CN213483431U

CN213483431U - Metal trunk line of single-phase stranded conductor structure

Info

Publication number: CN213483431U
Application number: CN202022691825.6U
Authority: CN
Inventors: 杨柳; 杨俊杰
Original assignee: Jiangsu Jiuwei Intelligent Technology Co ltd
Current assignee: Dalian Jiuwei Electric Power Technology Co.,Ltd.
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-06-18
Anticipated expiration: 2030-11-19

Abstract

The utility model discloses a single-phase stranded conductor structure's metal main line, including single-phase conductor subassembly, insulating subassembly and shell subassembly, single-phase conductor subassembly is provided with the multiunit, single-phase conductor subassembly is including the stranded conductor, insulating subassembly sets up between single-phase conductor subassembly, the shell subassembly sets up outside insulating subassembly, break the distribution main line field and generally ignore the technological prejudice that skin effect calculates the continuation decades that the conductor is current-carrying, present the scientific factor that industrial personnel ignored in this field electrical fault of several decades or the accident, obtain the power that realizes the new product through experimental data development, the metal main line product of novel single-phase stranded conductor structure is promoted in the application, reach accurate approval conductor current-carrying standard, safety, it is reasonable, the purpose of high-current main line product is used to the high efficiency.

Description

Metal trunk line of single-phase stranded conductor structure

Technical Field

The utility model relates to a power transmission and distribution metallic trunk conductor structure field specifically is a metallic trunk of single-phase stranded conductor structure.

Background

The conductor section and the conductor current density are important parameters of a main line conductor component, and the conductor section is judged by mainly adopting the sectional area of the conductor and combining heat dissipation conditions when the conductor bears the current by technical personnel in the field of transmission and distribution electric conductors. For example, the industry commonly used "pithy of wire section": "10 lower 5, 100 upper 2. 25, 35, four bounds. 70, 95, two and a half times. And (5) tube penetration temperature, eight and nine folds. Half of the bare wire. And (5) performing copper wire upgrading calculation. "; conductor current density refers to the current density combined with the current magnitude mainly used by professionals for a main line conductor because the carrying current is large. For example, a T2 copper conductor, the current density of 2.5A per square millimeter is safe under the current of 2000A; between 2000A and 4000A, less than 2A per square millimeter is safe.

According to the professional knowledge, a mandatory acceptance technical standard is established in the field of power transmission and distribution engineering in part of domestic places, for example, the national standard T2 copper bar conductor with the section not less than 1000 square millimeters is adopted in the specified 2000A current in the conductor connection field of a power distribution cabinet in the 'Jiangsu province residence distribution acceptance standard'. Since 2020, the execution of the 'living and living check and acceptance standard' in Jiangsu province is more and more strict, and the standard is gradually popularized in China. However, under the high input standard, the connection of the conductors of the power distribution cabinet still has a plurality of faults. The skin effect of the current has a large influence on the current carrying capacity of the conductor. The first approach described above calculates the skin effect. However, the skin effect is relatively complex to calculate, and for the convenience of simple calculation and execution, the skin effect is not calculated in the second and third methods, and the error is amplified by dozens of times in the current carrying calculation of the high-current main line, but is still doubtful to the industry executors.

Through the analysis of nearly one hundred faults or accidents in decades by the electric professionals of the applicant of the patent and dozens of test tests, and finally through the test confirmation of professional detection departments of the national quality detection center, 4 strands of 2mm × 5mm national standard T2 copper conductors are compacted together and are wrapped by metal to carry current 500A, the standard temperature rise is only 50K, and the performance is 40% better than that of 70K national standard. The current-carrying capacity of the high-current main conductor can be remarkably increased by adopting a single-phase multi-strand structure. Based on this, the utility model designs a metal trunk of single-phase stranded conductor structure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a metal main line of single-phase stranded conductor structure breaks the distribution main line field and generally ignores the technological prejudice that lasts decades that the skin effect calculates the conductor current-carrying, presents the scientific factor that industry personnel ignored in this field electrical fault of several decades or the accident, obtains the power that realizes the new product through experimental data development, and the application promotes novel single-phase stranded conductor structure's metal main line product, reaches the accurate conductor current-carrying standard of certificating, and the purpose of safe, reasonable, high-efficient heavy current main line product of using.

In order to achieve the above object, the utility model provides a following technical scheme:

a metal trunk of a single-phase multi-strand conductor structure includes a single-phase conductor assembly provided with a plurality of sets, an insulation assembly including multi-strand conductors, and a housing assembly provided outside the insulation assembly.

Preferably, the multi-strand conductor inside the single-phase conductor assembly is tightly attached and tightly pressed, and the cross section of the single-phase conductor assembly can be rectangular, circular, triangular and oval.

Preferably, the multi-strand conductors inside the single-phase conductor assembly are spread as much as possible to enlarge the contact heat dissipation area of each conductor.

Preferably, the insulation components between the single-phase conductor components are wrapped by using an insulation film or an insulation coating process.

Preferably, the housing assembly is wrapped and arranged outside the plurality of compressed single-phase conductor assemblies, and the housing assembly is made of good thermal conductor metal and wraps the plurality of compressed single-phase conductor assemblies for heat dissipation.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the traditional single-phase single-stranded conductor structure is split into a single-phase multi-strand conductor structure, and the multi-strand conductor is tightly attached to dissipate heat by adopting various conductor shapes;

2. on the premise of reasonable configuration of the tool, the surface area of each strand of conductor is increased as much as possible to meet higher current-carrying performance.

3. In order to compress the volume of the trunk line and reduce the occupied space, the conductors are tightly attached to dissipate heat, and the conductors between different phase lines are insulated by adopting a film wrapping or surface coating process.

4. Each phase conductor is tightly wrapped by a metal shell, so that the purpose of radiating heat through the metal shell when the conductor is heated is achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings described below are only examples of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a horizontal single-phase multi-strand conductor metal trunk line according to the present invention;

FIG. 2 is a schematic structural view of a round single-phase multi-strand conductor metal trunk line according to the present invention;

fig. 3 is a schematic structural diagram of the hybrid single-phase multi-strand conductor metal trunk line of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-single-phase conductor component, 2-insulating component and 3-shell component.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the examples of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

the utility model provides a metal main line of single-phase stranded conductor structure, includes single-phase conductor subassembly 1, insulating subassembly 2 and shell subassembly 3, and single-phase conductor subassembly 1 is provided with the multiunit, and single-phase conductor subassembly 1 includes stranded conductor, and the stranded conductor in single-phase conductor subassembly 1 closely laminates to compress tightly the setting, and the cross-section of single-phase conductor subassembly 1 can be rectangle, circular, triangle-shaped and oval, and figure 1 is the utility model discloses horizontal single-phase stranded conductor metal main line structure sketch map; FIG. 2 is a schematic structural view of a round single-phase multi-strand conductor metal trunk line according to the present invention; fig. 3 is a schematic structural diagram of the hybrid single-phase multi-strand conductor metal trunk line of the present invention. Inside stranded conductor of single-phase conductor subassembly 1 expandes as far as possible to enlarge the contact heat radiating area of every strand of conductor, insulating subassembly 2 sets up between single-phase conductor subassembly 1, insulating subassembly 2 between single-phase conductor subassembly 1 adopts insulating film or insulating coating technology parcel, shell subassembly 3 sets up in insulating subassembly 2 outsidely, shell subassembly 3 parcel sets up in a plurality of single-phase conductor subassemblies 1 outsidely that compress tightly, shell subassembly 3 adopts good conductor metal to do a plurality of single-phase conductor subassemblies 1 that compress tightly of shell parcel and dispel the heat.

One specific application of this embodiment is: the metal trunk line provided by the technical scheme comprises a plurality of single-phase conductor components 1, insulating components 2 and shell components 3, wherein the cross section of each single-phase conductor component 1 can be rectangular, circular, triangular or elliptical, a stranded conductor is arranged in each single-phase conductor component 1, the traditional single-phase single-stranded conductor structure is split into the single-phase stranded conductor structure, the multi-stranded conductor is tightly attached to radiate heat by adopting various conductor shapes, the conductors are unfolded as far as possible on the premise of reasonable configuration of a tool, the surface area of each stranded conductor is increased, the contact radiating area of each stranded conductor is enlarged, the higher current-carrying performance is met, in order to compress the volume of the trunk line, the occupied space is reduced, the conductors are tightly attached to radiate heat, the insulating components are arranged among different phase lines, the insulating components 2 are wrapped by insulating films or insulating coating processes, the shell components 3 are arranged outside, shell subassembly 3 parcel sets up in a plurality of single-phase conductor subassembly 1 outsides that compress tightly, and shell subassembly 3 adopts good conductor metal of heat to do shell parcel a plurality of single-phase conductor subassembly 1 that compress tightly and dispel the heat, and each phase conductor adopts metal casing inseparable parcel, and the shell adopts heat radiation structure, reaches the radiating purpose of conductor temperature rise through metal casing. The device breaks through the technical prejudice that the skin effect is generally ignored in the field of distribution trunk lines to calculate the current carrying of the conductor for decades, presents scientific factors ignored by industrial personnel in electrical faults or accidents in the field for decades, obtains power for realizing new products through experimental data development, applies and popularizes metal trunk line products with novel single-phase multi-strand conductor structures, and achieves the purposes of accurately verifying the current carrying standard of the conductor and safely, reasonably and efficiently using high-current trunk line products.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A metal trunk of single-phase multi-strand conductor structure comprising a single-phase conductor assembly (1), an insulation assembly (2) and an enclosure assembly (3), characterized in that: the single-phase conductor assembly (1) is provided with a plurality of groups, the single-phase conductor assembly (1) comprises a plurality of strands of conductors, the insulation assembly (2) is arranged between the single-phase conductor assemblies (1), and the shell assembly (3) is arranged outside the insulation assembly (2).

2. A single phase multi-strand conductor structured metal trunk as claimed in claim 1, wherein: the stranded conductors in the single-phase conductor assembly (1) are tightly attached and pressed, and the cross section of the single-phase conductor assembly (1) can be rectangular, circular, triangular and elliptical.

3. A single phase multi-strand conductor structured metal trunk as claimed in claim 1, wherein: the multi-strand conductors in the single-phase conductor assembly (1) are spread as much as possible so as to enlarge the contact heat dissipation area of each strand of conductor.

4. A single phase multi-strand conductor structured metal trunk as claimed in claim 1, wherein: the insulating assemblies (2) between the single-phase conductor assemblies (1) are wrapped by adopting an insulating film or an insulating coating process.

5. A single phase multi-strand conductor structured metal trunk as claimed in claim 1, wherein: the shell component (3) is wrapped and arranged outside the compressed single-phase conductor components (1), and the shell component (3) is made of good heat conductor metal and wraps the compressed single-phase conductor components (1) to dissipate heat.