JPH0673891U - Arc horn for lightning arrester body - Google Patents

Abstract

(57) [Abstract] [Purpose] A lightning arrester that can be installed regardless of the installation location such as horizontal arrangement location or angle location of power transmission line, and can be compatible with various sizes of lightning arrester body. Provide an arc horn for the main body. [Structure] The grounding side arc horn 1 has a metal ring portion 22.
And the mounting leg portion 2, and the ring portion 22 has an opening 1a. Two sets of screw holes 4a are transparently provided at opposing positions in the hook-shaped bent portion 4 of the mounting leg portion 2. Then, by inserting a set of bolts and nuts 5 into the two sets of screw holes 4a and tightening them, the hooked portions 4 can be tightened. Therefore, the portion 4 of the mounting leg portion 2 bent in a hook shape is attached to the ring portion 22.
It is possible to fix the mounting leg portion 2 to the ring portion 22 at an arbitrary position by engaging with the ring portion 22 and tightening the portion 4 bent into a hook shape by the set of bolts and nuts 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an arc horn (arc ring) for a lightning arrester body.

[0002]

[Prior art]

 A grounding side arc horn and a charging side arc horn are provided on the grounding side and the charging side of the lightning arrester body, respectively. These arc horns are provided to prevent the lightning arrester body from exploding and scattering due to the follow current when the lightning current exceeds the expected value and the lightning arrestor element is damaged or deteriorates. In other words, when a lightning current is applied to the body of the lightning arrester, the arc horn on the ground side and the arc horn on the electricity applying side generate an arc to let the lightning current escape and prevent the lightning current from being exceeded to the expected value. It does.

FIG. 5 is a plan view of a conventional grounding side arc horn 21. Further, FIG. 6 is a side view of the ground side arc horn 21 as seen from the direction of arrow A in FIG. The ground-side arc horn 21 is composed of a metal ring portion 22 and a metal mounting leg portion 23. The ring portion 22 has a C-shape, and both ends of the C-shaped cut portion extend outward in parallel to form an opening 21a. The mounting leg portion 23 is fixed on the circumference of the ring portion 22 by welding at a position point-symmetrical to the opening 21 a with respect to the center of the ring portion 22. The mounting leg portion 23 is provided with a washer portion 23a for attaching to the body of the lightning arrester, and the washer portion 23a is provided with a threaded hole 23b.

FIG. 7 is a plan view of a conventional charging-side arc horn 31. Further, FIG. 8 is a side view of the voltage application side arc horn 31 viewed from the direction of arrow A in FIG. 7. The charging side arc horn 31 is composed of a metal ring portion 32 and a metal mounting leg portion 33. The ring portion 32 has a C-shape, and both ends of the C-shaped cut portion extend outward in parallel to form an opening 31a. The mounting leg portion 33 is fixed on the circumference of the ring portion 32 by welding at a position point-symmetrical to the opening 31 a with respect to the center of the ring portion 32. The mounting leg portion 33 is provided with a washer portion 33a for attaching to the body of the lightning protection device, and the washer portion 33a is provided with a threaded hole 33b.

FIG. 9 is a schematic view showing a state in which the grounding side arc horn 21 and the charging side arc horn 31 are attached to the lightning protection device main body 41. In FIG. 9, (a) is a schematic side view of the apparatus, (b) is a schematic plan view thereof, and (c) is a schematic bottom view thereof.

The lightning protection device body 41 and the jumper support insulator 42 are fixed by a fixing plate 43. The grounding side arc horn 21 is attached to the upper part of the lightning arrester body 41, and the charging side arc horn 31 is attached to the lower part of the lightning arrester body 41. Here, the ground-side arc horn 21 and the charging-side arc horn 31 are attached so that the openings 21a and 31a face the opposite side of the jumper support insulator 42.

