CN113838610B - Electromagnetic shielding cable line crossing high-speed railway overhead - Google Patents
Electromagnetic shielding cable line crossing high-speed railway overhead Download PDFInfo
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- CN113838610B CN113838610B CN202111180257.6A CN202111180257A CN113838610B CN 113838610 B CN113838610 B CN 113838610B CN 202111180257 A CN202111180257 A CN 202111180257A CN 113838610 B CN113838610 B CN 113838610B
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01B9/00—Power cables
- H01B9/008—Power cables for overhead application
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
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Abstract
The application provides an electromagnetic shielding cable line for crossing high-speed railway overhead, the electromagnetic shielding cable line includes: a wire core assembly and an electromagnetic shielding layer arranged outside the wire core assembly; the electromagnetic shielding layer includes: anti-electromagnetic interference layer to and the bee cave cavity, the bee cave cavity is located the wire sinle silk constitutes with prevent between the electromagnetic interference layer, the bee cave cavity is confined cavity, and this application is through the electromagnetic shield layer that sets up, and electromagnetic shield layer includes anti-electromagnetic interference layer and bee cave cavity, and the bee cave cavity can seal the electromagnetic field of conductor in inclosed bee cave cavity, and the electromagnetic interference between isolated wire sinle silk and the high-speed train, and anti-electromagnetic interference layer prevents that external magnetic field from interfering with the inside electron of conductor, avoids causing the emergence of the serious accident of high-speed railway outage because the electromagnetic interference between wire and the high-speed train causes the temperature rise of power transmission cable, and then leads to.
Description
Technical Field
The application relates to the technical field of wires and cables, in particular to an electromagnetic shielding cable for crossing a high-speed railway overhead.
Background
At present, an overhead power transmission line for crossing a high-speed railway overhead contact line is generally an independent tension tower line at side frames at two ends of a high-speed railway, the high-speed railway overhead contact line is a power transmission line for supplying power to an electric locomotive and is a traction power supply system of a high-speed railway, high-voltage current is obtained from a contact network erected above the railway, so that continuous sufficient power is obtained, when a power transmission line is erected by a power supply unit, the power transmission line is erected above a high-speed train, the power transmission line is generally a high-voltage line, and the power transmission line is generally at a distance of about 6 meters from the overhead contact line.
The high-speed train is used as a quick and efficient transport tool, receives wide attention worldwide in recent years, not only improves the comprehensive transport capacity of a railway system and shortens the space-time distance between regions, but also effectively promotes the coordinated development of regional economy and society, the radiation range of an electromagnetic field generated by the high-speed train in the running process can reach 9-12 meters, and the electromagnetic interference generated by the high-speed train in the running process disturbs the directional movement of electrons in a power transmission cable, so that positrons and auxiliary electrons in a conductor are disordered to generate impact, and the temperature of the conductor is further increased; the power transmission effect is affected, and then a major accident of high-speed railway outage is caused, a mode of continuously lifting the power transmission cable is generally adopted, so that the height of the power transmission cable exceeds the radiation range of an electromagnetic field, but the solution method can greatly increase the capital investment cost, reduce the power supply reliability of a power supply enterprise and influence the economic benefit of the enterprise.
Disclosure of Invention
In view of the above, the application provides an electromagnetic shielding cable line for crossing a high-speed railway overhead, which solves the technical problem that the temperature of a power transmission cable is increased due to electromagnetic interference between the power transmission cable and a high-speed train in the prior art, so that serious accidents of high-speed railway outage are caused.
According to one aspect of the present application, an electromagnetic shield cable line for overhead crossing a high speed railway, the electromagnetic shield cable line comprising: a wire core assembly and an electromagnetic shielding layer arranged outside the wire core assembly; the electromagnetic shielding layer includes: the anti-electromagnetic interference layer and the bee cavity are positioned between the wire core component and the anti-electromagnetic interference layer, and the bee cavity is a closed cavity.
In one possible implementation, the bee cavity includes a body disposed outside of the conductor core composition, and a plurality of cavities disposed within the body.
In one possible implementation, the plurality of cavities are uniformly distributed around the conductor core component.
In one possible implementation manner, the electromagnetic interference preventing layer includes: the metal film layer is arranged on the outer side of the bee cavity; and the metal net layer is arranged on the outer side of the metal film layer.
