CN113949028B - Optical fiber composite overhead insulated cable laying and connecting assembly for metropolitan area distribution network - Google Patents
Optical fiber composite overhead insulated cable laying and connecting assembly for metropolitan area distribution network Download PDFInfo
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- CN113949028B CN113949028B CN202111149156.2A CN202111149156A CN113949028B CN 113949028 B CN113949028 B CN 113949028B CN 202111149156 A CN202111149156 A CN 202111149156A CN 113949028 B CN113949028 B CN 113949028B
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- optical fiber
- fitting
- fiber composite
- composite overhead
- cross arm
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 118
- 239000002131 composite material Substances 0.000 title claims abstract description 79
- 238000009826 distribution Methods 0.000 title claims abstract description 48
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 56
- 239000012212 insulator Substances 0.000 claims abstract description 48
- 230000003287 optical effect Effects 0.000 claims abstract description 37
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 35
- 229910052782 aluminium Inorganic materials 0.000 claims description 35
- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- 239000004065 semiconductor Substances 0.000 claims description 18
- 229910052755 nonmetal Inorganic materials 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 10
- 238000009413 insulation Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000010292 electrical insulation Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012211 strain insulator Substances 0.000 description 2
- RRVPPYNAZJRZFR-VYOBOKEXSA-N 1-oleoyl-2-palmitoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)O[C@@H](COP([O-])(=O)OCC[N+](C)(C)C)COC(=O)CCCCCCC\C=C/CCCCCCCC RRVPPYNAZJRZFR-VYOBOKEXSA-N 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/20—Spatial arrangements or dispositions of lines or cables on poles, posts or towers
- H02G7/205—Installation of electric cables, extending along a pole
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/02—Devices for adjusting or maintaining mechanical tension, e.g. take-up device
Abstract
The invention discloses an optical fiber composite overhead insulated cable laying connection assembly for a metropolitan area distribution network, which comprises a supporting rod, an optical fiber composite overhead insulated cable, a first porcelain cross arm, a first preformed tension-resistant fitting, a first insulator, a first connecting fitting, a second preformed tension-resistant fitting, a second insulator and a second connecting fitting, wherein the first porcelain cross arm is arranged on the supporting rod, the first preformed tension-resistant fitting, the first insulator and the first connecting fitting are sequentially connected on the first porcelain cross arm in series from outside to inside, the second preformed tension-resistant fitting, the second insulator and the second connecting fitting are sequentially connected on the first porcelain cross arm in series from outside to inside, and the optical fiber composite overhead insulated cable is arranged on a pole tower in a holding mode through the first preformed tension-resistant fitting and the second preformed tension-resistant fitting. The invention has stable and reliable integral structure, and has the characteristics of electric transmission performance and optical communication capability, and excellent continuous convenience and electric insulation performance of the optical fiber.
Description
Technical Field
The invention relates to the technical field of special power cables, in particular to an optical fiber composite overhead insulated cable laying and connecting assembly for a metropolitan area distribution network.
Background
Because the urban distribution network overhead line has the characteristics of narrow passage space, easiness in tree coverage, dense buildings and the like, overhead cables with insulating protective sleeves are generally adopted for ensuring safety. However, the conventional optical fiber composite phase line (OPPC) has no insulating sheath, high-voltage insulation and sealing protection at the junction, high cost of the connector box, and numerous line branches of the power distribution network, which makes engineering cost high, and is not applicable to the scene in both technical application and engineering cost, and causes various operation and maintenance problems and inconvenient transformation.
The optical fiber composite overhead insulated cable for the urban distribution network and a laying and connecting assembly thereof are designed and developed for improving the reliability, stability and operation and maintenance capability support of the communication optical cable of the distribution network to the power system by combining the characteristics of overhead insulated lines of the distribution network and the current construction application conditions, one or more novel distribution network power optical cable engineering applications for solving the requirements of different operation environments of the distribution network are constructed, an informationized, automatic and interactive future distribution network of the distribution network is constructed, and the power supply reliability and the voltage quality of the distribution network are improved.
Disclosure of Invention
The invention mainly aims at providing an optical fiber composite overhead insulated cable laying and connecting assembly for a metropolitan area distribution network aiming at the application requirements of the existing distribution network overhead insulated line optical communication.
