CN202422804U

CN202422804U - Flexible 6-kilovolt trailing cable for strip mine

Info

Publication number: CN202422804U
Application number: CN2012200080229U
Authority: CN
Inventors: 陈虎啸; 李礼会; 肖克俭; 杨臻
Original assignee: JIANGXI CABLE CO Ltd
Current assignee: JIANGXI CABLE CO Ltd
Priority date: 2012-01-10
Filing date: 2012-01-10
Publication date: 2012-09-05
Anticipated expiration: 2022-01-10

Abstract

A flexible 6-kilovolt trailing cable for a strip mine consists of three main insulation wire cores, a ground wire core, a monitoring wire, a control wire and insulating materials. The three main insulation wire cores are homocentric with the ground wire core, the monitoring wire and the control wire to form the cable. Each main insulation wire core comprises a conductor (1), a semiconducting tape (2), a conductor shield (3), an ethylene-propylene insulating layer (4), an insulating shield (5), a semiconducting tape lapping layer (6), a tinned-copper braided shield layer (7) and a cotton-yarn braided layer (8). Each conductor (1) is a bundled or twisted tinned copper filament, which is lapped with the semiconducting tape (2), an extruded layer formed by the conductor shield (3), the ethylene propylene insulating layer (4) and the insulating shield (5) in an extruded manner, the semiconducting tape lapping layer (6), the tinned-copper braided shield layer (7) and the cotton-yarn braided layer (8) from inside to outside. The flexible 6-kilovolt trailing cable for the strip mine integrates functions of power supply, safety protection, control, monitoring and the like, and is suitable for the strip mine.

Description

Flexible 6kV opencut is used trailing cable

Technical field

The utility model relates to a kind of flexible 6kV opencut and uses trailing cable, belongs to the electrical material technical field of electric wires and cables.

Background technology

The 6kV opencut is one of important auxiliary products of various opencuts with trailing cable, is mainly used in the mobile electric power system of the harsh outdoor mobile device of power shovel, excavator, excavator and rig and other environment of surface mine.Environment for use is very harsh, and to the wearing and tearing of cable, tear, roll and anti-flammability requires very highly, this product mainly relies on import, according to DIN production.At present domestic existing part producer can small lot batch manufacture, but its grade of rated voltage only limits to 3.6kV, still produces with reference to DIN DIN VDE 0250-813.

In north China abundant mineral resources being arranged, wherein much is that ore bed is very shallow or even be distributed in the open-air metallic ore and the colliery on the face of land.Opencast mining is to peel off covering ore body top and surface dust on every side and country rock thereof, transports to the refuse dump to barren rock, direct digging ore from the open ore body.The open-air mineral deposit developing is exactly each ore body in a series of open-air raceway grooves to opencut place is excavated on the face of land; Set up ground and produce step (in recovery process; The stepped working face that progressively forms) traffic links; Thereby form excavating plant to the transportation system between ore dressing plant or muck factory, refuse dump or the surface plant, adopt normally carrying out of work to guarantee stripping.Its exploitation characteristics are: directly receive the influence of natural environment (mode of occurence, landform, weather, lithology); Construction speed is fast, mining rate is high, be convenient to expand production; Main equipment easy to use, safety (no gas), efficient.These characteristics have determined open-air mining cable to have characteristics such as the cross section is big, electric pressure is high, cable feature is complete, performance requirement harshness.Past, homemade opencut cable was difficult to satisfy the new requirement of this kind.

Summary of the invention

The purpose of the utility model is according to the particular surroundings needs of open-air mining cable, to develop a kind of novel voltage levels, heavy in section, multifunctional open-air mining cable.

The technical scheme of the utility model is, the flexible 6kV opencut of the utility model with trailing cable by power main insulation core, core, pilot wire, control core and insulating material form; Three power main insulation cores and ground core, pilot wire, control line are with the core stranding; Semiconductive rubber 18 is filled at the center, and ground core, supervision core, control core just fall into the gap that forms between main line.

