JPH0917260A - Conductor tension resistant insulator device with arrester - Google Patents

Abstract

PURPOSE: To make the device compact and inexpensive in constitution, and facilitate mounting the device onto an existing steel tower by obliquely providing an arrester for a grounding side connection fitting, and letting its horn electrode be faced to a horn electrode provided for a conductor side connection fitting. CONSTITUTION: An arrester 15 is mounted to the lower half part 16 of a grounding side horn mounting fitting 10 of one conductor tension resistant insulator device 1. Namely, the upper end part of a bracket 17 is fixed to the part 16 of the fitting 10, and the arrester 15 is mounted obliquely downward to a flange 20 obliquely provided for the lower end of the bracket 17 with a bolt 21 and a nut 22 while being directed to the side of a suspended jumper wire. In addition, a horn electrode 28 which is faced to the horn electrode 25 of the arrester 15, is provided for the lower half part 27 of the conductor side horn mounting fitting 10 of the device 1. By this constitution, the device can easily mounted to an existing steel tower, concurrently, it will not be projected to the direction perpendicularly intersected with a line, and since no long rod support insulator for a jumper wire is required, the device 1 can thereby be made compact and inexpensive in constitution.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is equipped with a lightning arrester for quickly grounding an abnormally high voltage applied to a transmission line due to a lightning stroke and for suppressing a follow-up current generated thereafter to an extremely small value. The present invention relates to a conductor tension insulator device.

[0002]

2. Description of the Related Art As a conventional device of this type, for example, a lightning protection horn mounting bracket shown in FIG.
No.).

In this device, a support plate 53 protruding in the direction orthogonal to the track and a substrate 54 are mounted via the support plate 53 to a conductor tension insulator device mounting device 52 fixed to the tip of a support arm 51 of a steel tower. In the middle of the support plate 53, there is a long support insulator 5
5, a lightning protection horn 57 is hung vertically on the free end of the substrate 54, and an arc horn 58 is provided at the lower end of the lightning proof horn 57 and an arc horn is provided at the lower end of the long support insulator 55. The jumper wire 56 is attached to the jumper wire attachment portion 60 at the lower end of the trunk support insulator 55 with a pressing metal fitting 61 and bolts and nuts.

[0004]

However, in order to mount the long-section support insulator 55 and the lightning protection horn 57 on the tip of the support arm 51 of the existing steel tower, first, the tip of the support arm 51 and the conductor are attached. Since the support plate 53 and the like will be manufactured after investigating the shape, size, etc. of the tension insulator device mounting tool 52, it cannot be mounted quickly and easily. In addition, the long support insulator 55 and the lightning protection horn 57 are supported by the support arm.
Since it projects greatly from the tip of the mu 51 in the direction orthogonal to the track,
There is a problem that the conductor tension insulator device with lightning protection horn becomes large in size and the manufacturing cost rises. Support arm 51 for existing steel tower
In the case where a conductor having a horizontal angle is stretched via a conductor tension insulator device, the long trunk support insulator 55 causes the jumper wire 56 to move the jumper wire 56 as it is due to the displacement of the long trunk support insulator 55 and the jumper wire 56 in the line orthogonal direction. There is a case where the jumper wire 56 cannot be gripped, and in that case, a troublesome work is required to insert a secant line (joint line) having a required length into the jumper wire 56.

The present invention has been made in view of the above circumstances, has a compact and inexpensive structure in which the lightning arrester does not project in the direction orthogonal to the line and has no long support insulator, and can be easily attached to an existing steel tower. It is an object of the present invention to provide a conductor tension insulator device including the lightning arrester.

[0006]

SUMMARY OF THE INVENTION In a conductor tension insulator device provided with a lightning arrester according to the present invention, a conductor resistance is obtained by connecting one end to a tip end of a support arm 2 of a steel tower and arranging a conductor 6. In the insulator device 1, the lightning arrester 15 is obliquely installed at the lower part of the grounding side connecting metal fitting 10 toward the hanging side of the jumper wire, and is attached to the horn electrode 25 attached to the tip of the lightning arrester 15 and the conductor side connecting metal fitting 13. It is characterized in that it faces the horn electrode 28 with a predetermined air discharge gap. Therefore, the jumper wire 56 found in the conventional device is used.
It is not necessary to provide the long-supporting insulator 55 that supports the lightning protection horn 57 and the arc horn 58 of the lightning protection horn 57 and has a predetermined air discharge gap. Further, the lightning arrester 15 can be easily attached by using the grounding side connecting fitting 10 of the existing conductor tension insulator device 1.

