Loading patent…
AssigneeEpiroc Rock Drills Aktiebolag
InventorsErik JAKOBSSON, Harald Franz Arno MERKEL, André SKYTTEDAL
Estimating the term…
A drilling arrangement for high voltage electro pulse rock drilling, the drilling arrangement including a pulsed power generator for generating high voltage electro pulses; a drill tool for forming a drill hole by conveying the generated high voltage electro pulses, via electrodes in the drill tool, through mineral substrate; at least one switch, arranged between the pulsed power generator and the electrodes, which switch when it is closed allows high voltage electro pulses from the pulsed power generator to reach the electrodes; and a switch control device. The switch is preferably a controllable switch including a switch closing arrangement, which is controlled by receiving a switch trigger signal emitted from the switch control device to close the switch. The switch control device is preferably arranged to synchronize the switch trigger signal with the high voltage electro pulses from the pulsed power generator.
A drilling arrangement for high voltage electro pulse rock drilling, the drilling arrangement comprising:
A method for high voltage electro pulse rock drilling using a drilling arrangement comprising a pulsed power generator, a drill tool comprising electrodes, and a controllable switch, arranged between the pulsed power generator and the electrodes, wherein the switch when it is closed allows high voltage electro pulses from the pulsed power generator to reach the electrodes, the method comprising:
(canceled)
Dependencies are inferred from the claim text.