Air-cooled pouring bus

Abstract

The utility model relates to the technical field of pouring buses, and discloses an air-cooled pouring bus, which comprises a bus box body and a pouring bus main body, a heat dissipation box is arranged at the top of the bus box body, and a first air duct is formed between the top of the pouring bus main body and the heat dissipation box; and the pouring bus main body is provided with a second air duct. The bus box body is provided with a heat dissipation port. The air outlet of the second air duct is communicated with the heat dissipation port through a third air duct. Wherein the third air duct comprises a heat exchange channel. According to the utility model, through the arrangement of the first air duct, the second air duct and the third air duct, a U-shaped heat dissipation channel is formed between the air inlet at the top of the heat dissipation box and the heat dissipation port in the side wall of the bus box body, especially the heat exchange channel in the third air duct, and hot air exchanges heat with the side wall of the pouring bus main body when passing through the heat exchange channel; the internal and external temperature difference of the pouring bus main body is reduced, and bus deformation or stress generation caused by bus material expansion due to large internal and external temperature difference and non-uniform heat distribution is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of cast busbars, in particular to an air-cooled cast busbar. Background Art

[0002] Cast busbars are made by directly casting and sealing the busbar conductors with high-performance insulating resin through a specific process. Their protection level typically reaches IP68. This type of busbar offers a compact structure and excellent sealing performance, ensuring stable and safe power transmission.

[0003] In electrical systems, busbars are the components responsible for transmitting large amounts of power. Due to limitations in their materials and structure, traditional cast busbars often suffer from uneven heat distribution and insufficient heat dissipation efficiency under high-current conditions. Furthermore, the large temperature difference between the inside and outside of the cast busbar and the uneven heat distribution can cause the busbar material to expand, leading to deformation or stress, posing a potential threat to the stability and safety of the power system. To address these issues, we propose an air-cooled cast busbar. Utility Model Content

[0004] The purpose of the utility model is to provide an air-cooled cast busbar to solve the problems of large temperature difference between the inside and outside of the cast busbar and uneven heat distribution.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an air-cooled cast busbar, comprising a busbar box and a cast busbar body disposed within the busbar box, a heat dissipation box for supplying air to the interior of the busbar box being disposed on the top of the busbar box, and a first air duct being formed between the top of the cast busbar body and the heat dissipation box;

[0006] Conductors are provided in the cast busbar body, and a second air duct is provided through the side wall of the cast busbar body and is located between adjacent conductors;

[0007] The upper parts of the left and right side walls of the busbar box are provided with heat dissipation vents, and the air outlet of the second air duct is connected to the heat dissipation vents through a third air duct;

[0008] The third air duct includes a heat exchange channel, and the heat exchange channel is arranged between the two side walls of the cast busbar body and the inner wall of the busbar box.

[0009] According to the above technical solution, a fan is provided at the connection point between the heat sink and the busbar box, an air inlet is provided on the top of the heat sink, a first foreign body anti-foreign body component for opening and closing the air inlet is provided on the heat sink, and a second foreign body anti-foreign body component for opening and closing the heat sink is provided on the heat sink.

[0010] According to the above technical solution, the first foreign body prevention component includes an inward-opening shielding plate hinged to the inner wall of the air inlet, and an elastic member is provided between the inward-opening shielding plate and the inner wall of the air inlet.

[0011] According to the above technical solution, the second foreign body prevention component includes an outward-opening shielding plate hinged to the inner wall of the heat dissipation port, and a counterweight block is fixed to the bottom of the side wall of the outward-opening shielding plate away from the busbar box.

[0012] According to the above technical solution, a filter covering the air inlet is provided on the top of the heat dissipation box.

[0013] According to the above technical solution, there are three conductors, and the second air ducts are arranged in two rows, and each row is provided with a plurality of second air ducts.

[0014] According to the above technical solution, the third air duct further includes a heat mixing channel, which is arranged between the bottom wall of the cast busbar body and the inner bottom wall of the busbar box, and the heat mixing channel is connected to the heat exchange channel and the second air duct.

[0015] According to the above technical solution, the left and right side walls of the cast busbar body are both provided with heat dissipation grooves connected to the heat exchange channel.

[0016] According to the above technical solution, a baffle is fixedly connected between the busbar box and the cast busbar body.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The utility model provides a first air duct, a second air duct and a third air duct, so that a U-shaped heat dissipation passage is formed between the air inlet on the top of the heat dissipation box and the heat dissipation opening on the side wall of the busbar box body, especially the heat exchange passage in the third air duct. When passing through the heat exchange passage, the hot air exchanges heat with the side wall of the cast busbar body, thereby reducing the temperature difference between the inside and outside of the cast busbar body, and preventing the busbar material from expanding, causing the busbar to deform or generate stress due to the large temperature difference between the inside and outside and the uneven heat distribution.

[0019] The third air duct also includes a heat mixing channel, which mixes the airflow from multiple second air ducts before entering the heat exchange channel, further evenly distributing heat. Furthermore, heat dissipation grooves on the left and right walls of the cast busbar body increase the contact area with the air in the heat exchange channel, ensuring uniform heat dissipation on both sides and preventing local overheating.

[0020] The utility model provides a first anti-foreign object component and a second anti-foreign object component at the air inlet of the heat dissipation box, which effectively prevents external foreign objects from entering the heat dissipation box when the fan is not started. During operation, it can ensure that the heat dissipation channel is unobstructed, and the filter screen on the top of the heat dissipation box can prevent external dust, debris, etc. from entering the heat dissipation box, preventing external foreign objects from entering the device, damaging the equipment and affecting the subsequent heat dissipation effect, thereby ensuring the stable operation and heat dissipation performance of the air-cooled casting busbar. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the air-cooled cast busbar of the utility model;

[0022] Figure 2 It is a schematic diagram of the casting busbar body of the utility model;

[0023] Figure 3 This is a cross-sectional view of the overall structure of the air-cooled cast busbar of the utility model;

[0024] In the picture:

[0025] 1. Busbar box; 2. Cast busbar body; 3. Heat sink; 31. Fan; 4. First air duct; 5. Second air duct; 6. Third air duct; 61. Heat exchange channel; 62. Heat mixing channel; 7. Conductor; 71. Heat dissipation slot; 8. First foreign body protection component; 81. Inward-opening baffle; 82. Elastic member; 83. Filter; 9. Second foreign body protection component; 91. Outward-opening baffle; 92. Counterweight; 11. Air inlet; 12. Heat dissipation port; 13. Baffle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-3 The utility model provides a technical solution for an air-cooled cast busbar: it includes a busbar box 1 and a cast busbar main body 2 arranged in the busbar box 1, the cast busbar main body 2 is cast by insulating resin, and the top of the busbar box 1 is provided with a heat dissipation box 3 for supplying air to the inside of the busbar box 1, so as to perform heat dissipation on the cast busbar main body 2 in the busbar box 1, and a first air duct 4 is formed between the top of the cast busbar main body 2 and the heat dissipation box 3. Air is supplied to the first air duct 4 through the heat dissipation box 3, which can perform preliminary heat dissipation on the top of the cast busbar main body 2.

[0028] Conductors 7 are provided in the cast busbar body 2. Second air ducts 5 located between adjacent conductors 7 are provided through the side walls of the cast busbar body 2. The second air ducts 5 are connected to the first air ducts 4. The wind entering the first air duct 4 will further enter the second air duct 5 and pass through the air outlet of the second air duct 5, effectively guiding the heat to be dissipated from the inside of the cast busbar body 2, thereby improving the heat dissipation effect.

[0029] The upper part of the left and right side walls of the busbar box 1 is provided with a heat dissipation port 12, and the air outlet of the second air duct 5 is connected to the heat dissipation port 12 through the third air duct 6. The wind blown out through the air outlet of the second air duct 5 will carry the heat dissipated by the cast busbar body 2, pass through the third air duct 6, and finally be discharged to the outside through the heat dissipation port 12, and will also bring the heat of the third air duct 6 (that is, the heat of the side walls of the cast busbar body 2) to the outside, thereby improving the overall heat dissipation efficiency, ensuring that the cast busbar can operate stably under high current working conditions, and reducing the potential risks to the power system caused by heat problems.

[0030] By arranging the first air duct, the second air duct and the third air duct, a U-shaped heat dissipation passage is formed between the air inlet on the top of the heat dissipation box and the heat dissipation opening on the side wall of the busbar box.

[0031] The third air duct 6 includes a heat exchange channel 61, which is arranged between the two side walls of the cast busbar body 2 and the inner wall of the busbar box 1. The hot air discharged through the second air duct carries a large amount of heat. The hot air can be quickly discharged from the busbar box from the heat dissipation port through the heat exchange channel. In the process of passing through the heat exchange channel, it can exchange heat with the side walls of the cast busbar body 2, thereby reducing the temperature difference between the inside and outside of the cast busbar body 2, making the temperature inside and outside of the cast busbar body 2 almost consistent, preventing the large temperature difference between the inside and outside of the cast busbar and uneven heat distribution, which leads to expansion of the busbar material and further causes deformation or stress of the busbar.

