ANTIOXIDANT ADDITION DEVICE AND METHOD FOR 500 KV CROSS-LINKED POLYETHYLENE INSULATING MATERIAL - ELECTRIC POWER RES INSTITUTE CHINA SOUTHERN POWER GRID

Title:

ANTIOXIDANT ADDITION DEVICE AND METHOD FOR 500 KV CROSS-LINKED POLYETHYLENE INSULATING MATERIAL

Document Type and Number:

WIPO Patent Application WO/2024/060391

Kind Code:

A1

Abstract:

An antioxidant addition device for a 500 kV cross-linked polyethylene insulating material, comprising: a heating hopper module and a heat insulation pipeline module, the heating hopper module comprising a feeding port, a heating jacket, a material bin and a filter screen, and the heat insulation pipeline module comprising a liquid metering pump, a stainless steel liquid pipe and a discharging port. An antioxidant is added into the material bin via the feeding port, and is heated in the material bin by means of the heating jacket to form a liquid-phase antioxidant; then same is filtered by means of the filter screen, is metered by the liquid metering pump and then enters the stainless steel liquid pipe; and finally via the discharging port, same is put into use. The liquid-phase addition mode enables the antioxidant and polyethylene resin to be fully mixed, thereby avoiding non-uniform material particles and uneven insulation performance caused by inaccurate addition of solid materials. In addition, raw materials are metered by using high-precision devices, such that the proportion of a produced cross-linked polyethylene material better follows a design formula. Therefore, the flexibility of selecting additives during formula designing processes of cross-linked polyethylene insulating materials is improved.

Inventors:

HOU SHUAI (CN)
FU MINGLI (CN)
FAN LINGMENG (CN)
JIA LEI (CN)
ZHAN YUNPENG (CN)
ZHU WENBO (CN)
HUI BAOJUN (CN)
FENG BIN (CN)
ZHANG YIFAN (CN)

Application Number:

PCT/CN2022/133116

Publication Date:

March 28, 2024

Filing Date:

November 21, 2022

Export Citation:

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Assignee:

ELECTRIC POWER RES INSTITUTE CHINA SOUTHERN POWER GRID (CN)

International Classes:

B29C48/29; B29B13/10; B29C48/92

Foreign References:

CN104200931A	2014-12-10
CN202169691U	2012-03-21
CN112280149A	2021-01-29
US20190070752A1	2019-03-07
JP2012007111A	2012-01-12

Attorney, Agent or Firm:

ADVANCE CHINA IP LAW OFFICE (CN)

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