CN116844768B - High-strength light overhead insulated cable - Google Patents
High-strength light overhead insulated cable Download PDFInfo
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- CN116844768B CN116844768B CN202310534264.4A CN202310534264A CN116844768B CN 116844768 B CN116844768 B CN 116844768B CN 202310534264 A CN202310534264 A CN 202310534264A CN 116844768 B CN116844768 B CN 116844768B
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- cable
- insulated cable
- overhead insulated
- air bags
- connector
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 13
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 13
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003063 flame retardant Substances 0.000 claims abstract description 6
- 229920006231 aramid fiber Polymers 0.000 claims description 19
- 230000017525 heat dissipation Effects 0.000 claims description 19
- 239000003292 glue Substances 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000191 radiation effect Effects 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/185—Sheaths comprising internal cavities or channels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/008—Power cables for overhead application
-
- 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
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Cable Accessories (AREA)
Abstract
The invention relates to the technical field of overhead cables and discloses a high-strength light overhead insulated cable which comprises an inner core, wherein an insulating layer is wrapped on the outer side of the inner core, the inner core is uniformly distributed around the central line of the cable in a plurality of groups and is propped against each other in sequence, the areas among the inner cores are filled with insulating ropes, the outer sides of the inner cores are wrapped around an outer ring by using a bundling film, and a concave part is formed at the outer position among the adjacent inner cores. The high-strength light overhead insulated cable provided by the invention is designed with the columnar air bags, has multiple functions, firstly can play a role in buffering, reduces the damage of external acting force to the inner core, secondly replaces the original armor protection layer, reduces the overall weight of the cable, becomes a light cable, and when sparks or flames are generated around a third cable, the air bags are burned inwards to release carbon dioxide gas, so that the flame retardant effect is achieved, the fireproof performance of the cable is improved, and the cable is suitable for different working conditions and brings better use prospects.
Description
Technical Field
The invention relates to the technical field of overhead cables, in particular to a high-strength light overhead insulated cable.
Background
The traditional high-voltage power transmission mode mostly uses a high-voltage overhead line or a high-voltage cable line as a transmission channel, and the overhead cable is a new high-voltage power transmission mode between the overhead wire and the underground cable and is provided with an insulating layer and an overhead wire with a protective sheath; the overhead cable can greatly reduce various short-circuit faults (particularly flashover faults common to overhead bare wires), compared with the overhead bare wires, the overhead cable has the main characteristics of 4-6 times lower fault rate, high power supply reliability, good power supply safety, convenient erection and maintenance, reasonable economy and the like.
However, the existing overhead cable is complex and severe in use environment and needs armor protection, so that the weight of the existing overhead cable is high, on one hand, the production cost and the transportation cost are increased, and on the other hand, the weight of the existing overhead cable greatly increases the difficulty of overhead; on the basis of armor, the heat dissipation performance of the overhead cable is affected by wrapping a plurality of material layers to meet the insulation and waterproof performances, and the service life of the cable is reduced in a hot environment; further, when sparks or flames are generated around the aerial cable due to thunder and lightning weather or artificial unexpected factors, the aim of flame retardance cannot be effectively achieved only by means of the fireproof outer skin, and the fireproof performance needs to be enhanced.
In summary, considering that the performance of the existing aerial cable cannot meet the working and use requirements, we propose a high-strength light aerial insulated cable.
Disclosure of Invention
The invention mainly aims to provide a high-strength light overhead insulated cable which can effectively solve the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The utility model provides a light-duty aerial insulated cable of high strength, includes the inner core, the outside parcel of inner core has the insulating layer, the inner core is a plurality of groups evenly around the central line distribution of cable altogether to lean against in proper order, a plurality of groups the region between the inner core is filled with insulating rope.
As a preferred embodiment of the high-strength light overhead insulated cable of the present invention, wherein: the number of cores is preferably 3-8 groups.
As a preferred embodiment of the high-strength light overhead insulated cable of the present invention, wherein: and the outer sides of the inner cores are wrapped around the outer ring by using the bundling film.
As a preferred embodiment of the high-strength light overhead insulated cable of the present invention, wherein: the concave parts are formed between the adjacent inner cores at outer positions, columnar air bags are extruded into the concave parts, the number of the columnar air bags is the same as that of the inner cores, preferably 3-8 groups, carbon dioxide inner cavities are formed in the columnar air bags, and a plurality of groups of columnar air bags are in contact with the aramid fiber reinforcing layer.
As a preferred embodiment of the high-strength light overhead insulated cable of the present invention, wherein: the outside parcel of aramid fiber enhancement layer has the oversheath, the heat dissipation cavity has evenly been seted up to the position of being in contact with the oversheath on the aramid fiber enhancement layer, the air cock has been seted up at the middle part of heat dissipation cavity, the bilateral symmetry of air cock is provided with protruding lip.
As a preferred embodiment of the high-strength light overhead insulated cable of the present invention, wherein: the two ends of the columnar air bag are symmetrically provided with chamfer parts, the outer of the chamfer parts is clamped and provided with a tight sleeve, and the end face of the tight sleeve is welded with a threaded connector.
As a preferred embodiment of the high-strength light overhead insulated cable of the present invention, wherein: the columnar airbags are horizontally and equidistantly distributed, and the adjacent columnar airbags are connected by using a double connector.
As a preferred embodiment of the high-strength light overhead insulated cable of the present invention, wherein: the double-connector comprises an annular frame, double-thread barrels, first connector threads, second connector threads, fixing columns and rotating bearings, wherein the double-thread barrels with the same number of columnar air bags are uniformly distributed on the periphery of the annular frame, the first connector threads and the second connector threads are sequentially arranged in the double-thread barrels and are connected with threaded connectors, the fixing columns are outwards welded on the outer side face of the annular frame, the optimal number of the fixing columns is 3-4 groups, and the rotating bearings are sleeved on the fixing columns.
As a preferred embodiment of the high-strength light overhead insulated cable of the present invention, wherein: the heat dissipation cavity is filled with a connecting sheet, the widths of the connecting sheet and the connecting sheet are the same, the connecting sheet is matched with each other, a row of glue injection holes are formed in the upper end portion of the connecting sheet, the number of the glue injection holes is preferably 2-4 groups, an elastic clamping piece is welded on the inner side face of the connecting sheet, a fixed thread cylinder is welded in the middle of the outer surface of the elastic clamping piece, and the fixed thread cylinder is used for inserting and connecting a rotating bearing.
As a preferred embodiment of the high-strength light overhead insulated cable of the present invention, wherein: the carbon dioxide inner cavity is filled with carbon dioxide flame-retardant gas.
As a preferred embodiment of the high-strength light overhead insulated cable of the present invention, wherein: the outer surface of the rotating bearing is provided with external threads.
As a preferred embodiment of the high-strength light overhead insulated cable of the present invention, wherein: the bending part of the elastic clamping piece penetrates through the air tap and stretches into the inner side surface of the aramid fiber reinforced layer.
As a preferred embodiment of the high-strength light overhead insulated cable of the present invention, wherein: the glue injection hole is large at the outer part and small at the inner part, has a trapezoid cross section and is glued with the inner wall of the outer sheath.
As a preferred embodiment of the high-strength light overhead insulated cable of the present invention, wherein: the outer sheath is made of thickened polyolefin material.
The invention provides a high-strength light overhead insulated cable through improvement, which has the following remarkable improvements and advantages compared with the prior art:
(1) The columnar air bag is designed, the columnar air bag has multiple functions, the columnar air bag can play a role in buffering, the damage of external acting force to the inner core is reduced, the original armor protection layer is replaced by the second armor protection layer, the whole weight of the cable is reduced, the columnar air bag is changed into a light cable, when sparks or flames are generated around a third cable, the columnar air bag is burnt inwards, carbon dioxide gas is released, the flame retardant effect is achieved, and accordingly the fireproof performance of the cable is improved.
(2) When the inner core works to generate high temperature, part of heat is transferred to the columnar air bags, so that the internal air is heated and expanded, the air bags are slightly expanded outwards, the convex lips on each group of air nozzles are expanded, the flow area of the air nozzles is enlarged, the heat is accelerated to be discharged into the heat dissipation cavity, the heat dissipation effect is improved, and accordingly the adaptability adjustment can be achieved according to the internal heat dissipation requirement.
(3) The connecting piece with the injecting glue is plugged into the heat dissipation cavity first, receive both sides extrusion, reach spacing effect, realize the fixed with the inner wall of oversheath through the glue in the injecting glue hole, simultaneously with the bending part of elastic clamping piece pass the air cock stretch into aramid fiber enhancement layer's medial surface department, elastic clamping piece cooperation connecting piece forms the centre gripping form, install a plurality of groups of connecting pieces according to above process in proper order, the rotation bearing of double connector inserts corresponding fixed screw thread section of thick bamboo again, realize threaded connection, thereby make double connector fix in cable inside, at this moment, the double thread section of thick bamboo on the double connector can be used for connecting the gasbag of segmentation, and the threaded connection head of columnar gasbag rotates to be connected, reach the fixed effect of connection, solve the installation problem of segmentation gasbag, and because columnar gasbag can be compressed or bend, consequently can be through rotating oneself, with preceding double connector synchronous connection, accelerate connecting speed.
