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Title:
METHOD FOR MANUFACTURING LONGITUDINAL AND RADIAL WATER-BLOCKING MEDIUM-VOLTAGE POWER CABLE, AND CABLE
Document Type and Number:
WIPO Patent Application WO/2020/103660
Kind Code:
A1
Abstract:
A method for manufacturing a longitudinal and radial water-blocking medium-voltage power cable, comprising the steps of: 1) manufacturing wire cores, and 2) manufacturing a cable core, and 3) manufacturing a protective layer; step 1) comprises: preparing conductors, and coating each conductor with a first water-blocking expanded tape layer, a semi-conductive conductor shielding layer, a water-resistant tree-type cross-linked polyethylene insulating layer, and a semi-conductive insulating shielding layer in sequence; coating the cable prepared in step 1) with a second water-blocking expanded tape layer and a metal shielding layer in sequence; and coating the cable prepared in step 2) with a first wrapping tape layer, a radial waterproof layer, and a first sheath layer in sequence. The first water-blocking expanded tape layer is formed by wrapping a semi-conductive water-blocking tape; the semi-conductive conductor shielding layer, the water-resistant tree-type cross-linked polyethylene insulating layer, and the semi-conductive insulating shielding layer are formed by extrusion; the second water-blocking expanded tape layer is formed by wrapping a semi-conductive water-blocking tape; the first wrapping tape layer is formed by wrapping a wrapping tape; the radial waterproof layer is formed by longitudinally wrapping the first wrapping tape layer with an aluminum-plastic composite tape in the axial direction of the cable core.

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Inventors:
LING GUOZHEN (CN)
LIU XIONGJUN (CN)
CHEN LIN (CN)
Application Number:
PCT/CN2019/114389
Publication Date:
May 28, 2020
Filing Date:
October 30, 2019
Export Citation:
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Assignee:
JIANGSU SHANGSHANG CABLE GROUP (CN)
International Classes:
H01B7/02; H01B7/282; H01B9/02; H01B13/02; H01B13/32
Foreign References:
CN109585064A2019-04-05
CN102969069A2013-03-13
CN201048061Y2008-04-16
CN203026251U2013-06-26
CN103971843A2014-08-06
US5306867A1994-04-26
Attorney, Agent or Firm:
NANJING KEKUO INTELLECTUAL PROPERTY FIRM (CN)
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