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本文是国内首次开展涡轮钻具叶型试验研究的概况。它介绍了低速降压涡轮叶型的选型设计计算;室内试验用涡轮的制作;试验台的设计制造和低速降压涡轮的特性试验。文中叙了通述过对所设计的几种低速降压涡轮室内试验,使研制成的低速降压涡轮特性指标已达到、部份已超过国外同类涡轮的水平。
This article is the first time in China to carry out turbine-type test of turbine profiles. It introduces the design and calculation of low-speed step-down turbine blade type selection; the production of indoor test turbine; the design and manufacture of test bench and the characteristics of low-speed buck turbine. The article describes the design of several low-speed step-down turbine in-house tests designed to make low-speed step-down turbine performance indicators have been achieved, some of which have exceeded the level of similar foreign turbines.