CN102867593B - Full-water-blocking sea power cable - Google Patents
Full-water-blocking sea power cable Download PDFInfo
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- CN102867593B CN102867593B CN201210393750.0A CN201210393750A CN102867593B CN 102867593 B CN102867593 B CN 102867593B CN 201210393750 A CN201210393750 A CN 201210393750A CN 102867593 B CN102867593 B CN 102867593B
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Abstract
The invention provides a full-water-blocking sea power cable which sequentially comprises a twisted conductor, a semi-conducting water blocking belt, a conductor shielding layer, an insulating layer, an insulating shielding layer, a lead sleeve, a non-metal sheath, an anti-corrosion layer, a steel wire armoring layer and an outer covering layer from inside to outside. Electricity-conducting sealing glue is filling in gaps of the twisted conductor, the sealing glue is prepared by mixing butyl rubber and carbon black, and a semi-conducting buffer layer for blocking water is arranged between the insulating shielding layer and the lead sleeve. The sea power cable can achieve effective and reliable longitudinal water blocking.
Description
Technical field
The present invention relates to a kind of water repellent electric cable, particularly relate to one and entirely to block water sea electric power cable, belong to sea electric power cable technical field.
Background technology
Sea electric power cable is owing to being arranged on the seabed of circumstance complication, be subject to the impact of sea beat, seawater corrosion and many X factors for a long time, its design, manufacture and installation requirement are all far away higher than common cable, and sea electric power cable determines the length in its useful life to a great extent for the effect quality blocked water.Usually, sea electric power cable all adopts the sheath of resistance effect such as lead cover etc. to realize radial water-resisting, but although this method can solve radial leakage water problem effectively, but due to External Force Acting, this sheath may sustain damage, the gap longitudinal diffusion that water can exist in cable, the cable quite grown can not be used, when cable needs to repair owing to leaking, in order to reduce the loss, wish that the length that this section leaks is shorter as far as possible, therefore, for sea electric power cable, be necessary very much the design carrying out longitudinal water-blocking.
At present, the longitudinal water-blocking of sea electric power cable conductor mainly relies on and between each twisted layer of conductor, adds water-proofing powder or water blocking yarn realizes.Owing to adding water-proofing powder complex process, be difficult to ensure that it is evenly distributed, more adopt water blocking yarn.Water blocking yarn is normally wrapped between each metal wire stranded layer with certain pitch, again through overcompaction operation, make water blocking yarn embed space between single metal wire by phased manner, and then form " water blocking " structure of discontinuity, instead of successional conductor stop water.Therefore, water blocking yarn structure can not realize sea electric power cable and reliably blocks water.
The cable relating to radial water-resisting is at present more, and the Chinese patent being CN200920318006 as application number discloses a kind of metal compound belt radial water-resisting sea electric power cable, and it does not speak of longitudinal water-blocking at all; And application number to be CN201020288554 disclose a kind of sea electric power cable, it is by waterstop wrapped between the semiconductor waterstop outside insulated wire cores, conductor twisted layer, realizes longitudinally and the sea electric power cable of radial water-resisting.
Application number is that the Chinese patent of CN200810024391 has invented a kind of naval vessel deep-sea cable with direction waterproof characteristic, every root copper wire surface is coated with fluid sealant, with peripheral filling with sealant packed layer composition cable core between each insulating barrier, and this invention is used in cable for ship.
The implementation procedure of the longitudinal water-blocking technology of sea electric power cable is generally as follows: in single line stranding process, adds water-proofing powder or water blocking yarn.When conductor is intake, water-proofing powder or water blocking yarn water-swellable, stop moisture longtitudinal dispersion.For the sea electric power cable of shallow water area, above technology can complete the effect of longitudinal water-blocking preferably.But when sea electric power cable is laid in the seabed of comparatively dark (as being greater than 100m), if sea electric power cable makes conductor intake due to external force breakage, higher hydraulic pressure will be born, before water-proofing powder or water blocking yarn fully expand in time, seawater invades very dark distance along conductor, the object of longitudinal water-blocking cannot reach, and then cause larger economic loss.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide one entirely to block water sea electric power cable, for solving in prior art compared with the insecure problem of abyssal floor power cable longitudinal water-blocking.