FIG. 10 is a schematic plan view showing how the lightning arrester body 41 and the grounding side arc horn 21 are attached to the power transmission line 51 and the tower 52. The lightning arrester main body 41 and the fixing plate 43 of the jumper supporting insulator 42 are attached to the tower body 52. The power transmission line 51 is attached to the tower body 52 via a tension insulator string 53. Here, the grounding side arc horn 21 and the charging side arc horn 31 are attached so that the openings 21a and 31a face the opposite sides of the power transmission line 51 and the tower body 52, respectively.

As described above, in the grounding side arc horn 21 and the charging side arc horn 31, each opening 21a, 31a does not face any one of the jumper supporting insulator 42, the power transmission line 51 and the tower body 52. Is installed as. This is an accident in which the arc jets ejected from the openings 21a and 31a flow into the jumper support insulator 42, the power transmission line 51, and the tower 52 when the ground side arc horn 21 and the charging side arc horn 31 generate an arc. This is to prevent

Therefore, at a 90 ° angle portion of the power transmission line 51 as shown in FIG. 11 or at a horizontal arrangement portion, instead of the grounding side arc horn 21 and the charging side arc horn 31, a ground side arc horn is used. 61 and the arc horn 71 on the charging side must be used.

FIG. 12 is a plan view of the ground side arc horn 61. The only difference between the grounding side arc horn 61 and the grounding side arc horn 21 is the mounting position of the mounting leg portion 23 to the ring portion 22. That is, the mounting leg portion 23 of the ground side arc horn 61 is fixed by welding on the circumference of the ring portion 22 at a position forming an angle of 90 ° with the center of the ring portion 22 from the opening 61a. .

Therefore, at the 90 ° angle position of the power transmission line 51 as shown in FIG. 11 or at the horizontal arrangement position, the opening 61 a of the ground side arc horn 61 has the jumper support insulator 42, the power transmission line 51, and the tower body. It may not be suitable for any of 52.

FIG. 13 is a plan view of the charging side arc horn 71. The difference between the charging side arc horn 71 and the charging side arc horn 31 is only in the mounting position of the mounting leg portion 33 to the ring portion 32. That is, the attachment leg portion 33 of the power-charging arc horn 71 is fixed by welding on the circumference of the ring portion 32 at a position forming an angle of 90 ° with the center of the ring portion 32 from the opening 71a. There is.

Therefore, similarly to the grounding side arc horn 61, at the 90 ° angle position of the power transmission line 51 as shown in FIG. 11 and at the horizontal arrangement position, the opening 71 a of the power application side arc horn 71 is jumper-supported. It is possible not to face the insulator 42, the power transmission line 51, and the tower body 52.

FIG. 14 is a schematic diagram showing how the grounding side arc horn 61 and the charging side arc horn 71 are attached to the lightning protection device main body 41. In FIG. 14, (a) is a schematic side view of the apparatus, (b) is a schematic plan view thereof, and (c) is a schematic bottom view thereof.

[0015]

[Problems to be solved by the device]

 By the way, the angle portion of the power transmission line 51 is not limited to 90 °, but various angles depending on the installation location of the tower body 52. Therefore, it is necessary to separately design and manufacture the grounding side arc horn and the charging side arc horn according to the angle taken by the angle portion of the power transmission line 51. Alternatively, it was necessary to prepare a large number of types of grounding-side arc horns and charging-side arc horns according to the angles taken by the angular portions of the power transmission line 51.

Further, the height (fogging) of the mounting leg portions 23, 33 of the grounding side arc horns 21, 61 and the charging side arc horns 31, 71 must be matched with the size of the lightning arrester body 41. Therefore, it is necessary to separately design and manufacture the grounding side arc horn and the charging side arc horn according to the size of the lightning arrester body 41. Alternatively, it was necessary to prepare many types of grounding-side arc horns and charging-side arc horns having “fog” according to the size of the lightning arrester body 41.

The present invention has been made in order to solve the above problems, and its purpose is to be able to attach regardless of the installation location such as a horizontal arrangement location or an angle location of a transmission line, and various An object of the present invention is to provide an arc horn for a lightning arrester body capable of coping with a lightning arrester body of various sizes.

