Development Of Submergible Rodless Pump Driven By Linear Motor

At present , it is an important problem that eccentrically wear occurs between sucker rod and tubing in most oil well, otherwise submergible rodless pump driven by linear motor can solve the problem effectively. The rodless oil pump system consists of submergible linear motor and oil well pump with reciprocating liner. Oil well pump is driven by linear motor directly and mechanical transmission assemble of gears and straps is abolished, so the system reduces the power loss .The motor controlled by transducer is synchronization linear motor with higher power factor and lower excitation current and has arbitrary movement mode . The finite element analysis of submergible linear motor is doing to calculate the magnetic field .Oil well pump sucks oil in ascending journey of liner and lifts oil in descending journey of linear motor , so the pump adapts to the working condition when the linear motor is assembled below the pump.