JP2002051442A - Pipe-type jumpering apparatus for aerial power transmission line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily add a weight at a low cost, when adding the weight to prevent horizontal deflection to a jumper pipe of a pipe-type jumpering apparatus. SOLUTION: A flat-plate type weight 11 is provided, using a spacer 12, in such a manner that it does not project from the upper and lower surfaces of a jumper pipe 7, between the right and left jumper pipes 7, which are disposed in parallel in the horizontal condition of the pipe-type jumpering apparatus. The flat-plate type weight 11 can be disposed easily, and weight can also be added easily at a low cost. The weight to be added can be easily adjusted, by adjusting the number of sheets to be laminated of the flat-plate type weight 11. Since the flat-plate type weight 11 does not project from the upper and lower surfaces of the jumper pipe 7, the corona characteristic is not deteriorated, and moreover increase in wind pressure load for the cross wind will not increase either.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe type jumper device for an overhead transmission line, and more particularly, to adding a weight (weight) to a jumper pipe portion for suppressing a lateral swing of the jumper device due to wind. It has features.

[0002]

2. Description of the Related Art In an overhead power transmission line, as a jumper device for electrically connecting main lines of transmission lines on both sides of a tower fixed to a tension tower, a jumper pipe made of an aluminum pipe or the like is provided below a tower arm in a substantially horizontal state. 2. Description of the Related Art Pipe-type jumper devices are widely used in which both ends of a jumper pipe are connected to main lines of transmission lines on both sides of a tower by jumper stranded wires. In this type of pipe jumper device,
As one of the means for suppressing the lateral swing of the jumper device due to the wind, it is considered to add a weight (weight) to the jumper pipe portion. As the weight adding means in that case, a method of increasing the thickness of the jumper pipe itself, inserting a steel rod or the like into the jumper pipe, or the like can be considered.

[0003]

According to the above-mentioned method of increasing the wall thickness of the pipe, since the jumper pipe is usually manufactured by extrusion using a mold, the metal pipe corresponding to the pipe thickness corresponding to the required weight addition is usually used. It is necessary to make a new type, it is not easy to deal with, and the cost increases.
Further, it is extremely difficult to set an arbitrary weight (weight). In the above method of inserting a steel rod into a pipe, it is necessary to fix the steel rod by welding or the like so that the steel rod does not move, but the welding operation is complicated and the manufacturing cost is increased. Is difficult.

[0004] The present invention has been made in view of the above points,
It is an object of the present invention to provide a pipe-type jumper device for overhead transmission lines that can easily add weights at a low cost, can easily set an arbitrary weight, and is easy to maintain. .

[0005]

The pipe jumper device for an overhead transmission line according to the present invention, which solves the above-mentioned problems, comprises two right and left plate-shaped weights arranged in parallel with each other and in a substantially horizontal state at an interval. And between the jumper pipes so as not to protrude from the upper and lower surfaces of the jumper pipe.

According to a second aspect of the present invention, in the pipe type jumper device for an overhead transmission line according to the first aspect, the plate-like weights are composed of a plurality of stacked weights.

According to a third aspect of the present invention, in the pipe type jumper apparatus for an overhead transmission line according to the first aspect, a flat weight is provided between two spacers in the longitudinal direction of the pipe for maintaining a space between two right and left jumper pipes. It is characterized by being arranged via a mounting bracket.

According to a fourth aspect, in the pipe type jumper device for an overhead transmission line according to the first aspect, the weight mounting bracket has a Z-shape, and the Z-shaped upper flange is fixed to the spacer.
The flat end of the flat weight is mounted and fixed to the Z-shaped lower flange.

[0009]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIGS. FIG. 1 shows a standard type pipe jumper device 1, and FIG. 2 shows only a jumper pipe portion in FIG. The transmission line 2 on both sides of the tower is gripped by a tension anchor 3 and secured to a tower arm (the tension plate shown in the drawing) by a yoke 4, a tension insulator series 5 and the like. A jumper pipe 7 made of an aluminum pipe disposed below the tower arm 6 in a substantially horizontal state is suspended at both ends by a support rod 8 having an upper end connected to the yoke 4. The jumper stranded wire 9 has a jumper socket 9a compression-connected to one end thereof connected to an electrical connection portion of the retention clamp 3, and a connection socket 9b compression-connected to the other end thereof has a blade terminal 7a at the end of the jumper pipe 7.
To electrically connect the transmission line 2 to the jumper pipe 7. Numeral 10 is a jumper spacer for keeping the interval between the jumper stranded wires 9.

