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Title:
LIQUID PHASE IMPREGNATION-BASED REINFORCEMENT METHOD AND DEVICE FOR REPAIR INTERFACE OF FLEXIBLE JOINT OF HIGH-VOLTAGE CABLE
Document Type and Number:
WIPO Patent Application WO/2023/221460
Kind Code:
A1
Abstract:
The present application relates to a liquid phase impregnation-based reinforcement method and device for a repair interface of a flexible joint of a high-voltage cable. The method comprises the following steps: step 1, forming a surface of a reversed stress cone; step 2, wrapping the surface of the reversed stress cone with dust-free cloth, heating the outer side of the dust-free cloth, and treating the surface of the reversed stress cone using a liquid-phase impregnation method; step 3, preheating a joint, subjecting an insulation-restored cross-linked polyethylene material to extrusion molding or lapping, and cross-linking restored insulation in a preset temperature range and a preset pressure range; and step 4, polishing the surface of the restored insulation, manufacturing a stress cone, and restoring an outer shielding layer.

Inventors:
HOU SHUAI (CN)
FU MINGLI (CN)
LI XIAOLIN (CN)
FAN LINGMENG (CN)
JIA LEI (CN)
ZHU WENBO (CN)
HUI BAOJUN (CN)
ZHAN YUNPENG (CN)
FENG BIN (CN)
ZHANG YIFAN (CN)
Application Number:
PCT/CN2022/136800
Publication Date:
November 23, 2023
Filing Date:
December 06, 2022
Export Citation:
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Assignee:
ELECTRIC POWER RES INSTITUTE CHINA SOUTHERN POWER GRID (CN)
International Classes:
H02G15/08; H02G1/16
Foreign References:
CN115065025A2022-09-16
CN106374397A2017-02-01
CN113746035A2021-12-03
CN108879496A2018-11-23
CN106505489A2017-03-15
CN206272207U2017-06-20
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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