[0018]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides an arc horn for a lightning arrester body, which comprises a mounting leg portion for attaching to the lightning arrester body to obtain a fogging and a ring portion having an opening. The gist of the invention is that it is provided separately from the ring portion and provided with a fixing member for fixing the mounting leg portion at an arbitrary position on the circumference of the ring portion.

[0019]

Therefore, according to the present invention, after the mounting leg is attached to the body of the lightning protection device, the mounting leg is fixed to an arbitrary position on the circumference of the ring by the fixing member, thereby opening the opening of the ring. Can be oriented in any suitable direction. Therefore, the arc horn for the lightning arrester body can be attached regardless of the installation location such as the horizontal arrangement location or the angle location of the attachment leg power transmission line.

Further, since the mounting leg portion and the ring portion are separate bodies, by replacing the mounting leg portion, the lightning arrester main body of any size can be supported with the ring portion being shared. be able to.

[0021]

【Example】

 An embodiment embodying the present invention will be described below with reference to FIGS. In this embodiment, the same components as those of the conventional example shown in FIGS. 5 to 14 are designated by the same reference numerals and detailed description thereof will be omitted.

FIG. 1 is a plan view of a grounding side arc horn 1 of this embodiment. 2 is a side view of the grounding side arc horn 1 as seen from the direction of arrow A in FIG. The grounding side arc horn 1 is composed of a metal ring portion 22 and a metal mounting leg portion 2.

The ring portion 22 has a C shape, and both ends of the cut portion of the C shape extend outward in parallel to form an opening 1 a. The mounting leg portion 2 is composed of a washer portion 3 for mounting to the lightning arrester body 41, a hook-shaped bent portion 4 and a set of bolts and nuts 5.

The washer portion 3 is provided with a screw hole 3 a so that it can be attached to the upper portion of the lightning arrester body 41, like the conventional ground-side arc horns 21 and 61. Two sets of screw holes 4a are formed in the hooked portion 4 at opposite positions. Then, by inserting a set of bolts and nuts 5 into the two sets of screw holes 4a and tightening them, the hooked portions 4 can be tightened.

Therefore, by hooking the hook-shaped bent portion 4 of the mounting leg portion 2 on the ring portion 22 and tightening the hook-shaped bent portion 4 with the set of bolts and nuts 5, the ring portion is closed. It is possible to fix the mounting leg portion 2 to 22 at an arbitrary position.

Therefore, as shown in FIG. 10 or FIG. 11, after the washer part 3 of the grounding side arc horn 1 is attached to the lightning arrester body 41, the transmission line 51 is installed at a horizontal arrangement position or an angle position. Then, the position of the opening 1a can be adjusted on the spot. That is, by preparing only one type of grounding side arc horn 1, it is possible to deal with the horizontal arrangement location of the power transmission line 51 and the angular location of any angle.

FIG. 3 is a plan view of the charging side arc horn 11 of this embodiment. Further, FIG. 4 is a side view of the voltage application side arc horn 11 as seen from the direction of arrow A in FIG. The charging side arc horn 11 is composed of a metal ring part 32 and a metal mounting leg part 12.

The ring portion 32 has a C shape, and both ends of the cut portion of the C shape extend outward in parallel to form an opening 11 a. The mounting leg portion 12 is composed of a washer portion 13 for mounting to the lightning arrester body 41, a hook-shaped bent portion 14 and a set of bolts and nuts 15.

The washer portion 13 is provided with a screw hole 13 a so that it can be attached to the lower portion of the lightning arrester body 41, similarly to the conventional charging side arc horns 31 and 71. Two sets of screw holes 14a are provided at opposing positions in the hooked portion 14. Then, by inserting the set of bolts and nuts 15 into the two sets of screw holes 14a and tightening them, the portion 14 bent into a hook shape can be tightened.

Therefore, the hook-shaped bent portion 14 of the mounting leg portion 12 is engaged with the ring portion 32, and the hook-shaped bent portion 14 is tightened by the set of bolts and nuts 15. The mounting leg portion 12 can be fixed at any position.

