Busbar heat dissipation system

Abstract

The utility model provides a busbar heat dissipation system, which comprises an electrical cabinet, an air duct outer cover arranged at the upper end of the electrical cabinet, a vertical support plate arranged at the bottom end of the air duct outer cover, dust screens arranged at two sides of the air duct outer cover, an axial flow fan arranged at the dust screens, and a three-phase total copper busbar arranged inside the air duct outer cover. The three phases of total bus copper bars are mutually staggered in the height direction, the total bus copper bars are connected with the top ends of the circuit breaker wire inlet copper bars, the bottom ends of the circuit breaker wire inlet copper bars are connected with the circuit breakers, the current input ends of the total bus copper bars are connected with the electrical cabinet wire inlet copper bars through the connecting copper bars, and the electrical cabinet wire inlet copper bars are flush in the height direction. According to the utility model, the copper bars in the electrical cabinet are wrapped by the air duct outer cover, enough gaps are reserved between the air duct outer cover and the copper bars, the air duct outer cover and the copper bars share the same path, air draft and air exhaust are carried out at the two tail ends of the air duct outer cover, air flow is formed, heat generated by a busbar is effectively taken away, and rapid heat dissipation of the copper bars in the electrical cabinet is realized.

Description

Technical Field

[0001] This utility model relates to the field of busbar heat dissipation technology, specifically a busbar heat dissipation system. Background Technology

[0002] The main power supply line of the power distribution equipment (copper busbar or aluminum busbar is called busbar) is led up and down from the busbar. Sometimes it is also called busbar. It is the name of the conductive material in the power distribution equipment. The material is mainly copper or aluminum (equivalent to wire). It is mainly used to connect the indoor transformer to the distribution cabinet, then to the main power switch, and then to each branch switch.

[0003] In power distribution systems, some power loads are unstable, or the number of electrical devices increases, leading to an increase in the load current of the busbar, which can cause the busbar to heat up and affect the stability and safety of the power supply.

[0004] Currently, existing technologies often involve opening louvers or ventilation slots on the side walls of electrical cabinets to reduce the temperature of the busbars through natural heat dissipation. However, this heat dissipation effect is weak and the heat dissipation efficiency is low. In addition, existing technologies also use insulating sheets to enhance the heat dissipation of the copper busbars, but this method often only increases the local heat dissipation effect. Moreover, existing local forced heat dissipation increases the number of structural components and reduces the gaps between copper busbars, increasing the risk of short circuits between copper busbars and hindering the safe operation of the electrical cabinet. Utility Model Content

[0005] The purpose of this invention is to improve and innovate upon the shortcomings and problems existing in the background technology, and to provide a busbar heat dissipation system.

[0006] A busbar cooling system includes an electrical cabinet. A support plate is installed at the upper part of the electrical cabinet. The support plate includes a horizontal support plate and a vertical support plate. Multiple circuit breakers are installed on the horizontal support plate, and the vertical support plate separates the circuit breakers. A duct cover is also installed at the upper part of the electrical cabinet, with its bottom end mounted on the vertical support plate. Dustproof nets are installed on both sides of the duct cover, and axial flow fans are installed at the dustproof nets. The duct cover is made of insulating material. A three-phase busbar is installed inside the duct cover. The three-phase busbars are staggered in height. The top of the busbar is connected to the top of the circuit breaker incoming line busbar, and the bottom of the circuit breaker incoming line busbar is connected to the circuit breaker. The current input terminal of the busbar is connected to the electrical cabinet incoming line busbar via a connecting copper busbar. The electrical cabinet incoming line busbar is flush in height.

[0007] A further option is that the axial flow fans on both sides of the duct cover are integrated exhaust and delivery fans.

[0008] A further embodiment is that the axial flow fan includes a fixed cylinder, inside which a motor mounting base is provided. The motor mounting base is connected to the inner wall of the fixed cylinder via a support rod. A motor is installed inside the motor mounting base, and a cooling fan is fixedly connected to the output end of the motor. The motor has forward and reverse rotation functions.

[0009] A further embodiment includes slots on both side walls of the duct cover, insert plates inserted into the slots, dustproof nets mounted on the insert plates, a first pull ring installed at the end of the insert plates, a first groove on the duct cover, a connecting block fixedly connected to the bottom wall of the first groove by a first spring, a locking block installed at the end of the connecting block away from the first spring, the side of the locking block near the first pull ring being inclined, a limiting groove adapted to the locking block on the insert plate, a movable groove communicating with the first groove on the duct cover, and a second pull ring fixedly connected to the connecting block by a connecting rod adapted to the movable groove.

[0010] A further embodiment is that a second groove is provided on the side wall of the air duct cover, a second spring is fixedly connected to the bottom wall of the second groove, and a movable plate is fixedly connected to the second spring. The movable plate abuts against the end of the insert plate away from the first pull ring.

[0011] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention encloses the copper busbars inside the electrical cabinet with a duct cover, leaving sufficient gaps between the duct cover and the copper busbars. The duct cover follows the same path as the main busbar, and exhaust air is drawn in and exhausted at both ends of the duct cover, creating airflow that effectively removes heat generated by the busbars, achieving rapid heat dissipation of the copper busbars inside the electrical cabinet. While ensuring heat dissipation, the duct cover, made of insulating material, also increases insulation strength, greatly improving the safe operation of electrical equipment. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a front view cross-sectional structural diagram of a busbar heat dissipation system provided in an embodiment of the present utility model;

[0014] Figure 2 A top cross-sectional view of a busbar heat dissipation system provided in an embodiment of this utility model;

[0015] Figure 3 Provided for the embodiments of this utility model Figure 2 A magnified view of the structure at point A in the middle;

[0016] Figure 4 Provided for the embodiments of this utility model Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0017] Reference numerals in the attached diagram: 1. Electrical cabinet; 2. Circuit breaker; 3. Support plate; 4. Duct cover; 5. Axial flow fan; 51. Motor mounting base; 52. Motor; 53. Cooling fan; 54. Fixing cylinder; 6. Dustproof net; 7. Main busbar; 8. Circuit breaker incoming copper busbar; 9. Connecting copper busbar; 10. Electrical cabinet incoming copper busbar; 11. Insert plate; 12. First pull ring; 13. Locking block; 14. Connecting block; 15. First spring; 16. First groove; 17. Movable groove; 18. Second pull ring; 19. Slot; 20. Movable plate; 21. Second groove; 22. Second spring. Detailed Implementation

[0018] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Please see Figures 1-2 This utility model provides a busbar heat dissipation system, including an electrical cabinet 1. The upper part of the electrical cabinet 1 is provided with a support plate 3. The support plate 3 includes a horizontal support plate and a vertical support plate. Multiple circuit breakers 2 are installed on the horizontal support plate. The vertical support plate is used to separate the circuit breakers 2. The top of the vertical support plate supports a duct cover 4. The duct cover 4 is made of insulating transparent material. The support plate 3 serves to support the circuit breakers 2 and the duct cover 4.

[0022] Dustproof nets 6 are installed on both sides of the duct cover 4. An axial flow fan 5 is installed at the dustproof net 6. A main busbar 7 is installed inside the duct cover 4. The main busbar 7 has three phases, corresponding to yellow, green and red, which are phases A, B and C respectively. The three phases of the main busbar 7 are staggered in the height direction. The main busbar 7 is connected to the top of the circuit breaker incoming line copper busbar 8. The bottom of the circuit breaker incoming line copper busbar 8 is connected to the circuit breaker 2. The current input terminal of the main busbar 7 is connected to the electrical cabinet incoming line copper busbar 10 through the connecting copper busbar 9. The electrical cabinet incoming line copper busbar 10 is flush in the height direction. The axial flow fans 5 on both sides of the duct cover 4 are integrated exhaust fans. When the axial flow fan 5 on one side of the duct cover 4 delivers air, the axial flow fan 5 on the other side exhausts the air inside the duct cover 4, so that airflow is formed inside the duct cover 4. Since the three-phase busbars 7 are staggered in the height direction, they will not block each other, thus effectively carrying away the heat generated by the three-phase busbars 7, realizing rapid heat dissipation of the copper busbars inside the electrical cabinet 1.

[0023] Specifically, the axial flow fan 5 includes a fixed cylinder 54, which is mounted on the side wall of the duct cover 4. A motor mounting base 51 is installed inside the fixed cylinder 54, and the motor mounting base 51 is connected to the inner wall of the fixed cylinder 54 via a support rod. A motor 52 is installed inside the motor mounting base 51, and a cooling fan 53 is fixedly connected to the output end of the motor 52. The motor 52 has forward and reverse rotation capabilities. By controlling the forward and reverse rotation of the motor 52, the axial flow fan 5 can respectively deliver and exhaust air. Heat dissipation holes can be opened on the side wall of the motor mounting base 51 to facilitate heat dissipation of the motor 52.

[0024] Please see Figures 3-4The duct cover 4 has slots 19 on both side walls, into which insert plates 11 are inserted. A dustproof net 6 is mounted on the insert plate 11, preventing dust from entering the duct cover 4. A first pull ring 12 is installed at the end of the insert plate 11, allowing for easy removal of the insert plate 11 from the slot 19 by holding the first pull ring 12, thus facilitating the cleaning of dust adhering to the dustproof net 6. The duct cover 4 has a first groove 16, the bottom wall of which is fixedly connected to a connecting block 14 by a first spring 15. A locking block 13 is installed at the end of the connecting block 14 away from the first spring 15. The side of the locking block 13 closest to the first pull ring 12 is beveled, and a limiting groove adapted to the locking block 13 is provided on the insert plate 11. During the insertion of the insert plate 11 into the slot 19, the insert plate 11 compresses the clamping block 13 and the connecting block 14 into the first groove 16 and compresses the first spring 15. When the insert plate 11 is in place, the clamping block 13 is embedded in the limiting groove under the action of the first spring 15, thereby fixing the insert plate 11 to the side wall of the duct cover 4. The duct cover 4 is also provided with a movable groove 17 that communicates with the first groove 16. The connecting block 14 is fixedly connected to the second pull ring 18 by a connecting rod that is adapted to the movable groove 17. By holding the second pull ring 18, the connecting block 14 can be pulled to make the clamping block 13 disengage from the limiting groove, thereby releasing the clamping block 13 from restricting the insert plate 11. At this time, the insert plate 11 can be removed from the side wall of the duct cover 4.

[0025] Preferably, a second groove 21 is provided on the side wall of the air duct cover 4. A second spring 22 is fixedly connected to the bottom wall of the second groove 21. A movable plate 20 is fixedly connected to the second spring 22. The movable plate 20 abuts against the end of the insert plate 11 away from the first pull ring 12. When the locking block 13 is released from its restrictive effect on the insert plate 11, the end of the insert plate 11 near the first pull ring 12 can be ejected from the slot 19 under the reset action of the second spring 22, thereby making it easier to disassemble the insert plate 11.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model.

[0027] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0028] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The reference to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily indicate the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application. Although embodiments of this utility model have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A busbar heat dissipation system, comprising an electrical cabinet (1), wherein a support plate (3) is provided at the upper end of the interior of the electrical cabinet (1), the support plate (3) comprising a horizontal support plate and a vertical support plate, wherein a plurality of circuit breakers (2) are installed on the horizontal support plate, and the vertical support plate is used to separate the circuit breakers (2), characterized in that: The electrical cabinet (1) is also provided with a duct cover (4) at the top. The bottom of the duct cover (4) is installed on a vertical support plate. Dustproof nets (6) are provided on both sides of the duct cover (4). An axial flow fan (5) is provided at the dustproof net (6). The duct cover (4) is made of insulating material. A three-phase busbar (7) is provided inside the duct cover (4). The three-phase busbar (7) is staggered in the height direction. The busbar (7) is connected to the top of the circuit breaker incoming line busbar (8). The bottom of the circuit breaker incoming line busbar (8) is connected to the circuit breaker (2). The current input terminal of the busbar (7) is connected to the electrical cabinet incoming line busbar (10) through the connecting copper busbar (9). The electrical cabinet incoming line busbar (10) is flush in the height direction.

2. The busbar heat dissipation system according to claim 1, characterized in that: The axial flow fans (5) on both sides of the duct cover (4) are integrated exhaust and delivery fans.

3. The busbar heat dissipation system according to claim 2, characterized in that: The axial flow fan (5) includes a fixed cylinder (54), and a motor mounting base (51) is provided inside the fixed cylinder (54). The motor mounting base (51) is connected to the inner wall of the fixed cylinder (54) through a support rod. A motor (52) is installed inside the motor mounting base (51). A cooling fan (53) is fixedly connected to the output end of the motor (52). The motor (52) has forward and reverse rotation functions.

4. The busbar heat dissipation system according to claim 1, characterized in that: The duct cover (4) has slots (19) on both sides of the sidewalls. A plate (11) is inserted into the slot (19). The dustproof net (6) is placed on the plate (11). A first pull ring (12) is installed at the end of the plate (11). A first groove (16) is provided on the duct cover (4). A connecting block (14) is fixedly connected to the bottom wall of the first groove (16) by a first spring (15). A locking block (13) is installed at the end of the connecting block (14) away from the first spring (15). The side of the locking block (13) near the first pull ring (12) is inclined. A limiting groove adapted to the locking block (13) is provided on the plate (11). A movable groove (17) connected to the first groove (16) is provided on the duct cover (4). A second pull ring (18) is fixedly connected to the connecting block (14) by a connecting rod adapted to the movable groove (17).

5. A busbar heat dissipation system according to claim 4, characterized in that: The air duct cover (4) has a second groove (21) on its side wall. The bottom wall of the second groove (21) is fixedly connected to a second spring (22). The second spring (22) is fixedly connected to a movable plate (20). The movable plate (20) abuts against the end of the insert plate (11) away from the first pull ring (12).

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