CN201910283U

CN201910283U - Mining water-resisting medium-voltage cable

Info

Publication number: CN201910283U
Application number: CN2010206515901U
Authority: CN
Inventors: 夏亚芳; 陈晓军; 朱华英; 付健; 董云龙
Original assignee: Wuxi Jiangnan Cable Co Ltd
Current assignee: Wuxi Jiangnan Cable Co Ltd
Priority date: 2010-12-10
Filing date: 2010-12-10
Publication date: 2011-07-27
Anticipated expiration: 2020-12-10

Abstract

The utility model discloses a mining water-resisting medium-voltage cable. The cable adopts the structure that a cable core formed by stranding a plurality of single cores is arranged in the middle of the cable, each single core consists of a conductor in the middle, as well as an insulating layer, a semi-conductive shielding belt and a metal/water-resisting fiber yarn braided layer which are sequentially arranged outside the conductor, water-resisting filler yarns are filled in the clearances among the single cores and the central gap, a water-resisting belt layer, an inner sheath, two water-resisting belts and an outer sheath are sequentially arranged outside the cable core, a surveillance wire core layer is clamped between the two water-resisting belts, the outer sheath is extruded on the outermost layer, the metal/water-resisting fiber yarn braided layer is woven crosswise by braided yarns made of tin plated copper wires and water-resisting fiber yarns, and the tin plated copper wires and the fiber yarns have the same number of spindles and are in opposite directions. In the utility model, after being wrapped by the conductive shielding belt, the cable is woven crosswise by the braided yarns made of the tin plated copper wires and the water-resisting fiber yarns, the two layers of double-sided water-resisting belts are wrapped outside the cable core in an overlapping manner, the project product with the water-resisting fiber yarns, the water-resisting filler yarns and the double-layered double-sided water-resisting belts can effectively prevent moisture from invasion to ensure the security of mining products.

Description

A kind of mining midium voltage cable that blocks water

Technical field

The utility model relates to a kind of cable, specifically is a kind of mining midium voltage cable that blocks water.

Background technology

In recent years, the safety of coal mines situation is very severe, and for guaranteeing production safety, country can require more and more higher to mining security of products.Power supply cable as mining coal excavation apparatus, the security performance of mining cabtyre cable and inherent quality have direct influence to the safety in colliery, raising day by day along with mining machinery producing capacity and place capacity, the consumption of rubber insulation mining cable is increasing, also makes the demand of rubber insulation mining cable product further strengthen.Subsurface environment humidity, downhole cable often need to come and go mobile and crooked, and the fragment that explosion produces also can thrust cable insulation and sheath, can cause the damage of cable cover(ing).When cable suffered damage, water tended to infiltrate through outer protective sleeve from breakage, and extended a segment distance, at this moment, was reduced the useful life of cable greatly.Moisture also can be invaded cable inside from the sheath of cable and the end of cable, causes oxidation, the corrosion of conductor, influences the electrical property of cable, even the abnormal broken line accident takes place, and badly influences production safety.

The utility model content

Technical problem to be solved in the utility model provides the good mining midium voltage cable that blocks water of a kind of water resistance.

The mining midium voltage cable that blocks water described in the utility model, be by the stranded cable core that forms of some single cores in the middle of the cable, described single core sets gradually insulating barrier, semi-conductive screen band and the metal/silvalin braid that blocks water outward by the conductor of centre and conductor and forms, gap and center gap between single core are filled the gasket for packing that blocks water, set gradually water blocking tape layer, inner sheath, the two-layer band therebetween pilot wire sandwich layer that blocks water outside cable core, outermost layer extrudes oversheath.

For improving water proofing property, in above-mentioned conductor, be filled with hypotonic water blocking yarn or water-proofing powder.

Above-mentioned metal/silvalin the braid that blocks water preferably forms with the strand interlacing that the tinned copper wire and the silvalin that blocks water are formed, and the number of spindles of tinned copper wire and silvalin is identical, and direction is opposite.

Above-mentioned water blocking tape layer is preferably wrapped the forming of two-layer two-sided waterstop.

The strand interlacing that the utility model adopts tinned copper wire behind wrapped conductive shield band and the silvalin that blocks water is formed.The number of spindles of tinned copper wire and silvalin is identical, and direction is opposite, can embed the next recognition methods as insulated wire cores of dyed yarn (it is red, white, light blue that the dyed yarn color is respectively) in the silvalin of braiding usefulness.The stranded stranding of insulated wire cores, stranding outer rim gap and center gap adopt the gasket for packing that blocks water to fill.The outer overlapping wrapped two-layer two-sided waterstop of cable core.By the silvalin that blocks water, the gasket for packing that blocks water, the double-layer and double-side waterstop, the project product can effectively stop the intrusion of moisture content, guarantees the safety of mining product.

The occasion more when moisture content or safety requirements is higher, project product also can adopt novel hypotonic water blocking yarn or water-proofing powder that cable conductor is filled, and realize comprehensive water resistance characteristic of cable.Filled water blocking yarn or water-proofing powder in the process of pressing, when the conductor of cable was intake, water blocking yarn ran into water and can expand, and can effectively stop the internal penetration of water to cable, and does not influence the mechanical and physical performance and the electric property of conductor.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Embodiment

As shown in Figure 1, the mining midium voltage cable that blocks water described in the utility model, be by the stranded cable core that forms of some single cores in the middle of this cable, described single core sets gradually insulating barrier 2, semi-conductive screen band 3 and the metal/silvalin braid 4 that blocks water outward by the conductor 1 of centre and conductor to be formed, and wherein is filled with hypotonic water blocking yarn or water-proofing powder in the conductor 1.Metal/silvalin the braid 4 that blocks water is that the strand interlacing that the tinned copper wire and the silvalin that blocks water are formed forms, and the number of spindles of tinned copper wire and silvalin is identical, and direction is opposite.Gap and center gap between single core are filled the gasket for packing 5 that blocks water, and set gradually water blocking tape layer 6, inner sheath 7, the two-layer band therebetween pilot wire sandwich layer 8 that blocks water outside cable core, and outermost layer extrudes oversheath 9.

The utility model provides a kind of thinking and execution mode of the mining midium voltage cable that blocks water; concrete application approach is a lot; the above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also make some improvement, these improvement also should be considered as protection range of the present utility model.

Claims

1. mining midium voltage cable that blocks water, it is characterized in that: be in the middle of the cable by the stranded cable core that forms of some single cores, described single core is made up of insulating barrier (2), semi-conductive screen band (3) and the metal/silvalin braid (4) that blocks water that the conductor (1) and the conductor of centre sets gradually outward, gap and center gap between single core are filled the gasket for packing (5) that blocks water, set gradually water blocking tape layer (6), inner sheath (7), the two-layer band therebetween pilot wire sandwich layer (8) that blocks water outside cable core, outermost layer extrudes oversheath (9).

2. the mining midium voltage cable that blocks water according to claim 1 is characterized in that: described conductor is filled with hypotonic water blocking yarn or water-proofing powder in (1).

3. the mining midium voltage cable that blocks water according to claim 1 and 2, it is characterized in that: the metal/silvalin braid (4) that blocks water is that the strand interlacing that the tinned copper wire and the silvalin that blocks water are formed forms, the number of spindles of tinned copper wire and silvalin is identical, and direction is opposite.

4. according to claim 1, the 2 or 3 described mining midium voltage cables that block water, it is characterized in that: described water blocking tape layer (6) is wrapped the forming of two-layer two-sided waterstop.