CN117253663B - Bending-resistant flame-retardant fireproof cable - Google Patents
Bending-resistant flame-retardant fireproof cable Download PDFInfo
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- CN117253663B CN117253663B CN202311540171.9A CN202311540171A CN117253663B CN 117253663 B CN117253663 B CN 117253663B CN 202311540171 A CN202311540171 A CN 202311540171A CN 117253663 B CN117253663 B CN 117253663B
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- supporting
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- bending
- plastic pipe
- outer side
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- 238000005452 bending Methods 0.000 title claims abstract description 41
- 239000003063 flame retardant Substances 0.000 title claims abstract description 41
- 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 title claims abstract description 34
- 229920002457 flexible plastic Polymers 0.000 claims abstract description 42
- 229920003023 plastic Polymers 0.000 claims abstract description 18
- 239000004033 plastic Substances 0.000 claims abstract description 18
- 239000011241 protective layer Substances 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims description 100
- 229910052751 metal Inorganic materials 0.000 claims description 29
- 239000002184 metal Substances 0.000 claims description 29
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 20
- 239000004917 carbon fiber Substances 0.000 claims description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 20
- 238000009954 braiding Methods 0.000 claims description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 239000004020 conductor Substances 0.000 claims description 15
- 239000002985 plastic film Substances 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000017525 heat dissipation Effects 0.000 claims description 10
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 8
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000012790 adhesive layer Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000126 substance Substances 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
- H01B7/24—Devices affording localised protection against mechanical force or pressure
-
- 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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
-
- 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
- H01B7/08—Flat or ribbon cables
-
- 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
- H01B7/1805—Protections not provided for in groups H01B7/182 - H01B7/26
-
- 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
- H01B7/1875—Multi-layer sheaths
-
- 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
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/226—Helicoidally wound metal wires or tapes
-
- 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
-
- 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
- Insulated Conductors (AREA)
Abstract
The invention discloses a bending-resistant flame-retardant fireproof cable, which relates to the technical field of cables, wherein a reinforced supporting component is arranged on the outer side of an inner wire protective layer, adjacent supporting rings are connected through a rotating shaft, a rectangular plastic pipe is arranged in a positioning groove, a fracture groove is formed in the middle of a flame retardant filling pipe, central holes are formed in the middle of two ends of the flexible plastic pipe, supporting inner rings are adhered to the other ends of the flexible plastic pipe, and the inner wire protective layer is provided with an inner limiting component.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a bending-resistant flame-retardant fireproof cable.
Background
The cable is a wire product for transmitting electric energy, information and realizing electromagnetic energy conversion, has wide application range, uses different cables under different environments and demands, is a cable suitable for occasions with frequent bending, is not twisted, is folded neatly, and is suitable for electric connection between mobile electric appliances in severe environments such as power generation, metallurgy, chemical industry, ports and the like.
However, when the cable in the current market is bent, the damage or the uneven stress on the outer side of the cable is easy to cause the problem that the damage is accelerated and the service life is reduced when the local bending angle of the cable is overlarge, and the contact area between the flat cable and the outside is larger, so that the flat cable is more easy to damage due to heating and burning compared with the common cable.
Disclosure of Invention
The invention provides a bending-resistant flame-retardant fireproof cable, which can effectively solve the problems that when the cable is bent, the damage or uneven stress on the outer side of the cable is easy to cause the overlarge local bending angle of the cable to cause the accelerated damage and the reduced service life in bending, and the contact area between the flat cable and the outside is larger, compared with the common cable, the flat cable is more easy to damage due to heating and burning.
