the position pointed by the limiting arm 11. When the first bolt 9 rotates toward the other side pointed by the limiting arm 11 and the connection of the two connecting sleeves 4 is disassembled, the spring ring 19 will elastically make the limiting arm 11 close to the connection block 10 to limit the rotation of the connection block 10 and the first bolt 9 connected. The stability of the rotation connection of the first bolt 9 can be improved by the restriction of the self-locking structure.

[0058] In order to limit the transmission plate 17 during daily use, and in long-term daily use, such as Figure 5 As shown, the lower end of the bracket 15 is welded and fixed to the connecting sleeve 4 corresponding to the upper outer frame 1 through the base 12, and a limiting block 13 is provided at the upper end of the outer side of the base 12, and the limiting block 13 is connected to the upper end slot of the outer side of the base 12, and the limiting block 13 is slidably inserted into the upper end of the outer side of the base 12, and when the limiting block 13 is inserted, the limiting block 13 will be wrapped around the upper end of the outer side of the transmission plate 17;

[0059] Among them, a limiting strip 18 is arranged at the lower end of the limiting block 13 toward the upper end of the inside of the transmission sheet 17, and a groove is arranged inside the transmission sheet 17, and the groove position of the transmission sheet 17 is connected to the outer slot of the limiting strip 18. After the limiting block 13 is combined with the base 12, the limiting strip 18 will limit the transmission sheet 17, and limit the limiting arm 11 at the same time of limiting the transmission sheet 17, so as to further improve the self-locking ability of the first bolt 9 and improve the stability after connection;

[0060] In addition, in order to improve the stability of the connection between the limiting block 13 and the base 12, a second bolt 14 is provided inside the limiting block 13, and the outside of the second bolt 14 cooperates with the internal thread of the base 12. The second bolt 14 penetrates the limiting block 13 and is embedded in the base 12 to fix the limiting block 13. Even if the second bolt 14 is loose, it will not cause the limiting block 13 to fall off, and the restriction on the transmission plate 17 will not be directly lost:

[0061] like Figure 3 and Figure 4 As shown, both sides of the upper end of the upper outer frame 1 corresponding to the connecting sleeve 4 are provided with heat conducting sheets 5, and the two ends of the heat conducting sheets 5 are respectively welded and fixed to the inner wall of the connecting sleeve 4. After the upper outer frame 1 and the lower outer frame 2 are relatively moved for clamping, the heat conducting sheets 5 will fit the clamped circuit during the clamping process of the two connecting sleeves 4. After clamping, the circuit will squeeze the heat conducting sheets 5 and make the heat conducting sheets 5 fit the circuit, so that the heat of the circuit will be transferred to the heat conducting sheets 5, which is convenient for heat transfer and detection;

[0062] Example 2

[0063] In order to improve the thermal conductivity, the material of the thermal conductive sheet 5 is copper. The thermal conductive sheet 5 made of copper can improve the thermal conductivity.

[0064] In addition, a SAW temperature sensor 16 is disposed at the upper end of the two heat conducting sheets 5, and the outer wall of the SAW temperature sensor 16 is welded and fixed to the connecting sleeve 4 corresponding to the upper outer frame 1, and a fixing box 20 is disposed at one end between the two SAW temperature sensors 16, and the fixing box 20 is electrically connected to the SAW temperature sensor 16;

[0065] In order to facilitate the screwdriver to be inserted into the upper outer frame 1 and enable the first bolt 9 to be rotated efficiently, as shown in FIG. Figure 2 and Figure 3 As shown, a filling block 3 is provided at the upper end of the outer surface of the upper outer frame 1, and the outer portion of the filling block 3 is connected to the inner slot of the upper outer frame 1, and a magnet is attached to the upper end of the upper outer frame 1 by glue, and the magnet and the outer portion of the filling block 3 are magnetically connected.

[0066] The working principle of the above technical solution is as follows: when using the device and connecting the line, the cable to be connected is placed between the two connecting sleeves 4, the fixing rod 7 is inserted between the two sleeves 6, and the insertion rod 8 is inserted into the recessed position inside the upper outer frame 1. During the connection between the upper outer frame 1 and the lower outer frame 2, the first bolt 9 is rotated, and the rotation of the first bolt 9 produces relative movement with the inside of the nut. With the continuous rotation of the first bolt 9, the two connecting sleeves 4 are fitted together. During the fitting process, the heat conducting sheet 5 will bend and adapt to the clamped line. The rotation of the first bolt 9 will bring The movable connecting block 10 rotates synchronously, and the rotation of the connecting block 10 will push and squeeze the limiting arm 11. The resilience of the spring coil 19 will actively make the limiting arm 11 continue to fit and limit the connecting block 10. After the two connecting sleeves 4 are rotated to fit tightly, the limiting block 13 is stuck at the upper end of the outside of the base 12. When the limiting block 13 is installed, it will be embedded in the recessed position inside the transmission plate 17 through the limiting strip 18. The second bolt 14 rotates through the limiting block 13 and is embedded in the base 12, fixing the limiting block 13 and further locking the transmission plate 17 and the limiting arm 11.

[0067] To further understand the content of the present invention, please refer to Figure 8 , this embodiment provides the following technical solutions:

[0068] The intelligent self-locking overhead line connection device also includes a temperature monitoring system built into the fixing box 20, and the temperature monitoring system includes a SAW temperature sensor detection module, a SAW antenna module, a communication protocol conversion module, a microcontroller module, a data replication storage module and a power management module, wherein:

[0069] SAW temperature sensor detection module, the SAW temperature sensor detection module is installed inside the SAW temperature sensor 16, and is used to accurately measure the temperature. The SAW temperature sensor detection module can sense the temperature changes inside the connection device or the surrounding environment, and convert the temperature information into a recognizable electrical signal or other forms of signals through surface acoustic wave technology. For overhead line connection devices, excessively high temperature may indicate potential faults such as line overload and poor contact. The SAW temperature sensor detection module can detect temperature anomalies in a timely manner and prevent safety issues such as fire and line damage. By long-term monitoring of temperature data, the operating performance of the overhead line connection device can be evaluated, and the temperature change law under different working conditions can be understood, providing a basis for optimizing the device design and operating parameters;

[0070] SAW antenna module, the SAW antenna module is installed at the welding position around the SAW temperature sensor 16, and is responsible for receiving and sending signals related to the SAW temperature sensor detection module. It can transmit the detected temperature signal to other devices wirelessly, or receive instructions and other information sent by external devices. According to the characteristics of SAW technology, the SAW antenna module can select a suitable operating frequency to ensure effective transmission and reception of signals and avoid signal interference. The SAW antenna module enables data exchange between the temperature sensor detection module and external devices, reducing the complexity of wiring. The SAW antenna module can remotely transmit the temperature data of the overhead line connection device to the monitoring center, which is convenient for operation and maintenance personnel to timely understand the operating status of the device and realize remote monitoring and management;

[0071] The communication protocol conversion module is used to convert the communication protocol used by the SAW antenna module into a protocol that can be recognized by other devices, as different devices may use different communication protocols. It can convert the data format, for example, convert the data in a specific format transmitted by the SAW temperature sensor detection module into a universal format so that it can be transmitted and shared between different devices. In a complex intelligent overhead line connection device system, the communication protocol conversion module can improve the compatibility between different devices and ensure that the SAW temperature sensor detection module and the SAW antenna module can communicate smoothly with other devices.

[0072] The microcontroller module is used to process the temperature data transmitted by the SAW temperature sensor detection module, such as filtering, amplification, digitization and other operations, to improve the accuracy and availability of the data. According to the preset logic rules, it can determine whether the temperature data is abnormal, such as whether it exceeds the safe temperature range, whether there is abnormal temperature fluctuation, etc. As the core control unit, it can coordinate the work between the SAW temperature sensor detection module and the SAW antenna module to ensure the normal operation of the entire system;

[0073] The data replication and storage module is used to replicate and store the data transmitted by the SAW antenna module. Local storage can facilitate the subsequent unified retrieval of data, and the data backup can improve the data preservation effect; the power management module is used to: reasonably allocate power to the SAW temperature sensor detection module and the SAW antenna module to ensure that each module can obtain a stable power supply. According to the operating status of the device, such as when the temperature is stable and no frequent monitoring is required, the power management module can reduce the power supply of certain modules to achieve energy saving, provide a stable power supply for the entire intelligent overhead line connection device system, and prevent abnormal module operation due to power supply fluctuations, especially for the SAW temperature sensor detection module and the SAW antenna module that have high requirements for power supply stability. Through energy-saving control, unnecessary energy consumption can be reduced, the heat generation of the device can be reduced, and the service life of the device can be extended.