In order to achieve the above purpose, the invention provides an optical fiber composite overhead insulated cable laying connection assembly for a metropolitan area distribution network, which comprises a supporting rod, an optical fiber composite overhead insulated cable, a first porcelain cross arm, a first preformed tension-resistant fitting, a first insulator, a first connecting fitting, a second preformed tension-resistant fitting, a second insulator and a second connecting fitting, wherein the first porcelain cross arm is arranged on the supporting rod, the first preformed tension-resistant fitting, the first insulator and the first connecting fitting are sequentially connected on the first porcelain cross arm in series from outside to inside, the second preformed tension-resistant fitting, the second insulator and the second connecting fitting are sequentially connected on the first porcelain cross arm in series from outside to inside, and the first preformed tension-resistant fitting, the first insulator, the first connecting fitting and the second preformed tension-resistant fitting, the second insulator and the second connecting fitting are respectively arranged on two sides of the first porcelain cross arm, and the optical fiber composite insulated cable is arranged on the winding tower from outside to inside through the first preformed tension-resistant fitting and the second preformed tension-resistant fitting;
the optical fiber composite overhead insulated cable comprises an aluminum-clad steel cable core bearing piece, an electrical aluminum wire layer and a nonmetallic loose sleeve optical fiber unit which are sequentially arranged from inside to outside, wherein the aluminum-clad steel cable core bearing piece is positioned at the center of the optical fiber composite overhead insulated cable, the electrical aluminum wire layer surrounds the aluminum-clad steel cable core bearing piece and is precisely stranded, and the nonmetallic loose sleeve optical fiber unit is made of high-temperature-resistant plastic.
The invention further adopts the technical scheme that the optical fiber composite overhead insulated cable further comprises a semiconductor belt, a semiconductor shielding layer and an insulating sheath, wherein the aluminum-clad steel cable core bearing piece, the electrical aluminum wire layer, the nonmetallic loose-sleeve optical fiber unit, the semiconductor belt, the semiconductor shielding layer and the insulating sheath are sequentially arranged from inside to outside.
The optical fiber composite overhead insulated cable laying connection assembly for the urban distribution network further comprises an optical cable junction box, a parallel groove clamp, a first rubber branch sleeve and a second rubber branch sleeve, wherein the first rubber branch sleeve and the second rubber branch sleeve both comprise a wire rubber sheath and an optical unit rubber sheath, the optical cable junction box is arranged on the supporting rod and is positioned below the first porcelain cross arm, the first rubber branch sleeve and the second rubber branch sleeve are respectively arranged on two sides of the first porcelain cross arm, and the parallel groove clamp is arranged on the supporting rod and is positioned below the optical cable junction box;
the optical fiber composite overhead insulated cable on one side of the first porcelain cross arm is stripped at the first rubber branch sleeve, wherein an aluminum coated steel cable core bearing part and an electrical aluminum wire layer of the optical fiber composite overhead insulated cable on one side of the first porcelain cross arm penetrate into a wire rubber sheath of the first rubber branch sleeve, a nonmetal loose tube optical fiber unit penetrates into an optical unit rubber sheath of the first rubber branch sleeve, a nonmetal loose tube optical fiber unit penetrating out of the optical unit rubber sheath of the first rubber branch sleeve penetrates into the optical cable junction box for welding, optical fiber distribution and sealing protection, and a parallel groove wire clamp is connected with the aluminum coated steel cable core bearing part and the electrical aluminum wire layer of the optical fiber composite overhead insulated cable on one side of the first porcelain cross arm;
the optical fiber composite overhead insulated cable at the other side of the first porcelain cross arm is stripped at the second rubber branch sleeve, wherein an aluminum coated steel cable core bearing part and an electrical aluminum wire layer of the optical fiber composite overhead insulated cable at the other side of the first porcelain cross arm penetrate into a wire rubber sheath of the second rubber branch sleeve, a nonmetal loose sleeve optical fiber unit penetrates into an optical unit rubber sheath of the second rubber branch sleeve, a nonmetal loose sleeve optical fiber unit penetrating out of the optical unit rubber sheath of the second rubber branch sleeve penetrates into the optical cable junction box for welding, optical fiber distribution and sealing protection, and a parallel groove wire clamp is connected with the aluminum coated steel cable core bearing part and the electrical aluminum wire layer of the optical fiber composite overhead insulated cable at the other side of the first porcelain cross arm.
