Pulsed water-jet apparatus

摘要

A pulsed water-jet apparatus comprising a high pressure water pump delivering water to a nozzle and a means of interruption disposed at or near the nozzle periodically interrupting the flow of water passing through the nozzle thereby generating a pulsed water-jet. An accumulator is disposed between the pump and the nozzle, wherein the accumulator is a high pressure accumulator storing energy between pulses of the pulsed water-jet and the pressure drop at the accumulator inlet due to the release of each pulse of the pulsed water-jet is less than twenty percent.