A composite inertial capacitive transmission line jumper wind deflection prevention device and method

Abstract

This invention discloses a composite inertial-capacitive transmission line jumper wind deflection prevention device and method, belonging to the field of transmission tower technology. It includes a support rod, the top of which is connected to a displacement transmission mechanism. The displacement transmission mechanism is connected to an energy storage and return mechanism. The energy storage and return mechanism includes a feed screw with a helical rotor in the middle. Spring boxes are symmetrically arranged on both sides of the helical rotor. A linkage beam is symmetrically fixed at both ends of the feed screw. Racks are symmetrically arranged on both sides of the feed screw. The linkage beams are fixedly connected to the racks, which mesh with a linkage gear. A first return spring box is symmetrically fixed on the side of the linkage beam near the spring box, and a pressure plate is installed at the other end of the first return spring box. This invention, using the aforementioned composite inertial-capacitive transmission line jumper wind deflection prevention device and method, achieves energy dissipation and displacement suppression under wind deflection conditions. It stores energy when wind force increases and releases energy to drive return after wind load decreases, improving safety and durability.

Description

Technical Field

[0001] This invention relates to the field of transmission tower technology, and in particular to a composite inertial capacitive transmission line jumper wind deflection prevention device and method. Background Technology

[0002] In recent years, with the rapid advancement of power grid construction, the environment along transmission line corridors has become increasingly complex, leading to a significant increase in wind-induced flashover faults caused by strong winds, seriously threatening the safe and stable operation of the power grid. High-voltage transmission lines, due to their tall towers, experience increased wind loads on their conductors. If wind speeds exceed design limits, insufficient electrical clearance between the conductor and the tower can easily occur, triggering wind-induced flashovers. These faults often occur under severe weather conditions such as strong winds and rainfall, and the success rate of automatic reclosing after a fault is low, easily causing line tripping and even large-scale power outages, significantly impacting power supply reliability. They are characterized by their wide impact, recurrence, and severe consequences. Among wind-induced faults in transmission lines, jumper wire flashovers account for a high proportion. Compared to conventional line conductors, jumpers are shorter, lighter, and have a looser suspension structure, making them more prone to swaying under wind loads. Especially under continuous wind, the air gap between the jumper and the tower is difficult to maintain stability, easily leading to multiple discharges and directly affecting the safe operation of the system.

[0003] Existing measures to prevent jumper wire deflection mainly involve adding counterweights, installing anti-deflection conductor sheaths, or installing anti-deflection guy wires. The main problems with these methods are: adding counterweights has limited effectiveness; the counterweights can weigh hundreds of kilograms, increasing the extra load on the towers and potentially causing damage in strong winds; installing anti-deflection conductor sheaths requires significant manual maintenance and is inconvenient to install, and the heat generated by the conductors significantly affects the durability of the sheath material. Installing anti-deflection guy wires is more commonly used in uninhabited or windy areas due to its ease of installation and maintenance, but it is not suitable for areas with high pedestrian or vehicular traffic, limiting its application scope; furthermore, the guy wires require comprehensive anti-theft measures, and in areas prone to theft, additional anti-sawing protection is needed, significantly increasing security costs. Summary of the Invention

[0004] The purpose of this invention is to provide a composite inertial capacitive transmission line jumper wind deflection prevention device and method. Through the dynamic coordination of rotational energy dissipation and inertial energy storage, energy dissipation and displacement suppression under jumper wind deflection are achieved. Mechanical energy is stored when the wind force increases and actively released to drive the system to reset after the wind load weakens, thereby improving safety and durability, having good operational reliability, and being compatible with various transmission tower structures.

