Title:
PHOTOELECTRIC COMPOSITE CABLE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/010804
Kind Code:
A1
Abstract:
A photoelectric composite cable for an oil well is provided in the invention. The photoelectric composite cable comprises an optical unit, a conductive layer, a high-temperature resistant insulation layer and an external steel pipe, wherein the conductive layer covers a surface of the optical unit and is formed by laser continuous welding, the high-temperature resistant insulation layer is formed outside the conductive layer by continuous extrusion, and the external steel pipe covers the high-temperature resistant insulation layer. In the photoelectric composite cable, the optical unit and the conductive layer are of a coaxial structure, the space inside the tube of the photoelectric composite cable is effectively utilized, so that an optical fiber can have enough space for added optical fiber sag so as to adapt to thermal expansion/extension or external tensile stress of the optical cable. In addition, the thickness of the insulation layer outside the conductive layer can also be increased, and the insulation properties of the conductive layer can be improved. A manufacturing method of the photoelectric composite cable is also provided in the invention.
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Inventors:
LI MING (CN)
HE CANGPING (CN)
LU JIE (CN)
MIAO XUGUANG (CN)
XUE HAIJUN (CN)
HE CANGPING (CN)
LU JIE (CN)
MIAO XUGUANG (CN)
XUE HAIJUN (CN)
Application Number:
PCT/CN2017/101232
Publication Date:
January 17, 2019
Filing Date:
September 11, 2017
Export Citation:
Assignee:
ZHONGTIAN POWER OPTICAL CABLE CO LTD (CN)
International Classes:
H01B9/00; H01B7/28; H01B13/00; G02B6/44
Foreign References:
| CN102074301A | 2011-05-25 | |||
| CN203276901U | 2013-11-06 | |||
| CN102930934A | 2013-02-13 | |||
| JPH06119838A | 1994-04-28 |
Attorney, Agent or Firm:
SHENZHEN SCIENBIZIP INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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