In one possible implementation, the electromagnetic shielding cable includes a filler layer disposed between the bee cavity and the metal film layer.
In one possible implementation, the electromagnetic shielding cable further includes a cable outer jacket, the cable outer jacket being located outside the metal mesh layer.
In one possible implementation, the material of the electromagnetic interference shielding layer includes a reflective shielding material.
In one possible implementation, the reflective shielding material comprises a non-magnetic material.
In one possible implementation, the non-magnetic material includes any one or more of austenitic stainless steel, copper, and aluminum. In one possible implementation, the non-magnetic material is an austenitic stainless steel.
The utility model provides an electromagnetic shield cable for striding across high-speed railway aerial, constitute the outside through wire core and set up electromagnetic shield layer, electromagnetic shield layer is including preventing electromagnetic interference layer and bee cave cavity, prevent electromagnetic interference layer, reflect and absorb the electromagnetic interference that produces in the high-speed train operation, bee cave cavity is located wire core and constitutes and prevent between the electromagnetic interference layer, bee cave cavity is confined cavity, bee cave cavity can increase metal mesh wire and wire core insulating distance and alleviate the cable dead weight, can seal the conductor electromagnetic field in confined cavity, the electromagnetic field that stops high-speed train production is to the electromagnetic interference of power transmission cable, prevent to produce the temperature rise of the power transmission cable that the striking arouses owing to produce the unordered chaotic confusion of electromagnetic radiation source in the conductor in the electromagnetic field, and then the emergence of the serious accident of high-speed railway outage that leads to.
Drawings
Fig. 1 is a schematic structural diagram of an electromagnetic shielding layer of an electromagnetic shielding cable according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of an electromagnetic interference preventing layer and a honeycomb cavity of an electromagnetic shielding cable according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a cellular cavity structure of an electromagnetic shielding cable according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a metal mesh layer and a metal film layer of an electromagnetic shielding cable according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of an overall structure of an electromagnetic shielding cable according to an embodiment of the present disclosure;
fig. 6 is a cross-sectional view showing the whole structure of an electromagnetic shielding cable according to an embodiment of the present application;
fig. 7 is a perspective view of an electromagnetic shielding cable according to an embodiment of the present application.
Reference numerals illustrate: 1-an outer sheath of the cable; 2-a metal mesh layer; 3-a metal thin film layer; 4-a filler layer; 5-a bee cavity; 6-wire core composition; 7-an electromagnetic interference prevention layer; 8-electromagnetic shielding layer.
Detailed description of the preferred embodiments
In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back, top, bottom … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Furthermore, references herein to "an embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Summary of the application
The high-speed train is taken as a quick and efficient transport means, and receives wide attention worldwide in recent years, the comprehensive transport capacity of a railway system is improved, the space-time distance between regions is shortened, the coordinated development of regional economy and society is effectively promoted, a high-voltage current is obtained from a contact network erected above a railway in the running process of the high-speed railway, a power supply unit erects a high-voltage line above the high-speed train, the distance from the contact network is about 6 meters, the electromagnetic field bombardment electromagnetic field can be generated in the running process of the high-speed train, the radiation range of electromagnetic interference generated by the electromagnetic field bombardment electromagnetic field can reach 9-12 meters, the electromagnetic interference generated in the running process of the high-speed train can disturb the directional movement of electrons in a power transmission cable, the temperature of the overhead power transmission cable is increased, the over-temperature means that the thermal stress born by overhead wire equipment clamps and wire steel rivets is increased, the thermal stress is often alternately changed, the fatigue of the wire steel rivets can be caused, and the high-speed steel rivets break in time due to the fatigue time of the material can be prolonged along with the fatigue time of the material.
The free electrons in the power transmission cable conductor do regular directional movement under the action of the electric field force, and the positive electrons and the auxiliary electrons in the conductor regularly flow freely, if a new electromagnetic radiation source (can be a certain frequency or full-frequency noise) or the bombardment of another electromagnetic field to the original electromagnetic field exists in the electromagnetic field, the current electromagnetic sequence can be changed, so that the positive electrons and the auxiliary electrons in the conductor are disordered and disordered to generate impact, and the temperature of the conductor is increased; the power transmission effect is affected, and then serious accidents of high-speed railway shutdown are caused.
