CN113314264A - High-low voltage power cable - Google Patents
High-low voltage power cable Download PDFInfo
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- CN113314264A CN113314264A CN202110597477.2A CN202110597477A CN113314264A CN 113314264 A CN113314264 A CN 113314264A CN 202110597477 A CN202110597477 A CN 202110597477A CN 113314264 A CN113314264 A CN 113314264A
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000011247 coating layer Substances 0.000 claims abstract description 36
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 22
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
- A62C35/08—Containers destroyed or opened by bursting charge
-
- 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
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0216—Two layers
-
- 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
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- 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
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- 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
- H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
- H01B7/328—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising violation sensing means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/005—Power cables including optical transmission elements
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The invention discloses a high-low voltage power cable which comprises a cable core, wherein a first insulating layer is arranged on the outer surface of the cable core, a second insulating layer is arranged on the outer surface of the first insulating layer, the first insulating layer is wrapped in the second insulating layer, a first cavity is formed between the first insulating layer and the cable core, a second cavity is formed between the first insulating layer and the second insulating layer, an anti-theft device is arranged in the first cavity, and a fire-proof device is arranged in the second cavity; the anti-theft device comprises a carbon fiber protection rib and an optical fiber, the optical fiber is electrically connected with an optical fiber length monitor, and the outer side wall of the second insulating layer is provided with a coating layer. The invention provides a high-low voltage power cable and coating equipment of a coating layer, wherein an anti-theft device and a fireproof device are respectively arranged in a first insulating layer and a second insulating layer, so that on one hand, the anti-theft device can timely discover and timely cope with theft, on the other hand, the anti-theft device can effectively prevent external fire, and can extinguish fire by impacting flame, thereby realizing the protection function.
Description
Technical Field
The invention relates to a cable, in particular to a high-low voltage power cable.
Background
With the increase of the electric load, the power supply system of the power distribution network gradually develops to a ring network type power supply mode. The transmission cable adopting the overhead process affects the city appearance, is easily affected by freezing disasters and is also easily polluted by electromagnetism. Therefore, in order to enhance the reliability and safety of power supply, as an important component of the urban ring network, the 10kV power distribution system for urban street lamp lighting is mostly buried in a pipe, a cable trench or a cable tunnel. For convenience of maintenance, the routing space of the cable trench is wide. This provides a riding opportunity for the criminal to steal and cut. In the case of theft of 10kV power cables, the benefits obtained by criminals through the theft of criminals are only hundreds of yuan and thousands of yuan, but the illegal gains of hundreds of thousands of yuan are paid by the state at huge cost;
the power cable can be structurally divided into a wire core and an protective layer (the protective layer refers to an insulating layer, a shielding layer and a protective layer), the wire core positioned on the innermost layer is used for transmitting electric energy, the protective layer wrapped outside the wire core has a multilayer structure, and the functions of shielding, insulating, external force damage prevention and the like are achieved respectively. At high voltage and above transmission and distribution networks, because the voltage is higher, stealing electrified cable often leads to the injures and deaths of thieves, consequently, the thief steals the power line now and is not washed the copper product of wire and come, has appeared that 10kV power cable inoxidizing coating was stolen the incident more in recent year. Because the cable laying is hidden and the monitoring and prevention system is not arranged, the cable protective layer is stolen, power failure and short-circuit accidents are not caused and are not easy to discover, but great potential safety hazards are left. After some cable protective layers are stolen, although power failure or casualty accidents do not happen temporarily, the insulation protection level of the cable is greatly reduced, short circuits are triggered by operation overvoltage, lightning overvoltage, harmonic overvoltage, personnel stepping and mouse biting, and a plurality of feeder circuits laid in the same ditch are often simultaneously short-circuited by short circuit explosion of a certain phase, so that large-area power failure is caused, and therefore, thieves have buried a plurality of serious potential safety hazards in an electric power system. Because the cable after many inoxidizing coatings are stolen is buried underground, the electric power department does not have the safe condition of special equipment monitoring cable so far, can't learn that the inoxidizing coating of power cable is destroyed, thereby can't take remedial measure in time, make the safety of electric power system and peripheral personnel and environment receive serious threat, and, the variety of the cable that has fire behavior that uses on the existing market is many, because the principle and the mechanical structure's of design difference, these cables that have fire behavior all have some self shortcomings, the price/performance ratio is not high, and can't guarantee the security when the cable uses completely.