CN219418539U - High-elasticity extrusion-resistant composite cable - Google Patents
High-elasticity extrusion-resistant composite cable Download PDFInfo
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- CN219418539U CN219418539U CN202223137232.0U CN202223137232U CN219418539U CN 219418539 U CN219418539 U CN 219418539U CN 202223137232 U CN202223137232 U CN 202223137232U CN 219418539 U CN219418539 U CN 219418539U
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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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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model discloses a high-elasticity extrusion-resistant composite cable, which belongs to the technical field of cables and comprises a central high-elasticity mechanism, wherein the central high-elasticity mechanism comprises a central elastic sleeve and an inner sleeve, a nonmetallic reinforcing piece is arranged in an inner cavity of the inner sleeve, two arc-shaped limiting sleeves formed by injection molding are arranged on the outer wall of the central elastic sleeve, three copper core conductors and three elastic separation solid tubes are arranged in each arc-shaped limiting sleeve, and an extrusion-molded composite compression-resistant mechanism is arranged outside each arc-shaped limiting sleeve.
Description
Technical Field
The utility model mainly relates to the technical field of cables, in particular to a high-elasticity extrusion-resistant composite cable.
Background
The cable is typically twisted from several wires or groups of wires (at least two wires per group), like ropes, each group of wires being insulated from each other and often twisted around a center, the entire outer surface being covered with a highly insulating covering, the cable having the characteristics of inner power and outer insulation, the cable having power cables, control cables, compensation cables, shielding cables, high temperature cables, computer cables, signal cables, coaxial cables, fire resistant cables, marine cables, mining cables, aluminum alloy cables, etc.
With the improvement of the requirement of people on the compressive capacity of the cable, the anti-extrusion cable is widely applied and has obvious effects, and in recent years, departments such as buildings, traffic and the like are required to adopt compressive cables with higher requirements on areas such as subways, light rails, railways, large squares and the like.
For the present cable, for example, in the technical structure of application number 201720964708.8 application, including the sinle silk body, sinle silk body outside is equipped with filling layer, band layer, polyethylene structural layer, insulating layer and polyvinyl chloride structural layer from inside to outside in proper order, be equipped with the support bar between the sinle silk body, be equipped with the draw-in groove corresponding with the sinle silk body on the support bar, sinle silk body joint is in the draw-in groove, and this structure is through the support bar that is located cable center and erect improves the compressive buffer capacity of cable, but in areas such as subway, light rail, railway, large-scale square, along with building structure's under more and more complicated, diversified, this kind of compressive cable has failed to satisfy, and when receiving external stronger pressure, only the compressive buffer capacity that the support bar deformation brought is weaker, and the linear body in the cable is easy to be ectopic, causes the condition of mutual extrusion damage.
Disclosure of Invention
The technical scheme of the utility model aims at the technical problem that the prior art is too single, provides a solution which is obviously different from the prior art, and particularly mainly provides a high-elasticity extrusion-resistant composite cable which is used for solving the technical problem that the internal conductors are extruded and damaged mutually due to the fact that the internal conductors are ectopic when the internal conductors are subjected to strong external pressure in the prior art.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a high elasticity anti extrusion composite cable, includes central high elasticity mechanism, central high elasticity mechanism includes central elastic sleeve and is located central elastic sleeve's axis position interior sleeve pipe, just equidistant a plurality of elastic support that encircle being provided with injection moulding on the interior sleeve pipe outer wall, the inner chamber of interior sleeve pipe is provided with nonmetal reinforcement, central elastic sleeve pipe outer wall is provided with two injection moulding's arc spacing sleeve pipes, every all be provided with three copper core conductor and three elasticity separation solid tube in the arc spacing sleeve pipe, and every the mutual staggered arrangement between copper core conductor and the elasticity separation solid tube in the arc spacing sleeve pipe, two the outer joint of arc spacing sleeve pipe is provided with extrusion moulding's compound compression mechanism;
the composite compression-resistant mechanism comprises a polyester film layer, the polyester film layer wraps two arc-shaped limiting sleeves, a fire-resistant mica tape formed by wrapping is arranged on the polyester film layer, an extrusion-molded nitrile elastic compression-resistant layer is arranged on the fire-resistant mica tape, a steel tape armor is arranged on the nitrile elastic compression-resistant layer, and an extrusion-molded halogen-free low-smoke flame-retardant protective sleeve is arranged on the outer wall of the steel tape armor.
