CN212181963U - High-shielding soft special composite cable - Google Patents
High-shielding soft special composite cable Download PDFInfo
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- CN212181963U CN212181963U CN202021217558.2U CN202021217558U CN212181963U CN 212181963 U CN212181963 U CN 212181963U CN 202021217558 U CN202021217558 U CN 202021217558U CN 212181963 U CN212181963 U CN 212181963U
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Abstract
The utility model discloses a high shielding flexible type special type composite cable, including the cable core, the cable core includes signal unit and the control unit, and signal unit includes a plurality of double-deck shielded wires, and double-deck shielded wire includes the shielding sinle silk and wraps up the three-layer branch insulating band layer outside the shielding sinle silk in proper order, is equipped with the branch shielding layer between the adjacent branch insulating band layer, and the control unit includes a plurality of control lines, and a plurality of control lines and a plurality of double-deck shielded wire transposition form the cable core; the total insulating belting layer is wrapped outside the cable core; the total shielding layer is wrapped outside the total insulating wrapping layer; the outer protective layer wraps the total shielding layer. The utility model combines the signal cable and the control cable, thereby reducing the installation workload and the occupied space; the outer diameter of the cable is effectively reduced by twisting the double-layer shielding wire and the control wire; the two shielding layers are isolated by the insulating belting layer, so that the leakage current between the shielding layers and between the shielding layers of the line pairs is effectively reduced, and the inhibition capability of mutual interference between the line pairs is effectively enhanced.
Description
Technical Field
The utility model relates to a cable construction technical field, concretely relates to high shielding flexible type special type composite cable.
Background
Along with the development of motor train units and high-speed railways, the safety awareness of people is gradually improved, and higher requirements are provided for wire cables for high-speed trains: the wire and cable are required to have oil resistance and flame retardance, and also have high mechanical strength and non-toxic and environment-friendly characteristics; because the laying space in the carriage of the high-speed train is narrow and the number of line turns is large, higher requirements are provided for the flexibility and the small outer diameter of the cable; as in-train automation equipment and various high-end communication equipment have increased, the demand for more precise control equipment has increased.
The high-speed train cable that present conventionality adopted lays control cable and signal cable separately, though has reached external diameter and compliance requirement, but causes the installation work volume to increase to occupy great space simultaneously, adopt control cable and signal cable's shielding mode at present to be the single-layer braided shield in addition, it is relatively poor to high frequency interference signal shielding effect, the line pair shielding interlaminar leakage cable reaches more than 15mA, mutual interference is comparatively serious.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high shielding flexible type special type composite cable to solve prior art and adopt control cable and signal cable separately to lay, cause installation work volume to increase, and occupy great space simultaneously, and the individual layer is worked out the shielding and is relatively poor to the high frequency interference signal shielding effect, and the line pair shielded layer leakage cable reaches more than 15mA, the comparatively serious technical problem of mutual interference.
In order to realize the purpose, the technical scheme of the utility model is that:
a high-shielding flexible special composite cable comprises:
the cable comprises a cable core, wherein the cable core comprises a signal unit and a control unit, the signal unit comprises a plurality of double-layer shielding wires, the double-layer shielding wires comprise inner shielding wire cores and three sub-insulation belting layers which are sequentially wrapped outside the shielding wire cores, the sub-shielding layers are arranged between the adjacent sub-insulation belting layers, the control unit comprises a plurality of control wires, and the control wires and the double-layer shielding wires are twisted to form the cable core;
the total insulating belting layer is wrapped outside the cable core;
the total shielding layer is wrapped outside the total insulating wrapping tape;
the outer protective layer wraps the total shielding layer.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model combines the signal cable and the control cable, thereby greatly reducing the installation workload and the occupied space;
2. the cable core of the utility model is formed by twisting the double-layer shielding wire and the control wire, thereby effectively reducing the outer diameter of the cable;
3. the utility model discloses double-deck shielding line periphery sets up the three-layer and divides insulating band layer, sets up branch shielding layer between adjacent branch insulating band layer, and two-layer branch is kept apart through dividing insulating band layer between the shielding layer, effectively reduces between the branch shielding layer and the line pair shielding layer leakage current, and double-deck branch shielding layer effectively strengthens the restraining ability of mutual interference between the line pair.
On the basis of the above scheme, the utility model discloses can also do following improvement:
furthermore, the shielding wire core is formed by twisting a pair of signal wires.
Through adopting above-mentioned scheme, the effective shielding sinle silk external diameter that reduces of pair twist signal line to reduce whole cable external diameter.
Furthermore, the signal line comprises an internal signal line core and a signal line insulating layer wrapped outside the signal line core.
