CN212061916U - Halogen-free low-smoke B1-grade flame-retardant joint-tripping control cable - Google Patents
Halogen-free low-smoke B1-grade flame-retardant joint-tripping control cable Download PDFInfo
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- CN212061916U CN212061916U CN202021026824.3U CN202021026824U CN212061916U CN 212061916 U CN212061916 U CN 212061916U CN 202021026824 U CN202021026824 U CN 202021026824U CN 212061916 U CN212061916 U CN 212061916U
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Abstract
The utility model discloses a there is not steamed low fire-retardant antithetical couplet of cigarette B1 level and jumps control cable, include: a cable core; the isolation belt layer is wrapped on the outer side of the cable core; the metal shielding layer wraps the outer side of the isolation belt layer; the drainage wire is arranged between the metal shielding layer and the isolation belt layer and is parallel to the axial direction of the cable; the belting layer is wrapped on the outer side of the metal shielding layer; the fire barrier layer is wrapped on the outer side of the belting layer; the armor layer wraps the outer side of the fire barrier layer, and is a double-layer high-permeability steel belt; the oversheath layer, oversheath layer parcel in the armor outside, the utility model provides an among the prior art the cable can't be when realizing high electrical insulation performance, mechanical properties, low electric capacity and excellent electromagnetic compatibility ability, still realize linking the technical problem of the B1 level fire behavior of jumping the high safety low release of control cable.
Description
Technical Field
The utility model relates to the technical field of cables, especially, relate to there is not steamed low fire-retardant antithetical couplet of cigarette B1 level and jumps control cable.
Background
The rail transit provides a large-capacity transportation service mode with intensive resource utilization, environmental protection, comfort, safety and rapidness, and the characteristics of large transportation volume, high speed, safety, punctuality, energy conservation and the like are more fundamental ways for solving the problem of large-scale urban traffic and sustainable development. The development of rail transit drives the development of the matched cable. The joint-hop control cable for signal transmission is widely applied. The cable is laid along main lines of subways, light rails, railways and the like and is communicated with relevant devices of power transformers of all stations. In operation, if power supply is abnormal, the power transformer can respond correspondingly through weak signals transmitted by the cable, so that serious accidents such as power supply interruption caused by burnout of the power transformer are avoided. The rail transit has the conditions of dense population, small space, high electromagnetic interference in a cable laying environment and the like, so that the requirements of excellent electrical performance, safety, reliability, stable transmission, no interference and the like are provided for the cable. However, the conventional joint-jump control cable cannot fully meet the use requirements in rail transit.
Furthermore, the burning characteristic is the most critical safety characteristic of the wire and cable product besides the basic electrical and mechanical physical characteristics, and is also the quality characteristic which is not easily controllable in the cable design. As the quality attention of China to cable products is continuously raised, particularly after the Okay event, the requirements on the wire and cable products are higher than ever before. The subway is particularly concerned about the safety characteristic of products due to the key characteristic that personnel are highly dense. Therefore, in order to ensure that a subway power supply system and equipment must operate safely, reliably and efficiently, a joint jump control cable which is safe and reliable to use becomes one of necessary electrical facilities of important engineering subway projects; therefore, in order to meet the market demand, it is necessary to develop a novel high-safety low-release halogen-free low-smoke B1-grade flame-retardant joint-tripping control cable.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application aims to provide a halogen-free low-smoke B1-level flame-retardant combined-hop control cable, and solves the technical problem that the cable in the prior art cannot realize high electrical insulating property, mechanical property, low capacitance and excellent electromagnetic compatibility, and simultaneously can also realize high-safety low-release B1-level flame-retardant property of the combined-hop control cable.
The scheme for solving the technical problems in the embodiment of the application is as follows:
there is not steamed low fire-retardant antithetical couplet of cigarette B1 level jumps control cable, includes:
a cable core;
the isolation belt layer is wrapped on the outer side of the cable core;
the metal shielding layer wraps the outer side of the isolation belt layer;
the drainage wire is arranged between the metal shielding layer and the isolation belt layer and is parallel to the axial direction of the cable;
the belting layer is wrapped on the outer side of the metal shielding layer;
the fire barrier layer is wrapped on the outer side of the belting layer;
the armor layer wraps the outer side of the fire barrier layer, and is a double-layer high-permeability steel belt;
the outer sheath layer wraps the outer side of the armor layer.
