Direct-current traction anti-twist power cable up to 1500V for rail transit
A technology for DC traction and power cables, which is applied to power cables with shielding layers/conductive layers, insulated cables, cables, etc., and can solve problems such as cable twisting
Inactive Publication Date: 2016-03-30
WUXI YUDE CABLE TECH CO LTD
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- Summary
- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
According to the requirements, different material layers are designed, but the cable will be stressed after laying, and the cable may rotate over time. When the rotation is excessive, the cable may be broken.
Method used
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Embodiment 1
[0010] like figure 1 As shown, a rail transit 1500V and below DC traction anti-twist power cable disclosed by the present invention includes a copper conductor 1, and the copper conductor 1 is coated with a shielding layer 2, an insulating layer 3 and a protective sheath 4 in sequence, and the protective sheath 4 is filled with a group of metal wires 5; the insulating layer 3 is a polyethylene or polypropylene insulating layer, the number of the metal wires 5 is not more than 6, and the distance between two adjacent metal wires 5 is less than 0.5 cm.
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The invention discloses a direct-current traction anti-twist power cable up to 1500V for rail transit. The direct-current traction anti-twist power cable comprises a copper conductor, wherein a shielding layer, an insulating layer and a protective sheath sequentially coat the outside of the copper conductor; and the protective sheath is filled with a group of metal wires. Compared with the prior art, through a design of adding the metal wires, the cable is always in a stable state under the action of gravity, can generate a certain deflection when a vehicle passes through a rail, but still returns to an original state under the action of the gravity after a passenger car passes, so that the condition that the cable is not twisted off due to long-term stress is ensured.
Description
technical field [0001] The invention belongs to the field of cables, and in particular relates to a rail transit 1500V and below DC traction anti-twist power cable. Background technique [0002] The technical requirements of the existing rail transit 1500V and below DC traction power cables are implemented in GB / T28429-2012: Rail transit 1500V and below DC traction power cables and accessories are used for power transmission of rail transit DC traction systems, and their structure is from center to The outer layer is: cable copper conductor, extruded cross-linked polyethylene or ethylene propylene rubber or hard ethylene propylene rubber insulation layer. When necessary, there can be water blocking layer; when necessary, there can be waterproof layer; when necessary, there can be fire barrier layer; when necessary, there can be armor layer; coat. According to the requirements, different material layers are designed, but the cable will be stressed after laying, and the cabl...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01B9/02H01B7/00H01B7/17H01B7/18
Inventor 徐福荣王岩
Owner WUXI YUDE CABLE TECH CO LTD
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