JP3359019B2 - Active horn tip cap mounting rod - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension insulator device for supporting an overhead power transmission line on a power transmission tower or a ground insulator of a tension insulator device. By shutting down in advance to prevent a power outage accident,
The present invention relates to a mounting rod for a tip cap of an active horn used to supply a stable power.

[0002]

2. Description of the Related Art An active horn is composed of a grounding-side arc horn attached to a steel tower side of a supporting insulator device of a transmission line, an insulating cylinder having a base fixed to a tip thereof, and an intermediate side of the insulating cylinder. An intermediate electrode is provided, and the intermediate electrode is installed so as to face the end of the line-side arc horn of the supporting insulator device with a predetermined air gap, and lightning strikes on the overhead transmission line. When this occurs, the tower voltage rises and discharges through the intermediate electrode between the arc horns on the ground side and the line side to cause lightning current to penetrate the insulating cylinder body. The temperature inside the body rises, and the rise of pressure, the generation of arc-extinguishing gas, and the ejection of arc jet are instantaneously interrupted in the insulating cylinder to prevent a power failure accident (Japanese Patent Laid-Open No. 8-321372). See Japanese).

The operation display cap attached to the tip of the insulating horn of the active horn is blown off by the ejection of the arc jet generated at the time of the above operation, and it is determined that the operation of interrupting the downstream flow at the time of lightning is performed. You. This active horn has been recently developed, and it is said that it can be used up to about 5 times to cut off the following current during a lightning strike. However, after each operation, it is used as a guide for the next operation display. For this reason, a new operation display cap is mounted and repaired to prevent deterioration due to intrusion of moisture into the insulating cylinder and to prevent intrusion of dust and the like.
This repair work is being carried out as part of the maintenance and inspection work for transmission lines.

[0004]

In the above-mentioned repair work for mounting the tip cap of the active horn, the worker has a risk of electric shock because the worker directly holds the cap by hand in the conventional construction method. , The transmission of the transmission line was stopped. Recently, with the widespread use of personal computers, etc., it is required to avoid power outages as much as possible.
For this reason, conventionally, the mounting and repair work of the tip cap of the active horn has been performed simultaneously and in parallel at a plurality of locations for each transmission line system, and it is necessary to concentrate a large number of workers, resulting in a large labor cost. There was a problem in that it required In addition, in the case of lightning, etc., the tip cap disappears immediately after the installation and repair, and often needs to be installed and repaired again. There is a problem in that not only the reliability of the system is reduced, but also the number of workers increases.

Accordingly, the present invention makes it possible to carry out the installation and repair work of the tip cap safely without interruption when necessary, to improve the reliability of the power supply, reduce the number of workers, It is an object of the present invention to provide an active horn tip cap mounting rod which can prevent deterioration of the active horn.

[0006]

In order to achieve the above object, according to the present invention, an active horn tip cap mounting rod is provided with a main body comprising an insulating operating rod, and a cap mounting tool mounted on the front end of the main body. The part consists of a cap
Make sure that the mounting tool is perpendicular to the
Fixed to be adjustable in angle about a first axis in the direction
An arm and a first arm perpendicular to the first axis at a tip of the first arm.
Mounted rotatably about the second axis via two axes
A second arm, fixed to a tip of the second arm,
And a cap holding portion that allows the cap to be inserted and removed in parallel . With this configuration, in the repair work of the active horn tip cap, a new cap is inserted and held in the cap attaching tool part, and the main body is operated to direct the tip cap attaching tool part to the tip of the active horn insulating cylinder. The active horn can be fitted and inserted by pushing the cap held by the cap attaching tool into the tip of the insulating cylinder of the active horn. Since the main body consists of insulated operation rods, the operator can remotely operate the cap mounting tool at the tip from a position away from the live line to safely carry out the repair work of attaching a new cap to the tip of the active horn without interruption The reliability of the power supply can be improved, and the necessary parts can be individually repaired when necessary, so that the number of workers can be reduced and the horn can be prevented from deteriorating.

