Bus-type wall bushing device

Abstract

The utility model belongs to the field of wall bushings, and particularly relates to a bus-type wall bushing device. Comprising an insulating tubular bus, a mounting assembly and two cold-shrink dry-type terminals, the middle part of the insulating tube type bus is mounted at a mounting opening of a target wall body through a mounting assembly and is connected with the mounting assembly through a grounding wire to realize grounding; the two ends of the insulating tubular bus are located on the two sides of a target wall body respectively; the two dry-type terminals are respectively sleeved on the insulating tubular bus and are respectively positioned on two sides of a target wall body; first intervals are respectively arranged between the inner ends of the two dry-type terminals and the corresponding side surfaces of the wall body, and second intervals are respectively arranged between the outer ends of the two dry-type terminals and the corresponding end parts of the insulating tubular bus; the two ends of the insulating tubular bus are respectively provided with a wiring terminal. According to the utility model, the two ends of the insulation tube type bus are respectively provided with one cold shrinkage type dry type terminal, thereby avoiding the leakage problem possibly existing in the traditional porcelain type terminal, and improving the stability and safety of the system.

Description

Technical Field

[0001] The utility model relates to a wall-penetrating bushing device, in particular to a bus-type wall-penetrating bushing device. Background Art

[0002] In the power system, as an important component for electric energy transmission, the insulated tubular bus has high safety, reliability and installation convenience, and has excellent insulation performance and mechanical strength. It is gradually replacing the original power connection equipment and becoming a new choice for electrical connection.

[0003] Traditional wall-penetrating bushings usually adopt the structure of a porcelain outer sleeve plus a copper bar. There are many inconveniences in the installation and maintenance of this structure of bushings, such as the umbrella skirt is easily knocked during transportation, resulting in scrapping, complex installation (time-consuming and laborious), poor sealing performance and other problems.

[0004] Therefore, how to combine the insulated tubular busbar with the dry-type terminal and how to effectively and safely fix it at the wall-penetrating installation plate has become an urgent problem to be solved. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the technical problems existing in the existing wall-penetrating bushing with a porcelain outer sleeve plus a copper bar, such as the umbrella skirt is easily knocked during transportation, resulting in scrapping, complex installation and poor sealing performance, and to provide a bus-type wall-penetrating bushing device.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A bus-type wall-penetrating bushing device, characterized in that:

[0008] It includes an insulated tubular busbar, an installation component and two cold-shrinkable dry-type terminals;

[0009] The middle part of the insulated tubular busbar is installed at the installation opening of the target wall through the installation component, and is connected to the installation component through a grounding wire to achieve grounding; both ends of the insulated tubular busbar are located on both sides of the target wall respectively;

[0010] The two dry-type terminals are respectively sleeved on the insulated tubular busbar and are located on both sides of the target wall respectively; a first interval is respectively arranged between the inner ends of the two dry-type terminals and the corresponding side surfaces of the wall, and a second interval is respectively arranged between the outer ends of the two dry-type terminals and the corresponding end parts of the insulated tubular busbar;

[0011] One wiring terminal is respectively arranged at both ends of the insulated tubular busbar for connecting to an external current.

[0012] Further, the installation component includes an upper installation part, a lower installation part, an upper fixing plate and a lower fixing plate;

[0013] The upper mounting piece, the lower mounting piece, the upper fixing plate and the lower fixing plate are all made of conductive materials; the upper mounting piece and the lower mounting piece are respectively arranged on the upper and lower sides of the middle part of the insulating tubular bus, and the upper mounting piece and the lower mounting piece are connected by bolts; the lower end of the upper fixing plate and the upper end of the lower fixing plate are correspondingly mounted on the upper mounting piece and the lower mounting piece, and the upper end of the upper fixing plate and the lower end of the lower fixing plate are respectively mounted on the inner wall of the target wall at the installation opening; the grounding wire is connected to the upper mounting piece or the lower mounting piece.

