Salt mist corrosion resistant power cable busbar protection structure

Abstract

The utility model discloses a kind of salt mist corrosion-resistant busbar protection structures, belong to busbar technical field, including including a protective box for encapsulating the connecting part, the protective box is composed of detachably connected upper cover and lower cover, forms a hollow cavity, through opening for the insulating part of the busbar body is set up on the opposite two side walls of the upper cover and lower cover, the upper cover and lower cover are sealed by the buckle and the card slot structure of being arranged at the edge thereof Cover, the utility model has the advantage of improving the salt mist resistance of busbar.

Description

Technical Field

[0001] This utility model relates to the field of busbar technology, specifically to a protective structure for busbars resistant to salt spray corrosion. Background Technology

[0002] Busbars are conductive metal materials widely used in power distribution systems, primarily for transmitting electricity from power sources to various loads. They are mainly made of copper and aluminum, possessing high conductivity and corrosion resistance. Common forms include flat bars, rectangular bars, and tubular bars, and their oxidation resistance can be enhanced through tin plating. As a critical connection point in electrical equipment, the heat dissipation characteristics and standardized design of busbars (such as compliance with UL standards and IEC 60050) ensure the safety and stability of power transmission. Their applications span power distribution equipment, automotive, communications, data communications / telecommunications, testing and measurement, medical, and industrial sectors.

[0003] Typically, a busbar consists of a busbar body and connection holes at both ends. In use, the connection holes of the two busbars are aligned in the same vertical direction, and then electrical connection is achieved by screws or other fastening screws.

[0004] However, in marine, coastal areas, or certain specific industrial environments, the air contains high concentrations of chloride ions and other salts, forming a typical salt spray environment. This environment poses a serious threat to metal components, especially busbars.

[0005] Based on this, the present invention designs a salt spray corrosion resistant busbar protection structure to solve the above problems. Utility Model Content

[0006] To achieve the above objectives, the present invention provides the following technical solution: it further includes a protective box for encapsulating the connecting part. The protective box is composed of a detachably connected upper cover and a lower cover, forming a hollow cavity. The upper cover and the lower cover have through openings on their opposite side walls for the insulation part of the busbar body to pass through. The upper cover and the lower cover are sealed together by a buckle and slot structure provided on their edges.

[0007] By adopting the above technical solution, the most corrosion-prone parts of the busbar, such as the connecting parts, screws, and connecting holes, are completely encapsulated in an independent sealed cavity. This fundamentally isolates the salt spray from contacting the connecting parts, achieving targeted protection. Its detachable feature facilitates daily inspection and maintenance, while the snap-fit ​​and slot connection method enables quick sealing and closing, greatly improving the efficiency of installation and maintenance.

[0008] Preferably, the inner surfaces of both the upper and lower covers are provided with inwardly protruding annular sealing ribs. The positions of the annular sealing ribs correspond to the exposed rod portions of the fastening screws at both ends of the connecting holes. When the upper and lower covers are closed, the annular sealing ribs on both sides are tightly pressed against the periphery of the fastening screws.

[0009] By adopting the above technical solution, the design of the annular sealing rib is specifically designed to address the protection problem of the corrosion weak point of the screw rod. When the upper and lower covers are closed, the sealing ribs on both sides are tightly pressed onto the screw rod, effectively preventing salt spray and moisture from entering the connection hole along the screw rod, and greatly improving the corrosion resistance of the core connection part.

[0010] Preferably, the lower cover has a positioning flange extending downwards around its periphery, and when the upper cover and the lower cover are closed, the positioning flange covers the outer edge of the upper cover.

[0011] By adopting the above technical solution and setting a positioning flange, the upper and lower covers can be quickly and accurately aligned, avoiding the problem of poor sealing caused by misalignment during installation. The flange structure also further wraps the joint between the upper and lower covers from the outside, forming an additional dustproof and moisture-proof barrier, effectively improving the overall sealing level and protection reliability of the protective box.

[0012] Preferably, the bottom of the lower cover has a drainage hole.

[0013] By adopting the above technical solution, if a small amount of condensate or accidentally intruded liquid enters the protective box, the drain hole can drain it in time, preventing the liquid from accumulating in the sealed cavity. This fundamentally eliminates the risk of accelerated electrochemical corrosion caused by long-term water accumulation and improves the long-term reliability of the protective structure.

