Working cylinder integrated with control valve and high-power hydraulic spring operating mechanism

Abstract

The invention discloses a working cylinder integrated with a control valve and a high-power hydraulic spring operating mechanism. The high-power hydraulic spring operating mechanism is used for an extra-high voltage and ultra-high voltage sulphur hexafluoride circuit breaker. According to the high-power hydraulic spring operating mechanism, the working cylinder is used as a matrix. The high-power hydraulic spring operating mechanism comprises an energy storage module, a control valve module and an oil tank module. The energy storage module is concentrically sleeved outside the working cylinder and is fixed; the control valve module is coaxially arranged in series inside the bottom of the working cylinder; the oil tank module is fixed on the upper end face of the working cylinder; an oil tank of the oil tank module is communicated with the working cylinder and the control valve by high and low voltage oil circuits and a signal oil circuit; and oil circuits are communicated and closed by the control valve module. Due to the working cylinder and the high-power hydraulic spring operating mechanism, the technical problem that the mode of arranging the control valve outside a conventional high-power hydraulic spring operating mechanism is changed into a mode of integrating the control valve inside the working cylinder is solved, so that the radial sealing with a better sealing effect is adopted to replace the axial sealing.

Description

technical field [0001] The invention belongs to the field of high-voltage power transmission and transformation equipment, and relates to a high-power hydraulic spring operating mechanism for a high-voltage circuit breaker, which is used for a high-voltage sulfur hexafluoride circuit breaker. Background technique [0002] The high-power hydraulic spring operating mechanism is used as a drive device for high-voltage circuit breakers. The main structures that appeared in previous products are all integrated models, that is, with the working cylinder as the center, the energy storage cylinder, control valve and other modules are placed horizontally. Installed on the working cylinder, many seals and fasteners are used, the overall force of the mechanism is not good, the mechanism uses too many axial sealing structures, and the high-pressure connection is easy to loosen and leak oil, which reduces the reliability of the whole mechanism. The safety of the circuit breaker is also g...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a working cylinder integrated with a control valve and a high-power hydraulic spring operating mechanism to solve the problem of changing the traditional high-power hydraulic spring operating mechanism with an external control valve to be integrated inside the working cylinder, so that The technical problem that all of them use radial seals with better sealing effect instead of axial seals

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