JPS591381Y2 - Spacer damper device for multi-conductor transmission lines - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a spacer damper device for preventing wind-induced vibrations in multi-conductor overhead power transmission lines.

Multi-conductor transmission lines, such as 2-conductor and 4-conductor transmission lines, are connected by spacers placed at a distance, but if wind hits this, the conductors may It is well known that vertical vibrations can cause damage to power lines due to collisions with other obstacles and fatigue due to the vibration of the power lines.

In this case, two horizontally arranged conductors connected by a spacer etc. often perform resonant vibration with a phase of 180°, that is, vertically moving left and right alternately, as this requires less vibration energy. .

The present invention was developed in order to effectively suppress the vibration of multi-conductor power transmission lines due to the above-mentioned wind, and it is an object of the present invention to provide a spacer damper device in which the spacer has a large vibration prevention function.

As shown in the embodiments of FIG. 1 (2 conductors) and FIG. 2 (4 conductors), the present invention comprises a plurality of wire gripping clamps 1, 1 for gripping each conductor 10, 10... ······and,
It consists of two plate-shaped frames 2, 2 that connect them, and between the two plate-shaped frames 2, 2, the electric wire gripping clamps 1, 1... are connected with conductive rubber 3, 3.・・・・・・
This spacer damper device for a multi-conductor power transmission line is characterized in that the spacer damper device is connected to the multi-conductor power transmission line by attaching weights 4 to the plate-shaped frame 2 alternately eccentrically to one side of each device.

Figures 1 and 2 are diagrams showing an embodiment of the present invention.
The figure shows the case of 2 conductors, and Fig. 2 shows the case of 4 conductors, and each figure A is a front view and each figure is a side view.

The electric wire gripping clamp 1 has one end as a wire gripping part 5 that grips the electric wire 10, and the other end as a connecting part 6 that is held between two plate-shaped frames 2 and 2 and connected with a bolt 7.

The plate-like frame 2 has a shape convenient for connecting the conductors 1.

In Figure 1, it has a rectangular shape, and there are wire gripping clamps on both ends.
A bolt hole 8 is provided for connecting the two.

Further, in FIG. 2, the plate-like frame 2 has a rectangular shape, and four bolt holes 8 for connecting the wire gripping clamp 1 are provided near the four ends.

In addition, as shown in FIG.
(Unnecessary parts) may be provided to reduce the weight.

A connecting portion 6 of the wire gripping clamp 1 is connected by a bolt 7 between the two plate-shaped frames 2, 2 via a conductive rubber 3 provided with an outer layer that blocks ultraviolet rays, for example.

The conductive rubber is used here to absorb vibrations and to prevent insulation between the clamp 1 and the plate-shaped frame 2.

A weight 4 is mounted on the plate frame 2 eccentrically to one side from the center.
is installed.

As a result, as shown in FIG. 3, for example, the center of gravity W of the damper spacer device attached to the power transmission line is
It will be eccentric to one side from the center between 0 and 0.

Note that the weight 4 does not necessarily have to be separate from the plate-shaped frame 2, as shown in FIGS. It may be eccentric.

In order to attach the spacer damper device according to the present invention configured as described above to a multi-conductor power transmission line, for example, as shown in FIG.
As shown in the figure, each device is installed at a predetermined distance so that its eccentric direction is reversed.

The spacer damper device of the present invention installed in this manner has the following effects.

(a) a plurality of wire gripping clamps that grip each conductor;
The electric wire gripping clamp is connected between the two plate frames via conductive rubber, and the wire holding clamp is connected between the two plate frames to connect them. Since the weights of each device are attached alternately eccentrically to one side, the energy absorption effect of the conductive rubber can be achieved.
The conductor between the spacer damper devices is twisted with the center of the spacer 4 as a base point, thereby generating frictional force between the conductor hot wires, resulting in slight breeze vibration and subspan vibration (with the spacer damper device field as the span). It has the effect of absorbing vibrations) and emphasizing the vibrations of power transmission lines.

(b) Also, due to the above-mentioned twist and weight eccentricity, the vibration phases between the elementary conductors that control the double conductor are different, so they interfere with each other through the spacer damper device, disrupting the shape and reducing the vibration caused by the wind. has the effect of attenuating

[Brief explanation of the drawing]

FIGS. 1 and 2 are views showing embodiments of the present invention in the case of a two-conductor flexible power transmission line and a four-conductor power transmission line, respectively, in which FIG. 1 is a front view and the mouth view is a side view. FIG. 3 is a perspective view showing the embodiment of the present invention attached to a two-conductor overhead power transmission system. 1... Electric wire gripping clamp, 2... Plate frame, 3... Conductive rubber, 4...
Weight, 5... Wire gripping part, 6... Connection part, 7... Bolt, 8... Bolt hole,
9... Blank space, 10... Conductor, W...
...center of gravity.

Claims (1)

[Scope of utility model registration request] It consists of a plurality of wire gripping clamps for gripping each conductor, and two overlapping plate frames for connecting them, and the wire gripping clamp is made of conductive rubber between the two plate frames. A spacer damper device for a multi-conductor power transmission line, characterized in that the spacer damper device is connected to the plate-shaped frame through the plate-like frame, and a weight is attached to the plate-shaped frame so that each device is alternately eccentric to one side.