CN202258528U - DC power cable - Google Patents
DC power cable Download PDFInfo
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- CN202258528U CN202258528U CN 201120368306 CN201120368306U CN202258528U CN 202258528 U CN202258528 U CN 202258528U CN 201120368306 CN201120368306 CN 201120368306 CN 201120368306 U CN201120368306 U CN 201120368306U CN 202258528 U CN202258528 U CN 202258528U
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- power cable
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Abstract
The utility model relates to a power cable, especially to a DC power cable. The DC power cable is provided with a conductor (1), an insulating layer (4), a metal shielding layer (7), a wrapping layer (8) and an outer sheath (9) together arranged from inside to outside successively. The DC power cable is also provided with a semi-conductive wrapping shielding layer A (2), a semi-conductive shielding layer A (3), a semi-conductive shielding layer B (5) and a semi-conductive wrapping shielding layer B (6). The semi-conductive wrapping shielding layer A (2) wraps the conductor (1). The semi-conductive shielding layer A (3) wraps the semi-conductive wrapping shielding layer A (2) in an extruding manner. The insulating layer (4) wraps the semi-conductive shielding layer A (3) in an extruding manner. The semi-conductive shielding layer B (5) wraps the insulating layer (4) in an extruding manner. The semi-conductive wrapping shielding layer B (6) wraps the semi-conductive shielding layer B (5). The metal shielding layer (7) wraps the semi-conductive wrapping shielding layer B (6). The DC power cable in the utility model has characteristics of excellent flexibility, excellent electromagnetic shielding capacity, safe and reliable performance and long service lifetime. The DC power cable in the utility model is environment friendly.
Description
Technical field
The utility model relates to a kind of power cable, and particularly a kind of direct current power cable is applicable to rated voltage more than 5000V reaches, and it also can be used for common land and use power cable mainly as the warship ship power cable.
Background technology
Power cable can be divided into direct current power cable and ac power cable by the difference of transmission current.There are many advantages in the direct current power cable by contrast; Low like line cost, line loss is little, the applied electric field intensity of insulation is high, insulation thickness thin, the outside diameter of cable is little, in light weight, flexibility is good, ampacity is big, 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 isolation.But its working voltage grade is 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 cables, comprises core, and core is wrapped with insulating barrier; Many cores constitute lead; Lead 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 under 5000V and above voltage, moving, electric field can not get homogenizing, can't guarantee the safe operation of cable.
Summary of the invention
The purpose of the utility model is the deficiency to prior art, provides that a kind of softness is excellent, capability of electromagnetic shielding is excellent, environmental protection, electric property are safe and reliable, the direct current power cable of long service life.
For realizing above-mentioned technical purpose, the utility model adopts following technical scheme: a kind of direct current power cable, be provided with conductor, insulating barrier, metal screen layer, lapping layer and an oversheath from inside to outside successively, 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 said conductor of semiconductive lapped shielding layer A; Semiconductive shielding layer A extrudes semiconductive lapped shielding layer A; Said insulating barrier extrudes semiconductive shielding layer A; Semiconductive shielding layer B extrudes said insulating barrier, and the wrapped semiconductive shielding layer B of semiconductive lapped shielding layer B, said metal screen layer coat semiconductive lapped shielding layer B;
Said conductor, semiconductive lapped shielding layer A, semiconductive shielding layer A, said insulating barrier, semiconductive shielding layer B, semiconductive lapped shielding layer B and said metal screen layer constitute core, the wrapped core of lapping layer.
Further, said insulating barrier is the insulating barrier that ethylene-propylene rubber constitutes.
Further again, said semiconductive lapped shielding layer A and semiconductive lapped shielding layer B all are the fabric strips that scribble the semiconductive colloid; Said semiconductive shielding layer A and semiconductive shielding layer B all are semiconductive shielding layers that the semiconductive colloid constitutes.
