CN217740806U - Bus duct joint, joint device and bus duct - Google Patents

Abstract

The present disclosure provides a busway junction (3 a, 3 b) comprising: at least two contacts (30 a, 30b, 30c, 30d, 30 e), each of said contacts comprising a conductor; wherein at least one of the at least two contacts comprises at least two conductors (310, 320, 330); wherein each adjacent two of the at least two conductors are spaced apart from each other by a gap (300), and the gap (300) is configured such that when a connector device (2) paired with the connector (3 a, 3 b) is connected to the connector (3 a, 3 b), the conductors on the connector device (2) are inserted into the gap (300) and the conductors inserted into the gap (300) are in simultaneous electrical contact with the adjacent two conductors (310, 320, 330) spaced apart from each other by the gap (300). The disclosure also relates to a splice device and a bus duct.

Description

Bus duct joint, joint device and bus duct

Technical Field

Embodiments of the present disclosure generally relate to busways, and more particularly, to busway splices, splice devices, and busways.

Background

Busways are increasingly used in a variety of power distribution scenarios, such as high-rise buildings, factories, and data centers. With the use of the bus duct in a large range, users put higher requirements on the reliability and convenience of bus duct products.

Conventionally, a junction device for a bus duct provides one or two conductive connection tabs for each phase circuit of a two-phase or three-phase circuit. It is known that heat is generated by the passage of current through a conductor. When the temperature of the joint device as a whole rises due to heat generated by current flowing through the conductive connecting piece in the joint device, the resistance of the conductive connecting piece in the joint device increases, which in turn decreases the efficiency of current transmission. Excessive heat generation will also create other hazards. Accordingly, it is desirable to provide a bus duct design that increases current transfer efficiency and reduces heat.

Disclosure of Invention

In view of the above, an object of the embodiments of the present disclosure is to provide a joint device for a bus duct, a bus duct joint and a bus duct, which can solve or alleviate at least one problem in the prior art.

According to a first aspect of the present disclosure, there is provided a busway junction comprising: at least two contacts, each of said contacts comprising a conductor; wherein at least one of the at least two contacts comprises at least two conductors; wherein each adjacent two of the at least two conductors are spaced apart from each other by a gap, and the gap is configured such that when a joint device paired with the joint is connected to the joint, a conductor on the joint device is inserted into the gap and a conductor inserted into the gap is in simultaneous electrical contact with the adjacent two conductors spaced apart from each other by the gap. Through such design, the contact area of the electric connection between the conductor of the contactor of the bus duct joint and the joint device is increased, so that the current-carrying performance of the conductor of the contactor of the bus duct joint is improved, the heat generated by the current flowing through the conductor of the contactor of the bus duct joint is reduced, and the bus duct current transmission efficiency is improved. In addition, with this design, the busway joint can also be reduced in size while maintaining the same contact area as the conventional busway joint and the conventional joint device. This is advantageous for reducing the overall volume of the bus duct.

According to one embodiment, at least two conductors of the at least one contact extend parallel to each other. The at least two conductors extending in parallel can facilitate alignment of the busway joint with the splice device during installation, which can improve the efficiency of fitting the splice device to the busway joint.

According to one embodiment, each of the at least two conductors of the at least one contact is a flat conductor plate. When busway splices are electrically connected to splice devices, it is desirable that the contact area of the conductors of the contacts of the busway splices with the conductive connecting tabs of the splice devices be kept to a maximum. In this case, it is desirable to design the conductors of the contacts of the bus duct as flat conductor plates. The flat conductor plate increases the contact area of the busway junction and the junction device by making surface contact with a conductive connecting tab on the junction device.

According to one embodiment, the at least two contacts are arranged in parallel along an arrangement direction of at least two conductors in said contacts. Similar to the implementations described above with respect to extending at least two conductors parallel to each other, arranging the contactors in parallel alignment following the direction of conductor alignment can also facilitate alignment of the busway contacts with the contact arrangement, which can also improve assembly efficiency.

According to a second aspect of the present disclosure, there is provided a busway comprising a busway junction as described in accordance with the first aspect. Which includes all the advantages of the busway junction described in accordance with the first aspect and will not be described in detail here.