[0007]

In addition, according to the above configuration, the cap holding portion is optimized by adjusting the mounting angle of the first arm with respect to the main body for both the suspension type and the tension type supporting insulator device of the transmission line. Can be set to the orientation of
And, since the second arm is rotatable, when the cap is pushed and inserted into the tip of the active horn, the cap can be pushed in while rotating around the axis of the tip of the active horn via the cap holding portion, The cap can be easily and smoothly mounted.

According to a second aspect of the present invention, there is provided an active horn tip cap mounting rod, wherein a plurality of cap holding portions are provided at the tip of the second arm corresponding to a plurality of cap sizes. With this configuration, 22 kv
It can correspond to the active horn of any transmission line up to 77 kv, and even if transmission lines with different voltages are installed and supported on the same steel tower, the work can be carried out with this tool as it is. Performance can be improved.

[0010] The active horn tip cap mounting rod according to a third aspect of the present invention is characterized in that the length of the main body is adjustable in a telescopic manner. This configuration is convenient because it can be shortened when storing, carrying, climbing up and down a steel tower, and can be adjusted to the required length during repair work, so safety and operability Is improved and convenient.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1A is a front view of a contracted state of the mounting rod, FIG. 1B is a front view of an extended state thereof,
(C) is a right side view thereof, (D) is a schematic cross-sectional view showing the relationship between the tip of the active horn, the cap and the cap holding portion at the tip of the main mounting rod, and (A) of FIG. FIG. 4B is a schematic plan view showing an example of a work of attaching a cap to the tip of the active horn, and FIG. 4B is a schematic perspective view of a main part showing a relationship between an active horn on the ground side and an arc horn on the track side.

In FIG. 1, reference numeral 1 denotes a main body, and 2 denotes a cap mounting tool. The main body 1 is composed of an insulating operating rod made of an electrically insulating material such as glass fiber reinforced plastic or the like and having a length adjustable in a plurality of stages (four stages in the figure). Until the outer diameter is gradually reduced, for example, φ40mm, φ36m sequentially from the base end
m, φ32 mm, φ28 mm round bar shape, the storage dimensions including the cap mounting tool part 2 are 862 mm,
The total length when extended is 2287 mm and the total weight is 1144
g. The outer diameter, length, weight and the like are not limited to the above numerical values.

The cap attaching tool 2 includes a base 2a attached to the tip of the main body 1, and a first shaft 2 with respect to the base 2a.
First arm 2c fixed so as to be adjustable in angle around b
A second arm 2e rotatably mounted on the distal end of the first arm 2c about the second axis 2d via a second axis 2d orthogonal to the first axis 2b, and a distal end of the second arm 2e. And cap holding portions 2f and 2g which allow the cap 3 to be inserted and removed in parallel with the second shaft 2d.

The base 2a, the first arm 2c, the second arm 2e and the cap holders 2f, 2f
g is made of an electrically insulating resin material,
The first shaft 2b has a thumb screw structure to facilitate loosening and tightening operations during angle adjustment.

The base 2a and the base end of the first arm 2c are arranged around a first axis 2b in a direction perpendicular to the longitudinal direction of the main body 1,
As shown in FIG. 1B, it is configured such that it can be adjusted to an arbitrary angle within a range of 90 degrees left and right and fixed.
For example, on one surface of the contact surface between the base 2a and the first arm 2c, a plurality of pin holes are formed at an interval of 15 degrees around the first axis 2b. The pin is provided, and the angle of the first arm 2c with respect to the base 2a can be adjusted at intervals of 15 degrees. In place of this, serrations such as chevron irregularities may be employed.

The second shaft 2d pivotally connects the distal end of the first arm 2c and the proximal end of the second arm 2e so as to be rotatable around an axis orthogonal to the first shaft 2b. As shown in (C), the second arm 2e is pivotally attached to the first arm 2c so that the second arm 2e can rotate freely within a range of 90 degrees left and right. However, the second arm 2e does not rotate by its own weight, but is given such a resistance that the second arm 2e is rotated by an operation force when the operator attaches the cap 3 to the tip of the active horn 4.