[0014] Further, the upper mounting piece and the lower mounting piece have the same structure and both include a mounting block and two mounting plates;

[0015] An arc-shaped groove adapted to the outer peripheral surface of the insulating tubular bus is arranged on one side of the mounting block, the two mounting plates are oppositely arranged on the other side of the mounting block, and a mounting interval adapted to the upper fixing plate and the lower fixing plate is arranged on the side where the two mounting plates are close to each other; the mounting blocks of the upper mounting piece and the lower mounting piece are respectively arranged on the upper and lower sides of the middle part of the insulating tubular bus through their respective arc-shaped grooves, and the mounting blocks of the upper mounting piece and the lower mounting piece are connected by bolts; the lower end of the upper fixing plate and the upper end of the lower fixing plate are respectively placed in the corresponding mounting intervals, and the two mounting plates of the upper mounting piece and the lower mounting piece are connected by bolts to correspondingly fix the upper fixing plate and the lower fixing plate.

[0016] Further, the upper end of the upper fixing plate and the lower end of the lower fixing plate are respectively mounted on the inner wall of the target wall at the installation opening through an angle iron.

[0017] Further, the insulating tubular bus includes a conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer, a metal shielding layer and an outer sheath; the dry-type terminal includes an inner shielding layer and an outer insulating layer; the conductor shielding layer and the insulating layer are extruded on the conductor in sequence from the inside to the outside, the outer insulating layer of the dry-type terminal is sleeved on the insulating layer of the insulating tubular bus, one end of the outer insulating layer of the dry-type terminal is shorter than the corresponding end of the conductor of the insulating tubular bus, so that the conductor presents an exposed section; the other end of the outer insulating layer of the dry-type terminal is shorter than the corresponding end of the insulating layer of the insulating tubular bus, so that the insulating layer presents an exposed section; the insulating shielding layer is sleeved on the exposed section of the insulating layer, and one end of it extends to the inside of the outer insulating layer; the inner shielding layer of the dry-type terminal is arranged inside the end of the outer insulating layer and overlaps the circumferential side of the part of the insulating shielding layer inside the outer insulating layer; the metal shielding layer and the outer sheath are sleeved on the exposed section of the insulating shielding layer in sequence from the inside to the outside, and one end of them is connected to the end of the outer insulating layer; the circumferential side of the metal shielding layer is connected to the grounding wire, the installation assembly is installed on the outer sheath, and the wiring terminal is arranged at the end of the exposed section of the conductor.

[0018] Further, the outer insulating layer is made of silicone rubber. The conductor is a copper pipe or an aluminum pipe. A wiring row is arranged on the circumferential side of the wiring terminal.

[0019] The beneficial effects of the utility model are:

[0020] 1. A dry-type terminal of the cold shrink type is respectively arranged at both ends of the insulating tubular busbar of the present utility model, avoiding the possible leakage problem of the traditional porcelain type terminal and improving the stability and safety of the system.

[0021] 2. The insulating tubular busbar of the present utility model can be fixedly installed on the target wall through the upper mounting member, the lower mounting member, the upper fixing plate, the lower fixing plate and the angle iron. The installation process is simple and the construction efficiency is relatively high.

[0022] 3. The outer insulating layer of the dry-type terminal of the present utility model is made of silicone rubber, which can avoid being damaged by bumps during transportation.

