Bus duct connecting flange

Abstract

The utility model discloses a bus duct connecting flange, comprising an upper cover which comprises an upper cover body and a plurality of upper side plates fixed on the upper cover body, and an upper accommodating groove used for accommodating a copper bar is formed between two adjacent upper side plates and the upper cover body; the lower cover and the upper cover are buckled together in the vertical direction, the lower cover comprises a lower cover body and a plurality of lower side plates fixed on the lower cover body, a lower accommodating groove for accommodating a copper bar is formed between every two adjacent lower side plates, and the lower accommodating grooves correspond to the upper accommodating grooves in the vertical direction; the lower side plate and the upper side plate are partially overlapped in the horizontal direction; and the copper bars are arranged in the upper accommodating groove and the lower accommodating groove corresponding to the upper accommodating groove. The upper cover and the lower cover of the bus duct connecting flange are mutually buckled together, so that the copper bars do not need to be wrapped in an insulating manner, the tight structure plays a very safe electrical isolation role between phases, and the electrical reliability and the safety of the product are sufficiently ensured.

Description

Technical Field

[0001] The utility model belongs to the field of bus ducts, and in particular relates to a bus duct connecting flange. Background Art

[0002] Driven by technologies like big data and cloud computing, the data center industry is rapidly developing towards energy efficiency and large-scale development. This trend places higher demands on the flexibility, reliability, and cost-effectiveness of power distribution systems. In particular, flexible mini-busbars are an effective solution for data center power distribution, adapting to the growing power and monitoring demands of data centers.

[0003] In existing technology, busbar duct connection flanges play a crucial role, connecting various parts of the entire power distribution system. Traditionally, busbar duct manufacturers typically use an air-type design, where the outer shell is designed with large slots, the conductive copper bars inside are arranged side by side, and insulating supports are provided at the ends to secure the copper bars and limit their spacing. Although this design leaves ample space between the copper bars and between the copper bars and the outer shell, the outer shell must be as compact as possible, and the distance between the upper and lower surfaces of the copper bars and the outer shell is very small. Therefore, the copper bars need to be wrapped with multiple layers of insulating film and the ends must be wrapped with insulating tape. This design results in a lack of air flow inside the flange, which easily accumulates heat and causes a relatively high temperature rise. In addition, when the copper bars are wrapped with film and tape and placed into the slots of the insulating supports, there is a risk of scratching the insulation layer. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a bus duct connecting flange which can significantly improve the safety and stability of power distribution.

[0005] In order to solve the above technical problems, the technical solutions provided by the present invention are as follows:

[0006] A bus duct connecting flange, comprising:

[0007] The upper cover comprises an upper cover body and a plurality of upper side plates fixed on the upper cover body, wherein an upper receiving groove for receiving the copper busbar is formed between two adjacent upper side plates and the upper cover body;

[0008] A lower cover fastened to the upper cover in the vertical direction, the lower cover comprising a lower cover body and a plurality of lower side plates fixed to the lower cover body, a lower receiving groove for accommodating a copper busbar being formed between two adjacent lower side plates, the lower receiving groove corresponding to the upper receiving groove in the vertical direction; the lower side plates partially overlapping the upper side plates in the horizontal direction;

[0009] The copper busbar is installed in the upper accommodating groove and the corresponding lower accommodating groove.

[0010] Furthermore, an upper boss is provided on the upper side plate, and the free end of the lower side plate is arranged to abut against the upper boss.

[0011] Furthermore, the upper side plate includes a first upper sub-side plate and a second upper sub-side plate, the upper boss is arranged between the first upper sub-side plate and the second upper sub-side plate, and the second upper sub-side plate is staggered relative to the first upper sub-side plate in the horizontal direction away from the upper accommodating groove.

[0012] Furthermore, the upper cover also includes a first outer wall and a second outer wall arranged at intervals, and the first outer wall and the second outer wall are fixed on the upper cover body; the lower cover also includes a third outer wall and a fourth outer wall arranged at intervals, and the third outer wall and the fourth outer wall are fixed on the lower cover body; the first outer wall, the third outer wall, the second outer wall and the fourth outer wall are partially overlapped in the horizontal direction.

[0013] Furthermore, an upper groove is formed between the first outer wall and the second outer wall; a lower groove is formed between the third outer wall and the fourth outer wall; the third outer wall is inserted into the upper groove, and the second outer wall is inserted into the lower groove.

[0014] Furthermore, the lower cover further includes a lower boss, which is arranged on the outer side of the bottom of the third outer wall, and the free end of the first outer wall is arranged to abut against the lower boss.

[0015] Furthermore, the upper cover further includes an upper rib, which is installed in the upper accommodating groove and extends from the upper cover body toward the lower cover.

[0016] Furthermore, the lower cover further includes a lower rib, which is installed in the lower accommodating groove and extends from the lower cover body toward the upper cover.

[0017] Furthermore, it also includes an end cover sealing gasket, an insulating end cover and a ring end cover sealing strip, and the end cover sealing gasket, insulating end cover and ring end cover sealing strip are sleeved on one end of the upper cover and the lower cover.

[0018] Furthermore, it also includes a flange sealing frame, which is sleeved on the other end of the upper cover and the lower cover.

[0019] Beneficial effects of the utility model:

[0020] The upper and lower covers of the bus duct connection flange are buckled together, eliminating the need for insulation wrapping of the copper busbar. The tight structure provides very safe electrical isolation between each phase, ensuring sufficient electrical reliability and safety of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1This is a schematic diagram of the connection structure between the bus duct connection flange and the circuit breaker of the utility model;

[0022] Figure 2 This is an exploded view of a bus duct connection flange according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the upper cover of the utility model in one embodiment;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the lower cover of the utility model in one embodiment;

[0025] Figure 5 This is a side sectional view of a bus duct connecting flange in one embodiment of the present invention.

[0026] Reference numerals include:

[0027] 10—busbar duct connection flange 100—upper cover 110—upper accommodating groove

[0028] 120—upper rib 130—upper side plate 131—first upper sub-side plate

[0029] 132 - second upper side plate 140 - upper boss 150 - first outer wall

[0030] 160—Second outer wall 170—Upper groove 180—Upper cover body

[0031] 190—upper reinforcement 191—upper stud 200—lower cover

[0032] 210—lower accommodating groove 220—lower rib 230—lower side plate

[0033] 240—third outer wall 250—fourth outer wall 260—lower groove

[0034] 270—lower boss 280—lower cover body 290—lower reinforcement rib

[0035] 291—Lower stud 300—Flange top plate 400—Flange bottom plate

[0036] 600—Copper busbar 700—Insulation end cap 810—Flange sealing frame

[0037] 820—End cover gasket 830—End cover sealing strip 840—Side sealing strip

[0038] 900—Fastener 910—Nut 20—Circuit breaker DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0041] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0043] Please refer to Figure 1 and Figure 2, which is a preferred embodiment of the present utility model, the busbar connecting flange includes: an upper cover 100, including an upper cover body 180 and a plurality of upper side plates 130 fixed on the upper cover body 180, an upper accommodating groove 110 for accommodating the copper busbar 600 is formed between two adjacent upper side plates 130 and the upper cover body 180; a lower cover 200 buckled together with the upper cover 100 in the vertical direction, the lower cover 200 including a lower cover body 280 and a plurality of lower side plates 230 fixed on the lower cover body 280, a lower accommodating groove 210 for accommodating the copper busbar 600 is formed between two adjacent lower side plates 230, the lower accommodating groove 210 corresponding to the upper accommodating groove 110 in the vertical direction; the lower side plate 230 and the upper side plate 130 are partially overlapped in the horizontal direction; the copper busbar 600 is installed in the upper accommodating groove 110 and the corresponding lower accommodating groove 210. The upper cover 100 and lower cover 200 of the busbar duct connection flange interlock together, eliminating the need for insulation around the copper busbar 600. This compact structure provides highly secure electrical isolation between phases, ensuring the product's electrical reliability and safety. Each of these components is described in further detail below.

[0044] In one embodiment of the present application, Figures 1-4 As shown, the busbar connection flange primarily comprises an upper cover 100, a lower cover 200, and a copper busbar 600. Specifically, the upper and lower covers 100, 200 are manufactured using an insulating material injection molding or compression molding process. Because the upper and lower covers 100, 200 are made of insulating material, the copper busbar 600 does not require additional insulation wrapping, eliminating the risk of damaging insulating film or tape during assembly. Furthermore, the process is simple and assembly efficiency is high.

[0045] like Figure 3 and Figure 5 As shown, the upper cover 100 includes an upper cover body 180 , an upper accommodating groove 110 , an upper rib 120 , an upper side plate 130 , an upper boss 140 , a first outer wall 150 , a second outer wall 160 , an upper groove 170 , and an upper reinforcing rib 190 .

[0046] The upper cover body 180 is generally T-shaped, with multiple upper side panels 130 fixedly mounted thereon. Upper accommodating grooves 110 for accommodating the copper busbar 600 are formed between each upper side panel 130, an adjacent upper side panel 130, and the upper cover body 180. These upper accommodating grooves 110 are arranged in a tree-root-like pattern on the upper cover body 180 to accommodate and secure the copper busbar 600.

[0047] The upper rib 120 is installed in the upper accommodating groove 110 and extends from the upper cover body 180 toward the lower cover 200. When the copper busbar 600 is installed in the upper accommodating groove 110, one end thereof abuts against the upper rib 120, preventing the copper busbar 600 from directly contacting the upper cover body 180. Multiple upper reinforcing ribs 190 are connected between one upper side plate 130 and another adjacent upper side plate 130 to enhance the overall structural strength.

[0048] By providing multiple upper reinforcing ribs 190 inside the upper cover 100 and fixing the copper busbar 600 in the upper accommodating groove 110, the air space between the upper cover 100 and the copper busbar 600 is reduced. The heat generated during the operation of the copper busbar 600 will not accumulate in the air in large quantities, but will be quickly dissipated to the external air through the upper cover 100, so that the performance of the busbar connecting flange is stable and the temperature rise is low during operation.

[0049] The upper side plate 130 is provided with an upper boss 140, and the free end of the lower side plate 230 is arranged to abut against the upper boss 140. Figure 5 As shown, after the upper cover 100 and the lower cover 200 are buckled together, the free end of the lower side plate 230 is set to abut against the upper boss 140, and the upper accommodating groove 110 and the lower accommodating groove 210 are spliced ​​together to form a square enclosed space corresponding to the size and shape of the copper busbar 600.

[0050] like Figure 5 As shown, more specifically, the upper side plate 130 includes a first upper sub-side plate 131 and a second upper sub-side plate 132. The upper boss 140 is disposed between the first upper sub-side plate 131 and the second upper sub-side plate 132. The second upper sub-side plate 132 is offset relative to the first upper sub-side plate 131 in the horizontal direction away from the upper receiving groove 110, so that the first upper sub-side plate 131, the upper boss 140, and the second upper sub-side plate 132 form a U-shaped shape when connected together.

[0051] like Figure 4 and Figure 5 As shown, the lower cover 200 includes a lower accommodating groove 210 , a lower rib 220 , a lower side plate 230 , a third outer wall 240 , a fourth outer wall 250 , a lower groove 260 , a lower boss 270 , a lower cover body 280 , and a lower reinforcing rib 290 .

[0052] Similar to the upper cover body 180, the lower cover body 280 is also generally T-shaped. Multiple lower side panels 230 are fixedly mounted on the lower cover body 280. Lower accommodating grooves 210 for accommodating the copper busbar 600 are formed between a lower side panel 230, an adjacent lower side panel 230, and the lower cover body 280. The multiple lower accommodating grooves 210 are arranged in a tree-root-like pattern on the lower cover body 280 to accommodate and secure the copper busbar 600.

[0053] like Figure 4 As shown, the lower rib 220 is installed in the lower receiving groove 210 and extends from the lower cover body 280 toward the upper cover 100. When the copper busbar 600 is installed in the lower receiving groove 210, its other end abuts against the lower rib 220 to prevent the copper busbar 600 from directly contacting the lower cover body 280.

[0054] Multiple lower reinforcing ribs 290 connect one lower side panel 230 to the next adjacent lower side panel 230, enhancing overall structural strength. When the upper and lower covers 100 and 200 are assembled, the upper and lower reinforcing ribs 190 and 290 interlock, forming a labyrinthine arrangement. This ensures that the electrical clearance and creepage distances between the copper busbars 600 exceed national standards, creating perfect electrical isolation. It also allows the upper and lower covers 100 and 200 to vertically support each other, strengthening the overall structural strength after assembly.

[0055] like Figure 3 and Figure 5 As shown, the upper cover 100 further includes a first outer wall 150 and a second outer wall 160 spaced apart from each other. The first outer wall 150 and the second outer wall 160 are fixed to the upper cover body 180, and an upper groove 170 is formed between the first outer wall 150 and the second outer wall 160. Figure 4 and Figure 5As shown, the lower cover 200 further includes a third outer wall 240 and a fourth outer wall 250 spaced apart from each other. The third outer wall 240 and the fourth outer wall 250 are fixed to the lower cover body 280, and a lower groove 260 is formed between the third outer wall 240 and the fourth outer wall 250. The first outer wall 150, the third outer wall 240, the second outer wall 160, and the fourth outer wall 250 are partially overlapped in the horizontal direction, so that the third outer wall 240 is inserted into the upper groove 170 and the second outer wall 160 is inserted into the lower groove 260. The lower cover 200 further includes a lower boss 270, which is disposed on the outer side of the bottom of the third outer wall 240. The free end of the first outer wall 150 is configured to abut against the lower boss 270. The upper cover 100 and the lower cover 200 form a mutual support function in the vertical direction, thereby strengthening the overall structural strength after assembly; at the same time, the upper cover 100 and the lower cover 200 can also be positioned from the side.

[0056] In another embodiment of the present application, Figure 2 As shown, the busbar duct connection flange 10 further includes a flange top plate 300 and a flange bottom plate 400, which are fixedly mounted on the upper cover 100 and the lower cover 200, respectively. Preferably, the flange top plate 300 and the flange bottom plate 400 are made of a material with excellent thermal conductivity, such as aluminum, to ensure grounding continuity and heat dissipation from the connector end to the start box side.

[0057] like Figure 3 and Figure 4 As shown, the busbar duct connection flange 10 also includes a plurality of upper studs 191 and lower studs 291 in a one-to-one correspondence. The plurality of upper studs 191 are evenly distributed on the upper cover body 180, and the plurality of lower studs 291 are evenly distributed on the lower cover body 280. The upper studs 191 and lower studs 291 are distributed between rows rather than just along the outer edges. This prevents the product from arching during tightening, which could result in a loose copper busbar 600. Multiple long screws, such as fasteners 900, are sequentially passed through the flange top plate 300, upper cover 100, lower cover 200, and flange bottom plate 400 to secure the main components of the busbar duct connection flange 10.

[0058] like Figure 2 As shown, the copper busbar 600 is also in the shape of a tree root. The spacing between the copper busbars 600 at one end is small, just matching the installation connector; the spacing between the copper busbars 600 at the other end is large and is provided with connection holes, which can be connected to other front-end devices. After the upper cover 100, the lower cover 200 and the copper busbar 600 are assembled, a flange plane is formed at the end of the lower cover 200 with large spacing, as shown in FIG. Figure 1The flange plane is used to connect to the circuit breaker 20. Preferably, the copper busbar 600 is connected to the circuit breaker 20 by using a twisted copper busbar at the incoming end. This allows for direct connection to the molded case circuit breaker 20 without the need for welding the copper busbar or multiple overlaps to match the phase spacing of the circuit breaker 20. This structure is simple and easy to assemble, reduces the number of copper busbar overlaps, improves reliability, and helps reduce temperature rise.

[0059] In another embodiment of the present application, Figure 2 As shown, the bus duct connection flange further includes an insulating end cover 700 , a flange sealing frame 810 , an end cover sealing gasket 820 , a ring end cover sealing strip 830 and a side sealing strip 840 .

[0060] The end cap gasket 820, insulating end cap 700, and ring end cap sealing strip 830 are mounted on one end of the upper cover 100 and lower cover 200 away from the flange plane. The copper bars 600 at this end are closely spaced and aligned with the straight section of the bus duct. The end cap gasket 820 is positioned between the insulating end cap 700 and the upper cover 100 and lower cover 200, improving the sealing between the insulating end cap 700 and the upper cover 100 and lower cover 200. The ring end cap sealing strip 830 is mounted on the outer periphery of the insulating end cap 700 and the end cap gasket 820, further improving the sealing of the ends of the upper cover 100 and lower cover 200, and achieving an IP54 protection rating for the flange end of the bus duct connection. The configuration of the end cap gasket 820, insulating end cap 700, and ring end cap sealing strip 830 enables a good connection and seal with the connector.

[0061] More specifically, because the upper cover 100 and the lower cover 200 are insulated plastic parts that snap together, and the insulating end cap 700 is connected and assembled from the side of the end, an embedded nut plate 910 is installed inside the end side of the upper cover 100 and the lower cover 200. The nut plate 910 is provided with a threaded hole, and the nut plate 910 is clamped by the small cavity provided at the end of the upper cover 100 and the lower cover 200. After the upper cover 100 and the lower cover 200 are assembled and connected, only the threaded hole of the nut plate 910 is exposed, so that the insulating end cap 700 can be fastened to the upper cover 100 and the lower cover 200.

