Low-noise and 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: 2014-12-31
申晓华
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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 and high-strength variable frequency cable

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0014] Such as figure 1 As shown, a low-noise, high-strength frequency conversion cable includes three sets of power cores, the enclosed space formed inside the three sets of power cores is filled with semi-conductive filler cores, and the gaps outside the three sets of power cores are filled with Three grounding wires 3 are arranged to form a cable core, and the cable core is covered with a copper foil strip 4, and the copper foil strip is stranded with a tinned copper wire drain wire, and the copper foil strip 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 are arranged parallel to each other and arranged along the longitudinal direction of the cable at the center of the wall thickness of the composite sheath. Wherein, the braided s...

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Abstract

The invention discloses a low-noise and high-strength variable frequency cable which comprises three groups of power wire cores, wherein semiconductive filling cores are filled in closed spaces formed by the inner sides of the three groups of power wire cores; three earth wires are uniformly distributed in gaps on the outer sides of the three groups of power wire cores to form a cable core; a copper foil tape is wrapped outside the cable core, and strands a tinned copper drainage wire; a braided shielding layer is arranged outside the copper foil tape; a composite sheath is arranged outside the braided shielding layer; and two parallel high-strength steel wires arranged in a longitudinal direction of the cable are arranged in the center of wall thickness of the composite sheath. Compared with the prior art, a copper tape and copper wire braided structure adopted by the cable ensures a good electromagnetic shielding property of the cable; a selected 3+3E structure effectively restrains odd harmonic in higher harmonic and exerts an anti-interference property of the cable; and the two parallel high-strength steel wires are arranged in the center of the wall thickness of the composite sheath to form a tensile member, so that electromagnetic compatibility of an equipment group in an operation process is met, and the strength of the cable is improved.

Description

technical field [0001] The invention belongs to the technical field of cables, and in particular relates to a low-noise and high-strength frequency conversion cable. Background technique [0002] At present, more and more equipment such as frequency conversion devices are used on ships and platforms to pursue energy saving, reduce equipment wear and prolong equipment life. The use of frequency conversion equipment requires more and more special cables for matching, and the technical requirements are also getting higher and higher. Due to the special use environment and performance requirements of the frequency conversion cable, the influence of the outside world on the frequency conversion cable and the influence of the frequency conversion cable on the outside world must be considered. At the same time, the insulation withstand voltage, laying space, bending radius, etc. of the frequency conversion cable must also be considered. Existing ordinary cables cannot meet their n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/00H01B7/02H01B7/17H01B7/29H01B7/22
Inventor 申晓华
Owner 申晓华
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