| 新型射流式元件结构设计与试验研究 |
| 投稿时间：2015-12-26 修订日期：2016-04-07 点此下载全文 |
| 引用本文：纪天坤,孙强,杨冬冬,等.新型射流式元件结构设计与试验研究[J].钻探工程,2016,43(6):52-55.JI Tian-kun,SUN Qiang,YANG Dong-dong,et al. Structure Design ofNew Bi-stable Fluidic Amplifier for Liquid-jet Hammer[J]. Drilling Engineering, 2016,43(6):52-55. |
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| 基金项目:国土资源部公益性行业科研专项“干热岩快速钻井用高压高能射流式液动锤研究”(编号：201311112) |
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| 中文摘要:射流式液动锤由于其具有钻进效率高、钻进深度不受限制等优点被成功应用于油气钻井领域。然而由于射流元件在复杂受力条件下极易破损，严重制约了射流式液动锤的使用寿命。为解决此问题，对射流式液动锤射流元件受力情况进行了数值模拟分析，通过分析射流元件内部应力场分布情况，得出了射流元件破损机理，并设计了新型两体式射流元件。模拟分析研究表明，采用新型两体式射流元件可将元件内最大应力值降低一个数量级，使射流元件受力情况明显改善，可有效地提高其使用寿命。 |
| 中文关键词:射流式液动锤 射流元件 结构优化 |
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| Structure Design ofNew Bi-stable Fluidic Amplifier for Liquid-jet Hammer |
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| Abstract:Liquid-jet hammer have been successfully used in oil and gas drilling production for its high penetration rate and unlimited drilling depth. However, the damage of the bi-stable fluidic amplifier caused by complex stress has limited the working life of the liquid-jet hammer. In order to improving the performance of the liquid-jet hammer, the distribution of stresses in the bi-stable fluidic amplifier was studied by computation and the optimized structures of the bi-stable fluidic amplifier were proposed. Computational study results show that the optimized bi-stable fluidic amplifier can reduce the maximum stress one order of magnitude to improve stress situation obviously with longer service life. |
| keywords:liquid-jet hammer bi-stable fluidic amplifier structure optimization |
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