(4) The elastic clamping piece is used, the elastic clamping piece deforms in the process of transferring lateral acting force of the double connector, and the buffer protection effect can be achieved, so that the phenomenon that acting force is fully acted on the outer sheath and local bulge of the outer sheath occurs is avoided, the elastic clamping piece is pressed down and tightly pressed on the aramid fiber reinforcing layer, and the stability of the double connector and the overall structural strength of the cable are further enhanced.
Drawings
FIG. 1 is a schematic view of the overall structure of a high strength lightweight overhead insulated cable of the present invention;
FIG. 2 is a specific block diagram of the cable internal unit of the present invention;
FIG. 3 is an enlarged view of a portion of the aramid reinforcement layer of FIG. 1 of the present invention;
FIG. 4 is a view showing the connection of adjacent airbags according to the present invention;
FIG. 5 is a view showing the connection of both ends of the columnar airbag of the present invention;
FIG. 6 is a specific block diagram of a dual adapter of the present invention;
FIG. 7 is a front view of the connecting tab of the invention;
Fig. 8 is a rear view of the connecting tab of the invention.
In the figure: 1. an inner core; 2. an insulating layer; 3. an insulating rope; 4. bundling films; 5. a columnar balloon; 6. a carbon dioxide lumen; 7. a recessed portion; 8. an aramid fiber reinforcing layer; 9. a double connector; 91. an annular frame; 92. a double thread cylinder; 93. a first joint thread; 94. a second joint thread; 95. fixing the column; 96. a rotating bearing; 10. an outer sheath; 11. a heat dissipation cavity; 12. an air tap; 13. a lip; 14. a chamfering part; 15. tightly sleeving; 16. a threaded connector; 20. a connecting sheet; 21. a glue injection hole; 22. an elastic clamping piece; 23. and fixing the threaded cylinder.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
Embodiment one:
As shown in fig. 1-3, the embodiment provides a high-strength light overhead insulated cable, which comprises an inner core 1, wherein an insulating layer 2 is wrapped on the outer side of the inner core 1, and the inner core 1 is uniformly distributed around the central line of the cable in a plurality of groups and is abutted against in sequence.
Further, the areas between the several groups of inner cores 1 are filled with insulating ropes 3 and are tightly filled, the compactness of the internal unit is improved, and the outer sides of the several groups of inner cores 1 are wrapped around the outer ring by using a bundling film 4, as shown in fig. 1 and 2.
Further, a recess 7 is formed between adjacent cores 1 at an outer position as shown in fig. 1.
Specifically, the columnar air bags 5 are extruded into the concave parts 7, the carbon dioxide inner cavities 6 are arranged in the columnar air bags 5, the outer sides of the columnar air bags 5 are in contact with the aramid fiber reinforced layer 8, and the columnar air bags play a supporting role through air pressure, as shown in fig. 1 and 2.
In this embodiment, the outer side of the aramid fiber reinforced layer 8 is wrapped with the outer sheath 10, the outer sheath 10 plays a role in protection, the positions of the aramid fiber reinforced layer 8 and the outer sheath 10 in contact with each other are uniformly provided with the heat dissipation cavities 11, and the heat dissipation cavities 11 are used for carrying out dispersed transfer on the inner heat to the outer sheath 10, so that the transfer efficiency is faster than the heat conduction transfer between the layers, as shown in fig. 1.
In this embodiment, the air tap 12 is provided in the middle of the heat dissipation cavity 11, the two sides of the air tap 12 are symmetrically provided with the protruding lips 13, and the two groups of protruding lips 13 are combined in opposite directions under normal conditions, and only a gap is left, so that the compactness of the internal structure is enhanced, as shown in fig. 3.
Further, the carbon dioxide inner cavity 6 is filled with carbon dioxide flame-retardant gas.
Further, the outer sheath 10 is made of a thickened polyolefin material.
