CN212809877U - Rat-proof and termite-proof flame-retardant cable for subway - Google Patents
Rat-proof and termite-proof flame-retardant cable for subway Download PDFInfo
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- CN212809877U CN212809877U CN202020093234.6U CN202020093234U CN212809877U CN 212809877 U CN212809877 U CN 212809877U CN 202020093234 U CN202020093234 U CN 202020093234U CN 212809877 U CN212809877 U CN 212809877U
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Abstract
The utility model provides a subway is with preventing mouse ant flame retarded cable, it includes the cable conductor, flame retarded cable still includes insulating layer, filling layer, first high fire-retardant area around the covering, separate oxygen layer, armor, second high fire-retardant area around covering, fire-retardant layer and prevent termite layer, and wherein the insulating layer cladding is in on the surface of cable conductor, the filling layer is filled between first high fire-retardant area around the covering and cable insulation conductor, separate oxygen layer cladding at the surface of first high fire-retardant area around the covering, the armor cladding is outside at oxygen layer, second high fire-retardant is outside the armor around the covering, fire-retardant layer cladding is at second high fire-retardant around the covering surface, prevent that termite layer cladding is at fire-retardant layer's surface; according to the scheme, the outer surface of the cable conductor is respectively provided with the armor layer, the flame-retardant layer and the termite-proof layer, so that damage of rats and ants to the cable can be prevented when the cable is used, and the cable also has a flame-retardant function.
Description
Technical Field
The utility model relates to a wire and cable technical field, concretely relates to subway is with protection against rodents ant flame retarded cable.
Background
With the continuous perfection of metro nets in China, because the metro nets are laid in tunnels or underground, the design of the metro nets mostly requires the requirement of rat and ant prevention, the tunnels are dark, moist and closed in one side, the peripheries of the tunnels are basically in an unoccupied area, and the tunnels are places where rats and ants are easy to gather, so the requirement of rat and ant prevention is considered when cables for subways and railways are designed, and the conventional rat and ant prevention is solved by adopting a chemical method, namely adding a rat-proof agent and an ant-proof agent into a low-smoke halogen-free sheathing material. The product processed by the method has obvious rat and ant prevention effect in the initial stage of use, but cannot achieve the rat and ant prevention effect after years along with plastic aging and gradual drug release, so that the structure and the material of the product are urgently required to be changed, and the rat and ant prevention effect is realized. In addition, a unilaterally enclosed environment also places further demands on flame retardant properties. Particularly, people are dense, but a fire disaster happens, so that serious consequences can be caused. Therefore, the flame retardancy of the product is also considered.
Disclosure of Invention
To the defect that exists among the prior art, the utility model aims to provide a subway is with preventing mouse ant flame retarded cable, its destruction that can effectually prevent mouse ant to the cable of this cable, it possesses certain flame retardant efficiency again simultaneously.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a fire-retardant cable of protection against rodents ant for subway, fire-retardant cable includes the cable conductor, fire-retardant cable still includes insulating layer, filling layer, high fire-retardant area around covering, oxygen-proof layer, armor, high fire-retardant area around covering, fire-retardant layer and termite-proof layer, wherein the insulating layer cladding is in on the surface of cable conductor, the filling layer is filled high fire-retardant area around between covering and the cable conductor, it is in to separate the oxygen-proof layer cladding high fire-retardant area around the surface of covering, the armor cladding is in the outside of oxygen-proof layer, high fire-retardant around the covering is in outside the armor, fire-retardant layer cladding is in high fire-retardant around the covering surface, termite-proof layer cladding is in the surface of fire-retardant layer.
Furthermore, the insulating layer is made of cross-linked polyethylene.
Furthermore, the filling layer is formed by high-flame-retardant netted filling ropes.
Further, the flame-retardant cable further comprises a high flame-retardant wrapping layer which is made of a halogen-free high-flame-retardant belt material.
Furthermore, the armor layer is formed by a brass strip or double-layer galvanized steel strip armor structure.
The scheme has the beneficial technical effects that: according to the scheme, the rat and ant prevention flame-retardant cable for the subway is provided with the armor layer, the flame-retardant layer and the termite prevention layer on the outer surface of the cable conductor respectively, so that the damage of rats and ants to the cable can be prevented when the cable is used, and the flame-retardant cable also has a flame-retardant function.
Drawings
Fig. 1 is the cross-sectional structure schematic diagram of the middle flame-retardant cable of the present invention.
In the figure:
the cable comprises a cable conductor 1, an insulating layer 2, a filling layer 3, a first high-flame-retardant tape wrapping layer 4, an oxygen insulation layer 5, an armor layer 6, a second high-flame-retardant tape wrapping layer 7, a low-smoke halogen-free flame-retardant layer 8 and a termite-proof layer 9.
Detailed Description
The present invention will be described in further detail with reference to the drawings and the following detailed description.
Referring to fig. 1, the rat and termite resistant flame retardant cable for the subway in the embodiment includes a cable conductor 1, and further includes a first high flame retardant tape wrapping layer 4, an insulating layer 2, a filling layer 3 and a termite resistant layer 9, wherein the insulating layer 2 is wrapped on the outer surface of the cable conductor 1, the cable conductor 1 is arranged in the inner cavity of the first high flame retardant tape wrapping layer 4, the filling layer 3 is filled between the inner cavity of the first high flame retardant tape wrapping layer 4 and the cable conductor 1, and the termite resistant layer 9 is wrapped on the outer surface of the flame retardant layer 8. In terms of materials, the termite-proof layer 9 is made of a high-hardness special material to form the outer protective layer which can not be bitten by termites, in the embodiment, the termite-proof layer is made of high-hardness polyethylene, and glass fiber, mica powder, carbon black and other materials are added into the high-hardness polyethylene for mixed processing, so that the termite-proof layer has the characteristics of high hardness, termite acid corrosion resistance, environmental protection and the like, and has good mechanical and physical properties, excellent environmental stress cracking resistance and extrusion processing performance.
The flame-retardant cable in the embodiment further comprises an armor layer 6, a second high-flame-retardant tape winding cladding 7, a low-smoke halogen-free flame-retardant layer 8 and an oxygen-insulating layer 5, wherein the oxygen-insulating layer 5, the armor layer 6, the second high-flame-retardant tape winding cladding 7 and the low-smoke halogen-free flame-retardant layer 8 are sequentially arranged between the first high-flame-retardant tape winding cladding 4 and the termite-proof layer 9 from inside to outside.
The cable conductor 1 in the embodiment is made of an oxygen-free copper material, the insulating layer 2 is insulated by crosslinked polyethylene, and the thickness of the insulating layer meets the design standard of a corresponding cable; the filling layer 3 adopts a flame-retardant netted filling rope structure compatible with the insulating material; the armor layer 6 is formed by a brass strip or double-layer galvanized steel strip armor structure; the low-smoke halogen-free flame-retardant layer 8 adopts a low-smoke halogen-free sheathing material structure with low heat release and good crusting property; the termite-proof layer 9 is made by extrusion molding of a mixed material taking high-hardness polyethylene as a matrix.
In addition, the low-smoke halogen-free flame retardant layer 8 and the termite-proof layer 9 in the embodiment can be processed by the following two methods in a processing and forming manner:
(1) single layer extrusion process
Because the extrusion temperature difference of fire-retardant layer and termite-proof layer when extruding is great, so extrude fire-retardant layer earlier, the mode of termite-proof layer is extruded to back, though this method is easy to operate, in order to prevent that the combination can appear not inseparable in the manufacture process, there is the layering phenomenon, has the risk of fracture in the use moreover, and the effect that leads to protection against rodents ant is not good, this type of problem can be solved through increasing protection against rodents ant layer thickness, extrudes thickness at 2.0mm through verifying, respond well.
(2) Double-layer co-extrusion process
The inner and outer protective layers are tightly combined in a double-layer co-extrusion mode, and the rat and ant prevention effect is excellent. The setting of the extrusion temperature is critical, the requirement of the extrusion temperature of the rat and ant prevention layer is met, the requirement of the temperature of the flame-retardant layer is also met, the material performance of the flame-retardant layer is influenced when the temperature is too high, the rat and ant prevention layer is not easy to extrude when the temperature is too low, so that the extrusion temperature range of the flame-retardant layer is between 140 and 190, the extrusion temperature range of the rat and ant prevention layer is between 170 and 210, the thickness of the rat and ant prevention layer is about 1.2mm in order to ensure the flame-retardant effect after extrusion, and the effect is optimal.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalent technologies, the present invention is also intended to include such modifications and variations.
Claims (5)
1. The utility model provides a protection against rodents ant flame retarded cable for subway, flame retarded cable includes the cable conductor which characterized in that: the flame-retardant cable further comprises an insulating layer, a filling layer, a first high-flame-retardant belt wrapping layer, an oxygen-isolating layer, an armor layer, a second high-flame-retardant belt wrapping layer, a flame-retardant layer and a termite-proof layer, wherein the insulating layer is coated on the outer surface of the cable conductor, the filling layer is filled between the first high-flame-retardant belt wrapping layer and the cable insulating conductor, the oxygen-isolating layer is wrapped on the outer surface of the first high-flame-retardant belt wrapping layer, the armor layer is wrapped on the outer surface of the oxygen-isolating layer, the second high-flame-retardant belt wrapping layer is arranged outside the armor layer, the flame-retardant layer is wrapped on the outer surface of the second high-flame-retardant belt wrapping layer, and the termite-proof layer is wrapped on the outer surface of the flame-retardant.
2. The rat and ant prevention flame-retardant cable for the subway according to claim 1, wherein: the insulating layer is made of cross-linked polyethylene.
3. The rat and ant prevention flame-retardant cable for the subway according to claim 1, wherein: the filling layer is composed of fire-retardant netted filling ropes.
4. The rat and ant prevention flame-retardant cable for the subway according to claim 1, wherein: the high-flame-retardant tape wrapping layer is formed by halogen-free high-flame-retardant tapes.
5. The rat and ant prevention flame-retardant cable for the subway according to claim 1, wherein: the armor layer is formed by a brass strip or double-layer galvanized steel strip armor structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020093234.6U CN212809877U (en) | 2020-01-16 | 2020-01-16 | Rat-proof and termite-proof flame-retardant cable for subway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020093234.6U CN212809877U (en) | 2020-01-16 | 2020-01-16 | Rat-proof and termite-proof flame-retardant cable for subway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212809877U true CN212809877U (en) | 2021-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020093234.6U Active CN212809877U (en) | 2020-01-16 | 2020-01-16 | Rat-proof and termite-proof flame-retardant cable for subway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212809877U (en) |
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2020
- 2020-01-16 CN CN202020093234.6U patent/CN212809877U/en active Active
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