In order to achieve the above purpose, the present invention provides the following technical solutions: the bending-resistant flame-retardant fireproof cable comprises an inner wire protection layer, wherein a reinforced support assembly is arranged on the outer side of the inner wire protection layer, and the reinforced support assembly comprises a support ring;
the outer sides of the inner wire protection layers are uniformly sleeved with supporting rings, adjacent supporting rings are connected through rotating shafts, and a plurality of inner wire protection layers are wrapped in the metal braiding layers;
the gap between the metal braiding layer and the inner lead protective layer is filled with a filling layer, a positioning groove is formed in the position, located at the gap, of the supporting ring of the filling layer, a rectangular plastic pipe is installed in the positioning groove, a supporting rubber column is bonded in the middle of the rectangular plastic pipe, two ends of the rectangular plastic pipe are connected with flexible plastic pipes, and a flame retardant filling pipe is installed in the flexible plastic pipe;
the middle part of the fire retardant filling pipe is provided with a breaking groove, both ends of the fire retardant filling pipe are connected with end plates, the outer side of the fire retardant filling pipe is sleeved with a supporting spring, and the edges of the end plates are uniformly provided with side holes;
the middle parts of the two ends of the flexible plastic pipe are respectively provided with a central hole, one end of the flexible plastic pipe is adhered with a supporting outer pipe, the other end of the flexible plastic pipe is adhered with a supporting inner ring, and the part of the filling layer corresponding to the flexible plastic pipe is provided with a vent hole.
According to the technical scheme, the outer insulating layer is sleeved outside the metal braiding layer, the plugging block is welded at the position, close to the metal braiding layer, of the middle part of the outer side of the flexible plastic pipe, the heat dissipation holes are formed in the positions, corresponding to the plugging block, of the metal braiding layer and the outer insulating layer, and the heat dissipation holes of the outer insulating layer are internally inlaid with insulating plugs.
According to the technical scheme, the support steel wires are arranged in the filling layer at the two sides of the inner wire protection layer in a penetrating mode, and aluminum hydroxide coating is wrapped on the outer sides of the support steel wires.
According to the technical scheme, the two ends of the supporting ring are symmetrically welded with the connecting blocks, and the middle parts of the adjacent connecting blocks rotate to penetrate through the mounting rotating shaft;
the rectangular plastic pipe is communicated with the flexible plastic pipe, and the outer side of the flexible plastic pipe is attached to the inner wall of the vent hole.
According to the technical scheme, the inner diameter of the outer supporting pipe is equal to the outer diameter of the inner supporting ring, the outer side edge of the inner supporting ring is chamfered, and the outer diameter of the outer supporting pipe is equal to the diameter of the vent hole.
According to the technical scheme, aluminum hydroxide powder is filled in the flame retardant filling pipe, and the end part of the supporting spring is fixedly connected with the end plate.
According to the technical scheme, the inner wire protection layer is provided with an inner limit component, and the inner limit component comprises a reinforced metal wire;
the inner wire protection layer is internally provided with a reinforced metal wire, the outer side of the reinforced metal wire is wrapped with a copper wire, the outer side of the copper wire is wrapped with an inner insulating layer, the outer side of the inner insulating layer is uniformly sleeved with an inner positioning ring, the outer side of the inner positioning ring is sleeved with an outer positioning ring, a rubber sheet is uniformly adhered between the inner positioning ring and the outer positioning ring, and inflatable bags are symmetrically arranged between the adjacent inner positioning rings;
the opposite ends of the inflatable bag are coated with adhesive layers, the two ends of the inflatable bag are uniformly provided with exhaust holes, one end, close to the inner positioning ring, of the inflatable bag is adhered with a plastic sheet, and the inner side of the inflatable bag is adhered with an inner carbon fiber membrane;
the outside of the inflatable bag and the outside of the outer positioning ring are wrapped with carbon fiber woven layers.
According to the technical scheme, the two inflatable bags positioned between the adjacent positioning rings are combined to form a hollow cylinder, the plastic sheet is semi-annular, the diameter of the exhaust hole is smaller than the width of the plastic sheet, and nitrogen is filled in the inflatable bags.
According to the technical scheme, the inner wall of the inner wire protective layer is connected with the outer side of the carbon fiber woven layer in an adhesive mode, and the outer diameter of the outer positioning ring is equal to the outer diameter of the inflatable bag.