According to one embodiment, the bus duct further comprises: a housing, and at least two bus bars housed in the housing; wherein the busway joint is arranged at least at one end of the shell, and the conductor of each of the at least two contactors of the busway joint is electrically connected with a corresponding one of the at least two busbars. By such a design, the busway joint can establish an electrical connection between the joint device and a busbar within the busway housing.

According to a third aspect of the present disclosure, there is provided a junction device for a bus duct, comprising: at least three baffles; at least two sets of conductive tabs, each set of conductive tabs located between every two adjacent ones of the at least three separator plates to be isolated from each other by the plurality of separator plates, and each set of conductive tabs including a plurality of conductive tabs that are stacked. The contact device is matched with the bus duct joint described according to the first aspect, so that the contact area of the conductor of the contactor of the bus duct joint and the electrical connection of the contact device is increased, the current carrying performance of the conductor of the contactor of the bus duct joint is improved, the heat generated by the current flowing through the conductor of the contactor of the bus duct joint is reduced, and the bus duct current transmission efficiency is improved.

According to an embodiment, the at least three conductive connecting tabs of each set of conductive connecting tabs are configured such that when the connector device is matingly connected with a busway connector according to the first aspect, each adjacent two conductive connecting tabs grip one conductor of at least one contact of the busway connector. In use, one conductor of the contactor of the busway joint is clamped through the two conductive connecting sheets, so that the contact between the conductor and the two conductive connecting sheets is reliable, and meanwhile, the two conductive connecting sheets are kept to contact one conductor of the contactor of the busway joint to the maximum extent, so that the contact area between the joint device in an electric connection state and the busway joint is ensured to be stable.

According to one embodiment, each of the at least three baffles is provided with a first sleeve on a first side and a second sleeve on a first side opposite the first side, and the outer cross section of the second sleeve is complementary in shape to the inner cross section interface of the first sleeve. By the foolproof design of the first and second sleeves, the first and second sides of the bulkhead can be oriented in the respective desired orientations. During assembly, if the actual installation direction of the partition is opposite to the desired installation direction, interference will occur between the first sleeves or between the second sleeves such that one partition cannot be assembled onto another partition.

According to one embodiment, the cross-sectional shape of the inner cross-section of the first sleeve and the outer cross-section of the second sleeve is non-circular. This allows relative rotation between the first and second sleeves to be prevented after the first and second sleeves are inserted into engagement. Thereby enabling the foolproof design of the first sleeve and the second sleeve to be further improved.

According to one embodiment, one of the first and second sleeves of each of the at least three separators is in insertion fit with the other of the first and second sleeves of an adjacent separator, and the conductive tab has an opening disposed therebetween, the opening of the conductive tab passing through the first and second sleeves of two separators adjacent thereto. This makes the conductive connection piece set up between two adjacent baffles, and accomplish the plug-in fit of first sleeve and second sleeve, the conductive connection piece can be spacing by first sleeve, second sleeve and baffle to prevent it from droing from the baffle. This promotes efficiency in assembling the joint arrangement.

According to one embodiment, the first sleeve comprises protrusions or indentations extending outwardly from the outer side of the first sleeve, and the opening edge in the middle of the conductive tab is provided with indentations or protrusions such that the indentations of the opening edge cooperate with the protrusions of the first sleeve or the protrusions of the opening edge cooperate with the indentations of the first sleeve when the conductive tab passes through the first sleeve. This allows relative rotation between the conductive tab and the first sleeve to be prevented. In addition, this design also provides fool-proofing when assembling the splice device. When the conductive tab is not assembled in the desired orientation, it cannot be placed over the separator plate due to interference of the projections or indentations of the edge of the opening with the indentations or projections on the outside of the first sleeve. This improves the accuracy of assembling the joint arrangement.

Drawings

Embodiments of the invention will now be described, by way of example only, with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts, and in which:

fig. 1 is an example of a busway arrangement according to the present disclosure, wherein the busway arrangement includes a splice device according to the present disclosure and a busway splice;

fig. 2 is a partial perspective view illustrating the bus duct of fig. 1 including a busway junction;

FIG. 3 is a perspective view of one example of a joint arrangement according to the present disclosure;

FIG. 4 is an exploded view of the joint assembly according to FIG. 3;

fig. 5 shows a partial view of the busway joint according to fig. 2 and the joint arrangement according to fig. 3 in an electrically connected state;

FIG. 6A shows a via schematic comprising two conductive via branches according to FIG. 5 in an electrically connected state;

fig. 6B shows a pathway schematic including three branches of conductive pathways, according to another embodiment of a bus duct;

FIG. 7A shows two adjacent partitions of the joint arrangement according to FIG. 3;

fig. 7B shows a spacer and a conductive connection pad of the joint arrangement according to fig. 3.

Detailed Description

Embodiments of the present disclosure will now be described in detail with reference to the drawings. It should be noted that in the drawings, similar components or functional elements may be denoted by the same reference numerals. The accompanying drawings are intended to be merely illustrative of embodiments of the disclosure and not limiting thereof. Persons skilled in the art may derive alternatives from the following description without departing from the spirit and scope of the disclosure.

In the present disclosure, the term "conductive tab" includes conductors made of any suitable conductive material. For example, when the conductive connection pad is made of copper, the conductive connection pad may be referred to as "copper bar"; when the conductive connection pad is made of aluminum, the conductive connection pad may be referred to as "aluminum bar". The term "conductor" refers to a metal or alloy, including copper, aluminum, that is capable of causing current to flow from one side of the conductor to the other.

It should be noted that the joint device provided according to the embodiment of the present disclosure may be configured to be applied to a two-phase or three-phase or more-phase bus circuit scenario.

For a three-phase bus circuit, for example, the connector device may include four sets of conductive tabs, each set including a plurality of conductive tabs. A plurality of conductive connection tabs arranged in a group are each adapted to connect with a respective one of the contacts of the connector. For example, a first set of conductive tabs is adapted to electrically connect with a first contact of a connector to form a first via for a first phase. The second set of conductive tabs is adapted to electrically connect with a second contact of the connector to form a second path to a second phase. The third set of conductive tabs is configured to electrically connect with a third contactor of the connector to form a third path for a third phase. The fourth set of conductive tabs is configured to electrically connect with the fourth contact of the connector to form a fourth path to ground. This will be more clearly seen by the embodiments of the junction device and busway junction described below in conjunction with the drawings.

Alternatively, for a three-phase bus circuit, the joint arrangement may further comprise five sets of conductive connection pads, i.e. a fifth set of conductive connection pads in addition to said first to fourth sets of conductive connection pads. A fifth set of conductive connection pads is configured to electrically connect with a fifth contact of the connector to form a path for the neutral wire.

In further embodiments, the joint and joint arrangement provided by the present disclosure may also be applied in a two-phase bus circuit scenario. For two-phase bus circuits, for example, two sets of conductive connection pads may be provided for the connector device. Accordingly, the connector may be provided with first and second contactors. The electrical connection arrangement of the joint and the joint device is similar to that applied in a three-phase bus circuit scenario.

A busway junction, a busway using the busway junction, and a junction device paired with the busway junction according to embodiments of the present disclosure will be described in detail below with reference to the drawings.

Fig. 1 shows one example of a busway arrangement comprising a junction device, busway junction according to the present disclosure. Typically, the busway taps 3a, 3b are provided at the ends of the housing 20 of the busway 1. A space capable of accommodating a bus bar (conductor) is provided inside the housing 20 of the bus duct 1. In use, one side of the busway junction is electrically connected to a busbar and the other side of the busway 1 is used to electrically connect to the junction device 2. In other words, the junction device 2 can be used to make an electrical connection between busbars inside two busways 1 by connecting the two busway junctions 3a, 3b, thereby forming at least two different electrically conductive paths. As shown in fig. 1, the junction device 2 is arranged between two busway junctions 3a, 3 b. Examples of the structure of the junction device 2 and busway junctions 3a, 3b and how the busway junctions mate to establish an electrical connection are described in detail below.

With continued reference to fig. 1, additional components may also be provided outside of the splice device 2 and busway splices 3a, 3b to enhance the reliability of the electrical connection of the splice device 2 with the busway splices 3a, 3 b. If only the components shown in fig. 1 are used, the bus duct taps 3a, 3b provided at the ends of the bus duct will be exposed to air, which is detrimental to the reliability of the electrical connection. Therefore, a protective housing (not shown in the drawings) may also be provided outside the junction device 2 and the bus duct junctions 3a, 3b, which encloses the junction device 2 and the bus duct junctions 3a, 3b against a severe environment such as sand, rain, and the like, to improve reliability of electrical connection. In another example, the junction device 2 and busway junctions 3a, 3b may also be configured to be coupled to such a protective enclosure. For example, by designing the protective casing, the splice device 2, the busway splices 3a, 3b such that the protective casing couples the busway splices and the splice device at its inner side to prevent relative movement between the busway splices and the splice device, reliability of the electrical connection is provided. Other components or structural designs capable of holding the busway nipples 3a, 3b and the nipple device 2 in relative position are also possible.

Examples of busway splices 3a, 3b and splice devices 2 will be described in detail below. A person skilled in the art will be able to know how to establish an electrical connection directly between the junction device 2 and the busway junctions 3a, 3b after understanding the following structural description of the junction device 2 and the busway junctions 3a, 3 b.

Fig. 2 shows an example of a busway junction 3a, 3 b. As shown in fig. 2, the bus duct junction 3a includes: five contacts 30a, 30b, 30c, 30d, 30e, each of which comprises two conductors 310, 320. Adjacent two conductors 310, 320 are spaced from each other by a gap 300, the gap 300 being configured such that when a splice device 2 paired with a busway splice 3a, 3b is connected to said busway splice 3a, 3b, a conductive tab on the splice device 2 is inserted into the gap 300 and the conductive tab inserted into the gap 300 is in simultaneous electrical contact with adjacent two conductors 310, 320 spaced from each other by the gap 300.

In another example, contacts 30a, 30b, 30c may include three conductors 310, 320, 330, while contacts 30d, 30e may include two conductors. The contactors 30a, 30b, 30c are respectively used for a first phase, a second phase, and a third phase of the three-phase circuit, and the contactors 30d, 30e are respectively used for a ground line and a zero line.

As shown in fig. 2, the length of the plurality of conductors 310, 320 in a contact may be the same. The length of the plurality of conductors 310, 320 in a contactor may also be different in one embodiment according to the present disclosure. The total contact area of the conductors 310, 320 with the respective conductive tabs of the header assembly 2 can be controlled by the length of the conductors 310, 320.

Compared with the traditional mode, the bus duct joint of the disclosure increases the number of conductors in each contactor, so that the mutual contact area is increased when the bus duct joint is matched with the conductive connecting sheet of the joint device, and the heat generated by the current flowing through the conductors can be reduced.

The contact area between the conductor of the contactor of the busway joint and the conductive connecting sheet of the joint device can be increased by forming the conductor of the contactor of the busway joint into a flat conductor plate. The substantially flat conductor plate design allows for an increased contact area. Other shapes of the conductor are possible, for example, one or both sides of the conductor may also be sloped, and such a conductor may be shaped like a "wedge". When the contact arrangement comprises a conductive connecting piece which can engage with the ramp, the size of the contact area of the individual contacts of the contact with the contact arrangement can be increased by the design of at least two conductors per contact. In addition, other shapes of conductors are possible, and additional shape designs of these conductors are also contemplated within the scope of the present disclosure.

Preferably, the at least two conductors 310, 320, 330 of the at least one contact extend parallel to each other. This has the benefit of enabling the busway nipples 3a, 3b to be conveniently aligned with the nipple device 2 to improve the efficiency of assembly. Alternatively, at least two contacts 30a, 30b, 30c, 30d, 30e may be arranged in parallel alignment along the alignment direction of at least two conductors 310, 320, 330 in the contacts to facilitate assembly of the junction device to a busway junction.

Fig. 3 and 4 show an example of the joint device 2. Fig. 3 is a perspective view of the joint device of fig. 1. Fig. 4 is an exploded view of the splice device of fig. 1. As shown in fig. 3 and 4, the connector device comprises a plurality of spacers 21, 22, 23, 24, 25 and at least two sets of conductive connection pads 4, 5, 6. Sleeves 28 are provided on either side of each partition. An opening 430 is provided in the middle of each conductive tab in each set of conductive tabs. The openings 430 in the conductive tabs extend through the sleeves 28 on adjacent ones of the separators, and each set of conductive tabs is located between each adjacent two of the at least three separators so as to be separated from each other by the at least three separators, and each set of said conductive tabs 4, 5, 6 includes at least three conductive tabs 41, 42, 43 in a stack; 51. 52, 53; 61. 62, 63. In one example, the at least three conductive connecting tabs 41, 42, 43 may overlap or partially overlap each other when the header assembly 2 is not establishing an electrical connection with the busway header 3 a.