For achieving the above object and other relevant objects, the invention provides one entirely to block water sea electric power cable, comprise stranded conductor, semiconductor waterstop, conductor shield, insulating barrier, insulation screen, plumbous cover, non metallic sheath, lumarith, steel wire armor layer and serving from inside to outside successively, conductive fluid sealant is full of in the gap of described stranded conductor, described fluid sealant is mixed by butyl rubber and carbon black, is provided with the resilient coating for blocking water between described insulation screen and plumbous cover.
Preferably, the material of described conductor shield and insulation screen is the mixture of EVA, EBA or EMA and carbon black.
Preferably, the material of described insulating barrier is crosslinked polyethylene.
Preferably, described non metallic sheath material is the one in PVC, PE, chlorosulfonated polyethylene, LDPE, MDPE and HDPE.
Preferably, described lumarith is brass band.
Preferably, described serving is formed by polypropylene rope coating anti-corrosion asphalt.
As mentioned above, the sea electric power cable that entirely blocks water of the present invention, conductive fluid sealant is filled into the gap of stranded conductor, effectively can play the effect of longitudinal water-blocking, and plumbous cover, non metallic sheath, oversheath inherently can play the effect of radial water-resisting, thus cable of the present invention can realize entirely blocking water reliably, when sea electric power cable is intake because of fault, even be subject to the pressure of the hundreds of rice depth of water, seawater also cannot enter cable inside along the gap of conductor, thus realize longitudinal water-blocking, reduce extra large cable and scrap length.
Accompanying drawing explanation
Fig. 1 is shown as the present invention and entirely blocks water the structural representation of sea electric power cable.
Number in the figure explanation
1 conductor
2 fluid sealants
3 semiconductor waterstop
4 conductor shields
5 insulating barriers
6 insulation screens
7 resilient coatings
8 plumbous covers
9 non metallic sheaths
10 lumariths
11 steel wire armor layer
12 servings
Embodiment
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this specification can understand other advantages of the present invention and effect easily.
Refer to Fig. 1.Notice, structure, ratio, size etc. that this specification institute accompanying drawings illustrates, content all only in order to coordinate specification to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the present invention can produce and the object that can reach, still all should drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, quote in this specification as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
The sea electric power cable that entirely blocks water as shown in Figure 1, comprise stranded conductor 1, semiconductor waterstop 3, conductor shield 4, insulating barrier 5, insulation screen 6, plumbous cover 8, non metallic sheath 9, lumarith 10, steel wire armor layer 11 and serving 12 from inside to outside successively, conductive fluid sealant 2 is full of in the gap of stranded conductor 1, fluid sealant 2 is mixed by butyl rubber and carbon black, the semi-conductive buffer layer 7 for blocking water is provided with between insulation screen 6 and plumbous cover 8, fluid sealant 2 fills up the gap between stranded conductor, has good longitudinal water-blocking effect.
Wherein fluid sealant is mixed according to a certain percentage by butyl rubber and carbon black, sealing property is excellent, has enough conductivity simultaneously, and the working temperature when working temperature after butyl rubber and carbon black mix and cable run adapts, carbon black is conduction, can play the effect of homogenizing electric field; And fluid sealant can adopt to be extruded or coating processes, and then fills up the space between conductor, and the compactness of fluid sealant is better, so block-water effect is better.
Conductor 1 is generally copper conductor, and effect is transmission current; Fluid sealant 2, is mixed by butyl rubber and carbon black, and many conductors adopt hot expressing technique to apply conductive fluid sealant respectively, through twisted synthesizing cable, apply fluid sealant again, make fluid sealant be full of gap between many conductors, thus the longitudinal water-blocking effect under higher hydraulic pressure can be realized; Semiconductor waterstop 3, sprinkles carbon black, water-proofing powder etc. by nonwoven fabrics and makes, and effect is longitudinal water-blocking; Conductor shield 4, its material is the mixture (semiconductive material) of EVA, EBA or EMA and carbon black, the shielding of one deck semiconductive material is added at conductive surface, make conductor outside surfaces more level and smooth, be unlikely to stab insulating barrier 5, and the air gap be filled with between conductor 1 and insulating barrier 5, can play homogenizing electric field, prevent the effect of point discharge; Insulating barrier 5, this layer material is generally crosslinked polyethylene (XLPE), and effect is isolated conductor, bears corresponding voltage and prevents current leakage; Insulation screen 6, this layer material and conductor shield 4 material basically identical, it and conductor shield 4, insulating barrier 5 are extruded (three-layer co-extruded) simultaneously, insulating barrier 5 can be avoided by the damage of the lead of outside cover, and insulation screen 6 can guarantee that electric field remains in cable insulation core; Resilient coating 7, material is generally the polymer etc. of superabsorbent water, and effect is that protection insulated wire cores is not damaged by metallic sheath or blocks water; Plumbous cover 8, effect is radial water-resisting, protects its inside cable core, when system is short-circuited, as the passage of short circuit current, also plays the effect of electric field shielding; Non metallic sheath 9, material is as the one in PVC, PE, chlorosulfonated polyethylene, LDPE, MDPE, HDPE etc., and effect provides special electric, mechanical, hot, chemical and environmental protection to the cable of inside; Lumarith 10, material is brass band, and effect is that protection non metallic sheath is not damaged by armour; Steel wire armor layer 11, protection cable is not damaged by external force; Serving 12 applies anti-corrosion asphalt by polypropylene rope and is formed, and prevents sea water intrusion cable.
The beneficial effect of patent of the present invention is: when sea electric power cable is intake because of fault, gap due to stranded conductor is full of conductive fluid sealant, even be subject to the pressure of the hundreds of rice depth of water, seawater also cannot enter cable inside along the gap of conductor, thus realize longitudinal water-blocking, reduce extra large cable and scrap length, save rehabilitation cost.
In sum, the sea electric power cable that entirely blocks water of the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (6)
1. the sea electric power cable that entirely blocks water, comprise stranded conductor (1) from inside to outside successively, semiconductor waterstop (3), conductor shield (4), insulating barrier (5), insulation screen (6), plumbous cover (8), non metallic sheath (9), lumarith (10), steel wire armor layer (11) and serving (12), it is characterized in that, described stranded conductor (1) is for transmission current, conductive fluid sealant (2) is full of in the gap of stranded conductor (1), described fluid sealant (2) is mixed by butyl rubber and carbon black, fluid sealant (2) is for homogenizing electric field and longitudinal water-blocking, the resilient coating (7) for blocking water is provided with between described insulation screen (6) and plumbous cover (8).
2. the sea electric power cable that entirely blocks water according to claim 1, is characterized in that, the material of described conductor shield (4) and insulation screen (6) is the mixture of EVA, EBA or EMA and carbon black.
3. the sea electric power cable that entirely blocks water according to claim 1, is characterized in that, the material of described insulating barrier (5) is crosslinked polyethylene.
4. the sea electric power cable that entirely blocks water according to claim 1, is characterized in that, described non metallic sheath (9) material is the one in PVC, PE, chlorosulfonated polyethylene, LDPE, MDPE and HDPE.
5. the sea electric power cable that entirely blocks water according to claim 1, is characterized in that, described lumarith (10) is brass band.
6. the sea electric power cable that entirely blocks water according to claim 1, is characterized in that, described serving (12) applies anti-corrosion asphalt by polypropylene rope and formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210393750.0A CN102867593B (en) | 2012-10-16 | 2012-10-16 | Full-water-blocking sea power cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210393750.0A CN102867593B (en) | 2012-10-16 | 2012-10-16 | Full-water-blocking sea power cable |
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| CN102867593A CN102867593A (en) | 2013-01-09 |
| CN102867593B true CN102867593B (en) | 2015-01-21 |
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| CN201210393750.0A Active CN102867593B (en) | 2012-10-16 | 2012-10-16 | Full-water-blocking sea power cable |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2505660B (en) * | 2012-09-05 | 2014-12-03 | Bpp Cables Ltd | Subsea cables |
| US9658417B2 (en) | 2013-12-02 | 2017-05-23 | Tyco Electronics Subsea Communications Llc | Conductive water blocking material including metallic particles and an optical cable and method of constructing an optical cable including the same |
| CN106409413A (en) * | 2016-06-08 | 2017-02-15 | 无锡市曙光电缆有限公司 | Cable for pressure-resistant mine |
| CN106128606A (en) * | 2016-08-30 | 2016-11-16 | 无锡江南电缆有限公司 | A kind of crosslinked polyetylene insulated waterproof Anti-termite power cable of copper core |
| CN107342136A (en) * | 2017-06-23 | 2017-11-10 | 中天科技海缆有限公司 | A kind of filled type jacket structure cable |
| CN112133483A (en) * | 2020-09-14 | 2020-12-25 | 重庆泰山电缆有限公司 | Submarine cable conductor and manufacturing method |
| CN113035431A (en) * | 2021-03-02 | 2021-06-25 | 郑缆科技股份有限公司 | High-stability environment-friendly fireproof cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807453A (en) * | 2010-03-29 | 2010-08-18 | 浙江省电力公司舟山电力局 | Power cable for seabed |
| CN202093868U (en) * | 2011-01-05 | 2011-12-28 | 中国电子科技集团公司第二十三研究所 | Dragging watertight cable |
| CN102399521A (en) * | 2010-09-17 | 2012-04-04 | 成都硅宝科技股份有限公司 | Hot melt butyl sealant for hollow glass and manufacture method thereof |
| CN202855422U (en) * | 2012-10-16 | 2013-04-03 | 上海电缆研究所 | Full-water-blocking submarine power cable |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20101359A1 (en) * | 2010-09-30 | 2012-04-02 | Nexans | Power cable with laminated water barrier |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807453A (en) * | 2010-03-29 | 2010-08-18 | 浙江省电力公司舟山电力局 | Power cable for seabed |
| CN102399521A (en) * | 2010-09-17 | 2012-04-04 | 成都硅宝科技股份有限公司 | Hot melt butyl sealant for hollow glass and manufacture method thereof |
| CN202093868U (en) * | 2011-01-05 | 2011-12-28 | 中国电子科技集团公司第二十三研究所 | Dragging watertight cable |
| CN202855422U (en) * | 2012-10-16 | 2013-04-03 | 上海电缆研究所 | Full-water-blocking submarine power cable |
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| CN102867593A (en) | 2013-01-09 |
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Address after: 200093 No. 1000, military road, Shanghai, Yangpu District Patentee after: SHANGHAI ELECTRIC CABLE RESEARCH INSTITUTE Co.,Ltd. Address before: 200093 No. 1000, military road, Shanghai, Yangpu District Patentee before: SHANGHAI ELECTRIC CABLE Research Institute |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20130109 Assignee: China Aviation Baosheng Ocean Engineering Cable Co.,Ltd. Assignor: SHANGHAI ELECTRIC CABLE RESEARCH INSTITUTE Co.,Ltd. Contract record no.: X2022320000100 Denomination of invention: Full resistance submarine power cable Granted publication date: 20150121 License type: Exclusive License Record date: 20220613 |
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