CN102800389B

CN102800389B - Medium-voltage anti-interference soft cable of coal cutter for coal mine

Info

Publication number: CN102800389B
Application number: CN201210296477.XA
Authority: CN
Inventors: 虞文品; 陈小洋; 郑雷; 张超超; 吴礼兴
Original assignee: XINGLE CABLE CO Ltd
Current assignee: XINGLE CABLE CO Ltd
Priority date: 2012-08-16
Filing date: 2012-08-16
Publication date: 2014-09-17
Anticipated expiration: 2032-08-16
Also published as: CN102800389A

Abstract

The invention discloses a medium-voltage anti-interference soft cable of a coal cutter for a coal mine. The medium-voltage anti-interference soft cable comprises a power wire core conductor, a control wire core conductor and a monitoring wire core conductor, wherein the power wire core conductor is externally wrapped with a semi-conductive nylon strap and then externally extruded with a shielding layer, an ethylene-propylene insulation layer and an insulation shielding layer in a co-extrusion manner; the control wire core conductor is externally extruded with an ethylene-propylene insulation layer; the high-strength ethylene-propylene insulation layer is externally knitted with a copper-wire shielding layer; a plurality of knitted control wire cores form a cable, the cabling pitch is not more than 8 times, and fillings are filled among the control wire cores; each wire core is externally wrapped with a polyester film strap, a knitted copper wire/aramid fiber knitted layer and an inner extrusion sheath in sequence; power wire cores and the control wire cores are cabled and stranded, the stranding pitch is not more than 12 times, semi-conductive filling strips are filled in gaps of the power wire cores and the control wire cores, and a polyester film layer, a knitted main copper-wire shielding layer and an inner extruded cable sheath wraps the cores in sequence; the inner sheath is externally wrapped with double-layer double-face semi-conductive cotton tapes and then extruded with an outer cable sheath; and monitoring wire cores are wound among the double-layer double-face semi-conductive cotton tapes at an equal distance and in a sparse manner.

Description

The anti-interference colliery of middle pressure soft cable of coal mining machine

Technical field

The present invention relates to a kind of cable, mainly refer to the anti-interference colliery of middle pressure soft cable of coal mining machine.

Background technology

Along with the requirement to antiknock device under the development of frequency converter heat dissipation technology and coal mine, frequency converter uses more and more frequent under mine in recent years.Frequency converter is at work because rectification and frequency conversion produce many interference electromagnetic waves, these frequency electromagnetic waves all have certain interference near instrument and meter, but also the normal operation that can produce high order harmonic component and enter whole supply network and disturb other equipment by current supply circuit.Conventional soft cable of coal mining machine is affected by frequency conversion conduction and radiated interference often, causes control, surveillance operation irregularity, affects coal-winning machine and normally moves.Patent of the present invention promotes the antijamming capability of electric cable for coal mining machine from structural design.

Summary of the invention

The object of the invention is to provide a kind of middle pressure electric cable for coal mining machine of interference free performance excellence, and it good anti-ly circumnutates except having, flexible, high strength, also have good interference free performance.

For achieving the above object, the solution that the invention is taked is: in one, press anti-interference colliery soft cable of coal mining machine, it comprises power line core conductor, control line core conductor and pilot wire core conductor, power line core conductor, control line core conductor and pilot wire core conductor all adopt multiply bundle stranded wire to twist again the soft structure conductor forming, and bundle strand, twist pitch again and are not more than 12 times, after the outer wrapped semiconductive nylon tape of power line core conductor, adopt three-layer co-extruded mode to extrude power line core conductor screen, power core second the third insulating barrier and power line core insulation screen, form power core, control line core conductor extrudes high strength second third insulating barrier of tensile strength >=11.0MPa, elongation at break >=300% outward, and high strength second the third insulating barrier weaves shielding layer of copper wires outward, formation control core, core stranding is controlled in multiply braiding, and laying up pitch is not more than 8 times, and is controlling interpolation control core inserts between core, formation control core stranding cable core, control the mylar tape of the outer wrapped one deck high tenacity of core stranding cable core, strong slippage, mylar tape weaves copper wire/aramid fiber yarn braid outward again as controlling cable core braided overall-shielding layer, copper wire/aramid fiber yarn braid extrudes high-intensity control line in-core sheath, the total cable core of formation control core stranding outward again, multiply braiding pilot wire core conductor becomes to monitor core, power core is stranded with the total cable core of control core stranding, twisting pitch is not more than 12 times, power core and the total cable core gap-fill of control core stranding semiconductive packing, and wrapped high tenacity, the laminated polyester film of strong slippage, laminated polyester film weaves the total screen of copper wire outward, the total screen of copper wire extrudes inner sheath outward, the outer two-sided semiconductive cotton tape of wrapped internal layer of inner sheath and outer two-sided semiconductive cotton tape, equidistant dredging around monitoring core between the two-sided semiconductive cotton tape of internal layer and outer two-sided semiconductive cotton tape, the outer packaged cable oversheath of outer two-sided semiconductive cotton tape.

Power line core conductor, control line core conductor and pilot wire core conductor all adopt multiply bundle stranded wire to twist again the soft structure conductor forming, and bundle strand, twist pitch again and are not more than 12 times, guarantee conductor softness.Core stranding is controlled in multiply braiding, and laying up pitch is not more than 8 times, and controlling interpolation control core inserts between core, guarantees to control core balancing tension, cable core outward appearance rounding.The anti-interference colliery of middle pressure, good anti-ly circumnutates except having owing to taking a series of innovation structures with soft cable of coal mining machine, flexible, high strength, also have good interference free performance.

Brief description of the drawings

Fig. 1 is the structural representation of the present embodiment.

In figure: 1, power line core conductor, 2, semiconductive nylon tape, 3, power line core conductor screen, 4, power core second the third insulating barrier, 5, power line core insulation screen, 6, semiconductive packing, 7, control line core conductor, 8, high strength second the third insulating barrier, 9, shielding layer of copper wires, 10, control core inserts, 11, mylar tape, 12, copper wire/aramid fiber yarn braid, 13, control line in-core sheath, 14, laminated polyester film, 15, the total screen of proof copper-wire braided, 16, inner sheath, 17, the two-sided semiconductive cotton tape of internal layer, 18, pilot wire core conductor, 19, outer two-sided semiconductive cotton tape, 20, cable jacket.

Below in conjunction with embodiment and accompanying drawing thereof, the present invention is remake to description.

Referring to Fig. 1, in one, press anti-interference colliery soft cable of coal mining machine, it comprises power line core conductor 1, control line core conductor 7 and pilot wire core conductor 18, power line core conductor 1, control line core conductor 7 and pilot wire core conductor 18 all adopt multiply bundle stranded wire to twist again the soft structure conductor forming, and bundle strand, twist pitch again and are not more than 12 times, the three-layer co-extruded mode of the power line core conductor 1 rear employing of outer wrapped semiconductive nylon tape 2 extrudes power line core conductor screen 3, power core second the third insulating barrier 4 and power line core insulation screen 5, forms power core, outer high strength second the third insulating barrier 8 that extrudes tensile strength >=11.0MPa, elongation at break >=300% of control line core conductor 7, the outer braiding shielding layer of copper wires 9 of high strength second the third insulating barrier 8, formation control core, core stranding is controlled in multiply braiding, and laying up pitch is not more than 8 times, and is controlling interpolation control core inserts 10 between core, formation control core stranding cable core, control the mylar tape 11 of the outer wrapped one deck high tenacity of core stranding cable core, strong slippage, outer copper wire/aramid fiber yarn the braid 12 that weaves again of mylar tape 11 is as controlling cable core braided overall-shielding layer, outer high-intensity control line in-core sheath 13, the total cable core of formation control core stranding of extruding again of copper wire/aramid fiber yarn braid 12, 18 one-tenth supervision cores of multiply braiding pilot wire core conductor, power core is stranded with the total cable core of control core stranding, twisting pitch is not more than 12 times, power core and the total cable core gap-fill of control core stranding semiconductive packing 6, and wrapped high tenacity, the laminated polyester film 14 of strong slippage, the total screen 15 of the outer braiding copper wire of laminated polyester film 14, the outer inner sheath 16 that extrudes of the total screen 15 of copper wire, the two-sided semiconductive cotton tape 17 of the outer wrapped internal layer of inner sheath 16 and outer two-sided semiconductive cotton tape 19, equidistant dredging around monitoring core between the two-sided semiconductive cotton tape 17 of internal layer and outer two-sided semiconductive cotton tape 19, the outer packaged cable oversheath 20 of outer two-sided semiconductive cotton tape 19.

Referring to Fig. 1, the described total conductor assembly outer diameter of control core stranding and power core external diameter are basically identical.

Referring to Fig. 1, described power core is three strands.

Referring to Fig. 1, described control core is four strands.

Referring to Fig. 1, described cable jacket 20 materials are high-strength polyurethane or high-intensity neoprene or similar material.

Claims

1. press anti-interference colliery soft cable of coal mining machine in one kind, it comprises power line core conductor (1), control line core conductor (7) and pilot wire core conductor (18), it is characterized in that: power line core conductor (1), control line core conductor (7) and pilot wire core conductor (18) all adopt multiply bundle stranded wire to twist again the soft structure conductor forming, bundle strand, twist pitch again and be not more than 12 times, after the outer wrapped semiconductive nylon tape (2) of power line core conductor (1), adopt three-layer co-extruded mode to extrude power line core conductor screen (3), power core second the third insulating barrier (4) and power line core insulation screen (5), form power core, outer high strength second the third insulating barrier (8) that extrudes tensile strength >=11.0MPa, elongation at break >=300% of control line core conductor (7), high strength second the third insulating barrier (8) outer braiding shielding layer of copper wires (9), formation control core, core stranding is controlled in multiply braiding, and laying up pitch is not more than 8 times, and is controlling interpolation control core inserts (10) between core, formation control core stranding cable core, control the mylar tape (11) of the outer wrapped one deck high tenacity of core stranding cable core, strong slippage, outer copper wire/aramid fiber yarn the braid (12) that weaves again of mylar tape (11) is as controlling cable core braided overall-shielding layer, the outer high-intensity control line in-core sheath (13), the total cable core of formation control core stranding of extruding again of copper wire/aramid fiber yarn braid (12), multiply braiding pilot wire core conductor (18) becomes to monitor core, power core is stranded with the total cable core of control core stranding, twisting pitch is not more than 12 times, power core and control core stranding total cable core gap-fill semiconductive packing (6), and wrapped high tenacity, the laminated polyester film (14) of strong slippage, laminated polyester film (14) the outer braiding total screen of copper wire (15), the outer inner sheath (16) that extrudes of the total screen of copper wire (15), the outer two-sided semiconductive cotton tape of wrapped internal layer (17) of inner sheath (16) and outer two-sided semiconductive cotton tape (19), equidistant dredging around monitoring core between the two-sided semiconductive cotton tape of internal layer (17) and outer two-sided semiconductive cotton tape (19), outer two-sided semiconductive cotton tape (19) outer packaged cable oversheaths (20).

2. the anti-interference colliery of middle pressure according to claim 1 soft cable of coal mining machine, is characterized in that: the described total conductor assembly outer diameter of control core stranding and power core external diameter are basically identical.