[0005] To achieve the above objectives, the present invention provides a composite inertial capacitance type jumper wind deflection prevention device for transmission lines, including a support rod. The top of the support rod is connected to a displacement transmission mechanism, which is connected to an energy storage and return mechanism. The energy storage and return mechanism includes a feed screw, a helical rotor disposed in the middle of the feed screw, and spring boxes symmetrically disposed on both sides of the helical rotor. A linkage beam is symmetrically fixed at both ends of the feed screw, and racks are symmetrically disposed on both sides of the feed screw. The linkage beams are fixedly connected to the racks, and the racks mesh with a linkage gear. A first return spring box is symmetrically fixed on the side of the linkage beam near the spring box, and a pressure plate is installed at the other end of the first return spring box.

[0006] Preferably, the feed screw is connected to the middle of the linkage beam, and the two racks and two gears are symmetrically arranged relative to the feed screw.

[0007] Preferably, the helical rotor has a variable cross-section structure, with a spindle-shaped middle section, a rough inclined surface with evenly distributed hemispherical hard protrusions, and the internal threads of the helical rotor and the feed screw forming a helical pair.

[0008] Preferably, the two mainspring barrels rotate in opposite directions, the central shafts of the two mainspring barrels are truncated cones, the contact surface between the helical rotor and the mainspring barrel shaft is a rough inclined surface, and hemispherical protrusions are distributed on the inclined surface.

[0009] Preferably, the support rod includes a transmission ball, the bottom of which is connected to a connecting rod, a fan-shaped hinge is provided in the middle of the connecting rod, a jumper wire is connected to the end of the connecting rod and a weight is suspended therefrom, and an insulator string is provided between the weight and the fan-shaped hinge.

[0010] Preferably, the displacement transmission mechanism includes four symmetrically arranged displacement drive plates. Each of the four displacement drive plates is provided with a guide slide that cooperates with the transmission ball. One end of each of the four displacement drive plates is hinged to the first base plate, and the other end is connected to two second return spring boxes through a fixing clamp. Each of the four displacement drive plates is provided with a drive tooth at the hinge point. The four drive teeth are symmetrically arranged and are distributed in a cross shape with the two second return spring boxes. Two drive teeth on the same side are symmetrical about the drive gear. The two drive gears are symmetrically arranged, and the drive gears rotate coaxially with the linkage gear through a connecting shaft.

[0011] Preferably, the displacement transmission mechanism is installed on the first base plate, and the energy storage and return mechanism is installed on the second base plate. Both the first and second base plates are installed in the device housing. The first base plate is located below the second base plate. Limiting plates are symmetrically installed on both sides of the second base plate. The limiting plates are arranged parallel to the linkage beam. Guide plates are symmetrically arranged on the second base plate. The two guide plates are located on one side of the rack plane, respectively.

[0012] This invention provides a method for preventing wind deflection of jumpers in composite capacitive transmission lines. The method employs the aforementioned composite capacitive transmission line jumper wind deflection prevention device and specifically includes the following operations: When the jumper wire deviates due to wind, the connecting rod drives the transmission ball to swing, causing the two displacement drive plates on different sides to rotate around the hinge point. The rotation of the different displacement drive plates changes the angle between the different drive teeth and the drive gear, causing the different drive teeth to mesh with the two drive gears and drive the drive gears to rotate. The drive gear rotates coaxially with the linkage gear through the connecting shaft, and the drive rack drives the linkage beam to move linearly. The linkage beam drives the feed screw to move, causing the spiral rotor to rotate. At the same time, the first reset spring box drives the pressure plate to move and push the spring box to cooperate with the spiral rotor, using the spring inside the spring box shell to store energy. After the wind load on the jumper decreases, the first return spring box releases energy, causing the linkage beam to tend to move in the opposite direction. At the same time, the spring box releases the stored energy. The first return spring box and the spring box work together to drive the spiral rotor to rotate in the opposite direction. The spiral rotor drives the feed screw to feed in the opposite direction, and drives the displacement drive plate to rotate through the rack, linkage gear, drive gear and drive shifter. At the same time, under the action of the second return spring box, the transmission ball is pushed back to the center position, so that the support rod and jumper return to the initial vertical suspension state.

[0013] Therefore, this invention employs a composite inertial capacitance type transmission line jumper wind deflection prevention device and method, utilizing a feed screw, helical rotor, spring box, and first reset spring box for energy storage, introducing an inertial capacitance effect. The inertial capacitance characteristics can be flexibly configured by adjusting the spring stiffness, spring parameters, and friction pair shape, which can match the differentiated needs of different voltage levels, jumper lengths, and meteorological conditions. Another part is stored in the spring and spring in the form of torsional potential energy and axial potential energy, respectively. Through the coordinated design of mechanical transmission and dual reset power sources, a deterministic reset path independent of wind direction and speed is established, ensuring that the jumper can stably return to its initial safe position, reliably re-restore, and maintain a minimum insulation gap, effectively reducing the risk of repeated discharge and reclosing failure due to residual wind deflection.

[0014] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal structure of the device housing in the composite inertial capacitive transmission line jumper wind deflection prevention device of the present invention; Figure 2 This is a schematic diagram of the displacement transmission mechanism of a composite inertial-capacitive transmission line jumper wind deflection prevention device according to the present invention; Figure 3 This is a schematic diagram of the energy storage and return mechanism of a composite inertial capacitive transmission line jumper wind deflection prevention device according to the present invention. Figure 4 This is a schematic diagram of the structure of the support rod of the composite inertial-capacitive transmission line jumper wind deflection prevention device of the present invention; Figure 5 This is a schematic diagram of the feed screw, spiral rotor, and spring box of a composite inertial capacitive transmission line jumper wind deflection prevention device of the present invention. Figure 6 This is a schematic diagram of the installation structure of a composite inertial capacitive transmission line jumper wind deflection prevention device according to the present invention; Figure Labels 1. First base plate; 2. Drive gear; 3. Connecting shaft; 4. Drive gear; 5. Displacement drive plate; 51. Hinge point; 6. Fixing clamp; 7. Second return spring box; 8. Second base plate; 9. Linkage gear; 10. Rack; 11. Feed screw; 12. Linkage crossbeam; 13. Helical rotor; 14. Spring barrel; 141. Spring barrel shell; 142. Spring barrel central shaft; 15. Pressure plate; 16. First return spring box; 17. Support rod; 171. Transmission ball; 172. Connecting rod; 173. Sector hinge; 174. Insulator string; 175. Jumper wire; 176. Counterweight; 18. Guide plate; 19. Limiting plate; 20. Tower head crossarm; 21. Steel plate; 22. Device housing. Detailed Implementation

[0016] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] Example 1 like Figures 1 to 6As shown, the present invention provides a composite inertial-capacitive transmission line jumper wind deflection prevention device, including a support rod 17. The top of the support rod 17 is connected to a displacement transmission mechanism, which is connected to an energy storage and return mechanism. The support rod 17 transmits the wind load received by the jumper 175 to the displacement transmission mechanism. The displacement transmission mechanism converts wind energy into mechanical energy and transmits it to the energy storage and return mechanism. The energy storage and return mechanism stores mechanical energy and releases energy when the wind load decreases, causing the displacement transmission mechanism and the support rod 17 to reset, so that the support rod 17 and the jumper 175 return to their initial vertical suspension state.

[0019] The energy storage return mechanism includes a feed screw 11, a helical rotor 13 located in the middle of the feed screw 11, and spring boxes 14 symmetrically arranged on both sides of the helical rotor 13. A linkage beam 12 is symmetrically fixed at both ends of the feed screw 11, and the feed screw 11 is connected to the middle of the linkage beam 12. Racks 10 are symmetrically arranged on both sides of the feed screw 11, with both racks 10 and two gears symmetrically positioned relative to the feed screw 11. The linkage beam 12 is fixedly connected to the racks 10, and the racks 10 mesh with the linkage gears 9. A first return spring box 16 is symmetrically fixed on the side of the linkage beam 12 near the spring box 14, and a pressure plate 15 is installed at the other end of the first return spring box 16. Rotation of the linkage gear 9 drives the racks 10 to move linearly, which in turn drives the linkage beam 12 and the feed screw 11 to move linearly, simultaneously moving the pressure plate 15 through the first return spring box 16.

