CN103035336A - Direct current power cable - Google Patents
Direct current power cable Download PDFInfo
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- CN103035336A CN103035336A CN 201110297585 CN201110297585A CN103035336A CN 103035336 A CN103035336 A CN 103035336A CN 201110297585 CN201110297585 CN 201110297585 CN 201110297585 A CN201110297585 A CN 201110297585A CN 103035336 A CN103035336 A CN 103035336A
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- semiconductive
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Abstract
The invention relates to a power cable, in particular to a direct current power cable. A conductor (1), an insulating layer (4), a metal shielding layer (7), a taped covering (8) and an outer sheath (9) are sequentially arranged on the direct current power cable from inside to outside, a semiconductive wrapping shielding layer A (2), a semiconductive shielding layer A (3), a semiconductive shielding layer B (5) and a semiconductive wrapping shielding layer B (6) are further arranged on the direct current power cable, the semiconductive wrapping shielding layer A (2) wraps the conductor (1), the semiconductive shielding layer A (3) extrudes the semiconductive wrapping shielding layer A (2), the insulating layer (4) extrudes the semiconductive shielding layer A (3), the semiconductive shielding layer B (5) extrudes the insulating layer (4), the semiconductive wrapping shielding layer B (6) wraps the semiconductive shielding layer B (5), and the metal shielding layer (7) wraps the semiconductive wrapping shielding layer B (6). The direct current power cable is excellent in softness and electromagnetic shielding performance, environment-friendly, safe and reliable in performances and long in service life.
Description
Technical field
The present invention relates to a kind of power cable, particularly a kind of insulation DC electric cable is applicable to rated voltage more than 5000V reaches, and it also can be used for common land power cable mainly as the warship ship power cable.
Background technology
Power cable can be divided into insulation DC electric cable and ac power cable by the difference of transmission current.There are many advantages in insulation DC electric cable by contrast, low such as line cost, line loss is little, the applied electric field intensity of insulation is high, insulation thickness is thin, the outside diameter of cable is little, lightweight, flexibility good, ampacity is large, do not have reactive power and do not have AC magnetic field, so be widely used in the naval vessel and the place is used in common land.
Chinese patent notification number CN201796633U discloses a kind of heavy in section direct current cables, comprises conductor, and conductor is enclosed with the isolation strip, the isolation strip skin is enclosed with insulating barrier, the insulating barrier skin is enclosed with inner covering, and the inner covering skin is enclosed with belting layer, and belting layer is wrapped with oversheath.Its conductor adopts the circular stranded soft copper conductor that presses, and suppleness is enhanced, and 5～6 times of bending coefficients are fit to the long distance of cable and lay; Belting layer is the overlapping inhibiting tape of two-layer low smoke and zero halogen, can be effectively fire-retardant, and the inflammable source of dual resisteance.But it uses electric pressure to be 1500V, and does not have semiconductive shielding layer inside and outside the insulating barrier, can not satisfy 5000V and above voltage user demand.
Chinese patent notification number CN201812526U discloses a kind of ethylene propylene rubber insulated direct-current cable, comprise core, core is wrapped with insulating barrier, many cores consist of wire, wire is wrapped with belting layer, is filled with the non-hygroscopic fire proofing between belting layer and the insulating barrier, and belting layer is wrapped with inner covering, inner covering is wrapped with armour, and armour is wrapped with oversheath.Insulating barrier adopts ethylene-propylene rubber, and inner covering is the LSOH anti-flaming material, and oversheath adopts polyolefine material, and the quantity of core is at least one.Do not have semiconductive shielding layer inside and outside its insulating barrier, when moving under 5000V and above voltage, electric field can not get homogenizing, can't guarantee the safe operation of cable.
Summary of the invention
The objective of the invention is for the deficiencies in the prior art, provide that a kind of softness is excellent, capability of electromagnetic shielding is excellent, environmental protection, electric property are safe and reliable, the insulation DC electric cable of long service life.
