CN212061938U - High-shielding cable for high-speed rail - Google Patents
High-shielding cable for high-speed rail Download PDFInfo
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- CN212061938U CN212061938U CN202021159275.7U CN202021159275U CN212061938U CN 212061938 U CN212061938 U CN 212061938U CN 202021159275 U CN202021159275 U CN 202021159275U CN 212061938 U CN212061938 U CN 212061938U
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Abstract
The utility model relates to a high-shielding cable for high-speed rail, which comprises a cable core, a filling component filled on the cable core and a first insulating layer coated on the filling component; the cable core comprises an inner conductor, an inner shielding layer coated on the conductor, a first anti-static layer coated on the inner shielding layer, a second insulating layer coated on the first anti-static layer, a second anti-static layer coated on the second insulating layer, an outer shielding layer coated on the second anti-static layer and an electromagnetic signal shielding layer coated on the outer shielding layer. The utility model arranges the inner and outer shielding layers at the inner and outer sides of the insulating layer, thereby not only ensuring that the electric field concentration cannot occur between the conductor and the insulating layer, but also ensuring that the electric field concentration cannot occur between the insulating layer and the electromagnetic signal shielding layer; and an anti-static layer is arranged inside and outside the second insulating layer to prevent the insulating layer and the inner and outer shielding layers from generating static electricity and damaging the insulating layer.
Description
Technical Field
The utility model belongs to the technical field of wire and cable's technique and specifically relates to a high shielded cable is used to high-speed railway is related to.
Background
The electric wire and the cable are electric products for transmitting electric energy, transmitting information and realizing electromagnetic energy conversion; there are two main types of cables for transmitting electric power, one being a cable product for transmitting and distributing high-power electric power in a main line of an electric power system, including an insulated power cable having a higher voltage class; the other type is a wire cable used in electronic and electrical equipment, which is a power supply connection line that can be transmitted from a power distribution point to electrical equipment, and such a cable is often laid in a limited space of various electronic equipment, and has a narrow space and a complex routing path, such as a mobile communication base station, etc., and the cable not only has good laying performance, but also has electrical properties such as good insulation and shielding properties.
At present, most of electric wires and cables consist of cable cores, fillers filled on the cable cores and sheath layers coated outside the fillers, and the cable cores consist of conductors, insulating layers coated on the conductors and electromagnetic signal shielding layers coated on the insulating layers.
The above prior art solutions have the following drawbacks: because the surface part of the conductor is smooth, a gap is easily generated between the conductor and the insulating layer, an electric field is concentrated, and partial discharge is easily generated after long-term use; similarly, a gap is easily formed between the insulating layer and the filling member, and an electric field is also concentrated, so that partial discharge is easily caused in long-term use.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high shielded cable for high-speed railway, both guaranteed that the electric field can not take place between conductor and the insulating layer and concentrate, guaranteed again that the electric field can not take place between insulating layer and the electromagnetic signal shielding layer and concentrate.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a high-shielding cable for high-speed rails comprises a cable core, a filling member filled outside the cable core and a first insulating layer coated outside the filling member;
the cable core comprises an inner conductor, an inner shielding layer coated on the conductor, a first anti-static layer coated on the inner shielding layer, a second insulating layer coated on the first anti-static layer, a second anti-static layer coated on the second insulating layer, an outer shielding layer coated on the second anti-static layer and an electromagnetic signal shielding layer coated on the outer shielding layer.
By adopting the technical scheme, the inner shielding layer is additionally arranged between the conductor and the insulating layer, and the inner shielding layer and the conductor have the same electric potential, so that electric field concentration cannot occur between the conductor and the inner shielding layer; an electromagnetic signal shielding layer is coated outside the insulating layer to prevent electromagnetic signals between the cable cores from influencing each other; increase outer shielding layer between insulating layer and electromagnetic signal shielding layer, outer shielding layer and electromagnetic signal layer equipotential to electric field concentration can not take place for insulating layer and electromagnetic signal shielding layer, sets up antistatic backing inside and outside the second insulating layer, prevents that insulating layer and inside and outside shielding layer from producing static and damaging the insulating layer.
The present invention may be further configured in a preferred embodiment as: the outer surface of the electromagnetic signal shielding layer is corrugated.
By adopting the technical scheme, the cable core is convenient to fix, and the conductors cannot slide relatively.
The present invention may be further configured in a preferred embodiment as: the ripples on two cable cores are the same and cooperate the joint together.
Through adopting above-mentioned technical scheme, two cable core cooperation joints have increased the space utilization in the cable together, make and to hold more cable cores in the same space.
The present invention may be further configured in a preferred embodiment as: the inner shielding layer and the outer shielding layer are both arranged to be semiconductor material layers.
By adopting the technical scheme, the semiconductor material layer has the functions of improving the electric field distribution and avoiding the partial discharge between the conductor and the insulating layer.
The present invention may be further configured in a preferred embodiment as: the first anti-static layer and the second anti-static layer are both made of polyvinyl chloride (PVC) material layers.
By adopting the technical scheme, the anti-static layer of the polyvinyl chloride PVC material has good anti-static performance and better anti-corrosion performance, and can prevent the cable from being corroded in the using process.
The present invention may be further configured in a preferred embodiment as: the electromagnetic signal shielding layer is arranged as a conductive rubber material layer.
By adopting the technical scheme, the conductive cable has good conductive performance and good electromagnetic signal shielding performance.
The present invention may be further configured in a preferred embodiment as: and a high flame-retardant layer is arranged outside the first insulating layer.
Through adopting above-mentioned technical scheme, when taking place the conflagration, can prevent the harm of flame to the cable effectively, and then the signal shielding layer in the protection cable.
The present invention may be further configured in a preferred embodiment as: and a water-resistant layer is arranged outside the high flame-retardant layer.
Through adopting above-mentioned technical scheme, in rainy day, can prevent effectively that the rainwater from getting into the cable, and then signal shielding layer and conductor in the protection cable.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the utility model adds the inner shielding layer between the conductor and the insulating layer, and the inner shielding layer and the conductor have the same potential, so that the electric field concentration between the conductor and the inner shielding layer can not occur; an electromagnetic signal shielding layer is coated outside the insulating layer to prevent electromagnetic signals between the cable cores from influencing each other; an outer shielding layer is added between the insulating layer and the electromagnetic signal shielding layer, and the outer shielding layer and the electromagnetic signal layer are equipotential, so that electric field concentration cannot occur between the insulating layer and the electromagnetic signal shielding layer;
2. the utility model discloses the ripple on well two cable cores is the same and mutually support together, has increased the space utilization in the cable, can hold more cable cores in making the same space.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Figure 2 is the structure schematic diagram of the cable core of the utility model.
In the figure, 1, a cable core, 11, a conductor, 12, an inner shielding layer, 13, a first antistatic layer, 14, a second insulating layer, 15, a second antistatic layer, 16, an outer shielding layer, 17, an electromagnetic signal shielding layer, 2, a filling member, 3, a first insulating layer, 4, a high flame retardant layer, 5 and a water-resistant layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, for the utility model discloses a high shielded cable for high-speed railway, including cable core 1, packing component 2, first insulation layer 3, high fire-retardant layer 4 and water blocking layer 5, there is three shape and the same cable core 1 of structure in the packing component 2, cable core 1 includes conductor 11, internal shield layer 12, first antistatic backing 13, second insulating layer 14, second antistatic backing 15, external shield 16 and electromagnetic signal shielding layer 17.
Referring to fig. 1 and 2, the conductor 11 is located at the innermost layer of the cable core 1, the conductor 11 is coated with an inner shielding layer 12, and the cross section of the inner shielding layer 12 is annular, so that the conductor 11 and the inner shielding layer 12 have the same potential, and thus no electric field concentration occurs between the conductor 11 and the inner shielding layer 12; the inner shield layer 12 is made of a semiconductor material layer, which has the functions of improving the electric field distribution and avoiding partial discharge between the conductor and the insulating layer.
Referring to fig. 1 and 2, the inner shielding layer 12 is coated with a first anti-static layer 13, and the cross section of the first anti-static layer 13 is annular, so as to prevent static electricity from being generated between the inner shielding layer 12 and the second insulating layer 14 and damage the inner shielding layer 12 and the second insulating layer 14; the first anti-static layer 13 is made of a polyvinyl chloride PVC material layer which has good anti-static performance and better anti-corrosion performance and can prevent the cable from being corroded in the using process.
Referring to fig. 1 and 2, the first anti-static layer 13 is coated with a second insulating layer 14, and the cross section of the second insulating layer 14 is annular; the second insulating layer 14 is coated with a second anti-static layer 15, the cross section of the second anti-static layer 15 is annular, the second anti-static layer 15 is made of a polyvinyl chloride PVC material layer, and the material layer has good anti-static performance and better anti-corrosion performance and can prevent the cable from being corroded in the using process.
Referring to fig. 1 and 2, the second anti-static layer 15 is coated with an outer shielding layer 16, and the cross section of the outer shielding layer 16 is annular, so that the outer shielding layer 16 and the electromagnetic signal shielding layer 17 are equipotential, and thus no electric field concentration occurs between the outer shielding layer 16 and the electromagnetic signal shielding layer 17; the outer shielding layer 16 is made of a semiconductor material layer, which has the functions of improving the electric field distribution and preventing the second insulating layer 14 from generating partial discharge with the electromagnetic signal shielding layer 17.
Referring to fig. 1 and 2, an electromagnetic signal shielding layer 17 is coated outside the outer shielding layer 16, and the cross section of the electromagnetic signal shielding layer 17 is annular, so that electromagnetic signals between cable cores are prevented from being influenced; the outer surface of the electromagnetic signal shielding layer 17 is provided with the corrugation, and the electromagnetic signal shielding layer 17 and the corrugation are integrally formed, so that the cable core 1 is convenient to fix, and the cable core 1 cannot slide relatively; the corrugations on the outer surfaces of the two cable cores 1 are identical in shape and are matched and clamped together, so that the space utilization rate in the cable is increased, and more cable cores 1 can be accommodated in the same space; the electromagnetic signal shielding layer 17 is made of a conductive rubber material layer, and the material layer has good conductive performance and good electromagnetic signal shielding performance.
Referring to fig. 1 and 2, a filling member 2 is filled outside a cable core 1, the filling member 2 is coated with a first insulating layer 3, the first insulating layer 3 is annular in cross section, the first insulating layer 3 is coated with a high flame retardant layer 4, and the high flame retardant layer 4 is annular in cross section, so that when a fire breaks out, the cable core 1 in the cable can be effectively prevented from being damaged by flame; a waterproof layer 5 is coated outside the high flame-retardant layer 4, so that rainwater can be effectively prevented from entering the cable in rainy days, and the cable core 1 in the cable is protected.
The implementation principle of the embodiment is as follows: referring to fig. 1 and 2, electromagnetic signals between the cable cores 1 are shielded by coating the second insulating layer 14 on the conductor 11 and coating the electromagnetic signal shielding layer 17 outside the insulating layer 14; the inner shielding layer 12 is added between the conductor 11 and the second insulating layer 14, so that the conductor 11 and the inner shielding layer 12 have the same electric potential, and electric field concentration does not occur between the conductor 11 and the inner shielding layer 12; the first anti-static layer 13 is added between the inner shielding layer 12 and the second insulating layer 14, so that the first insulating layer 14 and the inner shielding layer 12 are prevented from generating static electricity, and the inner shielding layer 12 and the first insulating layer 14 are prevented from being damaged; by adding the outer shielding layer 16 between the second insulating layer 14 and the electromagnetic signal shielding layer 17, the outer shielding layer 16 and the electromagnetic signal shielding layer 17 have the same electric potential, so that electric field concentration does not occur between the outer shielding layer 16 and the electromagnetic signal shielding layer 17; by adding the second anti-static layer 15 between the second insulating layer 14 and the outer shielding layer 16, static electricity generated by the second insulating layer 14 and the outer shielding layer 16 is prevented from damaging the second insulating layer 14 and the outer shielding layer 16; the filling member 2 is coated with the first insulating layer 3, and the high flame-retardant layer 4 is coated on the first insulating layer 3, so that the damage of flame to the cable can be effectively prevented, and the cable core 1 in the cable is protected; the waterproof layer 4 is coated on the high flame-retardant layer 3, so that rainwater can be effectively prevented from entering the cable, and the cable core 1 in the cable is protected.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a high shielded cable for high-speed railway which characterized in that: the cable comprises a cable core (1), a filling member (2) filled outside the cable core (1) and a first insulating layer (3) coated outside the filling member (2);
the cable core comprises an inner conductor (11), an inner shielding layer (12) coated on the conductor (11), a first anti-static layer (13) coated on the inner shielding layer (12), a second insulating layer (14) coated on the first anti-static layer (13), a second anti-static layer (15) coated in the second insulating layer (14), an outer shielding layer (16) coated on the second anti-static layer (15) and an electromagnetic signal shielding layer (17) coated on the outer shielding layer (16).
2. The high-shielding cable for high-speed rail according to claim 1, wherein: the outer surface of the electromagnetic signal shielding layer (17) is arranged to be corrugated.
3. The high-shielding cable for high-speed rail according to claim 1, wherein: the ripples on two cable cores (1) are the same and cooperate the joint together.
4. The high-shielding cable for high-speed rail according to claim 1, wherein: the inner shielding layer (12) and the outer shielding layer (16) are both made of semiconductor material layers.
5. The high-shielding cable for high-speed rail according to claim 1, wherein: the first anti-static layer (13) and the second anti-static layer (15) are both made of polyvinyl chloride (PVC) material layers.
6. The high-shielding cable for high-speed rail according to claim 1, wherein: the electromagnetic signal shielding layer (17) is arranged to be a conductive rubber material layer.
7. The high-shielding cable for high-speed rail according to claim 5, wherein: and a high flame-retardant layer (4) is arranged outside the first insulating layer (3).
8. The high-shielding cable for high-speed rail according to claim 7, wherein: and a water-resistant layer (5) is arranged outside the high flame-retardant layer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021159275.7U CN212061938U (en) | 2020-06-19 | 2020-06-19 | High-shielding cable for high-speed rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021159275.7U CN212061938U (en) | 2020-06-19 | 2020-06-19 | High-shielding cable for high-speed rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212061938U true CN212061938U (en) | 2020-12-01 |
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ID=73514283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021159275.7U Active CN212061938U (en) | 2020-06-19 | 2020-06-19 | High-shielding cable for high-speed rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212061938U (en) |
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2020
- 2020-06-19 CN CN202021159275.7U patent/CN212061938U/en active Active
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