Bus duct connection structure

Abstract

The utility model discloses a bus duct connection structure, which comprises a jack box main body and a bus duct main body, one side of the jack box main body is provided with a jack gap, the jack box main body is provided with a first coaming around the jack gap, and the inner side of the first coaming is provided with a sealing groove; a second surrounding plate is arranged at the end part of the bus duct main body in a surrounding manner, and after the bus duct main body is inserted, the second surrounding plate is in contact with the first surrounding plate. According to the scheme, the first coaming and the second coaming are in nested contact, and the sealing groove in which the high-elasticity sealing strip can be embedded is combined, so that micro gaps can be filled under the action of extrusion deformation after plugging, dual sealing of coaming sealing and flexible sealing is formed, dust and moisture permeation is effectively resisted, and the sealing performance of the bus duct after plugging is improved.

Description

Technical Field

[0001] This utility model relates to the field of busbar technology, and in particular to a busbar connection structure. Background Technology

[0002] The sealing performance of the connection between the busbar trunking and the plug-in box is a key factor affecting the safety and stability of the power transmission system. Traditional busbar trunking connection structures often use a simple plug-in mating method, and the contact surface between the plug-in box and the busbar trunking lacks an effective sealing design, relying solely on rubber gaskets or filler for external sealing.

[0003] The following problems exist with this type of solution: (1) The gap between the plug and the mat is easily affected by installation errors or long-term vibration, which leads to aging and falling off of the sealing material. External pollutants such as dust and moisture can easily invade the connection part, causing conductor oxidation or short circuit risk; (2) The existing sealing structure is mostly a flat pressing type, which is difficult to adapt to the dynamic deformation during the plugging process of the bus trunking and the plug box, and the sealing reliability is insufficient. Utility Model Content

[0004] The purpose of this invention is to overcome the problems of poor sealing performance and dynamic deformation in existing busbar trunking connections, and to provide a busbar trunking connection structure.

[0005] A busbar trunking connection structure includes a plug-in box body and a busbar trunking body. A plug-in notch is provided on one side of the plug-in box body. A first enclosure plate is provided around the plug-in notch, and a sealing groove is provided on the inner side of the first enclosure plate. A second enclosure plate is provided around the end of the busbar trunking body. After the busbar trunking body is plugged in, the second enclosure plate contacts the first enclosure plate.

[0006] Furthermore, an L-shaped frame is integrally provided on the outer side of the second enclosure, and a snap-fit ​​groove is formed between the L-shaped frame and the second enclosure; the first enclosure is inserted into the snap-fit ​​groove.

[0007] Furthermore, a second protrusion is provided on the inner side of the first enclosure, and the end of the second enclosure contacts the upper surface of the second protrusion.

[0008] Furthermore, a first pad is provided on the outside of the first enclosure; a second pad is provided on the outside of the L-shaped frame; the first pad and the second pad are arranged with their orthogonal projections overlapping.

[0009] Furthermore, the first pad is provided with a threaded groove; the second pad is provided with a threaded hole; the second pad is provided with a corresponding threaded groove.

[0010] The beneficial effects of this utility model are: by nesting the first enclosure plate and the second enclosure plate together, and combining them with a sealing groove into which a high-elasticity sealing strip can be embedded, the micro gaps can be filled under the action of compression deformation after insertion, forming a double seal of enclosure plate sealing and flexible sealing, which effectively resists the penetration of dust and moisture and improves the sealing performance of the busbar trunking after insertion. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the connection structure of this device;

[0012] Figure 2 This is a schematic diagram of the main structure of the busbar trunking;

[0013] Figure 3 This is a schematic diagram of the main structure of the plug-in box;

[0014] Figure 4 This is a schematic diagram of the cross-sectional structure of the device;

[0015] In the figure, 1-busbar trunking body, 10-second enclosure plate, 11-L-shaped frame, 12-second pad plate, 13-threaded hole, 14-snap slot, 2-plug box body, 20-plug notch, 21-first enclosure plate, 22-sealing groove, 23-second boss, 24-first pad plate, 25-threaded groove. Detailed Implementation

[0016] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0017] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0018] Example 1

[0019] like Figures 1-4 As shown, a busbar trunking connection structure includes a plug-in box body 2 and a busbar trunking body 1. In this solution, a plug-in notch 20 is provided on one side of the plug-in box body 2. The plug-in box body 2 and the busbar trunking body 1 are existing technologies and will not be described in detail here.

