The Submersible Centrifugal Pump

潜油离心泵的长度由泵的扬程所决定。一个叶轮和一个导壳为一级装配在泵轴上，通过轴键使叶导轮定位并传递扭矩，多级组合完成后，泵筒两端用压紧套压紧。叶轮轴向力由耐磨材料制成的止推垫所承受。为减小轴向力，叶轮及导壳结构设计为全浮式或固定式，剩余的轴向负荷及泵轴自重由保护器止推轴承承担，泵轴选用高强 度的Monel-K500材料。

渤海石油装备自行研制的潜油离心泵有以下特点：

一、 以采用全浮式结构为主，可有效的克服轴向力对离心泵的影响，延长潜油电泵的寿命。

二、 叶导轮材料采用镣铸铁，具有较强的耐磨及抗腐蚀能力。

三、 叶导轮特殊的工艺设计，使得离心泵不但适合于各种类型的采油井(包括稠油井)，并具有效率高和较好的防砂效果。

四、 根据用户的需要安装离心泵内置式强磁除垢器，可有效的防止泵内结垢。

The number of pump stages is determined by the required lift. Each stage consists of a floating impeller connected to the Monel-k500 drive shaft and a stationary diffuser directing the flow of the fluid. The impeller axial force is made of wear-resistant material. In order to reduce axial force, the structure of impeller and diffuser is designed by floating type. The rest axial load and pump shaft deadweight are hold by protector thrust bearing.

The characteristics of centrifugal pump is as follows:

• Principal whole floating type, it can eliminate effect that axial force acts at centrifugal pump, extend the life of electric submersible pump.

• Leaf material using nickel-iron pulley, with a strong wear resistance and corrosion resistance.

• The special technology design of impeller and diffuser makes the centrifugal pump fit all kinds of producing well (include viscous crude) and it has high efficiency as well as good result of sand prevention.

• The built-in strong magnetic scale remover in centrifugal pump according to user demand, it can effectively prevent scale from depositing in pump.