CN206312644U - The core power cable for subway of small external diameter two - Google Patents
The core power cable for subway of small external diameter two Download PDFInfo
- Publication number
- CN206312644U CN206312644U CN201621415516.3U CN201621415516U CN206312644U CN 206312644 U CN206312644 U CN 206312644U CN 201621415516 U CN201621415516 U CN 201621415516U CN 206312644 U CN206312644 U CN 206312644U
- Authority
- CN
- China
- Prior art keywords
- layer
- outer layer
- insulating barrier
- woven fabrics
- subway
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000004888 barrier function Effects 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000004020 conductor Substances 0.000 claims abstract description 23
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 20
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 19
- 239000000779 smoke Substances 0.000 claims abstract description 16
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 14
- 150000002367 halogens Chemical class 0.000 claims abstract description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 11
- 239000001301 oxygen Substances 0.000 claims abstract description 11
- 239000003063 flame retardant Substances 0.000 claims abstract description 9
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 238000005728 strengthening Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 8
- 241000283984 Rodentia Species 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 2
- 238000009954 braiding Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical group 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model is related to a kind of core power cable for subway of small external diameter two, it is characterized in that：Including inner wire, in the outer layer wrapping bag reinforced non-woven fabrics of inner wire, the first EPDM insulating barrier is extruded in the outer layer of reinforced non-woven fabrics, in the outer braid outer conductor of the first EPDM insulating barrier, in the outer layer wrapping bag reinforced non-woven fabrics of outer conductor, the second EPDM insulating barrier is extruded in the outer layer of reinforced non-woven fabrics, low smoke and zero halogen oxygen barrier layer is extruded in the outer layer of the second EPDM insulating barrier, in the wrapped yarn layer that blocks water of the outer layer of low smoke and zero halogen oxygen barrier layer, low-smoke halogen-free flame-retardant sheath layer is extruded in the outer layer of the yarn layer that blocks water.The core power cable for subway simple structure of small external diameter described in the utility model two, with good bandability, rodent-proof characteristic with short production cycle, with the long period, water resistance is splendid, and number of times and set-up time advantage are laid in lightweight, environmentally friendly, reduction.
Description
Technical field
The utility model is related to a kind of cable, and especially a kind of core power cable for subway of small external diameter two, belongs to cable skill
Art field.
Background technology
Metro Cable be it is a kind of be the cable of metro traction system power supply, therefore cable reliability directly affects subway fortune
Capable reliability, and cable is used in subway line, it is high to the requirement of its low smoke and zero halogen, and want subway line
Cable be to be in the region for thering is part location to have water and mouse life, therefore cable should have preferable water resistance and protection against rodents
Performance.To realize above-mentioned requirements, the structure and material of cable is as follows in prior art：
Conductor：Because trailer system uses 1500V DC voltages, therefore the cross-section of cable will reach 400mm2, existing
It is 400mm2 to employ the sectional area that the 2 class copper conductors of filament diameter no more than 2.99mm are made in technology in the selection of conductor
Copper conductor.
Insulation：In view of the electrical property and low smoke and zero halogen performance of cable, usual cable insulation uses the poly- second of crosslinking
Alkene；
Waterproof construction：Because rainy season can cause cable long period of soaking in water, by thickening sheath and in interior shield in cable
Layer is outer to be increased by one layer of waterproof layer to improve cable radial direction water resistance, and waterproof layer is typically one layer fire retardant nonwoven fabric belts.
Armor：The Main Function of armor is protection against rodents, is generally arranged between sheath and waterproof layer, and armor is used
Material be usually steel band or copper strips.
Sheath：In order to strengthen rodent-proof characteristic, and low-smoke non-halogen flame-retardant performance is realized, generally added using in polyolefine material
Enter Ratproof agent（Synthesis pungent element）To realize.
