KR200410928Y1 - polymer line post insulator - Google Patents

Abstract

The present invention relates to a line post insulator that supports and insulates a high-voltage wire of a transmission and distribution facility, the core part being formed of a FRP and long in a rod shape; The core 200 is inserted into a predetermined injection mold to inject a polymer to inject a polymer so that the polymer shell 210 and the polymer shade 220 are formed around the outer surface of the core part 100. and; The lower joining tool 310 formed by a casting machine and press-bonded to the lower part of the core part 100, the coupling screw thread 311 is formed to be coupled to the transmission and distribution facilities, and formed by the forging of aluminum and the core A polymer line post insulator, comprising: a coupling bracket 300 formed of an upper coupling bracket 320 in which a coupling groove 321 is formed so as to be crimped and coupled to an upper portion of the part 100. It is a technical point. Accordingly, the housing formed on the outer circumferential surface of the core part is formed of a polymer, and thus the line post insulator is lighter, which is easy to process, transport, and install, and the durability is excellent, and the replacement cost is reduced, and the shape of the polymer housing formed on the outer circumferential surface of the core part is Clean, the coupling bracket is not formed of a polymer shell to reduce the waste of the polymer while saving the manufacturing time and cost, there is an advantage that has excellent durability.

 Polymer Line Post Insulator Coupling Insulation

Description

Polymer line post insulator

1-a side view of a polymer linepost insulator according to the present invention.

2-a cross-sectional view of a polymer linepost insulator according to the present invention.

<Description of Major Symbols Used in Drawings>

100: core 200: housing

210: polymer jacket 220: polymer shade

300: binding bracket 310: lower coupling bracket

311: coupling thread 320: upper coupling bracket

321: coupling groove

The present invention relates to a line post insulator that supports and insulates high-voltage cables of transmission and distribution facilities. In particular, a polymer is used as the core of the core part, and the coupling bracket itself has no outer shell, and thus has excellent electrical insulation and mechanical properties. The invention relates to a polymer linepost insulator that is easy to manufacture and durable.

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.

In particular, the line post insulator generally has a core portion formed at its center, and a plurality of corrugations having a diameter of a predetermined width formed of a magnetic material are formed on the outer circumferential surface of the core portion, and a coupling bracket is formed above and below.

The coupling bracket is formed of an upper coupling bracket and a lower coupling bracket. The upper coupling bracket is generally formed of a magnetic material integrally with a wrinkle formed on the outer circumferential surface of the core part, and a coupling groove for supporting and fixing a high voltage wire in the center thereof. Is formed. And the lower coupling bracket is formed of a metal and combined with various transmission and distribution facilities, the coupling nut is formed for easy coupling.

The magnetic material insulator has a large surface energy and has a water immersion characteristic. When water contributes appropriately to the surface of an insulated state, leakage current increases and partial discharge occurs.

As a result, when heat is repeatedly generated, the difference in thermal expansion coefficient between joint materials such as metal fittings, cement, magnetic parts, etc. increases, resulting in interfacial desorption, and electric fields are concentrated in the area, which leads to accelerated insulation degradation and breakdown.

In addition, these magnetic materials are very heavy, difficult to process and transport, install, repair, manufacturing difficulties, increased production costs, as well as the increase in accidents due to the large density of coastal industrial complex and downtown.

This problem will become more serious as it becomes a highly industrial society and a highly information society.

In order to solve this problem, recently, a polymer is used instead of a magnetic material, and according to Korean Patent Application Publication No. 2003-0038781, a cylindrical fiber-reinforced plastic material forms an FRP core, and the cylindrical The upper fastener is formed to be crimped to the upper and lower parts of the FRP core, and the upper support hole having the wire groove and the insertion part at the upper part and the lower support hole having the insertion part at the upper part and the bolt fastening part at the lower part are formed. The outer periphery of the upper and lower limbs is injection molded of a polymer insulating housing through a mold.

That is, the prior art press-fits the upper and lower support spheres to a cylindrical FRP core, and forms an insulating housing integrally with the core and the upper and lower support spheres.

However, the conventional technology is difficult to manufacture the mold because the shape of the mold must be formed up to the upper and lower support sphere during injection molding, and forming the polymer on the upper and lower support sphere does not affect the electrical or mechanical properties at all. Rather, it is a disadvantage that wastes polymer and takes a long time to manufacture.

In addition, since the injection molding of the polymer is made in the state where the upper and lower limbs are fastened to the core in advance, the surface may not be injection molded smoothly or the polymer may be in close contact with the cores and the upper and lower limbs and may not be injection molded. If rainwater leaks into the place, there is a risk of insulator damage caused by high-pressure discharge.

In addition, the wire groove formed in the upper support sphere is generally coupled to the high-voltage wire, the strong rain is a high-voltage wire violently shakes the polymer, which causes the rainwater to penetrate the damaged area, the insulator by the lightning strike There is a problem.

In addition, as a prior art, there is a line post insulator used in the existing KEPCO, which is formed in the upper coupling bracket vertical and horizontal coupling sphere for coupling with the high-voltage wire.

However, this is not necessary at all in actual use in the field, but rather has a problem of extending the installation time, increasing the manufacturing cost of insulators.

The present invention has been made to solve the above problems, the outer shell is formed of a polymer having not only excellent electrical insulation and mechanical properties, but also shorten the manufacturing cost and time, saves installation time and costs, and has excellent durability The purpose is to provide a polymer line post insulator.

The present invention for achieving the object as described above, the core portion is formed of FRP, long formed in a rod shape; A housing in which the core part is inserted into a predetermined injection mold to inject a polymer and injection molded to form a polymer shell and a polymer shade around the outer surface of the core part; A high pressure electric wire is formed by casting by a predetermined casting machine and press-bonded to the lower part of the core part, and a lower joining tool formed with a screw thread to be coupled to a transmission and distribution facility, and formed by aluminum forging molding and press-bonded to the upper part of the core part. It is a technical gist of the polymer line post insulator, characterized in that it comprises a; a coupling bracket consisting of an upper coupling bracket formed with a coupling groove.

Accordingly, the housing formed on the outer circumferential surface of the core part is formed of a polymer, and thus, the line post insulator is lighter, which is convenient to process, transport, and install, excellent in durability, and reduced replacement cost.

In addition, the shape of the polymer housing formed on the outer circumferential surface of the core part is neat, and since the polymer shell is not formed on the coupling bracket, the manufacturing time and cost are saved while reducing the waste of the polymer, and there is an advantage of having excellent durability.

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

The present invention as described above is largely composed of a core portion 100, the housing 200, the coupling bracket 300, the housing 200 is formed around the outer surface of the core portion 100, the core portion 100 The coupling bracket 300 is fixedly coupled to both ends, and the coupling bracket 300 is coupled to a high voltage wire and a transmission and distribution facility. Here, the transmission and distribution facility refers to a pole or steel tower or an iron frame installed thereto.

The core part 100 is formed of FRP (fiber glass reinforced plastic, glass fiber reinforced plastic), and is formed in a long rod shape in the longitudinal direction. Both ends of the core part 100 is fixed to the coupling bracket 300 to be described later, the outer surface is surrounded by a polymer jacket 210 to be described later as an insulating material.

The core part 100 is inserted into an injection mold formed to correspond to the shape of the polymer jacket 210 and the polymer shade 220 to be described later, and the polymer is injected into the injection mold. The polymer shell 210 and the polymer shade 220 are formed around the outer surface of the core part 100 by the injection molding process by the polymer.

The polymer sheath 210 is formed to surround the outer surface of the core part 100, and the polymer shade 220 is formed in a circle around the core part 100 integrally with the polymer sheath 210. Is formed and forms a predetermined interval in the longitudinal direction of the core portion (100). The polymer shade 220 may be formed in an alternating shade or the same shade according to the insulation capacity of the place where it is installed, it is also formed by adjusting the number.

The polymer, which is the material of the polymer jacket 210 and the polymer shade 220, generally uses silicone rubber or EPDM (Ethylencepropylene diene monomer). In particular, the silicone rubber of the polymer material has excellent insulation performance, heat resistance, light resistance, oxidation stability, Excellent weather resistance and low surface energy is excellent in water repellency, so that even in the presence of moisture or contaminants, it has inherent physical properties that limit leakage current. Therefore, the preferable housing 200, that is, the polymer shell 210 and the polymer shade 220 Can be used as a material.

And the coupling bracket 300 is formed on the lower side of the core portion 100, the lower coupling bracket 310 is coupled to the transmission and distribution facilities, and the upper coupling formed on the core portion 100 and coupled to the high-voltage wire It is made of a bracket (320).

The lower coupling bracket 310 is cast by a predetermined casting machine, and a groove is formed on the lower grain alloy sphere 310 to be coupled to the core part 100 to receive a lower end of the core part 100. The coupling screw thread 311 is formed in the lower portion to be coupled to the transmission and distribution facilities.

The upper upper coupling bracket 320 is formed by aluminum forging molding, and a groove is formed at the lower portion of the upper coupling bracket 320 to be coupled to the core part 100 to accommodate the upper end of the core part 100. The coupling groove 321 is formed at the top so that the high voltage wire is placed.

That is, the core part 100 is first manufactured, and then the core part 100 is inserted into the injection mold to inject the polymer shell 210 and the polymer shade 220 first, and then the lower coupling bracket. The 310 and the upper coupling bracket 320 is fastened to the core part 100, and then the fastening portion is compressed to fix the core part 100 to the core part 100.

Therefore, the shape of the polymer housing 200 formed on the outer circumferential surface of the core part 100 is neat, and the polymer fitting 210 is not formed in the coupling bracket 300, thereby reducing the waste of the polymer and saving manufacturing time and cost. In addition, it has excellent durability, and electrically insulates each other between high voltage cables, high voltage cables and electric transmission and distribution facilities such as poles and steel towers, and mechanically maintains or supports gaps of high voltage cables.

The present invention by the above configuration, the housing formed on the outer peripheral surface of the core portion is formed of a polymer, the line post insulator is lighter, the processing and transportation, installation is easy and excellent durability, and there is an effect that the replacement cost is reduced.

In addition, the shape of the polymer housing formed on the outer circumferential surface of the core part is clean, and the polymer fitting is not formed in the joining bracket, thereby reducing the waste of the polymer, thereby saving manufacturing time and cost, and having excellent durability.

Claims (1)

A core part 100 formed of FRP and formed to have a rod shape; The core 200 is inserted into a predetermined injection mold to inject a polymer to inject a polymer so that the polymer shell 210 and the polymer shade 220 are formed around the outer surface of the core part 100. and; The lower joining tool 310 formed by a casting machine and press-bonded to the lower part of the core part 100, the coupling screw thread 311 is formed to be coupled to the transmission and distribution facilities, and formed by the forging of aluminum and the core A polymer line post insulator, comprising: a coupling bracket (300) formed of an upper coupling bracket (320) having a coupling groove (321) formed thereon so as to be crimped and coupled to an upper portion of the portion (100).

Images