According to the embodiment of the application, the armor layer is formed by the double layers of high-permeability steel belts, so that the lower ideal shielding coefficient of the cable can be met, and the excellent electromagnetic compatibility of the cable is ensured.
On the basis of the technical scheme, the utility model discloses can also do as follows the improvement:
further, the cable core is formed by the transposition of many wire groups, every wire group is formed by the transposition of two copper conductors, copper conductor outside parcel has the insulating layer, adopts this step's beneficial effect to be can part each conductor through this insulating layer, prevents that the wire from crossing.
Furthermore, the insulating layer is a physically foamed polyethylene insulating layer, and the method has the advantages that the air containing a small amount of solid medium is combined with special insulation, so that the excellent electrical performance and the good mechanical strength of the cable are ensured, and the dielectric constant of the material is ensured within a certain range, so that the requirement of low capacitance of the cable is met.
Further, the release tape layer is a polyester release tape layer.
Further, the metal shielding layer is a copper strip shielding layer coated with the conductive graphite emulsion.
Further, the outer sheath layer is a low-smoke halogen-free polyolefin sheath layer.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1. the insulating layer in the embodiment of the application adopts air containing a small amount of solid medium to combine special insulation, so that the excellent electrical performance and the good mechanical strength of the cable are ensured, and the dielectric constant of the material is ensured within a certain range, so as to ensure the requirement of low capacitance of the cable.
2. The copper strip shielding coated with the conductive graphite emulsion in the embodiment of the application can ensure excellent electromagnetic compatibility of the cable while ensuring a lower ideal shielding coefficient of the cable.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a halogen-free low-smoke B1-grade flame-retardant joint-tripping control cable according to an embodiment of the present invention;
reference numerals:
1-a cable core; 2-a release tape layer; 3-a metal shielding layer; 4-an insulating layer; 5-a drainage wire; 6-a wrapping layer; 7-fire barrier layer; 8-an armor layer; 9-an outer jacket layer;
101-conductor set.
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.
In the description of the present application, it is to be understood that the terms "upper", "lower", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.
In this application, unless expressly stated or limited otherwise, the terms "wrapped," "attached," "secured," and the like are to be construed broadly and include, for example, fixed attachments, removable attachments, or integral attachments; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The halogen-free low-smoke B1-level flame-retardant combined-hop control cable provided by the embodiment of the application solves the technical problem that the cable in the prior art cannot realize high electrical insulation performance, mechanical performance, low capacitance and excellent electromagnetic compatibility performance, and simultaneously also realizes high-safety low-release B1-level flame-retardant performance of the combined-hop control cable.
The general idea of the embodiment of the application is as follows: according to the embodiment of the application, the air containing a small amount of solid medium is combined with special insulation, so that the excellent electrical performance and good mechanical strength of the cable are ensured, and the dielectric constant of the material is ensured within a certain range, so that the requirement of low capacitance of the cable is ensured; by adopting the composite comprehensive shielding structure of the copper strip total shielding and the high-permeability steel strip armor material after the conductive graphite emulsion is coated, the excellent electromagnetic compatibility of the composite comprehensive shielding structure can be ensured.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the detailed description.
Examples
As shown in fig. 1, the halogen-free low-smoke B1-grade flame-retardant joint-tripping control cable provided by this embodiment includes:
the cable core 1 is characterized in that the cable core 1 in the embodiment of the present application is formed by twisting a plurality of conductor sets 101, as shown in an embodiment shown in fig. 1, the conductor sets 101 are formed by twisting 7 conductor sets 101, each conductor set 101 is formed by twisting two copper conductors, and in order to distinguish the copper conductors, an insulating layer 4 is wrapped outside the copper conductors;
the isolation belt layer 2 is wrapped on the outer side of the cable core 1, and the isolation belt layer 2 in the embodiment of the application is a polyester isolation belt layer;
the metal shielding layer 3 is wrapped on the outer side of the isolation belt layer 2, and the metal shielding layer 3 in the embodiment of the application is a copper strip shielding layer coated with conductive graphite emulsion, so that a lower ideal shielding coefficient of the cable can be met, and finally, excellent electromagnetic compatibility of the cable is ensured;
the drainage wire 5 is arranged between the metal shielding layer 3 and the isolation belt layer 2, and the drainage wire 5 is parallel to the axial direction of the cable;
the belting layer 6, the said belting layer 6 wraps the outside of the said metal shielding layer 3;
the fire barrier layer 7 is wrapped on the outer side of the belting layer 6;
the armor layer 8 is wrapped on the outer side of the fire barrier layer 7, and the armor layer 8 is a double-layer high-permeability steel belt;
the outer sheath layer 9 is wrapped on the outer side of the armor layer 8, the outer sheath layer 9 is a low-smoke halogen-free polyolefin sheath layer, and the oxygen index, the ignition time length, the self-extinguishing time length, the integrity of a shell after combustion, the heat release rate, the peak value and the total amount, the density of smoke with flame, the density of smoke without flame, the smoke release rate and the peak value of the smoke generation rate of the cable are comprehensively designed, so that the flame retardant characteristic, the molten drop resistance characteristic, the low-heat release performance and the low-smoke release performance of a finished cable are realized; the same is true for the fire barrier layer.
Specifically, the insulating layer 4 in the embodiment of the present application is a physically foamed polyethylene insulating layer, that is, a special insulating layer is formed by combining air containing a small amount of solid media, so that the excellent electrical performance and the good mechanical strength of the cable are ensured, and the dielectric constant of the material is ensured within a certain range, so as to ensure the requirement of low capacitance of the cable.
This application embodiment is when designing cable structure, choose for use the compound integrated shielding structure of copper strips total shield and double-deck high magnetic conduction steel band after the conductive graphite emulsion coating, the shielding suppression coefficient of cable is less like this, and this cable lays along the main lines such as subway, light rail, railway, the existence lays the condition that is close with other strong electric lines, its ideal shielding coefficient also is the factor of considering, and its copper strips shields and the structural design of high magnetic conduction steel band armor have just in time also satisfied the lower ideal shielding coefficient of cable, finally, the excellent electromagnetic compatibility of cable has been guaranteed.
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 (6)
1. A there is not steamed low cigarette B1 fire-retardant antithetical couplet of cigarette jump control cable, its characterized in that includes:
a cable core;
the isolation belt layer is wrapped on the outer side of the cable core;
the metal shielding layer wraps the outer side of the isolation belt layer;
the drainage wire is arranged between the metal shielding layer and the isolation belt layer and is parallel to the axial direction of the cable;
the belting layer is wrapped on the outer side of the metal shielding layer;
the fire barrier layer is wrapped on the outer side of the belting layer;
the armor layer wraps the outer side of the fire barrier layer, and is a double-layer high-permeability steel belt;
the outer sheath layer wraps the outer side of the armor layer.
2. The halogen-free low-smoke B1-grade flame-retardant joint-tripping control cable according to claim 1, wherein the cable core is formed by twisting a plurality of wire groups, each wire group is formed by twisting two copper conductors, and the outer sides of the copper conductors are wrapped with insulating layers.
3. The halogen-free low-smoke B1-grade flame-retardant joint-tripping control cable according to claim 2, wherein the insulating layer is a physically foamed polyethylene insulating layer.
4. The halogen-free low-smoke B1-grade flame-retardant joint-tripping control cable according to claim 3, wherein the release tape layer is a polyester release tape layer.
5. The halogen-free low-smoke B1-grade flame-retardant joint-jump control cable according to claim 4, wherein the metal shielding layer is a copper tape shielding layer coated with conductive graphite emulsion.
6. The halogen-free low-smoke B1-grade flame-retardant joint-tripping control cable according to claim 5, wherein the outer sheath layer is a low-smoke halogen-free polyolefin sheath layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021026824.3U CN212061916U (en) | 2020-06-05 | 2020-06-05 | Halogen-free low-smoke B1-grade flame-retardant joint-tripping control cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021026824.3U CN212061916U (en) | 2020-06-05 | 2020-06-05 | Halogen-free low-smoke B1-grade flame-retardant joint-tripping control cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212061916U true CN212061916U (en) | 2020-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021026824.3U Active CN212061916U (en) | 2020-06-05 | 2020-06-05 | Halogen-free low-smoke B1-grade flame-retardant joint-tripping control cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212061916U (en) |
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2020
- 2020-06-05 CN CN202021026824.3U patent/CN212061916U/en active Active
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