摘要
针对压裂泵泵阀冲蚀磨损严重的特点,利用CFD软件对泵阀阀隙流域进行流场仿真计算,得到不同泵阀升程、冲次、凡尔胶皮突出高度h_1和凡尔胶皮接触长度L的流场分布状态。结合压裂泵泵阀的失效机理,通过对计算结果中的流场状态分析表明:小升程下,阀隙流速最大;高冲次会提高流速和增大泵阀滞后高度;h_1的值越大,阀盘对阀座冲击越小,但阀隙最大流速增大,阀隙过流面积减小;L的值越小,阀盘对阀座冲击越大,但流速减小,且有利于减小泵阀的冲蚀磨损。
In view of the characteristic of severe erosion and abrasion in the fracturing pump valve, CFD-based erosion and failure is simulated and computed. The distributed rule of the pump valve lift, times of stroke, the height of the seal and the sealing contact length at a certain moment are shown. By analyzing the characteristic of the flow field from the simulated result and the failure mechanism of the fracturing pump valve, it is concluded that the lift is smaller, the greater is the flow velocity, the high times of stroke will increase the flow rate and the lag height of the pump valve, when the valve of hl becomes bigger, although the force of the valve disk shocking the seat is smaller, the velocity of the valve becomes even bigger and the area is reduced, when the valve of L becomes smaller, although the force of the valve disk shocking the seat is greater, the velocity of the valve becomes even smaller and the failure is reduced.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2018年第2期629-635,共7页
Journal of System Simulation
基金
国家科技重大专项基金(2011ZX05037-002)
关键词
压裂泵
泵阀
冲蚀失效
仿真计算
the fracturing pump
pump valve
erosion and failure
simulation and computation
