CN214476573U

CN214476573U - High-strength crosslinked insulated cable

Info

Publication number: CN214476573U
Application number: CN202120380452.2U
Authority: CN
Inventors: 彭辉
Original assignee: Anhui Huadong Cable Technology Co ltd
Current assignee: Anhui Huadong Cable Technology Co ltd
Priority date: 2021-02-19
Filing date: 2021-02-19
Publication date: 2021-10-22
Anticipated expiration: 2031-02-19

Abstract

The utility model discloses a high strength crosslinked insulated cable, its technical scheme main points are: the cable comprises a plurality of cable cores, wherein the plurality of cable cores are mutually twisted, the cable core sequentially comprises a cable core conductor, a fire-resistant mica tape and an insulating layer from inside to outside, the fire-resistant mica tape is wound outside the cable core conductor, a winding band layer is arranged at the outer end of the cable core, a filler is filled in a gap between the cable core and the winding band layer, a plurality of flexible supporting pieces and a plurality of tensile ropes are arranged inside the filler, the flexible supporting pieces are made of polyurethane rubber, a shielding layer is arranged outside the winding band layer, an inner armor layer is arranged outside the shielding layer, an outer armor layer is arranged outside the inner armor layer, the inner armor layer and the outer armor layer are formed by overlapping and winding copper strips, a plurality of damping springs are arranged in the gap between the inner armor layer and the outer armor layer, and a sheath layer is extruded outside the outer armor layer; the utility model discloses intensity is high to have good anti extrudability and anti stretchability.

Description

High-strength crosslinked insulated cable

Technical Field

The utility model belongs to the technical field of the cable technique and specifically relates to a high strength crosslinked insulated cable.

Background

The cable is used for transmitting electric energy, information and wire products for realizing electromagnetic energy conversion, the generalized wire cable is also called as cable for short, the narrow cable is insulated cable, and it can be defined as: an aggregate consisting of; one or more insulated wire cores, and their respective possible coatings, total protective layers and outer jackets, the cable may also have additional conductors without insulation.

Most of existing insulated cables are poor in extrusion resistance, and when the extrusion force applied to the cable is too large, cable cores inside the cable are likely to be damaged, so that normal use of the cable is affected; and current insulated cable tensile strength is not good, and the workman drags the cable inlet wire at the in-process of erectting the cable, causes the damage of cable easily, influences the normal use of cable.

SUMMERY OF THE UTILITY MODEL

To the problem mentioned in the background art, the utility model aims at providing a high strength crosslinked insulated cable, intensity is high to have good anti extrudability and tensile properties.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a high-strength crosslinked insulated cable comprises a plurality of cable cores, wherein the cable cores are mutually twisted, the cable cores sequentially comprise a cable core conductor, a fire-resistant mica tape and an insulating layer from inside to outside, the fire-resistant mica tape is wound outside the cable core conductor, a wrapping tape layer is arranged at the outer end of each cable core, a filler is filled in a gap between each cable core and the wrapping tape layer, a plurality of flexible supporting pieces and a plurality of tensile ropes are arranged inside the filler, each flexible supporting piece is made of polyurethane rubber, each tensile rope is made of a chromium-zirconium-copper alloy wire, a shielding layer is arranged outside the wrapping tape layer, an inner armor layer is arranged outside the shielding layer, an outer armor layer is arranged outside the inner armor layer, the inner armor layer and the outer armor layer are formed by overlapping and wrapping copper strips, and a plurality of damping springs are arranged in the gap between the inner armor layer and the outer armor layer, and a sheath layer is extruded and coated on the outer side of the outer armor layer.

Furthermore, the cable core conductor is formed by twisting a plurality of strands of tinned copper wires and tinned nickel wires in a composite mode, and the diameters of the tinned copper wires and the tinned nickel wires are 0.8 mm.

By adopting the technical scheme, the cable core can be ensured to have good conductivity.

Furthermore, the insulating layer is made of cross-linked polyethylene materials in an extrusion wrapping mode.

Through adopting above-mentioned technical scheme, the insulating layer adopts the cross-linked polyethylene material to make and has good electric insulation effect between each cable core, and the cross-linked polyethylene is a flexibility, high mechanical strength, the good ultrapure insulating material of electrical property, has higher insulation resistance constant as insulating material, can bear higher voltage level, guarantees simultaneously that the cable has excellent insulating nature, and the cross-linked polyethylene in case what take place the cable burning produces is carbon dioxide and water, possesses the low smoke characteristic of no halogen.

Furthermore, the wrapping tape layer is made of a fire-resistant fiber material.

By adopting the technical scheme, a plurality of cable cores are conveniently bound together.

Further, the filler is inorganic mineral paper ropes.

By adopting the technical scheme, the inorganic mineral paper rope has good heat resistance.

Furthermore, the shielding layer is formed by mixing and weaving tinned copper wires and an aluminum foil composite belt, and the weaving coverage rate of the shielding layer is not less than 85%.

By adopting the technical scheme, the cable has good capability of shielding external electromagnetic signal interference.

Further, the sheath layer is a crosslinked polyethylene sheath.

By adopting the technical scheme, the cross-linked polyethylene sheath has the comprehensive properties of good mechanical property, environmental stress cracking resistance, chemical corrosion resistance, temperature resistance, creep resistance, electrical property and the like, and the temperature resistance grade is obviously improved.

To sum up, the utility model discloses mainly have following beneficial effect:

1. the utility model has the advantages that by arranging two armor layers and arranging a plurality of damping springs between the two armor layers, the strength of the cable can be improved, the extrusion resistance of the cable can be improved, and when the cable is extruded, the damping springs can play good buffering and damping functions; simultaneously be provided with a plurality of flexible support piece in the inside of cable, flexible support piece adopts polyurethane rubber to make, and polyurethane rubber has good elasticity, can protect the inside cable core of cable not receive the injury.

2. The utility model discloses a, through being provided with many stretch-proofing ropes in the inside of cable, the stretch-proofing rope is chromium zirconium copper alloy line, and chromium zirconium copper alloy has higher mechanical properties for chromium zirconium copper alloy line's tensile strength is stronger, can protect the cable not receive the damage at the in-process of laying.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. a cable core; 101. a cable core conductor; 102. fire-resistant mica tapes; 103. an insulating layer; 2. Wrapping a belt layer; 3. a filler; 4. a flexible support; 5. a tensile strand; 6. a shielding layer; 7. an inner armor layer; 8. an outer armor layer; 9. a damping spring; 10. a sheath layer.

Detailed Description

In order to make the objects and technical solutions of the present invention clear and fully described, and the advantages thereof more clearly understood, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 1, a high-strength crosslinked insulated cable comprises a plurality of cable cores 1, the plurality of cable cores 1 are twisted with each other, the cable cores 1 sequentially comprise a core conductor 101, a fire-resistant mica tape 102 and an insulating layer 103 from inside to outside, the fire-resistant mica tape 102 is wound outside the core conductor 101, a wrapping tape layer 2 is arranged at the outer end of the cable core 1, a filler 3 is filled in a gap between the cable core 1 and the wrapping tape layer 2, a plurality of flexible supporting members 4 and a plurality of tensile-resistant ropes 5 are arranged inside the filler 3, the flexible supporting members 4 are made of polyurethane rubber, the tensile-resistant ropes 5 are chromium-zirconium alloy wires, chromium and zirconium can form oxides, a copper matrix can achieve the purpose of grain refinement, the tensile strength of the tensile-resistant ropes 5 can be improved, a shielding layer 6 is arranged outside the wrapping tape layer 2, and an inner armor layer 7 is arranged outside the shielding layer 6, the outside of interior armor 7 is provided with outer armor 8, and interior armor 7 adopts the copper strips to overlap around the package with outer armor 8 and forms, and the gap between interior armor 7 and the outer armor 8 is provided with a plurality of damping spring 9, and the crowded package in the outside of outer armor 8 has restrictive coating 10.

Referring to fig. 1, the cable core conductor 101 is formed by twisting a plurality of strands of tinned copper wires and tinned nickel wires in a composite manner, wherein the diameters of the tinned copper wires and the tinned nickel wires are 0.8 mm.

Referring to fig. 1, the insulating layer 103 is made of an extruded cross-linked polyethylene material.

Referring to fig. 1, a tape covering 2 is made of a fire resistant fiber material.

Referring to fig. 1, the filler 3 is an inorganic mineral paper rope.

Referring to fig. 1, the shielding layer 6 is formed by weaving a composite tape of a tinned copper wire and an aluminum foil in a mixed manner, and the weaving coverage rate of the shielding layer 6 is not less than 85%.

Referring to fig. 1, the sheath layer 10 is a crosslinked polyethylene sheath.

When the utility model is used, the two armoring layers are arranged, and the damping springs 9 are arranged between the two armoring layers, so that the strength of the cable can be improved, the extrusion resistance of the cable can be improved, and when the cable is extruded, the damping springs 9 can play a good role in buffering and damping; meanwhile, a plurality of flexible supporting pieces 4 are arranged inside the cable, the flexible supporting pieces 4 are made of polyurethane rubber, and the polyurethane rubber has good elasticity and can protect the cable core 1 inside the cable from being damaged; through being provided with many stretch-proofing ropes 5 in the inside of cable, stretch-proofing rope 5 is chromium zirconium copper alloy line, and chromium zirconium copper alloy has higher mechanical properties for chromium zirconium copper alloy line's tensile strength is stronger, can protect the cable not receive the damage at the in-process of laying.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a high strength crosslinked insulated cable, includes many cable cores (1), its characterized in that: the cable comprises a plurality of cable cores (1) which are mutually twisted, wherein each cable core (1) sequentially comprises a cable core conductor (101), a fire-resistant mica tape (102) and an insulating layer (103) from inside to outside, the fire-resistant mica tape (102) is wound on the outer side of the cable core conductor (101), a wrapping tape layer (2) is arranged at the outer end of each cable core (1), a filler (3) is filled in a gap between each cable core (1) and the wrapping tape layer (2), a plurality of flexible supporting pieces (4) and a plurality of tensile ropes (5) are arranged inside the filler (3), the flexible supporting pieces (4) are made of polyurethane rubber, the tensile ropes (5) are made of chromium-zirconium-copper alloy wires, a shielding layer (6) is arranged on the outer side of the wrapping tape layer (2), an inner armor layer (7) is arranged on the outer side of the shielding layer (6), and an outer armor layer (8) is arranged on the outer side of the inner armor layer (7), interior armor (7) with outer armor (8) adopt the copper strips to overlap around the package and form, interior armor (7) with gap between outer armor (8) is provided with a plurality of damping spring (9), the crowded package in the outside of outer armor (8) has restrictive coating (10).

2. A high strength crosslinked insulated cable according to claim 1, characterized in that: the cable core conductor (101) is formed by twisting a plurality of strands of tinned copper wires and tinned nickel wires in a composite mode, and the diameters of the tinned copper wires and the tinned nickel wires are 0.8 mm.

3. A high strength crosslinked insulated cable according to claim 1, characterized in that: the insulating layer (103) is made of cross-linked polyethylene materials in an extrusion wrapping mode.

4. A high strength crosslinked insulated cable according to claim 1, characterized in that: the wrapping band layer (2) is made of refractory fiber materials.

5. A high strength crosslinked insulated cable according to claim 1, characterized in that: the filler (3) is an inorganic mineral paper rope.

6. A high strength crosslinked insulated cable according to claim 1, characterized in that: the shielding layer (6) is formed by mixing and weaving tinned copper wires and aluminum foil composite tapes, and the weaving coverage rate of the shielding layer (6) is not less than 85%.

7. A high strength crosslinked insulated cable according to claim 1, characterized in that: the sheath layer (10) is a cross-linked polyethylene sheath.