Train meter axis digital synthetic cable
A digital synthesis and shaft counting technology, which is applied in the direction of insulated cables, cables with twisted pairs/quadruple twisted cables, cables, etc., can solve the problems of small application range, inability to adapt to digital signal transmission requirements, insulation voltage, capacitance, etc. Index, insulation resistance and other electrical performance indicators are not ideal, to achieve the effect of reducing capacitance index, improving electrical performance, and improving insulation voltage
Inactive Publication Date: 2008-11-12
JIANGSU HENGTONG WIRE & CABLE TECH
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[0002] The existing train axle counting integrated cable used in railway signal system, its transmission unit is composed of low-frequency quadruple and signal quadruple, and the insulation layer of the conductor in each quadruple is ordinary polyethylene solid core insulation, resulting in this The insulation voltage, capacitance index, insulation resistance and other electrical performance indicators of this kind of cable are not ideal, the application range is small, and it cannot meet the transmission requirements of existing digital signals
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[0008] refer to figure 1 , the conductors 10 in the signal four-wire conductor group 2 and the low-frequency four-wire conductor group 3 of the present invention are coated with a low-density polyethylene inner skin solid insulation layer 9 with a thickness of 0.02-0.06 mm and a foaming degree of 55-60% High-density polyethylene foam insulation layer 8 in the middle, high-density polyethylene skin solid core insulation layer 7 with a thickness of 0.10-0.15 mm, the heating temperature of the insulation material during the extrusion process of each insulation layer is controlled at 220-240 ° C; After the single wire 1 with insulation layer of the four-wire conductor group is made, four single wires 1 are respectively covered with polyester tape to form the signal four-wire conductor group 2 and the low-frequency four-wire conductor group 3, and the two signal four-wire conductor groups 2 and two low-frequency four-wire conductor groups 3 are coated with polyester tape to make th...
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A train axle-counting digital composite cable comprises a low-frequency four-line conductor group and a signal four-line conductor group arranged in a cable core. An insulating layer of every conductor in the four-line conductor group is composed of an inner solid core insulating layer, a middle foaming insulating layer and an outer solid core insulating layer. Compared with the cable only adopting the solid core insulating layer in prior art, the composite cable greatly enhances electrical performance, saves insulating materials and reduces production cost.
Description
technical field [0001] The invention relates to a signal transmission cable, in particular to a train axle counting digital integrated cable. Background technique [0002] The existing train axle counting integrated cable used in railway signal system, its transmission unit is composed of low-frequency quadruple and signal quadruple, and the insulation layer of the conductor in each quadruple is ordinary polyethylene solid core insulation, resulting in this The insulation voltage, capacitance index, insulation resistance and other electrical performance indicators of this kind of cable are not ideal, the application range is small, and it cannot meet the transmission requirements of existing digital signals. Contents of the invention [0003] The purpose of the present invention is to provide a digital comprehensive cable for train axle counting, which has good electrical performance indicators such as improved insulation voltage and insulation resistance, and reduced capa...
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IPC IPC(8): H01B11/02H01B7/02
Inventor 王国权金春敏钱江华孙国跃徐美芳沈惠丽孙建峰宋晓贤王惠兵
Owner JIANGSU HENGTONG WIRE & CABLE TECH