CN114596993A - Lightning protection photoelectric cable - Google Patents
Lightning protection photoelectric cable Download PDFInfo
- Publication number
- CN114596993A CN114596993A CN202210199490.7A CN202210199490A CN114596993A CN 114596993 A CN114596993 A CN 114596993A CN 202210199490 A CN202210199490 A CN 202210199490A CN 114596993 A CN114596993 A CN 114596993A
- Authority
- CN
- China
- Prior art keywords
- insulating layer
- cable
- sheath
- layer
- lightning protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- 239000013307 optical fiber Substances 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims abstract description 9
- 239000004020 conductor Substances 0.000 claims description 19
- 239000012188 paraffin wax Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 32
- 230000003068 static effect Effects 0.000 abstract description 15
- 208000025274 Lightning injury Diseases 0.000 abstract description 13
- 230000005611 electricity Effects 0.000 description 8
- 239000004973 liquid crystal related substance Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 238000009825 accumulation Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/005—Power cables including optical transmission elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/003—Power cables including electrical control or communication wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/025—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of helicoidally wound wire-conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/028—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients with screen grounding means, e.g. drain wires
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
Landscapes
- Communication Cables (AREA)
Abstract
The invention belongs to the field of cables, and particularly relates to a lightning protection photoelectric cable. It comprises the following steps: the core wire, the communication layer, the inner insulating layer, the metal sheath, the outer insulating layer and the sheath layer are sequentially arranged from inside to outside; the core wire is a conductive wire, and the communication layer is provided with an optical fiber wire; the lower end of the communication layer is provided with a sunken groove, the inner insulating layer is provided with a bulge matched with the sunken groove and corresponds to the sunken groove, and the outer part of the inner insulating layer is provided with an installation groove; the metal sheath comprises a sheath piece and a plurality of shielding wires; the sheath piece is provided with a notch, and the shielding wires are arranged on the outer surface of the inner insulating layer corresponding to the notch of the sheath piece; the sheath piece is provided with a clamping part corresponding to the mounting groove, and the clamping part is inwards inserted in the mounting groove; the outer insulating layer wraps the outer side of the metal sheath, and the sheath layer wraps the outer side of the outer insulating layer. The optical cable effectively improves the lightning protection performance of the existing optical cable; the lightning protection performance is greatly improved by reducing the overall static charge residue of the optical cable, and the lightning stroke risk of the optical cable is reduced.
Description
Technical Field
The invention belongs to the field of cables, and particularly relates to a lightning protection photoelectric cable.
Background
The optical cable is a functional cable for simultaneously realizing optical signal transmission and electric power transmission, and is a common multifunctional cable with extremely high use value.
In some special installation environments, optical cables are further required to meet a variety of performance requirements. For example, submarine optical cables laid on the seabed need to meet the performances of high pressure resistance, water resistance, seizure resistance and the like, optical cables erected across the sea need to meet the performances of high distortion resistance, high strength and the like, and in some areas with high lightning occurrence, good lightning protection performance needs to be met.
Generally, the optical cable is used for lightning protection by arranging a lightning conductor. However, because some areas are not suitable for installing a lightning conductor, and the existing method is difficult to effectively avoid lightning and reduce the damage caused by lightning to the optical cable, it is an industry difficult problem how to make the optical cable have more excellent lightning protection performance starting from the optical cable structure.
Disclosure of Invention
The invention provides a lightning protection optical cable, aiming at solving the problems that the existing optical cable has few lightning protection means and strong limitation, and the optical cable does not have good lightning protection performance and the like.
The invention aims to:
firstly, the lightning protection and lightning protection performance of the optical cable is effectively improved;
secondly, the damage of lightning stroke to the optical cable can be effectively reduced;
and thirdly, the optical cable is guaranteed to have more space for arranging the conducting wires and the optical fiber lines.
In order to achieve the purpose, the invention adopts the following technical scheme.
A lightning protected photovoltaic cable comprising:
the core wire, the communication layer, the inner insulating layer, the metal sheath, the outer insulating layer and the sheath layer are sequentially arranged from inside to outside;
the core wire is a conductive wire, the communication layer is arranged on the outer side of the core wire, and the communication layer is provided with an optical fiber wire for communication while protecting the core wire;
the lower end of the cross section of the communication layer is provided with a trap groove along the axial direction of the cable, the inner insulating layer is coated on the outer side of the communication layer and is provided with a bulge matched with the trap groove, the bulge is in clamping fit with the trap groove and corresponds to the trap groove, and the outer surface of the inner insulating layer is provided with an installation groove;
the metal sheath is arranged on the outer side of the inner insulating layer and comprises a sheath piece and a plurality of shielding wires;
the sheath piece is arc-shaped on the radial section of the cable and is provided with notches, the shielding wires are arranged on the outer surface of the inner insulating layer corresponding to the notches of the sheath piece, and the shielding wires are arranged at equal intervals among the notches of the sheath piece;
the sheath piece is provided with a clamping part which is protruded inwards and outwards along the radial direction of the cable corresponding to the installation groove, and the clamping part is inwards inserted into the installation groove and clamped and matched with the inner insulating layer to realize fixation;
the outer insulating layer wraps the outer side of the metal sheath, and the sheath layer wraps the outer side of the outer insulating layer.
As a preference, the first and second liquid crystal compositions are,
the conductive wire is a copper stranded wire;
the optical fiber line is an optical fiber bundle formed by a single optical fiber or a plurality of optical fibers.
As a preference, the first and second liquid crystal compositions are,
the sheath piece and the shielding wire are made of metal materials.
As a preference, the first and second liquid crystal compositions are,
the sheath piece is arc-shaped on the radial section of the cable and is embedded or tightly pressed on the outer surface of the inner insulating layer;
the shielding wires are embedded or tightly pressed on the outer surface of the inner insulating layer along the axial direction.
As a matter of preference,
the center of the clamping part is provided with a wire hole along the axial direction of the cable, and a spiral wire is arranged in the wire hole.
As a preference, the first and second liquid crystal compositions are,
the spiral conductor is made of copper-clad aluminum metal wires or copper conductors.
As a preference, the first and second liquid crystal compositions are,
the outer end of the clamping portion of the sheathing member penetrates through the outer insulating layer and extends into the sheathing layer along the radial direction.
As a preference, the first and second liquid crystal compositions are,
a filling groove is arranged in the inner insulating layer, is arranged along the axial direction of the cable, is arc-shaped on the radial section of the cable, and is circumferentially wound from one side of the clamping part to the other side of the clamping part;
and filling materials are arranged in the filling groove.
As a preference, the first and second liquid crystal compositions are,
the filler is paraffin.
As a preference, the first and second liquid crystal compositions are,
the melting point of the paraffin is 57-63 ℃.
The invention has the beneficial effects that:
1) static electricity release and grounding lightning stroke current release are realized by replacing an external lightning conductor with an internal spiral conductor, and the lightning protection performance of the optical cable is effectively improved;
2) by reducing the static charge residue of the whole optical cable, lightning stroke can be greatly avoided, and the lightning stroke risk of the optical cable is reduced;
3) through the filling setting of paraffin, can further avoid the inside electric breakdown because static charge is amasss or the thunderstorm day takes place of optical cable.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the static charge distribution of the optical cable of the present invention under high voltage energization;
FIG. 3 is a schematic illustration of static charge distribution for a comparative optical cable under high voltage energization;
in the figure: 100 heart yearns, 200 communication layers, 201 optic fibre line, 202 sink groove, 300 internal insulation layer, 301 arch, 302 mounting groove, 303 filling groove, 400 metal sheath, 401 restrictive body, 4011 joint portion, 4012 line hole, 402 shielded wire, 500 external insulation layer, 600 restrictive coating, 700 spiral conductor.
The specific implementation mode is as follows:
the invention is described in further detail below with reference to specific embodiments and drawings. Those skilled in the art will be able to implement the invention based on these teachings. Moreover, the embodiments of the present invention described in the following description are generally only some embodiments of the present invention, and not all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Unless otherwise specified, the raw materials used in the examples of the present invention are all commercially available or available to those skilled in the art; unless otherwise specified, the methods used in the examples of the present invention are all those known to those skilled in the art.
