High-low-temperature resistant double-shielding cable
A high and low temperature resistant, double shielding technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of low shielding performance, poor high and low temperature resistance, cracking, etc., to achieve good conductivity, long service life, high resistance The effect of high and low temperature
Inactive Publication Date: 2014-07-09
新宇电缆集团股份有限公司
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Problems solved by technology
However, the current cables generally use single-layer shielding, and the shielding performance is not high, or the sheath is made of PVC material, which is not resistant to high and low temperatures. Generally, it is prone to cracking at -25°C
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[0012] Such as figure 1 As shown, a high and low temperature resistant double-shielded cable, which includes a main core 1 and a tape layer 2 coated on the outside of the main core 1 in turn, an inner shield 4, a nitrile insulating layer 5, an outer shield 7 and a protective sheath 9. The main wire cores 1 are in six groups, which are evenly extruded inside the tape layer 2, and the center of the tape layer 2 is provided with a grounding wire core 3, and the main wire core 1 is based on the grounding wire core 3 The center is arranged radially and closely arranged in turn. The nitrile insulating layer 5 is provided with three nickel-plated copper alloy wire heating wires 6. The outer shielding layer 7 and the protective sleeve 9 are wrapped with an inner protection Layer 8.
[0013] The inner shielding layer 4 is a tinned copper wire braided mesh, and the outer shielding layer 7 is composed of an oxygen-free electrical copper wire braided mesh wrapped with aluminum foil.
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The invention discloses a high-low-temperature resistant double-shielding cable which comprises main cable cores, a wrapping tape layer, an inner shielding layer, a butyronitrile insulating layer, an outer shielding layer and a jacket, wherein the main cable cores are sequentially wrapped by the wrapping tape layer, the inner shielding layer, the butyronitrile insulating layer, the outer shielding layer and the jacket. The six main cable cores are evenly wrapped inside the wrapping tape layer in an extruded mode, a grounded cable core is arranged in the center of the wrapping tape layer, the main cable cores are sequentially and compactly arranged in a radial and externally-tangent mode with the grounded cable core as the center, three nickel-clad copper alloy wire heating wires are arranged inside the butyronitrile insulating layer, and an inner protection layer is wrapped between the outer shielding layer and the jacket. The high-low-temperature resistant double-shielding cable is good in electrical conductivity, long in service life, resistant to dragging, resistant to the high temperature and the low temperature and high in shielding performance, is widely applied to the fields such as computers, communication, power generation and metallurgy, and further has the advantages of being resistant to oxidation, waterproof, resistant to oil and the like.
Description
technical field [0001] The invention belongs to the field of electric cables, in particular to high and low temperature resistant double-shielded electric cables. Background technique [0002] At present, with the rapid development of my country's economy and the increasing level of science and technology, the amount of cables is increasing, and higher requirements are placed on the quality of cables. However, current cables generally use single-layer shielding, which has low shielding performance, or uses PVC sheaths, which are not resistant to high and low temperatures, and cracks are prone to occur at -25°C. Only by meeting the requirements can the production and use of cables be better guaranteed. Contents of the invention [0003] In order to overcome the above-mentioned defects of the prior art, the object of the present invention is to provide a high and low temperature resistant double shielded cable with good electrical conductivity, waterproof and oil resistance...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01B7/17H01B7/285H01B7/18H01B7/28H01B7/29
Inventor 何俊文何帮定何国
Owner 新宇电缆集团股份有限公司