CN114822951A - Waterproof insulated wire and cable and preparation method thereof - Google Patents
Waterproof insulated wire and cable and preparation method thereof Download PDFInfo
- Publication number
- CN114822951A CN114822951A CN202210639033.5A CN202210639033A CN114822951A CN 114822951 A CN114822951 A CN 114822951A CN 202210639033 A CN202210639033 A CN 202210639033A CN 114822951 A CN114822951 A CN 114822951A
- Authority
- CN
- China
- Prior art keywords
- layer
- outer side
- wrapping
- modified asphalt
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002360 preparation method Methods 0.000 title description 2
- 239000010410 layer Substances 0.000 claims abstract description 166
- 239000010426 asphalt Substances 0.000 claims abstract description 53
- 239000012791 sliding layer Substances 0.000 claims abstract description 39
- 239000011247 coating layer Substances 0.000 claims abstract description 35
- 229920000271 Kevlar® Polymers 0.000 claims abstract description 32
- 239000004761 kevlar Substances 0.000 claims abstract description 32
- 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 28
- 239000003063 flame retardant Substances 0.000 claims abstract description 28
- 238000009941 weaving Methods 0.000 claims abstract description 21
- 238000001125 extrusion Methods 0.000 claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims description 33
- 238000004519 manufacturing process Methods 0.000 claims description 27
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 238000011049 filling Methods 0.000 claims description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052802 copper Inorganic materials 0.000 abstract description 10
- 239000010949 copper Substances 0.000 abstract description 10
- 238000009413 insulation Methods 0.000 abstract description 7
- 230000001360 synchronised effect Effects 0.000 abstract description 4
- 238000005253 cladding Methods 0.000 description 12
- 238000005065 mining Methods 0.000 description 10
- 239000005030 aluminium foil Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 6
- 239000004809 Teflon Substances 0.000 description 4
- 229920006362 Teflon® Polymers 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 229920000915 polyvinyl chloride Polymers 0.000 description 4
- 239000004800 polyvinyl chloride Substances 0.000 description 4
- 239000004703 cross-linked polyethylene Substances 0.000 description 3
- 229920003020 cross-linked polyethylene Polymers 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
-
- 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
-
- 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
-
- 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
Landscapes
- Insulated Conductors (AREA)
Abstract
The invention relates to the technical field of wires and cables, in particular to a waterproof insulated wire and cable, which comprises: the flame-retardant cable comprises three power conductive units, a control conductive unit and a flame-retardant wrapping layer, wherein a modified asphalt layer for covering a cross section is extruded and wrapped on the outer side of the flame-retardant wrapping layer, a coating layer for wrapping the modified asphalt layer is woven on the outer side wall of the modified asphalt layer, and a sliding layer is wrapped on the outer side of the coating layer; when the cable receives the too big extrusion force that sharp object caused, power sinle silk and the control sinle silk of copper can break off, when the cable received the impact force sunken, receive the synchronous inwards caving in of kevlar weaving layer of impact force one side, wrap up SBS modified asphalt, make the high SBS modified asphalt of thick form take place deformation, and under the effect of extrusion force, flow and carry out the shutoff to the section of power sinle silk and control sinle silk, play the effect of keeping apart waterproof insulation, prevent the phenomenon of electric leakage, the security is higher.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a waterproof insulated wire cable.
Background
The rubber sleeve waterproof insulated cable is widely applied to various electrical equipment, such as mobile power lines of daily electric appliances, electric machinery, electric devices and appliances, can be used under indoor or outdoor environmental conditions, is a special mining waterproof insulated wire cable, is suitable for various mobile electrical equipment and mining machinery in mines, has good flexibility, can cope with large-range movement and shaking of the mechanical equipment, and can be used under severe environments, such as severe underground humidity environments and gas environments.
The existing mining rubber sleeve cable is characterized in that rubber sheaths made of different materials are adopted to insulate and protect cable cores in order to ensure the flexibility of the existing mining rubber sleeve cable, the mining field environment is complex, particularly when the mining rubber sleeve cable is used in an underground coal mine, the using environment light is poor, the space is narrow, the water seepage environment in the mine is severe, and large mining equipment easily collides or rolls the cable to cause cable fracture, the cable fracture is leaked electricity, personnel cannot find the cable fracture in time, the cable is dangerous to get an electric shock, the gas content in the underground coal mine is high, and when the cable fractures, sparks can be generated at the fracture, so that the mining rubber sleeve cable is very dangerous.
Disclosure of Invention
The present invention aims to overcome the defects of the prior art and provides a waterproof insulated wire cable, which comprises:
three power conducting units;
the three power conductive units and the one control conductive unit are arranged in a tangent mode;
the three power conductive units and the one control conductive unit are tangent in pairs and are coated by the flame-retardant wrapping layer;
the flame-retardant wrapping layer is characterized in that a modified asphalt layer for covering a cross section is extruded and wrapped on the outer side of the flame-retardant wrapping layer, a coating layer for wrapping the modified asphalt layer is woven on the outer side wall of the modified asphalt layer, a sliding layer is wrapped on the outer side of the coating layer, and an outer sheath for protection is wrapped on the outer side wall of the sliding layer;
the coating layer is arranged to wrap the modified asphalt layer and can extrude the modified asphalt layer to flow to fill the space in the coating layer when the coating layer deforms under pressure.
Preferably, a filling strip for heat conduction is filled between the outer wall of the power conductive unit, the outer wall of the control conductive unit and the inner wall of the power conductive unit.
Preferably, the coating layer is a Kevlar braided layer.
Preferably, the sliding layer is a polytetrafluoroethylene film layer, and the sliding layer is extruded on the outer side wall of the coating layer.
Preferably, the sliding layer is an aluminum foil layer, and the sliding layer is wrapped on the outer side wall of the wrapping layer.
Preferably, the overlapping rate of the sliding layer is 25% -35%.
Preferably, the three power conductive units and the control conductive unit are provided with a monitoring wire core for monitoring at the outer side of the tangent position, and the outer side wall of the monitoring wire core is extruded with a monitoring wire core insulating layer.
Preferably, the power conductive unit comprises a power wire core, an inner shielding layer, a power wire core insulating layer, an outer shielding layer and a metal shielding layer which are arranged from inside to outside in sequence.
Preferably, the control conductive unit includes the control sinle silk of three arrangement and the cladding is at the control sinle silk insulating layer in its outside, three the control sinle silk insulating layer is tangent to be arranged, and three tangent arranging the cladding of control sinle silk insulating layer outside has the strap shielding layer, the lateral wall cladding of strap shielding layer has the inner sheath.
The processing technology of the waterproof insulated wire and cable comprises the following steps:
step 1, manufacturing a power conductive unit, extruding and wrapping the power wire core by an extruder to form three co-extrusion layers, namely an inner shielding layer, a power wire core insulating layer and an outer shielding layer from inside to outside, and then weaving the outer shielding layer by a weaving machine to form a metal shielding layer;
and 8, manufacturing the outer sheath, and extruding and wrapping the outer side of the sliding layer by adopting an extruder to form the outer sheath.
Compared with the prior art, the invention has the advantages that:
when the cable receives the too big extrusion force that sharp object caused, cable pressurized position is sunken to inside, when deformation volume is great, fracture can take place for copper's power sinle silk and control core, when the cable receives the impact force sunken, receive synchronous inside caving in of kevlar weaving layer of impact force one side, wrap up SBS modified asphalt, make the SBS modified asphalt of high thick form take place deformation, infiltration sunken fracture department, make the both sides of kevlar weaving layer all wrap up SBS modified asphalt, and under the extrusion force effect, flow and carry out the shutoff to the section of power sinle silk and control core, play the effect of keeping apart waterproof insulation, prevent the phenomenon of electric leakage, the security is higher.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the presently disclosed subject matter.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of a waterproof insulated wire cable according to the present invention;
FIG. 2 is an enlarged view of the point A in FIG. 1;
FIG. 3 is a schematic view of the construction of the power conducting unit of the waterproof insulated wire cable according to the present invention;
fig. 4 is a schematic view showing a structure of a control conductive unit of the waterproof insulated wire cable according to the present invention;
fig. 5 is a schematic view showing the deformation of the waterproof insulated wire and cable according to the present invention.
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.
Because waterproof insulation wire and cable uses in the underground coal mine, its service environment light is relatively poor, the space is comparatively narrow, large-scale mining equipment causes the collision easily to the cable or rolls, lead to the cable fracture, the electric leakage takes place for the cable fracture department, if personnel can't in time discover, there is the danger of electric shock, and gas content is higher in the underground coal mine, when the cable fracture, fracture department can produce the spark, comparatively dangerous, consequently, need a waterproof insulation wire and cable urgently, when mining equipment rolls it and causes the fracture, seal the cable core section simultaneously, prevent that cable fracture department from taking place the electric leakage phenomenon.
Referring to fig. 1, 3 and 4, the present invention provides a waterproof insulated wire and cable, especially a waterproof insulated wire and cable suitable for use in severe environments such as under mines, which includes a power conductive unit 1, a control conductive unit 2 and a flame retardant wrapping layer 3.
The power conductive unit 1 comprises a power wire core 11, an inner shielding layer 12, a power wire core insulating layer 13, an outer shielding layer 14 and a metal shielding layer 15 which are sequentially arranged from inside to outside.
In optional embodiment, power sinle silk 11 is that a plurality of strands of copper wire transposition each other forms, internal shield layer 12 and outer shielding layer 14 are the semiconductor nylon material, play the effect to power sinle silk 11 electromagnetic shield, power sinle silk insulating layer 13 is the insulating material of XLPE, it has splendid electric property, insulating nature is better, can effectually insulate isolation to power sinle silk 11, metal shielding layer 15 is made for the metal shielding net that the copper wire was woven, when it played the shielding effect, flexibility is better, can not cause the influence to the flexibility of cable.
Further, the control conductive unit 2 includes three control core 21 of arranging and the cladding is at the control core insulating layer 22 in its outside, and three control core insulating layer 22 is tangent to be arranged, and the cladding of the control core insulating layer 22 outside that three tangent arranged has metal tape shielding layer 23, and the cladding of the lateral wall of metal tape shielding layer 23 has inner sheath 24.
In an optional embodiment, the control wire core 21 is formed by mutually twisting a plurality of strands of copper wires, the control wire core insulating layer 22 is made of XLPE insulating material, and has excellent electrical performance and good insulating property, the metal belt shielding layer 23 is made of copper belts in a wrapping mode, so that good electromagnetic shielding is performed on the control wire core 21, normal transmission of control circuit electrical signals is guaranteed, and the inner sheath 24 is made of chloroprene rubber in an extruding mode, so that the control wire core 21 is protected.
Further, the three power conductive units 1 and the one control conductive unit 2 are coated with the flame-retardant wrapping layer 3 in a pairwise tangent manner.
In an optional embodiment, the flame-retardant wrapping layer 3 can be wrapped by a mica tape, and the flame-retardant effect is good.
With reference to fig. 1, the modified asphalt layer 4 for covering the cross section is extruded and wrapped on the outer side of the flame-retardant wrapping layer 3, and the coating layer 5 for wrapping the modified asphalt layer 4 is woven on the outer side wall of the modified asphalt layer 4.
In an optional embodiment, the modified asphalt layer 4 is made of flame-retardant SBS modified asphalt through extrusion, is highly viscous, is easy to deform under stress, has good high-temperature resistance and low-temperature resistance, good elasticity and toughness and strong bonding force, and has good insulating property, and the coating layer 5 is a Kevlar braid layer and is made of Kevlar braid, so that the high-temperature-resistant modified asphalt layer is high in strength, good in toughness and high-temperature-resistant.
So, when the cable received the too big extrusion force that sharp object caused, the cable pressurized position was sunken to inside, because the power sinle silk 11 and the control sinle silk 21 elastic deformation ability of copper are relatively poor, when the deformation volume is great, the power sinle silk 11 and the control sinle silk 21 of copper can break off, and the Kevlar weaving layer has good intensity and toughness, can not take place to break off, and modified asphalt layer 4 is highly viscous form, can not take place the section of splitting.
Particularly, when the cable is sunken under the impact force, the Kevlar braid layer on one side of the cable subjected to the impact force is synchronously sunken inwards, and when the Kevlar is sunken, the Kevlar wraps and draws SBS modified asphalt fused with the Kevlar braid layer, so that the SBS modified asphalt in a highly viscous state is deformed and is filled in the sections of the power wire core 11 and the control wire core 21 for plugging, the waterproof and insulating isolation effect is achieved, the electric leakage phenomenon is prevented, and the safety is high.
In a preferred embodiment, the Kevlar braided layer has a braided gap, preferably, the braiding density of the Kevlar braided layer is 70-85%, the bonding capability of the surface of the Kevlar braided layer and the modified asphalt layer 4 can be improved, so that the high-viscosity SBS modified asphalt adhered to the surface of the Kevlar braided layer can be effectively moved when the Kevlar braided layer deforms and displaces, and the SBS modified asphalt is prevented from moving axially away from an extrusion part after the SBS modified asphalt is extruded on a cable, so that the filling amount of a conductor fracture part is small.
Specifically, the modified asphalt layer 4 is filled in the weaving gap, so that the Kevlar braid layer and the SBS modified asphalt are mutually fused, and the Kevlar braid layer can penetrate through the Kevlar braid layer and be filled in the gaps on the two sides of the Kevlar braid layer at the pressed part, so that the insulation and waterproof effects are improved.
Further, the outside of the coating layer 5 is coated with a sliding layer 6.
The outer side wall of the sliding layer 6 is covered with an outer sheath 7 for protection.
In an alternative embodiment, the sliding layer 6 is a teflon film layer, and the sliding layer 6 is extruded on the outer side wall of the covering layer 5.
Because the polytetrafluoroethylene film coefficient of friction is extremely low, when receiving external impact force, the cable takes place sunken, cladding 5 and oversheath 7 are synchronous inwards sunken, because oversheath 7 is located the cladding 5 outside, and the deformability of different materials is different, consequently, the deformation volume when oversheath 7 and cladding 5 are sunken is different, cladding 5 and oversheath 7 take place the relative slip along deformation direction, the polytetrafluoroethylene film that is located between cladding 5 and the oversheath 7 plays lubricated effect, prevent to produce too big frictional force and the oversheath 7 fracture that leads to because of between oversheath 7 and the cladding 5.
In optional embodiment, sliding layer 6 is the aluminium foil layer, and sliding layer 6 wraps at the lateral wall of coating 5 around, and the aluminium foil layer has good electromagnetic shield effect when playing certain isolation lubrication effect around the sliding layer 6 of package, guarantees the stability of the inside electromagnetic environment of cable.
In an optional embodiment, the sliding layer 6 is a thin aluminum foil layer, the overlapping rate of the sliding layer 6 is 25% -35%, and when the cable is bent, the aluminum foils can still overlap with each other, so that the shielding effect is ensured.
Furthermore, the outer sheath 7 is made of polyvinyl chloride, has good electrical insulation performance, is not easy to be corroded by acid and alkali, can effectively block the corrosion action of the external environment, and ensures the safe and normal operation of the cable.
Further, filling bars 8 for heat conduction are filled between the outer walls of the power conductive unit 1 and the control conductive unit 2 and between the inner walls of the power conductive unit 1.
In an optional embodiment, the filling strips 8 are made of heat-conducting silicone rubber, have good heat-conducting performance, and can conduct heat generated by the power conductive unit 1 and the control conductive unit 2 to the modified asphalt layer 4 while playing a role of filling gaps, so that the modified asphalt layer 4 is always in a viscous state.
Furthermore, the outer sides of the tangent positions of the three power conductive units 1 and the control conductive unit 2 are respectively provided with a monitoring wire core 9 for monitoring, and the outer side wall of the monitoring wire core 9 is wrapped with a monitoring wire core insulating layer 91 in an extruding manner.
In an optional embodiment, the monitoring wire core 9 is a single-stranded copper core wire, and the monitoring wire core insulating layer 91 is made of flame-retardant PVC, so that the insulating effect is good.
Therefore, when the cable core is broken, the cable shielding layer is broken, the electromagnetic field at the broken part is changed, and when the monitoring wire core 9 detects that the electromagnetic field is changed, the remote control equipment breaks the circuit to prevent electric leakage.
The invention provides another technical scheme, and the processing technology of the waterproof insulated wire and cable comprises the following steps:
step 1, manufacturing a power conductive unit 1:
1-1) extruding and wrapping the outer side of the power wire core 11 by using an extruder to form three co-extrusion layers, namely an inner shielding layer 12, a power wire core insulating layer 13 and an outer shielding layer 14 from inside to outside;
1-2) using a knitting machine and adopting copper wires with the diameter of 0.2mm to knit a metal net on the outer side of the outer shielding layer 14, and finally forming the metal shielding layer 15.
2-1) extruding the XLPE insulating material outside the control wire core 21 by using an extruder to form a control wire core insulating layer 22;
2-2) twisting the three control wire cores 21 extruded with the control wire core insulating layers 22 together by using a wire twisting machine, and then wrapping a copper strip on the outer sides of the control wire cores 21 twisted together by using a winding machine to form a metal strip shielding layer 23;
2-3) finally, extruding the chloroprene rubber outside the metal band shielding layer 23 by using an extruder to form an inner sheath 24.
the flame retardant PVC is extruded outside the monitoring core 9 using an extruder to form a monitoring core insulation layer 91.
4-1) twisting one control conductive unit 2, three power conductive units 1 and four monitoring wires 9 together by using a wire twisting machine, so that the control conductive unit 2 and the three power conductive units 1 are arranged in a tangent manner in pairs, and the four monitoring wires 9 are respectively positioned at the outer sides of the tangent positions of the control conductive unit 2 and the three power conductive units 1;
4-2) lapping one control conductive unit 2 and three power conductive units 1 which are mutually twisted by a mica tape by using a lapping machine to form a flame-retardant lapping layer 3;
4-3) embedding a filling strip 8 made of heat-conducting silicon rubber material in gaps among the flame-retardant wrapping layer 3, the control conductive unit 2, the power conductive unit 1 and the monitoring lead 9.
the SBS modified asphalt is extruded outside the flame-retardant wrapping layer 3 by using an extruder to form a modified asphalt layer 4, the extrusion thickness is 5mm, the extruded modified asphalt layer is highly viscous, does not flow in a normal state and is easy to deform under a stress state.
and weaving Kevlar fibers on the outer side of the modified asphalt layer 4 by using a weaving machine to form a coating layer 5, wherein the weaving thickness is 1mm, and the weaving rate is 80%.
when sliding layer 6 adopted the polytetrafluoroethylene material, used the extruder to crowd the package in the 5 outsides of coating with polytetrafluoroethylene, when sliding layer 6 adopted the aluminium foil material, used around the book machine with the aluminium foil around the package in the 5 outsides of coating, and the aluminium foil is 25% -35% around taking the lid rate of package.
an extruder is used for extruding polyvinyl chloride to wrap the outer side of the sliding layer 6 to form the outer sheath 7.
Synthesize above embodiment, when the cable received the too big extrusion force that sharp object caused, the cable pressurized position is sunken to inside, because power sinle silk 11 and the control sinle silk 21 elastic deformation ability of copper are relatively poor, when the deformation volume is great, power sinle silk 11 and the control sinle silk 21 of copper can break off, and the kevlar weaving layer has good intensity and toughness, can not break off, modified asphalt layer 4 is highly viscous form, can not take place the section of split, when the cable received the impact force sunken, receive the synchronous inwards sunken of kevlar weaving layer of impact force one side.
Because the Kevlar braid layer has a weaving gap, the surface friction force of the Kevlar braid layer is large, viscous fluid SBS modified asphalt can be filled into the weaving gap, the Kevlar braid layer and the SBS modified asphalt are mutually fused, when the Kevlar is sunken, the SBS modified asphalt fused with the Kevlar braid layer is further wrapped and drawn, so that the highly viscous SBS modified asphalt is deformed, the SBS modified asphalt is wrapped on two sides of the Kevlar braid layer deep into the sunken fracture part (as shown in figure 5), and the Kevlar braid layer flows to the power wire core 11 and the section of the control wire core 21 to be plugged under the action of extrusion force, so that the Kevlar braid layer has the effects of isolating, water proofing and insulation, the phenomenon of electric leakage is prevented, and the safety is high.
In an optional embodiment, as mentioned above, the sliding layer 6 is a teflon film layer, the sliding layer 6 is wrapped on the outer side wall of the coating layer 5 in an extruding manner, the friction coefficient of the teflon film is extremely low, when external impact force is applied, the cable is sunken, the coating layer 5 and the outer sheath 7 are synchronously sunken inwards, because the outer sheath 7 is positioned on the outer side of the coating layer 5, and the deformation performance of different materials is different, therefore, the deformation amount of the outer sheath 7 and the deformation amount of the coating layer 5 are different, the coating layer 5 and the outer sheath 7 slide relatively along the deformation direction, the teflon film positioned between the coating layer 5 and the outer sheath 7 plays a role in lubrication, and the outer sheath 7 is prevented from being broken due to the excessive friction force generated between the outer sheath 7 and the coating layer 5.
In other embodiments, sliding layer 6 is the aluminium foil layer, and sliding layer 6 winds the package at the lateral wall of coating 5, and the aluminium foil layer has good electromagnetic shield effect when playing certain isolation lubrication effect around the sliding layer 6 of package, guarantees the stability of the inside electromagnetic environment of cable.
Through detection, the cable product prepared by the invention has the beneficial characteristics that:
1) shear resistance
The product is detected, the shearing knife with the thickness of 1mm and the length larger than the integral diameter of the cable is adopted in the radial direction of the cable to impact the cable, and the coating layer of the cable is not obviously broken under the impact of 100J energy.
2) Flame retardant properties
The product is detected, and the finished cable passes through a combustion experiment of the cable of GB/T18380-2008 under the flame condition.
3) Smoke density performance
The product is detected, and the actually measured cable passes the smoke density test of GB/T17651-2008.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (10)
1. A waterproof insulated wire cable characterized by comprising:
three power conducting units;
the three power conductive units and the one control conductive unit are arranged in a tangent mode;
the three power conductive units and the one control conductive unit are tangent in pairs and are coated by the flame-retardant wrapping layer;
the outer side of the flame-retardant wrapping layer is wrapped with a modified asphalt layer for covering a cross section in an extruding manner, and the outer side wall of the modified asphalt layer is woven with a coating layer for wrapping the modified asphalt layer; the modified asphalt layer is highly viscous;
the outer side of the coating layer is coated with a sliding layer;
the outer side wall of the sliding layer is coated with an outer sheath for protection;
the coating layer is arranged to wrap the modified asphalt layer and can extrude the modified asphalt layer to flow to fill the space in the coating layer when the coating layer deforms under pressure.
2. The waterproof insulated wire cable according to claim 1, wherein a filler strip for heat conduction is filled between the outer wall of the power conductive unit, the control conductive unit and the inner wall of the power conductive unit.
3. The waterproof insulated electric wire and cable according to claim 1, wherein the coating layer is a kevlar braid.
4. The waterproof insulated wire and cable according to claim 1, wherein the sliding layer is a polytetrafluoroethylene film layer, and the sliding layer is extruded on the outer side wall of the coating layer.
5. The waterproof insulated wire and cable according to claim 1, wherein the sliding layer is an aluminum foil layer, and the sliding layer wraps around the outer side wall of the covering layer.
6. The waterproof insulated wire and cable according to claim 5, wherein the overlapping rate of the sliding layer is 25% to 35%.
7. The waterproof insulated wire cable according to claim 1, wherein a monitoring core for monitoring is provided on the outer side of the tangent position of each of the three power conductive units and the control conductive unit, and an insulating layer of the monitoring core is extruded on the outer side wall of the monitoring core.
8. The waterproof insulated wire cable according to any one of claims 1 to 7, wherein the power conducting unit comprises a power wire core, an inner shielding layer, a power wire core insulating layer, an outer shielding layer and a metal shielding layer, which are arranged in sequence from inside to outside.
9. The waterproof insulated wire cable according to any one of claims 1 to 7, wherein the control conductive unit comprises three control wire cores and a control wire core insulating layer coated on the outer side of the control wire cores, the three control wire core insulating layers are arranged in a tangent manner, a metal tape shielding layer is coated on the outer side of the three control wire core insulating layers in a tangent manner, and an inner sheath is coated on the outer side wall of the metal tape shielding layer.
10. The process for manufacturing a waterproof insulated wire and cable according to any one of claims 1 to 9, comprising the steps of:
step 1, manufacturing a power conductive unit, extruding and wrapping the power wire core by an extruder to form three co-extrusion layers, namely an inner shielding layer, a power wire core insulating layer and an outer shielding layer from inside to outside, and then weaving the outer shielding layer by a weaving machine to form a metal shielding layer;
step 2, manufacturing a control conductive unit, extruding and wrapping the control wire core outside to form a control wire core insulating layer by adopting an extruder, then wrapping and forming a metal belt shielding layer outside the control wire core insulating layer by adopting a winding machine, and finally extruding and wrapping the metal belt shielding layer outside to form an inner sheath by using the extruder;
step 3, manufacturing a monitoring lead, and extruding and wrapping the outer side of the monitoring wire core by using an extruder to form a monitoring wire core insulating layer;
step 4, manufacturing a cable core, mutually twisting and wrapping a control conductive unit, three power conductive units and four monitoring wires together by using a flame-retardant wrapping tape through a wrapping machine, forming a flame-retardant wrapping layer on the outer side, enabling the control conductive unit and the three power conductive units to be arranged in a pairwise tangent mode, enabling the four monitoring wires to be respectively positioned on the outer side of the tangent positions of the control conductive unit and the three power conductive units, and then embedding filling strips into gaps among the flame-retardant wrapping layer, the control conductive unit, the power conductive units and the monitoring wires;
step 5, manufacturing a modified asphalt layer, and extruding and wrapping the outer side of the flame-retardant wrapping layer by using an extruder to form the modified asphalt layer;
step 6, manufacturing a coating layer, and weaving the modified asphalt layer at the outer side by using a weaving machine to form the coating layer;
step 7, manufacturing a sliding layer, namely manufacturing the sliding layer on the outer side of the coating layer by adopting an extruder or a winding machine;
and 8, manufacturing the outer sheath, and extruding and wrapping the outer side of the sliding layer by adopting an extruder to form the outer sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210639033.5A CN114822951B (en) | 2022-06-07 | 2022-06-07 | Waterproof insulated wire and cable and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210639033.5A CN114822951B (en) | 2022-06-07 | 2022-06-07 | Waterproof insulated wire and cable and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114822951A true CN114822951A (en) | 2022-07-29 |
| CN114822951B CN114822951B (en) | 2024-01-23 |
Family
ID=82520913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210639033.5A Active CN114822951B (en) | 2022-06-07 | 2022-06-07 | Waterproof insulated wire and cable and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114822951B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360618A (en) * | 2011-11-04 | 2012-02-22 | 安徽新亚特电缆集团有限公司 | Submarine power cable and method for manufacturing submarine power cable |
| CN204760123U (en) * | 2015-07-03 | 2015-11-11 | 宝胜科技创新股份有限公司 | High electrical safety nature, high anticorrosive, waterproof, water -resistant tree type middling pressure power cable |
| CN205016269U (en) * | 2015-10-26 | 2016-02-03 | 山东华凌电缆有限公司 | High strength long -life coal -winning machine flexible cable |
| CN105427932A (en) * | 2015-11-18 | 2016-03-23 | 无锡市明珠电缆有限公司 | Halogen-free low-smoke and flame-retardant metallic shield monitoring type rubber jacketed flexible cable and production method therefor |
| CN106910555A (en) * | 2017-04-10 | 2017-06-30 | 安徽凌宇电缆科技有限公司 | New-energy automobile charging pile cable |
| CN110993164A (en) * | 2019-12-09 | 2020-04-10 | 安徽太平洋电缆股份有限公司 | Multifunctional mobile flexible cable and preparation method thereof |
-
2022
- 2022-06-07 CN CN202210639033.5A patent/CN114822951B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360618A (en) * | 2011-11-04 | 2012-02-22 | 安徽新亚特电缆集团有限公司 | Submarine power cable and method for manufacturing submarine power cable |
| CN204760123U (en) * | 2015-07-03 | 2015-11-11 | 宝胜科技创新股份有限公司 | High electrical safety nature, high anticorrosive, waterproof, water -resistant tree type middling pressure power cable |
| CN205016269U (en) * | 2015-10-26 | 2016-02-03 | 山东华凌电缆有限公司 | High strength long -life coal -winning machine flexible cable |
| CN105427932A (en) * | 2015-11-18 | 2016-03-23 | 无锡市明珠电缆有限公司 | Halogen-free low-smoke and flame-retardant metallic shield monitoring type rubber jacketed flexible cable and production method therefor |
| CN106910555A (en) * | 2017-04-10 | 2017-06-30 | 安徽凌宇电缆科技有限公司 | New-energy automobile charging pile cable |
| CN110993164A (en) * | 2019-12-09 | 2020-04-10 | 安徽太平洋电缆股份有限公司 | Multifunctional mobile flexible cable and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114822951B (en) | 2024-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203276947U (en) | Environmentally friendly low-smoke halogen-free flame-retardant fireproof medium-voltage power cable | |
| RU109318U1 (en) | MOUNTING CABLE, PREVIOUSLY EXPLOSION AND FIRE SAFETY, INCLUDING FOR EXTREMELY SAFE CHAINS (OPTIONS) | |
| CN202549409U (en) | High-temperature resistant computer shielding cable | |
| CN103177812A (en) | Environment-friendly medium-voltage fireproof cable | |
| CN201369187Y (en) | Control cable for nuclear power station | |
| CN202584880U (en) | Polyvinyl chloride insulation and sheathed thin steel wire armored fireproof power cable | |
| CN104200918A (en) | FF (foundation fieldbus) cable for communication system | |
| RU2573572C2 (en) | High-frequency symmetrical fire-resistant sealed cable | |
| CN217361195U (en) | Waterproof insulated wire and cable | |
| CN202134273U (en) | Flame-retardant high temperature-resistant intrinsically safe computer cable | |
| CN103871585A (en) | Ultra-flexible high-temperature-resistant anti-corrosion and fireproof oxide insulated cable | |
| CN114822951A (en) | Waterproof insulated wire and cable and preparation method thereof | |
| CN202373323U (en) | Flame-retardant control cable | |
| RU174138U1 (en) | SEALED FIRE RESISTANT CABLE | |
| CN201994126U (en) | Multifunctional power cable | |
| CN201829242U (en) | High temperature-resistant special CAT-5e cable | |
| CN104240802A (en) | Flexible cable for intrinsic safety DCS | |
| CN203858917U (en) | Special cable for control system of communication base station | |
| CN105702350A (en) | Waterproof variable frequency cable with low electromagnetism and resistant to interference | |
| CN203826062U (en) | Super-flexible high-temperature-resistant anti-corrosion and fireproof oxide insulated cable | |
| CN202976938U (en) | Six-core flame retardation light cable | |
| CN101950615A (en) | Flexible fireproof mineral insulated cable and manufacturing method thereof | |
| CN105427932A (en) | Halogen-free low-smoke and flame-retardant metallic shield monitoring type rubber jacketed flexible cable and production method therefor | |
| CN112002477A (en) | Explosion-proof cable for electrical equipment | |
| CN201893161U (en) | Soft type low smoke zero halogen cable for ship |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |