JPH0640452B2 - Large bundle diameter multi-conductor transmission line tension insulator device - Google Patents

Description

The present invention relates to a tension insulator device for a large bundle diameter multiconductor power transmission line used in a multiconductor AC power transmission line.

[Conventional technology]

To increase the transmission capacity of the transmission line, increase the transmission voltage,
Although it is customary to increase the current capacity of the transmission line,
Recently, a multiconductor AC power transmission line has been proposed in which the power transmission capacity is increased by expanding the distance D between the conductors 81 to reduce the inductance of the line as shown in FIGS. 7 and 8. Large bundle diameter multi-conductor transmission line tension insulator devices 82, 82 used in this multi-conductor AC transmission line
Is a right-angled clevis 84, 84 to the left and right ends of the horizontal yoke portion 83 and the horizontal yoke portion 83, which are connected to the tower through the parallel links 7, 7, and the triple insulator linkage mechanism 5 as shown in FIGS. Vertical yoke part 8 connected via
The conductor 81 is fastened to the upper and lower ends of 5, 85 through the connecting metal fittings 86 and the tension clamps 87, respectively, and the bundle diameter φ of the multiconductor is obtained.
A large bundle diameter 6-conductor transmission line with a large (diameter of a circle passing through the center of multiple conductors) was stretched. Reference numeral 88 shown in FIG. 7 is a spacer for keeping the conductor interval.

[Problems to be Solved by the Invention]

The horizontal yoke portion 83 and the pair of vertical yoke portions 85, 85
The electric wire side detention yoke 8 provided with must be large in size in order to hold large bundle diameter multiconductors with expanded conductor intervals, and accordingly, the shield device for spinning corona discharge must also be large in size. The retracting yoke and the shield device are large and bulky. For this reason, there is a disadvantage in that it is extremely difficult to carry into a steel tower in a mountainous area, attach it to a steel tower, perform a tension line work, and work at a high place.

The present invention has been made in view of the above points, and provides a compact wire-stretching insulator and shield device for a large-bundle multiconductor power transmission line, and further, the wire-side stranding yoke thereof. The purpose is to make the structure strong against the twisting force.

[Means for Solving the Problems]

In order to achieve this object, in the large-strand-diameter multiconductor transmission line tension insulator device of the present invention, the electric wire side pulling yoke connected to the steel tower via the plurality of insulator connecting mechanisms, the connecting metal string, and the tension clamp. In a large-strand-diameter multiconductor transmission wire tension insulator device in which a large-bundle-diameter multiconductor is attached, the wire-side detention yoke is composed of a horizontal yoke part and a pair of vertical yoke parts fixed in a c-shape to the horizontal yoke part. The distance between the left and right connecting points of the vertical coke portion, the distance between the upper and lower connecting points of each vertical yoke portion, and the distance between the left and right connecting points of the horizontal yoke portion are each narrower than the corresponding conductor spacing of the large bundle diameter multi-conductor, and further, Distance between the left and right tension clamps connected to the pair of vertical yokes via connecting metal fittings, distance between the upper and lower both clamps connected to each vertical yoke via connecting metal fittings, and connecting metal fittings to the horizontal yoke portion. Connected via The left and right tension clamps are connected to the pair of vertical yokes so that the intervals between the left and right tension clamps are equal to the corresponding conductor intervals of the large bundle diameter multi-conductor. It is characterized in that the connecting metal fittings and the left and right connecting metal fittings connected to the horizontal yoke portion are respectively connected by expansion fittings.

Also, in a large-insulator multi-conductor transmission line tension insulator device in which a large-bundle diameter multi-conductor is attached to a wire-side detention yoke connected to a steel tower via a multiple-insulator connecting mechanism via a connecting metal fittings and a tension clamp, The wire-side detention yoke is composed of a horizontal yoke portion and a pair of vertical yoke portions fixed to the horizontal yoke portion.The distance between the left and right connecting points of the pair of vertical yoke portions, the distance between the upper and lower connecting points of each vertical yoke, and A frame in which the distance between the left and right connecting points of the horizontal yoke is narrower than the corresponding conductor spacing of the large bundle diameter multiconductor, and the required number of tension clamps for mounting the large bundle diameter multiconductor are arranged at the conductor spacing of the large bundle diameter multiconductor. It may be characterized in that the connection point of the wire-side detention yoke corresponding to the tension-resistant clamp mounting portion of the body is detachably connected by a connecting material.

The wire-side retention yoke can be composed of a horizontal yoke portion and a pair of vertical yoke portions that are connected to the horizontal yoke portion via connecting metal fittings. The connection point of the wire-side detention yoke as described above is positioned substantially on the circumference of equal diameter centered on the center line of the multiple insulator linkage mechanism. The wire side retention yoke for even conductors having eight or more conductors can be composed of a plurality of horizontal yoke portions and a pair of vertical yoke portions.

[Action]

The distance between the left and right connecting points 13, 13 of the pair of vertical yoke portions 11, 11 of the wire-side detention yoke 8, the distance between the upper and lower connecting points 13, 13 of each vertical yoke portion 11, and the left and right connecting points of the horizontal yoke portion 9. The intervals of 12, 12 are narrower than the corresponding conductor intervals of the large bundle diameter multi-conductor, and the vertical and horizontal directions of the four tension clamps 54 that are connected to the pair of vertical yoke parts 11, 11 via connecting metal fittings. And the left and right tension clamps 54, which are connected to the horizontal yoke portion 9 via the connecting metal fittings, are connected by the expansion metal fittings 34, 35, and 23 so as to be the corresponding conductor distances of the large bundle diameter multiconductor. Since the metal fittings are connected, a large bundle diameter multiconductor can be retained by the small-sized wire-side retention yoke 8.

Also, the left and right connecting point intervals 13, 13 of the pair of vertical yoke parts 11, 11 and the left and right connecting point intervals 12, 12 of the horizontal yoke part 9 are made narrower than the corresponding conductor intervals of the large bundle diameter multi-conductor. The required number of tension clamps 54 for mounting the large bundle diameter multiconductor are arranged on the tension clamp mounting portions 39, 41 of the frame body 69 in which the large bundle diameter multiconductors are arranged at conductor intervals of the large bundle diameter multiconductor. Since the connecting points 13 and 12 are detachably connected by the connecting members 38 and 40, the large bundle diameter multiconductor can be retained by the small-sized wire-side retention yoke 8.

However, since the connection points 12 and 13 of the wire-side detention yoke 8 are located substantially on the circumference of the same diameter around the multiple insulator linkage mechanism center line 70, the connection points of the wire-side detention yoke 8 are set. The wires 12 and 13 can substantially share the twisting force acting on the wire-side retention yoke 8 due to the insulator snowfall, the twisting moment of the bundle conductor during gear roping, and the like.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. 1 to 3 show a horizontal yoke 1 attached to a steel tower arm (not shown) via a connecting fitting (not shown) so as to be vertically and horizontally turnable, and both ends thereof and a middle point of both ends thereof. Of the pair of yokes 3, 3 whose one end is connected by a common pin 2 and three pairs of horizontal insulators 4 which are connected to the pin 2 and a pair of yokes 3, 3 constitute an insulator connection mechanism 5. The wire-side detention yoke 8 is connected to the pair of yokes 3 and 3 through the parallel links 7 and 7 at positions where the insulator connection points 6 and 6 are divided into a ratio of 1: 2. The wire-side detention yoke 8 includes parallel links 7 and 7.
The vertical yoke portions 11, 11 are connected to the horizontal yoke portion 9 to be mounted via the right-angled clevis 10, 10. Therefore, if necessary, the horizontal yoke portion 9 and the vertical yoke portions 11, 1
1 can be separated. The horizontal yoke portion 9 has a distance d ₁ between the connection points 12 and 12 provided at both ends thereof narrower than the corresponding conductor distance D ₁ of the large bundle diameter 6 conductors, and the pair of vertical yoke portions 11 and 11 has left and right sides thereof. Both connection points 13, 13
The wire-side detention yoke 8 is miniaturized by making the distance d ₂ between the _two and the distance d ₃ between the upper and lower connecting points 13 and 13 smaller than the corresponding conductor distances D ₂ and D ₃ of the large bundle diameter 6 conductor. . Connection points 12, 12, 13, 1 of the wire-side detention yoke 8
3, 13 and 13 are substantially positioned on a circle of equal diameter centered on the center line 70 of the multiple insulator linkage mechanism.

The connecting points 12 and 12 of the horizontal yoke portion 9 are connected to connecting metal fittings, respectively, in this embodiment, a right-angled clevis 15 and a single link 1.
6, parallel clevis 17, 1 piece ink 18, right angle clevis 19, bracket 20, right angle clevis 21, 1 piece link 2
A tension clamp (not shown) is connected via 2 or the like, and a pair of opposing wedges are arranged such that the conductors attached by both tension clamps have a conductor spacing D ₁ corresponding to the large bundle diameter 6 conductors. The metal fittings 20, 20 are connected by an expansion metal fitting 23 having a predetermined length. Also, the upper and lower connecting points 13 of each vertical yoke portion 11,
13 are connecting metal fittings, in this embodiment, right-angle clevis 24, right-angle clevis link 25, single-piece link 26, right-angle clevis link 27, right-angle clevis 28, 4-way metal fitting 2
9, a right-angle clevis 30, a right-angle clevis link 31, a single-piece link 32, and the like are used to connect tension-resistant clamps (not shown), and the conductors attached to the upper and lower tension-resistant clamps have a predetermined conductor spacing D _3. Upper and lower four-way metal fittings 29, 2
9 are connected by expansion metal fittings 34 of a predetermined length, and the distance between the conductors attached by the left and right tension clamps is a predetermined conductor distance D ₂
2 upper and 2 lower left and right four-way metal fittings 29,
29 are connected by expansion metal fittings 35, 35 each having a predetermined length. By doing so, the large bundle diameter 6 conductor can be retained in the miniaturized electric wire side retention yoke 8.

A shield device (not shown) is attached to the horizontal yoke portion 9 in order to prevent corona discharge of the wire-side pulling yoke 8 and connecting fittings in front of and behind it. Although the wire-side pulling yoke 8 is of a movable type, it is of course possible to use a fixed type in which a pair of vertical yoke portions 11, 11 are orthogonal to the horizontal yoke portion 9 and are integrally connected in a C-shape.

What is shown in FIGS. 4 to 6 is a three-insulator connecting mechanism 5 (first
(The same structure as the three-insulator connecting mechanism 5 shown in the figure) is connected to the parallel link 7 by a wire-side detention yoke 8 which is a parallel link 7,
A pair of vertical yoke parts 1 is attached to a horizontal yoke part 9 for mounting 7.
It is a fixed yoke in which 1 and 11 are made orthogonal to each other and are fixed in a C-shape.

A pair of angles 38, 38, which are connecting members, are attached to the upper and lower sides of the vertical yoke portions 11, 11 by bolts 67 and nuts 68, and are radially protruded. 39 to bolt 67, nut 68
At the both ends of the horizontal yoke portion 9, one end of a pair of angles 38, 38, which are connecting members, is attached by bolts 6 respectively.
7 and nuts 68 are attached to radially project the eye plate 41, which is a tension clamp attachment portion, with bolts 67 and nuts 68. Then, the four claw-shaped metal fittings 39 are connected to the adjacent claw-shaped metal fittings 39 and the eye plate 41, respectively, and connecting plates 42,
43 to form a frame 69 as a whole, and the distance between the connecting points 44, 44 of the left and right claw-shaped metal fittings 39, 39 is set to the conductor spacing D ₂ of the large bundle diameter 6 conductors, and the upper and lower claw-shaped metal fittings 39, 39 are separated. The distance between the connecting points 44, 44 is the conductor distance D _{3 for the} large bundle diameter 6 conductors.
In particular, the distance between the connecting points 46, 46 of the left and right eye plates 41, 41 is equal to the conductor distance D ₁ of the large bundle diameter 6 conductors. Frame 6
9 and the wire-side detention yoke 8 can be separated by removing the angles 38 and 40. The center of the frame body 69 and the center of the wire-side anchoring yoke 8 are both located on the center line 70 of the multiple insulator connecting mechanism 5, and the angle connecting points 12, 12, 13, 13, 13, 13, 13 of the wire-side anchoring yoke 8 are the plurality of insulators. They are located almost on the same circumference centered on the link mechanism centerline 70.

The frame 69 is a connecting point 44, 4 of the upper brackets 39, 39.
4 right angle clevis 48, right angle clevis link 4 respectively
9, 1-piece link 50, parallel clevis 51, length adjustment fitting 52, right-angled clevis link 53 through tension clamp 5
4 are connected, and the connecting points 46 of the eye plates 41, 41 in the middle are
46 to the right angle clevis 57, 1 link 58, parallel clevis 59, 1 link 60, parallel clevis 61,
Length adjustment metal fittings 62, 1 piece link 63, parallel clevis 64
The tension clamp 54 is connected via. Right-angled clevis 48, right-angled clevis link 49, 1-piece link 50, parallel clevis 51, 1-piece link 65, parallel clevis 66, at the connection points 44, 44 of the lower brackets 39, 39, respectively.
Length adjustment metal fittings 62, 1 piece link 63, parallel clevis 64
The tension clamp 54 is connected via.

The wire-side detention yoke 8 of this embodiment is for a large bundle diameter of 6 conductors, but for even conductors of 8 conductors or more, a combination of a plurality of horizontal yoke portions 9 and a pair of vertical yoke portions 11 and 11 is used. can do.

〔The invention's effect〕

Since the present invention is configured as described above, it has the following effects.

The distance between the connecting points of the wire-side detention yokes is narrower than the corresponding conductor intervals of the large bundle diameter multiconductor, and the distance between the tension clamps that are connected to the wire-side detention yoke through the connecting metal fittings is the large bundle diameter multiconductor conductor. By connecting the connecting metal fittings with the expansion fitting so as to be equal to the distance, or, the connecting point of the conducting wire side detention yoke, where each connecting point interval is narrower than the corresponding conductor interval of the large bundle diameter multiconductor, The required number of tension clamps for mounting large bundle diameter multi-conductors are detachably connected to the tension clamp mounting portion of the frame, which is arranged at conductor intervals of the large bundle diameter multi-conductors, by using a connecting material so that the large bundle diameter multi-conductors can be detached. Since we are trying to reduce the size and weight of the wire-side detention yoke and shield device of the transmission line tensile insulator device, we will carry the large bundle diameter multiconductor transmission insulator device to the mountain range steel tower and to the steel tower. Installation, tension work and other work in high places It has the advantage of easy.

Since each connection point of the wire-side detention yoke shares the twisting force acting on the wire-side detention yoke in approximately equal parts, it is possible to rationally design the connection point location that becomes a neck in terms of strength, reduce the weight of the device, and cost. Can be reduced.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view of an embodiment of the present invention, FIG. 2 is a cutaway side view of the same portion, FIG. 3 is a schematic front view thereof, and FIG. 4 is another embodiment of the present invention. Partial cutaway plan view, FIG. 5 is the same part notched side view, FIG. 6 is the same front view, FIG. 7 is a partial cutaway plan view of a conventional multi-conductor AC transmission line, and FIG. 8 is the same. FIG. 9 is a partially cutaway plan view of a conventional large-strand-diameter multiconductor power transmission insulator device, and FIG. 10 is a cutaway side view of the same portion. 5 ... Plural insulator linkage mechanism, 8 ... Wire side retention yoke, 9 ...
... horizontal yoke part, 11 ... vertical yoke part, 12,13 ...
... Connecting points, 23,34,35 ... Expansion metal fittings, 38,4
0 …… Connecting material, 39,41 …… Tension-resistant clamp mounting part, 5
4 ... tension clamp, 69 ... frame, 70 ... multiple insulator link center line, 81 ... conductor.

Front page continued (72) Inventor Akihiro Yukino 3-11-20 Wakaoji, Amagasaki City, Hyogo Prefecture Kansai Electric Power Co., Inc. Research Institute (72) Inventor Yoshihisa Maeda 13-1 Isoshimaminami-cho, Hirakata-shi, Osaka Japan Inside the forged iron plant (72) Ikuro Hayase Inventor, 13-1 Isoshima-Minami-cho, Hirakata-shi, Osaka Inside the Forged Iron Company (72) Inventor Akihiro Katayama 13-1, Iso-jima-Minami-cho, Hirakata-shi, Osaka Japan In-house (56) References Actually open Sho 51-48700 (JP, U) Actually open 50-147198 (JP, U)

Claims (5)

[Claims] 1. A large bundle diameter multiconductor in which a large bundle diameter multiconductor is attached to an electric wire side detention yoke (8) connected to a steel tower via a plurality of insulator connection mechanisms (5) via a connecting metal fitting and a tension clamp. In the tension insulator device for power lines, the wire side retention yoke (8)
Is composed of a horizontal yoke portion (9) and a pair of vertical yoke portions (11) and (11) fixed to the horizontal yoke portion (9).
The distance between the left and right connecting points (13) and (13) of 1) and (11), the distance between the upper and lower connecting points (13) and (13) of each vertical yoke section (11), and the horizontal yoke section (9). The distance between the left and right connecting points (12), (12) is made narrower than the corresponding conductor distances (D ₂ ), (D ₃ ), (D ₁ ) of the large bundle diameter multiconductor, and a pair of vertical yoke parts Distance between both left and right tension clamps (54), (54) connected to (11), (11) via connecting metal fittings, upper and lower resistance for connecting to each vertical yoke (11) via connecting metal fittings. Distance between tension clamps (54), (54) and horizontal yoke
Both left and right tension clamps that connect to (9) via connecting metal fittings
Set the pair of vertical yokes (11), () so that the intervals of (54), (54) are equal to the corresponding conductor intervals (D ₂ ), (D ₃ ), (D ₁ ) of the large bundle diameter multiconductor. 2 left and right connecting metal fittings connected to 11), 2 upper and lower connecting metal fittings connecting to each vertical yoke (11) and 2 left and right connecting metal fittings connecting to the horizontal yoke (9) A tension insulator device for a large bundle diameter multi-conductor power transmission line, characterized by being connected by metal fittings (35), (34), (23). 2. A large bundle diameter multiconductor in which a large bundle diameter multiconductor is attached to an electric wire side detention yoke (8) connected to a steel tower through a plurality of insulator connection mechanisms (5) via a connecting metal fitting and a tension clamp. In the tension insulator device for power lines, the wire side retention yoke (8)
Is composed of a horizontal yoke portion (9) and a pair of vertical yoke portions (11) and (11) fixed to the horizontal yoke portion (9).
Distance between left and right connecting points (13) and (13) of 1) and (11), each vertical yoke
Space between the upper and lower connecting points (13) and (13) of (11) and the horizontal yoke
The distance between the left and right connecting points (12) and (12) in (9) is made narrower than the corresponding conductor intervals (D ₂ ), (D ₃ ), and (D ₁ ) of the large bundle diameter multiconductor, and the large bundle diameter is large. A corresponding number of tension clamps (54) for mounting conductors are arranged on the tension clamp attachment parts (39), (41) of the frame body (69) in which the conductors of a large bundle diameter multiconductor are arranged at the conductor spacing. A tensile insulator device for a large bundle diameter multi-conductor transmission line, characterized in that the connecting points (13) and (12) of (8) are detachably connected by connecting members (38) and (40). 3. A wire-side detention yoke (8) comprising a horizontal yoke portion (9) and a pair of vertical yoke portions (11), (11) connected to the horizontal yoke portion (9) through a connecting metal fitting (10). 1. A tensile insulator device for a large bundle diameter multi-conductor transmission line according to 1. 4. A vertical yoke having a pair of wire-side detention yokes (8).
The tension insulator device for a large bundle diameter multi-conductor transmission line according to claim 1 or 2, comprising (11), (11) and a plurality of horizontal yoke portions (9). 5. The electric wire side detention yoke (8) is arranged so that the connecting points (12) and (13) are positioned substantially on a circle of equal diameter centered on the centerline (70) of the multiple insulator linkage mechanism. Item 1. A tensile insulator device for a large bundle diameter multiconductor power transmission line according to item 1, 2, 3 or 4.