Examples
The lightning protection photoelectric cable shown in fig. 1 specifically comprises:
the core wire 100, the communication layer 200, the inner insulating layer 300, the metal sheath 400, the outer insulating layer 500 and the sheath layer 600 are sequentially arranged from inside to outside;
the core wire 100 is a multi-core copper stranded wire, the communication layer 200 is arranged outside the core wire 100, and is used for protecting the core wire 100 and simultaneously arranging and fixing an optical fiber 201 for communication, the optical fiber 201 is an optical fiber bundle formed by a single optical fiber or a plurality of optical fibers and is used for transmitting optical signals and realizing the purposes of transmitting voice, data, video and the like by an optical cable, and the optical cable is arranged along the axial direction of the optical cable;
the lower end of the cross section of the communication layer 200 is provided with a trap groove 202 along the axial direction of the cable, the inner insulating layer 300 covers the outer side of the communication layer 200 and is provided with a bulge 301 matched with the trap groove 202, the bulge 301 is in clamping fit with the trap groove 202 and corresponds to the position of the trap groove 202, and the lowest end of the radial cross section of the cable of the inner insulating layer 300 is also provided with an installation groove 302 matched with the trap groove 202;
the metal sheath 400 is arranged on the outer side of the inner insulating layer 300 and consists of a sheath part 401 and a plurality of shielding wires 402;
the sheath member 401 and the shielding wires 402 are made of metal, specifically, in this embodiment, the sheath member 401 and the shielding wires 402 are made of soft aluminum, and have electrical properties of metal and excellent flexibility, the sheath member 401 is arc-shaped on a radial cross section of the cable, and is embedded or tightly pressed on an outer surface of the inner insulating layer 300, and is provided with a notch, the shielding wires 402 are axially arranged on the outer surface of the inner insulating layer 300 corresponding to the notch of the sheath member 401, and are also arranged in an embedded or tightly pressed manner, and the shielding wires 402 are arranged at equal intervals between the notches of the sheath member 401;
the sheath part 401 is provided with a clamping part 4011 which protrudes inwards and outwards along the cable radial direction corresponding to the mounting groove 302, the clamping part 4011 and the sheath part 401 are approximately cross-shaped, and the clamping part 4011 is inwards inserted into the mounting groove 302 and is clamped and matched with the inner insulating layer 300 to realize fixation;
the center of joint portion 4011 is equipped with line hole 4012 along the cable axial, is equipped with spiral wire 700 in the line hole 4012, specifically can adopt copper clad aluminum metal line or copper wire, in this embodiment, adopts the spiral wire 700 that copper wire prepared forms. (ii) a
The outer insulating layer 500 is wrapped outside the metal sheath 400, the sheath layer 600 is wrapped outside the outer insulating layer 500, but the outer end of the clamping portion 4011 of the sheath part 401 of the metal sheath 400 penetrates through the outer insulating layer 500 and extends into the sheath layer 600 along the radial direction.
The inner insulating layer 300 and the outer insulating layer 500 are both made of insulating plastics, and specifically, the inner insulating layer 300 and the outer insulating layer 500 are made of cross-linked polyethylene materials in this embodiment.
