Special-shaped copper bar and power distribution cabinet
By designing the vents and boss structure of the special-shaped copper strip, the problems of overlapping and low current carrying capacity of rectangular copper strips are solved, efficient heat dissipation and mechanical strength are improved, and cost and production difficulties are reduced.
Patent Information
- Application Number
- CN202420036698.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-05
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-05
AI Technical Summary
The existing rectangular copper rows are difficult to install when overlapping, with a large amount of use and a small current carrying capacity per unit cross-sectional area, resulting in high cost and limited by space and mechanical strength, making it difficult to increase the current carrying capacity.
A special-shaped copper row is designed, including substrate, wing plate and bending plate, forming ventilation ports and card notches, increasing heat dissipation space, and multiple bosses are provided on the wing plate to increase the surface area, and a detachable connection method is used without Open hole overlap to enhance heat dissipation and mechanical strength.
It improves production efficiency, enhances the current carrying capacity per unit cross-sectional area, reduces the copper discharge usage and cost, and ensures the long-term and stable operation of the busbar system.
Smart Images
Figure CN222145810U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrical equipment, in particular to a special-shaped copper busbar and a distribution cabinet. Background Art
[0002] At present, busbars in the electrical industry usually use copper bars with rectangular cross-sections. This type of copper bar needs to be fixed with holes according to the sizes of different specifications of the lap bars. When used in the main busbar of the distribution cabinet, the position of the hole needs to correspond to the branch lap bar. The design and installation accuracy of the structural copper bar are very high. Once there is a deviation, the entire busbar will be scrapped, which not only affects production efficiency but also causes cost waste.
[0003] Moreover, due to the limitations of the space and mechanical strength of the distribution cabinet, the width of this rectangular copper busbar is generally less than 150mm, and the current carrying capacity of a single busbar is limited. If the current carrying capacity needs to be increased, multiple pieces must be stacked; the thickness of a single copper busbar is spaced between the copper busbars for easy overlap, and this method of copper busbar stacking is not conducive to the heat dissipation of the copper busbars. The more pieces there are, the greater the derating factor, and the more copper busbars are used, resulting in a smaller current carrying capacity per unit cross-sectional area in the engineering project, making the copper busbar cost account for too high a proportion, and increasing the total investment cost of the distribution equipment. Utility Model Content
[0004] The main purpose of the utility model is to provide a special-shaped copper busbar and a power distribution cabinet, aiming to solve the problems that the overlapping installation of rectangular copper busbars is difficult, the amount of copper busbars used during overlapping is large, and the current carrying capacity per unit cross-sectional area is small.
[0005] To achieve the above-mentioned purpose, the utility model proposes a special-shaped copper busbar, which includes a base plate and two wing plates arranged opposite to each other, the two wing plates are respectively connected to the two ends of the base plate; one end of each wing plate away from the base plate is bent to form a bent plate, and the two bent plates extend toward each other; the base plate, the two wing plates and the two bent plates are surrounded to form a vent, and a slot communicating with the vent is formed between the ends of the two bent plates;
[0006] The special-shaped copper busbar also includes a plurality of bosses, which are arranged in pairs; in a pair of the bosses, the two bosses are arranged on the two wing plates in a one-to-one correspondence and are respectively protruded in a direction away from the vents; the plurality of bosses located on the same wing plate are arranged at intervals along the first direction; and the end face of each boss is a plane.
[0007] Optionally, there are at least two bosses disposed at both ends of the wing plate; one of the bosses is flush with the base plate, and the other boss is flush with the corresponding bent plate.
[0008] Optionally, the number of the bosses located on the same wing plate is at least three, wherein two of the bosses are respectively arranged at two ends of the wing plate, and the remaining bosses are located between the two ends of the wing plate.
[0009] Optionally, the connection between the end face and the side face of the boss is a cambered transition, and the connection between the boss and the corresponding wing plate is a cambered transition.
[0010] Optionally, the included angle of the inner wall surface of the vent is a curved surface transition.
[0011] Optionally, the wing plate is perpendicular to the base plate.
[0012] Optionally, the bending plate is perpendicular to the wing plate, and the two bending plates are in the same plane.
[0013] Optionally, the special-shaped copper busbar is an integrally formed part.
[0014] The utility model also provides a power distribution cabinet, which comprises an insulating busbar clamp and a special-shaped copper busbar as described in any of the above technical solutions, wherein the insulating busbar clamp is connected to the special-shaped copper busbar.
