CN218826293U - High-torsion-resistant flexible conductor and cable - Google Patents

Abstract

The utility model discloses a high resistant flexible conductor and cable of turning round, high resistant flexible conductor of turning round includes many groups strand strands, the strand strands includes the copper wire monofilament of many bunches hank, multiunit strand strands is by the inlayer outside distribute and compound twist in proper order around the central axis circumference of high resistant flexible conductor of turning round, the strand pitch ratio of the copper wire monofilament in the strand strands is 20 ~ 25, the compound twist pitch ratio of the outermost strand of high resistant flexible conductor of turning round is 12 ~ 16, and by skin to inlayer, the compound twist pitch ratio of every layer of strand strands increases gradually. The high-torsion-resistance soft conductor can obviously improve the torsion resistance by setting the blending between different twisting pitch-diameter ratios, and has the advantages of tight combination, good torsion resistance and mechanical properties, and good conductivity.

Description

High-torsion-resistant flexible conductor and cable

Technical Field

The utility model relates to a wire and cable makes technical field, especially relates to a high resistant flexible conductor and cable of turning round.

Background

Wire and cable for transmitting electric energy, information and wire products for electromagnetic energy conversion, wire and cable in the broad sense also referred to as cable for short, and cable in the narrow sense means insulated cable, which may be defined as an aggregate consisting of one or more insulated cores, and their respective possible coatings, total protective layers and outer protective layers, and cable may have additional conductors without insulation.

In recent years, more and more flexible electric cables capable of being moved and used are required, such as cables for wind power generation, cables for coal mining machines and the like, the service environment of such cable products is severe, the cables are frequently bent and twisted, and round copper wire monofilaments in the conductor are easy to break, so that the conductor is required to have excellent torsion resistance and mechanical properties.

In view of the above, there is a need for a new high torsion-resistant flexible conductor and cable that solves or at least alleviates the above-mentioned technical drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high resistant flexible conductor and cable of turning round aims at solving among the prior art conductor resistant turn round the relatively poor technical problem of performance and mechanical properties.

In order to achieve the above object, according to one aspect of the present invention, the present invention provides a high torsion-resistant flexible conductor, which comprises a plurality of sets of strand strands, wherein the strand strands comprise a plurality of twisted copper wire monofilaments, the plurality of sets of strand strands are distributed from an inner layer to an outer layer around the circumference of the central axis of the high torsion-resistant flexible conductor and are sequentially twisted in a compound manner, the twist pitch diameter ratio of the copper wire monofilaments in the strand bundles is 20-25, the twist pitch diameter ratio of the strand bundles at the outermost layer of the high-twist-resistant soft conductor is 12-16, and the twist pitch diameter ratio of each strand bundle is gradually increased from the outer layer to the inner layer.

In one embodiment, the directions of twist of the layers of the strand bundles are all left-hand.

In one embodiment, the strand direction of the copper wire monofilaments in the strand bundle is right-hand.

In one embodiment, the high torsion-resistant flexible conductor has a nominal cross-sectional area of 70mm ² 、95mm ² 、120mm ² 、150mm ² 、185mm ² 、240mm ² 、300mm ² 、400mm ² One of them.

In one embodiment, the high torsion-resistant flexible conductor has a nominal cross-sectional area of 300mm ² The number of the layers of the plurality of groups of strand wires is 4, the number of the strand wires in each layer is respectively 3, 8, 15 and 21 from the inner layer to the outer layer.

In one embodiment, the high torsion-resistant soft conductor has a nominal cross-sectional area of 240mm ² The number of the groups of strand bundles is 4, the strand bundles are arranged from the inner layer to the outer layer, and the number of the strand bundles in each layer is 1, 7, 12 and 18.

In one embodiment, 30 copper wire filaments are provided for each strand, the copper wire filaments having a diameter of 0.50mm.

In one embodiment, the high torsion-resistant soft conductor is a type 5 soft copper conductor or a type 5 tinned soft copper conductor.

In one embodiment of the present invention, the substrate is, the complex twisting pitch diameter ratio of each layer of strand is gradually increased by 4 from the outer layer to the inner layer.

According to another aspect of the utility model, the utility model also provides a cable, the cable comprises a sheath and the high torsion-resistant flexible conductor, wherein the sheath wraps the high torsion-resistant flexible conductor.

The utility model discloses among the technical scheme, high resistant flexible conductor of twisting includes the stranded wire strand of many groups, and the stranded wire strand includes the copper wire monofilament of many bunches of twists, and multiunit stranded wire strand is distributed and is twisted again in proper order around the central axis circumference of high resistant flexible conductor of twisting by the inlayer outside, and the stranded pitch ratio of the copper wire monofilament in the stranded wire strand is 20 ~ 25, and the stranded pitch ratio of the outermost stranded wire strand of high resistant flexible conductor of twisting is 12 ~ 16, and by skin to inlayer, the stranded pitch ratio of every layer of stranded wire strand increases gradually in proper order. In the standard of a lead product, the smaller the pitch-diameter ratio of the lead is, the tighter the stranding is, the smaller the gap between single wires is, but the too small pitch-diameter ratio easily causes the untight combination of two adjacent layers of strand bundles; the larger the pitch-diameter ratio is, the larger the gap of the stranded wire is, the loose stranding is and the strand scattering is easy; in the stranded conductor, the actual length of each single wire is longer than the length of the conductor, the ratio of the actual length of the single wire to the length of the conductor is a stranding coefficient, the smaller the pitch-diameter ratio of the conductor is, the larger the stranding coefficient is, the more materials are used, the larger the direct current resistance is, and therefore, the smaller the pitch-diameter ratio is, the more the material is, the larger the pitch-diameter ratio is, the less the material is, the tighter the stranding is; the copper wire monofilaments in each group of strand are stranded with the strand pitch diameter ratio of 20-25, so that the strands are tightly stranded, the strands are not easy to scatter, the resistance is low, the outer-layer multiple-stranded pitch diameter is small among multiple groups of strand strands, the stranding is tighter, the loosening caused by frequent bending and twisting under the severe environment of the wire can be effectively prevented, the inner-layer multiple-stranded pitch diameter ratio is sequentially increased, the material is saved, and the conductivity of the conductor is also improved. The utility model can obviously improve the torsion resistance by setting the allocation between different twisting pitch diameter ratios, has the advantages of tight combination, good torsion resistance, mechanical property and electrical conductivity.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic cross-sectional structure diagram of a high torsion-resistant flexible conductor according to an embodiment of the present invention;

fig. 2 is a structural parameter diagram of the high torsion-resistant flexible conductor of each specification according to the embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	High-torsion-resistant flexible conductor	1	Strand strand
110	Outermost layer	11	Copper wire monofilament
				120	Second layer	130	Third layer
140	The fourth layer

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two groups, e.g., two groups, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any combination, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

Please refer to fig. 1, according to an aspect of the present invention, the utility model provides a high flexible conductor 100 of nai turning round, high flexible conductor 100 of nai turning round includes many groups strand 1, strand 1 includes the copper wire monofilament 11 of many bunches of hank, multiunit strand 1 is distributed and is the multiple twist in proper order around the central axis circumference of high flexible conductor 100 of nai turning round by the outside inlayer, the bunch pitch ratio of the copper wire monofilament 11 in strand 1 is 20 ~ 25, the multiple twist pitch ratio of the strand 1 of the outmost 110 of high flexible conductor 100 of nai turning round is 12 ~ 16, and by skin to inlayer, the multiple twist pitch ratio of every layer strand 1 increases gradually.