The power transmission line is most vulnerable to lightning stroke in the field, especially in open areas, and compared with the conventional cable, the photoelectric cable for simultaneously realizing power transmission and signal transmission has a more complex and compact internal structure and higher requirements on mechanical protection, so that the conventional cable cannot be provided with complex and multi-layer metal and/or semiconductor shielding protection;
therefore, the existing photoelectric cable usually needs to be additionally provided with a lightning conductor for protection, but in some areas, the lightning conductor is not suitable for arrangement, and on one hand, a good protection effect cannot be achieved, and on the other hand, the cost of the line is greatly increased, so how to improve the effect that the photoelectric cable can effectively prevent lightning is always a difficult problem, in the technical scheme of the present invention, the semi-enclosed metal sheath 400 replaces a multi-layer shielding structure, an environmental electric field generated by the photoelectric cable is changed, a tip for accumulating static electricity can be formed through the arrangement of the clamping portion 4011 to form a guide, the trap groove 202 is also arranged to match with the tip guide, because the tip guide easily generates partial discharge, if the trap groove 202 is not arranged, the inner tip of the clamping portion 4011 is closer to the core wire 100, and meanwhile, the thickness of the inner insulating layer 300 between the clamping portion 4011 and the core wire 100 is reduced, the hidden danger of partial discharge and even electric breakdown is caused, and after the trap groove 202 is arranged, the thickness of the inner insulating layer 300 corresponding to the clamping portion 4011 is increased, and the use safety of the cable is improved;
the outer end of the clamping portion 4011 of the sheathing member 401 extends into the sheathing layer 600 on the outer side of the outer insulating layer 500, so that charges of the sheathing member 401 can be slowly released to the external environment, excessive accumulation of static electricity is avoided, and lightning stroke risk can be effectively reduced by releasing the static electricity;
in addition, a spiral conductor 700 is further arranged in the wire hole 4012, the static accumulation of the photoelectric cable is one of the main reasons for generating lightning stroke hidden dangers, the lightning stroke risk can be reduced through the static discharge at the outer end of the clamping part 4011, the spiral conductor 700 in the wire hole 4012 can further transmit and discharge static electricity under the action of an electric field after receiving static electricity, the lightning stroke risk is greatly reduced, and particularly in the environment unsuitable for arranging a lightning conductor, the spiral conductor 700 in the technical scheme can be directly used as a built-in lightning conductor, so that even after the lightning stroke happens, the metal sheath 400 and the spiral conductor 700 can rapidly guide and release lightning stroke current, and the whole cable is prevented from being damaged by the lightning stroke;
specifically, as shown in fig. 2, under the cooperation of various structures of the lightning protection photoelectric cable of the present invention, electrostatic charge accumulation can be formed on the inner and outer surfaces of the sheath member 401, and under the action of the special structure of the clamping portion 4011, charge accumulation with a density different from that of the rest portion is formed in the clamping portion 4011, that is, similar to the phenomenon of point discharge, a potential difference is formed on the sheath member 401, and a weak current caused by the potential difference flows through the spiral conductor 700, and after the spiral conductor 700 is grounded, the current can be rapidly released, so as to reduce the charge accumulation in the sheath member 401, so that the sheath member can always maintain a safe state, and the problem of increase of probability of lightning strike caused by accumulation of a large amount of static electricity is avoided, on the other hand, the sheath member 401 plays a certain role of shielding an electric field, and a certain constraint and guidance can be formed in cooperation with the arrangement of the shielding wire 402, so as to weaken the influence of the photoelectric cable on the increase of lightning strike probability when being used In the working process, the environmental field intensities at the upper side and the lower side of the sheath are as shown in fig. 3, even if a grounded wire is arranged in the sheath part 401 without a clamping part 4011, static electricity can not be effectively released through the grounded wire due to the absence of an obvious potential difference.
In conclusion, through the cooperation of multiple structures, the photoelectric cable can effectively achieve lightning protection and lightning protection, and can reduce electromagnetic pollution to a certain extent.
Further, in the above-mentioned case,
a filling groove 303 is formed in the inner insulating layer 300, the filling groove 303 is axially arranged along the cable, is arc-shaped on the radial section of the cable, and circumferentially winds from one side of the clamping portion 4011 to the other side of the clamping portion 4011;
the filling groove 303 is filled with paraffin, the paraffin adopts high-melting-point paraffin with a melting point of 57-63 ℃, and the metal sheath 400 is made of soft aluminum and can easily generate heat under the action of the core wire 100, so that the temperature stability of the core wire 100 and the communication layer 200 inside the optical cable can be effectively maintained through the paraffin for protecting the core wire 100 and the communication layer 200 inside the optical cable, and meanwhile, the paraffin also has a certain effect on the aspect of enhancing the lightning protection performance of the optical cable.
Claims (10)
1. A lightning protected photovoltaic cable, comprising:
the core wire, the communication layer, the inner insulating layer, the metal sheath, the outer insulating layer and the sheath layer are sequentially arranged from inside to outside;
the core wire is a conductive wire, the communication layer is arranged on the outer side of the core wire, and the communication layer is provided with an optical fiber wire for communication while protecting the core wire;
the lower end of the cross section of the communication layer is provided with a trap groove along the axial direction of the cable, the inner insulating layer is coated on the outer side of the communication layer and is provided with a bulge matched with the trap groove, the bulge is in clamping fit with the trap groove and corresponds to the trap groove, and the outer surface of the inner insulating layer is provided with an installation groove;
the metal sheath is arranged on the outer side of the inner insulating layer and comprises a sheath piece and a plurality of shielding wires;
the sheath piece is arc-shaped on the radial section of the cable and is provided with notches, the shielding wires are arranged on the outer surface of the inner insulating layer corresponding to the notches of the sheath piece, and the shielding wires are arranged at equal intervals among the notches of the sheath piece;
the sheath piece is provided with a clamping part which is protruded inwards and outwards along the radial direction of the cable corresponding to the installation groove, and the clamping part is inwards inserted into the installation groove and clamped and matched with the inner insulating layer to realize fixation;
the outer insulating layer wraps the outer side of the metal sheath, and the sheath layer wraps the outer side of the outer insulating layer.
2. The lightning protection photovoltaic cable of claim 1,
the conductive wire is a copper stranded wire;
the optical fiber line is an optical fiber bundle formed by a single optical fiber or a plurality of optical fibers.
3. The lightning protection photovoltaic cable of claim 1,
the sheath piece and the shielding wire are both made of metal materials.
4. The lightning protection photoelectric cable according to claim 1 or 3,
the sheath piece is arc-shaped on the radial section of the cable and is embedded or tightly pressed on the outer surface of the inner insulating layer;
the shielding wires are embedded or tightly pressed on the outer surface of the inner insulating layer along the axial direction.
5. The lightning protection photoelectric cable of claim 1,
the center of the clamping part is provided with a wire hole along the axial direction of the cable, and a spiral wire is arranged in the wire hole.
6. The lightning protection photoelectric cable of claim 6,
the spiral conductor is made of copper-clad aluminum metal wires or copper conductors.
7. The lightning protection photovoltaic cable of claim 1,
the outer end of the clamping portion of the sheathing member penetrates through the outer insulating layer and extends into the sheathing layer along the radial direction.
8. The lightning protection photovoltaic cable of claim 1,
a filling groove is arranged in the inner insulating layer, is arranged along the axial direction of the cable, is arc-shaped on the radial section of the cable, and is circumferentially wound from one side of the clamping part to the other side of the clamping part;
and filling materials are arranged in the filling groove.
9. The lightning protection photovoltaic cable of claim 8,
the filler is paraffin.
