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Diameter-expanding cable

A cable and conductor technology, applied in the field of expanded diameter cables, can solve the problems of large resistance, heavy cable weight, and small external contact surface of conductors, etc., and achieve the effects of low temperature rise, good heat dissipation conditions, and large external contact surface

Active Publication Date: 2012-02-15
HEFEI POWER SUPPLY COMPANY OF STATE GRID ANHUI ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is to avoid the deficiencies in the above-mentioned prior art, and provides a diameter-expanding cable to solve the problems of heavy cable weight, small conductor external surface, large resistance, etc. Increase transmission capacity

Method used

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Embodiment Construction

[0030] see Figure 1 ~ Figure 2 , Expansion cable, including conductor 2, insulation layer 3, inner sheath 4, shielding layer 5 and outer sheath 7. The cross-section of the conductor 2 is C-shaped; the cavity inside the conductor 2 is an inner lining layer 1, and the inner lining layer 1 is an insulating material filler; the expansion cable is as follows from the inside to the outside: inner Lining layer 1, conductor 2, insulating layer 3, inner sheath 4, shielding layer 5, metal armor layer 6 and outer sheath 7. Since the cross-section of the conductor is set to C-shaped, the conductor is in a hollow state, and the skin effect of the current is used to increase the conductance of the cable, the current resistance is small, and the material is saved at the same time, and the weight of the conductor part is reduced, so that the cable has a low cost. Low, light weight, small temperature rise and other advantages.

[0031] The conductor is a multi-layer structure, and the numbe...

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Abstract

The invention discloses a diameter-expanding cable comprising a conductor, an insulation layer, an inner sheath, a shielding layer and an outer sheath. The cross section of the conductor is C-shaped; an inner lining layer is arranged in a cavity in the conductor and the inner lining layer adopts an insulating material filler; and the diameter-expanding cable sequentially comprises the inner lining layer, the conductor, the insulation layer, the inner sheath, the shielding layer, a metal armor layer and the outer sheath from inside to outside. A semiconductor shielding layer is arranged on theouter peripheral surface of the inner lining layer; and the semiconductor shielding layers are arranged on the outer peripheral surface and inner peripheral surface of the insulation layer. The diameter-expanding cable has the advantages that the cross section of the conductor is of a C-shaped design, thereby reducing the eddy current loss during the transmission of electrical energy through the cable, utilizing a current skin effect to increase the electrical conductance of the cable, saving materials, reducing the weight of the cable and the like.

Description

technical field [0001] The invention relates to an expanded-diameter cable, which is widely used as a transmission cable for AC and DC power circuits. Background technique [0002] The existing power cables are solid cables, which have problems such as heavy weight, small conductor outer surface, high resistance, fast temperature rise, and poor heat dissipation performance. In addition, due to the current skin effect, the current carrying capacity of the cable is small, and the existence of eddy currents leads to electric energy loss. The loss is large. Due to the rapid temperature rise of the existing cables, the cable insulation layer is easily aged, which limits the service life of the cables. Solid cables use more metal materials, are heavy and costly, and also increase the construction difficulty during cable installation. [0003] The expanded diameter cable is based on the conventional high and low voltage cables, adopts the technology of expanding the outer diamete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/02H01B5/00H01R11/11
Inventor 谭锐
Owner HEFEI POWER SUPPLY COMPANY OF STATE GRID ANHUI ELECTRIC POWER
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