In the prior art, in order to solve the problem of temperature rise of a high-voltage power transmission line, a power transmission cable is usually continuously elevated and exceeds the radiation range of an electromagnetic field generated in the running process of a high-speed train, but the solution method can greatly increase the capital investment cost, reduce the power supply reliability of a power supply enterprise and influence the economic benefit of the enterprise.
The application provides an electromagnetic shielding cable line for overhead crossing a high-speed railway. Through the double-deck electromagnetic shield structure outside wire core constitution 6, bee cave cavity 5 and electromagnetic interference prevention layer 7, bee cave cavity 5 not only seals the electromagnetic interference that produces in the operation of high-speed train in bee cave cavity 5, also increased insulating distance, electromagnetic interference prevention layer 7 shields the electromagnetic interference that produces in the operation of high-speed train outside, the energy when the electromagnetic field that other part was not shielded propagates in the space is absorbed, electromagnetic shield is isolated outside the wire under the combined action of bee cave cavity 5 and electromagnetic interference prevention layer 7, thereby improve the security of using of electromagnetic shield cable, thereby improve the life cycle of electromagnetic shield cable, reduced the emergence of the circumstances that leads to the outage of high-speed railway because the temperature of high-pressure power transmission line rises.
Having briefly introduced the implementation principles of the present application, a technical solution in an embodiment of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present application.
Fig. 1 is a schematic structural diagram of an electromagnetic shielding layer of an electromagnetic shielding cable according to an embodiment of the present application, as shown in fig. 1, an electromagnetic shielding cable for crossing a high-speed railway overhead, including a wire core component 6 and an electromagnetic shielding layer 8 disposed on an outer wall of the wire core component 6, where the electromagnetic shielding layer 8 is a double-layer electromagnetic shielding design, the present application is a cable with an external electromagnetic interference resistance formed by forming a shielding layer on a transmission cable wire core component 6, the double-layer shielding of the present application plays an effect of reinforcing and shielding external electromagnetic interference, the electromagnetic interference resistance layer shields electromagnetic waves first, and the bee cavity 5 increases an insulation distance, so that propagation of electromagnetic waves is delayed, and the bee cavity 5 can simultaneously seal electromagnetic waves in a cavity, so that positrons and auxiliary electrons in a power transmission cable conductor are regularly free flowing, and an existing electromagnetic sequence cannot be changed.
Fig. 2 is a schematic structural diagram of an electromagnetic interference preventing layer and a honeycomb cavity of an electromagnetic shielding cable according to an embodiment of the present application, and as shown in fig. 2, an electromagnetic shielding layer 8 includes: the anti-electromagnetic interference layer 7 and the bee cavity 5 are arranged on the outer wall of the wire core component 6 in a sleeved mode, the anti-electromagnetic interference layer 7 is arranged on the outer wall of the bee cavity 5 in a sleeved mode, the bee cavity 5 is located between the wire core component 6 and the anti-electromagnetic interference layer 7, the bee cavity 5 is a closed cavity, on one hand, the insulation distance between the anti-electromagnetic interference layer 7 and the wire core component 6 is increased, the self weight of a power transmission cable can be reduced, on the other hand, an electromagnetic field generated by induction interference voltage of the outside to the wire core component 6 is sealed in the bee cavity 5, electromagnetic interference between a conductor electromagnetic field and a high-speed train electromagnetic field is prevented, invasion of external electromagnetic noise is prevented, electromagnetic interference between the conductor electromagnetic field and the high-speed train electromagnetic field is prevented, interference of the external magnetic field to electrons inside the conductor is prevented, and a new electromagnetic radiation source in the conductor and auxiliary electrons are prevented from being disordered to cause temperature rise caused by collision.
The temperature rise caused by the impact generated by disordered and disordered positron and auxiliary electrons in the conductor can cause the increase of the thermal stress born by the overhead conductor equipment wire clamp and the conductor steel rivet, the increase of the thermal stress can lead to the fatigue of the conductor steel rivet material, the fatigue time of the conductor steel rivet material is prolonged, if the conductor steel rivet material is not timely processed, the tension-resistant conductor steel rivet material is broken, and serious accidents of high-speed railway shutdown are caused.
The electromagnetic interference preventing layer 7 is sleeved on the outer wall of the bee cavity 5, the electromagnetic interference preventing layer 7 is used for shielding electromagnetic field energy, electromagnetic shielding is actually used for limiting electromagnetic energy transmission from one side space to the other side space of the shielding material, when the electromagnetic wave propagates to reach the surface of the shielding material, attenuation is usually carried out by different mechanisms in 3, namely reflection attenuation at an incidence surface, attenuation of electromagnetic wave which enters the shielding body without being reflected by the material is absorbed by the material, and multiple reflection attenuation inside the shielding body is carried out. When the electromagnetic wave reaches the surface of the electromagnetic interference preventing layer 7 of the shielding body, the energy which is generated by the electromagnetic interference preventing layer 7 on the incident wave and enters the shielding body without being reflected by the surface is attenuated by the shielding material in the process of forward propagation in the body, namely the electromagnetic interference preventing layer 7 absorbs the energy when the electromagnetic field propagates in the space, so that the electromagnetic interference between the wire and the high-speed train is isolated.
The double-layer shielding adopted by the reinforced shielding effect in the application has the action mechanism that the double-layer shielding layer of the electromagnetic interference prevention layer 7 and the bee nest cavity 5 is used for isolating the induction interference voltage of the outside to the lead, so that the occurrence of major accidents of the shutdown of the high-speed railway is reduced, and the safety of the high-speed railway is improved.
Fig. 3 is a schematic diagram of a cavity structure of an electromagnetic shielding cable according to an embodiment of the present application, as shown in fig. 3, the cavity 5 includes a body disposed outside the conductor core 6, and a plurality of cavities disposed in the body, the cavity 5 is disposed on an outer wall of the conductor core 6, the cavities are uniformly distributed around the conductor core 6, the cavities in the cavity 5 can seal a conductor electromagnetic field in the sealed cavity, the cavities in the cavity 5 are uniformly distributed to uniformly seal electromagnetic fields generated in all directions of the conductor in the sealed cavity, so as to homogenize distribution of an electric field, prevent external electromagnetic noise from being immersed, prevent interference of the external magnetic field on electrons in the conductor, and solve a problem of temperature rise caused by impact due to disordered and disordered positron and auxiliary electrons in the conductor caused by a new electromagnetic radiation source in the electromagnetic field.
It should be understood that the present application does not limit the specific number of cavities, so long as the cavities can enclose the electromagnetic field generated by the conductors in all directions in the closed cavity, so as to prevent external electromagnetic noise from being immersed, when a new electromagnetic radiation source is generated in the electromagnetic field, positrons and auxiliary electrons in the conductors are ordered, and the temperature of the overhead conductor cannot be raised, and the specific number of the cavities can be determined according to specific needs.
It should be understood that the shape of the cavity may be circular or elliptical, and the specific shape of the cavity is not limited in this application, so long as the cavity can block the immersion of external electromagnetic noise, and can prevent the external magnetic field from interfering with electrons in the conductor.
It should also be appreciated that in order to prevent moisture and moisture from entering the cavity from the outside space, ammonia gas may be injected into the cavity, which serves to block the penetration of external electromagnetic noise while maintaining the self weight of the power transmission cable, and to enclose the external electromagnetic field within the cavity.
Fig. 4 is a schematic structural diagram of a metal mesh layer and a metal film layer of an electromagnetic shielding cable according to an embodiment of the present disclosure; as shown in fig. 4, the electromagnetic interference preventing layer 7 comprises a metal film layer 3 and a metal net layer 2, wherein the metal film layer 3 is arranged outside the bee cavity 5; the metal net layer 2 is arranged on the outer side of the metal film layer 3, the cable with the capability of resisting external electromagnetic interference is formed in a mode of externally adding an electromagnetic interference prevention layer 7 to a transmission cable, the electromagnetic interference prevention layer 7 adopts metal wires woven into a net shape and adopts the metal film layer to wrap the outside of the wire core component 6 for isolating electromagnetic interference between a wire and a high-speed train,
the electromagnetic wave is an oscillating particle wave which is derived and emitted in space by an electric field and a magnetic field which are in phase and perpendicular to each other, and is an electromagnetic field which propagates in a wave form, reflection and refraction can occur when the electromagnetic wave encounters different mediums in the propagation process, and the conductivity is relatively large because the metal body contains a large amount of free electrons. So that the partial loss of the refracted wave is great and the reflection is also increased. So the electromagnetic wave hardly penetrates the metal body, and the application is established at wire core constitution 6 through adopting metal mesh layer 2 and metal film layer 3 cover, and when the electromagnetic interference of external production, metal mesh layer 2 and metal film layer 3 can play the effect of shielding external electromagnetic interference, and isolated electric conduction and the electromagnetic interference between the high-speed train.
Fig. 5 is a schematic diagram of an overall structure of an electromagnetic shielding cable according to an embodiment of the present disclosure; as shown in fig. 5, the structure of the power transmission cable of the present application is, from outside to inside, the cable outer protective layer 1, the metal mesh layer 2, the metal film layer 3, the filler layer 4, the cavity 5 and the wire core component 6, when the electromagnetic wave generated in the running process of the high-speed train reaches the power transmission cable, the metal mesh layer 2 and the metal film layer 3 on the outer layer of the power transmission cable reflect the electromagnetic wave, the unreflected electromagnetic wave continues forward, and is absorbed by the cavity 5 and seals the electromagnetic wave in the cavity 5, and meanwhile, the cavity increases the distance between the metal film layer 3 and the wire core component 6, and also can delay the speed of the electromagnetic wave to continue electromagnetic interference to the wire core component 6.
Fig. 6 is a cross-sectional view of an electromagnetic shielding cable according to an embodiment of the present application, as shown in fig. 6, and in combination with fig. 7, the electromagnetic shielding cable further includes a cable outer sheath 1, where the cable outer sheath 1 is located outside the metal mesh layer 2; and the packing layer 4, the packing layer 4 sets up between bee cave cavity 5 and metal film layer 3, and cable outer sheath 1 is the polyethylene insulating layer, and the cable outer sheath sets up at electromagnetic shield cable's outermost, and when the installation of electric electromagnetic shield cable operation in various different environment, can play the effect of protection to the insulating layer, when the wire core of shielded cable is a plurality of, through adding packing layer 4 for the cable external diameter is round relatively, in order to do benefit to band, crowded sheath.
It should be understood that the filler in the filler layer 4 may be nylon or PVC, so long as the filler is a light material and the outer diameter of the cable is relatively round, which is beneficial to wrapping and extruding the sheath.
In one possible implementation, the material of the anti-electromagnetic interference layer 7 includes a reflective shielding material, the electromagnetic field shielding is a measure of preventing electromagnetic field from propagating in space by using a shielding body, when the electromagnetic wave reaches the surface of the shielding body, the electromagnetic wave can be reflected due to the discontinuity of impedance at the interface between air and the reflective shielding material, the reflective shielding material has a certain thickness, the discontinuity at the interface is required, the energy which is not reflected by the surface and enters the shielding body is absorbed by the reflective shielding material in the process of propagating forward in the body, the material of the anti-electromagnetic interference layer 7 in the application includes the reflective shielding material, the electromagnetic wave generated by the outside can be reflected off, and the electromagnetic wave which is not reflected by the surface can be absorbed by the reflective shielding material, so that the electromagnetic wave can be prevented from continuously passing through the anti-electromagnetic interference layer 7, and the electromagnetic interference effect on the wire core composition 6 of the cable can not be generated.
It should be understood that the specific thickness of the reflection shielding material, that is, the electromagnetic interference preventing layer 7, is not limited in this application, so long as the metal mesh layer 2 and the metal thin film layer 3 of the electromagnetic interference preventing layer 7 can absorb electromagnetic waves generated from the outside or electromagnetic waves that are not reflected, and the specific number of the electromagnetic interference preventing layers 7 may be determined according to specific needs.
In one possible implementation, the reflective shielding material comprises a non-magnetic material. The electromagnetic interference preventing layer 7 is formed by taking a non-magnetic material as a reflection shielding material, and at present, conductive paint, metal meltallizing, vacuum gold plating, cathode sputtering, metal foil pasting, silver reduction, electroless gold plating, conductive plastic, metal net adding and the like can be adopted as the reflection shielding material.
In one possible implementation manner, the non-magnetic material includes any one or more combinations of austenitic stainless steel, copper and aluminum, the austenitic stainless steel, copper and aluminum are adopted as the materials of the electromagnetic interference prevention layer 7, the austenitic stainless steel is non-magnetic and has high toughness and plasticity, but has lower strength, and can play a role in shielding and absorbing electromagnetic waves due to the properties of high toughness, plasticity and low strength, alternatively, copper or aluminum can be adopted as the non-magnetic material, the electromagnetic shielding material with good performance has higher conductivity and permeability, some metals or alloys are good conductors of electricity, such as copper aluminum and the like, and the copper or aluminum is adopted as the electromagnetic interference prevention layer 7 to have good electromagnetic interference prevention effect.
In a possible implementation mode, the non-magnetic material is made of austenitic stainless steel, the austenitic stainless steel is stainless steel with an austenitic structure at normal temperature, when Cr in the steel is about 18%, ni is 8% -10%, and C is about 0.1%, the austenitic stainless steel has a stable austenitic structure, the austenitic stainless steel has the properties of high toughness, plasticity and low strength, the effect of shielding and absorbing electromagnetic waves can be achieved, the metal mesh layer 2 and the metal film layer 3 made of the austenitic stainless steel are coated outside the wire core composition 6, the influence of an electromagnetic field on the composition of the wire core 6 can be restrained, so that an interference field forms vortex in a shielding body and generates reflection on an interface between the shielding body and a protected space, the field intensity value of the interference field in the protected space is greatly weakened, and the shielding effect is achieved.
The electromagnetic shielding cable is a cable with external electromagnetic interference resistance formed by adding a shielding layer on the transmission cable. The shielding aims at preventing external electromagnetic fields from entering a certain area to be protected, and the shielding principle is to counteract the influence of external fields by utilizing the effect generated by the induction of the shielding on the external fields. The electromagnetic field shielding is a measure for preventing electromagnetic fields from propagating in space by using the shielding body, and in the method, through the arrangement of the electromagnetic interference prevention layer and the bee cavity 5, electromagnetic interference between the wire core 6 and the high-speed train is isolated, and meanwhile, the electromagnetic fields of the conductors are sealed in the bee cavity 5, so that the electromagnetic interference generated between the electromagnetic fields of the conductors and the electromagnetic fields of the high-speed train is prevented, and serious accidents of high-speed railway outage caused by the temperature rise of the power transmission cable due to the electromagnetic interference between the wires and the high-speed train are avoided.
The foregoing description of the preferred embodiments is provided for the purpose of illustration only, and is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. An electromagnetic shield cable line overhead across a high-speed railway, the electromagnetic shield cable line comprising:
conductor core assembly (6)
An electromagnetic shielding layer (8) arranged outside the wire core component (6);
the electromagnetic shielding layer (8) comprises:
an electromagnetic interference prevention layer (7)
The bee cavity (5) is positioned between the wire core component (6) and the electromagnetic interference prevention layer (7), the bee cavity (5) is a closed cavity, the bee cavity (5) comprises a body arranged outside the wire core component (6) and a plurality of cavities arranged in the body, and the cavities are uniformly distributed around the wire core component (6) so as to uniformly seal electromagnetic fields generated in all directions of the wire core component (6) in the cavities; wherein, the electromagnetic interference prevention layer (7) and the bee cavity (5) construct a double-layer electromagnetic shielding structure.
2. An electromagnetic shield cable line for overhead crossing high-speed railways as defined in claim 1, wherein: the electromagnetic interference preventing layer (7) includes:
the metal film layer (3), the said metal film layer (3) is set up in the outside of the said bee cavity (5);
and the metal net layer (2), and the metal net layer (2) is arranged on the outer side of the metal film layer (3).
3. An electromagnetic shield cable line for overhead crossing high-speed railways as defined in claim 2, wherein: the electromagnetic shielding cable comprises a filler layer (4), and the filler layer (4) is arranged between the bee cavity (5) and the metal film layer (3).
4. An electromagnetic shield cable line for overhead crossing high-speed railways as defined in claim 2, wherein: the electromagnetic shielding cable further comprises a cable outer protective layer (1), and the cable outer protective layer (1) is positioned outside the metal mesh layer (2).
5. An electromagnetic shielding cable for overhead crossing high-speed railways according to claim 1 or 2, characterized in that the material of the electromagnetic interference shielding layer (7) comprises a reflective shielding material.
6. An electromagnetic shield cable as recited in claim 5, wherein said reflective shielding material comprises a non-magnetic material.
7. An electromagnetic shield cable as recited in claim 6, wherein the non-magnetic material comprises any one or more of austenitic stainless steel, copper, and aluminum.
8. An electromagnetic shield cable as recited in claim 7, wherein said non-magnetic material is austenitic stainless steel.
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| CN202111180257.6A CN113838610B (en) | 2021-10-11 | 2021-10-11 | Electromagnetic shielding cable line crossing high-speed railway overhead |
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| CN113838610B true CN113838610B (en) | 2024-03-19 |
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Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004207085A (en) * | 2002-12-26 | 2004-07-22 | Yazaki Corp | Electromagnetic shield cable and electromagnetic shield type single core twisted cable |
| CN201749706U (en) * | 2010-05-05 | 2011-02-16 | 深圳市联嘉祥科技股份有限公司 | Semiconductive EVA plastic screening flexible cable |
| CN202363830U (en) * | 2011-11-19 | 2012-08-01 | 杭州信宇塑业有限公司 | Cellular shielding communication cable tube |
| CN204314346U (en) * | 2014-09-03 | 2015-05-06 | 公安部第三研究所 | Electromagnetic screen in radio frequency testing |
| CN204632382U (en) * | 2015-05-27 | 2015-09-09 | 东莞市万丰科技有限公司 | Medical cable |
| CN205984335U (en) * | 2016-06-20 | 2017-02-22 | 常州工学院 | A locomotive shielded cable for wisdom traffic |
| CN206379206U (en) * | 2017-02-08 | 2017-08-04 | 广州坤开机电设备有限公司 | A kind of high temperature resistant and jamproof cable |
| CN206741985U (en) * | 2017-02-17 | 2017-12-12 | 佛山市佳视网络科技有限公司 | A kind of electromagnetic masking multicore cable |
| KR20180012440A (en) * | 2016-07-27 | 2018-02-06 | 김열호 | Power cable, and manufacturing method of the same |
| CN207503715U (en) * | 2018-04-03 | 2018-06-15 | 黄周平 | A kind of urban track traffic moves control composite cable with brass wire shielding |
| CN208141912U (en) * | 2018-05-02 | 2018-11-23 | 扬州曙光电缆股份有限公司 | A kind of high Anti-amyloid-β antibody special cable of military industry equipment |
| CN208174181U (en) * | 2018-06-01 | 2018-11-30 | 焦作市富泉塑胶有限公司 | A kind of reinforced PVC electromagnetic shielding penetration pipe of metal wire |
| CN208753006U (en) * | 2018-09-13 | 2019-04-16 | 广州市文德电线电缆有限公司 | A kind of shielding flame retardant type power supply control cable |
| CN208873515U (en) * | 2018-09-14 | 2019-05-17 | 华东师范大学 | A kind of electromagnetic shielded cable |
| CN209000611U (en) * | 2018-10-19 | 2019-06-18 | 云南巨力电缆股份有限公司 | A kind of civil environment-friendlycotton sheath cotton covered wire |
| CN210743618U (en) * | 2019-12-30 | 2020-06-12 | 鹰潭市锦海电线电缆有限公司 | Cable conductor with cavity structure inside |
| CN211350178U (en) * | 2020-03-26 | 2020-08-25 | 深圳市博艾维科技有限公司 | Novel shielding power line with dampproofing function |
| CN211957247U (en) * | 2020-04-16 | 2020-11-17 | 天津全汇聚能科技发展有限公司 | Communication cable with good shielding effect |
| CN212342327U (en) * | 2020-06-02 | 2021-01-12 | 安徽明福电缆有限公司 | Wear-resistant cable with framework structure |
| CN213211755U (en) * | 2020-10-15 | 2021-05-14 | 扬州亿海物探装备有限公司 | High strength cable with shielding layer |
| CN213988342U (en) * | 2020-12-02 | 2021-08-17 | 深圳市永隆信科技有限公司 | High-temperature-resistant composite insulated wire |
| CN214226567U (en) * | 2021-03-29 | 2021-09-17 | 安徽上缆仪表集团股份有限公司 | Anti-electromagnetic interference wear-resistant cable |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10039274A1 (en) * | 2000-08-11 | 2002-02-21 | Alcatel Sa | Temperature resistant communication cable |
-
2021
- 2021-10-11 CN CN202111180257.6A patent/CN113838610B/en active Active
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004207085A (en) * | 2002-12-26 | 2004-07-22 | Yazaki Corp | Electromagnetic shield cable and electromagnetic shield type single core twisted cable |
| CN201749706U (en) * | 2010-05-05 | 2011-02-16 | 深圳市联嘉祥科技股份有限公司 | Semiconductive EVA plastic screening flexible cable |
| CN202363830U (en) * | 2011-11-19 | 2012-08-01 | 杭州信宇塑业有限公司 | Cellular shielding communication cable tube |
| CN204314346U (en) * | 2014-09-03 | 2015-05-06 | 公安部第三研究所 | Electromagnetic screen in radio frequency testing |
| CN204632382U (en) * | 2015-05-27 | 2015-09-09 | 东莞市万丰科技有限公司 | Medical cable |
| CN205984335U (en) * | 2016-06-20 | 2017-02-22 | 常州工学院 | A locomotive shielded cable for wisdom traffic |
| KR20180012440A (en) * | 2016-07-27 | 2018-02-06 | 김열호 | Power cable, and manufacturing method of the same |
| CN206379206U (en) * | 2017-02-08 | 2017-08-04 | 广州坤开机电设备有限公司 | A kind of high temperature resistant and jamproof cable |
| CN206741985U (en) * | 2017-02-17 | 2017-12-12 | 佛山市佳视网络科技有限公司 | A kind of electromagnetic masking multicore cable |
| CN207503715U (en) * | 2018-04-03 | 2018-06-15 | 黄周平 | A kind of urban track traffic moves control composite cable with brass wire shielding |
| CN208141912U (en) * | 2018-05-02 | 2018-11-23 | 扬州曙光电缆股份有限公司 | A kind of high Anti-amyloid-β antibody special cable of military industry equipment |
| CN208174181U (en) * | 2018-06-01 | 2018-11-30 | 焦作市富泉塑胶有限公司 | A kind of reinforced PVC electromagnetic shielding penetration pipe of metal wire |
| CN208753006U (en) * | 2018-09-13 | 2019-04-16 | 广州市文德电线电缆有限公司 | A kind of shielding flame retardant type power supply control cable |
| CN208873515U (en) * | 2018-09-14 | 2019-05-17 | 华东师范大学 | A kind of electromagnetic shielded cable |
| CN209000611U (en) * | 2018-10-19 | 2019-06-18 | 云南巨力电缆股份有限公司 | A kind of civil environment-friendlycotton sheath cotton covered wire |
| CN210743618U (en) * | 2019-12-30 | 2020-06-12 | 鹰潭市锦海电线电缆有限公司 | Cable conductor with cavity structure inside |
| CN211350178U (en) * | 2020-03-26 | 2020-08-25 | 深圳市博艾维科技有限公司 | Novel shielding power line with dampproofing function |
| CN211957247U (en) * | 2020-04-16 | 2020-11-17 | 天津全汇聚能科技发展有限公司 | Communication cable with good shielding effect |
| CN212342327U (en) * | 2020-06-02 | 2021-01-12 | 安徽明福电缆有限公司 | Wear-resistant cable with framework structure |
| CN213211755U (en) * | 2020-10-15 | 2021-05-14 | 扬州亿海物探装备有限公司 | High strength cable with shielding layer |
| CN213988342U (en) * | 2020-12-02 | 2021-08-17 | 深圳市永隆信科技有限公司 | High-temperature-resistant composite insulated wire |
| CN214226567U (en) * | 2021-03-29 | 2021-09-17 | 安徽上缆仪表集团股份有限公司 | Anti-electromagnetic interference wear-resistant cable |
Non-Patent Citations (3)
| Title |
|---|
| 一种高压输电线路密闭金属空间电磁防护装置设计;沈涛;;机电信息;20200715(第20期);全文 * |
| 屏蔽结构完整性及防护措施;刘妙兰;;电子工艺技术(第07期);全文 * |
| 电磁干扰屏蔽技术(一);Peter.S.Grant;陈蕃;;电子工艺技术(第05期);全文 * |
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