XL-PE insulating high-temperature-resistant high-end equipment cable

Abstract

The utility model discloses an XL-PE insulating high-temperature resistant high-end equipment cable, which comprises a plurality of conductive wire cores, insulating inner sheaths, an XL-PE high-temperature resistant layer, a ground wire, an aluminum foil shielding layer and an insulating outer sheath layer, the outer side of each conductive wire core is sleeved with the insulating inner sheath, the outer side of the insulating inner sheath is sleeved with the XL-PE high-temperature resistant layer, the outer side of the XL-PE high-temperature resistant layer is sleeved with the ground wire, and the outer side of the XL-PE high-temperature resistant layer is sleeved with the ground wire. A ground wire is arranged between the conductive wire cores, the outer side of the XL-PE high-temperature-resistant layer is sleeved with an aluminum foil shielding layer, and the outer side of the aluminum foil shielding layer is sleeved with an insulating outer sheath layer. According to the utility model, the thermal deformation resistance, the mechanical property at high temperature, the environmental stress cracking resistance and the thermal aging resistance can be improved, the chemical stability and the solvent resistance are enhanced, the cold flow property is reduced, the mechanical property and the radiation resistance are excellent, and the application field is wide.

Description

[Technical field]

[0001] The utility model relates to the technical field of cables, in particular to the technical field of XL-PE insulated high-temperature resistant high-end equipment cables. [Background technology]

[0002] Cables are usually made of several or several groups of wires, each group of at least two wires twisted together to form a rope-like cable. Each group of wires is insulated from each other and often twisted around a center. The entire outer surface is covered with a highly insulating covering. Cables come in a variety of varieties and specifications and have a wide range of applications. Polyethylene (PE) is currently a commonly used material for cable insulation, but it has the disadvantage of limited high temperature resistance. [Utility Model Content]

[0003] The purpose of the utility model is to solve the problems in the prior art and propose the use of XL-PE insulated high-temperature resistant high-end equipment cables, which can improve the heat deformation resistance, improve the mechanical properties under high temperature, improve the resistance to environmental stress cracking and heat aging, enhance the chemical stability and solvent resistance, reduce the cold flow, have excellent mechanical and radiation resistance, and have a wide range of applications.

[0004] To achieve the above-mentioned purpose, the utility model proposes the use of XL-PE insulated high-temperature resistant high-end equipment cables, including a conductive core, an insulating inner sheath, an XL-PE high-temperature resistant layer, a ground wire, an aluminum foil shielding layer and an insulating outer sheath layer. There are multiple conductive cores, and the outer side of each conductive core is provided with an insulating inner sheath, the outer side of the insulating inner sheath is provided with an XL-PE high-temperature layer, a ground wire is provided between the conductive cores, the outer side of the XL-PE high-temperature resistant layer is provided with an aluminum foil shielding layer, and the outer side of the aluminum foil shielding layer is provided with an insulating outer sheath layer.

[0005] Preferably, the insulating inner sheath is a silicone rubber sheath layer.

[0006] Preferably, the XL-PE high temperature resistant layer is a radiation cross-linked XL-PE high temperature resistant layer.

[0007] Preferably, the outer side of the XL-PE high temperature resistant layer is evenly provided with a high temperature resistant coating.

[0008] Preferably, an outer side of the ground wire is provided with an insulating layer.

[0009] Preferably, the conductive core and the ground wire are fixedly adhered and arranged on the inner side of the aluminum foil shielding layer, and a buffer gap is arranged between adjacent conductive cores and ground wires.

[0010] Preferably, the insulating outer sheath layer is a wear-resistant sheath layer.

[0011] Beneficial effects of the utility model: the utility model combines a conductive core, an insulating inner sheath, an XL-PE high temperature resistant layer, a ground wire, an aluminum foil shielding layer and an insulating outer sheath layer, and after experimental optimization, transforms the PE material from a linear molecular structure into a three-dimensional XL-PE material through radiation cross-linking processing, and transforms the thermoplastic plastic into an insoluble thermosetting plastic. Compared with ordinary thermoplastic polyethylene, the XLPE insulated cable has the following advantages: improved heat deformation resistance, improved mechanical properties at high temperatures, improved resistance to environmental stress cracking and heat aging, enhanced chemical stability and solvent resistance, reduced cold flow, maintained the original electrical properties, and the long-term working temperature can reach 125°C and 150°C. After the polyethylene is cross-linked, its short-circuit temperature can be increased to 250°C. For cables of the same thickness, the current carrying capacity of the cross-linked polyethylene is significantly increased. The XLPE insulated cable also has excellent mechanical and radiation resistance and has a wide range of applications. Such as: internal connecting wires of electrical appliances, motor leads, automotive low-voltage signal control wires, locomotive wires, subway cables, submersible oil pump cables and other application areas.

[0012] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0013] Figure 1 It is a structural schematic diagram of the utility model using XL-PE insulated high-temperature resistant high-end equipment cables.

[0014] In the figure: 1-conductive core, 2-insulating inner sheath, 3-XL-PE high temperature resistant layer, 4-ground wire, 5-aluminum foil shielding layer, 6-insulating outer sheath layer. [Specific implementation method]

[0015] See also Figure 1 The utility model adopts XL-PE insulated high-temperature resistant high-end equipment cable, including a conductive core 1, an insulating inner sheath 2, an XL-PE high-temperature resistant layer 3, a ground wire 4, an aluminum foil shielding layer 5 and an insulating outer sheath layer 6. There are multiple conductive cores 1, and the outer side of each conductive core 1 is provided with an insulating inner sheath 2, and the outer side of the insulating inner sheath 2 is provided with an XL-PE high-temperature layer. A ground wire 4 is arranged between the conductive cores 1, and the outer side of the XL-PE high-temperature resistant layer 3 is provided with an aluminum foil shielding layer 5. An insulating outer sheath layer 6 is sleeved on the outside of the aluminum foil shielding layer 5, the insulating inner sheath 2 is a silicone rubber sheath layer, the XL-PE high temperature resistant layer 3 is a radiation cross-linked XL-PE high temperature resistant layer, and the outer side of the XL-PE high temperature resistant layer 3 is evenly provided with a high temperature resistant coating, and an insulating layer is sleeved on the outside of the ground wire 4. The conductive core 1 and the ground wire 4 are fixedly adhered to the inside of the aluminum foil shielding layer 5, and a buffer gap is provided between adjacent conductive cores 1 and ground wires 4. The insulating outer sheath layer 6 is a wear-resistant sheath layer.

[0016] The utility model combines a conductive wire core 1, an insulating inner sheath 2, an XL-PE high temperature resistant layer 3, a ground wire 4, an aluminum foil shielding layer 5 and an insulating outer sheath layer 6, and after experimental optimization, transforms the PE material from a linear molecular structure into a three-dimensional XL-PE material through radiation cross-linking processing, and transforms the thermoplastic plastic into an insoluble thermosetting plastic. Compared with ordinary thermoplastic polyethylene, the XLPE insulated cable has the advantages of improved heat deformation resistance, improved mechanical properties at high temperatures, improved environmental stress cracking resistance and heat aging resistance, enhanced chemical stability and solvent resistance, reduced cold flow, and maintained the original electrical properties. The long-term working temperature can reach 125°C and 150°C. After the polyethylene is cross-linked, its short-circuit temperature can be increased to 250°C. For cables of the same thickness, the current carrying capacity of the cross-linked polyethylene is significantly increased. The XLPE insulated cable also has excellent mechanical and radiation resistance, and has a wide range of applications. Such as: internal connecting wires of electrical appliances, motor leads, automotive low-voltage signal control wires, locomotive wires, subway cables, submersible pump cables, and other application fields.

[0017] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. Use XL-PE insulated high temperature resistant high-end equipment cables, which are characterized by: The invention comprises a conductive wire core (1), an insulating inner sheath (2), an XL-PE high temperature resistant layer (3), a ground wire (4), an aluminum foil shielding layer (5) and an insulating outer sheath layer (6); the conductive wire cores (1) are in plurality, the outer side of each conductive wire core (1) is sheathed with an insulating inner sheath (2), the outer side of the insulating inner sheath (2) is sheathed with an XL-PE high temperature layer, a ground wire (4) is arranged between the conductive wire cores (1), the outer side of the XL-PE high temperature resistant layer (3) is sheathed with an aluminum foil shielding layer (5), and the outer side of the aluminum foil shielding layer (5) is sheathed with an insulating outer sheath layer (6).

2. The high-temperature resistant high-end equipment cable using XL-PE insulation as claimed in claim 1, characterized in that: The insulating inner sheath (2) is a silicone rubber sheath layer.

3. The high temperature resistant high-end equipment cable using XL-PE insulation as claimed in claim 1, characterized in that: The XL-PE high temperature resistant layer (3) is a radiation cross-linked XL-PE high temperature resistant layer.

4. The high-temperature resistant high-end equipment cable using XL-PE insulation as claimed in claim 1, characterized in that: The outer side surface of the XL-PE high temperature resistant layer (3) is evenly provided with a high temperature resistant coating.

5. The high temperature resistant high-end equipment cable using XL-PE insulation as claimed in claim 1, characterized in that: The outer side of the ground wire (4) is covered with an insulating layer.

6. The high temperature resistant high-end equipment cable using XL-PE insulation as claimed in claim 1, characterized in that: The conductive wire core (1) and the ground wire (4) are fixedly adhered and arranged on the inner side of the aluminum foil shielding layer (5), and a buffer gap is arranged between adjacent conductive wire cores (1) and ground wires (4).

7. The high temperature resistant high-end equipment cable using XL-PE insulation as claimed in claim 1, characterized in that: The insulating outer sheath layer (6) is a wear-resistant sheath layer.

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