CN101887777B - Lightning protection power cable with reinforced layer - Google Patents

Lightning protection power cable with reinforced layer Download PDF

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Publication number
CN101887777B
CN101887777B CN2009101407194A CN200910140719A CN101887777B CN 101887777 B CN101887777 B CN 101887777B CN 2009101407194 A CN2009101407194 A CN 2009101407194A CN 200910140719 A CN200910140719 A CN 200910140719A CN 101887777 B CN101887777 B CN 101887777B
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China
Prior art keywords
lightning
cable
cable core
power cable
screen
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CN2009101407194A
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CN101887777A (en
Inventor
王柏兴
钱俊
张喜生
张兴飞
刘焱鑫
陈永伟
鲁芳
谭秋琼
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CHANGSHU ZHONGLIAN PHOTOELECTRICITY NEW STUFF CO LTD
Jiangsu Zhongli Group Co Ltd
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Zhongli Technology Group Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/14Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

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Abstract

The invention discloses a lightning protection power cable, which comprises a cable core for transmitting power and a coating layer for coating the cable core; wherein the coating layer comprises: a shielding layer for shielding the cable core; an outer wrapping tape layer wrapping the shielding layer; an outer sheath for covering the outer wrapping layer; and the grounding layer is arranged between the cable core and the shielding layer. The invention increases the anti-lightning capacity of the power cable by arranging the grounding layer, namely, the grounding layer instantly guides the lightning entering the cable to the ground when lightning strike occurs, thereby ensuring the safety of the power cable and the base station equipment connected with the power cable.

