A power network transmission line cable detection device and system

Abstract

The present invention discloses a power network transmission line cable detection device and a system thereof, which are composed of a cable detection and positioning upper structure and a lower structure. The lower structure includes an early warning detection and positioning lower body, a side box, a wind wheel, a variety of gears, a worm, a worm ring ratchet and other transmission components, as well as high-endurance airbags, telescopic air pipes, jet hoods and other related components; in terms of jet weight reduction, the wind wheel captures wind energy, and through multi-stage transmission, the piston pumping rod is made to reciprocate to inflate the high-endurance airbag, and the gas is ejected from the jet hood to generate an upward thrust, thereby reducing the gravity burden of the detection device on the cable; in terms of deicing, the expansion and contraction of the high-endurance airbag drives the hydraulic piston rod to move, and the screw rod is driven to rotate through components such as liquid pipes and connecting pipes, driving the ice-breaking hammer to hit the ice on the cable surface, and the ice is removed in time to ensure stable power transmission; the detection device and its system can effectively solve the line safety problems caused by traditional detection devices and improve the level of power network detection and maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of power network transmission line detection, and in particular to a power network transmission line cable detection device and a system thereof. Background Art

[0002] In actual operation, distribution networks are prone to lightning strikes, ice cover, tree obstructions, and irregular power usage by users due to environmental and human factors. These factors contribute to numerous line faults, with single-phase ground fault rates exceeding 80%. Furthermore, distribution lines are complex, and fault points are often hidden, making manual detection difficult and requiring long processing cycles. This poses challenges for power supply reliability. To address the challenges of fault detection and location in traditional distribution networks, improve the efficiency and accuracy of fault handling, ensure stable grid operation, and meet the needs of smart grid development, a power transmission line and cable detection and location system has been proposed. The existing power transmission line and cable detection and location system primarily consists of a detection terminal (a power transmission line and cable detection device) and a detection center. Using distributed traveling wave detection technology, it provides fault detection and location, as well as early warning capabilities. The detection terminal, resembling a square box, is rainproof, moisture-proof, corrosion-resistant, earthquake-resistant, lightning-proof, and electromagnetic interference-resistant. Installed on the conductors of overhead distribution lines using a clamping mechanism, it can detect and collect high-frequency fault currents and traveling wave currents, as well as ground electric field signals, generated by line faults in real time, and then upload these signals to the detection center via a wireless network.

[0003] The current power system's online transmission cable detection devices generally use a snap-on installation structure. Its technical characteristics lead to the following two structural problems:

[0004] The mass of the detection device itself is directly transmitted to the cable body and tower structure through the fixture, which forms a continuous static load on its bearing system under normal operating conditions. According to actual engineering measurement data, a single set of standard detection devices (including sensor group, energy supply module and communication unit) can generate an additional load of 4.6-7.2kg, which will significantly affect the safety margin of large-span, high-tension transmission lines. In addition, under severe weather conditions in winter, the air turbulence generated at the bottom of the device makes it easier for supercooled water droplets to adhere, forming ice ridges with a length of up to 1.5m. When the cable body and the detection device are covered with ice at the same time, a synergistic weight-increasing effect will be produced. Under typical working conditions (ice thickness of 15mm), the ice load on a single tower will increase by an additional 2.3-3.8 tons, greatly increasing the risk factor of cable breakage.

[0005] To this end, a power network transmission line cable detection device and system thereof are proposed. Summary of the Invention

[0006] The object of the present invention is to provide a power network transmission line cable detection device and system thereof to solve the problem of the power network transmission line cable detection device proposed in the above background technology that increases the additional load on cables and towers.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a power network transmission line cable detection device, comprising: a cable detection and positioning upper structure, the center position of the lower surface of which is provided with a half-line hole for cable access;

[0008] The cable detection and positioning lower structure has a half-line hole on the upper surface corresponding to the line hole of the cable detection and positioning upper structure, which is matched to form a complete cable hole, and can be connected with the cable detection and positioning upper structure and fixed on the cable surface with bolts. The cable detection and positioning lower structure includes an early warning detection and positioning lower body, and the front and rear sides of the early warning detection and positioning lower body are connected to the side box by bolts. The upper surface of the side box is connected to the wind wheel with the bearing seat, and the lower end of the wind wheel's rotating shaft is fixed to the active bevel gear rotatably arranged inside the side box. The lower side of the active bevel gear is fixed to the driven bevel gear. The bevel gears are engaged for transmission, and the rotating shaft of the driven bevel gear cooperates with the coupling to be connected with the worm which is rotatably arranged inside the lower body of the early warning detection and positioning. The upper side of the worm is worm-geared with the worm ring ratchet which is rotatably arranged inside the lower body of the early warning detection and positioning. The rotating shaft end of the worm ring ratchet cooperates with the coupling to be connected with the camshaft body which is rotatably arranged inside the lower body of the early warning detection and positioning. Several piston pumping rods are provided on the lower side of the camshaft body in rolling contact. The rod body of the piston pumping rod extends downward and is inserted into the telescopic air tube fixed inside the high-resistance airbag through the lower body of the early warning detection and positioning, and penetrates into the telescopic air tube. The cam is provided with a plurality of airtight seals at the bottom of the airbag, and a plurality of airtight seals are provided at the bottom of the airbag. The seal is provided with a plurality of seals at the bottom of the airbag, and a plurality of seals are provided at the bottom of the airbag. The seal is provided with a plurality of seals at the bottom of the airbag. The seal is provided with a plurality of seals at the bottom of the airbag. The seal is provided with a plurality of seals at the bottom of the airbag. The seal is provided with a plurality of seals at the bottom of the airbag. The seal is provided with a plurality of seals at the bottom of the airbag. The upper end of the piston rod extends through the liquid pipe and is fixed to the upper wall of the high-resistance airbag, and a liquid hole of a specified aperture is opened at the axis of the hydraulic piston rod, and the liquid holes of the two hydraulic piston rods are fixedly connected at the upper end through a connecting pipe, one end of the connecting pipe extends through the high-resistance airbag and is connected to the ice-breaking liquid path opened on the left and right sides of the lower body of the early warning detection and positioning. A screw rod is provided in the sliding seal inside the expansion cross tube above the ice-breaking liquid path, and one end of the screw rod spirally passes through the butterfly screw hole plate fixed at the end of the ice-breaking liquid path to the outside of the lower body of the early warning detection and positioning, and is fixed to the ice-breaking hammer arranged under the cable.

[0009] Preferably, the spiral direction of the worm is adjusted according to the direction in which the camshaft body rotates forward or backward in the same direction by the worm ring ratchet.

[0010] Preferably, the worm ring ratchet consists of a ratchet and a worm ring rotatably sleeved on the ratchet, and the ratchet is arranged to rotate in the same direction under force, wherein the rotating shafts of the ratchet extend toward each other along the direction of the cable.

[0011] Preferably, the upper end of the piston pumping rod is provided with a rolling ball in cooperation with the ball seat, and the piston pumping rod is integrally provided with a limited sleeve plate in the middle position of the rod body, and the lower side of the rod body sleeve plate is provided with an air pumping spring whose upper end is fixed to the sleeve plate, and the air pumping spring is located in a compression chamber pre-opened inside the lower body of the early warning detection positioning, and the lower end of the air pumping spring is fixed to the bottom wall of the compression chamber.

[0012] Preferably, the telescopic air tubes are arranged in a corresponding number to the piston pumping rods, and the tube body of the telescopic air tube is composed of a solid tube fixed to the upper and lower inner walls of the high-resistance airbag and a telescopic tube that connects the two solid tubes as a whole.

[0013] Preferably, the lower end of the air intake one-way valve penetrates into a groove pre-opened on the bottom surface of the high-resistance airbag and open to the outside world, and a protective cover is fixedly provided on the bottom surface of the high-resistance airbag at the position corresponding to the air intake one-way valve to protect and isolate the air intake one-way valve.

