CN220085712U - Low smoke zero halogen signal cable - Google Patents
Low smoke zero halogen signal cable Download PDFInfo
- Publication number
- CN220085712U CN220085712U CN202320062421.1U CN202320062421U CN220085712U CN 220085712 U CN220085712 U CN 220085712U CN 202320062421 U CN202320062421 U CN 202320062421U CN 220085712 U CN220085712 U CN 220085712U
- Authority
- CN
- China
- Prior art keywords
- signal cable
- low smoke
- zero halogen
- shielding layer
- cable according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000779 smoke Substances 0.000 title claims abstract description 28
- 229910052736 halogen Inorganic materials 0.000 title claims description 19
- 125000005843 halogen group Chemical group 0.000 title claims 11
- 230000007935 neutral effect Effects 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000003063 flame retardant Substances 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 34
- 239000011324 bead Substances 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 238000005253 cladding Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 235000019504 cigarettes Nutrition 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 35
- 239000011247 coating layer Substances 0.000 abstract description 7
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract description 3
- 238000009954 braiding Methods 0.000 abstract description 2
- 150000002367 halogens Chemical group 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a low-smoke halogen-free signal cable, which belongs to the technical field of cables and comprises a halogen-free low-smoke flame-retardant outer sheath, wherein a coating layer is arranged in the outer sheath, a first shielding layer is arranged in the coating layer, the first shielding layer is of a metal net structure, outer leads are arranged at intervals on the first shielding layer, the outer leads are of metal wire braiding structures and are flat, the outer ends of the outer leads outwards extend out of the coating layer and the outer sheath, connecting sheets are arranged at the outermost ends of the outer leads, heat collecting sleeves are correspondingly arranged at the outer leads, the exposed parts of the outer leads at the outer sheath are bonded and sealed at the outer wall of the outer sheath, parting strips are arranged in the coating layer, an inner cavity is divided into a plurality of neutral gears by the parting strips, wire cores are arranged at the neutral gears, second shielding layers are arranged on the outer walls of the wire cores, and connecting wires are arranged between the second shielding layers and the first shielding layers at intervals.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to a low-smoke halogen-free signal cable.
Background
The traditional PVC (polyvinyl chloride) wire is characterized in that all materials do not contain halogen, the smoke amount released during combustion is very small, the halogen-free low-smoke flame-retardant wire and cable is characterized in that all materials do not contain halogen, and the smoke amount released during combustion is very small.
Because in urban rail transit, such as subway systems or inter-city railway systems, the space is relatively closed, high requirements are put on fire safety, meanwhile, power transmission, communication, video transmission, digital transmission, electric control and the like used in the system are carried out by bundling more cables, in the practical application process, the installation is complicated, the occupied space of a plurality of cables corresponding to different functions is extremely large, the protection requirements are very strict, and most importantly, the cables with different functions can generate electromagnetic interference in the working process, so that equipment operation faults are caused.
Disclosure of Invention
The utility model aims to provide a low-smoke halogen-free signal cable so as to improve the integration degree and shielding effectiveness of the rail transit signal cable and reduce the smoke quantity released during combustion.
In order to achieve the above object, the technical scheme of the present utility model is as follows:
the utility model provides a low smoke and zero halogen signal cable, includes the fire-retardant oversheath of no steamed low smoke and zero halogen, and the oversheath is inside to be arranged the coating, and the inside of coating is equipped with first shielding layer, first shielding layer is metal network structure, and first shielding layer interval arrangement has the outer lead, the outer lead is metal silk thread braided structure to be flat, and its outer end outwards extends coating and oversheath to be equipped with the connection piece in outer end department, the corresponding heat-collecting sleeve that has arranged in outer lead department, the heat-collecting sleeve seals the outer part at the oversheath of outer lead, laminating in the outer wall department of oversheath, the inside of coating is equipped with the parting bead, the parting bead separates the inner chamber into a plurality of neutral gear, the core has been arranged to the neutral gear department, the second shielding layer has been arranged to the core outer wall, the interval has the connecting wire between second shielding layer and the first shielding layer.
Further, the outer sheath is provided with a reinforcing ring at the corresponding position of the outer lead.
Further, the neutral gear is four, and the arranged wire cores are respectively an electric power transmission unit, a digital transmission unit, a video transmission unit and an electric control unit.
Further, the outer lead is a copper wire braided structure.
Furthermore, the parting bead is made of insulating rubber, and the cross section of the parting bead is of an X-shaped structure.
Furthermore, the inner wall of the cladding layer and the side surface of the parting bead end are in a fusion-bonding fixing structure.
Further, an insulating inner sheath is extruded and arranged at the center of the parting bead.
Further, adjacent outer leads are spaced apart by a distance of 15 to 25 meters.
Further, the connecting wire is a flat braided wire.
Further, the connecting lines are in an arc-shaped arrangement structure.
Compared with the prior art, the utility model has the beneficial effects that:
according to the scheme, through the arrangement of the four equal division bars, the power transmission unit, the digital transmission unit, the video transmission unit and the electric control unit can be effectively separated and prevented from magnetic field interference, and the power transmission unit, the digital transmission unit, the video transmission unit and the electric control unit can be laid in a bundle for a rail transit vehicle, compared with the prior art, the installation is simple, the occupied space of a plurality of cables corresponding to different functions is extremely small, and the protection is very important, because the cables with different functions can not generate electromagnetic interference in the working process, the operation safety of equipment can be ensured, and various accident probabilities are reduced;
in the scheme, the first shielding layer and the second shielding layer are used for electromagnetic isolation, so that the electromagnetic radiation and interference generated by the external environment and the internal work can be reduced to the minimum, the working stability of the cable is greatly improved, meanwhile, the first shielding layer and the second shielding layer are connected through the connecting wire, and the first shielding layer can be connected with the grounding end or the grounding connecting wire through the outer lead, so that the shielding efficiency and the shielding stability are greatly improved;
the low-smoke halogen-free signal cable is used as a main cable or a standby cable, adopts a low-smoke halogen-free outer sheath structure, is compact in structure, is convenient to arrange and lay, has excellent shielding effectiveness, and has excellent popularization significance.
Drawings
Fig. 1 is a schematic overall structure of a preferred embodiment of the present solution.
Fig. 2 is a schematic view of an external connection structure of the outer lead.
Fig. 3 is a schematic view of the layered structure of the cable.
Fig. 4 is a schematic cross-sectional structural arrangement of a cable.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 4, a low smoke zero halogen signal cable comprises a halogen-free low smoke flame-retardant outer sheath 1, wherein a coating layer 2 is arranged inside the outer sheath, a first shielding layer 3 is arranged inside the coating layer, the first shielding layer 3 is of a metal net structure, a stable shielding structure can be formed inside the first shielding layer, outer leads 31 are arranged on the outer sheath 2 at intervals, the outer leads 31 are of a flat copper wire braiding structure, a certain flexibility is achieved, the rear ends of the outer leads 31 are electrically connected with the first shielding layer 3, connecting pieces 32 are arranged at the outer ends of the outer leads 31, mounting holes are formed in the centers of the connecting pieces 32 and are used for being connected with a grounding end or a grounding connecting line, a circle of reinforcing rings 34 are arranged at positions corresponding to the outer leads 31 in the outer sheath 1, so that structural strength is improved, in an initial state, the outer leads 31 and the connecting pieces 32 are attached to the outer walls of the outer sheath 1, heat-collecting sleeves 33 are arranged outside the outer leads 31, the outer exposed parts of the outer leads of the outer sheaths 1 are attached and sealed to the outer walls of the outer sheaths 1, the whole cable is well sealed, and the cable is guaranteed to be placed at a proper distance of 25 m, and the distance between the outer leads 31 and the right side of the cable is guaranteed.
The inside of the cladding layer 2 is provided with the parting bead 5, the parting bead 5 is insulating rubber material, the cross section of the parting bead 5 is of an X-shaped structure, the cavity is divided into four neutral gears by the parting bead 5, and the inner wall of the cladding layer 2 and the end side face of the parting bead 5 are welded and fixed, so that the four neutral gears have good insulating separation effect, meanwhile, the insulating inner sheath 50 is extruded and arranged at the center of the parting bead 5, the insulating inner sheath 50 has good flexibility, and the parting bead 5 can deform at the insulating inner sheath 50 to a certain extent when being bent and extruded, so that the whole deflection of a cable can be improved, the suspension, the pipe penetrating and the lead operation are facilitated, the extrusion of an inner unit is also facilitated to be relieved, and the working stability of the cable is improved.
The four neutral gears separated and insulated by the coating layer 2 and the parting bead 5 are respectively provided with a power transmission unit 51, a digital transmission unit 52, a video transmission unit 53 and an electrical control unit 54, wherein the power transmission unit 51 can provide power support for the operation of equipment, the digital transmission unit supports digital transmission structures such as a network cable or a coaxial cable, the video transmission unit 53 supports transmission of digital or analog signals such as the network cable, the coaxial cable or a video signal line, and the electrical control unit 54 supports transmission structures such as the network cable or the control line;
the second shielding layer 6 is arranged on the outer walls of the power transmission unit 51, the digital transmission unit 52, the video transmission unit 53 and the electric control unit 54, the shielding layer 6 can be arranged on the outer wall of each wire core in a mode of winding or cladding a metal film, the interference signals generated in the shielding layer can be shielded, and the external interference signals can be shielded, so that the stability of data transmission is ensured; in order to improve the shielding effect, electrical connection is made between the second shielding layer 6 and the first shielding layer 3 through the connection wire 6, the connection wire 6 is a flat braided wire, and the layer arc arrangement structure, so that a stable connection structure can be ensured when the cable is properly bent.
In summary, the arrangement of the four equal division bars can effectively separate the electric power transmission unit, the digital transmission unit, the video transmission unit and the electric control unit from each other and prevent magnetic field interference, and the electric power transmission unit, the digital transmission unit, the video transmission unit and the electric control unit can be laid in a bundle by one cable for the rail transit vehicle.
In this scheme, carry out electromagnetic isolation through first shielding layer and second shielding layer, can ensure that the electromagnetic radiation and the interference that external environment and internal work produced reduce to the minimum, thereby improve cable job stabilization nature greatly, be connected through the connecting wire between first shielding layer and the second shielding layer simultaneously, and first shielding layer can be connected with ground connection or ground connection line through the outer lead again, thereby shielding effectiveness and stability have been improved greatly, a low smoke and zero halogen signal cable of this scheme, as main cable or reserve cable, it adopts low smoke and zero halogen's oversheath structure, and compact structure, it is convenient to arrange and lay, have fabulous shielding effectiveness, have fine popularization meaning.
Claims (10)
1. The utility model provides a low smoke and zero halogen signal cable which characterized in that: including the fire-retardant oversheath of no steamed low cigarette, the oversheath is inside to be arranged the coating, and the inside of coating is equipped with first shielding layer, first shielding layer is metal network structure, and first shielding layer interval arrangement has the outer lead, the outer lead is the wire braided structure to be flat, and its outer end outwards extends coating and oversheath, and is equipped with the connection piece in outer end department, the outer lead department corresponds to be arranged the heat-collecting cover, the heat-collecting cover is sealed the outer wall department at the outer sheath with the exposed part of outer lead, laminating, the inside of coating is equipped with the parting bead, the parting bead separates the inner chamber into a plurality of neutral gear, the neutral gear department has arranged the sinle silk, the sinle silk outer wall has arranged the second shielding layer, interval arrangement has the connecting wire between second shielding layer and the first shielding layer.
2. A low smoke zero halogen signal cable according to claim 1, wherein: the outer sheath is provided with a reinforcing ring at the corresponding position of the outer lead.
3. A low smoke zero halogen signal cable according to claim 1, wherein: the neutral gear is four, and the arranged wire cores are respectively an electric power transmission unit, a digital transmission unit, a video transmission unit and an electric control unit.
4. A low smoke zero halogen signal cable according to claim 1, wherein: the outer lead is a copper wire braided structure.
5. A low smoke zero halogen signal cable according to claim 1, wherein: the parting bead is made of insulating rubber, and the section of the parting bead is of an X-shaped structure.
6. A low smoke zero halogen signal cable according to claim 5, wherein: and the inner wall of the cladding layer and the side surface of the parting bead end are in a fusion-bonding fixing structure.
7. A low smoke zero halogen signal cable according to claim 1, wherein: an insulating inner sheath is extruded and arranged at the center of the parting bead.
8. A low smoke zero halogen signal cable according to claim 1, wherein: the adjacent outer leads are spaced apart by a distance of 15 to 25 meters.
9. A low smoke zero halogen signal cable according to claim 1, wherein: the connecting wire is a flat braided wire.
10. A low smoke zero halogen signal cable according to claim 9, wherein: the connecting wires are in an arc-shaped arrangement structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320062421.1U CN220085712U (en) | 2023-01-10 | 2023-01-10 | Low smoke zero halogen signal cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320062421.1U CN220085712U (en) | 2023-01-10 | 2023-01-10 | Low smoke zero halogen signal cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220085712U true CN220085712U (en) | 2023-11-24 |
Family
ID=88816426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320062421.1U Active CN220085712U (en) | 2023-01-10 | 2023-01-10 | Low smoke zero halogen signal cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220085712U (en) |
-
2023
- 2023-01-10 CN CN202320062421.1U patent/CN220085712U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |