CN210378520U

CN210378520U - Polyethylene-based insulated control cable

Info

Publication number: CN210378520U
Application number: CN201921362536.2U
Authority: CN
Inventors: 吴学明; 吴迪
Original assignee: Jiangsu Ruiyang Cable Co ltd
Current assignee: Jiangsu Ruiyang Cable Co ltd
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-04-21
Anticipated expiration: 2029-08-21

Abstract

The utility model discloses an insulation control cable based on polyethylene in the technical field of insulation control cable based on polyethylene, the outer wall of twisted copper conductor is bonded with a cross-linked polyethylene insulating layer, a strippable polyethylene shielding layer is bonded on the outer wall of the cross-linked polyethylene insulating layer, a steel band shielding sleeve is fixedly bonded on the outer wall of the strippable polyethylene shielding layer, a flame-retardant wrapping tape is fixedly arranged outside the steel band shielding sleeve, a reinforcing layer is fixedly extruded on the outer wall of the flame-retardant wrapping tape, an isolation sleeve is fixedly bonded on the outer wall of the reinforcing layer, a steel band armor is fixedly bonded on the outer wall of the isolation sleeve, a flame-retardant polyolefin sheath is fixedly bonded on the outer wall of the steel band armor, an aluminum-plastic alloy tape is fixedly bonded on the inner wall of a compression cavity, and two groups of supporting springs fixed on the inner wall of the compression cavity are arranged between the aluminum-plastic alloy tapes, has good insulating electrical property, anti-interference property and high flame retardant property.

Description

Polyethylene-based insulated control cable

Technical Field

The utility model relates to an insulated control cable technical field based on polyethylene specifically is an insulated control cable based on polyethylene.

Background

The control cable is used for transmitting control signals, the control cable mainly solves the problems of weak transmission signals, signal interference, signal distortion and the like, and therefore the requirements for flame retardance and interference resistance of the cables are higher and higher, but the existing shielding type control cable is characterized in that a PVC (polyvinyl chloride) insulating layer is extruded on a copper conductor, an inner sheath is additionally arranged after an aluminum-plastic composite film is wrapped outside the copper conductor, a plurality of single wires are twisted and filled in gaps, and then an outer sheath is additionally arranged, because polyvinyl chloride belongs to halogen-containing materials, the manufactured control cable does not meet the low-carbon environmental protection requirements, the existing flame-retardant cable adopts common polyvinyl chloride as insulation and the sheath, the flame retardance is not high while the environmental protection performance is required to be enhanced, and therefore the insulating control cable based on polyethylene is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an insulated control cable based on polyethylene to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an insulation control cable based on polyethylene comprises a twisted copper conductor, wherein a cross-linked polyethylene insulation layer is bonded on the outer wall of the twisted copper conductor, a strippable polyethylene shielding layer is bonded on the outer wall of the crosslinked polyethylene insulating layer, a steel strip shielding sleeve is fixedly bonded on the outer wall of the strippable polyethylene shielding layer, the outer side of the steel belt shielding sleeve is fixedly provided with a flame-retardant wrapping tape, the outer wall of the flame-retardant wrapping tape is fixedly wrapped with a reinforcing layer, an isolation sleeve is fixedly bonded on the outer wall of the reinforcing layer, a steel strip armor is fixedly bonded on the outer wall of the isolation sleeve, the outer wall of the steel tape armor is fixedly bonded with a flame-retardant polyolefin sheath, the inner cavity of the reinforcing layer is uniformly provided with compression cavities along the circumferential direction, the inner wall of each compression cavity is fixedly bonded with an aluminum-plastic alloy tape, and a supporting spring fixed on the inner wall of the compression cavity is arranged between the two groups of the aluminum-plastic alloy belts.

Preferably, the compression cavities are uniformly arranged in six groups of hollow cavities with the same structure along the circumferential direction of the reinforcing layer, and the compression cavities are intermittently and uniformly arranged along the length direction of the cable.

Preferably, the aluminum-plastic alloy belt is fixedly bonded at the top and the bottom in the compression cavity through a PU adhesive layer, and the two sections of the supporting springs are respectively fixed on the left side wall and the right side wall in the compression cavity.

Preferably, the inner cavity of the crosslinked polyethylene insulating layer is provided with a flame-retardant fireproof asbestos filling rope in an embedded manner, and the flame-retardant fireproof asbestos filling rope is arranged along the length direction of the cable.

Preferably, the strippable polyethylene shielding layer is a conductor shielding sleeve, and the strippable polyethylene shielding layer is a semi-conducting layer, and the resistivity is not more than 500 ohm meters.

Preferably, the surface of the flame-retardant polyolefin sheath is uniformly provided with uneven patterns, and the outer wall of the flame-retardant polyolefin sheath is sprayed with a wear-resistant layer.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of reasonable design, can improve the fire-retardant fire resistance of cable greatly through fire-retardant polyolefin sheath, can guarantee through crosslinked polyethylene insulating layer that the transposition copper conductor has good insulating electrical property, can prevent the electric current from leaking again, reduce the loss, can impel electric field evenly distributed through steel band shield cover and strippable polyethylene shielding layer, improve the interference immunity of transposition copper conductor, can homogenize the electric field through the steel band shield cover, improve the transmission ability of transposition copper conductor number data information, can also do ground protection, can realize the isolation steel band through the isolation cover, prevent the steel band oxidation, improve the protection to the steel band shield cover, fire-retardant wrapping tape can increase the compactness of cable, improve the tensile strength simultaneously, can increase the intensity and the mechanical properties of cable through the armor steel band, in addition the compression cavity in the enhancement layer can realize carrying out the effect of buffering to the extrusion that the cable received, meanwhile, the aluminum-plastic alloy belt and the supporting spring can be stretched or compressed to respond to the circumferential torsion moment applied to the cable, so that the pressure resistance and torsion resistance of the cable are improved, and the environment-friendly effect is good.

Drawings

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

In the figure: the cable comprises a flame-retardant polyolefin jacket 1, a steel belt armor 2, an isolation sleeve 3, a reinforcing layer 4, a flame-retardant wrapping belt 5, a steel belt shielding sleeve 6, a peelable polyethylene shielding layer 7, a crosslinked polyethylene insulating layer 8, a stranded copper conductor 9, a compression cavity 10, an aluminum-plastic alloy belt 11 and a supporting spring 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: an insulation control cable based on polyethylene comprises a stranded copper conductor 9, a crosslinked polyethylene insulation layer 8 is bonded on the outer wall of the stranded copper conductor 9, a peelable polyethylene shielding layer 7 is bonded on the outer wall of the crosslinked polyethylene insulation layer 8, a steel strip shielding sleeve 6 is fixedly bonded on the outer wall of the peelable polyethylene shielding layer 7, a flame-retardant wrapping tape 5 is fixedly arranged on the outer side of the steel strip shielding sleeve 6, a reinforcing layer 4 is fixedly extruded on the outer wall of the flame-retardant wrapping tape 5, an isolating sleeve 3 is fixedly bonded on the outer wall of the reinforcing layer 4, a steel strip armor 2 is fixedly bonded on the outer wall of the isolating sleeve 3, a flame-retardant polyolefin sheath 1 is fixedly bonded on the outer wall of the steel strip armor 2, compression cavities 10 are uniformly arranged in the inner cavity of the reinforcing layer 4 along the circumferential direction, aluminum-plastic alloy tapes 11 are fixedly bonded on the inner wall of the compression cavities 10, and supporting springs 12 fixed on the inner wall of the compression cavities 10 are arranged between the two, the flame-retardant fireproof performance of the cable can be greatly improved through the flame-retardant polyolefin sheath 1, the stranded copper conductor 9 can be ensured to have good insulating electrical performance through the crosslinked polyethylene insulating layer 8, the current can be prevented from leaking, the loss is reduced, the electric field can be uniformly distributed through the steel strip shielding sleeve 6 and the strippable polyethylene shielding layer 7, the anti-interference performance of the stranded copper conductor 9 is improved, the electric field can be homogenized through the steel strip shielding sleeve 6, the transmission capability of data information of the stranded copper conductor 9 is improved, the grounding protection can also be realized, the steel strip can be isolated through the isolating sleeve 3, the oxidation of the steel strip is prevented, the protection of the steel strip shielding sleeve 6 is improved, the compactness of the cable can be increased through the flame-retardant wrapping tape 5, the tensile strength is improved, the strength and the mechanical performance of the cable can be increased through the steel strip armor 2, in addition, the compression cavity 10 in the reinforcing layer 4 can realize the, meanwhile, the aluminum-plastic alloy belt 11 and the supporting spring 12 can be stretched or compressed to respond to the circumferential torsion moment applied to the cable, so that the pressure resistance and torsion resistance of the cable are improved.

Referring to fig. 1, six groups of hollow cavities with the same structure are uniformly arranged in the compression cavity 10 along the circumferential direction of the reinforcing layer 4, and the compression cavities 10 are intermittently and uniformly arranged along the length direction of the cable, so that impact on the outer wall of the cable can be buffered, and the pressure resistance of the cable can be improved;

referring to fig. 1, an aluminum-plastic alloy belt 11 is fixedly bonded to the top and the bottom of a compression cavity 10 through a PU adhesive layer, two sections of a supporting spring 12 are respectively fixed to the left and right side walls of the compression cavity 10, and both the aluminum-plastic alloy belt 11 and the supporting spring 12 can be extended or compressed to respond to a circumferential torsion moment applied to a cable;

the inner cavity of the crosslinked polyethylene insulating layer 8 is provided with the flame-retardant fireproof asbestos filling rope in an embedded mode, and the flame-retardant fireproof asbestos filling rope is arranged along the length direction of the cable, so that the stranded copper conductor 9 can be guaranteed to have good insulating electrical performance, current can be prevented from leaking, and loss is reduced;

the strippable polyethylene shielding layer 7 is a conductor shielding sleeve, the strippable polyethylene shielding layer 7 is a semi-conducting layer, and the resistivity is not more than 500 ohm meters;

unevenness's decorative pattern has evenly been seted up on the surface of fire-retardant polyolefin sheath 1, and the spraying has the wearing layer on the outer wall of fire-retardant polyolefin sheath 1, can improve the wearability of fire-retardant polyolefin sheath 1 through this kind of setting.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A polyethylene-based insulated control cable, characterized in that: the cable comprises a stranded copper conductor (9), a cross-linked polyethylene insulating layer (8) is bonded on the outer wall of the stranded copper conductor (9), a peelable polyethylene shielding layer (7) is bonded on the outer wall of the cross-linked polyethylene insulating layer (8), a steel strip shielding sleeve (6) is fixedly bonded on the outer wall of the peelable polyethylene shielding layer (7), a flame-retardant wrapping tape (5) is fixedly arranged on the outer side of the steel strip shielding sleeve (6), a reinforcing layer (4) is fixedly wrapped on the outer wall of the flame-retardant wrapping tape (5), an isolating sleeve (3) is fixedly bonded on the outer wall of the reinforcing layer (4), a steel strip armor (2) is fixedly bonded on the outer wall of the isolating sleeve (3), a flame-retardant polyolefin sheath (1) is fixedly bonded on the outer wall of the steel strip armor (2), and compression cavities (10) are uniformly formed in the inner cavity of the reinforcing layer (4) along the circumferential direction, and aluminum-plastic alloy belts (11) are fixedly bonded on the inner wall of the compression cavity (10), and a support spring (12) fixed on the inner wall of the compression cavity (10) is arranged between the two groups of aluminum-plastic alloy belts (11).

2. A polyethylene-based insulated control cable according to claim 1, characterized in that: the compression cavities (10) are uniformly arranged into six groups of hollow cavities with the same structure along the circumferential direction of the reinforcing layer (4), and the compression cavities (10) are intermittently and uniformly arranged along the length direction of the cable.

3. A polyethylene-based insulated control cable according to claim 2, characterized in that: the aluminum-plastic alloy belt (11) is fixedly bonded at the top and the bottom in the compression cavity (10) through a PU adhesive layer, and two sections of the supporting spring (12) are respectively fixed on the left side wall and the right side wall in the compression cavity (10).

4. A polyethylene-based insulated control cable according to claim 1, characterized in that: and a flame-retardant fireproof asbestos filling rope is nested in the inner cavity of the crosslinked polyethylene insulating layer (8), and is arranged along the length direction of the cable.

5. A polyethylene-based insulated control cable according to claim 1, characterized in that: the strippable polyethylene shielding layer (7) is a conductor shielding sleeve, the strippable polyethylene shielding layer (7) is a semi-conducting layer, and the resistivity is not more than 500 ohm meters.

6. A polyethylene-based insulated control cable according to claim 1, characterized in that: uneven patterns are uniformly arranged on the surface of the flame-retardant polyolefin sheath (1), and a wear-resistant layer is sprayed on the outer wall of the flame-retardant polyolefin sheath (1).