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Patent Searching and Data


Title:
HYDRAULIC OPERATING MECHANISM AND SWITCH
Document Type and Number:
WIPO Patent Application WO/2019/015163
Kind Code:
A1
Abstract:
Provided are a hydraulic operating mechanism and a switch using the hydraulic operating mechanism to achieve adjustment and control of a "close-open" time of a circuit breaker. The hydraulic operating mechanism comprises a working cylinder (7) having a working cylinder piston rod (8), and a main valve (13) for controlling movement of the working cylinder piston rod (8), and a closing valve connected to the main valve (13) by controlling an oil passage. The closing valve is controlled by a closing electromagnet (17). The hydraulic operating mechanism further comprises an auxiliary switch (3) for controlling the opening and closing of a circuit where the closing electromagnet (17) is located. The hydraulic operating mechanism further comprises a signal cylinder (4) that triggers the auxiliary switch (3) during a reciprocating movement of the piston rod. Two chambers of the signal cylinder (4) are respectively in communication with the two chambers of the working cylinder (7). During operation, the piston rod of the signal cylinder (4) can move only when the working cylinder (7) drives the switch to close in position, and the auxiliary switch (3) is triggered to control the power loss of the closing electromagnet (17). The occurrence of the opening of the circuit breaker after the circuit breaker is not closed in position can be avoided, and the control to the "close-open" time of the circuit breaker is realized.

Inventors:
GU GENQUAN (CN)
PANG QINGPING (CN)
SUN PENG (CN)
ZOU GAOPENG (CN)
ZHAO YAPING (CN)
SUN QING (CN)
Application Number:
PCT/CN2017/108693
Publication Date:
January 24, 2019
Filing Date:
October 31, 2017
Export Citation:
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Assignee:
HENAN PINGGAO ELECTRIC CO LTD (CN)
PINGGAO GROUP CO LTD (CN)
STATE GRID CORP CHINA (CN)
International Classes:
H01H3/24; H01H71/10
Foreign References:
CN203733655U2014-07-23
CN104319120A2015-01-28
CN104465245A2015-03-25
CN101393816A2009-03-25
CN105443463A2016-03-30
JP2003206905A2003-07-25
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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