[0020] The main body 2 of the plug-in box is surrounded by a first enclosure 21 around the plug-in notch 20, and a sealing groove 22 is provided on the inner side of the first enclosure 21. The end of the busbar trunking main body 1 is surrounded by a second enclosure 10. After the busbar trunking main body 1 is plugged in, the second enclosure 10 contacts the first enclosure 21. Specifically, the external dimensions of the second enclosure 10 are the same as the internal dimensions of the first enclosure 21. In use, a sealing ring is embedded in the sealing groove 22. The nested contact between the first enclosure 21 and the second enclosure 10 forms a first mechanical sealing barrier, which directly blocks external pollutants through physical adhesion. At the same time, a highly elastic sealing strip can be embedded in the sealing groove 22 on the inner side of the first enclosure. After plugging in, the strip is compressed and deformed to fill the microscopic gaps, forming a second flexible sealing layer, which effectively resists the penetration of dust and moisture.

[0021] An L-shaped frame 11 is integrally formed on the outer side of the second enclosure 10, and a snap-fit ​​groove 14 is formed between the L-shaped frame 11 and the second enclosure 10; the first enclosure 21 is inserted into the snap-fit ​​groove 14. The snap-fit ​​groove 14 formed by the L-shaped frame 11 and the second enclosure 10 precisely limits the first enclosure 21, preventing axial displacement of the plug-in box body 2 and the busbar trunking body 1 due to vibration, thereby preventing sealing failure caused by misalignment of the sealing interface. The "L"-shaped cross-section design of the snap-fit ​​groove further increases the tortuosity of the contaminant intrusion path and improves sealing durability.

[0022] A second boss 23 is also provided on the inner side of the first enclosure plate 21, and the end of the second enclosure plate 10 contacts the upper surface of the second boss 23. The contact between the second boss 23 and the end face of the second enclosure plate provides rigid support in the vertical direction for the enclosure plate, ensuring that the pressure on the contact surface between the first enclosure plate 21 and the second enclosure plate 10 is evenly distributed after insertion, avoiding local sealing failure; at the same time, the second boss 23 can compensate for manufacturing tolerances and ensure the consistency of the compression of the sealing material in the sealing groove 22.

[0023] A first pad 24 is also provided on the outside of the first enclosure 21; a second pad 12 is also provided on the outside of the L-shaped frame 11; the first pad 24 and the second pad 12 are arranged with their orthogonal projections overlapping. The first pad 24 is provided with a threaded groove 25; the second pad 12 is provided with a threaded hole 13; the second pad 12 and the threaded groove 25 are correspondingly arranged. Through the design of the first pad 24 and the second pad 12 having their orthogonal projections overlapping, and with the bolt fastening of the threaded groove 25 and the threaded hole 13, a controllable axial clamping force can be applied after insertion, so that the sealing material in the sealing groove of the enclosure contact surface is further compacted, forming an active pressure-type third sealing defense line, which is especially suitable for long-term sealing maintenance under temperature difference deformation or vibration conditions.

[0024] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A busbar trunking connection structure, comprising a plug-in box body (2) and a busbar trunking body (1), wherein a plug-in notch (20) is provided on one side of the plug-in box body (2), characterized in that: The plug-in box body (2) is provided with a first enclosure plate (21) around the plug-in notch (20), and a sealing groove (22) is provided on the inner side of the first enclosure plate (21); the end of the busbar trunking body (1) is provided with a second enclosure plate (10), and after the busbar trunking body (1) is plugged in, the second enclosure plate (10) contacts the first enclosure plate (21).

2. The busbar trunking connection structure according to claim 1, characterized in that: An L-shaped frame (11) is integrally provided on the outer side of the second enclosure (10), and a snap-fit ​​groove (14) is formed between the L-shaped frame (11) and the second enclosure (10); the first enclosure (21) is inserted into the snap-fit ​​groove (14).

3. The busbar trunking connection structure according to claim 1, characterized in that: The inner side of the first enclosure (21) is also provided with a second boss (23), and the end of the second enclosure (10) is in contact with the upper surface of the second boss (23).

4. The busbar trunking connection structure according to claim 2, characterized in that: The first enclosure (21) is further provided with a first pad (24); the L-shaped frame (11) is further provided with a second pad (12); the first pad (24) and the second pad (12) are arranged to overlap in orthographic projection.

5. The busbar trunking connection structure according to claim 4, characterized in that: The first pad (24) is provided with a threaded groove (25); the second pad (12) is provided with a threaded hole (13); the second pad (12) is provided with a corresponding threaded groove (25).

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