Study On Structure And Characteristic Of Two-way Shock Absorber

Two-way Shock Absorber is a sort of shock absorber tool under the well in abroad now. It can absorb or reduce both transversal and longitudinal vibration of the drilling string in drilling operations.In the thesis, consulted to the two-way Shock Absorber in use , optimized normal mode, constructed a new type of Two-way Shock Absorber, computer model is founded by Fluent, The article firstly simulates the internal flow field of Two-way Shock Absorber by using k-εmodel , basing on control volume method and applying SIMPLE arithmetic. Distributing characteristic of pressure and kinetic energy, in internal flow field of Two-way Shock Absorber were gained by numerical computation. and that model can be confirmed through contrast between simulation result and experiment data. Finally, the model's parameters are improved based on CFD theory and simulation result, and optimization scheme is provided for operation. At the same time ,For checking up the result of numerical simulation,experiment study of absorbing shock character was completed about double-acting shock absorber, By comparing experiment data and result of numerical simulation, it can be found that the comparing The simulation of absorbing shock efficiency compared with the experimentation data and the relative error is within 10%. The two results prove the correctness of mathematical model and computing method.The mathematical model and computing method can accurately forecast the internal flow field of two-way Shock Absorber, which provides theory basic and experience for the study to compound hydrocyclone such as separation mechanism, flow field characteristic and structure optimization design.