Description

The lightning-proof power cable that reinforced layer is arranged
Technical field
The present invention relates to the electric wire technology, particularly a kind of can lightning protection and be suitable for the lightning-proof power cable that reinforced layer is arranged of outdoor use.
Background technology
Mostly addressing is spaciousness, highland or mountain area based on base station construction; With a varied topography and work under bad environment; The equipment of base station suffers the infringement of thunder and lightning weather easily; The cable of base station outdoor is especially low and directly receive ultraviolet irradiation at the northern area winter temperature, is prone to agingly and damaged, works thereby influence the base station.And, certain shielding anti-interference should be arranged as the cable that communication base station uses, the electromagnetic field of guaranteeing itself does not cause other signals and disturbs and not by the interference of external electromagnetic field to cable core.
In addition, because cable might be struck by lightning,, will cause the heavy losses of communications facility in case the thunderbolt incident takes place.
Summary of the invention
The purpose of this invention is to provide a kind of can lightning protection and be suitable for the lightning-proof power cable that reinforced layer is arranged of outdoor use,
In addition, the present invention also improves the intensity of cable through equipment reinforced layer on power cable, thereby satisfies the required special climate requirement of communication base station under the outdoor environment.
According to a first aspect of the invention, a kind of lightning-proof power cable of the present invention comprises:
The coating of the cable core of transferring electric power and the said cable core of lining;
Wherein, said coating comprises:
Shield the screen of said cable core;
Coat the outer belting layer of said screen;
Coat the oversheath of said outer belting layer; And
Be arranged on the ground plane between said cable core and the said screen.
The present invention is through being provided with the increase electric power anti-thunderbolt ability of cable of ground plane, and when promptly thunderbolt taking place, ground plane moment will get into the thunder and lightning importing the earth of cable, thereby guarantee the safety of power cable and the base station equipment that is connected power cable.
Said ground plane is configured to: by the oblique wrapped said cable core of bundle strand copper wire of stranded copper wire bundle strand, its lay of lapping is 18~28 times of said conductor assembly outer diameter.
Said ground plane can also be configured to coat the metal level and the wire netting of cable core.
According to second aspect present invention, another kind of lightning-proof power cable of the present invention comprises:
Cover the cable core that is used for transferring electric power of inner sheath outward;
Shield the screen of said cable core;
Coat the outer belting layer of said screen;
Coat the oversheath of said outer belting layer; And
Be arranged on the ground connection outer conductor between said cable core and the said screen.
The present invention is through the increase electric power anti-thunderbolt ability of cable of the outer conductor that ground connection is set, and when promptly thunderbolt taking place, ground plane moment will get into the thunder and lightning importing the earth of cable, thereby guarantee the safety of power cable and the base station equipment that is connected power cable.
Wherein said ground connection outer conductor is the bundle strand copper wire of solid conductor or stranded copper wire bundle strand, and oblique wrapped said inner sheath, and its lay of lapping is 18~28 times of said conductor assembly outer diameter.
Wherein said screen adopts the wrapped said outer conductor of copper strips to form, and wrapped Duplication is more than 25%.
Wherein said cable core comprises: at least two insulated cores; Coat the interior belting layer of said insulated wire cores; And the inner sheath that coats said interior belting layer.
Wherein said insulated wire cores comprises conductor and the insulating barrier that coats said conductor, and said insulated wire cores is 2~5.
In addition, between said insulated wire cores, be filled with the filler material,, improve the anti-pressure ability of cable core so that form solid cable core.
Wherein said oversheath adopts the TPO material to process; Said insulating barrier adopts polyolefine material to process; Said inner sheath employing has fire-retardant TPO material and processes; And belting layer all adopts polyester material to process with outer belting layer in said.
Wherein said conductor forms by stranded copper wire is stranded, and the cross-sectional area of said conductor is identical with the cross-sectional area of said ground connection outer conductor.
Compared with prior art, earth connection according to the invention is rearranged by the oblique bag of stranded copper wire between cable core and screen, has effectively conducted instantaneous high pressure, avoids thunder and lightning that communication equipment is caused damage.And said earth connection is with the copper strips screen outward, and effectively the electromagnetic field of shielded type cable generation improves the serviceability of cable to the interference of other telecommunication cable signals.Said oversheath adopts cold-resistant low-smoke halogen-free polyolefin class material; Its low smoke and zero halogen, environmental, and uvioresistant is also cold-resistant; Therefore a kind of lightning-proof power cable with reinforced layer of the present invention can satisfy communication base station in the abominable workplace operate as normal of environment, and its adaptive capacity to environment is strong.
Below in conjunction with accompanying drawing details of the present invention is elaborated.
Description of drawings
Fig. 1 is the sketch map that lightning-proof power cable first embodiment of reinforced layer is arranged of the present invention;
Fig. 2 is the sketch map that lightning-proof power cable second embodiment of reinforced layer is arranged of the present invention.
Drawing reference numeral explanation: 1-insulated wire cores; The 11-conductor; The 12-insulating barrier; The 2-filler; Belting layer in the 3-; 4-ground plane or outer conductor; The outer belting layer of 5-; The 6-inner sheath; The 7-screen; The 8-oversheath; The 9-cable core.
Embodiment
Lightning-proof power cable of the present invention is a kind of lightning protection and can strengthens cable intensity power cable.
Fig. 1 has shown first embodiment that the lightning-proof power cable of reinforced layer is arranged of the present invention, and Fig. 2 has shown second embodiment of lightning-proof power cable of the present invention.In first embodiment, lightning-proof power cable has two insulated cores 1.In a second embodiment, lightning-proof power cable has three insulated cores 1.
Put it briefly, lightning-proof power cable of the present invention comprises:
The cable core 9 of transferring electric power and the coating of the said cable core 9 of lining;
Wherein, said coating comprises:
Shield the screen 7 of said cable core 9;
Coat the outer belting layer 5 of said screen 7;
Coat the oversheath 8 of said outer belting layer 5; And
Be arranged on the ground plane 4 between said cable core 9 and the said screen 7.
Can adopt various ways to form ground plane 4,, perhaps utilize wire netting to form ground plane such as utilizing metal level to form ground plane.
The present invention preferentially selects to utilize bundle strand copper wire to form ground plane, just is configured to ground plane 4: by the oblique wrapped said cable core 9 of bundle strand copper wire of stranded copper wire bundle strand, its lay of lapping is 18~28 times of said conductor assembly outer diameter.
Because ground plane is set in power cable; Therefore increased the anti-thunderbolt ability of power cable; Like this when thunderbolt takes place, ground plane moment just can import the earth rapidly with the thunder and lightning of entering cable, thereby guarantees the safety of power cable and the base station equipment that is connected power cable.
In addition, the present invention with outer belting layer 5 and the following interior belting layer 3 that will explain as reinforced layer, so that increase the intensity of cable.
More particularly, the lightning-proof power cable that provides of first embodiment shown in Figure 1 of the present invention comprises:
Cover the cable core that is used for transferring electric power 9 of inner sheath 6 outward;
Shield the screen 7 of said cable core 9;
Coat the outer belting layer 5 of said screen 7;
Coat the oversheath 8 of said outer belting layer 5; And
Be arranged on the ground connection outer conductor 4 between said cable core 9 and the said screen 7.
Ground connection outer conductor 4 can be the bundle strand copper wire of single copper conductor or stranded copper wire bundle strand, and oblique wrapped said inner sheath 6, and its lay of lapping is 18~28 times of said conductor assembly outer diameter.
In theory, ground connection outer conductor 4 is ground connection in any place, but in actual conditions, ground connection outer conductor 4 has been preferably in people or unmanned machine room ground connection.Outer conductor 4 can effectively conduct instantaneous high pressure, thereby can avoid thunder and lightning that communication equipment is caused damage.
Screen 7 for example can adopt that the wrapped said outer conductor 4 of 0.1mm copper strips forms, and wrapped Duplication is more than 25%.Screen 7 not only can shield electromagnetic field that cable core 9 or insulated wire cores 1 produce itself in order to avoid to the interference of other telecommunication cable signal, but also can shield the interference of external electromagnetic field to cable core 9.The lapping direction of copper strips lapping direction and ground connection outer conductor 5 is opposite.
On the other hand, owing to the screen 7 direct wrapped institute outer conductors of processing by copper strips 4, make screen 7 and outer conductor 4 connect into earthing conductor, thereby strengthened the ability that instantaneous thunder and lightning high pressure is conducted in the present invention.That is to say,, reduced to draw the resistivity of thunder earthing conductor greatly, thereby improved lightning protection effect owing to utilize screen 7 and outer conductor 4 these two earthing conductors to draw thunder.
Another characteristics of the present invention are that oversheath 8 adopts the TPO material with low smoke and zero halogen characteristic, not only helps environmental protection, and cold-resistant and uvioresistant, thereby makes power cable of the present invention be adapted at outdoor long-term the use.
Cable core 9 can comprise: at least two insulated cores 1; Coat the interior belting layer 3 of said insulated wire cores 1; And the inner sheath 6 that coats said interior belting layer 3.
As stated, interior belting layer 3 can be strengthened the intensity of power cable.
Said insulated wire cores 1 comprises conductor 11 and the insulating barrier 12 that coats said conductor 11; Insulated wire cores 1 is generally 2.Owing to have the space between the insulated wire cores 1; Its crushing resistance is weakened; The present invention is filled with the filler material 2 such as PP fiber or mineral wool rope between said insulated wire cores 1 for this reason, so that add the space between the real insulated wire cores 1, thus the compressive property of the cable that increases electric power.
In the actual cable production process, insulated wire cores 1 twists together with filler material 2 each other.
Oversheath 7 adopts cold-resistant low-smoke halogen-free polyolefin class material to process, so that guarantee power cable operate as normal under low temperature environment.
Inner sheath 6 can adopt to have fire-retardant TPO material and processes; Interior belting layer 3 all can adopt polyester material to process with outer belting layer 5; Insulating barrier 12 can adopt the cross-linked polyolefin material to process.
Conductor 11 can form by stranded copper wire is stranded, and the cross-sectional area of conductor 11 is identical with the cross-sectional area of said ground connection outer conductor.Can adopt commaterial to make conductor 11 and ground connection outer conductor like this, thereby make things convenient for production.
The difference of the second embodiment of the invention shown in Figure 2 and first embodiment only is that insulated wire cores 1 has three, and is Chinese character pin-shaped arrangement.Insulated wire cores 1 also can be a plurality of three, for example are five.
Of the present invention between cable core and screen ground plane or ground connection outer conductor 4 can effectively conduct instantaneous high pressure, avoid thunder and lightning that communication equipment is caused damage.And said earth connection is with the copper strips screen outward, and effectively shielded type cable improves the serviceability of cable to the interference of other telecommunication cable signals.Said oversheath adopts cold-resistant low-smoke halogen-free polyolefin class material; Its low smoke and zero halogen, environmental, and uvioresistant is also cold-resistant; Therefore lightning-proof power cable of the present invention can satisfy communication base station in the abominable workplace operate as normal of environment, and its adaptive capacity to environment is strong.
Although preceding text specify the present invention, the invention is not restricted to this, those skilled in the art of the present technique can carry out various modifications according to principle of the present invention.Therefore, all modifications of doing according to the principle of the invention all are to be understood that to falling into protection scope of the present invention.

