A medium voltage cabinet inner tube type busbar connecting end head insulation wrapping structure

Abstract

The utility model discloses a kind of medium voltage cabinet inner tubular busbar connecting end insulating wrapping structures, including tubular busbar, adjacent tubular busbar is connected by insertion, and is locked and connected by locking bolt and locking nut, and the connecting end head between adjacent tubular busbar is provided with inner insulation wrapping collet, the outside of inner insulation wrapping collet is provided with outer protective wrapping collet assembly, the utility model is connected by insertion between adjacent tubular busbar through center plugboard, side plugboard, center slot and side slot, and is locked and connected by locking bolt and locking nut, improve tubular busbar connection stability and reliability, inner insulation wrapping collet and semicircular protective collet can effectively insulating wrapping is carried out to tubular busbar connecting end head, improve the insulating protection performance of tubular busbar connecting end head, sealing ring can prevent water vapor and dust into tubular busbar connecting end head, guarantee the electrical reliability of tubular busbar, and tubular busbar connecting end head insulating wrapping is neat.

Description

Technical Field

[0001] This utility model belongs to the technical field of medium-voltage switchgear tubular busbar connection, specifically relating to an insulation wrapping structure for the connection end of a medium-voltage switchgear tubular busbar. Background Technology

[0002] Tubular busbars are a type of busbar product that uses copper or aluminum alloy tubes as conductors and is externally insulated.

[0003] When tubular busbars are connected inside medium-voltage switchgear, the connection ends are often manually wrapped with insulating tape, which mainly relies on the worker's skill. This can easily lead to air bubbles, wrinkles, and uneven overlaps at the connection ends, resulting in air gaps or weak points inside. This makes them susceptible to moisture intrusion, causing problems such as insufficient insulation reliability, susceptibility to environmental influences, and limited service life at the connection ends of tubular busbars inside medium-voltage switchgear. To address these issues, we propose an insulation wrapping structure for the connection ends of tubular busbars inside medium-voltage switchgear. Utility Model Content

[0004] The purpose of this utility model is to provide an insulation wrapping structure for the connection end of the tubular busbar inside a medium-voltage switchgear, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an insulation wrapping structure for the connection end of a medium-voltage switchgear inner tubular busbar, comprising:

[0006] Tubular busbars are connected by plug-in joints and locked together by locking bolts and locking nuts;

[0007] An inner insulating wrapping sleeve is provided at the connection end between adjacent tubular busbars;

[0008] An outer protective wrapping jacket assembly is provided on the outside of the inner insulating wrapping jacket.

[0009] Preferably, the outer periphery of the tubular busbar is provided with an insulating sheath.

[0010] Preferably, a central insert plate is provided at one end of the tubular busbar, and side insert plates are provided on both sides of the central insert plate;

[0011] The other end of the tubular busbar is provided with a central slot, and side slots are provided on both sides of the central slot.

[0012] Adjacent tubular busbars are connected by the center insert plate, the side insert plate, the center slot, and the side slot.

[0013] Preferably, the center insert plate, the side insert plate, the center slot, and the side slot are all provided with bolt holes, and the locking bolt passes through the bolt holes and is locked to the locking nut.

[0014] Preferably, the inner insulating jacket is an open elastic insulating jacket.

[0015] Preferably, the inner insulating jacket is provided with an insert that fits into the connection end between the adjacent tubular busbar.

[0016] Preferably, the outer periphery of the inner insulating jacket is flush with the outer periphery of the insulating sheath.

[0017] Preferably, the outer protective package jacket assembly includes a semi-circular protective jacket and a sealing ring;

[0018] Two semicircular protective sleeves are provided. The two semicircular protective sleeves are set on the outside of the inner insulating sleeve through connecting pieces, connecting bolts and connecting nuts, and the two ends of the semicircular protective sleeves extend to the outer periphery of the insulating sheath on the outside of the adjacent tubular busbar.

[0019] The sealing rings are provided between the two ends of the semi-circular protective jacket and the insulating sheath.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] In this invention, adjacent tubular busbars are connected by a central insert plate, side insert plates, a central slot, and a side slot, and then locked together with locking bolts and nuts, improving the stability and reliability of the tubular busbar connection. An inner insulating sleeve is then wrapped around the connection end of the adjacent tubular busbars. Two semi-circular protective sleeves are then installed on the outside of the inner insulating sleeve using connecting pieces, connecting bolts, and connecting nuts. Sealing rings are installed between the two ends of the semi-circular protective sleeves and the insulating sheath. The inner insulating sleeve and the semi-circular protective sleeves effectively insulate the connection end of the tubular busbars, improving the insulation protection performance at the connection end. Simultaneously, the sealing rings prevent moisture and dust from entering the connection end of the tubular busbars, ensuring the electrical reliability of the tubular busbars. Furthermore, the insulation wrapping at the connection end of the tubular busbars is neat and free of wrinkles and bubbles, guaranteeing the connection and use of the tubular busbars. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the connection between the two tubular busbars of this utility model;

[0023] Figure 2 This is a schematic cross-sectional view of the connection between the two tubular busbars of this utility model;

[0024] Figure 3 This is a three-dimensional structural diagram of the tubular busbar of this utility model;

[0025] Figure 4 This is a three-dimensional structural diagram of the tubular busbar of this utility model;

[0026] Figure 5 This is a three-dimensional structural diagram of the inner insulating wrapping jacket of this utility model;

[0027] Figure 6 This is a three-dimensional structural diagram of the outer protective wrapping jacket assembly of this utility model;

[0028] Figure 7 for Figure 2 A magnified structural diagram of A in the diagram.

[0029] In the diagram: 1. Tubular busbar; 2. Locking bolt; 3. Locking nut; 4. Inner insulating jacket; 5. Outer protective jacket assembly; 501. Semi-circular protective jacket; 502. Sealing ring; 503. Connecting piece; 504. Connecting bolt; 505. Connecting nut; 6. Insulating sleeve; 7. Center insert plate; 8. Side insert plate; 9. Center slot; 10. Side slot; 11. Bolt hole; 12. Insert block. Detailed Implementation

[0030] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-7 The insulating wrapping structure for the inner tubular busbar connection end of the medium-voltage switchgear provided by this utility model includes:

[0032] A tubular busbar 1 is provided with an insulating sheath 6 on its outer periphery. Adjacent tubular busbars 1 are connected by plugging and locking with locking bolts 2 and locking nuts 3. One end of the tubular busbar 1 is provided with a central insert plate 7, and side insert plates 8 are provided on both sides of the central insert plate 7. The other end of the tubular busbar 1 is provided with a central slot 9, and side slots 10 are provided on both sides of the central slot 9. Adjacent tubular busbars 1 are connected by plugging through the central insert plate 7, side insert plates 8, central slot 9 and side slots 10. Bolt holes 11 are provided on the central insert plate 7, side insert plates 8, central slot 9 and side slots 10. Locking bolts 2 pass through the bolt holes 11 and are locked with locking nuts 3.

[0033] An inner insulating wrapping sleeve 4 is provided at the connection end between adjacent tubular busbars 1. The inner insulating wrapping sleeve 4 is an open elastic insulating sleeve, which makes it easy for the inner insulating wrapping sleeve 4 to be sleeved and wrapped at the connection end of the adjacent tubular busbars 1. An insert 12 is provided inside the inner insulating wrapping sleeve 4 to fit into the connection end between the adjacent tubular busbars 1. The outer periphery of the inner insulating wrapping sleeve 4 is flush with the outer periphery of the insulating sheath 6.

[0034] The outer protective wrapping jacket assembly 5 is provided on the outside of the inner insulating wrapping jacket 4. The outer protective wrapping jacket assembly 5 includes a semi-circular protective jacket 501 and a sealing ring 502. There are two semi-circular protective jackets 501. The two semi-circular protective jackets 501 are provided on the outside of the inner insulating wrapping jacket 4 through a connecting piece 503, a connecting bolt 504 and a connecting nut 505. The two ends of the semi-circular protective jackets 501 extend to the outer periphery of the insulating sheath 6 on the outside of the adjacent tubular busbar 1. A sealing ring 502 is provided between the two ends of the semi-circular protective jackets 501 and the insulating sheath 6.

