本课题作为中国石油天然气集团公司“X80级管线钢管热煨弯管技术研究”的一部分。

This research topic is an integral part of the "research on the Heat-stewed BendTechnology of X80 Pipe Steel" by CNPC.

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通过三类弯管形式压损试验，发现了短半径弯头在一个较大料气输送比范围内均产生最小压损；

By means of the pressure loss in three kinds of bend configuration. it is found out that the short radius elbows appear to yield the lowest pressure loss in a wide range of mass over air ratio.

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用PRO - E软件对进气弯管，带分流叶片的叶轮及有叶片扩压器进行了实体建模。

Using software PRO-E to build the model of the impeller, diffuser with blade, entering air elbow, volute.

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