CN114388190A - Fire-resistant communication cable for Ethernet for rolling stock - Google Patents
Fire-resistant communication cable for Ethernet for rolling stock Download PDFInfo
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- CN114388190A CN114388190A CN202210061260.4A CN202210061260A CN114388190A CN 114388190 A CN114388190 A CN 114388190A CN 202210061260 A CN202210061260 A CN 202210061260A CN 114388190 A CN114388190 A CN 114388190A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
- H01B11/10—Screens specially adapted for reducing interference from external sources
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/16—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances gases
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
- H01B7/188—Inter-layer adherence promoting means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1895—Internal space filling-up means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/228—Metal braid
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
Abstract
The invention discloses an Ethernet communication cable for a fire-resistant locomotive vehicle, which comprises a cable body, wherein polyolefin fillers are sleeved on the surface of the cable body, electromagnetic shielding isolation layers are arranged between the polyolefin fillers in an inserting mode, cross-linked polyethylene insulation sleeves are sleeved on the outer walls of the polyolefin fillers, fluoroplastic insulation sleeves are sleeved on the outer walls of the cross-linked polyethylene insulation sleeves, gas bag bags and powder bag bags are arranged on the outer walls of the fluoroplastic insulation sleeves, mixed gas is filled in the gas bag bags, dry powder mixtures are filled in the powder bag bags, and rubber layers are sleeved on the outer walls of the powder bag bags. This kind of fire-resistant rolling stock is used for ethernet communication cable for intensity and viscidity between increase wearing layer, rubber layer and the metal mesh layer are united by wool fibre and metal mesh layer simultaneously and are strengthened the outer intensity of communication cable, increase anti puncture nature, thereby reduce the open flame and spread around, reduce the loss, realize the multiple protection architecture of communication cable, be used for cutting off external disturbance, improve communication cable communication performance.
Description
Technical Field
The invention relates to the technical field of cables, in particular to an Ethernet communication cable for a fire-resistant rolling stock.
Background
Cables are generally rope-like cables made by stranding several wires or groups of wires, each group insulated from the other and often twisted around a center, the entire outer surface being covered with a highly insulating covering. The cable has the characteristics of internal electrification and external insulation, and the flame-retardant cable is a cable which is characterized in that a test sample is burnt under specified test conditions, the flame spread is only in a limited range after a test fire source is removed, and residual flame or residual scorching can be automatically extinguished within a limited time. The flame-retardant and fire-resistant performance of the currently used locomotive cable is not stable enough, the service life of the cable is too long, the damage to a protective layer body of the cable is caused, the use is influenced, the protective layer of the existing cable is not comprehensive enough, the cable can be broken under the condition that open fire is burnt for a long time, short circuit and secondary damage are caused, the fire hazard range can be rapidly spread, great potential safety hazards are generated, and high loss is caused. Therefore, we improve this and propose a fire-resistant cable for ethernet communication for rolling stock.
Disclosure of Invention
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to an Ethernet communication cable for a fire-resistant locomotive vehicle, which comprises a cable body, wherein polyolefin fillers are sleeved on the surface of the cable body, electromagnetic shielding isolation layers are arranged between the polyolefin fillers in an inserting mode, cross-linked polyethylene insulation sleeves are sleeved on the outer walls of the polyolefin fillers, fluoroplastic insulation sleeves are sleeved on the outer walls of the cross-linked polyethylene insulation sleeves, gas bag bags and powder bag bags are arranged on the outer walls of the fluoroplastic insulation sleeves, mixed gas is filled in the gas bag bags, dry powder mixture is filled in the powder bag bags, rubber layers are sleeved on the outer walls of the powder bag bags, metal net layers are attached to the outer walls of the rubber layers, and wear-resistant layers are sleeved on the outer walls of the metal net layers.
According to a preferable technical scheme of the invention, the cable bodies are arranged in a group in an annular array, and the surface of the cable body is coated with insulating rubber.
As a preferable technical solution of the present invention, the cable body is located inside the crosslinked polyethylene insulating sheath, and the polyolefin filler is filled in a gap between the crosslinked polyethylene insulating sheath and the cable body.
