Method and system for determining a variation in a flushing medium flow and rock drilling apparatus
US9416605B2 · kind B2 · utility
0Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 25, 2011 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Feb 17, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.