液动锤射流元件喷嘴临界流速预测与验证

J4 ›› 2010, Vol. 40 ›› Issue (1): 159-163.

液动锤射流元件喷嘴临界流速预测与验证

李国琳¹,彭枧明²,柳鹤²,赵志强²

1.长春大学　计算机科学技术学院|长春 130022;2.吉林大学　建设工程学院/复杂条件钻进技术开放研究实验室(国土资源部)/地球探测技术与仪器重点实验室（国土资源部）|长春 130026

收稿日期:2009-04-24 出版日期:2010-01-26 发布日期:2010-01-26
通讯作者: 彭枧明（1975-）,男,江西贵溪人,副教授,主要从事多工艺冲击回转钻进技术研究,Tel：0431-88502337 E-mail:pengjm@jlu.edu.cn
作者简介:李国琳(1976-),女,吉林长春人,讲师,主要从事数值模拟分析技术在地质工程中的应用研究,Tel：0431-85250335,E-mail:LGL_CCDX925@SOHU.COM
基金资助:
国家“863”计划专题项目(2006AA06A109-3-2-1)

Prediction and Verification of Critical Flow Velocity for Jet Nozzle of |Hammer Hydro

LI Guo-lin¹,PENG Jian-ming²,LIU He²,ZHAO Zhi-qiang²

1.College of Computer Science and Technology, Changchun University|Changchun 130022|China;2.College of Construction Engineering/Laboratory of Technology for Drilling Under Complex Condition of Ministry of Land and Resources/Key Laboratory of Geodetection Technology &|Instrumentation of Ministry of Land and Resources|Jilin University|Changchun 130026|China

Received:2009-04-24 Online:2010-01-26 Published:2010-01-26

摘要/Abstract

摘要：

应用CFD动态分析技术，对SC71B型液动锤内部流场进行了仿真分析，结果表明，其射流元件临界流速为20.305～22.565 m/s，大大低于凭经验预测的40 m/s。为检验这一理论预测结果，对SC71B型液动锤射流元件临界流速进行了实验测定，为21.83 m/s，表明理论预测结果与实测结果高度吻合，证明了基于CFD动态分析的液动锤射流元件临界流速理论预测方法的可行性;同时通过理论分析和实测获得了至今为止液动锤射流元件临界流速的最低值，可为研制油气钻井用低速射流元件驱动控制的液动锤提供重要参考。

关键词: 射流式液动锤, 射流元件, 临界流速, CFD动态分析

Abstract:

The technique of CFD dynamic analysis was used in the simulation of the critical flow velocity at the nozzle of the fluidic in SC71B liquid-jet hammer prototype, the result shows that the critical flow velocity ranges from 20.305 m/s to 22.565 m/s, which is obviously lower than the value of 40 m/s by empirical prediction value. In order to verify the theoretical value by CFD dynamic analysis, a laboratory test was carried out on the machine of SC71B liquid-jet hammer, the laboratory value is 21.83 m/s, which highly coincides with the theoretical value. CFD dynamic analysis is proved as a validated prediction method, meay while the lowest critical flow velocity is obtained, this value can provide very important reference to develop liquid-jet hammers controlled by fluidic elements with low critical flow velocities for oil and gas drilling.

Key words: liquid-jet hammer, fluidic element, critical flow velocity, CFD dynamic analysis

中图分类号:

TE242.7

李国琳, 彭枧明, 柳鹤, 赵志强. 液动锤射流元件喷嘴临界流速预测与验证[J]. J4, 2010, 40(1): 159-163.

LI Guo-lin, BANG Jian-ming, LIU He, ZHAO Zhi-qiang. Prediction and Verification of Critical Flow Velocity for Jet Nozzle of |Hammer Hydro[J]. J4, 2010, 40(1): 159-163.

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