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides coating equipment for a high-low voltage power cable and a coating layer, wherein an anti-theft device and a fireproof device are respectively arranged in a first insulating layer and a second insulating layer, so that on one hand, the anti-theft action can be found and responded in time, on the other hand, the fire caused by the outside can be effectively prevented, and the flame can be impacted and extinguished, thereby realizing the protection function, extinguishing the fire source in time, preventing the fire from being seriously changed, better protecting the interior of the cable from being damaged in short time, and providing longer rescue time for constructors;
in order to solve the technical problems, the invention provides the following technical scheme:
the invention provides a high-low voltage power cable,
the anti-theft cable comprises a cable core, wherein a first insulating layer is arranged on the outer surface of the cable core, the cable core is wrapped in the first insulating layer, a second insulating layer is arranged on the outer surface of the first insulating layer, the first insulating layer is wrapped in the second insulating layer, a first cavity is formed between the first insulating layer and the cable core, a second cavity is formed between the first insulating layer and the second insulating layer, an anti-theft device is arranged in the first cavity, and a fireproof device is arranged in the second cavity;
the anti-theft device comprises a carbon fiber protection rib and optical fibers, wherein the optical fibers are wrapped in the carbon fiber protection rib, the length of the optical fibers is the same as that of the carbon fiber protection rib, the length of the carbon fiber protection rib is the same as that of the cable core, one side of the cable core is provided with a controller, the optical fibers are electrically connected with an optical fiber length monitor, the optical fiber length monitor is electrically connected with the controller, the output end of the controller is electrically connected with an alarm, the optical fiber length monitor comprises an optical fiber length detection module, an optical fiber length data processing module and a transmission module, the output end of the optical fiber length detection module is connected with the input end of the optical fiber length data processing module, and the output end of the optical fiber length data processing module is connected with the transmission module; the optical fiber length detection module is used for detecting the real-time length of the optical fiber in the fiber protection rib; the optical fiber length data processing module is used for judging whether the length of the optical fiber is normal or not according to the real-time length of the optical fiber in the fiber protection rib, the transmission module is used for transmitting data generated by the optical fiber length data processing module to the controller, the controller identifies the signal, when the optical fiber length in the carbon fiber protection rib is abnormal, the controller controls the alarm to give an alarm to remind an operator of timely processing, and the outer side wall of the second insulating layer is provided with a coating layer.
Preferably, the fire protection device comprises a shell and dry powder, the shell is in a circular tube shape with two closed ends, the dry powder is filled into the shell, explosive gas is filled in the shell, the component of the explosive gas is methane, and the shell is made of combustible materials.
Preferably, a protective layer is arranged on the outer surface of the first insulating layer, and the protective layer can prevent the cable core in the first insulating layer from being damaged by explosion of the fireproof assembly.
Preferably, the coating layer is provided as an epoxy coating.
The coating equipment for the coating layer is used for coating the coating layer on the outer surface of the second insulating layer and comprises a base box and a coating box, wherein the coating box is arranged on one side of the upper end of the base box, the base box is communicated with the joint of the coating box, the coating box sequentially comprises a purging bin, a cleaning bin, a coating bin and a drying bin from bottom to top, threading holes are formed in the joints among the purging bin, the cleaning bin, the coating bin and the drying bin, cables can conveniently pass through the threading holes, a sleeve is arranged in the purging bin and can be rotatably arranged in the purging bin, the sleeve is of an open structure with the upper end and the lower end, the cables are conveyed into the cleaning bin through the sleeve, a fan is arranged on the inner side wall of the sleeve, and can purge the surface of the cables, the cleanliness of the surface of the cable is improved, a first motor is arranged in the blowing bin, and the first motor can drive the blowing bin to rotate.
