CN210575192U - High-shielding anti-interference photoelectric composite ultrahigh-voltage power cable - Google Patents
High-shielding anti-interference photoelectric composite ultrahigh-voltage power cable Download PDFInfo
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- CN210575192U CN210575192U CN201922051872.1U CN201922051872U CN210575192U CN 210575192 U CN210575192 U CN 210575192U CN 201922051872 U CN201922051872 U CN 201922051872U CN 210575192 U CN210575192 U CN 210575192U
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Abstract
The utility model discloses a compound superhigh pressure power cable of anti-interference type photoelectricity of high shielding, the cable core form by many insulation shielding sinle silks transposition, cladding silver-plated composite electrolytic copper foil band behind the silicon rubber obturator is filled to the space department of cable core, be equipped with the multimode fiber unit of a set of mutual symmetry outside silver-plated composite electrolytic copper foil band and crowded package thickness is 2-3 mm's crosslinked polyolefin inner sheath simultaneously, weave the copper wire shielding layer outside the crosslinked polyolefin inner sheath behind the package thickness be 0.5-1 mm's buffer type semiconduction water blocking area, overlap again and establish the electromagnetic shield pipe after the compound area is moulded around the package steel in buffer type semiconduction water blocking area, crowded package thickness is 1-2 mm's ceramic low smoke zero halogen polyolefin fire-resistant oversheath outside the electromagnetic shield pipe. The utility model discloses heart yearn stable in structure, anti electromagnetic pulse is effectual, and transmission bandwidth can exceed 2500MHZ or higher bandwidth transmission, and signal transmission rate is fast, and flame retardant efficiency is good, and the security is high, effectively shields differential signal to near-end/far-end crosstalk mutual signal interference within a definite time.
Description
Technical Field
The utility model relates to a cable field, concretely relates to high shielding anti-interference type photoelectric composite superhigh pressure power cable.
Background
With the high-speed development of the national power industry, the construction project of the domestic +/-150 kV-500 kV ultrahigh-voltage, large-capacity and long-distance direct-current transmission smart power grid starts, and the construction of the smart power grid needs to transmit a high-voltage line operation online detection signal.
The photoelectric composite power cable mainly solves the problem of transmission of power and signals at the same time, and sometimes needs to be applied to special occasions, such as connection between a coastal island and an inland, transmission of electric energy and optical signals of a marine oil exploration platform and the sea bottom or the water bottom of a marine wind power generation field and the like, so that the cable has certain radial waterproof performance, and an insulating layer has corrosion resistance and impact resistance; the structure of a single water-blocking tape is commonly adopted, when the cable is damaged and the damage extends into the conductor, the water-blocking tape in the gap of the conductor is not enough to prevent seawater from longitudinally permeating along the conductor, so that a water tree is likely to be formed in the conductor, and the whole cable is scrapped, therefore, the maintenance cost is high, the maintenance time is long, and the power failure loss is large;
in addition, if the cable core is in a high-temperature environment for a long time, the conductor can be damaged, so that the electrical performance, the signal transmission performance and the like of the cable are greatly influenced, the use requirements cannot be continuously met, the anti-interference effect of the prior art on the cable is limited, and the cable is easily subjected to interference of lightning weather and a magnetic field, and electromagnetic interference between differential signals and the core wire, and between the differential signals and the external multimode optical fiber unit.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to overcome the defects in the prior art, the high-shielding anti-interference photoelectric composite ultrahigh-voltage power cable is provided, the core wire is stable in structure, the electromagnetic pulse resistance effect is good, the transmission bandwidth can exceed 2500MHZ or higher bandwidth for transmission, the signal transmission rate is high, the flame retardant effect is good, the safety is high, and the mutual signal interference of near-end/far-end crosstalk between differential signal pairs is effectively shielded.
The technical scheme is as follows: in order to achieve the above object, the utility model provides a high shielding anti-interference type photoelectricity composite ultra-high voltage power cable, the cable core form by many insulation shielding sinle silk transposition, cladding silvering composite electrolytic copper foil band behind the silicon rubber obturator is filled to the space department of cable core, be equipped with a set of multimode fiber unit of mutual symmetry outside silvering composite electrolytic copper foil band and crowded package thickness is 2-3 mm's crosslinked polyolefin inner sheath simultaneously, weave the copper wire shielding layer outside the crosslinked polyolefin inner sheath and around package thickness be 0.5-1 mm's buffering type semi-conductive water blocking area behind the copper wire shielding layer, overlap again behind the steel-plastic composite band outside buffering type semi-conductive water blocking area and establish the electromagnetic shield pipe, extrude the fire-resistant oversheath of pottery low smoke zero halogen polyolefin that package thickness is 1-2mm outside the electromagnetic shield pipe.
Furthermore, the insulation shielding wire core comprises a conductor, a semiconductive strapping tape is wrapped outside the conductor, a conductor shielding layer, a foamed polyethylene insulating layer and an insulation shielding layer are sequentially and jointly extruded outside the semiconductive strapping tape, a silver-plated copper braided shielding net is wrapped outside the insulation shielding layer, and a Teflon corrugated hose is sleeved outside the silver-plated copper braided shielding net.
Furthermore, the multimode optical fiber unit is composed of a multimode optical fiber, a resin adhesive tape wrapped outside the multimode optical fiber, a perfluorinated ethylene propylene insulating layer extruded and wrapped, and a loose tube wrapped outside the perfluorinated ethylene propylene insulating layer.
Further, the conductor is an aluminum alloy segmented conductor.
Further, the volume resistivity and the surface resistance of the semiconductive strapping tape are respectively 1 × 105The graphene composite semi-conductive tapes below omega-cm and 100 omega adopt an overlapping wrapping structure, and the covering rate is not less than 20%.
Furthermore, the conductor shielding layer is prepared from an ultra-clean ultra-smooth cross-linked graphene composite high-semiconductive inner shielding material with the volume resistivity of less than 20 omega cm at 20 ℃.
Furthermore, the insulation shielding layer is prepared from an ultra-clean ultra-smooth cross-linked graphene composite high-semiconductive external shielding material with the volume resistivity of less than 20 omega cm at 20 ℃.
Furthermore, the electromagnetic shielding tube comprises a middle ferrite magnetic tube, an aluminum foil layer is plated on the inner surface of the ferrite magnetic tube, a lead skin layer is pasted on the outer surface of the ferrite magnetic tube, and a glass fiber layer is pasted outside the lead skin layer.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the foamed polyethylene insulating layer is adopted in the insulating shielding wire core, so that the composite cable has excellent high-frequency insulation, heat preservation, light weight, signal mutual shielding and other excellent performances, can well shield the interference of external pulse signals and the electromagnetic interference among a plurality of internal differential signal pair core wires and between the differential signal pair core wires and an external multimode optical fiber unit, and ensures the stability of signal transmission of the composite cable;
2. the silicon rubber filler is filled, so that the roundness of the cable is ensured, the wire core can be fixed, the cable core can be prevented from being extruded and deformed, and the silicon rubber has good wear resistance, good air permeability and good low-temperature resistance;
3. the silver-plated composite electrolytic copper foil wrapping tape is coated outside the cable core, so that copper wire oxidation can be prevented, and the electromagnetic pulse interference resistance and real-time mutual offset effect of the inner conductor and the outer conductor can be increased;
4. the cable has excellent weather resistance, oil resistance, ozone resistance and ultraviolet resistance, good wear resistance, high tear strength and small compression permanent deformation by adopting the cross-linked polyolefin inner sheath;
5. the ferrite magnetic tube can reduce the interference of a low-frequency magnetic field, the lightning-resistant effect of the cable can be improved by matching the lead sheath layer with the aluminum foil protective layer, so that the anti-interference effect of the cable is ensured, the cable is prevented from being interfered by thunder weather, a magnetic field and the like, the glass fiber layer is adhered outside the lead sheath layer, the effects of buffering, tensile strength, compression strength, wear resistance and the like can be achieved, and the service life of the cable is greatly prolonged;
6. the core wire has stable structure and good electromagnetic pulse resistance, the transmission bandwidth can exceed 2500MHZ or higher bandwidth transmission, the signal transmission rate is high, the flame retardant effect is good, the safety is high, and the mutual signal interference of near-end/far-end crosstalk between differential signal pairs is effectively shielded.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the electromagnetic shielding structure of the present invention.
Detailed Description
The present invention will be further clarified by the following description with reference to the attached drawings and specific examples, which should be understood as being merely illustrative of the present invention and not limiting the scope of the present invention, and modifications of various equivalent forms of the present invention by those skilled in the art after reading the present invention, all fall within the scope defined by the appended claims of the present application.
As shown in fig. 1, the utility model provides a photoelectric composite ultrahigh voltage power cable, including the cable core, the cable core form by many insulation shielding sinle silks transposition, insulation shielding sinle silk include conductor 1 (adopt the aluminum alloy to cut apart the conductor), wrap semiconduction strapping 2 outside the conductor, co-extrude conductor shielding layer 3, foaming polyethylene insulating layer 4, insulation shielding layer 5 in proper order outside semiconduction strapping, wrap silver-plated copper and weave shielding net 6 outside insulation shielding layer, wrap teflon corrugated hose 7 outside silver-plated copper and weave shielding net; the foamed polyethylene insulating layer is adopted in the insulating shielding wire core, so that the composite cable has excellent high-frequency insulation, heat preservation, light weight, signal mutual shielding and other excellent performances, can well shield the interference of external pulse signals and the electromagnetic interference among a plurality of internal differential signal pair core wires and between the differential signal pair core wires and an external multimode optical fiber unit, and ensures the stability of signal transmission of the composite cable; the silver-plated copper braided shielding net is adopted, so that the shielding performance of the cable is good, and the bending performance, oxidation resistance and fatigue resistance of the wire core are enhanced; the Teflon corrugated hose enhances the performances of high temperature resistance, strong acid resistance, strong alkali resistance and the like of the wire core;
the gap of the cable core is filled with a silicon rubber filler 8 and then is coated with a silver-plated composite electrolytic copper foil wrapping belt 9, so that copper wire oxidation can be prevented, and the anti-electromagnetic pulse interference and real-time mutual offset effect of the inner conductor and the outer conductor can be increased; a group of mutually symmetrical multimode optical fiber units 20 are arranged outside a silver-plated composite electrolytic copper foil wrapping tape, a crosslinked polyolefin inner sheath 10 with the thickness of 2-3mm is extruded at the same time, and a buffer type semi-conductive water-blocking tape 12 with the thickness of 0.5-1mm is wrapped after a copper wire shielding layer 11 is woven outside the crosslinked polyolefin inner sheath, so that the radial waterproof performance of the cable is improved; the buffer type semi-conductive water-blocking tape is wrapped with a steel-plastic composite tape 13, then an electromagnetic shielding tube 14 is sleeved, the steel-plastic composite tape enables the cable to have good tensile strength and good waterproof and insulating protection functions, a ceramic low-smoke halogen-free polyolefin fireproof outer sheath 15 with the thickness of 1-2mm is extruded outside the electromagnetic shielding tube, a hard ceramic hard shell can be generated under the high-temperature condition of more than 650 ℃, the hard shell is not molten and does not drip, water spraying and mechanical vibration can be resisted, a good heat insulation effect is achieved, and the fireproof and flame-retardant purposes are achieved.
The multimode optical fiber unit 20 is composed of a multimode optical fiber 16, a resin adhesive tape 17 wrapped outside the multimode optical fiber, a perfluorinated ethylene propylene insulating layer 18 extruded and wrapped on the perfluorinated ethylene propylene insulating layer, and a loose tube 19 wrapped outside the perfluorinated ethylene propylene insulating layer, wherein the resin adhesive tape is wrapped on the multimode optical fiber to prevent the multimode optical fiber from being oxidized, and the perfluorinated ethylene propylene insulating layer enables the optical fiber unit to have good performances of electrical insulation, wear resistance, water resistance, high temperature resistance, pulse interference resistance and the like, so that the stability of a conductor for transmitting signals is ensured;
in order to further improve various performances of the cable, the volume resistivity and the surface resistance of the semi-conductive strapping tape are respectively 1 x 105The graphene composite semi-conductive tape with the thickness of omega-cm and the thickness of less than 100 omega adopts an overlapping wrapping structure, and the covering rate is not less than 20%; the conductor shielding layer is prepared from an ultra-clean ultra-smooth cross-linked graphene composite high semi-conductive inner shielding material with the volume resistivity of less than 20 omega cm at the temperature of 20 ℃; the insulation shielding layer is prepared from an ultra-clean ultra-smooth cross-linked graphene composite high semi-conductive outer shielding material with the volume resistivity of less than 20 omega cm at the temperature of 20 ℃; the inner and outer shielding materials and the semi-conductive strapping tapes are made of graphene with excellent conductivity as conductive filler, so that the volume resistivity, surface resistance, mechanical property and thermal stability of the materials are superior to those of the existing products, the effect of a cable homogenizing electric field is greatly improved, partial discharge is prevented, and the reliability and the service life of the operation of the cable are improved.
As shown in fig. 2, the electromagnetic shielding tube 14 includes a middle ferrite magnetic tube 141, an aluminum foil layer 142 is plated on the inner surface of the ferrite magnetic tube, a lead layer 143 is pasted on the outer surface, the ferrite magnetic tube can reduce the interference of a low-frequency magnetic field, the lightning protection effect of the cable can be improved by the cooperation of the lead layer and an aluminum foil protection layer, thereby ensuring the anti-interference effect of the cable, avoiding the interference of the cable in lightning weather, magnetic field and the like, and pasting a glass fiber layer 144 outside the lead layer, which can play roles of buffering, tensile, compression, wear resistance and the like, and greatly prolonging the service life of the cable.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the principle of the present invention, and these should also be considered as belonging to the protection scope of the present invention.
Claims (8)
1. The utility model provides a high shielding anti-interference type photoelectricity compound superhigh pressure power cable which characterized in that: the cable comprises a cable core, wherein the cable core is formed by twisting a plurality of insulation shielding wire cores, a gap of the cable core is filled with a silicon rubber filler and then is coated with a silver-plated composite electrolytic copper foil wrapping tape, a group of symmetrical multimode optical fiber units are arranged outside the silver-plated composite electrolytic copper foil wrapping tape, a cross-linked polyolefin inner sheath with the thickness of 2-3mm is extruded at the same time, a buffer type semi-conductive water blocking tape with the thickness of 0.5-1mm is wrapped after a copper wire shielding layer is woven outside the cross-linked polyolefin inner sheath, an electromagnetic shielding pipe is sleeved outside the buffer type semi-conductive water blocking tape after a steel-plastic composite tape is wrapped, and a ceramic low-smoke halogen-free polyolefin fireproof outer sheath with the thickness of 1-.
2. The high-shielding anti-interference photoelectric composite extra-high voltage power cable according to claim 1, wherein: the insulation shielding wire core comprises a conductor, a semiconductive strapping tape is wrapped outside the conductor, a conductor shielding layer, a foamed polyethylene insulating layer and an insulation shielding layer are sequentially and jointly extruded outside the semiconductive strapping tape, a silver-plated copper braided shielding net is wrapped outside the insulation shielding layer, and a Teflon corrugated hose is sleeved outside the silver-plated copper braided shielding net.
3. The high-shielding anti-interference photoelectric composite extra-high voltage power cable according to claim 1, wherein: the multimode optical fiber unit consists of a multimode optical fiber, a resin adhesive tape wrapped outside the multimode optical fiber, a perfluorinated ethylene propylene insulating layer extruded and wrapped, and a loose tube wrapped outside the perfluorinated ethylene propylene insulating layer.
4. The high-shielding anti-interference photoelectric composite extra-high voltage power cable according to claim 2, wherein: the conductor is an aluminum alloy segmented conductor.
5. The high-shielding anti-interference photoelectric composite extra-high voltage power cable according to claim 2, wherein: the volume resistivity and the surface resistance of the semi-conductive strapping tape are respectively 1 multiplied by 105The graphene composite semi-conductive tapes below omega-cm and 100 omega adopt an overlapping wrapping structure, and the covering rate is not less than 20%.
6. The high-shielding anti-interference photoelectric composite extra-high voltage power cable according to claim 2, wherein: the conductor shielding layer is prepared from an ultra-clean ultra-smooth cross-linked graphene composite high-semiconductive inner shielding material with the volume resistivity of less than 20 omega cm at the temperature of 20 ℃.
7. The high-shielding anti-interference photoelectric composite extra-high voltage power cable according to claim 1, wherein: the insulation shielding layer is prepared from an ultra-clean ultra-smooth cross-linked graphene composite high semi-conductive outer shielding material with the volume resistivity of less than 20 omega cm at the temperature of 20 ℃.
8. The high-shielding anti-interference photoelectric composite extra-high voltage power cable according to claim 1, wherein: the electromagnetic shielding pipe comprises a middle ferrite magnetic pipe, wherein an aluminum foil layer is plated on the inner surface of the ferrite magnetic pipe, a lead skin layer is pasted on the outer surface of the ferrite magnetic pipe, and a glass fiber layer is pasted outside the lead skin layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922051872.1U CN210575192U (en) | 2019-11-25 | 2019-11-25 | High-shielding anti-interference photoelectric composite ultrahigh-voltage power cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922051872.1U CN210575192U (en) | 2019-11-25 | 2019-11-25 | High-shielding anti-interference photoelectric composite ultrahigh-voltage power cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023040020A1 (en) * | 2021-09-14 | 2023-03-23 | 中天科技海缆股份有限公司 | Submarine cable |
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- 2019-11-25 CN CN201922051872.1U patent/CN210575192U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023040020A1 (en) * | 2021-09-14 | 2023-03-23 | 中天科技海缆股份有限公司 | Submarine cable |
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