Flywheel energy storage oil pumping machine

Abstract

Disclosed is a flywheel energy storage oil pumping machine, comprising an electric motor ( 1 ) and a control device ( 3 ), and also comprising a rotary spindle ( 2 ), a lifting roller ( 4 ) for lifting an oil sucker rod, a roller drive wheel ( 6 ), an energy adjustment flywheel ( 7 ), a transmission ( 8 ) and an energy feedback device ( 9 ), wherein the lifting roller ( 4 )is sheathed on the rotary spindle ( 2 ), and the separation and reunion between the rotary spindle ( 2 ) and the lifting roller ( 4 ) are achieved via a clutch ( 5 ); the roller drive wheel ( 6 ) is fixedly connected to the lifting roller ( 4 ); and a low-speed end of the transmission ( 8 ) is connected to the rotary spindle ( 2 ), and a high-speed end is connected to the energy adjustment flywheel ( 7 ). The flywheel energy storage oil pumping machine is simple in structure, low in cost, small in size, light in weight, small installation capacity of an electric motor, low in energy consumption, high in efficiency and low in failure rate, and has nearly no pollution in a power grid.

1 . A flywheel energy storage oil pumping machine, comprising an electric motor ( 1 ) and a control device ( 3 ), characterized in that the flywheel energy storage oil pumping machine further comprises a rotary spindle ( 2 );
 a lifting roller ( 4 ), used for raising and lowering a sucker rod, sleeved on the rotary spindle ( 2 ), the separation or join of the rotary spindle ( 2 ) from/with the lifting roller ( 4 ) being realized via clutches ( 5 );   a roller drive wheel ( 6 ), fixedly connected with the lifting roller ( 4 ) to form a whole;   an energy adjustment flywheel ( 7 );   a transmission ( 8 ), a low-speed end of which is connected to the rotary spindle ( 2 ) while a high-speed end of which is connected to the energy adjustment flywheel ( 7 );   an energy feedback device ( 9 ), used for transferring, to the energy adjustment flywheel ( 7 ) via the transmission ( 8 ), energy generated during lowering the sucker rod, to realize the accelerated rotation of the energy adjustment flywheel ( 7 ) for energy storage, the energy of the energy adjustment flywheel ( 7 ) being able to be transferred to the lifting roller ( 4 ) for raising the sucker rod when the lifting roller ( 4 ) raises the sucker rod.   
     
     
         2 . The flywheel energy storage oil pumping machine according to  claim 1 , characterized in that the energy feedback device ( 9 ) comprises a drive shaft ( 901 ) and a first drive wheel ( 903 ) and a second drive wheel ( 904 ) disposed on the drive shaft ( 901 ), the first drive wheel ( 903 ) or the second drive wheel ( 904 ) being connected to the drive shaft ( 901 ) via an energy feedback clutch ( 905 ), the first drive wheel ( 903 ) and the roller drive wheel ( 6 ) being a pair of meshed gears, and the second drive wheel ( 904 ) being connected to the transmission ( 8 ). 
     
     
         3 . The flywheel energy storage oil pumping machine according to  claim 1 , characterized in that the energy feedback device ( 9 ) comprises a rotating shaft ( 907 ), a first drive wheel ( 903 ) and a second drive wheel ( 904 ), the rotating shaft ( 907 ) being connected to the second drive wheel ( 904 ) via an energy feedback clutch ( 905 ), the first drive wheel ( 903 ), the second drive wheel ( 904 ) and the roller drive wheels ( 6 ) being gears, the first drive wheel ( 903 ) being positioned between the roller drive wheel ( 6 ) and the second drive wheel ( 904 ) and being meshed with both the roller drive wheel ( 6 ) and the second drive wheel ( 904 ), and the second drive wheel ( 904 ) being connected to the transmission ( 8 ). 
     
