RA—2/130型旋转喷射泵的研制

Development of RA-2/130 rotating jet pumps

RA—2/130型旋转喷射泵是基于全新理论研制的一种新型泵,其结构特点是:只有1个旋转体转子和1个固定的接收管,接收管安装在旋转体的内中央,介质经旋转体转子吸入,接收管排出,用于输送含少量固体颗粒(如碳黑等)的介质时,可长期可靠地工作,寿命长,无须维修。与离心泵相比较,1个旋转体可相当于常速离心泵的数个叶轮;与高速离心泵相比较,不需要增速齿轮、高速轴承和高速密封,适用于石油、化工等行业的小流量、高扬程介质的管道输送。6台流量Q=2m3/h,扬程H=170m,转速n=2950r/min的RA—2/130型旋喷泵,自2003年3月投入使用,截至2005年7月,已累计运行20000h,运行平稳、可靠,各项性能指标均达到设计要求。

RA-2/130 rotating jet pump is a new developed pump based on a completely new theory. Its structural characteristics include that only one rotor and a fixed receiving tube are used; the receiving tube is installed in the middle of rotating body, and medium is taken in through the rotor and drained off from the receiving tube. When used to transfer the medium containing less solid particles (such as carbon blacks), it can work for long period without maintenance. Compared with centrifugal pumps, one rotor is equal to many blades of a normal speed centrifugal pump. And compared with a high speed centrifugal pump, this pump can be used for pipeline transmission of medium with low flow, high discharge head in petroleum and chemistry industries, without speed increasing gears, high speed bearings and high speed seals. In 2003, 6 RA-2/130 jet pumps with specification of Q=2 m3/h, H=170 m, n=2950 r/min were used in production. By the end of July 2005, they have worked for 20000 h consistently with steady performance; all technical indexes are satisfied with the design requirement.