CN205621470U - Block water colliery with removing metallic shield supervision type rubber cover flexible cable - Google Patents

Abstract

The utility model discloses a block water colliery with removing metallic shield supervision type rubber cover flexible cable, it comprises power core, the packing that blocks water, inner sheath layer, semi -conductive band wrapping layer, insulating bag layer, oversheath layer and monitoring core. Power core is provided with three groups, even crowded the package inside the packing that blocks water, power core comprises conductor, conductor shield, power core insulating layer, insulation screen and lurex woven shield, monitoring core is provided with three, and even crowded package is inside semi -conductive band wrapping layer. This kind of cable is fire -retardant, resistant oily, high temperature resistant, wear -resisting, waterproof.

Description

One blocks water moving metal shield monitor type rubber sleeve soft cable for coal mine

Technical field

This utility model belongs to field of cables, particularly relates to one and blocks water moving metal shield monitor type rubber sleeve soft cable for coal mine.

Background technology

Coal is one of China's important energy source, along with China's economic construction development power requirement strengthens day by day, coal consumption is the most increasing, coal is present in a kind of fossil energy of nature, in the very big especially Anhui of China of China's reserves, Xinjiang, Inner Mongol, Shanxi, Shaanxi coal resources the abundantest.

Nature is a kind of mineral resources, is imbedded in the deepest underground.The pre-peaceful liberation period we use man-made recovery and people's labour movement coal and now China's coal mining industry be used for large automatic coal excavation apparatus and exploit, the various cable of job demand of these equipment, wherein down-hole transformer station needs substantial amounts of removal cable between each power distribution cabinet, these cables are in use often subject to the biggest longitudinal pulling force of serious dilatory formation and are easily caused the fracture cable short circuit of cable conductor, if the coal cinder that cable is fallen and stone smash or cable is met water and will be short-circuited in down-hole, if running into gas to produce blast and cause fire, cable gives out smog when burning and toxic gas makes people's death by suffocation.

Thus require that on the one hand down-hole should possess the bending to cable, dilatory and the coal cinder that falls and the impact of stone and the defencive function of water, under conditions of down-hole is this badly, this is clearly difficult to accomplish, on the other hand it has to be considered that cable itself should have certain flexibility, counter-bending, shock resistance, block water and the function of low smoke and zero halogen, cable bend certain radius the most at a certain temperature, soaking of continuous thousand of time the most up to ten thousand times or the coal cinder that fallen and the impact of stone and water, cable is maintained to properly functioning, there is not open circuit in cable conductor, short circuit, insulation and sheath material do not ftracture, toxic gas is not produced during cable fire, if cable insulation sustains damage, whole equipment can power-off immediately.The most also do not have a kind of have the flexibility of excellence, bending resistance, impact resistance, block water, cable fire time do not produce toxic gas and insulation sustain damage whole equipment can the private cable of power-off immediately.

Utility model content

This patent is for avoiding the weak point existing for above-mentioned prior art, there is provided a kind of softness good, cable conductor core not easy fracture, impact resistance, block-water performance are good, do not produce during cable fire that toxic gas not only has high intensity, fire-retardant, oil resistant, the characteristic such as high temperature resistant, wear-resisting, soft is to adapt to different working environments, and possess the private cable of the bending property of excellence.

This utility model takes techniques below scheme to realize: one blocks water moving metal shield monitor type rubber sleeve soft cable for coal mine, it is by power wire core, block water packing, inner restrictive coating, semi-conductive tape covering, insulation bag layer, external sheath layer and supervision core composition, described power wire core is provided with three groups, uniformly it is extruded in inside the packing that blocks water, one layer of inner restrictive coating of the outer wrapping of the described packing that blocks water, one layer of semi-conductive tape covering of the outer wrapping of described inner restrictive coating, the outer wrapping of described semi-conductive tape covering one layer insulation bag layer, one layer of external sheath layer of outer wrapping of described insulation bag layer, described power wire core is by conductor, conductor shield, power wire core insulating barrier, insulation screen and weaving metallic fibers screen layer composition, described supervision core is provided with three, uniformly it is extruded in inside semi-conductive tape covering.

Cable inner restrictive coating is the low smoke and zero halogen rubber with ethylene-propylene diene copolymer as base material, and cable jacket layer is that the low smoke and zero halogen rubber using ethylene-propylene diene copolymer as base material is as oversheath.

During this utility model has the advantages that this utility model in sum, conductor is annealed copper wire, uses stock strand and twists structure in the same direction again, it is ensured that the good bending property of cable；Block-water performance is good；In this utility model jacket material use ethylene-propylene diene copolymer be the low smoke and zero halogen rubber of base material as oversheath, substantially increase cable in underground moving service life, cable can move freely with underground equipment；This utility model is mainly used in the connection of underground coal mine phase shifting transformer and similar devices, and cable can move freely with equipment, and the electric conductivity of cable is greatly improved.

Accompanying drawing explanation

Fig. 1 is this utility model cross-sectional structure schematic diagram.

Detailed description of the invention

nullAs shown in Figure 1，One blocks water moving metal shield monitor type rubber sleeve soft cable for coal mine，It is by power wire core 1、Block water packing 2、Inner restrictive coating 3、Semi-conductive tape covering 4、Insulation bag layer 5、External sheath layer 6 and supervision core 7 form，Described power wire core 1 is provided with three groups，Uniformly it is extruded in the packing 2 that blocks water internal，One layer of inner restrictive coating 3 of outer wrapping of the described packing 2 that blocks water，One layer of semi-conductive tape covering 4 of the outer wrapping of described inner restrictive coating 3，The outer wrapping of described semi-conductive tape covering 4 one layer insulation bag layer 5，One layer of external sheath layer 6 of outer wrapping of described insulation bag layer 5，Described power wire core 1 is by conductor 11、Conductor shield 12、Power wire core insulating barrier 13、Insulation screen 14 and weaving metallic fibers screen layer 15 form，Described supervision core 7 is provided with three，Uniformly it is extruded in semi-conductive tape covering 4 internal.

Being embodied as: cable inner restrictive coating 3 is the low smoke and zero halogen rubber with ethylene-propylene diene copolymer as base material, cable jacket 6 is that the low smoke and zero halogen rubber using ethylene-propylene diene copolymer as base material is as oversheath.

Power wire core 1 uses the low smoke and zero halogen rubber with ethylene-propylene diene copolymer as base material, and power wire core insulation screen 13 uses three-layer co-extruded mode to extrude to carry out weaving metallic fibers again.

Further, for ensureing that optoelectronic composite cable has preferable flexibility, conductor 11 uses five class formations, conductor 11 strands strand lay ratio controls below 12 times, the lay ratio of multiple strand controls below 10 times, and the concentric type identical with strand direction again for stock strand is regular stranded, outer layer direction of lay is left-hand, in this kind of stranded mode, the position of each strand is the most in turn in elongation zone and the compressional zone of twisted wire bottom on twisted wire top, when twisted wire bends, conductor will not deform fracture, make its flexibility and ductility more preferable, stranding process can not damage conductive surface.

The above is this utility model embodiment, therefore all equivalence changes done according to structure, feature and the principle described in this utility model application range or modification, all it is included in this utility model patent claim.

Claims (2)

1. the moving metal shield monitor type rubber sleeve soft cable for coal mine that blocks water, it is by power wire core, block water packing, inner restrictive coating, semi-conductive tape covering, insulation bag layer, external sheath layer and supervision core composition, it is characterized in that: described power wire core is provided with three groups, uniformly it is extruded in inside the packing that blocks water, one layer of inner restrictive coating of the outer wrapping of the described packing that blocks water, one layer of semi-conductive tape covering of the outer wrapping of described inner restrictive coating, the outer wrapping of described semi-conductive tape covering one layer insulation bag layer, one layer of external sheath layer of outer wrapping of described insulation bag layer, described power wire core is by conductor, conductor shield, power wire core insulating barrier, insulation screen and weaving metallic fibers screen layer composition, described supervision core is provided with three, uniformly it is extruded in inside semi-conductive tape covering.

The moving metal shield monitor type rubber sleeve soft cable for coal mine that blocks water the most according to claim 1, it is characterized in that: cable inner restrictive coating is the low smoke and zero halogen rubber with ethylene-propylene diene copolymer as base material, cable jacket layer is that the low smoke and zero halogen rubber using ethylene-propylene diene copolymer as base material is as oversheath.