     
         4 . The flywheel energy storage oil pumping machine according to  claim 1 , characterized in that the energy feedback device ( 9 ) comprises a drive shaft ( 901 ) and a first drive wheel ( 903 ), the drive shaft ( 901 ) being connected to the first drive wheel ( 903 ) via an energy feedback clutch ( 905 ), and the first drive wheel ( 903 ) being connected to the roller drive wheel ( 6 ) via a driving belt ( 906 ). 
     
     
         5 . The flywheel energy storage oil pumping machine according to  claim 1 , characterized in that the energy feedback device ( 9 ) comprises a drive shaft ( 901 ), a transition wheel ( 902 ) fixedly connected to the rotary spindle ( 2 ), and a first drive wheel ( 903 ) and a second drive wheel ( 904 ) disposed on the drive shaft ( 901 ), the first drive wheel ( 903 ) or the second drive wheel ( 904 ) being connected to the drive shaft ( 901 ) via an energy feedback clutch ( 905 ), the first drive wheel ( 903 ) and the roller drive wheel ( 6 ) being a pair of meshed gears, and the second drive wheel ( 904 ) being connected to the transition wheel ( 902 ) via a driving belt ( 906 ). 
     
     
         6 . The flywheel energy storage oil pumping machine according to  claim 1 , characterized in that the energy feedback device ( 9 ) comprises a drive shaft ( 901 ), a transition wheel ( 902 ) fixedly connected to the rotary spindle ( 2 ), and a first drive wheel ( 903 ) and a second drive wheel ( 904 ) disposed on the drive shaft ( 901 ), the first drive wheel ( 903 ) or the second drive wheel ( 904 ) being connected to the drive shaft ( 901 ) via an energy feedback clutch ( 905 ), the second drive wheel ( 904 ) and the transition wheel ( 902 ) being a pair of meshed gears, and the first drive wheel ( 903 ) being connected to the roller drive wheel ( 6 ) via a driving belt ( 906 ). 
     
     
         7 . The flywheel energy storage oil pumping machine according to  claim 1 , characterized in that the energy feedback device ( 9 ) comprises a drive shaft ( 901 ), a transition wheel ( 902 ) fixedly connected to the rotary spindle ( 2 ), and a first drive wheel ( 903 ) and a second drive wheel ( 904 ) disposed on the drive shaft ( 901 ), the first drive wheel ( 903 ) or the second drive wheel ( 904 ) being connected to the drive shaft ( 901 ) via an energy feedback clutch ( 905 ), the first drive wheel ( 903 ), the second drive wheel ( 904 ) and the roller drive wheel ( 6 ) being gears, the first drive wheel ( 903 ) being meshed with the roller drive wheel ( 6 ), the transition wheel ( 902 ) being provided with internal teeth ( 902   a ), and the second drive wheel ( 904 ) being meshed with the internal teeth ( 902   a ). 
     
     
         8 . The flywheel energy storage oil pumping machine according to  claim 7 , characterized in that an electric motor gear ( 10 ), meshed with the internal teeth ( 902   a ), is mounted on the output shaft of the electric motor ( 1 ); or, the output shaft of the electric motor ( 1 ) is connected to the transmission ( 8 ) via an electric motor clutch ( 11 ). 
     
     
         9 . The flywheel energy storage oil pumping machine according to  claim 2 , characterized in that the energy feedback clutch ( 905 ) is an overrun clutch. 
     
     
         10 . The flywheel energy storage oil pumping machine according to  claim 2 , characterized in that the energy generated during lowering the sucker rod is transferred to the energy adjustment flywheel ( 7 ) via the transmission ( 8 ) to realize the accelerated rotation of the energy adjustment flywheel ( 7 ); or, the energy generated during lowering the sucker rod passes through the rotary spindle ( 2 ) first and is then transferred to the energy adjustment flywheel ( 7 ) via the transmission ( 8 ) to realize the accelerated rotation of the energy adjustment flywheel ( 7 ).