[0023] 4. When the umbrella skirt of the wall bushing device of the present utility model is damaged due to bumps, the umbrella skirt can be directly replaced without replacing the main body, which can avoid the wall bushing device being directly scrapped due to the damage of the umbrella skirt. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0025] Figure 2 is Figure 1 an enlarged view of part A in

[0026] In the figure:

[0027] 01 - Wall;

[0028] 1 - Insulating tubular busbar, 11 - Conductor, 12 - Conductor shielding layer, 13 - Insulating layer, 14 - Insulating shielding layer, 15 - Metal shielding layer, 16 - Outer sheath;

[0029] 2 - Installation assembly, 21 - Upper mounting member, 22 - Lower mounting member, 23 - Upper fixing plate, 24 - Lower fixing plate, 25 - Mounting block, 26 - Mounting plate, 27 - Angle iron;

[0030] 3 - Dry-type terminal, 31 - Inner shielding layer, 32 - Outer insulating layer;

[0031] 4 - Wiring terminal, 5 - Ground wire. Detailed Embodiment

[0032] To make the purpose, advantages and features of the present utility model clearer, the following further details a busbar type wall bushing device proposed by the present utility model in conjunction with the drawings and specific embodiments. According to the following detailed embodiments, the advantages and features of the present utility model will be clearer.

[0033] Refer to Figure 1 , a busbar type wall bushing device in this embodiment mainly includes an insulating tubular busbar 1, an installation assembly 2 and two dry-type terminals 3.

[0034] An installation opening for installing a bus type wall-through bushing device is provided on the target wall 01. The middle part of the insulated tubular bus 1 is installed at the installation opening of the target wall 01 through the installation assembly 2, and its two ends are respectively located on both sides of the target wall 01.

[0035] Specifically, the installation assembly 2 is mainly composed of an upper installation part 21 and a lower installation part 22 with the same structure, and an upper fixing plate 23 and a lower fixing plate 24 with the same structure.

[0036] Among them, both the upper installation part 21 and the lower installation part 22 include an installation block 25 and two installation plates 26; an arc-shaped groove adapted to the outer peripheral surface of the insulated tubular bus 1 is provided on one side of the installation block 25, the two installation plates 26 are oppositely arranged on the other side of the installation block 25, and an installation interval corresponding to and adapted to the upper fixing plate 23 and the lower fixing plate 24 is provided on the side where the two installation plates 26 are close to each other.

[0037] The installation blocks 25 of the upper installation part 21 and the lower installation part 22 are respectively arranged on the upper and lower sides of the middle part of the insulated tubular bus 1 through their respective arc-shaped grooves, and the installation blocks 25 of the upper installation part 21 and the lower installation part 22 are connected by a plurality of bolts, so as to clamp the insulated tubular bus 1; the lower end of the upper fixing plate 23 and the upper end of the lower fixing plate 24 are respectively placed in the corresponding installation intervals, the two installation plates 26 of the upper installation part 21 and the lower installation part 22 are connected by bolts, and the upper end of the upper fixing plate 23 and the lower end of the lower fixing plate 24 are respectively installed on the inner wall of the target wall 01 at the installation opening through an angle iron 27, so as to install the insulated tubular bus 1 on the target wall 01.

[0038] It should be noted that the specific structure of the above installation assembly 2 is only a preferred embodiment of the present utility model, and those skilled in the art can also select and design installation assemblies 2 with other structures according to actual installation needs, as long as an approximate installation effect can be achieved.

[0039] Two dry-type terminals 3 are respectively sleeved on the insulated tubular bus 1 and are respectively located on both sides of the target wall 01; a first interval is respectively provided between the inner ends of the two dry-type terminals 3 and the corresponding side surfaces of the wall 01, and a second interval is respectively provided between the outer ends of the two dry-type terminals 3 and the corresponding end parts of the insulated tubular bus 1. This terminal is closely attached to the insulated tubular bus 1 through the cold shrinkage principle, and dry-type terminals 3 of different sizes can be used according to the voltage level and different regions to meet the creepage distance on site. At the same time, the design of the dry-type terminal 3 also avoids the possible leakage problems of traditional porcelain-type terminals, and improves the overall structural stability and safety.

[0040] Specifically, refer to Figure 1 and Figure 2The insulated tubular busbar 1 includes a conductor 11 , a conductor shielding layer 12 , an insulating layer 13 , an insulating shielding layer 14 , a metal shielding layer 15 and an outer sheath 16 ; the dry-type terminal 3 includes an inner shielding layer 31 and an outer insulating layer 32 .