For realizing above-mentioned technical purpose, the present invention by the following technical solutions: a kind of insulation DC electric cable, be provided with successively from inside to outside conductor, insulating barrier, metal screen layer, lapping layer and an oversheath, wherein:
Also be provided with semiconductive lapped shielding layer A, semiconductive shielding layer A, semiconductive shielding layer B and semiconductive lapped shielding layer B;
The wrapped described conductor of semiconductive lapped shielding layer A, semiconductive shielding layer A extrudes semiconductive lapped shielding layer A, described insulating barrier extrudes semiconductive shielding layer A, semiconductive shielding layer B extrudes described insulating barrier, the wrapped semiconductive shielding layer B of semiconductive lapped shielding layer B, described metal screen layer coat semiconductive lapped shielding layer B;
Described conductor, semiconductive lapped shielding layer A, semiconductive shielding layer A, described insulating barrier, semiconductive shielding layer B, semiconductive lapped shielding layer B and described metal screen layer consist of core, the wrapped core of lapping layer.
Further, described insulating barrier is the insulating barrier that ethylene-propylene rubber consists of.
Further again, described semiconductive lapped shielding layer A and semiconductive lapped shielding layer B all are the fabric strips that scribble the semiconductive colloid; Described semiconductive shielding layer A and semiconductive shielding layer B all are semiconductive shielding layers that the semiconductive colloid consists of.
Further again, described lapping layer is the Halogen band; Described conductor is the zinc-plated soft round copper conductors of six classes.
Further again, described metal screen layer is tincopper fuse wire braided armor; Described oversheath is the low-smoke non-halogen flame-retardant cross-linked polyolefin.
Further, at least two of described cores also are provided with filler, and core and filler are twisted into cable core, the wrapped cable core of described lapping layer.
Further again, described insulating barrier is the insulating barrier that ethylene-propylene rubber consists of.
Further again, described semiconductive lapped shielding layer A and semiconductive lapped shielding layer B all are the fabric strips that scribble the semiconductive colloid; Described semiconductive shielding layer A and semiconductive shielding layer B all are semiconductive shielding layers that the semiconductive colloid consists of.
Further again, described lapping layer is the Halogen band; Described conductor is the zinc-plated soft round copper conductors of six classes.
Further again, described metal screen layer is tincopper fuse wire braided armor; Described oversheath is the low-smoke non-halogen flame-retardant cross-linked polyolefin.
After adopting technique scheme, the present invention has following beneficial effect:
(1) two-layer semiconductive lapped shielding layer and two-layer semiconductive shielding layer combination makes electric field obtain abundant homogenizing, and is safe and reliable during the insulation DC electric cable operation, and Stability Analysis of Structures, easy to process.
(2) the preferred ethylene-propylene rubber of insulating barrier makes cable have excellent electric property and anti-space charge performance, can long-time running use, and performance safety is reliable, and long service life is difficult for being punctured by electric charge.
(3) the semiconductive lapped shielding layer adopts the fabric strip that scribbles the semiconductive colloid, and the semiconductive shielding layer that semiconductive shielding layer adopts the semiconductive colloid to consist of is further enhanced the uniformity of electric field.
(4) lapping layer adopts the Halogen band, makes cable low-smoke and flame retardant low toxicity, environmental protection.Conductor adopts the zinc-plated soft round copper conductor of six classes to make cable have excellent non-oxidizability, flexibility.
(5) metal screen layer adopts tincopper fuse wire braided armor, make cable itself have excellent capability of electromagnetic shielding, the electromagnetic field that guarantees self does not have interference to external world, eliminate simultaneously external electromagnetic field to the interference of cable itself, improve the useful life of cable and have excellent non-oxidizability and flexibility.
(6) oversheath adopts the low-smoke non-halogen flame-retardant cross-linked polyolefin, make cable hang down cigarette, Halogen, low toxicity, fire-retardant, oil resistant is dirty, salt spray resistance, humidity, softness, long service life, environmental protection.
(7) adopt multi-thread cored structure, when guaranteeing properties, make cable more soft.And can foundation need to process the insulation DC electric cable that is fit to voltage request, easy to process.
(8) filling of the present invention, lapping layer, oversheath all satisfy the environmental-protecting performance requirement, environmental protection, and fire-retardant, fail safe is good.
Therefore, flexibility of the present invention is good, and electromagnetic wave shielding is good, environmental protection, and performance safety is reliable, long service life.
Description of drawings
Fig. 1 is the first structural representation of the present invention;
Fig. 2 is the second structural representation of the present invention.
