KR102773797B1 - Busduct Connecting Device And Busduct Power System - Google Patents

Abstract

The present invention relates to a bus duct connection device capable of connecting different types of bus bars, which improves the compatibility and workability of power facilities and significantly reduces costs, and to a bus duct power system equipped with the same.

Description

Busduct connecting device and busduct power system equipped with the same {Busduct Connecting Device And Busduct Power System}

The present invention relates to a bus duct connection device and a bus duct power system having the same. More specifically, the present invention relates to a bus duct connection device capable of connecting different types of bus bars, which improves the compatibility and workability of power facilities and significantly reduces costs, and a bus duct power system having the same.

In the past, the method of wiring using wire cables was widely adopted as the method of power distribution, but recently, due to the rapid increase in the demand for electricity in buildings such as high-rise buildings, apartments, and large-scale factories, wiring using bus ducts using bus bars is spreading.

Bus ducts are equipped with bus bars that perform the same role as conductor cores included in cables and are capable of transmitting large amounts of current. Originally, for internal wiring in large buildings or large factories, bus duct wiring is superior to power cable wiring in terms of space utilization and ease of installation. Not only is this bus duct easy to expand and relocate, but it is also easy to handle and quickly restore in the event of an abnormality or accident in the bus bar's power wiring, so it is widely used in places that use relatively large amounts of electricity.

The demand for bus duct systems that replace these power cables is rapidly increasing due to their advantages, such as large-capacity current transmission, efficient space utilization, ease of construction, and stable power quality. As competition among products intensifies, the competitive landscape is being formed toward lightweight, compact products in response to customer and market demands for diversity.

For the purpose of weight reduction and compactness, sandwich-type bus ducts that stack bus bars to form a bus duct are widely used. Such bus ducts are connected through bus duct connecting devices at regular intervals depending on the shape or size of the space in which they are installed, and the bus bars at the end of the bus duct can be inserted into the bus duct connecting device in an exposed state so that they can be installed.

Fig. 9 is a perspective view showing a pair of bus ducts connected to a typical bus duct connecting device, and Fig. 10 is a perspective view showing the typical bus duct connecting device shown in Fig. 9 and the bus duct separated.

A typical bus duct connection device (200) is equipped with a current-carrying plate on both sides of a connection space (in which bus bars forming a bus duct are inserted and electrically connected), and a structure is adopted in which two bus bars of a bus duct are inserted and connected on both sides of each connection space.

A bus duct connection device of this type has a current-conducting plate on at least one inner surface of each connection space, and can be electrically connected by making contact with both sides of a bus bar inserted for connection.

As shown in FIGS. 9 and 10, bus ducts (100a, 100b) for power supply are manufactured by unit length and can be connected via bus duct connection devices (200). Accordingly, the bus ducts (100a, 100b) have a structure that can be connected to bus duct connection devices (200) at both ends.

The bus duct (100a, 100b) illustrated in FIGS. 9 and 10 may be configured to include an outer case (30) that accommodates a plurality of bus bars (20) arranged in parallel or stacked, a male connection part (40) formed by exposing a conductor (21) while the bus bars (20) are spaced apart at least at one end in the longitudinal direction of the outer case (30), a plate part (50) that is fastened to an end of the outer case (30) and includes a pair of plate members (51) arranged parallel to the conductor on the outside of the male connection part (40), and a mold member (60) that is fastened to the end side of the outer case (30) and provides a mounting surface for the plate member (51).

The end of the busbar (20) constituting the above bus duct (100a, 100b) forms a male connection part (40) in which a conductor (21) without the insulator (23) is exposed.

The configuration of the above busbar (20) can be configured in various ways depending on the installation target or installation environment of the busduct (100a, 100b), the power capacity to be supplied, etc. For example, the above busbar (20) can be configured with three phases of R, S, and T as shown in Fig. 2. However, it is not limited thereto, and it is also possible to have four busbars composed of R, S, T, and N, or to have five busbars (20) by combining R, S, T, and two Ns.

Accordingly, a pair of bus ducts (100a, 100b) connected through a bus duct connection device (200) can each be equipped with N bus bars, and the bus duct connection device (200) can provide N connection spaces in both directions for electrically connecting the N bus bars of both bus ducts (100a, 100b) while insulating them by phase.

In order to connect a pair of bus ducts using a bus duct connection device (200) like this, the bus ducts connected to the bus duct connection device must be bus ducts of the same type and specifications.

That is, only when the specifications, such as the thickness and width, of the busbars of the bus ducts inserted and connected into the connection spaces of the aforementioned bus duct connection devices are the same, the busbars of each bus duct can be fixed in a connected state in each connection space by the fastening bolts that constitute the bus duct connection device.

However, when connecting different types of busbars, for example, when the thickness or width of the busbars forming the busduct are different, connection is not possible using a busduct connecting device as shown in FIGS. 9 and 10.

For example, if the thickness of the busbars forming one of the two busducts is different, the busbar of the thinner busduct cannot be electrically connected and fixed within the busduct connection device, and if the widths of the busbars, etc. are different, one of the busducts cannot be inserted into the busduct connection device.

Therefore, if the specifications or types of the bus ducts to be connected are different, a method of cutting each bus duct end and individually configuring the connection part according to the connection environment by welding or other methods can be used, but the connection method is difficult and the cost increases significantly.

However, the types of bus ducts that make up large power systems may vary by area, and the same problems may occur during maintenance of the power system.

The present invention aims to solve the problem of providing a bus duct connection device and a bus duct power system equipped with the same, which enables connection between different types of bus bars, thereby improving the compatibility and workability of power facilities and significantly reducing costs.

In order to solve the above problem, the present invention can provide a bus duct connecting device for connecting different types of bus bars, including: a first connection portion having a first bus duct having a plurality of bus bars connected in a first direction, a plurality of insulating plates for mutually insulating connection spaces in which the plurality of bus bars are respectively inserted and connected, and a plurality of conductive plates for electrically connecting the bus bars within the plurality of connection spaces; a second connection portion having a second bus duct having a plurality of bus bars connected in a second direction different from the first direction, a plurality of insulating plates for mutually insulating connection spaces in which the plurality of bus bars are respectively inserted and connected, and a plurality of conductive plates for electrically connecting the bus bars within the plurality of connection spaces; and a plurality of connecting conductors inserted into the plurality of connection spaces of the first connection portion and the second connection portion and electrically connected to the respective conductive plates within the respective connection spaces; wherein the bus bars of the first bus duct and the bus bars of the second bus duct are different types.

In addition, the connecting conductor may include a first insertion portion inserted into and connected to a connection space of the first connecting portion, a second insertion portion inserted into and connected to a connection space of the second connecting portion, and a connecting portion connecting the first insertion portion and the second insertion portion.

And, an insulating layer can be formed at the connecting portion of the connecting conductor.

Here, the first insertion portion of the connecting conductor may correspond to the busbar of the first bus duct, and the second insertion portion of the connecting conductor may correspond to the busbar of the second bus duct.

In this case, each of the connecting conductors may be configured integrally with the first insertion portion, the second insertion portion, and the connecting portion.

And, the thicknesses of the first insertion portion and the second insertion portion of the connecting conductor may be different from each other.

In addition, the thickness of the busbar of the first bus duct and the thickness of the first insertion portion of the connecting conductor may be substantially the same, and the thickness of the busbar of the second bus duct and the thickness of the second insertion portion of the connecting conductor may be substantially the same.

Additionally, the widths of the first insertion portion and the second insertion portion of the connecting conductor may be different from each other.

And, the first insertion portion and the second insertion portion of the connecting conductor are parallel and can be bent at a boundary area with the connecting portion so that the connecting portion can be connected at an angle to the first insertion portion and the second insertion portion.

Here, the inclination angle of the connecting portions of the plurality of connecting conductors may be greater than the inclination angle of the connecting conductor arranged on the outside.

In this case, the thickness of the busbar of the first bus duct connected to the first connection portion and the thickness of the busbar of the second bus duct connected to the second connection portion may be different from each other.

In addition, the widths of the busbar of the first bus duct connected to the first connection portion and the busbar of the second bus duct connected to the second connection portion may be different from each other.

Additionally, the materials of the busbar of the first bus duct connected to the first connection portion and the busbar of the second bus duct connected to the second connection portion may be different from each other.

In addition, it may further include a cover plate that surrounds the upper and lower parts of the first connecting portion and the second connecting portion.

Here, the cover plate may include a first cover part covering the first connection part, a second cover part covering the second connection part, and a cover connecting part connecting the first cover part and the second cover part.

In this case, the cover connecting portion is configured with a wrinkle structure to compensate for the thickness difference between the first connecting portion and the second connecting portion, and the first cover portion, the second cover portion, and the cover connecting portion can be configured as one piece.

Additionally, an outermost insulating plate of the first connecting portion and the second connecting portion may be provided on the inner side of the cover plate.

In addition, the first connecting portion and the second connecting portion may include a fastening bolt that penetrates and connects the cover plate, the insulating plate, and the conducting plate, respectively, in order to maintain the connection state of the bus duct and the connecting conductor to which they are connected.

Additionally, a plurality of bus ducts may be connected in parallel to the first connection portion or the second connection portion.

And, the first connecting portion and the second connecting portion may include a plurality of fastening bolts that penetrate and connect the cover plate, the insulating plate, and the current-carrying plate, respectively, in order to maintain the connection state of the connected bus duct and the connecting conductor according to the number of connected bus ducts.

Here, a fixing means may be provided to ensure that the connection state of the connecting conductor and the connecting portion is fixed.

In this case, the fixing means may have a fixing hole or a fixing groove formed in one of at least one insertion portion of the connecting conductor and a current-carrying plate provided in a connection space into which the insertion portion is inserted and connected, and a fixing projection that is secured and fixed in the fixing hole or the fixing groove may be provided in the other.

In addition, in order to solve the above problem, the present invention can provide a bus duct power system including a bus duct connecting device for connecting heterogeneous bus bars as described above; at least one first bus duct connected in a first direction to a first connecting portion of the bus duct connecting device; and at least one second bus duct connected in a second direction to a second connecting portion of the bus duct connecting device.

According to the bus duct connection device according to the present invention and the bus duct power system having the same, it is possible to improve the compatibility of power facilities by enabling connection of different bus bars having different thicknesses or widths of bus bars constituting the bus duct.

In addition, according to the bus duct connection device according to the present invention and the bus duct power system having the same, connection of different bus bars having different thicknesses or widths of bus bars constituting the bus duct is possible, so that a method of forming a joint for cutting and joining the bus duct is not required, thereby improving the workability of on-site bus duct installation work and greatly reducing costs.

In addition, according to the bus duct connection device according to the present invention and the bus duct power system equipped with the same, the convenience of maintenance can be improved by enabling connection of different bus bars during the maintenance or repair process required for bus duct operation.

