WC-Co硬质合金冲蚀模型研究及应用  

Research and Application of WC–Co Cemented Carbide Erosion Model

作　　者：艾国生[1] 张波[1] 冯春宇[2] 张新庆[1] 蒋继苇 AI Guosheng;ZHANG Bo;FENG Chunyu;ZHANG Xinqing;JIANG Jiwei(Tarim Oilfield Company,PetroChina,Korla,Xinjiang 841000,China;School of Mechanical and Electrical Engineering,Southwest Petroleum University,Chengdu,Sihcuan 610500,China;Chongqing Chuanyi Control Valve Co.Ltd.,Beibei,Chongqing 404100,China)

机构地区：[1]中国石油塔里木油田公司,新疆库尔勒841000 [2]西南石油大学机电工程学院,四川成都610500 [3]重庆川仪调节阀有限公司,重庆北碚404100

出　　处：《西南石油大学学报（自然科学版）》2024年第3期179-188,共10页Journal of Southwest Petroleum University(Science & Technology Edition)

摘　　要：WC-Co硬质合金是制造固定式节流阀阀芯的主要材料,高压天然气携带着井底杂质颗粒在节流阀节流降压的过程中,对节流阀的核心部件阀芯产生冲蚀破坏。因此,以牌号为YG15的WC-Co硬质合金为研究对象,构建室内冲蚀实验平台,以确定YG15硬质合金的冲蚀模型并结合仿真验证。将冲蚀模型进一步应用至固定式节流阀冲蚀仿真中,预测固定式节流阀阀芯的使用寿命。研究结果表明,确定了YG15硬质合金的冲击角函数和在90°冲击角下的速度指数为2.48;当冲蚀角度由30°增加至90°时,YG15硬质合金靶材的冲蚀磨损量由847.1 mg增加至1235.6 mg;固定式节流阀冲蚀最严重的部位位于节流孔处,冲蚀磨损率随颗粒质量流率的增大而增大;对固定式节流阀进行寿命预测,在颗粒质量流较小的情况下,对节流阀固定油嘴保持一年一换;在颗粒质量流较大时,保持半年内更换一次。WC-Co cemented carbide is the main material for manufacturing fixed throttle valve spool.The high-pressure natural gas carries the impurity particles at the bottom of the well during the throttling and depressurization process,which causes erosion damage to the core part of the throttle valve spool.To this end,a WC-Co cemented carbide grade YG15 was used of the target material in the study,and an indoor erosion test platform was constructed to determine the erosion model of YG15 cemented carbide and to verify it with simulation.The erosion model was further applied to the fixed throttle valve erosion simulation to predict the service life of the fixed throttle valve spool.The results show that the impact angle function of YG15 cemented carbide and the velocity index at 90impact angle is 2.48;the erosion wear of YG15 cemented carbide increases from 847.1 mg to 1235.6 mg when the erosion angle increases from 30to 90.The most serious throttle erosion is located at the throttle hole,and the erosion wear rate increases with the increase of particle mass flow rate;the life prediction of fixed throttle valve is that the throttle valve fixed nozzle should be replaced once half a year when the particle mass flow rate is small,and once a year when the particle mass flow rate is large.

关 键 词：WC-CO硬质合金 冲蚀磨损 固定式节流阀 寿命预测 固定油嘴 

分 类 号：TE921[石油与天然气工程—石油机械设备] X937[环境科学与工程—安全科学]