CN203746557U - Composite cable for offshore oil platform - Google Patents
Composite cable for offshore oil platform Download PDFInfo
- Publication number
- CN203746557U CN203746557U CN201420033849.4U CN201420033849U CN203746557U CN 203746557 U CN203746557 U CN 203746557U CN 201420033849 U CN201420033849 U CN 201420033849U CN 203746557 U CN203746557 U CN 203746557U
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- Prior art keywords
- cable
- offshore oil
- oil platform
- conductor
- composite cable
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- Expired - Lifetime
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- 239000002131 composite material Substances 0.000 title claims abstract description 29
- 239000004020 conductor Substances 0.000 claims abstract description 40
- 230000003287 optical effect Effects 0.000 claims abstract description 29
- 238000004891 communication Methods 0.000 claims abstract description 27
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 19
- 230000004888 barrier function Effects 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 17
- 238000009954 braiding Methods 0.000 claims description 8
- 238000004073 vulcanization Methods 0.000 claims description 8
- 229920000098 polyolefin Polymers 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 229910052736 halogen Inorganic materials 0.000 claims description 4
- 150000002367 halogens Chemical class 0.000 claims description 4
- 238000007747 plating Methods 0.000 claims description 4
- 229920001187 thermosetting polymer Polymers 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 230000002194 synthesizing effect Effects 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 230000005693 optoelectronics Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 240000005572 Syzygium cordatum Species 0.000 description 1
- 235000006650 Syzygium cordatum Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- Communication Cables (AREA)
- Insulated Conductors (AREA)
Abstract
The utility model discloses a composite cable for an offshore oil platform. The key points are that the composite cable comprises main wire cores, outdoor optical cables for communication, a wrapping belt, an inner sheath, an armor layer and an outer sheath; the number of the main wire cores is three, each of the main wire cores is sequentially provided with a conductor, a conductor shielding layer, an insulating layer, an insulating non-metal shielding layer and an insulating metal shielding layer from the inside out along the radial direction, and the conductor shielding layer, the insulating layer and the insulating non-metal shielding layer are extruded outside the conductor together, and the insulating metal shielding layer is wrapped outside the insulating non-metal shielding layer; the number of the outdoor optical cables for communication is three; the wrapping belt is wrapped outside the main wire cores and the outdoor optical cables for communication which are stranded together; the inner sheath is extruded outside the periphery of the wrapping belt; the armor layer is located at the external part of the inner sheath; and the outer sheath is covered at the external part of the armor layer.
Description
Technical field
The utility model relates to a kind of offshore oil platform composite cable.
Background technology
In recent years, along with the development of sea floor optoelectronic composite cable, offshore oil platform electricity consumption can first transmit from land by submarine fiber cable, to platform, come and then change and supply with each system applies by transformer with electric power Splices cable through marine electric installation again, the shortcoming that has solved that the energy resource consumption of in the past leaning on generating set to generate electricity to bring is large, noise is large, space used is large etc.But at present the electric pressure of the conventional sea floor optoelectronic composite cable of China is 35kV, therefore needs the marine electric installation power cable of electric pressure coupling therewith to connect.And current marine electric installation in the world adopts the standard of IEC 60092-354 with electric power cable standard, the highest voltage level of this standard is 18/30kV, at present in the world also without the electric pressure of 26/35kV, cannot select with the marine electric installation power cable of sea floor optoelectronic composite cable electric pressure coupling and be connected, so each large shipyard can only select the land system power cable of 26/35kV to replace use, and the land of this electric pressure with system power cable adopt be crosslinked polyetylene insulated, cross-linking polyethylene materials is in the time having moisture to immerse, under electric field action, can form water tree discharges, insulating barrier easily punctures, poor reliability, life-span is short, to often change, maintenance and repair cost price is too large.
Common photoelectric compound cable in the market, is mainly used in low voltage power transmission system, and light harvesting fibre and power transmission cable are integrated, and solves device signal transmission and electrical problem simultaneously, and in optical cable, compound cable conductor is no more than 6 square millimeters.On offshore oil platform, be 16 square millimeters of above medium and high voltage cable with the cross-sectional area of conductor of cable at present, for connecting the voltage of 35kV electric pressure, medium and high voltage cable circuit is the critical infrastructures of electric power system power delivery, its fail safe is most important, need to monitor cable running status.
