FIELD: physics.
SUBSTANCE: apparatus has a housing with a central flushing hole, a centre electrode which is electrically insulated from the housing and is placed between insulators, as well as electric boards inserted in recesses in the housing in its sealed part, separated by sealing elements, wherein the fixing element of the insulator, situated in the socket part of the housing, is in form of matching protrusions and grooves made in said insulator, the socket part of the housing and the casing of the centre electrode, and the other insulator of the centre electrode, situated in the opposite socket part of the housing, is inserted in a counter-clockwise thread.
EFFECT: improved operational reliability of fixing the centre electrode and simple design.
1 dwg
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