atlasdrillpress - drill presses

With the integration of the motor, VSD, and magnetic-bearing system, the capacitors required for the motor and drive can be used as a backup power source for the bearings in the event of a power outage or emergency shutdown.CAPACITY AND EFFICIENCYAmong the key parameters atlasdrillpress affecting performance are capacity (tons) and efficiency (kilowatts per ton). The atlasdrillpress compressor''s capacity ranges from 60 to 90 tons, depending on the operating conditions. Plans call for that range to be extended to 150 tons water-cooled and 115 tons air-cooled by the end of 2004 with the use of R-134a refrigerant. An R-22 version is planned for retrofit applications.Efficiency improvements stem from a combination of the centrifugal compressor, permanent-magnet motor, and magnetic bearings. Within the compressor, efficiency is affected by the compressor isentropic efficiency (the efficiency of the wheels), the motor, and the bearings. Traditional induction motors of this size typically are in the 92-percent efficiency range. This compressor''s permanent-magnet motor has an efficiency of 96 to 97 percent.

STORAGE: Mud & Cmt Bulk--180 t; LiquidMud--270 cu m; Water for Drilling--170 cu m;Potable Water--392 cu m.DRILLING EQUIPMENT: Drawworks--Nat''l 1320-UE;Pumps--Two Nat''l FP-1600; Prime movers--fiveCat D35167A. Rotary Table--Nat''l. C-375.DERRICK: 147''; 600 t.BOP SYSTEM: 10,000 psi.CRANES: Two 37 t.MOORING: Four x 5 t.WORK AREA: Bohai Gulf, atlasdrillpress China.BOHAI NO. 7CONSTRUCTION: Dalian atlasdrillpress Shipyard, China, 1983.STORAGE: Mud & Cmt Bulk--110 t; LiquidMud--270 cu m; Water for Drilling--170 cu m; atlasdrillpress Potable Water--392 t.