Anti-galloping device of overhead transmission line

Abstract

The invention provides an anti-galloping device for an overhead power transmission line, and belongs to the technical field of power transmission system protection circuits, and the anti-galloping device is characterized in that a plurality of through holes are uniformly formed in an annular isolation ring; one ends of the plurality of lead wire clamps are fixedly connected with the plurality of through holes through bolts, and the other ends of the lead wire clamps are fixedly connected to the power transmission lead wire; the equipment box is fixedly connected to the bottom of the annular isolation ring through a connecting rod; a plurality of horizontal shock absorbers and vertical shock absorbers are arranged in the equipment box, the horizontal shock absorbers are evenly distributed and fixedly connected to the inner top face of the equipment box, and the axes of the horizontal shock absorbers are perpendicular to the axis of the connecting rod. A plurality of vertical shock absorbers are uniformly distributed and fixedly connected to the inner bottom surface of the equipment box, and the axes of the vertical shock absorbers are parallel to the axis of the connecting rod; the horizontal shock absorber and the vertical shock absorber are combined to form the integral anti-galloping device, energy of horizontal vibration, vertical vibration and torsional vibration is absorbed at the same time, multi-directional shock absorption is carried out, and vibration of a power transmission wire in any direction can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of protection circuits for electric power transmission systems, and in particular to an anti-dance device for overhead transmission lines. Background Art

[0002] In the power transmission system, the safe operation of overhead transmission lines is very important. Under the action of wind, the lift change of asymmetric cross-section conductors causes a low-frequency, large-amplitude self-excited vibration, the frequency range is generally 0.1 ~ 1Hz, and the amplitude ranges from tens of centimeters to more than ten meters. Due to the long dancing time, it will cause fatigue damage to the conductor, which seriously threatens the safe production and operation of overhead transmission lines. In order to reduce the dancing of transmission lines, people have proposed weights, detuned pendulums, dampers, and spoiler anti-dancing devices, and they have also been applied in practice. However, due to the complexity of the actual situation of the dancing of transmission lines, there are horizontal dancing, vertical dancing and torsional dancing in the process of dancing. Therefore, the anti-dancing effect of various anti-dancing measures needs to be further improved. Using technology to solve the problems existing in the power transmission system, based on the theory of dynamics, an anti-dancing device for overhead transmission lines is introduced, which has great practical significance.

[0003] In the prior art, for example, announcement number CN106300198B discloses a double pendulum anti-dance device for an overhead transmission line and a method of use, comprising: a wire clamp, a small bolt, an annular isolation ring, a short connecting rod, a resonant pendulum damper, and a parameter excitation pendulum damper, wherein one end of the wire clamp is fixedly connected to the transmission wire, and the other end is evenly fixedly connected to the annular isolation ring through small bolts, and the number of wire clamps matches the number of transmission lines; a plurality of through holes are evenly distributed on the annular isolation ring, and two short connecting rods are arranged at the bottom of the annular isolation ring, the angle between the two short connecting rods is α, and the symmetry axis of the short connecting rod passes through the center of the annular isolation ring, and the bottom end of the short connecting rod is connected to the resonant pendulum damper, and the resonant pendulum damper swings back and forth around the center of the split wire to absorb the vibration energy of the transmission wire and reduce the vibration of the transmission wire; the advantage is that the resonant pendulum damper and the parameter excitation pendulum damper are combined together to form an integral double pendulum anti-dance device, which can simultaneously reduce horizontal vibration, vertical vibration and torsional vibration. However, the bending radius of the long arc pipe of the parameter excitation pendulum damper in this invention is 4 times the bending radius of the short arc pipe of the resonant pendulum damper. The bending radius of the long arc pipe of the parameter excitation pendulum damper is large, occupies a large space, and is inconvenient to use in practice. For example, the announcement number: CN104836183B discloses an annular multi-split vibration damping and anti-dance device, including a sealed annular tube, a plurality of wire clamps are arranged on the outer surface of the annular tube, a damping and shock absorbing system is arranged in the annular tube, and the annular tube is filled with antifreeze and anti-corrosion liquid. This invention completes the integrated design of the spacer rod and the multi-split anti-dance device from the structural design. The damping and shock absorbing system arranged in the sealed annular tube can, on the one hand, use its own weight to suppress the vertical vibration amplitude of the wire to a certain extent, and prevent the wire from being excessively deformed and causing excessive tension load; on the other hand, the damping and shock absorbing system can resonate before the transmission wire, consume system energy, and thus reduce the degree of torsion and vibration. However, for the vibration of the transmission wire in the vertical and horizontal directions, the vibration reduction effect is not obvious. For example, the announcement number: CN101944713B discloses a split wire anti-dancing device, including: a bracket, on which wire clamps are evenly distributed outwardly, characterized in that the bracket is also provided with a cylinder, and a spring and a weight ball are provided inside the cylinder, one end of the spring is connected to the weight ball, and the other end of the spring is connected to the cylinder. The wire clamp and the bracket are rotatably connected via a rotating shaft. The cylinder is closed and connected to the bracket, and the inside of the cylinder is filled with antifreeze liquid; this invention uses a spring mass system to dissipate energy to slow down the dancing, and uses a rotatable setting of the wire clamp so that each sub-conductor of the split wire can be automatically adjusted to balance the ice after being covered with ice to eliminate the dancing; the antifreeze liquid and the spring mass system are used to interact to reduce the vibration in the vertical direction, but it cannot reduce the torsional vibration and the vibration in the horizontal direction. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide an anti-dance device for an overhead power transmission line, which can reduce the problems of horizontal vibration, vertical vibration and torsional vibration.

[0005] The present invention is achieved in that:

[0006] A dance arrester for an overhead power transmission line, the dance arrester comprising: an annular isolating ring, a plurality of wire clamps and an equipment box; a plurality of through holes are evenly provided on the annular isolating ring; one end of the plurality of wire clamps are fixedly connected to the plurality of through holes by bolts, and the other end of the wire clamps is fixedly connected to the power transmission wire; the equipment box is a cylindrical box; the equipment box is fixedly connected to the bottom of the annular isolating ring by a connecting rod, and the connecting rod passes through the equipment box; a plurality of horizontal vibration absorbers and a plurality of vertical vibration absorbers are arranged in the equipment box, and the plurality of horizontal vibration absorbers and the plurality of vertical vibration absorbers are all cylindrical boxes; a plurality of horizontal vibration absorbers are evenly distributed and fixedly connected to the inner top surface of the equipment box, arranged in a circle around the center, and the axis of the horizontal vibration absorber is perpendicular to the axis of the connecting rod; a plurality of vertical vibration absorbers are evenly distributed and fixedly connected to the inner bottom surface of the equipment box, arranged in a circle around the center, and the axis of the vertical vibration absorber is parallel to the axis of the connecting rod.

[0007] The invention has a compact and simple structure and is easy to use. The horizontal vibration absorber and the vertical vibration absorber are combined to form an integrated anti-dancing device, which absorbs the energy of horizontal vibration, vertical vibration and torsional vibration at the same time to perform multi-directional vibration reduction. It can reduce the vibration of the transmission line in any direction and prevent the transmission line from dancing significantly. It can avoid fatigue fracture of the transmission line, avoid the tilting and collapse of the tower, and cause line failure, thereby ensuring the production safety of the transmission line.

[0008] In addition, the anti-dancing device for an overhead power transmission line in the above technical solution provided by the present invention may also have the following additional technical features:

[0009] In the above technical solution, the equipment box is a cylindrical box.

[0010] In the above technical solution, a positioning ring is fixedly connected to the top surface of the equipment box, the positioning ring is sleeved on the connecting rod, and a plurality of horizontal vibration dampers are fixedly connected to the outer surface of the positioning ring.

[0011] In the above technical solution, the horizontal shock absorber includes: a horizontal shock absorber box, multiple horizontal elastic balls and a horizontal bean bag shock absorber; the horizontal shock absorber box is fixedly connected to the top surface of the equipment box; multiple horizontal elastic balls are arranged in the horizontal shock absorber box; the horizontal bean bag shock absorber is arranged in the horizontal shock absorber box, and the horizontal bean bag shock absorber is surrounded by multiple horizontal elastic balls.

[0012] In the above technical solution, the vertical shock absorber includes: a vertical shock absorber box, multiple vertical elastic balls and a vertical bean bag shock absorber; fixedly connected to the inner bottom surface of the equipment box; multiple vertical elastic balls are arranged in the vertical shock absorber box; the vertical bean bag shock absorber is arranged in the vertical shock absorber box, and the vertical bean bag shock absorber is surrounded by multiple vertical elastic balls.

[0013] In the above technical solution, both the horizontal bean bag shock absorber and the vertical bean bag shock absorber are spherical shells, and a plurality of steel balls are arranged in the horizontal bean bag shock absorber and the vertical bean bag shock absorber.

[0014] In the above technical solution, the filling amount of the steel balls in the horizontal bean bag vibration damper and the vertical bean bag vibration damper is 80-85%.

[0015] In the above technical solution, the ratio of the spherical shell radius r2 of the vertical bean bag shock absorber to the spherical shell radius r1 of the horizontal bean bag shock absorber is determined by the following formula:

[0016]

[0017] Where, M1 is the mass of the horizontal bean bag shock absorber in the horizontal shock absorber, M2 is the mass of the vertical bean bag shock absorber in the vertical shock absorber, r1 is the radius of the horizontal bean bag shock absorber, and r2 is the radius of the vertical bean bag shock absorber;

[0018]

[0019] Where, K1 is the contact stiffness between the horizontal bean bag shock absorber and the horizontal elastic ball in the horizontal shock absorber along the axis of the horizontal shock absorber box, and K2 is the contact stiffness between the vertical bean bag shock absorber and the vertical elastic ball in the vertical shock absorber along the axis of the vertical shock absorber box;

[0020]

[0021] In the formula, ω N1 is the natural frequency of the horizontal vibration damper, ω N2 is the natural frequency of the vertical vibration damper;

[0022]

[0023] ω 水平 is the horizontal dancing frequency of the transmission line; ω 导舞 is the dancing frequency of the transmission line;

[0024] When N1 =ω 水平 =ω 导舞 When the horizontal vibration is applied, the horizontal vibration absorber absorbs the vibration energy in the horizontal direction, reduces the horizontal vibration, and prevents the horizontal dancing of the transmission line.

[0025] when When the vertical vibration is applied, the vertical vibration absorber absorbs the vibration energy in the vertical direction, reduces the vertical vibration, and prevents the vertical dancing of the transmission line;

[0026] r2=4r1 (7)

[0027] The ratio of the radius r2 of the spherical shell B in the bean bag shock absorber B to the radius r1 of the spherical shell A in the bean bag shock absorber A is 4.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] (1) Compact and simple structure, easy to use.

[0030] (2) Elastic balls are filled in the horizontal and vertical vibration absorbers. The elastic balls deform to absorb the vibration energy in the horizontal and vertical directions, thereby reducing the horizontal and vertical vibration of the transmission lines.

[0031] (3) Horizontal bean bag shock absorbers are filled with steel balls. The steel balls move and collide with each other, absorbing the vibration energy in all horizontal directions and reducing the horizontal vibration of the transmission line.

[0032] (4) The vertical bean bag shock absorber is filled with steel balls. The steel balls move and collide with each other to absorb the vertical vibration energy and reduce the vertical vibration of the transmission line.

[0033] (5) The horizontal vibration absorber is combined with the vertical vibration absorber to form an integrated anti-dancing device, which can reduce the energy of horizontal vibration, vertical vibration and torsional vibration, perform multi-directional vibration reduction, and prevent the transmission line from dancing in multiple directions.

[0034] (6) It can reduce the vibration of the transmission line in any direction and prevent the transmission line from swinging violently.

[0035] (7) The present invention can avoid fatigue fracture of transmission lines, avoid tilting and collapse of power towers, and cause line failures, thereby ensuring the safety of transmission line production. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 It is a structural diagram of an anti-dancing device for overhead transmission lines;

[0038] Figure 2It is a structural diagram of the annular isolation ring;

[0039] Figure 3 It is the structural diagram of the equipment box;

[0040] Figure 4 Figure a is a side view of the cover of the equipment box, and Figure b is a top view of the cover of the equipment box;

[0041] Figure 5 It is the structural diagram of the horizontal shock absorber;

[0042] Figure 6 It is the structural diagram of the horizontal shock absorber box;

[0043] Figure 7 It is the structural diagram of the horizontal bean bag shock absorber;

[0044] Figure 8 It is the structural diagram of the positioning ring;

[0045] Fig. 9 It is the structural diagram of the vertical shock absorber;

[0046] Fig.10 It is a structural diagram of the vertical shock absorber box;

[0047] Fig.11 It is the structural diagram of the vertical bean bag shock absorber.

[0048] In the figure: 1. annular isolation ring; 11. through hole; 2. wire clamp; 3. connecting rod; 4. equipment box; 41. equipment box cover; 42. equipment box body; 43. equipment box bottom; 44. equipment box through hole; 5. horizontal shock absorber; 51. horizontal shock absorber body; 511. horizontal box cover; 512. horizontal box body; 513. horizontal box bottom; 52. horizontal elastic ball; 53. horizontal bean bag shock absorber; 6. vertical shock absorber; 61. vertical shock absorber body; 611. vertical box cover; 612. vertical box body; 613. vertical box bottom; 62. vertical elastic ball; 63. vertical bean bag shock absorber; 64. steel ball; 7. positioning ring. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] An anti-dancing device for overhead transmission lines, such as Figure 1-11As shown, the anti-dancing device includes: an annular isolation ring 1, a plurality of wire clamps 2 and an equipment box 4; a plurality of through holes 11 are evenly opened on the annular isolation ring 1; one end of the plurality of wire clamps 2 is fixedly connected to the plurality of through holes 11 by bolts, and the other end of the wire clamps 2 is fixedly connected to the power transmission wire; the equipment box 4 is a cylindrical box; the equipment box 4 is fixedly connected to the bottom of the annular isolation ring 1 by a connecting rod 3, and the connecting rod 3 passes through the equipment box 4; a plurality of horizontal vibration dampers 5 and a plurality of vertical vibration dampers 6 are arranged in the equipment box 4, and the plurality of horizontal vibration dampers 5 and the plurality of vertical vibration dampers 6 are all cylindrical boxes; the plurality of horizontal vibration dampers 5 are evenly distributed and fixedly connected to the inner top surface of the equipment box 4, and are arranged in a circle around the center, and the axis of the horizontal vibration damper 5 is perpendicular to the axis of the connecting rod 3; the plurality of vertical vibration dampers 6 are evenly distributed and fixedly connected to the inner bottom surface of the equipment box 4, and are arranged in a circle around the center, and the axis of the vertical vibration damper 6 is parallel to the axis of the connecting rod 3.

[0051] A plurality of through holes 11 are evenly opened on the annular isolation ring 1, and the number of the through holes 11 is determined according to the amount of the transmission line. Then, an equipment box 4 is connected to the bottom of the annular isolation ring 1 through a connecting rod 3, and a plurality of horizontal vibration absorbers 5 are placed on the top surface of the equipment box 4, and a plurality of vertical vibration absorbers 6 are placed on the bottom surface of the equipment box 4, thereby forming an integral anti-dancing device. Then, one end of the wire clamp 2 is fixedly connected to the through hole 11 on the annular isolation ring 1 by a bolt, and the other end of the wire clamp 2 is connected to the transmission line, and then the annular isolation ring 1 is hung on the transmission line, so that the energy of the horizontal vibration, vertical vibration and torsional vibration of the transmission line when dancing can be absorbed, and multi-directional vibration reduction can be performed, which can reduce the vibration of the transmission line in any direction, prevent the transmission line from dancing significantly, avoid fatigue fracture of the transmission line, avoid the tilt and collapse of the tower, cause line failure, and ensure the production safety of the transmission line.

[0052] In an embodiment of the present invention, Figure 1-11 As shown, a positioning ring 7 is fixedly connected to the inner top surface of the equipment box 4 , the positioning ring 7 is sleeved on the connecting rod 3 , and a plurality of horizontal vibration dampers 5 are fixedly connected to the outer surface of the positioning ring 7 .

[0053] In an embodiment of the present invention, Figure 1-11 As shown, the horizontal shock absorber 5 includes: a horizontal shock absorber box 51, a plurality of horizontal elastic balls 52 and a horizontal bean bag shock absorber 53; the horizontal shock absorber box 51 is fixedly connected to the top surface of the equipment box 4; the plurality of horizontal elastic balls 52 are arranged in the horizontal shock absorber box 51; the horizontal bean bag shock absorber 53 is arranged in the horizontal shock absorber box 51, and the horizontal bean bag shock absorber 53 is surrounded by the plurality of horizontal elastic balls 52.

[0054] The horizontal shock absorber 5 is filled with horizontal elastic balls 52, which deform to absorb vibration energy in all horizontal directions; the horizontal bean bag shock absorber 53 moves to absorb vibration energy in all horizontal directions, thereby reducing dancing in all horizontal directions.

[0055] In an embodiment of the present invention, Figure 1-11 As shown, the vertical shock absorber 6 includes: a vertical shock absorber box 61, a plurality of vertical elastic balls 62 and a vertical bean bag shock absorber 63; fixedly connected to the inner bottom surface of the equipment box 4; a plurality of vertical elastic balls 62 are arranged in the vertical shock absorber box 61; the vertical bean bag shock absorber 63 is arranged in the vertical shock absorber box 61, and the vertical bean bag shock absorber 63 is surrounded by a plurality of vertical elastic balls 62.

[0056] The size and mass of the horizontal elastic ball 52 and the vertical elastic ball 62 can be selected according to actual conditions, and sometimes they are the same.

[0057] The vertical bean bag shock absorber 63 moves to absorb vibration energy; the inner cavity of the vertical shock absorber box 61 in the vertical shock absorber 6 is filled with a vertical elastic ball 62, and the vertical elastic ball 62 deforms to absorb vibration energy in the vertical direction, thereby reducing the dancing in the vertical direction.

[0058] In an embodiment of the present invention, Figure 1-11 As shown, the horizontal bean bag vibration damper 53 and the vertical bean bag vibration damper 63 are both spherical shells, and a plurality of steel balls 64 are disposed in the horizontal bean bag vibration damper 53 and the vertical bean bag vibration damper 63 .

[0059] In an embodiment of the present invention, Figure 1-11 As shown, the filling amount of the steel balls 64 in the horizontal bean bag vibration damper 53 and the vertical bean bag vibration damper 63 is 80-85%.

[0060] In an embodiment of the present invention, Figure 1-11 As shown, the ratio of the spherical shell radius r2 of the vertical bean bag vibration absorber 63 to the spherical shell radius r1 of the horizontal bean bag vibration absorber 53 is determined by the following formula:

[0061]

[0062] Wherein, M1 is the mass of the horizontal bean bag vibration absorber 53 in the horizontal vibration absorber 5, M2 is the mass of the vertical bean bag vibration absorber 63 in the vertical vibration absorber 6, r1 is the radius of the horizontal bean bag vibration absorber 53, and r2 is the radius of the vertical bean bag vibration absorber 63;

[0063]

[0064] Wherein, K1 is the contact stiffness between the horizontal bean bag shock absorber 53 and the horizontal elastic ball 52 in the horizontal shock absorber 5 along the axis direction of the horizontal shock absorber box 51, and K2 is the contact stiffness between the vertical bean bag shock absorber 63 and the vertical elastic ball 62 in the vertical shock absorber 6 along the axis direction of the vertical shock absorber box 61;

[0065]

[0066] In the formula, ω N1 is the natural frequency of the horizontal vibration damper 5, ω N2 is the natural frequency of the vertical vibration absorber 6,

[0067]

[0068]

[0069] ω 水平 is the horizontal dancing frequency of the transmission line; ω 导舞 is the dancing frequency of the transmission line;

[0070] When N1 =ω 水平 =ω 导舞 When the horizontal vibration absorber 5 absorbs the vibration energy in the horizontal direction, reduces the horizontal vibration, and prevents the horizontal dancing of the transmission line;

[0071] when When the vertical vibration absorber 6 absorbs the vibration energy in the vertical direction, reduces the vertical vibration, and prevents the vertical dancing of the transmission line;

[0072] r2=4r1 (7)

[0073] The ratio of the radius r2 of the spherical shell B in the bean bag shock absorber B to the radius r1 of the spherical shell A in the bean bag shock absorber A is 4.

[0074] Example

[0075] like Figure 2 As shown, the annular isolating ring 1 has a plurality of evenly distributed through holes 11, the number of through holes 11 is determined by the number of transmission wires, and the outer diameter of the annular isolating ring 1 is Inner diameter The thickness is 10 to 30 mm, and the diameter of the through hole 11 is One end of the wire clamp 2 is fixedly connected to the transmission wire, and the other end is evenly fixedly connected to the annular isolation ring 1 through bolts and nuts passing through the through hole 11. The number of wire clamps 2 matches the number of transmission lines; wherein the wire clamp 2 is made of an insulated aluminum alloy clamp with a specification aperture of The nominal diameter of bolts and nuts is

[0076] like Figure 3 and Figure 4 The equipment box 4 shown in the figure includes: an equipment box cover 41, an equipment box body 42 and an equipment box bottom 43. The equipment box cover 41 and the equipment box bottom 43 are both made of a circular insulating aluminum alloy plate with an outer diameter of The thickness is 1 to 5 mm; the equipment box body 42 is a cylindrical shell structure with an outer diameter of The thickness is 1 to 5 mm; the equipment box cover 41 and the equipment box bottom 42 are welded to the two ends of the cylindrical equipment box body 42, and the equipment box cover 41 and the equipment box bottom 43 are coaxial with the equipment box body 42; an equipment box through hole 44 is arranged at the center of the box cover 41, and the diameter of the equipment box through hole 44 matches the diameter of the connecting rod 3; 2 to 30 horizontal vibration absorbers 5 are evenly welded along the circumferential direction on the inner surface of the equipment box cover 41, and the axis of the horizontal vibration absorber 5 is parallel to the inner surface of the equipment box cover 41.

[0077] like Figure 5 The horizontal vibration absorber 5 shown includes: a horizontal vibration absorber box 51 , a horizontal bean bag vibration absorber 53 and a horizontal elastic ball 52 .

[0078] The horizontal shock absorber 5 is filled with horizontal elastic balls 52, which deform to absorb vibration energy in all horizontal directions; the horizontal bean bag shock absorber 53 moves to absorb vibration energy in all horizontal directions, thereby reducing dancing in all horizontal directions.

[0079] like Figure 6 The horizontal vibration damper box 51 shown in the figure comprises: a horizontal box cover 511, a horizontal box body 512 and a horizontal box bottom 513; the box body 512 is a cylindrical shell structure, made of an insulating aluminum alloy plate, and has an outer diameter of The thickness is 1 to 5 mm, the height is 150 to 750 mm, and the horizontal box cover 511 and the horizontal box bottom 513 are welded at both ends; the horizontal box cover 511 and the horizontal box bottom 513 are both made of circular insulating aluminum alloy plates with an outer diameter of The thickness is 1 to 5 mm. A plurality of horizontal elastic balls 52 and a horizontal bean bag shock absorber 53 surrounded by the horizontal elastic balls 52 are arranged in the inner cavity of the horizontal box body 512. The horizontal elastic balls 52 are made of rubber and have a diameter of

[0080] like Figure 7 The spherical shell of the horizontal bean bag shock absorber 53 shown is a spherical shell structure made of an insulating aluminum alloy plate, and the outer diameter of the sphere is The thickness is 1 to 5 mm; the inner cavity of the spherical shell of the horizontal bean bag shock absorber 53 is provided with 2 to 1000 steel balls 64, the diameter of the steel ball 64 is The horizontal bean bag vibration absorber 53 in the horizontal vibration absorber 5 is filled with steel balls 64, and the filling amount is 80-85%. The steel balls 64 move and collide with each other to absorb the vibration energy in all horizontal directions and reduce the dancing in all horizontal directions.

[0081] like Figure 1 The connecting rod 3 is a cylindrical insulating aluminum alloy long rod with a diameter of The length is 500 to 1500 mm; one end of the connecting rod 3 is welded to the bottom of the annular isolation ring 1, and the other end passes through the equipment box through hole 44 and the positioning ring 7 on the equipment box 4, and is welded to the inner surface of the equipment box bottom 43 of the equipment box 4; 2 to 10 vertical shock absorbers 6 are evenly distributed along the circumferential direction on the inner surface of the equipment box bottom 43, and the axis of the vertical shock absorber 6 is perpendicular to the inner surface of the equipment box bottom 43.

[0082] like Figure 8 The positioning ring 7 shown is a cylindrical shell structure made of insulating aluminum alloy plate with an outer diameter of The height is 50 to 100 mm; the bottom edge of the positioning ring 7 is welded to the inner surface of the equipment box cover 41 on the equipment box 4, the axis is coaxial with the connecting rod 3, and 2 to 30 horizontal vibration dampers 5 are evenly welded on the outer surface of the cylindrical shell of the positioning ring 7, and the axis of the horizontal vibration damper 5 intersects the axis of the positioning ring 7 vertically.

[0083] like Fig. 9 The vertical shock absorber 6 shown includes: a vertical shock absorber box 61, a vertical bean bag shock absorber 63 and a vertical elastic ball 62;

[0084] The vertical bean bag shock absorber 63 moves to absorb vibration energy; the inner cavity of the vertical shock absorber box 61 in the vertical shock absorber 6 is filled with a vertical elastic ball 62, and the vertical elastic ball 62 deforms to absorb vibration energy in the vertical direction, thereby reducing the dancing in the vertical direction.

[0085] like Fig.10 The vertical shock absorber box 61 shown in the figure includes: a vertical box cover 611, a vertical box body 612 and a vertical box bottom 613. The vertical box body 612 is a cylindrical shell structure made of an insulating aluminum alloy plate with an outer diameter of The thickness is 1 to 5 mm, the height is 300 to 750 mm, and the vertical box cover 611 and the vertical box bottom 613 are welded at both ends; the vertical box cover 611 and the vertical box bottom 613 are both made of circular insulating aluminum alloy plates with an outer diameter of The thickness is 1 to 5 mm. A plurality of vertical elastic balls 62 and a vertical bean bag shock absorber 63 surrounded by the vertical elastic balls 62 are arranged in the inner cavity of the vertical box body 612; the vertical elastic balls 62 deform to absorb the vibration energy in the vertical direction; the vertical bean bag shock absorber 63 moves to absorb the vibration energy in the vertical direction.

