CN220065209U - Shock-resistant fiber braided shield machine rubber jacketed flexible cable - Google Patents
Shock-resistant fiber braided shield machine rubber jacketed flexible cable Download PDFInfo
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- CN220065209U CN220065209U CN202321327898.4U CN202321327898U CN220065209U CN 220065209 U CN220065209 U CN 220065209U CN 202321327898 U CN202321327898 U CN 202321327898U CN 220065209 U CN220065209 U CN 220065209U
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- layer
- flexible cable
- wire
- wires
- resistant fiber
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- 239000000835 fiber Substances 0.000 title claims abstract description 42
- 229920001971 elastomer Polymers 0.000 title claims abstract description 20
- 230000035939 shock Effects 0.000 title claims description 14
- 239000004020 conductor Substances 0.000 claims abstract description 26
- 229920005549 butyl rubber Polymers 0.000 claims abstract description 18
- 239000004677 Nylon Substances 0.000 claims abstract description 11
- 229920001778 nylon Polymers 0.000 claims abstract description 11
- 230000006837 decompression Effects 0.000 claims abstract description 9
- 125000003118 aryl group Chemical group 0.000 claims abstract description 7
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 6
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims abstract description 5
- 229920000271 Kevlar® Polymers 0.000 claims description 27
- 239000004761 kevlar Substances 0.000 claims description 27
- 229910001220 stainless steel Inorganic materials 0.000 claims description 23
- 239000010935 stainless steel Substances 0.000 claims description 14
- 238000009941 weaving Methods 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 229910052731 fluorine Inorganic materials 0.000 claims description 4
- 239000011737 fluorine Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000005253 cladding Methods 0.000 claims description 2
- 230000005641 tunneling Effects 0.000 claims 9
- 239000011162 core material Substances 0.000 abstract description 53
- 239000010410 layer Substances 0.000 abstract description 53
- 239000012790 adhesive layer Substances 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 description 4
- 238000009954 braiding Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000017105 transposition Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Insulated Conductors (AREA)
Abstract
The utility model discloses an impact-resistant fiber braided shielding shield machine rubber jacketed flexible cable, which comprises three power wire cores, three ground wire cores and an opposite type wholly aromatic copolyamide stretching fiber core material which are twisted together to form a cable core, wherein each power wire core comprises a power wire core conductor, an EVA water-blocking adhesive layer, an ETFE insulating layer and a conductive fiber braided shielding layer, each ground wire core comprises a ground wire core conductor and a semiconductive nylon belt wrapping layer, and the outside of each cable core is sequentially coated with a fluororesin belt wrapping antifriction layer, a butyl rubber water-blocking decompression layer, an impact-resistant mixed wire plain weave net and an ethylene propylene diene monomer rubber outer sheath. The rubber jacketed flexible cable has good impact resistance, the fiber shielding layer of each power wire core has certain stretching resistance and impact resistance, the occurrence of the fracture condition of the shielding layer is effectively prevented, the electrical characteristics are stable, the service life is long, and the durability is better.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to an impact-resistant fiber braided shield machine rubber jacketed flexible cable.
Background
The rubber jacketed flexible cable can be used for power supply connection of tunnel shield machines and similar equipment with rated voltage of 8.7/15KV and below, and the cable needs to have the function of softness and mobility. Typically the long term allowable operating temperature of the cable conductor is 90 degrees and the minimum bend radius of the cable is six times the cable diameter. However, although the common rubber jacketed flexible cable can be suitable for long-period flexible work, under the complex and changeable tunnel working condition, the cable core structure deformation is easy to occur due to slight impact force, the shielding layer of each power cable core is broken, the shielding effect is unstable, the electrical characteristics are greatly influenced, the service life is short, and the durability is poor.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide the shock-resistant fiber braided shield machine rubber jacketed flexible cable which has good shock resistance, and the fiber shielding layer of each power wire core has a certain degree of stretch resistance and shock resistance, so that the occurrence of the fracture condition of the shielding layer is effectively prevented, the electrical characteristics are stable, the service life is long, and the durability is better.
The utility model solves the technical problems through the following technical proposal.
