针对油田稠油管线外输的工况需要,开发了KDYW120—75×6中开多级保温式稠油输送泵。该型泵叶轮采用偶数设计方案,全部叶轮轴向成对称分布,背对背安装;压出室设计为两个互成180°倒置的布局形式;采用中开式结构,无平衡盘、导叶等元件;泵体设置有保温夹套,可通入热介质,使泵整体达到保温的效果。经过油田3年多的连续运行,证明新型稠油输送泵可以满足输送稠油(粘度μ≤1000mPa·s)的需要。 In view of the needs of the heavy oil pipeline in the oil field, the KDYW120-75 × 6 medium-open multi-stage insulation heavy oil pump was developed. The pump impeller with even design, all the impeller axial symmetrical distribution, back to back installation; pressure chamber design for the two 180 ° inverted form of each layout; using open structure, no balance plate, guide vane and other components The pump body is provided with a thermal insulation jacket, which can lead into the heat medium so that the whole pump can achieve the effect of heat preservation. After more than three years of continuous operation in the oilfield, it proved that the new heavy oil pump can meet the needs of conveying heavy oil (viscosity≤1000mPa · s).