結構參數對旋流除砂器壁面磨損和分離性能的影響研究
[Abstract]:As a commonly used separation equipment in oil and gas field production, the safety and practicability of cyclone sand remover are the key problems restricting its application and development. In this paper, FLUENT numerical simulation and theoretical analysis are used to analyze the internal flow field and wall wear of swirling sand remover with different structural parameters. The main contents and conclusions are as follows: (1) based on the principle of gas-solid separation, the geometric model of swirl sand remover is established. The QUICK discrete scheme of the (RSM), convection term and the pressure gradient term are used in the Reynolds stress model. The numerical simulation of gas-phase flow field in swirl sand remover is carried out by using SIMPLEC algorithm, and the velocity, pressure and turbulent distribution of gas-phase flow field are analyzed and studied. (2) the gas-solid two-phase flow in swirling sand remover is numerically simulated. The observation of particle trajectory shows that the size of particle size has an effect on the motion trajectory and separation efficiency. The results of gas-solid two-phase simulation show that the serious area of wear on the wall of the sand remover is mainly in the entrance ring space, the spiral wear groove and the cone end area in the space cylinder area are separated. (3) the wear model is established. The effect of structural parameters on wall wear of cyclone sand remover was studied. The results show that the wall wear of annular space decreases with the increase of the insertion depth of exhaust pipe, and increases with the decrease of cone and cylinder space, and decreases gradually with the decrease of taper. As the entrance area increases, The wall wear rate of annular space decreases gradually. (4) the influence of different structure parameters of sand remover on the pressure loss and separation efficiency of swirling sand remover is discussed: the pressure drop of cyclone sand remover increases with the depth of pipe insertion. It decreases with the increase of the height of the cylinder and decreases with the increase of the taper. The separation efficiency of the cyclone sand remover increases with the increase of the insertion depth of the exhaust pipe, decreases with the increase of the cone taper, and increases first and then decreases with the increase of the height of the cylinder.
【學位授予單位】:西安石油大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TE935
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