A tubular bus duct

Abstract

The utility model discloses a tubular bus duct belongs to bus duct technical field. Including the conductor, the conductor's outside sleeve joint is equipped with the insulating layer, the both ends of conductor are equipped with the connecting head, the connecting head all is equipped with a plurality of first connecting hole, the sleeve joint is equipped with the closed sleeve pipe on the insulating layer, the closed sleeve includes two mirror image splicing's conical tube, the inside diameter of conical tube and the outside diameter of insulating layer match, the outer surface of conical tube is conical and is arranged, and two conical tube's small diameter end splicing arrangement is set up, and the first extrusion ring and the second extrusion ring are respectively set up on two conical tube sleeve joint, be equipped with threaded pipe on the first extrusion ring, be equipped with threaded sleeve on the second extrusion ring, the threaded sleeve is screwed on threaded pipe, the diameter of first extrusion ring and second extrusion ring all less than the diameter of conical tube big diameter end's diameter. The scheme is used to improve the waterproof effect at the connecting part of adjacent tubular bus duct.

Description

Technical Field

[0001] This utility model belongs to the field of busbar technology, specifically relating to a tubular busbar. Background Technology

[0002] Tubular busbars (also known as "tubular busbars" or "fully insulated tubular busbars") are enclosed high-current transmission devices that use hollow copper or aluminum tubes as current-carrying conductors, are covered with a solid insulation layer, and then encased in a metal or composite shell. Tubular busbars are usually supplied in standard 2-3 m sections, and multiple sections are then connected at their ends during on-site construction.

[0003] In existing technologies, after the connection is completed, a sleeve is usually installed on the connection point to cover and shield the connection point, thereby playing a certain role in dust and water protection. However, in actual use, the sealing method of the sleeve has shortcomings. In order to facilitate the installation of the sleeve, the sleeve is slidably set on the outer surface of the tubular busbar trunking. Therefore, the contact pressure between the sleeve and the outer surface of the tubular busbar trunking is small. As a result, for tubular busbar trunking installed outdoors, rainwater or dew can slowly seep into the connection point through the gap between the sleeve and the surface of the tubular busbar trunking, causing the operation of the connection point to be affected. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a tubular busbar trunking to improve the waterproof effect at the connection between adjacent tubular busbar trunking and improve the performance of the tubular busbar trunking.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A tubular busbar trunking includes a conductor, an insulating layer sleeved on the outer side of the conductor, and connectors at both ends of the conductor. Each connector has several first connecting holes. A closed sleeve is sleeved on the insulating layer. The closed sleeve includes two mirror-joined tapered tubes. The inner diameter of the tapered tubes matches the outer diameter of the insulating layer. The outer surface of the tapered tubes is tapered, and the smaller diameter ends of the two tapered tubes are joined together. A first extrusion ring and a second extrusion ring are respectively sleeved on the two tapered tubes. The first extrusion ring has a threaded tube, and the second extrusion ring has a threaded sleeve. The threaded sleeve is threaded to the threaded tube. The diameters of the first extrusion ring and the second extrusion ring are both smaller than the diameter of the larger diameter end of the tapered tube.

[0007] Furthermore, the tapered tube is a rubber tube, and a sealing ring is provided on the inner wall of the large-diameter end of the rubber tube, the inner diameter of which matches the outer diameter of the insulating layer.

[0008] Furthermore, it also includes a connecting component, which includes a U-shaped plate with a plurality of through-holes for second connecting holes. Each of the plurality of second connecting holes is provided with a connecting pin, which is slidably disposed within the second connecting holes. One end of each of the plurality of connecting pins is provided with a mounting plate, which is fixed to the end of the plurality of connecting pins. Both ends of the mounting plate are provided with limiting springs, one end of which is fixed to the U-shaped plate and the other end of which is fixed to the mounting plate.

[0009] Furthermore, the surface of the mounting plate away from the U-shaped plate is arc-shaped, and under the action of the limiting spring, the arc-shaped surface of the mounting plate is in close contact with the inner wall of the tapered tube.

[0010] Furthermore, the distance between the two ends of the U-shaped plate matches the thickness of the connector.

[0011] Furthermore, the inner wall of the tapered tube is provided with anti-slip texture.

[0012] Furthermore, a retaining ring is provided on the insulating layer, and the retaining ring contacts the large-diameter end of the tapered tube.

[0013] The beneficial effects of this utility model are as follows:

[0014] This technical solution uses a first extrusion ring and a second extrusion ring to extrude the end of the tapered tube, making it tightly contact the insulating layer. This achieves compression and fixation, preventing the tapered tube from sliding off, and also extrudes and seals the contact surface between the tapered tube and the insulating layer, thereby achieving waterproofing and improving the waterproofing effect.

