Double-horsehead Pumping Unit

• Categories:
• Pumping Unit

• Brand:
• SJ

• API 11E:
• a long stroke

• Update Time:
• 09/23/2012

Detailed Info

Double-horsehead pumping unit is an energy saving product that has a long stroke and low SPM. It is used for pumping oil of middle and high viscosity and high water content.

In addition to the common advantages of conventional beam pumping unit, the unit has advantages of long in stroke length, small in dynamic loads and variation of the torque, high in efficiency, low in energy consumption, smooth in operation and easy in start, etc. A multi-purpose electric cabinet is incorporated in the unit, which has the functions of short circuit protection, overload or underload protection, offset without work, automatic start after power resuming, over speed control of the motor, etc. It is made of the materials cut by numerically controlled flame cutting machines to ensure accuracy and surface quality.

Double horsehead pumping unit is an energy-saving product of long stroke and low frequency of stroke, applicable to the production of medium to low viscosity oil and high water-cut oil.

As compared with the same model of conventional pumping unit, it increases the stroke length by about 70%, reduces energy consumption by 20-30% and decreases unit installed capacity by about 50%.

The unit is new in structure and evident in energy saving. It was taken as a stressed spreading project by CNPC in 1994 and a nationally stressed spreading project in 1995.

Technical specifications

Model	160-133-120	228-180-120	320-213-192 426-213-192		426-256-192 456-256-192		456-305-192 640-305-192		640-365-240 790-360-240
Max.rated load(100lb)	133	20	213		256		305		365
Stroke Length(in)	83,102,120	83,102,120	120,168,192		120,168,192		120,168,192		144,189,240
Stroke per minute(SPM)	5，7，9	5，7，9	4，5，6		4，5，6		4，5，6		3，4，5，6
Motor power(HP)	15	20	25	30	30	41	41	50	50	61
Reducer torque(Klbf.in)	160	228	320	426	426	456	456	640	640	790
Min height of carrier bar(in)	54	54	63		63		63		53
Total weight (lbs)	30，800	39，600	52,800	59,400	57,200	63,800	74,800	81,400	90,200	101,200
External dimensions(in)	252×79×283	276×79×283	339×85×413		339×91×413		379×110×413		394×110×445