CN109980592B - Wire anti-galloping device - Google Patents

Abstract

The utility model provides a wire anti-galloping device, prevents galloping subassembly, vortex including the damping and prevents galloping subassembly and fixed subassembly, its characteristics are: the damping prevents waving the subassembly with the vortex prevents waving the subassembly and arranges in inside the fixed subassembly, the left end that the damping prevented waving the subassembly links firmly with the left end of fixed subassembly, and the right-hand member that the damping prevented waving the subassembly links firmly with the right-hand member of fixed subassembly, and the left end and the right-hand member of fixed subassembly all link firmly with the wire, and the vortex prevents waving the subassembly winding on the wire. The damping anti-galloping component can be automatically compressed and stretched according to the galloping of the conductor, and the split conductor can be restored to the original position by the elastic force of the rubber spring, so that the automatic resetting of the split conductor of the power transmission line is realized; the turbulence anti-galloping component can generate turbulence effect on a flow field, change the flow field characteristics around the lead and avoid the turbulence line from resonating with the lead, thereby reducing the galloping probability of the power transmission line and improving the safety and reliability of the line; has the advantages of reasonable structure, convenient installation, excellent performance, safety, reliability and low cost.

Description

A wire anti-dancing device

technical field

The invention relates to the technical field of transmission lines, and is an anti-dancing device applied to split conductors of overhead transmission lines.

Background technique

As an important facility for the transmission, regulation and distribution of electrical energy in the power system, transmission lines have become more and more complex with the increase of power transmission distance and capacity, which will inevitably make the safe and stable operation of transmission lines more vulnerable. The safe and reliable operation of the power grid is closely related to the transmission line.

The galloping of overhead power lines seriously threatens the safe operation of power transmission systems. The galloping of ultra-high voltage transmission wires is a self-excited vibration of low frequency (about 0.1Hz to 3 Hz) and large amplitude (about 5 times to 300 times of the diameter of the transmission line), in the form of one or more half-waves within the span. Vibration characteristics, which belong to a class of problems in aerodynamic instability. When galloping occurs, the wire will produce complex coupled vibrations in three directions: horizontal, vertical and torsion, and the mechanism is extremely complicated. The hazard of lead galloping depends on the duration of lead galloping, the severity of the lead galloping and the structure of the lead. The hazards of transmission line galloping include: the occurrence of flashover leading to disconnection of system circuit breakers and wire arc burns, including wire damage, insufficient wire-to-ground distance, loosening of tower bolts, cumulative galloping damage resulting in fatigue damage to key parts of the tower, jumper connection Fatigue damage at place, insulator suspension point fatigue damage, insulator string damage, spacer bar and anti-vibration hammer damage, etc. The power equipment widely used on the transmission line has a weak ability to prevent the transmission line from galloping, and the anti-dancing effect is not obvious. The destruction of the transmission line will also lead to the paralysis of the power supply system, which will not only cause major economic losses, but also cause secondary disasters such as fires, posing a major threat to the life and property of the society and the people. The damage caused by galloping of transmission lines requires a large amount of line repairs every year, and these repairs require a lot of manpower and financial resources.

The existing damping connection type multi-split wire spoiler and dancer includes: a frame and a wire clip arranged on it that is perpendicular to its axial direction and arranged outward; an inner frame and a damping device are arranged on the same plane inside the frame. , a fixed column is arranged in the axial direction of the frame, and a spoiler line is wound around the side of the fixed column. However, because the spoiler wire is wound on the fixed column, it does not directly disturb the flow of each wire; the damping device is set in a relatively narrow frame, and the damping effect of the wind damping sheet is very small. The dance effect is not good, which directly affects the safety of the transmission line.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to substantially improve the existing technology in view of the problems existing in the prior art, and to provide a wire dance prevention device with reasonable structure, convenient installation, superior performance, safety, reliability and low cost .

The technical solution adopted to solve the technical problem is: a wire anti-dancing device, which includes a damping anti-dancing component, a spoiler anti-dancing component and a fixing component, and is characterized in that: the damping anti-dancing component and the spoiler anti-dancing component The component is placed inside the fixed component, the left end of the damping and anti-dancing component is fixedly connected with the left end of the fixed component, the right end of the damping and anti-dancing component is fixedly connected with the right end of the fixed component, and the left and right ends of the fixed component are fixedly connected with the wire to prevent interference. The anti-drag assembly is wrapped around the wire.

The fixing assembly includes: left and right opposite split wire spacers and a plurality of connecting plates with holes, and each support arm of the split wire spacers is fixed with a hole connecting plate through bolts.

The damping and anti-dancing assembly includes: a high-strength spring, a spring hook, and a turnbuckle screw. Both ends of the high-strength spring are connected to one end of the respective turnbuckle screw through the respective hooked spring hooks, and the other end of the turnbuckle screw is connected to the belt. The hole connecting plate 3 is fixedly connected.

The flower basket screws are electroplated and forged oo-shaped flower basket screws.

The high-strength spring is a rubber spring.

The spoiler and anti-dance assembly includes: several rubber rings are sleeved on the spoiler line at an equal distance, and the spoiler line on which the several rubber rings are sheathed is then wound on the wire.

The spoiler wire is a spiral PVC wire.

The rubber ring is a ductile tubular rubber ring.

A wire dance prevention device of the present invention is a new type of wire dance prevention device, and its beneficial effects are reflected in:

1. Due to the installation of the damping and anti-dancing components, when the split wires of the transmission line undergo a certain displacement and torsion, the high-strength springs of the damping and anti-dancing components, especially the high-strength springs, use rubber springs. The rubber springs can automatically compress and adjust according to the dancing of the wires. Stretch, the elastic force of the rubber spring can restore the split wire to its original position, and realize the automatic reset of the split wire of the transmission line;

2. Due to the arrangement of the spoiler and anti-dancing components, the spoiler lines and rubber rings of the spoiler and anti-dancing components can disturb the flow field and change the characteristics of the flow field around the wires. The rubber ring can also prevent the spoiler wires from resonating with the wires. , thereby reducing the probability of galloping of the transmission line and improving the safety and reliability of the line;

3. Since the new conductor anti-dancing device includes the self-reset function of the damping anti-dancing component and the turbulent flow function of the turbulent anti-dancing component, the device can not only significantly reduce the probability of galloping of split conductors, but also ensure the safe and stable operation of the transmission line. ;

4. Since the spoiler component is connected with the wire, the damping and anti-dancing component is connected with the fixing component by the turnbuckle screw, and the fixing component and the wire are fixedly connected by the spacer bar, which can not only make the anti-dancing device connect with the wire stably, but also facilitate disassembly and maintenance;

5. The safe and stable operation of the transmission line can be ensured, and the structure is simple, easy to implement, low in cost and remarkable in effect.

Description of drawings

1 is a schematic front view of a wire anti-dancing device;

Fig. 2 is the A-A cross-sectional schematic diagram of Fig. 1;

Fig. 3 is the B-B cross-sectional schematic diagram of Fig. 1;

4 is a schematic front view of a spoiler and anti-dance assembly;

Figure 5 is a schematic diagram of the connection between the damping and anti-dance component and the fixed component;

In the picture: 1. Spacer bar, 2. Bolt, 3. Connection plate with holes, 4. Turnbuckle screw, 5. Spring hook, 6. High-strength spring, 7. Conductor, 8. Spoiler, 9. Rubber ring.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The specific embodiments described herein are used for the four-split wire anti-dancing device, but are not limited to the devices of the specific embodiments, and are not intended to limit the present invention.

1 to 5, a wire anti-dancing device of the present invention includes: a damping anti-dancing component, a turbulent anti-dancing component and a fixing component, wherein the damping and anti-dancing component and the turbulent anti-dancing component are placed inside the fixed component, The left end of the damping and anti-dancing component is fixedly connected with the left end of the fixed component, the right end of the damping and anti-dancing component is fixedly connected with the right end of the fixed component, the left and right ends of the fixed component are fixedly connected with the wire 7, and the spoiler and anti-dancing component is wound on the wire 7. superior.

The fixing assembly includes the same structure, two four-split wire spacers 1, eight bolts 2 and eight holed connecting plates 3 opposite left and right, and two four-split wire spacers 1 opposite left and right. They are fixedly connected with four holed connecting plates 3 by bolts 2 respectively. Two of the eight holed connecting plates 3 are opposite to left and right in four groups. The holes of the hole connecting plate 3 pass through the holes and are fixedly connected with the spacer rods 1 opposite to the left and right.

The damping and anti-dancing components include thirty-two flower basket screws 4, thirty-two spring hooks 5 and sixteen high-strength springs 6, and each of the sixteen high-strength springs 6 is on the left and right sides of each high-strength spring 6. Each is fixed with a spring hook 5, and every four spring hooks 5 on the left and right sides are respectively connected with a connecting plate 3 with holes through four flower basket screws 4, and every four connecting plates 3 on the left and right sides are respectively connected with. A spacer bar 1 is fixedly connected by a bolt 2, the turnbuckle screw 4 is an electroplated forged oo-shaped turnbuckle screw, and the high-strength spring 6 is a rubber spring.

The spoiler and anti-dancing assembly includes four spoiler wires 8 and several rubber rings 9. The four spoiler wires 8 are respectively wound and connected with four wires 7, and each spoiler wire 8 is equidistantly sleeved with several wires. Rubber ring 9. The spoiler wire 8 is a spiral PVC wire. The rubber ring 9 is a ductile tubular rubber ring.

This embodiment is manufactured using the prior art, and the spacers 1, bolts 2, connecting plates 3 with holes, turnbuckle screws 4, spring hooks 5, high-strength springs 6, spoiler lines 8, and rubber rings 9 are those of the prior art. Commercially available products.

The working process of the conductor anti-dancing device of the present invention is as follows: when the four-split conductor 7 of the transmission line undergoes a certain displacement and torsion, the high-strength spring 6 of the damping anti-dancing component can automatically compress and stretch according to the galloping condition of the conductor, and the four split conductors The wire 7 is restored to its original position, and the automatic reset of the four-split wire 7 of the transmission line is realized; the spoiler and anti-dancing component can disturb the flow field, and the spoiler wire 8 and the rubber ring 9 in the spoiler and anti-dancing component can realize the With the change of the flow field characteristics around the wire, the rubber ring 9 can also prevent the spoiler wire 8 from resonating with the wire 7, thereby reducing the probability of galloping of the transmission line and improving the safety and reliability of the line; the new wire anti-dancing device includes damping The self-reset function of the anti-dancing component and the turbulence function of the turbulent anti-dancing component, so the device can not only significantly reduce the probability of galloping of the four-split conductor, but also ensure the safe and stable operation of the transmission line; 7 is wound and connected, the damping anti-dancing component and the fixing component are connected by the turnbuckle screw 4, and the fixing component and the wire 7 are fixedly connected by the wire clip on the spacer bar 1, so that the wire anti-dancing device of the present invention can be firmly connected with the wire, and It can be easily disassembled and maintained, and has the advantages of reasonable structure, convenient installation, superior performance, safety and reliability, and low cost.

The specific embodiments are only the preferred modes of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention. It should also be regarded as the protection scope of the present invention.

Claims (4)

1. The utility model provides a wire anti-galloping device, it includes damping anti-galloping subassembly, vortex anti-galloping subassembly and fixed subassembly, the damping is prevented galloping the subassembly and is arranged in inside the fixed subassembly, the left end of damping anti-galloping subassembly links firmly with the left end of fixed subassembly, and the right-hand member of damping anti-galloping subassembly links firmly with the right-hand member of fixed subassembly, and the left end and the right-hand member of fixed subassembly all link firmly with the wire, and the vortex is prevented galloping the subassembly winding on the wire, characterized by: the fixing assembly includes: left and right opposed division wire conductor spacer, a plurality of foraminiferous connecting plate, every support arm of division wire conductor spacer has all linked firmly foraminiferous connecting plate through the bolt, the damping anti-galloping subassembly includes: high strength spring, spring hanger, turnbuckle, high strength spring's both ends all are connected with respective turnbuckle's one end through the spring hanger that articulates separately, and turnbuckle's the other end links firmly with foraminiferous connecting plate, the vortex is prevented waving the subassembly and is arranged in inside the fixed subassembly, the vortex is prevented waving the subassembly and is included: a plurality of rubber rings are sleeved on the turbulence wire at equal intervals, and the turbulence wire sleeved with the plurality of rubber rings is wound on the guide wire.

2. The lead anti-galloping device of claim 1, wherein: the high-strength spring is a rubber spring.

3. The lead anti-galloping device of claim 1, wherein: the turbulent flow line is a spiral PVC line.

4. The lead anti-galloping device of claim 1, wherein: the rubber ring is a nodular tubular rubber ring.

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