In one example, the arrangement of the joint means shown in fig. 4 may be employed. The joint arrangement comprises a mounting assembly comprising two mounting plates 11 and fasteners 12, and optionally a backing plate 13. Two mounting plates 11 are provided at the ends of the joint arrangement, respectively. The connector device further comprises a plurality of spacers 21, 22, 23, 24 and sets of conductive connection pads 4, 5, 6 between two adjacent spacers.

As shown in fig. 3, the mounting assembly may secure the plurality of separator plates and the plurality of sets of conductive tabs in position relative to one another along the length of the fastener 12.

The assembly process of the splice device 2 and the process of electrically connecting the splice device to the busway splice are described below in conjunction with fig. 4. First each set of conductive tabs 4, 5, 6 is placed between two adjacent spacer plates, whereafter the mounting plate 11 and the optional spacer 13 are placed on both sides of the joint arrangement and the fasteners 12 are passed through the optional spacer 13, the mounting plate 11, the spacer plate 21, the set of conductive tabs 4, the spacer plate 22, \8230, the set of conductive tabs 6, the spacer plate 24, \8230, the mounting plate 11, the optional spacer plate 13 in turn, whereafter the fasteners 12 are pre-tightened so that each set of conductive tabs 4, 5, 6 is held in place relative to each spacer plate 21, 22, 23, 24 to obtain the joint arrangement 2 as shown in fig. 3.

Next, the gap 400 between adjacent two conductive tabs 41, 43 in a set of conductive tabs 4 is adjusted so that it is large enough to accommodate the conductor 310 of a certain contactor of the busway junction 3a, 3 b. After inserting the plurality of conductors 310 of a certain contactor into the corresponding gaps between two adjacent conductive connecting pieces, further screwing the fasteners 12 to apply stress to the partition plates 21, 22, 23, 24 and each set of conductive connecting pieces 4, 5, 6, so that the conductive connecting pieces 41, 42, 43 in each set of conductive connecting pieces 4, 5, 6; 51. 52, 53; 61. 62, 63 are pinched off from the conductors 310, 320, 330 of the contactor of the busway joint interposed between the conductive tabs so that both sides of each conductor 310, 320, 330 of the contactor are in intimate contact and conductively connected with the conductive tabs, as shown in fig. 6A.

Furthermore, as shown in fig. 4, the mounting plate 11 may act as a spacer near the end of the splice device. It should be noted that although different reference numerals are used herein to describe other components in fig. 4, this is merely to aid in better understanding and those skilled in the art will recognize that these components may also be designed with the same or similar structures. Additionally, the joint arrangement according to fig. 4 may also comprise further components.

Fig. 5 shows the bus duct junction 3a according to fig. 2 and the junction device 2 according to fig. 3, 4 in an electrically connected state. As shown in fig. 5, in use, the plurality of conductive connection tabs 41, 42, 43 of each set of conductive connection tabs of the connector device 2 are interleaved with the plurality of conductors of a contact of a mating busway connector 3a such that the plurality of conductive connection tabs 41, 42, 43 can form a plurality of conductive path branches (generally indicated as 100 in fig. 5) with the plurality of conductors 310, 320 of each contact 30a, 30b, 30c, 30d, 30e of the busway connector.

Fig. 6A shows a schematic diagram of the conductive path branch 100 of fig. 5. In one embodiment, as shown in fig. 6A, the conductors 310, 320 of the contacts of the busway joint are inserted between the conductive connection pads 41, 43 and the conductive connection pads 42, 43, respectively, such that a first side of the conductor 310 is in contact with the conductive connection pad 41 and a second side of the conductor 310 is in contact with the conductive connection pad 43, a first side of the conductor 320 is in contact with the conductive connection pad 42 and a second side of the conductor 320 is in contact with the conductive connection pad 43. In other words, the conductive connection tab 43 disposed between the conductive connection tabs 41, 42 is capable of making simultaneous conductive contact with both conductors 310, 320 of the busway joint's contactor. Thus, a conductive path from the conductor 310 of the first bus duct to the conductor 310' of the second bus duct via conductive tabs 41 and 43 forms a first branch of the conductive path from the first bus duct to the second bus duct; the conductive path from the conductor 320 of the first bus duct to the conductor 320' of the second bus duct via conductive tabs 43 and 42 forms a second branch of the conductive path from the first bus duct to the second bus duct. Thus, by utilizing the busway nipples and nipping devices of the present disclosure, a plurality of conductive path branches can be provided for each path, as compared to conventional busway nipples and nipping devices. This in turn can reduce the heat generated by the current flowing through the junction device by increasing the total contact area of the busway junction with the junction device. In addition, the arrangement mode can increase the heat dissipation area of the conductor, and can also reduce the size requirement and the installation space requirement of the bus duct joint.

In further embodiments, the number of conductors of the contacts of the busway junction may be three or more. Correspondingly, the number of conductive connection pads in each set of conductive connection pads of the joint arrangement may also be four or more. Fig. 6B shows a schematic diagram including three branches of conductive paths according to a variation of the busway shown in fig. 1. In such busway junction examples, each contact of a busway junction may include three conductors. Correspondingly, the number of the conductive connecting sheets in each group of the conductive connecting sheets of the connector device matched with the bus duct connector is four. When the junction device is electrically connected to a busway junction, as shown in fig. 6B, conductor 310 is in simultaneous contact with conductive connection tab 41 and conductive connection tab 43, conductor 320 is in simultaneous contact with conductive connection tab 42 and conductive connection tab 43, and conductor 330 is in simultaneous contact with two conductive connection tabs 43, thereby forming the three illustrated branches of the conductive path.

Fig. 7A shows the bulkheads 21, 22 of the joint arrangement according to the present disclosure. As shown in fig. 7A, in one example, the baffles 21, 22 include a first sleeve 210 and a second sleeve 220. The first sleeve 210 is disposed on a first side of the bulkhead. The second sleeve 220 is arranged on a second side of the partition 21, 22 opposite to the first side. The outer diameter R2 of the second sleeve 220 is smaller than the inner diameter R1 of the first sleeve 210, and the outer cross-sectional shape of the second sleeve 220 is complementary to the inner cross-sectional shape of the first sleeve 210. In use, the second sleeve 220 of the partition 21 is in insertion engagement with the first sleeve 210 of the partition 22. In this way, simple assembly of the respective partition plates 21, 22 can be achieved, and the front and back sides of the partition plates can be prevented from being reversed when the partition plates 21, 22 are installed.

Fig. 7B shows one spacer and one conductive tab of a header assembly according to the present disclosure. As shown in fig. 7B, the opening 430 of the conductive tab 42 is sized to be larger than the outer diameter of the first sleeve 210. During assembly, the first sleeve 210 and the second sleeve 220 are inserted through the opening 410 so that the conductive tabs 42 can be placed over the separator plate 22. The design benefits of the opening 430 in the conductive tab 42 are: when the conductive connecting piece is assembled on the partition boards, as shown in fig. 7A and 7B, the conductive connecting piece 42 can be hung on the first sleeve 210 and the second sleeve 220 by the insertion fit of the corresponding first sleeve 210 and second sleeve 220 of the adjacent two partition boards, so that the conductive connecting piece 42 is prevented from sliding off the partition boards. This provides for a convenient assembly of the joint arrangement 2.

Additionally or alternatively, in one embodiment, the cross-sectional shape of the inner cross-section of the first sleeve 210 is non-circular and the outer cross-section of the second sleeve 220 has a non-circular cross-sectional shape that is complementary to the cross-sectional shape of the inner cross-section of the first sleeve. The first and second sleeves may prevent rotation of the second sleeve relative to the first sleeve by cooperation of the non-circular cross-sections.

The non-circular cross-sectional shape may be classified into a regular polygon and a non-regular figure. The regular polygon may include: hexagonal, quadrangular or pentagonal. Other polygons are also possible. The irregular graphical design of the cross-sectional shape can also be achieved by providing protrusions or recesses on the inner side of the first sleeve, respectively on the outer side of the second sleeve.

Additionally or alternatively, as shown in fig. 7B, the first sleeve of the baffle may also include a fool-proof mechanism. The fool-proofing structure is shown in fig. 7B as a protrusion 211 extending outwardly from the outer side of the first sleeve 210. And the edges of the opening 430 of the conductive tab 42 are provided with corresponding indentations 431. In use, the conductive tab 42 passes through the first sleeve 210 and the notch 431 in the edge of the opening 430 engages the protrusion 211 of the first sleeve 210. This enables the protrusion 211 on the outside of the first sleeve to be received through the notch 431 in the edge of the aperture 430. This arrangement also ensures a desired orientation of the conductive tabs 42 along the length of the separator plate 22 when the conductive tabs 42 are assembled onto the separator plate 22, thereby providing a foolproof effect during assembly. In addition, the fool-proof structure also prevents relative rotation between the conductive tab 42 and the separator 22. Alternatively, corresponding protrusions may be provided at the edge of the opening 430 and corresponding indentations may be provided on the outside of the first sleeve 210 to provide the same fool-proofing effect. The assembly process of the joint device designed using the structure of fig. 7A and 7B will be described with reference to fig. 4. First, each set of conductive tabs 4, 5, 6 is placed over the first sleeve 210 in two adjacent separator plates, with the opening 430 in the middle of the conductive tabs penetrated by the first sleeve 210. One of the first and second sleeves of each partition is then inserted into engagement with the other of the first and second sleeves of an adjacent partition. Subsequently, the first two steps are repeated to connect a plurality of spacers 21, 22, 23, 24, 25 and a plurality of sets of conductive connection pads 4, 5, 6 in series. Again, the mounting plate 11 and optional spacer 13 are placed on either side of the header assembly and the fasteners 12 are passed sequentially through the optional spacer 13, the mounting plate 11, the spacer 21, the set of conductive tabs 4, the spacer 22, \ 8230;, the set of conductive tabs 6, the spacer 24, \ 8230;, the mounting plate 11, the optional spacer 13, and then the fasteners 12 are pre-tightened so that each set of conductive tabs 4, 5, 6 is held in place relative to each spacer 21, 22, 23, 24.

The present junction device 2 is then connected to the busway junctions 3a, 3b by employing the embodiments described above in connection with figures 4, 5, which describe how an electrical connection is established between the junction device 2 and the busway junctions 3a, 3b, and such that the conductors 310, 320 of the contacts of the busway junctions are clamped by the conductive connecting tabs 41, 42, 43 of the junction device 2.

In one embodiment, the distance between two adjacent partition plates can be adjusted through the overall height of the first sleeve and the second sleeve. In this case, the distance between the adjacent two partitions is adjusted by applying stress to press the first sleeve and the second sleeve to be slightly deformed in the length direction. This arrangement also enables the conductors 310, 320, 330 of the contacts of the busway nipples 3a, 3b to be clamped by the conductive connecting tabs of the nipple device 2.

In one embodiment according to the present disclosure, as shown in fig. 7B, a protrusion 410 may also be provided on one of the adjacent two conductive connection tabs. The protrusion 410 may abut the other of the two adjacent conductive connection pads to form a predetermined gap 400 between the two adjacent conductive connection pads as shown in fig. 3. This predetermined gap 400 facilitates insertion of the conductors of the contacts of the busway junction between two adjacent conductive connection tabs of the junction device, thereby increasing the efficiency of establishing an electrical connection between the junction device and the busway junction.

Alternatively, in another example, the protrusion 410 is provided on both of the adjacent two conductive connection tabs. The protrusion 410 disposed on one of the adjacent two conductive connection pads interfaces with the protrusion disposed on the other of the adjacent two conductive connection pads to form a predetermined gap 400 between the adjacent two conductive connection pads.

Those skilled in the art will understand that: the foregoing description is provided for the purpose of illustration and not limitation. It will be apparent to one skilled in the art that the present disclosure may be practiced in other implementations that depart from these specific details. Moreover, unnecessary detail of known functions and structures may be omitted from the current description so as not to obscure the present disclosure.

Although specific embodiments have been illustrated and described herein, those of ordinary skill in the art appreciate that any arrangement which is calculated to achieve the same purpose may be substituted for the specific embodiments shown and that the disclosure has other applications in other environments. This application is intended to cover any adaptations or variations of the present disclosure. The following claims should in no way be construed to limit the scope of the disclosure to the specific embodiments described herein.

Claims (12)

1. A busway junction (3 a, 3 b), comprising:

at least two contacts (30 a, 30b, 30c, 30d, 30 e), each said contact comprising a conductor (310, 320, 330);

wherein at least one of the at least two contacts comprises at least two conductors (310, 320, 330);

wherein each adjacent two of the at least two conductors are spaced apart from each other by a gap (300), and the gap (300) is configured such that when a joint device (2) paired with the joint (3 a, 3 b) is connected to the joint (3 a, 3 b), a conductor on the joint device (2) is inserted into the gap (300) and a conductor inserted into the gap (300) is in simultaneous electrical contact with the adjacent two conductors (310, 320, 330) spaced apart from each other by the gap (300).

2. A busway joint (3 a, 3 b) according to claim 1, wherein at least two conductors (310, 320, 330) of said at least one contactor extend parallel to each other.

3. A busway joint (3 a, 3 b) according to claim 2, wherein each of the at least two conductors (310, 320, 330) of the at least one contactor is a flat conductor plate.

4. A busway joint (3 a, 3 b) according to any of claims 1-3, wherein said at least two contactors (30 a, 30b, 30c, 30d, 30 e) are arranged in parallel along the direction of arrangement of at least two conductors (310, 320, 330) in said contactors.

5. A bus duct (1), characterized in that it comprises a bus duct junction (3 a, 3 b) according to any of claims 1-4.

6. The bus duct (1) of claim 5,

further comprising a housing (20);

at least two busbars housed in the casing (20);

wherein the busway joint (3 a, 3 b) is provided at least one end of the housing (20), and a conductor of each of at least two contacts (30 a, 30b, 30c, 30d, 30 e) of the busway joint (3 a, 3 b) is electrically connected with a corresponding one of the at least two busbars.

7. A junction device (2) for a bus duct (1), comprising:

at least three partitions (21, 22, 23, 24, 25);

at least two sets of conductive connection tabs (4, 5, 6), each set of conductive connection tabs being located between each adjacent two of the at least three separator plates to be isolated from each other by the at least three separator plates, and each set of conductive connection tabs (4, 5, 6) comprising at least three conductive connection tabs (41, 42, 43, 51, 52, 53.

8. The junction device (2) according to claim 7, characterized in that the at least three conductive connection tabs (41, 42, 43, 51, 52, 53, 61, 62, 63) of each set of conductive connection tabs (4, 5, 6) are configured such that, when the junction device (2) is in mating connection with a busway junction (3 a, 3 b) according to any one of claims 1-4, each two adjacent conductive connection tabs (41, 42, 43, 51, 52, 53, 61, 62, 63) grip one conductor (310, 320, 330) of at least one contact of the busway junction (3 a, 3 b).

9. A joint arrangement (2) according to claim 7, characterized in that each of the at least three diaphragms (21, 22, 23, 24, 25) is provided with a first sleeve (210) at a first side and a second sleeve (220) at a second side opposite to the first side, and that the outer cross section of the second sleeve (220) is complementary to the cross sectional shape of the inner cross section of the first sleeve (210).

10. A connector device (2) according to claim 9, wherein the cross-sectional shape of the inner cross-section of the first sleeve (210) and the outer cross-section of the second sleeve (220) is non-circular.

11. A connector device (2) according to any one of claims 9-10, wherein one of the first and second sleeves (210, 220) of each of the at least three partition plates (21, 22, 23, 24, 25) is insert fitted with the other one of the first and second sleeves (210, 220) of an adjacent partition plate,

and the conductive connecting sheets (41, 42, 43, 51, 52, 53, 61, 62, 63) are provided with openings (430) in the middle, and the openings (430) of the conductive connecting sheets (41, 42, 43, 51, 52, 53, 61, 62, 63) penetrate through the first sleeve (210) and the second sleeve (220) of the two adjacent partition boards.

12. A connector device (2) according to claim 11, wherein the first sleeve (210) comprises a protrusion (211) or an indentation extending outwardly from an outer side of the first sleeve, and

the edge of the opening (430) in the middle of the conductive connecting sheets (41, 42, 43, 51, 52, 53, 61, 62, 63) is provided with a notch (431) or a protrusion, so that when the conductive connecting sheets (41, 42, 43, 51, 52, 53, 61, 62, 63) pass through the first sleeve (210), the notch (431) on the edge of the opening (430) is matched with the protrusion (211) of the first sleeve, or the protrusion on the edge of the opening (430) is matched with the notch of the first sleeve.

Images