CN211350142U - Flexible nuclear-resistant reinforced cable - Google Patents
Flexible nuclear-resistant reinforced cable Download PDFInfo
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- CN211350142U CN211350142U CN201922073428.XU CN201922073428U CN211350142U CN 211350142 U CN211350142 U CN 211350142U CN 201922073428 U CN201922073428 U CN 201922073428U CN 211350142 U CN211350142 U CN 211350142U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model relates to a flexible anti nuclear reinforcement cable, from inside to outside including central skeleton, cable core unit, polyester around covering, metallic shield, polyurethane restrictive coating, its characterized in that: the flexible anti nuclear reinforced cable is still including setting up the central skeleton that puts at the cable central point, central skeleton is thermoplastic elastomer material and keeps apart the cable core unit respectively in around the covering in the space, the utility model provides a flexible anti nuclear reinforced cable to solve current anti nuclear electromagnetic pulse cable compliance not good, the crooked position atress inequality of cable leads to the cable conductor fracture to break away from, can't satisfy the problem to the anti electromagnetic pulse cable's of softness user demand in the nuclear weapon.
Description
Technical Field
The utility model belongs to the cable field, concretely relates to anti nuclear electromagnetic pulse consolidates cable field.
Background
The existing flexible anti-electromagnetic pulse cable mainly comprises a plurality of layers of metal woven and composite film lapping shields, and the flexibility of the whole cable is realized by improving the flexibility of a shielding material, for example, the shielding material adopts flexible conductive cloth or a metal wire woven structure. The core wires of the cable are mainly arranged regularly, the core wires of all layers are mutually extruded in the bending process, and the core wire of the inner layer can be extruded by one circle of core wires at the outer side. During bending in a severe field use environment, the cable is subjected to an extremely small bending radius, the bending times can reach thousands of times, flexibility of the cable is a great challenge, the cable can last for a long time under a large bending angle, and if the bending stress or the bending radius exceeds the use range for a long time, the cable can be broken during connection, so that the whole cable loses function. Therefore, the normal cable core structure of the existing flexible electromagnetic pulse resistant cable seriously reduces the flexibility of the cable and is not beneficial to being used in the field extreme bending environment.
In addition, the regular cabling structure of the conventional electromagnetic pulse resistant cable results in poor flexibility. FIG. 1 is a prior art heart yearn stranding structure chart, and inside heart yearn adopts the normal stranding structure of 1+6+12+18+ … …, and this kind of cable core structure has fabulous stability, but because the inside insulating heart yearn that is densely covered of cable core, lead to the cable bending process, extrude each other between the inside each heart yearn of cable core, no stress release space, this causes the influence to the compliance of whole cable, can't satisfy the user demand to soft anti-electromagnetic pulse cable in the nuclear weapon.
In order to meet the use requirements of the field electromagnetic pulse resistant cable, the flexible electromagnetic pulse resistant cable is urgently needed to be made from the aspects of materials, cable structures and the like, and the field environment performance, flexibility and high-reliability use performance of the flexible electromagnetic pulse resistant cable are achieved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that prior art exists is overcome, provides a flexible anti nuclear reinforcement cable to solve current anti nuclear electromagnetic pulse cable compliance not good, the uneven cable conductor fracture that leads to of cable bending part atress breaks away from, can't satisfy the problem to the anti electromagnetic pulse cable's of softness user demand in the nuclear weapon.
For solving the technical problem, the technical solution of the utility model is realized as follows:
the utility model provides a flexible anti nuclear reinforced cable, includes from inside to outside that central skeleton 2, cable core unit 1, polyester wind covering 3, metallic shield layer, polyurethane restrictive coating 8, its characterized in that: the flexible anti-nuclear reinforced cable center framework 2 is arranged at the center of the cable, the center framework 2 is made of thermoplastic elastomer materials and isolates the cable core units 1 in the wrapping space of the wrapping layer 3 respectively.
Further, the central framework 2 is made of TPEE material, TPU material or rubber material.
Furthermore, the number of the cable core units 1 is four, the cross section of the central framework 2 is cross-shaped, and the cable core units 1 are respectively arranged at four corners of the central framework 2 and are isolated.
Further, cable core unit 1 quantity is eight and 2 cross-sections of central skeleton are rice style of calligraphy structures.
Further, the wrapping layer 3 is made of a transparent polyester tape material with the thickness of 0.03 mm.
Further, the metal shielding layer is a first silver-plated copper braid layer 4, a copper-nickel alloy cloth tape wrapping layer 5, a nickel-iron alloy tape wrapping layer 6 and a second silver-plated copper braid layer 7 from inside to outside in sequence.
