CN212113263U - 500kV ultrahigh-voltage fireproof full-water-blocking cable - Google Patents
500kV ultrahigh-voltage fireproof full-water-blocking cable Download PDFInfo
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- CN212113263U CN212113263U CN202020963665.3U CN202020963665U CN212113263U CN 212113263 U CN212113263 U CN 212113263U CN 202020963665 U CN202020963665 U CN 202020963665U CN 212113263 U CN212113263 U CN 212113263U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model discloses a 500kV superhigh pressure fire prevention cable that blocks water entirely, it includes the circular inner conductor that is formed by the fan-shaped copper conductor amalgamation of polylith the outside of inner conductor by interior outside in proper order the cladding have semiconductive body shielding, insulating layer, semiconductive insulation shielding, the buffer layer that blocks water, seamless ripple aluminum pipe, separate oxygen layer, flame retardant coating, oversheath. 500kV superhigh pressure fire prevention cable that blocks water entirely, its compact structure possesses excellent fire prevention, the performance of blocking water, and the cost is lower.
Description
Technical Field
The utility model relates to the technical field of cables, concretely relates to 500kV superhigh pressure fire prevention cable that blocks water entirely.
Background
With the development of society, cities are larger and larger, the power load is higher and higher, and the safety requirement of power supply is more and more important. The urban power supply line is more and more dense and more complex. Meanwhile, due to the requirement of urban appearance, the appearance is required to be as beautiful as possible, overhead lines are not adopted as much as possible, and cables are adopted as much as possible to enter the ground. Based on above reason, present large-scale city and power station output adopt 500 kV's crosslinked polyethylene cable, accomplish the transport of large capacity electric energy through the underground, and lay underground cable and can not avoid receiving the influence of external factors such as rainwater, conflagration to cause destructive injury to the cable, thereby cause great economic loss, will threaten life safety more seriously, so design a fire prevention, 500kV ultrahigh voltage cable that blocks water entirely is imperative.
SUMMERY OF THE UTILITY MODEL
To the problem, an object of the utility model is to provide a 500kV superhigh pressure fire prevention cable that blocks water entirely, its compact structure possesses excellent fire prevention, water blocking performance, and the cost is lower.
In order to achieve the purpose, the utility model provides a 500kV superhigh pressure fire prevention cable that blocks water entirely, it includes the circular inner conductor that is formed by the fan-shaped copper conductor amalgamation of polylith the outside of inner conductor has semi-conductive conductor shielding, insulating layer, semi-conductive insulation shielding, water blocking tape buffer layer, seamless ripple aluminum pipe, separates oxygen layer, flame retardant coating, oversheath by the cladding in proper order outside to.
Further, the number of the fan-shaped copper conductors is five, and the fan-shaped copper conductors are separated by insulating paper.
Further, the semiconductive conductor shield includes a semiconductive nylon tape wrapped over the inner conductor and a semiconductive shield wrapped outside the semiconductive nylon tape.
Further, the material of the insulating layer is ultra-clean crosslinked polyethylene insulation.
Further, the water-blocking tape buffer layer is formed by wrapping 2 layers of semi-conductive water-blocking tapes.
Furthermore, a metal wire shielding cloth belt is wrapped outside the water blocking tape buffer layer.
Further, the oxygen isolation layer is formed by extruding halogen-free low-smoke high-flame-retardant oxygen isolation materials.
Furthermore, the fireproof layer is formed by wrapping a ceramic silicon rubber belt.
Further, the outer sheath is made of flame-retardant polyethylene.
Further, a layer of semi-conductive sheath layer is extruded outside the outer sheath.
The utility model provides a 500kV superhigh pressure fire prevention cable that blocks water entirely compares in prior art, has following technological effect:
by designing the structure that the inner conductor is formed by splicing a plurality of fan-shaped copper conductors, the skin effect in the process of transmitting electric energy is effectively reduced, the utilization rate of transmission can be improved, the longitudinal water blocking effect is achieved, and meanwhile, the cable is more flexible and convenient to bend; the extruded seamless corrugated aluminum pipe structure is adopted, aluminum is a metal material with excellent performance, moisture cannot permeate through the seamless corrugated aluminum pipe structure, and meanwhile, the multilayer water-blocking tape buffer layer is arranged in the aluminum pipe, so that the water-blocking tape can rapidly expand when meeting water, can effectively block moisture from entering the seamless corrugated aluminum pipe structure, and has a radial water-blocking effect; in addition, outside flame retardant coating, messenger are constituteed to the outside oxygen layer, flame retardant coating and the oversheath that separate that the outside of inner conductor set up the cable has good fire behavior, extension cable life, the cable especially adapts to large-scale city and power station output and uses.
Drawings
Fig. 1 is the embodiment of the utility model provides a 500kV superhigh pressure fire prevention is the schematic structure drawing of the cable that blocks water entirely.
The insulation structure comprises a fan-shaped copper conductor 1, a semi-conductive conductor shield 2, a semi-conductive nylon tape 21, a semi-conductive nylon tape 22, a semi-conductive shield 3, an insulation layer 4, a semi-conductive insulation shield 5, a water blocking tape buffer layer 6, a metal wire shielding cloth tape 7, a seamless corrugated aluminum pipe 8, an oxygen isolation layer 9, a fire prevention layer 10, an outer sheath 11, a semi-conductive sheath layer 12 and insulation paper.
Detailed Description
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the 500kV ultrahigh voltage fireproof full water-blocking cable according to the embodiment of the present invention includes a circular inner conductor formed by splicing a plurality of fan-shaped copper conductors 1, and a semi-conductor shield 2, an insulating layer 3, a semi-conductive insulating shield 4, a water-blocking tape buffer layer 5, a seamless corrugated aluminum pipe 7, an oxygen-isolating layer 8, a fireproof layer 9, and an outer sheath 10 are sequentially coated outside the inner conductor from inside to outside; the oxygen-isolating layer 8 is formed by extruding halogen-free low-smoke high-flame-retardant oxygen-isolating materials; the fireproof layer 9 is formed by wrapping a ceramic silicon rubber belt; the outer sheath 10 is made of flame-retardant polyethylene;
by designing the structure that the inner conductor is formed by splicing a plurality of fan-shaped copper conductors 1, the skin effect in the process of transmitting electric energy is effectively reduced, the utilization rate of transmission can be improved, the longitudinal water blocking effect is achieved, and meanwhile, the cable is more flexible and convenient to bend; an extruded seamless corrugated aluminum pipe 7 structure is adopted, aluminum is a metal material with excellent performance, moisture cannot permeate through the aluminum pipe, and meanwhile, a plurality of layers of water-blocking tape buffer layers 5 are arranged in the aluminum pipe, so that the water-blocking tape can rapidly expand when meeting water, can effectively block moisture from entering and has a radial water-blocking effect; in addition, outside flame retardant coating 9 is constituteed to the outside oxygen layer 8, flame retardant coating 9 and the oversheath 10 that separate that the outside of inner conductor set up, makes the cable has good fire behavior, extension cable life, the cable especially adapts to large-scale city and power station output and uses.
Further, referring to fig. 1, the number of the fan-shaped copper conductors 1 is five, and each fan-shaped copper conductor 1 is isolated by corrugated insulating paper 12; and every fan-shaped copper conductor 1 is twisted by the copper monofilament and is formed and add the yarn that blocks water, thereby makes the cable has good vertical effect that blocks water, and the cable also has the flexibility to be convenient for crooked more simultaneously.
