CN103310890A - Crosslinked polyethylene insulated multi-core submarine cable - Google Patents
Crosslinked polyethylene insulated multi-core submarine cable Download PDFInfo
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- CN103310890A CN103310890A CN2013102539981A CN201310253998A CN103310890A CN 103310890 A CN103310890 A CN 103310890A CN 2013102539981 A CN2013102539981 A CN 2013102539981A CN 201310253998 A CN201310253998 A CN 201310253998A CN 103310890 A CN103310890 A CN 103310890A
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- submarine cable
- crosslinked polyetylene
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Abstract
The invention discloses a crosslinked polyethylene insulated multi-core submarine cable. The cable comprises a cable core which is formed by twisting three insulated wire cores, a packing layer is arranged at the gap position of the cable core, the cable core is wrapped in a copper braided fiber band, a lead protective sleeve, a lining layer and an armoring layer sequentially, an outer protective layer is wrapped at the outermost layer of the cable in an extruding mode, and four optical fiber units which are centrosymmetric are placed in the armoring layer. The insulated wire cores are composed of conductors and insulated layers and insulated shielding layers which are wrapped round the outsides of the conductors in the extruding mode. The optical fiber units are composed of optical fibers and optical fiber armoring layers which cover the outsides of the optical fibers. The crosslinked polyethylene insulated multi-core submarine cable is high in insulating performance, water-resistant performance, stretching-resistant performance and corrosion-resistant performance and capable of meeting the requirements of submarine laying and operation.
Description
Technical field
The present invention relates to the electric wire field, specifically refer to a kind of crosslinked polyetylene insulated multicore submarine cable.
Background technology
Along with carrying forward vigorously and the needs of national defense construction of the continuous enhancing of china's overall national strength and ocean development, the coastal people are in order to improve environment simultaneously, improve production, quality of life, demand to electric power, communication constantly strengthens, for big length high pressure and superhigh pressure subsea power optical communication composite rope, the wide market prospects of the amount of providing are provided in developmental research.Particularly new oil gas field is constantly found in China shallow sea, constantly increase as Bohai Sea Gulf, Eastern South China Sea and western last year verifying minable petroleum and natural gas storage capacity, therefore, in recent years in extra large petroleum system will need a large amount of sea electric power cables, extra large photoelectric composite submarine cable, platform with power cable, control cable and signal cable.Still need import submarine cable and sea floor optoelectronic composite cable at present.
At present, in telecommunication cable, submarine cable comprises submarine communication cable and sea electric power cable.Wherein, submarine communication cable is mainly used in long distance communication net, as between the remote island and military installations over strait etc. than the communication traffic of important events, expense costliness, but privacy degrees height; Laying apart from laying apart from much shorter than telecommunication cable of sea electric power cable, be mainly used between the island, land, cross rivers or bay, from being connected to each other between land connection drilling platforms or drilling platforms etc., can also be used for transmitting high-power electric energy under water, be equal to the effect of underground power cable, just the application scenario is different with system of laying.
In addition, because the use occasion of submarine cable is more special, environment is more abominable, and is all higher to performance demands such as water resistance, decay resistance and stretching resistance levels.So, when China uses heavy in section sea electric power cable, still need import.
But in realizing process of the present invention, the inventor finds to exist at least in the prior art that water resistance is poor, poor corrosion resistance, stretching resistance poor performance, cost is high lays defectives such as difficulty is big with installation.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of have higher insulation property, block-water performance, stretching resistance performance, Corrosion Protection, adapts to the crosslinked polyetylene insulated multicore submarine cable that demand was laid, moved in the seabed.
A kind of crosslinked polyetylene insulated multicore submarine cable of the present invention, comprise by three and thoroughly do away with the stranded cable core that forms of edge core, the gap of cable core is provided with packed layer, wraps up copper braided fiber band, lead sheath, inner covering, armour outside cable core successively, extrudes outer jacket at the cable outermost layer; In armour, place and have centrosymmetric four fiber units.
Further improve, described insulated wire cores is by conductor and be extruded in conductor outer insulating barrier, insulation screen and constitute.
Further improve, described fiber unit is by optical fiber and is coated on the outer optical fiber armoured layer of optical fiber and constitutes.
Further improve, the thickness of insulation screen is 1.0mm again; The thickness of copper braided fiber band is 2.0mm; Described lead sheath (7) adopts continuous expressing technique to make, and thickness is 2.5mm; Described inner covering (8) is made by the elastomeric material with imbibition characteristic is wrapped, and thickness is 3.0mm.
The invention has the advantages that:
(1) selecting copper is conductor material, and discharge capacity is big; Between the copper single line, add water-proofing powder, so that conductor has the performance that vertically blocks water.
(2) use insulation screen and effectively improve electric field, prevent partial discharge, improve electric property; Produce the main insulation of cable with crosslinked polyethylene D.C. isolation material, thickness is 10.0mm, the needs of long-term direct-current working volts both can have been satisfied, can bear simultaneously polarity inversion and DC stacked temporary overvoltage to the requirement of insulation, and problems such as the blocked up waste of raw materials that causes that prevents from insulating, the outside diameter of cable are big, transportation and laying installation difficulty;
(3) adopt the copper braided fiber band of 2.0mm thickness, have the imbibition characteristic, can prevent moisture along the cable axial dispersion, protect simultaneously that cable insulation avoids that high temperature in the metallic sheath extrusion is scalded and laid, the mechanical force damage in the running; In addition, this layer has the semiconductive characteristic, can realize effectively electrically contacting of metallic sheath and insulation shielding by it, prevents by internal field and concentrates the partial discharge that causes;
(4) adopt smooth lead sheath as the metal sheath of cable, and adopt whole expressing technique, thickness is 3.0mm, can bear the mechanical force of installing when laying and moving, also can play the radially function of waterproof simultaneously, and Corrosion Protection preferably can be provided, adapt to the needs that the seabed is laid, moved;
(5) adopt the individual layer wire armoring, and the armouring single line is adopted in addition anti-corrosion protection of independent polymer jacket; As long as this layer sheath do not fallen by the drift sand erosion, just can avoid single line to contact with the direct of seawater, thereby the operational reliability of Corrosion Protection and the cable of armour is provided greatly.
(6) fiber unit is made of optical fiber, stainless steel tube and plastic sheath.Optical fiber is placed in the stainless steel tube, and stainless steel tube places in the plastic sheath, and the diameter of plastic sheath is equal to or slightly lower than the diameter of armoury wire, so that the optical cable unit can replace the position of an armoury wire.The effect of plastic sheath is the couple corrosion that prevents between stainless steel tube and armoury wire, and the inner tiny tubing of protection is avoided extruding.Fiber unit is integrated in the submarine cable, has following function: distributed temperature monitoring (DTS); Transfer of data; Cable strain or vibration measurement; Fault-finding and location; The variation of exploration cable route is as the sedimental variation that covers on the cable.
(7) pe sheath is as the outer jacket of cable, effectively waterproof and protect armour to avoid the environment electrochemical corrosion.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment:
As shown in Figure 1, a kind of crosslinked polyetylene insulated multicore submarine cable of the present invention, comprise by three and thoroughly do away with the stranded cable core that forms of edge core, the gap of cable core is provided with packed layer 4, outside cable core, wrap up copper braided fiber band 5, lead sheath 6, inner covering 7, armour 8 successively, extrude outer jacket 9 at the cable outermost layer; In armour 9, place and have centrosymmetric four fiber units 12; Described insulated wire cores is by conductor 1 and be extruded in conductor 1 outer insulating barrier 2, insulation screen 3 and constitute; Described fiber unit 12 is by optical fiber 10 and is coated on the outer optical fiber armoured layer 11 of optical fiber 10 and constitutes.
The invention provides a kind of crosslinked polyetylene insulated multicore submarine cable form and implementation method; the above only is preferred implementation method of the present invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also make some improvement, these improvement also should be considered as protection scope of the present invention.
Claims (8)
1. crosslinked polyetylene insulated multicore submarine cable, it is characterized in that: comprise by three and thoroughly do away with the stranded cable core that forms of edge core, the gap of cable core is provided with packed layer (4), outside cable core, wrap up copper braided fiber band (5), lead sheath (6), inner covering (7), armour (8) successively, extrude outer jacket (9) at the cable outermost layer; In armour (9), place and have centrosymmetric four fiber units (12).
2. crosslinked polyetylene insulated multicore submarine cable according to claim 1 is characterized in that: described insulated wire cores is by conductor (1) and be extruded in the outer insulating barrier (2) of conductor (1), insulation screen (3) constitutes.
3. crosslinked polyetylene insulated multicore submarine cable according to claim 1 is characterized in that: described fiber unit (12) is by optical fiber (10) and is coated on the outer optical fiber armoured layer (11) of optical fiber (10) and constitutes.
4. crosslinked polyetylene insulated multicore submarine cable according to claim 2 is characterized in that: described conductor (1) adopts and forms copper stranded pressing of single line, and cross section is circular configuration, and sectional area is 400 mm
2, 650 mm
2Or 700 mm
2
5. crosslinked polyetylene insulated multicore submarine cable according to claim 2, it is characterized in that: the thickness of described insulation screen (3) is 1.0mm.
6. crosslinked polyetylene insulated multicore submarine cable according to claim 1, it is characterized in that: the thickness of described copper braided fiber band (5) is 2.0mm.
7. crosslinked polyetylene insulated multicore submarine cable according to claim 1 is characterized in that: described lead sheath (6) adopts continuous expressing technique to make, and thickness is 2.5mm.
8. crosslinked polyetylene insulated multicore submarine cable according to claim 1, it is characterized in that: described inner covering (7) is made by the elastomeric material with imbibition characteristic is wrapped, and thickness is 3.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102539981A CN103310890A (en) | 2013-06-25 | 2013-06-25 | Crosslinked polyethylene insulated multi-core submarine cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102539981A CN103310890A (en) | 2013-06-25 | 2013-06-25 | Crosslinked polyethylene insulated multi-core submarine cable |
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| CN103310890A true CN103310890A (en) | 2013-09-18 |
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| CN2013102539981A Pending CN103310890A (en) | 2013-06-25 | 2013-06-25 | Crosslinked polyethylene insulated multi-core submarine cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655027A (en) * | 2016-04-08 | 2016-06-08 | 江苏凯达电缆有限公司 | Light crosslinked polyethylene insulated power cable for laying in shallow seas and lakes |
| CN105937701A (en) * | 2016-06-29 | 2016-09-14 | 无锡必胜必精密钢管有限公司 | Steel pipe for electric appliance pipeline |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420033A (en) * | 2011-06-30 | 2012-04-18 | 山东阳谷电缆集团有限公司 | Photoelectric composite submarine cable |
| CN202632817U (en) * | 2012-06-01 | 2012-12-26 | 江苏亨通高压电缆有限公司 | Three-core optical fiber composite submarine cable |
| CN202694966U (en) * | 2012-05-21 | 2013-01-23 | 辽宁金环电缆有限公司 | Crosslinked polyethylene steel wire armored high-power transmission submarine power cable |
| CN103021546A (en) * | 2012-12-21 | 2013-04-03 | 无锡江南电缆有限公司 | 110 kV cross linked polyethylene insulating single-core submarine cable |
| CN203325525U (en) * | 2013-06-25 | 2013-12-04 | 江苏红峰电缆集团有限公司 | Crosslinking polyethylene insulation multi-core submarine cable |
-
2013
- 2013-06-25 CN CN2013102539981A patent/CN103310890A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420033A (en) * | 2011-06-30 | 2012-04-18 | 山东阳谷电缆集团有限公司 | Photoelectric composite submarine cable |
| CN202694966U (en) * | 2012-05-21 | 2013-01-23 | 辽宁金环电缆有限公司 | Crosslinked polyethylene steel wire armored high-power transmission submarine power cable |
| CN202632817U (en) * | 2012-06-01 | 2012-12-26 | 江苏亨通高压电缆有限公司 | Three-core optical fiber composite submarine cable |
| CN103021546A (en) * | 2012-12-21 | 2013-04-03 | 无锡江南电缆有限公司 | 110 kV cross linked polyethylene insulating single-core submarine cable |
| CN203325525U (en) * | 2013-06-25 | 2013-12-04 | 江苏红峰电缆集团有限公司 | Crosslinking polyethylene insulation multi-core submarine cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655027A (en) * | 2016-04-08 | 2016-06-08 | 江苏凯达电缆有限公司 | Light crosslinked polyethylene insulated power cable for laying in shallow seas and lakes |
| CN105937701A (en) * | 2016-06-29 | 2016-09-14 | 无锡必胜必精密钢管有限公司 | Steel pipe for electric appliance pipeline |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130918 |