According to the technical scheme, the optical fiber composite overhead insulated cable laying and connecting assembly for the metropolitan area distribution network further comprises a first residual cable frame and a second residual cable frame, wherein the optical fiber composite overhead insulated cable on one side of the first porcelain cross arm is peeled off at the first rubber branch sleeve after being coiled on the first residual cable frame, and the optical fiber composite overhead insulated cable on the other side of the second porcelain cross arm is peeled off at the second rubber branch sleeve after being coiled on the second residual cable frame.
According to the technical scheme, the optical fiber composite overhead insulated cable laying connection assembly for the metropolitan area distribution network further comprises an anchor ear, a second porcelain cross arm, a drainage wire, a first wedge-shaped tension-resistant fitting, a third insulator, a third connecting fitting, a second wedge-shaped tension-resistant fitting, a fourth insulator and a fourth connecting fitting, wherein the first wedge-shaped tension-resistant fitting, the third insulator and the third connecting fitting are used for fastening an insulated cable on one side of the anchor ear, the second wedge-shaped tension-resistant fitting, the third insulator and the third connecting fitting are used for fastening an insulated cable on the other side of the anchor ear, the second wedge-shaped tension-resistant fitting, the fourth insulator and the fourth connecting fitting are arranged on two sides of the anchor ear, the first wedge-shaped tension-resistant fitting, the third insulator and the third connecting fitting are arranged on the support rod, the anchor ear is arranged on the upper end of the support rod, the first wedge-shaped tension-resistant fitting, the third insulator and the third connecting fitting are connected in series from outside to inside, the second wedge-shaped tension-resistant fitting and the fourth insulator is connected in series to the anchor ear, the second wedge-shaped tension-resistant fitting and the fourth insulator is connected to the drainage wire on one side of the anchor ear, and the cable is connected to the other side of the cable through the second wedge-shaped tension-resistant fitting and the drainage wire.
The optical fiber composite overhead insulated cable laying and connecting assembly for the urban distribution network has the beneficial effects that: the invention has the advantages of stable and reliable integral structure, excellent optical fiber continuous convenience and electrical insulation performance besides the performance characteristics of electrical transmission performance and optical communication capability, can meet the engineering application requirements of multiple branches and simple connection of a power distribution network, and is very suitable for overhead laying application of municipal roads in cities on power distribution lines.
Drawings
In order to more clearly illustrate the examples of the invention or the technical solutions of the prior art, the drawings used in the examples or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained from the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a preferred embodiment of an optical fiber composite overhead insulated cable laying splice assembly for a metropolitan area distribution network in accordance with the present invention;
FIG. 2 is another schematic diagram of a preferred embodiment of an optical fiber composite overhead insulated cable laying splice assembly for a metropolitan area distribution network in accordance with the present invention;
FIG. 3 is a schematic structural view of a fiber optic composite overhead insulated cable;
fig. 4 is a schematic structural view of the first rubber branch sleeve and the second rubber branch sleeve.
Reference numerals illustrate:
a support bar 1; a first porcelain cross arm 2; a first preformed strain fitting 3; a first insulator 4; a first connection fitting 5; the second preformed strain hardware fitting 6; a second insulator 7; a second connection fitting 8; an optical fiber composite overhead insulated cable 9; an aluminum-clad steel cable core bearing part 10; an electrical aluminum wire layer 11; a nonmetallic loose-tube optical fiber unit 12; a semiconductor tape 13; a semiconductor shielding layer 14; an insulating sheath 15; a cable junction box 16; a parallel groove clamp 17; a first rubber branch sleeve 18; a second rubber branch sleeve 19; a wire rubber sheath 20; a light unit rubber sheath 21; a first excess cable rack 22; a second surplus cable frame 23; a hoop 24; a second porcelain cross arm 25; a drainage line 26; a first wedge-shaped strain body 27; a third insulator 28; a third connection fitting 29; a second wedge-shaped strain body 30; a fourth insulator 31; a fourth link fitting 32; the insulated cable 33 is aerial.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The optical fiber composite overhead insulated cable for the urban distribution network and the laying and connecting assembly thereof have the advantages of stable overall structure, excellent electrical insulation performance, continuous and convenient optical fiber, low manufacturing cost and convenient branch extraction, and are very suitable for laying and applying the distribution line on urban municipal roads in an overhead manner.