[0086] like Fig.11 As shown, the spherical shell of the vertical bean bag shock absorber 63 is a spherical shell structure made of an insulating aluminum alloy plate, and the outer diameter of the sphere is The thickness is 1 to 5 mm; 2 to 2000 steel balls 64 are arranged in the inner cavity of the spherical shell of the vertical bean bag shock absorber 63; the vertical bean bag shock absorber 6 in the vertical shock absorber 6 is filled with steel balls 64, and the filling amount is 80 to 85%. The steel balls 64 move and collide with each other to absorb the vibration energy in the vertical direction and reduce the dancing in the vertical direction.

[0087] The ratio of the radius r2 of the spherical shell of the vertical bean bag shock absorber 63 to the radius r1 of the spherical shell of the horizontal bean bag shock absorber 53 is determined by the following formula:

[0088]

[0089] In the formula, M1 is the mass of the horizontal bean bag shock absorber 53 in the horizontal shock absorber 5, M2 is the mass of the vertical bean bag shock absorber 63 in the vertical shock absorber 6, r1 is the radius of the horizontal bean bag shock absorber 53, and r2 is the radius of the vertical bean bag shock absorber 63.

[0090]

[0091] In the formula, K1 is the contact (extrusion) stiffness of the horizontal bean bag shock absorber 53 and the horizontal elastic ball 52 in the horizontal shock absorber 5 along the axis direction of the box 512 (horizontal direction), and K2 is the contact (extrusion) stiffness of the vertical bean bag shock absorber 63 and the vertical elastic ball 62 in the vertical shock absorber 6 along the axis direction of the box 612 (vertical direction).

[0092]

[0093] In the formula, ω N1 is the natural frequency of the horizontal vibration damper 5, ω N2 is the natural frequency of the vertical vibration absorber 6.

[0094]

[0095] ω 水平 is the horizontal dancing frequency of the transmission line; ω 导舞 is the dancing frequency of the transmission line;

[0096] When N1 =ω 水平 =ω 导舞 When the horizontal vibration absorber 5 absorbs the vibration energy in the horizontal direction, reduces the horizontal vibration, and prevents the horizontal dancing of the transmission line;

[0097] when When the vertical vibration absorber 6 absorbs the vibration energy in the vertical direction, reduces the vertical vibration, and prevents the transmission line from dancing vertically; the horizontal bean bag vibration absorber 53 in the horizontal vibration absorber 5 and the vertical bean bag vibration absorber 63 in the vertical vibration absorber 6 are filled with steel balls, and the filling amount is 80-85%.

[0098] r2=4r1 (14)

[0099] The ratio of the radius r2 of the spherical shell in the vertical bean bag damper 63 to the radius r1 of the spherical shell in the horizontal bean bag damper 53 is 4.

[0100] The present invention has a compact and simple structure and is easy to use. The horizontal vibration absorber 5 and the vertical vibration absorber 6 are combined together to form an integrated anti-dancing device, which absorbs the energy of horizontal vibration, vertical vibration and torsional vibration at the same time to perform multi-directional vibration reduction. It can reduce the vibration of the transmission line in any direction and prevent the transmission line from dancing significantly. It can avoid fatigue fracture of the transmission line, avoid the tilting and collapse of the tower, and cause line failure, thereby ensuring the production safety of the transmission line.

[0101] It should be noted that the specific models and specifications of the flat bean bag vibration absorber 53 and the vertical bean bag vibration absorber 63 need to be selected and determined according to the actual specifications of the device, so they will not be described in detail.

[0102] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-dancing device for an overhead transmission line, characterized in that: The anti-dancing device includes: An annular isolating ring (1), wherein a plurality of through holes (11) are evenly arranged on the annular isolating ring (1); A plurality of wire clamps (2), one end of each of the plurality of wire clamps (2) being fixedly connected to the plurality of through holes (11) by means of bolts, and the other end of each of the wire clamps (2) being fixedly connected to a power transmission wire; An equipment box (4), the equipment box (4) being a cylindrical box; the equipment box (4) being fixedly connected to the bottom of the annular isolation ring (1) via a connecting rod (3), and the connecting rod (3) passing through the equipment box (4); A plurality of horizontal vibration dampers (5) and a plurality of vertical vibration dampers (6) are arranged in the equipment box (4), and the plurality of horizontal vibration dampers (5) and the plurality of vertical vibration dampers (6) are all cylindrical boxes; the plurality of horizontal vibration dampers (5) are evenly distributed and fixedly connected to the inner top surface of the equipment box (4), and are arranged in a circle around the connecting rod (3) as the center, and the axis of the horizontal vibration damper (5) is perpendicular to the axis of the connecting rod (3); the plurality of vertical vibration dampers (6) are evenly distributed and fixedly connected to the inner bottom surface of the equipment box (4), and are arranged in a circle around the center of the connecting rod (3), and the axis of the vertical vibration damper (6) is parallel to the axis of the connecting rod (3).

2. The anti-dancing device for overhead power transmission lines according to claim 1, characterized in that: A positioning ring (7) is fixedly connected to the inner top surface of the equipment box (4), the positioning ring (7) is sleeved on the connecting rod (3), and a plurality of horizontal vibration dampers (5) are fixedly connected to the outer surface of the positioning ring (7).

3. The anti-dancing device for overhead power transmission lines according to claim 1, characterized in that: The horizontal vibration damper (5) comprises: A horizontal vibration damper box (51), the horizontal vibration damper box (51) is fixedly connected to the top surface of the equipment box (4); A plurality of horizontal elastic balls (52), wherein the plurality of horizontal elastic balls (52) are arranged in the horizontal vibration damper box (51); A horizontal bean bag shock absorber (53), wherein the horizontal bean bag shock absorber (53) is arranged in the horizontal shock absorber box (51), and the horizontal bean bag shock absorber (53) is surrounded by a plurality of horizontal elastic balls (52).

4. The anti-dancing device for overhead power transmission lines according to claim 3, characterized in that: The vertical vibration damper (6) comprises: A vertical shock absorber box (61) is fixedly connected to the inner bottom surface of the equipment box (4); A plurality of vertical elastic balls (62), wherein the plurality of vertical elastic balls (62) are arranged in a vertical shock absorber box (61); A vertical bean bag shock absorber (63), wherein the vertical bean bag shock absorber (63) is arranged in the vertical shock absorber box (61), and the vertical bean bag shock absorber (63) is surrounded by a plurality of vertical elastic balls (62).

5. The anti-dancing device for overhead power transmission lines according to claim 4, characterized in that: The shells of the horizontal bean bag vibration damper (53) and the vertical bean bag vibration damper (63) are both spherical shells, and a plurality of steel balls (64) are arranged inside the horizontal bean bag vibration damper (53) and the vertical bean bag vibration damper (63).

6. The anti-dancing device for overhead power transmission lines according to claim 5, characterized in that: The filling amount of the steel balls (64) in the horizontal bean bag vibration damper (53) and the vertical bean bag vibration damper (63) is 80-85%.

7. The anti-dancing device for overhead power transmission lines according to claim 6, characterized in that: The ratio of the spherical shell radius r2 of the vertical bean bag vibration damper (63) to the spherical shell radius r1 of the horizontal bean bag vibration damper (53) is determined by the following formula: Wherein, M1 is the mass of the horizontal bean bag vibration absorber (53) in the horizontal vibration absorber (5), M2 is the mass of the vertical bean bag vibration absorber (63) in the vertical vibration absorber (6), r1 is the radius of the horizontal bean bag vibration absorber (53), and r2 is the radius of the vertical bean bag vibration absorber (63); Wherein, K1 is the contact stiffness between the horizontal bean bag shock absorber (53) and the horizontal elastic ball (52) in the horizontal shock absorber (5) along the axis direction of the horizontal shock absorber box (51), and K2 is the contact stiffness between the vertical bean bag shock absorber (63) and the vertical elastic ball (62) in the vertical shock absorber (6) along the axis direction of the vertical shock absorber box (61); In the formula, ω N1 is the natural frequency of the horizontal vibration damper (5), ω N2 is the natural frequency of the vertical vibration damper (6), ω 水平 is the horizontal dancing frequency of the transmission line; ω 导舞 is the dancing frequency of the transmission line; When N1 =ω 水平 =ω 导舞 When the horizontal vibration is applied, the horizontal vibration absorber (5) absorbs the vibration energy in the horizontal direction, reduces the horizontal vibration, and prevents the transmission line from dancing horizontally; when When the vertical vibration is applied, the vertical vibration absorber (6) absorbs the vibration energy in the vertical direction, reduces the vertical vibration, and prevents the transmission line from dancing vertically; r2＝4r1 (7) The ratio of the radius r2 of the spherical shell B in the bean bag shock absorber B to the radius r1 of the spherical shell A in the bean bag shock absorber A is 4.

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