CN204257240U - Cold-resistant flexible cable is pressed in a kind of ethylene-propylene rubber insulated - Google Patents
Cold-resistant flexible cable is pressed in a kind of ethylene-propylene rubber insulated Download PDFInfo
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- CN204257240U CN204257240U CN201420828481.0U CN201420828481U CN204257240U CN 204257240 U CN204257240 U CN 204257240U CN 201420828481 U CN201420828481 U CN 201420828481U CN 204257240 U CN204257240 U CN 204257240U
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- wire core
- power wire
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Abstract
Press cold-resistant flexible cable in a kind of ethylene-propylene rubber insulated, relate to electrical engineering technical field.This device comprises EU external sheath layer, inner restrictive coating, be wrapped in three power wire core in inner restrictive coating, be disposed on two ground connection cores and an earthing detection core of adjacent cable power wire core outer rim gap location, and be positioned at the packing at three power wire core intermediate space places; Described power wire core comprise the annealing flexible conductor strand system that the metallic copper after adopting annealing is prepared from power wire core conductor, be wrapped in the semiconductive conductor shield outside cable core conductor, adopting high-modulus ethylene propylene diene rubber to be power wire core insulating barrier, semi-conductive insulation shield layer, the metal screen layer that conductor insulation material extrudes successively from inside to outside.The utility model solve surface mine move electric power system or other similar applications electric power system needs a large amount of voltage levels, removable, wear-resisting, cold-resistant, fail safe is high, the problem of the high performance cable of good bending property.
Description
Technical field
The utility model relates to electronic information-electric equipment and electrical engineering H01B technical field, relates to specifically press cold-resistant flexible cable in ethylene-propylene rubber insulated.
Background technology
At present, open coal mine annual production the biggest in the world reaches 50 ~ 60Mt/a, is positioned at the states such as Germany, the U.S., Kazakhstan; The open coal mine of more than annual production 20Mt/a is then throughout states such as Russia, China, Australia, Poland, Czech.Being occupied the centralization share of coal production and market sale by large-size enterprise group, is that another important trend is developed in mining industry centralization.Within 2000, international ten large Coal Corporations control the coal annual production of 8.5 hundred million tons.
Strip coal mining has resource close friend---and high stoping rate, can reach more than 95%; It is integrated with Eco-environmental Reconstruction that environmental friendliness---land reclamation easily realizes surface mining; Safety is friendly---and the death rate is low, can keep zero death rate for years; Concentrated extracting---production scale is large, tonnage expenditure and production cost low; Mechanization degree and per capita work efficiency are high, are convenient to realize the advantages such as modern management, can give prominence to the exploitation embodying coal resources safety, high-yield and high-efficiency, high-recovery.Each main coal mining state of the world all first develops strip coal mining.Various countries' strip mining transformation output proportion is as follows: Germany 76.6%, Australia 71.2%, India 70.5%, the U.S. 67.0%, Russia 58.2%, South Africa 52.9%, Poland 32.0%.And the output of China's open coal mine only accounts for about 5.0% of total output at present.
Since entering 21 century, China's strip coal mining new upsurge is risen.The develop and design of open coal mine is the important component part that China the Eleventh Five-Year Plan period builds 13 Large-scale Coal bases.Propose in country's " Eleventh Five-Year Plan coal industry development plan " " Large-scale Coal construction of base will based on Large Coal Enterprises, the large-scale modernization open coal mine of preferential construction and mine "; Explicitly point out in " Chinese Policy of Technology For Energy Saving outline " 12.3.1 " Newly-built mine, when mining technique and economic condition allow, preferentially adopts strip mining transformation ".Surface mining technique just maximizes towards winning apparatus, supporting; Production practice centralization, serialization, synthesization future development.Wherein dredger dredge bucket volume reaches 76.5m
3, Weight Loaded is more than 100t, and drawing bucket, dipper capacity is maximum reaches 168m
3, drive that gross power is maximum reaches 37300kW.Due to the particularity of open coal mine working condition and technological process, special requirement is had to electric power system, especially the core that under outdoor pit, electric power system is powered as whole colliery, it has very important effect to safe, reliable, the economy that whole colliery powers.Because open pit quarry condition of work is severe especially, cable frequently drags on ground, to blow out and stone such as to drop at the reason in addition, and cause cable to injure damage by a crashing object, consumption is large, and power supply production cost is high.Surface mine power supply-distribution system needs a large amount of voltage levels, removable, wear-resisting, cold-resistant, fail safe is high, the high performance cable of good bending property.Research and development mesohigh rubber cover power cable can provide how safe, economic power supply to select for mine.
Summary of the invention
Cold-resistant flexible cable is pressed in a kind of ethylene-propylene rubber insulated that the purpose of this utility model provides for weak point existing in above-mentioned prior art just.Cable of the present utility model solve surface mine move electric power system or other similar applications electric power system needs a large amount of voltage levels, removable, wear-resisting, cold-resistant, fail safe is high, the problem of the high performance cable of good bending property, both ensure that the electric property of cable, in turn ensure that travelling performance and the safe application performance of cable.
