Units for cold cutting out are intended for mechanical cutting out openings in pipelines of DN=150…1200 mm being under pressure of operating medium of up to 6,3 MPa (oil, water,etc.) through shutoff valves established on the side pipe nipple of DN=50, 100, 150, 200, 300 in explosive zones of the class “1” according to GOST 31610, 10-2012.
Tools and devices:
- drills for solid drilling, one piece;
- combined tool, consisting of an annular drill and a central twist drill;
- diameters of drills: d=50 (UKhV-50), d=80, d=100, d=120, d=132, d=150 (UKhV-150), d=170, d=200, d=225, d=230, d=250, d=270, d=300 (UKhV-300);
- special keys of d=36(UKhV-50), d=36, d=50 (UKhV-150), d=80, d=100, d=120, d=132, d=150 (UKhV-300)
|Maximum pressure in the cut-out pipeline, MPa||6,3||6,3||6,3|
|Rotational speed of the cutting tool, rpm||33,21||49,82||49,82|
|Feeding of the cutting tool, mm /rev.||0,078||0,062||0,062|
|Maximum travel of the tool, mm||50||100||120|
|Time of cutting out of openings, min, no more than||20||40||40|
|Installed capacity, kW, no more than||1,1||2,2||3,0|
|Overall dimensions, mm||275х666х750||1260х670х360||1750х785х525|
|Weight (without electric equipment and adapters), kg, no more than||60||113||210|
|Diameter of the mill, mm||36||36*; 80; 120; 132; 150||170; 225; 230; 250; 270; 300;
80*; 120*; 132*; 150*
* with application of adapters for the cutting tool.
This development is protected by the Russian patent No. 2147975 from 11.03.1999.