CN109003717B

CN109003717B - Anti-interference control cable

Info

Publication number: CN109003717B
Application number: CN201810618779.1A
Authority: CN
Inventors: 吴娟
Original assignee: Individual
Current assignee: King Kong Cable Industry Co ltd
Priority date: 2018-06-15
Filing date: 2018-06-15
Publication date: 2020-09-25
Anticipated expiration: 2038-06-15
Also published as: CN109003717A

Abstract

The invention discloses an anti-interference control cable which comprises a plurality of wire cores (1), an insulating layer (2) and a protective layer (3) which are coated outside the wire cores, and a central isolation wire harness (4), wherein the wire cores are wound around the central isolation wire harness and tangent to the central isolation wire harness, a certain gap is reserved between the insulating layers of two adjacent wire cores, the central isolation wire harness is fixedly connected with an isolation piece (5) which passes through the gap, and the tail end of the isolation piece is fixedly connected with the inner surface of the protective layer. The control cable has the advantages that the center of the control cable is provided with the center isolation wire harness to isolate each wire core, and the isolating piece is arranged between the gaps between two adjacent wire cores to prevent the wire cores from being contacted with each other and ensure that no electrical interference is generated between the adjacent wire cores; the control cable is convenient to maintain due to the existence of the opening and closing part, the outer-layer embedded part is pulled outwards by the opening and closing part, the protective layer of the control cable can be smoothly opened, and the protective layer does not need to be stripped by means of a cutter.

Description

Anti-interference control cable

Technical Field

The invention relates to the field of electrical equipment, in particular to a control cable.

Background

The control cable is a polyvinyl chloride insulation and polyvinyl chloride sheath control cable suitable for industrial and mining enterprises, energy traffic departments, occasions for controlling and protecting lines with the alternating current rated voltage of below 450/750 volts, and the like. The control cable has the characteristics of moisture resistance, corrosion resistance, damage resistance and the like, and can be laid in a tunnel or a cable trench. Control cables transmit electrical energy from distribution points of an electrical power system directly to power connections of various consumer appliances. The control cable belongs to the cable for electric equipment, and the power cable is 2 of five main types of cables. The structure of the cable is basically similar to that of a power cable, and the cable comprises a wire core (conductor), an insulating layer, a shielding layer and a protective layer. The core is the conductive part of the control cable, is used for transmitting electric energy, and is the main part of the control cable. The insulating layer electrically isolates the wire cores from the ground and the wire cores of different phases, ensures electric energy transmission and is an indispensable component in a control cable structure. The protective layer functions to protect the control cable from external impurities and moisture, and to prevent external force from directly damaging the control cable.

The Chinese patent publication No. CN103226999A discloses a flame-retardant and fire-resistant marine control cable and a manufacturing method thereof, wherein flame-retardant and fire-resistant ethylene propylene rubber insulating layers are uniformly extruded and wrapped on the periphery of a stranded copper conductor to form a control cable insulating core, a plurality of control cable insulating cores are mutually stranded to form a control cable core, a low-strength non-woven fabric longitudinal wrapping layer wraps the periphery of the control cable core, an inner sheath wraps the periphery of the low-strength non-woven fabric longitudinal wrapping layer, an armor weaving layer wraps the periphery of the inner sheath, and an outer sheath wraps the periphery of the armor weaving layer. The wire cores of the control cable are in close contact, and the electrical interference among the wire cores is serious.

Disclosure of Invention

The invention aims to solve the technical problem that the normal work of a cable is influenced by the electrical interference among the wire cores of the existing control cable, and therefore the anti-interference control cable is provided.

The technical scheme of the invention is as follows: anti-interference type control cable, it includes a plurality of sinle silks, cladding insulating layer and protective layer outside the sinle silk, it still includes central isolation pencil, the sinle silk is around keeping apart around the pencil at the center and tangent rather than, leaves certain clearance between the insulating layer of two adjacent sinle silks, central isolation pencil rigid coupling has the separator through this clearance, the terminal of separator and the internal surface rigid coupling of protective layer.

In the scheme, the isolating piece is tangent to the insulating layer of one wire core between the gaps, so that the isolating piece is arc-shaped.

In the above solution, the spacer is a flexible member.

The improvement of the scheme is that the radial outer surface of the protective layer is provided with an opening and closing part, the opening and closing part comprises an outer layer embedding part and an inner layer embedding part, and the overlapped parts of the outer layer embedding part and the inner side embedding part are provided with gear lines which are meshed with each other.

In the scheme, the gear line is in an arc shape which is narrowed inwards.

The further improvement of the proposal is that a handle is fixedly connected with the outer surface of the outer layer embedding part.

The control cable has the advantages that the center of the control cable is provided with the center isolation wire harness to isolate each wire core, and the isolation piece is arranged between the gaps between two adjacent wire cores to prevent the wire cores from being contacted with each other, ensure that no electrical interference is generated between the adjacent wire cores and ensure the stable work of the control cable; the control cable is convenient to maintain due to the existence of the opening and closing part, the outer-layer embedded part is pulled outwards by the opening and closing part, the protective layer of the control cable can be smoothly opened, and the protective layer does not need to be stripped by means of a cutter.

Drawings

FIG. 1 is a schematic of the present invention;

in the figure, 1, a wire core, 2, an insulating layer, 3, a protective layer, 4, a central isolation wire harness, 5, an isolation piece, 6, an outer layer embedding part, 7, an inner layer embedding part, 8, a gear wire, 9 and a handle.

Detailed Description

The technical scheme in the embodiment of the invention is clearly and completely described below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments based on the embodiments in the present invention, without any inventive work, will be apparent to those skilled in the art from the following description.

As shown in fig. 1, the cable comprises a plurality of cable cores 1, an insulating layer 2 and a protective layer 3 which are coated outside the cable cores, and a central isolation wire harness 4, wherein the cable cores surround and are tangent to the central isolation wire harness, a certain gap is reserved between the insulating layers of two adjacent cable cores, the central isolation wire harness is fixedly connected with an isolation piece 5 which passes through the gap, and the tail end of the isolation piece is fixedly connected with the inner surface of the protective layer.

Example 1: anti-interference type control cable, it includes 3 group sinle silks, cladding insulating layer and protective layer outside every group sinle silk, it still includes central isolation pencil, 3 group sinle silks are around keeping apart around the pencil at the center and tangent rather than, leave certain clearance between the insulating layer of two adjacent sinle silks, the pencil rigid coupling is kept apart at the center has the separator through this clearance, the terminal of separator and the internal surface rigid coupling of protective layer, this separator is wire rope, and wire rope is a straight line connection and keeps apart between the pencil at protective layer and center.

Example 2: the difference from example 1 is that the insulation is a fiber rope, which is connected in a straight line between the protective layer and the central insulation bundle.

Example 3: the difference with embodiment 1 lies in that this separator is aramid fiber rope, and this aramid fiber rope is in tangent with the insulating layer of a certain sinle silk between the clearance for aramid fiber rope is the arc.

Example 4: the difference from the embodiment 1 is that the isolating piece is a steel wire rope, and the steel wire rope is tangent to the insulating layer of one wire core between the gaps, so that the steel wire rope is arc-shaped.

Example 5: in order to facilitate the operation of the control cable, it is preferable that an opening and closing portion is provided on the radial outer surface of the protective layer, the opening and closing portion includes an outer layer engaging portion 6 and an inner layer engaging portion 7, a portion where the outer layer engaging portion and the inner side engaging portion overlap is provided with a gear line 8 that is preferably in an arc shape that narrows inward, and the gear line is more convenient, faster, and more labor-saving when the outer layer engaging portion is pulled outward, and is not easy to damage the gear, and of course, the gear line may be in a linear shape or other possible shapes.

Example 6: in example 5, a handle 9 is fixed to the outer surface of the outer-layer fitting portion in order to facilitate the removal of the outer-layer fitting portion.

The above embodiments can be arbitrarily combined according to the needs, and the obtained schemes do not conflict with each other and belong to the protection scope of the present invention.

Claims

1. The anti-interference control cable comprises a plurality of wire cores (1), insulating layers (2) and a protective layer (3) which are coated outside the wire cores, and is characterized by further comprising a central isolation wire harness (4), wherein the wire cores surround and are tangent to the central isolation wire harness, a certain gap is reserved between the insulating layers of two adjacent wire cores, the central isolation wire harness is fixedly connected with an isolation piece (5) which passes through the gap, and the tail end of the isolation piece is fixedly connected with the inner surface of the protective layer; the radial outer surface of the protective layer is provided with an opening and closing part, the opening and closing part comprises an outer layer embedding part (6) and an inner layer embedding part (7), and gear lines (8) meshed with each other are arranged at the overlapped part of the outer layer embedding part and the inner side embedding part.

2. The tamper resistant control cable of claim 1, wherein the spacer is tangent to the insulation of one of the cores between the gaps such that the spacer is arcuate.

3. The tamper resistant control cable of claim 2, wherein the spacer is a flexible member.

4. The tamper resistant control cable of claim 1, wherein said gear line is in the form of an inwardly narrowing arc.

5. The tamper resistant control cable according to claim 1 or 4, wherein a handle (9) is fixed to an outer surface of the outer layer fitting portion.