AN-125 with an electric motor on a sledge

Pumping unit AN-125 is designed for injection of flushing fluid during drilling of oil and gas wells; for injection of water into the reservoir during intensification of oil production; for pumping of various non-aggressive liquids, including watered oil.

Clay solution or water can be used as a flushing or pumping liquid. The content of mechanical impurities (sand, solid particles of drilled rock) should be no more than 1% by volume with hardness up to 1200 HV units.
Type of climatic execution - U1, placement category 2 according to GOST 15150-69.
Power supply system - three-phase alternating current network with nominal voltage 380 V, frequency 50 Hz. Electricity quality standards according to GOST 31309-98.

Composition:

• sledge;
• piston pump NB-125
• electric motor;
• V-belt transmission;
• V-belt transmission guard.

The pump transmission shaft is driven by an explosion-proof electric motor via a V-belt transmission. The piston pump is bolted to the unit sledge. The electric motor is mounted on a plate, which is secured to the unit sledge with bolts. The sledge of the unit has slots for the mounting bolts of the motor plate for adjusting the tension of the V-belt transmission belts.

Technical specifications of AN 125 Pump

Labelling	Nominal power, kW	Crankshaft speed range,s-1(rpm)	Limit discharge pressures, MPa	Ideal flow range, l/s (l/min)	Suction pressure, MPa	Diameter of cylinder sleeves and pistons, mm
NB-125-16	125	1,26…1,67 (76…100)	16+1	7,05…9,27 (423…556,2)	0,02-0,6	90
NB-125-13			13+0,8	8,68…11,75 (520,8…705)		100
NB-125-10			10+0,6	11,28…15,97 (676,8…958,2)		115
NB-125-8			8+0,5	14,10…19,78 (846…1186,8)		127