In the above embodiment, in the standard of the wire product, the smaller the pitch-diameter ratio of the wire, the tighter the twisting, the smaller the gap between single wires, but the too small pitch-diameter ratio may cause the loose combination of two adjacent layers of strand bundles; the larger the pitch-diameter ratio is, the larger the gap of the stranded wire is, the loose stranding is and the strand scattering is easy; in the stranded conductor, the actual length of each single wire is longer than the length of the conductor, the ratio of the actual length of the single wire to the length of the conductor is a stranding coefficient, the smaller the pitch-diameter ratio of the conductor is, the larger the stranding coefficient is, the more materials are used, the larger the direct current resistance is, and therefore, the smaller the pitch-diameter ratio is, the more the material is, the larger the pitch-diameter ratio is, the less the material is, the tighter the stranding is; the copper wire monofilaments 11 in each group of strand strands 1 are stranded with the strand pitch diameter ratio of 20-25, so that the strands are tightly stranded and are not easy to scatter, the resistance is low, the outer-layer complex strand pitch diameter is small among the groups of strand strands 1, the strands are tightly stranded, looseness caused by frequent bending and twisting under the severe environment of the lead can be effectively prevented, the inner-layer complex strand pitch diameter ratio is sequentially increased, materials are saved, and the conductivity of the conductor is improved. The embodiment can obviously improve the torsion resistance by setting the blending between different twisting pitch-diameter ratios, and has the advantages of tight combination, good torsion resistance and mechanical properties, and good conductivity. Specifically, the bundle lay ratio is preferably 22, and the complex lay ratio of the outermost conductor layer 110 is preferably 13; the complex twisting pitch diameter ratio of each strand 1 is sequentially increased by 4 from the outer layer to the inner layer, namely the complex twisting pitch diameter ratio of the second layer 120 from the outer layer to the inner layer is 16-20, the complex twisting pitch diameter ratio of the third layer 130 is 20-24, the complex twisting pitch diameter ratio of the fourth layer 140 is 24-28, and the complex twisting pitch diameter ratio is sequentially increased according to the specific number of layers.

In one embodiment, the highly torsion-resistant flexible conductor 100 has a nominal cross-sectional area of 70mm ² 、95mm ² 、120mm ² 、150mm ² 、185mm ² 、240mm ² 、300mm ² 、400mm ² One of them. As shown in fig. 2, the preferred arrangement and preferred twist-to-pitch ratio of the conductors with various nominal cross-sectional area specifications have the advantages of mature manufacturing process and high utilization rate. Specifically, the nominal cross-sectional area of the highly torsion-resistant flexible conductor 100 is 300mm ² Then, as shown in fig. 1, the number of layers of the plurality of sets of strand 1 is 4, from the inner layer to the outer layer, and the number of strands 1 in each layer is 3, 8, 15 and 21; the nominal cross-sectional area of the high torsion-resistant flexible conductor 100 is 240mm ² The number of the layers of the plurality of groups of strand wires 1 is 4, from the inner layer to the outer layer, and the number of the strand wires 1 in each layer is 1, 7, 12 and 18.

In an embodiment, the number of the copper wire monofilaments 11 of each bunch of strands 1 is 30, the diameter of each copper wire monofilament 11 is 0.50mm, the specification can be prevented from being changed and the vehicles can be frequently changed by improving the arrangement mode of the bunch of strands 1 and unifying the structure of the bunch of strands 1, the production efficiency can be improved, the waste can be reduced, the quality performance and the production efficiency can be effectively considered, and the cross section of each copper wire monofilament 11 is circular. It should be noted that the elongation at break of the 0.50mm copper wire monofilament 11 used in the traditional flexible conductor is not less than 20% according to the standard requirement, the actual production is not more than 25%, the use effect in the mobile cable is not ideal, the conductor wire breakage rate is high, the process requirement of the elongation at break of the copper wire monofilament is not less than 30%, the torsion resistance of the conductor can be further improved, and the wire breakage rate of the embodiment is less than 1.5% according to the third party test report, and the flexible conductor can be applied to cable products with severe use environments, such as wind power generation and the like.

In an embodiment, because the conductor that traditional flexible electric wire cable used all adopts the compound twisting mode that adjacent stranded layer bundle strand 1 transposition direction is opposite, if the cable twists reverse in the use repeatedly, cable conductor each strand 1 can aggravate owing to the transposition direction is different and drag, and copper line monofilament 11 is fragile, shortens product life, sets up the compound twisting direction of each strand 1 to be left direction, when being exerted the torsional moment, conductor structure can reliably remain stable, does not take place relative displacement between each stranded layer: because the twisting layers adopt the same twisting direction, the adjacent inner and outer twisting layers can be prevented from loosening to loosen the structure, the lead is prevented from being raised or broken, and the twisting resistance is further improved; the contact area between the copper wire monofilaments 11 can be increased in the same mode of the compound twisting direction, the contact resistance between the copper wire monofilaments 11 is reduced, and the conductivity is improved.

In one embodiment, the bundle-twisting direction of the copper wire monofilaments 11 in the bundle strand 1 is the right direction. The bundle twisting direction and the complex twisting direction are opposite, so that the whole structure of the conductor is more compact, and the mechanical performance is better.

In one embodiment, the high twist-resistant flexible conductor 100 is a type 5 soft copper conductor or a type 5 tin-plated soft copper conductor. This embodiment has the advantage of good softness properties.

According to another aspect of the present invention, the present invention further provides a cable, the cable comprises a sheath and the flexible conductor 100 with high torsion resistance, and the sheath wraps the flexible conductor 100 with high torsion resistance. Since the cable adopts all the technical solutions of all the above-mentioned embodiments of the high torsion-resistant flexible conductor 100, therefore, at least all the advantages brought by the technical solutions of the above embodiments are achieved, and are not described in detail herein.

The above is only the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all of which are in the utility model discloses a conceive, utilize the equivalent structure transform that the content of the specification and the attached drawings did, or directly/indirectly use all to include in other relevant technical fields the patent protection scope of the present invention.

Claims (10)

1. The high-twist-resistance flexible conductor is characterized by comprising a plurality of groups of strand strands, wherein the strand strands comprise a plurality of stranded copper wire monofilaments, the plurality of groups of strand strands are distributed around the circumference of the central axis of the high-twist-resistance flexible conductor from an inner layer to an outer layer and are sequentially and repeatedly stranded, the strand pitch diameter ratio of the copper wire monofilaments in the strand strands is 20-25, the complex stranded pitch diameter ratio of the strand strands on the outermost layer of the high-twist-resistance flexible conductor is 12-16, and the complex stranded pitch diameter ratio of each strand layer is gradually increased from the outer layer to the inner layer.

2. The soft, torsion-resistant conductor of claim 1 wherein the directions of lay of said strands of each layer are all left-hand.

3. The soft conductor with high torsion resistance as claimed in claim 2, wherein the strand direction of the copper wire monofilaments in the strand bundle is right direction.

4. The high torsion-resistant flexible conductor in accordance with claim 1, wherein the high torsion-resistant flexible conductor has a nominal cross-sectional area of 70mm ² 、95mm ² 、120mm ² 、150mm ² 、185mm ² 、240mm ² 、300mm ² 、400mm ² One of them.

5. The soft, highly torsion-resistant conductor as claimed in claim 4, wherein 30 copper wire filaments are provided for each of said strands, and said copper wire filaments have a diameter of 0.50mm.

6. The high torsion-resistant flexible conductor in accordance with claim 4, wherein the high torsion-resistant flexible conductor has a nominal cross-sectional area of 300mm ² The number of the layers of the plurality of groups of strand wires is 4, the number of the strand wires in each layer is respectively 3, 8, 15 and 21 from the inner layer to the outer layer.

7. The highly torsion-resistant flexible conductor according to claim 4, the nominal sectional area of the high torsion-resistant flexible conductor is 240mm ² The number of the groups of strand bundles is 4, the strand bundles are arranged from the inner layer to the outer layer, and the number of the strand bundles in each layer is 1, 7, 12 and 18.

8. The highly torsion-resistant flexible conductor according to any one of claims 1 to 7, the high torsion-resistant soft conductor is a 5 th soft copper conductor or a 5 th tinned soft copper conductor.

9. The soft conductor with high twisting resistance as claimed in any one of claims 1 to 7, wherein the twist lay ratio of each strand increases by 4 from the outer layer to the inner layer.

10. A cable comprising a sheath and the high torsion-resistant flexible conductor of any one of claims 1 to 9, wherein the sheath surrounds the high torsion-resistant flexible conductor.

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