Since the lightning arrester 15 is obliquely provided directly below the conductor tension insulator device 1, it is not bulky and can be made compact as compared with the conventional device in which the lightning arrester projects in the direction orthogonal to the line.

The lightning arrester 15 is a conductor tension insulator device 1
Conductor tension insulator device 1 fixed to the ground side connecting fitting 10
Since it swings integrally with the horn electrode 25 of the arrester 15,
The air discharge gap between the horn electrode 28 of the conductor-side coupling fitting 13 and the horn electrode 28 can be kept substantially constant.

Conductor-side insulator 13 of the conductor tension insulator device 1
Is a jumper wire 7 that hangs from the conductor tension clamp 5
By providing the jumper wire support rod 34 that supports the portion, it is possible to prevent the jumper wire 7 from abnormally approaching the horn electrode 25 of the lightning arrester 15.

In the conductor tension insulator device 1 in which the upper phase conductor is laid, there is no conductor tension insulator device above this, so the problem of clearance with the upper side is eliminated. In such a case, the lightning arrester 15 is obliquely provided on the ground-side connecting fitting 38 toward the conductor side, and the horn electrode 45 is provided on the conductor-side connecting fitting 44 so as to project upward. This horn electrode 45
A predetermined air discharge gap may be ensured between the horn electrode 43 attached to the tip of the arrester 15.

The horn electrodes 25, 43 attached to the tip of the lightning arrester 15 are slidably attached to the lightning arrester 15 or pivotably attached to the conductor-side connecting fittings 13, 13 of the conductor tension insulator device 1. It becomes easy to adjust the air discharge gap with the horn electrodes 28 and 45 attached to the unit 44.

[0012]

[Embodiment] An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, the conductor tension insulator device 1, 1'is connected by U clevis 4, 4 on both sides of a mounting bracket 3 fixed to the lower surface of the tip of a support arm 2 of a steel tower, and a conductor 6, 6 is pulled. ′
Clamp with the conductor tension clamps 5 and 5 '. A jumper wire 7 is arranged between the conductor tension clamps 5 and 5 '.

The conductor tension insulator devices 1 and 1'are all U-shaped.
Clevis 4, 9, ground-side horn mounting bracket 10, insulator 1
1, a parallel socket clevis 12, a conductor side horn mounting bracket 13, and a tension clamp 5.

The lightning arrester 15 is a conductor tension insulator device 1 on one side.
It is attached to the lower half 16 of the ground side horn mounting bracket 10.
That is, the upper end of the bracket 17 is fixed to the lower half portion 16 of the ground-side horn mounting bracket 10 with bolts 18 and nuts 19,
A lightning arrester 15 is obliquely provided obliquely downward toward the hanging side of the jumper wire by a bolt 21 and a nut 22 on a flange 20 obliquely provided at the lower end of the bracket 17. Therefore, the arrester 15 can be quickly and easily attached to the conductor tension insulator device of the existing steel tower by using the support arm 2 as a scaffold without investigating the shape and size of the tip of the support arm 2. You can Lightning arrester 15 fixed to the ground side horn mounting bracket 10
Is obliquely installed on the vertical plane including the axis 24 of the conductor tension insulator device 1, so that the lightning arrester 15 does not project in the line orthogonal direction. The horn electrode 25 attached to the tip of the lightning arrester 15 is attached to the lightning arrester slidably or rotatably.

In the lower half 27 of the conductor-side horn mounting bracket 13 of the conductor tension insulator device 1, the horn electrode 25 of the lightning arrester 15 is provided.
The horn electrode 28 facing the horn electrode 2 is provided.
The predetermined air discharge gaps between 5 and 28 are attached to the upper half portions 29 and 30 of the horn mounting brackets 10 and 13, respectively.
It is shorter than the air discharge gaps of the arc horns 31 and 32 that face each other with 1 in between. In addition to the horn electrode 28, a jumper wire support rod 34 is provided on the lower half portion 27 of the conductor-side horn mounting bracket 13. The jumper wire supporting rod 34 holds the jumper wire 7 portion which hangs down from the conductor tension clamp 5 by a spacer 33 which abuts on the projection 35 at the tip of the jumper wire supporting rod 34, so that the jumper wire 7 is held by the lightning arrester 15. Electrode 2
I try not to approach 5.

In the conductor tension insulator device 1 in which the upper phase conductor is stretched, as shown in FIG. 6, the ground side connecting metal fitting, in this embodiment, the ground side yaw connecting one end of the two insulator contacts 37. The bracket 39 is erected on the upper surface of the bracket 38, and the bolt 4 is attached to the flange 40 obliquely provided on the upper end of the bracket 39.
1. With the nut 42, the lightning arrester 15 is installed obliquely upward toward the conductor side. Then, the horn electrode 43 provided at the tip of the lightning arrester 15 and the conductor-side connecting metal fitting, in this embodiment, the conductor-side yoke 44 for connecting the other end of the two-insulator unit 37, are attached and protruded upward. A predetermined air discharge gap is secured with the horn electrode 45. Incidentally, a pair of arc horns which should be arranged on both sides of the insulator reinforcement 37 of the conductor tension insulator device 1 have a pair of arc horns opposed to the conductor tension insulator device 1 via the support arm 2. The conductor tension insulator device (not shown) is omitted because it is shared by a pair of arc horns arranged on both sides of the insulator string.

[0017]

As described above, according to the present invention, the lightning arrester is obliquely installed on the ground side connecting metal fitting of the conductor tension insulator device, and its horn electrode is provided as the horn electrode provided on the conductor side connecting metal fitting. Since they are facing each other, they can be easily installed on the existing steel tower, and the lightning arrester does not project in the direction orthogonal to the line, and since the long trunk support insulator for the jumper wire is not necessary, it has a compact and inexpensive lightning arrestor. A conductor tension insulator device can be provided. Further, since the arrester is fixed to the ground side connecting metal fitting of the conductor tension insulator device, even if the conductor tension insulator device swings largely, the horn electrode of the lightning arrester and the horn electrode of the conductor side connecting metal fitting are connected. The gap between and does not change much.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is a partially cutaway enlarged side view of the embodiment of FIG.

FIG. 3 is a view taken along line AA in FIG. 1;

FIG. 4 is a view taken along the line BB in FIG.

5 is a sectional view taken along line CC in FIG.

FIG. 6 is a partially cutaway side view of another embodiment of the present invention.

FIG. 7 is a front view of a conventional product.

[Explanation of symbols]

 1 conductor tension insulator device 2 support arm 6 conductor 7 jumper wire 10 ground side horn mounting bracket 13 conductor side horn mounting bracket 15 lightning arrester 25 horn electrode 28 horn electrode 34 jumper wire supporting rod 38 Grounding side yoke 43 Horn electrode 44 Conductor side yoke 45 Horn electrode

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Houka Nomura 13-1 Isojima Minamimachi, Hirakata City, Osaka Prefecture

Claims (5)

[Claims] 1. A conductor tension insulator device (1) in which a conductor (6) is erected by connecting one end to a tip portion of a support arm (2),
A lightning arrester (15) is installed at the bottom of the grounding side connecting metal fitting (10) obliquely toward the hanging side of the jumper wire, and the horn electrode (25) attached to the tip of the lightning arrester 15 and the conductor side connecting metal fitting (13). A conductor tension insulator device comprising a lightning arrester, characterized in that the mounted horn electrode (28) opposes with a predetermined air discharge gap. 2. The conductor tension insulator device according to claim 1, wherein the conductor-side coupling fitting (13) is provided with a jumper wire support rod (34) for supporting the hanging portion of the jumper wire (7). 3. A conductor tension insulator device (1) in which a conductor (6) is erected by connecting one end to a tip portion of a support arm (2),
The lightning arrester (15) is installed diagonally upward toward the conductor side on the grounding side connecting metal fitting (38), and the horn electrode (43) attached to the tip of the lightning arrester (15) and the conductor side connecting metal fitting (44). Horn electrodes mounted on (45)
A conductor tension insulator device having a lightning arrester, characterized in that they are opposed to each other with a predetermined air discharge gap. 4. A horn electrode (28) at the tip of the arrester (15),
A conductor tension insulator device provided with a lightning arrester according to claim 1 or 3, wherein (45) is slidably mounted. 5. The horn electrode (28) at the tip of the arrester (15),
A conductor tension insulator device comprising a lightning arrester according to claim 1 or 3, wherein (45) is rotatably attached.