Telescopic damping galloping suppression device and system

Abstract

The invention provides a telescopic damping galloping suppression device and system.The device is hung between two adjacent wires of an overhead transmission line and comprises a conductor outer cylinder, an elastic telescopic part, a magnetic piston and a pull rod, and the elastic telescopic part, the magnetic piston and the pull rod are arranged in the conductor outer cylinder and connected in sequence; the conductor outer cylinder is connected with a lead; the pull rod penetrates out of the other end of the conductor outer cylinder, is connected with the other wire, and is used for driving the magnetic piston to move when a galloping displacement difference exists between two adjacent wires; the conductor outer cylinder cuts a magnetic induction line of the moving magnetic piston to realize a hysteresis damping function and generate heat and consume energy so as to restrain conductor galloping; according to the device, the magnetic piston telescopically moves in the conductor outer cylinder, electromagnetic eddy current is generated on the conductor outer cylinder, and displacement limitation of hysteresis damping on the magnetic piston is achieved; meanwhile, the electromagnetic eddy current can effectively heat the air, reduce the icing thickness of the overhead transmission line, form forward feedback, and reduce the waving risk of the overhead transmission line.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power protection, and in particular relates to a telescopic damping and anti-dance device and system. Background Art

[0002] In recent years, transmission line galloping disasters have become more frequent. Currently, the existing anti-galloping devices are mostly developed from the perspectives of phase-to-phase limiting and preventing the formation of crescent-shaped ice. More measures to control galloping are implemented by installing anti-galloping devices on the line. Commonly used anti-galloping devices include line clamp rotary spacers, phase-to-phase spacers, double pendulum anti-galloping devices, detuned pendulums, eccentric weights, etc., but the actual anti-galloping effect is limited.

[0003] 1) Interphase spacers (single conductor or split conductor) are spacers with insulation and mechanical strength used between phases or loops. They mechanically connect the conductors so that the movements of the conductors are mutually restricted to achieve the purpose of suppressing dancing. Interphase spacers are synthetic insulation structures composed of glass fiber reinforced plastic core rods and silicone rubber sheaths. They have high tensile strength, light weight, and certain flexibility; good impact resistance, no breakage; high pollution flashover voltage resistance, etc. Interphase spacers can not only suppress dancing, but also prevent ice shedding and jumping, and can also prevent wind deflection to a certain extent. Interphase spacers are most suitable for anti-dancing of multi-circuit lines on the same tower with vertically arranged phase conductors. However, when the line is violently dancing, due to insufficient energy consumption of the interphase spacers, only limiting will cause the body to be damaged; in addition, in some dancing situations, the interphase spacers will dance with the entire line; installing multiple interphase spacers on the line will greatly increase the weight of the line, and thus put forward higher requirements on the bearing capacity of the tower.

[0004] 2) Wire clamp rotary spacer (suitable for split conductors), which is characterized by the wire clamp of the spacer part can rotate freely (or within a certain angle range), and the wire clamp of part is the same as the ordinary clamp and cannot rotate freely. The movable clamp part can change the ice shape of the ice-covered conductor, thereby changing the aerodynamic coefficient of the ice-covered conductor. Because this anti-dancing device has the dual functions of a spacer and an anti-dancing device, and does not increase the concentrated load on the transmission line, it has basically no effect on the operating stress of the line. Wire clamp rotary spacer has been widely used in the anti-dancing work of overhead transmission lines in my country. Wire clamp rotary spacer is slightly more expensive than ordinary spacer, and it is found during operation and maintenance that the rotary wire clamp often freezes due to freezing, and loses its ability to rotate, reducing the anti-dancing effect of the device.