In the present invention, as shown in FIG.
A flat weight (weight) 11 is provided between the two right and left jumper pipes 7 arranged in parallel with each other in a substantially horizontal state at an interval and so as not to protrude from the upper and lower surfaces of the jumper pipe 7. It is arranged between the pipes 7. In this embodiment, the plate-shaped weights 11 are provided at two places on both sides in the longitudinal direction between the two jumper pipes 7, and each of the two weights is connected to the right and left jumper pipes 7 at predetermined intervals. It is attached between the spacers 12 at the locations. As shown in detail in FIG. 4, the spacer 12 includes an upper member 13 having an arc-shaped portion 13a on both sides and a lower member 14 also having an arc-shaped portion 14a on both sides. At 14a, the right and left jumper pipes 7 are clamped and fixed with bolts 15. As shown in FIG. 5, the weight mounting bracket 16 has a Z-shaped cross section, the upper flange 16a is fixed to the upper surface of the spacer 12 with bolts 17, and the end of the flat weight 11 is fixed to the Z-shaped lower flange 16b. And fixed with bolts 18 penetrating holes formed in the flat weight 11. On the upper surface of the spacer 12 on the end side of the jumper pipe 7, a base plate portion 19 a of a suspending bracket 19 connecting the lower end of the support rod 8 and a weight mounting bracket 16 are attached in an overlapping manner. In the embodiment,
A plurality of plate-shaped weights 11 are stacked (stacked).

In the above-mentioned pipe type jumper device 1,
The plate-shaped weight 11 increases the weight of the jumper pipe 7 and functions to suppress the lateral swing of the jumper pipe 7 due to the wind. In this case, the weight to be added to the jumper pipe 7 can be adjusted by adjusting the number of laminations of the plate-shaped weights 11, so that the clearance characteristic between the jumper pipe 7 and the tower body when the jumper pipe sways is considered. The added weight can be easily adjusted, and a rational design is possible. Further, by adjusting the length, width, plate thickness, and other dimensions of the flat weight 11, the weight to be added to the jumper pipe 7 can be adjusted. In addition, a flat weight 1
Since 1 is located between the two right and left jumper pipes 7 and does not protrude from the upper and lower surfaces of the jumper pipe 7, the protrusion does not cause an increase in the potential gradient and does not deteriorate the corona characteristics. In addition, a flat weight 1
1 does not protrude from the upper and lower surfaces of the jumper pipe 7 and is shielded by the jumper pipe 7, so that the wind pressure load against the crosswind does not increase, and therefore, there is no problem that adversely affects the overall swing of the jumper device. Further, it is extremely easy to fix the flat weight 11 to the weight mounting bracket 16 mounted on the spacer 12 with the bolts 18 and the workability is good. In addition, weight can be added at low cost. In addition, in the case of the jumper devices 1A, 1B, and 1C of the insulator suspension system as shown in FIGS. 6, 7, and 8, the vertical load component is always applied to the insulators 20, 21, and 22 by adding the flat weight 11. Since it is added, there is no possibility that pulse noise is generated at all times or when the jumper swings.

The pipe-type jumper device to which the present invention can be applied is not limited to the standard type pipe-type jumper device 1 described above, and as shown in FIG. The present invention is also applicable to a single-point single-hanging pipe-type jumper device 1A. Also, as shown in FIG. 7, the present invention can be applied to a two-point single-hanging pipe-type jumper device 1B in which two places near the center of the jumper pipe 7 are respectively suspended by suspension insulators 21. As shown in FIG. 8, an inverted V-type two-point single-hanging pipe-type jumper device that supports both ends of the jumper pipe 7 at the lower ends of two insulator rows 22 each having the upper end connected to the tower arm 6. Also applicable to 1C. in short,
The method of supporting the jumper pipe 7 is arbitrary. 6, 7, and 8, the position where the flat weight 11 is provided and the structure of other parts except the support structure of the jumper pipe 7 are common to the embodiments of FIGS. 1 to 5.

In the embodiment, the plate-shaped weights 11 are arranged at two places on both sides in the longitudinal direction of the jumper pipe 7.
It can also be located in the middle. In the embodiment,
Although the flat weight 11 is mounted on the spacer 12 via the weight mounting bracket 16, a weight mounting bracket 25 supporting the flat weight 11 may be directly mounted on the jumper pipe 7, as shown in FIG. The weight mounting bracket 25 of the illustrated example is composed of two upper and lower mounting plates 26 and 27 that sandwich the jumper pipe 7 and has a recess 25a.
And the flat weight 11 is provided in the recess 25a.
And fixed with bolts 28.

Also, when attaching to the spacer 12, not only the Z-shaped weight mounting bracket 16 described above but also a weight mounting bracket whose shape is appropriately changed can be used.

[0015]

According to the pipe type jumper device for an overhead transmission line of the present invention, the flat weight is disposed between the two right and left jumper pipes so as not to protrude from the upper and lower surfaces of the jumper pipe. Since the configuration is arranged between them, the following various effects can be obtained. Placing a flat weight between two jumper pipes makes it possible to add weight very easily and at low cost compared to a method of increasing the wall thickness of a pipe or a method of inserting and fixing a steel rod in a pipe. In addition, the desired object for preventing the lateral movement of the jumper device can be achieved without the maintenance difficulty as in the case where the steel rod is inserted and fixed in the pipe. Since the flat weight is between the two jumper pipes on the left and right and does not protrude from the upper and lower surfaces of the jumper pipe,
There is no danger of deteriorating corona properties. The flat weight does not protrude from the upper and lower surfaces of the jumper pipe and is shielded by the jumper pipe, so that the wind pressure load against the cross wind does not increase, and therefore, there is no problem that adversely affects the lateral runout of the entire jumper device. . In the case of a pipe jumper device of the insulator suspension type, a vertical load component is always applied to the insulator by adding a flat weight, so that there is no possibility that pulse noise is generated at all times or when the jumper swings.

According to the second aspect of the present invention, the weight to be added to the jumper pipe can be easily adjusted by adjusting the number of stacked flat weights since the flat weight is composed of a plurality of stacked ones. It is easy to adjust the additional weight in consideration of the clearance characteristic between the jumper pipe and the tower body when the jumper pipe sways, and a rational design is possible. Also, the length of the flat weight,
The weight to be added can also be easily adjusted by adjusting dimensions such as width and plate thickness.

According to the third aspect, the plate-shaped weight is disposed between the two jumper pipes by using the spacer, so that the plate-shaped weight can be disposed more easily and inexpensively between the jumper pipes. .

According to the fourth aspect, since the flat weight is disposed between the two jumper pipes so as to be mounted on the Z-shaped weight mounting bracket mounted on the spacer, the flat weight is further simplified and inexpensive. Can be arranged between the jumper pipes.

[Brief description of the drawings]

FIG. 1 is a front view showing a pipe type jumper device for an overhead transmission line according to an embodiment of the present invention.

FIG. 2A is an enlarged front view showing only a jumper pipe portion in FIG. 1, and FIG. 2B is a plan view of FIG.

FIG. 3 is an enlarged view of a portion A in FIG. 2;

FIG. 4 is a sectional view taken along the line CC of FIG. 3;

FIG. 5A is an enlarged front sectional view taken along line BB of FIG. 2, and FIG. 5B is a perspective view showing only the weight mounting bracket in FIG.

FIG. 6 shows another example of a pipe-type jumper device to which the present invention can be applied, and is a front view of a single-point single suspension pipe-type jumper device.

FIG. 7 is a front view of a two-point single-suspension pipe-type jumper device showing still another example of the pipe-type jumper device to which the present invention can be applied.

FIG. 8 is a front view of an inverted V-shaped two-point single-suspension pipe-type jumper device showing still another example of the pipe-type jumper device to which the present invention can be applied.

FIG. 9 shows another embodiment of the present invention, and is a cross-sectional view of a part of a weight mounting bracket directly mounted on a jumper pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1A, 1B, 1C Pipe-type jumper device 2 Transmission line main line 3 Retention clamp 4 Yoke 5 Tension insulator connection 6 Steel tower arm 7 Jumper pipe 8 Supporting rod 9 Jumper stranded wire 11 Flat weight 12 Spacer 13 Upper member 14 Lower side Member 15, 17, 18 Bolt 16 Weight mounting bracket 19 Hanging bracket 19a Base plate of hanging bracket 20, 21 Hanging insulator chain 22 Insulator chain 25 Weight mounting bracket 25a Recess 26 Upper member 27 Lower member 28 Bolt

[Procedure amendment]

[Submission Date] August 7, 2000 (2000.8.7)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0003

[Correction method] Change

[Correction contents]

[0003]

According to the above-mentioned method of increasing the wall thickness of the pipe, since the jumper pipe is usually manufactured by extrusion using a mold, the metal pipe corresponding to the pipe thickness corresponding to the required weight addition is usually used. It is necessary to make a new type, it is not easy to deal with, and the cost increases.
Moreover, it is extremely difficult to set an arbitrary weight by weight. The method of inserting a steel rod into the pipe, it is necessary to fix by welding or the like so that the steel rod does not move, but the welding operation is complicated and the manufacturing cost increases,
There is a drawback that maintenance is difficult because it is fixed by welding inside the pipe.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004] The present invention has been made in view of the above points,
It is an object of the present invention to provide a pipe-type jumper device for overhead transmission lines that can easily add weights at a low cost, can easily set a weight of any weight , and is easy to maintain. And

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006] Claim 2 is the pipe type jumper device for overhead transmission lines according to claim 1, flat weight, characterized in that consist of a plurality of stacked.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

In the present invention, as shown in FIG.
A flat weight (weight) 11 is provided between the two right and left jumper pipes 7 arranged in parallel with each other in a substantially horizontal state at an interval and so as not to protrude from the upper and lower surfaces of the jumper pipe 7. It is arranged between the pipes 7. In this embodiment, plate-shaped weights 11 are provided at two places on both sides in the longitudinal direction between two jumper pipes 7, and in each case, two weights in the pipe longitudinal direction for holding the right and left jumper pipes 7 at a predetermined interval. It is attached between the spacers 12 at the locations. As shown in detail in FIG. 4, the spacer 12 includes an upper member 13 having an arc-shaped portion 13a on both sides and a lower member 14 also having an arc-shaped portion 14a on both sides. At 14a, the right and left jumper pipes 7 are clamped and fixed with bolts 15. As shown in FIG. 5, the weight mounting bracket 16 has a Z-shaped cross section, the upper flange 16a is fixed to the upper surface of the spacer 12 with bolts 17, and the end of the flat weight 11 is fixed to the Z-shaped lower flange 16b. And fixed with bolts 18 penetrating holes formed in the flat weight 11. On the upper surface of the spacer 12 on the end side of the jumper pipe 7, a base plate portion 19 a of a suspending bracket 19 connecting the lower end of the support rod 8 and a weight mounting bracket 16 are attached in an overlapping manner. In the embodiment,
A plurality of plate-shaped weights 11 are stacked (stacked).

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

According to claim 2, since from that flat weight is a plurally stacked, by adjusting the number of stacking of flat weight, to easily adjust the weight to be added to the jumper pipe It is easy to adjust the additional weight in consideration of the clearance characteristic between the jumper pipe and the tower body when the jumper pipe sways, and a rational design is possible. Also, the length of the flat weight,
The weight to be added can also be easily adjusted by adjusting dimensions such as width and plate thickness.

Claims (4)

[Claims] 1. A flat weight is disposed between two jumper pipes arranged in parallel and substantially horizontally at an interval so as not to protrude from the upper and lower surfaces of the jumper pipe. A pipe type jumper device for an overhead power transmission line, characterized by being provided. 2. The pipe-type jumper device for an overhead transmission line according to claim 1, wherein said plate-shaped weights are composed of a plurality of stacked weights. 3. The flat plate-shaped weight is disposed between two spacers in the longitudinal direction of the pipe for keeping a space between two right and left jumper pipes via a weight mounting bracket. Pipe jumper for overhead transmission lines. 4. The weight mounting bracket has a Z-shape, an upper flange of the Z-shape is fixed to a spacer, and an end of a flat weight is mounted and fixed on a lower flange of the Z-shape. The pipe type jumper device for an overhead transmission line according to claim 1.