10. The lightning protection photovoltaic cable of claim 9,
the melting point of the paraffin is 57-63 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210199490.7A CN114596993A (en) | 2022-03-02 | 2022-03-02 | Lightning protection photoelectric cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210199490.7A CN114596993A (en) | 2022-03-02 | 2022-03-02 | Lightning protection photoelectric cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114596993A true CN114596993A (en) | 2022-06-07 |
Family
ID=81807473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210199490.7A Pending CN114596993A (en) | 2022-03-02 | 2022-03-02 | Lightning protection photoelectric cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114596993A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001052540A (en) * | 1999-08-11 | 2001-02-23 | Hitachi Cable Ltd | Optical fiber composite overhead ground wire |
| US6859590B1 (en) * | 1998-07-20 | 2005-02-22 | Pirelli Cavi E Sistemi S.P.A. | Hybrid electrical-optical cable for overhead installation |
| CN101116156A (en) * | 2004-12-10 | 2008-01-30 | 日本Ae帕瓦株式会社 | Arrestor and method of measuring leakage current of arrestor |
| JP2013518360A (en) * | 2010-01-26 | 2013-05-20 | 賢太郎 沖野 | Wire shield structure |
| CN205247920U (en) * | 2015-12-18 | 2016-05-18 | 深圳市国电投资有限公司 | High strength graphite cable for lightning grounding |
| CN207009150U (en) * | 2017-07-10 | 2018-02-13 | 江苏宏图高科技股份有限公司 | A kind of flexible ground shield optoelectronic composite cable |
| JP2020204752A (en) * | 2019-06-19 | 2020-12-24 | 住友電気工業株式会社 | Optical fiber cable |
| CN214897811U (en) * | 2021-06-10 | 2021-11-26 | 湖南华菱线缆股份有限公司 | Optical fiber composite cable for winding drum |
-
2022
- 2022-03-02 CN CN202210199490.7A patent/CN114596993A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6859590B1 (en) * | 1998-07-20 | 2005-02-22 | Pirelli Cavi E Sistemi S.P.A. | Hybrid electrical-optical cable for overhead installation |
| JP2001052540A (en) * | 1999-08-11 | 2001-02-23 | Hitachi Cable Ltd | Optical fiber composite overhead ground wire |
| CN101116156A (en) * | 2004-12-10 | 2008-01-30 | 日本Ae帕瓦株式会社 | Arrestor and method of measuring leakage current of arrestor |
| JP2013518360A (en) * | 2010-01-26 | 2013-05-20 | 賢太郎 沖野 | Wire shield structure |
| CN205247920U (en) * | 2015-12-18 | 2016-05-18 | 深圳市国电投资有限公司 | High strength graphite cable for lightning grounding |
| CN207009150U (en) * | 2017-07-10 | 2018-02-13 | 江苏宏图高科技股份有限公司 | A kind of flexible ground shield optoelectronic composite cable |
| JP2020204752A (en) * | 2019-06-19 | 2020-12-24 | 住友電気工業株式会社 | Optical fiber cable |
| CN214897811U (en) * | 2021-06-10 | 2021-11-26 | 湖南华菱线缆股份有限公司 | Optical fiber composite cable for winding drum |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7272281B2 (en) | Powered fiber cable | |
| US4490009A (en) | Optical fiber submarine cable | |
| AU2014405270A1 (en) | Submarine electrical cable and submarine cable operation method | |
| EP3384503B1 (en) | Electrical cables | |
| US5646370A (en) | Permanent attachment of grounding wire | |
| CN112435782A (en) | Polyvinyl chloride insulation nylon sheath cable | |
| CN209880229U (en) | Waterproof directly-buried photovoltaic cable | |
| CN209766059U (en) | Umbilical cable with armor layer for hose composite strong-current underwater production system | |
| CN114596993A (en) | Lightning protection photoelectric cable | |
| CN209912547U (en) | Armored high-strength composite umbilical cable for underwater production system of strong electricity | |
| CN217280140U (en) | Aluminum cable connection structure | |
| CN211208851U (en) | Flat structure wire harness assembly for manufacturing and guiding bomb | |
| EP3564970A1 (en) | Single-core submarine cable | |
| CN211858252U (en) | Compact composite cable | |
| CN212990766U (en) | Submarine power optical communication composite cable | |
| CN212208989U (en) | Photovoltaic connecting wire capable of resisting bending and breaking | |
| CN210349422U (en) | High-pressure submarine cable long-distance landing structure | |
| CN113949028A (en) | Optical fiber composite overhead insulated cable laying and connecting assembly for metropolitan area power distribution network | |
| CN112909676A (en) | Waterproof electronic wire bundle | |
| CN208478015U (en) | Block water high-temperature-resistant power cable | |
| CN217880922U (en) | Underwater optical fiber composite power cable | |
| CN219591139U (en) | Anti-interference cable | |
| CN217157745U (en) | Computer control cable with peripheral shielding protection structure | |
| CN219610048U (en) | 125 ℃ irradiation-free TPE cable | |
| CN213459152U (en) | Tensile anti-aging data communication cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20241008 |