Furthermore, the signal wire core is a round pressed stranded tinned copper soft conductor, and the signal wire insulating layer is an irradiation cross-linked polyethylene insulating layer.
By adopting the scheme, the signal wire core adopts the round compacted stranded tinned copper soft conductor, so that the cable has excellent flexibility and smaller conductor outer diameter; the irradiation crosslinked polyethylene has low dielectric constant, and ensures that the cable has signal transmission performance and long-term weather resistance and mechanical stress aging resistance.
Furthermore, the sub-shielding layer has a weaving angle of 45 +/-2OThe tinned copper wire braided shielding layer.
By adopting the scheme, the two-layer weaving angle is 45 +/-2OThe tin-plated copper wire is used for weaving the shielding twisted pair group, so that the leakage current between the separated shielding layers and the wire pair shielding layers is controlled within 5mA, and the inhibition capability of mutual interference between the wire pairs is enhanced.
Furthermore, the signal unit comprises a pair of double-layer shielding wires, and a plurality of control wires are uniformly distributed in the cabling gap of the signal unit.
By adopting the scheme, the outer diameter of the cable forming body is effectively reduced, and the structural symmetry is ensured.
Furthermore, the control line comprises an inner control line core and a control line insulating layer wrapped outside the control line core.
Furthermore, the control wire core is a round compacted stranded tin-plated copper conductor, and the control wire insulating layer is an irradiation cross-linked polyethylene insulating layer.
By adopting the scheme, the control wire core adopts the round compacted stranded tinned copper soft conductor, so that the cable has excellent flexibility and smaller conductor outer diameter; the irradiation crosslinked polyethylene has low dielectric constant, and ensures that the cable has signal transmission performance and long-term weather resistance and mechanical stress aging resistance.
Furthermore, the total shielding layer is a metal film composite belt and a tinned copper wire braided composite shielding layer.
By adopting the scheme, the metal film composite belt and the tinned copper wire are adopted to weave the double-layer composite shield, so that external high and low frequency interference signals are effectively inhibited.
Further, the outer protective layer is a polyolefin sheath layer.
By adopting the scheme, the polyolefin sheath layer enables the cable to have the performances of flame retardance, fire resistance, oil resistance, low smoke and the like, and can completely meet the harsh requirements of actual use environments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Shown in the figure:
1. a double-layer shielded wire; 101. a signal line; 1011. a signal wire core; 1012. a signal line insulating layer; 102. dividing an insulating belting layer; 103. dividing a shielding layer;
2. a control line; 201. a control wire core; 202. a control line insulating layer;
3. a total insulating tape layer;
4. a total shielding layer;
5. an outer jacket.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
As shown in fig. 1, the high-shielding flexible special composite cable provided in this embodiment includes a cable core, a total insulating tape layer 3, a total shielding layer 4, and an outer sheath 5.
The total insulating belting layer 3 is wrapped outside the cable core.
The total shielding layer 4 wraps the total insulating belting layer 3, the total shielding layer 4 is a metal film composite belt and a tinned copper wire woven composite shielding layer, specifically the metal film composite belt is an ethylene/acrylic acid copolymer metal film, and the metal film composite belt and the tinned copper wire woven double-layer composite shielding effectively inhibits external high and low frequency interference signals.
The outer protective layer 5 wraps the total shielding layer 4, and the outer protective layer 5 is a polyolefin sheath layer. The polyolefin sheath layer has the characteristics of thermosetting halogen-free low-smoke flame retardance and oil resistance, so that the cable has the performances of flame retardance, fire resistance, oil resistance, low smoke and the like, and can completely meet the harsh requirements of actual use environments.
The cable core includes signal unit and the control unit, and signal unit includes two symmetrical double-deck shielded wire 1, and double-deck shielded wire 1 includes inside shielding sinle silk and wraps up three-layer branch insulating band layer 102 outside shielding sinle silk in proper order, is equipped with between the adjacent insulating band layer 102 and divides shielding layer 103.
The periphery of the double-layer shielding wire 1 is provided with three layers of insulating belting layers 102, the sub-shielding layers 103 are arranged between the adjacent sub-insulating belting layers 102, the two layers of sub-shielding layers 103 are isolated by the sub-insulating belting layers 102, leakage currents between the sub-shielding layers 103 and between the shielding layers of the wire pairs are effectively reduced, and the double layers of sub-shielding layers 103 effectively enhance the inhibition capability of mutual interference between the wire pairs.
The shielding sinle silk comprises a pair of signal line 101 pair twist, and pair twist signal line 101 effectively reduces shielding sinle silk external diameter to reduce whole cable external diameter. The signal line 101 includes an inner signal line core 1011 and a signal line insulating layer 1012 wrapping the signal line core 1011.
The sub-shielding layer 103 has a weaving angle of 45 +/-2OThe tinned copper wire braided shielding layer.
Two-layer weaving angle 45 +/-2OThe tin-plated copper wire is used for weaving the shielding twisted pair group, so that the leakage current between the sub-shielding layers 103 and between the shielding layers of the wire pairs is controlled within 5mA, and the capability of inhibiting mutual interference between the wire pairs is enhanced.
The control unit comprises twelve control wires 2, and each control wire 2 comprises an internal control wire core 201 and a control wire insulating layer 202 wrapped outside the control wire core 201.
The control lines 2 are uniformly distributed in the cabling gaps of the two double-layer shielding lines 1, and the twelve control lines 2 are twisted with the two double-layer shielding lines 1 to form cable cores, so that the outer diameter of a cable forming body is effectively reduced, and the structural symmetry is ensured.
The signal cable and the control cable are combined, so that the installation workload is greatly reduced, and the occupied space is reduced; meanwhile, the cable core is formed by twisting the double-layer shielding wire 1 and the control wire 2, so that the outer diameter of the cable is effectively reduced.
In the embodiment, the signal wire core 1011 and the control wire core 201 are both round pressed stranded tin-plated copper conductors conforming to class 5 soft conductors in GB/T3956-2008, and the soft conductors are pressed, so that the cable has excellent flexibility and smaller outer diameter of the conductor.
The signal line insulating layer 1012 and the control line insulating layer 202 are both irradiation crosslinked polyethylene insulating layers, and irradiation crosslinked polyethylene has a low dielectric constant, so that the cable is ensured to have signal transmission performance and long-term weather and mechanical stress aging resistance.
In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
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 substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (10)
1. A high-shielding soft type special composite cable is characterized by comprising:
the cable comprises a cable core, wherein the cable core comprises a signal unit and a control unit, the signal unit comprises a plurality of double-layer shielding wires, the double-layer shielding wires comprise inner shielding wire cores and three sub-insulation belting layers which are sequentially wrapped outside the shielding wire cores, the sub-shielding layers are arranged between the adjacent sub-insulation belting layers, the control unit comprises a plurality of control wires, and the control wires and the double-layer shielding wires are twisted to form the cable core;
the total insulating belting layer is wrapped outside the cable core;
the total shielding layer is wrapped outside the total insulating wrapping tape;
the outer protective layer wraps the total shielding layer.
2. The high-shielding flexible special composite cable according to claim 1, wherein the shielding wire core is formed by twisting a pair of signal wires.
3. The high-shielding flexible special composite cable according to claim 2, wherein the signal line comprises an inner signal wire core and a signal line insulating layer wrapping the signal wire core.
4. The high-shielding flexible special composite cable according to claim 3, wherein the signal wire core is a round compacted stranded tin-plated copper flexible conductor, and the signal wire insulating layer is a radiation cross-linked polyethylene insulating layer.
5. The high-shielding flexible special composite cable according to claim 1, wherein the partial shielding layer is a tinned copper wire braided shielding layer with a braiding angle of 45 ± 2 °.
6. The high-shielding flexible special composite cable according to claim 1, wherein the signal unit comprises a pair of double-layer shielding wires, and a plurality of the control wires are uniformly distributed in the cabling gap of the signal unit.
7. The high-shielding flexible special composite cable according to claim 1, wherein the control wire comprises an inner control wire core and a control wire insulating layer wrapping the control wire core.
8. The high-shielding flexible special composite cable according to claim 7, wherein the control wire core is a round compacted stranded tinned copper flexible conductor, and the control wire insulating layer is a radiation crosslinked polyethylene insulating layer.
9. The high-shielding soft type special composite cable according to any one of claims 1 to 8, wherein the total shielding layer is a metal thin film composite tape and a tinned copper wire braided composite shielding layer.
10. The high-shielding flexible composite specialty cable according to any one of claims 1 to 8, wherein said outer jacket is a polyolefin jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021217558.2U CN212181963U (en) | 2020-06-28 | 2020-06-28 | High-shielding soft special composite cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021217558.2U CN212181963U (en) | 2020-06-28 | 2020-06-28 | High-shielding soft special composite cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212181963U true CN212181963U (en) | 2020-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021217558.2U Active CN212181963U (en) | 2020-06-28 | 2020-06-28 | High-shielding soft special composite cable |
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| Country | Link |
|---|---|
| CN (1) | CN212181963U (en) |
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2020
- 2020-06-28 CN CN202021217558.2U patent/CN212181963U/en active Active
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