CN216212521U - Multifunctional photoelectric composite cable for rail transit vehicle - Google Patents
Multifunctional photoelectric composite cable for rail transit vehicle Download PDFInfo
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- CN216212521U CN216212521U CN202122349120.0U CN202122349120U CN216212521U CN 216212521 U CN216212521 U CN 216212521U CN 202122349120 U CN202122349120 U CN 202122349120U CN 216212521 U CN216212521 U CN 216212521U
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Abstract
The utility model discloses a multifunctional photoelectric composite cable for a rail transit vehicle, which comprises a plurality of optical units, a heat insulation layer, a plurality of electrical units, a plurality of heat dissipation fiber units and an outer protective layer, wherein the heat insulation layer is arranged outside the optical units, the electrical units and the heat dissipation fiber units are arranged outside the heat insulation layer, and the outer protective layer is arranged outside the electrical units and the heat dissipation fiber units. The utility model integrates electric power, signal transmission and optical fiber, and reduces multiple wiring in the rail transit vehicle; meanwhile, the cable has the advantages of softness and high temperature resistance of the standard EN50382 series cable and wear resistance of the standard EN50264 series cable, has the performances of low smoke, zero halogen, flame retardance, mineral oil resistance, fuel oil resistance, high and low temperature resistance, softness and the like, and ensures the reliability of the cable in a long-term working environment.
Description
Technical Field
The utility model relates to a photoelectric composite cable, in particular to a multifunctional photoelectric composite cable for rail transit vehicles, and belongs to the field of photoelectric cables.
Background
Railway transportation is one of the main modes of modern transportation and also one of the basic modes constituting land transportation, and the railway transportation is less affected by climate and natural conditions, has large transportation capacity and single-vehicle loading capacity, and has advantages in transportation regularity and low cost, and in addition, various types of vehicles enable the railway transportation to carry any commodity without any weight and volume limitation, which are incomparable with road and air transporters, so that the railway occupies an important position in the whole transportation field and plays an increasingly important role. The railway is used as an important infrastructure of the country, is the backbone of a comprehensive transportation system of the country, and is also an effective transportation mode which develops in a walking and intensive manner and improves the utilization efficiency of resources. In recent years, railway transportation ensures transportation safety, and simultaneously realizes great increase of passenger and freight transportation volume, and the energy expansion and efficiency improvement become the development direction of railway transportation in the future in the face of the situation of coal-electricity-oil transportation shortage brought by rapid development of national economy.
With the trend of developed and perfect railway network in China, the quantity, variety, quality and technical level of rail transit vehicles directly influence the scale and speed of rail transit construction in China, in the early stage, the vehicles in China introduce the technology of Germany, France, Japan and other countries, the vehicle type design is different, and cables imported from France, Swiss and Japan and installed and used on original vehicles are also characterized. In the high-speed development period of the rail transit vehicle technology in China, the European standard EN50264 is widely used on vehicles: 2008. EN 50382: 2008 series power cable, european standard EN 50264: the 2008 series cable has the characteristics of high mechanical strength, high tearing strength and environmental resistance for resisting corrosion of various acid and alkali grease, but the temperature resistance grade is low, and the cable is weak in softness. European standard EN 50382: 2008 series cables have the characteristic of long-term resistance to high temperature of 150 ℃ and short time of 5 seconds up to 350 ℃, but have weak mechanical properties such as tensile strength, tear resistance and the like.
The performance of different standard series cables is respectively advantageous, but the breadth of our country is broad, the environmental difference between the east, the west and the south is large, the rail transit vehicle is influenced by factors such as regional temperature difference, humidity and altitude after long-term running, and along with the development of novel intelligentization and unmanned trains, the vehicle-mounted equipment is remarkably increased, and higher requirements are provided for a vehicle communication network system. The track traffic vehicle is narrow and small in wiring space and small in wiring bending radius, and the optical fiber is easy to break when the optical fiber is used for being laid in the vehicle and the vehicle vibrates in operation at present. Therefore, in order to be suitable for the national conditions of China and ensure the reliable use of cables in railway rolling stock, EN50264 needs to be integrated: 2008. EN 50382: 2008 series cables and optical cables have the advantages of high and low temperature resistance, aging resistance, scratch and abrasion resistance and long service life.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a multifunctional photoelectric composite cable for a rail transit vehicle, which has good heat dissipation performance and bending performance.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:
the utility model provides a multi-functional photoelectricity composite cable for rail transit vehicle which characterized in that: contain a plurality of optical unit, insulating layer, a plurality of electric unit, a plurality of heat dissipation fibre unit and outer jacket, the insulating layer setting is in the optical unit outside, and a plurality of electric unit and a plurality of heat dissipation fibre unit set up in the insulating layer outside, and the outer jacket setting is in a plurality of electric unit and a plurality of heat dissipation fibre unit outsides.
Furthermore, the plurality of optical units adopt one or more of a G-layer twisted fully dry type optical transmission unit, a GX-central tube fully dry type optical unit, a GT-layer twisted filling type optical unit and a GXT-central tube filling type optical unit.
Furthermore, the heat insulation layer is made of high silica glass fiber material, and the original composition of the high silica glass fiber material is SiO2-B203-Na2An O ternary system.
Further, the electric unit comprises an electric unit conductor, an electric unit insulator and a metal shielding layer which are sequentially arranged from inside to outside.
Furthermore, the electric unit conductor adopts a tinned copper conductor, the diameter of each single wire of the tinned copper conductor is 0.16-0.41mm, the breaking elongation of each single wire is not less than 30%, and a plurality of single wires of the tinned copper conductor are twisted in the strand twisting direction and the compound twisting direction in a different direction to form a cross section of 0.5-240mm2The tin-plated conductor of (1).
Furthermore, the electric unit is insulated by adopting a flame-retardant silicone rubber material with high and low temperature resistance and super oil resistance.
Further, the metal shielding layer is braided by adopting a soft tin-plated copper alloy with the braiding density of not less than 85%.
Further, the heat dissipation fiber unit is made of a high-thermal-conductivity carbon fiber material.
Furthermore, the outer protective layer is made of low-smoke, halogen-free, flame-retardant and wear-resistant irradiation crosslinking polyolefin material.
Compared with the prior art, the utility model has the following advantages and effects: the multifunctional photoelectric composite cable for the rail transit vehicle and the preparation method thereof integrate the power, the signal transmission and the optical fiber, and reduce the repeated wiring in the rail transit vehicle; meanwhile, the cable has the advantages of softness and high temperature resistance of the standard EN50382 series cable and wear resistance of the standard EN50264 series cable, has the performances of low smoke, zero halogen, flame retardance, mineral oil resistance, fuel oil resistance, high and low temperature resistance, softness and the like, and ensures the reliability of the cable in a long-term working environment.
Drawings
Fig. 1 is a schematic view of a multifunctional photoelectric composite cable for a rail transit vehicle according to the present invention.
Fig. 2 is a schematic view of an electrical unit of the present invention.
Detailed Description
To elaborate on technical solutions adopted by the present invention to achieve predetermined technical objects, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, it is obvious that the described embodiments are only partial embodiments of the present invention, not all embodiments, and technical means or technical features in the embodiments of the present invention may be replaced without creative efforts, and the present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.
As shown in fig. 1, the multifunctional photoelectric composite cable for rail transit vehicles according to the present invention includes a plurality of optical units 1, a thermal insulation layer 2, a plurality of electrical units 3, a plurality of heat dissipation fiber units 4, and an outer sheath 5, wherein the thermal insulation layer 2 is disposed outside the optical units 1, the plurality of electrical units 3 and the plurality of heat dissipation fiber units 4 are disposed outside the thermal insulation layer 2, and the outer sheath 5 is disposed outside the plurality of electrical units 3 and the plurality of heat dissipation fiber units 4. The optical unit 1 and the electric unit 3 are separated by the heat insulation layer 2, so that the influence of heat generated by the electric unit 3 on the optical unit 1 is blocked, the influence of heat generated by continuous work of the electric unit on the optical fiber is reduced, and the optical fiber can work in a normal environment. Meanwhile, the electric unit 3 and the heat dissipation fiber unit 4 are twisted on the outer side of the optical unit 1 to protect the optical unit, so that the bending performance of the cable in the wiring process is improved, and the vibration reduction and protection effects on the cable in the vehicle running process are achieved. The heat dissipation fiber unit 4 is made of a high-heat-conductivity carbon fiber material, the heat conductivity coefficient can reach 700W/mk to the maximum, the heat dissipation fiber unit 4 has good mechanical performance and electric conductivity and excellent heat conduction and radiation heat dissipation capabilities, and heat generated by the electric unit 3 is rapidly conducted out by the heat dissipation fiber unit 4, so that the temperature in the composite optical cable is reduced, and stable operation of the optical unit 1 and the electric unit 3 is guaranteed. Meanwhile, when the insulation of the electric unit is broken down, the carbon fiber has good conductivity, the end part of the high-conductivity carbon fiber material is grounded, and the broken short-circuit current can be quickly led out, so that the photoelectric composite cable and related equipment are protected.
The plurality of optical units 1 adopt one or more of G-layer twist full-dry type optical transmission units, GX-central tube full-dry type optical units, GT-layer twist filling type optical units and GXT-central tube filling type optical units, and various optical units are adopted for users to select, so that the requirements of different information transmission capacities in actual use are met, and the requirements of remote transmission of different degrees are met.