Further again, said lapping layer is the Halogen band; Said conductor is six types of zinc-plated soft round copper conductors.
Further again, said metal screen layer is a tincopper fuse wire braided armor; Said oversheath is the low-smoke non-halogen flame-retardant cross-linked polyolefin.
Further, at least two of said cores also are provided with filler, and core and filler are twisted into cable core, the wrapped cable core of said lapping layer.
Further again, said insulating barrier is the insulating barrier that ethylene-propylene rubber constitutes.
Further again, said semiconductive lapped shielding layer A and semiconductive lapped shielding layer B all are the fabric strips that scribble the semiconductive colloid; Said semiconductive shielding layer A and semiconductive shielding layer B all are semiconductive shielding layers that the semiconductive colloid constitutes.
Further again, said lapping layer is the Halogen band; Said conductor is six types of zinc-plated soft round copper conductors.
Further again, said metal screen layer is a tincopper fuse wire braided armor; Said oversheath is the low-smoke non-halogen flame-retardant cross-linked polyolefin.
After adopting technique scheme, the utlity model 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 operation of direct current power cable, 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 is safe and 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 constitute 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 six types of zinc-plated soft round copper conductors 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 the interference of external electromagnetic field simultaneously, improve the useful life of cable and have excellent non-oxidizability and flexibility cable itself.
(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 each item performance, make cable more soft.And can foundation need to process the direct current power cable that is fit to voltage request, easy to process.
(8) filling of the utility model, lapping layer, oversheath all satisfy the environmental-protecting performance requirement, environmental protection, and fire-retardant, fail safe is good.
Therefore, the utility model flexibility is good, and electromagnetic wave shielding is good, environmental protection, and performance is safe and reliable, long service life.
Description of drawings
Fig. 1 is first kind of structural representation of the utility model;
Fig. 2 is second kind of structural representation of the utility model.
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 accompanying drawing and specific embodiment, the utility model is done further explain.
Embodiment one
As shown in Figure 1; A kind of direct current power 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 said metal screen layer 7 constitute 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 operation of direct current power cable, be improved useful life, and Stability Analysis of Structures, easy to process.
The insulating barrier that insulating barrier 4 preferred ethylene-propylene rubber constitute.Its heat resisting temperature reaches 125 ℃, and softness is superior, is applicable to that the space is limited, 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; The semiconductive shielding layer that all preferred semiconductive colloid of semiconductive shielding layer A3 and semiconductive shielding layer B5 constitutes.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.
Conductor 1 preferred six types of zinc-plated soft round copper conductors, 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 utility model is compared with cable with common land, and its flexibility is excellent.Only need common land with cable 1/4 space when crooked.Be applicable to places such as naval vessel fully, be applicable to that also common land uses the place.
Embodiment two
As shown in Figure 2, a kind of direct current power cable, embodiment two and embodiment one difference: a kind of direct current power cable comprises at least two conductors 1.Is example explanation technical scheme at this with three conductors 1.
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 constitute core 10.
Three cores 10 are twisted into cable core 12 with filler 11.
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 utility model is not limited to the foregoing description, and the technical scheme that all employings are equal to or the equivalence replacement forms all falls into the protection range that the utility model requires.
Claims (10)
1. a direct current power 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);
The wrapped said conductor of semiconductive lapped shielding layer A (2) (1); Semiconductive shielding layer A (3) extrudes semiconductive lapped shielding layer A (2); Said insulating barrier (4) extrudes semiconductive shielding layer A (3); Semiconductive shielding layer B (5) extrudes said insulating barrier (4), the wrapped semiconductive shielding layer B of semiconductive lapped shielding layer B (6) (5), and said metal screen layer (7) coats semiconductive lapped shielding layer B (6);
Said conductor (1), semiconductive lapped shielding layer A (2), semiconductive shielding layer A (3), said insulating barrier (4), semiconductive shielding layer B (5), semiconductive lapped shielding layer B (6) and said metal screen layer (7) constitute core (10), the wrapped core of lapping layer (8) (10).
2. a kind of direct current power cable according to claim 1 is characterized in that: said insulating barrier (4) is the insulating barrier that ethylene-propylene rubber constitutes.
3. a kind of direct current power cable according to claim 2 is characterized in that: said semiconductive lapped shielding layer A (2) and semiconductive lapped shielding layer B (6) all are the fabric strips that scribble the semiconductive colloid; Said semiconductive shielding layer A (3) and semiconductive shielding layer B (5) all are semiconductive shielding layers that the semiconductive colloid constitutes.
4. a kind of direct current power cable according to claim 3 is characterized in that: said lapping layer (8) is the Halogen band; Said conductor (1) is six types of zinc-plated soft round copper conductors.
5. a kind of direct current power cable according to claim 4 is characterized in that: said metal screen layer (7) is a tincopper fuse wire braided armor; Said oversheath (9) is the low-smoke non-halogen flame-retardant cross-linked polyolefin.
6. a kind of direct current power cable according to claim 1; It is characterized in that: (10) at least two of said cores; Also be provided with filler (11), core (10) and filler (11) are twisted into cable core (12), the wrapped cable core of said lapping layer (8) (12).
7. a kind of direct current power cable according to claim 6 is characterized in that: said insulating barrier (4) is the insulating barrier that ethylene-propylene rubber constitutes.
8. a kind of direct current power cable according to claim 7 is characterized in that: said semiconductive lapped shielding layer A (2) and semiconductive lapped shielding layer B (6) all are the fabric strips that scribble the semiconductive colloid; Said semiconductive shielding layer A (3) and semiconductive shielding layer B (5) all are semiconductive shielding layers that the semiconductive colloid constitutes.
9. a kind of direct current power cable according to claim 8 is characterized in that: said lapping layer (8) is the Halogen band; Said conductor (1) is six types of zinc-plated soft round copper conductors.
10. a kind of direct current power cable according to claim 9 is characterized in that: said metal screen layer (7) is a tincopper fuse wire braided armor; Said oversheath (9) is the low-smoke non-halogen flame-retardant cross-linked polyolefin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120368306 CN202258528U (en) | 2011-09-29 | 2011-09-29 | DC power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120368306 CN202258528U (en) | 2011-09-29 | 2011-09-29 | DC power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202258528U true CN202258528U (en) | 2012-05-30 |
Family
ID=46119736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120368306 Expired - Lifetime CN202258528U (en) | 2011-09-29 | 2011-09-29 | DC power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202258528U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751033A (en) * | 2012-07-27 | 2012-10-24 | 山东华凌电缆有限公司 | Variable frequency cable for transformer station |
| CN103854771A (en) * | 2014-02-24 | 2014-06-11 | 安徽卓越电缆有限公司 | Direct-current electric wire |
| CN105427922A (en) * | 2015-12-18 | 2016-03-23 | 江苏上上电缆集团有限公司 | High-voltage direct current cable and manufacturing method and insulation material therefor |
-
2011
- 2011-09-29 CN CN 201120368306 patent/CN202258528U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751033A (en) * | 2012-07-27 | 2012-10-24 | 山东华凌电缆有限公司 | Variable frequency cable for transformer station |
| CN102751033B (en) * | 2012-07-27 | 2014-10-08 | 山东华凌电缆有限公司 | Variable frequency cable for transformer station |
| CN103854771A (en) * | 2014-02-24 | 2014-06-11 | 安徽卓越电缆有限公司 | Direct-current electric wire |
| CN105427922A (en) * | 2015-12-18 | 2016-03-23 | 江苏上上电缆集团有限公司 | High-voltage direct current cable and manufacturing method and insulation material therefor |
| CN105427922B (en) * | 2015-12-18 | 2017-04-26 | 江苏上上电缆集团有限公司 | Manufacturing method of high-voltage direct current cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |