US 11,791,068 B2
Post insulator and direct current power transmission device
Licheng Lu, Beijing (CN); Faqiang Yan, Beijing (CN); Bo Qi, Beijing (CN); Zhiyi Chong, Beijing (CN); Chengrong Li, Beijing (CN); Zhijun Guo, Beijing (CN); Xiao Yang, Beijing (CN); and Yanxia Ding, Beijing (CN)
Assigned to STATE GRID CORPORATION OF CHINA, Beijing (CN); SINOMA ADVANCED MATERIALS CO., LTD., Beijing (CN); NORTH CHINA ELECTRIC POWER UNIVERSITY, Beijing (CN); and SINOMA JIANGXI INSULATOR AND ELECTRICITY CO., LTD., Pingxiang (CN)
Appl. No. 17/424,335
Filed by STATE GRID CORPORATION OF CHINA, Beijing (CN); SINOMA ADVANCED MATERIALS CO., LTD., Beijing (CN); NORTH CHINA ELECTRIC POWER UNIVERSITY, Beijing (CN); and SINOMA JIANGXI INSULATOR AND ELECTRICITY CO., LTD., Pingxiang (CN)
PCT Filed Oct. 14, 2020, PCT No. PCT/CN2020/120849
§ 371(c)(1), (2) Date Jul. 20, 2021,
PCT Pub. No. WO2021/196562, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 202010256071.3 (CN), filed on Apr. 2, 2020.
Prior Publication US 2022/0310288 A1, Sep. 29, 2022
Int. Cl. H01B 17/14 (2006.01); H01B 17/32 (2006.01); H01B 17/42 (2006.01); H02J 3/36 (2006.01)
CPC H01B 17/145 (2013.01) [H01B 17/32 (2013.01); H01B 17/42 (2013.01); H02J 3/36 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A post insulator, comprising:
an insulating post comprising a first end and a second end that are opposite to each other;
a high-voltage-end grading ring connected to the first end of the insulating post, the high-voltage-end grading ring being insulated from the insulating post;
a grounding-end grading ring connected to the second end of the insulating post, the grounding-end grading ring being insulated from the insulating post; and
a charge control ring disposed on an outer surface of the insulating post, the charge control ring being insulated from the insulating post, and the charge control ring being configured to accumulate surface charges.