JPH01291620A - Pipe jamper device - Google Patents

Abstract

PURPOSE:To prevent breakdown of a pipe jamper device due to falling down of accumulated snow by shifting the joints of a plurality of pipe conductors in longitudinal direction then coupling the plurality of pipe conductors through spacers at the opposite sides of the joints of respective pipe conductors and coupling the spacers at the opposite sides of the joints through reinforcing rods. CONSTITUTION:Two pipe conductors 11A, 11B are arranged in parallel and integrated through connecting boards 18 at the opposite ends. Joint sections 19A, 19B employing bolts and nuts are provided in the way of the pipe conductors 11A, 11B so that long pipe conductors 11A, 11B can be splitted at these joints. The joint sections 19A, 19B are shifted in the longitudinal direction of the pipe conductor so that the two pipe conductors 11A, 11B are gripped by spacers 20A, 21A at the opposite ends of the joint section 19A, and these spacers 20A, 21A are coupled through a reinforcing rod 22A. Similar structure is also employed at the opposite ends of the joint section 19B.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a pipe jumper device for an overhead power transmission line.

(Prior art) A pipe jumper device is used to electrically connect power lines on both sides held at the tips of tension insulators in a tension tower section of an overhead power transmission line, and connects both ends of a rigid pipe conductor. It has a structure in which jumper wires made of flexible conductors are connected to. Both ends of the pipe conductor are supported by hanging fittings to keep it horizontal, and the end of the jumper wire is connected to the power transmission line via a tie clamp.

Recently, as power transmission capacity has increased, pipe jumpers 2 have also become larger, and pipe conductors are also required to have larger diameters and longer lengths. However, as pipe conductors have to be manufactured and transported to larger diameters and longer lengths, there are manufacturing and transportation constraints. In addition to making it possible to assemble it into a pipe conductor, consideration has been given to using a plurality of such pipe conductors (usually two) and arranging them in parallel.

〔assignment〕

However, as mentioned above, for pipe conductors that have a joint in the middle, the strength of the joint is weaker than other parts, so if, for example, snow caps on the tower arm fall on the pipe conductor all at once, the joint of the pipe conductor will There is a risk of damage.

(Means for Solving the Problems and Their Effects) The present invention has been made to solve the above-mentioned i!!! problem, and has a structure in which a plurality of pipe conductors having a connection part in the middle are arranged in parallel, In a pipe jumper device in which a jumper wire made of a flexible conductor is connected to both ends of the jumper wire,
The positions of the connection parts of the plurality of pipe conductors are shifted in the longitudinal direction, and the plurality of pipe conductors are connected with spacers on both sides of the connection part of each pipe conductor, and the spacers on both sides of the connection part are connected with reinforcing rods. It is characterized by the fact that

With this configuration, the joints of pipe conductors are reinforced by other pipe conductors and reinforcing rods, so
It becomes possible to protect the connection portion from impact loads and the like.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

Figures 1 to 3 show an embodiment of the present invention.
Reference numerals 11A-11B are aluminum alloy pipe conductors, 12 are jumper wires (stranded wire conductors) connected to both ends thereof via connection sockets 13, and 14 are pipe conductors 11A and 11B.
Hanging metal fittings to horizontally support JIB, 15 is power transmission line, 16
17 is a steel tower arm.

The two pipe conductors 11A and IIB are arranged in parallel and are integrated by connecting plates 18 at both ends.

Moreover, the two pipe conductors 11A and IIB each have connecting portions 19A and 19B in the middle. Connection part 19A・1
Reference numeral 9B denotes a connection portion to be tightened with a bolt and a nut, which is provided so that the long pipe conductors 11A to 11B can be divided and transported at this portion. The connecting portions 19A and 19B are provided with their positions shifted in the longitudinal direction of the pipe conductor, and on both sides of one connecting portion 19A, the two pipe conductors 11A and IIB are connected to the spacer 20.
A and 21A, and these spacers 20
A and 21A are connected by a reinforcing rod 22A. Also, on both sides of the other connection part 19B, two pipe conductors 11
A and IIB are held by spacers 20B and 21B,
These spacers 20B and 21B are connected by a reinforcing rod 22B.

Each spacer has the same structure, one of which is shown in Figure 2. In other words, the pipe conductor 11A is clamped by two clamp pieces 23.
・It has a structure in which IIB and reinforcing rod 22A are sandwiched and tightened with bolts and bolts 24.

With this configuration, one connecting portion 19A is connected to the other connecting portion 19 by the assembly of the spacers 2OA and 21A, the other pipe conductor 11B, and the reinforcing rod 22A.
B is the spacer 20B/21B and one pipe conductor 1
1A and reinforcing rods 22B, each is reinforced, so even if snow caps on the tower arm 17 fall and directly hit the pipe conductors 11A-11B, the connection portions 19A-19B will be protected. The impact load is significantly reduced, and the connecting portions 19A-19B can be reliably protected.

Although each of the above embodiments shows a case in which there are two pipe conductors, the present invention can be similarly applied to a pipe jumper device having three or more pipe conductors.

〔Effect of the invention〕

Since the pipe jumper device according to the present invention is configured as described above, the connection portion of each pipe conductor is reinforced by the assembly of the spacer on both sides, the other pipe conductor, and the reinforcing rod. , it is possible to reliably protect the joints of pipe conductors from impact loads caused by falling snow caps, etc. Therefore, the reliability of a large pipe jumper device having pipe conductor connections can be greatly improved.

[Brief explanation of the drawing]

Figure 1 is a plan view showing the main parts of a pipe jumper device according to an embodiment of the present invention, Figure 2 is a sectional view taken along line ■-■ in Figure 1, and Figure 3 is a front view of the same device. . 11A/11B: Pipe conductor, 12: Jumper wire, 19
A/19B: Connection part, 2OA/21A/20B/21B
= Spacer, 22A/22B: Reinforcement rod.

Claims (1)

[Claims] 1. In a pipe jumper device in which a plurality of pipe conductors having a connection part in the middle are arranged in parallel and jumper wires made of flexible conductors are connected to both ends of the pipe conductors, the positions of the connection parts of the plurality of pipe conductors are longitudinally arranged. A pipe jumper device characterized in that a plurality of pipe conductors are connected by spacers on both sides of a connecting portion of each pipe conductor, and the spacers on both sides of the connecting portion are connected with a reinforcing rod.