The cap holding portions 2f and 2g are fixed to both ends of the tip of the second arm 2e with mounting screws 2h and 2i. As shown in FIG. 1D, the cap holding portions 2f and 2g have holding holes 2j and 2k that allow the cap 3 attached to the tip of the active horn 4 to be inserted and removed in parallel with the second shaft 2d. . Each of the holding holes 2j and 2k has a hexagonal hole shape that is open on one side, and has an inner peripheral surface shape such that the outer peripheral surface of the cap 3 is circumscribed and lightly held. Note that the holding holes 2j and 2k may have other shapes that can provide a holding force enough to partially contact the outer peripheral surface of the cap 3 and prevent the cap 3 from dropping under its own weight.

The embodiment of the mounting rod according to the present invention is constituted as described above. Next, the method of use will be described with reference to FIG. First, FIG. 2B shows the relationship between the active horn 4 on the ground side and the arc horn 5 on the track side, and the active horn 4 is, as shown in FIG. The base of the ground-side arc horn 4a is connected to the base end of a support insulator device 8 whose base end is connected and supported by the arm 7 of the base. An insulating cylindrical body 4b is mounted on the tip side of the ground-side arc horn 4a by an annular umbrella portion 4c formed in two steps near the front end of the horn 4a, and a cap is attached to the distal end of the insulating cylindrical body 4b. 3 is attached. As shown in FIG. 1D, an annular convex portion 4d for retaining is formed at the tip of the insulating cylinder 4b.
Correspondingly, the annular recess 3a is also provided on the inner peripheral surface of the cap 3.
Is formed. The cap 3 is made of an insulating resin. The tip 4a 'of the ground-side arc horn 4a has a sharp end, is disposed in the insulating cylinder 4b, and the intermediate electrode 4e is attached to a side surface near the tip of the insulating cylinder 4b. The ground-side arc horn 4a is coated with vinyl chloride to prevent bird damage. Correspondingly, the line-side arc horn 5 is connected to a transmission line clamp fitting 9 at the tip of the support insulator device 8 as shown in FIG. The tip 4a 'of the ground-side arc horn 4a and the tip of the line-side arc horn 5 are arranged with a predetermined air gap. Discharge occurs between the tip of the arc horn 5 on the line side via the intermediate electrode 4e, lightning current penetrates through the insulating cylinder 4b, the temperature inside the insulating cylinder 4b increases, and the internal pressure increases. As a result, an arc-extinguishing gas is generated, and is ejected from the tip of the insulating cylinder 4b as an arc jet, thereby immediately interrupting the continuation flow and preventing a power failure accident. At this time, the cap 3 attached to the tip of the insulating cylinder 4b
Is blown away. In order to repair this, as shown in FIG. 2A, an operator 10 attaches a lifeline 11 and climbs the steel tower 6, takes out the permanent mounting rod at a predetermined position, and attaches a new cap 3 to the tip of the main body 1. Is inserted and held in any one of the cap holding portions 2f and 2g of the cap attaching tool portion 2. For example, in the case of the transmission line 12 of 22 kv and 33 kv, the cap holder 2f is used, and in the case of 77 kv, the cap holder 2g is used. Then, the main body 1 is extended to adjust its length, and the mounting angle is adjusted so that the cap mounting tool 2 at the tip of the main body 1 comes into close contact with the tip of the active horn 4 and the cap 3 is pushed in. While rotating the second arm 2e, the cap 3 slides over the annular convex portion 4d at the tip of the insulating cylindrical body 4b, gets over the annular concave portion 3a, and the mounting is completed. Since the holding holes 2j and 2k of the cap holding portions 2f and 2g of the cap attaching tool portion 2 only lightly hold the outer periphery of the cap 3, when the mounting of the cap 3 is completed as described above, the main body 1 is removed. If it is operated in the opposite direction, it can be easily pulled out. Repair work is
In some cases, the procedure is performed at a plurality of locations on the same tower, in which case the procedure is performed by moving to the next position. In addition, it is moved to another steel tower and repair work is also performed for inspection.