[0020] The helical rotor 13 has a variable cross-section structure, with a spindle-shaped central section and a rough inclined surface with evenly distributed hemispherical hard protrusions. The internal threads of the helical rotor 13 and the feed screw 11 form a helical pair. Linear movement of the feed screw 11 causes the helical rotor 13 to rotate, achieving bidirectional conversion between linear and rotary motion. The two spring barrels 14 rotate in opposite directions to accommodate wind deflection from the jumper 175. The central shaft 142 of the two spring barrels is frustum-shaped. The contact surface between the helical rotor 13 and the central shaft 142 is a rough inclined surface with hemispherical protrusions. The variable cross-section and rough inclined surface increase the surface friction resistance with the spring barrel 14, while the protruding structure improves frictional stability and prevents slippage.

[0021] The support rod 17 includes a transmission ball 171, the bottom of which is connected to a connecting rod 172. A sector-shaped hinge 173 is provided in the middle of the connecting rod 172. The end of the connecting rod 172 is connected to a jumper 175 and a weight 176 is suspended therefrom. An insulator string 174 is provided between the weight 176 and the sector-shaped hinge 173. The weight 176 uses its own weight to maintain the jumper 175 in a normal vertical position and counteract minor wind disturbances. The insulator string 174 can achieve electrical insulation, isolate the transmission line from the mechanical structure below, and ensure the safe operation of the power equipment. The sector-shaped hinge 173 is a structure of the prior art, which allows the connecting rod 172 to swing only within a preset plane. The transmission ball 171 is an elliptical sphere that can contact different displacement drive plates 5 to accurately transmit the swing displacement and swing torque of the jumper 175 to the upper displacement transmission mechanism, completing the conversion and output of wind-induced deflection motion.

[0022] The displacement transmission mechanism includes four symmetrically arranged displacement drive plates 5. Each of the four displacement drive plates 5 is provided with a guide slide that cooperates with the transmission ball 171. The guide slide cooperates with the transmission ball 171 to receive the swinging motion of the transmission ball 171, converting the spherical swinging motion into the rotation of the displacement drive plate 5 around its axis. One end of each of the four displacement drive plates 5 is hinged to the first base plate 1, and the other end is connected to two second return spring boxes 7 respectively through fixing clamps 6. Each of the four displacement drive plates 5 is provided with a drive tooth 4 at the hinge point. The four drive teeth 4 are symmetrically arranged and are cross-shaped with the two second return spring boxes 7. The two drive teeth 4 on the same side are symmetrical about the drive gear 2. The two drive gears 2 are symmetrically arranged. When the displacement drive plate 5 rotates, the two different drive teeth 4 on the two sides can mesh with the two drive gears 2 respectively. The drive gears 2 rotate coaxially with the linkage gear 9 through the connecting shaft 3. Initially, the drive teeth 4 are not engaged with the drive gear. The displacement drive plate 5 rotates around the hinge point 51, allowing different drive teeth 4 to engage with the drive gear 2, causing the drive gear 2 to rotate in different directions. The second reset spring box 7 provides preload to the displacement drive plate 5, ensuring that the guide slide is always in contact with the transmission ball 171, and provides reset power after the wind load decreases, assisting the displacement drive plate 5 and the transmission ball 171 in returning to the center position.