Further, referring to fig. 1, the semiconductive conductor shield 2 includes a semiconductive nylon tape 21 wrapped over the inner conductor and a semiconductive shield 22 wrapped outside the semiconductive nylon tape 21. The semiconductive nylon belt 21, the semiconductive shield 22 and the semiconductive insulation shield 4 are all made of semiconductive materials and are tightly and smoothly combined with the insulation layer 3, so that the cable field in the insulation layer 3 is prevented from being deformed and uniformly distributed after the cable is electrified, the electric field effect of the semiconductive shield 22 can be uniform after the semiconductive nylon belt 21 is wrapped, the conductor can be prevented from being embedded by the material extruded on the semiconductive shield 22, and the shielding effect is better.
Further, referring to fig. 1, the material of the insulating layer 3 is ultra-clean cross-linked polyethylene insulation, and the thickness of the insulating layer 3 is 33 mm.
The water blocking belt buffer layer 5 with outside water blocking layer is constituteed in the cooperation of seamless ripple aluminum pipe 7 and oversheath 10, in order to guarantee the cable has the better effect of blocking water. Furthermore, the water-blocking tape buffer layer 5 is formed by wrapping 2 layers of the semiconductive water-blocking tape, the thickness of the semiconductive water-blocking tape is 2.0mm, the wrapping is covered, the covering rate is not lower than 30%, and the semiconductive water-blocking tape can expand rapidly when meeting water and can effectively block the entry of water; the seamless corrugated aluminum pipe 7 is an extruded aluminum sheath binding line, and the thickness of the aluminum pipe is not less than 3.0 mm; the aluminum pipe is extruded into a corrugated shape, asphalt is coated on the surface of the corrugated aluminum sheath to prevent the aluminum from being corroded, the corrugated aluminum sheath can improve the bending performance, and the aluminum is a metal material with excellent performance and cannot permeate water; the outer sheath 10 is made of extruded flame-retardant polyethylene with an entrance, the thickness of the polyethylene is not less than 6.0mm, the molecular density of the polyethylene is low, and the polyethylene belongs to a nonpolar molecule composition, so that a good water blocking effect is achieved.
The oxygen isolation layer 8, the fire protection layer 9 and the outer sheath 10 form an external fire protection layer 9, further, the oxygen isolation layer 8 adopts a halogen-free low-smoke high-fire-retardant oxygen isolation material which is agglomerated during combustion, so that the continuation of cable combustion is prevented, heat transfer is blocked, the flame retardance is realized, the contact between the inner layer structure of the cable and oxygen is isolated, and the fireproof effect is effectively realized; the fireproof layer 9 is formed by wrapping 4 layers of ceramic silicon rubber belts, the thickness of the ceramic silicon rubber belts is 0.2mm, the ceramic silicon rubber belts are overlapped and wrapped, the covering rate is not lower than 20%, and the ceramic silicon rubber belts can be bonded into a ceramic shell under the condition of flame or no flame at 350-1000 ℃, so that excellent fireproof and fireproof performance is achieved; the outer sheath 10 is made of imported flame-retardant polyethylene, the oxygen index is not less than 40, the high oxygen index is one of the flame-retardant performance indexes of the plastic, the imported flame-retardant polyethylene is made of the oxygen index, the flame-retardant performance of the plastic is guaranteed, and the excellent fireproof performance of the cable is guaranteed by combining the oxygen isolation layer 8 and the fireproof layer 9.
Further, referring to fig. 1, the water blocking tape buffer layer 5 is wrapped with a metal wire shielding cloth tape 6, so that the influence of leakage current on the cable can be effectively reduced, and a protection effect is achieved.
Further, referring to fig. 1, a semiconductive jacket layer 11 is extruded outside the outer jacket 10. Therefore, the cable drops into the operation back, can leak into the ground surface sensing electricity effectively, improves the safety in utilization of cable.
