Title:
COLD-ACCUMULATION EXTERNAL COOLING SYSTEM FOR DIRECT CURRENT CONVERTER VALVE, AND OPERATION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2015/067132
Kind Code:
A1
Abstract:
The present invention provides a cold-accumulation external cooling system for a direct current converter valve, and an operation method thereof. The system comprises an air cooler (2), a plate-type heat exchanger (3), a water chilling unit, a fixed-frequency cooling pump (6), a buffer tank (7), a thermocline cold-accumulation groove (8), a variable-frequency cooling pump (9), and a cooling water pump (10). The plate-type heat exchanger (3) has a hot side and a cold side, and an improvement thereof is that, the hot side of the plate-type heat exchanger (3) is connected in series with a cooling device (1), the air cooler (2), the plate-type heat exchanger (3), and the cooling water pump (10) to form a circulation loop; and the cold side of the plate-type heat exchanger (3) is connected in series with the thermocline cold-accumulation groove (8) and the variable-frequency cooling pump (9) to form a cold supply loop for a cold-accumulation tank; the water chilling unit, the fixed-frequency cooling pump (6), and the buffer tank (7) are connected in series to form a cold supply loop for the water chilling unit. Compared with the prior art, the cold-accumulation external cooling system for a direct current converter valve and the operation method thereof have a wide range of a cold-accumulation temperature difference; therefore, the system is high-temperature resistant in summer, and is anti-freezing in winter by accumulating heat.
Inventors:
ZHA KUNPENG (CN)
WEI XIAOGUANG (CN)
ZHOU JIANHUI (CN)
WEN YULIANG (CN)
WU WENWEI (CN)
WANG HANG (CN)
LUAN HONGZHOU (CN)
WANG ZHIXIANG (CN)
WEI XIAOGUANG (CN)
ZHOU JIANHUI (CN)
WEN YULIANG (CN)
WU WENWEI (CN)
WANG HANG (CN)
LUAN HONGZHOU (CN)
WANG ZHIXIANG (CN)
Application Number:
PCT/CN2014/089626
Publication Date:
May 14, 2015
Filing Date:
October 28, 2014
Export Citation:
Assignee:
STATE GRID CORP CHINA (CN)
STATE GRID SMART GRID RES INST (CN)
CHINA EPRI ELECTRIC POWER ENG (CN)
STATE GRID SHANDONG ELECTRIC POWER COMPANY ELECTRIC POWER RES INST (CN)
GUANGZHOU GOALAND ENERGY CONSERVATION TECH CO LTD (CN)
STATE GRID SMART GRID RES INST (CN)
CHINA EPRI ELECTRIC POWER ENG (CN)
STATE GRID SHANDONG ELECTRIC POWER COMPANY ELECTRIC POWER RES INST (CN)
GUANGZHOU GOALAND ENERGY CONSERVATION TECH CO LTD (CN)
International Classes:
H05K7/20; H02M1/00
Foreign References:
| CN103582396A | 2014-02-12 | |||
| CN102435032A | 2012-05-02 | |||
| CN102412706A | 2012-04-11 |
Attorney, Agent or Firm:
AMBOYNA INTELLECTUAL PROPERTY AGENT CO., LTD. (CN)
北京安博达知识产权代理有限公司 (CN)
北京安博达知识产权代理有限公司 (CN)
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