Patent ID: 11913312
Assignee: WUXI HENGXIN BEISHI TECHNOLOGY CO., LTD
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC E  F | IPC E  F

Claim 0:
1. An intelligent oil extraction system using an all-metal screw pump, comprising: the all-metal screw pump, an oil collecting unit, and a steam generating unit; wherein the all-metal screw pump comprises:
a stator,
a rotor,
a sucker rod,
a sleeve,
a reducer, and
a drive motor;
the stator comprising an internal threaded curved surface;
the rotor installed in the stator and comprising an external threaded curved surface configured to match the internal threaded curved surface of the stator;
the sleeve connected to the stator, and the sucker rod installed in the sleeve and connected to the rotor;
the drive motor directly coupled to the reducer and the reducer directly coupled to the sucker rod, wherein the reducer is coupled between the drive motor and the sucker rod;
the oil collecting unit configured to store crude oil, and the steam generating unit configured to provide steam;
an oil outlet of the all-metal screw pump is-connected to an input end of an oil pipeline, and an output end of the oil pipeline connected to an oil inlet of the oil collecting unit and a steam outlet of the steam generating unit;
a first valve installed at the oil inlet of the oil collecting unit, and
a second valve installed at the steam outlet of the steam generating unit;
the internal threaded curved surface and the external threaded curved surface are both tapered spiral structures with equal tapers;
the oil extraction system further comprises a lifting mechanism, and
the lifting mechanism comprises:
a cross beam,
a first clamping member,
a second clamping member,
a plane bearing,
two lifting assemblies, and
a servo motor;
the sucker rod penetrates the plane bearing and the cross beam;
the first clamping member is detachably fixed to a sucker rod part which is below the cross beam;
the first clamping member and the reducer are in a sliding fit along an up-down direction, and configured to transmit torque to the reducer and the sucker rod;
the second clamping member is detachably fixed to a sucker rod part which is above the cross beam;
the second clamping member abuts against the plane bearing, and
the plane bearing is installed on the cross beam;
the two lifting assemblies are separately provided at both ends of the cross beam, and output ends of the two lifting assemblies are fixed to the cross beam;
the servo motor configured to drive the lifting assemblies to perform lifting motion;
the oil extraction system further comprises
a monitoring and control mechanism, and
the monitoring and control mechanism comprises:
a controller,
a torque sensor,
a flow sensor,
a pressure sensor,
a liquid level detector, and
a backup power source;
the controller is electrically connected to the torque sensor, the flow sensor, the pressure sensor, the liquid level detector, the backup power source, the drive motor, the servo motor, the first valve and the second valve;
the torque sensor configured to monitor pumping torque of the sucker rod;
the flow sensor configured to monitor a crude oil flow rate in the all-metal screw pump;
the pressure sensor configured to monitor a gas pressure in the screw pump;
the liquid level detector configured to monitor a liquid level in a well; and
the backup power source configured to supply power to the controller and the servo motor during power failure;
wherein the monitoring and control mechanism further comprises an oil-water analyzer; the oil-water analyzer is electrically connected to the controller, and analyzes an oil-water ratio of the well.