[0014] Preferably, the inner bottom wall of the lower cover is provided with an inclined guide slope, and the lowest point of the guide slope is connected to the drain hole.

[0015] By adopting the above technical solution, the design of the flow slope, in conjunction with the drainage hole, actively guides the liquid entering the box to the drainage hole, ensuring smooth drainage, reducing residue, and further enhancing the durability of the protective box in humid environments.

[0016] Preferably, the inner wall of the through opening has an elastic sealing gasket that is adapted to the shape of the insulating part of the busbar body.

[0017] By adopting the above technical solution, an elastic sealing gasket is set at the through opening, creating a flexible sealing interface. When under pressure, the elastic sealing gasket can fit tightly against the surface of the busbar insulation part, perfectly adapting to the slight unevenness of the busbar surface and effectively filling the assembly gap between the protective box and the busbar.

[0018] Preferably, the protective box is made of corrosion-resistant engineering plastic.

[0019] By adopting the above technical solutions, the long service life and comprehensive performance of the protective structure are ensured from the material source, and the synergistic protection of structure and materials is achieved.

[0020] In summary, this application has the following beneficial technical effects: the most corrosion-prone connecting parts, screws, connecting holes, etc. of the busbar are completely encapsulated in an independent sealed cavity, which fundamentally isolates the contact between salt spray and the connecting parts, achieving targeted protection. Its detachable characteristics facilitate daily inspection and maintenance. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of 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.

[0022] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0023] Figure 2 This is a schematic diagram of the protective box structure in this embodiment;

[0024] Figure 3 This is a schematic diagram of the connection structure between the protective box and the busbar in this embodiment;

[0025] Figure 4 for Figure 3 A magnified structural diagram of A in the diagram.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Connecting part; 2. Insulating part; 3. Connecting hole; 4. Top cover; 5. Bottom cover; 6. Fastening screw; 7. Buckle; 8. Positioning flange; 9. Through opening; 10. Slot; 11. Guide slope; 12. Drain hole; 13. Annular sealing rib; 14. Elastic sealing gasket. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0030] A salt spray corrosion resistant busbar protection structure includes a busbar body, which has an insulating part 2 and a connecting part 1. The connecting part 1 has a connecting hole 3, and a fastening screw 6 for electrical connection is inserted through the connecting hole 3. The structure also includes a protective box for encapsulating the connecting part 1. The protective box consists of a detachably connected upper cover 4 and a lower cover 5, forming a hollow cavity. The upper cover 4 and the lower cover 5 have through openings 9 on their opposite side walls for the insulating part 2 of the busbar body to pass through. The upper cover 4 and the lower cover 5 are sealed together by a buckle 7 and a slot 10 structure located on their edges.

[0031] When in use, once the protective box is closed, the enclosed cavity it forms completely encloses the connection points between the two busbars that are most prone to electrochemical corrosion. External air cannot directly contact these metal components, thus fundamentally inhibiting corrosion. When maintenance or torque measurement of the connection points is required, simply pry open the clip 7 by hand to separate the top cover 4. The operation is extremely simple, and the protective state can be quickly restored after maintenance. This effectively reduces the problem of easy corrosion of the busbars in salt spray environments, and combines excellent protection, convenient maintainability, and long-term reliability.

[0032] Both the upper cover 4 and the lower cover 5 have an inwardly protruding annular sealing ribs 13 on their inner surfaces. The positions of the annular sealing ribs 13 correspond to the exposed rods of the fastening screws 6 at both ends of the connecting hole 3. When the upper cover 4 and the lower cover 5 are sealed together by the snap-fit ​​structure 7, the annular sealing ribs 13 on both sides are precisely pressed against the periphery of the fastening screws 6, thereby forming an effective seal at the connection between the fastening screws 6 and the connecting hole 3. This further prevents moisture from contacting the connection, effectively supplementing and strengthening the overall seal of the protective box, and ensuring the safety of the weakest link.

[0033] The upper cover 4 extends downward to form a positioning flange 8. When the upper cover 4 and the lower cover 5 are closed, the positioning flange 8 covers the outer edge of the lower cover 5. During the closing process, the positioning flange 8 plays a guiding role, which can automatically guide the upper cover 4 and the lower cover 5 to be accurately aligned. This effectively avoids the problems of misalignment of the buckle 7 and the slot 10, failure to lock or poor sealing caused by misalignment in front and back or left and right. It achieves blind assembly effect and greatly improves assembly efficiency.

