CN212380182U - Low-halogen thin-wall insulated cable for locomotive - Google Patents
Low-halogen thin-wall insulated cable for locomotive Download PDFInfo
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- CN212380182U CN212380182U CN202021749212.7U CN202021749212U CN212380182U CN 212380182 U CN212380182 U CN 212380182U CN 202021749212 U CN202021749212 U CN 202021749212U CN 212380182 U CN212380182 U CN 212380182U
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Abstract
The utility model belongs to the technical field of the thin-walled cable technique and specifically relates to a low-halogen thin-walled insulated cable for locomotive, including the conductor, the cladding has no halogen flame retardant insulation layer on the conductor, and does not have the apparent cladding of halogen flame retardant insulation layer and have low-halogen flame retardant restrictive coating. The utility model discloses a low-halogen thin-walled insulated cable for locomotive, the thin-walled cable who makes through halogen-free flame retardant insulation layer and low-halogen flame retardant sheath layer cladding conductor, effectively improve thin-walled insulated cable's flame retardant properties, add high temperature resistant oily rubber in its halogen-free flame retardant insulation layer and low-halogen flame retardant sheath in situ, the resistant oily performance of cable has been improved, and the pliability of cable has been improved, make its cable have better low temperature resistance performance simultaneously, through low-halogen flame retardant sheath layer, when having improved the thin-walled cable light transmissivity, also guaranteed that its smoke density is less than 20%, the performance of this cable has been improved effectively.
Description
Technical Field
The utility model belongs to the technical field of the thin-walled cable technique and specifically relates to a low-halogen thin-walled insulated cable for locomotive.
Background
At present, two technical standards related to thin-wall insulated cables exist, one is an iron standard TB/T1484.1-2017 (hereinafter referred to as an iron standard version 2017), and the other is an European standard EN 50306-2: 2002. the common characteristic of the two standards is that the thin-wall insulated cable is made of low-smoke halogen-free flame-retardant material. Wherein, the cable sheath layer and the insulating layer of some manufacturers are layered, and the cable is divided into three-layer structure; the insulating layer and the sheath layer of some manufacturers are combined into a whole, the cable has only a two-layer structure, the original mechanical property of the thin-wall insulated cable with the 2017 version iron standard is higher than or equal to 30MPa, the standard is set too high, and a supplier cannot make products of the standard; the euro standard does not have a requirement for the original mechanical properties of thin-walled insulated cables, which is too low. During the wiring construction process of the locomotive, the locomotive has higher wear resistance and higher tensile and tensile strength requirements on an insulating layer and a sheath layer (if any) of the cable; whether the cable is an iron-standard thin-wall insulated cable or a European-standard thin-wall insulated cable, the cable is cracked in batches after long-term use. The cracking phenomenon of the domestic European standard thin-wall insulated cable after a period of use. The iron-labeled thin-wall insulated cable also has the cracking and aging phenomena.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of current thin-walled cable toughness poor, the intensity is low and easy chap ageing, the utility model provides a low-halogen thin-walled insulated cable for locomotive, the thin-walled cable who makes through halogen-free flame retardant insulation layer and low-halogen flame retardant restrictive coating cladding conductor.
The utility model provides a technical scheme that its technical problem adopted is: the low-halogen thin-wall insulated cable for the locomotive comprises a conductor, wherein a halogen-free flame-retardant insulating layer is coated on the conductor, and a low-halogen flame-retardant sheath layer is coated on the outer surface of the halogen-free flame-retardant insulating layer.
Furthermore, the halogen-free flame-retardant insulating layer and the low-halogen flame-retardant sheath layer are formed by double-layer extrusion molding.
Further, the halogen-free flame-retardant insulating layer is formed by melting and extrusion molding of polyethylene, an antioxidant and high-temperature-resistant and oil-resistant rubber.
Further, the low-halogen flame-retardant sheath layer is formed by melting and extruding polyethylene, an antioxidant, halogen and high-temperature-resistant and oil-resistant rubber.
Furthermore, the thickness of the halogen-free flame-retardant insulating layer is consistent with that of the low-halogen flame-retardant sheath layer.
Further, the light transmittance of the halogen-free flame-retardant insulating layer and the low-halogen flame-retardant sheath layer is more than 80%.
Further, the smoke density of the halogen-free flame-retardant insulating layer and the low-halogen flame-retardant sheath layer is less than 20%.
The beneficial effects of the utility model are that, the utility model discloses a low-halogen thin-walled insulated cable for locomotive, the thin-walled cable who makes through halogen-free flame retardant insulation layer and low-halogen flame retardant sheath layer cladding conductor, effectively improve thin-walled insulated cable's flame retardant property, add high temperature resistant oil rubber in its halogen-free flame retardant insulation layer and low-halogen flame retardant sheath in situ, the resistant oil property of cable has been improved, and the pliability of cable has been improved, make its cable have better low temperature resistance performance simultaneously, through low-halogen flame retardant sheath layer, when having improved the thin-walled cable light transmissivity, it is less than 20% also to have guaranteed its smoke density, the performance of this cable has been improved effectively.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1 is a conductor, 2 is a halogen-free flame-retardant insulating layer, and 3 is a low-halogen flame-retardant sheath layer.
Detailed Description
Fig. 1 is the structure diagram of the utility model, a low-halogen thin-walled insulated cable for locomotive, including conductor 1, the cladding has halogen-free flame retardant insulating layer 2 on the conductor 1, and halogen-free flame retardant insulating layer 2 outward appearance cladding has low-halogen flame retardant restrictive coating 3.