Said power main insulation core comprises conductor 1, semi-conductive tape 2, conductive shield 3, second third insulating barrier 4, insulation shielding 5, semi-conductive tape 6, tinned copper wire woven shield 7 and cotton braid 8; The tin-coated copper monofilament of conductor 1 for forming through bundle, strand; The wrapped from the inside to the outside semi-conductive tape 2 of conductor 1, by conductor screen 3, second third insulating barrier 4, insulation shielding 5 three-layer co-extruded form extrude layer, semi-conductive tape lapping layer 6, tinned copper wire woven shield 7 and cotton braid 8;

Said ground core is made up of gnd conductor 15 and semi-conductive tape 16, the tinned copper wire that gnd conductor 12 forms for the bundle strand; Gnd conductor 15 outer wrapped semi-conductive tapes 16;

Said supervision core is formed the tinned copper wire that pilot wire core conductor 12 forms for the bundle strand by pilot wire core conductor 12, second third insulation 13 and semi-conductive tape 14; Add bag semi-conductive tape 14 after extruding second third insulation 13 outside the pilot wire core conductor 12;

Said control core is formed the tinned copper wire that control line conductor 9 forms for the bundle strand by control line conductor 9, fluoroplastics 10 and second third insulation 11; Control line conductor 9 outer fluoroplastics 10 and second third insulation 11 double hyer insulations of extruding;

Said cable core extrudes haloflex mixture inner sheath 17, and braiding aramid fiber silk reinforced layer 19, extrudes haloflex mixture oversheath 20 again.

The main insulation core: core conductor 1 adopts the 5th type of tin-coated copper monofilament of national standard, forms through bundle, strand; Conductor 1 outer wrapped semi-conductive tape 2; Extrude the layer that extrudes by conductor screen 3, second third insulating barrier 4, insulation shielding 5 three-layer co-extruded moulding more outside, structure is an insulated wire cores; Behind the outer wrapped semi-conductive tape 6 of insulated wire cores, outside being wrapped in cotton yarn 8 and tinned copper wire 7 combined knittings again,, can satisfy the supply load of rated voltage 6kV and following equipment to satisfy the performance of high voltage rubber cable.

For improving the safety in operation of cable, be convenient to the Monitoring and Controlling of equipment simultaneously, the flexible 6kV opencut of the utility model except that three main insulation cores, also is provided with ground wire, pilot wire and control line with trailing cable within it; The core of ground wire, pilot wire and control line all adopts tin-coated copper tow strand to form; The gnd conductor 15 wrapped semi-conductive tapes 16 of ground core; The control line conductor 9 outer fluoroplastics 10 and second third insulation 11 double hyer insulations of extruding of control core; Add bag semi-conductive tape 14 after extruding second third insulation 13 outside the pilot wire core conductor 12 of pilot wire, satisfied the actual needs of mining machinery.

Cable core extrudes haloflex mixture inner sheath 17, braiding aramid fiber silk reinforced layer 19, extrudes haloflex mixture oversheath 20 again, strengthened the mechanical performance of cable, has strengthened the ability that cable is resisted outer damage.

The beneficial effect of the utility model and prior art comparison is; The flexible 6kV opencut of the utility model is reliable with trailing cable light in structure coincidence reason; Ground wire, pilot wire, control line are just fallen into the gap that forms between the main insulation line; The laying up diameter theoretical value that makes cable is the circumscribed gardens of three main lines after tangent in twos, the product external diameter is significantly reduced, and save a large amount of sheath materials; Reduced product cost, structure is more reliable and stable, uses more convenient; Multiple functional, cable integrates functions such as power supply, safeguard protection, control, supervision.Can satisfy the environment for use requirement of opencut, be high-quality auxiliary products large-scale, the high voltage mining machinery.

The utility model is suitable for open-air mining cable.