Preferably, be provided with in the cleaning bin and clean the case, clean the case and be the equal open structure of upper and lower extreme, it is provided with the brush head to clean the incasement side wall, the brush head sets up to two sets of, two sets of brush head symmetry sets up, and the cable passes through clean the case carry extremely in the coating storehouse, the brush head can clean the cable surface, further improves the cleanliness factor on cable surface.
Preferably, a coating pipe is arranged in the coating bin, the coating pipe can be rotatably arranged in the coating bin, the coating pipe is of an upper end and lower end opening structure, a cable is conveyed into the drying bin through the coating pipe, a coating nozzle is arranged in the coating pipe, the coating nozzle can coat a coating layer on the outer surface of the cable, a second motor is arranged in the coating bin, and the second motor drives the coating pipe to rotate.
Preferably, be provided with a stoving section of thick bamboo in the stoving storehouse, a stoving section of thick bamboo is the equal open structure of upper and lower extreme, and the cable passes through a stoving section of thick bamboo is carried extremely coating equipment is external, the inside wind channel of having seted up of a stoving section of thick bamboo, and the oblique top in wind channel link up has seted up the air outlet, and the air outlet runs through a stoving section of thick bamboo inner wall, an air-blower is installed to stoving section of thick bamboo one side, just air-blower output end through connection has the gas-supply pipe, and the gas-supply pipe passes through connecting pipe and wind channel through connection, the inboard fixed mounting of a stoving section of thick bamboo has the heating wire, the heating wire can be right the air that the air-blower was carried forward heats to the coating to the cable surface heats and dries.
Preferably, the base box is connected with a guide roller in a rotating mode, the surface of one end of the guide roller is located right below the threading hole, and the guide roller can convey the cable into the coating box through the base box.
Preferably, the air duct is provided with a plurality of air ducts from top to bottom in sequence, the cross section of each air duct is circular, and each air duct is of an annular structure.
The invention has the beneficial effects
(1) In the normal operation process of the cable, when a thief cuts or breaks due to external force, the optical fiber length detection module detects that the real-time length of the optical fiber in the fiber protection rib changes, the optical fiber length data processing module judges whether the length of the optical fiber is normal or not according to the change value of the real-time length of the optical fiber in the fiber protection rib, the transmission module is used for transmitting the data generated by the optical fiber length data processing module to the controller, the controller identifies the signal, and when the controller judges that the length of the optical fiber in the carbon fiber protection rib is abnormal, the controller controls the alarm to give an alarm so as to remind an operator to process the optical fiber in time. Therefore, the cable of the invention also effectively prevents thieves from stealing the power cable core.
(2) When the cable takes place to burn, the condition of a fire is earlier one step melted coating and second insulating layer and then is propagated to the shell surface, in this embodiment, the material of shell sets up to timber, timber has the flammability, the condition of a fire burning shell and then in stretching to the shell, because the shell intussuseption is filled with combustible gas, the dry powder, in this embodiment, combustible gas sets up to methane, methane meets the naked light and can explode, the shell explosion makes the dry powder distribute to the surrounding environment, thereby play the effect of putting out a fire, the effectual intensity of a fire that prevents the outside and cause of dry powder, and the inoxidizing coating can effectually play fire-retardant effect, the protective layer area has high temperature resistance, can protect the inside short time of cable can not receive destruction better, for providing longer rescue time for constructor.
Drawings
FIG. 1 is a sectional view of the structure of the present invention.
Fig. 2 is a schematic diagram of the operation of the optical fiber length monitor of the present invention.
Fig. 3 is a sectional view of the fire-proof device according to the present invention.
FIG. 4 is a schematic view of the coating apparatus of the present invention.
Fig. 5 is an enlarged view of the structure of the drying chamber of the present invention.
FIG. 6 is an enlarged view of the connecting pipe structure in the drying chamber according to the present invention.
Description of reference numerals: 1-a cable core, 2-a first insulating layer, 3-a second insulating layer, 4-a first cavity, 5-a second cavity, 6-a carbon fiber protective rib, 7-an optical fiber, 8-an optical fiber length monitor, 81-an optical fiber length detection module, 82-an optical fiber length data processing module, 83-a transmission module, 9-a controller, 10-an alarm, 11-a fire protection device, 12-a housing, 13-dry powder, 14-a coating layer, 15-a protective layer, 16-a base box, 17-a coating box, 18-a blowing bin, 19-a cleaning bin, 20-a coating bin, 21-a drying bin, 22-a casing pipe, 23-a fan, 24-a first motor, 25-a cleaning bin, 26-a brush head, 27-a coating pipe, 28-coating spray head, 29-second motor, 30-drying cylinder, 31-air duct, 32-air outlet, 33-air blower, 34-air pipe, 35-connecting pipe, 36-electric heating wire, 37-guide roller and 38-threading hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
As shown in fig. 1 to 6, the present invention provides a high and low voltage power cable,
the anti-theft cable comprises a cable core 1, wherein a first insulating layer 2 is arranged on the outer surface of the cable core 1, the cable core 1 is wrapped in the first insulating layer 2, a second insulating layer 3 is arranged on the outer surface of the first insulating layer 2, the first insulating layer 2 is wrapped in the second insulating layer 3, a first cavity 4 is formed between the first insulating layer 2 and the cable core 1, a second cavity 5 is formed between the first insulating layer 2 and the second insulating layer 3, an anti-theft device is arranged in the first cavity 4, and a fire-proof device 11 is arranged in the second cavity 5;
the anti-theft device comprises a carbon fiber protective rib 6 and an optical fiber 7, the optical fiber 7 is wrapped in the carbon fiber protective rib 6, the length of the optical fiber 7 is the same as that of the carbon fiber protective rib 6, the length of the carbon fiber protective rib 6 is the same as that of the cable core 1, a controller 9 is arranged on one side of the cable core 1, the optical fiber 7 is electrically connected with an optical fiber length monitor 8, the optical fiber length monitor 8 is electrically connected with the controller 9, the output end of the controller 9 is electrically connected with an alarm 10, the fiber length monitor 8 comprises a fiber length detection module 81, a fiber length data processing module 82 and a transmission module 83, the output end of the optical fiber length detection module 81 is connected with the input end of the optical fiber length data processing module 82, the output end of the optical fiber length data processing module 82 is connected with the transmission module 83; the optical fiber length detection module 81 is used for detecting the real-time length of the optical fiber 7 in the fiber protection rib; the optical fiber length data processing module 82 is used for judging whether the length of the optical fiber 7 is normal or not according to the real-time length of the optical fiber 7 in the fiber protection rib, the transmission module 83 is used for transmitting data generated by the optical fiber length data processing module 82 to the controller 9, the controller 9 identifies the signal, when the length of the optical fiber 7 in the carbon fiber protection rib 6 is abnormal, the controller 9 controls the alarm 10 to give an alarm to remind an operator of timely processing, the outer side wall of the second insulating layer 3 is provided with the coating layer 14, the coating layer 14 is arranged to be an epoxy coating,
the fire protection device 11 comprises a shell 12 and dry powder 13, wherein the shell 12 is in a shape of a circular tube with two closed ends, the dry powder 13 is filled into the shell 12, explosive gas is filled in the shell 12, the component of the explosive gas is methane, the shell 12 is made of combustible materials, a protective layer 15 is arranged on the outer surface of the first insulating layer 2, the protective layer 15 can prevent the cable core 1 in the first insulating layer 2 from being damaged by explosion of the fire protection component,
in the normal operation process of the cable, when a thief cuts or breaks due to external force, the optical fiber length detection module 81 detects that the real-time length of the optical fiber 7 in the fiber protection rib changes, the optical fiber length data processing module 82 judges whether the length of the optical fiber 7 is normal or not according to the change value of the real-time length of the optical fiber 7 in the fiber protection rib, the transmission module 83 is used for transmitting the data generated by the optical fiber length data processing module 82 to the controller 9, the controller 9 identifies the signal, and when the controller 9 judges that the length of the optical fiber 7 in the carbon fiber protection rib 6 is abnormal, the controller 9 controls the alarm 10 to alarm so as to remind an operator to process the signal in time. The carbon fiber protection rib 6 must be destroyed firstly, so that the cable also effectively prevents a thief from stealing the core of the power cable;
when the cable burns, the fire further melts the coating layer 14 and the second insulating layer 3 and further spreads to the surface of the shell 12, in this embodiment, the shell 12 is made of wood, the wood is flammable, the shell 12 is burned in the fire and further spreads to the shell 12, because the shell 12 is filled with flammable gas and dry powder 13, in this embodiment, the flammable gas is methane, the methane explodes when encountering open fire, the shell 12 explodes to disperse the dry powder 13 to the surrounding environment, so as to perform the function of extinguishing fire, the dry powder 13 effectively prevents the fire caused by the outside, the protective layer 15 can effectively perform the function of flame retardance, the protective layer 15 has high temperature resistance, can better protect the interior of the cable from being damaged in a short time, and provides a longer rescue time for constructors;
the coating equipment for the coating layer is used for coating the coating layer 14 on the outer surface of the second insulating layer 3, and comprises a base box 16 and a coating box 17, wherein the coating box 17 is arranged on one side of the upper end of the base box 16, the base box 16 is communicated with the joint of the coating box 17, the coating box 17 sequentially comprises a sweeping bin 18, a cleaning bin 19, a coating bin 20 and a drying bin 21 from bottom to top, threading holes 38 are formed in the joints among the sweeping bin 18, the cleaning bin 19, the coating bin 20 and the drying bin 21, cables can conveniently pass through the threading holes 38, a sleeve 22 is arranged in the sweeping bin 18, the sleeve 22 is rotatably arranged in the sweeping bin 18, the sleeve 22 is of an upper-lower-end-equal-opening structure, the cables are conveyed into the cleaning bin 19 through the sleeve 22, a fan 23 is arranged on the inner side wall of the sleeve 22, the blower 23 can sweep the surface of the cable to improve the cleanliness of the surface of the cable, a first motor 24 is arranged in the sweeping bin 18, and the first motor 24 can drive the sweeping bin 18 to rotate;
a cleaning box 25 is arranged in the cleaning bin 19, the cleaning box 25 is of a structure with openings at the upper end and the lower end, brush heads 26 are arranged on the inner side wall of the cleaning box 25, the brush heads 26 are arranged in two groups, the two groups of brush heads 26 are symmetrically arranged, cables are conveyed into the coating bin 20 through the cleaning box 25, the brush heads 26 can clean the surfaces of the cables, and the cleanliness of the surfaces of the cables is further improved;
a coating pipe 27 is arranged in the coating bin 20, the coating pipe 27 is rotatably arranged in the coating bin 20, the coating pipe 27 is of a structure with openings at the upper end and the lower end, a cable is conveyed into the drying bin 21 through the coating pipe 27, a coating nozzle 28 is arranged in the coating pipe 27, the coating nozzle 28 can coat a coating layer 14 on the outer surface of the cable, a second motor 29 is arranged in the coating bin 20, and the second motor 29 drives the coating pipe 27 to rotate;
a drying cylinder 30 is arranged in the drying bin 21, the drying cylinder 30 is of a structure with openings at the upper end and the lower end, a cable is conveyed to the outside of the coating equipment through the drying cylinder 30, an air duct 31 is arranged in the drying cylinder 30, an air outlet 32 is arranged above the air duct 31 in a penetrating way, the air outlet 32 penetrates through the inner wall of the drying cylinder 30, an air blower 33 is arranged on one side of the drying cylinder 30, the output end of the air blower 33 is connected with an air delivery pipe 34 in a penetrating way, the air pipe 34 is connected to the air duct 31 through a connecting pipe 35, an electric heating wire 36 is fixedly installed inside the drying cylinder 30, the electric heating wire 36 can heat the air supplied by the blower 33, therefore, the coating layer 14 on the surface of the cable is heated and dried, a plurality of air ducts 31 are sequentially arranged from top to bottom, the cross section of each air duct 31 is circular, and each air duct 31 is of an annular structure;
a guide roller 37 is rotatably connected inside the base box 16, one end surface of the guide roller 37 is positioned right below the threading hole 38, and the guide roller 37 can convey the cable into the coating box 17 through the base box 16;
when the cable is coated, the cable passes through the base box 16 and is conveyed into the coating box 17 through the guide roller 37 and the threading hole 38, when the cable is coated, the cable firstly passes through the purging bin 18, the blower 23 in the purging bin 18 can purge the surface of the cable, the sleeve 22 is driven by the first motor 24 to continuously rotate, so that the blower 23 uniformly purges the surface of the cable, purging dead corners are prevented from being generated, the cleanliness of the surface of the cable is firstly further improved, the cable is conveyed into the purging bin 19 through the sleeve 22, the brush head 26 in the purging bin 19 can clean the surface of the cable, the cleanliness of the surface of the cable is further improved, the cable is further conveyed into the coating bin 20 through the purging bin 25, the cable vertically passes through the coating bin 20, and the problem that the roundness of the coating layer 14 is not enough due to gravity influence on the sliding of the coating layer 14 when the cable is transversely coated is avoided, the roundness of the coated cable surface is higher, the coating quality is improved, the coating efficiency and the product competitiveness are improved, when the coating is carried out, the second motor 29 drives the coating pipe 27 to rotate, the coating nozzle 28 arranged in the coating pipe 27 is further driven to carry out rotary spraying, the coating is more uniform, 360-degree dead-angle-free coating is carried out, the phenomenon of non-uniform coating caused by fixed coating is reduced, the coating quality is further improved, the coating efficiency is improved, meanwhile, the coated cable is conveyed into the drying bin 21 through the coating pipe 27, the air blower 33 injects air flow into the air duct 31, the air flow flows along the air duct 31 and is sprayed out from the upward air outlet 32, when the air flow blows the heating wire 36, the upward hot air is blown to the coated cable, the upward annular hot air provides upward thrust, and the influence of gravity on the undried paint surface is resisted, therefore, the distance that the coating layer 14 slides downwards is remarkably reduced, meanwhile, the quick drying effect is achieved, the coating layer 14 is further prevented from sliding downwards, the finish is kept smooth and stable, and the coating efficiency is further improved.
Principle of operation
The invention relates to a high-low voltage power cable, the distribution of all parts is shown in figures 1-6, when in use,
in the normal operation process of the cable, when a thief cuts or breaks due to external force, the optical fiber length detection module 81 detects that the real-time length of the optical fiber 7 in the fiber protection rib changes, the optical fiber length data processing module 82 judges whether the length of the optical fiber 7 is normal or not according to the change value of the real-time length of the optical fiber 7 in the fiber protection rib, the transmission module 83 is used for transmitting the data generated by the optical fiber length data processing module 82 to the controller 9, the controller 9 identifies the signal, and when the controller 9 judges that the length of the optical fiber 7 in the carbon fiber protection rib 6 is abnormal, the controller 9 controls the alarm 10 to alarm so as to remind an operator to process the signal in time. The carbon fiber protection rib 6 must be destroyed firstly, so that the cable also effectively prevents a thief from stealing the core of the power cable;
when the cable burns, the fire further melts the coating layer 14 and the second insulating layer 3 and further spreads to the surface of the shell 12, in this embodiment, the shell 12 is made of wood, the wood is flammable, the shell 12 is burned in the fire and further spreads to the shell 12, because the shell 12 is filled with flammable gas and dry powder 13, in this embodiment, the flammable gas is methane, the methane explodes when encountering open fire, the shell 12 explodes to disperse the dry powder 13 to the surrounding environment, so as to perform the function of extinguishing fire, the dry powder 13 effectively prevents the fire caused by the outside, the protective layer 15 can effectively perform the function of flame retardance, the protective layer 15 has high temperature resistance, can better protect the interior of the cable from being damaged in a short time, and provides a longer rescue time for constructors;
