GAS-TIGHT HEAVY-CURRENT DISCHARGE SWITCH Russian patent published in 2004 - IPC

FIELD: high-voltage pulse engineering; pulse-frequency switching of storage capacitors of high-voltage shaping circuits such as pulse-voltage generators.

SUBSTANCE: proposed discharge switch has insulating case accommodating two axially mounted metal electrodes of difference thickness of which one is hollow electrode with hole that accommodates axially mounted control electrode and current leads running to them and contacting dielectric liquid around discharge switch, these leads being secured at ends of case so that current lead running to hollow electrode with hole encloses hole-free electrode and part of current lead running to the latter; hole-free electrode and its relevant current lead form axially elongated cavity open on dielectric liquid end that has minimal wall thickness near interelectrode gap. Mentioned cavity accommodates conducting surface components whose first part is assembled in groups concentrically disposed on electrode section having smallest wall thickness. Second part is disposed on remaining surface of electrode and relevant current lead beyond space confined by area of thin-walled electrode section throughout entire depth of cavity. Disposed on axial section of current-lead radial part near point where it contacts electrode with hole are groups of heat and electricity conducting surface components contacting dielectric liquid, total surface area of each of them being smaller than that of radial part of current lead and reduces as group recedes farther from it. All surface components of discharge switch can be built integral with location point. Ribs and tops of all heat and electricity conducting surface components disposed beyond cavity may be rounded off. Axial part of current lead running to electrode with hole that encloses hole-free electrode and part of current lead running to the latter can mount additional groups of heat and electricity conducting surface components contacting dielectric liquid.

EFFECT: enlarged service life in pulse-frequency mode without forced coolant circulation.

4 cl, 1 dwg