KR200406056Y1 - Polymer line post insulator with forming structure as a single body - Google Patents

Abstract

The present invention relates to a polymer insulator, and in particular, by eliminating the bonding process of the upper fixing means (upper fixing tool), a reduction in manufacturing cost and an increase in insulation function are provided, and an integrally molded body structure provided for ease of handling due to weight reduction of the product. It is an object to provide a polymer line post insulator having a.

Polymer line post insulator having an integrally molded body structure of the present invention for achieving the above object,

The upper fixing fixture 300 is formed by insert molding at one part of the FRP material mandrel 100, and the base fitting 400 is pressed and assembled to the other side of the mandrel 100, and then the ground end of the lower base fitting is assembled. Bonding process of the core and the upper fixing by integrally molding the insulating housing 200 having the different shades (sheaths) to extend the insulation length by surrounding the entire outside of the base bracket, the mandrel and the upper fixture except the side 410 By shortening the binding process, and the sealing of the exposed junction of each component is completely sealed by the insulating housing is characterized by maximizing the service life by reducing the manufacturing cost and maximizing the insulation performance.

Insert Molding, Upper Fixture, Mandrel, Bonding Process, Insulation Housing

Description

POLYMER LINE POST INSULATOR WITH FORMING STRUCTURE AS A SINGLE BODY}

1 and 2 are cross-sectional views of the polymer line post insulator of the applicant's source technology.

3 is a perspective view of a preferred embodiment of the present invention.

4 is a cross-sectional view of the present invention.

5 is a plan cross-sectional view of the present invention.

Figure 6 is a perspective view of the coupling state of the upper fixture and the mandrel and the base bracket before forming the insulating housing as a component of the subject innovation.

Figure 7 is a cross-sectional view shown separately for a detailed description of the components of the present invention.

8 to 10 is a step of the manufacturing process of the present invention.

11 and 12 are cross-sectional views showing another embodiment of the present invention.

Figure 13 is a use embodiment of the present invention.

** Explanation of symbols for main parts of drawings **

100: mandrel 200: insulated housing

210: polymer insulator 220, 230: lampshade

220a, 230a: inclined shade 220b, 230b: spiral shade

300: upper fastener 310: through the processing line

330: binding protrusion 400: base bracket

The present invention relates to a polymer insulator, and in particular, by eliminating the bonding process of the upper fixing means (upper fixing tool), a reduction in manufacturing cost and an increase in insulation function are provided, and an integrally molded body structure provided for ease of handling due to weight reduction of the product. It relates to a polymer line post insulator with.

Recently, in order to reduce the size and weight of electric power facilities and improve convenience of maintenance, existing magnetic material insulators are gradually being converted into polymer insulators.

Among them, polymer insulators have emerged as insulators (suspend insulators, long insulators, and support insulators) used in many power facilities.

In particular, suspension insulators, long insulators, and support insulators in which insulating housings are formed from polymer materials are well known as representative insulators for power distribution and transmission lines.

The polymer insulator is a core rod made of glass fiber reinforced plastic (FRP), which is a core material, and a polymer insulator coated with a material resistant to air pollution and ultraviolet rays on the outer circumferential surface of the core rod to impart mechanical stress. It is well known that it consists of a shed insulation housing which is integrally protruded into the insulation part and increases the leakage distance and flashover distance, and the upper fixture and the base bracket which are assembled by crimping by dies at both ends of the mandrel. have.

The production of such polymer insulator is carried out by inserting the FRP mandrel with adhesive on the surface into a heated mold and pushing the polymer rubber compound into the mold at high pressure to form an insulating housing on the surface of the mandrel. The mold is taken out (deformed), and the upper fixing tool and the base fitting are inserted at both ends of the core rod, and the bracket is crimped and fixed at a predetermined pressure by a die. Then, the joints (exposure joints) of the respective brackets and the insulating housing are treated with a sealing agent to produce a finished product.

However, these conventional polymer insulators have various disadvantages.

First, the conventional polymer insulator is pressed and fixed between the upper fixture and the base bracket between the insulating housing and the ends of the mandrel, and must be treated with a sealing agent to seal the exposed joint, which is a binding part of the upper fixture and the base bracket. Insulation breakdown is prevented due to moisture infiltration, and manufacturing cost increases due to complexity of the manufacturing process.

Second, the conventional polymer insulator has a disadvantage in that handling and installation work are inconvenient due to the increase in the overall volume and the increase in the length and weight of the product due to the complexity of the structure because the upper fixing tool, which is a fixing means of the processing line, is provided.

Third, the upper fixture is provided with a metal material has a disadvantage of poor insulation.

Thus, as shown in FIG. 1, the applicant has a FRP in the interior of the EPDM or silicon insulating housing 2 in which the shades (sheds) 2a and 2b having different lengths are formed on the outer surface as in the prior art. Combine the core rod (1) by insert molding, and the upper fixture (3) separately formed with an epoxy resin having excellent tracking and weather resistance in a state of covering the upper portion of the core rod (1) and the upper end of the insulating housing (2) to the adhesive Was previously registered in Utility Model Registration No. 315371 for the 'Polymer Line Post Insulator' in which the base bracket 4 was pressed and assembled under the core rod 1.

The applicant's pre-registration technology effectively improves the disadvantages of various types of polymer line post insulators, thereby providing a reduction in manufacturing cost as well as simplification of structure, weight reduction, and ease of handling. However, the insulating housing 2 Workability and manufacturing cost were not greatly reduced due to the work process of treating the exposed joint of the base bracket (4) with a sealing agent and the bonding process and hardening process according to the binding of the upper fixing tool (3) and the mandrel (1). .

Thus, the present applicant has shown that the base bracket 40 and the insulating housing (as shown in FIG. 2) to provide a shortening of the sealing agent treatment and effective insulating structure of the base bracket 4 and the core rod 1 of the above-described registration technique. 'Polymer line post' with a structure that is formed by insert molding on the outside of the base bracket 40 so as to seal the exposed joint with 20) so as to enclose the insulating portion of the insulating housing 20, thereby reinforcing the insulating length and increasing the sealing effect. 'Aja' was pre-registered as Utility Registration No. 356265.

However, the latter pre-registration technology also does not provide a solid sealing as well as a solid sealing of the upper fixture 30 and the insulating housing 20.

That is, in the applicant's pre-registration technology of FIGS. 1 and 2, the binding between the upper fixing spheres 3 and 30 and the core rods 1 and 10 of the epoxy material separately formed is bound by the bonding process by an adhesive, and the insulating housing ( Bonding process for bonding the upper fixtures 3 and 30 to the core rods 1 and 10 by providing a seal with a separate sealant on the exposed joints of the 2 and 20 and the upper fixtures 3 and 30. And after the bonding hardening process and the bonding is required a sealing process by the sealing agent of the bonding portion of the insulating housing (2, 20) and the upper fixing sphere (3, 30) has a disadvantage that it does not provide a great cost savings.

Furthermore, the sealing agent treated at the exposed junction between the upper fixtures 3 and 30 and the insulating housings 2 and 20 by the sealing agent causes deterioration and breakage due to temperature deviation and humidity caused by external weather caused by long term use. There was also a disadvantage that can not guarantee long-term insulation life.

In addition, the upper fasteners (3,30) is formed in the form of a reduction as a whole has a disadvantage of increasing the manufacturing cost because of the high consumption of materials.

The present invention was developed to effectively solve the problems of the prior art and the applicant's prior registration techniques as described above,

The present invention provides a polymer line post insulator with an integral molded body structure that eliminates insulation failure due to the tight sealing of the upper fixture and mandrel and the insulation housing and the perfect sealing of the upper fixture.

In addition, the present invention provides a polymer line post insulator having an integrally molded body structure which minimizes manufacturing cost and product defect rate by eliminating the bonding process by binding the upper fixing tool by insert molding to a core rod.

In addition, the present invention is to provide a polymer line post insulator having an integrally molded body structure that provides a further reduction in manufacturing costs by simplifying the work process because there is no need to seal the exposed junction of the upper fixture and the mandrel.

In addition, the present invention is a polymer line having an integral molded body structure that ensures long-term lifespan by eliminating the source of insulation fracture elements due to the perfect sealing structure by the insulating housing formed by enclosing the exposed junction between the upper fixture and the base bracket and the mandrel. In providing post insulators.

In addition, the present invention provides a polymer line post insulator having an integrally molded body structure that can reduce manufacturing costs by minimizing waste of materials by chamfering both sides of the upper fixing tool without being affected by the support of the processing line. Is in.

In addition, the present invention is a polymer line post insulator having an integrally formed body structure in which the upper fastener protrudes a plurality of binding protrusions on the outer circumferential surface and the chamfering surface, and is combined with an insulating housing and an insert to ensure solidity and ease of demolding of the upper fastener. In providing.

Polymer line post insulator having an integrally molded body structure of the present invention for achieving the above object,

The upper fastener is formed by insert molding on one part of the FRP material mandrel, and the base bracket is pressed and assembled on the other side of the mandrel, and then the entire outside of the base, the mandrel and the upper fastener except for the ground end of the lower base bracket. In order to extend the insulation length, the insulation housings having different lengths (sheds) are integrally molded to shorten the binding process by the bonding process of the mandrel and the upper fixing. It is characterized by maximizing the service life by reducing the manufacturing cost and maximizing the insulation performance by being completely sealed by the insulating housing.

Hereinafter, with reference to the accompanying drawings 3 to 7 for a preferred embodiment of the present invention will be described in detail.

That is, the polymer line post insulator of the present invention is assembled to both ends of the core rod 100 and the insulating housing 200 of the polymer material molded by surrounding the core rod 100 and the core rod 100 having a predetermined diameter as in the conventional configuration. And the upper fixing tool 300 of the resin material, which is a clamp means for supporting and fixing the processing line, and a metal base bracket 400 fixed to the electric pole.

More specifically, the insulating housing is composed of the FRP core rod 100 of the core material, the polymer insulation portion 210 formed on the outer circumferential surface of the core rod, and the shades 220 and 230 having different lengths formed integrally with the insulation portion. (200), and the resin material upper fixing tool 300 is formed on the upper portion of the core rod 100 and the base metal fitting 400 of the metal material is pressed and assembled to the lower,

The upper fixture 300 is formed by the insert molding to the core rod 100,

A single body is formed by integrally forming the insulating housing 100 by surrounding the entire exposed surface of the base bracket 400, the core rod 100, and the upper fixing tool 300 except for the ground end surface 410 of the base bracket 400. It consists of.

The mandrel 100 is made of a glass fiber reinforced plastic (FRP) material with excellent mechanical strength mentioned above, and use the one manufactured by the drawing method.

And the core rod 100, as shown in Figure 8, the binding portion 110 is a plurality of annular groove 120 is processed on the outer peripheral surface is inserted into the upper fixture 300 is formed.

The FRP core rod 100 thus processed is placed in a mold (not shown) to enclose the binding part 110 to form the upper fixture 300.

At this time, the upper fixture 300, as shown in Figure 5 and 6, the same as the applicant's pre-registered technology to form a hemispherical ring groove 320 on the upper end of the processing line passage groove 310 and its lower peripheral surface By molding, both sides are chamfered and molded for the purpose of minimizing material consumption, and each binding protrusion 330 is integrally formed on the outer circumferential surface and the chamfering molding surface on both sides.

The upper fixing tool 300 is formed in this way by the binding unit 110, that is, a plurality of annular grooves 120 of the mandrel 100 is provided with a solid bond with each other uneven coupling.

Therefore, as in the prior art, in the bonding of the upper fixture 300 and the core rod 100, the bonding process of the use of the adhesive and the curing process after the bonding is shortened.

In addition, the plurality of binding protrusions 330 protrudingly formed on the outer circumferential surface and the chamfering molding surface of the upper fixing tool 300 are solidly bonded to the insulating housing 200 formed on the outer circumference, as well as a mold during the molding process (not shown). Ease of demolding from the

The material of the upper fixture 300 is preferably a material resistant to ultraviolet light and easy to mold, and preferably an inexpensive epoxy resin.

The present invention, as shown in Figure 8, in the state of inserting the core rod 100 processed into the molding space of the mold (not shown), the upper fastener 300, the binding portion 110 and the insert of the core rod 100 After forming by bonding, as shown in Figure 9 to the other side of the core rod 100, the base bracket 400 is compressed and assembled as in the prior art.

In this way, assembling and pressing of the upper fixing tool 300 and the base bracket 400 on both sides of the mandrel 100, as shown in Figure 10, the ground of the base bracket 400 in the mold (not shown) again Extending the surface leakage distance of the insulating function and the polymer insulating portion 210 and the insulating function that covers the entire exposed surface of the base bracket 400, the core rod 100 and the upper fixture 300 except the end surface 410 is covered with a certain thickness In order to increase the flashover distance by the shape of the disks different lengths 220, 230 as a unitary structure to form an insulating housing 200 composed of alternating protrusion molding to produce a finished product.

At this time, the insulating housing 200 is formed by forming a long length of the shade 230 to the upper fixture 300 for a longer insulating length.

The polymer line post insulator of the present invention, as shown in the embodiment of Figure 11, the plurality of shades 220,230 integrally molded to the polymer insulating portion 210 to prevent the water is soaked on the surface due to rain, snow, etc. It is also possible to apply the structure formed by the inclined shades 220a, 230a integrally formed with a constant inclination (about 30 degrees) in one direction so that,

As in the embodiment of Figure 12, it is possible to apply a structure in which the spiral shades (220b, 230b) having different lengths integrally molded.

The sloped shades 220a and 230a and the spiral shades 220b and 230b having such slopes include salts accumulated on the surface of the shade to allow the drainage of water to flow well, or water containing foreign matter (dirty water) such as dust. By dripping well, the life and safety by the improvement of the electrical properties are ensured by minimizing the surface residual of water which has a big influence on the leakage current increase.

The present invention, as shown in FIG. 13, the screw groove 420 to the ground end surface 410 of the base bracket 400 in the same manner as the conventional method to the complete iron (PN) installed on the pole (EP) Fastening and fastening by using the bolt (B), mounting the processing line (OW) to the processing line passage groove 310 formed in the upper fixing sphere 300 and using a hemispherical ring groove 320 fastening means such as a binder (US) And the installation is completed.

This design consists of the concept of binding the upper fixture and the mandrel to the whole concept without bonding process, which reduces the manufacturing cost by shortening the work process, and the whole exposed surface of each component (except the ground end of the base bracket) By enclosing the insulation housing, the insulation function can be maximized without additional sealing treatment by the perfect sealing of the junction of the components, which can further reduce the manufacturing cost and maintain the insulation function even after long-term use. In addition to the guarantee of lifetime, the reliability of the product is also guaranteed.

Claims (6)

FRP mandrel of core material, polymer insulating part molded on outer circumferential surface of mandrel, insulating housing of different length formed integrally with this insulating part, and resin material upper fixture formed on upper part of the mandrel And including the base bracket of the metal material to be assembled to the lower portion, The upper fixture is formed by the insert molding on the mandrel, A polymer line post insulator having an integrally molded body structure formed by integrally molding the insulating housing by enclosing the entire exposed surface of the base bracket, the mandrel, and the upper fixture except the ground end surface of the base bracket. The method of claim 1, The mandrel and the upper fixture is a polymer line post insulator having an integrally formed body structure, characterized in that the concave-convex coupling by insert molding to the binding portion processing a plurality of annular grooves on the outer peripheral surface of the mandrel. The method according to claim 1 or 2, The upper fastener is a polymer line post insulator having an integrally molded body structure, characterized in that both sides are chamfered molded and the outer peripheral surface and the chamfered forming surface protruding a plurality of binding projections and inserts coupled to the insulating housing. The method according to claim 1 or 2, The insulating housing is a polymer line post insulator having a unitary body structure, characterized in that formed by forming a long length of the shade on the upper fixture for a longer insulating length. The method of claim 1, A plurality of shades integrally formed in the polymer insulation portion is a polymer line post insulator having an integrally formed body structure, characterized in that composed of a sloped shade formed integrally with a certain slope in one direction. The method of claim 1, The plurality of shades integrally formed in the polymer insulation portion is a polymer line post insulator having an integrally formed body structure, characterized in that consisting of a spiral shade formed integrally with a spiral having a different length.

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