CN213635440U

CN213635440U - Cross-linked polyethylene insulated copper wire shielding low-smoke halogen-free flame-retardant environment-friendly control cable

Info

Publication number: CN213635440U
Application number: CN202023238643.XU
Authority: CN
Inventors: 黄进; 钱灵敏; 束义如; 孙海; 黄小龙; 黄海平; 凌前忠
Original assignee: Jiangxi Xinji Cable Co ltd
Current assignee: Jiangxi Xinji Cable Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-07-06
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses a cross-linked polyethylene insulated copper wire shielded low-smoke halogen-free flame-retardant environment-friendly control cable, which comprises a cable core, and a belting layer, a shielding layer, a buffer layer, an inner liner layer, an armor layer, a tensile layer and a sheath layer which are sequentially coated outside the cable core; the cable core is formed by twisting copper conductors coated with insulating layers, a circle of first toughening cores and a circle of first tensile cores are embedded in the cable core at intervals, and a flame-retardant filling layer is arranged between the cable core and the belting layer; the section of the buffer layer is in a wave ring shape, the buffer layer is made of TPU elastomer materials, a circle of spaced first accommodating cavities are formed between the buffer layer and the shielding layer, second tensile cores are embedded in the first accommodating cavities, a circle of spaced second accommodating cavities are formed between the buffer layer and the inner lining layer, and second toughening cores are embedded in the second accommodating cavities; a circle of third tensile cores are embedded in the sheath layer at intervals. The utility model discloses aim at solving among the prior art problem that control cable's compressive property is poor, tensile strength is poor and toughness is poor.

Description

Cross-linked polyethylene insulated copper wire shielding low-smoke halogen-free flame-retardant environment-friendly control cable

Technical Field

The utility model relates to a control cable technical field especially relates to a fire-retardant environmental protection control cable of low smoke and zero halogen of insulating copper wire shielding of crosslinked polyethylene.

Background

The control cable is suitable for industrial and mining enterprises, energy traffic departments, control and protection circuits with the alternating current rated voltage below 450/750 volts, and the like. Control cables are used in electrical power system trunks to transmit and distribute high power electrical energy, and the control cables transmit electrical energy directly from distribution points of the electrical power system to power supply connections of various consumer appliances. Therefore, the control cable has higher requirements on the working stability under various environments.

The compression resistance and tensile resistance of the existing flame-retardant control cable are poor, the toughness is poor, when the control cable is extruded by external force or pulled by external force, the control cable is easy to deform, and the conditions of damage and fracture can be easily caused by the protective layer and the conductor inside the control cable, so that the normal use of the cable is influenced.

To above technical problem, the utility model discloses a fire-retardant environmental protection control cable of low smoke and zero halogen of insulating copper wire shielding of crosslinked polyethylene, the utility model has the advantages of compressive property and tensile property, improvement control cable's toughness that improve control cable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a fire-retardant environmental control cable of crosslinked polyethylene insulating copper wire shielding low smoke and zero halogen to solve among the prior art fire-retardant control cable's resistance to compression and tensile performance poor, toughness is poor, and when the cable received external force and dragged, the inside protective layer of control cable and conductor all can appear damaged, the cracked condition, thereby influenced technical problem such as the normal use of cable, the utility model has the advantages of improve the compressive property and the tensile strength of control cable, improve the toughness of control cable.

The utility model discloses a following technical scheme realizes: the utility model discloses a cross-linked polyethylene insulated copper wire shielded low-smoke halogen-free flame-retardant environment-friendly control cable, which comprises a cable core, and a belting layer, a shielding layer, a buffer layer, an inner liner layer, an armor layer, a tensile layer and a sheath layer which are sequentially coated outside the cable core, wherein the shielding layer is formed by weaving copper wires, and the sheath layer is made of flame-retardant polyolefin material; the cable core is formed by twisting copper conductors coated with an insulating layer, the insulating layer is made of cross-linked polyethylene materials, a circle of first toughening cores and a circle of first tensile cores are embedded in the cable core at intervals, the first tensile cores are positioned on the outer sides of the first toughening cores, and a flame-retardant filling layer is further arranged between the cable core and the belting layer; the section of the buffer layer is in a shape of a wavy ring, the buffer layer is made of TPU (thermoplastic polyurethane) elastomer material, the inner side of the buffer layer is in close contact with the shielding layer, a circle of spaced first accommodating cavities are formed between the buffer layer and the shielding layer, second tensile cores are embedded in the first accommodating cavities, the outer side of the buffer layer is in close contact with the inner liner layer, a circle of spaced second accommodating cavities are formed between the buffer layer and the inner liner layer, and second toughening cores are embedded in the second accommodating cavities; a circle of third tensile cores are embedded in the sheath layer at intervals.

Preferably, in order to improve the toughness of the control cable, the first toughening core and the second toughening core are both made of nylon materials.

Preferably, in order to improve the tensile property of the control cable, the first tensile core, the second tensile core and the third tensile core are aramid fiber ropes.

Preferably, in order to improve the flame retardant performance of the control cable, the flame retardant filling layer is filled with a flame retardant rope.

Preferably, the belting layer is formed by wrapping a polyester belting.

Preferably, the inner liner is formed by wrapping a PVC belt.

Preferably, the armor layer is formed by wrapping galvanized steel strips.

Preferably, in order to improve the tensile property of the control cable, the tensile layer is formed by weaving aramid fibers.

The utility model has the advantages of it is following:

(1) in the utility model, a buffer layer is arranged between the shielding layer and the inner liner layer, the cross section of the buffer layer is in a shape of a wave ring, and the buffer layer is made of TPU elastomer material, so that the pressure on the control cable is well buffered through the buffer layer, the structure in the control cable is well protected, and the compression resistance of the control cable is improved;

(2) in the utility model, a circle of first tensile core is embedded in the cable core, a circle of spaced first holding cavity is formed between the buffer layer and the shielding layer, a circle of second tensile core is embedded in the first holding cavity, a circle of third tensile core is embedded in the sheath layer at intervals, and a tensile layer is arranged between the armor layer and the sheath layer, so that the tensile property of the control cable is obviously improved;

(3) the utility model discloses in, still inlay in the cable core and be equipped with first toughening core, be formed with round spaced second holding chamber between buffer layer and the inner liner, second holding intracavity inlays and is equipped with the second toughening core to show the toughness that has promoted control cable.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

fig. 2 is an enlarged schematic view of a structure in fig. 1.

In the figure: 1. a cable core; 11. an insulating layer; 12. a copper conductor; 13. a first toughening core; 14. a first tensile core; 2. a belting layer; 3. a shielding layer; 4. a buffer layer; 41. a first accommodating cavity; 42. a second accommodating cavity; 5. an inner liner layer; 6. an armor layer; 7. a tensile layer; 8. a sheath layer; 81. a third tensile core; 9. a flame retardant filler layer; 10. a second tensile core; 100. a second toughening core.

Detailed Description

The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example 1

Embodiment 1 discloses a cross-linked polyethylene insulated copper wire shielded low-smoke halogen-free flame-retardant environment-friendly control cable, which comprises a cable core 1, and a belting layer 2, a shielding layer 3, a buffer layer 4, an inner liner layer 5, an armor layer 6, a tensile layer 7 and a sheath layer 8 which are sequentially coated outside the cable core 1, wherein the belting layer 2 is formed by wrapping polyester belting, the shielding layer 3 is formed by weaving copper wires, the inner liner layer 5 is formed by wrapping PVC (polyvinyl chloride) belts, the armor layer 6 is formed by wrapping galvanized steel belts, the tensile layer 7 is formed by weaving aramid fibers, and the sheath layer 8 is made of a flame-retardant polyolefin material; the cable core 1 is formed by twisting copper conductors 12 coated with an insulating layer 11, the insulating layer 11 is made of a cross-linked polyethylene material, a circle of first toughening cores 13 and a circle of first tensile cores 14 are embedded in the cable core 1 at intervals, the first tensile cores 14 are positioned on the outer sides of the first toughening cores 13, a flame-retardant filling layer 9 is further arranged between the cable core 1 and the belting layer 2, and the flame-retardant filling layer 9 is formed by filling flame-retardant ropes; the section of the buffer layer 4 is in a shape of a wave ring, and the buffer layer 4 is made of TPU elastomer material; as shown in fig. 2, the inner side of the buffer layer 4 is in close contact with the shielding layer 3, a circle of spaced first accommodating cavities 41 is formed between the buffer layer 4 and the shielding layer 3, second tensile cores 10 are embedded in the first accommodating cavities 41, the outer side of the buffer layer 4 is in close contact with the lining layer 5, a circle of spaced second accommodating cavities 42 is formed between the buffer layer 4 and the lining layer 5, second toughening cores 100 are embedded in the second accommodating cavities 42, and the first toughening cores 13 and the second toughening cores 100 are both made of nylon materials; as shown in fig. 1, a circle of third tensile core 81 is embedded in the sheath layer 8 at intervals, and the first tensile core 14, the second tensile core 10 and the third tensile core 81 are all aramid fiber ropes.

The principle of the utility model is as follows: in the utility model, the buffer layer 4 is arranged between the shielding layer 3 and the inner liner layer 5, the section of the buffer layer 4 is in a shape of a wave ring, and the buffer layer 4 is made of TPU elastomer material, so that the pressure on the control cable is buffered through the buffer layer 4, the structure in the control cable is protected well, and the compression resistance of the control cable is improved; in the utility model, a circle of first tensile core 14 is embedded in the cable core 1, a circle of spaced first accommodating cavity 41 is formed between the buffer layer 4 and the shielding layer 3, a circle of second tensile core 10 is embedded in the first accommodating cavity 41, a circle of third tensile core 81 is embedded in the sheath layer 8 at intervals, and a tensile layer 7 is arranged between the armor layer 6 and the sheath layer 8, so that the tensile property of the control cable is obviously improved; the utility model discloses in, still inlay in the cable core 1 and be equipped with first toughening core 13, be formed with round spaced second holding chamber 42 between buffer layer 4 and the inner liner 5, the embedded second toughening core 100 that is equipped with in second holding chamber 42 to show the toughness that has promoted control cable.

Claims

1. The cross-linked polyethylene insulated copper wire shielded low-smoke halogen-free flame-retardant environment-friendly control cable is characterized by comprising a cable core, and a belting layer, a shielding layer, a buffer layer, an inner liner layer, an armor layer, a tensile layer and a sheath layer which are sequentially coated outside the cable core, wherein the shielding layer is formed by weaving copper wires, and the sheath layer is made of a flame-retardant polyolefin material;

the cable core is formed by twisting copper conductors coated with an insulating layer, the insulating layer is made of cross-linked polyethylene materials, a circle of first toughening cores and a circle of first tensile cores are embedded in the cable core at intervals, the first tensile cores are positioned on the outer side of the first toughening cores, and a flame-retardant filling layer is further arranged between the cable core and the belting layer;

the section of the buffer layer is in a shape of a wavy ring, the buffer layer is made of TPU (thermoplastic polyurethane) elastomer material, the inner side of the buffer layer is in close contact with the shielding layer, a circle of spaced first accommodating cavities are formed between the buffer layer and the shielding layer, second tensile cores are embedded in the first accommodating cavities, the outer side of the buffer layer is in close contact with the inner lining layer, a circle of spaced second accommodating cavities are formed between the buffer layer and the inner lining layer, and second tensile cores are embedded in the second accommodating cavities;

and a circle of third tensile cores are embedded in the sheath layer at intervals.

2. The cross-linked polyethylene insulated copper wire-shielded low-smoke halogen-free flame-retardant environment-friendly control cable according to claim 1, wherein the first toughening core and the second toughening core are both made of nylon materials.

3. The cross-linked polyethylene insulated copper wire-shielded low-smoke halogen-free flame-retardant environment-friendly control cable as claimed in claim 1, wherein the first tensile core, the second tensile core and the third tensile core are aramid fiber ropes.

4. The cross-linked polyethylene insulated copper wire-shielded low-smoke halogen-free flame-retardant environment-friendly control cable as claimed in claim 1, wherein the flame-retardant filling layer is filled with flame-retardant ropes.

5. The cross-linked polyethylene insulated copper wire shielding low-smoke halogen-free flame-retardant environment-friendly control cable as claimed in claim 1, wherein the wrapping layer is formed by wrapping polyester wrapping tapes.

6. The cross-linked polyethylene insulated copper wire-shielded low-smoke halogen-free flame-retardant environment-friendly control cable as claimed in claim 1, wherein the inner liner is formed by wrapping a PVC tape.

7. The cross-linked polyethylene insulated copper wire-shielded low-smoke halogen-free flame-retardant environment-friendly control cable as claimed in claim 1, wherein the armor layer is formed by wrapping galvanized steel strips.

8. The cross-linked polyethylene insulated copper wire shielding low-smoke halogen-free flame-retardant environment-friendly control cable as claimed in claim 1, wherein the tensile layer is woven by aramid fibers.