Method and system for determining a variation in a flushing medium flow and rock drilling apparatus
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United States of America Patent
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Aug 16, 2016
Grant Date -
Jul 4, 2013
app pub date -
Aug 25, 2011
filing date -
Aug 26, 2010
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Abstract
The present invention relates to a method for determining a variation of a flushing medium flow at a rock drilling apparatus, where a compressor (8;301) discharges a flow of pressurized gas, where said gas flow at least partially is used as flushing medium during drilling with a tool (3), wherein, during drilling, said flushing medium is led to said tool (3) for flushing away drilling remnants. The method includes to determine a rate of a pressure variation of said flushing medium, and generating a signal when said determined rate exceeds a first value. The invention also relates to a system and a rock drilling apparatus.
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