As a preferable technical scheme of the invention, the polyolefin filler is separated by an electromagnetic shielding isolation layer, and the gas bag and the powder bag are separated by the electromagnetic shielding isolation layer.
As a preferred technical scheme of the invention, the gas bag and the powder bag are arranged in an annular array, a certain gap is arranged between the gas bag and the powder bag array, and the gas bag and the powder bag are in a spherical structure.
In a preferred embodiment of the present invention, the mixed gas is a combination of two or more of heptafluoropropane, gas IG541, carbon dioxide and an inert gas, and the mixed gas is encapsulated in a gas capsule, the dry powder mixture is a combination of two or more of baking soda, ammonium carbonate and phosphoric acid, and the dry powder mixture is encapsulated in a powder capsule.
As a preferable technical scheme of the invention, the fluoroplastic insulating sleeve is fixedly connected with the crosslinked polyethylene insulating sleeve through a flame-retardant adhesive, and the rubber layer is fixedly adhered with the metal mesh layer and the wear-resistant layer through the flame-retardant adhesive.
As a preferred technical scheme of the invention, a plurality of groups of wool fibers are arranged on the outer wall of the rubber layer and the inner wall of the wear-resistant layer, and the wool fibers are wound, adhered and fixed with the metal mesh layer through the flame-retardant adhesive.
The invention has the beneficial effects that:
1. the fire-resistant communication cable for the locomotive is provided with the wool fibers on the wear-resistant layer and the rubber layer, and the wool fibers are wound, adhered and fixed with the metal net layer by the aid of the flame-retardant adhesive, so that the strength and the viscosity among the wear-resistant layer, the rubber layer and the metal net layer are increased, meanwhile, the strength of the outer layer of the communication cable is enhanced by the combination of the wool fibers and the metal net layer, and the puncture resistance is increased;
2. the fire-resistant communication cable for the locomotive is provided with the mixed gas and dry powder mixture which are matched with the gas bag and the powder bag to operate in a combined mode, so that under the conditions that the outer layer of the communication cable is roasted at high temperature and burnt and damaged when exposed fire occurs, the powder bag is burst at high temperature, the dry powder mixture in the powder bag is burst at high temperature, the nearby exposed fire is extinguished by explosion, the gas bag is burst at high temperature, and the mixed gas in the powder bag is dissipated to extinguish the surrounding exposed fire, so that the spread of the surrounding exposed fire is reduced, and the loss is reduced;
3. this kind of fire-resistant rolling stock is used for ethernet communication cable, through fluoroplastics insulating cover and the insulating function of crosslinked polyethylene insulating cover joint, constitute the multiple fire-retardant layer in communication cable middle part, insulating rubber constitutes the multiple fire-retardant layer in inside on through polyolefin filler and cable body, realize the multiple protection architecture of communication cable, be equipped with the electromagnetic shield isolation layer simultaneously and install in the communication cable inlayer, be used for cutting off external disturbance, improve communication cable communication performance, simple structure is reasonable, high durability and convenient use, the majority problem of having now has effectively been solved, and has higher practical value.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a cross-sectional view of an Ethernet communication cable for a fire-resistant rolling stock according to the present invention;
FIG. 2 is an enlarged view of the location A of the Ethernet communication cable for a fire-resistant rolling stock according to the present invention;
fig. 3 is a side view of a gas bag for an ethernet communication cable of a fire-resistant rolling stock according to the present invention.
In the figure: 1. a cable body; 2. a polyolefin filler; 3. gas bag; 4. powder encapsulation; 5. a crosslinked polyethylene insulating sleeve; 6. a fluoroplastic insulating sleeve; 7. an electromagnetic shielding isolation layer; 8. a rubber layer; 9. a metal mesh layer; 10. a wear layer; 11. a dry powder mixture; 12. and (4) mixing the gases.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in fig. 1 to 3, the ethernet communication cable for the fire-resistant rolling stock comprises a cable body 1, wherein polyolefin fillers 2 are sleeved on the surface of the cable body 1, electromagnetic shielding isolation layers 7 are alternately arranged between the polyolefin fillers 2, a cross-linked polyethylene insulation sleeve 5 is sleeved on the outer wall of the polyolefin fillers 2, a fluoroplastic insulation sleeve 6 is sleeved on the outer wall of the cross-linked polyethylene insulation sleeve 5, a gas bag 3 and a powder bag 4 are arranged on the outer wall of the fluoroplastic insulation sleeve 6, a mixed gas 12 is filled in the gas bag 3, a dry powder mixture 11 is filled in the powder bag 4, a rubber layer 8 is sleeved on the outer wall of the powder bag 4, a metal mesh layer 9 is attached to the outer wall of the rubber layer 8, and a wear-resistant layer 10 is sleeved on the outer wall of the metal mesh layer 9.
Wherein, cable body 1 is the annular array setting with one of them group, and cable body 1 surface is equipped with insulating rubber parcel, constitutes inside multiple fire-retardant layer.
The cable body 1 is located inside the crosslinked polyethylene insulating sleeve 5, and the polyolefin filler 2 is filled in a gap between the crosslinked polyethylene insulating sleeve 5 and the cable body 1 and used for protecting the cable body 1.
Wherein, polyolefin filler 2 cuts off through electromagnetic shield isolation layer 7, cuts off through electromagnetic shield isolation layer 7 between gaseous bag 3 and the powder bag 4 for cut off external interference, improve communication cable communication performance.
Wherein, the gas bag 3 and the powder bag 4 are arranged in an annular array, a certain gap is arranged between the gas bag 3 and the powder bag 4, and the gas bag 3 and the powder bag 4 are both in a spherical structure, so that the spread of surrounding open fire is reduced, and the loss is reduced.
Wherein the mixed gas 12 is a combination of two or more of heptafluoropropane, gas IG541, carbon dioxide and an inert gas, and the mixed gas 12 is enclosed within the gas sachet 3, the dry powder mixture 11 is a combination of two or more of baking soda, ammonium carbonate and phosphoric acid, and the dry powder mixture 11 is enclosed within the powder sachet 4 for protection against open fire.
The fluoroplastic insulating sleeve 6 is fixedly connected with the crosslinked polyethylene insulating sleeve 5 through a flame-retardant adhesive, and the rubber layer 8 is fixedly adhered with the metal mesh layer 9 and the wear-resistant layer 10 through the flame-retardant adhesive.
Wherein, the outer wall of the rubber layer 8 and the inner wall of the wear-resistant layer 10 are both provided with a plurality of groups of wool fibers, and the wool fibers are wound, adhered and fixed with the metal mesh layer 9 through the flame-retardant adhesive.
The working principle is as follows: the wool fibers are arranged on the wear-resistant layer 10 and the rubber layer 8, and the flame-retardant adhesive is used for assisting the wool fibers to be wound, adhered and fixed with the metal mesh layer 9 so as to increase the strength and the viscosity among the wear-resistant layer 10, the rubber layer 8 and the metal mesh layer 9, and simultaneously the wool fibers and the metal mesh layer 9 are combined to enhance the strength of the outer layer of the communication cable and increase the puncture resistance; the mixed gas 12 and the dry powder mixture 11 are matched with the gas bag 3 and the powder bag 4 to jointly operate, so that under the conditions that the outer layer of the communication cable is roasted at high temperature and burnt and damaged, the powder bag 4 is burst at high temperature, the dry powder mixture 11 in the powder bag is burst to extinguish nearby open fire, the gas bag 3 is burst at high temperature, and the mixed gas 12 in the powder bag escapes to extinguish the surrounding open fire, so that the surrounding open fire is reduced, and the loss is reduced; through fluoroplastic insulating sleeve 6 and crosslinked polyethylene insulating sleeve 5 combined operation, constitute the multiple fire-retardant layer in communication cable middle part, constitute the multiple fire-retardant layer in inside through insulating rubber on polyolefin filler 2 and the cable body 1, realize the multiple protection architecture of communication cable, be equipped with electromagnetic shield isolation layer 7 simultaneously and install in the communication cable inlayer, be used for cutting off external disturbance, improve communication cable communication performance, simple structure is reasonable, high durability and convenient use, the majority problem of having now effectively solved, and has higher practical value.
Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a fire-resistant locomotive vehicle is used for ethernet communication cable, includes cable body (1), its characterized in that, cable body (1) surface cover is equipped with polyolefin filler (2), alternate between polyolefin filler (2) and install electromagnetic shield isolation layer (7), polyolefin filler (2) outer wall cover is established and is installed cross-linked polyethylene insulating cover (5), cross-linked polyethylene insulating cover (5) outer wall cover is equipped with fluoroplastics insulating cover (6), fluoroplastics insulating cover (6) outer wall is installed gas bag package (3) and powder bag package (4), gas bag package (3) inside is filled with gas mixture (12), powder bag package (4) inside is filled with dry powder mixture (11), powder bag package (4) outer wall cover is established and is installed rubber layer (8), metal mesh layer (9) are installed in rubber layer (8) outer wall attached, and the outer wall of the metal mesh layer (9) is sleeved with a wear-resistant layer (10).
2. A fire-resistant cable for ethernet communication in rolling stock according to claim 1, wherein said cable bodies (1) are arranged in an annular array in one group, and the surface of said cable bodies (1) is provided with an insulating rubber coating.
3. A fire-resistant cable for ethernet communication in rolling stock according to claim 1, wherein the cable body (1) is located inside the insulating sheath (5) of cross-linked polyethylene, and the polyolefin filler (2) is filled in the space between the insulating sheath (5) of cross-linked polyethylene and the cable body (1).
4. Fire-resistant communication cable for the ethernet of a rolling stock according to claim 1, wherein the polyolefin filler (2) is separated by an electromagnetic shielding barrier (7) and the gas capsule (3) and the powder capsule (4) are separated by an electromagnetic shielding barrier (7).
5. The fire-resistant communication cable for the Ethernet of the rolling stock of claim 1, wherein the gas bag packet (3) and the powder bag packet (4) are arranged in an annular array, a certain gap is arranged between the gas bag packet (3) and the powder bag packet (4), and the gas bag packet (3) and the powder bag packet (4) are both in a spherical structure.
6. The cable according to claim 1, wherein the mixed gas (12) is a combination of two or more of heptafluoropropane, gas IG541, carbon dioxide and inert gas, the mixed gas (12) is encapsulated in a gas capsule (3), the dry powder mixture (11) is a combination of two or more of baking soda, ammonium carbonate and phosphoric acid, and the dry powder mixture (11) is encapsulated in a powder capsule (4).
7. A fire-resistant cable for communication with the ethernet for rolling stock according to claim 1, wherein said fluoroplastic insulating sheath (6) is fixedly connected to the cross-linked polyethylene insulating sheath (5) by a fire-retardant adhesive, and said rubber layer (8) is fixedly bonded to the metal mesh layer (9) and the wear-resistant layer (10) by a fire-retardant adhesive.
8. The fire-resistant communication cable for the Ethernet of rolling stock according to claim 1, wherein the outer wall of the rubber layer (8) and the inner wall of the wear-resistant layer (10) are provided with a plurality of groups of wool fibers, and the wool fibers are wound, adhered and fixed with the metal mesh layer (9) through a flame-retardant adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210061260.4A CN114388190A (en) | 2022-01-19 | 2022-01-19 | Fire-resistant communication cable for Ethernet for rolling stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210061260.4A CN114388190A (en) | 2022-01-19 | 2022-01-19 | Fire-resistant communication cable for Ethernet for rolling stock |
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| Publication Number | Publication Date |
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| CN114388190A true CN114388190A (en) | 2022-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210061260.4A Pending CN114388190A (en) | 2022-01-19 | 2022-01-19 | Fire-resistant communication cable for Ethernet for rolling stock |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114420359A (en) * | 2022-01-25 | 2022-04-29 | 迈特诺（马鞍山）特种电缆有限公司 | Low-smoke halogen-free crosslinked polyethylene high-voltage cable for new energy automobile |
| CN114566321A (en) * | 2022-01-25 | 2022-05-31 | 迈特诺（马鞍山）特种电缆有限公司 | Multifunctional fire-resistant MVB communication bus cable for rolling stock |
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