[0015] Optionally, the inner wall of the insulating busbar clamp has two fixing protrusions, a groove is formed between the two fixing protrusions, the groove is fixedly connected to at least one of the protrusions, and a gap is formed between the inner wall of the insulating busbar clamp and the base plate / the wing plate.
[0016] In the embodiment of the utility model, the special-shaped copper busbar includes a card slot and a vent. When overlapping with the branch copper busbar, no hole is required, and the branch copper busbar can be overlapped through the card slot; the vent increases the heat dissipation space inside the special-shaped copper busbar, which is beneficial to improve the current carrying capacity per unit cross-sectional area; when overlapping, the branch copper busbar abuts against the side of the two bending plates away from the substrate, and the holes on the branch copper busbar correspond to the card slot, and the special-shaped copper busbar can be connected to the branch copper busbar through the card slot and the holes on the branch copper busbar through fasteners. The special-shaped copper busbar and the branch copper busbar are detachably connected, and the fasteners can abut the two bending plates to limit the branch copper busbar. The branch copper busbar can be overlapped at any position of the card slot, and is not affected by the left and right positions of the branch copper busbar, and no holes are required when overlapping, which can be large The special-shaped copper busbar is also provided with a plurality of bosses, which are arranged in pairs, and the two bosses in a pair are arranged on the two wing plates one by one, which can increase the surface area of the special-shaped copper busbar. According to the skin effect principle of the copper busbar, the heat dissipation area of the surface of the special-shaped copper busbar can be increased, the capacity reduction value of the special-shaped copper busbar can be reduced, and the current carrying capacity of the special-shaped copper busbar can be further increased, thereby reducing the amount of the special-shaped copper busbar and reducing the use cost; the end face of each boss is a plane, which can improve the fit between the end face of the boss and the insulating busbar clamp when the special-shaped copper busbar body is installed, making the installation more stable; because the special-shaped copper busbar is a rectangular structure, compared with the rectangular copper busbar, it can greatly enhance the dynamic thermal stability tolerance, ensuring that the busbar system is in a stable working state for a long time.
[0017] The technical solution of the utility model is convenient for overlapping branch copper bars by setting the card slot, and no holes are needed for overlapping, which can greatly improve the production efficiency, and the branch copper bars can be overlapped at any position of the card slot, which is not affected by the left and right positions of the branch copper bars, and is convenient for users to expand their needs in the future; by setting the vents, a ventilation space is formed inside the special-shaped copper bars, which is conducive to heat dissipation and can increase the current carrying capacity per unit cross-sectional area; by setting a plurality of bosses to increase the surface area of the copper bars, according to the skin effect principle of the copper bars, it can increase the heat dissipation area of the copper bars surface, reduce the capacity reduction value of the copper bars, and further increase the current carrying capacity of the copper bars, thereby reducing the amount of copper bars used and reducing the use cost; and the special-shaped copper bars are rectangular structures, which can greatly enhance the dynamic thermal stability tolerance compared with the rectangular copper bars, and ensure that the busbar system is in a stable working state for a long time. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0019] Figure 1This is a first structural schematic diagram of an embodiment of the utility model special-shaped copper busbar;
[0020] Figure 2 This is a second structural schematic diagram of an embodiment of the special-shaped copper busbar of the utility model.
[0021] Description of Figure Numbers:
[0022] Label name Label name 100 Special-shaped copper busbar 5 Card slot 1 substrate 6 Boss 2 Wing 61 End face 3 Bending Plate 62 side 4 Air vents
[0023] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0026] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0027] The main purpose of the utility model is to provide a special-shaped copper busbar, aiming to solve the problems of difficulty in overlapping and installing rectangular copper busbars, large amount of copper busbars used during overlapping and small current carrying capacity per unit cross-sectional area.
[0028] The utility model provides a special-shaped copper busbar.
[0029] like Figure 1 and Figure 2As shown, in one embodiment of the utility model, the special-shaped copper busbar 100 includes a base plate 1 and two wing plates 2 arranged opposite to each other, and the two wing plates 2 are respectively connected to the two ends of the base plate 1; one end of each wing plate 2 away from the base plate 1 is bent to form a bent plate 3, and the two bent plates 3 extend toward each other; the base plate 1, the two wing plates 2 and the two bent plates 3 are enclosed to form a vent 4, and a slot 5 connected to the vent 4 is formed between the ends of the two bent plates 3; the special-shaped copper busbar 100 also includes a plurality of bosses 6, and the bosses 6 are arranged in pairs; in a pair of bosses 6, two bosses 6 are arranged one by one on the two wing plates 2 and are respectively protruded in the direction away from the vent 4; the plurality of bosses 6 located on the same wing plate 2 are arranged at intervals along the first direction; the end face 61 of each boss 6 is a plane.
