Hydraulic electromagnetic reversing mechanism for high-voltage circuit breaker hydraulic spring operation device

Abstract

The invention relates to a hydraulic electromagnetic reversing mechanism for a high-voltage circuit breaker hydraulic spring operation device. The hydraulic electromagnetic reversing mechanism is provided with a closing electromagnetic valve, a first opening electromagnetic valve, a second opening electromagnetic valve, a valve body and a reversing assembly. One closing electromagnetic valve and two opening electromagnetic valves are mounted on the upper plane of the valve body, the reversing assembly is arranged in the valve body, and the reversing assembly achieves the change of oil circuit directions under the control of the closing electromagnetic valve, the first opening electromagnetic valve and the second opening electromagnetic valve. According to the hydraulic electromagnetic reversing mechanism for the high-voltage circuit breaker hydraulic spring operation device, a high-performance non-standard sealing ring which is self-manufactured according to the characteristics of the hydraulic electromagnetic reversing mechanism is adopted, the phenomenon of oil leakage is completely avoided, a slow separation prevention function is added, the reversing action is more flexible, reliable and stable, obtuse angle sealing and linear sealing are adopted at the sealing position of a valve opening, a good sealing effect is achieved, and the demand of the hydraulic electromagnetic reversing mechanism is met.

Description

technical field [0001] The invention relates to an electromagnetic reversing mechanism, in particular to a hydraulic electromagnetic reversing mechanism used for a hydraulic spring operating device of a high-voltage circuit breaker. Background technique [0002] High-voltage circuit breakers are used in high-voltage power transmission and transformation lines. They are the most important control and protection equipment in power plants, substations and power systems. They can disconnect or connect the no-load current or load current in high-voltage circuits in normal operation. , When the line fails, it can automatically and quickly cut off the power supply to prevent the accident from expanding. The mission of the circuit breaker is reflected in the opening and closing action. The opening and closing action is realized through the operating device. The operating device of the circuit breaker in the circuit of 252KV and above adopts the hydraulic spring operating device, and...

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Problems solved by technology

[0004] In view of the disadvantages of the current hydraulic electromagnetic reversing mechanism, such as poor sensitivity and reliability, oil leakage, large volume, etc., the technical problem to be solved by the present invention is to provide a reliable performance, no oil leakage, not affected by the environment and Hydraulic electromagnetic reversing mechanism with small size and low cost

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