CN103871675A - Polyvinyl chloride (PVC) insulation PVC sheathed control cable - Google Patents

Abstract

The invention discloses a polyvinyl chloride (PVC) insulation PVC sheathed control cable, which comprises first control conductors and second control conductors, wherein the cross section of each first control conductor is oval; the cross section of each second control conductor is round; the two second control conductors are arranged between the two first control conductors; the two first control conductors and the two second control conductors are arranged into a rhombus; a strengthened fiber rope is arranged between any adjacent first control conductor and second control conductor; the strengthened fiber rope is abutted against the corresponding first control conductor and second control conductor; a fire-resistant mica tape belting layer, a steel wire armoured shielding layer and a PVC sheathed layer are sequentially wrapped on the first control conductors and the second control conductors. The control cable is applicable to a broader alternating voltage circuit, different current-carrying capacities are satisfied, so that the insulation reliability of the control cable is greatly improved, and the service life of the control cable is prolonged.

Description

A kind of polyvinyl chloride-insulated polyvinyl chloride control cables

Technical field

The present invention relates to technical field of electric wires and cables, relate in particular to a kind of polyvinyl chloride-insulated polyvinyl chloride control cables.

Background technology

Along with the growth continuously and healthily of China's economy, for the development of cable industry provides huge market prospects.Be accompanied by the continuous expansion of the industry sizes such as electric power, communication, track traffic, automobile and shipbuilding, the demand of electric wire is also being increased rapidly, can predict electric wire industry from now on and also have huge development potentiality.

Control cables on market is various, and they are applied in various different occasions.In the time that fire occurs, common fireproof control cable cannot guarantee that circuit works on.In addition, the copper core copper sheath magnesium oxide insulating cable on market is due to employing drawing process with using magnesium oxide as cable insulation, and cable core radical is restricted, and its insulating reliability is also very poor.Shield effectiveness is undesirable in addition, and oversheath easily damages, and will exert an influence to whole cable operation so in actual use.

At present, all trades and professions are more and more higher to the requirement of cable, in use, not only will avoid that cable is mechanically damaged, insulation harm, ageing of insulation are rotten etc., also will under hot conditions, use, high temperature resistant.The current capacity of cable is conventionally relevant with the sectional area of conductor thread core simultaneously, in the time that increasing, electric current can make conductor temperature raise, the temperature of the insulating barrier of conductor outer cladding exceedes the change that can cause in insulating barrier generation performance in limited time, thereby the insulating reliability of insulating barrier is reduced greatly, affect the useful life of cable.

Summary of the invention

In order to solve the technical problem existing in background technology, the present invention proposes a kind of polyvinyl chloride-insulated polyvinyl chloride control cables, meet different current capacities, thereby the insulating reliability of control cables is improved greatly, extended the useful life of control cables.

A kind of polyvinyl chloride-insulated polyvinyl chloride control cables that the present invention proposes, comprise the first control conductor and the second control conductor, the first cross section of controlling conductor is oval, the second cross section of controlling conductor is circular, controlling conductor for two second is arranged between two first control conductors, and control conductor for two first, control the conductors layout that assumes diamond in shape for two second, two first control conductors are positioned at the two-end-point of rhombus minor axis, two second control conductors are positioned at the two-end-point of rhombus major axis, control between conductor and the second control conductor and be provided with reinforcing fibre rope at first of arbitrary neighborhood, reinforcing fibre rope is controlled conductor with the first control conductor and second respectively and is leant, at the first control conductor, second controls conductor is coated fire-resistant isinglass belt lapping layer outward successively, wire armoring screen and pvc sheath layer formation control cable, the cross section of control cables is oval, at the first control conductor, second controls conductor, in space between reinforcing fibre rope and fire-resistant isinglass belt lapping layer, fill fire proofing.

Preferably, first control conductor and mutually circumscribed first control insulated wire and the fire-resistant packing material that is coated on the polyvinyl chloride insulation layer outside the first control insulated wire and is filled in space between the first control insulated wire and polyvinyl chloride insulation layer forms successively by three.

Preferably, being centered close on same straight line of three first control insulated wires.