Compared with the prior art, the invention has the beneficial effects that:
1. the reinforced support assembly is arranged, when the cable is bent, the cable is bent only between the support rings due to the support of the support rings, the support springs deform and bend, and the end plates can squeeze the filling layer at the support rings, so that the bending amplitude of the conductor in the inner wire protection layer is reduced, the bending is more uniform due to the support of the support springs, and the damage caused by excessive bending of the conductor due to overlarge local bending is avoided;
when the cable is on fire due to high temperature outside the cable or high temperature inside the cable, the flexible plastic pipe, the supporting outer pipe and the flame retardant filling pipe are softened, the strength is reduced, the supporting spring pushes the end plate to break the end part of the flexible plastic pipe, the end part of the flexible plastic pipe does not shade the side holes, the adjacent flexible plastic pipes are mutually communicated, meanwhile, the flame retardant filling pipe can be broken, aluminum hydroxide powder in the cable flows out, the aluminum hydroxide powder is heated and decomposed to absorb heat, a large amount of water vapor is generated, the water vapor flows along the ventilation hole of the combustion section of the cable, the supporting outer pipe is softened and shrunk, the sealing block does not seal the heat dissipation holes any more, the insulating sealing block is broken by high-pressure vapor, the air is diluted and cooled, the combustion is prevented, the aluminum hydroxide coating on the outer side of the supporting steel wire is also decomposed and cooled, and the flame retardant effect is good.
2. The inner limiting component is arranged, when the conductor part in the cable heats, the plastic sheet is heated, shrunk and softened, the exhaust hole cannot be blocked, the adjacent inflatable bags are communicated with the outer positioning ring through the inner positioning ring, the outer side of the copper wire is filled with nitrogen, the cable is not easy to burn, the heat transfer effect is poor due to the blocking of the inflatable bags, and the influence of the inner wire protective layer outside the carbon fiber woven layer is small, so that the strength and the integrity of the cable can be ensured when the conductor heats;
and in the conductor department in the inner wire protection layer, when the cable is crooked, the air bag one side that is close to the inboard of cable bending is extruded, this part air bag volume diminishes for by the gas flow of extrusion side to the opposite side, the air bag volume grow in the outside that is close to the cable bending, and then make the copper line be pressed by the air bag and be close to air bag volume diminish department, namely the inboard of cable bending, the sheet rubber cooperation deformation, make in the cable outside, the crooked degree of inner conductor is littleer, and then reduce the bending loss of inner conductor again, extension cable life, bending resistance ability is better.
In conclusion, the reinforced supporting component and the inner limiting component can independently play roles in flame retardance and bending resistance, the reinforced supporting component and the inner limiting component simultaneously play roles in the cable close to the outer side and the inner side, the matching effect of the reinforced supporting component and the inner limiting component is better, and the flame retardance and the bending resistance are improved.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
In the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the reinforced support assembly of the present invention;
FIG. 3 is a schematic view of the installation structure of the flame retardant filler pipe of the present invention;
FIG. 4 is a schematic view of the mounting structure of the insulating plug of the present invention;
FIG. 5 is a schematic view of the inner limit assembly of the present invention;
FIG. 6 is a schematic view of the mounting structure of the inner carbon fiber membrane of the present invention;
FIG. 7 is a schematic view of the mounting structure of the rubber sheet of the present invention;
reference numerals in the drawings: 1. an inner wire protection layer;
2. reinforcing the support assembly; 201. a support ring; 202. a metal braid; 203. a filling layer; 204. a positioning groove; 205. rectangular plastic tube; 206. supporting a rubber column; 207. a flexible plastic tube; 208. a flame retardant filler tube; 209. a fracture groove; 210. an end plate; 211. a support spring; 212. a side hole; 213. a central bore; 214. supporting the outer tube; 215. supporting the inner ring; 216. a vent hole; 217. an outer insulating layer; 218. a block; 219. a heat radiation hole; 220. insulating and plugging; 221. supporting the steel wire; 222. aluminum hydroxide coating;