[0035] In this invention, adjacent tubular busbars 1 are connected by a central insert plate 7, a side insert plate 8, a central slot 9, and a side slot 10, and locked together by locking bolts 2 and locking nuts 3, improving the stability and reliability of the tubular busbar connection. Then, an inner insulating sleeve 4 is wrapped around the connection end of the adjacent tubular busbars 1. Two semi-circular protective sleeves 501 are then installed on the outside of the inner insulating sleeve 4 using connecting pieces 503, connecting bolts 504, and connecting nuts 505. Sealing rings 502 are installed between the two ends of the semi-circular protective sleeves 501 and the insulating sheath 6. The inner insulating sleeve 4 and the semi-circular protective sleeves 501 effectively insulate the connection end of the tubular busbars 1, improving the insulation protection performance at the connection end. Simultaneously, the sealing rings 502 prevent moisture and dust from entering the connection end of the tubular busbars 1, ensuring the electrical reliability of the tubular busbars. Furthermore, the insulation wrapping at the connection end of the tubular busbars 1 is neat and free of wrinkles and bubbles, ensuring the connection and use of the tubular busbars.

[0036] In summary, the method of using the insulation wrapping structure for the connection end of the tubular busbar in the medium-voltage switchgear provided in this embodiment is as follows: adjacent tubular busbars 1 are connected by inserting a central insert plate 7, a side insert plate 8, a central slot 9, and a side slot 10, and are locked by locking bolts 2 and locking nuts 3. Then, an inner insulation wrapping jacket 4 is wrapped around the connection end of the adjacent tubular busbars 1. Then, two semi-circular protective jackets 501 are installed on the outside of the inner insulation wrapping jacket 4 by connecting pieces 503, connecting bolts 504, and connecting nuts 505. A sealing ring 502 is installed between the two ends of the semi-circular protective jacket 501 and the insulating sleeve 6. The inner insulation wrapping jacket 4 and the semi-circular protective jacket 501 can effectively insulate the connection end of the tubular busbar 1.

[0037] 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. An insulation wrapping structure for the connection end of a tubular busbar inside a medium-voltage switchgear, characterized in that, include: Tubular busbars (1) are connected by plugging in adjacent tubular busbars (1) and are locked in place by locking bolts (2) and locking nuts (3); An inner insulating jacket (4) is provided at the connection end between adjacent tubular busbars (1). The outer protective wrapping jacket assembly (5) is provided on the outside of the inner insulating wrapping jacket (4).

2. The insulation wrapping structure for the inner tubular busbar connection end of a medium-voltage switchgear according to claim 1, characterized in that: An insulating sheath (6) is provided on the outer periphery of the tubular busbar (1).

3. The insulation wrapping structure for the inner tubular busbar connection end of a medium-voltage switchgear according to claim 1, characterized in that: One end of the tubular busbar (1) is provided with a central insert plate (7), and both sides of the central insert plate (7) are provided with side insert plates (8). The other end of the tubular busbar (1) is provided with a central slot (9), and side slots (10) are provided on both sides of the central slot (9). The adjacent tubular busbars (1) are connected by the central insert plate (7), the side insert plate (8), the central slot (9) and the side slot (10).

4. The insulation wrapping structure for the inner tubular busbar connection end of a medium-voltage switchgear according to claim 3, characterized in that: Bolt openings (11) are provided on the central insert plate (7), the side insert plate (8), the central slot (9) and the side slot (10). The locking bolt (2) passes through the bolt opening (11) and is locked to the locking nut (3).

5. The insulation wrapping structure for the inner tubular busbar connection end of a medium-voltage switchgear according to claim 1, characterized in that: The inner insulating jacket (4) is an open elastic insulating jacket.

6. The insulation wrapping structure for the inner tubular busbar connection end of a medium-voltage switchgear according to claim 1, characterized in that: The inner insulating jacket (4) is provided with an insert (12) that fits into the connection end between the adjacent tubular busbar (1).

7. The insulation wrapping structure for the inner tubular busbar connection end of a medium-voltage switchgear according to claim 2, characterized in that: The outer periphery of the inner insulating jacket (4) is flush with the outer periphery of the insulating sheath (6).

8. The insulation wrapping structure for the inner tubular busbar connection end of a medium-voltage switchgear according to claim 7, characterized in that: The outer protective package jacket assembly (5) includes a semi-circular protective jacket (501) and a sealing ring (502). Two semicircular protective sleeves (501) are provided. The two semicircular protective sleeves (501) are set on the outside of the inner insulating wrapping sleeve (4) through connecting piece (503), connecting bolt (504) and connecting nut (505). The two ends of the semicircular protective sleeves (501) extend to the outer periphery of the insulating sheath (6) on the outside of the adjacent tubular busbar (1). The sealing ring (502) is provided between the two ends of the semi-circular protective jacket (501) and the insulating sleeve (6).

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