[0041] The conductor 11 is a copper or aluminum tube, and the conductor shielding layer 12 and insulating layer 13 are sequentially extruded onto the conductor 11, forming a tightly integrated structure. The outer insulating layer 32 of the dry-type terminal 3 is fitted over the insulating layer 13 of the insulated tubular busbar 1. One end of the outer insulating layer 32 of the dry-type terminal 3 is shorter than the corresponding end of the conductor 11 of the insulated tubular busbar 1, leaving a bare section of the conductor 11. The other end of the outer insulating layer 32 of the dry-type terminal 3 is shorter than the corresponding end of the insulating layer 13 of the insulated tubular busbar 1, leaving a bare section of the insulating layer 13. Preferably, the outer insulating layer 32 is made of silicone rubber to prevent damage from bumps during transportation.

[0042] The insulating shielding layer 14 is sleeved over the exposed section of the insulating layer 13, with one end thereof extending to the inside of the outer insulating layer 32. The inner shielding layer 31 of the dry terminal 3 is disposed inside the end of the outer insulating layer 32 and overlaps the circumference of the portion of the insulating shielding layer 14 located inside the outer insulating layer 32, thereby providing a suitable overlapping transition section between the inner shielding layer 31 and the insulating shielding layer 14, thereby uniformizing the electric field therein and distributing the electric field evenly, thereby avoiding electric field concentration and tip discharge.

[0043] The metal shielding layer 15 and the outer sheath 16 are sequentially mounted on the exposed section of the insulating shielding layer 14 from the inside to the outside, and one end thereof is connected to the end of the outer insulating layer 32; the mounting block 25 is arranged on the outer sheath 16, and the peripheral side of the metal shielding layer 15 is connected to one end of the grounding wire 5, and the other end of the grounding wire 5 is connected to the upper fixing plate 23 or the lower fixing plate 24. The upper mounting part 21, the lower mounting part 22, the upper fixing plate 23 and the lower fixing plate 24 are all made of conductive materials, thereby connecting the insulating tubular busbar 1 to the target wall 01 to achieve grounding.

[0044] A terminal 4 is provided at each end of the insulating tubular busbar 1, and a terminal block is cold-pressed around the terminal 4 according to the current size. The hole pitch of the terminal block is specifically set according to the needs for connecting to external current.

Claims

1. A busbar type wall bushing device, characterized in that: It includes an insulating tubular busbar (1), a mounting assembly (2) and two cold-shrinkable dry-type terminals (3); The middle part of the insulating tubular busbar (1) is mounted at the mounting opening of the target wall (01) through the mounting assembly (2), and is connected to the mounting assembly (2) through a grounding wire (5) to achieve grounding; both ends of the insulating tubular busbar (1) are located on both sides of the target wall (01); The two dry-type terminals (3) are respectively sleeved on the insulating tubular busbar (1) and are located on both sides of the target wall (01); a first gap is respectively provided between the inner ends of the two dry-type terminals (3) and the corresponding side surfaces of the wall (01), and a second gap is respectively provided between the outer ends of the two dry-type terminals (3) and the corresponding end parts of the insulating tubular busbar (1); One wiring terminal (4) is respectively provided at both ends of the insulating tubular busbar (1) for connecting external current.

2. The busbar type wall bushing device according to claim 1, characterized in that: The mounting assembly (2) includes an upper mounting member (21), a lower mounting member (22), an upper fixing plate (23) and a lower fixing plate (24); The upper mounting member (21), the lower mounting member (22), the upper fixing plate (23) and the lower fixing plate (24) are all made of conductive materials; The upper mounting member (21) and the lower mounting member (22) are respectively arranged on the upper and lower sides of the middle part of the insulating tubular busbar (1), and the upper mounting member (21) and the lower mounting member (22) are connected by bolts; The lower end of the upper fixing plate (23) and the upper end of the lower fixing plate (24) are correspondingly mounted on the upper mounting member (21) and the lower mounting member (22), and the upper end of the upper fixing plate (23) and the lower end of the lower fixing plate (24) are respectively mounted on the inner walls of the target wall (01) at the mounting opening; The grounding wire (5) is connected to the upper mounting member (21) or the lower mounting member (22).