Description of drawings

Fig. 1 is the product structure sketch map of the utility model;

1～8 main insulation core structure among the figure, the 1st, conductor, the 2nd, semiconductive band, the 3rd, conductor screen, the 4th, second third insulating barrier, the 5th, insulation shielding, the 6th, semiconductive band lapping layer, the 7th, tinned copper wire braid shielded, the 8th, cotton braid; The 9th, the control line conductor; The 10th, fluoroplastic insulation; The 11st, second third insulation; The 12nd, the pilot wire core conductor; The 13rd, second third insulation; The 14th, the semiconductive band; The 15th, gnd conductor; The 16th, the semiconductive band; The 17th, inner restrictive coating; The 18th, the semiconductive rubber; The 19th, the braiding reinforced layer; The 20th, oversheath.

Embodiment

The embodiment of the utility model is example with MTJVNSWOU 3 * 240+1 * 120+1 * 95+1 * 25, and is as shown in Figure 1.

The conductor of present embodiment cable (main insulation core conductor 1, gnd conductor 15, control line conductor 9, pilot wire core conductor 12) is stranded the forming of tin-coated copper copper monofilament; Behind the main insulation line conductor 1 outsourcing semiconductive band 2, extrude conductor screen 3, second third insulation 4 and the insulation shielding 5 simultaneously, constitute insulated wire cores through three-layer co-extruded unit; Wrapped semi-conductive tape 6 on the insulated wire cores, tinned copper wire 7 and cotton yarn 8 combined knittings.

The gnd conductor 15 wrapped semi-conductive tapes 16 of ground core; The control line conductor 9 outer fluoroplastics 10 and second third insulation 11 double hyer insulations of extruding of control core; Add bag semi-conductive tape 14 after extruding second third insulation 13 outside the pilot wire core conductor 12 of pilot wire.

Three power insulated wire cores and the ground wire, control line, the pilot wire dextrad stranding that make are filled semiconductive rubber material 18 in the middle of the cable core; Operation is for extruding inner sheath 17, braiding aramid fiber reinforced layer 19, extruding oversheath 20 subsequently.Finished cable is that the referable user uses through exfactory inspection.This finished product external diameter reaches 101 ㎜, weighs: 18kg/m.

Claims

1. a flexible 6kV opencut is used trailing cable, it is characterized in that, said cable by power main insulation core, core, pilot wire, control line and insulating material form; Three main insulation cores and ground wire, pilot wire, control line are with the core stranding; Semiconductive rubber (18) is filled at the center, and ground core, supervision core, control core just fall into the gap that forms between main line;

Said power main insulation core comprises conductor (1), semi-conductive tape (2), conductive shield (3), second third insulating barrier (4), insulation shielding (5), semi-conductive tape (6), tinned copper wire woven shield (7) and cotton braid (8); The tin-coated copper monofilament of conductor (1) for forming through bundle, strand; The wrapped from the inside to the outside semi-conductive tape of conductor (1) (2), by conductor screen (3), second third insulating barrier (4), insulation shielding (5) three-layer co-extruded form extrude layer, semi-conductive tape (6), tinned copper wire woven shield (7) and cotton braid (8);

Said ground core is made up of gnd conductor (15) and semi-conductive tape (16), the tinned copper wire that gnd conductor (12) forms for the bundle strand; The outer wrapped semi-conductive tape (16) of gnd conductor (15);

Said supervision core is formed the tinned copper wire that pilot wire core conductor (12) forms for the bundle strand by pilot wire core conductor (12), second third insulation (13) and semi-conductive tape (14); Add bag semi-conductive tape (14) after extruding second third insulation (13) outside the pilot wire core conductor (12);

Said control core is formed the tinned copper wire that control line conductor (9) forms for the bundle strand by control line conductor (9), fluoroplastics (10) and second third insulation (11); Outer fluoroplastics (10) and second third insulation (11) double hyer insulation of extruding of control line conductor (9);

Said cable core extrudes haloflex mixture inner sheath (17), and braiding aramid fiber silk reinforced layer (19), extrudes haloflex mixture oversheath (20) again.