The utility model discloses following beneficial effect can be brought:
the utility model discloses a cable core structure and material to soft type cable design, make the bending stress that anti-electromagnetic pulse cable received at crooked in-process shift to the inside packing of cable and cable shielding position, prevent that the crooked position atress of cable inequality leads to the cable conductor fracture to break away from, have effectively improved anti-electromagnetic pulse cable's use reliability.
The utility model discloses an adopt split-integrated technique, be soft anti-electromagnetic pulse cable split into two kinds of different cables of soft cable and anti-electromagnetic pulse cable, wherein the realization of soft cable mainly reflects on the structural style of cable core, anti-electromagnetic pulse cable's realization mainly reflects structurally at the shielding layer, synthesize the integration as soft anti-electromagnetic pulse cable with the main solution of two kinds of cables, and through suitable processing technology, guarantee that the cable has softness performance and anti-electromagnetic pulse performance concurrently, the relatively poor defect of ordinary anti-electromagnetic pulse cable compliance has been solved.
Through the mechanical properties of studying various materials, select suitable soft electromagnetic pulse cable material to design the soft anti electromagnetic pulse cable of novel material, the utility model discloses a softness requirement, the crooked requirement that ordinary anti electromagnetic pulse cable can't satisfy have been solved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of a conventional nuclear-resistant electromagnetic pulse cable;
FIG. 2 is a schematic view of the central skeleton structure of the flexible nuclear-resistant reinforced cable of the present invention;
fig. 3 is a schematic structural view of the flexible nuclear-resistant reinforced cable of the present invention;
FIG. 4 is a flow chart of a method for manufacturing the flexible nuclear-resistant reinforced cable of the present invention;
in the figure:
1 core wire 2 central framework 3 lapping layer
4 first silver-plated copper braided layer 5 copper-nickel alloy strap wrapping layer
6 ferronickel alloy band is around 7 second silver-plated copper weaving layers of covering
8 polyurethane sheath layer
Detailed Description
To further explain the technical means, creation features, achievement objectives and functions of the present invention, it is easy to understand and understand that the following detailed description, with reference to the accompanying drawings and preferred embodiments, describes the specific implementation, structure, features and functions of a flexible anti-nuclear reinforced cable according to the present invention.
Example 1
Like fig. 3, a flexible anti nuclear reinforcement cable includes from inside to outside central skeleton 2, cable core unit 1, polyester around covering 3, shielding layer, polyurethane restrictive coating 8, and central skeleton 2 is the TPEE material and keeps apart cable core unit 1 respectively in around covering 3 around the package space. The number of cable core units 1 is four, and 2 cross-sections of center skeleton are cross, and 2 four corners of center skeleton are arranged respectively in cable core unit 1 and are kept apart, adopt the transparent polyester tape material that thickness is 0.03mm around covering 3, and the shielding layer is first silvering copper weaving layer 4, copper-nickel alloy strap from inside to outside in proper order around covering 5, ferronickel alloy area around covering 6, second silvering copper weaving layer 7. Adopt multilayer shielding to shield electromagnetic pulse, through improving intensity, corrosion-resistant and pyroelectricity nature around the package copper-nickel alloy strap to reduce resistivity temperature coefficient. And additionally adding a layer of low-frequency soft magnetic material nickel-iron alloy belt with high magnetic permeability and low coercive force.
Fig. 2 is the flexibility center skeleton structure chart of novel flexible anti nuclear reinforcement cable, and center skeleton adopts the TPEE material, and the long-term operating temperature of this kind of material is about 105 degrees, and to playing support and fixed action this kind of material can satisfy anti nuclear reinforcement cable's operation requirement completely, and the compliance of this kind of material is fine moreover, can kick-back to original state under very little bending radius, and the performance influence to the conductor falls to minimumly. The cable is receiving the exogenic action, extrudeing each other between the heart yearn, through the direct contact of central skeleton with the heart yearn for the atress position is used in on the skeleton, realizes the skeleton atress, makes the heart yearn warp under the minimum.
The dimensional requirements of each layer in the novel flexible electromagnetic pulse resistant cable are shown in table 1. Cabling, weaving, lapping, weaving and extruding are carried out on each part in the interior in sequence according to the structure of figure 3 and the sequence of figure 4:
the method comprises the following steps: manufacturing a cable core unit, twisting the prepared thirteen-core insulated core wires, wherein the twisted structure is that the inner part is 3 cores and the outer part is 10 cores, synchronously wrapping a polyester film wrapping tape on the outer layer after twisting to manufacture the cable core unit, and the outer diameter of the manufactured cable core unit is about 4.2 mm;
step two: and (3) assembling cabling, namely symmetrically arranging cable cores of the cable cores on a cabling machine, arranging the cable coils of the central framework at the central position of the cabling machine, then distributing the cable cores at four corners of the central framework for assembling cabling, and wrapping a transparent polyester tape behind the assembled cabling to ensure the stability of the cable cores.
