Power transmission tower anti-dancing energy dissipation device and energy dissipation method

Abstract

The present application belongs to the technical field of electric power engineering. The present application provides a power transmission tower anti-dancing energy dissipation device and energy dissipation method. By setting the steel strand, the internal energy dissipation mechanism containing the main rotating shaft, the main gear, the slave gear, the energy dissipation rotating shaft and the rotating shaft, the first external energy dissipation mechanism and the second external energy dissipation mechanism on both sides are matched, and the steel strand and the spacer rod are connected by the connecting hinge and the buckle, the energy dissipation structure of multiple components is constructed, the problem of difficult to solve the vibration energy caused by the power transmission tower dancing is solved, the defect of weak energy dissipation capacity of single structure is overcome, the conduction efficiency and preliminary energy dissipation effect of dancing vibration are improved, and early damage of the connection part of the steel strand and the spacer rod due to uneven vibration stress is avoided.

Description

Technical Field

[0001] This invention relates to the field of power engineering technology, and in particular to an energy-consuming device and method for preventing transmission tower galloping. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] With the growth of electricity demand, transmission towers play a crucial role in the power system. However, during operation, transmission towers are frequently affected by external factors such as wind, snow cover, and the structure of the conductors themselves, resulting in various forms of galloping. Especially under severe weather conditions such as strong winds and freezing temperatures, the conductors and transmission towers experience continuous and significant vibrations, leading to varying degrees of fatigue damage to the conductor hardware, tower body, and supporting structure. This galloping phenomenon can not only cause serious accidents such as whiplash, abrasion, and breakage of the conductors, and even tower collapse, but it can also cause transmission line outages and tripping, affecting the stable supply of electricity.

[0004] Currently, some progress has been made in the control technology for transmission tower galloping, including the use of anti-galloping spacers and vibration isolators to limit the relative movement of conductors or towers. However, these technologies mostly adopt passive protection designs and cannot respond flexibly to different vibration frequencies and amplitudes. Although anti-galloping spacers can reduce the impact of low-frequency, large-amplitude vibrations to some extent, their ability to control high-frequency, small-amplitude vibrations of conductors under light wind conditions is weak, and they cannot effectively prevent long-term fatigue damage. In addition, most existing anti-galloping devices rely on rigid components or fixed structures of external loads, which makes them lack adaptive adjustment capabilities when facing complex and variable meteorological environments and vibration modes. Especially under conditions of varying wind speeds and different meteorological conditions, traditional anti-galloping devices are unable to continuously and stably exert their suppression effect. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a power transmission tower anti-galling energy consumption device and method, which combines an internal energy consumption mechanism with a first and a second external energy consumption mechanism symmetrically arranged on both sides of the internal energy consumption mechanism to achieve better anti-galling energy consumption.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides a power transmission tower anti-galling energy consumption device.

[0008] A transmission tower anti-galling energy dissipation device includes: steel strands, an internal energy dissipation mechanism, and a first external energy dissipation mechanism and a second external energy dissipation mechanism symmetrically arranged on both sides of the internal energy dissipation mechanism. The steel strands include an upper section of steel strands and a lower section of steel strands. The first end of the upper section of steel strands is connected to a first buckle through a first connecting hinge, and the first buckle is connected to a first spacer bar. The second end of the lower section of steel strands is connected to a second buckle through a second connecting hinge, and the second buckle is connected to a second spacer bar.

[0009] The internal energy-consuming mechanism includes a first main rotating rod, a first main gear, a first driven gear, a first energy-consuming rotating shaft, a first energy-consuming rotating rod, a second main rotating rod, a second main gear, a second driven gear, a second energy-consuming rotating shaft, and a second energy-consuming rotating rod;

[0010] The first main rotating rod is connected to the second end of the upper section of steel strand. The upper section of steel strand is provided with a first insulator string, and the lower section of steel strand is provided with a second insulator string. The first main rotating rod is connected to the first main gear, the first main gear meshes with the first driven gear, the first driven gear is connected to the first energy-dissipating rotating shaft, one side of the first energy-dissipating rotating shaft is connected to the first energy-dissipating rotating rod, and the other side of the first energy-dissipating rotating shaft is connected to the first external energy-dissipating mechanism.

[0011] The second main rotating rod is connected to the first end of the lower section of steel strand. The second main rotating rod is connected to the second main gear. The second main gear meshes with the second driven gear. The second driven gear is connected to the first energy-consuming rotating shaft. One side of the second energy-consuming rotating shaft is connected to the second energy-consuming rotating rod. The other side of the second energy-consuming rotating shaft is connected to the second external energy-consuming mechanism. The second energy-consuming rotating rod is positioned opposite to the first energy-consuming rotating rod.

[0012] In one implementation of the first aspect of the present invention, the first main gear is clamped by a first clamping device, the second main gear is clamped by a second clamping device, the first main rotating rod is connected to a first monitoring device, and the second main rotating rod is connected to a second detection device.

[0013] In one implementation of the first aspect of the present invention, an internal energy-consuming mechanism is arranged inside an internal energy-consuming housing, a first external energy-consuming mechanism is arranged inside a first housing, a second external energy-consuming mechanism is arranged inside a second housing, an upper steel strand connection port is opened at the upper part of the internal energy-consuming housing, and a lower steel strand connection port is opened at the lower part of the internal energy-consuming housing.