Among the figure: 1, conductor, 2, semiconductive lapped shielding layer A, 3, semiconductive shielding layer A, 4, insulating barrier, 5, semiconductive shielding layer B, 6, semiconductive lapped shielding layer B, 7, metal screen layer, 8, lapping layer, 9, oversheath, 10, core, 11, filler, 12, cable core.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment one
As shown in Figure 1, a kind of insulation DC electric cable is provided with a conductor 1, semiconductive lapped shielding layer A2, semiconductive shielding layer A3, insulating barrier 4, semiconductive shielding layer B5, semiconductive lapped shielding layer B6, metal screen layer 7, lapping layer 8 and oversheath 9 from inside to outside successively.
The wrapped conductor 1 of semiconductive lapped shielding layer A2, semiconductive shielding layer A3 extrudes semiconductive lapped shielding layer A2, insulating barrier 4 extrudes semiconductive shielding layer A3, semiconductive shielding layer B5 extruded insulation layer 4, the wrapped semiconductive shielding layer B5 of semiconductive lapped shielding layer B6, metal screen layer 7 coats semiconductive lapped shielding layer B6.
Conductor 1, semiconductive lapped shielding layer A2, semiconductive shielding layer A3, insulating barrier 4, semiconductive shielding layer B5, semiconductive lapped shielding layer B6 and described metal screen layer 7 consist of core 10.
Lapping layer 8 wrapped cores 10, oversheath 9 extrudes lapping layer 8.
If semiconductive lapped shielding layer A2, semiconductive shielding layer A3, semiconductive shielding layer B5 and semiconductive lapped shielding layer B6 make electric field obtain abundant homogenizing, safe and reliable during the insulation DC electric cable operation, be improved useful life, and Stability Analysis of Structures, easy to process.
The insulating barrier that insulating barrier 4 preferred ethylene-propylene rubber consist of.Its heat resisting temperature reaches 125 ℃, and softness is superior, is applicable to limited space, the demanding occasion of Cable Bending Radius, as: the naval vessel.
Semiconductive lapped shielding layer A2 and semiconductive lapped shielding layer B6 all preferably scribble the fabric strip of semiconductive colloid; Semiconductive shielding layer A3 and semiconductive shielding layer B5 be the semiconductive shielding layer of preferred semiconductive colloid formation all.Technique scheme is further enhanced the homogenization degree of electric field.
Lapping layer 8 preferred Halogen bands make cable low-smoke non-halogen flame-retardant low toxicity.
The zinc-plated soft round copper conductor of conductor 1 preferred six classes, above-mentioned conductor make the cable flexibility excellent, and excellent in oxidation resistance.
Oversheath 9 preferred low-smoke non-halogen flame-retardant cross-linked polyolefins, make cable hang down cigarette, Halogen, low toxicity, fire-retardant, oil resistant is dirty, salt spray resistance, humidity, long service life.
Its insulation and oversheath all have excellent environmental-protecting performance.
After adopting technique scheme, the present invention compares with cable with common land, and its flexibility is excellent.Only need common land to use cable 1/4 space when crooked.Be applicable to the places such as naval vessel fully, also be applicable to common land and use the place.
Embodiment two
As shown in Figure 2, a kind of insulation DC electric cable, embodiment two and embodiment one difference: a kind of insulation DC electric cable comprises at least two conductors 1.At this technical scheme is described as an example of three conductors 1 example.
Every conductor 1 is outer by interior and peripheral hardware semiconductive lapped shielding layer A2, semiconductive shielding layer A3, insulating barrier 4, semiconductive shielding layer B5, semiconductive lapped shielding layer B6, metal screen layer 7.
Conductor 1, semiconductive lapped shielding layer A2, semiconductive shielding layer A3, insulating barrier 4, semiconductive shielding layer B5, semiconductive lapped shielding layer B6, metal screen layer 7 consist of core 10.
Three cores 10 and filler 11 are twisted into cable core 12.
Lapping layer 8 wrapped cable cores 12, oversheath 9 extrudes lapping layer 8.
Filling and oversheath all adopt the cross-linked polyolefin of low-smoke non-halogen flame-retardant low toxicity, and its insulation, filling and oversheath all have excellent environmental-protecting performance.
Embodiment two further features are identical with embodiment one.
The invention is not restricted to above-described embodiment, the technical scheme that all employings are equal to or the equivalence replacement forms all falls into the protection range that the present invention requires.