When the novel heat-insulating composite material is used, the inner cores 1, the insulating layer 2, the bundling film 4, the aramid fiber reinforcing layer 8 and the outer sheath 10 are sequentially arranged from inside to outside, the adjacent inner cores 1 are wrapped by the insulating layer 2 to play an insulating role, all the inner cores 1 are gathered at the central position of the cable by the bundling film 4, the columnar air bags 5 are arranged outside the bundling film 4, the aramid fiber reinforcing layer 8 is wrapped on the outer ring of the bundling film 4 through the isolation effect of the columnar air bags 5, the columnar air bags 5 can play a buffering role for the first time, the damage of external acting force to the inner cores 1 is reduced, the second replaces the original armor protection layer, the whole weight of the cable is reduced, the cable is changed into a light cable, when sparks or flames are generated around the third cable, the air bags are burned inwards to release carbon dioxide gas to play a flame retardant effect, thereby improving the fireproof performance of the cable, when the inner cores 1 work at a high temperature, part of heat is transferred to the columnar air bags 5, the internal gas is heated to expand, the air bags are slightly expanded outwards, the outer diameter of the aramid fiber reinforcing layer 8 is enlarged, the convex lips 13 on each group of air nozzles 12 are caused, the area of the air nozzles 12 is expanded, the heat is accelerated, the heat is discharged into the light cable, the heat is expanded, the heat dissipation effect is increased, and the heat dissipation effect is improved, and the heat radiation effect is improved, and the heat is increased, and the heat is increased by the heat radiation effect is improved, and the heat is heat radiation effect is increased.
Embodiment two:
based on the first embodiment, due to the material property and cost of the air bag, the air bag with the corresponding length cannot be installed in the cable according to the length of the cable, and the existing similar cable cannot be manufactured by using the air bag, so that the air bag needs to be installed in a segmented manner, and a series of technical problems of connection and fixation are caused in the segmented manner, and therefore, the double connector 9 is designed, as shown in fig. 4-8.
Specifically, the two ends of the columnar airbag 5 are symmetrically provided with chamfer portions 14, the chamfer portions 14 play a role in guiding connection, and the tight sleeve 15 is prevented from being larger than the columnar airbag 5 in size, as shown in fig. 5.
Further, a tightening sleeve 15 is clamped outside the chamfer portion 14, a plurality of groups of clamps are arranged on the inner wall inside the tightening sleeve 15 and act on the air bag surface of the chamfer portion 14, and a threaded connector 16 is welded on the end surface of the tightening sleeve 15, as shown in fig. 5.
Further, several sets of columnar air bags 5 are horizontally and equidistantly arranged, and adjacent columnar air bags 5 are connected by using double connectors 9, as shown in fig. 4.
Specifically, the double adapter 9 includes an annular frame 91, a double threaded cylinder 92, a first adapter thread 93, a second adapter thread 94, a fixed post 95, and a rotational bearing 96, as shown in fig. 6.
In this embodiment, the annular frame 91 has two threaded cylinders 92 uniformly distributed around its circumference and equal in number to the columnar air bags 5, and a first joint thread 93 and a second joint thread 94 are sequentially disposed in the two threaded cylinders 92, and are connected to the threaded connector 16.
In this embodiment, a fixing post 95 is welded to the outer side surface of the annular frame 91, a rotating bearing 96 is sleeved on the fixing post 95, the rotating bearing 96 rotates around the fixing post 95, and external threads are provided on the outer surface of the rotating bearing 96.
Further, the connecting piece 20 is filled in the heat dissipation cavity 11, and the two widths are the same and matched, so that the connection stability is enhanced.
In this embodiment, a row of glue injection holes 21 are formed at the upper end of the connecting piece 20, as shown in fig. 8.
In this embodiment, an elastic clamping piece 22 is welded on the inner side surface of the connecting piece 20, a fixed threaded cylinder 23 is welded in the middle of the outer surface of the elastic clamping piece 22, and the fixed threaded cylinder 23 is inserted into and connected with a rotating bearing 96, as shown in fig. 7.
In this embodiment, the bending portion of the elastic clip 22 extends into the inner side surface of the aramid fiber reinforced layer 8 through the air tap 12.
Further, the glue injection hole 21 has a trapezoid cross section and is glued to the inner wall of the outer sheath 10 to perform a connecting function, as shown in fig. 8.
When the dual-connector device is used, firstly, the injected connecting piece 20 is plugged into the heat dissipation cavity 11 and is extruded by two sides to achieve the limiting effect, the fixing of the inner wall of the outer sheath 10 is achieved through glue in the glue injection hole 21, meanwhile, the bending part of the elastic clamping piece 22 penetrates through the air tap 12 to extend into the inner side face of the aramid fiber reinforced layer 8, the elastic clamping piece 22 is matched with the connecting piece 20 to form a clamping mode, a plurality of groups of connecting pieces 20 are sequentially installed according to the above process, then the rotating bearing 96 of the dual-connector 9 is inserted into the corresponding fixed threaded cylinder 23 and screwed, threaded connection is achieved, so that the dual-connector 9 is fixed inside a cable, at this time, the dual-threaded cylinder 92 on the dual-connector 9 can be used for connecting segmented air bags and the threaded connector 16 of the columnar air bags 5 in a rotating mode, and because the columnar air bags 5 can be compressed or bent (the connecting angle is convenient to adjust) and connected with the front and rear dual-connector 9 synchronously, the columnar air bags 5 can be sequentially installed in each group of the dual-threaded cylinders 92 on the dual-connector 9, and the installation and connection problems are solved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. High strength light overhead insulated cable, including inner core (1), its characterized in that: the outer side of the inner core (1) is wrapped with an insulating layer (2), the inner cores (1) are uniformly distributed around the central line of the cable in a plurality of groups and are propped against each other in sequence, the areas between the inner cores (1) in the plurality of groups are filled with insulating ropes (3), and the outer sides of the inner cores (1) in the plurality of groups are wrapped around the outer ring by using bundling films (4);
A concave part (7) is formed between the adjacent inner cores (1) at an outer position, a columnar air bag (5) is extruded into the concave part (7), a carbon dioxide inner cavity (6) is arranged in the columnar air bag (5), and a plurality of groups of outer sides of the columnar air bags (5) are abutted against the aramid fiber reinforcing layer (8);
The outer side of the aramid fiber reinforced layer (8) is wrapped with an outer sheath (10), a heat dissipation cavity (11) is uniformly formed in the position, which is in contact with the outer sheath (10), of the aramid fiber reinforced layer (8), an air tap (12) is formed in the middle of the heat dissipation cavity (11), and protruding lips (13) are symmetrically arranged on two sides of the air tap (12);
Chamfer portions (14) are symmetrically arranged at two ends of the columnar air bag (5), a tight sleeve (15) is arranged outside the chamfer portions (14) in a clamping mode, and a threaded connector (16) is welded on the end face of the tight sleeve (15);
The columnar air bags (5) are horizontally and equidistantly arranged, and adjacent columnar air bags (5) are connected by double connectors (9);
The double connector (9) comprises an annular frame (91), double threaded barrels (92), first connector threads (93), second connector threads (94), fixing columns (95) and rotating bearings (96), the double threaded barrels (92) which are uniformly distributed in the annular frame (91) in a circle and are equal in number to columnar air bags (5), the first connector threads (93) and the second connector threads (94) are sequentially arranged in the double threaded barrels (92) and are connected with threaded connectors (16), the fixing columns (95) are outwards welded on the outer side face of the annular frame (91), and the rotating bearings (96) are sleeved on the fixing columns (95);
The heat dissipation cavity (11) is filled with a connecting sheet (20), the widths of the connecting sheet and the connecting sheet are the same, the upper end part of the connecting sheet (20) is provided with a row of glue injection holes (21), an elastic clamping piece (22) is welded on the inner side surface of the connecting sheet (20), a fixed thread cylinder (23) is welded in the middle of the outer surface of the elastic clamping piece (22), and the fixed thread cylinder (23) is used for inserting a rotating bearing (96) to be connected.
2. A high strength lightweight overhead insulated cable according to claim 1, wherein: the carbon dioxide inner cavity (6) is filled with carbon dioxide flame-retardant gas.
3. A high strength lightweight overhead insulated cable according to claim 1, wherein: the outer surface of the rotary bearing (96) is provided with external threads.
4. A high strength lightweight overhead insulated cable according to claim 1, wherein: the bending part of the elastic clamping piece (22) penetrates through the air tap (12) and stretches into the inner side surface of the aramid fiber reinforced layer (8).
5. A high strength lightweight overhead insulated cable according to claim 1, wherein: the glue injection hole (21) is large at the outer part and small at the inner part, has a trapezoid cross section and is glued with the inner wall of the outer sheath (10).
6. A high strength lightweight overhead insulated cable according to claim 1, wherein: the outer sheath (10) is made of thickened polyolefin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310534264.4A CN116844768B (en) | 2023-05-12 | 2023-05-12 | High-strength light overhead insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310534264.4A CN116844768B (en) | 2023-05-12 | 2023-05-12 | High-strength light overhead insulated cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116844768A CN116844768A (en) | 2023-10-03 |
| CN116844768B true CN116844768B (en) | 2024-06-07 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310534264.4A Active CN116844768B (en) | 2023-05-12 | 2023-05-12 | High-strength light overhead insulated cable |
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| CN116844768A (en) | 2023-10-03 |
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