[0005] 3) Double pendulum anti-dancing device (single conductor and split conductor are both available) is an anti-dancing device with good anti-dancing performance developed based on the stability mechanism. It aims to improve the dynamic stability of the conductor system and also has the function of anti-dancing by weight. At present, double pendulum anti-dancing device has been widely used in many split conductor lines in my country, and has achieved good anti-dancing effect and accumulated rich experience. It is the most widely used anti-dancing device for overhead transmission lines in my country. Double pendulum anti-dancing device also has the characteristics of low cost and easy installation. Double pendulum anti-dancing device is a rigid anti-dancing device. From the overall situation, double pendulum anti-dancing device can basically prevent or suppress dancing to a certain extent. However, from the application experience, when the actual ice and wind conditions exceed the defense range, the line may still dance, and the anti-dancing effect of double pendulum anti-dancing device is limited. Double pendulum anti-dancing device has a complete set of design and calculation methods, and specific problems must be analyzed specifically. Blind application or copying without design calculation will greatly reduce its anti-dancing effect and even have a negative impact on the safe operation of the line. Summary of the invention

[0006] In order to overcome the problem of insufficient energy consumption in the prior art, the present invention proposes a telescopic damping and anti-dance device, which is hung between two adjacent conductors of an overhead transmission line, and comprises:

[0007] A conductor outer cylinder, an elastic telescopic member, a magnetic piston and a pull rod which are arranged in the conductor outer cylinder and connected in sequence;

[0008] One end of the conductor outer cylinder is connected to one of the wires;

[0009] One end of the pull rod away from the magnetic piston passes through the other end of the conductor outer tube and is connected to another of the wires, so as to drive the magnetic piston to move when there is a dancing displacement difference between two adjacent wires;

[0010] When there is a dancing displacement difference between two adjacent conductors, the conductor outer cylinder cuts the magnetic flux lines of the moving magnetic piston, realizes the hysteresis damping function and generates heat and consumes energy to suppress the dancing of the conductors.

[0011] Preferably, the elastic telescopic member comprises a double-hook spring.

[0012] Preferably, the magnetic piston comprises a dumbbell-shaped fixing seat and a magnetic ring sleeved on the central axis of the dumbbell-shaped fixing seat, and two ends of the dumbbell-shaped fixing seat are respectively connected to the elastic telescopic member and the pull rod.

[0013] Preferably, the conductor outer cylinder is connected to the wire through an insulating connector;

[0014] And / or the pull rod is connected to the wire through an insulating connector.

[0015] Preferably, the insulating connector includes one or more of the following:

[0016] Insulator strings and spacer rods.

[0017] Based on the same inventive concept, the present invention also provides a telescopic damping and anti-dance system, which uses at least one telescopic damping and anti-dance device as described above to form a device group; the system includes a plurality of the device groups connected in series;

[0018] The device groups located at both ends of the plurality of device groups are respectively connected to two adjacent conductors of the overhead power transmission line.

[0019] Preferably, the plurality of telescopic damping and anti-dance devices in the device group are arranged in parallel.

[0020] Preferably, two adjacent device groups are connected via a middle connecting plate.

[0021] Preferably, at least one connecting member is respectively provided on both sides of the middle connecting plate, and the connecting member is connected to the conductor outer cylinder or the pull rod in the telescopic damping and anti-dance device.

[0022] Preferably, the device groups at both ends of the plurality of device groups connected in series are connected to the conductive wires via end connection plates.

[0023] Preferably, one side of the end connection disk is connected to the conductor outer cylinder or the pull rod; the other side of the end connection disk is connected to the wire through an insulating connector.

[0024] Compared with the closest prior art, the present invention has the following beneficial effects:

[0025] The present invention provides a telescopic damping and anti-dancing device and system. The device is hung between two adjacent conductors of an overhead transmission line, and comprises: a conductor outer cylinder, an elastic telescopic part, a magnetic piston and a pull rod which are arranged in the conductor outer cylinder and connected in sequence; one end of the conductor outer cylinder is connected to one of the conductors; the pull rod passes through the other end of the conductor outer cylinder and is connected to another conductor, and is used to drive the magnetic piston to move when there is a dancing displacement difference between the two adjacent conductors; when there is a dancing displacement difference between the two adjacent conductors, the conductor outer cylinder cuts the magnetic flux lines of the moving magnetic piston, realizes the hysteresis damping function and generates heat and consumes energy, so as to suppress the dancing of the conductor; the device and system The magnetic piston moves in and out of the conductor outer cylinder, generating eddy currents on the conductor outer cylinder and releasing Joule heat. Due to the violent dancing process, the line dances greatly in space, and the hysteresis damping limits the displacement of the magnetic piston, showing a strong damping effect, which can effectively control the line dancing. At the same time, the dancing energy of the conductor is effectively converted into electromagnetic eddy currents, which generate heat and are converted into thermal energy under the action of resistance. Since the dancing occurs in the cold winter, the thermal energy can be well dissipated into the air. At the same time, the thermal energy effectively heats the air temperature and reduces the ice thickness of the overhead transmission line, forming a positive feedback, thereby absorbing the energy generated by the dancing of the conductor and effectively reducing the risk of dancing of the overhead transmission line. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of a telescopic damping and anti-dance device provided by the present invention;