Claims (10)
1. an insulation DC electric cable is provided with a conductor (1), insulating barrier (4), metal screen layer (7), lapping layer (8) and oversheath (9) from inside to outside successively, it is characterized in that:
Also be provided with semiconductive lapped shielding layer A(2), semiconductive shielding layer A(3), semiconductive shielding layer B(5) and semiconductive lapped shielding layer B(6);
Semiconductive lapped shielding layer A(2) wrapped described conductor (1), semiconductive shielding layer A(3) extrudes semiconductive lapped shielding layer A(2), described insulating barrier (4) extrudes semiconductive shielding layer A(3), semiconductive shielding layer B(5) extrudes described insulating barrier (4), semiconductive lapped shielding layer B(6) wrapped semiconductive shielding layer B(5), described metal screen layer (7) coats semiconductive lapped shielding layer B(6);
Described conductor (1), semiconductive lapped shielding layer A(2), semiconductive shielding layer A(3), described insulating barrier (4), semiconductive shielding layer B(5), semiconductive lapped shielding layer B(6) and described metal screen layer (7) consist of core (10), the wrapped core of lapping layer (8) (10).
2. a kind of insulation DC electric cable according to claim 1 is characterized in that: described insulating barrier (4) is the insulating barrier that ethylene-propylene rubber consists of.
3. a kind of insulation DC electric cable according to claim 2 is characterized in that: described semiconductive lapped shielding layer A(2) and semiconductive lapped shielding layer B(6) all are the fabric strips that scribble the semiconductive colloid; Described semiconductive shielding layer A(3) and semiconductive shielding layer B(5) all are semiconductive shielding layers that the semiconductive colloid consists of.
4. a kind of insulation DC electric cable according to claim 3, it is characterized in that: described lapping layer (8) is the Halogen band; Described conductor (1) is the zinc-plated soft round copper conductors of six classes.
5. a kind of insulation DC electric cable according to claim 4, it is characterized in that: described metal screen layer (7) is tincopper fuse wire braided armor; Described oversheath (9) is the low-smoke non-halogen flame-retardant cross-linked polyolefin.
6. a kind of insulation DC electric cable according to claim 1, it is characterized in that: (10) at least two of described cores, also be provided with filler (11), core (10) and filler (11) are twisted into cable core (12), the wrapped cable core of described lapping layer (8) (12).
7. a kind of insulation DC electric cable according to claim 6 is characterized in that: described insulating barrier (4) is the insulating barrier that ethylene-propylene rubber consists of.
8. a kind of insulation DC electric cable according to claim 7 is characterized in that: described semiconductive lapped shielding layer A(2) and semiconductive lapped shielding layer B(6) all are the fabric strips that scribble the semiconductive colloid; Described semiconductive shielding layer A(3) and semiconductive shielding layer B(5) all are semiconductive shielding layers that the semiconductive colloid consists of.
9. a kind of insulation DC electric cable according to claim 8, it is characterized in that: described lapping layer (8) is the Halogen band; Described conductor (1) is the zinc-plated soft round copper conductors of six classes.
10. a kind of insulation DC electric cable according to claim 9, it is characterized in that: described metal screen layer (7) is tincopper fuse wire braided armor; Described oversheath (9) is the low-smoke non-halogen flame-retardant cross-linked polyolefin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110297585 CN103035336A (en) | 2011-09-29 | 2011-09-29 | Direct current power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110297585 CN103035336A (en) | 2011-09-29 | 2011-09-29 | Direct current power cable |
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| Publication Number | Publication Date |
|---|---|
| CN103035336A true CN103035336A (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110297585 Pending CN103035336A (en) | 2011-09-29 | 2011-09-29 | Direct current power cable |
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| CN (1) | CN103035336A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105005125A (en) * | 2015-07-02 | 2015-10-28 | 上海金丰电缆有限公司 | Optical cable and optical cable composite cable |
| CN110709948A (en) * | 2017-06-22 | 2020-01-17 | Ls电线有限公司 | DC power cable |
-
2011
- 2011-09-29 CN CN 201110297585 patent/CN103035336A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105005125A (en) * | 2015-07-02 | 2015-10-28 | 上海金丰电缆有限公司 | Optical cable and optical cable composite cable |
| CN110709948A (en) * | 2017-06-22 | 2020-01-17 | Ls电线有限公司 | DC power cable |
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Application publication date: 20130410 |