Referring to fig. 1 and 2, the present invention provides an optical fiber composite overhead insulated cable laying and connecting assembly for a metropolitan area distribution network, and a preferred embodiment of the optical fiber composite overhead insulated cable laying and connecting assembly for a metropolitan area distribution network includes a support rod 1, a first porcelain cross arm 2, a first pre-twisted strain insulator 3, a first insulator 4, a first connection hardware 5, a second pre-twisted strain insulator 6, a second insulator 7 and a second connection hardware 8.
The optical fiber composite overhead insulated cable 9 on one side of the first porcelain cross arm 2 is wound and held by the first pre-twisted tension fitting 3, and the optical fiber composite overhead insulated cable 9 on the other side of the first porcelain cross arm 2 is wound and held by the second pre-twisted tension fitting 6.
The first porcelain cross arm 2 is arranged on the supporting rod 1, the first preformed tension fitting 3, the first insulator 4 and the first connecting fitting 5 are sequentially connected on the first porcelain cross arm 2 in series from outside to inside to realize electric insulation and mechanical fixation,
the second preformed tension fitting 6, the second insulator 7 and the second connecting fitting 8 are sequentially connected in series on the first porcelain cross arm 2 from outside to inside, so that electric insulation and mechanical fixation are realized.
The first preformed tension-resistant hardware fitting 3, the first insulator 4, the first connecting hardware fitting 5, the second preformed tension-resistant hardware fitting 6, the second insulator 7 and the second connecting hardware fitting 8 are respectively arranged on two sides of the first porcelain cross arm 2.
As shown in fig. 3, in this embodiment, the optical fiber composite overhead insulated cable 9 includes an aluminum-clad steel cable core bearing member 10, an electrical aluminum wire layer 11 and a nonmetallic loose-tube optical fiber unit 12 that are sequentially disposed from inside to outside, the aluminum-clad steel cable core bearing member 10 is located at the center of the optical fiber composite overhead insulated cable 9, and the electrical aluminum wire layer 11 is precisely stranded around the aluminum-clad steel cable core bearing member 10.
The optical fiber composite overhead insulated cable 9 further comprises a semiconductor belt 13, a semiconductor shielding layer 14 and an insulating sheath 15, wherein the aluminum-clad steel cable core bearing piece 10, the electrical aluminum wire layer 11, the nonmetallic loose tube optical fiber unit 12, the semiconductor belt 13, the semiconductor shielding layer 14 and the insulating sheath 15 are sequentially arranged from inside to outside.
The nonmetallic loose tube optical fiber unit 12 is made of high-temperature resistant plastic.
The effect of the nonmetal loose tube optical fiber unit 12 made of high-temperature resistant plastic and positioned on the outer layer of the electrical aluminum wire layer 11 in the embodiment is that the nonmetal loose tube optical fiber unit 12 is convenient to be undamaged and easily stripped and pulled out when the optical fiber composite overhead insulated cable 9 is connected, thus realizing photoelectric separation and being used for optical fiber connection and optical cable line branching.
The overall structure of the optical fiber composite overhead insulated cable 9 in the embodiment is electrically insulated to the outside, and meanwhile, the nonmetallic loose tube optical fiber unit 12 is beneficial to effectively protecting in a production link and facilitating stripping and leading out in a construction connection link.
Further, in this embodiment, the optical fiber composite overhead insulated cable laying connection assembly for a metropolitan area distribution network further includes an optical cable junction box 16, a parallel groove clamp 17, a first rubber branch sleeve 18 and a second rubber branch sleeve 19, where, as shown in fig. 4, the first rubber branch sleeve 18 and the second rubber branch sleeve 19 each include a wire rubber sheath 20 and an optical unit rubber sheath 21.
The first rubber sleeve and the second rubber sleeve are mainly used for insulating protection of the stripping part of the optical fiber composite overhead insulated cable 9.
The optical cable junction box 16 is mounted on the supporting rod 1 and located below the first porcelain cross arm 2, and the first rubber branch sleeve 18 and the second rubber branch sleeve 19 are respectively arranged on two sides of the first porcelain cross arm 2.
