CN202632850U - Crosslinked polyethylene insulating power cable - Google Patents

Abstract

The utility model relates to a cross-linked polyethylene insulated power cable, which comprises at least one metal conductor, each metal conductor is covered with a cross-linked polyethylene insulating layer, and the cross-linked polyethylene insulating layer is covered with an outer sheath layer. A tape layer is provided between the joint polyethylene insulating layer and the outer sheath layer. The cable has high insulation reliability, large carrying capacity and good flame retardant effect, and is used in indoor, tunnel and cable trench and other places.

Description

XLPE insulated power cable

technical field

The utility model relates to the technical field of power cables, in particular to a cross-linked polyethylene insulated power cable. the

Background technique

The current-carrying capacity of the cable is usually related to the cross-sectional area of the conductor core. When the current increases, the temperature of the conductor will increase. When the temperature of the insulating layer covered by the conductor exceeds the upper limit, the performance of the insulating layer will change, thereby The insulation reliability of the insulating layer is greatly reduced, which affects the service life of the cable. the

At the same time, the existing ordinary cables have problems of poor structural stability and flammability. Therefore, the safety level of electrical circuits and the flame retardancy of cables have attracted more and more attention. the

Utility model content

The technical problem to be solved by the utility model is: in order to solve the problems raised in the above-mentioned background technology, the utility model provides a cross-linked polyethylene insulated power cable, which has high insulation reliability, large carrying capacity and good flame-retardant effect. the

The technical solution adopted by the utility model to solve the technical problem is: a cross-linked polyethylene insulated power cable, including at least one metal conductor, each metal conductor is covered with a cross-linked polyethylene insulating layer, and the cross-linked polyethylene insulating layer The outer covering is covered with an outer sheath layer, and a tape layer is arranged between the cross-linked polyethylene insulating layer and the outer sheath layer. the

Further: the cross-section of each metal conductor is circular or fan-shaped. the

Further: each metal conductor is a copper core or an aluminum core. the

Further: there are 2 or 3 or 4 or 5 metal conductors. the

Further: Filling layers are provided between the tape layer and the cross-linked polyethylene insulating layers covered by each metal conductor and between the cross-linked polyethylene insulating layers covered by each metal conductor. the

Beneficial effects of the utility model: each metal conductor in the cable of the utility model is coated with a cross-linked polyethylene insulating layer, and the cross-linked polyethylene insulating layer has high insulation reliability, good mechanical and physical properties, and resistance to environmental stress cracking Performance and wear resistance, can withstand concentrated mechanical stress; under the rated voltage of 0.6/1kV power supply conditions, the maximum rated temperature of the cross-linked polyethylene insulation layer can reach 90 °C during long-term work, and the current carrying capacity is relatively large. The cross-linked polyethylene insulating layer is covered with an outer sheath layer. The outer sheath layer has a good flame retardant effect, thereby prolonging the service life of the cable. It is used in indoors, tunnels, cable trenches and other places. the

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described. the

Fig. 1 is the cross-sectional structure schematic diagram of the utility model embodiment one;

Fig. 2 is the cross-sectional structure schematic diagram of the utility model embodiment two;

Fig. 3 is the cross-sectional structure schematic diagram of the utility model embodiment three;

Fig. 4 is the cross-sectional structure schematic diagram of the utility model embodiment four;

Fig. 5 is the schematic cross-sectional structure diagram of the fifth embodiment of the utility model;

Fig. 6 is a schematic cross-sectional structure diagram of the sixth embodiment of the utility model;

Fig. 7 is a schematic cross-sectional structure diagram of a seventh embodiment of the utility model;

Fig. 8 is a schematic cross-sectional structure diagram of an eighth embodiment of the utility model;

Fig. 9 is a schematic cross-sectional structure diagram of a ninth embodiment of the utility model;

Fig. 10 is a schematic cross-sectional structure diagram of a tenth embodiment of the utility model;

Fig. 11 is a schematic cross-sectional structure diagram of an eleventh embodiment of the utility model;

Fig. 12 is a schematic cross-sectional structure diagram of Embodiment 12 of the present utility model. the

In the figure, 1. Metal conductor, 2. Cross-linked polyethylene insulating layer, 3. Tape layer, 4. Outer sheath layer, 5. Filling layer. the

Detailed ways

Now in conjunction with accompanying drawing, the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model. the

As shown in Figures 1 to 12, the cross-linked polyethylene insulated power cable of the present invention includes at least one metal conductor 1, each metal conductor 1 is covered with a cross-linked polyethylene insulating layer 2, and the cross-linked polyethylene insulating layer 2 The insulation reliability is high, with good mechanical and physical properties, environmental stress cracking resistance and wear resistance, and can withstand concentrated mechanical stress; under the rated voltage of 0.6/1kV power supply conditions, the cross-linked polyethylene insulation layer 2 can work for a long time The highest rated temperature can reach 90°C, and the carrying capacity is relatively large. The cross-linked polyethylene insulating layer 2 is covered with an outer sheath layer 4. The outer sheath layer 4 has a good flame-retardant effect and prolongs the service life of the cable. The cross-linked polyethylene insulating layer 2 and the outer sheath layer 4 There is a tape layer 3 between them. the

The cross-section of each metal conductor 1 mentioned above is circular or fan-shaped; each metal conductor 1 is a copper core or an aluminum core; the metal conductor 1 is 2 or 3 or 4 or 3+1 or 5 or 4+1 Or 3+2 pieces; Filling is provided between the tape layer 3 and the cross-linked polyethylene insulating layer 2 covered by each metal conductor 1 and between the cross-linked polyethylene insulating layer 2 covered by each metal conductor 1 Layer 5. the

As shown in Figure 1, the utility model embodiment one is not provided with a filling layer 5 and the metal conductor 1 is a circular structure; the utility model embodiment two as shown in Figure 2 is provided with a filling layer 5 and metal conductor 1 is the structure that 2 cross sections are circular; The utility model embodiment three as shown in Figure 3 is provided with filling layer 5 and metal conductor 1 is the structure that 2 cross sections are fan-shaped; As shown in Figure 4 The shown utility model embodiment four is provided with a filling layer 5 and the metal conductor 1 is a circular structure with three cross sections; as shown in Figure 5, the utility model embodiment five is provided with a filling layer 5 and a metal conductor 1 Conductor 1 is a structure with three fan-shaped cross-sections;

As shown in Figure 6, the sixth embodiment of the utility model is provided with a filling layer 5 and the metal conductor 1 is a circular structure with four cross-sections; as shown in Figure 7, the seventh embodiment of the utility model is provided with a filling layer 5 And the metal conductor 1 is a fan-shaped structure with 4 cross-sections; as shown in Figure 8, the eighth embodiment of the utility model is provided with a filling layer 5 and the metal conductor 1 is a structure with 3+1 circular cross-sections; Embodiment 9 of the utility model shown in 9 is provided with a filling layer 5 and 3+1 metal conductors 1, wherein 3 cross-sections are fan-shaped and 1 cross-section is a circular structure; the present invention as shown in Figure 10 The tenth embodiment of the utility model is provided with a filling layer 5 and the metal conductor 1 has five circular cross-sections; the eleventh embodiment of the utility model as shown in Figure 11 is provided with a filling layer 5 and the metal conductor 1 is 4 +1 structure with a circular cross-section; as shown in Figure 12, the utility model embodiment 12 is provided with a filling layer 5 and the metal conductor 1 has 3+2 structures with a circular cross-section. the

Inspired by the above ideal embodiment according to the utility model, through the above description content, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims. the

Claims (5)

1. A cross-linked polyethylene insulated power cable is characterized in that: it comprises at least one metal conductor (1), each metal conductor (1) is covered with a cross-linked polyethylene insulating layer (2), and the cross-linked polyethylene insulation The layer (2) is covered with an outer sheath layer (4), and a tape layer (3) is arranged between the cross-linked polyethylene insulating layer (2) and the outer sheath layer (4). 2. The cross-linked polyethylene insulated power cable according to claim 1, characterized in that the cross-section of each metal conductor (1) is circular or fan-shaped. 3. The XLPE insulated power cable according to claim 1, characterized in that each of the metal conductors (1) is a copper core or an aluminum core. 4. The XLPE insulated power cable according to claim 1, characterized in that: the number of said metal conductors (1) is 2 or 3 or 4 or 5. 5. The cross-linked polyethylene insulated power cable according to claim 4, characterized in that: the said tape layer (3) and the cross-linked polyethylene insulating layer (2) covered by each metal conductor (1) Filling layers (5) are provided between each metal conductor (1) and between the cross-linked polyethylene insulating layers (2) covered by each metal conductor (1). the

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