A busbar overlap structure and copper busbar arrangement structure

Abstract

The present invention discloses a busbar splicing structure and a copper busbar arrangement structure. The busbar splicing structure includes busbars, which are arranged in pairs and at least one pair is arranged along the length direction; a splicing busbar, including at least two parallel single busbars, and located between the busbars arranged in pairs; the busbar is provided with a splicing bar, and the same-oriented surfaces of adjacent single busbars are connected to the splicing bars from different busbars; the busbar device adopts a symmetrical design and a staggered splicing method, which can ensure that the maximum feeder current in the single-side front feeder chamber can reach 4000A and the temperature rise is low.

Description

Technical Field

[0001] The present invention relates to the field of switch cabinets, and in particular to a busbar overlapping structure and a copper bar arrangement structure. Background Art

[0002] In low-voltage switchgear, the connection between busbars and branching busbars is a crucial component of power systems. Traditionally, this connection involves directly creating holes between the horizontal busbars and branching busbars. While simple, this direct connection method has some significant drawbacks in practical applications.

[0003] When the switchgear is under rated load, the horizontal busbar carries a large rated current. Due to the excessive number of openings on the horizontal busbar, the current-carrying conductors of the horizontal busbar will overheat at the joints, accompanied by certain eddy current hazards. This can easily cause the horizontal busbar temperature to rise too high, reducing its current-carrying capacity, thereby causing the system to not operate normally or even the entire electrical system to be paralyzed. Summary of the Invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the invention of this application to avoid blurring the purpose of this section, the abstract of the specification and the title of the invention, and such simplifications or omissions cannot be used to limit the scope of the invention.

[0005] In view of the above problems and / or the problems existing in the prior art, the present invention is proposed.

[0006] Therefore, the technical problem to be solved by the present invention is that the current carrying capacity is too low and the busbar temperature rise is too high.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: A busbar splicing structure, comprising: busbars arranged in pairs, with at least one pair arranged along the length direction;

[0008] The overlapping busbar comprises at least two parallel single busbars and is located between the busbars arranged in pairs;

[0009] The busbar is provided with a lap joint, and the same-facing surfaces of adjacent single busbars are connected to the lap joints from different busbars.

[0010] As a preferred solution of the busbar lap joint structure described in the present invention, the lap joint row includes a pile head row and a transition row, one end of the pile head row is connected to the busbar, and the other end is connected to the transition row, and the same facing surfaces of adjacent single busbars are connected to transition rows from different busbars.

[0011] As a preferred solution of the busbar overlap structure of the present invention, both sides of the pile head row away from one end of the busbar are connected to the transition row.

[0012] As a preferred solution of the busbar overlap structure of the present invention, wherein: the single busbars are arranged in parallel, one side surface of the single busbar is the overlap surface, and the overlap surface of the single busbar is connected to the transition bar.

[0013] As a preferred solution of the busbar splicing structure of the present invention, the busbar includes three-phase splicing bars, three groups of splicing bars are provided, and the three groups of splicing bars are respectively connected to the three-phase splicing bars.

[0014] As a preferred solution of the busbar overlap structure of the present invention, the busbars arranged in pairs are provided in two pairs along the length direction, and the two pairs of busbars are symmetrically arranged.

[0015] The present invention also provides the following technical solution: a copper busbar arrangement structure, comprising the above-mentioned busbar overlap structure, further comprising:

[0016] The incoming busbar, the circuit breaker, and the horizontal busbar are connected in sequence, and the horizontal busbar is connected to the busbar.

[0017] As a preferred solution of the copper busbar arrangement structure of the present invention, the horizontal busbar includes a plurality of horizontal single rows, the number of the horizontal single rows is the same as that of the single busbars and they are staggered and connected.

[0018] The beneficial effects of the present invention are as follows: The busbar assembly adopts a symmetrical design and staggered overlap method, which can ensure that the maximum feeder current in the single-side front feeder room can reach 4000A. The main incoming current is divided into four groups of busbar assemblies through the incoming line horizontal busbar, feeder horizontal busbar, and feeder vertical busbar. The maximum carrying current of each busbar assembly can reach 2000A, and the modular adapter can reach 36P. The maximum feeder current in the single-side front feeder room can reach 4000A, and the modular adapter can reach 72P. The maximum feeder current in the double-side front and rear feeder room can reach 8000A, and the modular adapter can reach 144P. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort. Among them:

[0020] Figure 1 A schematic diagram of a busbar connection structure according to an embodiment of the present invention;

[0021] Figure 2 A schematic structural diagram of a splice row in a busbar splice structure according to an embodiment of the present invention;

[0022] Figure 3 A schematic structural diagram of a three-phase overlap in a busbar overlap structure according to an embodiment of the present invention;

[0023] Figure 4 A schematic structural diagram of a busbar overlap in a busbar overlap structure according to an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the staggered overlap structure of the busbar overlap structure according to an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of the three-dimensional structure of a busbar overlapping structure according to an embodiment of the present invention;

[0026] Figure 7 A schematic diagram of a four-group busbar connection structure according to an embodiment of the present invention;

[0027] Figure 8 A schematic diagram of a copper busbar arrangement structure according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, these schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0031] Furthermore, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0032] Example 1

[0033] Reference Figure 1 This embodiment provides a busbar busbar splicing structure, including a busbar busbar 100 and a splicing busbar 200; in this embodiment, the splicing busbar 200 is provided with three phases (A, B, C), and the busbar busbar 100 is also provided with three phases (A, B, C), and each phase of the busbar busbar 100 is connected to the corresponding splicing busbar 200.

[0034] The busbars 100 are arranged in pairs and at least one pair is arranged along the length direction. In this embodiment, two pairs, that is, four busbars 100 are arranged, which are collinear and symmetrical.

[0035] The lap busbar 200 is arranged in the low-voltage switch cabinet and along the length direction of the busbar 100 . It includes at least two parallel single busbars 201 and is located between the busbars 100 arranged in pairs.

[0036] The busbar 100 is provided with a lap bar 101, and the lap bar 101 is provided with 3 phases. The 3-phase lap bar 101 is connected to the 3-phase lap busbar 200, and the same-oriented surfaces of adjacent single busbars 201 are connected to the lap bars 101 from different busbars 100, that is, staggered laps, to avoid the lap bars 101 of the same busbar 100 being lapped to the same single busbar 201, causing heat and temperature increase.

[0037] Example 2

[0038] Reference Figures 2 to 7 , which is the second embodiment of the present invention, is based on the previous embodiment and differs from the previous embodiment in that:

[0039] The lap bar 101 includes a pile head bar 101a and a transition bar 101b. One end of the pile head bar 101a is connected to the busbar 100, and the other end is connected to the transition bar 101b. The same-facing surfaces of adjacent single busbars 201 are connected to transition bars 101b from different busbars 100.

[0040] Combined with attachment Figure 2 , it can be understood that the pile head row 101a and the transition row 101b are the same copper row or the pile head row 101a is only connected to one transition row 101b;

[0041] Combined with attachment Figures 3-5It can be understood that one pile head bar 101a can be connected to two transition bars 101b, that is, both sides of the pile head bar 101a away from the busbar 100 are connected to transition bars 101b. Therefore, the three-phase bonding bar 101 has a total of six transition bars 101b, which are respectively bonded to the three-phase bonding busbars 200. Therefore, each phase bonding busbar 200 needs to be bonded to four transition bars 101b, one from each of the pile head bars 101a on the two opposing busbars 100.

[0042] Furthermore, four single busbars 201 are arranged in parallel, and one side surface of the single busbar 201 is set as the overlapping surface, that is, there are four overlapping surfaces in total and the overlapping surfaces are oriented in the same direction. The overlapping surfaces of the single busbar 201 are connected to the transition bar 101b.

[0043] Furthermore, the busbar 100 includes a three-phase bonding bar 101 , and three groups of bonding busbars 200 are correspondingly provided. The three groups of bonding busbars 200 are respectively connected to the three-phase bonding bar 101 .

[0044] Combined with attachment Figures 3 to 6 Taking phase B as an example, the single busbars 201 are numbered 1, 2, 3, and 4 from left to right, and the right side of the single busbar 201 is the overlapped surface. Then, one overlap method is: the B-phase transition bar 101b of the left busbar 100 is overlapped to the single busbars 201 1 and 3, and the B-phase transition bar 101b of the right busbar 100 is overlapped to the single busbars 201 2 and 4, that is, the same-oriented surfaces of adjacent single busbars 201 are connected to the transition bars 101b from different busbars 100.

[0045] It is understood that, in one embodiment, reference Figure 7 The low-voltage switchgear is arranged with four busbars. Two pairs of busbars 100 are arranged in pairs along the length direction. The two pairs of busbars 100 are symmetrically arranged and distributed on both sides of the low-voltage switchgear.

[0046] The overlapping method in this embodiment can ensure that the maximum feeder current in the single-side front feeder room can reach 4000A; the maximum carrying current of each busbar device can reach 2000A (the theoretical current of this scheme can reach 8000A, but the rated current of the current circuit breaker on the market is only 7600A).

[0047] Example 3

[0048] Reference Figure 8 , which is the third embodiment of the present invention. This embodiment is based on the previous embodiment, and differs from the previous embodiment in that: this embodiment provides a copper busbar arrangement structure located in a low-voltage switchgear, including an incoming busbar 300, a circuit breaker 400, and a horizontal busbar 500 connected in sequence, and the horizontal busbar 500 is connected to the busbar 100.

[0049] Combined with attachment Figure 8It can be understood that the horizontal busbar 500 includes several horizontal single rows 501, and the number of horizontal single rows 501 is the same as that of the single busbar 201 and they are staggered. Therefore, the single-phase incoming busbar 300 and the horizontal busbar 500 are both composed of 4 parallel single rows, and the overlap method of the same-phase components is staggered overlap.

[0050] Among them, the circuit breaker current capacity is 4000A, and the maximum can reach 7600A. The theoretical current of this solution can reach 8000A, but the rated current of the circuit breaker currently on the market is only 7600A.

[0051] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0052] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0053] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A busbar splicing structure, characterized in that: include, Busbars (100) are arranged in pairs, with at least one pair arranged along the length direction; The overlapping busbar (200) comprises at least two parallel single busbars (201) and is located between the busbars (100) arranged in pairs; The busbar (100) is provided with a splice bar (101), and the same-facing surfaces of adjacent single busbars (201) are connected to the splice bars (101) from different busbars (100); The lap bar (101) comprises a pile head bar (101a) and a transition bar (101b); one end of the pile head bar (101a) is connected to the busbar (100), and the other end is connected to the transition bar (101b); the same-facing surfaces of adjacent single busbars (201) are connected to transition bars (101b) from different busbars (100); Four single busbars (201) are arranged in parallel, one side surface of the single busbar (201) is a lap joint surface, and the lap joint surface of the single busbar (201) is connected to the transition bar (101b).

2. The busbar splicing structure according to claim 1, wherein: Both sides of the pile head row (101a) away from one end of the busbar (100) are connected to the transition row (101b).

3. The busbar splicing structure according to claim 1 or 2, characterized in that: The busbar (100) includes a three-phase lap bar (101), and three groups of lap busbars (200) are correspondingly provided. The three groups of lap busbars (200) are respectively connected to the three-phase lap bars (101).

4. The busbar splicing structure according to claim 3, wherein: The busbars (100) arranged in pairs are arranged in two pairs along the length direction, and the two pairs of busbars (100) are symmetrically arranged.

5. A copper busbar arrangement structure, characterized in that: The busbar splicing structure according to any one of claims 1 to 4 further comprises: The incoming busbar (300), the circuit breaker (400), and the horizontal busbar (500) are connected in sequence, and the horizontal busbar (500) is connected to the busbar (100).

6. The copper busbar arrangement structure according to claim 5, characterized in that: The horizontal busbar (500) includes a plurality of horizontal single rows (501), the number of the horizontal single rows (501) being the same as that of the single busbar (201) and being staggeredly connected.

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