Design Of Surface Drive Unit Performance Detection System Of Screw Pump

The screw pump is a kind of lifting equipment, which is usually used in oil field. And the surface drive unit is the power plant of screw pump. Its product quality, operating stability and safety has a direct impact to the screw pump oil production system. The paper focus on product quality inspection of the screw pump surface drive unit, completed the design on detecting system of screw pump surface drive unit.According to the function requirements and technical indicators of the drive unit performance detection system, puts forward the overall design scheme of the system. The detection system are mainly made up by the torque loading system, axial force loading system, seal pressure test system, reaction torque loading system, low speed start loading system, measurement and control system and auxiliary device.The paper completed the structure design of the power transmission chain, hydraulic transmission principle in the loading system and the principle and the structure design of dynamic seal pressure test system, also conduct the related design and calculation of the main components. In structure Realize sharing the same variable speed transmission chain between the torque load dynamometer and reaction torque load drive motor, and through the electromagnetic clutch realize transmission line switch, using the intermediate transmission link effectively, make whole structure simple and reliable. According to the functional requirement of the measurement and control system, conducting the control circuit design of the dynamometer, reaction torque drive motor and hydraulic system power drive. In terms of performance detection parameters, complete the corresponding circuit system design of driving motor operation control, voltage, current, power, efficiency within the surface drve system, also realize parameters measurement such as the torque speed, axial force, seal test pressure, drive motor and the surface temperature of the shell and so on..