KR100758197B1 - A spacer for connecting bus bar - Google Patents

Abstract

A spacer for connecting a bus bar is provided to maintain a structural stiffness by uniformly supporting a wide area of the bus bar and passing a bolt through a side surface. A spacer(110) for connecting a bus bar includes a front surface guide unit, a pair of side surface guide units, a groove(112), and a supporting guide unit. The front surface guide unit guides a front surface of the bus bar on one side surface or both surfaces of the spacer(110). The pair of side surface guide units guide both side surfaces of the bus bar. The groove(112) makes a part of a bolt inserted on both side surfaces of the spacer(110). The supporting guide unit is protruded with the same height as the front surface guide unit and the side surface guide unit on an edge of the groove(112).

Description

Spacer for busbar connection {A SPACER FOR CONNECTING BUS BAR}

1 is a perspective view showing a conventional busbar connection structure,

Figure 2 is a perspective view of a connecting device provided with a spacer of an embodiment of the present invention,

3 is a perspective view of the spacer shown in FIG.

4 is a perspective view of the use state of the spacer shown in FIG.

5 is a perspective view of the leaf spring shown in FIG.

FIG. 6 is a cross-sectional view of the state of use of the connection device shown in FIG. 2. FIG.

<Explanation of symbols for main parts of drawing>

100: busbar 110: spacer

112: groove 113: auxiliary guide portion

114: front guide portion 116: side guide portion

118: refractive portion 120: protective cover

122: through hole 130: leaf spring

132: bushing 134: guide portion

140: bolt 142: head

150: nuts

The present invention relates to a busbar connecting spacer, and more particularly, to a spacer used in a connecting device in which a wide area of the busbar is pressed to make the connection of the busbar uniformly and maintain structural strength.

In general, cables have been used a lot as a medium for transmitting electrical energy, but recently, bus bars have been used as a substitute for cables.

Bus bars are conductors like cables, but have the advantage of delivering large amounts of electrical energy.

Compared to the past, the current system of buildings requires an increasing amount of energy of various capacities. In line with this trend, rapid use is increasing with the recognition of the safety and low energy loss of busbars.

For example, busbars can be used in factories, buildings, apartments, large discount marts, officetels, research complexes, department stores, golf courses, tunnel semiconductors, LCD factories, chemicals, refineries, steelmaking, skyscrapers, ultra-high voltage substations, LNG transfer stations, new airports, ports It is supplied in various fields in various fields.

On the other hand, cables use vinyl or rubber to protect or insulate conductors. However, busbars are difficult to protect directly as insulators because high-voltage current flows. It is embedded in the duct (Steel Housing) to protect the busbar.

As a technique relating to such a busbar, a busbar and a busbar duct are disclosed in Utility Model Registration 20-0319529.

1 is a perspective view showing a connection structure of a fire resistant insulated bus bar.

In order to form a space for connecting the fire-insulated busbars 1a, 1b 1c 1d, 1e, 1f, 1g, 1h passing through the bus ducts 20, 30, the one side bus duct 20 has four Outer refractory insulated busbars 1a, 1b of the refractory insulated busbars 1a, 1b, 1c, and 1d are bent outwards, and the other side bus duct 30 includes four refractory insulated busbars 1e, Two refractory insulated busbars 1e and 1f of 1f, 1g and 1h are bent to the right, and the remaining two refractory insulated busbars 1g and 1h are bent to the left. Each of the busbars 1a, 1b 1c 1d, 1e, 1f, 1g, 1h is provided with insulating spacers 25, 26, 27 to prevent a short circuit therebetween, and bolts 24 cross the center. The groove 29 is formed so that it may be.

On the outside of the refractory insulated bus bars 1a, 1b 1c 1d of the one side bus duct 20, a pressure plate 21 is formed to closely contact the bus bars 1a, 1b 1c 1d, 1e, 1f, 1g, 1h. The disk washer 22, the presser 23, and the bolt 24 are provided outside the presser plate 21. The disc washer 22 is in direct contact with the pressure plate 21, and a bar-shaped pressure bar 23 is interposed between the disc washer 22 and the bolt 24.

The bolt 24 is coupled to both pressure plates 21 to generate tensile force. Bolts Bolts 24 maintain maintenance-free nuts 50 on both pressure plates 21 across grooves 29 in the center of fire-insulated busbars 1a, 1b 1c 1d, 1e, 1f, 1g, 1h. Are coupled through. A coupling plate 31 having a washer insertion groove 32 into which the disc washer 22 of the pressure plate 21 is inserted may be installed at an outer side of the other bus duct 30.

The connection part covers 40 and 41 are bolted to each bus duct 20 and 30 in order to block and protect a connection part from the exterior.

However, such a connection structure is a structure in which the coupling force is generated by pressing the bus bars 1a, 1b 1c 1d, 1e, 1f, 1g, 1h and the spacers 25, 26, 27 as the tensile force of the bolt 24.

Accordingly, there is a problem in that pressing force is generated only in a portion where the bolt 24 is limited, so that the busbars 1a, 1b 1c 1d, 1e, 1f, 1g, and 1h are not uniformly connected as a whole.

In addition, in the conventional connection structure, the grooves 29 must be formed in the bus bars 1a, 1b 1c 1d, 1e, 1f, 1g, and 1h and the spacers 25, 26 and 27 in order to pass the bolts 24. There was a problem of structural weakness.

The present invention has been made in order to solve the above problems, an object of the present invention is to pressurize a large area of the busbar structure of the busbar is made of a connection device that is made uniform overall and maintains the structural strength To provide a spacer having a.

The present invention for achieving the above object, in the spacer for insulating the busbar at the portion where a plurality of busbars are connected,

On one side or both sides, a front guide part for guiding the front side of the bus bar and a pair of side guide parts for guiding both sides of the bus bar are formed, and grooves for allowing a bolt to be partially inserted are formed at both sides. The edge of the groove provides a bus bar connecting spacer, characterized in that the auxiliary guide portion protrudes at the same height as the front guide portion and the side guide portion.

One end of the pair of side guide parts may be provided with a refractive portion refracted in the outward direction to facilitate the entry of the busbar.

Hereinafter, a preferred embodiment of the busbar connecting spacer of the present invention will be described with the accompanying drawings.

2 is a perspective view of a spacer provided with an embodiment of the present invention, Figure 3 is a perspective view of the spacer shown in FIG. FIG. 4 is a perspective view of the use state of the spacer shown in FIG. 3, FIG. 5 is a perspective view of the leaf spring shown in FIG. 2, and FIG. 6 is a cross-sectional view of the use state of the connecting device shown in FIG. 2.

In the connection portion of the busbar 100, a plurality of busbars 100, spacers 110 made of an insulating material inserted between the busbars 100, and outer surfaces of the busbars 100 are respectively provided. A covering protective cover 120 is prepared.

The connecting device for connecting the busbars 100, the leaf spring 130 is placed on the outer surface of the upper and lower protective cover 120, respectively; It is composed of a bolt 140 and a nut 150 fastened to upper and lower leaf springs 130 on both sides of the busbar 100, the spacer 110, and the protective cover 120 to generate tensile force, respectively.

On one side or both sides of the spacer 110, a front guide part 114 for guiding the front surface of the bus bar 100 and a pair of side guide parts 116 for guiding both side surfaces of the bus bar 100 are formed. .

In addition, grooves 112 are formed at both sides of the spacer 110 to allow the bolts 140 to be partially inserted, and the front guide part 114 and the side guide part 116 are formed at the edges of the grooves 112. The auxiliary guide portion 113 protrudes to a height. Auxiliary guide 113 is to prevent the bending of the bus bar 100 and the spacer 110 because a strong pressure may occur around the bolt 140.

One end of the pair of side guide parts 116 is formed with a refraction portion 118 refracted in the outward direction to facilitate the entry of the busbar 100.

Leaf springs 130 are disposed on each of the two protective cover 120. Each leaf spring 130 is formed so that both ends are bent in the outward direction. The leaf spring 130 is unfolded when the tensile force is generated from the bolt 140 and evenly press the protective cover 120.

The leaf spring 130 is formed with a bushing 132 for passing the bolt 140, respectively. The bushing 132 formed on the leaf spring 130 on one side is formed with a guide part 134 for preventing the head of the bolt 140 from rotating.

By forming the through hole 122 through which the bolt 140 passes through the edge of the protective cover 120, the position of the bolt 140 is fixed.

Hereinafter, the operation of the spacer having the above configuration will be described.

In the installation process of the connecting device according to the present embodiment, first, the spacer 110 is sandwiched between a plurality of bus bars 100 to be connected. The refraction portion 118 formed on the side guide portion 116 of the spacer 110 allows the bus bar 100 to easily enter, and the front guide portion 114 guides the front surface of the bus bar 100. , The side guide part 116 guides both sides of the busbar 100.

And the protective cover 120 is coupled to each of the busbars 100 on the outside. Then, the leaf spring 130 is positioned on the outer surface of the outer plate, and the bolt 140 passes through the bushing 132 of the leaf spring 130.

Initially, the leaf spring 130 has both end portions bent outward, but when the nut 150 is rotated, the head of the bolt 140 is caught by the guide portion 134 to prevent rotation, so that tension force is applied to the bolt 140. To generate and pull the edge of each leaf spring 130.

Accordingly, the leaf spring 130 is unfolded while pressing the protective cover 120 evenly. Therefore, the plurality of busbars 100 and the spacers 110 positioned inside the protective cover 120 are uniformly pressed, and the busbars 100 are well connected.

As described above, the spacer of the present invention uniformly supports the wide area of the busbar, and the bolt passes through the side, thereby maintaining the structural strength.

The present invention has been described above by way of specific embodiments, but the present invention is not limited to the above-described embodiments, and those skilled in the art without departing from the gist of the present invention claimed in the claims. Anyone can make a variety of variations.

Claims (2)

In the spacer for insulating the busbar at the portion where a plurality of busbars are connected, On one side or both sides, a front guide part for guiding the front side of the bus bar and a pair of side guide parts for guiding both sides of the bus bar are formed, and grooves for allowing a bolt to be partially inserted are formed at both sides. A bus bar connecting spacer, wherein an auxiliary guide portion protrudes from the edge of the groove at the same height as the front guide portion and the side guide portion. The bus bar connecting spacer according to claim 1, wherein one end of the pair of side guide parts is provided with an outwardly refracted portion to facilitate entry of the bus bar.

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