Sulfur hexafluoride gas density relay

Abstract

The invention discloses a sulfur hexafluoride gas density relay which is high in shock resistance, a signal generator is good in connecting point contacting and electrical performance, service life is long, and accuracy is high. The sulfur hexafluoride gas density relay comprises a shell body, a base, an end base, a Burdon tube, a temperature compensate element, a machine core, a plurality of microswitches, switch adjusting mechanisms and a signal trigger mechanism. The end base, the Burdon tube, the temperature compensate element, the machine core, the plurality of microswitches, the switch adjusting mechanisms and the signal trigger mechanism are arranged in the shell body. The number of the switch adjusting mechanisms is the same as that of the microswitches. Each switch adjusting mechanism comprises a fixing piece, a rotating shaft rivet a spring and a rotating piece. One end of each fixing piece is connected with the other end of each rotating piece through each rotating shaft rivet and each spring. The other end of each fixing piece is fixed on the base, so that each rotating shaft rivet and a sector gear shaft are coaxial. The other end of each rotating piece is fixedly provided with each microswitch. The signal trigger mechanism comprises a signal trigger mechanism shaft and a plurality of cams. The signal trigger mechanism shaft is vertically fixed on the surface of a sector gear. The cams are arranged on the signal trigger mechanism shaft and abut against connecting point operation handles of the microswitches in a one-to-one-corresponding mode.

Description

technical field [0001] The invention relates to a sulfur hexafluoride gas density relay. Background technique [0002] At present, oil-free gas density relays with micro switches as contacts are generally used to monitor the gas density of sulfur hexafluoride in electrical equipment, such as Chinese patents or patent applications 200510110648.5, 200520045890.4, 200520045891.9, 200520115321.2, 200810201462.4, Gas density relays disclosed in 200910195174.7, 201020190271.5 and 201010171798.8 (such as figure 1 and figure 2 As shown) generally includes dial 1, pointer 2, Baden tube 3, temperature compensation element 4, base 5, movement with display amplification mechanism 6, connecting rod 7, housing 8, joint 9, micro switch 101, 102, 103, adjusting parts 111, 112, 113, contact operating arm 12, connecting arm 13, end seat 14, wiring seat 15, watch glass 16, cover case 17, printed circuit board 18, positioning plate 19, fixing Plate 20 , wire 21 and sulfur hexafluoride gas d...

AI Technical Summary

Problems solved by technology

When the Baden tube 6 moves, the sector gear shaft 24 with the movement 2 rotates, so that the adjusting screw rotates and touches the operating arm of the micro switch, and the operating arm is driven to press the movable contact of the switch. When it is rotated to the end face of the adjusting screw When it is perpendicular to the operating arm of the micro switch, the adjustment screw is stuck and cannot be rotated, so it is difficult to realize the full-scale density relay of -0.1 ~ 0.9MPa, especially difficult to realize the display with the initial value of -0.1MPa , it cannot be displayed when vacuuming, and it is difficult to popularize and apply, so innovation is very much needed

Images