KR101810407B1 - Fixing structure of metal fittings for insulator - Google Patents

Abstract

The present invention relates to an upper metal fitting mounting structure with a loosening-prevention and surge voltage grounding inducement structure for an insulator. A technical characteristic of the present invention is to provide a stopper protrusion extended in one direction from one side of a coupling plate of an upper metal fitting (such as a bushing terminal, a terminal clamp, a bus bar shaped terminal plate, etc.) coupled to an upper connection side of an insulator (such as a high voltage busing, a low voltage busing, etc.) installed on a pole transformer. The stopper protrusion has a screw hole formed on a surface to prevent the upper metal fitting from being released and rotated in a radial direction in a connection part assembled with the insulator when a fixation bolt is inserted while corresponding to a fitting groove formed in the insulator. As such, position setting adjustment property and workability in accordance with connection of a wire are largely enhanced, and strong fixation force is ensured upon impact due to a storm or external force after connection; thereby remarkably reducing a risk about an accident, such as a fire, etc., due to wire connection or cutting. Moreover, the upper metal fitting of the present invention allows the stopper protrusion protruding while being extended from the coupling plate at a predetermined length to guide a surge voltage to a cap or wing part of the insulator while preventing an internal shock (bursting, breakage) of the insulator upon generation of the surge voltage which is a high voltage.

Description

[0001] The present invention relates to a fixing structure for an insulator having an inductive loosening preventing and surge voltage grounding induction structure.

(Cap type, bushing terminal, terminal clamp, bus bar type terminal block, etc.) coupled to the upper connection side of an insulation insulator (primary high-pressure bushing or secondary low-pressure bushing etc.) provided on a pillar transformer, The stopper protrusion is formed with a screw hole on the surface thereof so as to correspond to the recess formed in the insulating insulator, and when the fixing bolt is inserted, the upper metal fitting is connected to the insulator in the circumferential direction And it is possible to improve the position setting and workability according to the connection of the wire and to secure a firm fixing force even in case of impact due to strong wind or external force and to prevent safety accident such as fire due to wire connection or breakage And a surge voltage grounding (Gronding) induction structure, characterized in that the risk of Love Edition relates to an upper mounting bracket structure.

Therefore, the upper metal fitting of the present invention can prevent the internal impact of the insulation insulator (breakage and breakage prevention) when the surge voltage (flash lamp, lightning stroke, etc.) Or a surge voltage is induced in the insulator wing portion.

In general, the pillar transformer 100 is installed to lower the high voltage transmitted from the substation to a low voltage for industrial use or household use.

9, the conventional punching transformer 100 is installed on the electric pole 150 at a position somewhat distant from a building such as a residential house.

That is, when the pillar transformer 100 is installed at a predetermined position of the electric pole 150, a cut-out switch 160 is installed above the pillar transformer 100. The cut-out switch 160 is connected to the pillar transformer 100 The bipolar transformer 100 is connected to the primary side high-voltage bushing 130 of the transformer 100 by a cable 170, and is protected from overvoltage and fault current.

The cut-off switch 160 is connected to the primary side high-voltage bushing 130 of the pillar transformer 100 so that when the overload or the fault current is applied, It is formed to protect the transformer from accidents such as a low-side bushing short-circuit on the car side.

On the other hand, as shown in Fig. 10, the structure of a conventional pillar-form transformer may show a difference depending on the capacity and voltage, but it necessarily includes a winding wire and an iron core for performing the function of the transformer in common, This insulation oil is insulated by windings to prevent moisture and dust from penetrating into the insulation enclosure (110: tank) and prevents the insulation strength from dropping, And radiation to radiate heat.

In addition, a lid 120 for sealing the tank is formed on the upper side of the enclosure 110. The lid 120 is installed on one side of the lid so as to penetrate the inside and the outside of the lid. In order to increase the insulation resistance, A large high-voltage bushing 130 (or a "primary bushing") is installed on the side of the enclosure 110. In order to draw out the transformed low-voltage power to the outside, Pressure bushing 140 (or "secondary bushing") installed on the outer wall of the casing 110 is installed.

Accordingly, the high-pressure bushing 130 is not only electrically insulated but also has a bearing capacity sufficient to support the wire, and is provided with a flat ring- And is formed so as to be able to insulate the high voltage.

The high pressure bushing 130 is mainly made of a porcelain insulator having excellent heat resistance and corrosion resistance in order to prevent deterioration of the dielectric strength when salt or dust is adhered thereto. Polymer rubber or polymer materials such as EPDM (ethylene propylene rubber), XLPE, epoxy, and silicone rubber are used as the material of the high-pressure bushing 130 according to the present invention.

11, the conventional high-voltage bushing 130 includes an insulator 131 which is installed in a pillar-shaped transformer and has a hollow portion 132 formed therein, and an insulator 131 which is electrically connected to the pillar- And a screw shaft 134 at the upper end thereof is screwed to the screw shaft 134 of the connector 133 and extends to the upper portion of the insulator 131 and has a connection terminal 136 And a terminal clamp 135 in the form of a cap that is connected to the cable 170.

At this time, the connector 133 electrically connects the enclosing pipe 137 (or the bare wire) inside the transformer with the connection terminal 136.

The connector 133 is a rod-like conductor having a flange portion at a central portion thereof. The upper side of the connector 133 is connected to the connection terminal 136 of the terminal clamp 135 with respect to the flange of the connector 133, And the lower side is joined by soldering, pressing or bolt assembly, welding, or the like.

The connection terminal 136 is integrally formed with a cap-shaped terminal clamp 135 which is screwed to the screw shaft 134 and covers the upper end of the insulator 131.

When the conventional high-voltage bushing 130 is coupled to the pillar-shaped transformer, the insulating oil filled in the pillar-shaped transformer 100 flows into the hollow portion 132 of the insulator 131 and flows into the pillar 137 and the connector 133 Shaped packages 138 and 139 are formed on the upper surface of the flange portion of the connector 133 and between the terminal clamp 135 and the upper end surface of the insulator 131 so as to hermetically couple the connector 133. [ Respectively.

The packing 138 prevents the insulating oil introduced into the insulator 131 from leaking to the through hole of the insulator 131 together with the terminal clamp 135 and prevents damage to the insulator 131 .

12, the conventional low-pressure bushing 140 is composed of an inner mantle 11 and an outer mantle 12 of a solid soft material disposed inside / outside the enclosure 1 as shown in FIG. 12, A clamp terminal 13 is formed on the outer surface of the clamp terminal 12 and a clamp bolt 14 is formed on the side surface of the clamp terminal 13 so as to connect and tighten conductors such as electric wires.

At this time, the center conductor 15 is integrally formed with the clamp terminal 13 and extends from the outer apex 12 to extend through the center of the inner apex 11.

The inner packing 16 and the outer packing 17 are formed on the inner and outer surfaces of the through hole 1a of the enclosure 1 to prevent leakage of the insulating oil filled in the enclosure 1, And is formed to prevent breakage of the inner / outer shells 11 and 12.

At this time, a tightening member 18 of a washer and a nut is formed on the lower side of the center conductor 15 so as to firmly fix the pipe and the packing while providing tightening force by tightening.

However, in such conventional high-pressure bushing and low-pressure bushing, an upper end fitting such as a terminal block clamp provided on the upper side of the insulator (insulator of a metal or a resin material) is installed and then rotated, slipped or flowed in the circumferential direction A phenomenon may occur and the workability of the operator may be lowered during the installation work.

In addition, the loosening phenomenon (or rotational flow phenomenon) of the upper bracket causes difficulty in firmly fixing the wire at a fixed position, which causes the wire to flow, which causes short-circuit or breakage of the wire or short- Which eventually causes fire and safety accidents.

1. Registered Utility Model No. 0282453 (Registered on July 19, 2002) 2. Korean Registered Patent Publication No. 0632247 (issued October 9, 2006) 3. Korean Patent Registration No. 0951473 (issued on April 7, 2010) 4. Korean Registered Patent No. 1118968 (issued on February 28, 2012) 5. Registration of Utility Model No. 0460375 in the Republic of Korea (Bulletin of May 21, 2012) 6. Registered Utility Model No. 0462698 of the Republic of Korea (Notice of September 24, 2012)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a bipolar transformer in which an upper insulator (a bushing terminal, a terminal clamp, And a stopper protrusion extending in one direction is formed on one side of the coupling plate of the bus bar type terminal block and the like, wherein the stopper protrusion is formed with a screw hole on the surface thereof so that when the fixing bolt is inserted, The upper bracket is prevented from rotating in the circumferential direction in the assembled connection portion. This makes it possible to adjust the positioning and workability according to the connection of the wire and to secure a firm fixing force even in case of impact due to post- It is possible to significantly reduce the risk of a safety accident such as a fire or the like caused by connection or breakage. have.

In addition, the present invention provides a stopper protrusion protruding from a coupling plate of an upper metal fitting at a predetermined interval to prevent the internal impact of the insulation insulator (breakage and breakage prevention) when generating high-voltage electricity And to induce a surge as a part of the surge.

In order to achieve the above object, the present invention provides a pillar transformer to insulate and support the electric wire, and has a multi-stage circular insulator or insulator 110 formed on the outer circumferential surface thereof, And one or more grooves 111 are formed on the surface of the uppermost layer insulator or insulator 110 adjacent to the connecting portion 120 in the circumferential direction with respect to the axis (100: primary high-pressure bushing or secondary low-pressure bushing etc.); A connector 210 is formed on the upper side to be connected to the connection portion 120 of the insulator insulator so as to be electrically connected to the barrel 10 (such as a cable, a stud or the like), a coupling plate 220 is formed below the connector, The stopper protrusion 230 is formed on one side of the outer circumferential surface of the coupling plate 220. The stopper protrusion 230 is formed with a screw hole 231 on the surface thereof to fix any one or more than one The fixing bolt 240 is inserted through the screw hole 231 so as to be inserted therethrough so as to prevent the circumferential loosening of the insulator 100 against the central axis and to form a surge voltage derivative, Terminal clamps, bus bars, etc.); .

The insulation insulator 100 may be formed of a ceramic material such that the insides 111 are formed on the upper surface of the upper insulator or insulator 110 before curing (drying) The concave groove 111 in the concave portion 111 is formed so as to have a planar reference circle, a square shape or an elliptical shape with respect to the curved upper surface R,

At this time, the claws 111 are formed on the bottom surface P so that the cushioning material 140 is seated to prevent cracks or breakage of the hyperbolic temporary catches 111 of the fixing bolts 240.

As described above, according to the present invention, the one end of the coupling plate of the upper metal fitting (bushing terminal, terminal clamp, bus bar type terminal block, etc.) coupled to the upper connecting side of the insulator (high pressure bushing or low pressure bushing etc.) The stopper protrusion is formed with a screw hole on the surface thereof to correspond to the recess formed in the insulating insulator, and when the fixing bolt is inserted, the upper metal fitting is loosened in the circumferential direction in the connection part assembled with the insulator, This is because the position adjustment and workability are improved by adjusting the position of the wire and the fixing force is secured even after impact by strong wind or external force so that there is a risk of safety accidents such as fire due to wire connection, .

In addition, the upper metal fitting of the present invention can prevent the internal impact of the insulation insulator (breakage and breakage) while generating a surge voltage (flash, lightning, etc.) Or the surge voltage is induced by the insulator wing portion.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a high pressure bushing insulator according to the present invention; FIG.
3 is an example of a cap type eye bolt type upper bracket according to the present invention,
FIG. 4 is an illustration showing an upper elliptical wing of a high-pressure bushing insulator according to the present invention or an elliptical shape formed by a side-by-side scraping knife with respect to a curved upper surface of an insulator,
FIG. 5 is an illustration showing that the insulator according to the present invention is covered with silicone rubber, and the thickness of the insulator or insulator is thinner,
6 to 7 are views showing an example in which the upper metal fitting according to the present invention is in the form of a bus bar,
8 is an exemplary view showing various embodiments of the cushioning material according to the present invention,
Figs. 9 to 12 are detailed views showing application examples of a conventional pillar transformer and insulator.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings.

First, as shown in FIGS. 1 to 7, the present invention is largely composed of an insulating insulator 100 and an upper metal fitting 200.

The insulation insulator 100 is a collective term referring to a primary high-voltage bushing or a secondary low-pressure bushing, and is formed in a pillar-type transformer to support insulation and electric wires.

At this time, an insulator or insulator 110 having a multi-stage circular structure is formed on the outer circumferential surface of the insulator 100, a connecting portion 120 is formed on the upper side, and a through hole 130 is formed in the insulator 100.

At least one slot 111 is formed in the circumferential direction with respect to the axis on the uppermost layer of the insulator or insulator 110 from the connection part 120. At this time, the fitting groove is formed by one or more selected numbers according to the setting, and the logo is formed.

3, the upper bracket 200 of the present invention refers to a bushing terminal, a terminal clamp, a bus bar, and the like, although it is a cap type eye bolt as shown in FIG. A connector 210 is formed on the upper side so as to be electrically connected to the barrel 10 (such as a cable, a stud or the like), and a coupling plate 220 is formed below the connector.

The stopper protrusion 230 is formed on one side of the outer circumferential surface of the coupling plate 220. The stopper protrusion 230 is formed with a screw hole 231 on one side of the coupling plate 220, The fixing bolt 240 is inserted through the screw hole 231 and inserted into the through hole 231 to prevent circumferential loosening and surge voltage derivatives with respect to the center axis of the insulator 100. [

That is, the stopper protrusion 230 has a rib shape (cantilever arm shape) protruding from the coupling plate 220 formed like a disk, and a screw hole is formed on the surface so that the screw portion of the fixing bolt can pass through.

The insulating insulator 100 may be formed of a ceramic material so that the recess 111 is formed on the upper surface of the upper insulator or insulator 110 before curing (drying) The concave groove 111 in the concave portion 111 is formed so as to have a planar reference circle, a square shape or an elliptical shape with respect to the curved upper surface R,

1 and 2, when the insulator including the insulator or the insulator is molded, the insulator 11 is hardened and hardened, It is preferable that the shape viewed in a planar form is a circular shape or an elliptical shape as shown in Fig. 4, which is formed by a sculpted knife on the side of the curved upper surface of the insulator wedge or insulator.

5, when the insulating insulator 100 is made of a resin material such as a silicon rubber type, the top insulator or the insulator 110 may be formed with a fill- The surface 150 should be formed so as to be able to secure the fastening property with the insulator or insulator 110 made of a resin material having a thin cross-sectional shape but not piercing the hole.

As shown in FIG. 5, the metal nails 151 are inserted into the lifting support surface 150 so as to be integrally combined with each other, so as to be firmly fixed while corresponding to the threads of the fixing bolts.

The upper bracket 200 may be formed as a cap type as shown in FIGS. 1 to 5, or may be provided as a bus bar as shown in FIGS.

At this time, the stopper protrusion 230 is formed on one side of the coupling plate 220 on one side of the upper metal fitting in the form of a bus bar, and a screw hole 231 is formed on the stopper protrusion surface, So as to prevent axial rotation during tightening.

In other words, the threaded portion of the fixing bolt penetrating through the screw hole is prevented from rotating in the circumferential direction about the central axis of the insulator when the lower end enters the recess, .

1, the cushioning material 140 is seated on the upper surface of the bottom surface P of the recess 111 to prevent cracks or breakage of the temporary interposition recess 111 of the securing bolt 240 do.

8, the cushioning material 140 may have a flat cross-sectional shape as shown in FIG. 8, or may be formed as a cylinder having an open upper side to increase compressibility, or may have a hemispherical shape, The ball shape or the overall shape is formed in the shape of a round egg so that the lower portion of the fixing bolt spreads in the width direction when pressed and is pressed tightly against the inner periphery of the groove when the area is expanded.

At this time, it is preferable that the outer diameter of the cushioning material is inserted in the form of interference fit with respect to the inner diameter of the catching groove so as to prevent the detachment.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

100 ... Insulator 110 ... Insect wing or insulator
111 ... insertion groove 120 ... connection portion
130 ... through hole 140 ... cushioning material
200 ... upper bracket
210 ... connector 220 ... engagement plate
230 ... stopper projection 231 ... screw
240 ... fixing bolt

Claims (3)

An upper metal mounting structure for an insulator, in which an upper metal fitting (200) is assembled to an insulating insulator (100)
The insulation insulator 100 is installed in the pillar transformer to insulate and support the electric wire. The insulation insulator 100 is provided with an insulator or insulator 110 having a multi-stage circular structure on the outer circumference, and a connection part 120 is formed on the upper side A plurality of through holes 130 are formed in the inner surface of the connecting portion 120 and at least one receiving groove 111 is formed along the circumferential direction with respect to the axis on the uppermost layer insulator or insulator 110 surface from the connecting portion 120, The upper metal part 200 is attached to the connection part 120 of the insulation insulator so that the connector 210 is formed on the upper side so as to be electrically connected to the barrel 10. A connector plate 220 is formed on the lower part of the connector, The stopper protrusion 230 is formed on one side of the outer circumferential surface of the coupling plate 220. The stopper protrusion 230 is formed with a screw hole 231 on the surface thereof to fix any one or more than one The fixing bolt 240 is inserted in the It is formed to the circumferential direction and a release preventing surge voltage derivative with respect to the center axis of the ball 231 back through the insulators 100 as inserted via,
The insulating insulator 100 may be made of a ceramic material so that the upper surface of the uppermost insulator or insulator 110 is formed with the grooves 111 before curing (drying) The groove 111 is formed to have a plane reference circular shape, a square shape or an elliptical shape and has a sectional horizontal reference surface P secured to the curved upper surface R. The groove 111 has a bottom surface P, The stopper protrusion 230 is formed to prevent the temporary fastener 210 of the fastening bolt 240 from cracking or cracking due to the cushioning material 140 being mounted on the upper surface thereof. And a cantilever arm protruding at a predetermined interval from the outer circumferential surface of the upper bracket.
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