[0027] Figure 2 A schematic diagram of the internal structure of a telescopic damping and anti-dance device provided by the present invention;

[0028] Figure 3 A schematic diagram of the connection of a telescopic damping and anti-dance device provided by the present invention;

[0029] Figure 4 A schematic diagram of the structure of a magnetic piston in a telescopic damping and anti-dance device provided by the present invention;

[0030] Figure 5 A schematic structural diagram of a telescopic damping and anti-dance system provided by the present invention;

[0031] Figure 6 A schematic diagram of the connection of a telescopic damping and anti-dance system provided by the present invention;

[0032] Figure 7 A schematic structural diagram of a middle connecting plate in a telescopic damping and anti-dance system provided by the present invention;

[0033] Figure 8 A schematic structural diagram of an end connection plate in a telescopic damping and anti-dance system provided by the present invention;

[0034] Among them, 1. wire; 2. conductor outer tube; 3. elastic telescopic part; 4. magnetic piston; 5. pull rod; 6. first lifting ring; 7. dumbbell-shaped fixing seat; 8. magnetic ring; 9. second lifting ring; 10. first pull ring; 11. third lifting ring; 12. second pull ring; 13. insulating connector; 14. middle connecting plate; 15. fourth lifting ring; 16. end connecting plate; 17. fifth lifting ring; 18. sixth lifting ring; 19. telescopic damping and anti-dance device. DETAILED DESCRIPTION

[0035] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.

[0036] Embodiment 1:

[0037] The present invention provides a telescopic damping and anti-dance device, such as Figures 1 to 3 As shown, the device is hung between two adjacent conductors 1 of an overhead transmission line, and the device comprises:

[0038] A conductor outer cylinder 2, an elastic telescopic member 3, a magnetic piston 4 and a pull rod 5 which are arranged in the conductor outer cylinder 2 and connected in sequence;

[0039] One end of the conductor outer tube 2 is connected to one of the wires 1;

[0040] One end of the pull rod 5 away from the magnetic piston 4 passes through the other end of the conductor outer tube 2 and is connected to another of the wires 1, so as to drive the magnetic piston 4 to move when there is a dancing displacement difference between two adjacent wires 1;

[0041] When there is a dancing displacement difference between two adjacent conductors 1, the conductor outer tube 2 cuts the magnetic flux lines of the moving magnetic piston 4, realizes the hysteresis damping function and generates heat and consumes energy to suppress the dancing of the conductors.

[0042] Electromagnetic eddy currents are closed loops generated in a conductor when a moving magnetic field intersects a metal conductor. Hysteresis damping refers to the resistance a magnetic object encounters when it moves or rotates in a magnetic field. This is mainly caused by the eddy currents or magnetization induced by the magnetic object in the magnetic field. These eddy currents or magnetization will produce a reverse magnetic field that hinders the movement of the object. The characteristics of magnetic damping that hinder the movement of an object are used to consume the energy of the dance and suppress the dance.

[0043] The device uses the telescopic movement of the magnetic piston 4 in the conductor outer cylinder 2 to generate electromagnetic eddy currents on the conductor outer cylinder 2, resulting in Joule heat release. Due to the violent dancing process, the line dances greatly in space, and the hysteresis damping has a limiting displacement effect on the magnetic piston 4, which is displayed as a strong damping effect, which can effectively control the line dancing; at the same time, it effectively converts the dancing energy of the conductor into electromagnetic eddy currents, and the electromagnetic eddy currents generate heat and are converted into thermal energy under the action of resistance. Since the dancing occurs in the cold winter, the thermal energy can be well dissipated into the air. At the same time, the thermal energy effectively heats the air temperature and reduces the ice thickness of the overhead transmission line, forming a positive feedback. Without complex calculation design, it can absorb a large amount of energy generated by the dancing of the conductor, effectively reducing the risk of dancing of the overhead transmission line while reducing the number of devices installed, avoiding increasing the load-bearing burden of the line.

[0044] In addition, the conductor outer tube 2 can prevent rainwater from contacting the magnetic piston 4 and the elastic telescopic part 3. At the same time, the magnetic piston 4 relies on the dancing difference of adjacent wires 1 to perform telescopic movement. The kinetic energy brought by the dancing difference of adjacent wires 1 is relatively large, which makes the device fearless of freezing, with low operation and maintenance difficulty and good use effect.

[0045] The core component design of the device lies in the selection and calculation of the magnetic piston 4 and the conductor outer tube 2. The magnetic piston 4 reciprocates in the conductor outer tube 2, which will generate resistance. The calculation formula is as follows:

[0046]

[0047] Wherein, F is the motion resistance of the magnetic piston, r is the integral radius; v is the motion speed of the magnetic piston; σ is the conductivity of the conductor outer cylinder 2; δ is the wall thickness of the conductor outer cylinder 2; r in is the inner radius of the conductor outer tube 2, r out is the outer radius of the conductor outer tube 2; the negative sign indicates that the direction of resistance is opposite to the direction of movement of the magnetic piston; B r (r,z) is the incoming magnetic flux density at any point in space, calculated as:

[0048]

[0049] Where μ0 is the vacuum permeability, τ m is the wall thickness of the magnetic ring 8 in the magnetic piston, R m is the radius of the magnetic ring 8 in the magnetic piston; I is the equivalent current, z is the movement direction of the magnetic piston 4, that is, the central axis of the conductor outer cylinder 2. The calculation process here can be calculated by using the length of the conductor outer cylinder 2. z′ is the integral variable in the z direction, K(k) is the first kind of complete elliptic integral, and E(k) is the second kind of complete elliptic integral.

[0050] I=Mτ m (3)

[0051]

[0052] Wherein, M is the magnetic induction intensity per unit length, k is the ellipse mode, θ is the integral angle, and θ ranges from 0 to 2π.

[0053] The energy W consumed by the magnetic piston movement is calculated as follows:

[0054]

[0055] Among them, S1 is the starting value of the magnetic piston 4 stroke, S2 is the ending value of the magnetic piston 4 stroke, and S is the stroke of the magnetic piston 4.

[0056] When selecting the size of the magnetic piston 4 and the conductor outer tube 2, W can be determined according to different energy consumption requirements. The length of the conductor outer tube 2 and the moving distance of the magnetic piston 4 are determined according to the insulating connector 13 and the insulating electrical distance. At the same time, the wall thickness δ and the inner and outer diameters r of the conductor outer tube 2 are determined. in and r out It can be calculated by formula (1) and (2). For the case of high energy consumption, a combination of multiple devices can be selected.

[0057] In this embodiment, the conductor outer cylinder 2 is made of non-magnetic metal material with good electrical conductivity, such as copper, aluminum or aluminum alloy. Based on the hysteresis damping principle, the magnetic piston 4 has a strong damping effect when moving in the conductor outer cylinder 2.

[0058] The two adjacent wires 1 include one or more of the following:

[0059] Two adjacent phase conductors, two adjacent pole conductors, adjacent ground conductor and phase conductor, adjacent ground conductor and pole conductor, adjacent phase conductor and pole conductor.

[0060] In order to extend the service life of the device and avoid torsional damage to the device caused by asynchronous dancing of the wire, the internal structure of the device adopts various active connection methods to improve the flexibility and wear resistance of the device;

[0061] Specifically, the connection modes among the conductor outer cylinder 2, the elastic telescopic member 3, the magnetic piston 4 and the pull rod 5 include one or more of the following:

[0062] Chain connection, universal joint, ball and socket connection, hinged connection.