[0019]

According to the first aspect of the present invention, in repairing and attaching the active horn tip cap, a new cap is inserted into and held by the cap attaching tool, and the main body is operated so that the tip cap attaching tool is attached. The active horn is moved toward the distal end of the insulating cylindrical body, and the cap held by the cap mounting tool portion is pushed into the distal end of the insulating cylindrical body of the active horn so that the active horn can be fitted and inserted. Since the main body consists of insulated operation rods, the operator can remotely operate the cap mounting tool at the tip from a position away from the live line to safely carry out the repair work of attaching a new cap to the tip of the active horn without interruption The reliability of the power supply can be improved, and the necessary parts can be individually repaired when necessary, so that the number of workers can be reduced and the horn can be prevented from deteriorating.

[0020]

In addition, the cap holder is set in an optimal direction by adjusting the mounting angle of the first arm with respect to the main body for both the suspension type and the tension type supporting insulator device for the transmission line. When the cap is pushed into the tip of the active horn by inserting the cap into the tip of the active horn by rotating the second arm, the cap is pushed through the cap holder while rotating around the axis of the tip of the active horn. Therefore, the cap can be easily and smoothly mounted.

According to the invention of claim 2 , 22 kv to 77 kv
This tool can be used with any horn of any transmission line up to kv, and even when transmission lines with different voltages are installed and supported on the same tower, the tool can be used to carry out work as it is. Can be improved.

According to the third aspect of the present invention, it can be shortened at the time of storage, carrying, climbing up and down on a steel tower, and is convenient. As a result, safety and operability are improved, and this is convenient. that's all

[Brief description of the drawings]

FIG. 1A is a front view of a contracted state of the mounting rod, and FIG.
Is a front view of the extended state, (C) is a right side view thereof,
(D) is a schematic sectional view showing the relationship between the tip of the active horn, the cap, and the cap holding portion at the tip of the main mounting rod.

FIG. 2A is a schematic plan view showing an example of an operation of attaching a cap to a tip of an active horn on a steel tower by using a mounting rod, and FIG. 2B is an active horn on a ground side and an arc horn on a track side. FIG. 4 is a schematic perspective view of a main part showing a relationship with the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Cap attaching tool part 2a Base 2b 1st axis 2c 1st arm 2d 2nd axis 2e 2nd arm 2f, 2g Cap holding part 2h, 2i Mounting screw 2j, 2k Holding hole 3 Cap 3a Annular concave part 4 Active horn 4a Ground side arc horn 4b Insulating cylindrical body 4c Annular umbrella 4d Annular convex part 4e Intermediate electrode 5 Line side arc horn 6 Iron tower 7 Arm 8 Support insulator device 9 Transmission line clamp fitting 10 Worker 11 Lifeline 12 Transmission line

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasutaka Kodama 3-3-22 Nakanoshima, Kita-ku, Osaka-shi, Osaka Inside Kansai Electric Power Company (72) Inventor Tomoya Sugino 3-3-Nakanoshima, Kita-ku, Osaka, Osaka 22 Kansai Electric Power Co., Inc. (56) References JP-A-8-321372 (JP, A) JP-A-6-342685 (JP, A) JP-A-2000-13943 (JP, A) JP-A-4-34812 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02G 1/02 H02G 7/00

Claims (3)

(57) [Claims] A body (1) comprising an insulated operating rod, and a body (1)
And a cap mounting tool section (2) attached to the tip of the main body, and the cap mounting tool section (2) is
An angle around a first axis (2b) in a direction perpendicular to the longitudinal direction of (1)
A first arm (2c) fixedly adjustable in degree and a first arm
(2c) through a second axis (2d) orthogonal to the first axis (2b).
And a second shaft rotatably mounted about the second shaft (2d).
The arm (2e) is fixed to the tip of the second arm (2e).
Cap with removable cap (3) parallel to axis (2d)
It is characterized by comprising a holding part (2f) and (2g)
Active horn tip cap mounting rod. 2. A cap holding portion (2f), (2g) is, according to claim 1, characterized in that it is a plurality installed corresponding to the plurality of cap sizes at the tip of the second arm (2e) Active horn tip cap mounting rod. 3. A body (1) is an active horn tip cap mounting rod according to claim 1 or 2, characterized in that there is a length adjustable telescopically.