[0014] As a further limitation of the first aspect of the present invention, the internal energy-consuming shell is a square shell, and a solar power supply panel for power supply is connected to the side of the square shell. The first shell and the second shell are both cylindrical shells. A first rotating rod connection channel and a first line connection channel are provided between the first shell and the internal energy-consuming shell. A second rotating rod connection channel and a second line connection channel are provided between the second shell and the internal energy-consuming shell.

[0015] In one implementation of the first aspect of the present invention, the internal energy dissipation mechanism includes: a first cylindrical shell, a first fixed outer wall arranged on the upper part of the first cylindrical shell, and a second fixed outer wall arranged on the lower part of the first cylindrical shell. Magnetic blocks in the gap between the magnetic blocks of the first fixed outer wall and magnetic blocks in the gap between the magnetic blocks of the second fixed outer wall are symmetrically arranged with a magnetic field. The first energy dissipation rotating rod and the second energy dissipation rotating rod both rotate inside the first cylindrical shell. A plurality of energy dissipation balls for cutting magnetic field lines are provided inside the cylindrical shell.

[0016] In one implementation of the first aspect of the present invention, the first external energy dissipation mechanism includes: a second cylindrical shell, a first driven rod, a first energy dissipation rotating plate, a first elastic element and a magnetorheological fluid, wherein the first driven rod is connected to a first energy dissipation rotating shaft and the first energy dissipation rotating plate is connected to the first driven rod;

[0017] The second cylindrical shell includes an inner wall and an outer wall. A coil and a circuit control box connected to the coil are arranged between the inner wall and the outer wall. The internal space of the second cylindrical shell is divided into a first inner cavity and a second inner cavity by a first limiting plate along the central axis.

[0018] The inner wall of the first inner cavity and the first flow limiting plate form a first flow limiting channel. The first flow limiting channel is connected to the first inner cavity through the reserved gaps at the upper and lower ends of the first inner cavity, respectively. The inner wall of the second inner cavity and the second flow limiting plate form a second flow limiting channel. The second flow limiting channel is connected to the second inner cavity through the reserved gaps at the upper and lower ends of the second inner cavity, respectively.

[0019] Both the first and second inner cavities are equipped with magnetorheological fluid, and an elastic element connects the first energy-consuming rotating plate and the first limiting plate.

[0020] As a further limitation of the first aspect of the present invention, the first limiting plate and the first energy-consuming rotating plate are arranged in a cross shape, and the adjacent plates of the first limiting plate and the first energy-consuming rotating plate are connected by an elastic member.

[0021] In one implementation of the first aspect of the present invention, the second external energy dissipation mechanism includes: a third cylindrical shell, a second driven rod, a second energy dissipation rotating plate, a second elastic element and a magnetorheological fluid, wherein the second driven rod is connected to a second energy dissipation rotating shaft and the second energy dissipation rotating plate is connected to the second driven rod;

[0022] The third cylindrical shell includes an inner wall and an outer wall, with a coil arranged between the inner wall and the outer wall. The internal space of the third cylindrical shell is divided into a first inner cavity and a second inner cavity by a second limiting plate along the central axis.

[0023] The inner wall of the first inner cavity and the second flow limiting plate form a first flow limiting channel. The first flow limiting channel is connected to the first inner cavity through the reserved gaps at the upper and lower ends of the first inner cavity, respectively. The inner wall of the second inner cavity and the second flow limiting plate form a second flow limiting channel. The second flow limiting channel is connected to the second inner cavity through the reserved gaps at the upper and lower ends of the second inner cavity, respectively.

[0024] Both the first and second inner cavities are equipped with magnetorheological fluid, and an elastic element connects the second energy-consuming rotating plate and the second limiting plate.

[0025] As a further limitation of the first aspect of the present invention, the second limiting plate and the second energy-consuming rotating plate are arranged in a cross shape, and the adjacent plates of the second limiting plate and the second energy-consuming rotating plate are connected by an elastic member.

[0026] Secondly, the present invention provides a method for preventing energy consumption due to power transmission tower galloping.

[0027] A method for preventing transmission tower galloping and energy consumption, utilizing the transmission tower anti-galloping energy consumption device of the first aspect of the present invention, includes the following process:

[0028] When the upper section of steel strand moves due to the vibration of the first spacer bar, it drives the first main rotating rod to rotate, which in turn drives the first main gear to rotate. The first main gear meshes with the first driven gear, causing the first driven gear to drive the first energy-consuming shaft to rotate. One side of the first energy-consuming shaft is connected to the first energy-consuming rod. As the first energy-consuming shaft rotates, the first energy-consuming rod begins to make circular motion. At the same time, the other side of the first energy-consuming shaft transmits the rotational power to the first external energy-consuming mechanism, triggering the first external energy-consuming mechanism to start energy-consuming operation.

[0029] When the lower section of the steel strand moves due to the vibration of the second spacer bar, it drives the second main rotating rod to rotate, which in turn drives the second main gear to rotate. The second main gear meshes with the second driven gear, causing the second driven gear to drive the second energy-dissipating shaft to rotate. One side of the second energy-dissipating shaft is connected to the second energy-dissipating rod. As the second energy-dissipating shaft rotates, the second energy-dissipating rod begins to perform circular motion. At the same time, the other side of the second energy-dissipating shaft transmits the rotational power to the second external energy-dissipating mechanism, triggering the second external energy-dissipating mechanism to start energy dissipation operations.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] This invention constructs a multi-component collaborative energy dissipation structure by setting up an internal energy dissipation mechanism consisting of a steel strand, a main rotating rod, a main gear, a driven gear, an energy-dissipating shaft, and a rotating rod, combined with external energy dissipation mechanisms on both sides, and connecting the steel strand and spacer bars with connecting hinges and buckles. This solves the problem of difficult dissipation of vibration energy caused by transmission tower galloping, overcomes the defect of weak energy dissipation capacity of a single structure, improves the transmission efficiency and initial energy dissipation effect of galloping vibration, and avoids early damage to the connection between the steel strand and the spacer bars due to uneven vibration stress.

[0032] This invention solves the problem of low energy consumption efficiency of internal energy-consuming mechanisms relying solely on mechanical transmission by adding a cylindrical shell with upper and lower fixed outer wall magnetic blocks (forming a magnetic field) to the internal energy-consuming mechanism, and allowing the energy-consuming rotating rod to rotate inside the shell. It also overcomes the disordered movement and dispersed energy consumption of the energy-consuming ball when there is no magnetic field, improves the absorption and conversion efficiency of vibration energy by the internal energy-consuming mechanism, and avoids the weakening of the overall anti-galling effect due to insufficient energy absorption in the internal energy-consuming link.

[0033] This invention solves the problem of poor adaptability of external energy dissipation mechanisms to different amplitudes of galloping by using a coiled cylindrical shell, magnetorheological fluid, energy dissipation rotating plate, elastic element, and flow-limiting channel in the external energy dissipation mechanism, combined with the connection between the rotating rod and the energy dissipation shaft. It overcomes the defects of insufficient restoring force of traditional elastic structures and unconstrained flow of magnetorheological fluid, improves the graded absorption and adaptive energy dissipation capability of external energy dissipation mechanism for vibration energy, avoids failure or excessive wear of external energy dissipation mechanism due to changes in galloping amplitude, and enhances the anti-galloping stability of the overall device.

[0034] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0035] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0036] Figure 1 A schematic diagram of the overall three-view view of the anti-galling energy-consuming device provided in an exemplary embodiment of the present invention;

[0037] Figure 2 A front view of the main body of the anti-galling energy-consuming device provided as an exemplary embodiment of the present invention;

[0038] Figure 3 An internal connection structure diagram of an anti-galling energy-consuming device provided in an exemplary embodiment of the present invention;

[0039] Figure 4 A plan view of an internal energy dissipation mechanism provided for an exemplary embodiment of the present invention;

[0040] Figure 5 A plan view of an external energy dissipation mechanism provided for an exemplary embodiment of the present invention;

[0041] in:

[0042] 1. Internal energy dissipation mechanism; 2. First external energy dissipation mechanism; 3. Solar power supply panel; 4. First line connection channel; 5. First rotating rod connection channel; 6. Steel strand connection port; 7. Steel strand; 7-1. Upper section of steel strand; 7-2. Lower section of steel strand; 8. First insulator string; 9. First connecting hinge; 10. First buckle; 11. First spacer bar; 12. Second insulator string; 13. Second connecting hinge; 14. Second buckle; 15. Second spacer bar; 16. Second external energy dissipation mechanism; 17. Second line connection channel; 18. Second rotating rod connection channel;

[0043] 1-1, First monitoring device; 1-2, First main rotating rod; 1-3, First main gear; 1-4, First pre-tightening device; 1-5, First driven gear; 1-6, First energy-consuming rotating shaft; 1-7, First energy-consuming rotating rod; 1-8, Energy-consuming ball; 1-9, Cylindrical shell; 1-10, Magnetic block; 1-11, Magnetic block gap; 1-12, First fixed outer wall; 1-13, Second monitoring device; 1-14, Second main rotating rod; 1-15, Second main gear; 1-16, Second pre-tightening device; 1-17, Second driven gear; 1-18, Second energy-consuming rotating shaft; 1-19, Second energy-consuming rotating rod; 1-20, Second fixed outer wall;

[0044] 2-1. First rotating rod; 2-2. First fixed bearing; 2-3. First energy-consuming rotating plate; 2-4. First elastic element; 2-5. First elastic element fixing device; 2-6. First limiting plate; 2-7. Reserved gap; 2-8. Magnetorheological fluid; 2-9. First flow limiting plate; 2-10. First flow limiting channel; 2-11. Inner wall; 2-12. Coil; 2-13. Circuit control box; 2-14. Outer wall. Detailed Implementation

[0045] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0046] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0047] As mentioned in the background technology, current anti-galling devices still have certain technical limitations and cannot fully meet the needs of transmission towers to resist galling in complex environments. Therefore, this implementation proposes an energy-dissipating device for preventing transmission tower galling, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it includes: steel strand 7, internal energy dissipation mechanism 1, and a first external energy dissipation mechanism 2 and a second external energy dissipation mechanism 16 symmetrically arranged on both sides of the internal energy dissipation mechanism.