There is problems with and shortcoming in prior art：
1st, cable flexibility is poor：Due to the crosslinked polyolefin materials that the insulation of cable in the prior art, sheath are used, in addition
Conductor is the 2 class conductors for using, therefore the overall flexibility of cable is poor, it has not been convenient to installed；
2nd, protection against rodents effect is poor：Because the mode of the synthesis pungent element in sheath belongs to chemical mode, over time,
Synthesis pungent element can fade away, so as to lose rodent-proof characteristic.And the metal armor layers for using, after restrictive coating is broken by the teeth, metal armour
The easily accelerated ageing in dark moist environment of dress layer, can reduce cable service life；
4th, produce not environmentally：Synthesis pungent element is added in sheath material, to the skin of direct labor, respiratory tract all spinosities
Swash, have injury to human body；
5th, block-water effect is poor：Block-water effect by " thickening the coat layer of power cable+waterproof layer " mode is poor, and restrictive coating is easy
To be broken by mouse, and fire retardant nonwoven fabric major function is fire-retardant effect, due to using around-packing technology, be there are certain
Space, can cause that the water of outside enters inside cable；
6th, the mounting and installation time is long：All be due to this kind of cable using single structure, therefore needed when being laid in circuit into
Row is repeatedly laid, and because space is smaller in subway, requires that pipeline space is larger when laying multi-cable, therefore major trunk roads circuit is needed
Often to widen, influence project progress.
The content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of core subway electricity consumption of small external diameter two
Power cable, can solve the problem that prior art cable flexibility is poor, protection against rodents effect is poor, production process not environmentally, block-water performance it is poor, many
The problem that the outside diameter of cable is big, the mounting and installation time is long.
According to the utility model provide technical scheme, the core power cable for subway of the small external diameter two, it is characterized in that：Bag
Inner wire is included, in the outer layer wrapping bag reinforced non-woven fabrics of inner wire, the first EPDM is extruded in the outer layer of reinforced non-woven fabrics
Insulating barrier, in the outer braid outer conductor of the first EPDM insulating barrier, in the outer layer wrapping bag reinforced non-woven fabrics of outer conductor,
The outer layer of reinforced non-woven fabrics extrudes the second EPDM insulating barrier, the outer layer of the second EPDM insulating barrier extrude low cigarette without
Halogen oxygen barrier layer, in the wrapped yarn layer that blocks water of the outer layer of low smoke and zero halogen oxygen barrier layer, low-smoke non-halogen flame-retardant is extruded in the outer layer of the yarn layer that blocks water
Restrictive coating.
Further, the inner wire uses filament diameter to be twisted into strand for 33 copper wire bundles of 0.49mm, then by 61
Strand stranded is formed using the structure of 1+6+12+18+24.
Further, it is the proof copper-wire braided of 0.49mm in the first EPDM that the outer conductor uses 2013 filament diameters
The outer layer of insulating barrier.
The core power cable for subway simple structure of small external diameter described in the utility model two, with good bandability, production cycle
Rodent-proof characteristic short, with the long period, water resistance is splendid, lightweight, environmentally friendly, number of times is laid in reduction and the set-up time is excellent
Point.
Brief description of the drawings
Fig. 1 is the structural representation of the core power cable for subway of small external diameter described in the utility model two.
Description of reference numerals：It is inner wire 1, reinforced non-woven fabrics 2, the first EPDM insulating barrier 3, outer conductor 4, reinforced
Non-woven fabrics 5, the second EPDM insulating barrier 6, low smoke and zero halogen oxygen barrier layer 7, block water yarn layer 8, low-smoke halogen-free flame-retardant sheath layer 9.
Specific embodiment
With reference to specific accompanying drawing, the utility model is described in further detail.
As shown in figure 1, the core power cable for subway of small external diameter described in the utility model two includes inner wire 1, inner wire 1 is adopted
Strand is twisted into 33 copper wire bundles that filament diameter is 0.49mm, 61 strands are being used into 1+6+12+18+24 just again during process
Advise that stranded mode is stranded to be formed；In the outer layer wrapping bag reinforced non-woven fabrics 2 of inner wire 1 while stranded inner wire 1, interior leading is prevented
Body 1 is loose, and then the outer layer in reinforced non-woven fabrics 2 extrudes the first EPDM insulating barrier 3, then exhausted in the first EPDM
It is the proof copper-wire braided of 0.49mm into outer conductor 4 by 2013 filament diameters that the outer layer of edge layer 3 uses the method for braiding, after braiding again
In the outer layer wrapping bag reinforced non-woven fabrics 5 of outer conductor 4, then to extrude the second EPDM exhausted for the outer layer in reinforced non-woven fabrics 5
Edge layer 6, then the outer layer in the second EPDM insulating barrier 6 extrude low smoke and zero halogen oxygen barrier layer 7, then in low smoke and zero halogen oxygen barrier layer
The wrapped yarn layer 8 that blocks water of 7 outer layer, finally the outer layer in the yarn layer 8 that blocks water extrude low-smoke halogen-free flame-retardant sheath layer 9, it is desirable to low cigarette without
Any surface finish of halogen resistance alkene restrictive coating 9, free from admixture and scratch.
The operation principle of the core power cable for subway of small external diameter described in the utility model two：
1st, the flexibility of cable is improved：The flexibility and resist bending ability of cable depend primarily on the structure of cable, and
The structure of conductor wire core plays vital effect again in the construction of cable.In order that conductor wire core is soft, resist bending, with compared with
Conductance high, the utility model is by conductor design into thin monofilament, beam stock, the compound structure for twisting.For the Special use of cable
Mode, uses filament diameter to be twisted into strand for 33 copper wire bundles of 0.49mm；61 strands are used into 1+6+12+18 again during process
+ 24 regular stranded mode carries out stranded, makes conductor structure more stable, and tightness degree is high, and external diameter is small, conductor wire core pliability
It is good.Conductor shielding, insulating barrier, insulation screen are using the elastomeric material that pliability is very high in other utility model so that electricity
The integrally bending of cable is fine.
2nd, enhancing rodent-proof characteristic and the environmental-protecting performance of production：The utility model employs physics protection against rodents mode, will not opposite
Workman is produced to impact.Its protection against rodents principle is, because mouse cannot be bitten with diameter greater than 20mm's in the case of without impetus
Cable, therefore the outside diameter of cable is fabricated into the utility model into more than 40mm and cable surface is very smooth, cable surface is without any
Markings, markings also cause mouse when cable is stung without impetus.Adopt in this way, not only environmental protection, and manufacturing procedure
Not cumbersome, protection against rodents effect is good.
4th, water resistance：Waterproof construction of the present utility model is " oxygen barrier layer+block water yarn layer ", and on the one hand oxygen barrier layer plays one
Fixed radial direction water resistance, on the other hand improves the fire resistance of cable, protects internal structure, and the effect of the yarn layer that blocks water
Be once cable cover(ing) breakage water enter cable inside, water blocking yarn can expand rapidly, prevent water go successively to inside cable.
5th, reduce and lay number of times and lay the time：The utility model merges in a cable two master cores, this
Structure causes that the original cable for needing to lay twice is compared and is reduced to 1 time, and master core uses concentric type structure, with original two
Root takes up room compared with O. cable and reduces 30%, so as to meet the requirement of small external diameter cable.
Claims (3)
1. the core power cable for subway of a kind of small external diameter two, it is characterized in that：Including inner wire（1）, in inner wire（1）Outer layer around
Bag reinforced non-woven fabrics（2）, in reinforced non-woven fabrics（2）Outer layer extrude the first EPDM insulating barrier（3）, in the first ternary
The insulating barrier of second third（3）Outer braid outer conductor（4）, in outer conductor（4）Outer layer wrapping bag reinforced non-woven fabrics（5）, strengthening
Type non-woven fabrics（5）Outer layer extrude the second EPDM insulating barrier（6）, in the second EPDM insulating barrier（6）Outer layer extrude
Low smoke and zero halogen oxygen barrier layer（7）, in low smoke and zero halogen oxygen barrier layer（7）The wrapped yarn layer that blocks water of outer layer（8）, in the yarn layer that blocks water（8）It is outer
Layer extrudes low-smoke halogen-free flame-retardant sheath layer（9）.
2. the core power cable for subway of small external diameter two as claimed in claim 1, it is characterized in that：The inner wire（1）Using list
33 copper wire bundles of a diameter of 0.49mm of silk are twisted into strand, then by 61 strands using the structure of 1+6+12+18+24 it is stranded and
Into.
3. the core power cable for subway of small external diameter two as claimed in claim 1, it is characterized in that：The outer conductor（4）Using
2013 filament diameters are the proof copper-wire braided of 0.49mm in the first EPDM insulating barrier（3）Outer layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621415516.3U CN206312644U (en) | 2016-12-22 | 2016-12-22 | The core power cable for subway of small external diameter two |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621415516.3U CN206312644U (en) | 2016-12-22 | 2016-12-22 | The core power cable for subway of small external diameter two |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206312644U true CN206312644U (en) | 2017-07-07 |
Family
ID=59247217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621415516.3U Expired - Fee Related CN206312644U (en) | 2016-12-22 | 2016-12-22 | The core power cable for subway of small external diameter two |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206312644U (en) |
-
2016
- 2016-12-22 CN CN201621415516.3U patent/CN206312644U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170707 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |