CN216054030U - Compression-resistant stretch-proof armored power cable - Google Patents
Compression-resistant stretch-proof armored power cable Download PDFInfo
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- CN216054030U CN216054030U CN202122807791.7U CN202122807791U CN216054030U CN 216054030 U CN216054030 U CN 216054030U CN 202122807791 U CN202122807791 U CN 202122807791U CN 216054030 U CN216054030 U CN 216054030U
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Abstract
The utility model relates to the technical field of electric wires and cables, in particular to a compression-resistant and stretch-resistant armored power cable, which comprises: the three power wire cores and the three control wire cores are wound by the wrapping tape in a pairwise tangent mode to form a conductive unit with a circular section; the filling layer is filled among the wrapping tape, the power wire core and the control wire core; the shielding layer, the fire retardant layer, the armor layer and the outer sheath are sequentially arranged on the outer side of the conductive unit; by arranging the composite armor belt comprising the anti-tensile rope and the pressure-resistant belt, after the composite armor belt is formed by wrapping, due to the structural characteristics of the composite armor belt, the cable has radial pressure resistance and axial tension resistance, and is relatively flexible as a whole, so that the composite armor belt is particularly suitable for places such as mining machinery or mine machinery and the like which need to be bent and stretched along with a mechanical mechanism and have certain pressure resistance.
Description
Technical Field
The utility model relates to the technical field of electric wires and cables, in particular to a compression-resistant and stretch-resistant armored power cable.
Background
The power cable is used for transmitting and distributing electric energy, is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater, and an armored cable mechanical protective layer can be added to cables of any structure so as to increase the mechanical strength of the cable and improve the anti-corrosion capability, and is a wire cable designed for areas which are easily damaged mechanically and are easily corroded.
Present armoured cable includes the steel band armor, steel wire armor and interlocking armor, the steel band armor has the resistance to compression effect to a certain extent, but tensile properties is relatively poor, the steel wire armor has better tensile properties, but compressive properties and bending property are relatively poor, and interlocking armor has good resistance to compression, tensile and bending property though, but interlocking armor is because its unsmooth form, lead to the increase of external diameter behind the stranding, and all be higher to the material and the technological requirement in armor area, if take the marginal acutely sharp-pointed or crackle appear, the potential safety hazard all can appear.
Prior art documents:
patent document 1: CN213781622U crosslinked polyethylene insulated steel tape armored compression-resistant and stretch-proof cable
Patent document 2: CN206497753U cable that low smoke and zero halogen just can lay perpendicularly
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a compression-resistant and stretch-resistant armored power cable, which comprises: the three power wire cores and the three control wire cores are wound by the wrapping tape in a pairwise tangent mode to form a conductive unit with a circular section; the filling layer is filled among the wrapping tape, the power wire core and the control wire core; the shielding layer, the fire retardant layer, the armor layer and the outer sheath are sequentially arranged on the outer side of the conductive unit;
the armored layer is formed by winding a composite armored belt, the composite armored belt comprises two compression-resistant belts which are distributed in parallel and a plurality of stretch-resistant ropes which are fixedly arranged between the two compression-resistant belts, the stretch-resistant ropes are distributed in parallel and are adjacent to each other, the compression-resistant belts are wound outside the fire retardant layer, the stretch-resistant ropes are parallel to the axial direction of a cable and are uniformly distributed on the outer walls of the periphery of the fire retardant layer along the winding direction of the compression-resistant belts, and the axial stretch-resistant capability of the compression-resistant belts is improved.
Furthermore, when the composite armor tape is lapped, the compression-resistant tapes on the two sides are overlapped and lapped.
Furthermore, the outer side walls of the two anti-pressure belts are respectively and fixedly provided with a locking belt, so that the anti-pressure belts are buckled with each other through the locking belts when being wrapped.
Further, the locking belt is a steel belt, the compression resistant belt is a plastic belt, and the stretch resistant rope is a steel wire rope or a fiber rope.
Further, the width of the locking strip is 1/2 of the width of the pressure-resistant strip.
Further, the inside and outside both sides of armor all are equipped with the bedding, the bedding includes the bedding area of lapping in the armor inside and outside.
Furthermore, a hot melt adhesive layer is arranged on one side face, opposite to the armor layer, of the backing layer, and the hot melt adhesive layer is fixedly adhered to the backing tape.
Further, the liner tape is laminated and wound on the inner side and the outer side of the armor layer, and the liner layer for sealing is formed on the inner side and the outer side of the armor layer.
Further, the width of the liner tape is equal to the width of the composite armor tape.
The utility model provides another technical scheme, and a processing technology of a compression-resistant and stretch-resistant armored power cable comprises the following steps:
step 1, manufacturing a conductive unit: the method comprises the following steps that three power wire cores and three control wire cores are stranded together by a stranding machine, a wrapping tape is wound outside six stranded wire cores by a wrapping machine to form a wrapping layer, then elastic ropes are embedded between the stranded wire cores and the wrapping tape, and the elastic ropes are compressed to form a filling layer, so that the conductive unit is manufactured;
step 5, manufacturing an armor layer and a cushion layer: firstly, wrapping a backing layer on the outer side of a fire retardant layer by using a wrapping machine in a way that a hot-melt adhesive layer faces outwards, then wrapping a composite armor tape on the outer side of the backing layer by using the wrapping machine, overlapping the compression-resistant tape parts in the wrapping process, fastening the buckling tape parts to form the armor layer, and finally wrapping a backing layer on the outer side of the armor layer in a way that a hot-melt adhesive layer faces inwards to complete the manufacturing of the backing layer;
Compared with the prior art, the utility model has the advantages that:
1. the pressure-resistant and stretch-resistant armored power cable provided by the utility model is provided with the composite armored belt consisting of the stretch-resistant rope and the stretch-resistant belt, and after the composite armored belt is formed by wrapping, due to the structural characteristics, the cable has radial pressure resistance and axial tensile resistance, and is relatively flexible as a whole, so that the cable is particularly suitable for occasions, such as mining machinery or mine machinery, needing to be bent and stretched along with a mechanical mechanism and having certain pressure resistance.
2. According to the compression-resistant stretch-proof armored power cable, the composite armored belt is mounted on the cable body only by ensuring that the pitches of the armored belt are consistent when the armored belt is wrapped, the lock catch belt portions on the compression-resistant belt are buckled with each other, so that a stable structure can be ensured, and compared with the existing interlocking armored processing technology, the compression-resistant stretch-proof armored power cable is lower in requirement and easy to process.
3. The inner side and the outer side of the armor layer of the anti-compression stretch-proof armored power cable are optimally designed, the lining layer is arranged, a waterproof sealing layer can be formed on the inner side and the outer side of the armor layer, the lining layer protecting effect is achieved, the waterproof capacity of the cable can be enhanced, the armor layer can be guaranteed to maintain the shape and cannot be loose, the inner layer structure and the outer layer structure can be protected, and abrasion is reduced.
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 the present disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the inventive subject matter of this disclosure.
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 perspective view of a compression-resistant and stretch-resistant armored power cable according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a compression-resistant, stretch-proof armored power cable according to an embodiment of the present invention;
FIG. 3 is a schematic view of a hierarchical structure of a compression resistant, stretch resistant armored power cable according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of a composite armor tape segment in a crush resistant and stretch resistant armored power cable according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of an armor layer and a backing layer of a compression-resistant, stretch-proof armored power cable according to an embodiment of the present invention;
fig. 6 is a schematic view of a buckling state of the compression-resistant belt in the compression-resistant and stretch-resistant armored power cable according to the embodiment of the utility model.
In the figure, 1, a control wire core; 2. a power line core; 3. a filling layer; 4. wrapping a tape; 5. a shielding layer; 6. a fire barrier layer; 7. an armor layer; 71. a tensile strand; 72. a pressure resistant belt; 721. a locking strap; 8. a backing layer; 81. a hot melt adhesive layer; 9. outer sheath
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 utility model. 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 present steel band armor or steel wire armor all have certain not enough under stretch-proofing or resistance to compression comprehensive condition, and the processing technology of interlocking armoured cable is complicated again, and interlocking armor is because its unique unsmooth surface, the cable that leads to taking interlocking armor increases at the stranding back external diameter, and all higher to the material of armor area and technological requirement, if take the marginal acutely sharp-pointed or crackle appear, after long-time work, because the operation of cable generates heat and can lead to the electricity branch, the condition of water branch takes place, all can bring the potential safety hazard.
With reference to fig. 1 and 2, an object of the present invention is to provide a compression-resistant and stretch-resistant armored power cable, which has an armored layer 7 formed by wrapping a composite armored tape, so that the cable has the advantages of compression resistance, stretch resistance and easy bending, and has a small radial thickness relative to the interlocked armor, so that the outer diameter of the cable body after cabling is reduced.
As shown in the figure, the compression-resistant and stretch-resistant armored power cable as an optional example mainly comprises a control wire core 1, a power wire core 2, a filling layer 3, a wrapping tape 4, a shielding layer 5, a fire retardant layer 6, an armor layer 7 and an outer sheath 9.
Wherein, control sinle silk 1 and power sinle silk 2 all set up to three, and three control sinle silk 1, power sinle silk 2 two liang tangent ground are formed the cross-section for circular shape conducting unit around the winding of band 4, and filling layer 3 is filled around between band 4 and power sinle silk 2, control sinle silk 1.
In a preferred embodiment, the control wire core 1 is formed by extruding and insulating the outer layer of a twisted tinned thin copper wire for transmitting control signals, the power wire core 2 is twisted regularly by a wire twisting machine to twist the thin copper wire, and then the steel wire can be braided on the outer layer of the conductor for increasing strength, and the outer layer is formed by extruding and insulating the outer layer for power transmission.
The filling layer 3 adopts halogen-free or low-halogen filling ropes.
Adopt the CPP area around band 4, around the outside at control core 1, power core 2 and filling rope, form the cross-section and be circular shape conductive element.
Further, the outer side of the conductive unit is sequentially provided with a shielding layer 5, a fire retardant layer 6, an armor layer 7 and an outer sheath 9.
In a preferred embodiment, the shielding layer 5 is formed by weaving fine copper wires, the woven mesh is woven and wrapped on the outer side of the wrapping tape 4, the weaving coverage rate is 80% -90%, the shielding layer is mainly used for preventing electromagnetic wave interference, and the fire retardant layer 6 is made of fire-resistant mica tapes and can protect the interior of the cable from being influenced by external high temperature within a certain period of time.
As shown in fig. 3 and 4, the armor layer 7 is formed by wrapping a composite armor tape.
Further, compound armor area includes that two parallel distribution's resistance to compression area 72 and a plurality of are fixed sets up the stretch-proofing rope 71 between two resistance to compression areas 72, and two adjacent stretch-proofing ropes 71 parallel distribution, and resistance to compression area 72 winds the package in the outside of back-fire relief layer 6, and stretch-proofing rope 71 is parallel with the cable axial and evenly distributed is at the week side outer wall of back-fire relief layer 6 for promote the axial stretch-proofing ability of resistance to compression area 72.
Specifically, the tensile rope 71 that two parallel resistance to compression bands 72 and middle settings form compound armor area, compound armor area is in order to wind the outside at fire-resistant mica tape around the package form, resistance to compression band 72 just can provide the radial support of cable, in order to improve the compressive property of cable, when resistance to compression band 72 does not take place axial displacement each other, the axial stretch-proofing ability in compound armor area can be strengthened again to tensile rope 71, thereby improve the tensile property of cable, tensile rope 71 is flexible, and resistance to compression band 72 is the distribution of coil spring shape, also easy bending, thereby make the whole more soft of cable.
Therefore, the armor layer 7 formed by wrapping the composite armor tape not only enables the cable to have radial compression resistance and axial tensile resistance, but also enables the whole cable to be relatively flexible, and is particularly suitable for occasions needing bending and stretching along with a mechanical mechanism and having certain compression resistance, such as mining machinery or mine machinery.
As shown in connection with fig. 5 and 6, to ensure that the pressure strips 72 are not displaced in the axial direction relative to each other.
Further, when the composite armor tape is wrapped, the compression-resistant tapes 72 on the two sides are overlapped with each other, and the outer side walls of the two compression-resistant tapes 72 are respectively and fixedly provided with the lock belt 721 in central symmetry, so that the compression-resistant tapes 72 are buckled with each other through the lock belt 721 when being wrapped.
In a preferred embodiment, the tensile cords 71 are steel wire ropes or fiber ropes, which can be selected according to the tensile strength requirement, and the tensile cords 71 are first woven to form a rope ladder shape.
The pressure resistant belt 72 can be made of high-strength plastic belt, and the plastic material is convenient for hot melting and covers and fixes the end part of the tensile rope 71.
The locking belt 721 is made of a stainless steel belt, and particularly preferably, the width of the locking belt 721 is 1/2 of the width of the compression resistant belt 72, the stainless steel belt is attached to the side wall of the compression resistant belt 72, the compression resistant capability of the compression resistant belt 72 can be enhanced, the locking belt 72 can be mutually staggered during wrapping, the compression resistant belt 72 is fixed in a mutually buckled mode in the axial direction and cannot be displaced, and the axial stretching resistant function of the stretch resistant rope 71 is facilitated.
As shown in fig. 1, 2 and 5, in order to make the inner and outer layers of the armor layer 7 more flat and reduce the abrasion of the inner and outer layers of the armor layer 7, the inner and outer sides of the armor layer 7 are provided with the cushion layers 8.
Further, for reinforcing the leakproofness of backing layer 8, backing layer 8 is including the liner area around the package in armor 7, the outside, and backing layer 8 all is equipped with hot melt adhesive 81 with the relative side of armor 7, and hot melt adhesive 81 is fixed to be adhered on the liner area, and the liner area is folded the pressure and is twined in the inside and outside of armor 7 to form sealed backing layer 8 in the inside and outside of armor 7.
In a preferred embodiment, the width of the liner belt is equal to that of the composite armor belt, the armor layer 7 can be completely wrapped, the hot melt adhesive layer 81 can adopt PA hot melt adhesive or TPU hot melt adhesive, the liner belt adopts flame-retardant woven belt, and the hot melt adhesive layer 81 is melted when the outer sheath 9 is extruded and wrapped, and can be adhered to each other, so that the sealing effect is achieved.
So, backing 8 can form a waterproof sealing layer and play the liner protecting effect in armor 7's the inside and outside, not only can strengthen the waterproof ability of cable, can also guarantee that armor 7 maintains the shape and can not be loose to can play the guard action to inside and outside layer structure, with reducing wear.
The embodiment of the utility model also provides a processing technology of the compressive and tensile armored power cable with the optimized structure, which comprises the following steps:
step 1, manufacturing a conductive unit:
1-1) manufacturing a control wire core 1: 7 tinned fine copper wires are stranded into a wire by using a stranding machine, and then an extruder is used for extruding and wrapping crosslinked polyethylene outside the wire for insulation so as to transmit a control signal;
1-2) manufacturing a power wire core 2: the method comprises the following steps of stranding 61 strands of fine copper wires in a regular stranding mode by using a stranding machine to form a wire, then braiding steel wires on the outer layer of the wire by using a braiding machine for increasing strength, and extruding and wrapping crosslinked polyethylene insulation on the outermost layer by using an extruder for power transmission;
1-3) stranding wire cores: the method comprises the following steps that three power wire cores 2 and three control wire cores 1 are stranded together by a stranding machine, a wrapping tape 4 is wound outside six stranded wire cores by the wrapping machine to form a wrapping layer, then an elastic rope is embedded between the stranded wire cores and the wrapping tape 4, and a filling layer 3 is formed by pressing, so that the conductive unit is manufactured;
4-1) manufacturing a rope ladder: firstly, a plurality of stretch-proofing ropes 71 are arranged in parallel, and two ends of each stretch-proofing rope 71 are fixed in parallel to form a rope ladder shape;
4-1) manufacturing a composite armor tape: pulling the stretch-proofing rope 71 by using a tractor, extruding plastic strips at rope ladder knots woven by the stretch-proofing rope 71 by using a plastic extruder, forming the pressure-resisting belts 72 by using the plastic strips through a mold and cooling, then respectively sticking locking belts 721 on the upper and lower surfaces of the two pressure-resisting belts 72, and forming a composite armor belt after shaping;
step 5, manufacturing an armor layer 7 and a cushion layer 8:
5-1) manufacturing an inner liner layer 8: firstly, a hot melt adhesive layer 81 is wrapped outwards by a backing layer 8 on the outer side of a fire retardant layer 6 by a wrapping machine;
5-2) manufacturing an armor layer 7: then, a composite armor tape is wound on the outer side of the backing layer 8 by using a winding machine, the pressure resistant tapes 72 are overlapped with each other in the winding process, and the lock buckle tapes 721 are buckled with each other to form an armor layer 7;
5-3) manufacturing an outer liner layer 8: finally, a liner layer 8 is wrapped inwards on the hot melt adhesive layer 81 at the outer side of the armor layer 7, and the liner layer 8 is manufactured;
By combining the above embodiments, by providing the composite armor tape comprising the tensile rope 71 and the pressure resistant tape 72, after the composite armor tape is wrapped and formed, due to the structural characteristics of the composite armor tape, the cable has radial compressive resistance and axial tensile resistance, is relatively flexible as a whole, and is suitable for being used in places such as mining machinery or mine machinery, which need to be bent and stretched along with a mechanical mechanism and have certain compressive resistance.
The composite armor tape of the utility model can ensure a stable structure only by ensuring the consistent pitch in the lapping process and buckling the locking tape 721 part on the pressure resistant belt 72, and compared with the existing interlocking armor processing process, the composite armor tape has lower requirement and is easy to process.
The inside and outside of armor 7 has still set up bedding 8, can form a waterproof sealing layer and play the liner protective effect in the inside and outside of armor 7, not only can strengthen the waterproof ability of cable, can also guarantee that armor 7 maintains the shape and can not loose to can play the guard action to inside and outside layer structure, with reducing wear.
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 utility model. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (9)
1. A compression-resistant stretch-proof armored power cable, comprising:
the three power wire cores and the three control wire cores are wound by the wrapping tape in a pairwise tangent mode to form a conductive unit with a circular section;
the filling layer is filled among the wrapping tape, the power wire core and the control wire core;
the shielding layer, the fire retardant layer, the armor layer and the outer sheath are sequentially arranged on the outer side of the conductive unit;
the armored layer is formed by winding a composite armored belt, the composite armored belt comprises two compression-resistant belts which are distributed in parallel and a plurality of stretch-resistant ropes which are fixedly arranged between the two compression-resistant belts, the stretch-resistant ropes are distributed in parallel and are adjacent to each other, the compression-resistant belts are wound outside the fire retardant layer, the stretch-resistant ropes are parallel to the axial direction of a cable and are uniformly distributed on the outer walls of the periphery of the fire retardant layer along the winding direction of the compression-resistant belts, and the axial stretch-resistant capability of the compression-resistant belts is improved.
2. The compression-resistant and stretch-resistant armored power cable of claim 1, wherein the compression-resistant tapes on both sides are laminated with each other during the wrapping of the composite armored tape.
3. The armored power cable with resistance to compression and stretching as claimed in claim 2, wherein the outer side walls of the two compression tapes are respectively and fixedly provided with a locking belt, so that the compression tapes are buckled with each other through the locking belts when being wrapped.
4. The compression-resistant, stretch-resistant armored power cable of claim 3, wherein the locking strip is a steel strip, the compression-resistant strip is a plastic strip, and the stretch-resistant cord is a steel wire rope or a fiber rope.
5. The compression-resistant, stretch-resistant armored power cable of claim 1, wherein the width of the locking strip is 1/2 of the width of the compression-resistant strip.
6. The tension-resistant armored power cable as claimed in claim 1, wherein the armor layer is provided with a backing layer on both inner and outer sides thereof, and the backing layer comprises a backing tape wrapped around the inner and outer sides of the armor layer.
7. The tension-resistant, crush-resistant armored power cable of claim 6, wherein the backing layer is provided with a layer of hot-melt adhesive on a side opposite to the armor layer, the layer of hot-melt adhesive being fixedly adhered to the backing tape.
8. The tension resistant armored power cable of claim 7, wherein the backing tape is wrapped around the armor on the inner and outer sides thereof in a laminated manner and forms a sealed backing layer on the inner and outer sides of the armor.
9. The compression and stretch resistant armored power cable of claim 8, wherein the liner tape has a width equal to the width of the composite armor tape.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122807791.7U CN216054030U (en) | 2021-11-16 | 2021-11-16 | Compression-resistant stretch-proof armored power cable |
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| CN202122807791.7U CN216054030U (en) | 2021-11-16 | 2021-11-16 | Compression-resistant stretch-proof armored power cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114049998A (en) * | 2021-11-16 | 2022-02-15 | 无锡市华美电缆有限公司 | Compression-resistant stretch-proof armored power cable |
| CN114566318A (en) * | 2022-03-17 | 2022-05-31 | 扬州华城电缆有限公司 | Durable power cable for photovoltaic power generation system |
-
2021
- 2021-11-16 CN CN202122807791.7U patent/CN216054030U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114049998A (en) * | 2021-11-16 | 2022-02-15 | 无锡市华美电缆有限公司 | Compression-resistant stretch-proof armored power cable |
| CN114049998B (en) * | 2021-11-16 | 2022-09-13 | 无锡市华美电缆有限公司 | Compression-resistant stretch-proof armored power cable |
| CN114566318A (en) * | 2022-03-17 | 2022-05-31 | 扬州华城电缆有限公司 | Durable power cable for photovoltaic power generation system |
| CN114566318B (en) * | 2022-03-17 | 2023-12-08 | 扬州华城电缆有限公司 | Durable power cable for photovoltaic power generation system |
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