CN201413727Y - 0.6/1kv and below crosslinked polyethylene insulated power cable - Google Patents

Abstract

The utility model discloses a power cable. The cable is designed for providing a crosslinked polyethylene insulated power cable with reasonable structure and good flame retardant effect, wherein the crosslinked polyethylene insulated power cable is 0.6/1kv or below. The cable comprises a conductor, and an insulating layer, a wrapping tape layer, a steel tape armor layer and an outer sheath are sequentially arranged from the conductor to the outside. The cable laying method is suitable for places with high cable laying density, such as power stations, subways, tunnels, high-rise buildings, large industrial and mining enterprises, oil fields, coal mines and the like.

Description

0.6/1kv and below XLPE insulated power cables

technical field

The utility model relates to a power cable, in particular to a cross-linked polyethylene insulated power cable of 0.6/1kv or below.

Background technique

Power cables are used for the transmission of strong electric energy in the transmission, distribution, transmission, transformation, and power supply lines. The current passing through them is large (tens of amps to thousands of amps), and the voltage is high (220V to 500kV and above).

0.6/1kv and below XLPE insulated power cables are mainly laid indoors, in tunnels and pipelines, and can also be laid underground. The existing ordinary 0.6/1kv and below XLPE insulated power cables have the problems of poor structural stability and flammability, which adds a certain degree of difficulty to the design of XLPE insulated power cables. Therefore, the safety of electrical circuits The level and flame retardancy of cables have attracted more and more attention. The flame retardancy of cables has become a comprehensive development direction of the cable industry.

Utility model content

In order to overcome the above defects, the purpose of this utility model is to provide a cross-linked polyethylene insulated power cable with a reasonable structure and good flame-retardant effect of 0.6/1kv and below.

In order to achieve the above purpose, the utility model 0.6/1kv and below cross-linked polyethylene insulated power cable includes a conductor, from the conductor to the outside, followed by an insulating layer, a tape layer, a steel tape armor layer and an outer sheath.

The utility model 0.6/1kv and below cross-linked polyethylene insulated power cable adopts the above-mentioned structure, which has a stable structure and excellent electrical conductivity.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of the utility model.

Fig. 2 is a schematic diagram of a structure in which the utility model is provided with a filling body and the conductor has two circular cross-sections.

Fig. 3 is a structural schematic diagram of the utility model provided with fillers and five conductors, two of which are circular in cross-section and three in fan-shaped cross-section.

Fig. 4 is a schematic diagram of the structure of the utility model provided with fillers and three conductors with circular cross-sections.

Fig. 5 is a schematic diagram of the utility model provided with a filling body and a conductor with three fan-shaped cross-sections.

Fig. 6 is a schematic diagram of the structure of the utility model provided with fillers and conductors with four circular cross-sections.

Fig. 7 is a schematic diagram of the structure of the utility model provided with fillers and conductors with four fan-shaped cross-sections.

Fig. 8 is a schematic diagram of the structure of the utility model provided with fillers and five conductors with circular cross-sections.

Fig. 9 is a structural schematic diagram of the utility model provided with fillers and five conductors, one of which is circular in cross-section and four of which are fan-shaped in cross-section.

Detailed ways

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.

As shown in Figure 1, it can be seen that the utility model 0.6/1kv and below cross-linked polyethylene insulated power cables include a conductor 1, from the conductor 1 to the outside, followed by an insulating layer 2, a tape layer 3, a steel tape armor layer 4 and Outer sheath5. The above cable has a stable structure and excellent electrical conductivity. The main feature is that the cable is not easy to catch fire or the flame delay is limited to a certain range when it catches fire, which prolongs the service life.

As an improvement of the present invention, FIG. 2 shows a structure in which a filling body 6 is provided and the conductor 1 has two circular cross-sections.

Further, Fig. 3 shows a structure in which fillers 6 are provided and conductors 1 are five, two of which are circular in cross-section and three are fan-shaped in cross-section; Fig. 4 shows a structure in which fillers 6 are provided and conductors 1 It is a structure with three circular cross-sections; Figure 5 shows a structure with a filler 6 and a conductor 1 with three fan-shaped cross-sections; Figure 6 shows a structure with a filler 6 and a conductor 1 with four cross-sections It is a circular structure; Figure 7 shows a structure in which fillers 6 are provided and conductor 1 has four sector-shaped cross-sections; Figure 8 shows a structure in which fillers 6 are provided and conductors 1 are five circular in cross-section Structure; FIG. 9 shows a structure in which a filling body 6 is provided and there are five conductors 1, one of which is circular in cross-section and four fan-shaped in cross-section.

In summary, the cross section of the conductor 1 can be circular or fan-shaped; the conductor 1 contained in the cable can also be two, three, four or five, and each conductor 1 is covered with an insulating layer 2 ; And the filling body 6 is provided between the tape layer 3 and the insulating layer 2 covered by each conductor 1 , and the filling body 6 is provided between the insulating layer 2 covered by each conductor 1 . In this way, the safety level of electrical circuits has been improved, and certain economic and social benefits have been achieved. It is a cross-linked polyethylene insulated power cable of 0.6/1kv and below that fully complies with national standards, and meets the AC rated voltage of 0.6/1kv and The following power transmission and distribution lines are suitable for power stations, subways, tunnels, high-rise buildings, large industrial and mining enterprises, oil fields, coal mines and other places with high cable laying density.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (4)

1. A cross-linked polyethylene insulated power cable of 0.6/1kv or below, including a conductor, characterized in that: from the conductor to the outside, there are an insulating layer, a tape layer, a steel tape armor layer and an outer sheath in sequence. 2. The cross-linked polyethylene insulated power cable of 0.6/1kv and below according to claim 1, characterized in that the cross-section of the conductor is circular or fan-shaped. 3. The 0.6/1kv and below XLPE insulated power cable according to claim 2, characterized in that: there are two, three, four or five conductors, and each conductor is covered with an insulating layer . 4. The 0.6/1kv and below cross-linked polyethylene insulated power cable according to claim 3, characterized in that: a filling body is provided between the tape layer and the insulating layer covered by each conductor, and each conductor wraps A filler is provided between the covering insulating layers.

Images