Utility model content
The purpose of this utility model is to provide the offshore oil platform composite cable that can mate with submarine fiber cable electric pressure of a kind of simple in structure, good reliability, long service life.
The basic technical scheme of realizing the utility model object is: a kind of offshore oil platform composite cable, its design feature is: comprise master core, outdoor optical cable for communication, twining package tape, inner sheath, armour and oversheath.Master core has 3.Each master core all along its separately be radially provided with successively from inside to outside conductor, conductor shield, insulating barrier, insulated non-metal screen and insulated metal screen.The three-layer co-extruded outside that is coated on conductor of conductor shield, insulating barrier and insulated non-metal screen.Insulated metal screen is wrapped outside insulated non-metal screen.
Outdoor optical cable for communication has 3.3 master cores are along circumferentially uniformly-spaced angle setting of power cable.3 outdoor optical cable for communications, along circumferentially uniformly-spaced angle setting of power cable, contact with corresponding adjacent master core.3 master cores and 3 outdoor optical cable for communications adopt concentric type twisted synthesizing cable, and laying up pitch is 25 to 35 times of power cable external diameter.The wrapped master core twisting together of twining package tape and the outside of outdoor optical cable for communication, the wrapped rate of putting up is 20% to 50%.
Twining package tape periphery is extruded with inner sheath.Tinned copper wire or zinc-coated wire braiding that armour is 0.3mm or 0.4mm by diameter form, and are positioned at the outside of inner sheath, and its percentage of braiding coverage is 90% to 98%.
Oversheath is made by the Halogen thermosetting of resistance to mud polyolefin, and oversheath is coated on the outside of armour, and the thickness of oversheath is 1.48 millimeters to 3 millimeters.
Taking above-mentioned basic technical scheme as basic technical scheme be: conductor is identical by 6 or 12 or 15 or 18 or 30 filament diameters, the forming copper wire or stranded pressing of plating copper wire of 50 to 185 square millimeters of nominal crosss.
Taking above-mentioned basic technical scheme as basic technical scheme be: described conductor shield is by making by vulcanization type semiconductive material, and the thickness of conductor shield is 0.35 millimeter to 0.9 millimeter.
Taking above-mentioned basic technical scheme as basic technical scheme be: described insulating barrier is made up of ethylene-propylene rubber material.
Taking above-mentioned basic technical scheme as basic technical scheme be: described insulated non-metal screen is by making by vulcanization type semiconductive material.
Taking above-mentioned basic technical scheme as basic technical scheme be: insulated metal screen adopts bare copper strip wrapped outside insulated non-metal screen, and the thickness of bare copper strip is 0.1mm or 0.12mm, puts up rate 10% to 15%.
Taking above-mentioned each appropriate technical solution as basic technical scheme be: the cross section of described outdoor optical cable for communication is as circular or fan-shaped.
Taking above-mentioned each appropriate technical solution as basic technical scheme be: twining package tape is LSOH anti-flaming strap, and the thickness of twining package tape is 0.2 ± 0.02 millimeter.
Taking above-mentioned appropriate technical solution as basic technical scheme be: twining package tape is LSOH anti-flaming strap, and the thickness of twining package tape is 0.2 ± 0.02 millimeter.
The utlity model has positive effect: (1) offshore oil platform of the present utility model composite cable has been filled up the blank of the marine electric installation use power cable that sea floor optoelectronic composite cable that not have specially be at present 35kV with electric pressure mates.
(2) offshore oil platform of the present utility model forms with the identical copper wire of the conductor multifilament diameter of the master core of composite cable or stranded pressing of plating copper wire, can reduce conductive surface gap, prevents that the material of conductor shield is absorbed in conductor.Conductor shield (internal shield), insulating barrier and insulated non-metal screen (outer shielding layer) adopt the three-layer co-extruded outside that is coated on conductor, bonding tightness between insulating barrier and interior outer shielding layer and the smoothness of superficial layer are ensured, reduce the partial discharge phenomenon producing because of gap, greatly improved the useful life of product.
(3) offshore oil platform of the present utility model adopts with the insulating barrier of composite cable the ethylene-propylene rubber macromolecular material that voltage withstand class is 35kV, the tensile strength that has ensured insulating barrier is not less than 5MPa, elongation at break is not less than 200%, in watertight aircase, carry out that aging (temperature is 135 DEG C ± 3 DEG C, time is 168h), tensile strength retention rate is not less than 80% of former tensile strength, and elongation at break is not less than 80% of former elongation at break; Conductor shield is selected to make by vulcanization type semiconductive material, has ensured that the tensile strength of conductor shield is not less than 15MPa, and elongation at break is not less than 200%, 90 DEG C of specific insulation and is not less than 200 ohmcms; Insulated non-metal screen is selected to make by vulcanization type semiconductive material, has ensured that the tensile strength of insulated non-metal screen is not less than 13MPa, and elongation at break is not less than 350%, 90 DEG C of specific insulation and is not less than 50 ohmcms.
(4) composite cable partial discharge test satisfied 1.73 after testing for offshore oil platform of the present utility model
u 0under, partial discharge quantity is less than 5Pc, and power-frequency voltage is tested 3.5
u 0lower 5min does not puncture, and properties of product are reliable.
(5) offshore oil platform of the present utility model with composite cable in the time that master core and outdoor optical cable for communication all have 3, outdoor optical cable for communication also plays certain filling effect, facilitate stranding operation, be conducive to cable and deflecting the stable of process center line cored structure, the uniformity that core is stressed, makes power cable consolidation, the rounding more after stranding.
(6) offshore oil platform of the present utility model is made up of the Halogen thermosetting of resistance to mud polyolefin with the oversheath of composite cable, has good resistance to mud and anti-seawater corrosion performance.
(7) offshore oil platform of the present utility model increases outdoor optical cable for communication in cable with composite cable, the residing temperature field of outdoor optical cable for communication that adopts distributed optical fiber temperature sensor technology to measure in real time in cable distributes, the actual motion temperature of detection that not only can be intelligent and demonstration cable, automatic storage history data, consult at any time the operating temperature of cable, can also realize automatic overtemperature alarm and online feedback control, to guarantee that cable has suitable ampacity, reach can make cable to greatest extent transmission of electric energy can guarantee again the object of cable running safety.The shortcomings such as the coverage rate of Traditional Man in safeguarding is little, cost is high, poor reliability, shortage real-time are avoided.
Brief description of the drawings
Fig. 1 is the structural representation of the cross section of offshore oil platform of the present utility model composite cable.
Mark in above-mentioned accompanying drawing is as follows:
Master core 1, conductor 11, conductor shield 12, insulating barrier 13, insulated non-metal screen 14, insulated metal screen 15, outdoor optical cable for communication 2, twining package tape 3, inner sheath 4, armour 5, oversheath 6.
Embodiment
(embodiment 1)
See Fig. 1, the offshore oil platform of the present embodiment comprises master core 1, outdoor optical cable for communication 2, twining package tape 3, inner sheath 4, armour 5 and oversheath 6 with composite cable.
Master core 1 has 3, and the structure of 3 master cores 1 is identical.3 master cores 1 are along circumferentially uniformly-spaced angle setting of power cable.3 master cores 1 are all radially provided with conductor 11, conductor shield 12, insulating barrier 13, insulated non-metal screen 14 and insulated metal screen 15 separately from inside to outside successively along it.
Conductor 11 is identical by 6 or 12 or 15 or 18 or 30 filament diameters, the forming copper wire or stranded pressing of plating copper wire of 50 to 185 square millimeters of nominal crosss, and the present embodiment adopts and forms 70 square millimeters of stranded pressing of tinned copper wire of 12 monofilament nominal crosss.
Conductor shield 12, by making by vulcanization type semiconductive material, can adopt the semi-conductive shielding material of the HFDB-0586 of Dow Chemical supply in the present embodiment.Conductor shield 12 is extruded in the outside of conductor 11.The thickness of conductor shield 12 is 0.35 millimeter to 0.9 millimeter, and the present embodiment is 0.5 millimeter.The tensile strength of conductor shield 12 is not less than 15MPa, and elongation at break is not less than 200%, 90 DEG C of specific insulation and is not less than 200 ohmcms.
