METHOD OF PRODUCING A HYDROGEN-FILLED DISCHARGER Russian patent published in 2019 - IPC H01J17/20 H01J9/38 

FIELD: instrument engineering.

SUBSTANCE: invention relates to gas-discharge engineering and can be used in development of gas-filled dischargers with hydrogen filling. Proposed method comprises placement of first metal-ceramic electrode assembly in hollow metal case composed of hollow truncated cone insulator with first electrode on its smaller base and second electrode assembly consisting of threaded cover with second electrode along its centre, sealing of the discharger, filling the shell with electronegative gas, training with subsequent removal of gas from the shell, washing it with hydrogen and filling with working gas to a pressure which provides the specified dynamic breakdown voltage with excess of 5÷10 % relative to equilibrium state voltage, when dynamic breakdown voltage is equal to sliding voltage of breakdown along the insulator, after which voltage pulses are supplied to the electrode of the discharger and trained until stabilization of the dynamic breakdown voltage U_bd.dyn., gradually reducing pressure until setting U_bd.dyn. at level U_sl.bd. with the possibility of breakdown on the insulator and achievement of the specified value of dynamic breakdown voltage, lying within: 0.9U₀<U_bd.dyn.<1.05U₀, where U₀ is equilibrium state voltage, when U_bd.dyn.=U_sl.bd., is ensured by the fact that after placement of electrode assemblies in the metal housing the value of static breakdown voltage of interelectrode gap U_st. is measured on air, then value of measured voltage U_st. is compared with value of static voltage of breakdown of rated inter-electrode gap of each type of discharger U_st.rat. and their difference is reduced by changing the interelectrode distance to the value, at which static breakdown voltage is equal to static voltage of breakdown of rated discharge gap with tolerance ±0.3 kV, after which the discharger is sealed.

EFFECT: reduced labour intensiveness of manufacture at maintaining high stability of dynamic breakdown voltage (relative root-mean-square spread of dynamic breakdown voltage of about 1 %) and high durability – not less than 10⁷ breakdowns in the specified operating mode.

1 cl, 3 dwg