To sum up, the 500kV ultrahigh voltage fireproof full water-blocking cable of the utility model adopts a structure that a plurality of fan-shaped copper conductors 1 are spliced together as the inner conductor, so as to effectively reduce the skin effect in the process of transmitting electric energy, improve the utilization rate of transmission, achieve the longitudinal water-blocking effect, and meanwhile, the cable is more flexible and convenient to bend; an extruded seamless corrugated aluminum pipe 7 structure is adopted, aluminum is a metal material with excellent performance, moisture cannot permeate through the aluminum pipe, and meanwhile, a plurality of layers of water-blocking tape buffer layers 5 are arranged in the aluminum pipe, so that the water-blocking tape can rapidly expand when meeting water, can effectively block moisture from entering and has a radial water-blocking effect; in addition, outside flame retardant coating 9 is constituteed to the outside oxygen layer 8, flame retardant coating 9 and the oversheath 10 that separate that the outside of inner conductor set up, makes the cable has good fire behavior, extension cable life, the cable especially adapts to large-scale city and power station output and uses.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a 500kV superhigh pressure fire prevention cable that blocks water entirely, its characterized in that includes the circular inner conductor that is formed by the concatenation of polylith fan-shaped copper conductor, the outside of inner conductor from inside to outside in proper order the cladding have semi-conductive conductor shielding, insulating layer, semi-conductive insulation shielding, water blocking tape buffer layer, seamless ripple aluminum pipe, separate oxygen layer, flame retardant coating, oversheath.
2. The 500kV ultrahigh-voltage fireproof all-water-blocking cable according to claim 1, wherein the number of the fan-shaped copper conductors is five, and each fan-shaped copper conductor is isolated from each other by insulating paper.
3. The 500kV ultra-high voltage fire-resistant all-water-blocking cable of claim 1, wherein the semi-conductive conductor shield comprises a semi-conductive nylon tape coated on the inner conductor and a semi-conductive shield coated outside the semi-conductive nylon tape.
4. The 500kV ultrahigh-voltage fireproof all-water-blocking cable according to claim 1, wherein the insulating layer is made of an ultraclean crosslinked polyethylene insulation.
5. The 500kV ultrahigh-voltage fireproof all-water-blocking cable according to claim 1, wherein the water-blocking tape buffer layer is formed by wrapping 2 layers of semi-conductive water-blocking tapes.
6. The 500kV ultrahigh-voltage fireproof all-water-blocking cable according to claim 1, wherein a metal wire shielding cloth tape is wrapped outside the water-blocking tape buffer layer.
7. The 500kV ultrahigh-voltage fireproof all-water-blocking cable according to claim 1, wherein the oxygen-blocking layer is formed by extruding halogen-free low-smoke high-flame-retardant oxygen-blocking materials.
8. The 500kV ultrahigh-voltage fireproof all-water-blocking cable according to claim 1, wherein the fireproof layer is formed by wrapping a ceramic silicon rubber tape.
9. The 500kV ultrahigh-voltage fireproof all-water-blocking cable according to claim 1, wherein the outer sheath is made of flame-retardant polyethylene.
10. The 500kV ultrahigh-voltage fireproof all-water-blocking cable according to claim 1, wherein a semi-conductive sheath layer is extruded outside the outer sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020963665.3U CN212113263U (en) | 2020-05-29 | 2020-05-29 | 500kV ultrahigh-voltage fireproof full-water-blocking cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020963665.3U CN212113263U (en) | 2020-05-29 | 2020-05-29 | 500kV ultrahigh-voltage fireproof full-water-blocking cable |
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| CN212113263U true CN212113263U (en) | 2020-12-08 |
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| CN202020963665.3U Active CN212113263U (en) | 2020-05-29 | 2020-05-29 | 500kV ultrahigh-voltage fireproof full-water-blocking cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113948250A (en) * | 2021-12-16 | 2022-01-18 | 尚纬股份有限公司 | Ultrahigh-voltage cable and auxiliary equipment for production thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113948250A (en) * | 2021-12-16 | 2022-01-18 | 尚纬股份有限公司 | Ultrahigh-voltage cable and auxiliary equipment for production thereof |
| CN113948250B (en) * | 2021-12-16 | 2022-03-15 | 尚纬股份有限公司 | Ultrahigh-voltage cable and auxiliary equipment for production thereof |
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