[0062] The flange sealing frame 810 is mounted on the other end of the upper cover 100 and lower cover 200, near the flange plane. The flange sealing frame 810 is preferably made of a sealing material. When the flange sealing frame 810 is secured to the flange plane and connected to the upper cover 100 and lower cover 200, the connection surface between the busbar duct flange 10 and the circuit breaker 20 is sealed and protected.

[0063] The side sealing strip 840 is assembled at the outer joint of the upper cover 100 and the lower cover 200. With this arrangement, the IP protection of the bus duct connecting flange 10 will not fail even if it is installed in a vertical state.

[0064] The above content is only a preferred embodiment of the present invention. For ordinary technicians in this field, many changes can be made in the specific implementation methods and application scope based on the concept of the present invention. As long as these changes do not deviate from the concept of the present invention, they all fall within the scope of protection of the present invention.

Claims

1. A bus duct connecting flange, characterized in that: include: The upper cover (100) comprises an upper cover body (180) and a plurality of upper side plates (130) fixed to the upper cover body (180), wherein an upper receiving groove (110) for receiving a copper busbar (600) is formed between two adjacent upper side plates (130) and the upper cover body (180); A lower cover (200) is fastened to the upper cover (100) in a vertical direction, the lower cover (200) comprising a lower cover body (280) and a plurality of lower side plates (230) fixed to the lower cover body (280), a lower receiving groove (210) for receiving a copper busbar (600) is formed between two adjacent lower side plates (230), the lower receiving groove (210) corresponding to the upper receiving groove (110) in a vertical direction; the lower side plates (230) and the upper side plates (130) are partially overlapped in a horizontal direction; The copper busbar (600) is installed in the upper receiving groove (110) and the corresponding lower receiving groove (210).

2. The bus duct connecting flange according to claim 1, characterized in that: An upper boss (140) is provided on the upper side plate (130), and a free end of the lower side plate (230) is arranged to abut against the upper boss (140).

3. The bus duct connecting flange according to claim 2, characterized in that: The upper side plate (130) includes a first upper sub-side plate (131) and a second upper sub-side plate (132), the upper boss (140) is arranged between the first upper sub-side plate (131) and the second upper sub-side plate (132), and the second upper sub-side plate (132) is staggered relative to the first upper sub-side plate (131) in a horizontal direction away from the upper accommodating groove (110).

4. The bus duct connecting flange according to claim 1, characterized in that: The upper cover (100) further includes a first outer wall (150) and a second outer wall (160) arranged at intervals, and the first outer wall (150) and the second outer wall (160) are fixed on the upper cover body (180); the lower cover (200) further includes a third outer wall (240) and a fourth outer wall (250) arranged at intervals, and the third outer wall (240) and the fourth outer wall (250) are fixed on the lower cover body (280); the first outer wall (150), the third outer wall (240), the second outer wall (160) and the fourth outer wall (250) are arranged to partially overlap in the horizontal direction.

5. The bus duct connecting flange according to claim 4, characterized in that: An upper groove (170) is formed between the first outer wall (150) and the second outer wall (160); a lower groove (260) is formed between the third outer wall (240) and the fourth outer wall (250); the third outer wall (240) is inserted into the upper groove (170), and the second outer wall (160) is inserted into the lower groove (260).

6. The bus duct connecting flange according to claim 5, characterized in that: The lower cover (200) further includes a lower boss (270), which is arranged outside the bottom of the third outer wall (240), and the free end of the first outer wall (150) is arranged to abut against the lower boss (270).

7. The bus duct connecting flange according to claim 6, characterized in that: The upper cover (100) further includes an upper rib (120), which is installed in the upper receiving groove (110) and extends from the upper cover body (180) toward the lower cover (200).

8. The bus duct connecting flange according to claim 7, characterized in that: The lower cover (200) further includes a lower rib (220), which is installed in the lower accommodating groove (210) and extends from the lower cover body (280) toward the upper cover (100).

9. The bus duct connecting flange according to any one of claims 1 to 8, characterized in that: It also includes an end cover sealing gasket (820), an insulating end cover (700) and a ring end cover sealing strip (830), wherein the end cover sealing gasket (820), the insulating end cover (700) and the ring end cover sealing strip (830) are sleeved on one end of the upper cover (100) and the lower cover (200).

10. The bus duct connecting flange according to claim 9, characterized in that: It also includes a flange sealing frame (810), which is sleeved on the other end of the upper cover (100) and the lower cover (200).

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