The utility model provides a shielding shield machine rubber cover flexible cable is woven to shock resistance type fibre, includes three power core, three ground core and the mutual transposition of the full aromatic copolyamide tensile fiber core of counterpoint constitute the cable core, the power core includes power core conductor, EVA water blocking adhesive linkage, ETFE insulating layer and conducting fiber braid shielding layer, the ground wire core includes ground wire core conductor and semiconductive nylon tape and winds the covering, the cable core outside cladding has fluoro resin tape around covering antifriction layer, butyl rubber water blocking decompression layer, shock resistance hybrid flat-woven mesh and ethylene propylene diene monomer outer sheath in proper order, the conducting fiber braid shielding layer is inside and outside double-deck kevlar and is mutual reverse spiral package and weave and form the cylinder support net body, a plurality of conductive fiber bundles have evenly been laid to circumference on the support net body, the conductive fiber bundle is a plurality of polyacrylonitrile base carbon fiber transposition and coats copper conductive coating and form, shock resistance hybrid flat-woven mesh is inside and outside double-deck hybrid flat-mesh structure and all is kevlar and mixed wire and stainless steel wire and weaves and form.
Preferably, the power wire core conductor is formed by concentrically twisting a plurality of tinned copper monofilaments with diameters of 0.08-0.3 mm.
Preferably, the strand length of the power core conductor is 10 to 20 times the outer diameter of the power core conductor.
Preferably, the ground wire core conductor is a circular conductor structure formed by twisting and compacting a plurality of soft copper wires with the wire diameter of 0.05mm to 0.08 mm.
Preferably, the semi-conductive nylon tape wrapping layer is a semi-conductive nylon tape multi-layer overlapping wrapping structure.
Preferably, the butyl rubber water-blocking decompression layer is of a multi-layer covering and wrapping structure of a butyl rubber belt, and the covering rate of the butyl rubber belt is one-fourth to one-half of the width of the butyl rubber belt.
Preferably, the polyacrylonitrile-based carbon fiber has a wire diameter of not more than 25 μm.
Preferably, the friction reducing layer of the fluorine resin tape wrapping is of a fluorine resin tape unidirectional spiral lapping and wrapping structure and has a thickness of 0.1mm to 0.5mm.
Preferably, the inner layer mixed wire plain weave net is formed by weaving fine kevlar wires and fine stainless steel wire mixed wires, the outer layer mixed wire plain weave net is formed by weaving coarse kevlar wires and coarse stainless steel wire mixed wires, the diameter of the coarse kevlar wires is 2 to 8 times that of the fine kevlar wires, the diameter of the coarse stainless steel wires is 3 to 5 times that of the fine stainless steel wires, the diameter of the fine kevlar wires is not more than 75% of that of the fine stainless steel wires, and the diameter of the coarse kevlar wires is not more than 80% of that of the coarse stainless steel wires.
Preferably, the inner layer mixed yarn flat woven net has a weaving density greater than that of the outer layer mixed yarn flat woven net.
The utility model has the beneficial effects that:
1. the para-type wholly aromatic copolyamide stretching fiber core material is added in the cable core to keep the power wire core and the ground wire core at intervals, so that the para-type wholly aromatic copolyamide stretching fiber has high stretching elastic modulus, is favorable for improving stretching resistance, is favorable for relieving stress concentration in the cable core, is favorable for relieving load stress applied to each wire core, keeps the cable core structure balanced, enhances mechanical strength, is favorable for improving impact resistance and can bear certain mechanical external force. The conductive fiber braided shielding layer is formed by braiding the inner and outer double-layer Kevlar wires to form a cylindrical supporting net body, conductive fiber bundles are distributed on the supporting net body, and the Kevlar wires have high strength, high modulus, better flexibility, certain shock resistance, effective prevention of the breaking condition of the shielding layer, stable electrical characteristics of the cable, prolonged service life and better durability.
2. The conductive fiber braided shielding layer effectively replaces a metal material shielding layer, so that the weight is reduced and the cost is reduced on the basis of ensuring stable shielding performance.
3. The shock-resistant mixed-wire plain weave net is added between the butyl rubber water-blocking decompression layer and the ethylene propylene diene monomer rubber outer sheath, so that the shock resistance of the cable is enhanced, the shock-resistant mixed-wire plain weave net layer is formed by weaving a Kevlar stay wire and a stainless steel wire mixed wire, the rigidity of the stainless steel wire is combined with the flexibility of the Kevlar stay wire, the mechanical strength, the shock resistance and the bending resistance of the cable are improved, when the cable is subjected to slight impact, the damage to each wire core and the shielding layer in the cable core caused by the action of external force is effectively inhibited, the mechanical strength and the electrical characteristics of the cable are guaranteed, the safety and the reliability are improved, the service life is prolonged, and the durability is better.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model.
