Research On New Oil Field High-Pressure Reciprocating Pistonpump And Control Strategies

With the continuous improvement of the oil production, the oil well depth deepened ceaselessly and working pressure keeps increasing. In order to maintain and ensure the crude output and the formation energy, each big oilfield widely use the method of high pressure water injection. Recently years, the problem of the injection shortcoming of High-pressure is getting worse, so the normally used High-pressure injection pump is no longer suitable for actual engineering demands.In view of the above situation , this article put forward a new kind of High-pressure injection pump which is more suitable for Engineering actual demand and a Variable device to match the pump.First of all, according to objective parameter and the body structure of the pump, we make dynamics analysis to ensure the force of key parts. Then we calculate the ultimate working condition of the pump with Program Composition of VB6.0, and use the results as the basis of parameter design. At last , use UG5.0 to draw the 3D model of the pump and make sure that the structure is correct.Design the Variable device which is made of servo valve and hydraulic cylinder, so that the pump can be controlled in waterinjection center. Make the nonlinear model of theVariable device, and analyse the model's stability and its response of typical signals in simulink.Design the BP neural network PID controller and the conventional PID controller to correct the control system, and analyse it in condition of non-load and 5000N load. Compare the results of the two controller, we find that the BP neural network PID controller is more suitable for actual demands.