Step three: processing the shielding layer, namely weaving silver-plated copper wires outside the cable core by adopting a 24-spindle high-speed weaving machine, wherein the weaving density is 95%; then, wrapping a copper-nickel alloy cloth belt and a nickel-iron alloy belt on a wrapping machine, wherein the wrapping of the copper-nickel alloy cloth belt and the alloy belt adopts a 50% overlapping form; and then weaving silver-plated copper wires outside the nickel-iron alloy belt by adopting a 24-spindle high-speed weaving machine, wherein the weaving density is not less than 97%.
Step four: extruding the outer sheath, extruding a layer of outer sheath made of polyurethane thermoplastic elastomer outside the shielding layer, and preparing the cable with the outer diameter of about 14.4mm and the wall thickness of the outer sheath of about 1.2mm by adopting a sleeve type extruding die.
Wherein, the insulated core wire in the step one is prepared by the following steps:
step 1.1: selecting a conductor, namely selecting a stranded silver-plated copper stranded wire as the conductor, wherein the stranding pitch diameter ratio is about 12, and the outer diameter of the conductor is about 0.60 mm;
step 1.2: and (3) insulating extrusion molding, namely adopting the silver-plated copper stranded wire prepared in the step 1.1 as a conductor, extruding silicon rubber outside the stranded conductor and vulcanizing to prepare an insulating core wire with the outer diameter of about 0.90 mm.
The outer diameter of the cabling unit is not more than 4.2 mm.
Make flexible cable through technologies such as assembly cable, weave, around package, crowded sheath, finished product cable structure size: not greater than 15.2 mm. The structural dimensions of each part of the cable are shown in table 1:
TABLE 1 structural dimensions of the various parts of the cable
Description of the technical effects and design principles of embodiment 1:
1. cable core unit and cable core support design
According to the requirement of the soft performance of the soft cable, a proper cable core unit structure combination is designed for realizing the use of the core wire under a specific bending condition. And a layer of silicon rubber is extruded outside the conductor, so that the stability and the flexibility of the conductor are improved. The core wire adds compliance cross skeleton at the stranding in-process, makes the cable conductor stress distribution on cross skeleton at the bending in-process to reduce the bending stress of core wire, can resume the circularity after the bending, four directions of center skeleton add respectively that a center layer is three cores, the skin is the core wire transposition structure of ten cores, as shown in fig. 2.
The central framework adopts thermoplastic polyester elastomer flexible material (TPEE), which has high flexural modulus and does not have over-hardness phenomenon at low temperature. The structure of the cable solves the problem of influence of core wires of the anti-nuclear reinforced cable and a common cabling structure on flexibility to a certain extent, so that the structure of the cable is more stable in the bending process.
Change traditional anti electromagnetic pulse cable core and add packing strip or formal heart yearn compound mode at the center, this soft anti nuclear reinforcement cable adopts and cuts apart into four little cable parts to the heart yearn and winds the package, the rethread adds central skeleton to the cable center, make the heart yearn of four directions of central skeleton when receiving external force and extrusion, provide the flexible space for the heart yearn, the stress point is used in on the soft skeleton at center, softness and recoverability through central skeleton, even the cable also can resume the former state in very little bending radius. The combination has smaller bending radius to a certain extent, and is convenient to use in the field under complex working condition environment.
2. Insulation material design
The innovative conductor of this patent extrudes one deck silicon rubber outward and insulates and provide the bendability for the heart yearn for the conductor, and the bending property and the bending radius of silicon rubber compare in ordinary anti-electromagnetic pulse cable core insulating material more have the advantage. The silicon rubber has high temperature resistance, can meet the relevant temperature resistance requirements of cables, has excellent insulating property, and very good corona resistance and arc resistance, and has better flexibility of core wires and reduced influence of bending on leads by resisting extrusion molding of the silicon rubber on electromagnetic pulse cable conductors.
The cable is connected to corresponding equipment, the flexibility of the cable is tested, the length of the cable is 1.5 m, the cable is subjected to cable counterweight, the counterweight weight is 25 times of the self cable weight, the cable can recover 80% of the original state after counterweight for 24 hours, and the cable is insulated well. The bending performance of the cable is tested, after the cable is bent 3000 times, the electrical performance of each part in the cable is intact, and the electromagnetic pulse resistance can still meet the requirement; and the postures of all parts of the cable are good, and the actual use requirements are completely met.
Example 2
On the basis of the embodiment 1, the central framework 2 is replaced by TPU material, the number of the cable core units 1 is eight, the cross section of the central framework 2 is of a structure shaped like a Chinese character 'mi', and the cable core units 1 are respectively and independently separated by the Chinese character 'mi'. The preparation steps are also adjusted on the basis of the example 1:
the method comprises the following steps: and manufacturing a cable core unit, twisting the prepared thirteen-core insulating core wires, wherein the twisted structure is that the inside is 3 cores and the outside is 10 cores, synchronously wrapping a polyester film wrapping tape on the outer layer after twisting to manufacture the cable core unit, and the outer diameter of the manufactured cable core unit is about 4.2 mm.
Step two: and (3) assembling cabling, namely symmetrically arranging the cable drums of the cable core units on a cabling machine, arranging the cable drums of the central framework at the central position of the cabling machine, then distributing the cable core units at each corner of the central framework for assembling cabling, and wrapping a transparent polyester tape behind the assembled cabling to ensure the stability of the cable core.
Step three: processing the shielding layer, namely weaving silver-plated copper wires outside the cable core by adopting a 24-spindle high-speed weaving machine, wherein the weaving density is 97%; then, wrapping a copper-nickel alloy cloth belt and a nickel-iron alloy belt on a wrapping machine, wherein the wrapping of the copper-nickel alloy cloth belt and the alloy belt adopts a 50% overlapping form; and then weaving silver-plated copper wires outside the nickel-iron alloy belt by adopting a 24-spindle high-speed weaving machine, wherein the weaving density is not less than 97%.
Step four: extruding the outer sheath, extruding a layer of outer sheath made of polyurethane thermoplastic elastomer outside the shielding layer, and preparing the cable with the outer diameter of about 20.8mm and the wall thickness of the outer sheath of about 1.4mm by adopting a sleeve type extruding die.
Further, the insulated core wire in the step one is prepared by the following steps:
step 1.1: selecting a conductor, namely selecting a stranded silver-plated copper stranded wire as the conductor, wherein the stranding pitch diameter ratio is about 12, and the outer diameter of the conductor is about 0.60 mm;
step 1.2: and (3) insulating extrusion molding, namely adopting the silver-plated copper stranded wire prepared in the step 1.1 as a conductor, extruding silicon rubber outside the stranded conductor and vulcanizing to prepare an insulating core wire with the outer diameter of about 0.90 mm.
Through test detection, the novel flexible electromagnetic pulse resistant cable is bent 3000 times under the bending radius of 10 times of the outer diameter of the novel flexible electromagnetic pulse resistant cable, the performance of the cable is not obviously changed in all aspects, and the use requirement of the cable is met.
Example 3
On the basis of the embodiment 1, the central framework 2 is replaced by a rubber material, and the cable is bent 3000 times through experimental detection, so that the performance of the cable is not obviously changed in all aspects, and the use requirement of the cable is met.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a flexible anti nuclear reinforced cable, includes from inside to outside central skeleton (2), cable core unit (1), polyester around covering (3), metallic shield, polyurethane restrictive coating (8), its characterized in that: the flexible anti-nuclear reinforced cable center framework (2) is arranged at the center of the cable, the center framework (2) is made of thermoplastic elastomer materials and isolates cable core units (1) respectively in a wrapping space around a covering (3).
2. The flexible, nuclear-resistant reinforced cable of claim 1, wherein: the central framework (2) is made of TPEE material or TPU material.
3. The flexible, nuclear-resistant reinforced cable of claim 1, wherein: the cable core unit (1) quantity is four, center skeleton (2) cross-section is the cross, cable core unit (1) is arranged in respectively center skeleton (2) four corners is kept apart.
4. The flexible nuclear-resistant reinforced cable according to claim 1, 2 or 3, wherein: the cable core units (1) are eight in number, and the cross section of the central framework (2) is of a structure shaped like a Chinese character 'mi'.
5. The flexible nuclear-resistant reinforced cable according to claim 1, 2 or 3, wherein: the wrapping layer (3) is made of a transparent polyester tape material with the thickness of 0.03 mm.
6. The flexible nuclear-resistant reinforced cable according to claim 1, 2 or 3, wherein: the metal shielding layer is sequentially a first silver-plated copper braid layer (4), a copper-nickel alloy woven tape wrapping layer (5), a nickel-iron alloy woven tape wrapping layer (6) and a second silver-plated copper braid layer (7) from inside to outside.
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| CN201922073428.XU CN211350142U (en) | 2019-11-27 | 2019-11-27 | Flexible nuclear-resistant reinforced cable |
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| CN110993162A (en) * | 2019-11-27 | 2020-04-10 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | Flexible nuclear-resistant reinforced cable and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110993162A (en) * | 2019-11-27 | 2020-04-10 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | Flexible nuclear-resistant reinforced cable and manufacturing method thereof |
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