FIG. 1 is a perspective view of a bus duct power system in which a pair of bus ducts are connected to a bus duct connecting device according to the present invention.
FIG. 2 is a perspective view of a bus duct power system with the bus duct connection device and the bus duct separated according to the present invention illustrated in FIG. 1.
FIG. 3 is a side view showing a state in which a bus duct is connected to a bus duct connecting device according to the present invention illustrated in FIG. 1.
Figure 4 illustrates an exploded perspective view of a bus duct connecting device according to the present invention.
Figure 5 is an enlarged side view for confirming the connecting conductor of the bus duct connecting device according to the present invention.
FIG. 6 illustrates a perspective view and a side view of a connecting conductor according to one embodiment of a bus duct connecting device according to the present invention.
FIG. 7 illustrates a plan view of a connecting conductor and a plan view and cross-sectional view of a current-carrying plate according to another embodiment of a bus duct connecting device according to the present invention.
Figure 8 illustrates another embodiment of a bus duct connecting device according to the present invention.
Figure 9 is a perspective view showing a pair of bus ducts connected to a typical bus duct connecting device.
Figure 10 illustrates a perspective view of a typical bus duct connection device illustrated in Figure 9 and a state in which the bus duct is separated.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed contents can be thorough and complete, and so that the spirit of the invention can be sufficiently conveyed to those skilled in the art. Like reference numerals represent like elements throughout the specification.

FIG. 1 is a perspective view of a bus duct power system (1) in which a pair of bus ducts (100a, 100b) are connected to a bus duct connection device (200) according to the present invention. FIG. 2 is a perspective view of a bus duct power system (1) in which the bus duct connection device (200) according to the present invention and the bus ducts (100a, 100b) illustrated in FIG. 1 are separated.

The busbars (20) of the bus ducts (100a, 100b) that can be connected by the bus duct connection device (200) according to the present invention as shown in FIGS. 1 and 2 may be in contact with each other, i.e., may be sandwich-type bus ducts, but are not limited thereto. Recently, when a bus duct (100a, 100b) for power supply of the same capacity is configured compactly, price competitiveness can be secured due to the cost of raw materials, etc., and the occupied space can be reduced, so compactness is becoming a standard for competitiveness of the bus ducts (100a, 100b).

The configuration of the above busbar (20) can be configured in various ways depending on the installation target or installation environment of the busduct (100a, 100b), the power capacity to be supplied, etc. For example, the above busbar (20) can be configured in R, S, T, and N phases as shown in Fig. 2. However, it is not limited thereto, and it is also possible to have three busbars configured in R, S, and T, or to have five busbars configured by combining R, S, T, and two Ns.

The above busbar (20) may be made of a conductor (21) such as copper or aluminum. If the conductor (21) of the above busbar (20) is copper, a material having a conductivity of 99% or higher may be used, and if it is aluminum, a material having a conductivity of 61% or higher may be used.

The surfaces of the conductors (21) are each covered with an insulator (23) such as an epoxy coating and are electrically insulated from each other. Since a large current usually flows through the busbar (20), it is first covered with an insulator (23) to insulate it, and then housed in an isolated state from the outside inside the outer case (30) to protect it.

Accordingly, a pair of bus ducts (100a, 100b) connected through the bus duct connection device (200) illustrated in FIGS. 1 and 2 may each be equipped with four bus bars (20), and the bus duct connection device (200) may provide four connection spaces (S1, S2, S3, S4, see FIG. 5) in both directions for electrically connecting the four bus bars (20) of the two bus ducts (100a, 100b) in a phase-by-phase insulated state.

The direction in which the above busbars (20) are stacked is the up-down direction in Fig. 1, but is not limited thereto, and both the left-right direction is possible.

In this embodiment, instead of arranging the busbars (20) in a sandwich type, an insulator (23) may be provided to surround the outer surface of the conductor (21) of the plurality of busbars (20) for interphase insulation. The insulator (23) may be composed of, for example, an epoxy coating, through which not only can the insulation performance be strengthened, but also a heat resistance performance of about 130° C. In addition to epoxy, PET (polyethylene terephthalate), Mica, etc. may be applied as the insulator (23).

And, as shown in Fig. 2, the bus duct (100a, 100b) can form a male connection part (40) in which the ends of a plurality of bus bars (20) inserted into the bus duct connection device (200) expose and deploy a conductor (21) without the insulator (23).

In the embodiment shown in FIGS. 1 and 2, the male connecting portion (40) is configured such that the conductors (21) of the four busbars (20) are spaced apart and exposed, so that each conductor (21) can be inserted into the connection space of the bus duct connecting device (200) according to the present invention.

And, the bus duct connection device (200) according to the present invention electrically connects the conductors of the bus bars (20) of each phase while mutually insulating the conductors (21) of the bus bars (20) constituting a pair of bus ducts (100a, 100b).

In the past, bus ducts connected through a bus duct connection device (200) like this had to be of the same type or size and of the same type. However, the bus duct connection device (200) according to the present invention has a feature that enables connection of different types of bus bars.

Specifically, a pair of bus ducts (100a, 100b) connected by a bus duct connection device (200) according to the present invention may be bus ducts having different thicknesses, widths, or materials of bus bars (20), respectively. Therefore, the bus duct connection device (200) according to the present invention has the feature of being able to connect different types of bus bars without forming individual joints by cutting or welding, etc.

To this end, the bus duct connection device (200) according to the present invention has a first connection portion (200a) and a second connection portion (200b) through which first bus ducts (100a) and second bus ducts (100b) of different types or specifications are connected from different directions, and the first connection portion (200a) and the second connection portion (200b) can be connected within the bus duct connection device (200) by a connecting conductor (300) (300, see FIG. 3 and below).

Hereinafter, the bus duct connection device (200) according to the present invention will be described in detail.

FIG. 3 is a side view of a bus duct connection device (200) according to the present invention illustrated in FIG. 1 and a bus duct (100a, 100b) connected thereto, FIG. 4 is an exploded perspective view of a bus duct connection device (200) according to the present invention, FIG. 5 is an enlarged side view for confirming a connecting conductor (300) of a bus duct connection device (200) according to the present invention, FIG. 6 is a perspective view and a side view of a connecting conductor according to one embodiment of a bus duct connection device according to the present invention, and FIG. 7 is a plan view of a connecting conductor and a plan view and a cross-sectional view of a current-carrying plate according to another embodiment of a bus duct connection device according to the present invention.

A bus duct connecting device (200) according to the present invention comprises: a first connecting portion (200a) having a first bus duct (100a) having a plurality of bus bars (20) connected in a first direction, a plurality of insulating plates (220a) for mutually insulating connection spaces into which the plurality of bus bars (20) are respectively inserted and connected, and a plurality of conductive plates (210a) electrically connected to the bus bars (20) within the plurality of connection spaces; a second connecting portion (200b) having a plurality of bus bars (20) connected in a second direction different from the first direction, a plurality of insulating plates (220b) for mutually insulating connection spaces into which the plurality of bus bars (20) are respectively inserted and connected, and a plurality of conductive plates (210b) electrically connected to the bus bars (20) within the plurality of connection spaces; And, a plurality of connecting conductors (300) inserted into a plurality of connecting spaces of the first connecting portion (200a) and the second connecting portion (200b) to electrically connect the respective current-carrying plates (210a, 210b) in each connecting space; Including, the busbar of the first bus duct (100a) and the busbar of the second bus duct (100b) may be a bus duct connecting device for connecting different types of bus bars.

The first bus duct (100a) connected in the first direction as shown in Fig. 3 and the second bus duct (100b) connected in a second direction different from the first direction are connected to the first connecting portion (200a) and the second connecting portion (200b), respectively. Here, the first direction and the second direction may be opposite directions.

Specifically, the busbars (20) constituting the first bus duct (100a) connected in the first direction of the present invention and the second bus duct (100b) connected in the second direction can be inserted into the connection space of each connection part and electrically connected by coming into contact with the current-carrying plate provided in the connection space of each connection part.

The structure of each connection part is explained.

The structure of a bus duct connection device (200) according to one embodiment of the present invention will be reviewed. The bus duct connection device (200) according to the present invention illustrated in FIGS. 3 to 5 may be provided with four connection spaces (S1 (S1'), S2 (S2'), S3 (S3'), S4 (S4'), see FIG. 5) for mutually insulating and electrically connecting four bus bars (20) provided in each of a pair of bus ducts (100a, 100b) to a first connection portion (200a) to which a first bus duct (100a) is connected and a second connection portion (200b) to which a second bus duct (100b) is connected.

In the case of a general bus duct connection device (200), since bus ducts of the same specification are connected as described above, the width or height of each connection space into which a bus bar (20) is inserted and connected is configured to be the same, but in the present invention, since a pair of bus ducts of different specifications are connected, the specifications such as the height of the four connection spaces (S1 (S1'), S2 (S2'), S3 (S3'), S4 (S4')) provided in the first connection portion (200a) and the second connection portion (200b) may be configured to be different from each other.

In particular, when the thickness or width of the busbar (20) constituting each bus duct is different, the height or width of the four connection spaces (S1 (S1'), S2 (S2'), S3 (S3'), S4 (S4')) provided in the first connection portion (200a) and the second connection portion (200b) must be configured differently.

Each connection space (S1 (S1'), S2 (S2'), S3 (S3'), S4 (S4')) is formed by arranging five insulating plates (220a, 220b) at regular intervals, and in four connection spaces (S1 (S1'), S2 (S2'), S3 (S3'), S4 (S4')) provided between each insulating plate (220a, 220b), a plurality of current-carrying plates (210a, 210b) are provided on one or both sides of the insulating plates (220a, 220b) to come into contact with the busbar (20). Here, the insulating plates (220a, 220b) are spaced apart and stacked to form a connection space and at the same time serve to insulate the current-carrying plates from each other.

In this case, each insulating plate (220a, 220b) may have a structure in which a mounting groove (222a, 222b) into which a respective conductive plate (210a, 210b) can be mounted is formed, thereby supporting the conductive plate by mounting it therein.

And, as illustrated in FIG. 4, the conductive plate (210a) provided in each connection space (S1, S2, S3, S4) of the first connection portion (200a) is divided into a first conductive plate (211a) and a second conductive plate (213a), and the conductors of the four busbars (20) of the first bus duct (100a) connected to the connection spaces (S1, S2, S3, S4) are configured to be inserted between the first conductive plate (211a) and the second conductive plate (213a), respectively, so that both sides of the busbars (20) are in contact. A structure may be adopted in which a protrusion, etc. is formed on the first conductive plate (211a) and the second conductive plate (213a) to limit the insertion depth of the busbar or the connecting conductor, thereby preventing contact between the busbar or the connecting conductor and the fastening bolt, etc.

On the other hand, the conductive plates (210b) provided in each of the connection spaces (S1', S2', S3', S4') of the second connection portion (200b) are configured independently, and the conductors of the four bus bars (20) of the second bus duct (100b) connected to the connection spaces (S1', S2', S3', S4') can be configured to be inserted into each of the connection spaces (S1', S2', S3', S4') and come into contact with one surface of each of the conductive plates (210b).

The structure of each connection part (200a, 200b) can be determined according to the structure or specification of the bus duct connected to each connection part.

In summary, the conductive plates (210a, 210b) arranged on both sides or one side of the connection space (S1, S2, S3 and S4) between the insulating plates (220a, 220b) make electrical connections by contacting the busbars (20) of a pair of bus ducts (100a, 100b), and the insulating plates (220a, 220b) perform the role of providing phase insulation between the conductive plates (210a, 210b) forming each pair.

The structure, such as the first connecting portion (200a), has two conductive plates (211a, 213a) for conducting each busbar (20) and the upper and lower surfaces of one busbar (20) are connected to each conductive plate (211a, 213a), so that the contact area between the pair of conductive plates (211a, 213a) and the busbar (20) is maximized and the fastening force between the busbar and the conductive plate is strengthened, and the structure, such as the second connecting portion (200b), has the advantage of minimizing weight and cost by connecting the busbar (20) and the conductive plate in a 1:1 ratio, and since the conductive plate is provided only on one side of the connection space during the process of inserting the busbar (20), the insertion resistance of the busbar (20) is lowered, so that workability can be improved.

Accordingly, the first connection part (200a) and the second connection part (200b) constituting the bus duct connection device (200) according to the present invention may be configured in a manner in which the bus bar (20) and the current-carrying plate (210a, 201b) are in double-sided contact, or in a single-sided contact manner, and may be configured in a manner in which both the double-sided contact method and the single-sided contact method are applied, as illustrated in FIGS. 3 to 5.

The above-mentioned conductive plates (210a, 210b) may be composed of a material such as copper, aluminum, a copper alloy, or an aluminum alloy, and the above-mentioned conductive plates (210a, 210b) may be plated with silver or tin to prevent corrosion.

As shown in FIGS. 3 to 5, the bus duct connecting device (200) according to the present invention may further include a cover plate (280) that surrounds the upper and lower portions of the first connecting portion (200a) and the second connecting portion (200b).

The bus duct connection device (200) according to the present invention has two connection parts in one connection device, but a cover plate (280) covering the first connection part (200a) and the second connection part (200b) may be provided on the outermost part.

Inside the above cover plate (280), outermost insulating plates (220a, 220b, 220a’, 220b’) are respectively provided at the upper and lower portions.

As illustrated in FIGS. 3 to 5, the cover plate (280) may be configured to include a first cover portion (280a) covering the first connection portion (200a), a second cover portion (280b) covering the second connection portion (200b), and a cover connection portion (280c) connecting the first cover portion (280a) and the second cover portion (280b). Furthermore, the cover connection portion (280c) may be configured with a wrinkle structure to compensate for a thickness difference between the first connection portion (200a) and the second connection portion (200b), and the first cover portion (280a), the second cover portion (280b), and the cover connection portion (280c) may be configured as one piece.

That is, the first cover part (280a), the second cover part (280b), and the cover connection part (280c) are configured as one piece, but the cover connection part (280c) may be configured as a wrinkle structure to provide flexibility. In addition, the first cover part (280a) and the second cover part (280b) may each be provided with two through holes (282a, 282b) for penetration of fastening bolts.

And, the first connecting portion (200a) and the second connecting portion (200b) have a through hole (not shown in the drawing) formed in the center of the cover plate (280), the insulating plate (220a, 220b) and the conducting plate (210a, 210b), respectively, and a fastening bolt (240a, 240b) is inserted through the through hole to connect the cover plate (280), the insulating plate (220a, 220b) and the conducting plate (210a, 210b).

The above fastening bolts (240a, 240b) are inserted into the through hole, and then fastening nuts (270a, 270b) are combined and tightened on the opposite side, thereby fixing the cover plate (280), the insulating plate (220a, 220b), and the current-carrying plate (210a, 210b) by pressing them inward. At this time, the busbar (20) inserted into the connection spaces (S1, S2, S3, and S4) is also fixed in a pressed state, and is in close contact with the current-carrying plate (210a, 210b) on both sides or one side to form electrical contact.

A plate spring (250a, 250b) is provided at the portion where the above-mentioned fastening bolt (240a, 240b) is inserted and at the portion where the fastening nut (270a, 270b) on the other side is tightened, thereby serving to increase the fastening force. In addition, a break index (255a, 255b) is provided at the portion where the fastening bolt (240a, 240b) configured in the form of a break bolt is inserted, thereby enabling identification of whether the fastening bolt (240a, 240b) is sufficiently fastened.

Meanwhile, when the above fastening bolt (240a, 240b) is inserted into the above through hole, an insulating bushing (drawing symbol not shown) may be inserted together to surround the outside of the above fastening bolt (240a, 240b).

In addition, a plurality of the insulating plates (220a, 220b) may be provided with a ring-shaped protruding rib (not shown in the drawing symbol) around the through holes on the upper and lower surfaces so that the areas penetrated by the fastening bolts (240a, 240b) are mutually aligned to enable laminated assembly.

And, as illustrated in Fig. 4, an elastic spacer ring (226a, 226b) may be provided to surround the laminated assembly portion by the protruding ribs of adjacent insulating plates (220a, 220b).

The above spacer rings (226a, 226b) can additionally insulate the fastening bolts (240a, 240b) penetrating the through holes and space out the connection spaces (S1, S2, S3 and S4) before the fastening nuts (270a, 270b) are completely fastened, thereby facilitating the insertion of the busbar (20).

In this way, the bus duct connection device (200) according to the present invention is provided with a first connection part (200a) and a second connection part (200b), and the structure of each connection part has the form of a connection device (or connection kit) for connecting a conventional bus duct of the same type, and the connection space of each connection part can be electrically connected through a connection conductor (300).

That is, as described above, each connection space is provided with two or one electrically conductive plate for electrical connection of each busbar (20), and each of the electrically conductive plates is connected to the busbars (20) of the bus duct, which are connected in the first direction and the second direction, respectively, through the first connection portion (200a) and the second connection portion (200b).

In addition, the bus duct connection device (200) according to the present invention may be provided with a plurality of connection conductors (300) that electrically connect the connection spaces of each of the first connection portion (200a) and the second connection portion (200b).

As shown in FIGS. 5 and 6, each connecting conductor (300) is inserted into the inner connection space (S1 (S1'), S2 (S2'), S3 (S3'), S4 (S4')) of the first connecting portion (200a) and the second connecting portion (200b) to electrically connect the first connecting portion (200a) and the second connecting portion (200b).

And, each of the connecting conductors (300) may include a first insertion portion (310) that is inserted into and connected to a connection space (S1, S2, S3, S4) of the first connecting portion (200a), a second insertion portion (350) that is inserted into and connected to a connection space (S1', S2', S3', S4') of the second connecting portion (200b), and a connection portion (330) that connects the first insertion portion (310) and the second insertion portion (350).

Additionally, the first insertion part (310), the second insertion part (350), and the connection part (330) may be formed integrally.

The first insertion portion (310) and the second insertion portion (350) of the connecting conductor (300) are parallel and can be configured to be bent at the boundary area with the connecting portion (330) so that the connecting portion is slanted to connect the first insertion portion (310) and the second insertion portion (350).

In addition, the first insertion portion (310) of the connecting conductor (300) constituting the connecting device of the present invention may be configured to correspond to the busbar of the first bus duct, and the second insertion portion (350) of the connecting conductor (300) may be configured to correspond to the busbar of the second bus duct. For example, each of the first insertion portion (310) and the second insertion portion (350) may have substantially the same specifications (thickness and width) as the busbar (20) of the bus duct connected to each connecting portion. That is, the thickness and width of the busbar (20) of the first bus duct (100a) may be substantially the same as the thickness and width of the first insertion portion (310) of the connecting conductor (300), and the thickness and width of the busbar (20) of the second bus duct (100b) may be substantially the same as the thickness and width of the second insertion portion (350) of the connecting conductor (300).

Specifically, the thicknesses of the first insertion portion (310) and the second insertion portion (350) of the connecting conductor (300) are different from each other, the thickness of the busbar of the first bus duct (100a) and the thickness of the first insertion portion (310) of the connecting conductor (300) may be substantially the same, and the thickness of the busbar of the second bus duct (100b) and the thickness of the second insertion portion (350) of the connecting conductor (300) may be substantially the same.

In addition, as described above, the bus duct connection device (200) according to the present invention is a bus duct connection device for connecting different types of bus bars. In the case of different types of bus bars, in addition to the case where the thickness of each bus bar (20) is different (t1>t2), even if the thickness is the same, the width of each bus bar (20) may be different or the material may be different.

When the width of each busbar is different, the widths of the first insertion portion (310) and the second insertion portion (350) of the connecting conductor (300) may also be configured differently.

In this way, it means that the thickness or width of the busbars constituting the first bus duct and the second bus duct connected to the first connection portion and the second connection portion of one connecting conductor may be different, and accordingly, the thickness or width of the first connection portion and the second connection portion of the connecting conductor may also be different.

Therefore, as shown in FIG. 5 and FIG. 6, the first insertion portion (310) and the second insertion portion (350) of each connecting conductor (300) are parallel, but the first insertion portion (310) and the second insertion portion (350) are slightly bent in order to compensate for the gap difference of each connection space at the boundary area with the connecting portion (330), so that the connecting portion (330) forms an inclined surface (330s) and can be configured to connect the first insertion portion (310) and the second insertion portion (350). The inclination angle (θ, bending angle) of the connecting portion is not the same for all connecting conductors, and the inclination angle (θ) can be configured to become larger as it goes toward the outside. That is, when connecting based on each central connection space, the positional deviation or thickness difference of the connection space accumulates as it goes toward the outer connection space, so that the inclination angle (θ) of the connecting conductor can become larger as it goes toward the outside. In addition, this inclination angle is In addition to the folding method, it can also be configured by banding to have a gentle slope.

And, it is preferable that the connecting portion of the connecting conductor (300) form an insulating layer. The insulating layer may be formed by wrapping an insulating tape around the connecting portion of the connecting conductor (300) or by coating an insulating material such as epoxy resin. This will be described later with reference to FIG. 7.

In addition, the width of each insertion portion constituting the connecting conductor (300) may be configured differently as shown in Fig. 6. The width of each insertion portion (310, 350) may be configured differently depending on the structure of the insertion portion, etc.

In addition, a fixing means may be provided to fix the connection state of the connecting conductor (300) and the connecting portion. As the fixing means, a fixing hole or a fixing groove may be formed in one of at least one insertion portion of the connecting conductor (300) and a current-carrying plate provided in a connection space into which the insertion portion is inserted and connected, and a fixing projection that is fixedly seated in the fixing hole or the fixing groove may be provided in the other. As an example, as illustrated in FIG. 6, at least one of the insertion portions (310, 350) constituting the connecting conductor (300) may have one fixing hole (350h) formed in it, and a current-carrying plate (210b, see FIG. 4) provided in a connection space into which the insertion portion is inserted and connected may be provided with a fixing projection (211bp, see FIG. 4). Alternatively, it is also possible to form a fixing projection on at least one insertion portion of the connecting conductor (300) and provide a fixing hole in the current-carrying plate.

In the embodiments illustrated in FIGS. 3 to 6, each connection space of the first connection portion (200a) is provided with two conductive plates, and each connection space of the second connection portion (200b) is provided with one conductive plate. Since each insertion space of the second connection portion (200b) is provided with one conductive plate, the insertion resistance of the busbar (20) of the bus duct is low, but the fixing force of the busbar (20) may be low, so that in order to reinforce this, fixing holes and fixing projections may be provided on the entirety of the second insertion portion (350) of the connecting conductor (300) and the conductive plates of the second connection portion (200b).

However, the fixing hole and the fixing projection may be provided only in the second insertion portion (350) of one connecting conductor (300) and the current-carrying plate of the second connecting portion (200b), or the fixing hole and the fixing projection may be provided in the first insertion portion (310) of the connecting conductor (300) and the current-carrying plate of the first connecting portion (200a), and the fixing hole may also be configured in the form of a fixing groove.

In addition, if the structure prevents separation of the connecting conductor and the current-carrying plate in the fastening state, various structures other than holes and protrusions can be applied as a fixing means.

FIG. 7 illustrates an example in which the thickness of each insertion portion (310, 350) constituting the connecting conductor (300) is different, but the width is configured to be the same, unlike the embodiment referring to FIG. 6.

Specifically, Fig. 7(a) illustrates a plan view of a connecting conductor, Fig. 7(b) illustrates a plan view of a conductive plate constituting a connecting portion in the form of a connecting kit, and Fig. 7(c) illustrates a cross-sectional view of the conductive plate (based on line A-A' of Fig. 7(b)).

As shown in Fig. 7(a), in order to fix the connection state of the connecting conductor (300) and the connecting portion, two fixing holes (350h) are provided in the connecting conductor (300) as a fixing means, and as shown in Figs. 7(b) and 7(c), two fixing projections (210p) are provided in the current-carrying plate (210) forming the connecting portion and having a fastening bolt through-hole (210h) formed therein, so that rotation or twisting of the connecting conductor can be prevented in the connection state of the connecting conductor and the connecting portion, thereby enhancing the positioning function and the fastening function.

And, in the embodiment illustrated in Fig. 7, the positions of the fixing hole and the fixing projection may be swapped between the connecting conductor and the current-carrying plate, or each may have one fixing hole and one fixing projection, and similarly, the fixing hole may be configured in the form of a fixing groove, similar to the embodiment described above.

In summary, the fixing means may have a fixing hole or a fixing groove formed in one of at least one insertion portion of the connecting conductor (300) and a current plate (210) provided in a connection space into which the insertion portion is inserted and connected, and a fixing projection that is fixedly secured in the fixing hole or the fixing groove provided in the other, thereby enhancing the fastening force in the bus duct connection state.

In addition, since the connection portion (330) between the plurality of connecting conductors (300) has an exposed section that is not covered by the insulation plate (220a, 220b, see FIG. 4) of each connecting portion, a problem may occur in the insulation performance between adjacent connecting conductors, and furthermore, although the connection portion (330) of the connecting conductor (300) is configured to be placed within the cover plate of the bus duct connecting device (200), it is not configured to be inserted into each connecting portion, and therefore, it is exposed in a non-conductive state in the lateral direction, and therefore, for safety reasons, it is preferable to form an insulating layer at the connection portion of the connecting conductor (300).

Furthermore, an insulating material, for example, an insulating tape (330t), may be wrapped around a portion of each insertion portion (310, 350), specifically, the boundary area between the insertion portion and the connection portion, to minimize the exposed portion in a non-conductive state. In addition, examples of the insulating tape (330t) include PET (polyethylene terephthalate) tape, Mica tape, etc., and an insulating layer may be formed by a method such as epoxy coating instead of an insulating tape.

Figure 8 illustrates another embodiment of a bus duct connecting device (200) according to the present invention.

Typically, a bus duct connection device (200) (or connection kit) connects a pair of bus ducts that are typically connected in opposite directions.

However, when the power transmission demand is greater, as shown in Fig. 8, a plurality of bus ducts (100a and 100c, 100b and 100d) may be connected to the connection portion of one bus duct connection device (200).

In the embodiment illustrated in Fig. 8, two bus ducts (100a and 100c, 100b and 100d) are connected in parallel to each of the first connection portion (200a) and the second connection portion (200b), and accordingly, the bus duct power system enables power transmission twice. In addition, the number of bus ducts connected to one connection portion of the bus duct connection device (200) may be configured to increase further.

In this case, the number of fastening bolts for fastening and fixing the bus duct connection device (200) and the bus duct at each connection portion is provided equal to the number of bus ducts connected through each connection portion, thereby enabling stable connection of the bus ducts. In the embodiment illustrated in Fig. 8, two bus ducts may be connected to each connection portion, and two fastening bolts for fastening and fixing each bus duct may be provided.

In addition, the embodiment illustrated in Fig. 8 may also be provided with a connecting conductor (300) for conducting current through the connection space of each connection part.

In this case, each connecting conductor (300) may be divided and configured to correspond to the number of bus ducts to be connected, but for purposes such as assembling efficiency or securing conductor area, it may be provided only in the number of connection spaces provided in each bus duct connecting device (200), as in the above-described embodiment. In this case, each connecting conductor (300) may be configured to have a width that allows it to be simultaneously connected to two connection spaces of the first connecting portion (200a) and two connection spaces of the second connecting portion (200b).

In the case of applying the bus duct connection device according to the present invention and the bus duct power system having the same, the compatibility of power facilities can be improved by enabling connection between different types of bus bars having different thicknesses or widths of bus bars constituting the bus duct, and since the method of cutting and joining different types of bus bars does not have to be used, the workability of on-site bus duct installation work can be improved and the cost can be significantly reduced. Furthermore, since connection of different types of bus bars is enabled during the maintenance or repair process required for bus duct operation, the convenience of maintenance of the bus duct power system can also be improved.

Although this specification has been described with reference to preferred embodiments of the present invention, those skilled in the art will be able to modify and change the present invention in various ways without departing from the spirit and scope of the present invention as set forth in the claims below. Therefore, if the modified implementation basically includes the elements of the claims of the present invention, it should be considered to be included in the technical scope of the present invention.

1: Bus duct power system
100 : Bus duct
200 : Bus duct connection device
300 : connecting conductor

Claims (23)

A first bus duct having a plurality of bus bars is connected in a first direction, a first connection portion having a plurality of insulating plates for mutually insulating connection spaces into which the plurality of bus bars are respectively inserted and connected, and a plurality of conductive plates electrically connected to the bus bars within the plurality of connection spaces;
A second bus duct having a plurality of bus bars is connected in a second direction different from the first direction, and a second connection part having a plurality of insulating plates for mutually insulating connection spaces in which the plurality of bus bars are each inserted and connected, and a plurality of conductive plates electrically connected to the bus bars within the plurality of connection spaces; and,
A plurality of connecting conductors, each of which is inserted into a plurality of connecting spaces of the first connecting portion and the second connecting portion and electrically connected to each of the current-carrying plates in each connecting space, and which include a first insertion portion inserted into and connected to the connecting space of the first connecting portion, a second insertion portion inserted into and connected to the connecting space of the second connecting portion, and a connecting portion connecting the first insertion portion and the second insertion portion;
The busbar of the first bus duct and the busbar of the second bus duct are of different types,
A bus duct connection device for connecting heterogeneous bus bars, characterized in that the connecting portion of the above connecting conductor has an insulating layer formed thereon. delete delete In the first paragraph,
A bus duct connecting device for connecting different bus bars, characterized in that the first insertion portion of the connecting conductor corresponds to the bus bar of the first bus duct, and the second insertion portion of the connecting conductor corresponds to the bus bar of the second bus duct. In the first paragraph,
A bus duct connecting device for connecting heterogeneous bus bars, characterized in that each of the above connecting conductors is formed integrally with the first insertion portion, the second insertion portion, and the connecting portion. In the first paragraph,
A bus duct connecting device for connecting heterogeneous bus bars, characterized in that the first insertion portion and the second insertion portion of the connecting conductor have different thicknesses. In Article 6,
A bus duct connecting device for connecting different types of bus bars, characterized in that the thickness of the bus bar of the first bus duct and the thickness of the first insertion portion of the connecting conductor are substantially the same, and the thickness of the bus bar of the second bus duct and the thickness of the second insertion portion of the connecting conductor are substantially the same. In the first paragraph,
A bus duct connecting device for connecting heterogeneous bus bars, characterized in that the widths of the first insertion portion and the second insertion portion of the connecting conductor are different from each other. In the first paragraph,
A bus duct connecting device for connecting heterogeneous bus bars, characterized in that the first insertion portion and the second insertion portion of the connecting conductor are parallel and are bent at a boundary area with the connecting portion so that the connecting portion has an incline angle and connects the first insertion portion and the second insertion portion at an angle. In Article 9,
A bus duct connection device for connecting heterogeneous bus bars, characterized in that the angle of inclination of the connecting portions of the plurality of connecting conductors becomes larger as they go in the direction of the second insertion portion. In the first paragraph,
A bus duct connecting device for connecting different bus bars, characterized in that the bus bar of the first bus duct connected to the first connecting portion and the bus bar of the second bus duct connected to the second connecting portion have different thicknesses. In the first paragraph,
A bus duct connecting device for connecting different bus bars, characterized in that the widths of the bus bars of the first bus duct connected to the first connecting portion and the widths of the bus bars of the second bus duct connected to the second connecting portion are different from each other. In the first paragraph,
A bus duct connecting device for connecting different bus bars, characterized in that the bus bar of the first bus duct connected to the first connecting portion and the bus bar of the second bus duct connected to the second connecting portion are made of different materials. In the first paragraph,
A bus duct connecting device for connecting heterogeneous bus bars, characterized in that it further includes a cover plate that surrounds the upper and lower portions of the first connecting portion and the second connecting portion. In Article 14,
A bus duct connecting device for connecting heterogeneous bus bars, characterized in that the cover plate includes a first cover part covering the first connection part, a second cover part covering the second connection part, and a cover connecting part connecting the first cover part and the second cover part. In Article 15,
A bus duct connecting device for connecting heterogeneous bus bars, characterized in that the cover connecting portion is configured with a wrinkle structure to compensate for the thickness difference between the first connecting portion and the second connecting portion, and the first cover portion, the second cover portion, and the cover connecting portion are configured as one piece. In Article 14,
A bus duct connection device for connecting heterogeneous bus bars, characterized in that the inner side of the cover plate includes an outermost insulating plate of the first connection portion and the second connection portion. In Article 17,
A bus duct connecting device for connecting different types of bus bars, characterized in that the first connecting portion and the second connecting portion include a fastening bolt that penetrates and connects the cover plate, the insulating plate, and the current-conducting plate, respectively, in order to maintain the connection state of the bus duct and the connecting conductor to be connected. In Article 14,
A bus duct connection device for connecting heterogeneous bus bars, characterized in that a plurality of bus ducts are connected in parallel to the first connection portion or the second connection portion. In Article 19,
A bus duct connecting device for connecting different types of bus bars, characterized in that the first connecting portion and the second connecting portion include a plurality of fastening bolts that penetrate and connect the cover plate, the insulating plate, and the current-conducting plate, respectively, to maintain the connection state of the connected bus duct and the connecting conductor according to the number of connected bus ducts. In the first paragraph,
A bus duct connection device for connecting heterogeneous bus bars, characterized in that it comprises a fixing means to fix the connection state of the connecting conductor and the connecting portion. In Article 21,
A bus duct connecting device for connecting different types of bus bars, characterized in that the fixing means has a fixing hole or a fixing groove formed in one of at least one insertion portion of the connecting conductor and a current-carrying plate provided in a connection space into which the insertion portion is inserted and connected, and a fixing projection that is fixedly secured in the fixing hole or the fixing groove is provided in the other. A bus duct connection device for connecting heterogeneous bus bars according to any one of claims 1 and 4 to 22;
At least one first bus duct connected in a first direction to a first connecting portion of the above bus duct connecting device; and
A bus duct power system comprising at least one second bus duct connected in a second direction to a second connection portion of the above bus duct connecting device.