when the cable is coated, the cable passes through the base box 16 and is conveyed into the coating box 17 through the guide roller 37 and the threading hole 38, when the cable is coated, the cable firstly passes through the purging bin 18, the blower in the purging bin 18 can purge the surface of the cable, the sleeve 22 is driven by the first motor 24 to continuously rotate, so that the blower uniformly purges the surface of the cable, purging dead corners are prevented from being generated, the cleanliness of the surface of the cable is firstly further improved, the cable is conveyed into the purging bin 19 through the sleeve 22, the brush head 26 in the purging bin 19 can clean the surface of the cable, the cleanliness of the surface of the cable is further improved, the cable is further conveyed into the coating bin 20 through the purging bin 25, the cable vertically passes through the coating bin 20, the problem that the roundness of the coating layer 14 is insufficient due to the influence of gravity on the sliding of the coating layer 14 when the coating layer is transversely coated is avoided, and the roundness of the surface of the coated cable is higher, the coating quality is improved, so that the coating efficiency and the product competitiveness are improved, when coating is carried out, the second motor 29 drives the coating pipe 27 to rotate, the coating spray head 28 arranged in the coating pipe 27 is driven to rotate for spraying, the coating is more uniform, 360-degree dead-angle-free coating is carried out, the phenomenon of uneven coating caused by fixed coating is reduced, the coating quality is further improved, the coating efficiency is improved, meanwhile, a coated cable is conveyed into the drying bin 21 through the coating pipe 27, the air blower 33 injects air flow into the air duct 31, the air flow flows along the air duct 31 and is sprayed out from the obliquely upward air outlet 32, when the air flow blows over the heating wire 36, the obliquely upward hot air is blown to the coated cable, the obliquely upward annular hot air provides upward thrust, the influence of gravity on the undried paint surface is resisted, and the downward sliding distance of the coating layer 14 is obviously reduced, meanwhile, the coating machine also has the function of quick drying, and further prevents the coating layer 14 from slipping down, so that the finish is kept smooth and stable, and the coating efficiency is further improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. A high-low voltage power cable is characterized in that,
the anti-theft cable comprises a cable core, wherein a first insulating layer is arranged on the outer surface of the cable core, the cable core is wrapped in the first insulating layer, a second insulating layer is arranged on the outer surface of the first insulating layer, the first insulating layer is wrapped in the second insulating layer, a first cavity is formed between the first insulating layer and the cable core, a second cavity is formed between the first insulating layer and the second insulating layer, an anti-theft device is arranged in the first cavity, and a fireproof device is arranged in the second cavity;
the anti-theft device comprises a carbon fiber protection rib and optical fibers, wherein the optical fibers are wrapped in the carbon fiber protection rib, the length of the optical fibers is the same as that of the carbon fiber protection rib, the length of the carbon fiber protection rib is the same as that of the cable core, one side of the cable core is provided with a controller, the optical fibers are electrically connected with an optical fiber length monitor, the optical fiber length monitor is electrically connected with the controller, the output end of the controller is electrically connected with an alarm, the optical fiber length monitor comprises an optical fiber length detection module, an optical fiber length data processing module and a transmission module, the output end of the optical fiber length detection module is connected with the input end of the optical fiber length data processing module, and the output end of the optical fiber length data processing module is connected with the transmission module; the optical fiber length detection module is used for detecting the real-time length of the optical fiber in the fiber protection rib; the optical fiber length data processing module is used for judging whether the length of the optical fiber is normal or not according to the real-time length of the optical fiber in the fiber protection rib, the transmission module is used for transmitting data generated by the optical fiber length data processing module to the controller, the controller identifies the signal, when the optical fiber length in the carbon fiber protection rib is abnormal, the controller controls the alarm to give an alarm to remind an operator of timely processing, and the outer side wall of the second insulating layer is provided with a coating layer.
2. A high-low voltage power cable according to claim 1,
the fire protection device comprises a shell and dry powder, wherein the shell is in a circular tube shape with two closed ends, the dry powder is filled into the shell, explosive gas is filled in the shell, the explosive gas is methane, and the shell is made of combustible materials.
3. A high-low voltage power cable according to claim 1,
the outer surface of the first insulating layer is provided with a protective layer, and the protective layer can prevent the cable core in the first insulating layer from being damaged due to explosion of the fireproof assembly.
4. A high-low voltage power cable according to claim 1,
the coating layer is provided as an epoxy coating.
5. A coating apparatus for a coating layer, characterized in that,
the coating equipment is used for coating the coating layer on the outer surface of the second insulating layer and comprises a base box and a coating box, the coating box is arranged on one side of the upper end of the base box, the joint of the base box and the coating box is communicated, a sweeping bin, a cleaning bin, a coating bin and a drying bin are sequentially arranged in the coating box from bottom to top, threading holes are formed in the joints among the sweeping bin, the cleaning bin, the coating bin and the drying bin and are convenient for cables to sequentially pass through, a sleeve is arranged in the sweeping bin and can be rotatably arranged in the sweeping bin, the sleeve is of an upper end and lower end opening structure, the cables are conveyed into the cleaning bin through the sleeve, a fan is arranged on the inner side wall of the sleeve and can sweep the surface of the cables, so that the cleanliness of the surface of the cables is improved, a first motor is arranged in the blowing bin and can drive the blowing bin to rotate.
6. The coating apparatus of one coating layer according to claim 5,
cleaning the storehouse and being provided with the cleaning box, cleaning the equal open structure of case for last lower extreme, cleaning the incasement side wall and being provided with the brush head, the brush head sets up to two sets of, two sets of brush head symmetry sets up, and the cable passes through cleaning the case and carry extremely in the coating storehouse, the brush head can clean the cable surface, further improves the cleanliness factor on cable surface.
7. The coating apparatus of one coating layer according to claim 6,
the coating device is characterized in that a coating pipe is arranged in the coating bin, the coating pipe can be rotatably arranged in the coating bin, the coating pipe is of an upper end and lower end opening structure, a cable is conveyed to the drying bin through the coating pipe, a coating nozzle is arranged in the coating pipe, the coating nozzle can coat a coating layer on the outer surface of the cable, a second motor is arranged in the coating bin, and the second motor drives the coating pipe to rotate.
8. The coating apparatus of one coating layer according to claim 7,
be provided with a stoving section of thick bamboo in the stoving storehouse, a stoving section of thick bamboo is the equal open structure of upper and lower extreme, and the cable passes through a stoving section of thick bamboo is carried extremely coating equipment is external, the inside wind channel of having seted up of a stoving section of thick bamboo, and the wind channel is link up to one side and has seted up the air outlet, and the air outlet runs through a stoving section of thick bamboo inner wall, an air-blower is installed to stoving section of thick bamboo one side, just air-blower output end through connection has the gas-supply pipe, and the gas-supply pipe passes through connecting pipe and wind channel through connection, the inboard fixed mounting of a stoving section of thick bamboo has the heating wire, the heating wire can be right the air that the air-blower was carried forward heats to the coating to cable surface heats stoving.
9. The coating apparatus of one coating layer according to claim 5,
the inside guide roll that is connected with of base case rotates, and guide roll one end surface is located under the through wires hole, the guide roll can be with the cable warp the base case is carried extremely in the coating incasement.
10. The coating apparatus of one coating layer according to claim 8,
the wind channel has set gradually a plurality ofly from last to down, and the wind channel cross section is circular, and the wind channel is ring structure.
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Application publication date: 20210827 |