FIELD: drilling.
SUBSTANCE: invention relates to drilling hydraulic cutting heads. Hydraulic cutting head comprises several nozzles in rotating nozzle assembly for cutting drill hole in mine rock, wherein said nozzle is supplied drilling fluid at high pressure to form jet for cutting of adjacent mine rock. Said nozzle comprises one or more directed mainly in axial direction guide nozzles and one or more directed mainly radial expansion of nozzles. At least guide nozzles comprise not convergent outlet section, so that jet from it, has, in fact, constant cross section in zone adjacent to outlet section. Front part of rotating nozzle assembly comprises guide nozzle made with considerably smaller diameter than next part of rotating nozzle assembly containing guide nozzle.
EFFECT: technical result is higher drilling speed.
8 cl, 7 dwg
| Title |
Year |
Author |
Number |
| HYDRAULIC DRILLING HEAD WITH SLIDING CALIBRATION RING |
2012 |
|
RU2586347C2 |
| SYSTEM AND METHOD FOR REMOTE DETERMINATION AND CHANGING OF CUTTING MODES DURING COKE REMOVAL |
2004 |
|
RU2343178C2 |
| DURABLE DRILL BIT FOR DRILLING BLASTHOLES IN HARD ROCK (OPTIONS) |
2017 |
- Biverz, Toni Dzhek
- Kongamnach, Amnach
|
RU2747633C2 |
| DRILL BIT WITH FIXED CUTTERS WITH FLUX GUIDE |
2015 |
- Moslemi Ali Akbar
- Syu Tsziintszen Albert
|
RU2675615C2 |
| DRILLING SYSTEM WITH BARREL EXPANSION UNIT |
2016 |
- Kleuters, Nikolaus
- Pretorius, Daniel Coenraad
- Jordaan, Barend Jacobus
- Germishuys, Louis
- Goodwin, Nicolaas Bodenstein
- Sheppard, Gareth Robert
|
RU2712866C2 |
| METHOD AND DEVICE FOR TRENCHLESS LAYING OF PIPELINES |
2014 |
- Lubberger Mikhael
- Pfeff Diana
|
RU2645685C2 |
| SELF-MOVING BORING DEVICE AND METHOD OF REMOVING METHANE GAS FROM SUBTERRANEAN COAL LAYER |
1996 |
- Truman Robert
- Mejer Timoti Gregori Gamil'Ton
- Stokvell Mehtt'Ju
|
RU2224080C2 |
| DEVICE AND METHOD FOR REMOVAL OF DEBRIS FROM BOREHOLE FLUID IN WELL BOREHOLE |
2011 |
- Noblok Benton T. Dzh.
- Roj Todd Dzh.
- Tilli Dehvid Dzh.
|
RU2534175C2 |
| DRILLING METHOD, DRILLING MACHINE, DRILLING HEAD AND EQUIPMENT OF BOTTOM OF DRILLING COLUMN FOR DRILLING BY MEANS OF ELECTRIC DISCHARGE PULSES |
2004 |
|
RU2393319C2 |
| MULTISTAGE JET HYDROACOUSTIC GENERATOR STRUCTURE |
2006 |
- Movin Anatolij Jakovlevich
- Rizaev Mikaehl' Ali-Gejdar Kefarovich
|
RU2322566C2 |
