CN215834263U

CN215834263U - Cross-linked polyethylene insulation composite shielding flame-retardant control cable

Info

Publication number: CN215834263U
Application number: CN202121791384.5U
Authority: CN
Inventors: 卢英斌; 卢蛟; 黄伟; 叶银珠
Original assignee: Anhui Zhongtong Cable Technology Co ltd
Current assignee: Anhui Zhongtong Cable Technology Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-02-15
Anticipated expiration: 2031-08-02

Abstract

The utility model provides a crosslinked polyethylene insulation composite shielding flame-retardant control cable, which comprises a plurality of copper conductors, wherein a crosslinked polyethylene insulation layer is coated outside each copper conductor, a fixed snap ring is arranged on the periphery of the crosslinked polyethylene insulation layer, the fixed snap ring is internally tangent to a polyester tape winding tape, a composite shielding layer is arranged on the periphery of the polyester tape winding tape, a flame-retardant layer is arranged outside each composite shielding layer, an outer sheath is coated on the periphery of each flame-retardant layer, each outer sheath comprises an outer lining layer, an inner lining layer and a buffering elastic part, a buffering cavity is formed between the outer lining layer and the inner lining layer, a first clamping cavity and a second clamping cavity are alternately arranged on two side walls of the buffering cavity, each buffering elastic part comprises a wavy elastic sheet, a first spring and a second spring, bulges on two sides of the wavy elastic sheet are movably clamped in the first clamping cavity and the second clamping cavity respectively, the first spring is a transverse spring and is positioned in gaps among bulges on the outer sides of the wavy elastic sheet, the second spring is a vertical spring and is positioned in a gap between the inner bulge of the wavy elastic sheet and the outer lining layer.

Description

Cross-linked polyethylene insulation composite shielding flame-retardant control cable

Technical Field

The utility model relates to the technical field of electric wires and cables, in particular to a crosslinked polyethylene insulation composite shielding flame-retardant control cable.

Background

A cable is a conductor made of one or more conductors insulated from each other and an outer insulating sheath that carries power or information from one location to another. Cables are generally rope-like cables made by stranding several or groups of conductors (at least two in each group), each group being insulated from each other and often twisted around a center, the entire outer surface being coated with a highly insulating coating. The cable is of various types, such as power cable, control cable, compensation cable, shielding cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resistant cable, marine cable, mining cable, aluminum alloy cable and the like, wherein the control cable is suitable for industrial and mining enterprises, energy traffic departments, occasions for controlling and protecting lines with alternating current rated voltage below 450/750 volts and the like. However, in the prior art, the flexibility of the flame-retardant control cable is insufficient, the anti-distortion performance is low, the flame-retardant performance is poor, and the use requirement of people on the cable cannot be met.

Therefore, the utility model provides a crosslinked polyethylene insulation composite shielding flame-retardant control cable to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a crosslinked polyethylene insulation composite shielding flame-retardant control cable.

In order to solve the technical problems, the utility model provides the following technical scheme: a cross-linked polyethylene insulation composite shielding flame-retardant control cable comprises a plurality of copper conductors, wherein cross-linked polyethylene insulation layers are coated outside the plurality of copper conductors, fixed snap rings are arranged on the peripheries of the cross-linked polyethylene insulation layers, every two adjacent fixed snap rings are meshed with each other and are internally tangent to a polyester tape winding band, a composite shielding layer is arranged on the periphery of the polyester tape winding band, a flame-retardant layer is arranged outside the composite shielding layer, an outer sheath is coated on the periphery of the flame-retardant layer and is made of an outer lining layer, an inner lining layer and a buffering elastic part in a combined mode, a buffering cavity for mounting the buffering elastic part is formed between the outer lining layer and the inner lining layer, a first clamping cavity and a second clamping cavity are alternately formed in two side walls of the buffering cavity, the buffering elastic part comprises a wavy elastic piece, a first spring and a second spring, bulges on two sides of the wavy elastic piece are movably clamped in the first clamping cavity and the second clamping cavity respectively, the first spring is a transverse spring and is located in a gap protruding outside the wavy elastic sheet, the second spring is a vertical spring and is located in a gap between an inner protrusion of the wavy elastic sheet and an outer lining layer, the bending resistance and the extrusion resistance of the cable can be improved, and the service life of the power cable is prolonged.

As a preferred technical scheme, the composite shielding layer comprises an aluminum-plastic composite belt and a tinned copper wire, a tinned drainage wire is placed below the composite shielding layer, and the sectional area of the tinned drainage wire is not less than 0.20mm²。

As a preferable technical scheme, the flame-retardant layer is internally provided with an accommodating groove, and the flame-retardant rubber sheet is placed in the accommodating groove, so that the flame retardance is good.

As a preferable technical scheme, the outer lining layer forms a wear-resistant bulge corresponding to the outer wall of the first clamping cavity, and the inner lining layer forms a positioning bulge corresponding to the inner wall of the second clamping cavity, so that the integral stability and the wear resistance of the cable are improved.

As a preferred technical scheme, the positioning clamping groove is formed in the position, corresponding to the positioning protrusion, of the outer wall of the flame-retardant layer, and therefore the overall stability of the cable is improved.

As a preferred technical scheme of the utility model, the outer sheath is made of flame-retardant polyvinyl chloride material and has good flame retardance.

The utility model has the following beneficial effects: according to the cross-linked polyethylene insulation composite shielding flame-retardant control cable provided by the utility model, the fixing snap rings are arranged outside each copper conductor, and every two adjacent fixing snap rings are meshed, so that the stability of the inside of a wire core is favorably improved; and the buffering elastic piece is arranged, so that the bending resistance and the extrusion resistance of the cable can be improved, and the service life of the power cable is prolonged.

The utility model will be explained in more detail below with reference to the drawings and examples.

Drawings

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

In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of a flame retardant layer of the present invention;

FIG. 3 is an exploded view of the outer jacket structure of the present invention;

reference numbers in the figures: 1. a copper conductor; 2. a crosslinked polyethylene insulating layer; 3. fixing the snap ring; 4. wrapping a polyester tape with a wrapping tape; 5. a composite shielding layer; 6. a flame retardant layer; 7. an outer sheath; 8. an outer liner layer; 9. an inner liner layer; 10. a buffer chamber; 11. a first card cavity; 12. a second card cavity; 13. a wave-shaped elastic sheet; 14. a first spring; 15. a second spring; 16. accommodating grooves; 17. a flame retardant rubber sheet; 18. wear-resistant protrusions; 19. positioning the projection; 20. and a positioning clamping groove.

Detailed Description

The terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like in the specification indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" 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," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b): as shown in fig. 1-3, the cross-linked polyethylene insulated composite shielded flame-retardant control cable provided by the utility model comprises a plurality of copper conductors 1, wherein cross-linked polyethylene insulating layers 2 are coated outside the copper conductors 1, fixing snap rings 3 are arranged on the peripheries of the cross-linked polyethylene insulating layers 2, and every two adjacent fixing snap rings 3 are engaged with each other, so that high stability is provided between insulated wire cores in a cable core; the fixed snap ring 3 is internally tangent to the polyester tape winding belting 4, the periphery of the polyester tape winding belting 4 is provided with a composite shielding layer 5, the outer part of the composite shielding layer 5 is provided with a flame-retardant layer 6, the periphery of the flame-retardant layer 6 is coated with an outer sheath 7, the outer sheath 7 is formed by combining an outer lining layer 8, an inner lining layer 9 and a buffering elastic part, a buffering cavity 10 for mounting the buffering elastic part is formed between the outer lining layer 8 and the inner lining layer 9, two side walls of the buffering cavity 10 are alternately provided with a first clamping cavity 11 and a second clamping cavity 12, the buffering elastic part comprises a wavy elastic sheet 13, a first spring 14 and a second spring 15, bulges at two sides of the wavy elastic sheet 13 are respectively and movably clamped in the first clamping cavity 11 and the second clamping cavity 12, the first spring 14 is a transverse spring and is positioned in a gap between the bulges at the outer part of the wavy elastic sheet 13, the second spring 15 is a vertical spring and is positioned in a gap between the bulges at the inner part of the wavy elastic sheet 13 and the outer lining layer 8, the bending resistance and the extrusion resistance of the cable can be improved, and the service life of the power cable is prolonged.

Further, the composite shielding layer 5 comprises an aluminum-plastic composite belt and a tinned copper wire, and a tinned drainage wire is placed under the composite shielding layer 5.

Furthermore, holding tank 16 has been seted up to fire-retardant layer 6's inside, has placed fire-retardant rubber piece 17 in the holding tank 16, and the fire retardance is good.

Furthermore, the outer lining layer 8 forms a wear-resistant bulge 18 corresponding to the outer wall of the first clamping cavity 11, and the inner lining layer 9 forms a positioning bulge 19 corresponding to the inner wall of the second clamping cavity 12, so that the overall stability and the wear resistance of the cable are improved.

Furthermore, the outer wall of the flame-retardant layer 6 is provided with a positioning clamping groove 20 at a position corresponding to the positioning protrusion 19, which is beneficial to improving the overall stability of the cable.

Furthermore, the outer sheath 7 is made of flame-retardant polyvinyl chloride material and has good flame retardance.

The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

The parts not involved in the present invention are the same as or can be implemented using the prior art.

Claims

1. The cross-linked polyethylene insulation composite shielding flame-retardant control cable is characterized by comprising a plurality of copper conductors (1), wherein the outer parts of the plurality of copper conductors (1) are coated with cross-linked polyethylene insulation layers (2), the peripheries of the cross-linked polyethylene insulation layers (2) are provided with fixed snap rings (3), every two adjacent fixed snap rings (3) are meshed with each other, the fixed snap rings (3) are internally tangent to polyester tape winding tapes (4), the peripheries of the polyester tape winding tapes (4) are provided with composite shielding layers (5), the outer parts of the composite shielding layers (5) are provided with flame-retardant layers (6), the peripheries of the flame-retardant layers (6) are coated with outer sheaths (7), the outer sheaths (7) are formed by combining outer lining layers (8), inner lining layers (9) and buffer elastic pieces, buffer cavities (10) for mounting the buffer elastic pieces are formed between the outer lining layers (8) and the inner lining layers (9), and two side walls of the buffer cavities (10) are alternately provided with first clamping cavities (11) and second clamping cavities (12), buffering elastic component includes wavy shell fragment (13), first spring (14) and second spring (15), and the arch of wavy shell fragment (13) both sides is movable the card respectively and is established in first card chamber (11) and second card chamber (12), and first spring (14) are horizontal spring, are arranged in the outside bellied space of wavy shell fragment (13), and second spring (15) are vertical spring, are arranged in the space between the inside arch of wavy shell fragment (13) and outer lining layer (8).

2. The cross-linked polyethylene insulated composite shielded flame-retardant control cable according to claim 1, characterized in that the composite shielding layer (5) comprises an aluminum-plastic composite tape and a tinned copper wire, and a tinned drainage wire is placed under the composite shielding layer (5).

3. The cross-linked polyethylene insulation composite shielding flame-retardant control cable according to claim 1, wherein the flame-retardant layer (6) is provided with an accommodating groove (16) therein, and the accommodating groove (16) is internally provided with a flame-retardant rubber sheet (17).

4. The cross-linked polyethylene insulation composite shielding flame-retardant control cable according to claim 1, characterized in that the outer lining layer (8) forms a wear-resistant protrusion (18) corresponding to the outer wall of the first clamping cavity (11), and the inner lining layer (9) forms a positioning protrusion (19) corresponding to the inner wall of the second clamping cavity (12).

5. The cross-linked polyethylene insulation composite shielding flame-retardant control cable according to claim 4, wherein the outer wall of the flame-retardant layer (6) is provided with a positioning clamping groove (20) at a position corresponding to the positioning protrusion (19).

6. The cross-linked polyethylene insulation composite shielding flame-retardant control cable according to claim 1, wherein the outer sheath (7) is made of flame-retardant polyvinyl chloride material.