Extra-high-voltage breaker permanent-magnet locked hydraulic operating mechanism
A technology of hydraulic operating mechanism and circuit breaker, which is applied in the direction of protection switch operation/release mechanism, circuit, electrical components, etc. It can solve the problem of unstable floating state of circuit breaker, achieve high reliability, avoid explosion, and complete functions
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[0020] like figure 1 As shown, the UHV circuit breaker permanent magnet locking hydraulic operating mechanism of the present invention includes a hydraulic cylinder 1 and a power shaft 2 driven by the hydraulic cylinder 1. The hydraulic cylinder 1 is a differential hydraulic cylinder, and the hydraulic cylinder 1 The oil passage port of the rod chamber is connected with the main pressure accumulator 3 through the oil pipe, and the oil passage port of the rodless chamber of the hydraulic cylinder 1 is connected to the main pressure accumulator 3 through the main reversing valve 4, and the two sides of a passage of the main reversing valve 4 are respectively connected by pipelines The oil passage port of the rodless chamber of hydraulic cylinder 1 and the main pressure accumulator 3, the two sides of the other channel are respectively connected to the oil passage port of the rodless chamber of hydraulic cylinder 1 and the fuel tank 5 through pipelines, and the oil outlet of fuel ...
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