CN216084364U

CN216084364U - Metal box type composite shielding tube type insulating bus

Info

Publication number: CN216084364U
Application number: CN202120961445.1U
Authority: CN
Inventors: 王栋; 杨青
Original assignee: Fuxin Enclosed Bus Bar Co ltd
Current assignee: Fuxin Enclosed Bus Bar Co ltd
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2022-03-18
Anticipated expiration: 2031-05-07

Abstract

The utility model discloses a metal box type composite shielding tube type insulated bus, which solves the problems of unstable insulation property and complex processing process of the insulated bus and has the technical scheme key points that: the utility model provides a box compound shield cast insulation bus of metal, includes a plurality of bus conductors, still includes the metal-back, bus conductor distributes inside the metal-back, the bus conductor be provided with compound shielding layer outward, the involution shielding layer is provided with semiconductor heat shrinkable sleeve and insulating heat shrinkable sleeve, the inseparable cladding of semiconductor heat shrinkable sleeve is outside the bus conductor, the inseparable cladding of insulating heat shrinkable sleeve has reached the purpose of stable insulation and convenient to process outside the semiconductor heat shrinkable sleeve.

Description

Metal box type composite shielding tube type insulating bus

Technical Field

The utility model belongs to the technical field of power transmission and distribution, and particularly relates to a metal box type composite shielding pipe type insulating bus.

Background

An insulating tubular bus is a bus product which takes a copper tube or an aluminum alloy tube as a conductor and is externally coated with insulation. It is called as "tubular bus" abroad. The insulated tubular bus has the characteristics of high current, high mechanical strength, good insulation, wide application range and the like, and is accepted and accepted by more and more customers.

The tubular busbar body is provided with the grounding shielding layer, is reliably connected with the ground, and has good insulating effect and high safety factor. The tubular bus with the full-insulation structure is technically divided into two types, namely an insulation heat-shrinkable sheath type bus and an insulation material winding type bus.

Insulating pyrocondensation sheath formula mainly adopts insulating layer and semi-conductive layer cooperation to use, one deck semi-conductive layer, the pyrocondensation in turn of one deck insulating layer on the conductor, this kind of tubular busbar is because the number of piles is more, and the pyrocondensation effect is unsatisfactory, easily at the pyrocondensation in-process, produces the harmful factor that influences electrical properties such as bubble.

The insulating material is wound, a band-shaped insulating material is used as a filler, each section of tubular bus is wound layer by layer in a reciprocating manner until the insulating thickness position is reached, and then an outer sheath is arranged on the outer surface in a thermal shrinkage manner. The disadvantages are complex process, long time consumption and difficult field construction.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a metal box type composite shielding tube type insulated bus which is stable in insulation and convenient to process.

The purpose of the utility model is realized as follows: the utility model provides a box compound shielded tubular insulated bus of metal, includes a plurality of bus conductors, still includes the metal-back, bus conductor distributes inside the metal-back, bus conductor be provided with compound shielding layer outward, the involution shielding layer is provided with semiconductor heat shrink sleeve and insulating heat shrink sleeve, semiconductor heat shrink sleeve cladding is outside bus conductor, insulating heat shrink sleeve cladding is outside semiconductor heat shrink sleeve.

The utility model is further optimized as follows: the bus conductor is fixed inside the metal shell through a clamp.

The utility model is further optimized as follows: the shell is made of aluminum alloy plates.

The utility model is further optimized as follows: the metal casing be provided with the shutter, the shutter distributes in metal casing both sides.

The utility model is further optimized as follows: and connecting flanges are arranged at two ends of the metal shell.

The utility model is further optimized as follows: the number of the bus conductors is 1-20.

Compared with the prior art, the utility model has the outstanding and beneficial technical effects that: the shielding layer is a double-layer co-extrusion heat shrinkable sleeve, namely a semiconductor heat shrinkable sleeve and an insulation heat shrinkable sleeve are preprocessed into the double-layer co-extrusion heat shrinkable sleeve through special process treatment, the inner wall of the double-layer co-extrusion heat shrinkable sleeve is a semiconductor heat shrinkable sleeve, and the outer wall of the double-layer co-extrusion heat shrinkable sleeve is an insulation heat shrinkable sleeve, so that the semiconductor heat shrinkable sleeve and the insulation heat shrinkable sleeve can be in contact more fully. And then, the double-layer co-extrusion heat-shrinkable sleeve is heat-shrunk outside the bus conductor, which is equivalent to a one-step sleeve two-layer heat-shrinkable sleeve, so that the number of heat-shrinkable layers is reduced, the manufacturing procedures are reduced, and the probability of generating bubbles and other factors influencing the electrical performance after heat-shrinking between layers is reduced.

Meanwhile, the metal shell is additionally arranged outside the bus conductor and is made of aluminum alloy plates, so that the corrosion resistance is good, the additional eddy current loss caused by a steel shell can be avoided, and the heating of surrounding steel structures caused by electromagnetic field leakage can be avoided. The metal shell is electrically communicated and grounded at multiple points, so that the risk of personal electric shock can be effectively avoided, a net fence is not required to be arranged, and the requirement on civil engineering is simplified. The metal shell improves the integral mechanical strength of the product, and improves the tolerance capability to severe environments such as sunshine, wind, rain, snow and frost, thereby greatly prolonging the service life of the product.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of the present invention;

fig. 3 is a schematic view of the bus bar conductor structure of the present invention.

In the figure: 1. a bus conductor; 2. a metal shell; 3. a composite shielding layer; 4. a semiconductor heat shrinkable sleeve; 5. insulating thermal shrinkage sleeves; 6. a fixture; 7. a blind window; 8. and connecting the flanges.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following description, with reference to the drawings in the embodiments of the present invention, clearly and completely describes the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the embodiment provides a metal box type composite shielding tube type insulated bus, which comprises 3 bus conductors 1 and a metal shell 2, wherein the bus conductors 1 are copper tubes or aluminum alloy tubes, and the shell is made of aluminum alloy plates. Bus conductor 1 distributes inside

metal casing

2, and 3 bus conductor 1 interval certain distance sets up side by side, can decide to the electric current size, the size of 1 copper pipe of single bus conductor or aluminum pipe, and the electric current volume is big more, and the conductor total cross-section is big more, and bus conductor 1 is fixed in inside metal casing 2 through fixture 6, fixture 6 and metal casing 2 fixed connection, and 1 joint of bus conductor is inside fixture 6.

In the embodiment, a composite shielding layer 3 is arranged outside the bus conductor 1, the composite shielding layer 3 is provided with a semiconductor heat-shrinkable sleeve 4 and an insulating heat-shrinkable sleeve 5, and the semiconductor heat-shrinkable sleeve 4 is made of a polyolefin material with conductive performance through radiation crosslinking; the insulating heat shrinkable sleeve 5 is made of polyethylene material, the semiconductor heat shrinkable sleeve 4 is coated outside the bus conductor 1, and the insulating heat shrinkable sleeve 5 is coated outside the semiconductor heat shrinkable sleeve 4; when carrying out the cladding of 1 compound shielding layer of bus conductor 3, earlier with semiconductor heat shrinkable sleeve 4 and insulating heat shrinkable sleeve 5, the preprocessing becomes a double-deck crowded heat shrinkable sleeve altogether, later with bus conductor 1 through cleaning process, outside 1 with the heat shrinkable double-deck crowded heat shrinkable sleeve of crowded heat shrinkable sleeve is located bus conductor with the pyrocondensation mode cover again, can be according to voltage class, decide 3 thickness on compound shielding layer, then carry out waterproof insulation to 1 end winding waterproof insulating adhesive tape of bus conductor, thereby guarantee the waterproof insulating nature of whole section generating line.

The embodiment is further optimized in that the metal shell is provided with the shutters, and the shutters are distributed on two sides of the metal shell, so that heat dissipation is facilitated. The metal casing both ends be provided with flange, flange and metal casing pass through welded mode and are connected, flange can use when a plurality of metal casing multistage are connected, increase the stability that the multistage is connected.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Claims

1. The utility model provides a box compound shield cast insulation bus of metal, includes a plurality of bus conductor (1), its characterized in that still includes metal casing (2), bus conductor (1) distribute inside metal casing (2), bus conductor (1) be provided with compound shielding layer (3) outward, compound shielding layer (3) are provided with semiconductor heat shrinkable sleeve (4) and insulating heat shrinkable sleeve (5), semiconductor heat shrinkable sleeve (4) cladding is outside the parent wire, insulating heat shrinkable sleeve (5) cladding is outside semiconductor heat shrinkable sleeve (4).

2. The metal box type composite shield pipe type insulated bus bar according to claim 1, wherein the bus bar conductor (1) is fixed inside the metal shell (2) by a clamp (6).

3. The metal box type composite shielded tubular insulated bus bar according to claim 1, wherein the outer shell is made of aluminum alloy plate.

4. The metal box type composite shield pipe type insulated bus bar according to claim 1, wherein the metal shell (2) is provided with louvers (7), and the louvers (7) are distributed on two sides of the metal shell (2).

5. The metal box type composite shielded tubular insulated bus bar according to claim 1, wherein the metal shell (2) is provided with connecting flanges (8) at both ends.

6. The metal box type composite shielded tubular insulated bus according to claim 1, wherein the number of bus conductors (1) is 1-20.