JP3150684B2 - Degradation reaction insulator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is used when a power transmission line is supported on a steel tower, and in particular, a degradation reaction insulator which can reliably indicate that a crack has occurred on the surface of the insulator. It is about.

[Conventional technology]

Conventionally, when a suspension insulator for supporting a transmission line on a steel tower has been used for a long period of time, the insulator may deteriorate due to aging or the like, and cracks may occur in a shade portion. For this reason,
For every suspended insulator once every 10 years, workers inspected the insulator for deterioration using a defective insulator detector from above the steel tower. For this reason, there has been a problem that conventionally, a large amount of time and labor is required for the inspection work of the insulator, the work is performed at a high place, and the work involves a danger of approaching the charged part. there were.

In order to solve the above problem, the present applicant has disclosed in
In Japanese Patent Publication No. 1718, there has been proposed a degradation reaction insulator which can be easily visually inspected from the ground or a helicopter without climbing a steel tower, and the time and labor required for the inspection work can be reduced.

This insulator is provided with an annular housing filled with a deterioration indicator liquid in a cap formed on the insulator main body such as a suspension insulator, and this storage part is damaged by cracks in the cap, and the internal deterioration indicator liquid covers the cap surface. It was configured to be colored and deteriorated.

[Problems to be Solved by the Invention] However, the deterioration display liquid used in the deterioration reaction insulator has excellent permeability, but uses red ink or fuchsin dye or the like that has no wet spreading property. If a crack actually occurs, the area where the red ink and fuchsin dye are exposed from the crack to the outside is only the crack part,
There has been a problem that it is difficult to visually confirm.

An object of the present invention is to provide a display device in which, when cracks occur in an insulator, a deteriorated display liquid reliably flows out from the inside of the insulator to increase the range of coloring due to wet spreadability, thereby making it possible to quickly and reliably check for cracks visually. It is an object of the present invention to provide a deterioration reaction insulator which can be used.

[Means for solving the problem]

In order to achieve the above object, the present invention is to accommodate a solution composed of RTV silicone rubber or silicone oil, a colorant and an organic solvent in a shade portion of an insulator as a deterioration indicating liquid having wet spreading property and weather resistance. Is taking steps.

(Operation)

The present invention provides a deterioration display liquid that has wettability, spreadability, and weather resistance in addition to permeability, so that when an insulator is deteriorated and cracks are generated, the deterioration display liquid that has passed through the cracks from the inside of the insulator to the surface of the insulator. Since the steel is hardened by spreading over a wide area on the surface of the insulator, cracks can be visually confirmed.

〔Example〕

Hereinafter, an embodiment in which the present invention is embodied in a suspension insulator will be described with reference to FIGS. 1 and 2. FIG.

An insulator body 1 of a suspended insulator is formed integrally with a cylindrical portion 2 and a cap portion 3 having a fold portion 3a, and a pin fitting 4 is fixed to the center of the cylindrical portion 2 with cement 5. At the same time, a cap fitting 6 is fitted and fixed to the outer surface of the tubular portion 2 via cement 7. An engaging recess 8 is provided at the top of the cap fitting 6, and by engaging the pin fitting 4 of the suspending insulator with the engaging recess 8, a plurality of suspending insulators can be sequentially connected in the vertical direction. ing.

An annular hollow portion 9 is formed concentrically at two places in the cap portion 3 of the insulator body 1, and the hollow portion 9 is filled with a deterioration indicator liquid 11 from one of two injection holes 10. In this state, both injection holes 10 are closed by the lid 12.

In this embodiment, the insulator deterioration indicating liquid 11 has insulating properties,
An RTV silicone rubber composed of a reactive polysiloxane and a crosslinking agent such as acetoxy group, alkoxy group, and ketoxime group is used as a solution having weather resistance, permeability, and wet spreading property. It is formed by stirring a red oil-soluble dye and an organic solvent such as xylene.
The mixing ratio of the coloring agent is most preferably 5 to 20%.

Next, in the deterioration reaction insulator configured as described above, when a crack 13 occurs in the cap portion 3 of the insulator main body 1, the hollow portion 9 is also damaged together with the cap portion 3, and the deterioration display liquid 11 therein is cracked. From 13 flows out to the surface of the cap portion 3. At this time, the cracks 13 are very small gaps. However, in this embodiment, since the RTV silicone rubber having wet spreading property is used, the leaked display liquid 11 flows out due to its wet spreading property as shown in FIG. The surface of the shade part 3 is spread over a wide area and colored. After about 2 hours, the suspension is hardened at room temperature, so the deterioration of the suspension insulator does not go up to the steel tower and can be easily done with the naked eye or a telescope even from the ground or a helicopter. In addition, the visual inspection can be reliably performed. Therefore, the time and labor required for the inspection work can be significantly reduced.

Further, in this embodiment, since the deterioration indicating liquid 11 having weather resistance is hardened, the deterioration indicating liquid 11 is not washed away by rainwater, and therefore, the deterioration state can be displayed for a long time.

[Another embodiment]

Next, another embodiment of the present invention will be described with reference to FIGS.

First, in the embodiment shown in FIG. 3, an annular recess 15 is formed on the upper surface of the cap portion 3 of the insulator main body 1, and an annular glass pipe 16 is provided in the recess 15. And an adhesive 17 such as a flip. Glass pipe 16
Is covered by a lid 18.

Further, in the embodiment shown in FIG. 4, an annular groove 19 is formed integrally with the insulator main body 1, and the upper surface thereof is covered with an annular lid 20. Both injection holes 21 are closed in a state in which the groove 19 is filled with the deterioration display liquid 11 from one of the injection holes 21.

Furthermore, for example, silicone oil may be used in place of the RTV silicone rubber as the solution having wettability and spreadability of the deterioration display liquid 11.

〔The invention's effect〕

As described above in detail, according to the present invention, when a crack occurs in the shade portion of the insulator, the surface of the shade portion is colored over a wide range, and the deterioration state is clearly displayed over a long period of time. Can be easily inspected from the ground or from a helicopter without climbing to a steel tower or the like, and the visual performance can be greatly improved, and the time and labor required for the inspection work can be reduced.

[Brief description of the drawings]

FIG. 1 is a semi-longitudinal sectional view showing a deterioration reaction insulator according to the present invention, FIG. 2 is a front view showing a state in which a crack has occurred in a shade portion of the insulator and the display is colored, and FIGS. It is a fragmentary sectional view showing another example of the storage structure of the display liquid in the insulator. 1 ... insulator body, 3 ... cap part, 11 ... hollow part, 13 ... degradation display liquid consisting of a solution having permeability and wet spreadability and a coloring agent, 13 ... cracks.

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01B 17/00-17/54 G01N 21/91

Claims (1)

(57) [Claims] 1. A deterioration characterized in that a solution comprising RTV silicone rubber or silicone oil, a colorant and an organic solvent is contained in a shade of an insulator as a deterioration indicating liquid having wet spreadability and weather resistance. Reaction insulator.