Insulating barrier 13 is made up of ethylene-propylene rubber material, can adopt the ethylene propylene rubber insulation material of the ERI-3748 of Dow Chemical supply, the tensile strength of insulating barrier 13 is not less than 5MPa, elongation at break is not less than 200%, in watertight aircase, carry out that aging (temperature is 135 DEG C ± 3 DEG C, time is 168h), tensile strength retention rate is not less than 80% of former tensile strength, and elongation at break is not less than 80% of former elongation at break.Insulating barrier 13 is extruded in the outside of conductor shield 12.
Insulated non-metal screen 14, by making by vulcanization type semiconductive material, can adopt the HFDA-0693 strippable semi-conductive shielded cable material of Dow Chemical to make in the present embodiment.The tensile strength of insulated non-metal screen 14 is not less than 13MPa, and elongation at break is not less than 350%, 90 DEG C of specific insulation and is not less than 50 ohmcms.Insulated non-metal screen 14 is extruded in the outside of insulating barrier 13.
Conductor shield 12, insulating barrier 13 and insulated non-metal screen 14 adopt the three-layer co-extruded outside that is coated on conductor 11.
Insulated metal screen 15 adopts bare copper strip wrapped outside insulated non-metal screen 14, and the thickness of bare copper strip is 0.1mm to 0.12mm, and the present embodiment is 0.1 millimeter, puts up rate 10% to 15%.
Outdoor optical cable for communication 2 has 3, and 3 outdoor optical cable for communications 2, along circumferentially uniformly-spaced angle setting of power cable, contact with corresponding adjacent master core 1.The GYTA type outdoor optical cable for communication that adopts Jiangsu Changfei Zhongli Optical Fibre & Optical Cable Co. Ltd. to provide in the present embodiment, also can adopt patent documentation Granted publication number is CN201837756U disclosed " a kind of outdoor optical cable for lapped joint layer-stranded type communication ".1 and 3 outdoor optical cable for communications 2 of 3 master cores adopt concentric type twisted synthesizing cable to the right, and laying up pitch is 25 to 35 times of power cable external diameter, and the present embodiment is 30 times.Twining package tape 3 is LSOH anti-flaming strap, the LSOH anti-flaming strap that the present embodiment adopts Shenyang Correspondent cable material Co., Ltd to produce.The thickness of twining package tape 3 is 0.2 ± 0.02 millimeter, the wrapped master core 1 twisting together of twining package tape 3 and the outside of outdoor optical cable for communication 2, and the wrapped rate of putting up is 20% to 50%, the present embodiment is 25%.
Twining package tape 3 peripheries are extruded with inner sheath 4.Inner sheath 4 adopts polyolefin or cross-linked polyolefin be made (the present embodiment is polyolefin).The thickness of inner sheath 4 is 2.5 millimeters to 5 millimeters (the present embodiment is 3.5 millimeters)
Tinned copper wire or zinc-coated wire braiding that armour 5 is 0.3mm or 0.4mm by diameter form, and be positioned at the outside of inner sheath 4, its percentage of braiding coverage is 90% to 98%, and the tinned copper wire braiding that the armour 5 of the present embodiment is 0.35mm by diameter forms, and its percentage of braiding coverage is 95%.The tensile strength of armour 5 is not less than 100 MPa, and elongation at break is not less than 15%.
Oversheath 6 is made by the Halogen thermosetting of resistance to mud polyolefin, and the present embodiment adopts the protective cover material of the trade mark ZL1213-HN-N of Hebei Zhonglian Plastic Technology Development Co., Ltd.'s production.Oversheath 6 is coated on the outside of armour 5.The thickness of oversheath 6 is 1.48 millimeters to 3 millimeters (the present embodiment is 2.02 millimeters).
Above embodiment is only for illustration of the utility model; but not to restriction of the present utility model; person skilled in the relevant technique is not in the situation that departing from spirit and scope of the present utility model; can also make various conversion and variation; in concrete application process, can also transform accordingly according to the inspiration of above-described embodiment, within therefore all technical schemes that are equal to all should be included into scope of patent protection of the present utility model.
Claims (9)
1. an offshore oil platform composite cable, is characterized in that: comprise master core (1), outdoor optical cable for communication (2), twining package tape (3), inner sheath (4), armour (5) and oversheath (6); Master core (1) has 3; Each master core (1) all along its separately be radially provided with successively from inside to outside conductor (11), conductor shield (12), insulating barrier (13), insulated non-metal screen (14) and insulated metal screen (15); Conductor shield (12), insulating barrier (13) and the three-layer co-extruded outside that is coated on conductor (11) of insulated non-metal screen (14); Insulated metal screen (15) is wrapped outside insulated non-metal screen (14);
Outdoor optical cable for communication (2) has 3; 3 master cores (1) are along circumferentially uniformly-spaced angle setting of power cable; 3 outdoor optical cable for communications (2), along circumferentially uniformly-spaced angle setting of power cable, contact with corresponding adjacent master core (1); 3 master cores (1) and 3 outdoor optical cable for communications (2) adopt concentric type twisted synthesizing cable, and laying up pitch is 25 to 35 times of power cable external diameter; The wrapped master core (1) twisting together of twining package tape (3) and the outside of outdoor optical cable for communication (2), the wrapped rate of putting up is 20% to 50%;
Twining package tape (3) periphery is extruded with inner sheath (4); Tinned copper wire or zinc-coated wire braiding that armour (5) is 0.3mm or 0.4mm by diameter form, and are positioned at the outside of inner sheath (4), and its percentage of braiding coverage is 90% to 98%;
Oversheath (6) is made by the Halogen thermosetting of resistance to mud polyolefin, and oversheath (6) is coated on the outside of armour (5), and the thickness of oversheath (6) is 1.48 millimeters to 3 millimeters.
2. offshore oil platform composite cable according to claim 1, is characterized in that: conductor (11) is identical by 6 or 12 or 15 or 18 or 30 filament diameters, the forming copper wire or stranded pressing of plating copper wire of 50 to 185 square millimeters of nominal crosss.
3. offshore oil platform composite cable according to claim 1, is characterized in that: described conductor shield (12) is by making by vulcanization type semiconductive material, and the thickness of conductor shield (12) is 0.35 millimeter to 0.9 millimeter.
4. offshore oil platform composite cable according to claim 1, is characterized in that: described insulating barrier (13) is made up of ethylene-propylene rubber material.
5. offshore oil platform composite cable according to claim 1, is characterized in that: described insulated non-metal screen (14) is by making by vulcanization type semiconductive material.
6. offshore oil platform composite cable according to claim 1, it is characterized in that: insulated metal screen (15) adopts bare copper strip wrapped outside insulated non-metal screen (14), the thickness of bare copper strip is 0.1mm or 0.12mm, puts up rate 10% to 15%.
7. according to the offshore oil platform composite cable one of claim 1 to 6 Suo Shu, it is characterized in that: the cross section of described outdoor optical cable for communication (2) is for circular or fan-shaped.
8. according to the offshore oil platform composite cable one of claim 1 to 6 Suo Shu, it is characterized in that: twining package tape (3) is LSOH anti-flaming strap.
9. offshore oil platform composite cable according to claim 7, is characterized in that: twining package tape (3) is LSOH anti-flaming strap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420033849.4U CN203746557U (en) | 2014-01-20 | 2014-01-20 | Composite cable for offshore oil platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420033849.4U CN203746557U (en) | 2014-01-20 | 2014-01-20 | Composite cable for offshore oil platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203746557U true CN203746557U (en) | 2014-07-30 |
Family
ID=51346327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420033849.4U Expired - Lifetime CN203746557U (en) | 2014-01-20 | 2014-01-20 | Composite cable for offshore oil platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203746557U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869763A (en) * | 2016-05-20 | 2016-08-17 | 安徽宏力特种线缆有限公司 | Photoelectric compound insulated power cable |
| CN110783032A (en) * | 2019-11-06 | 2020-02-11 | 安徽华上电缆科技有限公司 | Salt-resistant and corrosion-resistant cable for offshore oil platform |
-
2014
- 2014-01-20 CN CN201420033849.4U patent/CN203746557U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869763A (en) * | 2016-05-20 | 2016-08-17 | 安徽宏力特种线缆有限公司 | Photoelectric compound insulated power cable |
| CN110783032A (en) * | 2019-11-06 | 2020-02-11 | 安徽华上电缆科技有限公司 | Salt-resistant and corrosion-resistant cable for offshore oil platform |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |