Low-noise high-strength variable-frequency cable

A frequency conversion cable, high-strength technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of poor strength of frequency conversion cables, affecting service life, etc., achieve excellent pressure resistance, energy saving, and improve tension and compression performance.

Inactive Publication Date: 2019-06-18
重庆三峡电线电缆科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing ordinary cables cannot meet their needs
At the same time, the strength of most ship frequency conversion cables is poor, which affects the service life

Method used

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  • Low-noise high-strength variable-frequency cable

Examples

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Effect test

Embodiment Construction

[0011] Hereinafter, the present invention will be further described with reference to the drawings and embodiments.

[0012] Such as figure 1 As shown, a low-noise high-strength variable frequency cable includes three sets of power cores. The enclosed space formed by the inner sides of the three sets of power cores is filled with semi-conductive filler cores. Three grounding wires 3 are laid together to form a cable core, the cable core is covered with a copper foil tape 4, the copper foil tape is twisted with a tinned copper wire drain, and the copper foil tape is provided with a braided shielding layer 5, A composite sheath 6 is arranged outside the braided shielding layer, and two high-strength steel wires parallel to each other and arranged along the longitudinal direction of the cable are arranged at the center of the wall thickness of the composite sheath. Wherein, the braided shielding layer is braided by annealed copper wires or tinned copper wires with a diameter of 0.2...

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Abstract

The invention discloses a low-noise high-strength variable-frequency cable. The cable comprises three groups of power line cores, wherein a closed space formed at the inner sides of the three groups of power line cores is filled with a semiconductive filling core, three grounding wires are uniformly distributed in a gap outside the three groups of power line cores and jointly form a cable core, the cable core is covered with a copper foil band, a tinned copper wire drainage wire is stranded on the copper foil band, a woven shielding layer is arranged outside the copper foil band, a composite sheath is arranged outside the woven shielding layer, and the central position of the thick wall of the composite sheath is provided with two parallel high-strength steel wires arranged along the longitudinal direction of the cable. Compared with the prior art, the adopted copper band plus copper wire woven structure guarantees good electromagnetic shielding performance of the cable; the selected 3+3E structure effectively suppresses odd harmonics in higher harmonics, and the anti-interference performance of the cable is achieved; and the two parallel high-strength steel wires are arranged at the center of the thick wall of the composite sheath to form a tensile component, so that the requirement for electromagnetic compatibility in the equipment set running process is met, and the strengthof the cable is improved.

Description

Technical field [0001] The invention belongs to the technical field of cables, and specifically relates to a low-noise high-strength variable frequency cable. Background technique [0002] At present, more and more equipment such as frequency conversion devices are used on ships and platforms in pursuit of energy saving, reducing equipment wear, and extending equipment life. The use of frequency conversion equipment has an increasing demand for supporting special cables, and the technical requirements are also getting higher and higher. Due to its special use environment and performance requirements, variable frequency cables must consider the influence of the outside world on the variable frequency cable and the influence of the variable frequency cable on the outside world. At the same time, the insulation withstand voltage, laying space, bending radius and so on of the variable frequency cable must also be considered. The existing ordinary cables cannot meet their needs. At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/02H01B7/17H01B7/18H01B7/22H01B7/282H01B7/29
Inventor 何耀威
Owner 重庆三峡电线电缆科技股份有限公司
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