KR20170037360A - busduct connector and connecting method of the same - Google Patents

Abstract

A bus duct connection unit and a connection method thereof are disclosed. According to the bus duct connection unit and the connection method thereof, bus ducts, adjacent to each other, are electrically connected by allowing bus bars to directly contact each other without a connection kit, thereby conveniently and easily performing a connection work and maintaining long-term performance even under a severe environment.

Description

[0001] The present invention relates to a bus duct connecting part,

The present invention relates to a bus duct connecting portion and a connecting method thereof, and more particularly, to a bus duct connecting portion which can be connected directly without a separate connecting kit, can be easily and easily carried out, And a connection method thereof.

Generally, cables have been used as a medium for transferring electrical energy. Recently, bus ducts have been used as a substitute for cables. The bus duct is equipped with a bus bar that acts as a conductor core included in the cable and has the advantage of energizing a large amount of current.

Originally, in the power wiring method, the wiring method by the wire cable has been widely used. However, in a wiring method of a high-rise building or a large-scale factory, a wiring method by a bus duct having a bus bar gradually Is increasingly adopted.

These booth ducts and cables have commonality in that they have conductors and insulators, but cables use vinyl or rubber to protect or insulate conductors, but booth ducts carry large amounts of current through the conductors, making them difficult to protect directly as insulators There is a difference in that the insulator is coated on the bus bar and the bus bar is embedded in the metal duct.

Such a booth duct is widely used in a place where a relatively large amount of electric power is used because it is easy to expand and install the booth duct and can be quickly recovered when the abnormality or an accident occurs on the power wiring of the bus bar.

Moreover, since the electricity supply system of the current building requires energy of large and diverse capacity as compared to the past, the use of bus ducts which are safe and have low energy loss is rapidly increasing in accordance with this trend.

For example, booth ducts can be used in a variety of industries such as factories, buildings, apartments, large discount marts, officetels, research complexes, department stores, golf courses, tunnels, semiconductors and LCD factories, chemicals, refineries, steel mills, high-rise buildings, And so on.

The booth bar provided in the booth duct is usually provided inside the duct of a predetermined size in a state isolated from the outside because a large current flows. The booth duct including the booth bar is manufactured as a unit unit having a predetermined length After that, it is connected to the facilities to be installed and the distribution design.

At this time, a connecting portion is provided so that the booth duct manufactured as a unit unit can be continuously installed. That is, in each bus duct, conductors are connected to each other by conductors, and external ground is connected to ground.

Such a conventional connection portion is structured such that the conductive plate and the insulating plate are alternately arranged and the bus bar of the bus duct is inserted between the conductive plates and then tightly coupled with the conductive plate and the insulating plate with the fastening bolts to tightly connect the inserted bus bar . Then, the booth duct is assembled by connecting the enclosure of the booth duct to the connection section enclosure.

However, in the case of connecting the bus duct by applying the connection kit composed of the separate conductive plate and the insulating plate like the above connection structure, the number of workers is increased and the connection kit must be separately manufactured and provided.

In order to ensure high safety, booth ducts applied to ships, wind power facilities, chemical plants and refinery plants should not only ensure the insulation performance between booth bars but also be resistant to corrosion and corrosion, so that they can be used for long periods in harsh environments. do.

Therefore, there is a need for a bus duct connecting portion which can be directly connected without a separate connection kit, can be easily and easily connected, and has excellent insulation performance and corrosion resistance.

Embodiments of the present invention are intended to simplify and facilitate connection work by making electrical connection between neighboring bus ducts by directly contacting bus bars without a connection kit.

Also, there is a need for a durable bus duct connection to maintain long term performance in harsh environments.

According to an aspect of the present invention, there is provided a booth duct connecting portion to which booth bars of adjacent booth ducts are connected, comprising: a plurality of insulating plates attached to a booth bar at one side of the booth duct to be insulated from each other; A ground plate extending from an enclosure of the bus duct and serving as a ground for discharging current and voltage induced in the enclosure; And a fastening bolt penetrating through the insulating plate, the ground plate, and the bus bar and coupling the insulating plate, the ground plate, and the bus bar in a laminated state, wherein the bus bars of the neighboring bus ducts are in direct contact with each other And the bus duct connecting portion is electrically connected to the bus duct connecting portion.

The insulating plate may include at least one protrusion inserted into the adjacent insulating plate or the bus bar.

The booth duct connecting portion according to the present invention may further include at least one insert portion provided on the adjacent insulating plate or bus bar and inserted into and engaged with the protruding portion.

