CN203931605U - A kind of power cable structure that comprises a plurality of cable cores - Google Patents
A kind of power cable structure that comprises a plurality of cable cores Download PDFInfo
- Publication number
- CN203931605U CN203931605U CN201420182026.8U CN201420182026U CN203931605U CN 203931605 U CN203931605 U CN 203931605U CN 201420182026 U CN201420182026 U CN 201420182026U CN 203931605 U CN203931605 U CN 203931605U
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- Prior art keywords
- cable
- protective sleeve
- cable cores
- cores
- recess
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Abstract
The utility model relates to a kind of power cable structure that comprises a plurality of cable cores; comprise a plurality of cable cores; each cable core comprises a conductor and an insulation system; a plurality of cable cores are encased by a protective sleeve; two or more volume passages are formed between two adjacent cable cores and the corresponding mid portion of protective sleeve, and the pars intermedia office of protective sleeve between at least some cable cores has towards inner recess.In protective sleeve outer setting, have filler and be full of recess completely, a pressure armor entangles protective sleeve and filler, and recess top is adjacent is provided with longitudinal film; outside at cable further comprises protective layer and reinforced layer; wherein, longitudinally film has fold, in volume passage, is full of insulating oil.The technical solution of the utility model can reduce the capacity of the insulating oil of filling cable internal protection cover below, thereby reduces the risk that cable leaks the environmental nuisance that may cause.
Description
Technical field
The utility model relates to a kind of power cable that comprises a plurality of cable cores.
Background technology
Power cable is oil-filled cable normally, and a plurality of cable cores are arranged in a flat structure, and below longitudinally volume passage overlaps the lead that is present in cable.Longitudinally in volume passage, be full of insulating oil.Insulating oil in the free volume of cable passage under pressure.When the load of cable or the temperature of soil change while causing oily pressure to replace, the construction of cable allows cable expand or dwindle.May be within the scope of 0.5-6bar normal pressure in the variation aspect oil pressure.
The size of cable is selected according to the capacitance of cable.And the increase of cable dimension causes the increase of cable core diameter, and then, the increase of oily channel volume caused.This means that the oil mass in cable increases.The length of the power cable in seabed may be very long, for example 200 kilometers or more.If there is a cable, leak, the insulating oil of a large amount of cable inside can form potential environmental risk.Therefore, need to reduce the amount of cable built-in electrical insulation oil as far as possible, thereby once reduce the risk that the pollution that may cause environment occurs to leak cable.
Summary of the invention
Technical problem to be solved in the utility model is how to reduce the oil-filled amount in volume passage in power cable.The utility model provides a kind of power cable for this reason, comprise a plurality of cable cores, described in each, cable core comprises a conductor and an insulation system, described a plurality of cable core is encased by a protective sleeve, two or more volume passages are formed between two adjacent described cable cores and the corresponding mid portion of described protective sleeve, it is characterized in that: described protective sleeve described pars intermedia office between cable core described at least some has towards inner recess, in described protective sleeve outer setting, there is filler and be full of described recess completely, one pressure armor entangles described protective sleeve and described filler, described recess top is adjacent is provided with longitudinal film, outside at described cable further comprises protective layer and reinforced layer, wherein, described longitudinal film has fold, in described volume passage, be full of insulating oil.
Preferably, wherein said longitudinal film is arranged on the inside of described pressure armor.
Preferably, wherein said longitudinal film is arranged on the outside of described pressure armor.
Preferably, wherein said insulating oil has high viscosity.
By recess is set on protective sleeve, the oil-filled amount in volume passage reduces; Further use heavy oil, if cable is damaged, speed and quantity that oil leaks out from cable can be lowered, thereby environmental pollution can be lowered.
Accompanying drawing explanation
The cross-sectional illustration of Fig. 1 the utility model the first preferred embodiment.
The cross-sectional illustration of Fig. 2 the utility model the second preferred embodiment.
The cross-sectional illustration of Fig. 3 the utility model the 3rd preferred embodiment.
Embodiment
As shown in Figure 1, high-tension cable comprises two each and every one cable cores 1, and each cable core 1 comprises the conductor 2 that conducts load current, and insulation system 3 is arranged on conductor 2 around.Cable core 1 is set up in parallel, and is wound one of cable core 1 plumbous cover 4 and surrounds, thus below lead cover 4 and produce two volume passages 5 between two cable cores 1.
In volume passage 5, be full of insulating oil.On the mid portion 4a of lead cover 4, flat-top and bottom surface thereof, be provided with recess 6.At lead, overlap 4 interior notches 6 and be filled thing 7 fillings, and install pressure armor 9 additional to be wound around the mode of plumbous cover 4 and filler 7.Filler 7 outsides on mid portion 4a, are provided with the longitudinal film 8 of one deck, and film 8 has fold, and while guaranteeing the variation when soil and operating temperature with this, cable can correspondingly expand or dwindle.When high the or soil moisture of load is high, insulating oil is by the pressure increasing in volume passage 5, and cable will expand.Owing to having the existence of the film 8 of fold, when load or temperature reduce, thereby mid portion 4a will be applied in an elastic force load and cause the contraction of cable.In pressure armor 9 outsides, further comprise that protection and reinforced layer are for reaching the desired stability of cable and durability.
As shown in Figure 2, the embodiment in its construction of cable and Fig. 1 is basic identical, and the degree of depth of different is recess 6 is larger, and longitudinally film 8 is arranged on the outside of armor 9.
Shown in Fig. 3, three cable cores 1 are arranged side by side in high voltage power cable.Can produce so more volume passage 5.By the part 4a place in the middle of two cable cores 1 at protective sleeve 4, recess 6 is set, the volume of passage 5 is greatly reduced.
Evidence, by using full-bodied insulating oil, when cable is damaged, insulating oil leaks the infringement meeting causing to be reduced greatly.
Claims (3)
1. a power cable structure that comprises a plurality of cable cores, comprise a plurality of cable cores (1), cable core described in each (1) comprises a conductor (2) and an insulation system (3), described a plurality of cable core (1) is encased by a protective sleeve (4), two or more volume passages (5) are formed between two adjacent described cable cores (1) and the corresponding mid portion (4a) of described protective sleeve (4), it is characterized in that: described protective sleeve (4) described mid portion (4a) between cable core (1) described at least some is located to have towards inner recess (6), in described protective sleeve (4) outer setting, there is filler (7) and be full of described recess (6) completely, one pressure armor (9) entangles described protective sleeve (4) and described filler (7), the adjacent longitudinal film (8) that is provided with in described recess (6) top, outside at described cable further comprises protective layer and reinforced layer, wherein, described longitudinal film (8) has fold, in described volume passage (5), be full of insulating oil.
2. a kind of power cable structure that comprises a plurality of cable cores according to claim 1, is characterized in that: described longitudinal film (8) is arranged on the inside of described pressure armor (9).
3. a kind of power cable structure that comprises a plurality of cable cores according to claim 1, is characterized in that: described longitudinal film (8) is arranged on the outside of described pressure armor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420182026.8U CN203931605U (en) | 2014-04-08 | 2014-04-08 | A kind of power cable structure that comprises a plurality of cable cores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420182026.8U CN203931605U (en) | 2014-04-08 | 2014-04-08 | A kind of power cable structure that comprises a plurality of cable cores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203931605U true CN203931605U (en) | 2014-11-05 |
Family
ID=51827378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420182026.8U Expired - Fee Related CN203931605U (en) | 2014-04-08 | 2014-04-08 | A kind of power cable structure that comprises a plurality of cable cores |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203931605U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10283238B1 (en) | 2018-03-19 | 2019-05-07 | Te Connectivity Corporation | Electrical cable |
| US10283240B1 (en) | 2018-03-19 | 2019-05-07 | Te Connectivity Corporation | Electrical cable |
| US10304592B1 (en) | 2018-03-19 | 2019-05-28 | Te Connectivity Corporation | Electrical cable |
| US10600537B1 (en) | 2018-10-12 | 2020-03-24 | Te Connectivity Corporation | Electrical cable |
| US10600536B1 (en) | 2018-10-12 | 2020-03-24 | Te Connectivity Corporation | Electrical cable |
| US10741308B2 (en) | 2018-05-10 | 2020-08-11 | Te Connectivity Corporation | Electrical cable |
| US10950367B1 (en) | 2019-09-05 | 2021-03-16 | Te Connectivity Corporation | Electrical cable |
| US11069458B2 (en) | 2018-04-13 | 2021-07-20 | TE Connectivity Services Gmbh | Electrical cable |
| US12087465B2 (en) | 2018-10-12 | 2024-09-10 | Te Connectivity Solutions Gmbh | Electrical cable |
-
2014
- 2014-04-08 CN CN201420182026.8U patent/CN203931605U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10283238B1 (en) | 2018-03-19 | 2019-05-07 | Te Connectivity Corporation | Electrical cable |
| US10283240B1 (en) | 2018-03-19 | 2019-05-07 | Te Connectivity Corporation | Electrical cable |
| US10304592B1 (en) | 2018-03-19 | 2019-05-28 | Te Connectivity Corporation | Electrical cable |
| US11069458B2 (en) | 2018-04-13 | 2021-07-20 | TE Connectivity Services Gmbh | Electrical cable |
| US10741308B2 (en) | 2018-05-10 | 2020-08-11 | Te Connectivity Corporation | Electrical cable |
| US10600537B1 (en) | 2018-10-12 | 2020-03-24 | Te Connectivity Corporation | Electrical cable |
| US10600536B1 (en) | 2018-10-12 | 2020-03-24 | Te Connectivity Corporation | Electrical cable |
| US12087465B2 (en) | 2018-10-12 | 2024-09-10 | Te Connectivity Solutions Gmbh | Electrical cable |
| US10950367B1 (en) | 2019-09-05 | 2021-03-16 | Te Connectivity Corporation | Electrical cable |
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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: 20141105 Termination date: 20150408 |
|
| EXPY | Termination of patent right or utility model |