Preferably, the thickness of the polyester film layer is the same as that of the fire-resistant mica tape, and the thickness of the polyester film layer and the fire-resistant mica tape is 1cm-1.3cm.
Preferably, the thickness of the nitrile elastic compression layer is the same as that of the steel tape armor, and the thickness of the nitrile elastic compression layer and the steel tape armor is 0.9cm-1.2cm.
Preferably, the thickness of the halogen-free low-smoke flame-retardant protective sleeve is equal to the sum of the thicknesses of the polyester film layer, the fire-resistant mica tape, the nitrile elastic compression layer and the steel tape armor.
Preferably, the gap position of each arc-shaped limiting sleeve inner cavity is provided with an elastic filling rope.
Preferably, each copper core conductor is formed by stranding copper wire bundles.
Preferably, each copper core conductor is provided with a crosslinked polyethylene protective sleeve, and each crosslinked polyethylene protective sleeve is provided with an extrusion-molded polyimide layer.
Preferably, an elastic reset strip is arranged between every two adjacent elastic brackets.
Compared with the prior art, the utility model has the beneficial effects that:
(1) According to the utility model, through the arranged central elastic sleeve, the inner sleeve, the elastic support, the nonmetallic reinforcing parts and the elastic resetting strip, the extrusion resistance of the cable is improved at the central axis position of the cable, the extrusion resistance of the cable is further improved from the outer wrapping layer position of the cable by the mutual cooperation between the butyronitrile elastic compression layer and the halogen-free low-smoke flame-retardant protective sleeve in the composite compression mechanism, and under the limitation of the arc-shaped limiting sleeve, the elastic filling rope and the elastic separation solid pipe, the copper core conductor in the cable can be quickly elastically reset after being extruded, the copper core conductor in the cable is difficult to be ectopic, and the situation that the copper core conductor is directly extruded in contact with each other and damaged when being subjected to external force is effectively avoided.
(2) The utility model realizes the protection of conductors by the crosslinked polyethylene protective sleeve and the polyimide layer which are arranged outside the copper core conductor, the polyimide material is one of organic polymer materials with optimal comprehensive performance, the polyimide material has high temperature resistance reaching more than 400 ℃, long-term use temperature range of-200-300 ℃, no obvious melting point, high insulation performance, dielectric constant of 4.0 at 10 Hz, dielectric loss of only 0.004-0.007, belongs to F-H level insulation, and wraps an arc limiting tube by a polyester film layer mainly through bundling effect, has certain insulation effect, also improves heat resistance, ensures that the cable has compact and non-loose structure and is insulated during extrusion.
The utility model will be explained in detail below with reference to the drawings and specific embodiments.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of a cable of the present utility model;
FIG. 3 is a schematic cross-sectional view of a central highly elastic mechanism of the present utility model;
FIG. 4 is a schematic cross-sectional view of the composite compression mechanism of the present utility model.
Description of the drawings: 1. a central high-elasticity mechanism; 11. a central elastic sleeve; 12. an inner sleeve; 121. an elastic support; 13. a non-metallic reinforcement; 14. an elastic reset bar; 15. an arc-shaped limit sleeve; 16. a copper core conductor; 161. a crosslinked polyethylene protective jacket; 162. a polyimide layer; 17. elastically separating the solid tubes; 18. an elastic filler rope; 2. a composite compression-resistant mechanism; 21. a polyester film layer; 22. a fire resistant mica tape; 23. a nitrile elastic compression layer; 24. steel tape armoring; 25. halogen-free low-smoke flame-retardant protective sleeve.
Detailed Description
In order that the utility model may be more fully understood, a more particular description of the utility model will be rendered by reference to the appended drawings, in which several embodiments of the utility model are illustrated, but which may be embodied in different forms and are not limited to the embodiments described herein, which are, on the contrary, provided to provide a more thorough and complete disclosure of the utility model.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly connected to one of ordinary skill in the art to which this utility model belongs, and the knowledge of terms used in the description of this utility model herein for the purpose of describing particular embodiments is not intended to limit the utility model, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-4, a high-elasticity extrusion-resistant composite cable is disclosed, which includes a central high-elasticity mechanism 1, the central high-elasticity mechanism 1 includes a central elastic sleeve 11 and an inner sleeve 12 located at a central axis position of the central elastic sleeve 11, a plurality of injection molded elastic supports 121 are equidistantly and circumferentially arranged on an outer wall of the inner sleeve 12, a nonmetallic reinforcing member 13 is arranged in an inner cavity of the inner sleeve 12, two injection molded arc-shaped limiting sleeves 15 are arranged on an outer wall of the central elastic sleeve 11, three copper core conductors 16 and three elastic separation solid tubes 17 are arranged in each arc-shaped limiting sleeve 15, the copper core conductors 16 and the elastic separation solid tubes 17 in each arc-shaped limiting sleeve 15 are staggered with each other, and an extrusion-molded composite compression-resistant mechanism 2 is arranged outside the two arc-shaped limiting sleeves 15; the composite compression-resistant mechanism 2 comprises a polyester film layer 21, the polyester film layer 21 wraps two arc-shaped limiting sleeves 15, a fire-resistant mica tape 22 formed by wrapping is arranged on the polyester film layer 21, an extrusion-molded nitrile elastic compression-resistant layer 23 is arranged on the fire-resistant mica tape 22, a steel tape armor 24 is arranged on the nitrile elastic compression-resistant layer 23, and an extrusion-molded halogen-free low-smoke flame-retardant protective sleeve 25 is arranged on the outer wall of the steel tape armor 24.
The structure realizes that the extrusion resistance of the cable is improved from the central axis and the outer wrapping layer of the cable through the mutual coordination between the central high-elasticity mechanism 1 and the composite compression-resistant mechanism 2, so that the copper core conductor 16 in the cable can be quickly and elastically reset after being extruded, the copper core conductor 16 inside the cable is not easy to be ectopic, the situation that extrusion damage occurs between the copper core conductors 16 when external force is applied is effectively avoided, the material cost is lower, the extrusion molding process is simple, and the production is easy;
in the second embodiment, please refer to fig. 2 and 3, the space position of the inner cavity of each arc-shaped limiting sleeve 15 is provided with an elastic filling rope 18, the filling of the space position is realized by the elastic filling ropes 18, the displacement of the copper core conductors 16 is prevented, each copper core conductor 16 is formed by stranding copper wire bundles, a cross-linked polyethylene protective sleeve 161 is arranged outside each copper core conductor 16, each cross-linked polyethylene protective sleeve 161 is provided with an extrusion-molded polyimide layer 162, the stability, insulation and high temperature resistance of the copper core conductor 16 are improved by the polyimide layer 162, an elastic reset strip 14 is arranged between every two adjacent elastic supports 121, and the reinforcement of the elastic compressive resistance of the central axis position of the cable is realized by the elastic reset strip 14.
In the third embodiment, please refer to fig. 1 and 3, the thickness of the polyester film layer 21 is the same as that of the fire-resistant mica tape 22, the thickness of the polyester film layer 21 and the thickness of the fire-resistant mica tape 22 are 1cm-1.3cm, the fire-resistant mica tape 22 is a high-performance mica insulation product, the fire-resistant mica tape has excellent high temperature resistance and combustion resistance, the powder mica tape has good flexibility in normal state, and is suitable for the main fire-resistant insulation layer in various cables, no volatilization of harmful smoke exists basically when the fire burns, the bundling of the arc-shaped limiting sleeve 15 is realized through the polyester film layer 21, the thickness of the nitrile elastic compression layer 23 and the thickness of the steel tape armor 24 are the same, the thickness of the nitrile elastic compression layer 23 and the thickness of the steel tape armor 24 are 0.9cm-1.2cm, the steel tape armor 24 is in bolt type, the fire-resistant mica tape armor 24 can be naturally bent, the thickness of the halogen-free low smoke flame-resistant flame-retardant protecting sleeve 25 is equal to the sum of the thickness of the polyester film layer 21, the fire-resistant mica tape 22, the nitrile elastic layer 23 and the steel tape armor 24 when the halogen-free low smoke-resistant flame-retardant protecting sleeve is burnt, and the halogen-free smoke is free, and the smoke-free smoke is released under the condition of the low smoke-resistant cable.