Preferably, first control insulated wire and formed by the first pilot and the belting layer, the proof copper-wire braided screen that are coated on successively outside the first pilot.

Preferably, the second control conductor is made up of with the polyvinyl chloride insulation layer being coated on outside the second control insulated wire seven the second circumscribed control insulated wires of two two-phases.

Preferably, second control insulated wire and formed by the second pilot and the belting layer, the soft copper band lapped shielding layer that are coated on successively outside the second pilot.

Preferably, reinforcing fibre rope surface is provided with adhesive-layer, and the first control conductor and second causing while preventing control cables distortion is controlled the dislocation of conductor.

Preferably, the cross section of reinforcing fibre rope is oval, and oval-shaped minor axis two-end-point is controlled conductor with the first control conductor and second respectively and leant.

Preferably, first controls conductor, second controls the polyvinyl chloride insulation material that the polyvinyl chloride insulation layer on conductor adopts, comprise following weight portion raw material: Corvic: 50～60 parts, polymethyl methacrylate: 5～10 parts, this ethene of acrylonitrile butadiene: 3～5 parts, polytetrafluoroethylene: 1～3 part, trimethyl silane imidazoles: 3～5 parts, dioctyl phthalate: 2～3 parts, heat stabilizer: 6～10 parts, organic accelerator: 1～2 part, inorganic filler: 0.5～0.8 part.Above-mentioned polyvinyl chloride insulation material prepares by screw extruder, and extrusion temperature is controlled at 190～200 ℃.There is at normal temperatures higher resistivity, good tensile strength and elongation at break.

Preferably, the pvc sheathing compound that pvc sheath layer adopts, comprises following weight portion raw material: Corvic: 70～78 parts, polyurethane: 26～30 parts, PTMG: 11～14 parts, poly-adipic acid-BDO esterdiol: 16～20 parts, trimethyl silane imidazoles: 6～10 parts, 2,3-epoxypropyl phenylether: 6～8 parts, heat stabilizer: 3～5 parts, organic accelerator: 2～3 parts, inorganic filler: 0.5～1.5 part.Above-mentioned pvc sheathing compound prepares by screw extruder, and extrusion temperature is controlled at 170～185 ℃.There is higher resistivity, good better tensile strength and elongation at break compared with polyvinyl chloride insulation material at normal temperatures.

It is the occasion such as 450～750V and following control, monitoring loop and protection circuit that the present invention is applicable to specified alternating voltage, and the long-term working temperature allowing is 70 ℃; The present invention adopts two different the first control conductors and second in cross section to control conductor, is applicable to wider alternating voltage circuit, meets different current capacities, thereby the insulating reliability of control cables is improved greatly, has extended the useful life of control cables; The first control conductor and second is controlled conductor and is pressed rhombus layout, and control between conductor reinforcing fibre rope is set at the first control conductor and second, not only guarantee the hot strength of control cables, and any three control conductors are triangularly arranged, make control cables have good warp resistance and resistance to extruding, the adhesive-layer on reinforcing fibre rope prevents the distortion of control cables and causes the dislocation of controlling between conductor simultaneously; Control on conductor and be equipped with screen, prevent from controlling the interference between conductor.

Accompanying drawing explanation

Fig. 1 is the cross section structure schematic diagram of a kind of polyvinyl chloride-insulated polyvinyl chloride control cables of proposing of the present invention.

Embodiment

As shown in Figure 1, Fig. 1 is the cross section structure schematic diagram of a kind of polyvinyl chloride-insulated polyvinyl chloride control cables of proposing of the present invention.

With reference to Fig. 1, a kind of polyvinyl chloride-insulated polyvinyl chloride control cables that the present invention proposes, comprise thefirst control conductor 1 and thesecond control conductor 2, the first cross section of controllingconductor 1 is oval, the second cross section of controllingconductor 2 is circular, controllingconductor 2 for two second is arranged between twofirst control conductors 1, andfirst controls conductor 1,second controls conductor 2 layout that assumes diamond in shape, twofirst control conductors 1 are positioned at the two-end-point of rhombus minor axis, twosecond control conductors 2 are positioned at the two-end-point of rhombus major axis, control betweenconductor 1 and thesecond control conductor 2 and be provided with reinforcingfibre rope 3 at first of arbitrary neighborhood, the cross section of reinforcingfibre rope 3 is oval, oval-shaped minor axis two-end-point is controlledconductor 2 with thefirst control conductor 1 and second respectively and is leant, at thefirst control conductor 1, second controls the outer coated fire-resistant isinglassbelt lapping layer 4 successively ofconductor 2,wire armoring screen 5 andpvc sheath layer 6 formation control cable, the cross section of control cables is oval, at thefirst control conductor 1,second controls conductor 2, in space between reinforcingfibre rope 3 and fire-resistant isinglassbelt lapping layer 4, fill fire proofing 7.Wherein, reinforcingfibre rope 3 surfaces are provided with adhesive-layer 8, and thefirst control conductor 1 and second causing while preventing control cables distortion is controlled the dislocation ofconductor 2.

In the present invention,first controls conductor 1 mutually circumscribed first controls insulatedwire 11 and the fire-resistant packing material 13 that is coated on the polyvinylchloride insulation layer 12 outside the first control insulatedwire 11 and is filled in space between the first control insulatedwire 11 and polyvinylchloride insulation layer 12 forms successively by three, controls being centered close on same straight line ofinsulated wires 11 for three first.First controls insulatedwire 11 is made up of thefirst pilot 111 and thebelting layer 112, the proof copper-wire braidedscreen 113 that are coated on successively outside thefirst pilot 111.

In the present invention,second controls conductor 2 is made up of with the polyvinylchloride insulation layer 22 being coated on outside the second control insulatedwire 21 seven the second circumscribed control insulatedwires 21 of two two-phases.Second controls insulatedwire 21 is made up of thesecond pilot 211 and thebelting layer 212, the soft copper band lappedshielding layer 213 that are coated on successively outside thesecond pilot 211.

Wherein, first controls the polyvinyl chloride insulation material that the polyvinyl chloride insulation layer onconductor 1, thesecond control conductor 2 adopts, comprise following weight portion raw material: Corvic: 50～60 parts, polymethyl methacrylate: 5～10 parts, this ethene of acrylonitrile butadiene: 3～5 parts, polytetrafluoroethylene: 1～3 part, trimethyl silane imidazoles: 3～5 parts, dioctyl phthalate: 2～3 parts, heat stabilizer: 6～10 parts, organic accelerator: 1～2 part, inorganic filler: 0.5～0.8 part.Above-mentioned polyvinyl chloride insulation material prepares by screw extruder, and extrusion temperature is controlled at 190～200 ℃.There is at normal temperatures higher resistivity, good tensile strength and elongation at break.

In specific embodiment, first controls the polyvinyl chloride insulation material that the polyvinyl chloride insulation layer onconductor 1, thesecond control conductor 2 adopts, comprise following weight portion raw material: Corvic: 55 parts, polymethyl methacrylate: 8 parts, this ethene of acrylonitrile butadiene: 4 parts, polytetrafluoroethylene: 2 parts, trimethyl silane imidazoles: 4 parts, dioctyl phthalate: 2.5 parts, heat stabilizer: 8 parts, organic accelerator: 1.5 parts, inorganic filler: 0.6 part.

Wherein, the pvc sheathing compound thatpvc sheath layer 6 adopts, comprises following weight portion raw material: Corvic: 70～78 parts, polyurethane: 26～30 parts, PTMG: 11～14 parts, poly-adipic acid-BDO esterdiol: 16～20 parts, trimethyl silane imidazoles: 6～10 parts, 2,3-epoxypropyl phenylether: 6～8 parts, heat stabilizer: 3～5 parts, organic accelerator: 2～3 parts, inorganic filler: 0.5～1.5 part.Above-mentioned pvc sheathing compound prepares by screw extruder, and extrusion temperature is controlled at 170～185 ℃.There is higher resistivity, good better tensile strength and elongation at break compared with polyvinyl chloride insulation material at normal temperatures.

In specific embodiment, the pvc sheathing compound thatpvc sheath layer 6 adopts, comprises following weight portion raw material: Corvic: 75 parts, polyurethane: 28 parts, PTMG: 12 parts, poly-adipic acid-BDO esterdiol: 18 parts, trimethyl silane imidazoles: 9 parts, 2,3-epoxypropyl phenylether: 7 parts, heat stabilizer: 4 parts, organic accelerator: 2.5 parts, inorganic filler: 1.2 parts.

It is the occasion such as 450～750V and following control, monitoring loop and protection circuit that the present invention is applicable to specified alternating voltage, and the long-term working temperature allowing is 70 ℃; The present invention adopts two different thefirst control conductors 1 and second in cross section tocontrol conductor 2, is applicable to wider alternating voltage circuit, meets different current capacities, thereby the insulating reliability of control cables is improved greatly, has extended the useful life of control cables; Thefirst control conductor 1 and second is controlledconductor 2 and is pressed rhombus layout, and control betweenconductor 2 reinforcingfibre rope 3 is set at thefirst control conductor 1 and second, not only guarantee the hot strength of control cables, and any three control conductors are triangularly arranged, make control cables have good warp resistance and resistance to extruding, the adhesive-layer 8 on reinforcingfibre rope 3 prevents the distortion of control cables and causes the dislocation of controlling between conductor simultaneously; Control on conductor and be equipped with screen, prevent from controlling the interference between conductor.

The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.

Claims (8)

1. a polyvinyl chloride-insulated polyvinyl chloride control cables, it is characterized in that, comprise that two first are controlled conductor (1) and two second control conductors (2), the first cross section of controlling conductor (1) is oval, the second cross section of controlling conductor (2) is circular, controlling conductor (2) for two second is arranged between two first control conductors (1), and control conductor (1) for two first, control conductors (2) layout that assumes diamond in shape for two second, two first control conductors (1) are positioned at the two-end-point of rhombus minor axis, two second control conductors (2) are positioned at the two-end-point of rhombus major axis, control between conductor (1) and the second control conductor (2) and be provided with reinforcing fibre rope (3) at first of arbitrary neighborhood, reinforcing fibre rope (3) is controlled conductor (2) with the first control conductor (1) and second respectively and is leant, at the first control conductor (1), second controls the outer coated fire-resistant isinglass belt lapping layer (4) successively of conductor (2), wire armoring screen (5) and pvc sheath layer (6) formation control cable, the cross section of control cables is oval, at the first control conductor (1), second controls conductor (2), in space between reinforcing fibre rope (3) and fire-resistant isinglass belt lapping layer (4), fill fire proofing (7).

2. polyvinyl chloride-insulated polyvinyl chloride control cables according to claim 1, is characterized in that; First controls conductor (1) mutually circumscribed first controls insulated wire (11), is coated on the outer polyvinyl chloride insulation layer (12) of the first control insulated wire (11) and is filled in fire-resistant packing material (13) formation in space between the first control insulated wire (11) and polyvinyl chloride insulation layer (12) successively by three.

3. polyvinyl chloride-insulated polyvinyl chloride control cables according to claim 2, is characterized in that; Being centered close on same straight line of three first controls insulated wire (11).

4. polyvinyl chloride-insulated polyvinyl chloride control cables according to claim 2, is characterized in that; First controls insulated wire (11) by the first pilot (111) and is coated on successively the outer belting layer (112) of the first pilot (111), proof copper-wire braided screen (113) formation.

5. polyvinyl chloride-insulated polyvinyl chloride control cables according to claim 1, is characterized in that; Second controls conductor (2) by circumscribed second the controlling insulated wire (21) and be coated on outer polyvinyl chloride insulation layer (22) formation of the second control insulated wire (21) of seven two two-phases.

6. polyvinyl chloride-insulated polyvinyl chloride control cables according to claim 5, is characterized in that; Second controls insulated wire (21) by the second pilot (211) and is coated on successively the outer belting layer (212) of the second pilot (211), soft copper band lapped shielding layer (213) formation.

7. polyvinyl chloride-insulated polyvinyl chloride control cables according to claim 1, is characterized in that; Reinforcing fibre rope (3) surface is provided with adhesive-layer (8).

8. according to the polyvinyl chloride-insulated polyvinyl chloride control cables described in claim 1 or 7, it is characterized in that; The cross section of reinforcing fibre rope (3) is oval.

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