The semiconductor strip 13, the semiconductor shielding layer 14 and the insulating sheath 15 are stripped at the first rubber branch sleeve 18 of the optical fiber composite overhead insulating cable 9 at one side of the first porcelain cross arm 2, wherein the aluminum coated steel cable core bearing part 10 and the electrical aluminum wire layer 11 of the optical fiber composite overhead insulating cable 9 at one side of the first porcelain cross arm 2 penetrate into the lead rubber sheath 20 of the first rubber branch sleeve 18, the nonmetallic loose-sleeve optical fiber unit 12 penetrates into the optical unit rubber sheath 21 of the first rubber branch sleeve 18, and then the parallel groove clamp 17 is used for connecting the aluminum coated steel cable core bearing part 10 and the electrical aluminum wire layer 11, so that the optical fiber composite overhead insulating cable 9 is in current communication.
The nonmetallic loose tube optical fiber unit 12 penetrating out of the optical unit rubber sheath 21 of the first rubber branch sleeve 18 penetrates into the optical cable junction box 16 for fusion, optical fiber distribution and sealing protection, and optical fiber communication connection and branching protection of the optical fiber composite overhead insulated cable 9 are achieved.
The semiconductor strip 13, the semiconductor shielding layer 14 and the insulating sheath 15 are stripped at the position of the second rubber branch sleeve 19 by the optical fiber composite overhead insulating cable 9 at the other side of the first porcelain cross arm 2, wherein the aluminum coated steel cable core bearing part 10 and the electrical aluminum wire layer 11 of the optical fiber composite overhead insulating cable 9 at the other side of the second porcelain cross arm 25 penetrate into the lead rubber sheath 20 of the second rubber branch sleeve 19, the nonmetal loose tube optical fiber unit 12 penetrates into the optical unit rubber sheath 21 of the second rubber branch sleeve 19, and then the parallel groove clamp 17 is used for connecting the aluminum coated steel cable core bearing part 10 and the electrical aluminum wire layer 11, so that the current communication of the optical fiber composite overhead insulating cable 9 is realized.
The nonmetallic loose tube optical fiber unit 12 penetrating out of the optical unit rubber sheath 21 of the second rubber branch sleeve 19 penetrates into the optical cable junction box 16 for fusion, optical fiber distribution and sealing protection, and optical fiber communication connection and branching protection of the optical fiber composite overhead insulated cable 9 are achieved.
Still further, in this embodiment, the optical fiber composite overhead insulated cable laying connection assembly for a metropolitan area distribution network further includes a first residual cable frame 22 and a second residual cable frame 23, the optical fiber composite overhead insulated cable 9 on one side of the first porcelain cross arm 2 is peeled at the first rubber branching sleeve 18 after being coiled on the first residual cable frame 22, and the optical fiber composite overhead insulated cable 9 on the other side of the second porcelain cross arm 25 is peeled at the second rubber branching sleeve 19 after being coiled on the second residual cable frame 23.
The first residual cable rack 22 and the second residual cable rack 23 are used for accommodating 2-3 circles of optical fiber composite overhead insulated cables 9 and are used for later line relocation and operation and maintenance use and storage.
In this embodiment, when the line length is too long or the inductance requirement is high, the first residual cable frame 22 and/or the second residual cable frame 23 may be omitted at two sides of the splicing assembly of the optical fiber composite overhead insulated cable 9 for the metropolitan area distribution network.
Still further, in this embodiment, the optical fiber composite overhead insulated cable laying connection assembly for a metropolitan area distribution network further includes a hoop 24, a second porcelain cross arm 25, a drainage wire 26, a first wedge-shaped tension-resistant fitting 27 for fastening an overhead insulated cable 33 on one side of the hoop 24, a third insulator 28, a third connection fitting 29, a second wedge-shaped tension-resistant fitting 30 for fastening an overhead insulated cable 33 on the other side of the hoop 24, a fourth insulator 31, and a fourth connection fitting 32.
The aerial insulated cable 33 and the optical fiber composite aerial insulated cable 9 in the present embodiment have different structures, wherein the aerial insulated cable 33 is a cable with no optical fiber that is erected in advance, and the optical fiber composite aerial insulated cable 9 is a cable with optical fiber.
The second porcelain cross arm 25 is installed at the top of the supporting rod 1, the anchor ear 24 is installed at the upper end of the supporting rod 1, the parallel groove clamp 17 is installed on the supporting rod 1 and located below the optical cable junction box 16, and the first wedge-shaped tension fitting 27, the third insulator 28 and the third connecting fitting 29 are connected in series on the anchor ear 24 from outside to inside, so that electric insulation and mechanical fixation are realized.
The second wedge-shaped tension fitting 30, the fourth insulator 31 and the fourth connecting fitting 32 are connected in series on the anchor ear 24 from outside to inside, so as to realize electrical insulation and mechanical fixation.
The first wedge-shaped tension-resistant fitting 27, the third insulator 28, the third connecting fitting 29 and the second wedge-shaped tension-resistant fitting 30, the fourth insulator 31 and the fourth connecting fitting 32 are respectively located on two sides of the anchor ear 24, an overhead insulated cable 33 on one side of the anchor ear 24 is connected with an overhead insulated cable 33 on the other side of the anchor ear 24 through the drainage wire 26, the parallel groove wire clamp 17 is connected with the drainage wire 26 and is fixed on the second porcelain cross arm 25, and current communication of the 9 overhead insulated cable 33 is realized.
The optical fiber composite overhead insulated cable laying and connecting assembly for the urban distribution network has the beneficial effects that: the invention has the advantages of stable and reliable integral structure, excellent optical fiber continuous convenience and electrical insulation performance besides the performance characteristics of electrical transmission performance and optical communication capability, can meet the engineering application requirements of multiple branches and simple connection of a power distribution network, and is very suitable for overhead laying application of municipal roads in cities on power distribution lines.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the specification and drawings of the present invention or direct/indirect application in other related technical fields are included in the scope of the present invention.
Claims (4)
1. The optical fiber composite overhead insulated cable laying connection assembly for the metropolitan area distribution network is characterized by comprising a supporting rod, an optical fiber composite overhead insulated cable, a first porcelain cross arm, a first preformed tension-resistant fitting, a first insulator, a first connecting fitting, a second preformed tension-resistant fitting, a second insulator and a second connecting fitting, wherein the first porcelain cross arm is arranged on the supporting rod, the first preformed tension-resistant fitting, the first insulator and the first connecting fitting are sequentially connected onto the first porcelain cross arm in series from outside to inside, the second preformed tension-resistant fitting, the second insulator and the second connecting fitting are sequentially connected onto the first porcelain cross arm in series from outside to inside, and the first preformed tension-resistant fitting, the first insulator, the first connecting fitting and the second preformed tension-resistant fitting, the second insulator and the second connecting fitting are respectively arranged on two sides of the first cross arm, and the composite optical fiber is sequentially connected onto the winding tower from outside to inside through the first preformed tension-resistant fitting and the second preformed tension-resistant fitting;
the optical fiber composite overhead insulated cable comprises an aluminum-clad steel cable core bearing piece, an electrical aluminum wire layer and a nonmetallic loose tube optical fiber unit which are sequentially arranged from inside to outside, wherein the aluminum-clad steel cable core bearing piece is positioned at the center of the optical fiber composite overhead insulated cable, the electrical aluminum wire layer is precisely stranded around the aluminum-clad steel cable core bearing piece, and the nonmetallic loose tube optical fiber unit is made of high-temperature resistant plastic;
the optical fiber composite overhead insulated cable laying connection assembly for the metropolitan area distribution network further comprises an optical cable junction box, a parallel groove clamp, a first rubber branch sleeve and a second rubber branch sleeve, wherein the first rubber branch sleeve and the second rubber branch sleeve both comprise a wire rubber sheath and an optical unit rubber sheath, the optical cable junction box is arranged on the supporting rod and positioned below the first porcelain cross arm, the first rubber branch sleeve and the second rubber branch sleeve are respectively arranged on two sides of the first porcelain cross arm, and the parallel groove clamp is arranged on the supporting rod and positioned below the optical cable junction box;
the optical fiber composite overhead insulated cable on one side of the first porcelain cross arm is stripped at the first rubber branch sleeve, wherein an aluminum coated steel cable core bearing part and an electrical aluminum wire layer of the optical fiber composite overhead insulated cable on one side of the first porcelain cross arm penetrate into a wire rubber sheath of the first rubber branch sleeve, a nonmetal loose tube optical fiber unit penetrates into an optical unit rubber sheath of the first rubber branch sleeve, a nonmetal loose tube optical fiber unit penetrating out of the optical unit rubber sheath of the first rubber branch sleeve penetrates into the optical cable junction box for welding, optical fiber distribution and sealing protection, and a parallel groove wire clamp is connected with the aluminum coated steel cable core bearing part and the electrical aluminum wire layer of the optical fiber composite overhead insulated cable on one side of the first porcelain cross arm;
the optical fiber composite overhead insulated cable at the other side of the first porcelain cross arm is stripped at the second rubber branch sleeve, wherein an aluminum coated steel cable core bearing part and an electrical aluminum wire layer of the optical fiber composite overhead insulated cable at the other side of the first porcelain cross arm penetrate into a wire rubber sheath of the second rubber branch sleeve, a nonmetal loose sleeve optical fiber unit penetrates into an optical unit rubber sheath of the second rubber branch sleeve, a nonmetal loose sleeve optical fiber unit penetrating out of the optical unit rubber sheath of the second rubber branch sleeve penetrates into the optical cable junction box for welding, optical fiber distribution and sealing protection, and a parallel groove wire clamp is connected with the aluminum coated steel cable core bearing part and the electrical aluminum wire layer of the optical fiber composite overhead insulated cable at the other side of the first porcelain cross arm.