[0014] A power network transmission line cable detection system mainly consists of a cable detection and positioning upper structure, a cable detection and positioning lower structure and a detection center. Among them, the cable detection and positioning upper structure and the cable detection and positioning lower structure are installed on the cables of the overhead distribution line using a wire clamping structure. They can detect and collect high-frequency fault current and fault traveling wave current and ground electric field signals generated by line faults in real time, and upload them to the detection center via a wireless network.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention can convert the kinetic energy of airflow into the reciprocating motion of the piston pumping rod through the arrangement of the wind wheel, the active bevel gear, the driven bevel gear, the worm, the worm ring ratchet, the camshaft body, the piston pumping rod, the pumping spring, the telescopic air pipe, the inlet one-way air valve, the outlet one-way air valve, the high-resistance airbag and the jet cover, and then compress the air to inflate the high-resistance airbag. When the air pressure in the high-resistance airbag reaches the pressure relief range of the jet cover pressure relief valve, the gas is ejected from the four corners to generate an upward thrust. In this way, the air thrust effect is utilized to intermittently reduce the gravity burden added to the cable after the installation of the power network transmission line cable detection device, avoid the continuous static load on the cable and the pole tower structure caused by the mass of the detection device body, and effectively improve the safety margin of the large-span and high-tension transmission line. In addition, the airflow generated by the jet at the bottom of the device, while changing the turbulent state of the air, also keeps the high-resistance airbag in an active state, which can reduce the adhesion of supercooled water droplets to the bottom of the device and avoid the formation of ice ridge structure. This reduces the synergistic weight-increasing effect caused by ice covering both the cable body and the detection device, reduces the increase in ice load on a single tower, and significantly reduces the risk of cable breakage.

[0017] 2. The present invention is equipped with a high-resistant airbag, a hydraulic piston rod, a liquid pipe, a restoring spring, a connecting pipe, an ice-breaking liquid path, a screw rod, a screw hole plate and an ice-breaking hammer. The expansion and contraction of the high-resistant airbag can drive the hydraulic piston rod to slide up and down in the liquid pipe. The antifreeze safety liquid in the liquid pipe is sucked and compressed to drive the screw rod to rotate and drive the ice-breaking hammer to move, thereby hitting the ice and snow attached to the cable surface. This active de-icing method can promptly remove the ice on the cable surface near the detection device, reduce the burden on the cable after ice covering, reduce the risk of line failure caused by ice covering, ensure the stability of power transmission, save manpower and material costs, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural view of the present invention.

[0019] Figure 2 The structural section of the present invention Figure 1 And partial enlarged view.

[0020] Figure 3 The structural section of the present invention Figure 2 .

[0021] Figure 4 This is a schematic diagram of the early warning detection and positioning lower body, the internal structure of the side box and the high-durability airbag of the present invention.

[0022] Figure 5 This is a schematic diagram of the internal structure of the early warning detection positioning lower body and side box of the present invention.

[0023] Figure 6 This is a cross-sectional view and a partially enlarged view of the high-resistance airbag after flipping over of the present invention.

[0024] In the picture:

[0025] 1. Cable detection and positioning superstructure;

[0026] 2. Cable detection and positioning substructure;

[0027] 21. Early warning detection and positioning lower body; 211. Worm; 212. Worm ring ratchet; 213. Camshaft body; 214. Piston pump rod; 215. Pump spring; 216. Ice-breaking fluid circuit; 217. Screw rod; 218. Ice-breaking hammer; 219. Screw hole plate;

[0028] 22, side box; 221, wind wheel; 222, driving bevel gear; 223, driven bevel gear;

[0029] 23. High-durability airbag; 231. Telescopic air tube; 2311. Inlet one-way valve; 2312. Outlet one-way valve; 232. Protective cover; 233. Jet cover; 234. Liquid pipe; 2341. Restoration spring; 235. Hydraulic piston rod; 2351. Connecting pipe. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figures 1 to 6 The present invention provides a technical solution for a power network transmission line cable detection device and system thereof:

[0032] A power network transmission line cable detection device, comprising:

[0033] Cable detection and positioning upper structure 1, the center position of the lower surface is provided with a half-line hole for cable access;

[0034] The cable detection and positioning lower structure 2 also has a half-wire hole on the upper surface corresponding to the wire hole of the cable detection and positioning upper structure 1, which is matched to form a complete cable hole, and can be connected with the cable detection and positioning upper structure 1 by bolts and fixed on the cable surface.

[0035] The cable detection and positioning lower structure 2 includes an early warning detection and positioning lower body 21. The left position of the front side and the right position of the rear side of the early warning detection and positioning lower body 21 are both connected to a side box 22 by bolts. The side box 22 is a circular arch box, and is rotatably connected to the wind wheel 221 with a bearing seat at the center position of the upper surface, and the rotating shaft of the wind wheel 221 extends downward and penetrates into the interior of the side box 22 and is fixed to the active bevel gear 222 rotatably arranged inside the side box 22. The lower side of the active bevel gear 222 inside the side box 22 is meshed with the driven bevel gear 223 that is also rotatably arranged inside the side box 22 for transmission. The rotating shaft of the driven bevel gear 223 extends straight toward the direction of the early warning detection and positioning lower body 21, and is rotated by the side box 22. After passing through the part, it extends into the interior of the early warning detection and positioning lower body 21, and cooperates with the coupling to connect with the worm 211 that is rotatably arranged just below the wire hole inside the early warning detection and positioning lower body 21, to achieve coaxial linkage with the driven bevel gear 223, and the spiral direction of the worm 211 is adjusted according to the worm ring ratchet 212 to adjust the direction of the camshaft body 213 to rotate forward or backward in the same direction, and the upper side of the worm 211 and the worm ring ratchet 212 that is rotatably arranged inside the early warning detection and positioning lower body 21 perform spiral transmission, and the worm ring ratchet 212 is composed of a ratchet and a worm ring rotatably sleeved on the ratchet, and the ratchet is set to rotate forward or backward in the same direction, wherein the rotating shaft of the ratchet extends toward each other along the direction of the cable, and the rotating shaft end cooperates with the coupling and the rotating setting The camshaft body 213 inside the early warning detection and positioning lower body 21 is connected and cooperates to drive the camshaft body 213 to rotate. A plurality of piston pumping rods 214 are provided in rolling contact with the lower side of the camshaft body 213, and the piston pumping rods 214 are arranged in a radial array along the camshaft body 213. The upper end of the piston pumping rod 214 is provided with a rolling ball in cooperation with the ball seat, and the piston pumping rod 214 is provided with a limited sleeve in the middle position of the rod body, and the lower side of the rod body sleeve is provided with an air spring 215 whose upper end is fixed to the sleeve. The air spring 215 is in a compression chamber pre-opened inside the early warning detection and positioning lower body 21, and the lower end of the air spring 215 is fixed to the bottom wall of the compression chamber, and the piston pumping rod 214 is used to After the downward movement, the piston pump rod 214 is quickly reset. The rod body of the piston pump rod 214 extends downward and is inserted into the telescopic air tube 231 fixed inside the high-resistance air bag 23 by the early warning detection positioning lower body 21, and a piston is integrally provided at one end of the telescopic air tube 231. The telescopic air tube 231 is provided in a corresponding number to the piston pump rod 214. The tube body of the telescopic air tube 231 consists of a solid tube fixed to the upper and lower inner walls of the high-resistance air bag 23 and a telescopic tube that connects the two solid tubes as a whole. The lower end and side of the solid tube on the lower side are sealed and installed with an air inlet one-way valve 2311 and an air outlet one-way valve 2312. Among them, the lower end of the air inlet one-way valve 2311 penetrates into a groove body pre-opened on the bottom surface of the high-resistance air bag 23 and open to the outside world.The bottom surface of the high-resistance airbag 23 is fixedly provided with a protective cover 232 at the position corresponding to the intake check valve 2311 to protect and isolate the intake check valve 2311. The four corners of the bottom surface of the high-resistance airbag 23 are connected to the jet cover 233 by bolts. The interior of the high-resistance airbag 23 is provided with a through hole at the position of the jet cover 233, and a pressure relief valve is installed at the position of the through hole.

[0036] When the airflow passes through the wind wheel 221, the wind wheel 221 rotates under the drive of the airflow, and coaxially drives the active bevel gear 222, and the active bevel gear 222 drives the driven bevel gear 223, and the driven bevel gear 223 drives the worm 211 to rotate through the coupling, and the worm 211 drives the worm ring ratchet 212. If the two worm ring ratchet wheels 212 rotate in opposite directions, they will idle. If one or both rotate in the same direction, it will drive the camshaft body 213. When the camshaft body 213 rotates, it intermittently pushes the piston pumping rod 214 according to the cam arc, and cooperates with the pumping spring 215 to make it reciprocate up and down. When the piston pumping rod 214 moves up and down, the lower end piston moves along the wall of the telescopic air tube 231, compressing the air in the tube when moving downward, and after reaching the pressure relief range of the outlet one-way air valve 2312, the gas is discharged into the high-resistance air bag 23; when moving upward, negative pressure appears in the tube. After reaching the specified range, the external air pressure causes the air inlet one-way air valve 2311 to open and replenish air, and the air pressure in the high-resistance air bag 23 increases. When reaching the pressure relief range of the jet cover 233, the gas is ejected from the four corners, reducing the gravity burden added to the cable by the cable detection device. This process continues with the reciprocating motion of the piston pumping rod 214.

[0037] In summary, through the arrangement of the wind wheel 221, the active bevel gear 222, the driven bevel gear 223, the worm 211, the worm ring ratchet 212, the camshaft body 213, the piston pumping rod 214, the pumping spring 215, the telescopic air pipe 231, the air inlet one-way valve 2311, the air outlet one-way valve 2312, the high-resistance air bag 23 and the jet cover 233, the kinetic energy of the air flow can be converted into the reciprocating motion of the piston pumping rod 214, and then the compressed air is used to inflate the high-resistance air bag 23. When the air pressure in the high-resistance air bag 23 reaches the pressure relief valve of the jet cover 233, the pressure relief valve 233 of the high-resistance air bag 23 is released. During the interval, gas is ejected from the four corners, generating an upward thrust. This gas thrust effect intermittently reduces the added gravity burden on the cables after the installation of the power network transmission line cable detection device, preventing the mass of the detection device from continuously forming a static load on the cables and tower structures, and effectively improving the safety margin of large-span, high-tension transmission lines. In addition, the airflow generated by the jet at the bottom of the device not only changes the air turbulence state, but also keeps the high-resistance airbag 23 in an active state, which can reduce the adhesion of supercooled water droplets to the bottom of the device and avoid the formation of ice ridges. This reduces the synergistic weight-increasing effect caused by the simultaneous ice coating of the cable body and the detection device, reduces the increase in ice load on the single-base tower, and greatly reduces the risk factor of line breakage.

[0038] As an embodiment of the present invention, Figure 6 As shown, two liquid pipes 234 are fixedly provided inside the high-resistance airbag 23 between the two jet covers 233 arranged at the front and rear, and a restoring spring 2341 is fixedly provided at the lower part of the liquid pipe 234, and the upper end of the restoring spring 2341 is fixed to the hydraulic piston rod 235 with a sliding seal arranged inside the liquid pipe 234, the upper end of the hydraulic piston rod 235 extends out of the liquid pipe 234 and is fixed to the upper wall of the high-resistance airbag 23, and a liquid hole of a specified aperture is opened at the axis of the hydraulic piston rod 235, and the liquid holes of the two hydraulic piston rods 235 are fixedly connected at the upper end through a connecting pipe 2351, and the connecting pipe 2351 is T The three-way pipe is a three-way pipe, and one end of the pipe extends through the high-resistant airbag 23 and is connected to the ice-breaking liquid path 216 opened on the left and right sides of the early warning detection and positioning lower body 21. The ice-breaking liquid path 216 and the cable hole are in the same plane, and the internal sliding seal of the expansion cross tube above it is provided with a screw rod 217, and one end of the screw rod 217 is spirally passed through the butterfly screw hole plate 219 fixed at the upper end of the ice-breaking liquid path 216 to the outside of the early warning detection and positioning lower body 21, and is fixed to the ice-breaking hammer 218 arranged under the cable. The ice-breaking hammer 218 can be set to any one or more combinations such as dumbbell shape, cam shape and umbrella shape according to actual needs.

[0039] When the ice is compressed, the liquid in the liquid pipe 234 acts on the piston end of the screw rod 217 through the connecting pipe 2351 and the ice-breaking liquid path 216, causing it to spirally slide outward along the inner wall of the ice-breaking liquid path 216 through the screw hole plate 219, thereby driving the ice-breaking hammer 218 to remove ice, thereby reducing the burden of ice accumulation on the cable and the workload of cleaning.

[0040] To sum up, through the arrangement of the high-resistant airbag 23, the hydraulic piston rod 235, the liquid pipe 234, the restoring spring 2341, the connecting pipe 2351, the ice-breaking liquid path 216, the screw rod 217, the screw hole plate 219 and the ice-breaking hammer 218, the expansion and contraction of the high-resistant airbag 23 can drive the hydraulic piston rod 235 to slide up and down in the liquid pipe 234, and by sucking and compressing the antifreeze safety liquid in the liquid pipe 234, the screw rod 217 is driven to rotate and the ice-breaking hammer 218 is driven to move, thereby hitting the ice and snow attached to the cable surface. This active de-icing method can promptly remove the ice on the cable surface near the detection device, reduce the burden on the cable after ice covering, reduce the risk of line failure caused by ice covering, ensure the stability of power transmission, save manpower and material costs, and improve work efficiency.

[0041] Working principle: When working, first determine the installation position and method of the power network transmission line cable detection device according to the instruction manual and technical requirements of the power network transmission line cable detection device. Generally speaking, the power network transmission line cable detection device should be installed at the key nodes of the power network transmission lines to facilitate the detection of the entire network. The installation operation is carried out in accordance with the installation instructions of the power network transmission line cable detection device, including fixing devices, connecting cables, etc. After the installation is completed, the power network transmission line cable detection device is tested and debugged to ensure that the power network transmission line cable detection device operates normally and has detection warning and fault location functions. During use, when air flows through the wind wheel 221, the wind wheel 221 will rotate driven by the air flow, and then the rotating wind wheel 221 will coaxially drive the active bevel gear 222 to rotate, and cooperate with the active bevel gear 222 to mesh and drive the driven bevel gear 223, and the rotating driven bevel gear 223 will cooperate with the coupling to coaxially drive the worm 211 to rotate, and then the rotating worm 211 will rotate and drive the upper worm ring ratchet 212. At this time, if the two worm ring ratchet wheels 212 rotate in the opposite direction of the force, the worm ring ratchet wheels 212 will idling. If one or both of them rotate in the opposite direction of the force, the worm ring ratchet wheels 212 will idling. The rotating worm ring ratchet 212 will synchronously drive the camshaft body 213 to rotate. The rotating camshaft body 213 will intermittently push the piston pumping rod 214 downward according to the arc path of the cam during the rotation process, and cooperate with the air spring 215 to make it continue to do up and down reciprocating motion. During the up and down movement of the piston pumping rod 214, the piston at its lower end will move up and down along the wall of the telescopic air tube 231. When moving down along the wall, the piston pumping rod 214 will compress the air drawn into the telescopic air tube 231, and compress it to After the specified air pressure is reached, the pressure relief range of the air outlet one-way valve 2312 is reached, and then the air outlet one-way valve 2312 will discharge the compressed gas inside the telescopic air tube 231 into the interior of the high-resistance airbag 23 to inflate the interior of the high-resistance airbag 23. When moving upward along the tube wall, as the internal space of the telescopic air tube 231 increases, the interior of the telescopic air tube 231 will have a negative pressure environment in the absence of gas material replenishment. Then, after the negative pressure environment reaches the specified range, the external air pressure will force the air inlet one-way valve 2311 to open, and then the gas will pass through the air inlet one-way valve 231. 2311 enters the interior of the telescopic air tube 231 for air replenishment. The air pumped into the high-resistance airbag 23 will gradually expand the high-resistance airbag 23, and the air pressure inside the high-resistance airbag 23 will increase rapidly. After the air pressure inside the high-resistance airbag 23 reaches the pressure relief range of the pressure relief valve belonging to the jet cover 233, the gas inside the high-resistance airbag 23 will be ejected downward from the four corners through the jet cover 233. In this way, the jet effect is used to intermittently reduce the gravity burden added to the cable after the power network transmission line cable detection device is installed. This process will continue when the piston pump rod 214 reciprocates.If it is winter, the high-resistance airbag 23 in the active state can also effectively reduce the problem of ice formation on the lower surface in winter, and avoid the ice accumulation of rain and snow on the lower surface of the high-resistance airbag 23. At the same time, the high-resistance airbag 23 in the expanded and retracted active state will synchronously drive the hydraulic piston rod 235 to slide up and down along the inner wall of the liquid pipe 234, and will suck and compress the antifreeze safety liquid stored in the liquid pipe 234 during the sliding process. During the suction, as the liquid pipe 234 and the hydraulic piston rod 235 move in opposite directions, while stretching the restoring spring 2341, the space inside the liquid pipe 234 will increase, and then the antifreeze safety liquid inside the ice-breaking liquid path 216 will enter the interior of the liquid pipe 234 from the hydraulic piston rod 235 through the connecting pipe 2351. As the antifreeze safety liquid is sucked into the interior of the liquid pipe 234, the interior of the ice-breaking liquid path 216 The liquid will decrease rapidly, and then the screw rod 217 will be driven by the screw hole plate 219 to rotate spirally under the action of the hydraulic pressure. During the movement, the rotating screw hole plate 219 will swing the ice-breaking hammer 218 to hit the ice and snow attached to the cable surface, thereby removing the ice on the cable surface near the power network transmission line cable detection device, thereby reducing the burden on the cable after ice is covered and reducing the workload of cleaning the cable after ice is covered. During the compression, the antifreeze safety liquid inside the liquid pipe 234 will act on the piston end of the screw rod 217 along the connecting pipe 2351 and the ice-breaking liquid path 216, and force the screw rod 217 to spirally slide outward along the inner wall of the ice-breaking liquid path 216 through the screw hole plate 219. During the rotation and sliding process of the screw rod 217, the ice-breaking hammer 218 will hit the ice and snow attached to the cable surface, thereby performing the de-icing operation.

[0042] A power network transmission line cable detection system mainly consists of a cable detection and positioning upper structure 1, a cable detection and positioning lower structure 2, and a detection center. The cable detection and positioning upper structure 1 and the cable detection and positioning lower structure 2 are installed on the cables of the overhead distribution line using a wire clamping structure. They can detect and collect high-frequency fault current and fault traveling wave current and ground electric field signals generated by line faults in real time, and upload them to the detection center via a wireless network.

[0043] Among them, the cable detection and positioning upper structure 1 and the cable detection and positioning lower structure 2 are equipped with several sensors;

[0044] Take the DS18B20 digital temperature sensor as an example. It can monitor the temperature changes of the cable caused by current transmission in real time. Once the temperature exceeds the normal range, it means there may be hidden dangers such as current overload or poor contact.

[0045] Take the SCA100T-D02 stress sensor as an example. It constantly senses external forces acting on cables, such as their own weight, wind, and ice. Once stress becomes abnormal, the system detects the risk of cables stretching, breaking, or tower tilting.

[0046] Taking the OV2710 image sensor as an example, it captures the appearance of cables and uses image recognition technology to identify whether the cables are damaged or entangled with foreign objects.

[0047] The data collected by these sensors are transmitted to the detection center in real time. After analysis and comparison, once abnormal data is found, the system will immediately issue an early warning, prompting the operation and maintenance personnel to deal with it in time, thereby effectively ensuring the stable operation of the power network transmission lines and cables.

[0048] It should be noted that the ice-breaking hammer 218 will not come into contact with the cable; the structure of the screw rod 217 and the screw hole plate 219 is similar to that of the flying fairy toy; the wind wheel 221 can be replaced with other impellers that are more suitable for use in winter.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A power network transmission line cable detection device, comprising: The cable detection and positioning upper structure (1) has a half-line hole at the center of the lower surface for cable access; The cable detection and positioning lower structure (2) is also provided with a half-line hole on the upper surface corresponding to the line hole of the cable detection and positioning upper structure (1) to form a complete cable hole, and can be connected to the cable detection and positioning upper structure (1) and fixed on the cable surface with bolts, and is characterized by: The cable detection and positioning lower structure (2) comprises an early warning detection and positioning lower body (21), and side boxes (22) are fixed to the front and rear sides of the early warning detection and positioning lower body (21). The upper surface of the side box (22) cooperates with the bearing seat to be rotatably connected to the wind wheel (221), and the rotating shaft of the wind wheel (221) cooperates with the driving bevel gear (222) and the driven bevel gear (223) to perform meshing transmission. The rotating shaft of the driven bevel gear (223) cooperates with the coupling to be connected to the worm (211) rotatably set inside the early warning detection and positioning lower body (21), and cooperates with the worm (211) to be rotatably set inside the early warning detection and positioning lower body (21). The worm ring ratchet (212) inside the lower body (21) performs worm gear transmission, and the rotating shaft end of the worm ring ratchet (212) cooperates with the coupling to be connected with the cam shaft body (213) rotatably set inside the early warning detection positioning lower body (21), and the lower side of the cam shaft body (213) is provided with a plurality of piston pumping rods (214) in rolling contact, and the piston end of the piston pumping rod (214) is inserted into the telescopic air tube (231) fixed inside the high-resistance air bag (23), and the lower end and side of the telescopic air tube (231) are sealed and installed with an air inlet one-way valve (2311) and an air outlet one-way valve (2311). 312), the four corners of the bottom surface of the high-resistance airbag (23) are connected to the jet cover (233) by bolts, and two liquid pipes (234) are fixedly provided between the two jet covers (233) arranged in the front and rear of the interior of the high-resistance airbag (23), and a liquid recovery spring (2341) is fixedly provided below the interior of the liquid pipe (234), and the upper end of the liquid recovery spring (2341) is fixed to the hydraulic piston rod (235) with a sliding seal arranged inside the liquid pipe (234), and the upper end of the hydraulic piston rod (235) extends out of the liquid pipe (234) and is fixed to the upper wall of the high-resistance airbag (23), and The two hydraulic piston rods (235) have internal liquid holes fixedly connected at the upper ends through a connecting pipe (2351), and the upper ends of the connecting pipes (2351) are connected to the ice-breaking liquid paths (216) opened on the left and right sides of the early warning detection and positioning lower body (21). The expansion transverse tube above the ice-breaking liquid path (216) is provided with a spiral rod (217) for sliding sealing, and one end of the spiral rod (217) is spirally passed through a butterfly screw hole plate (219) fixed at the upper end of the ice-breaking liquid path (216) to the outside of the early warning detection and positioning lower body (21), and is fixed to the ice-breaking hammer (218) provided below the cable.

2. The power network transmission line cable detection device according to claim 1, characterized in that: The spiral direction of the worm (211) is adjusted according to the direction in which the cam shaft (213) rotates forward or backward in the same direction as the worm ring ratchet (212).

3. The power network transmission line cable detection device according to claim 1, characterized in that: The worm ring ratchet (212) is composed of a ratchet and a worm ring rotatably sleeved on the ratchet, and the ratchet is arranged to rotate in the same direction under force, wherein the rotating shafts of the ratchet extend toward each other along the cable direction.

4. The power network transmission line cable detection device according to claim 1, characterized in that: The upper end of the piston pumping rod (214) is provided with a rolling ball in cooperation with the ball seat, and the piston pumping rod (214) is provided with a limited sleeve in the middle position of the rod body, and the lower side of the rod body sleeve is provided with an air pumping spring (215) whose upper end is fixed to the sleeve, and the air pumping spring (215) is located in a compression chamber pre-opened inside the early warning detection positioning lower body (21), and the lower end of the air pumping spring (215) is fixed to the bottom wall of the compression chamber.

5. The power network transmission line cable detection device according to claim 1, characterized in that: The telescopic air tubes (231) are provided in a corresponding number to the piston pumping rods (214), and the tube body of the telescopic air tube (231) is composed of a solid tube fixed to the upper and lower inner walls of the high-resistance air bag (23) and a telescopic tube that connects the two solid tubes in one body.

6. The power network transmission line cable detection device according to claim 1, characterized in that: The lower end of the air intake one-way valve (2311) penetrates into a groove body pre-opened on the bottom surface of the high-resistance airbag (23) and open to the outside world, and a protective cover (232) for protecting and isolating the air intake one-way valve (2311) is fixedly provided on the bottom surface of the high-resistance airbag (23) at a position corresponding to the air intake one-way valve (2311), and a through hole is opened inside the high-resistance airbag (23) at the position of the jet cover (233), and a pressure relief valve is installed at the position of the through hole.

7. A power network transmission line cable detection system, using the power network transmission line cable detection device according to any one of claims 1 to 6, characterized in that: It mainly consists of a cable detection and positioning upper structure (1), a cable detection and positioning lower structure (2) and a detection center, wherein the cable detection and positioning upper structure (1) and the cable detection and positioning lower structure (2) are installed on the cables of the overhead distribution line using a wire clamping structure, and can detect and collect high-frequency fault current and fault traveling wave current and ground electric field signals generated by line faults in real time, and upload them to the detection center via a wireless network.

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