[0034] The bottom of the lower cover 5 has a drain hole 12, and the inner bottom wall of the lower cover 5 has an inclined guide slope 11. The lowest point of the guide slope 11 is connected to the drain hole 12. Once condensate or other liquids enter the protective box through the gaps, they will flow naturally to the inner bottom wall of the lower cover 5. At this time, the guide slope 11 will immediately play its role, relying on gravity to automatically guide the liquid to the drain hole 12 at the lowest point, and finally be discharged out of the box smoothly, thus improving the long-term reliability and safety of the protection.

[0035] An elastic sealing gasket 14 is embedded in the inner wall of the through opening 9. The inner edge of the elastic sealing gasket 14 is adapted to the shape of the busbar body insulation part 2. When the upper cover 4 and the lower cover 5 are closed, the elastic sealing gasket 14 will contact the surface of the busbar insulation part 2 before other structures. Under pressure, the inner edge of the elastic sealing gasket 14 and the busbar body insulation part 2 will produce significant elastic deformation, tightly wrapping and adhering to the surface of the insulation part 2. This flexible contact can perfectly compensate for the unevenness of the busbar surface caused by processing or coating, as well as the assembly gap caused by tolerance.

[0036] The protective box is made of corrosion-resistant engineering plastic. Engineering plastic can maintain good dimensional stability in high temperature and high humidity environments, avoiding poor sealing or loosening of buckles due to thermal expansion and contraction. The plastic material itself is an excellent insulator, which provides additional electrical insulation protection for the busbar connection points and improves safety.

[0037] The implementation principle of this embodiment is as follows: When the protective box is closed, the sealed cavity it forms completely encloses the connection point between the two busbars that is most prone to electrochemical corrosion. The annular sealing ribs 13 on both sides are precisely pressed against the periphery of the fastening screws 6, thereby forming an effective seal at the connection between the screws and the connection hole 3. External air cannot directly contact these metal parts, thus fundamentally inhibiting the occurrence of corrosion. When it is necessary to inspect or measure the torque of the connection point, the top cover 4 can be separated simply by prying open the buckle 7 by hand. The operation is extremely simple. After the inspection is completed, the protective state can be quickly restored, effectively reducing the problem of easy corrosion of the busbars in the salt spray environment.

[0038] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A salt spray corrosion resistant busbar protection structure, comprising a busbar body, the busbar body having an insulating part (2) and a connecting part (1), the connecting part (1) having a connecting hole (3), and a fastening screw (6) for electrical connection passing through the connecting hole (3), characterized in that: It also includes a protective box for encapsulating the connecting part (1). The protective box consists of a detachably connected upper cover (4) and a lower cover (5) to form a hollow cavity. The upper cover (4) and the lower cover (5) have through openings (9) on their opposite side walls for the insulation part (2) of the busbar body to pass through. The upper cover (4) and the lower cover (5) are sealed together by a buckle (7) and a slot (10) structure on their edges.

2. The salt spray corrosion resistant busbar protection structure according to claim 1, characterized in that: The lower cover (5) extends downward to form a positioning flange (8). When the upper cover (4) and the lower cover (5) are closed, the positioning flange (8) covers the outer edge of the upper cover (4).

3. The salt spray corrosion resistant busbar protection structure according to claim 1, characterized in that: The inner surfaces of the upper cover (4) and the lower cover (5) are provided with an inwardly protruding annular sealing ribs (13). The position of the annular sealing ribs (13) corresponds to the rods of the fastening screws exposed at both ends of the connecting hole (3). When the upper cover (4) and the lower cover (5) are closed, the annular sealing ribs (13) on both sides are tightly pressed against the periphery of the fastening screws (6).

4. The salt spray corrosion resistant busbar protection structure according to claim 1, characterized in that: The bottom of the lower cover (5) is provided with a drainage hole (12).

5. The salt spray corrosion resistant busbar protection structure according to claim 4, characterized in that: The inner bottom wall of the lower cover (5) is provided with an inclined guide slope (11), and the lowest point of the guide slope (11) is connected to the drain hole (12).

6. The salt spray corrosion resistant busbar protection structure according to claim 1, characterized in that: The inner wall of the through opening (9) has an elastic sealing gasket (14) that is adapted to the shape of the busbar body insulation part (2).

7. The salt spray corrosion resistant busbar protection structure according to claim 1, characterized in that: The protective box is made of corrosion-resistant engineering plastic.

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