The purpose of this utility model realizes by following technique measures:
Cold-resistant flexible cable is pressed to comprise EU external sheath layer, inner restrictive coating in ethylene-propylene rubber insulated of the present utility model, be wrapped in three power wire core in inner restrictive coating, be disposed on two ground connection cores and an earthing detection core of adjacent cable power wire core outer rim gap location, and be positioned at the packing at three power wire core intermediate space places; Described power wire core comprise the annealing flexible conductor strand system that the metallic copper after adopting annealing is prepared from power wire core conductor, be wrapped in semiconductive conductor shield outside power wire core conductor successively from inside to outside, adopt high-modulus ethylene propylene diene rubber to be power wire core insulating barrier, semi-conductive insulation shield layer, the metal screen layer that conductor insulation material extrudes.
Described metallic copper is the 5th kind of metallic copper, more specifically refers to the annealed copper wire of plating or not plating.
The regulation of GB/T 3956 is met when cable of the present utility model is through measuring conductor resistance at 20 DEG C, power wire core insulation tensile strength >=8.5MPa, modulus of elasticity under 150% percentage elongation is not less than 4.5 MPa, EU sheath tensile strength >=25MPa, elongation at break >=300% ,-55 DEG C of cryogenic tensiles test non-elongation at break >=30%, finished cable-55 DEG C of low temperature bend test flawlesses.
The beneficial effects of the utility model are as follows:
Cable of the present utility model not only has excellent electric property, and has very high operational reliability, and cable has soft resistant to bending feature simultaneously, has very little bending radius, makes installation, joint and end-blocking more easy.Solve surface mine move electric power system or other similar applications electric power system needs a large amount of voltage levels, removable, wear-resisting, cold-resistant, fail safe is high, the problem of the high performance cable of good bending property.
Accompanying drawing explanation
Fig. 1 is the structural representation (cross section) of the utility model cable.
Sequence number in figure: 1-wire core conductor; 2-semi-conductive layer; 3-power wire core conductor; 4-semiconductive conductor shield; 5-power wire core insulating barrier; 6-semi-conductive insulation shield layer; 7-metal screen layer; 8-earthing detection core conductor; 9-earthing detection core insulate; 10-inner sheath; 11-EU external sheath layer; 12-packing.
Embodiment
The utility model is further described below with reference to embodiment (accompanying drawing):
As shown in Figure 1, cold-resistant flexible cable is pressed in ethylene-propylene rubber insulated of the present utility model, comprise EU external sheath layer 11, inner restrictive coating 10, be wrapped in three power wire core in inner restrictive coating 10, be disposed on two ground connection cores and an earthing detection core of adjacent cable power wire core outer rim gap location, and be positioned at the packing 12 at three power wire core intermediate space places; Described power wire core comprise the annealing flexible conductor strand system that the metallic copper after adopting annealing is prepared from power wire core conductor 3, be wrapped in semiconductive conductor shield 4 outside power wire core conductor successively from inside to outside, adopt high-modulus ethylene propylene diene rubber to be power wire core insulating barrier 5, semi-conductive insulation shield layer 6, the metal screen layer 7 that conductor insulation material extrudes.
Described ground connection core is made up of wire core conductor 1 and the semi-conductive layer 2 be wrapped in outside wire core conductor 1; Described earthing detection core is by earthing detection core conductor 8 and is wrapped in earthing detection core that earthing detection core conductor is and insulate and 9 to form.
Claims (1)
1. press cold-resistant flexible cable in an ethylene-propylene rubber insulated, it is characterized in that: it comprises EU external sheath layer, inner restrictive coating, be wrapped in three power wire core in inner restrictive coating, be disposed on two ground connection cores and an earthing detection core of adjacent cable power wire core outer rim gap location, and be positioned at the packing at three power wire core intermediate space places; Described power wire core comprise the annealing flexible conductor strand system that the metallic copper after adopting annealing is prepared from power wire core conductor, be wrapped in semiconductive conductor shield outside power wire core conductor successively from inside to outside, adopt high-modulus ethylene propylene diene rubber to be power wire core insulating barrier, semi-conductive insulation shield layer, the metal screen layer that conductor insulation material extrudes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420828481.0U CN204257240U (en) | 2014-12-24 | 2014-12-24 | Cold-resistant flexible cable is pressed in a kind of ethylene-propylene rubber insulated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420828481.0U CN204257240U (en) | 2014-12-24 | 2014-12-24 | Cold-resistant flexible cable is pressed in a kind of ethylene-propylene rubber insulated |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204257240U true CN204257240U (en) | 2015-04-08 |
Family
ID=52961523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420828481.0U Expired - Fee Related CN204257240U (en) | 2014-12-24 | 2014-12-24 | Cold-resistant flexible cable is pressed in a kind of ethylene-propylene rubber insulated |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204257240U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795153A (en) * | 2015-04-16 | 2015-07-22 | 江苏永达采煤机电缆制造有限公司 | Tensile cable |
| CN106373646A (en) * | 2016-08-26 | 2017-02-01 | 江苏上上电缆集团有限公司 | Wear-resistant, drag-resistant and low-temperature resistant flexible cable and fabrication method thereof |
-
2014
- 2014-12-24 CN CN201420828481.0U patent/CN204257240U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795153A (en) * | 2015-04-16 | 2015-07-22 | 江苏永达采煤机电缆制造有限公司 | Tensile cable |
| CN104795153B (en) * | 2015-04-16 | 2016-08-24 | 江苏永达采煤机电缆制造有限公司 | The cable of stretching resistance |
| CN106373646A (en) * | 2016-08-26 | 2017-02-01 | 江苏上上电缆集团有限公司 | Wear-resistant, drag-resistant and low-temperature resistant flexible cable and fabrication method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20161224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |