CN212461225U - Cross-linked polyethylene insulated rail transit low-smoke halogen-free flame-retardant subway cable - Google Patents
Cross-linked polyethylene insulated rail transit low-smoke halogen-free flame-retardant subway cable Download PDFInfo
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- CN212461225U CN212461225U CN202021664653.7U CN202021664653U CN212461225U CN 212461225 U CN212461225 U CN 212461225U CN 202021664653 U CN202021664653 U CN 202021664653U CN 212461225 U CN212461225 U CN 212461225U
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Abstract
The utility model provides a low smoke and zero halogen flame retardant subway cable of cross-linked polyethylene insulation track traffic, including the conductor, the outside of conductor is provided with the isolation layer, the outside of isolation layer is provided with the insulating layer, the outside of insulating layer is provided with the extrusion layer, the outside of extrusion layer is provided with the shielding layer, the outside of shielding layer is provided with fire-retardant layer, the outside of fire-retardant layer is provided with the fire-resistant oxygen barrier of pottery, the outside of the fire-resistant oxygen barrier of pottery is provided with the restrictive coating; an extrusion resistant part and a matched extrusion resistant part are arranged in the extrusion layer, an arc opening is formed in one surface, facing the matched extrusion resistant part, of the extrusion resistant part, an elastic groove is formed in one surface, facing the extrusion resistant part, of the matched extrusion resistant part, and the arc opening is movably abutted against the elastic groove; the fireproof expansion piece is characterized in that a wavy fixing piece and a plurality of fireproof expansion strips are arranged in the flame-retardant layer, and the fireproof expansion strips are distributed in notches of the wavy fixing piece.
Description
Technical Field
The utility model relates to the technical field of cables, indicate a fire-retardant subway cable of insulating track traffic low smoke and zero halogen of crosslinked polyethylene especially.
Background
With the rapid development of economy in China, the urban modernization process is obviously accelerated, and the development and construction of rapid rail transit system networks are already hot such as tidal surge. The rail transit cable is a novel special cable product which emerges along with the development of urban traffic.
Because rail transit lines such as subways and light rails are usually located in underground public places with dense personnel, once a fire disaster occurs, the underground closed environment brings great difficulty for personnel to escape and fire fighting, and the factors determine that the rail transit cable has good low-smoke halogen-free, flame-retardant and non-toxic properties.
Therefore, the utility model provides a fire-retardant subway cable of low smoke and zero halogen of insulating track traffic of crosslinked polyethylene to solve the problem that above-mentioned exists.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art's shortcoming, provide a low smoke and zero halogen flame retardant subway cable of cross-linked polyethylene insulation track traffic.
In order to solve the technical problem, the utility model provides a following technical scheme: the low-smoke halogen-free flame-retardant subway cable for the cross-linked polyethylene insulated rail transit comprises a conductor, wherein an isolation layer is arranged outside the conductor, an insulation layer is arranged outside the isolation layer, an extrusion layer is arranged outside the insulation layer, a shielding layer is arranged outside the extrusion layer, a flame-retardant layer is arranged outside the shielding layer, a ceramic fire-resistant oxygen-isolating layer is arranged outside the flame-retardant layer, and a sheath layer is arranged outside the ceramic fire-resistant oxygen-isolating layer;
an extrusion resistant part and a matched extrusion resistant part are arranged in the extrusion layer, an arc opening is formed in one surface, facing the matched extrusion resistant part, of the extrusion resistant part, an elastic groove is formed in one surface, facing the extrusion resistant part, of the matched extrusion resistant part, and the arc opening is movably abutted against the elastic groove;
the fireproof expansion piece is characterized in that a wavy fixing piece and a plurality of fireproof expansion strips are arranged in the flame-retardant layer, and the fireproof expansion strips are distributed in notches of the wavy fixing piece.
As an optimized technical proposal of the utility model, the conductor is a tinned copper conductor.
As an optimized technical proposal of the utility model, the isolating layer is made of alkali-free glass fiber belt material.
As a preferred technical solution of the present invention, the insulating layer is made of a cross-linked polyethylene material.
As an optimal technical scheme of the utility model, the shielding layer is the metallic shield layer, and this metallic shield layer is worked out for the tinned copper wire and forms.
As an optimized technical scheme of the utility model, the restrictive coating is made for low smoke and zero halogen flame retardant polyolefin material, has low cigarette, no halogen and certain fire behaviour.
As an optimal technical scheme, resistant extruded article and the resistant extruded article of cooperation all adopt thermoplastic elastomer to make, can unload some stress through the elastic deformation uninstallation of self, have improved the resistant extrusion performance of cable.
As an optimal technical scheme, wavy mounting nylon material can support fire-retardant layer, increases the resistant extrusion force of this cable to improve the stability of this cable, ensure the normal use in this cable later stage.
The utility model discloses the beneficial effect who reaches is:
1. the utility model provides a pair of fire-retardant subway cable of cross-linked polyethylene insulation track traffic low smoke and zero halogen, the pottery fire-resistant oxygen layer that separates that becomes restrictive coating and set up is made through low smoke and zero halogen fire-retardant polyolefin material, fire-retardant layer, the isolation layer, can effectively improve the flame retardant property of cable, pottery fire-resistant oxygen layer that separates is under the flame condition, can ceramic solidification form ceramic form casing, thereby block flame burning effectively, can further strengthen the fire resistance of cable, the fire prevention inflation strip of filling in the fire-retardant layer, take place the inflation and can plug up the breach under meeting the fire state, can prevent to burn the cable core, improve the safety in utilization.
2. The utility model provides a pair of fire-retardant subway cable of low smoke and zero halogen of cross-linked polyethylene insulation track traffic, through the extrusion layer that sets up and the resistant extruded article of resistant extruded article and cooperation that set up in the extrusion layer, receiving external extrusion back, can paste and lean on together, uninstallation through the elastic deformation of self falls some stress, has improved the resistant extrusion performance of cable.
The present invention will be described in more detail with reference to the accompanying drawings and examples.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the extrusion layer of the present invention;
FIG. 3 is a schematic structural view of the flame retardant layer of the present invention;
reference numbers in the figures: 1. a conductor; 2. an isolation layer; 3. an insulating layer; 4. extruding the layer; 41. an extrusion-resistant member; 42. fitting an extrusion resistant member; 43. an arc opening; 44. an elastic groove; 5. a shielding layer; 6. a flame retardant layer; 61. a wave-shaped fixing member; 62. a fire-resistant intumescent strip; 7. a sheath layer.
Detailed Description
The terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like in the specification indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b): as shown in fig. 1-3, the utility model provides a cross-linked polyethylene insulation track traffic low smoke and zero halogen flame retardant subway cable, including conductor 1, the outside of conductor 1 is provided with isolation layer 2, the outside of isolation layer 2 is provided with insulating layer 3, the outside of insulating layer 3 is provided with extrusion layer 4, the outside of extrusion layer 4 is provided with shielding layer 5, the outside of shielding layer 5 is provided with fire-retardant layer 6, the outside of fire-retardant layer 6 is provided with pottery fire-resistant oxygen barrier layer 7, the outside of pottery fire-resistant oxygen barrier layer 7 is provided with restrictive coating 8, pottery fire-resistant oxygen barrier layer 7 can the ceramic solidification form ceramic form casing under the flame condition to block flame burning effectively, can further strengthen the fire resistance of cable;
an extrusion-resistant part 41 and a matched extrusion-resistant part 42 are arranged in the extrusion layer 4, an arc 43 is arranged on one surface of the extrusion-resistant part 41 facing the matched extrusion-resistant part 42, an elastic groove 44 is arranged on one surface of the matched extrusion-resistant part 42 facing the extrusion-resistant part 41, the arc 43 is movably abutted against the elastic groove 44, after the extrusion-resistant part 41 and the matched extrusion-resistant part 42 can be abutted together after being extruded from the outside, a part of stress is unloaded through the elastic deformation of the extrusion-resistant part 41 and the extrusion-resistant performance of the cable is improved;
be equipped with wavy mounting 61 and a plurality of fire prevention inflation strip 62 in fire-retardant layer 6, it is a plurality of fire prevention inflation strip 62 distributes in the notch of wavy mounting 61, and under the flame condition, fire prevention inflation strip 62 takes place the inflation and can plug up the breach, can prevent to burn the cable core, improves the safety in utilization.
Further, the conductor 1 is a tin-plated copper conductor.
Further, the isolation layer 2 is made of alkali-free glass fiber tape.
Further, the insulating layer 3 is made of a cross-linked polyethylene material.
Furthermore, the shielding layer 5 is a metal shielding layer which is woven by tinned copper wires.
Further, the sheath layer 8 is made of a low-smoke halogen-free flame-retardant polyolefin material.
Further, the pressure-resistant member 41 and the mating pressure-resistant member 42 are both made of a thermoplastic elastic material.
Further, wavy mounting 61 is the nylon material, and the wavy mounting 61 of nylon material can support fire-retardant layer 6, increases the resistant extrusion force of this cable to improve the stability of this cable, ensure the normal use in this cable later stage.
The above embodiments are merely to describe the preferred embodiments of the present invention, and are not to limit the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.
Claims (8)
1. The low-smoke halogen-free flame-retardant subway cable for the cross-linked polyethylene insulated rail transit is characterized by comprising a conductor (1), wherein an isolation layer (2) is arranged outside the conductor (1), an insulation layer (3) is arranged outside the isolation layer (2), an extrusion layer (4) is arranged outside the insulation layer (3), a shielding layer (5) is arranged outside the extrusion layer (4), a flame-retardant layer (6) is arranged outside the shielding layer (5), a ceramic fire-resistant oxygen-insulating layer (7) is arranged outside the flame-retardant layer (6), and a sheath layer (8) is arranged outside the ceramic fire-resistant oxygen-insulating layer (7);
an extrusion-resistant part (41) and a matched extrusion-resistant part (42) are arranged in the extrusion layer (4), an arc opening (43) is formed in one surface, facing the matched extrusion-resistant part (42), of the extrusion-resistant part (41), an elastic groove (44) is formed in one surface, facing the extrusion-resistant part (41), of the matched extrusion-resistant part (42), and the arc opening (43) is movably abutted to the elastic groove (44);
the fireproof door is characterized in that a wavy fixing piece (61) and a plurality of fireproof expansion strips (62) are arranged in the flame-retardant layer (6), and the plurality of fireproof expansion strips (62) are distributed in a notch of the wavy fixing piece (61).
2. The cross-linked polyethylene insulated rail transit low-smoke halogen-free flame-retardant subway cable according to claim 1, wherein said conductor (1) is a tin-plated copper conductor.
3. The cross-linked polyethylene insulated rail transit low-smoke halogen-free flame-retardant subway cable according to claim 1, wherein said isolation layer (2) is made of alkali-free glass fiber tape material.
4. The cross-linked polyethylene insulated rail transit low smoke zero halogen flame retardant subway cable according to claim 1, characterized in that said insulation layer (3) is made of cross-linked polyethylene material.
5. The low-smoke halogen-free flame-retardant subway cable for the cross-linked polyethylene insulated rail transit according to claim 1, wherein said shielding layer (5) is a metal shielding layer woven by tinned copper wires.
6. The cross-linked polyethylene insulated rail transit low-smoke halogen-free flame-retardant subway cable according to claim 1, wherein said sheath layer (8) is made of low-smoke halogen-free flame-retardant polyolefin material.
7. The cross-linked polyethylene insulated rail transit low-smoke halogen-free flame-retardant subway cable according to claim 1, wherein said extrusion-resistant member (41) and said extrusion-resistant member (42) are both made of thermoplastic elastic material.
8. The cross-linked polyethylene insulated rail transit low-smoke halogen-free flame-retardant subway cable according to claim 1, wherein said wavy fixing member (61) is made of nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021664653.7U CN212461225U (en) | 2020-08-11 | 2020-08-11 | Cross-linked polyethylene insulated rail transit low-smoke halogen-free flame-retardant subway cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021664653.7U CN212461225U (en) | 2020-08-11 | 2020-08-11 | Cross-linked polyethylene insulated rail transit low-smoke halogen-free flame-retardant subway cable |
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| CN212461225U true CN212461225U (en) | 2021-02-02 |
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| CN202021664653.7U Active CN212461225U (en) | 2020-08-11 | 2020-08-11 | Cross-linked polyethylene insulated rail transit low-smoke halogen-free flame-retardant subway cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115440422A (en) * | 2022-09-16 | 2022-12-06 | 江苏东强股份有限公司 | Intelligent sensing photoelectric comprehensive signal cable for rail transit |
-
2020
- 2020-08-11 CN CN202021664653.7U patent/CN212461225U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115440422A (en) * | 2022-09-16 | 2022-12-06 | 江苏东强股份有限公司 | Intelligent sensing photoelectric comprehensive signal cable for rail transit |
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