[0023] The displacement transmission mechanism is installed on the first base plate 1, and the energy storage and return mechanism is installed on the second base plate 8. Both the first base plate 1 and the second base plate 8 are installed in the device housing 22. The first base plate 1 is located below the second base plate 8. The displacement transmission mechanism and the energy storage and return mechanism are installed in layers on the first base plate 1 and the second base plate 8. The layered layout optimizes the spatial structure and avoids motion interference between the two mechanisms. The device housing 22 is installed on the tower head crossarm 20 and the steel plate 21. The tower head crossarm 20 and the steel plate 21 can be connected by welding. Limiting plates 19 are symmetrically installed on both sides of the second base plate 8. The limiting plates 19 are arranged parallel to the linkage crossbeam 12. Guide plates 18 are symmetrically arranged on the second base plate 8. The two guide plates 18 are located on one side of the plane of the rack 10. The limiting plate 19 can limit the maximum travel of the linkage beam 12, rack 10 and feed screw 11, thereby improving the safety and ultimate protection capability of the device. The guide plate guides the linear motion of the rack 10, ensuring that the linkage gear 9 and rack 10 are always precisely meshed, preventing rack 10 from deviating and meshing misalignment.

[0024] This invention provides a method for preventing wind deflection of jumpers in composite capacitive transmission lines. The method employs the aforementioned composite capacitive transmission line jumper wind deflection prevention device and specifically includes the following operations: When jumper 175 is deflected by wind, connecting rod 172 drives transmission ball 171 to swing, causing two displacement drive plates 5 on different sides to rotate around hinge point 51. The rotation of different displacement drive plates 5 changes the angle between different drive teeth 4 and drive gear 2, causing different drive teeth 4 to mesh with the two drive gears 2 and drive the drive gears 2 to rotate. Drive gear 2 rotates coaxially with linkage gear 9 through connecting shaft 3. Drive rack 10 drives linkage beam 12 to perform linear motion. Linkage beam 12 drives feed screw 11 to move, causing spiral rotor 13 to rotate. At the same time, first reset spring box 16 drives pressure plate 15 to move and push spring box 14 to cooperate with spiral rotor 13, using spring inside spring box shell 141 to store energy. After the wind load on jumper 175 decreases, the first return spring box 16 releases energy, causing the linkage beam 12 to tend to move in the opposite direction. At the same time, the spring box 14 releases the stored energy. The first return spring box 16 and the spring box 14 work together to drive the spiral rotor 13 to rotate in the opposite direction. The spiral rotor 13 drives the feed screw 11 to feed in the opposite direction, and drives the displacement drive plate 5 to rotate through the rack 10, linkage gear 9, drive gear 2 and drive shifter 4. At the same time, under the action of the second return spring box 7, the transmission ball 171 is pushed back to the center position, the displacement drive plate 5 is reset, and the engagement between the drive shifter 14 and the drive gear 2 is disengaged, so that the support rod 17 and jumper 175 return to the initial vertical suspension state.

[0025] Therefore, the present invention adopts the above-mentioned composite inertial capacitive transmission line jumper wind deflection prevention device and method, which realizes energy dissipation and displacement suppression under jumper wind deflection through the dynamic coordination of rotational energy consumption and inertial energy storage, and stores mechanical energy when the wind force increases, and actively releases energy to drive the system to reset after the wind load weakens, thereby improving safety and durability, having good operational reliability, and being compatible with various transmission tower structures.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A composite inertial capacitance type jumper wind deflection prevention device for transmission lines, characterized in that: The device includes a support rod, the top of which is connected to a displacement transmission mechanism. The displacement transmission mechanism is connected to an energy storage and return mechanism. The energy storage and return mechanism includes a feed screw, a helical rotor in the middle of the feed screw, and spring boxes symmetrically arranged on both sides of the helical rotor. A linkage beam is symmetrically fixed at both ends of the feed screw. A rack is symmetrically arranged on both sides of the feed screw. The linkage beam is fixedly connected to the rack, and the rack meshes with a linkage gear. A first return spring box is symmetrically fixed on the side of the linkage beam near the spring box, and a pressure plate is installed at the other end of the first return spring box.

2. The composite inertial capacitance type transmission line jumper wind deflection prevention device according to claim 1, characterized in that: The feed screw is connected to the middle of the linkage beam, and the two racks and two gears are symmetrically arranged relative to the feed screw.

3. The composite inertial capacitance type transmission line jumper wind deflection prevention device according to claim 2, characterized in that: The helical rotor has a variable cross-section structure, with a spindle-shaped middle section and a rough inclined surface with evenly distributed hemispherical hard protrusions. The internal threads of the helical rotor and the feed screw form a helical pair.

4. The composite inertial capacitance type transmission line jumper wind deflection prevention device according to claim 3, characterized in that: The two mainspring barrels rotate in opposite directions, and the central shaft of the two mainspring barrels is shaped like a frustum. The contact surface between the helical rotor and the mainspring barrel shaft is a rough inclined surface, and hemispherical protrusions are distributed on the inclined surface.

5. A composite inertial capacitance type transmission line jumper wind deflection prevention device according to claim 4, characterized in that: The support rod includes a transmission ball, the bottom of which is connected to a connecting rod. A sector-shaped hinge is provided in the middle of the connecting rod. A jumper wire is connected to the end of the connecting rod and a weight is suspended therefrom. An insulator string is provided between the weight and the sector-shaped hinge.

6. A composite inertial capacitance type transmission line jumper wind deflection prevention device according to claim 5, characterized in that: The displacement transmission mechanism includes four symmetrically arranged displacement drive plates. Each of the four displacement drive plates is provided with a guide slide that cooperates with the transmission ball. One end of each of the four displacement drive plates is hinged to the first base plate, and the other end is connected to two second return spring boxes through a fixing clamp. Each of the four displacement drive plates is provided with a drive tooth at the hinge point. The four drive teeth are symmetrically arranged and are distributed in a cross shape with the two second return spring boxes. Two drive teeth on the same side are symmetrical about the drive gear. The two drive gears are symmetrically arranged and rotate coaxially with the linkage gear through a connecting shaft.

7. A composite inertial capacitance type transmission line jumper wind deflection prevention device according to claim 6, characterized in that: The displacement transmission mechanism is installed on the first base plate, and the energy storage and return mechanism is installed on the second base plate. Both the first and second base plates are installed in the device housing. The first base plate is located below the second base plate. Limiting plates are symmetrically installed on both sides of the second base plate. The limiting plates are parallel to the linkage beam. Guide plates are symmetrically installed on the second base plate. The two guide plates are located on one side of the rack plane.

8. A method for preventing wind deflection of jumpers in a composite capacitive transmission line, employing the composite capacitive transmission line jumper wind deflection prevention device described in any one of claims 1-7, characterized in that: Specifically, the following operations are included: When the jumper wire deviates due to wind, the connecting rod drives the transmission ball to swing, causing the two displacement drive plates on different sides to rotate around the hinge point. The rotation of the different displacement drive plates changes the angle between the different drive teeth and the drive gear, causing the different drive teeth to mesh with the two drive gears and drive the drive gears to rotate. The drive gear rotates coaxially with the linkage gear through the connecting shaft, and the drive rack drives the linkage beam to move linearly. The linkage beam drives the feed screw to move, causing the spiral rotor to rotate. At the same time, the first reset spring box drives the pressure plate to move and push the spring box to cooperate with the spiral rotor, using the spring inside the spring box shell to store energy. After the wind load on the jumper decreases, the first return spring box releases energy, causing the linkage beam to tend to move in the opposite direction. At the same time, the spring box releases the stored energy. The first return spring box and the spring box work together to drive the spiral rotor to rotate in the opposite direction. The spiral rotor drives the feed screw to feed in the opposite direction, and drives the displacement drive plate to rotate through the rack, linkage gear, drive gear and drive shifter. At the same time, under the action of the second return spring box, the transmission ball is pushed back to the center position, so that the support rod and jumper return to the initial vertical suspension state.

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