As shown in fig. 1, the halogen-free flame-retardant insulating layer 2 and the low-halogen flame-retardant sheath layer 3 are formed by double extrusion molding.
As shown in figure 1, the halogen-free flame-retardant insulating layer 2 is formed by melting and extrusion molding of polyethylene, an antioxidant and high-temperature-resistant and oil-resistant rubber.
As shown in figure 1, the low-halogen flame-retardant sheath 3 is formed by melting and extruding polyethylene, antioxidant, halogen and high-temperature-resistant and oil-resistant rubber.
As shown in fig. 1, the thickness of the halogen-free flame-retardant insulating layer 2 and the thickness of the low-halogen flame-retardant sheath layer 3 are consistent.
As shown in fig. 1, the light transmittance of the halogen-free flame-retardant insulating layer 2 and the low-halogen flame-retardant sheath layer 3 is greater than 80%.
As shown in fig. 1, the smoke density of the halogen-free flame-retardant insulating layer 2 and the low-halogen flame-retardant sheath layer 3 is less than 20%.
The first embodiment is as follows:
in the extrusion molding process of the halogen-free flame-retardant insulating layer 2 and the low-halogen flame-retardant sheath layer 3, the antioxidant is added, so that the high-temperature resistance of the halogen-free flame-retardant insulating layer 2 and the low-halogen flame-retardant sheath layer 3 is improved, and the high-temperature resistance of the whole cable is further improved.
The second embodiment is as follows:
in the extrusion molding process of the halogen-free flame-retardant insulating layer 2 and the low-halogen flame-retardant sheath layer 3, the nanoscale high-temperature-resistant oil-resistant rubber is added, so that the oil resistance, flexibility and tensile strength of the cable are improved, and the low-temperature resistance of the cable is improved.
When the low-halogen flame-retardant cable is used, the thin-wall cable made by wrapping the conductor 1 by the halogen-free flame-retardant insulating layer 2 and the low-halogen flame-retardant sheath layer 3 effectively improves the flame retardant property of the thin-wall insulating cable, high-temperature-resistant oil-resistant rubber is added into the halogen-free flame-retardant insulating layer and the low-halogen flame-retardant sheath layer, the oil resistance of the cable is improved, the flexibility of the cable is improved, the cable has better low-temperature resistance, the light transmittance of the thin-wall cable is improved by the low-halogen flame-retardant sheath layer, the smoke density of the thin-wall cable is guaranteed to be lower than 20%, and the performance of the.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. The low-halogen thin-wall insulated cable for the locomotive comprises a conductor (1) and is characterized in that a halogen-free flame-retardant insulating layer (2) is coated on the conductor (1), and a low-halogen flame-retardant sheath layer (3) is coated on the outer surface of the halogen-free flame-retardant insulating layer (2).
2. The thin-walled low-halogen insulated cable for locomotives according to claim 1, wherein the halogen-free flame-retardant insulating layer (2) and the low-halogen flame-retardant sheath layer (3) are formed by double extrusion and extrusion molding.
3. The low-halogen thin-wall insulated cable for the locomotive according to claim 1 or 2, wherein the halogen-free flame-retardant insulating layer (2) is formed by melt extrusion molding of polyethylene, an antioxidant and high-temperature-resistant and oil-resistant rubber.
4. A low-halogen thin-walled insulated cable for locomotives according to claim 1, wherein said low-halogen flame-retardant sheath layer (3) is melt extrusion molded from polyethylene, antioxidant, halogen and high temperature resistant oil resistant rubber.
5. The locomotive low-halogen thin-wall insulated cable according to claim 4, wherein the thickness of the halogen-free flame-retardant insulating layer (2) is consistent with that of the low-halogen flame-retardant sheath layer (3).
6. The locomotive low-halogen thin-wall insulated cable according to claim 1, wherein the light transmittance of the halogen-free flame-retardant insulating layer (2) and the low-halogen flame-retardant sheath layer (3) is greater than 80%.
7. The locomotive low-halogen thin-wall insulated cable according to claim 1 or 6, wherein the smoke density of the halogen-free flame-retardant insulating layer (2) and the low-halogen flame-retardant sheath layer (3) is less than 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021749212.7U CN212380182U (en) | 2020-08-20 | 2020-08-20 | Low-halogen thin-wall insulated cable for locomotive |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021749212.7U CN212380182U (en) | 2020-08-20 | 2020-08-20 | Low-halogen thin-wall insulated cable for locomotive |
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| Publication Number | Publication Date |
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| CN212380182U true CN212380182U (en) | 2021-01-19 |
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| CN202021749212.7U Active CN212380182U (en) | 2020-08-20 | 2020-08-20 | Low-halogen thin-wall insulated cable for locomotive |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111916257A (en) * | 2020-08-20 | 2020-11-10 | 中车戚墅堰机车有限公司 | Low-halogen thin-wall insulated cable for locomotive |
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2020
- 2020-08-20 CN CN202021749212.7U patent/CN212380182U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111916257A (en) * | 2020-08-20 | 2020-11-10 | 中车戚墅堰机车有限公司 | Low-halogen thin-wall insulated cable for locomotive |
| WO2022037264A1 (en) * | 2020-08-20 | 2022-02-24 | 中车戚墅堰机车有限公司 | Low-halogen thin wall insulated electrical cable for locomotive |
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