JP4352216B2 - Jumper device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a jumper device. In particular, the present invention relates to a jumper device in which a jumper horn is provided on the jumper wire side and the jumper wire can be prevented from drooping.
[0002]
[Prior art]
In general, a jumper device for a tension steel tower includes a power transmission line connected to both ends of the arm tip of the steel tower via a tension insulator series, and a jumper line that electrically connects the power transmission lines. A pipe-type jumper device is known as an example of this jumper device. This is a configuration using a horizontal pipe member 80 in the middle of the jumper wire 25 as shown in FIG. From the end of the steel tower arm 10, tension insulators 15 are arranged on both sides thereof, and the transmission lines 20 are connected to the ends of the tension insulators 15 via yokes 40. A suspension member 85 for suspending the horizontal pipe member 80 is connected to the yoke 40. One end of the jumper wire 25 is connected to the power transmission line 20 via the retention clamp 45, and the other end is connected to the end of the horizontal pipe member 80.
[0003]
In such a jumper device, various arc horns are provided in order to protect facilities including the insulator series 15 and the power transmission line 20 during a lightning strike. Typically, there are cases where only large arc horns are oppositely installed at both ends of the tension insulator series. However, since each arc horn is large and expensive, the combination of the impulse horn and jumper horn There is also a configuration for miniaturization. For example, the impulse horn 30 on the grounding side is directed downward at the tip of the steel tower arm 10, and the jumper horn 55 is provided upward substantially at the center of the horizontal pipe member 80 (for example, Patent Document 1). A simple arc horn 35 is provided opposite to both ends. During lightning strikes, the flashover is performed between the arc horns 35 and between the impulse horn 30 and the jumper horn 55 to protect the equipment.
[0004]
[Patent Document 1]
JP 2001-157347 A FIG.
[0005]
[Problems to be solved by the invention]
However, although the combination of the impulse horn and the jumper horn described above can be applied to a jumper device having a horizontal material such as a pipe-type jumper device, it is difficult to apply to a jumper device having a configuration in which a jumper wire is suspended in an arc shape. There was a problem of being.
[0006]
For example, there is an unreinforced jumper device shown in FIG. This jumper device has a configuration in which a jumper wire is simply connected to a jumper socket of the retaining clamp 45 and suspended naturally, and the interval between the jumper wires is held by a spacer. When the jumper horn is mounted on the jumper device having such a configuration, as shown in FIG. 5, the center portion of the jumper wire droops greatly due to the weight of the jumper horn (for example, about 30 kg). As a result, the interval between the impulse horn and the jumper horn becomes too wide, and this interval cannot be maintained at a specified distance, and there is a possibility that the flashover cannot be performed between the two horns during a lightning strike. In addition, the distance between the jumper wire and the jumper wire of another phase becomes insufficient due to the drooping of the jumper wire, which may cause a short circuit between phases.
[0007]
Therefore, a main object of the present invention is to provide a jumper device that can suppress the drooping of the jumper line even if a jumper horn is provided on the jumper line side.
[0008]
[Means for Solving the Problems]
The present invention achieves the above object by devising a support structure of a jumper horn in a jumper device having a configuration in which jumper wires are suspended in a substantially arc shape.
[0009]
The jumper device according to the present invention includes a power transmission line connected to both sides from the arm tip of the tower via a tension insulator, a jumper line suspended by connecting the ends of the power transmission line, and a tower arm. It is a jumper device having an impulse horn fixed to the tip. And, one end is connected to the transmission line side end of each of the tension insulator devices, the other end is fixed to the other end side of each first suspension material, the first suspension material is connected in the middle of the jumper wire A jumper horn is provided, and the position of the other end of each first suspension member is a position between one end of each first suspension member and the impulse horn.
[0010]
According to this configuration, jumper horn can to be more supported by the first Tsuzai, the load of the jumper horn is prevented from being applied to the jumper wires, to avoid a significant sag jumper wire.
[0011]
By connecting the other end of the first hanger to the middle of the jumper wire, the swing of the other end of the first hanger can be suppressed and the jumper horn can be supported more stably.
[0012]
The jumper horn may be provided at any position on the other end side of the first suspension member. For example, providing at the edge part of the other end side of a 1st suspension material is mentioned. The direction of the jumper horn is preferably adjusted so as to oppose the impulse horn as much as possible.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
(Example 1)
FIG. 1 is a block diagram of a jumper device according to the present invention.
This jumper device includes a tension insulator 15 extending from both ends of a steel tower arm 10 to both sides, a transmission line 20 connected to an end of the insulator 15, and a jumper wire connecting the ends of both transmission lines 20. 25.
[0014]
A U-shaped impulse horn 30 fixed downward is attached to the tip of the arm 10 of the steel tower. Further, the tension insulators 15 are attached to both sides of the arm 10 at the middle. Arc horns 35 that protrude in opposite directions are attached to both ends of each tension insulator series 15. The transmission line 20 is connected to the end of the insulator series 15 opposite to the steel tower side via a yoke 40. The power transmission line 20 is connected to the yoke 40 by a retaining clamp 45. The retention clamp 45 includes a jumper socket that branches from the power transmission line 20, and the jumper line 25 is crimped to the socket.
[0015]
A plurality of jumper wires 25 are arranged in parallel, and each jumper wire 25 is kept spaced by a spacer 50. These jumper wires 25 are simply hung by connecting both ends to a jumper socket, and are in a state of hanging down in an arc shape.
[0016]
Here, a first suspension member 60 for supporting the jumper horn 55 is provided. The first suspension member 60 is a rod-shaped body having one end connected to each yoke 40 located between the insulator series 15 and the power transmission line 20 and the other end connected to the spacer. The connection structure of the first suspension member 60 and the yoke 40 is configured such that the first suspension member 60 is rotatable with respect to the yoke 40 at a predetermined angle. And the jumper horn 55 is provided in the lower end of this 1st suspension material 60, ie, the spacer 50 side.
[0017]
The jumper horn 55 is a bifurcated protrusion, and protrudes in a direction substantially perpendicular to the end of the first suspension member 60. That is, the impulse horn 30 and the two jumper horns 55 are arranged in a substantially triangular shape, and each horn is held toward the approximate center of the triangular shape.
[0018]
According to the jumper device having such a configuration, most of the load on the jumper horn 55 is held by the first suspension member 60. Moreover, since the 1st suspension material 60 rotates the jumper horn side edge part in the direction away from right and left of FIG. 1 centering on the connection location with the yoke 40, between the spacers 50 connected with the 1st suspension material 60. The jumper line 25 located at is pulled to the left and right. Therefore, a large sag is suppressed at the intermediate portion of the jumper wire 25.
[0019]
Further, by using the impulse horn 30 and the jumper horn 55, the arc horn 35 provided in the tension insulator series can be reduced in size.
[0020]
Some of the above-described retention clamps are clamped by wedges in addition to crimping. Further, the shape of the jumper horn is not limited to the bifurcated shape.
[0021]
( Reference example )
Next, a description will be given of a jumpers have device using a horn support in FIG. Figure 2 is a block diagram of jumpers have devices using horn support.
[0022]
In the reference example , the jumper horn 55 is not directly attached to the first suspension member as in the first embodiment, but the horn support member 70 is suspended and supported, and the jumper horn 55 is attached to the horn support member 70. . The configurations of the tension insulator series 15, the power transmission line 20, the impulse horn 30, and the jumper line 25 themselves are the same as those in the first embodiment.
[0023]
In this example, the horn support member 70 is supported by the second suspension member 65. The second suspension member 65 is a rod-shaped body having one end connected to each yoke 40 positioned between the insulator series 15 and the power transmission line 20 and the other end connected to the end of the horn support member 70.
[0024]
The horn support member 70 is a rod-like body arranged almost horizontally like a string with respect to the jumper wire 25 that hangs down in an arc shape. The end of the horn support member 70 is also connected to a spacer 50 that keeps the distance between the jumper wires 25. The jumper horn 55 protrudes upward and is fixed approximately at the center of the horn support member 70, and is disposed so as to face the impulse horn 30.
[0025]
According to this jumper device, since the load of the horn support member 70 and the jumper horn 55 is supported by the second suspension member, the load of the horn support member 70 and the jumper horn 55 is not applied to the jumper wire 25. It is possible to avoid sagging of the middle part. In particular, by connecting both ends of the horn support member 70 and the spacer 50, the arc shape of the jumper wire 25 can be easily maintained, and a reinforcing effect can be obtained.
[0026]
In this reference example , the horn support member 70 is supported by the second suspension member 65, but the second suspension member 65 may be eliminated and the horn support member 70 may be supported by the jumper wire 25. In this case, the jumper wire 25 is held in an arc shape and falls with a width corresponding to the length of the horn support member 70, and the jumper wire 25 becomes V-shaped and can be suppressed from drooping locally.
[0027]
【The invention's effect】
As described above, according to the jumper device of the present invention, the following effects can be obtained.
[0028]
By supporting the jumper horn using the first suspension member, it is not necessary to support the load of the jumper horn only at the central portion of the jumper wire, and the drooping of the central portion of the jumper wire can be avoided.
[0029]
By using the impulse horn and the jumper horn in combination, the size of the arc horn attached to the tension insulator can be reduced.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a jumper device according to the present invention.
Figure 2 is a block diagram of jumpers have devices using horn support.
FIG. 3 is a configuration diagram of a pipe-type jumper device.
FIG. 4 is a configuration diagram of an unreinforced jumper device.
FIG. 5 is a configuration diagram when a jumper horn is applied to an unreinforced jumper device.
[Explanation of symbols]
10 Arm 15 Tension insulator 20 Transmission line 25 Jumper line 30 Impulse horn 35 Arc horn 40 Yoke 45 Drain clamp 50 Spacer 55 Jumper horn 60 First suspension member 65 Second suspension member 70 Horn support member 80 Horizontal pipe member 85 Hanging Material

Claims (3)

A pair of left and right tension insulators extending from the arm tip of the steel tower to both sides ;
A transmission line connected via both tension insulators ;
A jumper wire suspended by connecting the ends of the transmission line,
An impulse horn fixed downward at the arm tip of the steel tower;
A pair of left and right first suspension members, one end of which is connected to the transmission line side end of each of the tension insulators and the other end is connected to the middle of the jumper wire;
A pair of left and right jumper horns that are fixed toward the impulse horn side at the other end of each first suspension member, and that generate a flashover between the impulse horn during a lightning strike,
Both jumper horns are disposed on opposite sides of the impulse horn in the horizontal direction .   The jumper device according to claim 1, wherein the impulse horn and the two jumper horns are arranged in a triangle, and each horn is held toward substantially the center of the triangle.   3. The jumper device according to claim 1, wherein the first suspension member is rotatably connected at a predetermined angle with respect to a transmission line side end portion of the tension insulator device.

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