Reference numerals: the cable comprises a 1-power cable core, a 2-ground cable core, a 3-para-type wholly aromatic copolyamide stretched fiber core, a 4-power cable core conductor, a 5-EVA water-blocking adhesive layer, a 6-ETFE insulating layer, a 7-conductive fiber woven shielding layer, an 8-ground cable core conductor, a 9-semiconductive nylon tape wrapping layer, a 10-fluororesin tape wrapping antifriction layer, an 11-butyl rubber water-blocking decompression layer, a 12-shock-resistant mixed-wire plain weave net and a 13-ethylene propylene diene monomer rubber outer sheath.
Description of the embodiments
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, the rubber jacketed flexible cable of the impact-resistant fiber braided shield machine provided by the embodiment of the utility model comprises three power wire cores 1, three ground wire cores 2 and a para-type wholly aromatic copolyamide stretched fiber core material 3 which are twisted together to form a cable core. The power wire core 1 comprises a power wire core conductor 4, an EVA water-blocking adhesive layer 5, an ETFE insulating layer 6 and a conductive fiber braiding shielding layer 7, and specifically, the power wire core conductor 4 is formed by concentrically twisting a plurality of tinned copper monofilaments with diameters of 0.08-0.3 mm, and further, the twisting distance of the power wire core conductor 4 is 10-20 times of the outer diameter of the power wire core conductor 4. The conductive fiber braided shielding layer 7 is a cylindrical supporting net body formed by mutually reversely spirally wrapping and braiding inner and outer double-layer Kevlar wires, a plurality of conductive fiber bundles are uniformly distributed on the circumference of the supporting net body, the conductive fiber bundles are formed by twisting a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coatings, and the wire diameter of the polyacrylonitrile-based carbon fibers is not more than 25 mu m. The ground wire core 2 comprises a ground wire core conductor 8 and a semiconductive nylon belt wrapping layer 9, and specifically, the ground wire core conductor 8 is formed by twisting and compacting a plurality of soft copper wires with the wire diameters of 0.05mm to 0.08mm to form a circular conductor structure. The semi-conductive nylon tape wrapping layer 9 is a semi-conductive nylon tape multi-layer overlapping wrapping structure.
The cable core is sequentially coated with a fluororesin tape wrapping antifriction layer 10, a butyl rubber water-blocking decompression layer 11, an impact-resistant mixed-wire plain weave net 12 and an ethylene propylene diene monomer rubber outer sheath 13. In one embodiment, the fluororesin tape-wrapped friction-reducing layer 10 is a fluororesin tape unidirectional spiral-lap wrapped structure and has a thickness of 0.1mm to 0.5mm. In one embodiment, the butyl rubber water-blocking decompression layer 11 is a butyl rubber tape multilayer lapping structure, and the butyl rubber tape lapping rate is one-fourth to one-half of the width of the butyl rubber tape. The anti-impact mixed wire plain weave net 12 is of an inner and outer double-layer mixed wire plain weave net structure and is formed by weaving a Kevlar stay wire and stainless steel wire mixed wires, and further, the weaving density of the inner layer mixed wire plain weave net is greater than that of the outer layer mixed wire plain weave net. Specifically, the inner layer mixed wire plain weave net is formed by weaving fine Kevlar wires and fine stainless steel wire mixed wires, the outer layer mixed wire plain weave net is formed by weaving coarse Kevlar wires and coarse stainless steel wire mixed wires, the diameter of the coarse Kevlar wires is 2 to 8 times that of the fine Kevlar wires, the diameter of the coarse stainless steel wires is 3 to 5 times that of the fine stainless steel wires, the diameter of the fine Kevlar wires is not more than 75% of that of the fine stainless steel wires, and the diameter of the coarse Kevlar wires is not more than 80% of that of the coarse stainless steel wires.
The foregoing is merely illustrative of the present utility model, and the scope of the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (10)
1. The shock-resistant fiber braided shield machine rubber jacketed flexible cable is characterized in that: including three power sinle silk (1), three ground wire core (2) and the tensile fibrous core (3) of counterpoint full aromatic copolyamide strand jointly constitute the cable core, power sinle silk (1) include power sinle silk conductor (4), EVA water blocking adhesive linkage (5), ETFE insulating layer (6) and conductive fiber braid shielding layer (7), ground wire core (2) include ground wire core conductor (8) and semiconductive nylon tape around covering (9), the outside cladding of cable core has fluororesin area around covering antifriction layer (10), butyl rubber water decompression layer (11), anti-impact hybrid flat-woven net (12) and ethylene propylene diene monomer rubber oversheath (13) in proper order, conductive fiber braid shielding layer (7) are inside and outside double-deck Kevlar and weave each other for reverse spiral around the package and form cylinder supporting network body, a plurality of conductive fiber bundles have evenly been laid on the supporting network body, conductive fiber bundles are a plurality of polyacrylonitrile base carbon fiber strands and coat copper conductive coating and form, hybrid flat-woven net (12) are inside and outside double-deck hybrid wire flat-woven net structure and all are the wire and form the hybrid wire with the stainless steel wire.
2. The impact resistant fiber woven shield tunneling machine rubber jacketed flexible cable according to claim 1, wherein: the power wire core conductor (4) is formed by concentrically twisting a plurality of tinned copper monofilaments with diameters of 0.08-0.3 mm.
3. The impact resistant fiber woven shield tunneling machine rubber jacketed flexible cable according to claim 2, characterized in that: the twisting distance of the power wire core conductor (4) is 10 to 20 times of the outer diameter of the power wire core conductor (4).
4. The impact resistant fiber woven shield tunneling machine rubber jacketed flexible cable according to claim 1, wherein: the ground wire core conductor (8) is formed by twisting and compacting a plurality of soft copper wires with the wire diameters of 0.05mm to 0.08mm to form a circular conductor structure.
5. The impact resistant fiber woven shield tunneling machine rubber jacketed flexible cable according to claim 1, wherein: the semi-conductive nylon belt wrapping layer (9) is a semi-conductive nylon belt multi-layer overlapping wrapping structure.
6. The impact resistant fiber woven shield tunneling machine rubber jacketed flexible cable according to claim 1, wherein: the butyl rubber water-blocking decompression layer (11) is of a multi-layer covering and wrapping structure of a butyl rubber belt, and the covering rate of the butyl rubber belt is one fourth to one half of the width of the butyl rubber belt.
7. The impact resistant fiber woven shield tunneling machine rubber jacketed flexible cable according to claim 1, wherein: the wire diameter of the polyacrylonitrile-based carbon fiber is not more than 25 mu m.
8. The impact resistant fiber woven shield tunneling machine rubber jacketed flexible cable according to claim 1, wherein: the friction reducing layer (10) of the fluorine resin tape wrapping is of a fluorine resin tape unidirectional spiral lapping and wrapping structure and has the thickness of 0.1mm to 0.5mm.
9. The impact resistant fiber woven shield tunneling machine rubber jacketed flexible cable according to claim 1, wherein: the inner layer mixed wire plain weave net is formed by weaving fine Kevlar wires and fine stainless steel wires, the outer layer mixed wire plain weave net is formed by weaving coarse Kevlar wires and coarse stainless steel wires, the diameter of the coarse Kevlar wires is 2 to 8 times that of the fine Kevlar wires, the diameter of the coarse stainless steel wires is 3 to 5 times that of the fine stainless steel wires, the diameter of the fine Kevlar wires is not more than 75% of that of the fine stainless steel wires, and the diameter of the coarse Kevlar wires is not more than 80% of that of the coarse stainless steel wires.
10. The impact resistant fiber woven shield tunneling machine rubber jacketed flexible cable according to claim 1, wherein: the weaving density of the inner layer mixed-line plain weave net is larger than that of the outer layer mixed-line plain weave net.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202321327898.4U CN220065209U (en) | 2023-05-29 | 2023-05-29 | Shock-resistant fiber braided shield machine rubber jacketed flexible cable |
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CN202321327898.4U CN220065209U (en) | 2023-05-29 | 2023-05-29 | Shock-resistant fiber braided shield machine rubber jacketed flexible cable |
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CN220065209U true CN220065209U (en) | 2023-11-21 |
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CN202321327898.4U Active CN220065209U (en) | 2023-05-29 | 2023-05-29 | Shock-resistant fiber braided shield machine rubber jacketed flexible cable |
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- 2023-05-29 CN CN202321327898.4U patent/CN220065209U/en active Active
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