The heat insulation layer is made of high silica glass fiber materials, and the high silica glass fiber materials have the advantages of excellent chemical stability, good dielectric property, high temperature resistance, heat insulation and the like, are stable in structure and performance and do no harm to human bodies. The original composition of the high silica glass fiber material adopts SiO2-B203-Na2The O ternary system is the main system, wherein the content of silicon oxide is 96-98 percent.
As shown in fig. 2, the electrical unit 3 comprises an electrical unit conductor 6, an electrical unit insulation 7 and a metal shielding layer 8 arranged in this order from the inside to the outside. The electric unit conductor 6 adopts a tinned copper conductor, the diameter of a single wire of the tinned copper conductor is 0.16-0.41mm, the breaking elongation of the single wire is not less than 30%, and in order to ensure that the conductor does not have the phenomenon of strand scattering or even insulation piercing under the working condition of a dynamic environment, a plurality of tinned copper conductor single wires are twisted into a cross section of 0.5-240mm in a strand twisting direction and a compound twisting direction in a different direction2The tin-plated conductor of (1). The electric unit insulation 7 is made of a high-low temperature resistant and super oil resistant flame-retardant silicone rubber material, so that the cable has low smoke, halogen-free, flame-retardant, high-low temperature resistant and oil resistant performances when in use. The metal shielding layer is woven by adopting soft tin-plated copper alloy with the weaving density of not less than 85 percent, so that the reliability of the cable in long-time, large-distance and irregular vibration environments is ensured, and the cable core of the electric unit is prevented from being broken to influence the transmission of electric energy.
The heat dissipation fiber unit 4 is made of high-heat-conductivity carbon fiber materials, the heat conductivity coefficient is 400W/mk-700W/mk, and heat generated when the electric unit works is conducted through the heat dissipation fiber layer. The heat dissipation fiber unit 4 can be made of hollow or solid carbon fiber material, and in this embodiment, a hollow circular tube structure is adopted to enhance the heat dissipation area and further reduce the weight of the composite cable.
The outer protective layer 5 is made of low-smoke, halogen-free, flame-retardant and wear-resistant irradiation cross-linked polyolefin material. The insulation is made of silicon rubber materials, the silicon rubber materials can still keep certain flexibility, rebound resilience and surface hardness under the high-temperature condition, and the mechanical properties are not obviously changed, because the mechanical strength of the commonly used flame-retardant silicon rubber materials is usually about 8MPa, and the tear resistance is poor, the outer sheath materials are made of polyolefin materials with excellent mechanical properties, and the polyolefin materials are combined to complement each other in performance, in addition, the metal shielding layer with excellent mechanical properties is coated outside the electrical unit insulation, and the reliability of the product in long-term operation is ensured. Compared with the conventional normal-temperature rubber extrusion and continuous vulcanization technology, the polyolefin sheath adopts the high-temperature extrusion and irradiation crosslinking technology, on one hand, the problem of adhesion between silicon rubber insulation and the polyolefin rubber sheath is solved, the use of substances such as talcum powder and the like which are forbidden in China middle-sized vehicles such as insulating sheath is avoided, on the other hand, a rubber vulcanization system generally adopts a dehydration polymerization principle to realize that material molecules are changed into a net structure from linearity, and additionally generated water molecules can cause influence on long-term use of the cable. After the irradiation crosslinking is realized by breaking molecular C-C bonds through high-energy electron beams, the active free radical is polymerized again to form a net-shaped molecular structure, no new substance is introduced or produced, and the reliability of the cable in long-term operation is improved.
The utility model discloses a preparation method of a multifunctional photoelectric composite cable for rail transit vehicles, which comprises the following steps:
deplating: the copper rod generates internal stress through wire-drawing metal grain refinement, lattice distortion and dislocation, so that the strength and the hardness are increased, the electric conductivity and the elongation rate are reduced, and after high-temperature annealing at 580-600 ℃, copper monofilament lattices are gathered and arranged again, so that the performance is recovered to the level before wire drawing; after the monofilament is annealed, the monofilament passes through a tin furnace at 380-400 ℃, and then is subjected to sizing by an eye die at the tail end of the tin furnace, and the molten tin layer is uniformly coated on the surface of the conductor.
Conductor stranding: the electric unit conductor comprises a bundle wire and a complex twist, wherein a plurality of electric unit conductor monofilaments with the small diameter phi of 0.16-0.41mm are twisted into the electric unit conductor in a strand twisting direction and a complex twisting direction in a different direction.
Rubber extrusion and continuous vulcanization: the electric unit insulation is extruded outside the electric unit conductor by using an extruding machine with a screw diameter phi of 90-150mm, a length-diameter ratio of 16-25 and a compression ratio of 1-1.5, then steam vulcanization is immediately carried out, and the vulcanization time is controlled by controlling the linear speed, the length of a vulcanization pipeline and the steam pressure.
Weaving: weaving by using soft tin-plated copper alloy monofilaments, wherein the diameter phi of each soft tin-plated copper alloy monofilament is 0.05mm +/-0.003 mm, the elongation of a braided wire is not less than 5%, the tensile strength is not less than 350MPa, the included angle between the braided wire and the central line of a core wire is 15-35%, and the weaving density is not less than 85%;
stranding the wire cores: the optical unit and the electric unit are twisted by adopting a 3+9 stable structure, the optical unit is used as a cable core central layer, the electric unit and the heat dissipation fiber unit are uniformly coated on the surface of the optical unit, and the heat dissipation fiber unit is close to the electric unit. The electrical units can be single or multiple, in this embodiment, the three electrical units are distributed in an equilateral triangle at intervals of 60 degrees, the three heat dissipation fiber units are correspondingly arranged on one sides of the three electrical units one by one, and the remaining three electrical units, the heat dissipation fiber units or the reinforcing cores can be selected randomly as required for filling.
The multifunctional photoelectric composite cable for the rail transit vehicle and the preparation method thereof integrate the power, the signal transmission and the optical fiber, and reduce the repeated wiring in the rail transit vehicle; meanwhile, the cable has the advantages of softness and high temperature resistance of the standard EN50382 series cable and wear resistance of the standard EN50264 series cable, has the performances of low smoke, zero halogen, flame retardance, mineral oil resistance, fuel oil resistance, high and low temperature resistance, softness and the like, and ensures the reliability of the cable in a long-term working environment.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (8)
1. The utility model provides a multi-functional photoelectricity composite cable for rail transit vehicle which characterized in that: contain a plurality of optical unit, insulating layer, a plurality of electric unit, a plurality of heat dissipation fibre unit and outer jacket, the insulating layer setting is in the optical unit outside, and a plurality of electric unit and a plurality of heat dissipation fibre unit set up in the insulating layer outside, and the outer jacket setting is in a plurality of electric unit and a plurality of heat dissipation fibre unit outsides.
2. The multifunctional photoelectric composite cable for the rail transit vehicle as claimed in claim 1, wherein: the plurality of optical units adopt one or more of G-layer twist full-dry type optical transmission units, GX-central tube full-dry type optical units, GT-layer twist filling type optical units and GXT-central tube filling type optical units.
3. The multifunctional photoelectric composite cable for the rail transit vehicle as claimed in claim 1, wherein: the electric unit comprises an electric unit conductor, an electric unit insulator and a metal shielding layer which are sequentially arranged from inside to outside.
4. The multifunctional photoelectric composite cable for the rail transit vehicle as claimed in claim 3, wherein: the electric unit conductor adopts a tinned copper conductor, the diameter of each single wire of the tinned copper conductor is 0.16-0.41mm, the breaking elongation of each single wire is not less than 30%, and a plurality of single wires of the tinned copper conductor are twisted in a strand twisting direction and a compound twisting direction in a different twisting direction to form a cross section of 0.5-240mm2The tin-plated conductor of (1).
5. The multifunctional photoelectric composite cable for the rail transit vehicle as claimed in claim 3, wherein: the electric unit is insulated by adopting a high-low temperature resistant and super oil resistant flame-retardant silicone rubber material.
6. The multifunctional photoelectric composite cable for the rail transit vehicle as claimed in claim 3, wherein: the metal shielding layer is woven by adopting soft tin-plated copper alloy with the weaving density of not less than 85%.
7. The multifunctional photoelectric composite cable for the rail transit vehicle as claimed in claim 1, wherein: the heat dissipation fiber unit is made of high-heat-conductivity carbon fiber materials.
8. The multifunctional photoelectric composite cable for the rail transit vehicle as claimed in claim 1, wherein: the outer protective layer is made of low-smoke, halogen-free, flame-retardant and wear-resistant irradiation cross-linked polyolefin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122349120.0U CN216212521U (en) | 2021-09-27 | 2021-09-27 | Multifunctional photoelectric composite cable for rail transit vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122349120.0U CN216212521U (en) | 2021-09-27 | 2021-09-27 | Multifunctional photoelectric composite cable for rail transit vehicle |
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| Publication Number | Publication Date |
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| CN216212521U true CN216212521U (en) | 2022-04-05 |
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| CN202122349120.0U Active CN216212521U (en) | 2021-09-27 | 2021-09-27 | Multifunctional photoelectric composite cable for rail transit vehicle |
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- 2021-09-27 CN CN202122349120.0U patent/CN216212521U/en active Active
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