2. The optical fiber composite overhead insulated cable laying connection assembly for the metropolitan area distribution network according to claim 1, wherein the optical fiber composite overhead insulated cable further comprises a semiconductor tape, a semiconductor shielding layer and an insulating sheath, and the aluminum-clad steel cable core bearing piece, the electrical aluminum wire layer, the nonmetallic loose-tube optical fiber unit, the semiconductor tape, the semiconductor shielding layer and the insulating sheath are sequentially arranged from inside to outside.
3. The optical fiber composite overhead insulated cable laying and connecting assembly for the metropolitan area distribution network according to claim 1, wherein the optical fiber composite overhead insulated cable laying and connecting assembly for the metropolitan area distribution network further comprises a first residual cable frame and a second residual cable frame, the optical fiber composite overhead insulated cable on one side of the first porcelain cross arm is peeled off at the first rubber branch sleeve after being coiled on the first residual cable frame, and the optical fiber composite overhead insulated cable on the other side of the first porcelain cross arm is peeled off at the second rubber branch sleeve after being coiled on the second residual cable frame.
4. The optical fiber composite overhead insulated cable laying connection assembly for the metropolitan area distribution network according to any one of claims 1 to 3, further comprising a hoop, a second porcelain cross arm, a drainage wire, a first wedge-shaped tension-resistant fitting for fastening an insulated cable on one side of the hoop, a third insulator, a third connecting fitting, a second wedge-shaped tension-resistant fitting for fastening an insulated cable on the other side of the hoop, a fourth insulator and a fourth connecting fitting, wherein the second porcelain cross arm is mounted on the top of the supporting rod, the hoop is mounted on the upper end of the supporting rod, the first wedge-shaped tension-resistant fitting, the third insulator and the third connecting fitting are connected in series on the hoop from outside to inside, the second wedge-shaped tension-resistant fitting, the fourth insulator and the fourth connecting fitting are connected in series on the hoop from outside to inside, the first wedge-shaped tension-resistant fitting, the third insulator, the third connecting fitting and the second wedge-resistant fitting and the fourth insulator are connected in series on both sides of the cable, the fourth connecting fitting and the drainage wire are connected on the other side of the cable through the second wedge-shaped tension-resistant fitting and the fourth insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111149156.2A CN113949028B (en) | 2021-09-29 | 2021-09-29 | Optical fiber composite overhead insulated cable laying and connecting assembly for metropolitan area distribution network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111149156.2A CN113949028B (en) | 2021-09-29 | 2021-09-29 | Optical fiber composite overhead insulated cable laying and connecting assembly for metropolitan area distribution network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113949028A CN113949028A (en) | 2022-01-18 |
| CN113949028B true CN113949028B (en) | 2024-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111149156.2A Active CN113949028B (en) | 2021-09-29 | 2021-09-29 | Optical fiber composite overhead insulated cable laying and connecting assembly for metropolitan area distribution network |
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| CN115308867B (en) * | 2022-10-09 | 2023-01-06 | 长飞光纤光缆股份有限公司 | Leading-down piece of OPGW and method for leading-down insulated optical unit by adopting leading-down piece |
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| CN113949028A (en) | 2022-01-18 |
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