CN101783492A - Anti-galloping damping spacer - Google Patents

Abstract

The embodiment of the invention discloses an anti-galloping damping spacer, which comprises: body frame with connect the fastener on the body frame, the fastener includes at least: the rotation fastener, it includes that the outer line that links to each other with body frame presss from both sides and the package is in the inside and inboard interior fastener that has the chloroprene rubber of outer line clamp, the interior fastener is in the outer line presss from both sides interior axial fixity, and outer fastener central axis is axle free rotation. The anti-galloping damping spacer disclosed by the invention has the following advantages: the rotary inner wire clamp is axially fixed in the outer wire clamp, and the conductor can freely and flexibly rotate in the annular direction, so that the conductor can be more freely and flexibly rotated, the galloping is better prevented, the rotary part is not easily influenced by the environment to break down, and the working reliability of the damping spacer is ensured; the connection mode of the wire clamp and the frame is consistent with the domestic common mode, so that special tools are not needed for installation.

Description

An anti-galling damping spacer bar

technical field

The invention relates to power transmission line equipment, in particular to an anti-galling damping spacer.

Background technique

Transmission line conductor galloping refers to the large-scale low-frequency vibration phenomenon caused by the transmission line under certain climatic conditions, the ice-coated conductor is asymmetrically covered with ice and subjected to transverse wind. Galloping of transmission line conductors is an important factor that threatens the safe operation of high-voltage transmission lines. Galloping damages the transmission line, causing phase-to-phase flash tripping and arc burns. Due to galloping, the wire itself, connecting parts, and iron towers all bear large dynamic loads. When the load exceeds a certain limit, the wires, iron towers, insulator strings and There will be serious damage to the connected parts. There have been large-scale power outages in various parts of our country caused by short-circuit of transmission lines, collapse of towers, and disconnection of wires caused by wire galloping.

At present, the most important means to solve the galloping of transmission line conductors is to install equipment with anti-galling function on the line sections where galloping may occur during the line design or operation stage, so as to prevent problems before they happen.

In order to suppress corona discharge and reduce the electromagnetic impact on the environment on the existing high-voltage lines, it is necessary to use split wires. The conventional damping spacer used on the split wire includes a body frame, a wire clip connected to the body frame, and neoprene inside the wire clip, etc. The wire clip clamps the wire through neoprene, maintains the split structure of the wire, meets the requirements of electrical performance, and prevents damage to the wire. However, the spacer prevents the wire from being freely twisted, and it is easy to form uneven icing, which greatly increases the probability of galloping in the split wire compared with the conventional single wire.

In order to solve the existing problems, it is necessary to take certain measures to make the spacer bar have the function of preventing wire galloping in addition to the existing functions.

Contents of the invention

In view of this, the purpose of the present invention is to provide an anti-galling damping spacer, which can realize the free and flexible rotation of the wire and prevent galloping.

To achieve the above object, the present invention provides the following technical solutions:

An anti-flapping damping spacer bar, comprising: a body frame and a wire clip connected to the body frame, the wire clip at least includes:

Rotating wire clamp, the rotating wire clamp includes an outer wire clamp connected to the body frame and an inner wire clamp wrapped inside the outer wire clamp with neoprene inside, the inner wire clamp is fixed in the outer wire clamp in the axial direction, The central axis of the outer wire clip is the axis of free rotation.

Preferably, the inner wire clamp in the rotating wire clamp is composed of two semi-cylindrical bodies.

Preferably, the inner wire clamp can freely rotate at an unlimited angle in the outer wire clamp.

Preferably, the body frame is a single-plate or double-plate structure.

Preferably, the spacer bar can be used for two or more split wires.

Preferably, the body frame is a regular polygon.

Preferably, the spacer bar includes wire clips having the same number of sides as the regular polygon.

Preferably, the clamps are installed at the ends of the polygon.

Preferably, the wire clips include rotating wire clips and ordinary wire clips.

Preferably, the rotating clamp is not limited to be installed on the windward surface of the body frame.

The invention makes the wires in the wire clips rotate freely by improving the connection form between the wire clips of the spacer bars and the wires. When the conductor is ice-coated on the windward side, the conductor is deflected under the gravity of the uneven ice coating, so that the ice coating of the conductor is relatively uniform, and the upward lifting force is avoided, thereby preventing galloping.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the spacer assembly diagram of the disclosed six-split wire in the embodiment of the present invention;

Fig. 2 is a schematic diagram of the rotatable clamp on the spacer bar disclosed by the embodiment of the present invention;

Fig. 3 is an assembly diagram of the spacer bar of the four-split wire disclosed in the embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The embodiment of the invention discloses an anti-galling damping spacer, which can realize the free and flexible rotation of wires and prevent galloping.

Embodiment one

Fig. 1 is a schematic diagram of the assembly of damping spacer rods disclosed in the present invention in a six-split wire transmission line.

The anti-galling damping spacer provided in the present invention includes: a rotatable wire clamp 1 , an ordinary wire clamp 2 , and a double-plate body frame 3 . The device includes three rotatable wire clamps 1 and three common wire clamps 2, which are evenly distributed on the six ends of the hexagonal body frame 3. The rotatable line clamp 1 is located on the hexagonal end point on the windward side, and the common line clamp 2 is located on the hexagonal end point on the leeward side. The connection part between the rotatable wire clip 1 and the body frame 3 is the same as the connection part between the common wire clip 2 and the body frame 3 .

Compared with the existing spacer, the anti-galling damping spacer provided by the present invention does not change the connection form between the wire clip and the body frame, but realizes the rotation of the wire through the rotatable wire clip 1 . Therefore, no special tools are required during installation, and the installation work is simple and easy.

From Fig. 2, we can see the specific structure of the rotatable wire clip on the anti-galling damping spacer bar provided by the present invention. The inner wire clamp 12 is inside the outer wire clamp 11 but not fixed, and the inner wire clamp 12 is composed of two semi-cylindrical bodies. The cylinder can rotate freely in the outer wire clamp 11. There is neoprene rubber 13 inside the cylinder that forms inner wire clamp 12, and neoprene rubber 13 directly clamps the wire.

Since the outer wire clamp 11 only fixes the inner wire clamp 12 in the axial direction, the inner wire clamp 12 can rotate freely in the circumferential direction relative to the outer wire clamp 11 and is small in size and light in weight. Next, the wire can easily drive the inner wire clamp 12 to deflect freely and flexibly in the outer wire clamp 11. Make the ice coating on the wire uniform and suppress the occurrence of galloping. It can also be seen from Figure 2 that the inner wire clamp 12 is wrapped in the outer wire clamp 11 without being exposed, which can better protect the rotating part from the influence of the external environment, prevent the problem of deflection due to freezing, and ensure the anti-galling function of the damping spacer will not be affected.

Embodiment two

As shown in FIG. 3 , it is a schematic diagram of the assembly of the damping spacer rods disclosed in the present invention in a four-split wire transmission line.

The anti-flapping damping spacer provided in this embodiment includes: a rotatable wire clamp 1 and a double-plate body frame 2 . The device includes four rotatable clamps 1, which are evenly distributed on the four ends of the regular quadrilateral body frame 2.

The structure of the rotatable wire clamp in this embodiment is the same as that in Embodiment 1, and will not be described here again. Compared with the first embodiment, all the clamps in this embodiment are rotatable clamps, which can better suppress the occurrence of galloping.

It should be noted that this embodiment does not limit the scope of application of the anti-galling damping spacer rods disclosed in the present invention, and any two-split or above phase-split wires can be used. Secondly, this embodiment also does not limit the number and installation positions of the ordinary wire clips and the rotatable wire clips in the actual application process, as long as the installed spacers can prevent galloping. Again, this embodiment does not limit the style of the main body frame, which can be a double-plate type or other forms, as long as the normal operation of the spacer bars can be guaranteed.

It can be seen that the anti-galling damping spacers disclosed in the embodiments of the present invention have the following advantages:

1) The rotatable inner wire clamp is fixed axially inside the outer wire clamp, and the structure can be rotated in the circumferential direction, so that the wire can deflect more freely and flexibly, and better prevent galloping;

2) The rotatable inner cable is clamped inside the outer cable clamp, so that the rotating part is not easily affected by the environment and malfunctions, thus ensuring the reliability of the damping spacer;

3) Since the rotating part in the present invention is on the wire clamp, the connection form between the wire clamp and the frame is not changed, and no special tools and means are needed during installation, so the installation is convenient;

4) The volume and weight of the rotatable wire clip on the spacer bar are only slightly increased compared with the common wire clip, which avoids the negative impact produced.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An anti-flapping damping spacer bar, comprising: a body frame and a wire clip connected to the body frame, characterized in that, the wire clip includes at least: The rotating wire clamp includes an outer wire clamp connected to the body frame and an inner wire clamp wrapped inside the outer wire clamp with neoprene inside, and the inner wire clamp is axially fixed in the outer wire clamp to The central axis of the outer wire clip is the free rotation of the shaft. 2. The spacer bar according to claim 1, characterized in that, the inner wire clamp in the rotating wire clamp is composed of two semi-cylindrical bodies. 3 . The spacer bar according to claim 1 , wherein the inner wire clamp is free to rotate at an unlimited angle in the outer wire clamp. 4 . 4. The spacer bar according to claim 1, characterized in that, the body frame is a single-plate or double-plate structure. 5. The spacer bar according to claims 1-4, characterized in that, the spacer bar can be used for two-split or more split wires. 6. The spacer bar according to claim 5, wherein the body frame is a regular polygon. 7. The spacer bar according to claim 6, characterized in that, the spacer bar comprises wire clamps having the same number of sides as the regular polygon. 8. The spacer bar of claim 7, wherein the clamps are mounted on the polygonal ends. 9. The spacer bar according to claim 8, characterized in that, the wire clamps include rotating wire clamps and ordinary wire clamps. 10. The spacer bar according to claim 9, wherein the rotating clamp is not limited to be installed on the windward side of the body frame.

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