RU2660681C1 - Stopper of icing and cable, rope and optical cable oscillation stopper for the non-government and vibrations of wires, currents and optical communication cables overhead power transmission lines - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: stopper consists of an elastic damping element (1), a clamp (2) with a die (3) and fasteners (4). The damping element (1) is connected at its ends to the weights (5, 6) at points 7, 8. The weights (5, 6) are made in the form of curved rods; the clamp (2) is fixed at one end to the elastic damping element (1), while the other end is connected to the wire (cable or optical line communication cable) (9). Rods (5, 6) are curved for radii R₁ and R₂ of different curvature, located in such a way that the distance between the points (10, 11) of the weights (5, 6), which are maximum distanced in a horizontal plane, perpendicular to the longitudinal axis of the wire (cable, optical communication cable) (9), is (5÷150) mm. The ratio of the radii of curvature R₁ and R₂ of the weights (5, 6) is determined within the limits (1.0÷5.0). The weight 5 has a smaller mass compared to the mass of the weight (6), the mass ratio of the weights (5, 6) is within (1.0÷2.0). The ratio of the distance K₁ from the clamp (2) to the weight (5) of a smaller mass to the distance K₂ from the clamp (2) to the weight of a greater mass is within (1.0÷2.0). The developed device generates a torque to the side opposite the torque generated as a result of the uneven deposition of ice, allowing the wire (rope, cable) to retain its original position, resulting in the reduction of the mass of ice and to reduce the risk of dancing.

EFFECT: increase in the effectiveness of stopping ice formation and wire oscillation.

2 cl, 2 dwg

Description

The invention relates to the field of electric power, and in particular to limiters of icing and vibrations of wires, cables and optical communication cables of overhead power lines.

Known limiter of icing and vibrations of the wires of overhead power lines, containing a damper element made in the form of a piece of galvanized steel wire, loads made in the form of curved rods or round pipes rigidly fixed at the ends of the damper element, and a clip fixed to the damper element and connected to wire line [1].

In the practice of using this limiter of icing and vibrations of overhead power lines wires, cases of its failure under wind loads were noted, namely twisting the device around the line wires due to a significant pendulum effect (a large length of the lever from the suspension to straight sections and the entry of the ends of the cargo rods one after another, they created the prerequisites for their swinging with a large amplitude up to hanging on the wires in strong winds).

The closest technical solution to the proposed one is a limiter of icing and vibrations of wires, cables and optical communication cables of overhead power lines, containing an elastic damping element, at least two weights attached to it at the ends, made in the form of curved rods, and a clip fixed one end in the middle of the elastic damping element, and the other connected to a wire, cable or optical cable communication line [2].

This well-known limiter, as shown by the results of field tests, does not allow effective damping of high-frequency oscillations (vibration) and at the same time low-frequency oscillations (dance), especially for optical communication cables of overhead power lines.

The applicant set himself the practical task of developing a limiter of icing and vibrations of wires, cables and optical communication cables of overhead power lines in terms of their technical and operational characteristics, superior to a similar solution to the closest analogue (prototype); in particular, to ensure a significant reduction in the mass of ice formed on wires, cables and optical cables on overhead power lines, to reduce the likelihood of dancing, and to ensure effective damping of wind vibration.

The above positive technical result was achieved due to a combination of essential structural features of the icing limiter and vibrations of wires, cables and optical communication cables of overhead power lines made according to the present invention presented in the following claims: “icing and vibration limiter of wires, cables and optical aerial communication cables power lines containing an elastic damping element attached to it along ontsam at least two loads, embodied as curved bars, and a clamp attached at one end to an elastic damping element and the other connected to a wire cable or an optical cable link; the rods of each load are bent along radii R ₁ and R _{2 of} different curvature, located in such a way that the distance A between the maximum points of the cargo points (5 ÷ 150) mm (max. this ratio of the masses of goods lies in the range (1.0 ÷ 2.0), the ratio of the radii of curvature of the goods is determined within (1.0 ÷ 5.0), and the ratio of the distance K ₁ from the clamp to the load of less weight to the distance K ₂ from clamp to load of greater mass is within (1,0 ÷ 2,0); the loads are curved in the form of arbitrary curves with different radii of curvature. ”

The invention is illustrated by drawings, where in FIG. 1 shows a general view of the icing limiter and the vibrations of wires, cables and optical communication cables of overhead power lines made in accordance with the present invention, a front view perpendicular to the wire (cable, cable); in FIG. 2 is the same as in FIG. 1, side view along the wire (cable, cable).

The inventive limiter of icing and vibrations of wires, cables and optical communication cables of overhead power lines consists of an elastic damping element 1, a clip 2 with a die 3 and fasteners 4. The damping element 1 is connected at its ends with metal loads 5, 6, for example, by pressing points 7, 8. Goods 5, 6 are made in the form of curved rods; the clip 2 is fixed at one end to the elastic damping element 1, and the other is connected to the wire (cable or optical line communication cable) 9.

The rods 5, 6 are bent along radii R ₁ and R _{2 of} different curvature, located so that the distance A (Fig. 2) between the most remote in the horizontal plane perpendicular to the longitudinal axis of the wire (cable, optical communication cable) 9, points 10, 11 loads of 5, 6 is (5 ÷ 150) mm. The ratio of the radii of curvature R ₁ and R _{2 of} goods 5, 6 is determined within (1.0 ÷ 5.0). A variant is possible when goods 5, 6 are bent in the form of arbitrary curves with different radii of curvature.

The load 5 has a smaller mass compared with the mass of the load 6, and the mass ratio of the goods 5, 6 is in the range (1.0 ÷ 2.0).

The ratio of the distance K ₁ from the clamp 2 to the load 5 of lower mass to the distance K ₂ from the clamp 2 to the load of larger mass is in the range (1.0 ÷ 2.0).

The invention works as follows.

When ice is formed on the wire (cable, cable) as a result of uneven ice formation along the perimeter of the wire (cable, cable), the latter rotates around its axes. As a result of this phenomenon, a wall of ice of great thickness is successively formed. The developed device creates a torque directed in the direction opposite to the torque generated as a result of uneven deposition of ice, which allows the wire (cable, cable) to maintain its original position, leading to a decrease in the mass of ice and, accordingly, to reduce the likelihood of dancing. In this case, the effect is achieved when the centers of mass of the cargo are located in the position closest to the vertical plane passing through the axis of the wire (cable, cable). On the other hand, to suppress wind vibration, it is necessary to introduce a damping element into the device and use weights that provide the greatest number of resonant frequencies, which is achieved by manufacturing curved weights of different weights located at different distances from the device clamp.

Information sources

1. Description of the invention to patent No. 2249893, H02G 7/14, decl. 07/30/2003, publ. 04/10/2005. "Limiter of icing and vibrations of wires of overhead power lines of wires of overhead power lines."

2. Description of the invention to patent No. 2602596, H02G 7/14, decl. 10/27/2015, publ. 10/20/2016. "Limiter of icing and vibrations of wires of overhead power lines of wires of overhead power lines."

3. US Patent No. 4,159,393, cl. 174-42 (H02G 7/14), publ. 06/26/1979.

4. US Patent No. 3,400,209, cl. 174-42 (H02G 7/14), publ. 09/03/1968.

5. Description of the invention to patent No. 2045800, (H02G 7/14), decl. 10/27/2015, publ. 10/20/2016.

Claims (2)

1. Limiter of icing and vibrations of wires, cables and optical communication cables of overhead power lines, comprising an elastic damping element, at least two weights attached to it at the ends, made in the form of curved rods, and a clip fixed at one end to an elastic damping element, and the other connected to a wire cable or an optical cable link, characterized in that the rods of each cargo curved R ₁ and R ₂ of different curvature arranged so that rasstoyatsya e And between the most remote in the horizontal plane perpendicular to the longitudinal axis of the wire, cable or optical communication cable, the cargo points are (5 ÷ 150) mm, while the mass ratio of the cargo lies within (1,0 ÷ 2,0), the ratio of the radii of curvature of the cargo is determined within (1.0 ÷ 5.0), and the ratio of the distance K ₁ from the clamp to the load of a smaller mass to the distance K ₂ from the clamp to the load of a larger mass is in the range (1,0 ÷ 2,0). 2. The limiter according to claim 1, characterized in that the loads are curved in the form of arbitrary curves with different radii of curvature.

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