[0074] Preferably, it also includes an auxiliary temperature monitoring system for monitoring the temperature rise of the overhead line, and the auxiliary temperature monitoring system includes:

[0075] The ambient temperature sensor includes a plurality of ambient temperature sensors fixedly arranged at intervals on the outer wall of the upper outer frame 1 or the lower outer frame 2 at the monitoring node of the overhead line, and is used to obtain the ambient temperature value at the monitoring node. Each ambient temperature sensor and the monitoring node form a one-to-one matching identifier, and the position of the corresponding monitoring node can be quickly located through the ambient temperature sensor;

[0076] Cruise UAV, infrared UAV is equipped with GPS positioning module and infrared thermal imaging module. The infrared thermal imaging module is used to obtain infrared images of monitoring nodes during the cruise process, and the GPS positioning module is used to obtain the location information of each monitoring node during the cruise;

[0077] The data acquisition module is used to collect the real-time temperature values ​​detected by each ambient temperature sensor, as well as the position information and infrared images of each monitoring node obtained by the cruise drone during the cruise process;

[0078] The imaging modeling unit uses 3D imaging technology to integrate the real-time temperature values ​​and location information of each monitoring stage, as well as infrared images, into a three-dimensional virtual scene map.

[0079] A fault monitoring module is used to monitor the ambient temperature value at each monitoring node. When the ambient temperature value exceeds a preset ambient temperature threshold, the corresponding monitoring node is identified as a suspected fault monitoring node.

[0080] The fault location module obtains the information of each suspected fault monitoring node, locates the corresponding suspected fault monitoring node in the three-dimensional virtual scene graph, and renders it in red;

[0081] The first fault notification module notifies the user of the information of the suspected fault monitoring node through the system alarm screen, sound effect, action trigger, E-mail, and text message.

[0082] The principle and effect of the above technical solution are as follows: since temperature changes have a significant impact on the safety of overhead lines, and the temperature changes are not only caused by the heat generated by the lines in the overhead lines during operation, the ambient temperature also has a relatively large impact. For example, in cold winters, climate changes will quickly eliminate the heat emitted by the lines themselves, and in hot summers, the external ambient temperature may increase the operating temperature of the lines. The setting of the ambient temperature sensor can assist in monitoring the ambient temperature when judging the operating temperature of the overhead lines. Since overhead lines are generally long, the setting of ambient temperature sensors is generally not particularly dense. Usually, different monitoring nodes are set on the overhead lines and fixed on the outer wall of the upper outer frame 1 or the lower outer frame 2, so as to monitor the environment closest to the overhead lines. Temperature; The GPS positioning module on the cruise drone quickly obtains the location information of each monitoring node. If a monitoring node fails, it can be quickly located, which is convenient for supervision, maintenance and repair; the infrared thermal imaging module can obtain infrared images of the monitoring node location, which is convenient for integrating the real-time temperature values ​​and location information of each monitoring stage and the infrared image into a three-dimensional virtual scene map through 3D imaging technology. The 3D imaging technology adopts the currently commonly used imaging technology. The purpose of imaging is to establish a virtual scene map to facilitate user management and rapid positioning. When the ambient temperature exceeds the ambient temperature threshold, it is quickly located through the fault location module and notified in time through the first fault notification module. The setting of the ambient temperature threshold generally takes into account the local climate and the environmental tolerance temperature value of the overhead line.

[0083] The technical effect of the above technical solution is: by considering the monitoring of ambient temperature, and binding the position and temperature value of the monitoring nodes of the entire overhead line in the three-dimensional virtual scene diagram, when the monitored ambient temperature value may affect the safety of the overhead line, it is timely located and notified, and it is identified as a suspected fault monitoring node, which is convenient for staff to track and investigate, and improves safety. Users are notified by system alarm screen, sound effect, action trigger, E-mail, and text message, which improves the effectiveness of notification and avoids the alarm information being missed.

