The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2025
Filed:
Nov. 21, 2022
Electric Power Research Institute. China Southern Power Grid, Guangzhou, CN;
Shuai Hou, Guangzhou, CN;
Mingli Fu, Guangzhou, CN;
Lingmeng Fan, Guangzhou, CN;
Lei Jia, Guangzhou, CN;
Yunpeng Zhan, Guangzhou, CN;
Wenbo Zhu, Guangzhou, CN;
Baojun Hui, Guangzhou, CN;
Bin Feng, Guangzhou, CN;
Jie Liu, Guangzhou, CN;
ELECTRIC POWER RESEARCH INSTITUTE. CHINA SOUTHERN POWER GRID, Guangzhou, CN;
Abstract
An antioxidant addition device for a 500 kV cross-linked polyethylene insulating material includes a heating hopper module and a heat-insulation conduit module. The heating hopper module includes an inlet port, a heating jacket, a material bin, and a filter screen. The heat-insulation conduit module includes a liquid metering pump, a stainless steel liquid-conduit, a heat-insulation unit, and an outlet port. The antioxidant is added into the material bin through the inlet port, heated in the material bin to a liquid phase antioxidant, filtered through the filter screen, then metered by the liquid metering pump, then passed into the stainless steel liquid-conduit, and finally discharged through the outlet port for use.