3. an inner limit assembly; 301. reinforcing metal wires; 302. copper wire; 303. an inner insulating layer; 304. an inner positioning ring; 305. an outer positioning ring; 306. a rubber sheet; 307. an inflatable bag; 308. an adhesive layer; 309. an exhaust hole; 310. a plastic sheet; 311. an inner carbon fiber film; 312. carbon fiber braid.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
Examples: as shown in fig. 1-7, the invention provides a bending-resistant flame-retardant fireproof cable technical scheme, which comprises an inner wire protective layer 1, wherein a reinforced support component 2 is arranged on the outer side of the inner wire protective layer 1, and the reinforced support component 2 comprises a support ring 201, a metal braiding layer 202, a filling layer 203, a positioning groove 204, a rectangular plastic pipe 205, a support rubber column 206, a flexible plastic pipe 207, a flame retardant filling pipe 208, a fracture groove 209, an end plate 210, a support spring 211, a side hole 212, a central hole 213, a support outer pipe 214, a support inner ring 215, a vent hole 216, an outer insulating layer 217, a plugging block 218, a heat dissipation hole 219, an insulating plug 220, a support steel wire 221 and an aluminum hydroxide coating 222;
the supporting rings 201 are uniformly sleeved on the outer sides of the inner wire protection layers 1, connecting blocks are symmetrically welded at the two ends of the supporting rings 201, the middle parts of the adjacent connecting blocks rotate to penetrate through the mounting rotating shafts, so that the supporting rings 201 are connected with each other, the adjacent supporting rings 201 are connected through the rotating shafts, the inner wire protection layers 1 are wrapped inside the metal braiding layers 202, a filling layer 203 is filled in gaps between the metal braiding layers 202 and the inner wire protection layers 1, supporting steel wires 221 are uniformly sleeved on the two sides of the inner wire protection layers 1 inside the filling layer 203, aluminum hydroxide coating 222 is wrapped on the outer sides of the supporting steel wires 221, the tensile strength of a cable is further improved, positioning grooves 204 are formed in the positions, located at the gaps, of the supporting rings 201, rectangular plastic pipes 205 are mounted inside the positioning grooves 204, supporting rubber columns 206 are bonded in the middle parts of the rectangular plastic pipes 205, flexible plastic pipes 207 are connected to the two ends of the rectangular plastic pipes 207, flame retardant filling pipes 208 are mounted inside the flexible plastic pipes 207, fracture grooves 209 are formed in the middle of the flame retardant filling pipes 208, end plates 210 are fixedly connected with end plates 210, supporting springs 211 are sleeved on the outer sides of the flame retardant filling pipes 208, and aluminum hydroxide powder is filled inside the flame retardant filling pipes 208;
the end part of the supporting spring 211 is fixedly connected with the end plate 210, so that the supporting spring 211 is convenient to fixedly mount, side holes 212 are uniformly formed in the edge of the end plate 210, central holes 213 are formed in the middle parts of the two ends of the flexible plastic tube 207, one end of the flexible plastic tube 207 is adhered with a supporting outer tube 214, the other end of the flexible plastic tube 207 is adhered with a supporting inner ring 215, a vent hole 216 is formed in the part of the filling layer 203 corresponding to the flexible plastic tube 207, the inner diameter of the supporting outer tube 214 is equal to the outer diameter of the supporting inner ring 215, the outer side edge of the supporting inner ring 215 is chamfered, the outer diameter of the supporting outer tube 214 is equal to the diameter of the vent hole 216, the rectangular plastic tube 205 and the flexible plastic tube 207 are mutually communicated, the outer side of the flexible plastic tube 207 is adhered to the inner wall of the vent hole 216, the tightness of the cable is guaranteed, the outer side is a smooth curved surface is guaranteed, and the supporting outer tube 214 and the supporting inner ring 215 is conveniently butted;
an outer insulating layer 217 is sleeved on the outer side of the metal braiding layer 202, a plugging block 218 is welded at the position, close to the metal braiding layer 202, of the middle of the outer side of the flexible plastic pipe 207, a heat dissipation hole 219 is formed in the position, corresponding to the plugging block 218, of the metal braiding layer 202 and the outer insulating layer 217, and an insulating plug 220 is embedded in the heat dissipation hole 219 of the outer insulating layer 217.
