A running-in device for hydraulic operating mechanism on high-voltage sf6 circuit breaker

Abstract

The embodiment of the invention discloses a running-in device of a hydraulic operating mechanism used for a high-pressure SF6 breaker. The running-in device of the hydraulic operating mechanism used for the high-pressure SF6 breaker comprises a totally enclosed columnar box body, a piston, medium containing device, a driving connecting rod and damping mediums. The piston is embedded inside the box body, the outer surface of the piston is abutted against the inner wall of the box body, and the box body is divided into an upper cavity and a lower cavity by the piston, wherein the upper cavity and the lower cavity are not communicated with each other. The medium containing device is arranged outside the box body, the medium containing device is connected with the upper cavity and the lower cavity through two guide pipes, and the communication is achieved. One end of the driving connecting rod is placed inside the lower cavity and fixed on the piston, and the other end of the driving connecting rod is placed outside the box body and is matched with the hydraulic operating mechanism. The upper cavity and the lower cavity are filled with the damping mediums. When the driving connecting rod moves, the piston is driven to slide along the inner wall of the box body in the direction of facing or deviating from the lower cavity. According to the running-in device of the hydraulic operating mechanism used for the high-pressure SF6 breaker, the adaptability is high, aiming at the damping changing condition of various high-pressure SF6 breakers in the divide-shut braking process, the real-time dynamic closed-loop adjustment on the damping is achieved, the installing and fitting testing time of the hydraulic operating mechanism and the high-pressure SF6 breaker is shortened, and the delivering efficiency and the quality of the mechanism are improved.

Description

technical field [0001] The invention relates to the technical field of high-voltage circuit breakers, in particular to a running-in device for a hydraulic operating mechanism on a high-voltage SF6 circuit breaker. Background technique [0002] The high-voltage SF6 (sulfur hexafluoride) circuit breaker is the most important control element in the high-voltage transmission system. The operating mechanism provides the driving force for the opening and closing action of the high-voltage SF6 circuit breaker. According to the different voltage levels of the high-voltage SF6 circuit breaker , the operating work required to drive the high-voltage SF6 circuit breaker is also different. [0003] The operating mechanism on the high-voltage SF6 circuit breaker includes a spring operating mechanism and a hydraulic operating mechanism; among them, the spring operating mechanism uses a spring as an energy storage unit, and a mechanical rod as an energy transmission medium to drive the high...

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Problems solved by technology

[0006] The inventors have found that both of the above two running-in methods have deficiencies. The disadvantages are: in the first running-in method, this method is not adaptable, not only cannot accurately simulate the opening and closing load of the high-voltage SF6 circuit breaker In the second running-in mode, when the counterweight is large, the setting of the vent hole has insufficient influence on the damping change, especially in the case of When the damping effect of the vent hole fails during heavy low-speed operation and closing action, it is impossible to precisely control and adjust the damping by adjusting the vent hole

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