3. The busbar type wall bushing device according to claim 2, characterized in that: The upper mounting member (21) and the lower mounting member (22) have the same structure and both include a mounting block (25) and two mounting plates (26); An arc-shaped groove adapted to the outer peripheral surface of the insulating tubular busbar (1) is provided on one side of the mounting block (25), the two mounting plates (26) are oppositely arranged on the other side of the mounting block (25), and a mounting gap adapted to the upper fixing plate (23) and the lower fixing plate (24) is provided on the side where the two mounting plates (26) are close to each other; The mounting blocks (25) of the upper mounting member (21) and the lower mounting member (22) are respectively arranged on the upper and lower sides of the middle part of the insulating tubular busbar (1) through their respective arc-shaped grooves, and the mounting blocks (25) of the upper mounting member (21) and the lower mounting member (22) are connected by bolts; The lower end of the upper fixing plate (23) and the upper end of the lower fixing plate (24) are respectively placed in the corresponding mounting gaps, and the two mounting plates (26) of the upper mounting member (21) and the lower mounting member (22) are connected by bolts to correspondingly fix the upper fixing plate (23) and the lower fixing plate (24).

4. A busbar type wall bushing device according to claim 3, characterized in that: The upper end of the upper fixing plate (23) and the lower end of the lower fixing plate (24) are respectively installed on the inner wall of the target wall (01) at the installation opening through an angle iron (27).

5. A busbar type wall bushing device according to any one of claims 1-4, characterized in that: The insulated tubular busbar (1) includes a conductor (11), a conductor shielding layer (12), an insulating layer (13), an insulation shielding layer (14), a metal shielding layer (15) and an outer sheath (16); The dry-type terminal (3) includes an inner shielding layer (31) and an outer insulating layer (32); The conductor shielding layer (12) and the insulating layer (13) are extruded on the conductor (11) in sequence from the inside to the outside. The outer insulating layer (32) of the dry-type terminal (3) is sleeved on the insulating layer (13) of the insulated tubular busbar (1), and one end of the outer insulating layer (32) of the dry-type terminal (3) is shorter than the corresponding end of the conductor (11) of the insulated tubular busbar (1), so that the conductor (11) presents an exposed section; the other end of the outer insulating layer (32) of the dry-type terminal (3) is shorter than the corresponding end of the insulating layer (13) of the insulated tubular busbar (1), so that the insulating layer (13) presents an exposed section; The insulation shielding layer (14) is sleeved on the exposed section of the insulating layer (13), and one end of it extends to the inside of the outer insulating layer (32); The inner shielding layer (31) is arranged inside the end of the outer insulating layer (32) and overlaps the circumference of the part of the insulation shielding layer (14) located inside the outer insulating layer (32); The metal shielding layer (15) and the outer sheath (16) are sleeved on the exposed section of the insulation shielding layer (14) in sequence from the inside to the outside, and one end of them is connected to the end of the outer insulating layer (32); The circumference of the metal shielding layer (15) is connected to the grounding wire (5), the mounting assembly (2) is mounted on the outer sheath (16), and the terminal (4) is arranged at the end of the exposed section of the conductor (11).

6. A busbar type wall bushing device according to claim 5, characterized in that: The outer insulating layer (32) is made of silicone rubber.

7. A busbar type wall bushing device according to claim 6, characterized in that: The conductor (11) is a copper tube or an aluminum tube.

8. A busbar type wall bushing device according to claim 1, characterized in that: A busbar is arranged on the circumference of the terminal (4).

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