[0084] Furthermore, after determining the suspected fault monitoring node, it is necessary to further check whether there is a real safety problem in the overhead line. According to the location of the suspected fault monitoring node, the overhead line between the previous monitoring node and the next monitoring node is located on both sides, set as the line to be detected, and obtain the line surface temperature value t detected by all SAW temperature sensors 16 on the line to be detected. i ,

[0085] Calculate the average line surface temperature value T of the line to be tested according to the following formula c :

[0086]

[0087] Wherein, n is the number of all SAW temperature sensors 16 on the circuit to be detected;

[0088] Obtain the conductor current value and conductor resistance value of the line to be tested, and calculate the steel core temperature value of the line using the following formula:

[0089]

[0090] Among them, T s is the steel core temperature of the line, I is the conductor current of the line, R is the conductor resistance of the line, λ is the radial thermal conductivity, D 1 is the steel core diameter of the line, and D is the steel core aluminum stranded wire diameter of the line. The steel core diameter and the steel core aluminum stranded wire diameter of the line are obtained by measurement. Generally, the size of the line will be pre-stored before installation, and the relevant information can be retrieved when it is used. The radial thermal conductivity belongs to the basic attribute information of the line. After the corresponding line specifications are determined, the corresponding radial thermal conductivity can be obtained. The conductor current value and conductor resistance value of the line can be obtained by measurement;

[0091] When the calculated steel core temperature value exceeds the preset steel core safety temperature threshold, it is judged that there is a safety hazard in the operating temperature of the line to be detected, and the line to be detected is identified as a fault monitoring line. The corresponding fault monitoring line is located in the three-dimensional virtual scene diagram and rendered yellow; at the same time, the fault monitoring line information is notified to the user through the system alarm screen, sound effect, action trigger, E-mail, and SMS through the second fault notification module;

[0092] When the line to be detected is determined to be a fault monitoring line, the overhead lines between the previous monitoring node and the next monitoring node adjacent to the line to be detected are further monitored and determined based on the monitoring node until all overhead lines with faults are determined.

[0093] The principle and effect of the above technical solution are as follows: after determining the suspected fault monitoring node, it is necessary to further investigate the actual temperature conditions of the adjacent overhead lines. At this time, since the SAW temperature sensor 16 is installed at the position closest to the line inside the overhead line connection device, the line surface temperature value can be obtained through the SAW temperature sensor 16. Since it is necessary to comprehensively consider the temperature values ​​of each position point when investigating the temperature conditions of a section of the line to be detected, the line surface temperature values ​​monitored by all the SAW temperature sensors 16 in the line to be detected are averaged to obtain the average line surface temperature value of the section of the line to be detected. Under normal circumstances, the distance between the two monitoring nodes is not particularly long, so it is feasible to calculate the average value. The steel core temperature value of the line is calculated by combining the average line surface temperature value with the conductor current value and conductor resistance value of the line to be detected, as well as the steel core diameter and steel core aluminum stranded wire diameter of the line. The steel core temperature value of the line can most directly reflect whether the temperature condition on the line to be detected is too high or too low. Compared with monitoring the ambient temperature, it is more accurate and reliable to evaluate the safety hazards of overhead lines.

[0094] When the line to be detected is determined to be a fault monitoring line, the monitoring node continues to monitor and judge the overhead lines between the previous monitoring node and the next monitoring node adjacent to the line to be detected until all overhead lines with faults are determined. This troubleshooting method is more accurate and targeted, and can quickly determine the overhead lines with faults. Usually, when a section of the line to be detected has a temperature fault or hidden danger, the adjacent lines are likely to have the same problem. Therefore, this troubleshooting method is more scientific, and there is no need to check all the overhead lines at once, which improves the troubleshooting efficiency. Users are notified through system alarm screens, sound effects, action triggers, E-mails, and text messages to improve the effectiveness of notifications and avoid missed alarm information.

[0095] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0096] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. An intelligent self-locking overhead line connection device, comprising an upper outer frame (1), a lower outer frame (2) being provided at the lower end of the upper outer frame (1), and a connection sleeve (4) being welded inside the lower outer frame (2) and the upper outer frame (1), characterized in that: A first bolt (9) is rotatably provided at the front and rear ends of the interior of the corresponding connecting sleeve (4) of the upper outer frame (1), a connecting block (10) is welded around the exterior of the first bolt (9), a bracket (15) is provided on one side of the exterior of the connecting block (10), a limiting arm (11) rotatably connected via a transmission sheet (17) is provided inside the bracket (15), the bracket (15) and the connecting sleeve (4) corresponding to the upper outer frame (1) are welded and fixed via a base (12), a limiting block (13) connected via a slot is provided at the upper end of the base (12), a limiting strip (18) is provided at the lower end of the limiting block (13) facing the upper end of the interior of the transmission sheet (17), and a limiting arm (11) is provided inside the transmission sheet (17). A groove is provided, and the groove position of the transmission plate (17) is connected to the external slot of the limiting strip (18); both sides of the upper end of the upper outer frame (1) corresponding to the connecting sleeve (4) are provided with heat conducting plates (5), and the two ends of the heat conducting plates (5) are respectively welded and fixed to the inner wall of the connecting sleeve (4); the material of the heat conducting plates (5) is copper; the upper ends of the two heat conducting plates (5) are provided with SAW temperature sensors (16), and the outer walls of the SAW temperature sensors (16) are welded and fixed to the connecting sleeve (4) corresponding to the upper outer frame (1); and a fixing box (20) is also included at one end between the two SAW temperature sensors (16); the fixing box (20) has a built-in temperature monitoring system, and the temperature monitoring system comprises: SAW temperature sensor detection module: used to accurately measure temperature. The SAW temperature sensor detection module senses the temperature changes inside the connected device or the surrounding environment, and converts the temperature information into a recognizable signal through surface acoustic wave technology; SAW antenna module: responsible for receiving and sending signals related to the SAW temperature sensor detection module, transmitting the detected temperature signal wirelessly, or receiving instructions sent by external devices; Communication protocol conversion module: used to convert the communication protocol used by the SAW antenna module into a recognizable protocol, convert the data format, and transmit and share it between different devices; Microcontroller module: used to process the temperature data transmitted by the SAW temperature sensor detection module and determine whether the temperature data is abnormal according to the preset logic rules; Data replication and storage module: used to replicate and store data transmitted by the SAW antenna module. Local storage facilitates subsequent unified retrieval of data. Power management module: used to distribute power to the SAW temperature sensor detection module and SAW antenna module to ensure that each module can obtain a stable power supply.

2. The intelligent self-locking overhead line connection device according to claim 1 is characterized in that: A second bolt (14) is provided inside the limiting block (13) and penetrates therethrough, and the outside of the second bolt (14) is engaged with the internal thread of the base (12).

3. The intelligent self-locking overhead line connection device according to claim 1 is characterized in that: A spring ring (19) is arranged around the outside of the position where the transmission plate (17) passes through the bracket (15), and two ends of the spring ring (19) are respectively welded and fixed to the bracket (15) and the transmission plate (17).

4. The intelligent self-locking overhead line connection device according to claim 1, characterized in that: A nut that is threadably matched with the first bolt (9) is welded between the connecting sleeve (4) corresponding to the lower outer frame (2) and facing the interior of the lower outer frame (2).

5. The intelligent self-locking overhead line connection device according to claim 1, characterized in that: Also included is an auxiliary temperature monitoring system for monitoring the temperature rise of the overhead line, the auxiliary temperature monitoring system comprising: Ambient temperature sensors, comprising a plurality of ambient temperature sensors, fixedly arranged at intervals on the outer wall of an upper outer frame (1) or a lower outer frame (2) at a monitoring node of an overhead line, for obtaining an ambient temperature value at the monitoring node, each ambient temperature sensor and a monitoring node forming a one-to-one matching identifier, and a plurality of SAW temperature sensors (16) being arranged between two adjacent monitoring nodes; Cruise UAV, infrared UAV is equipped with GPS positioning module and infrared thermal imaging module. The infrared thermal imaging module is used to obtain infrared images of monitoring nodes during the cruise process, and the GPS positioning module is used to obtain the location information of each monitoring node during the cruise; The data acquisition module is used to collect the real-time temperature values ​​detected by each ambient temperature sensor, as well as the position information and infrared images of each monitoring node obtained by the cruise drone during the cruise process; The imaging modeling unit uses 3D imaging technology to integrate the real-time temperature values ​​and location information of each monitoring stage, as well as infrared images, into a three-dimensional virtual scene map. A fault monitoring module is used to monitor the ambient temperature value at each monitoring node. When the ambient temperature value exceeds a preset ambient temperature threshold, the corresponding monitoring node is identified as a suspected fault monitoring node. The fault location module obtains the information of each suspected fault monitoring node, locates the corresponding fault monitoring node in the three-dimensional virtual scene graph, and renders it in red; The first fault notification module notifies the user of the information of the suspected fault monitoring node through the system alarm screen, sound effect, action trigger, E-mail, and SMS.

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