[0063] In this embodiment, the elastic telescopic member 3 includes a double-hook spring.

[0064] In this embodiment, the double hook spring is made of high-strength elastic steel and serves to restore the position of the magnetic piston 4.

[0065] In this embodiment, the inner diameter of the conductor outer tube 2 is not less than the outer diameter of the double-hook spring; when the inner diameter of the conductor outer tube 2 is equal to the outer diameter of the double-hook spring, the movement direction of the double-hook spring can be better controlled to prevent the inclination of the pull rod 5 from affecting the telescopic movement effect of the magnetic piston 4, but a lubricating layer needs to be coated on the inner wall of the conductor outer tube 2 and the outer surface of the double-hook spring to prevent the double-hook spring from getting stuck when it is telescoping.

[0066] In this embodiment, one end of the double-hook spring is penetrated on the inner wall of the conductor outer tube 2, and the other end is penetrated on the magnetic piston 4. A first hanging ring 6 for the double-hook spring to penetrate is provided on the inner wall of the conductor outer tube 2, so as to realize the ring chain connection between the elastic telescopic member 3 and the conductor outer tube 2 and the magnetic piston 4 at its two ends.

[0067] The ring chain connection has high flexibility, good durability, reliability and economy, and can adapt to the torsion caused by the asynchronous dancing of the wires, avoiding the twisting of the connection points inside the device and between the device and the wires, thereby extending the service life of the device.

[0068] In this embodiment, the hook structures at both ends of the double hook spring have smaller openings or no openings to prevent the magnetic piston 4 from falling out during movement.

[0069] like Figure 4 As shown, the magnetic piston 4 includes a dumbbell-shaped fixing seat 7 and a magnetic ring 8 sleeved on the central axis of the dumbbell-shaped fixing seat 7, and the two ends of the dumbbell-shaped fixing seat 7 are respectively connected to the elastic telescopic member 3 and the pull rod 5.

[0070] The magnetic ring 8 is a ring-shaped permanent magnet. The two end flat structures of the dumbbell-shaped fixing seat 7 are detachable. After the magnetic ring 8 is sleeved on the central axis of the dumbbell-shaped fixing seat 7, the two end flat structures are installed to press the magnetic ring 8.

[0071] Second hanging rings 9 are provided at both ends of the dumbbell-shaped fixing seat 7, and two second hanging rings 9 are respectively passed through the double-hook spring and the pull rod 5. A first pull ring 10 for passing the second hanging ring 9 is provided at one end of the pull rod 5 close to the magnetic piston 4, so as to realize the ring chain connection between the magnetic piston 4 and the elastic telescopic parts 3 and the pull rod 5 at both ends.

[0072] The outer diameter of the first pull ring 10 is not less than the diameter of the through hole on the conductor outer tube 2 for the pull rod 5 to pass through, so as to avoid the magnetic piston 4 from coming out due to the large difference in dancing displacement between the two adjacent wires 1, thereby avoiding the destruction of the elastic force of the double-hook spring and extending the service life of the device.

[0073] The connection between the conductor outer tube 2 and the conductor 1 includes one or more of the following:

[0074] Chain connection, universal joint, ball and socket connection, hinged connection.

[0075] The conductor outer tube 2 is connected to the wire 1 through an insulating connector 13 .

[0076] A third hanging ring 11 is provided on the outer wall of one end of the conductor outer cylinder 2 , and the third hanging ring 11 is passed through the insulating connector 13 to achieve a ring-chain connection between the conductor outer cylinder 2 and the wire 1 .

[0077] The connection between the pull rod 5 and the wire 1 includes one or more of the following:

[0078] Chain connection, universal joint, ball and socket connection, hinged connection.

[0079] The pull rod 5 is connected to the wire 1 via an insulating connector 13 .

[0080] A second pull ring 12 is provided at one end of the pull rod 5 passing through the conductor outer tube 2, and an insulating connector 13 is connected to the other wire 1. The second pull ring 12 is passed through the insulating connector 13 to achieve a ring-chain connection between the pull rod 5 and the wire 1.

[0081] The insulating connector 13 includes one or more of the following:

[0082] Insulator strings and spacer rods.

[0083] The galloping of overhead transmission lines is manifested as low-frequency and large-scale spatial movement of the ground wire. The conductor and the ground wire cannot gallop at the same time, and there is spatial displacement between them. Installing this device between the two phases, two poles or ground wires of the overhead transmission line will effectively convert kinetic energy into electromagnetic eddy currents. The eddy currents generate heat and are converted into thermal energy under the action of resistance. Since the galloping occurs in the cold winter, the thermal energy can be well dissipated into the air. At the same time, the thermal energy effectively heats the air temperature, reduces the thickness of ice on the overhead transmission line, and forms positive feedback. Using this device to absorb the energy generated by the movement of the line will effectively reduce the risk of galloping of overhead transmission lines.

[0084] Embodiment 2:

[0085] Based on the same inventive concept, the present invention also provides a telescopic damping and dance suppression system, such as Figure 5 and Figure 6 As shown, at least one of the aforementioned telescopic damping and dance-suppressing devices 19 is used to form a device group; the system includes a plurality of the device groups connected in series;

[0086] The device groups located at both ends of the plurality of device groups are respectively connected to two adjacent conductors 1 of the overhead transmission line.

[0087] The multiple telescopic damping and anti-dance devices 19 in the device group are arranged in parallel, such as three or four telescopic damping and anti-dance devices 19 in parallel, to increase the damping and consume the dancing energy; to ensure that the force on the device is not eccentric, the multiple telescopic damping and anti-dance devices 19 are arranged in parallel with a centrally symmetrical structure.

[0088] It should be noted that the number of telescopic damping and anti-dance devices 19 and device groups is set according to the dancing level of the conductor. The higher the dancing level, the more telescopic damping and anti-dance devices 19 are designed.

[0089] The number of telescopic damping and anti-dance devices 19 and device groups also needs to be set according to space conditions. The space conditions are reflected in: the higher the voltage level of the overhead transmission line, the larger the distance between two adjacent conductors, or the smaller the distance between compact conductors, and whether to connect in parallel or in series is determined based on the distance between the two conductors.

[0090] Multiple systems can be deployed in one section of overhead transmission lines as required, preferably at the peak or trough of the maximum amplitude vibration mode.

[0091] The number of the telescopic damping and anti-dance devices 19 in the plurality of device groups may be equal or unequal, and the overall structure may be centrally symmetrical.

[0092] Two adjacent device groups are connected via a middle connecting plate 14;

[0093] The middle connecting plate 14 not only connects two adjacent device groups, but also serves as a connecting device for a plurality of parallel-connected telescopic damping and anti-dance devices 19 in the device group, thereby realizing parallel connection of a plurality of telescopic damping and anti-dance devices 19 .

[0094] like Figure 7 As shown, at least one connecting member is respectively provided on both sides of the middle connecting plate 14 , and the connecting member is connected to the conductor outer cylinder 2 or the pull rod 5 in the telescopic damping and anti-dance device 19 .

[0095] The connection method between the connecting piece and the conductor outer tube 2 or the pull rod 5 includes one or more of the following:

[0096] Chain connection, universal joint, ball and socket connection, hinged connection.

[0097] In this embodiment, the connecting member is a fourth lifting ring 15 , and the fourth lifting ring 15 is chain-connected to the third lifting ring 11 or the second pull ring 12 .

[0098] In order to ensure a reasonable connection space, the fourth lifting rings 15 on both sides of the middle connection plate 14 are arranged perpendicular to each other.

[0099] like Figure 8As shown, the device groups at both ends of the plurality of device groups connected in series are connected to the conductor 1 via an end connection plate 16 .

[0100] One side of the end connection plate 16 is connected to the conductor outer tube 2 or the pull rod 5 ; the other side of the end connection plate 16 is connected to the wire 1 through an insulating connector 13 .

[0101] The insulating connector 13 includes one or more of the following:

[0102] Insulator strings and spacer rods.

[0103] The connection methods between the end connection plate 16 and the conductor outer tube 2, the pull rod 5 and the insulating connector 13 include one or more of the following:

[0104] Chain connection, universal joint, ball and socket connection, hinged connection.

[0105] In this embodiment, a fifth hanging ring 17 for connecting the telescopic damping and anti-dance device 19 is provided on one side of the end connecting plate 16, and a sixth hanging ring 18 connected to the conductor 1 is provided on the other side. The fifth hanging ring 17 is connected to the third hanging ring 11 or the second pull ring 12, and the sixth hanging ring 18 is connected to the insulating connecting piece 13 chain.

[0106] In order to ensure a reasonable connection space, the fifth lifting ring 17 and the sixth lifting ring 18 are arranged perpendicular to each other.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit its protection scope. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the present invention, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the application, but these changes, modifications or equivalent substitutions are all within the protection scope of the claims of the present invention.

Claims

1. A telescopic damping and anti-dance device, characterized in that: The device is hung between two adjacent conductors (1) of an overhead power transmission line, and comprises: a conductor outer cylinder (2), an elastic expansion member (3), a magnetic piston (4) and a pull rod (5) which are arranged in the conductor outer cylinder (2) and are connected in sequence; One end of the conductor outer tube (2) is connected to one of the conductors (1); One end of the pull rod (5) away from the magnetic piston (4) passes through the other end of the conductor outer tube (2) and is connected to another of the wires (1) so as to drive the magnetic piston (4) to move when there is a dancing displacement difference between two adjacent wires (1); When there is a dancing displacement difference between two adjacent conductors (1), the conductor outer cylinder (2) cuts the magnetic flux lines of the moving magnetic piston (4), realizes the hysteresis damping function and generates heat and consumes energy, so as to suppress the dancing of the conductors.

2. A telescopic damping and anti-dance device as claimed in claim 1, characterized in that: The magnetic piston (4) comprises a dumbbell-shaped fixing seat (7) and a magnetic ring (8) sleeved on the central axis of the dumbbell-shaped fixing seat (7), and the two ends of the dumbbell-shaped fixing seat (7) are respectively connected to the elastic telescopic member (3) and the pull rod (5).

3. A telescopic damping and anti-dance device as claimed in claim 1, characterized in that: The elastic telescopic member (3) comprises a double-hook spring.

4. A telescopic damping and anti-dance device as claimed in claim 1, characterized in that: The conductor outer cylinder (2) is connected to the conductor (1) via an insulating connector (13); And / or, the pull rod (5) is connected to the wire (1) via an insulating connector (13).

5. A telescopic damping and anti-dance device as claimed in claim 4, characterized in that: The insulating connector (13) includes one or more of the following: Insulator strings and spacer rods.

6. A telescopic damping and anti-dance system, characterized in that: At least one telescopic damping and anti-dance device (19) as claimed in any one of claims 1 to 3 is used to form a device group; the system includes a plurality of the device groups connected in series; The device groups located at both ends of the plurality of device groups are respectively connected to two adjacent conductors (1) of the overhead power transmission line.

7. A telescopic damping and anti-dance system as claimed in claim 6, characterized in that: The plurality of telescopic damping and anti-dance devices (19) in the device group are arranged in parallel.

8. A telescopic damping and anti-dance system as claimed in claim 6, characterized in that: Two adjacent device groups are connected via a middle connecting plate (14).

9. A telescopic damping and anti-dance system as claimed in claim 8, characterized in that: At least one connecting piece is respectively provided on both sides of the middle connecting plate (14), and the connecting piece is connected to the conductor outer cylinder (2) or the pull rod (5) in the telescopic damping and anti-dance device (19).

10. A telescopic damping and anti-dance system as claimed in claim 6, characterized in that: The device groups at both ends of a plurality of device groups connected in series are connected to the conductor (1) via end connection plates (16).

11. A telescopic damping and anti-dance system as claimed in claim 10, characterized in that: One side of the end connection disk (16) is connected to the conductor outer tube (2) or the pull rod (5); the other side of the end connection disk (16) is connected to the wire (1) via an insulating connector (13).

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