Hydraulic spring operating mechanism and high-voltage breaker

Abstract

The present invention provides a hydraulic spring operating mechanism which cooperates with a pressure tester and comprises a working cylinder with oil and a piston rod, wherein the working cylinder is provided with an opening pressure test channel and a closing pressure test channel; a first pressure sensor used for acquiring dynamic oil pressure intensity in the working cylinder in real time during opening of the mechanism is embedded in the opening pressure test channel, one end of the first pressure sensor with a probe is arranged in the oil of the working cylinder, the other end of the first pressure sensor is connected with the pressure tester through a lead; a second pressure sensor used for acquiring dynamic oil pressure intensity in the working cylinder in real time during closing of the mechanism is embedded in the closing pressure test channel, one end of the second pressure sensor with a probe is arranged in the oil of the working cylinder, the other end of the second pressure sensor is connected with the pressure tester through a lead. Through adoption of the hydraulic spring operating mechanism of the present invention, dynamic oil pressure intensity in a working area during opening and closing processes can be actually measured, then optimization and improvement is further performed, thereby achieving the purpose of improving stability and service life of the hydraulic spring operating mechanism.

Description

technical field [0001] The invention relates to the technical field of hydraulic operating mechanisms, in particular to a hydraulic spring operating mechanism and a high-voltage circuit breaker. Background technique [0002] The high-voltage circuit breaker is the most important control element in the high-voltage transmission system, and the operating mechanism is the core component of the high-voltage circuit breaker, which provides the driving force for the opening and closing of the high-voltage circuit breaker, and according to the operating voltage of the high-voltage circuit breaker Different grades provide different operating power required to drive high-voltage circuit breakers. At present, in most high-voltage circuit breakers, the operating mechanism adopts a hydraulic spring operating mechanism, which uses a spring or compressed gas as an energy storage unit, hydraulic oil as an energy transmission medium, and drives the piston to move to achieve high-voltage cir...

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Problems solved by technology

[0004] In the prior art, the hydraulic spring operating mechanism only indirectly calculates the pressure of the static oil in the working chamber through the position change of the disc spring compression, but cannot obtain the pressure of the dynamic oil in the working chamber during the opening and closing process, especially It is the pressure at the end of opening and closing. The main reason is that when the oil cylinder is in the end of opening and closing, the change of its internal flow field is very complicated, which makes the calculation of pressure very complicated and has a large error

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