HIGH-PRECISION SF₆ GAS DENSITY RELAY AND METHOD FOR IMPLEMENTING SAME

摘要

A high-precision SF₆ gas density relay, comprising a gas density relay housing (3), as well as a base (19), an end seat (18), a bourdon tube (6), a temperature compensation element (7), a signal regulating mechanism (12) and a plurality of micro switches (91, 92, 93) acting as signal generators which are arranged in the housing (3). One end of micro switch contact triggering elements (201, 202, 203) is fixed in the housing (3), and the other end thereof is arranged in correspondence to buttons (9101, 9102, 9103) of the button-type micro switches (91, 92, 93) and abuts the buttons (9101, 9102, 9103) of the micro switches (91, 92, 93) in a one-to-one correspondence. When a gas density value changes, the bourdon tube (6) and the temperature compensation element (7) generate displacement, such displacement sequentially drives the micro switch contact triggering elements (201, 202, 203) by means of the signal triggering mechanism, and the micro switch contact triggering elements (201, 202, 203) change position, so that the micro switches (91, 92, 93) issue corresponding signals to complete the functions of the gas density relay. The presentdensity relay has the advantages of high precision and good contact conductivity and may be applied well to SF₆ electrical equipment.