GAS-FILLED HYDRAULIC ACCUMULATOR Russian patent published in 1999 - IPC

FIELD: mechanical engineering; hydraulic operating mechanisms of high-voltage circuit breakers. SUBSTANCE: accumulator has power vessel with sectionalized internal space provided with neck for communicating with hydraulic actuator and gas filler valve. Novelty is providing metal bellows mounted inside vessel so that one end of bellows is fixed through sealed joint to vessel wall within section with built-in filler valve and other, loose, end is hermetically sealed by metal lid. Accumulator is designed for continuous operation under all environmental conditions. EFFECT: improved reliability, reduced space requirement, facilitated maintenance. 3 cl, 1 dwg