While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the utility model is not limited to the embodiments described above, but is intended to be within the scope of the utility model, as long as such insubstantial modifications are made by the method concepts and technical solutions of the utility model, or the concepts and technical solutions of the utility model are applied directly to other occasions without any modifications.
Claims (8)
1. The utility model provides a high elasticity anti extrusion composite cable, includes central high elasticity mechanism (1), its characterized in that, central high elasticity mechanism (1) include central elastic sleeve (11) and be located interior sleeve pipe (12) of central elastic sleeve pipe (11) axis position, just equidistant a plurality of elastic support (121) that encircle being provided with injection moulding on interior sleeve pipe (12) outer wall, the inner chamber of interior sleeve pipe (12) is provided with nonmetal reinforcement (13), central elastic sleeve pipe (11) outer wall is provided with two injection moulding's arc spacing sleeve pipe (15), every all be provided with three copper core conductor (16) and three elasticity separation solid tube (17) in the arc spacing sleeve pipe (15), and each copper core conductor (16) and elasticity separation solid tube (17) in the arc spacing sleeve pipe (15) are crisscross each other arranged, two the arc spacing sleeve pipe (15) are provided with extrusion's composite mechanism (2) outward jointly;
the composite compression-resistant mechanism (2) comprises a polyester film layer (21), the polyester film layer (21) wraps two arc limiting sleeves (15), a fire-resistant mica tape (22) formed by wrapping is arranged on the polyester film layer (21), an extrusion-molded nitrile elastic compression-resistant layer (23) is arranged on the fire-resistant mica tape (22), a steel tape armor (24) is arranged on the nitrile elastic compression-resistant layer (23), and an extrusion-molded halogen-free low-smoke flame-retardant protective sleeve (25) is arranged on the outer wall of the steel tape armor (24).
2. The high-elasticity extrusion-resistant composite cable according to claim 1, wherein the polyester film layer (21) and the fire-resistant mica tape (22) have the same thickness, and the thickness of the polyester film layer (21) and the fire-resistant mica tape (22) is 1cm to 1.3cm.
3. A highly elastic extrusion-resistant composite cable according to claim 1, characterized in that the nitrile elastic compression layer (23) and the steel tape armor (24) have the same thickness, and the nitrile elastic compression layer (23) and the steel tape armor (24) have a thickness of 0.9cm-1.2cm.
4. The high-elasticity extrusion-resistant composite cable according to claim 1, wherein the thickness of the halogen-free low-smoke flame-retardant protective sheath (25) is equal to the sum of the thicknesses of the polyester film layer (21), the fire-resistant mica tape (22), the nitrile elastic compression-resistant layer (23) and the steel tape armor (24).
5. A high-elasticity anti-extrusion composite cable according to claim 1, wherein the void position of the inner cavity of each arc-shaped limit sleeve (15) is provided with an elastic filling rope (18).
6. A highly elastic extrusion-resistant composite cable according to claim 1, wherein each of said copper core conductors (16) is stranded from a bundle of copper wires.
7. The high-elasticity extrusion-resistant composite cable according to claim 6, wherein each copper core conductor (16) is provided with a crosslinked polyethylene protective sheath (161) on the outside, and each crosslinked polyethylene protective sheath (161) is provided with an extrusion-molded polyimide layer (162).
8. A high-elasticity extrusion-resistant composite cable according to claim 1, wherein an elastic return strip (14) is arranged between each two adjacent elastic supports (121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223137232.0U CN219418539U (en) | 2022-11-25 | 2022-11-25 | High-elasticity extrusion-resistant composite cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223137232.0U CN219418539U (en) | 2022-11-25 | 2022-11-25 | High-elasticity extrusion-resistant composite cable |
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| Publication Number | Publication Date |
|---|---|
| CN219418539U true CN219418539U (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223137232.0U Active CN219418539U (en) | 2022-11-25 | 2022-11-25 | High-elasticity extrusion-resistant composite cable |
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| Country | Link |
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| CN (1) | CN219418539U (en) |
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2022
- 2022-11-25 CN CN202223137232.0U patent/CN219418539U/en active Active
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