KR100823955B1 - Built-in Polymer Line Post Insulator - Google Patents

Abstract

An arcing-horn insertion embedded type polymer line post insulator is provided to prevent a short circuit or a damage of an insulator by blocking an arc during an operation of an arcing-horn. An arcing-horn insertion embedded type polymer line post insulator includes a core unit(210), housing(220), an upper arm unit(240), an arcing-horn(100), and a lower arm unit. The core unit is formed to have a tower shape upwardly. The housing is ejected and formed for a polymer coating and a polymer wing to be formed on a circumference of an outer surface of the core unit. An insert composed of nuts is formed on a lower part of the core unit with an epoxy resin. A molding is formed at the upper arm unit. A high voltage cable is put on an upper part of the core unit. The polymer line post insulator has a multi-layer structure of a cylindrical shape from a lower part to a middle part. The arcing-horn which forms a lock path for protecting the line post insulator is inserted and embedded into the polymer line post insulator. The lower arm unit of a lower part of the arcing-horn is coupled with an insert of the lower part of the core unit by a bolt.

Description

Inner rod insertion type polymer line post insulator {THE LINE POSTINSULATOR INCLUED ARCING-HORN}

1 is an embodiment showing a toner horn connected to one side of the polymer line post insulator according to the related art,

Figure 2 is a cross-sectional view showing the components of the built-in embedded polymer line post insulators according to the present invention,

3 is a cross-sectional view showing the inner horn embedded in the polymer line post insulator according to the present invention,

4 is a coupling diagram illustrating a process of bonding a polymer linepost insulator and a rod of the inner rod inserted into the polymer linepost insulator according to the present invention;

Figure 5 is a cross-sectional view of the built-in embedded polymer line post insulators according to the present invention.

<Description of Major Symbols Used in Drawings>

100: Naeolhon 110: Hallyu device connecting bracket

120: current-limiting device 130: lower coupling bracket

200: polymer line post insulator 210: Koabu

220: housing 232: insert

233: ground portion 240: upper bracket

242: high voltage wire

The present invention consists of a cylindrical multilayer structure from the lower end to the middle of the core part of the line post insulator, which forms a flashover path for protecting the line post insulator (LP) and preventing wire breakage or damage of the wire coating near the support point. It relates to a polymer linepost insulator embedded with a toner horn.

In general, insulators are used to electrically insulate high voltage cables, and to be electrically insulated from each other by being connected to high voltage cables and steel towers, transmission and distribution facilities, and to maintain or support gaps of high voltage cables. It is formed by lengthening the surface leakage distance by making a plurality of wrinkles on the outer surface to increase.

Recently, polymer insulators that are light, easy to process, transport, and install have excellent electrical insulation and mechanical properties than conventional magnetic insulators.

The polymer insulator is formed of a polymer, and a plurality of polymer shades are formed at predetermined intervals on the outer circumferential surface thereof, and clevis type or eye type coupling brackets are formed at both ends of the insulator body. Is formed.

The polymer insulator is destroyed in a moment due to excessive electrical and mechanical stress, excessive high-power arc breakdown, fouling, torpedo, lightning due to snowfall, severe temperature change, pollutants such as pollutants, salinity in dust and salt areas. Deterioration may also be caused by abnormal voltages or the like.

Thus, in order to prevent insulator damage, an arcing horn (hereinafter referred to as an 'inner horn') is installed around the insulator so that when an abnormal voltage such as a torpedo or torpedo occurs, the flashover occurs between the inland and the inland horn. Damage is of course to prevent damage to the wire sheath near the support point.

Figure 1 relates to an embodiment showing the interior of the polymer line post insulator connected to one side of the insulator, which is a strong wind, because there is a metal in the middle of the line post insulator ring (11) There was a problem of being exposed to natural disasters such as heavy snowfall and heavy rain.

In addition, the arc melting phenomenon due to lightning strike caused a problem that the wire covering caused by lightning surge penetrated and flashed, causing rapid flow at the breakdown point, causing the wire to be easily melted by arc heat.

The exposure of the arcing horn 10 to the outside facilitates disconnection in contact with algae and other non-insulating objects, thereby becoming a major failure factor of the linepost insulator.

In order to solve the above problems, in the present invention, by inserting the interior of the interior of the polymer line post insulator, it is possible to prevent accidents caused by algae and other non-insulating objects, and to block the rapid arc even when the internal horn is operating The purpose of the present invention is to provide a built-in polymer line post insulator, which is easy to install and maintain, without disconnection or insulator damage.