[0032] Specifically, a fan 31 is provided at the connection point between the heat sink 3 and the busbar box 1. The fan 31 dissipates heat through forced air convection and accelerated air flow, thereby improving heat dissipation efficiency. An air inlet 11 is provided at the top of the heat sink 3. The heat sink 3 is also provided with a first foreign object prevention component 8 for opening and closing the air inlet 11. When the fan 31 is started, air can enter the heat sink 3 through the air inlet 11 and supply air to the busbar box 1 to achieve a heat dissipation effect. When the air-cooled cast busbar is not in use (the fan 31 will also stop supplying power and rotating), the first foreign object prevention component 8 can prevent external foreign objects from entering the device, damaging the equipment, and affecting the subsequent heat dissipation effect.

[0033] The heat sink 3 is equipped with a second foreign object prevention assembly 9 for opening and closing the heat dissipation vents 12. When the fan 31 is activated, hot air can be discharged through the heat dissipation vents 12 to the outside of the busbar box 1 to achieve a heat dissipation effect. When the air-cooled cast busbar is not in use (the fan 31 is also powered and no longer rotated), the second foreign object prevention assembly 9 also prevents foreign matter from entering the device, potentially damaging the equipment and affecting subsequent heat dissipation, thereby ensuring the stable operation and safety of the air-cooled cast busbar.

[0034] Specifically, the first anti-foreign object component 8 includes an inward-opening baffle 81 hinged to the inner wall of the air inlet 11, and an elastic member 82 is provided between the inward-opening baffle 81 and the inner wall of the air inlet 11. The elastic member 82 can be a torsion spring. When there is no external wind force (that is, when the fan 31 is not started), the inward-opening baffle 81 remains in a closed state of the air inlet 11 under the elastic force of the elastic member 82, effectively preventing external foreign objects from entering the interior of the heat dissipation box 3.

[0035] When the fan 31 is started, the wind force will overcome the elastic force of the elastic member 82 and push open the inner opening shielding plate 81, so that air can smoothly enter the heat dissipation box 3 from the air inlet 11, providing continuous air flow for the heat dissipation of the air-cooled casting busbar.

[0036] Specifically, the second foreign body prevention component 9 includes an outward-opening shielding plate 91 hinged to the inner wall of the heat dissipation port 12, and a counterweight block 92 is fixed to the bottom of the side wall of the outward-opening shielding plate 91 away from the busbar box 1;

[0037] When the air-cooled cast busbar is not in use (the fan 31 will also stop supplying power and rotating), the outward-opening shielding plate 91 is in a state of closing the heat dissipation port 12 under the action of the gravity of the counterweight block 92, which can effectively prevent external foreign matter from entering the busbar box 1, damaging the equipment and affecting the subsequent heat dissipation effect.

[0038] When the air-cooled cast busbar is working, when the fan 31 outputs the hot air through the first air duct 4, the second air duct 5 and the third air duct 6 to the heat dissipation port 12, the pressure of the hot air will overcome the gravity of the counterweight block 92, and push open the outward-opening baffle 91, so that the hot air can be discharged smoothly, ensuring the unobstructed heat dissipation channel, so that the air-cooled cast busbar can not only dissipate heat efficiently, but also effectively prevent external foreign matter from entering, thereby improving the stability and safety of the air-cooled cast busbar.

[0039] Specifically, a filter 83 covering the air inlet 11 is provided on the top of the heat sink 3. By setting the filter 83, external dust, debris, etc. can be effectively prevented from entering the heat sink 3, avoiding adverse effects on the heat dissipation effect of the air-cooled cast busbar. At the same time, it can also protect the components inside the heat sink 3 from interference from external foreign matter, ensuring the stable operation and heat dissipation performance of the air-cooled cast busbar.

[0040] Specifically, there are three conductors 7, each serving as a three-phase busbar conductor. Second air ducts 5 are arranged in two rows, with each row containing multiple second air ducts 5. This provides a more comprehensive heat dissipation channel for the air-cooled cast busbar. Air can flow through the multiple second air ducts 5, exchanging heat with the conductors 7, effectively removing heat generated by the conductors 7. This improves the heat dissipation efficiency of the air-cooled cast busbar and ensures its stability and reliability during operation.

[0041] Specifically, the third air duct 6 also includes a heat mixing channel 62, which is arranged between the bottom wall of the cast busbar body 2 and the bottom wall of the busbar box 1, and the heat mixing channel 62 is respectively connected to the heat exchange channel 61 and the second air duct 5. The airflow flowing out of multiple second air ducts 5 can be mixed in the heat mixing channel 62 first, and then simultaneously flow into the heat exchange channel 61 to further evenly distribute the heat.

[0042] Specifically, the left and right side walls of the cast busbar body 2 are both provided with heat dissipation grooves 71 communicating with the heat exchange channel 61;

[0043] Specifically, the left and right side walls of the cast busbar body 2 are each provided with heat dissipation grooves 71 that communicate with the heat exchange channel 61. These heat dissipation grooves 71 increase the contact area between the cast busbar body 2 and the air within the heat exchange channel 61, improving the heat dissipation efficiency of the air-cooled cast busbar. Furthermore, the even distribution of heat dissipation grooves 71 helps ensure uniform heat dissipation on both sides of the cast busbar body 2, preventing localized overheating and thereby enhancing the stability and reliability of the air-cooled cast busbar during operation.

[0044] Specifically, a baffle 13 is fixed between the busbar box 1 and the cast busbar body 2. The setting of the baffle 13 can separate and guide the air flow, prevent the air from flowing disorderly in the busbar box 1, and ensure the stability and reliability of the air-cooled cast busbar during operation.

[0045] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", 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.

[0046] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0047] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0048] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air-cooled cast busbar, characterized by: The invention comprises a busbar box (1) and a cast busbar body (2) arranged in the busbar box (1); a heat dissipation box (3) for supplying air to the interior of the busbar box (1) is provided on the top of the busbar box (1); and a first air duct (4) is formed between the top of the cast busbar body (2) and the heat dissipation box (3); Conductors (7) are provided in the cast busbar body (2), and second air ducts (5) located between adjacent conductors (7) are provided through the side walls of the cast busbar body (2); The upper portions of the left and right side walls of the busbar box (1) are provided with heat dissipation openings (12), and the air outlet of the second air duct (5) is connected to the heat dissipation openings (12) via a third air duct (6); The third air duct (6) includes a heat exchange channel (61), and the heat exchange channel (61) is arranged between the two side walls of the cast busbar body (2) and the inner side wall of the busbar box (1).

2. The air-cooled cast busbar according to claim 1, characterized in that: A fan (31) is provided at the connection point between the heat dissipation box (3) and the busbar box (1); an air inlet (11) is provided at the top of the heat dissipation box (3); a first foreign matter prevention component (8) for opening and closing the air inlet (11) is provided on the heat dissipation box (3); and a second foreign matter prevention component (9) for opening and closing the heat dissipation port (12) is provided on the heat dissipation box (3).

3. The air-cooled cast busbar according to claim 2, characterized in that: The first foreign body prevention component (8) comprises an inwardly opening shielding plate (81) hinged to the inner wall of the air inlet (11), and an elastic member (82) is provided between the inwardly opening shielding plate (81) and the inner wall of the air inlet (11).

4. The air-cooled cast busbar according to claim 2, characterized in that: The second foreign body prevention component (9) comprises an outward-opening shielding plate (91) hinged to the inner wall of the heat dissipation port (12), and a counterweight block (92) is fixedly connected to the bottom of the side wall of the outward-opening shielding plate (91) away from the busbar box (1).

5. The air-cooled cast busbar according to claim 3, characterized in that: A filter screen (83) covering the air inlet (11) is provided on the top of the heat dissipation box (3).

6. The air-cooled cast busbar according to claim 1, characterized in that: There are three conductors (7), two rows of second air ducts (5), and each row is provided with a plurality of second air ducts (5).

7. The air-cooled cast busbar according to claim 6, characterized in that: The third air duct (6) further comprises a heat mixing channel (62), which is arranged between the bottom wall of the cast busbar body (2) and the inner bottom wall of the busbar box (1), and the heat mixing channel (62) is respectively connected to the heat exchange channel (61) and the second air duct (5).

8. The air-cooled cast busbar according to claim 1, characterized in that: The left and right side walls of the cast busbar body (2) are both provided with heat dissipation grooves (71) that are in communication with the heat exchange channel (61).

9. The air-cooled cast busbar according to claim 1, characterized in that: A baffle (13) is fixedly connected between the busbar box (1) and the cast busbar body (2).

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