CN201607974U

CN201607974U - Mine variable-frequency anti-flaming flexible cable

Info

Publication number: CN201607974U
Application number: CN2009201883849U
Authority: CN
Inventors: 叶明玉
Original assignee: ANHUI GUOHUA CABLE GROUP Co Ltd
Current assignee: ANHUI GUOHUA CABLE GROUP Co Ltd
Priority date: 2009-10-21
Filing date: 2009-10-21
Publication date: 2010-10-13
Anticipated expiration: 2019-10-21

Abstract

A mine variable-frequency anti-flaming flexible cable is characterized in that a main cable core conductor and a ground cable core conductor are respectively formed by twisting a single or a plurality of tinned copper wires. Ethylene-propylene rubber mixed materials are extruded on the main cable core conductor and the ground cable core conductor to form insulation layers to respectively form main insulation cable cores and ground insulation cable cores; and tinned copper wires and fiber yarns are woven outside the three main insulation cable wires to form shield layers; and the three main insulation cable wires and the three ground insulation cable wires are twisted and cabled to form cable cores in interval arrangement manner. Outside the cable cores, a tape layer, an inner sheath layer and a whole shield layer are sequentially arranged from inside to outside; the tape layer is formed by lapping semi-conductive cloth tapes; the inner sheath layer is formed by extrusion; the whole shield layer is formed by weaving; and an outer sheath layer is extruded on the surface of the whole shield layer. The mine variable-frequency anti-flaming flexible cable has higher voltage resistance impact, can bear pulse voltage when in high-speed frequency conversion, and has fine flexibility and abrasion-resistant performance.

Description

Mining frequency conversion flame-retardant flexible electric cable

Technical field

The utility model relates to a kind of low-voltage variable frequency cable, relates in particular to a kind of mining frequency conversion flame-retardant flexible electric cable, belongs to technical field of electric wires and cables.

Background technology

Along with the development of variable-frequency control technique, the speed governing of variable-frequency motor has advantages such as low noise, low energy consumption, speed governing are stable, low cruise is reliable, more and more is subjected to machinery, the attention of controlling industries such as gold and approval.If be applied in coal, the mining industry, will realize automation, the high efficiency of excavation industry.

Also arise at the historic moment for variable-frequency motor provides the frequency-changing cable of power, and because its have strong interference immunity, advantage that the phase sequence symmetry is good, reliable has obtained using widely.

In the applying date is that August 8, application number in 2006 are 200620087760.1, open day were to disclose a kind of " colliery frequency conversion power cable " in the Chinese utility model patent specification on August 29th, 2007, but do not have inner covering during its structure is provided with, have influence on the fail safe and the useful life of its operation; Though it is provided with metal screen layer outside the master core insulation, do not meet reinforced requirement under mobile occasion.Other has the applying date is that October 30, application number in 2006 are 200620126831.4, open day were to disclose a kind of " the anticorrosion converter cable of 10kV heatproof " in the Chinese utility model patent specification on October 24th, 2007, but it is a rigid structure, has following shortcoming:

1, the occasion that frequently moves at needs, when using on the class mechanized equipment as moving in the colliery, this kind frequency-changing cable is because of quality is hard, flexibility is poor, not flexible, inapplicable;

2, the copper strips shielding makes cable bending property variation;

3, in the mining field, the sheath of cable has anti-performance such as pound, hit, press, squeeze, and employing plastics class sheath is not suitable for.

The utility model content

The utility model is for avoiding above-mentioned existing in prior technology weak point, a kind of stronger proof voltage impulsive force that has is provided, the pulse voltage in the time of standing the high speed frequency conversion, flexibility, the mining frequency conversion flame-retardant flexible electric cable that anti-wear performance is good.

The utility model technical solution problem adopts following technical scheme:

The design feature of the utility model is mining frequency conversion flame-retardant flexible electric cable is that master core conductor and ground wire core conductor are respectively by single or many stranded formation of tinned copper wire, on described master core conductor and ground wire core conductor, extrude ethylene-propylene rubber compound formation insulating barrier and constitute main insulation core and ground insulated wire cores respectively, outside three main insulation cores, weave tinned copper wire and silvalin respectively and constitute screen, and be spaced stranded stranding formation cable core with three ground insulated wire cores; Outside cable core, what set gradually from inside to outside is the total screen that constitutes by belting layer, the inner restrictive coating that extrudes formation, braiding that wrapped semi-conductive cloth tape forms, is extruded with external sheath layer in the appearance of described total screen.

Described master core conductor, ground wire core conductor are the 5th class or the 6th class tin-coated copper conductor;

Described ground wire core conductor area of section is not less than the sixth of master core cross-sectional area of conductor area;

Described three main insulation cores and three ground insulated wire cores symmetries are spaced the formation cable core;

Tinned copper wire in the described screen is identical with the silvalin number of spindles, direction is opposite;

Described total screen adopts bare copper wire or tinned copper wire braiding to form;

Described external sheath layer adopts haloflex, neoprene rubber or chlorosulfonated polyethylene material to extrude formation.

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

1, the utility model has been taken all factors into consideration the environment in mining field and the requirement of cable operation, conductor has adopted the 5th class or the 6th class tinned copper wire, insulation and sheath adopt the rubber material, make cable soft more, be convenient to flexible, frequent moving, simultaneously tinned copper wire prevents conductor oxidized increase that causes resistance in the utilization process, causes heating and causes fire to take place;

2, the utility model cable ground wire core conductor area is not less than the master core sixth, the gross area be not less than the main cross section half, increased the cable loop ampacity, guarantee the fail safe of cable;

3, three master cores of the utility model and three ground core symmetries are spaced, and have improved Electro Magnetic Compatibility, than the better electrical property of quad;

4, the utility model weaves tinned copper wire/silvalin formation screen at insulating barrier, improves the shielding properties of cable on the one hand, has improved the tensile property of cable on the other hand;

5, the total screen of the utility model adopts bare copper wire or tinned copper wire braiding, has improved bending, the softness of cable;

6, the utility model external sheath layer (7) adopts haloflex or materials such as neoprene rubber, chlorosulfonated polyethylene to extrude formation, and its class material has higher mechanical properties and fire resistance, satisfies the adverse circumstances and the fail safe of mining.

Description of drawings

Fig. 1 is the utility model structural representation.

Number in the figure: 1a master core conductor, 1b ground wire core conductor, 2a main insulation core, 2b ground insulated wire cores, 3 screens, 4 belting layers, 5 inner restrictive coatings, 6 total screens, 7 external sheath layers.

Below by embodiment, the utility model is described in further detail in conjunction with the accompanying drawings.

Embodiment

Referring to Fig. 1, master core conductor 1a and ground wire core conductor 1b are respectively by single or many stranded formation of tinned copper wire in the present embodiment, on master core conductor 1a and ground wire core conductor 1b, extrude ethylene-propylene rubber compound formation insulating barrier and constitute main insulation core 2a and ground insulated wire cores 2b respectively, outside three main insulation core 2a, weave tinned copper wire and silvalin respectively and constitute screen 3, and be spaced stranded stranding formation cable core with three ground insulated wire cores 2b; Outside cable core, what set gradually from inside to outside is the total screen 6 that constitutes by belting layer 4, the inner restrictive coating 5 that extrudes formation, braiding that wrapped semi-conductive cloth tape forms, is extruded with external sheath layer 7 in the appearance of total screen 6.

In concrete the enforcement, master core conductor 1a, ground wire core conductor 1b are the 5th class or the 6th class tin-coated copper conductor; The area of section of ground wire core conductor 1b is not less than the sixth of master core conductor 1a area of section; Three main insulation core 2a and three ground insulated wire cores 2b symmetries are spaced the formation cable core; Silvalin in the screen 3 adopts aramid yarn, and tinned copper wire is identical with the aramid yarn number of spindles, direction is opposite; Total screen 6 adopts bare copper wire or tinned copper wire braiding to form; External sheath layer 7 adopts haloflex, neoprene rubber or chlorosulfonated polyethylene material to extrude formation.

Claims

1. mining frequency conversion flame-retardant flexible electric cable, it is characterized in that master core conductor (1a) and ground wire core conductor (1b) are respectively by single or many stranded formation of tinned copper wire, on described master core conductor (1a) and ground wire core conductor (1b), extrude the formation insulating barrier and constitute main insulation core (2a) and ground insulated wire cores (2b) respectively, outside three main insulation cores (2a), weave tinned copper wire and silvalin respectively and constitute screen (3), and be spaced stranded stranding formation cable core with three ground insulated wire cores (2b); Outside cable core, what set gradually from inside to outside is the total screen (6) that constitutes by belting layer (4), the inner restrictive coating (5) that extrudes formation, braiding that wrapped semi-conductive cloth tape forms, is extruded with external sheath layer (7) in the appearance of described total screen (6).

2. mining frequency conversion flame-retardant flexible electric cable according to claim 1 is characterized in that described master core conductor (1a), ground wire core conductor (1b) are the 5th class or the 6th class tin-coated copper conductor.

3. mining frequency conversion flame-retardant flexible electric cable according to claim 1 is characterized in that described ground wire core conductor (1b) area of section is not less than the sixth of master core conductor (1a) area of section.

4. mining frequency conversion flame-retardant flexible electric cable according to claim 1 is characterized in that described three main insulation cores (2a) and three ground insulated wire cores (2b) symmetries are spaced the formation cable core.

5. mining frequency conversion flame-retardant flexible electric cable according to claim 1 is characterized in that the tinned copper wire in the described screen (3) is identical with the silvalin number of spindles, direction is opposite.

6. mining frequency conversion flame-retardant flexible electric cable according to claim 1 is characterized in that described total screen (6) adopts bare copper wire or tinned copper wire braiding to form.

7. mining frequency conversion flame-retardant flexible electric cable according to claim 1 is characterized in that described external sheath layer (7) adopts haloflex, neoprene rubber or chlorosulfonated polyethylene material to extrude formation.