[0048] In this implementation, the steel strand 7 is divided into an upper steel strand 7-1 and a lower steel strand 7-2, both of which bear the functions of vibration transmission and load-bearing. The first end of the upper steel strand 7-1 is fixedly connected to the first buckle 10 (arc-shaped structure adapted to the shape of the spacer bar) through the first connecting hinge 9 (which allows for slight rotation to avoid rigid breakage). The first buckle 10 is also fixedly engaged with the first spacer bar 11 of the transmission line (which is in direct contact with the conductor and transmits conductor vibration). The second end of the lower steel strand 7-2 is fixedly connected to the second buckle 14 through the second connecting hinge 13. The second buckle 14 is also fixedly engaged with the second spacer bar 15. The upper steel strand 7-1 is connected in series with the first insulator string 8, and the lower steel strand 7-2 is connected in series with the second insulator string 12. Both provide electrical insulation and, through their own slight elastic deformation, buffer the initial vibration, preventing the vibration from being directly and rigidly transmitted to the internal energy dissipation mechanism 1.

[0049] In this implementation, the internal energy dissipation mechanism 1 is encapsulated within an internal energy dissipation shell (square structure, made of high-strength aluminum alloy, corrosion resistant). The upper part of the square internal energy dissipation shell has an upper steel strand connection port 6 (the second end of the upper steel strand 7-1 passes through this port and connects to the internal energy dissipation mechanism 1), and the lower part has a lower steel strand connection port 6 (the first end of the lower steel strand 7-2 passes through this port and connects to the internal energy dissipation mechanism 1). The side of the square internal energy dissipation shell is bolted to a solar power supply panel 3, which provides continuous power to the coil 2-12, circuit control box 2-13, first monitoring device 1-1, and second monitoring device 1-13 inside the device (adapted to outdoor scenarios without external power supply).

[0050] In this implementation, the first external energy dissipation mechanism 2 is encapsulated in the first housing (cylindrical, made of the same material as the inner energy dissipation housing). A first rotating rod connection channel 5 (for the first energy dissipation shaft 1-6 to pass through and transmit rotational power) and a first line connection channel 4 (for circuit control lines and monitoring signal lines to pass through) are opened between the first housing and the square inner energy dissipation housing. The second external energy dissipation mechanism 16 is encapsulated in the second housing (cylindrical, symmetrical to the first housing). A second rotating rod connection channel 18 (for the second energy dissipation shaft 1-18 to pass through) and a second line connection channel 17 (for lines to pass through) are opened between the second housing and the square inner energy dissipation housing.

[0051] In this implementation, the internal energy dissipation mechanism 1 is the initial unit for dissipating vibration energy. Its core achieves energy conversion through gear transmission, electromagnetic energy dissipation, and frictional collision energy dissipation. Specifically, it includes:

[0052] One end of the first main rotating rod 1-2 (a round metal rod with chrome-plated surface for rust prevention) is welded and fixed to the second end of the upper section of steel strand 7-1, and the other end is fixed to the first main gear 1-3 (a spur gear) via a key connection; the first main gear 1-3 is tightened by the first pre-tightening device 1-4 (a spring-loaded structure fixed to the inner wall of the inner energy-dissipating housing) to ensure that it meshes with the first driven gear 1-5 (with the same module as the first main gear 1-3) without gap, thus avoiding transmission slippage;

[0053] The center hole of the first driven gear 1-5 is press-fitted with the first energy-consuming shaft 1-6 (stepped shaft, to improve coaxiality). The side of the first energy-consuming shaft 1-6 near the internal energy-consuming mechanism is welded and fixed to the first energy-consuming rod 1-7 (L-shaped metal rod with an arc-shaped push plate at the end). The side of the first energy-consuming shaft 1-6 near the first external energy-consuming mechanism passes through the first rod connecting channel 5 and is connected to the first driven rod 2-1 coupling of the first external energy-consuming mechanism 2.

[0054] Symmetrically, one end of the second main rotating rod 1-14 is welded and fixed to the first end of the lower section steel strand 7-2, and the other end is keyed to the second main gear 1-15; the second main gear 1-15 is tightened by the second pre-tightening device 1-16 and meshes with the second driven gear 1-17; the second driven gear 1-17 is interference-fitted with the second energy-consuming rotating shaft 1-18, and the side of the second energy-consuming rotating shaft 1-18 near the inner energy-consuming mechanism is welded and fixed to the second energy-consuming rotating rod 1-19 (symmetrically arranged with the first energy-consuming rotating rod 1-7); the side of the second energy-consuming rotating shaft 1-18 near the second outer energy-consuming mechanism passes through the second rotating rod connecting channel 18 and is connected to the second driven rotating rod coupling of the second outer energy-consuming mechanism 16.

[0055] The first monitoring device 1-1 (such as an angular displacement sensor with a range of ±360°) is bolted to the first main rotating rod 1-2, and the second monitoring device 1-13 (same as the first monitoring device) is bolted to the second main rotating rod 1-14. Both are connected to the circuit control box 2-13 through a line to collect the rotation angle / angular velocity of the rotating rod in real time (reflecting the vibration amplitude).

[0056] The core energy-consuming cavity of the internal energy-consuming mechanism 1 is a cylindrical shell 1-9 (made of metal with a smooth inner wall, and the first cylindrical shell), with a first fixed outer wall 1-12 (annular plate, fixed to the inner wall of the internal energy-consuming shell) welded to its upper part, and a second fixed outer wall 1-20 (symmetrical to the first fixed outer wall 1-12) welded to its lower part.

[0057] The first fixed outer wall 1-12 has multiple magnetic block gaps 1-11 (uniformly distributed, 5mm apart), and each magnetic block gap 1-11 is embedded with a magnetic block 1-10 (neodymium iron boron strong magnet); the magnetic block gaps 1-11 of the second fixed outer wall 1-20 are arranged in a mirror image with the magnetic blocks 1-10, forming a stable and uniform magnetic field in the vertical direction; the cylindrical shell 1-9 is filled with multiple energy-dissipating balls 1-8 (10mm diameter stainless steel balls, conductive and wear-resistant), and the first energy-dissipating rotating rod 1-7 and the second energy-dissipating rotating rod 1-19 are both located inside the cylindrical shell 1-9, and can push the energy-dissipating balls 1-8 to move when rotated.

[0058] The first external energy dissipation mechanism 2 is a deep adaptive energy dissipation unit for vibration. Its core utilizes magnetorheological fluid damping and elastic buffering to achieve graded energy dissipation. Specifically, it includes:

[0059] The outer shell of the first external energy dissipation mechanism 2 is a second cylindrical shell (double-layer structure, including an inner wall 2-11 and an outer wall 2-14, both made of stainless steel). A coil 2-12 (copper enameled wire, 1000 turns) is wound in the annular cavity between the inner wall 2-11 and the outer wall 2-14, and the circuit control box 2-13 (including MCU and current drive module) is bolted to it. The coil 2-12 is connected to the solar power supply panel 3 and the circuit control box 2-13 respectively through the wires of the first line connection channel 4. The circuit control box 2-13 adjusts the coil current (controls the magnetic field strength).

[0060] The internal space of the second cylindrical shell is divided into a first inner cavity and a second inner cavity (two independent chambers, upper and lower) by a first limiting plate 2-6 (a circular metal plate with its edges welded to the inner wall 2-11). A first flow-limiting plate 2-9 (an arc-shaped metal plate with a 2mm gap from the inner wall 2-11) is welded to the inner wall 2-11 of the first inner cavity, forming a first flow-limiting channel 2-10 (a narrow flow channel). The reserved gap 2-7 between the upper end of the first flow-limiting channel 2-10 and the upper end of the first inner cavity (between the first limiting plate 2-6 and the inner wall 2-11) The first inner cavity is connected to the first inner cavity by a gap (1 mm wide), and the lower end is connected to the reserved gap 2-7 at the lower end of the first inner cavity to ensure that the magnetorheological fluid can circulate. The structure of the second inner cavity is completely the same as that of the first inner cavity: the first flow limiting plate 2-9 is welded to the inner wall 2-11 to form the first flow limiting channel 2-10, which is connected to the second inner cavity through the reserved gaps 2-7 at the top and bottom. Both the first and second inner cavities are filled with magnetorheological fluid 2-8 (silicone oil-based magnetorheological fluid, zero magnetic field viscosity 100 mPa·s), and the liquid level matches the cavity volume (no air bubbles).

[0061] One end of the first driven rod 2-1 (a round metal rod) is connected to the first energy-consuming shaft 1-6 via a coupling, and the other end passes through the end cap of the second cylindrical shell (a first fixed bearing 2-2 is installed between the end cap and the first driven rod 2-1 to ensure smooth rotation and prevent magnetorheological fluid leakage), and passes through the center hole of the first limiting plate 2-6 (clearance fit, which does not affect the fixation of the first limiting plate); the portions of the first driven rod 2-1 inside the first and second inner cavities are both welded with the first energy-consuming rotating plate 2-3 (a round metal plate with a 1mm gap between its edge and the inner wall 2-11). The surface has a guide groove); the upper and lower sides of the first limiting plate 2-6 are welded with the first elastic element fixing device 2-5 (metal boss), and the corresponding sides of the first energy dissipation rotating plate 2-3 are also welded with the first elastic element fixing device 2-5; the two ends of the first elastic element 2-4 (stainless steel spring, stiffness 10N / mm) are respectively hooked to the adjacent first elastic element fixing device 2-5; and the first limiting plate 2-6 and the first energy dissipation rotating plate 2-3 are arranged in a cross shape, and one first elastic element 2-4 (e.g., spring) is arranged between adjacent plate surfaces to ensure force balance.

[0062] The second external energy dissipation mechanism 16 is completely symmetrical to the first external energy dissipation mechanism 2, differing only in position. Its structure and connection relationship are as follows: The outer shell is a third cylindrical shell (with the same structure as the second cylindrical shell, including an inner wall 2-11 and an outer wall 2-14). A coil 2-12 and a circuit control box 2-13 are arranged between the inner and outer walls. The circuit is connected to the solar power supply panel 3 via a second circuit connection channel 17. The interior of the third cylindrical shell is divided into two cavities by a second limiting plate (identical to the first limiting plate 2-6). Each cavity is welded with a second current-limiting plate (identical to the first current-limiting plate 2-9) to form a second current-limiting channel. A pre-reserved... The gap 2-7 is connected, and the cavity is filled with magnetorheological fluid 2-8; one end of the second driven rod (consistent with the first driven rod 2-1) is connected to the second energy-consuming shaft 1-18 coupling, and the other end passes through the second fixed bearing (consistent with the first fixed bearing 2-2) and enters the third cylindrical shell. The second energy-consuming rotating plate (consistent with the first energy-consuming rotating plate 2-3) is welded in the two inner cavities; the second limiting plate and the second energy-consuming rotating plate are arranged in a cross shape, and the adjacent plate surfaces are connected by the second elastic element (consistent with the first elastic element 2-4). The two ends of the second elastic element are fixed on the second elastic element fixing device (consistent with the first elastic element fixing device 2-5).

[0063] The working process of the device of this invention is based on vibration transmission → preliminary elimination of internal energy loss → in-depth elimination of external energy loss. It is divided into two scenarios: vibration of the upper section of steel strand and vibration of the lower section of steel strand, taking into account the collaborative working logic. The specific steps are as follows:

[0064] Step 1: External excitation and vibration transmission (triggering phase).

[0065] When transmission lines are subjected to external excitations such as wind and snow cover:

[0066] The vibration of the conductor drives the first spacer 11 to vibrate synchronously. The vibration is transmitted to the first connecting hinge 9 through the first buckle 10 (allowing small rotation to avoid rigid stress concentration), and then to the upper section of steel strand 7-1.

[0067] At the same time, the vibration of the conductor drives the second spacer 15 to vibrate synchronously, which is transmitted to the lower section of steel strand 7-2 through the second buckle 14 and the second connecting hinge 13; the first insulator string 8 and the second insulator string 12 buffer 10%-15% of the initial vibration energy through their own slight elastic deformation, avoiding direct rigid impact of vibration on the internal energy dissipation mechanism 1 (reducing fatigue damage to the connecting parts and extending the service life of the steel strand and buckle).

[0068] Step 2: Initial energy consumption of internal energy-consuming mechanism 1 (first stage of energy consumption).

[0069] (1) Internal energy dissipation triggered by the upper section of steel strand.

[0070] The vibration of the upper section of steel strand 7-1 causes it to twist axially or swing slightly, which drives the first main rotating rod 1-2 to rotate. The first main rotating rod 1-2 drives the first main gear 1-3 to rotate. Because the first pre-tightening device 1-4 is tightened, the first main gear 1-3 and the first driven gear 1-5 are stably meshed, transmitting the rotational motion to the first energy-consuming shaft 1-6 (working principle: gear transmission ratio 1:2, which converts the small vibration of the steel strand into the stable rotation of the energy-consuming shaft, improving energy transfer efficiency).

[0071] The first energy-consuming rotating shaft 1-6 drives the first energy-consuming rotating rod 1-7 to make circular motion inside the cylindrical shell 1-9, pushing the energy-consuming ball 1-8 to roll and collide along the inner wall of the shell; at the same time, in the magnetic field formed by the magnetic block 1-10, the metal energy-consuming ball 1-8 cuts the magnetic field lines when it moves, generating an eddy current effect (working principle: electromagnetic induction law, eddy current generates Joule heat, converting the mechanical energy of vibration into heat energy for dissipation).

[0072] In addition, the collision between the energy-consuming balls 1-8 and the friction with the inner wall of the shell and the first energy-consuming rotating rod 1-7 further convert 15%-20% of the mechanical energy into heat energy (through the dual effects of electromagnetic energy consumption and frictional collision energy consumption, 30%-40% of the vibration energy is initially eliminated, avoiding excessive energy transfer to the external energy-consuming mechanism and causing it to overload).

[0073] (2) Internal energy dissipation triggered by the lower section of steel strand (symmetric coordination).

[0074] The vibration of the lower section of steel strand 7-2 drives the second main rotating rod 1-14 to rotate, which drives the second main gear 1-15 to mesh with the second driven gear 1-17, and transmits the power to the second energy-dissipating rotating shaft 1-18, thereby driving the second energy-dissipating rotating rod 1-19 to rotate.

[0075] The second energy-consuming rotor 1-19 stirs the energy-consuming ball 1-8 synchronously or in the opposite direction to the first energy-consuming rotor 1-7, increasing the collision frequency and magnetic line cutting intensity of the energy-consuming ball, and additionally dissipating 5%-10% of the vibration energy (the symmetrical synergistic effect improves the internal energy consumption efficiency, ensures uniform energy distribution inside the shell, and avoids local overheating).

[0076] (3) Monitoring data feedback.

[0077] The first monitoring device 1-1 collects the rotational angular velocity of the first main rotating rod 1-2 in real time (e.g., angular velocity > 10 rad / s indicates large-amplitude vibration, < 5 rad / s indicates small-amplitude vibration), and the second monitoring device 1-13 collects the angular velocity data of the second main rotating rod 1-14 and transmits it to the circuit control box 2-13 through the line (to provide accurate data support for the adaptive adjustment of the external energy-consuming mechanism and avoid one-size-fits-all energy consumption).

[0078] Step 3: Deep adaptive energy dissipation of external energy dissipation mechanism (secondary energy dissipation).

[0079] (1) The deep energy consumption of the first external energy dissipation mechanism 2 (upper section vibration trigger).

[0080] The first energy-consuming rotating shaft 1-6 drives the first driven rotating rod 2-1 to rotate via a coupling, and the first driven rotating rod 2-1 drives the first energy-consuming rotating plate 2-3 to rotate within the two inner cavities of the second cylindrical shell.

[0081] The circuit control box 2-13 adjusts the current of coil 2-12 based on the angular velocity data from the first monitoring device 1-1.

[0082] If the vibration amplitude is large (angular velocity > 10 rad / s): the circuit control box 2-13 increases the coil current to 1A, and the coil generates a strong magnetic field, for example, increasing the viscosity of the magnetorheological fluid 2-8 from 100 mPa·s to 10000 mPa·s (close to solid state); when the first energy-consuming rotating plate 2-3 rotates, it needs to overcome the resistance of the high-viscosity magnetorheological fluid, and at the same time, the magnetorheological fluid flows through the first flow-limiting channel 2-10 (narrow flow channel), and the flow resistance further increases, converting 40%-50% of the mechanical energy into heat energy; at the same time, the first energy-consuming rotating plate 2-3 stretches / compresses the first elastic element 2-4, and the elastic element absorbs 10%-15% of the mechanical energy through deformation and slowly releases it when resetting, and then consumes it through the damping of the magnetorheological fluid (the combination of high-viscosity magnetorheological fluid, flow-limiting resistance and elastic buffering achieves efficient suppression of large-amplitude vibration and avoids wire whipping and tower shaking).

[0083] If the vibration amplitude is small (angular velocity < 5 rad / s): the circuit control box 2-13 reduces the coil current to 0.2A, the coil magnetic field weakens, and the viscosity of the magnetorheological fluid drops to 300 mPa·s (close to liquid state); the rotational resistance of the first energy-consuming rotating plate 2-3 is reduced, but the small-amplitude deformation of the first elastic element 2-4 can still absorb 5%-8% of the mechanical energy, and the viscous friction of the magnetorheological fluid can also consume 5%-10% of the energy (solving the problem of failure of traditional devices to control small-amplitude vibrations, and avoiding wire wear and hardware fatigue caused by long-term small-amplitude vibrations).

[0084] (2) Deep energy consumption of the second external energy dissipation mechanism 16 (lower section vibration trigger, symmetrical coordination).

[0085] The second energy-consuming rotating shaft 1-18 drives the second driven rod to rotate, which in turn drives the second energy-consuming rotating plate to rotate inside the third cylindrical shell; the circuit control box 2-13 adjusts the coil current of the second external energy-consuming mechanism 16 synchronously according to the data of the second monitoring device 1-13: high viscosity magnetorheological fluid + current limiting resistance + energy consumption of the second elastic element during large vibration, and low viscosity magnetorheological fluid + energy consumption of the second elastic element during small vibration (working symmetrically with the first external energy-consuming mechanism 2 to ensure the overall force balance of the device and avoid unilateral vibration causing the steel strand to shift or the shell to deform).

[0086] Step 4: Full-condition coordination and continuous power supply.

[0087] When the upper and lower sections of the transmission line vibrate simultaneously, the double rotating rods of the internal energy dissipation mechanism 1 work together to agitate the energy dissipation balls 1-8, and the double chambers of the external energy dissipation mechanism synchronously and adaptively adjust, so that the total energy dissipation efficiency can reach 85%-95% (covering all working conditions such as strong wind large-amplitude vibration, light wind small-amplitude vibration, and bidirectional synchronous vibration, ensuring stable anti-galloping effect).

[0088] The solar power panel 3 continuously supplies power to coils 2-12, circuit control box 2-13, and monitoring device through photovoltaic conversion, with an average daily power supply of ≥50Wh, meeting the needs of continuous 24-hour operation in the field (eliminating dependence on external power supply and adapting to the field installation environment of transmission towers).

[0089] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A power transmission tower anti-galling energy dissipation device, characterized in that, include: The steel strand includes an internal energy dissipation mechanism and a first external energy dissipation mechanism and a second external energy dissipation mechanism symmetrically arranged on both sides of the internal energy dissipation mechanism. The steel strand includes an upper section and a lower section. The first end of the upper section is connected to a first buckle through a first connecting hinge, and the first buckle is connected to a first spacer. The second end of the lower section is connected to a second buckle through a second connecting hinge, and the second buckle is connected to a second spacer. The internal energy-consuming mechanism includes a first main rotating rod, a first main gear, a first driven gear, a first energy-consuming rotating shaft, a first energy-consuming rotating rod, a second main rotating rod, a second main gear, a second driven gear, a second energy-consuming rotating shaft, and a second energy-consuming rotating rod; The first main rotating rod is connected to the second end of the upper section of steel strand. The upper section of steel strand is provided with a first insulator string, and the lower section of steel strand is provided with a second insulator string. The first main rotating rod is connected to the first main gear, the first main gear meshes with the first driven gear, the first driven gear is connected to the first energy-dissipating rotating shaft, one side of the first energy-dissipating rotating shaft is connected to the first energy-dissipating rotating rod, and the other side of the first energy-dissipating rotating shaft is connected to the first external energy-dissipating mechanism. The second main rotating rod is connected to the first end of the lower section of steel strand. The second main rotating rod is connected to the second main gear. The second main gear meshes with the second driven gear. The second driven gear is connected to the first energy-consuming rotating shaft. One side of the second energy-consuming rotating shaft is connected to the second energy-consuming rotating rod. The other side of the second energy-consuming rotating shaft is connected to the second external energy-consuming mechanism. The second energy-consuming rotating rod is positioned opposite to the first energy-consuming rotating rod.

2. The transmission tower anti-galling energy-consuming device as described in claim 1, characterized in that, The first main gear is clamped by the first clamping device, the second main gear is clamped by the second clamping device, the first main rotating rod is connected to the first monitoring device, and the second main rotating rod is connected to the second detection device.

3. The transmission tower anti-galling energy-consuming device as described in claim 1, characterized in that, The internal energy-consuming mechanism is arranged inside the internal energy-consuming shell, the first external energy-consuming mechanism is arranged inside the first shell, and the second external energy-consuming mechanism is arranged inside the second shell. The upper part of the internal energy-consuming shell has an upper steel strand connection port, and the lower part of the internal energy-consuming shell has a lower steel strand connection port.

4. The transmission tower anti-galling energy-consuming device as described in claim 3, characterized in that, The internal energy-consuming shell is a square shell, and a solar power panel for power supply is connected to the side of the square shell. The first shell and the second shell are both cylindrical shells. A first rotating rod connection channel and a first line connection channel are provided between the first shell and the internal energy-consuming shell. A second rotating rod connection channel and a second line connection channel are provided between the second shell and the internal energy-consuming shell.

5. The transmission tower anti-galling energy-consuming device as described in claim 1, characterized in that, The internal energy dissipation mechanism includes: a first cylindrical shell, a first fixed outer wall arranged on the upper part of the first cylindrical shell, and a second fixed outer wall arranged on the lower part of the first cylindrical shell. Magnetic blocks in the gap between the magnetic blocks of the first fixed outer wall and magnetic blocks in the gap between the magnetic blocks of the second fixed outer wall are symmetrically arranged with a magnetic field. The first energy dissipation rotating rod and the second energy dissipation rotating rod both rotate inside the first cylindrical shell. A plurality of energy dissipation balls for cutting magnetic field lines are provided inside the cylindrical shell.

6. The transmission tower anti-galling energy dissipation device as described in any one of claims 1-5, characterized in that, The first external energy dissipation mechanism includes: a second cylindrical shell, a first driven rod, a first energy dissipation rotating plate, a first elastic element and a magnetorheological fluid, wherein the first driven rod is connected to the first energy dissipation rotating shaft and the first energy dissipation rotating plate is connected to the first driven rod; The second cylindrical shell includes an inner wall and an outer wall. A coil and a circuit control box connected to the coil are arranged between the inner wall and the outer wall. The internal space of the second cylindrical shell is divided into a first inner cavity and a second inner cavity by a first limiting plate along the central axis. The inner wall of the first inner cavity and the first flow limiting plate form a first flow limiting channel. The first flow limiting channel is connected to the first inner cavity through the reserved gaps at the upper and lower ends of the first inner cavity, respectively. The inner wall of the second inner cavity and the second flow limiting plate form a second flow limiting channel. The second flow limiting channel is connected to the second inner cavity through the reserved gaps at the upper and lower ends of the second inner cavity, respectively. Both the first and second inner cavities are equipped with magnetorheological fluid, and an elastic element connects the first energy-consuming rotating plate and the first limiting plate.

7. The transmission tower anti-galling energy dissipation device as described in claim 6, characterized in that, The first limiting plate and the first energy-consuming rotating plate are arranged in a cross shape, and the adjacent plates of the first limiting plate and the first energy-consuming rotating plate are connected by elastic elements.

8. The transmission tower anti-galling energy dissipation device as described in any one of claims 1-5, characterized in that, The second external energy dissipation mechanism includes: a third cylindrical shell, a second driven rod, a second energy dissipation rotating plate, a second elastic element and a magnetorheological fluid, wherein the second driven rod is connected to a second energy dissipation rotating shaft and the second energy dissipation rotating plate is connected to the second driven rod; The third cylindrical shell includes an inner wall and an outer wall, with a coil arranged between the inner wall and the outer wall. The internal space of the third cylindrical shell is divided into a first inner cavity and a second inner cavity by a second limiting plate along the central axis. The inner wall of the first inner cavity and the second flow limiting plate form a first flow limiting channel. The first flow limiting channel is connected to the first inner cavity through the reserved gaps at the upper and lower ends of the first inner cavity, respectively. The inner wall of the second inner cavity and the second flow limiting plate form a second flow limiting channel. The second flow limiting channel is connected to the second inner cavity through the reserved gaps at the upper and lower ends of the second inner cavity, respectively. Both the first and second inner cavities are equipped with magnetorheological fluid, and an elastic element connects the second energy-consuming rotating plate and the second limiting plate.

9. The transmission tower anti-galling energy-consuming device as described in claim 8, characterized in that, The second limiting plate and the second energy-consuming rotating plate are arranged in a cross shape, and the adjacent plates of the second limiting plate and the second energy-consuming rotating plate are connected by elastic elements.

10. A method for preventing energy loss due to galloping of transmission towers, characterized in that, The transmission tower anti-galling energy dissipation device according to any one of claims 1-9 includes the following process: When the upper section of steel strand moves due to the vibration of the first spacer bar, it drives the first main rotating rod to rotate, which in turn drives the first main gear to rotate. The first main gear meshes with the first driven gear, causing the first driven gear to drive the first energy-consuming shaft to rotate. One side of the first energy-consuming shaft is connected to the first energy-consuming rod. As the first energy-consuming shaft rotates, the first energy-consuming rod begins to make circular motion. At the same time, the other side of the first energy-consuming shaft transmits the rotational power to the first external energy-consuming mechanism, triggering the first external energy-consuming mechanism to start energy-consuming operation. When the lower section of the steel strand moves due to the vibration of the second spacer bar, it drives the second main rotating rod to rotate, which in turn drives the second main gear to rotate. The second main gear meshes with the second driven gear, causing the second driven gear to drive the second energy-dissipating shaft to rotate. One side of the second energy-dissipating shaft is connected to the second energy-dissipating rod. As the second energy-dissipating shaft rotates, the second energy-dissipating rod begins to perform circular motion. At the same time, the other side of the second energy-dissipating shaft transmits the rotational power to the second external energy-dissipating mechanism, triggering the second external energy-dissipating mechanism to start energy-dissipating operations.

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