[0030] like Figure 1 and Figure 2 As shown, in the embodiment of the utility model, the special-shaped copper busbar 100 includes a card slot 5 and a vent 4. When overlapping with the branch copper busbar, no hole is required, and the branch copper busbar can be overlapped through the card slot 5; the vent 4 is provided to increase the heat dissipation space inside the special-shaped copper busbar 100, which is beneficial to improve the current carrying capacity per unit cross-sectional area; when overlapping, the branch copper busbar abuts against the side of the two bending plates 3 away from the substrate 1, and the holes on the branch copper busbar correspond to the card slot 5, and the special-shaped copper busbar 100 can be connected to the branch copper busbar by passing through the card slot 5 and the holes on the branch copper busbar through the fastener. The special-shaped copper busbar 100 and the branch copper busbar are detachably connected, and the fastener can abut the two bending plates 3 to limit the branch copper busbar. The branch copper busbar can be overlapped at any position of the card slot 5, and is not affected by the left and right positions of the branch copper busbar, and no hole is required when overlapping, which can greatly improve the production efficiency. rate, and is also convenient for users to expand their needs in the future; the special-shaped copper busbar 100 is also provided with a plurality of bosses 6, which are arranged in pairs, and the two bosses 6 in a pair are arranged one by one at the same position of the two wing plates 2, which can increase the surface area of the special-shaped copper busbar 100. According to the skin effect principle of the copper busbar, the surface heat dissipation area of the special-shaped copper busbar 100 can be increased, the capacity reduction value of the special-shaped copper busbar 100 can be reduced, and the current carrying capacity of the special-shaped copper busbar 100 can be further increased, thereby reducing the amount of the special-shaped copper busbar 100 and reducing the use cost; the end face 61 of each boss 6 is a plane, which can improve the fit between the end face 61 of the boss 6 and the insulating busbar clamp when the special-shaped copper busbar 100 body is installed, making the installation more stable; because the special-shaped copper busbar 100 is a rectangular parallelepiped structure, compared with the rectangular copper busbar, it can greatly enhance the dynamic thermal stability tolerance, ensuring that the busbar system is in a stable working state for a long time.
[0031] The technical solution of the utility model is convenient for overlapping the branch copper busbars by setting the card slot 5. No holes are required for overlapping, which can greatly improve the production efficiency. The branch copper busbars can be overlapped at any position of the card slot 5, and are not affected by the left and right positions of the branch copper busbars, which is convenient for users to expand their needs in the future. The vents 4 are set to form a ventilation space inside the special-shaped copper busbar 100, which is conducive to heat dissipation and can increase the current carrying capacity per unit cross-sectional area. The surface area of the copper busbar is increased by setting a plurality of bosses 6. According to the skin effect principle of the copper busbar, the heat dissipation area of the copper busbar surface can be increased, the capacity reduction value of the copper busbar can be reduced, and the current carrying capacity of the copper busbar can be further increased, thereby reducing the amount of copper busbar used and reducing the use cost. The special-shaped copper busbar 100 is a rectangular structure. Compared with the rectangular copper busbar, it can greatly enhance the dynamic thermal stability tolerance and ensure that the busbar system is in a stable working state for a long time.
[0032] In this embodiment, there are at least two bosses 6 arranged at both ends of the wing plate 2; one of the bosses 6 is flush with the base plate 1, and the other boss 6 is flush with the corresponding bending plate 3; because the base plate 1 and the two wing plates 2 need to be fixedly installed when the special-shaped copper busbar 100 is fixedly installed, there are at least two bosses 6 arranged at both ends of the wing plate 2, and they are respectively flush with the base plate 1 and the corresponding bending plate 3, which is beneficial to improve the strength of the special-shaped copper busbar 100 at the connection between the base plate 1 and the wing plate 2 and the connection between the wing plate 2 and the bending plate 3; and the boss 6 arranged flush with the corresponding bending plate 3 can also increase the overlapping area when overlapping with the branch copper busbar, reduce the overlapping resistance, and avoid local heating at the overlapping part.
[0033] Specifically, the number of bosses 6 located on the same wing plate 2 is at least three, of which two bosses 6 are respectively arranged at the two ends of the wing plate 2, and the remaining bosses 6 are located between the two ends of the wing plate 2; in this embodiment, the number of bosses 6 located on the same wing plate 2 is three, of which two bosses 6 are arranged at the two ends of the wing plate 2, and the remaining boss 6 is arranged between the two ends of the wing plate 2; according to the skin effect principle of the copper busbar, setting three bosses 6 can increase the heat dissipation area of the copper busbar surface, reduce the capacity reduction value of the copper busbar, and increase the current carrying capacity of the copper busbar, thereby reducing the amount of copper busbar used and reducing the cost of use; and the bosses 6 at both ends are beneficial to improving the strength of the special-shaped copper busbar 100; the boss 6 arranged flush with the corresponding bending plate 3 can also increase the overlapping area when overlapping with the branch copper busbar, reduce the overlapping resistance, and avoid local heating at the overlapping point.
[0034] In other embodiments, when the left and right widths of the special-shaped copper busbar 100 are larger, the number of bosses 6 located on the same wing plate 2 can also be four or five, wherein two bosses 6 are respectively arranged at the two ends of the wing plate 2, and the remaining bosses 6 are arranged between the two ends of the wing plate 2; this embodiment does not limit the specific number of bosses 6.
[0035] In this embodiment, the connection between the end face 61 and the side face 62 of the boss 6 is a curved surface transition, and the connection between the boss 6 and the corresponding wing plate 2 is a curved surface transition; the connection between the end face 61 and the side face 62 of the boss 6 is a curved surface transition, which can facilitate the molding of the boss 6; the connection between the boss 6 and the corresponding wing plate 2 is a curved surface transition, which can avoid stress concentration at the connection during molding and improve the connection strength between the boss 6 and the corresponding wing plate 2.
[0036] like Figure 1 As shown, in this embodiment, the angle of the inner wall surface of the vent 4 is a camber transition; the vent 4 is enclosed by a base plate 1, two wing plates 2 and two bent plates 3, so angles are formed at the connection between the base plate 1 and the two wing plates 2, and angles are also formed at the connection between the two wing plates 2 and the two bent plates 3 in a one-to-one correspondence. The angle of the inner wall surface of the vent 4 is a camber transition, which not only facilitates the molding of the special-shaped copper busbar 100, but also avoids stress concentration at the connection between the base plate 1, the two wing plates 2 and the two bent plates 3 during molding, thereby improving the overall strength of the special-shaped copper busbar 100.
[0037] Based on the above embodiment, the wing plate 2 is perpendicular to the base plate 1; the special-shaped copper busbar 100 is a rectangular parallelepiped structure with a hollow structure in the middle. When subjected to a force, the internal interaction force of the special-shaped copper busbar 100 is small, so it is not easily damaged by the internal stress. Therefore, this structure can enhance the mechanical strength of the special-shaped copper busbar 100, making it structurally stable and not easily deformed during installation; and compared with the rectangular copper busbar, the special-shaped copper busbar 100 can greatly enhance the dynamic thermal stability tolerance, improve the performance of electrical equipment, and ensure that the busbar system is in a stable working state for a long time.
[0038] Furthermore, the bending plate 3 is perpendicular to the wing plate 2, and the two bending plates 3 are in the same plane; when the two bending plates 3 are in the same plane and overlap with the branch copper busbar, the side of the two bending plates 3 away from the substrate 1 can fit more closely with the branch copper busbar and overlap more firmly.
[0039] In this embodiment, the special-shaped copper busbar 100 is an integrally formed part. Compared with the rectangular copper busbar, the structure of the special-shaped copper busbar 100 is relatively complex. In order to improve the strength and production efficiency of the special-shaped copper busbar 100, the special-shaped copper busbar 100 is an integrally formed part.
[0040] The utility model also proposes a power distribution cabinet, which includes an insulating busbar clamp and a special-shaped copper busbar 100. The specific structure of the special-shaped copper busbar 100 refers to the above embodiment. Since the power distribution cabinet adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Among them, the insulating busbar clamp is connected to the special-shaped copper busbar 100; the special-shaped copper busbar 100 mainly plays the role of transmitting current and connecting electrical equipment in the circuit; the insulating busbar clamp serves as a joint and fixing part of the special-shaped copper busbar 100. The insulating busbar clamp can be used in the power distribution cabinet to effectively connect and fix the special-shaped copper busbar 100, making the installation simpler and more convenient.
[0041] Specifically, the inner wall of the insulating busbar clamp has two fixed protrusions, and a groove is formed between the two fixed protrusions. The groove is fixedly connected to at least one boss 6, and a gap is formed between the inner wall of the insulating busbar clamp and the substrate 1 / wing plate 2; according to the different width requirements of the special-shaped copper busbar 100, when fixing the insulating busbar clamp and the special-shaped copper busbar 100, the groove of the insulating busbar clamp can be selected to be fixedly connected to at least one boss 6 of the special-shaped copper busbar 100, so that the groove and the boss 6 form a clamping design, which is convenient for fixing and preventing the special-shaped copper busbar 100 from slipping relative to the insulating busbar clamp. The clamping design facilitates the temporary addition of branch copper buses, which provides convenience for users to expand loads or distribution cabinets in the future; there are gaps between the inner wall of the insulating busbar clamp and the substrate 1 and two wings 2 of the special-shaped copper busbar 100 to facilitate surface heat dissipation of the special-shaped copper busbar 100.
[0042] In this embodiment, the width of the special-shaped copper busbar 100 is moderate, and the groove can be fixedly connected to a boss 6 to complete the fixation; in other embodiments, when the width of the special-shaped copper busbar 100 is larger, the groove can be fixedly connected to a boss 6, or the groove can be fixedly connected to multiple bosses 6 to increase the fixed connection area between the insulating busbar clamp and the special-shaped copper busbar 100, so as to complete the fixation and prevent the special-shaped copper busbar 100 from slipping relative to the insulating busbar clamp; and through the positioning design of the groove and the boss 6, a set of insulating busbar clamps can be used to fix copper bars of different widths, thereby improving the compatibility of the insulating busbar clamps and reducing the types and inventory of insulating busbar clamps.
[0043] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A special-shaped copper busbar, It is characterized in that The special-shaped copper busbar comprises a base plate and two wing plates arranged opposite to each other, the two wing plates are respectively connected to two ends of the base plate; one end of each wing plate away from the base plate is bent to form a bent plate, and the two bent plates extend toward each other; the base plate, the two wing plates and the two bent plates are enclosed to form a vent, and a slot communicating with the vent is formed between the ends of the two bent plates; The special-shaped copper busbar also includes a plurality of bosses, which are arranged in pairs; in a pair of the bosses, the two bosses are arranged on the two wing plates in a one-to-one correspondence and are respectively protruded in a direction away from the vents; the plurality of bosses located on the same wing plate are arranged at intervals along the first direction; and the end face of each boss is a plane.
2. The special-shaped copper busbar according to claim 1, It is characterized in that There are at least two bosses disposed at both ends of the wing plate; one of the bosses is flush with the base plate, and the other boss is flush with the corresponding bent plate.
3. The special-shaped copper busbar according to claim 2, It is characterized in that The number of the bosses located on the same wing plate is at least three, wherein two of the bosses are respectively arranged at two ends of the wing plate, and the remaining bosses are located between the two ends of the wing plate.
4. The special-shaped copper busbar according to claim 1, It is characterized in that The connection between the end face and the side face of the boss is a cambered transition, and the connection between the boss and the corresponding wing plate is a cambered transition.
5. The special-shaped copper busbar according to claim 1, It is characterized in that The included angle of the inner wall surface of the vent is a curved surface transition.
6. The special-shaped copper busbar according to any one of claims 1 to 5, It is characterized in that The wing plate is perpendicular to the base plate.
7. The special-shaped copper busbar according to claim 6, It is characterized in that The bending plate is perpendicular to the wing plate, and the two bending plates are in the same plane.
8. The special-shaped copper busbar according to any one of claims 1 to 5, It is characterized in that The special-shaped copper busbar is an integrally formed part.
9. A power distribution cabinet, It is characterized in that The power distribution cabinet comprises an insulating busbar clamp and a special-shaped copper busbar according to any one of claims 1 to 8, wherein the insulating busbar clamp is connected to the special-shaped copper busbar.
10. The power distribution cabinet according to claim 9, It is characterized in that The inner wall of the insulating busbar clamp has two fixing protrusions, a groove is formed between two adjacent fixing protrusions, the groove is fixedly connected to at least one of the protrusions, and a gap is formed between the inner wall of the insulating busbar clamp and the base plate / the wing plate.