轴向间隙对Φ89 mm涡轮钻具性能的影响分析  

Analysis on the Influence of Axial Clearance on the Performance of Φ89mm Turbodrill

作　　者：赵志涛 翁炜 黄玉文 杨鹏 徐军军 

机构地区：[1]北京探矿工程研究所,北京100083

出　　处：《探矿工程（岩土钻掘工程）》2017年第8期89-92,共4页Exploration Engineering:Rock & Soil Drilling and Tunneling

基　　金：国家国际科技合作专项项目"地质深孔小口径孔底动力安全钻探技术研究"(编号:2011DFR71170);中国地质调查项目"全国地下水污染综合调查评价"(编号:12120113017500)

摘　　要：涡轮钻具中涡轮定子、转子设置合理的轴向间隙,可以保证转动系自由转动,避免定转子相互碰撞而损坏。轴向间隙对钻具寿命非常重要,但是受零件加工误差和受压变形等因素干扰,定转子轴向间隙难以确定一个最优定值,只能处于一个范围内。为了分析验证轴向间隙对Φ89 mm涡轮钻具的性能影响,采用理论分析和数值模拟计算相结合的论证方法,对效率和性能参数计算进行了理论分析,并采用计算流体力学软件对不同轴向间隙的单级Φ89 mm涡轮性能进行数值模拟。分析结果表明,在合理范围内,轴向间隙变化对Φ89 mm涡轮钻具性能影响细微,可以忽略。Reasonable axial clearance setting of turbodrill stator and rotor can ensure fi＇ee rotation of rotation system to avoid the damage caused by the stator and rotor collision. The axial clearance is very important for tool＇ s service life, but it is difficult to determine a optimal value, which only can be in a range because of the interference of parts machining errors, expression deformation and some other factors. In order to analyze the influence of axial clearance on the performance of φ89mm turbodrill, the theoretical analysis is carried out on efficiency and performance parameters calculation process in this paper combining with numerical simulation. Numerical simulation is made on single-stage φ89mm turbine with different axial clearance by using computational fluid dynamics （CFD） software. The results show that the axial clearance has only slight influence on φ89mm turbodrill in a reasonable range and can be negligible.

关 键 词：涡轮钻具 轴向间隙 效率 性能 

分 类 号：P634.42[天文地球—地质矿产勘探] TE921.2[天文地球—地质学]