[0015] Other advantages, objectives, and features of this invention will be set forth in the following description and will be apparent to those skilled in the art to some extent, or may be learned by practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0016] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0017] Figure 1 This is a three-dimensional schematic diagram of the tubular busbar trunking of this utility model;

[0018] Figure 2 This is an exploded view of the tubular busbar trunking of this utility model;

[0019] Figure 3 This is a schematic internal sectional view of the tubular busbar trunking of this utility model.

[0020] The following labels are shown in the attached diagram:

[0021] 1. Conductor; 2. Insulation layer; 3. Connector; 4. First connecting hole; 5. U-shaped plate; 6. Second connecting hole; 7. Connecting pin; 8. Mounting plate; 9. Tapered tube; 10. First compression ring; 11. Threaded sleeve; 12. Threaded tube; 13. Limiting spring; 14. Second compression ring. Detailed Implementation

[0022] like Figures 1-3 As shown, a tubular busbar trunking includes a conductor 1, which can be understood as a copper tube. An insulating layer 2, made of insulating material, is sleeved on the outer side of the conductor 1 and fitted onto the copper tube. Connectors 3 are provided at both ends of the conductor 1. The connectors 3 can be configured by flattening the ends of the copper tube. Each connector 3 has several first connecting holes 4 (two in this specific embodiment). A closed sleeve is fitted onto the insulating layer 2. The closed sleeve includes two mirror-connected tapered tubes 9. The inner diameter of the tapered tubes 9 matches the outer diameter of the insulating layer 2, enabling… To achieve a perfect fit and ensure installation effectiveness, the outer surface of the tapered tube 9 is tapered, with varying outer wall thicknesses to facilitate subsequent compression and bonding operations. The smaller diameter ends of the two tapered tubes 9 are joined together. A first compression ring 10 and a second compression ring 14 are respectively fitted onto the two tapered tubes 9. The first compression ring 10 has a threaded tube 12, and the second compression ring 14 has a threaded sleeve 11, which is threadedly connected to the threaded tube 12. The diameters of both the first compression ring 10 and the second compression ring 14 are smaller than the diameter of the larger diameter end of the tapered tube 9.

[0023] The working principle of the above technical solution is as follows:

[0024] During the installation of the tubular busbar trunking, the connectors 3 at the ends of the two tubular busbar trunking sections are aligned and fixed together. Then, the tapered tube 9 is slid from one tubular busbar trunking section to the other, completely covering the connection area. By rotating the threaded sleeve 11, the relative distance between the threaded sleeve 11 and the threaded tube 12 is adjusted, which in turn drives the first compression ring 10 and the second compression ring 14 to move towards the larger diameter ends of the two tapered tubes 9 until the inner walls of the first compression ring 10 and the second compression ring 14 are in close contact with the outer walls of the tapered tubes 9. During the close contact process, the inner walls of the first compression ring 10 and the second compression ring 14 apply a force to the tapered tube 9, thereby pressurizing the end of the tapered tube 9 to make close contact with the insulating layer 2, thus achieving compression and fixation. This prevents the tapered tube 9 from sliding off and also compresses and seals the contact surface between the tapered tube 9 and the insulating layer 2, thereby achieving waterproofing and improving the waterproofing effect. It is easy to understand that by setting the threaded tube 12 and the threaded sleeve 11, the position of the tapered tube 9 can be quickly compressed and fixed, and a seal can be achieved through compression.

[0025] In one feasible embodiment, the tapered tube 9 is a rubber tube, and a sealing ring is provided on the inner wall of the large-diameter end of the rubber tube. The inner diameter of the sealing ring matches the outer diameter of the insulating layer 2. The rubber tube material can be squeezed and bonded to achieve a seal. At the same time, the sealing ring can further improve the effect of compression sealing.

[0026] In one feasible embodiment, a connecting assembly is also included. The connecting assembly includes a U-shaped plate 5 with a plurality of through-holes 6 for second connecting holes 6. Each of the plurality of second connecting holes 6 has a connecting pin 7 which is slidably disposed within the second connecting holes 6. One end of each of the plurality of connecting pins 7 is provided with a mounting plate 8 which is fixed to the end of the plurality of connecting pins 7. Both ends of the mounting plate 8 are provided with limiting springs 13, one end of which is fixed to the U-shaped plate 5 and the other end of which is fixed to the mounting plate 8.

[0027] The working principle of the above technical solution is as follows:

[0028] When the connectors 3 of two tubular busbar trunking sections are positioned opposite each other, the connecting pins 7 are first pulled out of the cavity of the U-shaped plate 5 by manually overcoming the resistance of the limiting spring 13. Then, the U-shaped plate 5 is inserted into the connector 3 through the notch, aligning the first connecting hole 4 and the second connecting hole 6. Next, the mounting plate 8 is released, allowing several connecting pins 7 to be inserted into the first connecting hole 4 and the second connecting hole 6 respectively, thus connecting the two tubular busbar trunking sections. This method is simple to operate, highly efficient, and fast. The limiting spring 13 prevents the connecting pins 7 from dislodging due to vibration. Simultaneously, the mounting plate 8 allows several connecting pins 7 to be pulled out and inserted synchronously, further improving the connection speed.

[0029] In one feasible embodiment, the surface of the mounting plate 8 away from the U-shaped plate 5 is arc-shaped, and under the action of the limiting spring 13, the arc-shaped surface of the mounting plate 8 is in close contact with the inner wall of the tapered tube 9. That is, after the tapered tube 9 is installed, the surface of the mounting plate 8 is in contact with the inner wall of the tapered tube 9, at which time the limiting spring 13 is in a compressed state. That is, the movement of the limiting pin is blocked by the resistance of the inner wall of the tapered tube 9 and the fiber spring, thereby further avoiding the problem of the limiting pin coming out, and to a certain extent avoiding the problem of vibration of the connecting pin 7.

[0030] In one feasible embodiment, the distance between the two ends of the U-shaped plate 5 matches the thickness of the connector 3. That is, the thickness is consistent, resulting in better contact after assembly, better conductivity, and less susceptibility to relative vibration.

[0031] In one feasible approach, the inner wall of the tapered tube 9 is provided with anti-slip texture to further enhance the effect of compression and fixation.

[0032] In one feasible embodiment, a retaining ring is provided on the insulating layer 2, which contacts the large-diameter end of the tapered tube 9 to block the movement of the end of the tapered tube 9 and prevent the tapered tube 9 from slipping on the insulating layer 2 due to vibration.

[0033] It should be noted that the structure and components of tubular busbar trunking are existing technologies and will not be elaborated upon here. For example, existing tubular busbar trunking should include: conductor 1 (busbar), usually a hollow copper or aluminum tube, which carries current and has low skin effect and high current carrying capacity; insulation layer 2, wrapped around conductor 1, commonly made of PVC, cross-linked polyethylene, epoxy resin, etc., which serves as insulation and temperature resistance; shielding layer, made of semi-conductive material or metal braided mesh, used to balance the electric field distribution and prevent partial discharge; outer shell (sheath), usually made of metal (aluminum or steel) or high-strength plastic, providing mechanical protection, fire resistance, moisture resistance, and corrosion resistance; connectors / joints, including terminals, connectors, plug boxes, etc., used for inter-section connection, branching, or system expansion.

[0034] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A tubular busbar trunking system, comprising a conductor, an insulating layer sleeved on the outer side of the conductor, and connectors at both ends of the conductor, each connector having a plurality of first connection holes, characterized in that: A closed sleeve is fitted onto the insulating layer. The closed sleeve includes two mirror-joined tapered tubes. The inner diameter of the tapered tubes matches the outer diameter of the insulating layer. The outer surface of the tapered tubes is tapered, and the smaller diameter ends of the two tapered tubes are joined together. A first extrusion ring and a second extrusion ring are respectively fitted onto the two tapered tubes. The first extrusion ring has a threaded tube, and the second extrusion ring has a threaded sleeve. The threaded sleeve is threaded onto the threaded tube. The diameters of the first extrusion ring and the second extrusion ring are both smaller than the diameter of the larger diameter end of the tapered tube.

2. The tubular busbar trunking according to claim 1, characterized in that: The tapered tube is a rubber tube, and a sealing ring is provided on the inner wall of the large-diameter end of the rubber tube. The inner diameter of the sealing ring matches the outer diameter of the insulation layer.

3. A tubular busbar trunking system according to claim 1, characterized in that: It also includes a connecting component, which includes a U-shaped plate with a plurality of through-holes for second connecting holes. Each of the plurality of second connecting holes has a connecting pin, which is slidably disposed within the second connecting holes. One end of each of the connecting pins has a mounting plate, which is fixed to the end of the connecting pins. Both ends of the mounting plate have limiting springs, one end of which is fixed to the U-shaped plate and the other end of which is fixed to the mounting plate.

4. A tubular busbar trunking system according to claim 3, characterized in that: The surface of the mounting plate away from the U-shaped plate is arc-shaped, and under the action of the limiting spring, the arc-shaped surface of the mounting plate is in close contact with the inner wall of the tapered tube.

5. A tubular busbar trunking system according to claim 3, characterized in that: The distance between the two ends of the U-shaped plate matches the thickness of the connector.

6. A tubular busbar trunking system according to claim 1, characterized in that: The inner wall of the tapered tube is provided with anti-slip texture.

7. A tubular busbar trunking system according to claim 1, characterized in that: The insulating layer is provided with a retaining ring, which contacts the large-diameter end of the tapered tube.

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