In order to achieve the above object, the inner rod embedded polymer line post insulator according to the present invention,

A core 220 formed in the shape of a tower extending from the lower end to the upper end, and a housing 220 in which the polymer shell 220a and the polymer wing 220b are formed around the outer surface of the core part 210; The insert 232 made of a nut at the lower end of the core part 210 is molded at the same time with an epoxy resin 260, is molded up to the upper bracket 240 at the upper end, and the high-voltage wire on the upper side of the core part 210. Composed of a polymer line post insulator 200 is formed by forming a coupling groove 241 so that 242 is placed,

The polymer line post insulator 200 is formed of a cylindrical multilayer structure from the lower end of the core portion 210 to the middle portion thereof, and includes a built-in lightning rod 100 that forms a flashover path for line post insulator (LP) protection. The lower coupling bracket 130 at the lower end of the inner mine horn 100 and the insert 232 at the lower portion of the core 210 are bolted to each other by inserting a connection bolt 231.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

2 is a cross-sectional view showing the components of the built-in embedded polymer line post insulators according to the present invention, which is largely composed of the inner rod horn 100 and the polymer line post insulator (200).

First, the components of the lightning horn 100 will be described.

The lightning rod 100 according to the present invention is formed in the same structure as the core portion 210 of the polymer line post insulator, thereby preventing line post insulator (LP) protection and disconnection or damage of the wire coating near the support point. Where it serves to form a flashover path for, it is composed of a body portion 105 and the current-limiting element connecting bracket 110.

3 and 4, the body portion 105 is fixed to a core structure having a cylindrical multilayer structure from the lower end portion to the middle portion of the core portion 210. Is connected, and is connected to the lower coupling bracket 130 at the lower end.

The lower coupling bracket 130 of the lower portion of the mine horn 100 is an insert 232 formed under the core portion 210 of the polymer linepost insulator 200 to be connected to the ground portion insert 232 of the linepost insulator. A screw groove 131 corresponding to the position is formed.

Here, the connecting bolt 231 is inserted into and fastened to the insert 232 of the polymer line post insulator 200 and the screw groove 131 of the lower coupling bracket 130 at the lower end of the inner mine horn.

In addition, the outer surface of the body portion 105 is surrounded by silicon 140 which is an insulating material.

The current-limiting element connection bracket 110 is installed on one side of the upper end of the body portion 105 to form a flashover path for line post insulator (LP) protection.

The current-limiting element 120 is formed at one side of the upper side of the current-limiting element connection bracket 110. The current-limiting element 120 is made of zinc oxide (ZnO) and has a non-linear voltage-current characteristic.

In the present invention, as shown in FIG. 2, the current-limiting element 120 having a non-linear voltage-current characteristic is connected in series with one side of the upper end of the current-limiting element connecting bracket 110 to the ground portion 233 of the line post insulator. By connecting, even if a lightning surge occurs due to flashover and the line post insulator 200 generates a lightning flashover, the current-limiting element 120 having the non-linear voltage-current characteristics is controlled and blocked in a short time.

And, as shown in Figure 5, the lightning horn 100 has an air gap 250 of 90 ~ 200mm is formed between one side of the upper end and the high-voltage wire crimped to the upper side of the core portion (210). .

Since the air gap 250 is formed between the lightning rod 100 and the high-voltage wire 242, even when the current-limiting element 120 of the lightning rod 100 is deteriorated, the air gap 250 is formed. It is possible to prevent the deterioration from spreading, and the ground fault does not occur.

Next, the components of the polymer line post insulator 200 incorporating the inner horn 100 will be described.

The polymer line post insulator 200 according to the present invention is used to electrically insulate the high voltage wires, the high voltage wires and the steel tower, the transmission, the distribution facility, and at the same time maintain or support the gap of the high voltage wires mechanically. As a result, a plurality of wrinkles are formed on the outer surface to increase the electrical insulation properties, and thus the surface leakage distance is increased.

The polymer line post insulator 200 is composed of a core part 210, a housing 220, an insert 232 for fastening the lower coupling bracket, and an upper bracket 240.

As shown in FIG. 5, the polymer line post insulator 200 according to the present invention includes a housing 220 made of a polymer shell 220a and a polymer wing 220b, and an insert 231 made of a nut at a lower end thereof. The upper bracket 240 is molded at the same time with the epoxy resin 260, and the coupling groove 241 is formed at the same time with the epoxy resin 260 so that the high-voltage wire 242 is placed on the core 210.

The core part 210 is formed to have a long shape in a tower shape, the width of which becomes narrower from the lower end to the upper end, and the torpedo horn 100 having a cylindrical multilayer structure is inserted from the inner lower end of the core part 210 to the stop part. It is composed.

An insert made of a nut is fixed to the lower end of the core part 210 by being coupled to the lower coupling bracket 130 of the torpedo horn, and is surrounded by a polymer sheath 220a made of an epoxy resin 260 which is an insulating material around the outer surface. .

The housing 220 is injection-molded to form a polymer shell 220a and a polymer wing 220b around the outer surface of the core part 210, and a coupling groove 241 is formed on the upper side thereof so that the high voltage wire 242 is placed. The epoxy resin 260 is formed at the same time.

The polymer shell 220a is formed to surround the outer surface of the core portion 110, and the polymer wing 220b is formed in a circle around the core portion 110 integrally with the polymer shell 220a. Is formed and forms a predetermined interval in the longitudinal direction of the core portion (110).

The material of the polymer shell 220a and the polymer blade 220b is an epoxy resin 260 for outdoor use.

Epoxy resin is a material that can be used for outdoor use. It is a high-quality polymer insulating material with hydrophobicity with specific gravity of 1.6 ~ 2.0. Even after 96 hours at -30 ± 3 ℃, the appearance crack or electrical insulation performance does not change. It has excellent cold resistance, flame resistance of FV0, weather resistance without crack after 0.1 hours of UV B Lamp 1,000 hours, etc., and has excellent physical properties such as tensile strength 850㎏ / ㎠, compressive strength 1,400 ~ 1,700㎏ / ㎠, flexural strength 900 ~ Mechanical properties such as 1,200㎏ / ㎠, impact strength 4 ~ 8㎏㎝ / ㎠ also have excellent properties, there is no generation of volatiles and shrinkage of the volume during curing, and has a large adhesion to the material surface when curing. It is flammable and chemical-resistant, and has the favorable characteristic which can be colored arbitrarily by adding a pigment.

The lower coupling bracket fastening insert 232 is formed to be bolted to the screw groove 131 formed at the lower portion of the lower coupling bracket 100 to accommodate the lightning rod 100 embedded in the core portion 210. The lower part is combined with the transmission and distribution facilities.

In addition, the upper upper bracket 240 is formed of aluminum or copper alloy, and the coupling groove 241 is formed on the upper portion of the high voltage wire 242.

Next, a description will be given of the components incorporating the inner horn 100 in the polymer line post insulator (200).

After the core portion 210 of the polymer line post insulator 200 is washed cleanly, 0.5g to 3.5g of silicone grease is applied thereto, and then the lightning rod 100 is inserted.

The connecting bolt 231 is inserted and fastened to the side where the insert 232 of the line post insulator core part 210 and the lower coupling bracket 130 and the screw groove 131 of the lower end of the inner mine horn are connected.

As the interior of the core portion 210 is inserted into the lower end of the core portion 210 is inserted into the interior, the shape of the exterior is neat, and the structure does not penetrate moisture and moisture therein, between the high-voltage wire, high-voltage wire and pole, Electrical transmission and other facilities such as steel towers are electrically insulated from each other and mechanically maintain or support high voltage cables.

As described above, in the present invention, since the arc can be blocked even when the lightning horn is operated, there is no disconnection or insulator damage, and it is possible to prevent contact accidents caused by birds and other non-insulating objects, and is easy to install and repair. Therefore, the replacement cost and installation cost are saved, and the durability is good, so it can be used for a long time.

Claims (4)

A core 220 formed in the shape of a tower extending from the lower end to the upper end, and a housing 220 in which the polymer shell 220a and the polymer wing 220b are formed around the outer surface of the core part 210; The insert 232 made of a nut at the lower end of the core part 210 is molded at the same time with an epoxy resin 260, is molded up to the upper bracket 240 at the upper end, and the high-voltage wire on the upper side of the core part 210. In the polymer line post insulator 200 in which the coupling groove 241 is formed so that the 242 is placed, The polymer line post insulator 200 has a cylindrical multilayer structure from the lower end to the middle portion of the core part 210, and includes a torpedo horn 100 that forms a flashover path for line post insulator (LP) protection. , Insertion bolt 231 of the lower coupling bracket 130 and the lower portion of the core portion 210 of the lower end of the inner mine horn 100, the connection bolt 231 is characterized in that the built-in bolster horn insertion type polymer line post Insulator. The current-limiting element connecting bracket 110 of claim 1, wherein the lightning horn 100 is fixed at one side of the upper end to form a flashover path for preventing line breakage of the line insulator (LP) and preventing wire breakage or damage of the wire coating near the support point. The built-in polymer line post insulator, characterized in that the formed). The current-limiting element connection bracket 110 has a current-limiting element 120 having a non-linear voltage-current characteristic on one side thereof, and is connected in series with the current-limiting element 120 to form a line post insulator. A built-in injection line polymer line post insulator, characterized in that formed on the ground side insert (231). According to claim 1, the inner horn 100 is an air gap of 90 ~ 200mm between one side of the upper current-limiting element connection bracket 110 and the upper bracket 240 formed on the core portion 210 ( A built-in polymer line post insulator, characterized in that 250 is formed.

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