The inner wire protection layer 1 is provided with an inner limit component 3, and the inner limit component 3 comprises a reinforced metal wire 301, a copper wire 302, an inner insulating layer 303, an inner positioning ring 304, an outer positioning ring 305, a rubber sheet 306, an inflatable bag 307, an adhesive layer 308, an exhaust hole 309, a plastic sheet 310, an inner carbon fiber film 311 and a carbon fiber woven layer 312;
the inside of the inner wire protective layer 1 is provided with a reinforced metal wire 301, the outside of the reinforced metal wire 301 is wrapped with a copper wire 302, the outside of the copper wire 302 is wrapped with an inner insulating layer 303, the outside of the inner insulating layer 303 is uniformly sleeved with an inner positioning ring 304, the outside of the inner positioning ring 304 is sleeved with an outer positioning ring 305, a rubber sheet 306 is uniformly adhered between the inner positioning ring 304 and the outer positioning ring 305, an inflatable bag 307 is symmetrically arranged between the adjacent inner positioning rings 304, the opposite ends of the inflatable bag 307 are coated with adhesive layers 308, the two ends of the inflatable bag 307 are uniformly provided with exhaust holes 309, and one end, close to the inner positioning ring 304, of the inflatable bag 307 is adhered with a plastic sheet 310;
the two inflatable bags 307 positioned between adjacent inner positioning rings 304 are combined to form a hollow cylinder, the plastic sheet 310 is semi-annular, the diameter of the exhaust hole 309 is smaller than the width of the plastic sheet 310, nitrogen is filled in the inflatable bags 307, the inflatable bags 307 are conveniently wrapped for protecting wires inside, an inner carbon fiber film 311 is bonded on the inner side of each inflatable bag 307, carbon fiber woven layers 312 are wrapped on the outer sides of the inflatable bags 307 and the outer positioning rings 305, the outer sides of the carbon fiber woven layers 312 are bonded and connected on the inner walls of the inner wire protective layers 1, the outer diameters of the outer positioning rings 305 are equal to the outer diameters of the inflatable bags 307, and gaps among the inner wire protective layers 1, the carbon fiber woven layers 312, the outer positioning rings 305 and the inflatable bags 307 are reduced.
The working principle and the using flow of the invention are as follows: aluminum hydroxide flame retardant is filled in the flame retardant filling pipe 208, the supporting springs 211 push the end plates 210 to extrude the two ends of the inside of the flexible plastic pipe 207, the flexible plastic pipe 207 is supported to be cylindrical, and the supporting rubber columns 206 support the rectangular plastic pipe 205 to prevent deformation of the rectangular plastic pipe 205 in the storage process;
the outer side of the copper wire 302 is wrapped with an inner insulating layer 303 through a cable extruder, then inner positioning rings 304 are sleeved at equal intervals, inflatable bags 307 are symmetrically arranged between the inner positioning rings 304, the end parts of the inflatable bags 307 are bonded into a cylinder shape through bonding layers 308, inner carbon fiber films 311 are tightly attached to the outer side of the inner insulating layer 303, then the outer side of the inflatable bags 307 is wrapped with a carbon fiber woven layer 312 to prevent the inflatable bags 307 from loosening, then an inner wire protection layer 1 is wrapped on the outer side of the carbon fiber woven layer 312 through the cable extruder, the inner wire protection layers 1 are conveyed in parallel, and support rings 201 connected through hinges are sleeved on the outer sides;
the supporting rings 201, the rectangular plastic pipe 205 and the flexible plastic pipe 207 are alternately arranged, the supporting outer pipe 214 and the supporting inner ring 215 are in butt joint, supporting steel wires 221 are arranged on two sides of the inner wire protection layer 1, the filling layer 203 is wrapped by a cable extruder again, the metal braiding layer 202 is wrapped on the outer side of the filling layer 203, at the moment, the plugging block 218 exceeds the outer side of the filling layer 203, a heat dissipation hole 219 is reserved at the position of the metal braiding layer 202, the outer insulating layer 217 is wrapped on the outer side of the metal braiding layer 202 by the cable extruder, at the moment, the thickness of the outer insulating layer 217 at the position of the end part of the plugging block 218 is thinner, and the plugging block is easier to break;
when the cable is bent, the cable is bent only between the supporting rings 201 due to the supporting of the supporting rings 201, the supporting springs 211 deform and bend, the end plate 210 can squeeze the filling layer 203 at the supporting ring 201, so that the bending amplitude of the conductor in the inner wire protective layer 1 is reduced, damage caused by excessive bending of the conductor due to overlarge local bending is avoided, and at the conductor in the inner wire protective layer 1, one side of the inflatable bag 307 close to the inner side of the cable bending is squeezed when the cable is bent, the volume of the inflatable bag 307 is reduced, so that the gas on the squeezed side flows to the other side, the volume of the inflatable bag 307 close to the outer side of the cable bending is increased, the copper wire 302 is squeezed by the inflatable bag 307 to be reduced, namely the inner side of the cable bending is deformed in a matching manner, so that compared with the outer side of the cable, the bending degree of the inner conductor is smaller, the bending loss of the inner conductor is reduced again, the service life of the cable is prolonged, and the bending resistance is better;
when the conductor part inside the cable heats, the plastic sheet 310 is heated, shrunk and softened, the exhaust hole 309 cannot be blocked, the adjacent inflatable bags 307 are communicated with the outer positioning ring 305 through the inner positioning ring 304, the outer side of the copper wire 302 is filled with nitrogen, the cable is not easy to burn, the heat transfer effect is poor due to the blocking of the inflatable bags 307, and the influence of the inner wire protective layer 1 outside the carbon fiber woven layer 312 is small, so that the strength and the integrity of the cable can be ensured when the conductor heats;
when the cable is on fire due to high temperature outside the cable or high temperature inside the cable, the flexible plastic pipe 207, the supporting outer pipe 214 and the flame retardant filling pipe 208 are softened, the strength is reduced, the supporting spring 211 pushes the end plate 210 to break the end part of the flexible plastic pipe 207, the end part of the flexible plastic pipe 207 does not shield the side holes 212, the adjacent flexible plastic pipes 207 are communicated with each other, the flame retardant filling pipe 208 is broken, aluminum hydroxide powder in the inner part flows out, the aluminum hydroxide powder is heated and decomposed to absorb heat, a large amount of water vapor is generated, the water vapor flows along the ventilation holes 216 of the combustion section of the cable, the sealing block 218 does not seal the heat dissipation holes 219 any more due to the fact that the supporting outer pipe 214 is softened and shrunk, the insulating sealing block 220 is broken by high-pressure steam, diluted air is cooled, combustion is prevented, the aluminum hydroxide coating 222 outside the supporting steel wire 221 is decomposed and cooled equally, the flame retardant effect is good, and the outer side of the inner wire protection layer 1 is filled with nitrogen due to the heating of the air filling bag 307 of the inner limiting component 3, so that the influence of the combustion on the copper wire 302 is smaller, and the smoothness of a circuit is kept;
the reinforced support component 2 and the inner limit component 3 can independently play roles in flame retardance and bending resistance, the reinforced support component 2 and the inner limit component 3 simultaneously play roles in the cable near the outer side and the inner side, the matching effect of the reinforced support component 2 and the inner limit component 3 is better, and the flame retardance and the bending resistance are improved.
Finally, it should be noted that: the foregoing is merely a preferred example of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a fire-retardant type fireproof cable of bending-resistant, includes interior wire protective layer (1), its characterized in that: the outer side of the inner wire protection layer (1) is provided with a reinforced supporting component (2), and the reinforced supporting component (2) comprises a supporting ring (201);
the outer sides of the inner wire protection layers (1) are uniformly sleeved with supporting rings (201), adjacent supporting rings (201) are connected through rotating shafts, and a plurality of inner wire protection layers (1) are wrapped inside the metal braiding layers (202);
the gap between the metal braiding layer (202) and the inner lead protective layer (1) is filled with a filling layer (203), a positioning groove (204) is formed in the gap between the filling layer (203) and the supporting ring (201), a rectangular plastic pipe (205) is arranged in the positioning groove (204), a supporting rubber column (206) is bonded in the middle of the rectangular plastic pipe (205), flexible plastic pipes (207) are connected to two ends of the rectangular plastic pipe (205), and a flame retardant filling pipe (208) is arranged in the flexible plastic pipe (207);
the middle part of the fire retardant filling pipe (208) is provided with a breaking groove (209), two ends of the fire retardant filling pipe (208) are connected with end plates (210), the outer side of the fire retardant filling pipe (208) is sleeved with a supporting spring (211), and the edges of the end plates (210) are uniformly provided with side holes (212);
center holes (213) are formed in the middle of two ends of the flexible plastic pipe (207), one end of the flexible plastic pipe (207) is adhered with a supporting outer pipe (214), the other end of the flexible plastic pipe (207) is adhered with a supporting inner ring (215), and ventilation holes (216) are formed in the positions, corresponding to the flexible plastic pipe (207), of the filling layer (203);
the outer side of the metal braiding layer (202) is sleeved with an outer insulating layer (217), a plugging block (218) is welded at the position, close to the metal braiding layer (202), of the middle of the outer side of the flexible plastic pipe (207), a heat dissipation hole (219) is formed in the position, corresponding to the plugging block (218), of the metal braiding layer (202) and the outer insulating layer (217), and an insulating plug (220) is embedded in the heat dissipation hole (219) of the outer insulating layer (217).
2. The bending-resistant flame-retardant fireproof cable as claimed in claim 1, wherein the filler layer (203) is internally provided with supporting steel wires (221) in a penetrating manner at two sides of the inner wire protection layer (1), and the supporting steel wires (221) are externally coated with aluminum hydroxide coating (222).
3. The bending-resistant flame-retardant fireproof cable as claimed in claim 1, wherein the two ends of the supporting ring (201) are symmetrically welded with connecting blocks, and the middle parts of the adjacent connecting blocks rotate to penetrate through the installation rotating shaft;
the rectangular plastic pipe (205) and the flexible plastic pipe (207) are mutually communicated, and the outer side of the flexible plastic pipe (207) is attached to the inner wall of the ventilation hole (216).
4. A bending-resistant flame-retardant fireproof cable according to claim 1, wherein the inner diameter of the outer supporting tube (214) is equal to the outer diameter of the inner supporting ring (215), the outer side edge of the inner supporting ring (215) is chamfered, and the outer diameter of the outer supporting tube (214) is equal to the diameter of the vent hole (216).
5. The bending-resistant flame-retardant fireproof cable according to claim 1, wherein the flame retardant filling pipe (208) is filled with aluminum hydroxide powder, and the end of the supporting spring (211) is fixedly connected with the end plate (210).
6. A bending-resistant flame-retardant fireproof cable according to claim 2, characterized in that the inner conductor protection layer (1) is provided with an inner limit assembly (3), the inner limit assembly (3) comprising a reinforcing wire (301);
the inner lead protection layer (1) is internally provided with a reinforced metal wire (301), the outer side of the reinforced metal wire (301) is wrapped with a copper wire (302), the outer side of the copper wire (302) is wrapped with an inner insulating layer (303), the outer side of the inner insulating layer (303) is uniformly sleeved with an inner positioning ring (304), the outer side of the inner positioning ring (304) is sleeved with an outer positioning ring (305), rubber sheets (306) are uniformly adhered between the inner positioning ring (304) and the outer positioning ring (305), and inflatable bags (307) are symmetrically arranged between the adjacent inner positioning rings (304);
the bonding layers (308) are smeared on the opposite ends of the inflatable bag (307), the two ends of the inflatable bag (307) are uniformly provided with the exhaust holes (309), one end, close to the inner positioning ring (304), of the inflatable bag (307) is bonded with the plastic sheet (310), and the inner side of the inflatable bag (307) is bonded with the inner carbon fiber membrane (311);
the outsides of the inflatable bag (307) and the outer positioning ring (305) are wrapped with carbon fiber woven layers (312).
7. The bending-resistant flame-retardant fireproof cable as claimed in claim 6, wherein two inflatable bags (307) positioned between adjacent positioning rings (304) are combined to form a hollow cylinder, the plastic sheet (310) is semi-annular, the diameter of the exhaust hole (309) is smaller than the width of the plastic sheet (310), and nitrogen is filled in the inflatable bags (307).
8. The bending-resistant flame-retardant fireproof cable as claimed in claim 6, wherein the inner wall of the inner wire protection layer (1) is bonded with the outer side of the carbon fiber woven layer (312), and the outer diameter of the outer positioning ring (305) is equal to the outer diameter of the inflatable bag (307).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311540171.9A CN117253663B (en) | 2023-11-20 | 2023-11-20 | Bending-resistant flame-retardant fireproof cable |
| CN202410089306.2A CN117809897A (en) | 2023-11-20 | 2023-11-20 | Bending-resistant flame-retardant fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311540171.9A CN117253663B (en) | 2023-11-20 | 2023-11-20 | Bending-resistant flame-retardant fireproof cable |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410089306.2A Division CN117809897A (en) | 2023-11-20 | 2023-11-20 | Bending-resistant flame-retardant fireproof cable |
Publications (2)
| Publication Number | Publication Date |
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| CN117253663A CN117253663A (en) | 2023-12-19 |
| CN117253663B true CN117253663B (en) | 2024-02-13 |
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|---|---|---|---|
| CN202410089306.2A Pending CN117809897A (en) | 2023-11-20 | 2023-11-20 | Bending-resistant flame-retardant fireproof cable |
| CN202311540171.9A Active CN117253663B (en) | 2023-11-20 | 2023-11-20 | Bending-resistant flame-retardant fireproof cable |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410089306.2A Pending CN117809897A (en) | 2023-11-20 | 2023-11-20 | Bending-resistant flame-retardant fireproof cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118039234B (en) * | 2024-04-12 | 2024-06-21 | 广东南缆电缆有限公司 | Stretch-proof aviation cable |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1350276A (en) * | 1963-03-04 | 1964-01-24 | Telefunken Patent | Coaxial line comprising at least one insulating bearing washer |
| CN211150151U (en) * | 2019-12-12 | 2020-07-31 | 欧耐特线缆集团有限公司 | Special cable for coal mine safety |
| CN213242036U (en) * | 2020-10-19 | 2021-05-18 | 安徽新亚特电缆集团有限公司 | Flexible high-flame-retardance strong-flame-resistance control cable |
| CN116665982A (en) * | 2023-07-07 | 2023-08-29 | 宝辉线缆集团有限公司 | Wear-resistant and sun-proof high-voltage power cable |
| CN219626352U (en) * | 2023-01-10 | 2023-09-01 | 福建通宇电缆有限公司 | Insulated wire with good tensile property |
-
2023
- 2023-11-20 CN CN202410089306.2A patent/CN117809897A/en active Pending
- 2023-11-20 CN CN202311540171.9A patent/CN117253663B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1350276A (en) * | 1963-03-04 | 1964-01-24 | Telefunken Patent | Coaxial line comprising at least one insulating bearing washer |
| CN211150151U (en) * | 2019-12-12 | 2020-07-31 | 欧耐特线缆集团有限公司 | Special cable for coal mine safety |
| CN213242036U (en) * | 2020-10-19 | 2021-05-18 | 安徽新亚特电缆集团有限公司 | Flexible high-flame-retardance strong-flame-resistance control cable |
| CN219626352U (en) * | 2023-01-10 | 2023-09-01 | 福建通宇电缆有限公司 | Insulated wire with good tensile property |
| CN116665982A (en) * | 2023-07-07 | 2023-08-29 | 宝辉线缆集团有限公司 | Wear-resistant and sun-proof high-voltage power cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117253663A (en) | 2023-12-19 |
| CN117809897A (en) | 2024-04-02 |
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