Therefore, like the grounding side arc horn 1, after the washer part 13 of the charging side arc horn 11 is attached to the lightning protection device main body 41, it is installed at a location such as a horizontal arrangement location or an angle location of the power transmission line 51. Accordingly, the position of the opening 11a can be adjusted on the spot. That is, it is possible to deal with the horizontal arrangement location of the power transmission line 51 and the angular location of any angle only by preparing one type of the charging side arc horn 11.

As described above, in the grounding side arc horn 1 and the charging side arc horn 11 of this embodiment, the mounting leg portions 2 and 12 can be fixed to the ring portions 22 and 32 at arbitrary positions. By doing so, the power transmission line 51 can be attached regardless of the installation location such as a horizontal array location or an angle location.

Further, since the mounting leg portions 2 and 12 can be removed from the ring portions 22 and 32, the ring portions 22 and 32 can be replaced by replacing the mounting leg portions 2 and 12 with different “fogs”. It can be used for any size of the lightning arrester main body 41 while being shared.

[0034]

[Effect of device]

 As described above in detail, according to the arc horn for a lightning arrester body of the present invention, the lightning arrester body of various sizes can be installed regardless of the installation location such as a horizontal arrangement location or an angle location of the transmission line. It has an excellent effect of being able to deal with.

[Brief description of drawings]

FIG. 1 is a plan view of a grounding side arc horn of an embodiment embodying the present invention.

FIG. 2 is a side view of the grounding side arc horn seen from the direction of arrow A in FIG.

FIG. 3 is a plan view of an arc horn on the charging side according to an embodiment of the present invention.

FIG. 4 is a side view of the charging-side arc horn viewed from the direction of arrow A in FIG.

FIG. 5 is a plan view of a conventional grounding side arc horn.

6 is a side view of a conventional grounding side arc horn viewed from the direction of arrow A in FIG.

FIG. 7 is a plan view of a conventional charging-side arc horn.

8 is a side view of a conventional charging side arc horn viewed from the direction of arrow A in FIG.

FIG. 9 is a schematic view showing how the grounding side arc horn and the charging side arc horn are attached to the lightning arrester body.

FIG. 10 is a schematic plan view showing how the lightning arrester body and the grounding side arc horn are attached to a power transmission line and a tower body.

FIG. 11 is a schematic plan view showing how the lightning arrester main body and the grounding side arc horn are attached to the power transmission line and the tower body at a 90 ° angle portion of the power transmission line.

FIG. 12 is a plan view of another conventional grounding side arc horn.

FIG. 13 is a plan view of another conventional charging-side arc horn.

FIG. 14 is a schematic view showing how the grounding side arc horn and the charging side arc horn are attached to the lightning arrester body.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Grounding side arc horn, 1a ... Grounding side arc horn opening, 11 ... Charging side arc horn, 11a ... Charging side arc horn opening, 2 ... Grounding side arc horn mounting leg, 12 ... Section Electron side arc horn mounting leg, 22 ... Ground side arc horn ring part, 32 ... Charging side arc horn ring part, 4 ... Ground side arc horn bent portion, 14 ... Charging side The part of the arc horn that is bent into a hook, 5 ... A set of bolts and nuts for the grounding side arc horn, 15 ... The bolts for the charging side arc horn.
Nut set, 41 ... Lightning arrester body

Claims (1)

[Scope of utility model registration request] 1. Mounting legs (2, 12) for mounting on a lightning arrester body (41) to obtain a fog, and an opening (1).
In an arc horn (1, 11) for a lightning arrester body, which comprises a ring portion (22, 32) having an a, 11a), a mounting leg portion (2, 12) and a ring portion (22, 32) are separately provided. And a fixing member (4, 14 ,,) for fixing the mounting leg (2, 12) to an arbitrary position on the circumference of the ring (22, 32).
An arc horn for a lightning arrester body, characterized by comprising: