CN201345241Y

CN201345241Y - Highly flame-retardant and explosion proof control cable for coal mines

Info

Publication number: CN201345241Y
Application number: CNU2009201427174U
Authority: CN
Inventors: 张昌顺; 张琢琳; 张宝林
Original assignee: Anhui Changfeng Cable Group Co Ltd
Current assignee: Anhui Changfeng Cable Group Co Ltd
Priority date: 2009-01-14
Filing date: 2009-01-14
Publication date: 2009-11-11
Anticipated expiration: 2019-01-14

Abstract

The utility model relates to a highly flame-retardant and explosion proof control cable for coal mines, which is characterized in that a conductor has a structure stranded by one tinned copper wire or a plurality of tinned copper wires; an flame-retardant radiation cross linked polyolefin insulating layer is extruded and enwrapped on the conductor to form an insulated wire core; the cable is formed by stranding a plurality of insulated wire cores; flame-retardant glass fibers are filled in a filling layer to form a cable core; a belt enwrapping layer and a shielding layer formed by enwrapping a copper belt or an aluminum plastic belt are enwrapped outside the cable core in sequence; a plurality of leading wires made of tinned copper wires are arranged between the belt enwrapping layer and the shielding layer; and an outer sheath layer made of highly flame-retardant and static-free PVC is extruded and enwrapped on the outer surface of the shielding layer. The control cable has the advantages of high flame retardance, explosion protection, extruding prevention, and excellent electrical and mechanical properties.

Description

The explosion-proof colliery of high flame retardant control cable

Technical field

The utility model relates to a kind of electrical equipment control cable, relates in particular to the explosion-proof colliery of a kind of high flame retardant control cable, belongs to technical field of electric wires and cables.

Background technology

The colliery control cable not only needs certain electric property and mechanical performance, also needs fail safe.Because the environment particularity and the abominable in colliery improve the colliery and use the performance index and the fail safe of control cable particularly important.Most of in the market collieries are flame retardant type with control cable, but still unresolvedly produce gas explosion that electric spark causes or problem on fire owing to factors such as electromagnetic induction, dust gather cause static discharge.

The utility model content

The utility model is for avoiding above-mentioned existing in prior technology weak point, the explosion-proof colliery of a kind of high flame retardant control cable is provided, in the hope of having high flame retardant, explosion-proof, anti-extrusion, superior electrical performance and mechanical performance.

The utility model technical solution problem adopts following technical scheme:

The explosion-proof colliery of the utility model high flame retardant is that conductor is single or many tinned copper wire lay configuration with the design feature of control cable, extrudes fire-retardant cross-linking radiation polyolefin insulation layer and constitute insulated wire cores on conductor; By the stranded stranding of many eradications edge core, and interpolation flame-proof glass fibre silk is that packed layer constitutes cable conductor; Outside cable conductor, form wrapped belting layer successively and by copper strips or the wrapped screen that constitutes of plastic-aluminum band; Between belting layer and screen, many tinned copper wire drainage threads are set, extruding with high flame retardant, anti-static PVC in the appearance of screen is the external sheath layer of material.

Design feature of the present utility model is that also described belting layer is fire-retardant two-sided semi-conductive adhesive strap.

Compared with the prior art, the utility model beneficial effect is embodied in:

1, the utility model insulating barrier adopts fire-retardant cross-linking radiation polyolefine material to extrude superior electrical property, good flame retardation effect;

2, the utility model belting layer is fire-retardant two-sided semi-conductive adhesive strap, and adopts the wrapped screen of metal tape, can discharge induction static a large amount of on the insulated wire cores; The total shielding of cable conductor is that cable produces electromagnetic interference to surrounding environment or surrounding environment produces interference to cable in order to reduce.

3, the utility model adopts copper strips/plastic-aluminum band to hold structure, and is better than copper wire braid shielded effect.The cable metal screen does not cause cable outer surface belt static because of inside energising work; External sheath layer has higher anti-flammability, and can eliminate the performance of material surface static, and is more simple at the cable surface graphitization in the prior art, convenient.

No matter 4, the utility model is its electric property, or its mechanical and physical performance can both meet the requirement of relevant regulations, and the cable outer surface is not former thereby make the cable surface static electrification because of the inside and outside.Cable has not flame-retarding power energy of height, improves the fail safe of control cable.

Description of drawings

Fig. 1 is the explosion-proof control cable structure chart of the utility model four-core high flame retardant.

Fig. 2 is the explosion-proof control cable structure charts of the utility model seven core high flame retardants.

Number in the figure: 1 conductor, 2 exhausted cores, 3 packed layers, 4 belting layers, 5 drainage threads, 6 screens, 7 oversheaths.

Below in conjunction with drawings and Examples the utility model is further specified.

Embodiment

Referring to Fig. 1, Fig. 2, conductor 1 is single or many tinned copper wire lay configuration, extrudes fire-retardant cross-linking radiation polyolefin insulation layer and constitute insulated wire cores 2 on conductor 1; By many eradications edge core 2 stranded strandings, and interpolation flame-proof glass fibre silk is that packed layer 3 constitutes cable conductors; Outside cable conductor, form wrapped belting layer 4 successively and by copper strips or the wrapped screen that constitutes 6 of plastic-aluminum band; Between belting layer 4 and screen 6, many tinned copper wire drainage threads 5 are set, extruding with high flame retardant, anti-static PVC in the appearance of screen 6 is the external sheath layer 7 of material; Belting layer 4 is fire-retardant two-sided semi-conductive adhesive strap.

In concrete the enforcement, can be set to quad as shown in Figure 1, also can be set to the seven core cable by seven eradication edge cores, 2 stranded strandings shown in Figure 2 by four eradication edge cores, 2 stranded strandings.

Claims

1, the explosion-proof colliery of high flame retardant control cable is characterized in that conductor (1) is single or many tinned copper wire lay configuration, extrudes fire-retardant cross-linking radiation polyolefin insulation layer and constitute insulated wire cores (2) on conductor (1); By the stranded stranding of many eradications edge core (2), and interpolation flame-proof glass fibre silk is that packed layer (3) constitutes cable conductor; Outside described cable conductor, form wrapped belting layer (4) successively and by copper strips or the wrapped screen that constitutes of plastic-aluminum band (6); Between described belting layer (4) and screen (6), many tinned copper wire drainage threads (5) are set, extruding with high flame retardant, anti-static PVC in the appearance of described screen (6) is the external sheath layer (7) of material.

2, the explosion-proof colliery of high flame retardant according to claim 1 control cable is characterized in that described belting layer (4) is fire-retardant two-sided semi-conductive adhesive strap.