Claims (7)

1. lightning-proof power cable that reinforced layer is arranged comprises:
The cable core of transferring electric power (9); And
The coating of said cable core (9) is covered;
Wherein, said coating comprises:
Shield the ground shield (7) of said cable core (9);
Coat the outer belting layer (5) of said screen (7);
Coat the oversheath (8) of said outer belting layer (5); And
Be arranged on the ground plane (4) that being used between said cable core (9) and the said screen (7) will get into the thunder and lightning importing the earth of cable;
Wherein, said ground plane (4) is configured to: by the bundle strand oblique wrapped said cable core of copper wire (9) of stranded copper wire bundle strand, its lay of lapping is 18~28 times of said conductor assembly outer diameter;
Wherein, said screen (7) adopts the wrapped said ground plane of copper strips (4), and wrapped Duplication is more than 25%;
Wherein, ground plane (4) causes damage to communication equipment to avoid thunder and lightning in that people or unmanned machine room ground connection are arranged.
2. lightning-proof power cable comprises:
Cover the cable core that is used for transferring electric power (9) of inner sheath (6) outward;
Shield the ground shield (7) of said cable core (9);
Coat the outer belting layer (5) of said screen (7);
Coat the oversheath (8) of said outer belting layer (5); And
Be arranged on the ground connection outer conductor (4) between said cable core (9) and the said screen (7);
Wherein, said ground connection outer conductor (4) is the bundle strand copper wire of stranded copper wire bundle strand, and oblique wrapped said inner sheath (6), and its lay of lapping is 18~28 times of said conductor assembly outer diameter;
Wherein, said screen (7) adopts the wrapped said ground connection outer conductor of copper strips (4), and wrapped Duplication is more than 25%;
Wherein, ground connection outer conductor (4) causes damage to communication equipment to avoid thunder and lightning in that people or unmanned machine room ground connection are arranged.
3. lightning-proof power cable according to claim 1 and 2, wherein said cable core (9) comprising:
At least two insulated cores (1);
Coat the interior belting layer (3) of said insulated wire cores (1); And
Coat the inner sheath (6) of said interior belting layer (3).
4. lightning-proof power cable according to claim 3, wherein said insulated wire cores (1) comprise conductor (11) and coat the insulating barrier (12) of said conductor (11).
5. lightning-proof power cable according to claim 4, wherein said insulated wire cores (1) is 2~5.
6. lightning-proof power cable according to claim 5 wherein is filled with the filler material between said insulated wire cores (1).
7. lightning-proof power cable according to claim 3, wherein said oversheath (7) adopt the TPO material to process.
CN2009101407194A 2009-05-11 2009-05-11 Lightning protection power cable with reinforced layer Active CN101887777B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2009101407194A CN101887777B (en) 2009-05-11 2009-05-11 Lightning protection power cable with reinforced layer

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CN101887777B true CN101887777B (en) 2012-05-02

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Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102842369B (en) * 2011-06-24 2015-05-20 上海市高桥电缆厂有限公司 Safety electric wire
CN102982884A (en) * 2012-11-28 2013-03-20 安徽埃克森科技集团有限公司 Tensile type power cable
CN103325489B (en) * 2013-07-01 2015-05-13 中利科技集团股份有限公司 Lightning protected cable for communication base station
CN103985445B (en) * 2014-06-07 2016-08-17 国网山东省电力公司章丘市供电公司 Separate type lightning protected cable
CN106782804A (en) * 2016-12-26 2017-05-31 国网山东省电力公司临沂供电公司 Insulated conductor is pressed in a kind of anti-lightning strike type
CN107331456A (en) * 2017-06-28 2017-11-07 代卫东 A kind of lightning protection tension communication cable
CN107293359A (en) * 2017-06-28 2017-10-24 代卫东 A kind of Novel lightning-proof Compression-resistincable cable
CN107086080A (en) * 2017-06-28 2017-08-22 代卫东 A kind of heat-resisting lightning protection control cable
CN107316684A (en) * 2017-06-28 2017-11-03 代卫东 A kind of lightning protected cable
CN107293363A (en) * 2017-06-28 2017-10-24 代卫东 A kind of high lightning protection tension communication cable of mechanical performance
CN107293356A (en) * 2017-06-28 2017-10-24 代卫东 A kind of Novel lightning-proof cable
CN107248426A (en) * 2017-06-28 2017-10-13 代卫东 A kind of lightning protected cable of high mechanical strength
CN107293357A (en) * 2017-06-28 2017-10-24 代卫东 A kind of heat-resisting measuring body lightning protection control cable

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0398593B1 (en) * 1989-05-15 1995-09-13 Westinghouse Electric Corporation Apparatus for detecting excessive chafing of a cable arrangement against an electrically grounded structure
CN2314449Y (en) * 1997-10-23 1999-04-14 常州市东方特种电缆装备厂 shielding power cable for frequency conversion circuit
CN201174272Y (en) * 2008-07-31 2008-12-31 上海快鹿电线电缆有限公司 Soft conductor flame-retardant protective sleeve shielded power cable
CN201402668Y (en) * 2009-05-11 2010-02-10 中利科技集团股份有限公司 Lightning-proof power cable

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0398593B1 (en) * 1989-05-15 1995-09-13 Westinghouse Electric Corporation Apparatus for detecting excessive chafing of a cable arrangement against an electrically grounded structure
CN2314449Y (en) * 1997-10-23 1999-04-14 常州市东方特种电缆装备厂 shielding power cable for frequency conversion circuit
CN201174272Y (en) * 2008-07-31 2008-12-31 上海快鹿电线电缆有限公司 Soft conductor flame-retardant protective sleeve shielded power cable
CN201402668Y (en) * 2009-05-11 2010-02-10 中利科技集团股份有限公司 Lightning-proof power cable

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