The bus bars on one side to be connected may be bent between the bus bars on the other side so that they can contact each other.

The booth bar and the ground plate on the other side may be provided with an insertion seat capable of seating the fastening bolt inserted in the lateral direction.

The fastening bolt may have a double bolt head which is broken when a torque of a predetermined magnitude or more is applied, and an identification tag fixed by the double bolt head.

The bus bars of the bus duct may be spaced apart from each other by a thickness of the bus bar.

The booth bar of the bus duct includes an epoxy insulating layer on the outer side, and a portion where the epoxy insulating layer is removed for connection can be applied with tin plating.

According to another aspect of the present invention, there is provided an air conditioner comprising: a plurality of insulating plates attached to a booth bar on one side of a booth duct so as to be insulated from each other, and a grounding member extending from the enclosure of the booth duct and serving as a ground for discharging currents and voltages induced in the enclosures. And a fastening bolt penetrating through the insulating plate, the ground plate, and the bus bar and coupling the insulating plate, the ground plate, and the bus bar in a laminated state, the connecting method comprising: Arranging and arranging the booth bars of the duct in direct contact with each other; Tightening the fastening bolt; And a step of installing a connection unit enclosure outside the connection unit.

In the step of tightening the fastening bolt, the double bolt head of the fastening bolt may be broken, and torque may be applied until the identification tag is separated.

Embodiments of the present invention can easily and easily carry out the connection work by neighboring bus ducts making direct contact with each other by directly contacting the bus bars without a connection kit.

In addition, it is possible to provide a durable bus duct connection portion that can maintain long-term performance even in harsh environments.

1 is a perspective view of a booth duct according to an embodiment of the present invention;
2 is a side view of a bus duct connecting portion before connection according to an embodiment of the present invention.
3 is a side view of a bus duct connecting portion after connection according to an embodiment of the present invention
4 is a side view of a bus duct connecting portion before connection according to another embodiment of the present invention
5 is a side view of a bus duct connecting portion after connection according to another embodiment of the present invention
6 to 10 are views showing a connection process of a booth duct according to an embodiment of the present invention

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals designate like elements throughout the specification.

FIG. 1 is a perspective view of a booth duct according to an embodiment of the present invention, FIG. 2 is a side view of a bus duct connecting portion before connection according to an embodiment of the present invention, and FIG. 3 is a side view of a booth after connection according to an embodiment of the present invention. A side view of the duct connection. FIG. 4 is a side view of a bus duct connecting portion before connection according to another embodiment of the present invention, and FIG. 5 is a side view of a bus duct connecting portion after connection according to another embodiment of the present invention.

1 to 5, a booth duct connecting part 100 according to an embodiment of the present invention includes a plurality of insulating plates 110 (not shown) attached to a booth bar 20 on one side of the bus duct 10, A ground plate 18 extending from the enclosure 12 of the bus duct 10 and serving as a ground for discharging current and voltage induced in the enclosure 12 and a ground plate 18 for grounding the insulating plate 110, And a fastening bolt 140 that penetrates through the bus bar 20 and connects the insulating plate 110, the ground plate 18, and the bus bar 20 in a stacked state .

A basic structure of the booth duct 10 according to an embodiment of the present invention includes an enclosure 12 defining a predetermined space therein. Inside the enclosure 12, a bus bar 20 serving as a conductor core included in the cable is provided to energize a large amount of current. A wing portion 14 is formed by extending a certain length on both sides of the upper and lower surfaces of the enclosure 12 in order to reinforce the strength.

The bus bar 20 is made of a conductor 22 such as copper or aluminum. In this embodiment, the bus bar 20 is mainly made of aluminum. Specifically, in the present embodiment, the bus bar 20 may be made of aluminum having a conductivity of 61% or more.

The surface of the conductor 22 is covered with an insulating layer 24 such as an epoxy coating and electrically insulated from each other. Since the bus bar 20 normally flows through a large current, the bus bar 20 covers and insulates the insulating layer 24 from the outside, and is accommodated in the enclosure 12 while being isolated from the outside.

The insulating layer 24 is removed for connection of the bus duct 10 and the exposed portion of the conductor can be made to have corrosion resistance and corrosion resistance even in an environment exposed to salt or various chemicals by applying tin plating Therefore, it can be used in environments requiring high safety such as ships, wind power, chemical and refinery plants.

The bus bars 20 are disposed inside the enclosure 12 so as to be spaced apart from each other by a predetermined distance, so that insulation performance can be improved through air insulation between the booth bars 20. The spacing distance is typically spaced by the thickness of the bus bar 20.

1 to 3, the booth bar 20 includes four phases of four phases R, S, T, and N. The configuration of the booth bar 20 is not limited to the installation target of the booth duct 10, Environment, power capacity to be supplied, and the like. For example, the bus bar 20 may be composed of three-phase bus bars 20 of R, S, T as shown in FIGS. 4 and 5, or five bus bars 20 of R, S, (20).

The enclosure 12 is made of a high-strength aluminum material so as to have a sufficient grounding capacity, and the surface can be coated with a corrosion-resistant insulating coating material.

The enclosure 12 including the booth bar 20 may be manufactured as a unit having a predetermined length and then connected to the booth duct connecting portion 100. At this time, the end of the bus bar 20 inserted into the bus duct connecting part 100 peels off the insulating layer 24 to expose the conductor 22 to the outside, as described above.

In the meantime, the bus-duct connecting part 100 according to the embodiment of the present invention is in direct contact with the bus-bars 20 of neighboring bus-ducts 10 without a separately provided connection kit.

That is, the bus bars 20 of the adjacent bus ducts 10 are alternately interposed between the adjacent bus bars 10 without interposing an energizing plate for mediating a separate electrical connection to the connecting portion 100, so that electrical contact is established. To this end, the bus bar 20 of the bus duct 10 is formed so that one side thereof extends straight and the other side thereof is formed with bent bent portions, and can be sandwiched between the respective bus bars 20.

An insulating plate 110 is attached between the bus bars 20 on which the bent portions are formed. The insulating plate 110 serves to insulate each phase of the bus bars 20 in a state where phases corresponding to each other are connected to each other. The insulating plate 110 may be bonded to one side of each bus bar 20 using an adhesive agent.

A ground plate 18 extends from the enclosure 12 at the outermost sides of the bus bar 20 and the insulation plate 110. The adjacent grounding plates 18 are brought into contact with each other to establish an electrical connection and serve as a ground for discharging current and voltage induced in the enclosure 12 through the electrical connection.

The bus duct (10) protected by a metal enclosure such as aluminum is inevitably exposed to an unnecessary current and voltage in the enclosure due to eddy current, induced current, leakage current, and the like. Since the ground plate 18 is provided, the current and voltage induced in the enclosure 12 can be safely drained through the ground line formed by the enclosure 12 and the ground plate 18, It can prevent the electric shock accident.

An insulating plate 110 is also attached to the inside of the ground plate 18 to perform an insulating function with the neighboring bus bars 20.

The insulating plate 110 may include at least one protrusion 112 inserted into the adjacent insulating plate 110 or the bus bar 20. The insertion portion 27 may be formed in the adjacent insulating plate 110 or the bus bar 20 so that the protrusion 112 can be inserted into the insulator plate 110 or the bus bar 20 to correspond to the protrusion 112.

In this embodiment, a groove-like insertion portion 27 is formed in the bus bar 20. The shape of the insertion portion 27 can be variously modified as needed, such as an insertion hole or an insertion groove.

The protrusions 112 and the inserts 27 reinforce the bonding force of the insulating plate 110 adhesively bonded to each other by maintaining the bonding force between the protrusions 112 and the neighboring bus bars 20 or the insulating plate 110, It is possible to prevent an incomplete inter-phase insulation due to the pushing action of the insulating plate 110.

The protrusion 112 and the inserting portion 27 are also formed between the insulating plate 110 and the grounding plate 18 to enhance the bonding force between them.

Meanwhile, a fastening bolt 140 may be provided to fasten the insulating plate 110, the ground plate 18, and the bus bar 20 in a laminated state. Although two fastening bolts 140 are provided in this embodiment, one or more fastening bolts 140 may be provided.

Specifically, the fastening bolts 140 are provided so as to pass through the insulating plate 110, the ground plate 18, and the bus bar 20 of any one of the bus ducts 10 connected to each other. In addition, the busbar 20 and the ground plate 18 on the other side may be provided with an insertion seat part 145 which can be seated in the transverse direction of the fastening bolt 140.

The bus bar 20 and the ground plate 18 of the other side bus duct 10 can be advanced to the connection position without being interfered with the tightening bolt 140 through the insertion seat portion 145. Also, the fastening bolt 140 is fastened in a state where the fastening bolt 140 is seated on the insertion seat part 145, so that the connection of the bus duct 10 can be easily performed.

That is, in the bus duct connecting part 100 according to the embodiment of the present invention, the bus bars 20 are inserted so as to be in contact with each other alternately without a separate connection kit, .

The fastening bolt 140 may include a double bolt head 142 which is broken when a torque of a predetermined magnitude or more is applied thereto and an identification tag 144 fastened by the double bolt head 142.

When the torque of the fastening bolt 140 is applied through the torque wrench 50 from 700 kgf · cm to 1000 kgf · cm, the double-bolt head 142 is broken and the identification tag 144 is automatically released, The fastening force and the connection state can be confirmed.

6 to 10 are views showing the connection process of a bus duct according to an embodiment of the present invention.

The connecting process of the bus duct according to the embodiment of the present invention will be described with reference to FIGS. 6 to 10. FIG.

After confirming that there is no deformation or unevenness in the connection area of the booth duct 10 to be connected, check whether the booth duct 10 is aligned in the connection direction. Then, slowly push the booth duct (10) in the connecting direction.

Here, the connection direction refers to the direction in which the bus bars 20 of the bus duct 10 face each other, and is pushed until the above-described fastening bolts 140 are seated on the insertion seat portions 145.

In this state, the double bolt head 142 of the fastening bolt 140 is broken through the torque wrench 50, and the torque is applied until the identification tag 144 comes off. In this embodiment, when the two double bolt heads 142 are broken and the identification tag 144 is detached, the connection unit enclosure 102 is assembled and finished.

According to the booth duct connecting portion described so far, the neighboring bus ducts are directly contacted with each other without the connection kit, so that the connecting operation can be carried out easily and easily. In order to maintain the long-term performance in a harsh environment Durability can be obtained.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the appended claims. You can do it. It is therefore to be understood that the modified embodiments are included in the technical scope of the present invention if they basically include elements of the claims of the present invention.

10: Booth duct 12: Enclosure
18: ground plate 20: bus bar
22: conductor 24: insulating layer
25: bent portion 27: insertion portion
100: connecting part 110: insulating plate
112: protrusion 140: fastening bolt
142: double bolt head 144: identification tag

Claims (10)

In a booth duct connecting portion to which booth bars of mutually adjacent booth ducts are connected,
A plurality of insulating plates attached to one side of the busbars of the bus duct for insulation between phases;
A ground plate extending from an enclosure of the bus duct and serving as a ground for discharging current and voltage induced in the enclosure; And
And a fastening bolt penetrating through the insulating plate, the ground plate, and the bus bar and coupling the insulating plate, the ground plate, and the bus bar in a laminated state,
Wherein the booth bars of the neighboring bus ducts are in direct contact with each other to be electrically connected to each other. The method according to claim 1,
Wherein the insulating plate comprises:
And at least one projecting portion inserted and joined to an adjacent insulating plate or bus bar. 3. The method of claim 2,
And at least one inserting portion provided on the adjacent insulating plate or bus bar for inserting and coupling the protrusion. The method according to claim 1,
And the bus bar on one side of the connection is inserted between the bus bars on the other side so as to have bent bent portions so that they can contact each other. 5. The method of claim 4,
Wherein the booth duct and the ground plate on the other side are provided with an insertion seat capable of seating the fastening bolt in a lateral direction. The method according to claim 1,
Wherein the fastening bolt has a double bolt head which is broken when a torque of a predetermined magnitude or more is applied, and an identification tag fixed by the double bolt head. The method according to claim 1,
Wherein the booth bars of the booth ducts are spaced apart from each other by a thickness of the booth bars. 8. The method of claim 7,
Wherein the booth bar of the booth duct includes an epoxy insulation layer on the outside and the tin plating is applied to a portion where the epoxy insulation layer is removed for connection. A plurality of insulating plates attached to one side of the busbars of the bus duct for insulation between phases; a ground plate extending from the enclosure of the busb duct and serving as a ground for discharging currents and voltages induced in the enclosures; A method of connecting a booth duct connecting part including a plate and a bus bar, and a fastening bolt for connecting the insulating plate, the ground plate and the bus bar in a laminated state,
Arranging and arranging the booth bars of neighboring booth ducts in direct contact with each other;
Tightening the fastening bolt; And
And installing a connection unit enclosure outside the connection unit. 10. The method of claim 9,
Wherein the step of fastening the fastening bolts comprises applying a torque until the double bolt head of the fastening bolt is broken so that the identification tag is separated.

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